JPH05150344A - Film cartridge storage device - Google Patents

Abstract

(57) [Abstract] [Purpose] When the film of the film cartridge loaded in the camera body is ejected from the cartridge, the lid member is not opened even if the eject operation is performed. [Structure] When the film FL is pulled out from the film cartridge 2 inserted in the cartridge chamber 3 of the camera body 1, the film FL is locked to the guide portion 20 to prevent the eject member 12 and the film cartridge 2 from being ejected. , Even if the operating member 6 is operated in the opening direction,
The lid member 4 is locked and held while the locking claw 17a of the lock release lever 17 remains locked by the lock claw 4b. Also,
When the film FL is not ejected from the film cartridge 2, the eject member 12 and the film cartridge 2 are allowed to eject, and the lock release lever 17 is interlocked with the movement of the eject member 12 in the eject direction.
The lid member 4 is opened by rotating the locking claw 17a in a direction in which the locking claw 17a is disengaged from the lock claw 4b of the lid member 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film cartridge ejecting device.

[0002]

2. Description of the Related Art In recent cameras, instead of a roll film with a cartridge in which the film lead portion is largely pulled out of the cartridge like 135 film, the film is completely accommodated in a cartridge and the film winding shaft is rotated. A film cartridge having a structure capable of feeding a film by doing so has been used. This type of film cartridge can be easily loaded by pushing it into the cartridge chamber of the camera body from the side or bottom of the camera body in a predetermined direction and posture. On the other hand, since the film cartridge inserted into the cartridge chamber is buried in the cartridge chamber, it cannot be easily picked out with a fingertip or the like. Therefore, in a camera using a film cartridge, as is clear from Japanese Patent Laid-Open No. 2-248940, an eject mechanism is incorporated in the camera body, and the eject mechanism is operated to move the film cartridge from the cartridge chamber by a predetermined amount. It is projected, which facilitates the removal of the film cartridge.

[0003]

However, in such a conventional film cartridge take-out device, the lid member is irrelevant regardless of the presence or absence of the film cartridge and the storage condition of the film (whether the film is ejected from the cartridge or not). It can be opened and closed. In other words, the lid can be opened even when the film in the film cartridge loaded in the camera body has been sent to the winding side through the aperture, so if you accidentally open the lid, the film will be exposed. There was a problem that it would be done.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a film cartridge unloading device in which the lid member cannot be opened when the film of the film cartridge loaded in the camera body is coming out of the cartridge.

[0005]

The present invention will be described with reference to FIGS. 1, 2 and 5. The invention according to claim 1 is a cartridge chamber formed in a camera body 1 and into which a film cartridge 2 is inserted. 3, a lid member 4 for opening and closing the film cartridge insertion opening 3a of the cartridge chamber 3, and an ejecting means 12 for ejecting the film cartridge 2 inserted into the cartridge chamber 3 from the insertion opening 3a. Applied. The object is to prevent the film cartridge 2 from moving in the eject direction when the film FL is ejected from the film cartridge 2 and to move the film cartridge 2 in the eject direction when the film FL is not ejected. This can be achieved by providing an eject control unit (corresponding to the film guide unit 20 in FIG. 5) that permits the movement of the.

The invention of claim 2 will be described with reference to FIG. 1 and FIG. 2. In the invention of claim 2, locking means for locking the lid member 4 in the closed state (the locking claws 4b, locking in FIG. 1). Nail 1
7b) and a lock releasing means 17 for releasing the lock of the locking means and opening the lid in conjunction with the movement for ejecting the film cartridge 2 when the movement of the film cartridge 2 in the eject direction is permitted. By doing so, the above object can be achieved.

[0007]

When the film FL is pulled out from the film cartridge 2, the eject control means prohibits the operation of the lock releasing means 17 and locks the lid member 4 in the closed state. Thereby, a member for opening the lid member (operation member 6 in FIG. 1)
Even if the opening operation is performed, the lid member does not open, and film exposure can be prevented.

Incidentally, in the section of means and action for solving the above-mentioned problems for explaining the constitution of the present invention, the drawings of the embodiments are used to make the present invention easy to understand. It is not limited to.

[0009]

【Example】

-First Embodiment- A first embodiment of the present invention will be described with reference to Figs. FIG. 2 is a schematic perspective view of the camera as seen from the bottom side, in which 1 is a camera body, and a cartridge chamber 3 into which a film cartridge chamber 2 is inserted is formed in the camera body 1. The cartridge chamber 3 has an insertion opening 3a through which the cartridge film 2 can be taken in and out, on the bottom surface (upper surface in FIG. 2) of the camera body, and the insertion opening 3a is opened and closed by the lid member 4. Reference numeral 6 denotes an operation member that locks the lid member 4 in the closed state and unlocks the lid member. The operation member 6 is provided on the camera body 1 so as to be slidable in the lateral direction (the arrow direction in FIG. 2). ing. 7 is a taking lens.

In FIGS. 1 and 3 to 8, the lid member 4 is used.
Is rotatably pivotally attached to the bottom of the camera body by a shaft pin 8 and is biased in the opening direction by a torsion spring 9 attached to the pivotal support. In addition, the lid member 4 has a holding spring 10 for pushing the film cartridge 2 inserted in the cartridge chamber 3 in the insertion direction inside the lid member 4, and the lid member 4 is engaged with and disengaged from the operating member 6 on the swing end side. The first locking claw 4a and the second locking claw 4b that locks the lid member 4 so as not to open when the film FL is pulled out from the film cartridge 2 are provided in a protruding manner.

The operating member 6 is formed by a spring member (not shown) in FIG.
Is urged in the direction of the arrow, and is engaged with the first locking claw 4a of the lid member 4, and the knob portion 6b protruding from the lateral long hole formed in the side wall of the camera body 1. , And a projection 6c for turning on / off the state detection switch 11 of the operation member 6.

Reference numeral 12 is an eject member provided in the camera body 1 so as to be movable along the longitudinal direction of the cartridge chamber 2 (vertical direction in FIG. 1).
2 has a cartridge receiving portion 12a that crosses the cartridge chamber 3 in the left-right direction of the camera body 1, and a supporting portion 12b formed at one end of the receiving portion 12a at a right angle. Support part 12
b is engaged with a guide groove (not shown) formed in the camera body 1, and a rack 13 for moving the eject member 12 along the longitudinal direction of the cartridge chamber is formed on the back surface thereof. A pinion gear 14 supported by the camera body 1 is meshed. Pinion gear 14
Is rotated by a cartridge removal motor (not shown) via a friction rotation transmission mechanism (not shown).
15 is a film cartridge pushing direction (insertion port 3a
Direction detection switch that limits the amount of movement in
The detection switch 15 is mounted inside the camera body 1 so as to face the tip of the support portion 12b of the eject member 12.

The lock release lever 17 is used to release the lock of the lid member 4 with respect to the second lock claw 4b in association with the movement of the eject member 12 in the eject direction (upward in FIG. 1). , Is arranged in the longitudinal direction of the cartridge chamber 3 so as to face the tips of the second lock claw 4b and the receiving portion 12a of the eject member 12. One end of the lock release lever 17 has a receiving portion 12 of the eject member 12.
On the a side, the receiving portion 1 is attached to the camera body 1 by the shaft pin 18.
2a is rotatably supported in the direction of separating from and contacting with 2a, and at the other end,
A locking claw 17a is formed which engages and disengages with the second lock claw 4b. Further, on the side surface of the lock release lever 17 facing the tip of the receiving portion 12a, an inclined step portion 17b with which the tip of the receiving portion 12a engages as the eject member 12 moves in the eject direction is formed. Depending on the combination, the lock release lever 17 is in the lock release direction (counterclockwise direction in FIG. 1).
Is rotated to. Further, the lock release lever 17 has a locking portion 17a by means of a torsion spring 19 attached to its shaft support portion.
Is urged in a direction in which it engages with the second lock claw 4b.

5 to 8, reference numeral 20 denotes a film guide portion provided on the camera body 1 so as to face the film outlet 2a of the film cartridge 2, and the film guide portion 20 is provided with the film outlet 2a. One side edge of the pulled-out film FL contacts. When the film FL is in contact with the film guide portion 20, this serves as a stopper to prevent the eject member 12 from being ejected.

FIG. 9 is a control block diagram of the cartridge eject mechanism. In FIG. 9, reference numeral 30 is a control circuit which is composed of a microcomputer and also has a general control function of the camera. The control circuit 30 includes a state detection switch 11 for the operation member 6 and a position detection switch for the eject member 12. 15 and a cartridge ejecting motor 31 are connected to each other.

Next, the operation of the first embodiment constructed as described above will be explained. 1, FIG. 4 and FIG.
The film cartridge 2 is loaded in the cartridge chamber 3, the film FL is pulled out from the film cartridge 2, and the lid member 4 is closed. In this case, the eject member 12 is at the loading end position where the film cartridge 2 is completely inserted into the cartridge chamber 3, and the tip of the cartridge receiving portion 12a is closer to the shaft pin 18 than the inclined step portion 17b. The locking claw 17a of is locked to the second locking claw 4b of the lid member 4. Further, the locking claw 6 a of the operation member 6 is locked to the first lock claw 4 a of the lid member 4. Then, the cartridge pressing spring 10 of the lid member 4 in the closed state presses the film cartridge 2 toward the receiving portion 12a, and holds the film cartridge 2 in the cartridge chamber 3 while sandwiching it from both ends. Further, one side edge of the film FL pulled out from the film delivery port 2 a of the film cartridge 2 is in contact with the film guide portion 20.

When the operating member 6 is erroneously moved in the direction of arrow A in FIG. 4 during use of the film from which the film FL has been pulled out in this way, the locking claw 6a is moved to the first locking claw of the lid member 4. 4a, the movable contact piece 11a of the state detection switch 11 is pressed by the protrusion 6c to connect with the fixed contact piece 11b to turn on the state detection switch 11. At this time, since the second lock claw 4b is locked to the lock claw 17a of the lock release lever 17, the lid member 4 cannot be opened.

On the other hand, when the ON signal is input to the control circuit 30 shown in FIG. 9 by turning on the state detection switch 11, the control circuit 30 gives a command to the motor 31 for taking out the cartridge, and the motor 31 is driven. To start. When the motor 31 is started, its rotation is transmitted to the pinion gear 14 via a friction rotation transmission mechanism (not shown), and the pinion gear 14 and the rack 13 lift up the eject member 12 in the direction of arrow B in FIG.
As a result, when the film cartridge 2 starts to be ejected in the same direction as the arrow B, one side edge of the film FL pulled out from the film cartridge 2 abuts on the film guide portion 20 to prevent further ejection. Therefore, the friction rotation transmission mechanism (not shown) that connects the pinion gear 14 and the motor 31 slips,
The eject member 12 is held at the loading end position shown in FIG. Accordingly, the locking claw 17 of the lock release lever 17
a remains locked to the second lock claw 4b of the lid member 4. As a result, when the operating member 6 is operated in the opening direction, the lid member 4 is not opened even if the locking claw 6a is disengaged from the first lock claw 4a, and is pulled out from the film cartridge 2. The film FL is never exposed.

Next, the state in which the film FL is not pulled out from the film cartridge 2, that is, the film F
A case will be described in which the film cartridge 2 is taken out in a state in which L is completely wound in the cartridge and stored. 6 and 7 show a state in which the operating member 6 is slid in the opening direction in a state where the film is not pulled out from the cartridge.

When the operating member 6 is slid in the opening direction,
The locking claw 6a is disengaged from the first lock claw 4a of the lid member 4, and the state detection switch 11 is turned on. When this ON signal is input to the control circuit 30, the control circuit 30
In response to a start command that is output from, the cartridge take-out motor 31 is started to rotate the pinion gear 14. At this time, since the film FL is completely stored in the cartridge 2 and is not locked by the film guide portion 20, the movement of the film cartridge 2 in the eject direction is permitted. Therefore,
When the pinion gear 14 rotates, the rack 1 that meshes with it
3 causes the eject member 12 to move in the direction of arrow B in FIG.
Begins to be ejected against. Then, as the eject member 12 moves in the direction of the arrow B, the tip of the cartridge receiving portion 12a of the ejecting member 12 has the inclined step portion 1 of the lock release lever 17.
When it comes to the stage of passing through the inclined step portion 17b while slidingly contacting with 7b, the lock release lever 17 is rotated in the direction of arrow C in FIG. The locking claw 17a of is removed from the second lock claw 4b of the lid member 4.

When the locking claw 17a is disengaged from the second locking claw 4b, the first locking claw 4a is unlocked by the sliding operation of the operating member 6 in the opening direction. With the shaft pin 8 as the fulcrum, the arrow D in FIG.
It rotates in the direction and is opened as shown in FIG. After that, if the state detection switch 11 is continuously turned on by the protrusion 6c of the operation member 6, the cartridge ejecting motor 31 also continues to rotate, so that the eject member 12 is further moved in the arrow B direction. Then, the supporting portion 1 of the eject member 12
When the tip of 2b presses the movable contact piece 15a of the position detection switch 15 to bring it into contact with the fixed contact piece 15a, the position detection switch 15 is turned on. When this ON signal is input to the control circuit 30, the control circuit 30 stops the cartridge ejection motor 31. At this time, the eject member 12
7 is at the pop-up end position as shown in FIG. 7, the film cartridge 2 is projected outward from the insertion opening 3a of the cartridge chamber 3 as shown in FIG. 7, and is easily taken out.

FIG. 8 shows a state in which the lid member 4 is closed without inserting the film cartridge 2 into the cartridge chamber 3. When the film cartridge 2 is inserted from this state, first, the operation member 6 is slid in the opening direction to release the engagement with the first lock claw 4a and open the lid member 4. At this time, since the support portion 12b of the eject member 12 turns on the position detection switch 15, even if the state detection switch 11 is turned on by the protrusion 6c of the operation member 6, the cartridge ejection motor 31 may be activated. Absent.

Next, the film cartridge 2 with the film FL completely stored therein is inserted into the cartridge chamber 3 through the insertion opening 3a, and the film cartridge 2 inserts the eject member 12 while pushing it downward in FIG. At this time, the pinion gear 14 rotates in conjunction with the downward movement of the rack 13. In addition, the eject member 1
When the cartridge 2 is moved downward, the tip of the cartridge receiving portion 12a is moved to the inclined step portion 17b of the lock release lever 17.
When it reaches the insertion end after passing through, the lock release lever 17 returns to the lid member locking position by the torsion spring 19, and at the same time, the film cartridge 2 is completely inserted into the cartridge chamber 3. When the lid member 4 is closed in accordance with the insertion of the film cartridge 2, the first locking claw 4a of the lid member 4 is locked by the locking claw 4a of the operation member 6, and the second locking claw 4b is unlocked. The lid member 4 is locked in the closed state by being locked by the locking claw 17a of the lever 17.

In the first embodiment, the film FL is pulled out from the film cartridge 2 inserted in the cartridge chamber 3 when the film FL is pulled out.
Engages with the film guide portion 20 to prevent movement of the film cartridge 2 in the eject direction. Therefore, by sliding the operating member 6 in the opening direction, the state detection switch 11 is turned on and the cartridge removing motor 3
Even if 1 is activated, the eject member 12 is not operated, and the lock release lever 17 interlocked with this also holds the lid member 4 in the closed position. Therefore, even if the operation member 6 is inadvertently slid in the opening direction, the lid member 4 does not open, and it is possible to prevent the film FL drawn from the film cartridge 2 from being exposed.

Second Embodiment FIGS. 10 to 12 show a second embodiment of the present invention. 10 to 12, parts that are the same as or correspond to those in FIGS. 1 to 8 are given the same reference numerals, and descriptions thereof will be omitted.
~ The part different from Fig. 8 will be mainly described. The second embodiment is different from the first embodiment in that the operating member 6, the cartridge ejecting motor 31 and the components related thereto shown in the first embodiment are removed, and a manual pure mechanical configuration is adopted. Only by doing so, it is possible to control the taking out of the film cartridge equivalent to that in the first embodiment.

Therefore, in the second embodiment, the operation member 41 for ejecting can be slid in the ejecting direction of the film cartridge 2 (vertical direction in FIG. 10) by moving it toward the cartridge insertion port 3a side from the ejecting member 12. The operation member 41 and the eject member 12 are connected to each other by a spring member 42.
Another spring member 43, which generates a pulling force opposite to the pulling direction of the spring member 42, is stretched between the camera body 2 and the camera body 1. The spring force of the other spring member 43 is set to be weaker than the spring force of the spring member 42, and when the film cartridge 2 is not inserted, the operating force applied to the operating member 41 in the eject direction is excluded. 1 and the operation member 41 and the eject member 12 by the other spring member 43.
Pulled down below zero.

Next, the operation will be described. FIG. 10 shows a state in which the film cartridge 2 is held at the loading position and the film FL is pulled out from the film cartridge 2 by the holding spring 10 of the lid member 4 which is locked in the closed state. In this state, it is assumed that the ejecting operation member 41 is manually slid in the direction of arrow E in FIG. In this case, the eject member 12 connected via the spring member 42 and the film cartridge 2 held by the eject member 12 try to move in the same direction, but one side edge of the film FL comes into contact with the film guide portion 20, The ejection of the film cartridge 2 in the eject direction (arrow E direction) is prevented. As a result, the lock release lever 17 holds the position shown in FIG.
Is locked in the closed state, the lid member 4 cannot be opened.

FIG. 12 shows a state in which the operating member 41 is slid in the direction of arrow E while the film FL is not pulled out from the film cartridge 2.
In this case, the movement of the film cartridge 2 in the eject direction is not blocked by the film guide portion 20, so that when the operating member 41 is slid in the direction of arrow E, the eject member connected via the spring member 42 is ejected. The member 12 is moved in the arrow E direction together with the film cartridge 2. When the tip end of the cartridge receiving portion 12a moves in the direction of arrow E while slidingly contacting the inclined step portion 17b of the lock release lever 17, the lock release lever 17 resists the torsion spring 19 and the pivot pin 18 serves as a fulcrum. It is rotated in the direction of arrow C, and the locking claw 17a at the swinging tip thereof is disengaged from the lock claw 4b of the lid member 4. Along with this, the lid member 4
Is automatically opened by the torsion spring 9. afterwards,
By sliding the operating member 41 further in the direction of arrow E, the film cartridge 2 is projected outward from the cartridge chamber 3. This facilitates the removal of the film cartridge 2.

In such a second embodiment, the first
In addition to the same effect as in the first embodiment, the take-out mechanism can be simplified and the cost can be reduced as compared with the first embodiment.

-Third Embodiment- A third embodiment of the present invention will be described with reference to FIGS. 13 and 14. In the third embodiment, the first and second
The present embodiment is different from the above embodiment in that the presence or absence of the completion of rewinding of the film is determined to prevent or permit the ejection of the film cartridge. The mechanical structure is the same as that of the first embodiment.

In FIG. 13, a control circuit 30 for overall control of the camera includes a state detection switch 11 for the operating member 6, a position detection switch 15 for the eject member 12, and a cartridge ejecting motor 31 as in the case shown in FIG. Are respectively connected, and the memory 32 is further connected. The memory 32 stores a program for controlling the camera, a rewinding state of the film FL, other film information, and the like.

Next, the operation of the third embodiment will be described with reference to the flow chart shown in FIG. 14 and FIG.
When the operation member 6 is slid in the opening direction and the state detection switch 11 is turned on, the ON signal is taken into the control circuit 30 so that the film FL is completely rewound into the film cartridge 2 in step S1. Determine whether or not. In this case, the rewinding completion data is retrieved from the film state storage area. When it is determined in step S1 that the rewinding of the film FL is completed, the cartridge unloading motor 31 is activated in the next step S2. Then, when it is determined in the next step S3 that the position detection switch 15 is turned on, the process proceeds to step S4 and the motor 31 is stopped. As a result, similarly to the first embodiment, the lid member 4 is opened, and the film cartridge 2 is projected outward from the cartridge chamber 3 by the eject member 12.

On the other hand, in step S1, the film F
When it is determined that the rewinding of L has not been completed, the process proceeds to step S5, and a warning (not shown) provided on the camera body is used to warn that the film FL is pulled out from the film cartridge 2. And display it. Then, the process proceeds to step S6, and it is determined whether or not a switch (not shown) for rewinding the film is turned on again at a predetermined time. When it is determined that the rewinding switch is turned on, the film rewinding mechanism (not shown) operates to rewind the film FL. Then, the process proceeds to step S2. If it is determined in step S6 that the rewinding switch is not turned on, the process returns to the main processing routine of the camera.

In the third embodiment, the film rewinding completion state is determined so that the cartridge is ejected. Therefore, as compared with the first and second embodiments, the film FL has an extra portion. You don't have to burden yourself,
The same effect as the first embodiment can be obtained.

The present invention is not limited to the configuration shown in each of the above-described embodiments, but can be variously modified without departing from the scope of the claims.

In the above embodiment, the eject member 1
2, rack 13, pinion gear 14 or operating member 41
Is the ejecting means including the lock claw 4b and the locking claw 17a.
And the film guide portion 20 or the means for determining the rewinding of the film constitutes eject control means for permitting or blocking the movement of the film cartridge in the eject direction.

[0037]

According to the present invention, when the film is ejected from the film cartridge, the movement of the film cartridge in the eject direction is blocked, and when the film is not ejected, the film cartridge is ejected. Since the lid member is opened only after allowing the movement in the direction, when the film cartridge is loaded in the camera with the film pulled out, the lid member can be opened even if the eject operation is performed carelessly. Therefore, there is an effect that the exposure of the film can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of a film cartridge removal mechanism showing a first embodiment of the present invention.

FIG. 2 is a schematic perspective view of a camera equipped with the film cartridge ejecting device of this embodiment.

FIG. 3 is a plan view of the cartridge lid portion shown with the lid member removed in the first embodiment.

FIG. 4 is a view of the film cartridge take-out mechanism according to the first embodiment as viewed from the side of the camera body.

FIG. 5 is a view of the film cartridge take-out device according to the first embodiment as viewed from the rear surface of the camera body.

FIG. 6 is a diagram showing the middle of the ejecting operation of the film cartridge ejecting device in the first embodiment.

FIG. 7 is a diagram showing an eject end state of the film cartridge ejecting device in the first embodiment.

FIG. 8 is a diagram showing a state in which the lid member is closed without inserting the film cartridge.

FIG. 9 is a control block diagram in the first embodiment.

FIG. 10 is a view of the film cartridge ejecting device according to the second embodiment of the present invention, as viewed from the rear surface of the camera body.

FIG. 11 is a view of the film cartridge ejecting device according to the second embodiment as seen from the side of the camera body.

FIG. 12 is a diagram showing the middle of the eject operation of the film cartridge ejecting device in the second embodiment.

FIG. 13 is a control block diagram showing a third embodiment of the present invention.

FIG. 14 is a flowchart showing an operation procedure in the third embodiment.

[Explanation of symbols]

 1 Camera Main Body 2 Film Cartridge 3 Cartridge Chamber 4 Lid Member 4a, 4b Lock Claw 6 Operating Member 12 Ejecting Member 13 Rack 14 Pinion Gear 17 Lock Release Lever 17a Locking Claw 31 Motor 41 Ejecting Operating Member

Claims (2)

[Claims] 1. A cartridge chamber formed in a camera body into which a film cartridge is inserted, a lid member for opening and closing a film cartridge insertion port of the cartridge chamber, and a film cartridge inserted in the cartridge chamber from the insertion port. In a film cartridge take-out device provided with ejecting means for projecting, when the film is in the state of being ejected from the film cartridge, the movement in the eject direction of the film cartridge is blocked, and the film is not in the state of being ejected. A film cartridge ejecting device, further comprising: eject control means for permitting movement of the film cartridge in the eject direction. 2. A locking means for locking the lid member in a closed state according to claim 1, and an interlocking movement with the ejecting movement of the film cartridge when the movement of the film cartridge in the ejecting direction is permitted. A film cartridge take-out device comprising lock releasing means for releasing the lock of the locking means and opening the lid.