JPH0643634U - Motor drive camera capable of multiple exposure shooting - Google Patents

Abstract

(57) [Summary] [Purpose] A motor capable of multiple exposure shooting that reliably performs only the shooting preparation operation during multiple exposure shooting and prevents a slight movement of the film due to motor overrun that tends to occur in sequential operation mode.・ Provide a drive camera. [Structure] During multiple-exposure shooting, the motor 600 operates the shooting preparation means 110, 130, and 79, and the motor 600 is stopped upon detection of the completion of the preparation operation of the multiple hoisting stop switch SW3. Control means 604 for prohibiting the exposure and enabling multiple exposure
And.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a motor drive camera capable of multiple exposure shooting.

[0002]

[Prior art]

 Conventionally, as a camera of this type, there is one in which a motor drive device is attached to a camera having a multiple exposure mechanism. The operation when performing double exposure with this camera will be described. First, before the first exposure, the setting member for multiple exposure is operated to cut off the transmission between the motor and the film feeding system. Immediately after the first exposure is completed, the in-camera mechanism except for the film feeding system is driven by the motor to be in a standby state in preparation for the second exposure. By returning the operation member to the original position, the second exposure is performed after the motor and the film feeding system are connected. When the second exposure is completed, the mechanism inside the camera including the film feeding system is driven by the motor, and the double-exposed film is wound up. Since the conventional camera operates as described above, it is impossible even if the user wants to stop the second exposure after the first exposure due to changes in the condition of the subject.

[0003]

[Problems to be solved by the device]

 An object of the present invention is to provide a motor drive camera capable of canceling multi-exposure shooting on the way. Therefore, the present invention starts the motor to drive the film feeding system in response to the setting member for multiple exposure being moved from the state of prohibiting the driving of the film feeding system to the state of allowing it. It was made in this way. Further, the object of the present invention is to provide a motor capable of performing multiple-exposure shooting that reliably performs only the shooting preparation operation during multiple-exposure shooting and prevents a slight movement of the film due to motor overrun that tends to occur in the sequential operation method. To provide a drive camera.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a motor drive camera capable of performing multiple-exposure shooting according to the present invention performs shooting preparation operations such as charging a shutter, raising and lowering a mirror, and setting an aperture. The arm 130, the aperture interlocking lever 79, etc., the preparation operation end detecting means for detecting the end of the preparation for photographing, that is, the multi-winding stop switch SW3, the film feeding means for feeding the film, that is, the spool 29, and the film feeding for one frame. A feeding end detecting means for detecting the end of feeding, that is, a hoisting limit switch SW5, and an operating means for sequentially operating the sector gear 110, the arm 130, the diaphragm interlocking lever 79 and the spool 29, that is, a gear train (58, 60, 106, 107, 109), gear trains (58, 59, 70, 124), gear trains (59, 70, cam 71, throttle control) The control lever 80) and the gear train (32 to 42), the motor 600 for driving the operating means, and the setting that can take the first setting state, that is, the single exposure shooting state and the second setting state, that is, the multiple exposure shooting state. Means or multiple exposure lever 171 and when the multiple exposure lever 171 is in the single exposure photographing state, that is, in the state of left-handed rotation, the motor 600 allows the operating means to sequentially activate the photographing preparation means and the film feeding means. Then, the film is fed for each exposure, and the motor 600 is stopped by detecting the feeding end of the winding limitation switch SW5, and the multiple exposure lever 171 is in the multiple exposure photographing state, that is, in the right-handed state. Then, the motor 600 operates the photographing preparation means, and the motor is stopped upon detection of the completion of the preparatory operation of the multi-winding stop switch SW3. When the multiple-exposure lever 171 is changed from the multiple-exposure shooting state to the single-exposure shooting state, the operating means operates the film feeding means by the motor 600. A control means 604 for feeding the film and stopping the motor 600 upon detection of the feeding end of the winding limitation switch SW5 is provided.

[0005]

[Action]

 With the above configuration, when the setting means (SW2) for multiple exposure shooting is changed from the second setting state for multiple exposure shooting to the first setting state for normal shooting state, the motor (600) The film feeding means (29, 33 to 43) is driven and the film is fed, so that a normal photographing state can be obtained. When the setting means is in the first setting state (single exposure shooting), the shooting preparation means and the film feeding means are sequentially operated, and the feeding end detecting means detects the end of one frame of film feeding. After that, the control means stops the motor to stop the film feeding.

[0006]

【Example】

 FIG. 1 shows an embodiment of the present invention and shows a camera drive mechanism section.

The details of each unit will be described below according to the sequence of the shooting preparation operation. First, when the key for locking the back cover is removed by a known means for loading the film 28, the back cover can be opened and the part 1 of the back cover moves to the lower left in FIG. Then, the back cover interlocking lever 3 follows the part 1 of the back cover about the shaft 4 by the biasing force of the spring 2 and rotates counterclockwise. As a result, the rewind releasing lever 5 fixed below the shaft 4 is also turned counterclockwise, and the one end 6a of the rewind holding lever 6 is pushed. Therefore, the lever 6 is rotated clockwise to release the rewinding state, and the relationship between the rewinding holding lever 6 and the rewinding button 7 which has been in the raised position until then becomes the state shown in FIG. The rewinding state and its cancellation will be described later.

When the rewind release lever 5 is turned counterclockwise, its tip 5a is released from contact with the back cover opening / closing switches SW12 and SW17, and the switch SW12 is turned off and the switch SW17 is turned on. Therefore, it is possible to rotate the motor 600 to operate the spool 29 and the sprocket 49 even when the back cover is open, but this operation will be described later.

A pin 3 a is planted at the other end of the back cover interlocking lever 3, and one arm portion 9 a of a hoisting limiting lever 9 that rotates around a shaft 8 is rotated by the left rotation of the pin 3 a, and this pin 9 a is pushed. Rotate right. A hoisting limit switch SW5 is provided behind the arm portion 9a, and is turned on when the hoisting limit lever 9 is turned clockwise. This switch SW5 is connected to a motor control circuit (FIG. 13) which will be described later, and when the switch SW5 is ON, the motor 600 is shown in the figure when the fully-pushed switch SW6 located in the upper part of FIG. 1 is turned ON. The circuit configuration is such that the circuit rotates in the direction opposite to the arrow, that is, rotates clockwise. Further, when the hoisting limit lever 9 is turned to the right, the hook 9b at the tip of the other arm moves to the left in FIG. 1, so the connection with the notch 12a of the hoisting limiter 12 is released, and the limiter 12 is released. Can be rotated.

When the back cover interlocking lever 3 is turned counterclockwise, the number-of-sheets locking claws 13 are also turned clockwise. That is, the pin 13c implanted at one end of the locking claw 13 is pushed leftward in the figure by the interlocking lever 3 that rotates leftward, and the locking claw 13 moves around the shaft 15 against the urging force of the spring 16. Is turned right. As a result, the locking portion 13a of the number-of-sheets locking claw 13 is retracted to the left in the figure from the position where it is engaged with the number-of-sheets ratchet wheel 17 fixed to the lower end of the shaft 18. Then, the ratchet wheel 17, the shaft 18 to which the ratchet wheel 17 is fixed, the idle feed cam 19 and the number plate 20 fixed to the shaft 18 are integrally rotated left by the biasing force of the spring 21. This rotation ends when the pin 22 implanted under the number plate 20 comes into contact with the stop plate 23 provided on the substrate (not shown). At this time, the letter S on the number plate 20 directly faces the indicator 24, indicating that the number counter has been reset.

Although another feed claw 25 can be engaged with the numerometer ratchet wheel 17, its front end 25a is located at the left front side in FIG. The feed claw 25 is rotated counterclockwise around the shaft 27 against the urging force of the spring 26, and the claw portion 25b is retracted from the engagement position with the number-of-sheets ratchet wheel 17. Therefore, the feed claw 25 does not prevent the ratchet wheel 17 from turning counterclockwise. The above is the operation when the case back is opened. If the back cover is opened, the film is loaded, but the motor 600 does not rotate during this time.

Next, the operation from the loading of the film to the preparation for the first frame, that is, the film feeding operation by the film feeding system will be described. When the front end of the film 28 is inserted into the groove 29a of the spool 29 and the push button 100 is pressed, the push button switch SW6 is turned on via the half-press switch SW13. At this time, the hoisting limit switch SW5 has already been turned on, and the motor control circuit, which will be described later, detects this and the motor 600 rotates (clockwise) in the direction opposite to the arrow in the figure as described above. Get started. By this rotation, the pinion 32 and the worm 58 fixed to the motor shaft 31 rotate right, and the gears 33, 59, and 60 respectively rotate (counterclockwise) in the directions opposite to the arrows. The rotation of the pinion 32 is transmitted to the first gear 33 and the second pinion 34 integrated with the first gear 33, the second gear 35 and the third pinion 36 and the third gear 37 integrated with the second gear 35, and the third gear The gear 37 is rotated (counterclockwise) in the direction opposite to the arrow in the figure. The reduction gear train from the pinion 32 to the third gear 37 is for obtaining the torque required for film feeding from the small motor 600.

A film feed plate 39 is fixed below the shaft 38 to which the third gear 37 is fixed, and like the gear 37, rotates in the direction opposite to the arrow in the figure. During this counterclockwise rotation, the projection 39a of the feed plate 39 and the hook portion 40a of the film feed claw 40 are engaged with each other. Since the rotation shaft 41 of the film feeding claw 40 is embedded in the fourth gear 42, the fourth gear 42 also starts rotating in the same direction. Therefore, the spool 29 rotates (counterclockwise) in the direction of the arrow in the figure via the known spool friction mechanism 43, and the film 28 is wound on the spool 29.

On the other hand, the rotation of the fourth gear 42 is transmitted to the fifth gear 44 and the sixth gear 45, but it does not directly rotate the sprocket shaft 47. The situation is explained in FIG. As described above, the rewinding state is released by rotating the rewinding holding lever 6 to the right, but at the end of the rewinding of the previously used film, the film is generally planted above the sprocket shaft 47. The phase of the sprocket upper pin 47a and the groove 45a provided in the upper portion of the sixth gear 45 do not match. Therefore, although there is the urging force of the sprocket shaft lowering spring (not shown), the sprocket upper pin 47a only contacts the upper surface 45b of the sixth gear 45 as shown in FIG. Therefore, the sprocket shaft 47 does not rotate with the rotation of the sixth gear 45, and the sprocket pin 48 planted in the middle of the shaft 47 also does not rotate. Therefore, the rotation of the sprocket 49, which is only vertically movable relative to the pin 48 via the groove 49a, is not controlled by the sixth gear 45. Therefore, at this time, the film 28 is moved by being wound on the spool 29, and the perforations (not shown) are engaged with the teeth 49b of the sprocket 49 to drive the sprocket 49 and the sprocket shaft 47.

However, as is well known, when the same drive source works together, the spool 29 is set so as to take up more film 28 than the sprocket 49, so that the film 28 advances. In the meantime, the sprocket pin 47a and the groove 45a are in phase with each other at a certain point in time and are engaged with each other, and the rotation of the sixth gear 45 normally determines the feed amount of the film 28. This embodiment also operates similarly.

Returning to FIG. 1, the counting up of the number of sheets will be described. A sprocket upper gear 50 is fixed above the sprocket shaft 47 and is always meshed with the sprocket gear 51. The shaft 27 is planted at an eccentric position on the gear 51, and while the sprocket shaft 47 is rotating, that is, while the gear 51 is rotating via the gear 50, the shaft 27 has one end thereof. The feed claws 25 connected to each other reciprocate substantially in the left-right direction in FIG. At this point in time, the back cover is already closed and a part 1 of the back cover interlocking lever 3 is turned to the right. In this way, the locking portion 13a of the locking claw 13 and the total number of ratchet wheels 17 are in positions at which they can be engaged.

With the counterclockwise rotation of the number-of-sheets locking claw 13, its tip 13b moves to the right in FIG. 1, so that the tip 25a of the feed claw 25 can move to the upper right in FIG. The feeding claw 25 is rotated rightward by the urging force of the claw portion 25b, and the claw portion 25b is brought into a position in which the claw portion 25b can be engaged with the sheet counting ratchet wheel 17. For this reason, although not described in detail because it is publicly known, the gear 51 is rotated by the rotation of one frame of the film 28 of the sprocket 49 to reciprocate the feed pawl 25, and the ratchet wheel 17 is made to move one tooth by the pawl portion 25b. Is turned right. As a result, as the film is fed, the number-of-sheets disc 20 is rotated from "S" to "1" facing the index 24.

During that time, the hoisting limiting plate 12 mounted on the sprocket shaft 47 rotates a plurality of times. At that time, since the hoisting limit lever 9 is biased counterclockwise by the spring 52, the hook 9b is rotated counterclockwise around the shaft 8 so that the hook 9b comes into contact with the outer circumference 12b of the limiting plate 12 and the notch 12a. When the hooks 9b face each other, they may engage with each other, and the film skipping thereafter may be interrupted. In spite of this situation, in order to allow the first frame to be fed in a jump manner, the protrusion 19a of the idle feed cam 19 that operates integrally with the number plate 20 contacts the arm portion 9c of the hoisting limit lever 9. It touches and prevents the left-handed rotation. However, since the contact is released immediately before the number "1" on the number plate 20 directly faces the index 24, the lever 9 is rotated counterclockwise after the film 28 is fed by a predetermined amount. As a result, the hook 9b falls into the notch 12a, and the film feeding is mechanically blocked. While the total number of sheets 20 is from "S" to "1", the hoisting limit is disabled. Therefore, the winding limitation switch SW5 pressed by the arm portion 9a of the lever 9 is turned off, the power supply to the motor 600 is cut off by the action of the control circuit 185 which will be described later, and the film idling is completed here.

Here, note the operation of the winding-up limit holding lever 53. The lever 53 is biased rightward about the shaft 54 by a spring 55, and a pin 53b planted on the lever 53 is in contact with a recess 12c provided on the outer periphery of the hoisting limiting plate 12. Only at that time, the tip end 53a can lock the tip end 9d of the winding limiting lever 9. The tip 53a of the lever 53 is dimensioned to lock the tip 9d of the lever 9 only when the lever 9 is rotated sufficiently large rightward.

The case where the winding-up limiting lever 9 largely turns to the right is caused by the engagement between the pin 3a on the back cover driving lever 3 and the arm portion 9a when the back cover is opened, and the intermediate position described later. The case where the pin 9e on the limiting lever 9 is pushed at its end by the left rotation of the lever 56. Since the right turning angle of the limiting lever 9 is small when the outer peripheral portion 12b of the hoisting limiting plate 12 and the hook 9b are in contact with each other, the tip end 53a does not engage the tip end 9d. Therefore, the lever 9 can be turned counterclockwise from the state where the hook 9b is in contact with the outer peripheral portion 12b without being blocked by the hoisting limit holding lever 53, and can fall into the notch 12a of the limiting plate 12. During this idling, none of the diaphragm 79, the shutter front curtain 115 and the rear curtain 115 ', and the quick return mirror held by the holding frame 132 are driven. Each of these will be described in detail later.

Next, shooting and subsequent winding operation will be described. When the push button 100 is pushed down again in FIG. 1, the half push switch SW13 is turned on. This starts energization of a part of the circuit described later. The light passing through the lens 78 is reflected by the quick return mirror held by the holding frame 132 and enters the light receiving element PD. The output of the light receiving element PD is introduced into the exposure control circuit and calculated. Next, when the push button 100 is pushed further deeper, the full-push switch SW6 is turned on, and the exposure control circuit stores the photometric result of the light receiving element PD.

Further, when the switch SW6 is turned on, another operation as described below is started. That is, at this time, since the hoisting limit switch SW5 is off, the motor 600 starts to rotate (counterclockwise) in the direction of the arrow in FIG. 1 by the action of the motor control circuit. Therefore, the pinion 32 and the worm 58 fixed to the motor shaft 31 rotate. Since the first gear 33 is always engaged with the pinion 32, and the seventh gear 59 and the tenth gear 60 are always engaged with the worm 58, these simultaneously start to rotate in the arrow directions.

First, a system that interlocks with the engagement of the pinion 32 and the first gear 33 (hereinafter abbreviated as “film feed system”) will be described. The rotation of the motor shaft 31 is converted into an appropriate number of rotations and torque by the reduction gear train, and the third gear 37 is rotated (clockwise) in the direction of the arrow in the figure. As the third gear 37 rotates clockwise, the shaft 38 to which it is fixed also rotates, and the rotation control plate 61 and the film feed plate 39 fixed to this also rotate in the direction of the arrow in FIG. 1 (right rotation). To do. On the outer periphery of the rotation restricting plate 61, a mirror raising lock claw 62 is urged by a spring 63 in the left-handed direction and is in contact with the outer surface of the rotation restricting plate 61. At this time, the locking portion 61 a of the restriction board 61 is locked to prevent the restriction board 61 from rotating. As a result, this will act as a stopper in the diaphragm drive system, mirror drive system, and shutter charge system described later. Similarly, the film feed plate 39 fixed to the shaft 38 is located at a position where the projection 39a and the hook portion 40a of the film feed claw 40 are engaged at the start of photographing, but the feed plate 39 is rotated rightward so that the film feed plate 39 is engaged. However, the rotation is not transmitted to the feed claw 40. Therefore, in this case, unlike the case of the film idling described above, the film is not fed because the fourth gear 42 and the following parts do not rotate.

During the above-described clockwise rotation, the pin 37 a fixed on the third gear 37 pushes the arm portion 65 a of the hoisting limit release lever 65, and counteracts the action of the spring 66 to move the lever 65 around the shaft 67. Turn left. However, since the pin 68 implanted in the other arm of the release lever 65 moves in a direction away from the one end 56a of the intermediate lever 56, the lever 56 is not affected. Therefore, the limiting lever 9 is not rotated by the lever 56, and winding is limited.

Next, the worm 58 will be described as a system (hereinafter, abbreviated as “throttle drive system”) that is interlocked with the meshing of the seventh gear 59. Along with the rotation of the seventh gear 59 in the direction of the arrow in FIG. 1 (right rotation) due to the left rotation of the motor 600. The shaft 69, the eighth gear 70, and the squeezing cam 71, to which this is fixed, all start to rotate in the same direction as a unit. However, since the right rotation of the rotary disc 61 in the film feeding system is restricted by the mirror-raising locking claws 62, the rotation of the motor shaft 31 is restricted via the gear train, and the shaft 69 also has a predetermined rotation. Only the rotation angle can be turned to the right. When the shaft 69 starts to rotate rightward from the state shown in FIG. 1, the tip 71a of the squeezing cam 71 pushes the one end 102a of the holding release lever 102, but the lever 102 moves the shaft 73 of the shaft 73 embedded in the squeeze holding lever 75. It cannot rotate (turn left). This is because the arm portion 102b of the lever 102 is in contact with the pin 74 planted in the diaphragm holding lever 75. Therefore, the lever 102 turns left about the shaft 77 against the biasing force of the spring 76 together with the diaphragm holding lever 75.

In the present embodiment, it is assumed that the diaphragm interlocking lever 79 that interlocks with the diaphragm mechanism of the lens 78 receives a downward biasing force in the drawing. The lever 79 is prevented from descending by the tip 80a of the aperture regulating lever 80, and the aperture is open at that time. The hook portion 75a is disengaged from the pin 81 planted in the aperture regulating lever 80 by the left turning of the aperture holding lever 75, and the aperture regulating lever 80 is moved by the urging force of the aperture movement lever 79 and the spring 82 to cause the tip 80a to move. Is allowed to move in the descending direction (clockwise around the axis 84). As a result, thereafter, the throttle control lever 80 is rotated clockwise from the state shown in FIG. 1 through the contact between the pin 83 planted at another position and the throttle cam 71, and the lift amount is gradually decreased. Following 71, it rotates clockwise around the axis 84, and the diaphragm is narrowed down.

The aperture amount of the aperture is measured by the resistor 302 and the brush 303 provided at one end 80c of the regulating lever 80, and is calculated based on the previous measurement result, the set shutter speed, the film sensitivity, and the like. When the appropriate resistance value is reached, the coil 85 is energized by the function of the exposure control circuit described later. Then, the attraction force of the amateur 88, which has been attracted to the yoke 87 by the permanent magnet 86, is temporarily reduced, so that it loses the biasing force of the spring 89 and the aperture locking claw 90 to which it is attached. Along with that, turn left about axis 91. Then, the claw portion 90a of the locking claw 90 locks the enlarged gear train 93 including the gears 93a, 93b, 93c, etc., so that the aperture regulating lever 80 integrated with the gear 93c stops and proper exposure is obtained. Aperture value is set. The enlarged gear train 93 is installed in order to increase the resolution of aperture value setting and to increase the accuracy.

Next, how the system interlocked with the meshing of the worm 58 and the tenth gear 60 (hereinafter abbreviated as “shutter charge system”) operates during this period will be described with reference to FIG.

With the counterclockwise rotation of the motor 600, the tenth gear 60 starts rotating (counterclockwise) in the direction of the arrow in the figure at the same time as the clockwise rotation of the gear 59. Then, the shaft 105 fixed to the shaft 105 and the eleventh gear 106 fixed to the shaft 105 also rotate counterclockwise. As a result, the twelfth gear 107, which is always engaged with the eleventh gear 106, is rotated clockwise, and the leading curtain charge gear 109, which is integrated via the shaft 108, is also rotated clockwise.

The gear 109 starts to mesh with the front curtain sector gear 110 in the middle of its right rotation, and while the meshing state continues for a certain section, the gear 110 rotates counterclockwise around the shaft 112 and eventually corresponds to a portion where teeth are not formed. Then, the leading charge gear 109 and the leading sector gear 110 are disengaged from each other, and only the leading charge gear 109 continues to rotate right after that. The right rotation of the gear 109 is stopped by reaching the engagement between the rotation restricting plate 61 and the mirror raising locking claw 62 in the film feeding system.

On the other hand, the front curtain sector gear 110 disconnected from the charge gear 109 returns to the position shown in FIG. 1 by the urging force of the spring 111. In this way, first, the front curtain sector gear 110 rotates counterclockwise around the shaft 112 erected on the front curtain arm 113, and at this time, the front curtain arm 113 provided coaxially with the gear 110 is installed at one end of the sector gear 110. The pin 114 is pushed by the pin 114 and turned counterclockwise, and the hook portion 113a reaches a position where it can be locked by the leading blade claw 116. The sector gear 110 is additionally provided with a pin 117, and pushes the spring 118 as the gear 110 rotates counterclockwise. The biasing force of the spring 118 causes the front curtain claw 116 to rotate rightward, and the armature 119 attached to the claw 116 is pressed against the yoke 120. Thereafter, the attraction force of the permanent magnet 121 causes the yoke 120 and the armature 119 to keep the attraction state against the biasing force of the spring 122. In such a state, the hook 116a of the claw 116 and the key portion 113a of the arm 113 are kept engaged against each other against a leading blade driving spring (not shown), and the leading blade running preparation is completed. The front curtain auxiliary arm 123 cooperates with the front curtain arm 113 to support the front curtain 115.

As for the trailing curtain, the same operation is performed from the operation of the twelfth gear 107 rotating in the direction of the arrow in FIG. 1 to the completion of the trailing curtain running preparation, and therefore the parts corresponding to the leading curtain charging mechanism are the same. The number is indicated by adding a dash, and detailed description is omitted.

The operation performed as described above is an example of a known shutter charge operation, but the shutter charge is performed mainly when the aperture is narrowed down. In other words, this shutter charge fulfills the deceleration effect for precise aperture control.

Since the eighth gear 70 and the ninth gear 124 are always meshed with each other in the process of narrowing down the above-mentioned aperture, the shaft 125 also continues to rotate counterclockwise. This axis 125 is for driving the reflex mirror.

With the counterclockwise rotation of the shaft 125, the first arm 126 fixed to the shaft 125 also rotates counterclockwise. The shaft 127 implanted at the tip of the arm 126 also rotates counterclockwise around the shaft 125, and the tip 128a of the second arm 128 rotatably attached to the shaft 127 moves to the right from the state shown in FIG. Here, the shaft 131 embedded in the mirror holding frame 132 and the third arm 130 are rotatably coupled, and the mirror holding frame 132 is rotatable around the shaft 64. Returning to the clockwise rotation of the second arm 128 again, when the tip 128a moves to the right, the claw portion 133a at the tip of the leaf spring 133 fixed to the third arm 130 moves to the second arm 128 as shown in FIG. Because of being caught, the arm 128 and the third arm 130 are in an engaged state, and thereafter, they act as one arm. This acts as a rod, and the first arm 126 serves as a crank with the shaft 125 as the center of rotation, and the shaft 127 serves as a crank pin to push up the mirror holding frame 132. At this time, since the opening is provided in the enclosure 126a, the movement of the shaft 129 is not limited. That is, it is pushed up by the half rotation of the shaft 125. The mirror holding frame 132 starts to turn left about the shaft 64, and eventually the arm 132a provided integrally with the mirror holding frame 132 and the mirror lowering position switch SW1 are released from contact, and the switch SW1 is turned off. The switch SW1 is turned off during the counterclockwise rotation of the shaft 125, and as described above, the shutter charge operation is also performed during this period.

Now, let's return to the shutter at the left middle part. Another arm 113'a is integrally provided on the rear curtain arm 113 ', and the arm 113' rotates left about the shaft 112 'by the operation of charging the shutter, and the rear curtain travel completion switch SW4 and the arm 113'. The contact with ‘a’ is released, and the switch SW 4 is turned off. The rear curtain traveling completion switch SW4 is turned off before the mirror lowering position switch SW1 is turned off. The operation of these two switches will be described later.

Returning to the mirror system again. In the crank mechanism described above, the gear ratio of the eighth gear 70 and the ninth gear 124 is adjusted so that the first arm 126 is substantially aligned with the second arm 128 and the third arm 130 when the shaft 125 is rotated by a half turn to the left. Is set. That is, this time is the time when the rotation restricting plate 61 and the mirror raising locking claw 62 in the film feeding system are engaged.

FIG. 4 shows the state when the mirror has finished rising. In this state, the arm 132a provided integrally with the mirror holding frame 132 turns on the mirror stop switch SW7 near the completion of the raising of the frame 132. This signal causes the motor 600 to stop under the action of the control circuit. The motor 600 has a slip mechanism (not shown) and is capable of slipping when the rotation is stopped by an external force. Since this is a well-known and common knowledge as an accessory mechanism when a camera is driven by a motor, it is not shown.

If the state of FIG. 4 continues for too long, there is a risk that the second arm 128 and the third arm 130, which are aligned, will buckle in the direction in which the shaft 129 moves to the right in the figure. In order to deal with this, it is desirable that the leaf spring 133 has an urging force that abuts against the back surface of the second arm 128. By doing so, a frictional force is generated between the back surface of the second arm 128 and the surface of the leaf spring 133, so that this buckling can be prevented.

As described above, the aperture was reduced from the open aperture to the desired aperture, the shutter was charged, and the reflex mirror was retracted from the optical path to prepare for the electric operation of the shutter.

When the front curtain coil 135 is energized at an appropriate timing, the attraction force of the permanent magnet 136 is temporarily weakened, and the attraction force between the armature 119 and the yoke 120 is lost due to the urging force of the spring 137, so that the leading blade claw is lost. 116 rotates counterclockwise and the hook 116a releases the engagement of the hook portion 113a of the front curtain arm 113, so that the front curtain 115 travels by the force of a front curtain drive spring (not shown). When the trailing curtain coil 135 'is energized at the time when the next set shutter speed is obtained, the trailing curtain 115' runs exactly as in the case of the leading curtain. At the beginning or the end of the trailing curtain running, the trailing curtain switch SW4, which has been OFF in the charged state until then, comes into contact with the other arm portion 113'a of the trailing curtain arm 113 'so that it is turned ON.

This signal causes the control circuit to be described later to gradually or appropriately give a time lag, so that the motor 600 starts rotating (clockwise) in the opposite direction of the arrow in the figure. Then, the mirror returns, the aperture is opened, and each part returns to the state shown in FIG.

First, regarding the return of the mirror, when the seventh gear 59 turns left, the rotation is transmitted to the eighth gear 70 and the ninth gear 124, and the shaft 125 and the first arm 126 start turning right. Along with this, the second arm 128 and the third arm 130 are pulled downward in FIG. 1, and the mirror holding frame 132 descends from the raised state shown in FIG. Then, when the first arm 126 faces downward, the enclosure portion 126a abuts the shaft 129, the two are coaxially arranged, and the holding frame 132 does not move back to the state of FIG. That is, when the mirror returns, the holding frame 132 descends due to the rotation (clockwise rotation) of the shaft 125, and thereafter, the holding frame 132 is in a state of not moving at all.

No matter how many times the shaft 125 is turned to the right in this state, the arm 126 and the arm 128 both rotate around the shafts 125 and 129 via the pin 127 and are provided behind the claw portion 133a of the leaf spring 133. Even if the second arm 128 contacts the leaf spring 133 due to the tapered portion 133b (FIG. 4), the claw portion 133a is displaced and escapes, so that the third arm 130 does not rotate and the mirror holding frame 132 does not move. Absent.

When the holding frame 132 is turned clockwise around the axis 64, the mirror stop switch SW7 is switched from on to off, and the mirror lowering position switch SW7 is switched from off to on, contrary to the counterclockwise rotation. . At the beginning of the return operation of the mirror, the pin 127 abuts on one end 306a of the reset lever 306 to rotate the lever 306 about the shaft 307 counterclockwise against the biasing force of the spring 308, so that the other arm 306b of the lever 306 is rotated. It moves upward in the figure to press the magnet reset spring 73, so that the armature 88 is attracted to the yoke 87. Therefore, the engagement between the engagement portion 90a of the engagement claw 90 and the gear 93a is released, and the gear train 93 becomes rotatable.

Next, regarding the opening operation of the throttle, as the gear 59 rotates counterclockwise, the throttle cam 71 also rotates counterclockwise, but a portion with a constant lift amount is provided, and the engagement between the locking portion 90a and the gear 93a is released. After that, the lift amount is gradually increased. Therefore, the pin 83 is pushed upward, and the aperture regulating lever 80 rotates counterclockwise to raise the lever 79, so that the aperture of the lens 78 is opened. When the lever 80 is rotated counterclockwise, the diaphragm holding lever 75 is rotated clockwise by the urging force of the spring 76, and the hook portion 75a locks the pin 81, so that the released state of the diaphragm is maintained. The tip 71a of the squeezing cam 71 rotates to the left as it lifts the end 102a of the holding release lever 102. At this time, the lever 102 only turns right against the spring 141, and the squeeze holding lever 75 moves. There is no turning to the left. Therefore, no matter how many times the squeezing cam 71 is turned counterclockwise, the squeeze is kept in the released state.

When the aperture restricting lever 80 is rotated counterclockwise, the enlarged gear train 93 also rotates, but at this time, the pawl portion 90a of the aperture stop pawl 90 is in a state of not engaging the gear 93a. In this way, the motor 600 rotates clockwise after the exposure to rotate the shaft 69 counterclockwise to return the mirror to the shooting optical path, return the diaphragm to the released state, and then further rotate right while keeping the state. It is configured to be able to continue. Next, the operation of the shutter charge system during this period will be described. When the tenth gear 60 starts rotating (right-handed) in the direction opposite to the arrow in the figure with the clockwise rotation of the motor 600 after exposure, the leading-curtain charge gear 109 rotates counterclockwise and meshes with the leading-curtain sector gear 110. Then, the gear 110 is rotated right against the action of the spring 111. However, since the pin 114 implanted in the gear 110 is in the direction of moving away from the front curtain arm 113, the front curtain arm 113 does not move at this time. Similarly, the rear curtain arm 113 'does not move.

After that, the engagement between the front curtain charge gear 109 and the front curtain sector gear 110 is released, and the front curtain sector gear 110 is rotated counterclockwise by the urging force of the spring 111 to return to the position shown in the figure. Similarly, the rear curtain sector gear 110 also returns to the left by the action of the right-handed rear spring 111 '. As described above, the shutter charge system also has a configuration in which the clockwise rotation of the motor 600 after exposure may be performed any number of times.

Next, the operation of the film feeding system will be described. After the exposure, when the motor 600, that is, the pinion 32 is rotated clockwise, the third gear 37 is rotated counterclockwise through the reduction gear train. At this time, the pin 37a planted in the third gear 37 also moves accordingly, and pushes the arm portion 65a of the hoisting restriction releasing lever 65, so that the lever 65 turns right.

Along with that, the pin 68 planted on the lower surface of the other end of the lever 65 pushes the arm portion 56a of the intermediate lever 56, so that the lever 56 rotates counterclockwise. As a result, the other arm portion 56b of the lever 56 pushes the pin 9e planted at one end of the hoisting limit lever 9, so that the lever 9 turns right and the hook 9b at the tip and the hoisting limiter 12 are cut. The engagement with the notch 12a is disengaged, and the hoisting limiting plate 12 becomes rotatable. That is, by driving the motor 600, the winding limitation can be reliably released. Along with this, the tip 9d of the lever 9 is locked to the tip 53a of the hoisting restriction holding lever 53, and the hoisting restriction released state is held.

At the same time when the third gear 37 rotates counterclockwise, at the same time, the rotation restricting plate 61 starts to rotate counterclockwise from the position where it is locked by the mirror raising locking pawl 62, and the film feed plate 39 also rotates in the same direction. Then, as shown in FIG. 1, when the projection 39a of the feed plate 39 and the hook portion 40a of the film feed pawl 40 are engaged, the fourth gear 42 starts counterclockwise rotation. When the gear 42 rotates, the spool 29 rotates in the arrow direction via the friction mechanism 43. The rotation of the fourth gear 42 is also transmitted to the fifth gear 44 and the sixth gear 45, and the sprocket shaft 47 also rotates counterclockwise through the engagement between the groove 45a and the sprocket upper pin 46. Therefore, the film 28 advances.

Shortly after the film starts to move, the maximum outer diameter portion 12b, instead of the convex portion 12c of the hoisting limiting plate 12, comes into contact with the pin 53b planted on the hoisting limiting holding lever 53. This lever 53 is rotated counterclockwise around the shaft 54 by the action of the spring 55, and the tip 9d of the lever 9 is unlocked. That is, this releases the hoisting restriction release holding state. Therefore, the lever 9 turns counterclockwise by the action of the spring 52, and its hook portion 9b comes into contact with the maximum outer diameter portion 12b of the limiting plate 12.

After that, the notch 12a is opposed to the pin 53b. However, the shape of the pin 53b is round, and the right-hand rotation of the winding-limit holding lever 53 is larger than a predetermined amount. By being restricted by the tip 9d, the pin 53b does not fit into the notch 12a and lock the rotation of the hoisting limiting plate 12.

When the winding restricting plate 12 rotates and the notch 12a faces the hook 9b of the winding restricting lever 9, both are engaged with each other, the restricting plate 12 cannot rotate, and the subsequent winding does not proceed. This completes the winding of one frame of film. At the same time, the arm portion 9a of the winding limit lever 9 that rotates leftward is displaced to the right in FIG. 1, so that the winding limit switch SW5 is turned off and the motor control circuit detects this and stops the right rotation of the motor 600.

During this time, the sprocket upper gear 50 and the sprocket gear 51, which are fixed to the sprocket shaft 47, continue to rotate, and as the feed claw portion 25 moves leftward in FIG. 25b feeds the sheet counting ratchet wheel 17 by one tooth and opposes the advanced scale or index 24 of the sheet counting plate 20. On the other hand, when the feeding claw 25 is returned to the right, the locking portion 13a of the number counting locking claw 13 prevents reverse rotation of the number counting ratchet wheel 17. Further, during the film feeding, the diaphragm drive system, the shutter charge system and the mirror drive system are idle. The above is the description of the operation relating to shooting and subsequent film advance. Next, in order to take a picture, the push button 100 may be pressed again, and at this time, the above-mentioned sequence is repeated.

Next, the rewinding operation after the filming of one film is finished will be described. When the rewind button 7 is pushed upward, the sprocket shaft 47, which is normally urged downward, rises, and the one end 6b of the rewind holding lever 6 is pushed below the stepped portion 7a of the button 7 by the urging force of the spring 139. Enter and maintain sprocket shaft 47 in raised position.

The rewind button switch SW15, which has been on until now, is turned off with the leftward rotation of the rewind holding lever. The function of the switch SW15 will be described later.

As the shaft 47 rises, the sprocket upper pin 47a escapes upward from the groove 45a of the sixth gear 45, and the sprocket 49 and the sprocket shaft 47 move the sixth gear 45 and the gear 44 interlocked therewith. Apart from 42, it will be able to rotate freely.

On the other hand, since the sprocket upper gear 50 and the sprocket shaft 47 are integrated, the gear 50 also moves to the raised position when the shaft 47 moves up, and the conical portion 50 a provided on the gear 50 causes the rewinding interlock. The first lever 150 is turned counterclockwise about the shaft 152 against the spring 151. A rewinding interlocking second lever 153 is similarly fixed to the shaft 152 of the lever 150, and when the lever 150 is rotated leftward, its tip 153a moves leftward in FIG.

Next, when the rewinding lever 155 is turned clockwise by about 90 °, the rewinding cam 157, which is a unit, also rotates by the same angle via the shaft 156, and the rewinding lever 155 is urged downward. The return shaft 158 is raised by this cam 157. The shaft 158 is vertically movably held by a pulley 159 via a pin 158a and an elongated hole 159a, and has a rewinding fork 161 at the upper end. When the shaft 158 rises, the fork 161 is a spool of a cartridge not shown. Can be engaged with. When the cam 157 is turned to the right, the rewind switch SW14 is pressed and turned on. This signal causes the motor 600 to rotate rightward and the film feed plate 39 to rotate leftward by the action of the control circuit, and the engagement between the film feed plate 39 and the film feed pawl 40 is soon released. In other words, when the rewind button 7 is pressed and the leading end 153a of the lever 153 moves to the left, the winding of all the films is completed, and in most cases, the film is disabled before the last frame is wound up. The projection 40b of the film feeding claw 40 is not necessarily located at a position facing the tip 153a of the second lever 153. However, if the film feeding plate 39 is turned counterclockwise by the rewinding operation, the projection 40b will be rotated within one rotation. The hook portion 40a is displaced rightward in FIG. 1 by being pushed by the front end 153a of the feed plate 39, and the engagement with the projection 39a of the feed plate 39 is released.

On the other hand, since the third gear 37 and the rewinding gear 163 are always meshed with each other, when the gear 37 rotates counterclockwise, the shaft 164 and the first pulley 165 to which the gear 37 is fixed rotate clockwise. A belt 166 is stretched between the first pulley 165 and the second pulley 158 with a tension applied by a slack removing roller 167. Therefore, when the first pulley 165 is rotated clockwise, the second pulley 158 also rotates in the same direction, and the vertical groove 159a provided at the upper portion of the second pulley 158 engages with the pin 158a, so that the rewind shaft 159 to which the pin is attached also. Rotate. Therefore, the spool of a cartridge (not shown) is rotated through the rewinding fork 161 to rewind the film.

At this time, the sprocket 49 can be freely rotated in the reverse direction as described above, but the spool 29 can be rotated in the reverse direction by slipping of the friction mechanism 43, as in the conventional mechanism. When the rewinding of the film is completed, the roller 801 that was in contact with the film and was rotating is no longer pressed by the film 28, so it is displaced forward in the figure by the urging force of the switch SW16, and the roller is attached. The lever 802 that is rotating turns clockwise around the shaft 803, and the switch SW16 is turned on. Therefore, the motor 600 is stopped by the action of the control circuit.

After that, when the rewind lever 155 is returned to the position shown in FIG. 1, the rewind fork 161 is lowered and the rewind switch SW14 is also turned off. A reverse rotation preventing claw 189 is provided for the curling force of the film 28 or for preventing the gear 42 from rotating during rewinding. This completes the unwinding process. After this, open the case back and take out the cartridge.

Next, the operation at the time of multiple exposure will be described. Since the camera is always stopped in the state where the film feed is completed, the operation to instruct multiple exposure is performed before giving the first exposure. When the multiple exposure lever 171 is rotated clockwise, the shaft 172 and the multiple lever 173 are also integrally rotated clockwise, and the tip 173 a of the lever 173 contacts the pin 174.

Since the lever 173 pushes the arm portion 65b of the hoisting restriction release lever 65 during clockwise rotation, the lever 65 is rotated counterclockwise against the spring 66 and held at that position by a mechanism (not shown). Therefore, the arm portion 65a of the release lever 65 is retracted from the position where it can be engaged with the pin 37a planted in the third gear 37. Therefore, the lever 9 is not rotated rightward via the levers 65 and 56.

Further, when the lever 173 is turned clockwise, the multiple identification switch SW2, which has been in contact with the lever 173 until then, is released, and the switch SW2 is switched from the previously ON state to the OFF state. The function of the switch SW2 will be described later.

When the multiple exposure command is issued in this way, the hoisting limiting plate 12 can be rotated even after the exposure (completion of running of the rear curtain) is performed by rotating the motor to the right by a predetermined rotation angle (mirror return stroke). I won't. Therefore, the clockwise rotation of the motor 600, that is, the counterclockwise rotation of the gear 37 is mechanically blocked when the film feed plate 39 and the film feed pawl 40 are engaged, and the inertia of the motor 600 prevents the film feed from continuing. This is a phenomenon different from the above-mentioned shooting operation. That is, at the time of photographing, the pin 37a rotates the lever 65 rightward in the middle of the mirror to rotate the lever 9 rightward via the lever 56, and the hoisting limiting plate 12 is locked by the hoisting limiting lever 9. It was canceled.

To energize the motor 600, the pin 37a provided on the third gear 37 turns the multiplex switch interlocking lever 176 counterclockwise about the shaft 177 to turn on the multiplex stop switch SW3. It will be cut off by the action of the control circuit to detect. At that time, the engaging portion 39a of the feed plate 39 and the hook portion 40a of the feed plate 40 are engaged.

In the above-described normal shooting mode, when the rear curtain switch SW 4 is turned on in association with the operation of the shutter by the action of the control circuit, the motor 600 starts rotating rightward and the winding limit switch SW 5 returns to the mirror. When the film feed is completed, it is turned on once, and when it is turned off, the motor 600 is de-energized. However, in the multiple shooting mode, the switch SW5 remains off even when the mirror is restored. Therefore, when the switch SW5 is off and the switch SW3 is on, the motor 600 is stopped by the action of the control circuit. It has become so. Thus, the first exposure is completed.

Next, the second exposure is performed. In this case, before the release button 100 is pressed, the multiple exposure lever 171 is manually turned counterclockwise to return it to the original position, or in relation to the first exposure. When it is rotated counterclockwise by a known method, the hoisting limit release lever 65 is rotated clockwise by the urging force of the spring 66 and returns to the position shown in the figure, and the operation described in detail above is performed. That is, after the second exposure is completed, the film 28 is fed by one frame and stopped. The situation is exactly the same for multiple exposures of triple exposure and above, and the lever 171 may be returned to its original position before pressing the button 100 for the final exposure.

Here, if the photographer forgets to manually return the multiplex lever 171 before the final exposure of the multiple exposure, the film is not fed even after the final exposure, so that the next screen shot is a new screen. Instead of shooting, the unintentional re-exposure will be performed on the multiple exposure screen.

Therefore, FIG. 5 shows a modification in which the returning operation of the multiple lever 171 is performed not before the final exposure of the multiple exposure but after the final exposure. A cam 651 is fixed below the shaft 172 that is integral with the multiple lever 171, and when the multiple lever 171 is rotated clockwise, the cam 651 pushes one arm 652a of the lever 652 from the side surface. Therefore, the lever 652 is rotated counterclockwise around the shaft 653 against the biasing force of the spring 654. The cam 651 further rotates counterclockwise and rides over the lever 652. Since the lever 652 is not interfered with by the cam 651, the lever 652 is rotated right and returned to the position shown in the figure, and is held at that position. At this time, the lever 173 rotates the lever 65 counterclockwise to retract the arm 65a from the rotation path of the pin 37a in FIG. The shaft 653 is planted in the lever 655, but the lever 655 is biased in the counterclockwise direction by the biasing force of the spring 657, so that the lever 655 is not moved by the counterclockwise rotation of the lever 652.

However, when the multiple lever 171 is turned counterclockwise after the last photographing of the multiple exposure, the cam 651 tries to rotate the lever 652 clockwise by capturing and pressing the tip of one arm 652 a of the lever 652. However, the lever 652 cannot rotate clockwise because it contacts the pin 655a of the lever 655, and this pressing force causes the lever 655 to rotate clockwise around the shaft 656.

A pin 658 is planted at the tip of one arm of the lever 655, and the pin 658 can come into contact with the lever 56 described in FIG. 1, so that the lever 56 rotates counterclockwise. The hoisting limit lever 9 described above also rotates clockwise in conjunction with it.

At this time, since the hoisting limit switch SW5 shown in FIG. 1 is turned on, the circuit feed causes the film feeding to be started. That is, the screen after the multiple exposure is moved because the film 28 is wound around the spool 29, and the next unexposed screen stops facing the aperture (not shown). The end of this film feed is the same as that explained in the past, and will not be touched again. This is the end of the description of multiple shooting.

It should be noted that this mechanism can be used for photographing in a situation where it is difficult to make a film winding sound. That is, before taking the picture, the multi-lever 171 is turned to the right so that the film is not wound immediately after the exposure, and when the winding sound is allowed, the lever 171 is turned to the left to wind the film. Can be done.

The relationship between the operation of each system and the switches that limit the operation is summarized based on FIG. The full press switch SW6 is on when the diagram shows a high level, and is off when the diagram shows a low level. The motor 600 shows a left-handed rotation when the diagram is above the reference line indicating a stop, and a right-handed rotation when the diagram is below. The diagram of the resistor 302 shows its resistance level. The coil diagram of the diaphragm control magnet 85 shows current values. The diagram of the mirror holding frame 132 shows ascending and descending. In the diagrams of the mirror down position detection switch SW7 and the mirror stop switch SW7, the high level is on and the low level is off. In the diagram of the shutter front curtain 115, the charging direction is downward from the reference line, and the reference line is the traveling completion position. The same applies to the shutter rear curtain 115 '. The coil diagram for the front curtain magnet 135 shows the current. The same applies to the coil 135 'for the rear curtain magnet. Regarding the diagrams of the trailing curtain running completion switch SW4, the multiple hoisting stop switch SW3, the hoisting limit switch SW5, and the film rewinding end switch SW16, the high level indicates ON and the low level indicates OFF.

Here, the photographing sequence will be summarized according to the time chart of FIG. When the film counter indicates "1" and the subject is determined and the switch SW6 is turned on, the motor 600 rotates counterclockwise, and the diaphragm drive system and the shutter charge system are driven. At the same time, the mirror driving system is driven to raise the holding frame 132 from the observation position to the photographing position. When the holding frame 132 moves up, the switch SW7 turns on and the motor 600 stops. Subsequently, the front curtain 115 and the rear curtain 115 ′ charged for exposure run, and at that time, the exciting currents of the magnets 135 and 135 ′ are turned on.

When the traveling of the rear curtain 135 is completed, the switch SW4 is turned on, which causes the motor 30 to start rotating to the right. As a result, the mirror holding frame 102 is lowered and the diaphragm is opened. The motor 600 continues to rotate clockwise and drives the winding system to feed one film. During this time, neither the diaphragm drive system, the shutter charge system nor the mirror drive system is driven. The right rotation of the motor 600 is stopped by turning off the switch SW5. After shooting all frames, the button 7 is pressed to release the engagement between the pin 47a and the groove 45a, disconnect the connection between the motor 600 and the hoisting system, and engage the rewind coupling 161 with the cartridge. At the time of rewinding, the switch SW14 shown in FIG. 1 is turned on to start rewinding, and the motor 600 rotates clockwise to store the exposed film in the cartridge. When the rewinding is completed, the switch SW16 is turned on and the motor 600 is stopped. When the switch SW3 is turned on during multiple exposure, the right rotation of the motor 600 is stopped and the subsequent steps are cut.

Now, the low-speed drive, that is, the silent mode for operating the camera operating in this way extremely quietly will be described. FIG. 7 is a schematic view of the outside of the camera. Reference numeral 401 denotes an operation lever of the speed change switch, which can be changed over to three stages of H, N, and L as shown in the view seen from above in FIG.

Now, when the L index 402 and the lever 401 are made to face each other, the switch described later is switched inside the camera, and only the mirror return and aperture opening steps and the film feeding step in FIG. The function controls the motor 600 to drive it at an extremely low speed. Therefore, the time required for the aperture control process and the mirror raising process does not change, and the photographer can accurately capture the shutter chance, and the precision of the aperture control does not change, which is convenient. On the other hand, the sound volume after shooting, which accounts for most of the camera operating noise, can be extremely reduced. This silent mode can also be used for slow film feeding to prevent film damage in cold regions.

Next, when the battery pack 403 in FIG. 9 which is replaceable with respect to the camera body 404 is converted into another high power pack 405 shown in FIG. 10 which generates a higher voltage, as shown in FIG. The contact piece 411 of the switch 406 in the camera body is switched from the state in which it is in conduction with the terminal 408 to the state in which it is in contact with the terminal 407. This is because the effective lengths h of 409 and 409 'of the reference pins 409, 410 and 409', 410 'for positioning at the time of attachment provided on the packs 403, 405 are different from each other. It operates depending on whether or not the insulating portion 411a at the tip of the piece 411 is pressed.

Note that 412 and 412 ′ are terminals for supplying power to the camera body 404. An appropriate receiving mechanism is provided in the camera body 404 for these terminals and reference pins, but these are not shown because they are performed by known means.

When the switch 406 is in the state of FIG. 11, when the lever 401 of FIG. 8 is switched to H, the switch described later is switched inside the camera, and the mirror return and aperture opening processes and the film feeding process in FIG. The function of the circuit described later controls the motor 600 to drive it at a higher speed. Therefore, the time required for the aperture control process and the mirror ascent process does not change, the shutter chance can be accurately captured by the photographer, and the aperture control accuracy does not change. The shooting screen will not be displayed. On the other hand, since the time required for one shooting cycle is shortened, the shutter chance is increased accurately.

FIG. 12 shows an embodiment of a circuit for controlling the mechanical section of FIG. In the figure, the mirror lowering position switch SW1 is turned on when the mirror holding frame 132 is lowered to a predetermined position as described in FIG. 1, and is turned off when it is raised. As described with reference to FIG. 1, the multiple shooting switching switch SW2 is ON when the multiple shooting switching lever 171 is in the normal shooting position, and is OFF when it is in the multiple shooting position. The multi-winding stop switch SW3 is turned on during a predetermined phase from just before film feeding and during a predetermined phase from just before film feeding is completed, and is turned off in other cases as described in FIG. . The trailing-curtain traveling completion switch SW4 is turned on when the trailing shutter of the shutter is closed and is turned off when the shutter is reset, as described in FIG. As described with reference to FIG. 1, the winding-up limit switch SW5 is turned on during the mirror return process, and is turned off when the film feeding is completed. The full-push switch SW6 is turned on when the push button 100 is pushed to the final stroke as described in FIG. 1, and turned off when the push button is returned. As described with reference to FIG. 1, the mirror stop switch SW7 is turned on when the mirror holding frame 132 is raised to a predetermined position, and turned off when it is lowered. The SC switch SW8 is a switch not shown in FIG. 1, and is S side (ON) when the switching lever (not shown) selects the single frame shooting mode, and C side (when the continuous shooting mode is selected ( By switching each of them to OFF, control of one frame or continuous shooting is performed as described later.

As shown in FIGS. 8 and 9, the changeover switch SW9 is a switch whose a or b terminal is selected in conjunction with the operation lever 401 of the speed changeover switch, and when the operation lever selects the highest speed, the b terminal side. The other terminals are on the a terminal side. In addition to the operation lever 401, a variable resistor VR2 for varying the motor speed and a variable resistor VR3 for varying the detection time of the film end detection timer are also associated. The interlocking relationship is such that the variable resistance VR2 has a higher resistance value as the operating lever selects a higher motor speed, and the variable resistance VR3 has a lower resistance value as the higher speed side is selected.

The switch SW10 is a main power switch which is not shown in FIG. 1. The switch SW10 is set to ON when the camera is used, and when the camera is not used, the push button 100 shown in FIG. 1 is inadvertently operated. However, it is a switch that turns off the power so that the camera does not shoot.

[0088] Switch SW11 is automatically switched Ri battery E _B 605 side switching the connectors for the external from the power supply is plugged into an external power connector 605 of Figure 12 with the power changeover switch not shown in FIG. 1 Separated to become the external power supply side. Is it switched to side to be fed to the circuit by the battery E _B when the connector 605 connector of the external power supply is not connected. The change-over switch SW11 may be the switch 406 shown in FIG. 11 so that the battery packs 403 and 405 can be selectively used as shown in FIGS.

As described with reference to FIG. 1, the back cover open / close switch SW12 is turned off when the back cover is open, and is turned on when the back cover is closed. The switch SW17 shown in FIG. 13 is also a switch that is interlocked for opening and closing the back cover, and is interlocked with the release lever 5 shown in FIG. 1, and is turned on when the back cover is opened and turned off when the back cover is closed.

The half-push switch SW13 is turned on when the push button 100 is half-pushed as described in FIG. 1, and is turned off when the push button is returned. The rewind switch SW14 is turned on when the rewind lever 155 shown in FIG. 1 is set to the rewind state, and is turned off at the normal film feeding position. The rewind button switch SW15 is OFF when the rewind button 7 is pressed and rewinding is possible as described with reference to FIG. 1, and is ON in a normal photographing state. The film rewind switch SW16 is turned off when the film 28 is wound around the spool 29 as described with reference to FIG. 1, and is turned on when the film is removed from the spool or when there is no film.

The DC speed generator 601 connected to the motor shaft of the motor 600 is hidden and invisible in FIG. The DC speed generator 601 changes its power generation polarity depending on the rotation direction of the motor 600. In FIG. 1, the output of the speed generator 601 when the motor 600 is in the right-handed state is positive at the connection point side with the diodes D1 and D2, and when the motor 600 is in the left-handed state, the positive connection point is with the diodes D3 and D4. The generated voltage in each polarity is proportional to the rotation speed of the motor 600. 12, Mg ₁ , Mg ₂ , and Mg ₃ correspond to the aperture control magnet coil 85, the shutter front curtain start magnet coil 135, and the shutter rear curtain start magnet coil 135 'in FIG. The variable resistor VR1 in FIG. 13 is a variable resistor for controlling the aperture, which is constituted by 302 and 303 in FIG. LED1 in FIG. 12 is a light emitting diode (not shown in FIG. 1) for displaying a warning in the multiple shooting mode, which blinks in the multiple shooting mode. The LED 1 is arranged at a known and easy-to-see position such as in the viewfinder. LED2 in FIG. 12 is a light emitting diode for warning display, which is not shown in FIG. 1, and is turned on when film photographing is completed or when rewinding is completed, and rewind button operation is performed when rewinding. Blinks if you do not perform. The LED 2 may be arranged in the finder like the LED 1. Next, the operation of the circuit will be described. Feed circuits because nothing is connected to the external power connector 605 power switching switch SW11 as performed by battery E _B in the camera that has become E _B side. In the following description, the main power switch SW10 is ON. (1) Operation of the circuit when the film is loaded (1) -1 Operation when the back cover is open At this time, the back cover opening / closing switch SW12 is OFF, the switch SW17 is ON, and winding as described in the explanation of FIG. The upper limit switch SW5 is ON. Since the rewind lever 155 in FIG. 1 is in the normal position, the rewind switch SW14 is off. The switch SW9 is connected to the a terminal side. When the push button 100 is pushed in this state, the half push switch SW13 is turned on, and the transistor Q11 is controlled to be turned on through the resistor R8 to energize the circuit. In FIG. 12, the transistor Q11 is used to energize a circuit whose power supply line is not indicated. When the transistor Q11 turns on, the transistor Q12 also turns on, but since the switch SW12 turns off, it has no effect on the control of the transistor Q11. Therefore, the circuit is energized only when the half-push switch SW13 is ON. When the circuit is energized, the output of the inverter INV4 becomes L for a fixed period determined by the capacitor C1 and the resistor R1 in the initial stage of energization, and the flip-flop circuits (G7, G8), (G20, G21), (G26, G27) is reset and other digital circuits (not shown) are reset. By the reset operation, the NAND gate G7 output is L, G8 output is H, G20 output is H, and G21 output is L. As described with reference to FIG. 1, since the hoisting limit switch SW5 is held ON, the G3 output is H and the inverter INV1 output is L. Therefore, the output of G6 is held at H, and the set operation by the push button switch SW6 of the flip-flop circuits G7 and G8 described later is not performed.

Since the rewind switch SW14 is OFF, the output of the inverter INV13 is L, the outputs of the AND gates G16, G17, G23, G31 are L, and the output of G32 is H. The output of the inverter INV5 is H because the output of the NAND gate G7 is L. Since the inputs of the AND gate G9 are all H, the output is H and the output of the NOR gate G10 is L. Since the transistor Q16 is OFF, the capacitor C6 is charged through the variable resistor VR3, but the output of the comparator A2 is until the voltage of the capacitor C6 reaches a predetermined voltage, that is, until a predetermined time determined by the time constant circuits VR3 and C6 elapses. Holds the H 2 state. Therefore, the output of the AND gate G13 is L, the output of the AND gate G14 is H, and the output of the OR gate G15 is H. The H output of the OR gate G15 turns on the transistor Q10 via the diode D6 to short-circuit the capacitor C11 to discharge the electric current and hold the OFF state of the transistor Q9. At the same time, the transistor Q6 is biased to ON via a resistor, so that the transistors Q1 and G7 are turned ON. Since the AND gate G13 is L, the transistors Q3, Q4 and Q2 are OFF. Thus the motor 600 is a current flow in this direction current in the direction of the transistor Q1 → motor 600 → transistor Q7 than the battery E _B is the motor 600 is Ru Migi旋Su. When the motor 600 rotates clockwise, the DC speed generator 601 also rotates in the same direction, and current flows through the variable resistors VR2 and R7 via the diodes D1 and D4 as described above. When the rotation speed of the motor 600 rises and the voltage of the resistor R7 and the (+) input terminal of the comparator A1 rises and exceeds the voltage of the reference voltage E _S , the output of the comparator A1 becomes H and the transistors Q5 and Q8 become ON. . When the transistor Q8 is turned on, the transistor Q6 is turned off and the transistors Q1 and Q7 are also turned off, so that the motor 600 is not supplied with power and the rotation speed is reduced. That is, since the speed feedback is applied to the rotation of the motor 600, it is controlled to a predetermined number of rotations depending on the resistance value set in the variable resistor VR2. The speed feedback operation described above is performed when the changeover switch SW9 selects the terminal a side in conjunction with the operation lever 401 of the speed changeover switch. When the changeover switch SW9 is on the terminal b side, that is, when the maximum speed is selected, the generated voltage of the direct current speed generator 601 is not transmitted, so the speed feedback operation is not performed and the maximum speed depending on the voltage of the power source E _B is reached. The motor 600 rotates. Since the ON / OFF state of the transistor Q17 in this state does not participate in the control operation, its explanation is omitted. When the half-push switch SW13 is turned off or the predetermined time determined by the time constant circuits VR3, C6 has elapsed, the transistors Q6, Q10 are turned off, and the predetermined time determined by the resistance and the capacitance of the capacitor C11 via the capacitor C11. After a lapse of time, the transistor Q9 is turned on, and only the transistors Q1 and Q2 are turned on in a predetermined time via the diodes D9 and D10. Since the rotation of the motor was in the clockwise direction, the motor 600 is short-circuited via the diode D7 and the transistor Q2, and the motor is braked and stopped rapidly. After the motor 600 is stopped, the charging of the capacitor C11 is completed, the transistor Q9 is turned off, and the transistors Q1 and Q2 are also turned off. That is, in this state, while the half-push switch SW13 is being pressed, when the time is within a predetermined time determined by the variable resistor VR3 and the capacitor C6, the half-push switch SW13 is turned on, and the half-push switch SW13 is turned on. When the pressed time is longer than the predetermined time, the motor 600 rotates clockwise for the predetermined time.

By the way, since the switch SW17 is ON when the case back is open, the reference voltage applied to the (+) side of the comparator A2 is lower than when the switch SW17 is OFF. Therefore, the predetermined time until the output of the comparator A2 is inverted to L when the switch SW17 is ON for the same set value of the variable resistor VR3 is shorter than that when the switch SW17 is OFF. Has become. The reason is that it is necessary to lengthen the timer time by the timer circuits VR3, C6, A2 beyond the time required to wind the film to the shooting position of the first frame after closing the back cover as described later. When the back cover is open and the time remains long for a long time, if the half-press switch SW13 is turned on for a long time, the film is wound on the spool more than necessary and the film is wasted. Consumption will occur. This is because the push button operation by the user cannot keep up with the spool winding speed when the film is loaded in the high-speed winding state in which the changeover switch SW9 is switched to the b terminal side. However, it can also be caused by carelessness. Therefore, in order to avoid such a situation, when the back cover is opened, the switch SW17 is turned on to shorten the timer time and the reference voltage is lowered to shorten the timer time, and the switch SW17 is turned ON to shorten the timer time and the reference voltage is lowered. To lower the timer time. The timer time is set within a range in which the spool 29 of FIG. 1 makes about one rotation, and it is controlled in relation to the speed of the motor by a variable resistor VR3 set in association with the rotation speed of the motor. Therefore, as a normal operation, the required take-up amount can be obtained by inserting the leading end of the film 28 into the take-up spool 29 and then continuing to push the push button 100 until the motor stops at a predetermined time by the timer. (1) -2 Operation when the back cover is closed By the operation of (1) -1, the film 28 is surely wound onto the spool 29 and then the back cover of the camera is closed. The film is fed to the shooting position of the first frame of the film. The operation is performed as follows. When the back cover is closed, the back cover open / close switch SW12 changes to ON, the switch SW17 changes to OFF, and the hoisting restriction switch SW5 remains ON. When the push button 100 is pressed in this state, the half-press switch SW13 is turned on and the transistor Q11 is turned on, so that power is supplied to the circuit, and the motor 600 is rotated rightward for the same reason as the operation of (1) -1. Even if the half-press switch SW13 is turned off, the positive feedback operation of the transistor Q12 keeps the ON operation of Q11 for a predetermined time (usually about 20 seconds to several minutes is selected) defined by the resistor R8 and the capacitor C12. The power supply to

Therefore, the film is fed, and a predetermined amount of film is fed as described with reference to FIG. 1, and when the photographing position of the first frame is reached, the winding limitation switch SW5 is turned off. As shown in FIG. 1, the rear curtain running completion switch SW4 is turned off when the camera is released and the motor 600 is rotated to the left to charge the shutter. Therefore, the mirror 132 is turned on in this state. The mirror lowering position switch SW 1 is ON because it is descending to. Therefore, since the outputs of the AND gates G1 and G2 are held at L, the output of the OR gate G3 becomes L when the hoisting switch SW5 is turned off, and the outputs of the AND gates G9, G14, and OR gate G15 become L. The clockwise rotation of the motor 600 is suddenly stopped, and the film idling operation is completed. The output of the NOR gate G10 becomes H and the transistor Q16 is turned on, so that the capacitor C6 of the timer circuit is reset. While the film is being fed, the transistor Q16 is off and the timer circuit by the variable resistor VR3 and the capacitor C6 operates. However, the variable resistor VR2 that sets the right turn speed of the motor 600 is linked to the variable resistor VR2. Since VR3 is set and the idling amount is set to a predetermined amount by the film counter mechanism in FIG. 1, the idling time is set in relation to the right turning speed of the motor 600. Since the time until the output of A2 by VR3 and C6 reverses is set long, the motor stop operation by the output of A2 reversing L is not performed during the normal idling operation. The predetermined time in this case is longer than the predetermined time described in the operation (1) -1. It is controlled by the switch SW17 being turned off when the back cover is closed, and the (+) side reference voltage of the comparator A2 rising. When the film is caught and stopped halfway, or when the mechanism does not allow the idling operation, the winding limit switch SW5 will not turn off within a predetermined time by VR3 and C6, so the A2 output will be output. The output of the inverter INV10 becomes H, the output of the OR gate G18 becomes H, the light emitting diode LED2 lights up, and a warning is displayed. In the operation of (1) described above, since the flip-flops (G7, G8) (G27, G26) are not inverted, the exposure control described in (2) below is not performed. The speed of the idling operation at this time is arbitrarily selected by the speed switching lever 401 as described above.

(2) Photographing Operation (2) -1 Normal Continuous Photographing Operation In the following description, it is assumed that the changeover switch SW9 is selected at the a terminal side. The description of the state in which the SW 9 selects the b terminal side will be described later. In this mode, the SC changeover switch SW8 selects the C side (OFF). Since the normal photographing mode is selected, the multiple photographing changeover switch SW2 is turned on and the output of the AND gate G1 is held at L. Further, since the mirror lowering position switch SW1 is in the ON state when the mirror before being released is lowered, the output of the AND gate G2 is also L, and when the film skipping is completed, the winding limitation switch SW5 is also O. Since it is FF, the output of the OR gate G3 is L, and the outputs of the NAND gate G30 and the inverter INV1 are H. When the pushbutton switch SW6 is turned on by operating the pushbutton 100 in FIG. 1, the output of the inverter INV2 becomes H, and the output of the NAND gate G30 becomes H, so the output of the AND gate G4 becomes H and the inverter INV3 Output changes from H to L. On the other hand, assuming that the predetermined reset time by the time constant circuits G1 and R1 has elapsed, the output of the inverter INV4 is H, and the mirror stop switch SW7 is in the lowered position of the mirror before release as described in FIG. 1 is OFF, the rewind switch SW14 interlocking with the rewind lever 155 in FIG. 1 is OFF, and the rewind button switch SW15 is ON, so that the AND gates G16 and G31 outputs L and the NOR gate G32. The output is high. Since the inputs of the AND gate G5 are all H, the output thereof is H. Further, the output of the inverter INV1 is also H as described above. Therefore, the output of the NAND gate G6 becomes L for a predetermined period defined by the time constant circuits R2 and C2 after the pushbutton switch SW6 is turned ON, and therefore the flip-flops G7 and G8 are inverted and the output of the NAND gate G7 is output. Turns to H. The predetermined time by R2 and C2 is only the time required to invert the flip-flops G7 and G8, and the output of the NAND gate G6 returns to H immediately after the inversion. When the output of the NAND gate G7 becomes H, the inverter INV5 becomes L, the output of the ADN gate G9 is held at L, and the output of the NOR circuit G10 becomes L. As a result, the transistor Q16 becomes OFF, so that the timer circuit VR3, C6, and A2 start timing. At the same time, the output of the AND circuit G13 becomes H, the transistor Q3 is turned on, the transistors Q2 and Q4 are turned on, and the transistor Q10 is turned on via the diode D5, so that the transistor Q9 is held off. The output of the AND gate G14 is L because the output of the AND gate G9 is held at L, and the output of the AND gate G16 is also L, so that the output of the OR gate G15 is L, and Q6, Q7, and Q1 are off. When a current in the direction of Q2 → motor 600 → Q4 flows to the motor 600 by turning on the transistors Q2 and Q4, the speed generator 601 also rotates counterclockwise, and the generated voltage in that case is to the anode of the diode D3. Since the connected side has a positive polarity, a current flows in the direction of D3 → R6 → R7 → D2, and when the voltage generated across the resistor R7 becomes the voltage of E _S , the comparator A1 is inverted and the transistor Q5 By turning ON, the speed feedback control is performed in the left-handed state as described above. That is, the speed control of the motor 600 is performed so that a predetermined counterclockwise rotation speed is obtained by the division ratio of R6 and R7, and the set speed in that case is sufficient to secure control accuracy when electrically controlling the aperture value. A constant speed is controlled in order to maintain a constant shutter release timing. By rotating the motor 600 counterclockwise, the shutter is charged and the mirror is raised as described in FIG. 1. First, the trailing curtain travel completion switch SW4 is turned off, and then the mirror lowering position switch SW1 is turned off. The G3 output is still held at L. On the other hand, if the memory fixed switch SW18 is turned off, the output of the OR gate G11 becomes H because the output of G7 is H, and the state is reset by flipping the mirror stop switch SW7 and turning on the mirror stop switch SW7 described later. Even if the output of G7 turns to L, the mirror lowering position switch SW1 is held because it is OFF. The H level signal of the OR gate G11 is transmitted to the P1 terminal of the exposure control unit 604. While the P1 terminal of the exposure control unit 604 is at the H level, a known photometric value storage circuit in the exposure control unit 604 operates, and specifically stores the photometric value of the photodiode PD which is a light receiving element. That is, when the push button switch SW6 is turned on, the photometric value is stored at the same time and is held until the exposure is completed and the mirror 132 in FIG. 1 is lowered to a predetermined position. When the mirror 132 of FIG. 1 is raised to a predetermined position, the mirror stop switch SW7 is turned on, the output of the AND gate G5 is set to L, the output of the NAND gate G6 is held at H, and the flip-flops G7 and G8 are reset. The output of G7 becomes L. While the pushbutton switch SW6 is turned on and the G7 outputs of the flip-flops G7 and G8 are H, the output of the AND gate G19 can respond to the output of the aperture control signal terminal P2 of the exposure control unit 604. In the shutter priority mode, program mode, and other modes for electrically performing aperture control, the P2 terminal changes from L to H when the aperture value reaches a predetermined aperture value based on the metering memory value of the exposure control unit 604, and AND Since the output of the gate G19 becomes H, the transistor Q14 is turned on and the electric charge charged in the capacitor C7 is discharged through the aperture control magnet Mg _1. Therefore, the aperture control mechanism described in FIG. 1 operates. The diaphragm is controlled to a predetermined value. Feedback of the aperture value for controlling the aperture value to a predetermined value is performed by the variable resistor VR1 connected to the exposure control unit 604. The generated voltage of the generator 601 generated by the left rotation of the motor 600 is simultaneously applied to the aperture speed compensation input terminal P7 of the exposure controller 604. The reason is that there is a steady delay between the time when the aperture control magnet Mg ₁ is energized and the time when the aperture control mechanism is actually locked, which is determined by the characteristics of the magnet Mg ₁ and the inertia of the locking mechanism. Therefore, if the relationship between the delay time and the rotation speed of the motor 600 is not fixed, the accuracy of the throttle control value will be impaired in the mode in which the throttle is electrically controlled unless compensation is performed. is there. In particular, since it has a finite speed rising characteristic until it is controlled at a constant speed by the inertia of the drive mechanism including the rotor of the motor 600, the relationship between the delay time and the rotation speed of the motor 600 is fixed in that region. Since it is not, a control error occurs. Further, its rising characteristic also varies depending on the voltage of the power source E _B. Therefore, in order to eliminate the influence, the voltage related to the speed of the motor 600 by the generator 601 is transmitted to the exposure control unit 604 to perform the compensating operation of the aperture control. The compensation operation will be described later in the description of FIG. In a mode in which the exposure mode selection means in the exposure control unit 604 does not electrically control the aperture value such as the aperture priority mode and the manual exposure setting mode, the P2 output is held at L, so the AND gate G1. The output of 9 does not become H, and therefore, the aperture value is not electrically controlled.

Here, it is switched by the operation of a memory fixing member (not shown in FIG. 1), and is turned off during normal photographing. When the memory fixed switch SW18 is turned on, the output of the OR gate G11 is held at H, and the memory of the photometric value is continuously held. That is, before the push button switch SW6 is turned on, the camera is aimed at the object where the photometric value is to be stored, and the memory fixed switch SW18 is turned on so that the photometric value is continuously stored. When the push button switch SW6 is turned on, automatic exposure control is performed based on the stored photometric value instead of the photometric value of the object. When the mirror rises to a predetermined position, the G7 output of the flip-flops G7 and G8 changes from H to L, and the AND gate G5 output is held at L while the mirror is in the raised position and the mirror stop switch SW7 is ON. Therefore, the output of the NAND gate G6 is held at H. Therefore, the flip-flops G7 and G8 are prohibited from inversion operation when the mirror is in the raised position. When the G7 output of the flip-flops G7 and G8 changes from H to L 1, the left-handed drive of the motor 600 is stopped, and the output of the OR gate G3 is L 1 so that it is not right-handed and the transistor Q9 is turned on for a predetermined time. The motor 600 suddenly stops. Further, the output of the inverter INV6 changes from L to H after a predetermined time by the time constant circuits R3 and C3 as the G7 output of the flip-flops G7 and G8 changes from H to L. When the output of the inverter INV6 changes from L to H, the output of the AND gate G12 remains H for a predetermined time determined by R4 and C4, turning on the transistor Q13 and turning on the charge accumulated in the capacitor C5. Since the electric discharge is performed through the control magnet Mg ₂ , the shutter front curtain 115 in FIG. 1 starts to start the exposure. The predetermined delay time due to the time constant circuits C3 and R3 is not set to stop immediately after the motor 600 is braked, and thus is generally set to an expected time until the motor 600 is completely stopped. This is to prevent the vibration of the motor 600 from affecting the shooting. If the vibration can be ignored, this delay time may be zero. The diode D15 connected in parallel to the resistor R3 and the diode D14 connected in parallel to the resistor R4 are charged rapidly when the capacitors C3 and C4 are charged, and each predetermined delay time is generated when the capacitors C3 and C4 are discharged. It is irrelevant when you are there. Simultaneously with the operation of starting the front curtain by turning on the transistor Q13 for a predetermined time, the output of the inverter INV8 changes from H to L, the G21 outputs of the flip-flops G20 and G21 change from L to H, and the G20 output changes from H to L. At this time, the output of G22 does not change and is in the L state, so that the transistor Q15 is OFF. The front curtain start signal changed from L to H of the NAND gate G21 is transmitted to the input terminal P3 of the exposure control unit 604, and the known shutter timer circuit in the exposure control unit 604 starts.

The shutter timer circuit controls the shutter time calculated based on the above-mentioned metering memory value when performing automatic exposure such as aperture priority mode, shutter priority mode, and program mode. Timing is started using the transmitted front curtain start signal as a starting point, and when a predetermined time measurement based on the calculated value is completed, a signal changing from H to L is output to the NAND gate G20 as a rear curtain start signal at the output terminal P4. The signal change of the P4 terminal is described in detail. Before the front curtain start signal is transmitted to P3, the P4 output is held at L, and when the front curtain start signal is transmitted, the P4 output changes. At the same time, it changes from L to H, and when the timing of the shutter timer circuit ends, the P4 output changes from H to L to generate the trailing curtain start signal, and the state of L continues until the leading curtain start signal is generated again. Retained. In the manual exposure mode, the shutter timer circuit is operated at the shutter time selected by the shutter time setting member (not shown) in the exposure control unit 604. The ON / OFF signal of the push button switch SW6 is transmitted to the input terminal P5 of the exposure control unit 604.

When the second selected in the manual exposure setting mode is the valve, the P4 output has nothing to do with the shutter timer circuit, and when the front curtain start signal is transmitted to the input terminal P3, the P4 output becomes H. At that time, since the P5 input is H when the pushbutton switch SW6 is OFF, the output terminal P4 immediately outputs the rear curtain start signal which changes from H to L. If the pushbutton switch SW6 is ON, the P5 input is L, so the P4 output is held at H, and when any pushbutton switch SW6 is turned OFF thereafter, the P5 input becomes H and the P4 output goes from H to L. The rear curtain start signal that changes to is output.

When the trailing curtain start signal is generated from the output terminal P4, the outputs of the flip-flops G20 and G21 are inverted, the NAND gate G20 changes from L to H, the NAND gate G21 changes from H to L, and the time constant circuit R5, The output of G22 becomes H for a predetermined time determined by C8, and the transistor Q15 is turned on. When the transistor Q15 is turned on, the electric charge accumulated in the capacitor C9 is discharged through the magnet Mg ₃ for controlling the rear curtain, so that the shutter rear curtain 115 'in FIG. 1 starts and the exposure is completed. When the trailing curtain running completion switch SW4 is turned on by closing the trailing curtain, the G2 output becomes H because the mirror lowering position switch SW1 is still OFF in this state, and the output of the AND gate G9 is output via the OR gate G3. To H. Therefore, the transistor Q6 is turned on via the AND gates G14 and G15, so that the motor 600 rotates clockwise. Since the output of the inverter INV1 is L while the output of the OR gate G3 is H, the flip-flops G7 and G8 are not inverted by the output of G6 and the left turn signal of the motor 600 is not output. When the motor 600 starts rotating to the right, the mirror descending control and the diaphragm control mechanism are reset in the first stroke of the clockwise rotation as described with reference to FIG. When the mirror descends to a predetermined position by the right rotation of the motor, the mirror lowering position switch SW1 is turned ON, and the G2 output becomes L. However, as described above with reference to FIG. Is held at H, and the right rotation of the motor 600 is continued. When the mirror is completely lowered, film winding starts, but as described in FIG. 1, the multi-winding stop switch SW3 turns on just before the start of winding, but it is not in the multi-shooting mode. The G1 output is held at L by SW2 and is irrelevant to the operation. Since the G3 output is kept at H by turning on the winding limitation switch SW5, the right rotation of the motor 600 is continued and the film is wound. When a predetermined amount of film is wound up, the winding-up limit switch SW5 is turned off, the output of G3 becomes L, the right rotation of the motor is stopped, and the film winding process is completed. When the motor is rotated right, the right rotation speed is selected by the variable resistor VR2 and the switch SW9 as described above. When the G3 output becomes L due to the completion of film winding, the output of the inverter INV1 becomes H. Further, since the mirror is lowered, the mirror stop switch SW7 is OF F, and the G5 output is H, so that the NAND gate G6 can respond to the output change of the AND gate G4. Since the SC switch SW8 is on the C side (OFF), when the output of the NAND gate G30 changes from L to H upon completion of winding, the output of the AND gate G4 is L if the pushbutton switch SW6 is ON at that time. Changes from H to H 2. Similarly to the above, the output of G6 for a predetermined time determined by the time constant circuits R2 and C2 becomes L, and the flip-flops G7 and G8 are inverted to output the motor counterclockwise signal. Therefore, while the pushbutton switch SW6 is ON, the motor Cycle of left rotation (mirror up, narrowing) → motor stop → shutter control → motor right rotation (mirror return, aperture open) → motor right rotation (film winding) → motor left rotation (mirror up, narrowing) → ... Is repeated and continuous shooting is performed. When the pushbutton switch SW6 is turned OFF, the output of the inverter INV2 is L and the output of G4 is held at L, and the motor is stopped when the film winding is completed and the next shooting sequence is not started. Therefore, continuous shooting is stopped.

Next, the operation when the changeover switch SW9 is on the terminal b side, that is, when the maximum speed mode is selected will be described. Before the pushbutton switch SW6 is turned on, the output of G29 is L, the output of G25 is held at H, the flip-flops G26 and G27 are forcibly reset, and the output of G26 is L and the output of G28 is also L. . Therefore, the transistor Q17 is OFF. When the push button switch SW6 is turned on, the output of G29 is held at H and the forced reset operation is released. Further, as described above, the flip-flops G7 and G8 are rotated in the reverse direction, and the motor 600 is rotated counterclockwise to control the raising of the mirror and the diaphragm. However, at this time, the H-level pulse output of the AND gate G12 is not generated yet. The output of the NAND gate G25 does not change in the H state. Therefore, the states of the flip-flops G26 and G27 do not change, and the G26 output L, G28 output L and the transistor Q17 are OFF. Therefore, the motor speed during counterclockwise rotation is controlled by constant speed feedback. When the raising of the mirror is completed, the switch SW7 is turned on to reset the flip-flops G7 and G8 and stop the motor, and after a predetermined time by R3 and C3, the output of the AND gate G12 becomes H for a certain time. The H output of the AND gate G12 starts the front curtain of the shutter to start exposure, the output of the NAND gate G25 becomes L, the flip-flops G26 and G27 are set, and the output of G26 becomes H. The exposure mode output signal terminal P6 of the exposure control unit 604 is L when the mode in which the aperture is electrically controlled, such as the shutter priority mode and the program mode, is selected, and the output is L. The aperture priority mode, the manual mode The output is H in a mode where the aperture is not electrically controlled, such as the exposure setting mode.

Therefore, in the shutter priority mode and the program mode, the output of the AND gate G28 is held at L regardless of the output state of the NAND gate G26, but in the aperture priority mode and the manual exposure setting mode, the AND gate The output of G28 is determined depending on the output state of the NA ND gate G26. Assuming that the aperture priority mode or the manual exposure setting mode is selected, when the flip-flops G26 and G27 are set and the NAND gate G26 becomes H output, the output of the AND gate G28 becomes H and the transistor Q17 becomes ON. Become. When the transistor Q17 is turned on, the speed feedback control for the clockwise and counterclockwise rotations of the motor 600 is not performed. As described above, when the shutter rear curtain is controlled and the exposure is completed, the motor 600 rotates clockwise to move the mirror downward and the film is wound. At this time, since the switch SW 9 selects the highest speed on the terminal b side, the speed feedback control is not performed, but the highest speed depending on the voltage of the power supply E _B is controlled. When the winding is completed, if the push button switch SW6 is turned on at that time, the flip-flops G7 and G8 are set again as described above, and the motor 600 is rotated counterclockwise to photograph the next frame. When the transistor Q17 is turned on, constant speed control is not performed and the vehicle turns left at the highest speed. After that, while the push button switch SW6 is continuously pressed and continuous shooting is performed, the ON state of the transistor Q17 is maintained and speed feedback is not performed, so the rotation of the motor 600 is performed at the highest speed. . When the push button switch SW6 is turned off, this continuous shooting is stopped when the film winding is completed, and the output of the NAND gate G29 becomes L, so that the flip-flops G26 and G27 are reset and the NAND gate is closed. The outputs of G26 and G28 are both L, and the transistor Q17 is OFF. When the switch SW6 is turned on again, the speed feedback control is first performed when the motor is left-turned in the one-frame shooting, but the speed feedback is not performed when the motor is rotated in the subsequent continuous shooting, and the state of rotating at the highest speed is obtained. You can In the shutter priority mode and the program mode, since the P6 output of the exposure control unit 604 is L and G28 is held at L, Q17 remains OFF. Therefore, constant speed control by speed feedback is performed every time the motor is turned left. However, when turning right, the speed is always highest.

As described above, only when the highest speed continuous shooting mode is selected in the aperture priority mode or the manual exposure mode, constant speed control is performed during left rotation at the first release of continuous shooting, and continuous shooting thereafter. The left and right turns are the fastest in the middle. The advantage of doing so is that the release timing of the first frame of continuous shooting is always constant in any mode because the camera user gives it. Since the timing of subsequent continuous shooting is determined by the camera device side, it is not necessary to control the left rotation of the motor at a constant speed, and high-speed continuous shooting is obtained by shortening unnecessary time. In the shutter priority mode and the program mode, since the diaphragm is electrically controlled when the motor is rotated counterclockwise, the counterclockwise rotation speed must be controlled to a predetermined counterclockwise rotation speed in order to ensure the accuracy of diaphragm control. Therefore, constant speed control of speed feedback is always performed when turning left. The NAND gate G29 that generates reset signals for the flip-flops G26 and G27 is controlled by the G8 output of the flip-flops G7 and G8. This is because the push button switch SW6 is turned off at any point during continuous shooting to stop shooting. When the timing is when the motor is turning to the left, shooting of that frame is completed and film winding is completed. This is because the transistor Q17 is stopped at this point, so that the operation of prohibiting the speed feedback when the motor is turned left by turning on the transistor Q17 is continued when turned left and the reset signals of the flip-flops G26 and G27 are generated at the time when the turn left is completed.

(2) -2 Normal Operation During Single-frame Shooting In this mode, the SC switch SW8 is set to the S side. The multiple shooting switching switch SW2 is ON because the normal shooting mode is selected, and the G1 output is held at L. In this mode, the re-release operation related to the ON of the pushbutton switch SW6 is not performed in synchronization with the completion of the film winding described in (2) -1, and other operations are the same as in (2) -1. Is. That is, since the SC changeover switch SW8 is on the S side (ON), the G30 output is held at H. Since the G4 output responds only to the push button switch SW6 regardless of the output of G3, the G4 output changes from L to H when the push button switch SW6 is turned on when the G5 output and the IN V1 output are H, The G6 output produces an L output for a predetermined period of time by R2 and C2 and inverts the flip-flops G7 and G8 to start the above-described release operation by the left rotation of the motor. Even when the exposure control and film winding are completed, the G4 output is kept at H while the pushbutton switch SW6 is kept ON. Only when the G4 output changes from L to H, R2, The G6 output changes to L for a predetermined period of time due to C2, but since it is held at H thereafter, the G6 output does not become L. In order to re-release, it is sufficient to charge C2 by turning off the push button switch SW6 once. If the push button switch SW6 is turned on after C2 is recharged, the output of the AND gate G5 and the inverter INV1 will be output at that time. When it is at H, that is, when the motor is not in the right-handed state, the output of the NAND gate G6 changes to L and is re-released, so that each time the pushbutton switch SW6 is turned on, one frame is taken. In this one-frame shooting mode, the output of the NAND gate G25 is held at H because the SC switch SW8 is ON, so the flip-flops G26 and G27 are in the reset state and are not inverted. Therefore, the transistor Q17 is always turned on. It is off. Therefore, even if the changeover switch SW9 selects the maximum speed mode on the terminal b side, constant speed control is performed by speed feedback for the left rotation of the motor. The reason is not only the effect on the mode in which the diaphragm is electrically controlled, but also in the mode in which the diaphragm is not electrically controlled, the release timing of one frame shooting is given by the camera user every time, and therefore, in any mode. This is because it is desirable to keep it constant. Therefore, during leftward and rightward rotation of the motor, the rotation speed of the motor 600 is controlled according to the speeds set independently of each other.

(2) -3 Operation during multiple continuous shooting In this mode, the SC switch SW8 is selected to the C side (OFF), and the multiple shooting switching lever 171 of FIG. 1 is in the multiple shooting position. The multiplex shooting switching switch SW2 is turned off, and the hoisting restriction switch SW5 is held in the OFF state at the multiplex shooting position. The changeover switch SW9 is assumed to be selected on the a side. A signal of H level is transmitted to the multiplex warning circuit OSC602 to turn off the multiplex shooting changeover switch SW2, and the OSC 602 outputs a blinking signal of the light emitting diode LED1 to warn that the multiplex shooting mode is set. The LED 1 is preferably arranged in a viewfinder as is well known. When the film winding is completed before release, the mirror lowering position switch SW1 is ON, the multiple winding stop switch SW3 is ON, the trailing curtain completion switch SW4 is ON, the winding limit switch SW5 is OFF, and the mirror stop switch. SW7 is OFF. Therefore, the output of each gate G1, G2, G3 is L. Since the outputs of the inverter INV1 and the gates G5 and G30 are H, the output of G6 becomes L for a predetermined time by turning on the pushbutton switch SW6, and the flip-flops G7 and G8 are inverted to output the left motor rotation signal. When the mirror is raised and the aperture is controlled as described above by the left rotation of the motor and the mirror is raised to a predetermined position, the mirror stop switch SW7 is turned on. As a result, the flip-flops G7 and G8 are reset, the motor is stopped and the exposure of the shutter is started, and when the rear curtain of the shutter is closed, the outputs of G2 and G1 are H due to the ON of the rear curtain travel completion switch SW4. The output becomes H, and the motor 600 rotates clockwise to lower the mirror and reset the diaphragm control mechanism. When the mirror descends to a predetermined position, the mirror lowering position switch SW1 turns ON and the G 2 output becomes L, but multiple winding stops. Since the switch SW3 is off until a predetermined phase just before the film winding starts, the output of G1 is H and the right rotation of the motor is continued. At a predetermined phase just before the film winding starts, the multi-winding stop switch SW3 is turned on, and the G1 output becomes L. The right rotation of the motor is stopped by the G1 output L, and the outputs of the inverter INV1 and the gate G30 are changed from L to H. Therefore, if the pushbutton switch SW6 is ON at that time as in (2) -1, Since the G4 output changes from L to H, the G6 output becomes L for a predetermined time by R2 and C2, the flip-flops G7 and G8 are inverted and the motor left rotation signal is output to perform the release operation again. Therefore, while the push button switch SW6 is ON, film transfer is not performed and multiple photographing is repeated. When the push button switch SW6 is OFF, the film is stopped in the phase state just before film winding, and the push button switch SW6 is turned on again. If SW6 is turned on, multiple exposure can be performed many times. At the beginning of the mirror ascending process by releasing the motor to the left, the multi-winding stop switch SW3 is turned off before the trailing curtain travel completion switch SW4 is turned off, so that the G1 output becomes H once and the motor clockwise signal is output. Is generated, but the left-handed signal of the flip-flops G7 and G8 is output before that, and the output of G9 is held at L by the inverter INV5 during that time. Therefore, the motor right-handed signal from the AND gate G1 is output after the AND gate G9. The fact that it is not transmitted to the motor control circuit and the temporary H state of the G1 output returns to L before the flip-flops G7 and G8 are reset by turning ON the mirror stop switch SW7, so the motor is rotating to the left. The temporary generation of the right-handed G1 right-handed signal at 1) does not affect the sequence of multiple imaging. To return the multiple shooting mode to the normal shooting mode, it is good to return the multiple shooting switching lever of FIG. 1 to the normal shooting position after the completion of the multiple shooting, and to return to the normal shooting as described in the explanation of FIG. When the winding-up limit switch SW5 is turned on, the G3 output becomes H and a motor right-turn signal is generated. Therefore, the film is wound up, and when the transfer of a predetermined amount of film is completed, the winding-up limit switch SW5 is turned off. The right rotation of the motor stops. It should be noted that in FIGS. 1 and 13, the shooting is temporarily stopped in the multiple shooting mode, and the multiple shooting switching lever is set to the normal shooting mode after the operation of supplying power to the circuit by Q11, Q12, R8 and C12 for a predetermined time is completed. Since the circuit power supply is stopped at the time of switching, the motor does not rotate to the right, and if the push button 100 is pressed to turn on the half-press switch SW13 to start circuit power supply, the film transfer described above is performed. In such a state, even if the user pushes the push button 100 when returning to the normal shooting by setting the multiple shooting switching lever 171 to continue shooting, the camera is not released and the shutter starts to start from the film winding sequence. There may be a problem that the expected release timing up to that time is changed, or the release is not performed when the SC switch SW8 is on the S side (ON). In order to improve this point, a mechanism for temporarily turning on the multi-shooting switching lever 171 in the process of returning the multi-shooting switching lever 171 to the normal shooting mode regardless of the operation of the push button 100 is added. Alternatively, this can be solved by separately providing a switch that is connected in parallel with the half-push switch SW13 and adding a mechanism for temporarily turning the switch ON temporarily in the process of returning the switch to the normal photographing mode. The automatic exposure control and manual exposure control, which are not described in detail, are performed in the same manner as described in (2) -1. In the above operation, the constant speed control set by the speed feedback is separately performed for each of the right rotation and the left rotation of the motor as in the operation when the SW9 of (2) -1 is on the a terminal side.

The operation when the switch SW9 is on the b terminal side is the same as the operation when the switch SW9 in (2) -1 is on the b terminal side, and the switch SW6 is turned on in the aperture priority mode and the manual exposure setting mode. During the first exposure, the left turn of the motor is controlled at a constant speed in order to keep the release timing constant, and the right turn after that is the highest speed because there is no speed feedback. Left turn and right turn are all controlled at the highest speed without speed feedback. In shutter priority mode and program mode, constant speed control is always performed when turning left.

(2) -4 Operation during Multiplex Single Frame Shooting This mode is obtained by turning the SC switch SW8 to the S side (ON) in the state of (2) -3. In this mode, the output of the NAND gate G30 remains held at H, and therefore the release operation is the same as in (2) -2, when the output of the inverter INV 1 and the AND gate G5 is at H, the pushbutton switch SW6 is turned on. The flip-flops G7 and G8 are reversed by this and the release of the camera by the left rotation of the motor is started. Even if the push button switch SW6 is kept ON, the exposure of the camera is completed and the mirror descends and the film is about to be transferred. Stop automatically in the state of. To release again, if the push button switch SW6 is turned off and then turned on, multiple shooting is performed. To return from the multiple shooting to the normal shooting, it is sufficient to return the multiple shooting switching lever 171 of FIG. 1 to the normal shooting position as described in (2) -3. For the same reason as (2) -2 in this multiple-frame shooting, the left rotation of the motor is always controlled at a constant speed regardless of the selection state of the switch SW9 and the selection state of the exposure mode such as the shutter priority mode and the aperture priority mode. Right turn is controlled at an arbitrarily selected speed.

(3) Film End Operation The film end operation is performed during the film transfer sequence in the normal shooting mode. That is, since the film cannot be pulled out from the cartridge at the end of the film during the film transfer, a predetermined amount of the film cannot be transferred and therefore the winding limiting switch SW5 remains off, so that the variable resistor VR3, the capacitor C6, and the comparator A2. After a predetermined elapsed time corresponding to the hoisting time selected by, the A2 output becomes L, the outputs of the AND gates G13 and G14 are held at L to stop the motor, and the inverter INV10 becomes H and the output of the OR gate G18 is output. Becomes H, the light-emitting diode LED2 for warning display lights up, and a warning is displayed that the motor has automatically stopped.

(4) Film Rewinding Operation This operates according to the following procedure as described in FIG. Rewinding is started by first pressing the rewinding button 7 and then setting the rewinding lever 155 to the rewinding position. When the rewind button 7 is pressed, the rewind button switch SW15 is turned off, and when the rewind lever is set to the rewind position, the film end switch SW16 is turned off if there is a film. The output goes high. The G17 output is L because the inverter INV12 is L output, the rewind warning circuit 603 does not operate, and the output to the OR gate G18 is L. The output of G24 is L because SW14 is ON. The G23 output is L because the inverter INV14 is L because the film end switch SW16 is OFF. G ₁₆ G when the output becomes H₁₅The output also goes to H, and the motor starts clockwise rotation to rewind the film. Further, since the output of G16 is H, the output of the NOR gate G32 is held at L, and the output of G5 is also held at L, so the flip-flops G7 and G8 are held in the reset state. Is never output.

The inverter INV11 rewinds the film immediately when the film rewind is mistakenly set when the mirror lowering position switch SW1 is OFF, that is, while the mirror is moving up and the exposure is being performed. Instead, it generates a signal to give a prohibition signal to start film rewinding by rotating the motor right after exposure is completed and the mirror descends. The L output at the time of rewinding of the NOR gate G32 holds the G9 output at L, so that the film rewinding is started and at the same time, Q16 is held ON and the operation of the timer circuit by VR3, C6 and A2 is the rotation of the motor. It has been stopped even if. Further, while the rewind switch SW14 is turned on, Q11 is turned on via D11 to keep the power supply to the circuit.

When the rewinding of the film is completed, the film end switch SW16 is turned on, so that the output of G16 becomes L, while the output of G31 becomes H, the output of G32 remains L, so that the output of G9 is L, and the flip-flops G7 and G8. Since the reset state is held, the motor is stopped, the output of G23 becomes H, LED2 lights up and the rewinding is completed. When the rewind lever is set to rewind without pressing the rewind button, the G16 output is L and the G17 output is H, so the rewind warning circuit 603 operates and LED2 blinks to rewind. Warn that it is impossible.

When the film is rewound, it is not necessary to turn on the full-press switch SW6, so it is normally turned off. Therefore, the flip-flops G26 and G27 are in the reset state, and the transistor Q17 is turned off. ing. Even when the switch SW6 is still ON and the flip-flops G26 and G28 are set, the G32 output is L at the time of rewinding, so the G28 output is also L and the transistor Q17 is OFF. . Therefore, the motor speed at the time of rewinding is a speed arbitrarily selected by the speed switching operation lever.

In the embodiment of the present invention shown in FIG. 12, the speed feedback control is performed by the speed detection by the DC speed generator for the constant speed control of the motor, but the present invention is not limited thereto. For example, it is obvious that the speed feedback can be controlled by a known detecting means for detecting the rotation speed of the motor in a pulse manner by a photoelectric element, a magnetic sensor, a mechanical contact or the like. In the embodiment of the present invention, the constant speed control is performed in an analog manner, but such a method is related to the power transistors Q1 and Q2 for controlling the motor current in relation to the voltage of the power source E _B. Since a large thermal load is required for Q4 and Q7, it is necessary to use a high-power transistor with good heat dissipation, which is a problem when making the camera compact. To solve this problem, if Q1, Q2, Q4, and Q7 are pulsed on and off and the duty ratio of ON and OFF is controlled in a pulse-width modulation manner, thermal generation will be minimized. It is preferable because a small transistor can be used.

FIG. 13 shows an embodiment of the aperture speed correction circuit of the exposure control unit 604 of FIG. In FIG. 13, the same symbols are attached to the portions shown in FIG. The logarithmic compression circuit 610 converts the photometric current from the photodiode PD into a logarithmically compressed voltage. The memory circuit 611 is a circuit for storing the photometric value by the logarithmic compression circuit 610 when the H output of the OR gate G11 is transmitted through the P1 terminal. The arithmetic circuit 612 is selected by the mode selector circuit 617 by using each output of the memory circuit 611 and the film sensitivity setting circuit 613, the lens preset ring aperture value and the lens open aperture value detection circuit, and the shutter time setting circuit 615 as arithmetic inputs. The calculation processing is performed according to the mode, and the display output of the exposure setting value is output to the display circuit 616, the output of the shutter timer circuit 618 for designating the control shutter time, and the aperture value designating output for the aperture control are output. The mode selector circuit 617 outputs an H level signal to the P6 terminal when the aperture priority mode or the manual exposure setting mode is selected, and outputs an L level signal when the program mode or the shutter priority mode is selected. Reference numeral 619 denotes an aperture speed correction circuit, which is a common-mode widening circuit composed of A10, R10, and R11 that widens the generated voltage of the speed generator transmitted through the P7 terminal, and control transmitted from the arithmetic circuit 612. The differential amplification circuit is composed of A11, R12, R13, R14, and R15 which receives the aperture value voltage and the A10 output voltage. The control aperture value voltage output from the arithmetic circuit 612 has such a relationship that the output voltage increases as the control target aperture value becomes the small aperture value. E _S is a reference voltage, VR ₁ is a variable resistance related to the movement of the aperture control lever described above, and I _S is a constant current suction source. Since the variable resistor VR1 has a relationship of decreasing its resistance value as the aperture value becomes smaller, the voltage generated at the connection point between the variable resistor VR1 and the constant current suction source I _S also becomes smaller as the aperture value becomes smaller. To rise. A12 is a comparator, and when the voltage by the variable resistor VR1 is equal to or higher than the output of the aperture speed correction circuit 619, the output becomes H and the aperture lock signal is output via the P2 terminal. The output of the diaphragm speed correction circuit 619 becomes lower than the output of the calculation circuit 612 as the motor speed increases. That is, the voltage is corrected to the open diameter side of the control target aperture value of the arithmetic circuit 612 according to the motor speed. Since the variable resistance VR1 changes from the aperture open side to the smaller aperture side, the aperture lock signal of the comparator A12 is output earlier than VR1 reaches the control target aperture value output by the arithmetic circuit 612 as the motor speed increases. Will be done. As the motor speed increases, the throttle stop signal is output earlier, which compensates for the above-mentioned stop delay of the stop stop mechanism, so that accurate stop control is performed.

[0114]

[Effect of device]

 The motor drive camera capable of multiple-exposure shooting of the present invention stabilizes the film feed amount by one frame because the motor is stopped by the feeding end detection of the feeding end detection means. It does not cause unnecessary feeding, and the intervals between frames do not vary. In the second setting state (multi-exposure shooting), only the shooting preparation means is operated, and when the preparation operation end detection means detects the end of shooting preparation, the control means completely stops the motor, so that the sequential operations are performed. There is no chance of accidentally moving the film slightly due to the overrun that is likely to occur in the system.

[Submission date] May 21, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

Next, the worm 58 will be described as a system (hereinafter, abbreviated as “throttle drive system”) that is interlocked with the meshing of the seventh gear 59. Along with the rotation of the seventh gear 59 in the direction of the arrow in FIG. 1 (right rotation) due to the left rotation of the motor 600. The shaft 69, the eighth gear 70, and the squeezing cam 71, to which this is fixed, all start to rotate in the same direction as a unit. However, since the right rotation of the rotary disc 61 in the film feeding system is restricted by the mirror-raising locking claws 62, the rotation of the motor shaft 31 is restricted via the gear train, and the shaft 69 also has a predetermined rotation. Only the rotation angle can be turned to the right. When the shaft 69 starts rotating rightward from the state shown in FIG. 1, the tip 71a of the squeezing cam 71 pushes the one end 102a of the holding release lever 102, but the lever 102 moves the shaft 73 of the shaft 73 embedded in the squeeze holding lever 75. It cannot rotate (counterclockwise). This is because the arm portion 102b of the lever 102 is in contact with the pin 74 planted in the diaphragm holding lever 75. Therefore, the lever 102 turns left about the shaft 77 against the biasing force of the spring 76 together with the diaphragm holding lever 75.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a drive mechanism portion of an embodiment of a camera of the present invention.

FIG. 2 is a schematic perspective view showing the sprocket mechanism portion of FIG. 1 taken out.

FIG. 3 is a schematic perspective view showing the mirror mechanism portion of FIG. 1 taken out.

FIG. 4 is a schematic perspective view showing a mirror raised state.

FIG. 5 is a schematic perspective view of a modified example of the multiple exposure mechanism.

FIG. 6 is a chart showing the relationship between the operation of the above embodiment and the switches and the like that control it.

FIG. 7 is a schematic side view of the camera of the embodiment.

FIG. 8 is a plan view of a part of FIG.

FIG. 9 is a schematic view showing an example of a battery pack used in the above embodiment.

FIG. 10 is a schematic diagram showing an example of a high-power battery pack as shown in FIG.

FIG. 11 is a schematic view of a switch that switches according to the battery pack shown in FIGS. 9 and 10.

FIG. 12 is a circuit diagram of the above embodiment.

13 is a detailed circuit diagram of the exposure control unit of FIG.

[Explanation of symbols]

 Motor 600 Exposure control unit 604 Multiple shooting selector switch SW2

Claims (1)

[Scope of utility model registration request] 1. A shooting preparation means for performing a shooting preparation operation, a preparation operation end detection means for detecting the end of the shooting preparation operation, a film feeding means for feeding a film, and a feeding operation for detecting the end of feeding of each frame. Completion detecting means, operating means for sequentially operating the photographing preparation means and the film feeding means, a motor for driving the operating means, and setting means capable of taking a first setting state and a second setting state. When the setting means is in the first setting state, the motor allows the operation means to operate the photographing preparation means and the film feeding means, and feeds the film at each exposure, The motor is stopped by the feeding end detection of the feeding end detection means, and the photographing preparation means is operated by the motor when the setting means is in the second setting state to prepare for the preparation operation end detection means. The motor is stopped upon detection of the end of the work, the actuating means is prohibited from actuating the film feeding means to enable multiple exposure, and the setting means is changed from the second setting state to the first setting state. And a control means for stopping the motor when the feeding end detection means detects the feeding end when the operating means operates the film feeding means by the motor to feed the film. A motor drive camera capable of multiple exposure shooting.