JPH05788B2 - - Google Patents

Description

Detailed Description of the Invention (Technical Field) The present invention relates to a front-loading type record carrier storage container loading device in which a record carrier storage container storing a record carrier is inserted into or taken out from the front of a recording or reproducing apparatus main body. It is related to.

(Background Art) In a recording or reproducing apparatus that records or reproduces information on a disc-shaped record carrier such as a magnetic sheet while forming recording tracks concentrically or spirally, the disc-shaped record carrier is housed. A type in which the cassette is inserted from the front of the recording or reproducing apparatus when loading the cassette into a cassette holder provided within the main body of the recording or reproducing apparatus is known as a front loading system.

According to this front loading method, the cassette is inserted into a cassette holder, and the cassette is fixed by a clamping member provided on the cassette holder. A conventionally proposed device of this type will be described with reference to FIG. 1. Reference numeral 2 represents a cassette for storing a magnetic sheet (not shown), and 7 represents a jacket holder into which the cassette holder 2 is inserted. 67 and 70 are pins planted on the side of the cassette holder 7.

A slide plate 66 is provided with cam grooves 67 and 68 in the shape of a square, and pins 69 and 70 are slidably fitted into the cam grooves 68 and 67.

73 is a loading motor, 59 is a worm gear, 60 is a worm wheel, and 61 is a gear coaxially connected to the worm wheel 60, which is shown by a dotted line. Gears 62 and 63 mesh with the gear 61, and arms 64 and 65 having long grooves 71 and 72 extending in the vertical direction are provided on the rotating shafts of the gears 62 and 63. These long grooves 71 and 7
2, pins 70 and 69 are slidably fitted through cam grooves 67 and 68.

When loading cassette 2, insert cassette 2 into cassette holder 7 and turn loading motor 7.
3 is rotated, the rotational torque is transmitted through the worm gear 59 to the worm wheel 60 and the gear 6.
1 and rotate them counterclockwise. Gears 62 and 63 meshing with gear 61 are rotated clockwise, and arms 64 and 65 are engaged with gear 6.
It is rotated clockwise around rotation axes 2 and 63. As a result, the pins 69 and 70 installed on the side surface of the cassette holder 7 are guided by the cam grooves 68 and 67, move rightward and descend, and when they reach a predetermined position, a switch (not shown) is activated to lower the pins. The rotation of the ding motor 73 is stopped. In this way, the cassette holder 7 is lowered to a predetermined position, and
Cassette 2 is loaded. The ejection operation of the cassette 2 is carried out by the loading motor 73 in the opposite direction to that during loading.
The cassette holder 7 is rotated and the gear mechanism performs the reverse operation to the above-described loading operation, thereby raising the cassette holder 7 to a predetermined position.

The loading and unloading operations of the cassette 2 must be carried out slowly to avoid applying impact to the cassette, cassette holder, and its peripheral equipment. In order to increase the reduction ratio of gear 63 to gear 61, the diameters of gears 62 and 63 must be increased, and arms 64 and 65 are designed to extend pins 70 and 69 from the beginning to the end of cam grooves 67 and 68. Since it needs to be moved, it requires a certain length, and therefore the overall structure of the cassette loading device becomes large, which poses a problem in terms of compactness.

(Objective) The present invention solves the drawbacks of the prior art described above, and makes it possible to automatically perform the loading operation by simply inserting a predetermined amount of the record carrier storage container into the device. An object of the present invention is to provide a record carrier storage container loading device that has improved performance and is downsized.

(Description of Embodiments) (FIGS. 2 to 9) Hereinafter, the means taken in the present invention to achieve the above object will be illustrated and explained using the embodiments shown in the figures.

In the following embodiments, a loading device for a record carrier storage container storing a magnetic sheet in which the record carrier is a disk-shaped record carrier is described, but the present invention is applicable to a magnetic type, optical type, or capacitance type. In addition to devices that use disks or sheet cassettes,
Of course, the present invention can be applied to devices using tape cassettes such as VCRs.

2 to 9 show an embodiment of the cassette loading device of the present invention, FIG. 2 is a perspective view of the cassette and the cassette loading device, FIG. 3 is a top view thereof, and FIG. 4 a
4 is a side view of the cassette and the gear mechanism of the cassette loading device at the time of insertion, and FIG. 4b shows the first slide plate in the state shown in FIG. , FIG. 5 is a side view of the gear mechanism holding the cassette and moving the second slide plate, FIG. 6 is an explanatory diagram of the operating state of the center core pressing member and pad, and FIG. 7 is loading. A control circuit diagram for the motor, FIG. 8 shows a configuration diagram of a cassette insertion detection switch and a cassette ejection completion detection switch, and FIG. 9 shows a perspective view of a specific example of a one-way clutch provided in a gear unit.

An embodiment of the present invention will be described with reference to FIGS. 2 and 3.

1 is a magnetic sheet which is a disc-shaped record carrier; 2 is a cassette which is a record carrier storage container for storing the magnetic sheet 1; 3 is a synthetic resin center core attached to the center of the magnetic sheet 1; 4 is a center core 3. This is the PG pin used for pulse generation embedded in the . Reference numeral 5 designates a spindle insertion hole into which the spindle of the seat rotation motor provided around the center core 3 of the cassette 2 is inserted, and 6 designates a pad insertion window provided in the cassette 2, which will be described later. A magnetic head insertion window is provided on the lower surface where the provided pad insertion hole 6 is located.

Reference numeral 7 designates a cassette holder which is a record carrying storage container holding means for storing the cassette together with a second slide plate 31 which will be described later and which holds the inserted cassette 2. Two pins 12 are provided on the sides of the cassette holder, as shown in FIG. There are also two pins 12' on the other side as shown in
has been planted. Reference numeral 8 denotes side plates which are fixed to the chassis of the main body of the recording or reproducing apparatus (not shown) with fixing members such as screws, and are disposed on both sides of the cassette 2. Reference numeral 9 indicates a long groove formed in two places in the side plate 8 and extending in the vertical direction, and 16 also indicates a long groove formed in the side plate 8.
It is a long groove that has one hole drilled in it and extends in the vertical direction. These long grooves 9 and 16 do not prevent the vertical movement of two pins 12 set on the side of the cassette holder 7 and one pin 17 set on the side of the pad 44, which will be described later. It has a function. Note that the other side plate 8 is also provided with two long grooves 9 except for the long groove 16. 10
is a first sliding plate which is adjacent to the side plate 8 and has a rack 11 fixedly attached to the lower end of one side and acts as a first moving means. This first slide plate 10 has two long grooves 15 extending horizontally.
, two cam grooves 13 having a "〓" shape and controlling the vertical movement of the cassette holder 7, and a large cam groove 13 having a similar shape to the cam grooves 13 and controlling the vertical movement of the pad 44. A cam groove 18 is provided. Similarly, attach the rack 11' to the other side plate 8.
is fixedly installed, and two long grooves 15 and two cam grooves 13 for controlling the vertical movement of the cassette holder 7 are also provided (FIG. 3). 14 limits the sliding amount of the first slide plate 10, and
The pin 14 is a pin for maintaining the sliding movement of the first slide plate 10 along the side plate 8, and this pin 14 is installed in the side plate 8 and is slidably engaged with the long groove 15 of the first slide plate 10. It matches. Such a pin 14 is similarly planted on the other side plate 8 and is engaged with the long groove 15 of the first slide plate 10. Reference numeral 17 denotes a pin installed on the side surface of the pad 44, and is slidably engaged with the long groove 16 of the side plate 8 as a cam groove 18 of the first slide plate 10.

Next, a driving mechanism for moving the record carrier storage container in the container insertion direction and the container loading direction while holding the storage container will be described.

19 is a first slide plate 10 and a second slide plate to be described later.
This is a loading motor for loading or unloading the cassette 2 by sliding the slide plate 31 of the cassette 2. 20 is a worm gear rotated by the loading motor 19; 21 is a worm wheel that meshes with the worm gear 20;
2 is a gear coaxially connected to the worm wheel 21, and a driving means for driving a second slide plate 31 in the container insertion direction and container loading direction, which constitutes a recording carrier storage container holding means to be described later;
Similarly, it acts as a drive source that transmits driving force to a first partially toothed gear 25 and a second partially partially toothed gear, which will be described later. 23 is a gear that meshes with the gear 22, 24 is a gear unit that meshes with the gear 23, and this gear unit 24 meshes with the rack 29 of the second slide plate 31. The gear unit 24 is provided with a one-way clutch mechanism, and the gear 2 is connected through a rack 29 fixed to the second slide plate 31.
3 is transmitted to rack 29, but rack 29
The movement of the gear 23 has a function that is not transmitted to the gear 23.

The first slide plate 10 transfers the rotational torque of the loading motor 19 to the rack 11 through a worm gear 20, a worm wheel 21, a gear 22, a first partially toothed gear 25, a second partially toothed gear 27, and a gear 26.
and is slid in the direction of arrow A or B shown in FIG. That is, after moving the second slide plate 31, which is a recording carrier storage container holding means to be described later, to a predetermined position in the container insertion direction by manual operation and driving means operated by a drive source,
Since the pin 12 installed on the side surface of the cassette holder 7 is engaged with the cam groove 13 of the first slide plate 10, the gear 26 is rotated by power from the drive source, and the first The rack 11 fixed to the slide plate 10 is moved in the direction of arrow A or B to lower or raise the record carrier storage container holding means to the loading position. In this way, the cassette holder 7, the pin 12 planted on its side, the first
slide plate 10 and cam groove 1 provided therein
3. Rack 1 fixed to first slide plate 10
1 and a gear 26 meshing therewith act as a driving means for loading or unloading the recording carrier storage container holding means.

Reference numeral 28 denotes a lever, which is coaxially coupled with the first partially toothed gear 25 and second partially toothed gear 27, and is provided on the side surface of a rack 29 fixed to a second slide plate 31, which will be described later. 57 moves in the direction of arrow A and is rotated clockwise by contacting the lever 28, causing the first partially toothed gear 25 and the second partially toothed gear 27 to rotate clockwise, so that the gear 22 and the second partially toothed gear 27 are rotated clockwise. It meshes with the gear 26 and slides the first slide plate 10. In this way, the first partially toothed gears 25, 22, the second partially toothed gear 27, and the gear 26
The power from the drive source described above is transmitted through the engagement with the drive means, and the drive means is actuated to move the record carrier storage container holding means to the loading position.

Note that when the first partially toothed gear 25 and the gear 22 and the second partially toothed gear 27 and the gear 26 are not engaged with each other, the power from the drive source cannot be applied via the gear 22, Therefore, no power is transmitted to the rack 11 via the gear 26. The selective transmission of power by the first partially toothed gear 25 and the second partially toothed gear 27 is achieved by a lever, which is a control means, provided on the side surface of a rack 29 fixed to the first slide plate 31. This is done by the operation of 57.

The first toothless gear 25 and the second toothless gear 27 are integral, and the position of the toothless portion is as follows:
As shown in FIG. 4b, in the clockwise rotation direction, the angles in the circumferential direction of the toothless parts of the first and second toothless gears 25 and 27 are the same;
The clockwise end of the toothless portion of the second toothless gear 25 precedes the clockwise end of the toothless portion of the second toothless gear 27. Therefore, lever 28
is rotated clockwise by contact with the lever 57, the first partially toothed gear 25 and the second partially toothed gear 27 also start rotating clockwise at the same time, and the first partially partially toothed gear 25 first rotates. meshes with the gear 22, the first partially toothed gear 25 is rotated clockwise by the gear 22, and the second gear 25 is rotated clockwise by the gear 22.
The partially toothed gear 27 meshes with the gear 26.

Reference numeral 30 denotes a rotating shaft connecting gears 26 and 26' that mesh with racks 11 and 11' fixed to the first slide plate 10. A driving torque is transmitted to simultaneously slide the first slide plate 10 in the same direction.

Next, a second slide plate 31 is equipped with a cassette holding means to be described later and is a record carrier storage container holding means movable in the cassette insertion direction and the loading direction.
I will explain about it.

A clamping means is constituted by a leaf spring 34, which is an elastic member attached to the second slide plate 31 and has a free end 34a, and a cassette receiving part 35.
, and hold the second slide plate 31 in the cassette until just before the position of the free end 34a of the leaf spring 34 is regulated by the regulating part 36, which is a position regulating means for the free end 34a provided at the tip of the cassette holder 7. The holder 7 is manually pushed into the holder 7, and a cassette insertion detection switch (not shown in FIG. 7) is activated at the position (first position) immediately before the free end 34a of the leaf spring 34 is positionally restricted by the restriction part 36. , the loading motor 19 is rotated to pull the second slide plate 31 into the cassette holder 7, and the free end 34a of the leaf spring 34 is pulled out.
The position of the cassette 2 is regulated by the regulating part 36, and the cassette 2 is pulled into the lower surface of the cassette holder 7, and a pressing force is applied to the cassette 2 to clamp the cassette 2 with a large force.

Reference numeral 32 designates a pin for guiding the sliding movement of the second slide plate 31 in the direction of arrow A or B, and is mounted on the cassette holder 7. 33 is a long groove bored in the second slide plate 31;
The pin 32 has a shape that extends in the direction of movement of the cassette holder 7, and the pin 32 is engaged with this long groove 33. The leaf spring 34 is attached to the upper end of the second slide plate 31, and a fixed cassette receiving portion 35 is provided at the lower end of the second slide plate 31. The plate spring 34 and the tip end 35 constitute a clamping means to clamp the cassette 2. 29 is the second slide plate 31
It is a rack fixedly attached to the rack, with a lever 57 on the side.
is planted and moves along with the sliding movement of the second slide plate 31 in the direction of arrow A or B.
When the second slide plate 31 slides in the direction of arrow A, the rack 29 also moves in the direction of arrow A, bringing the lever 57 into contact with the lever 28 and moving the first partially toothed gear 2.
5 and the second partially toothed gear 27 in the clockwise direction. This rack 29 meshes with the gear unit 24. Reference numeral 36 designates a regulating portion provided at the tip of the cassette holder 7, which is provided at a position facing the leaf spring 34, and is provided at a position facing the leaf spring 34, so that the free end 34a of the leaf spring 34
The position is regulated when pushing.

Gear shafts 37, 40 and 41 shown in FIG.
5, the second partially toothed gear 27, and the lever 28, and the gear shaft 41 pivotally supports the gear 23, respectively. 38 is a retaining ring that connects the gear unit 24 and the gear shaft 37.
is established between.

42 is a detection yoke which is a component of a pulse generator that detects the rotational phase of the magnetic sheet 1 by detecting the PG pin 4 of the magnetic sheet 1; 43 is a support arm to which the detection yoke 42 is attached;
4, and moves up and down together with the pad 44. This pad 44 performs a downward movement to closely oppose the upper surface of the magnetic sheet 1 through the pad insertion window 6 of the cassette 2, thereby stabilizing the contact state between the magnetic head 56 and the magnetic sheet 1 that abuts the lower surface of the pad 44. . Reference numeral 45 denotes a guide shaft that penetrates inside the pad 44 and is set up on a mounting chassis 58 (FIG. 6).

46 is a center core pressing member for mounting the center core 3 of the cassette 2 on the spindle 53 of the sheet rotation motor 54. 47 is a rotating shaft rotatably inserted into the center core pressing member 46;
It is fixed to a chassis (not shown). 49 is a direct-acting cam, which is fixed to the side surface of the other first slide plate 10. Reference numeral 48 denotes a pin that is set up at the arm bent end 48' (FIG. 6) of the center core pressing member 46, and is in contact with the linear motion cam 49. A spring 50 is stretched between the bent end 48' of the arm of the center core pressing member 46 and a chassis (not shown), so that the end 48' provided on the pin 48 always faces downward, that is, the As shown in FIG. 6, it is biased counterclockwise around the pressing member 46 and shaft 47.

In FIG. 4a, the cassette 2 is inserted into the cassette holder 7 from the direction of arrow C, and the leaf spring 34 provided on the second slide plate 31 and the cassette receiving part 3
5, and then push the cassette 2 in the direction of arrow A by hand.

At this point, the loading motor 19 has not yet been activated. A worm gear 20 that meshes with the loading motor 19 meshes with a worm wheel 21, a gear 22 coaxially connected with the worm wheel 21 meshes with a gear 23, and the gear 23 meshes with a gear unit 24. Since the lever 57 provided on the side surface of the rack 29 fixed to the second slide plate 31 is in a position not shown, the lever 28 coaxially connected to the first partially toothed gear 25 is moved clockwise by the lever 57. Therefore, the toothless portion of the first partly toothless gear 25 faces the gear 22, and the gear 22 and the first partly toothless gear 25 do not mesh with each other.

Regarding the second toothless gear 27, as shown in FIG. 4b, the toothless portion of the second toothless gear 27 is
6, the gear 26 and the second partially toothed gear 27 do not mesh with each other.

Since the loading motor 19 is not activated, the first slide plate 10 is not performing a sliding operation, and therefore the pin 12 erected on the side surface of the cassette holder 7 is positioned above the cam groove 13. are doing.

FIG. 5 shows a state in which the cassette 2 is held between the leaf spring 34 and the cassette receiving part 35, is pushed further by hand, and then the cassette is retracted by starting the loading motor 19. This will be explained below. explain.

As shown in FIG. 4a, the second slide plate 31
The tip of the cassette 2 is held between the leaf spring 34 and the cassette receiving part 35, and then the tip of the cassette 2 is held in place by the arrow A.
push in the direction. This pushing action causes the second
The slide plate 31 slides in the direction of arrow A.
As a result, the rack 29 also moves in the direction of arrow A. Gear unit 2 meshing with rack 29
Since gear 4 is provided with a one-way clutch, it does not give any rotation to gear 23. Second
By sliding the slide plate 31 in the direction of arrow A, the leaf spring 34 and the cassette receiving part 35 are pulled in along the regulating part 36 while holding the cassette 2, and the free end 34a of the leaf spring 34 is pulled into the regulating part 3.
6. That is, as shown in FIG. 5, when the free end 34a of the leaf spring 34 is fully retracted, the clamping force against the cassette 2 becomes very large. At a position (first position) immediately before the free end 34a of the leaf spring 34 is positionally restricted by the restricting portion 36, a cassette insertion detection switch (not shown) is activated and the loading motor 19 starts rotating.

When the loading motor 19 rotates in a predetermined direction, the rotation is applied to the gear 23 via the worm gear 20, worm wheel 21, and gear 22.
Gear 23 rotates clockwise. When the gear unit 24 is rotated counterclockwise due to the clockwise rotation of the gear 23, the one-way clutch provided in the gear unit 24 transmits the counterclockwise rotation of the gear unit 24 to the rack 29, which causes the second slide to rotate. The plate 31 is moved in the direction of arrow A.

On the other hand, the lever 5 provided on the side of the rack 29
7 also moves in the direction of arrow A and comes into contact with lever 28,
Rotate this clockwise. This allows the first
The second partially toothed gears 25 and 27 rotate clockwise, and the first partially partially toothed gear 25 meshes with the gear 22.
Thereafter, the rotation of the gear 22 causes the first partially toothed gear 2 to rotate.
5 is rotated counterclockwise, and along with this, the second partially toothed gear 27 is also rotated clockwise and meshes with the gear 26. Therefore, the rotational torque of the loading motor 19 is determined by the worm gear 20,
Worm foil 21, first partially toothed gear 25 and second
is transmitted to the rack 11 via the gear 27 and the gear 26, and the first slide plate 10 starts sliding in the direction of arrow A. When the first slide plate 10 begins to slide, the pin 12 set on the side surface of the cassette holder 7 shown in FIG. 3B is guided by the cam groove 13, and the cassette 2 begins to move downward to the loading position.

In this way, while the second slide plate 31 holding the cassette 2 performs a retracting operation in the horizontal direction and the lever 28 is not rotated by the lever 57, the first partially toothed gear 25 and the second partially toothed gear 27
Since the missing teeth of the gears 22 and 26 face the gears 22 and 26, no driving force is applied to the first slide plate 10.
When the gear portions of the first partially toothed gear 25 and the second partially toothed gear 27 mesh with the gears 22 and 26, the driving torque of the loading motor 19 is applied, and as the first slide plate 10 starts to move, the rack 29 and gear 2
4 is released, and the second slide plate 3
The horizontal drive of cassette 1 is stopped and cassette 2 is moved downward. The operation for taking out the cassette 2 is the opposite of the loading operation described above. As a result, the first toothless gear 25 and the second toothless gear 27 transmit the rotational torque of the loading motor 19 depending on whether or not their toothless portions and gear portions mesh with the gears 22 and 26. and gives the cassette holding means movement in the container insertion direction and movement in the loading direction.

Referring to FIG. 6, the operation of the pad 44 and center core pressing member 46 will be explained.

The pad 44 is located at the arrow A on the first slide plate 10.
It is lowered by the sliding movement in the direction, and descends along the guide shaft 45 from the initial position shown by the two-dot chain line to the position shown by the solid line. As the pad 44 descends, the detection yoke 42 and detection coil 52, which are components of the pulse generator attached to the support arm 43, descend together to face the PG pin 4 embedded in the center core 3.

By positioning the center core pressing member 46 from the low lift surface to the high lift surface of the direct drive cam 49 fixed to the side surface of the other first slide plate 10,
It rotates in the direction of arrow D about the rotation center shaft 47, moves from the position shown by the two-dot chain line to the actual position, applies a pressing force to the center core 3 with the tip 46' of the center core pressing member 46, and the seat rotation motor 54 into the spindle 53.

Then, as the direct-acting cam 49 further moves in the direction of arrow A as shown in FIG.
is located on the low lift surface of the direct-acting cam 49, so the center core pressing member 46 returns to the initial position shown by the two-dot chain line. Note that if the low lift surface on the left side of the high lift surface of the direct drive cam 49 is made slightly higher than the low lift surface on the right side, the center core pressing member 46 will be located at a position slightly away from the position indicated by the solid line. It can be held in an elevated position. Furthermore, in this case, the direct-acting cam 49 moves the center core pressing member during the remaining sliding stroke of the first slide plate 10 in the direction of arrow A after the cassette holder 7 is lowered to the loading position (second position). 46.

A magnet 55 is provided on the spindle 53 and exerts a magnetic attraction force on a soft magnetic member (not shown) embedded in the center core 3 to facilitate mounting and positioning of the center core 3.

FIG. 7 shows an example of a control circuit for the loading motor 19 for performing the above-described cassette loading and unloading operations.

In the figure, SW _M is the main switch, SW _C connected to the power supply +V _CC through resistor R ₁ .
is provided, for example, in a part of the cassette holder 7 shown in FIGS. 2 and 3, and when the second slide plate 31 slides in the direction of the arrow A, the free end 34a of the leaf spring 34 comes into contact with the restriction part. 336 and the clamping force is increased, the second slide plate 31
This is a normally open type cassette insertion detection switch that is set to be opened by the main switch SWM and is connected in series with the resistor _R2 to the main switch _SWM . SW _L is, for example, the first slide plate 1 shown in Figures 2 and 3.
A normally closed cassette loading completion detection switch is provided to be opened by the first slide plate 10 at the end position of the slide operation in the direction of arrow A of 0, and is connected in series with the main switch SW _M together with a resistor _R3 . It is connected to the. SW _E is a normally closed eject switch that is opened by operating an eject key (not shown), and is connected in series with the main switch SW _M together with a resistor _R4 .
SW _U is provided, for example, in a part of the cassette holder 7 shown in FIGS. This is a normally closed type cassette ejection completion detection switch that is provided so as to be opened by the second slide plate 31 after the cassette is separated from the regulating part 36 and the clamping force _{is weakened.}
It is connected in series with the main switch SW _M. FF ₁ is set when the potential at the connection point between cassette insertion detection switch SW _C and resistor R ₂ changes from high to low, and then the potential at the connection point between cassette loading completion detection switch SW _L and resistor R ₃ changes from high to low. The first RS flip-flop, FF ₂ , of the falling synchronous type, connected so as to be reset by a change from high to low, changes the potential at the connection point between the eject switch SW _E and the resistor R ₄ from high to low. After the cassette ejection completion detection switch is set due to
a second falling synchronous RS flip-flop connected to be reset by a change in potential from high to low at the connection point between SW _U and resistor _R5 ;
The MCC responds to the high level of the Q output of the first FF ₁ by rotating the loading motor 19 in the normal direction (clockwise rotation in the above example) for loading the cassette.
In response to the high level of the Q output of the second FF ₂ , the loading motor 19 is reversed (rotated counterclockwise) for ejection, and the Q output of the first FF ₁ and the second FF ₂ is This is a motor control circuit configured to stop the loading motor 19 in response to a low level.

In the above configuration, when loading a cassette, after closing the main switch SW _M , the cassette 2
By inserting and pushing slightly, the second slide plate 31 slides in the direction of arrow A, and the leaf spring 34
When the free end 34a of the cassette insertion detection switch SW _C
Since FF1 is opened, the first FF ₁ is set and its Q output becomes high level. As a result, the motor control circuit MCC rotates the loading motor 19 in the forward direction for loading the cassette. As a result, the operations for loading the cassette described above are performed. Then, at the end of cassette loading, when the first slide plate 10 reaches the end position of the sliding movement in the direction of arrow A and the cassette loading completion detection switch _SWL is released, the first FF ₁ is reset. The Q output becomes low level, and the motor control circuit MCC stops normal rotation of the motor 19.

Next, when ejecting the cassette, when the eject key (not shown) is operated to release the eject switch SW _E , the second FF ₂ is set and its Q output becomes high level. This causes the motor control circuit MCC to reversely rotate the motor 19 to eject the cassette. As a result, the operations for ejecting the cassette described above are performed. At the end of cassette ejection, the second slide plate 31 moves toward arrow B.
When the free end 34a of the leaf spring 34 separates from the regulating part 36 and a part of the cassette 2 protrudes from the exterior of the recording or reproducing apparatus, the cassette ejection completion detection switch is activated.
Since SW _U is opened, the second FF ₂ is reset and its Q output becomes low level. As a result, the motor control circuit MCC stops the reverse rotation of the loading motor 19.

FIG. 8 shows a specific example of the switches SW _C and SW _U described above and their arrangement, and is a view of the cassette holder 7 viewed from below the second slide plate 31.

In the figure, conductor patterns P ₁ and P ₂ are provided on the lower side of the upper surface of the cassette holder 7, that is, on the ceiling surface.
The conductor patterns P ₁ and P ₂ are provided on a surface covered with an insulating member. The sliding brushes BR ₁ to _{BR 4} are fixed to the upper surface of the second sliding plate 31 with fixing members such as screws, but the second sliding plate 31 is coated with an insulating material so that the entire second sliding plate 31 does not exhibit conductivity. provided on the surface. The brushes BR ₁ and BR ₂ constitute a switch SW _C , and the brushes BR ₃ and BR ₄ constitute a switch SW _U. Note that x indicates the cassette ejection completion position, and y indicates the cassette manual insertion completion position. With this configuration, the slides BR ₁ to _{BR 4} provided on the second slide plate 31 are connected to the second slide plate 31.
The switch SW C slides with the sliding movement in the direction of arrow A or B. In the sliding movement in the direction of arrow A, switch SW _C is released at the manual insertion completion position, and in the sliding movement in the direction of arrow B, switch SW C is released.
SW _U is opened at the ejection completion position. The arrangement of these switches is such that the brushes BR 1 to BR 4 are placed on the ceiling of the cassette holder 7 and the brushes BR ₁ to BR ₄ are placed on the second slide plate 31.
It is also possible to provide conductor patterns P ₁ and P ₂ on the top surface.

FIG. 9 shows a perspective view of the gear unit 24 with a one-way clutch.

In the figure, 29 is a rack provided on the second slide plate 31, and 59 is a gear that meshes with the rack 29. 60 has a notch 61, and the gear 5
This is a flange integrally constructed with 9. 62 is a coil spring. Reference numeral 64 denotes a gear for transmitting driving force, which meshes with the gear 23 as shown in FIG. 65 is a cylindrical portion formed integrally with the gear 64, and 62 is a coil spring, the bent portion 63 of which fits into a notch 61 provided in the flange 60. Incidentally, reference numeral 37 denotes a gear shaft for pivotally supporting the gear unit 24 having such a mechanism on the chassis 51, as shown in FIG.

Next, the operation will be explained. When the cassette 2 is manually inserted, the rack 29 moves in the direction of arrow A together with the second slide plate 31. As a result, the gear 59 rotates counterclockwise around the gear shaft 37. At the same time, the flange 60 integrally formed with the gear 59 also rotates counterclockwise, and the coil spring 62 fitted in the notch 61 of the flange 60 also rotates counterclockwise.
However, since this rotational direction is the direction in which the inner diameter of the coil spring 62 widens, rotational torque is not transmitted to the gear 64 and the cylindrical portion 65 integrally formed therewith, and the rotational torque is not transmitted to the gear 59, the flange 60, and the notch portion. 61 and the coil spring 62 idle. Next, when rotational torque is applied from the gear 23 meshing with the gear 64 and the gear 64 is rotated counterclockwise, the cylindrical portion 65 integrally configured with the gear 64
also rotates counterclockwise. This rotates in such a way that the coil spring 62 is wound around the cylindrical part 65, so a frictional force acts on the coil spring 62 and the cylindrical part 65, and the inner diameter of the coil spring becomes smaller. coil spring 62, bent part 63, notch part 61, flange 60, gear 5
9, a driving force is applied to the rack 29 to move it in the direction of arrow A.

When the cassette 2 is ejected, the gear 64 is given rotational torque by the gear 23 and rotates clockwise, but this direction of rotation is controlled by the coil spring 62.
This is a rotation in the direction of expanding the inner diameter of. By the way, a one-way clutch has the characteristic of transmitting driving torque for rotation in one direction and not transmitting driving torque for rotation in the opposite direction. Under conditions where the load applied to the gear to which force is applied is large, driving torque can be transmitted even for rotation in the opposite direction. Therefore, due to the fact that there is a slight frictional force between the coil spring 62 and the cylindrical portion 65, the weight of the cassette 2 applied to the rack 29, and the load caused by the friction between the second slide plate 31 and the cassette holder 7, etc. The one-way clutch also has a large load due to the gear train of the gears 23 and 22, the worm wheel 21 and the worm gear 20, the first partially toothed gear 25 and the second partially toothed gear 27, which are applied to the gear 64 side. The rack 29 can be moved in the direction of arrow B by generating idling torque.

(Cassette loading operation) Next, the cassette loading operation will be explained.

In FIG. 4a, the cassette 2 is manually inserted into the cassette holder 7 from the direction of arrow C, and the tip of the cassette 2 is held between the leaf spring 34 and the cassette receiving part 35. Then, when the cassette 2 is further pushed in by hand in the direction of arrow A, the second slide plate 31 slides over the pin 32 set in the cassette holder 7.
It is slid in the direction of arrow A along the long groove 33 that is slidably engaged with. At this time, the rack 29 fixed to the second slide plate 31 also moves in the direction of arrow A. The gear unit 24, which is engaged with the rack 29, does not apply any driving torque to the gear 23 due to the one-way clutch provided therein. When the cassette 2 is further pushed in by hand in the direction of arrow A while being held by the holding means, the free end 34a of the leaf spring 34 is pushed down by the regulating portion 36, resulting in the state shown in FIG. A cassette insertion detection switch (not shown) is activated at the position just before that (first position). As a result, power is started to be supplied to the loading motor 19 from a power source (not shown), and the loading motor 19 starts rotating, for example, in a clockwise direction. Therefore, a counterclockwise rotational torque is applied to the wormwheel 21 and the gear 22 through the worm gear 20, a clockwise rotational torque is applied to the gear 23, and a counterclockwise rotational torque is applied to the gear unit 24. At this time, the one-way clutch provided in the unit 24 allows the rack 29 to continue moving in the direction of arrow A as the gear 23 rotates. As a result, the second slide plate 31 moves along the long groove 33 that is slidably engaged with the pin 32 as indicated by the arrow A.
be slid in the direction. In this process, the regulating portion 36 is attached to the free end 34a of the leaf spring 34.
By this action, the clamping force for the cassette 2 clamped between the leaf spring 34 and the cassette receiving part 35 can be increased.

The first partially toothed gear 25 and the second partially toothed gear 27 are
At the initial position, a spring and a positioning member (not shown) connect the toothless portion of the first toothless gear 25 and the gear 22,
The toothless portion of the second toothless gear 27 and the gear 26 are located so as to face each other (FIG. 4 a, b), so that the first toothless gear 25 and the second toothless gear 27 does not rotate.

As rack 29 moves in the direction of arrow A, lever 57 also moves in the direction of arrow A, comes into contact with lever 28, and rotates it clockwise as shown in FIG. As a result, both the first gear 25 and the second gear 27, which are coaxially connected to the lever 28, rotate clockwise. First, the first partially toothed gear 25 meshes with the gear 22 rotating counterclockwise, and the first partially partially toothed gear 25 is rotated clockwise. As a result, the second partially toothed gear 27 becomes the gear 2.
6, the gear 26 is rotated counterclockwise, the rack 11 is moved in the direction of arrow A, and the first slide plate 10 is moved in the direction of arrow A. The rotational torque of the gear 26 is applied via the rotating shaft 30 to the gear 26' that meshes with the rack 11' of the other first slide plate 10, causing the other first slide plate 10 to slide in the direction of arrow A. Then, the direct-acting cam 49 is also moved in the direction of arrow A.

Pin 12 planted on the side of cassette holder 7
The pin 17 planted on the side surface of the pad 44 is guided by the long grooves 9 and 16 and the cam grooves 13 and 18 and moves downward, whereby the cassette holder 7 and the pad 44 begin to move downward.

The second slide plate 31 is engaged and held by a pin 32 set on the cassette holder 7 and a long groove 33 provided on the second slide plate 31.
When the cassette holder 7 begins to descend, it descends, and at the same time the rack 29 also begins to descend. As the rack 29 descends, the gear 24 and the rack 29 are disengaged, and the second slide plate 31 stops sliding in the direction of arrow A. The first slide plate 10 transfers the rotational torque of the loading motor 19 to the rack 11 through a worm gear 20, a worm wheel 21 and a gear 22, a first partially toothed gear 25, a second partially toothed gear 27, and a gear 26. Because it continues to give, arrow A
cassette holder 7 and pad 4.
4 is lowered and stops its movement upon reaching the loading position (second position).

Next, the operation of the center core pressing member 46 and pad 44 will be explained with reference to FIGS. 3 and 6.

The rotational torque of the loading motor 19 is applied to the gear 26 via the worm gear 20, the worm wheel 21 and the gear 22, the first partially toothed gear 25, and the second partially toothed gear 27. The rotational torque of this gear 26 is applied to the gear 26' via the rotating shaft 30,
Move the rack 11' in the direction of arrow A. As a result, the direct-acting cam 49 fixed to the side surface of the other first slide plate 10 also moves in the direction of arrow A. After the cassette holder 7 has descended to the loading position, the pin 48 of the center core pressing member 46 is pressed against the pin 48 of the center core pressing member 46.
When the high-lift surface of the direct-acting cam 49 is positioned, the center core pressing member 46 rotates in the direction of arrow D about the rotation center shaft 47, and reaches the position shown by the solid line from the position shown by the two-dot chain line, and the center core pressing member 46 A pressing force is applied to the center core 3 by the tip 46' of the
The center core 3 is press-fitted into the spindle 53 of the seat rotation motor 54. When the first slide plate 10 further moves in the direction of arrow A, the pin 48 is located on the low lift surface of the direct-acting cam 49, and the center core pressing member 46 rotates in the direction of arrow E, as shown by the two-dot chain line. Return to position.

When the cassette holder 7 is lowered, the pad 44 is guided by the guide shaft 45 as the first slide plate 10 slides in the direction of arrow A, and is lowered from the position shown by the two-dot chain line to the position shown by the solid line.
In this way, the pad 44 is closely opposed to the upper surface of the magnetic sheet 1, and the magnetic sheet 1 and the magnetic head 56 are
It is possible to make the contact condition good. When the first slide plate 10 reaches the end of its sliding movement in the direction of arrow A, a cassette loading completion detection switch (not shown) is activated and the rotation of the loading motor 19 is stopped.

After that, the seat circuit motor 54 is rotated,
The magnetic sheet 1 is rotated, and the magnetic head 56 performs recording or reproduction on the magnetic sheet 1. During recording and reproduction, the magnetic head 56 is moved continuously or intermittently in the radial direction of the magnetic sheet 1 by a head moving table 56' as shown by arrows F and G in FIG.

(Cassette ejection operation) Next, the cassette ejecting operation will be explained.

When an unillustrated eject key or the like is operated, the rotation of the sheet rotation motor 54 is stopped, and an unillustrated eject switch (FIG. 7) is operated, and the loading motor 19 is rotated in the opposite direction to that when loading a cassette, for example, in a reverse direction. Start rotating clockwise. Worm gear 20 also rotates counterclockwise, and worm wheel 21 and gear 22 rotate clockwise. As the gear 22 rotates clockwise, the gear 23, the first partially toothed gear 25, and the second partially partially toothed gear 27 rotate counterclockwise. The counterclockwise rotation of the gear 23 causes the gear unit 24 to rotate clockwise.
The counterclockwise rotation of the second partially toothed gear 27 is caused by gear 2.
6, and the gear 26 is rotated clockwise. Rack 11 is rotated clockwise by gear 26.
starts moving in the direction of arrow B, and the first slide plate 10 similarly starts sliding in the direction of arrow B.
Then, the center core pressing member 46
9 moves in the direction of arrow B, the pin 48
is located from the low lift surface to the high lift surface of the linear drive cam 49, so it rotates in the direction of arrow D from the position shown by the two-dot chain line to the position shown by the solid line, and the linear drive cam 49 further moves in the direction of arrow B. By continuing to do so, the pin 48 is located on the low lift surface of the direct drive cam 49, and the 2
It returns to the position shown by the dotted chain line. And after that,
The pin 14 set on the side of the cassette holder 7 and the pin 17 set on the side of the pad 44 are connected to the long grooves 9 and 16 provided on the side plate 8, and the cam groove 13 provided on the first slide plate 10. and 18, the cassette holder 7 and pad 44 are raised.

In this way, by sliding the first slide plate 10 in the direction of arrow B, the center core pressing member 46 returns to the initial position, and then the cassette holder 7 rises and returns to the initial position, and the pad 44 returns to the initial position. At the time of returning to the position, the meshing between the clockwise rotating gear 26 and the counterclockwise rotating second partially toothed gear 27 is released by the partially toothed portion of the second partially partially toothed gear 27. , the transmission of the driving force to the gear 26 is cut off, and the first slide plate 10 therefore stops its sliding operation.

On the other hand, as the cassette holder 7 rises, the second slide plate 31 also rises, and the rack 29 engages with the gear unit 24 again. Since the gear unit 24 is rotating clockwise in the opposite direction to the lowering operation of the cassette holder 7, the rack 29 is moved in the direction of arrow B. Since the gear unit 24 is provided with a one-way clutch, the idle torque of the one-way clutch is used to move the rack 29 in the direction of arrow B. slide plate 3
By taking into consideration the frictional load between the rack 29 and the cassette holder 7, rotational torque can be transmitted to the rack 29 without any hindrance during the ejection operation of the cassette 2.

As described above, the second partially toothed gear 27 and the gear 2
Even after the meshing with gear 6 is released, the first partially toothed gear 25 is still meshing with the gear 22.
The gear 22 rotating clockwise causes the first partially toothed gear 25, second partially toothed gear 27, and lever 28 to rotate counterclockwise, so that the first partially partially toothed gear 25
The toothless portion faces the gear 22, thereby disengaging the first toothless gear 25 from the gear 22, and cutting off the transmission of the driving force to the first toothless gear 25. Then, the first partially toothed gear 25, second partially toothed gear 27, and lever 28 are returned to the initial positions shown in FIGS. 4a and 4b by means of a spring and a positioning member (not shown).

Now, the rack 29 is the loading motor 19.
is still rotating, so gear unit 2
4, the second slide plate 31 also slides in the direction of arrow B, and the leaf spring 34 and cassette receiving part 35 move from the position shown in FIG. 5 to the position shown in FIG. 4a. However, at a position where the cassette 2 fully protrudes from the exterior of the recording or reproducing apparatus (not shown), a cassette ejection completion detection switch (not shown) is activated, thereby cutting off the power supply to the loading motor 19 and removing the cassette 2. The ejection operation is completed.

In the above-mentioned embodiment, a mechanism for inserting and removing a cassette is described as having a gear 23, a gear unit 24 with a one-way clutch, and a rack 29 fixed to the second slide plate 31. 23. It is also possible to omit the gear unit 24 and the rack 29, and perform the entire process from insertion of the cassette to the second slide plate 31 to completion of its sliding operation by manual operation. In this case, for ejecting the cassette in the horizontal direction when taking out the cassette, any conventionally well-known means will be selected and used as appropriate.

(Effects) As explained above, according to the record carrier storage container loading device of the present application, a method is adopted in which the record carrier storage container is manually inserted into the device main body, and the container is inserted by a predetermined amount. Equipped with a container holding means that clamps and securely holds the container and pulls it into the device, which is advantageous in terms of space and ensures high reliability as it does not cause misalignment due to vibrations during the loading operation of the record carrier. A loading device can be realized.

In addition, when the record carrier storage container is in the fully inserted state, the driving force transmission between the drive source and the moving mechanism that moves the container holding means for transferring the container is cut off, and the container is held by the container holding means for a predetermined amount until the container is held by the container holding means. Since the container is connected to the drive source only after the container is inserted, the drive source does not become a load when inserting the container, and there are many advantages such as improved operability.

[Brief explanation of the drawing]

FIG. 1 is a side view of a conventionally proposed cassette loading device, FIG. 2 is a perspective view of an embodiment of the record carrier storage container loading device of the present invention, FIG. 3 is a top view thereof, and FIG.
Figure a is a side view of the cassette and gear mechanism when inserted, Figure b is a side view of the second partially toothed gear and part of the gear train when inserted, and Figure 5 is a side view of the inserted cassette and the gear mechanism during driving. FIG. 6 is a side sectional view of the center core pressing member and pad in the initial position and loading position; FIG. 7 is a control circuit diagram for the loading motor for loading and unloading the cassette; FIG. 8 is a side view of the gear mechanism; The figure shows a configuration diagram of a cassette insertion detection switch and a cassette ejection completion detection switch, and FIG. 9 shows a perspective view of a specific example of a one-way clutch provided in a gear unit. In the figure, 7 is a cassette holder, 8 is a side plate, 9 is a long groove provided in the side plate, 10 is a first slide plate,
11 is a rack, 12 is a pin planted on the side of the cassette holder 7, 13 and 18 are cam grooves provided in the first slide plate 10, 19 is a loading motor, 20 is a worm gear, 21 is a worm wheel, 22, 23 and 26 are gears, 24 is a gear unit equipped with a one-way clutch, 25 is a first partially toothed gear, 27 is a second partially toothed gear, 28 is a lever,
29 is a rack, 31 is a second slide plate, 32 is a pin installed in the cassette holder 7, and 33 is a second slide plate.
34 and 35 are leaf spring and cassette receiving portions provided on the first slide plate 10, 36 is a regulating portion provided on the cassette holder 7, 44 is a pad, and 46 is a center core. The pressing member 48 is a pin, and 49 is a direct-acting cam.

Claims (1)

[Scope of Claims] 1. A recording or reproducing apparatus in which a record carrier storage container containing a record carrier is loaded from a removable mounting position to a recording or reproducing loading position, comprising: a container holding means that clamps and holds the container, moves from the attachment/detachment position in the insertion direction of the container, and then descends in a substantially vertical direction and moves to the loading position; a moving mechanism that moves to and from a loading position; a drive source including a motor; and a drive source that cuts off power transmission between the moving mechanism and the drive source before inserting the container; The movement of the container holding means connects the driving source and the moving mechanism and brings the driving source into operation, and after the container holding means is moved in the container insertion direction by the driving force of the driving source, the movement mechanism is moved in the vertical direction. power transmission for moving the container holding means in a direction opposite to the insertion direction after moving the container holding means upward from the loading position by operating the moving mechanism by the drive source at the time of ejection; A record carrier storage container loading device comprising: a control means;