JPH0241812B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a record carrier container loading device in a recording or reproducing apparatus that loads a record carrier container for storing a record carrier.

(Background Art) For example, in a recording or reproducing apparatus that records or reproduces information while forming recording tracks concentrically or spirally on a disc-shaped record carrier such as a magnetic sheet, 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. To explain this based on FIGS. 1a and 1b, a leaf spring 34' is provided inside the upper part of the cassette holder 7' shown in FIG. If a large force is applied to the cassette 2 when it comes into contact with the leaf spring 34', a pressing force is applied to the cassette 2 by the leaf spring 34'. When the cassette 2 is still pushed into the cassette 2 and the pushing action is stopped at a predetermined position regulated by the bent portion 7'a of the cassette holder 7', the cassette 2 is pushed into the cassette holder under the pressing force of the leaf spring 34'. 7' is fixedly held as shown in FIG. 1b.

With this configuration, a large force is required to push the cassette 2 against the pressing force of the leaf spring 34', and the pressing force of the leaf spring 34 is also required when taking out the cassette 2 from the cassette holder 7'. A large force is required to take out the cassette against pressure, and therefore the insertion and removal of the cassette 2 cannot be performed smoothly, which is inconvenient in terms of operability, and in some cases may damage the cassette. I was also afraid.

(Objective) The present invention solves the drawbacks of the prior art.When inserting a record carrier storage container,
Only a small force is required when manually inserting the record carrier storage container into the clamping means, and after that, the clamping means is given a retracting action and at that time, the record carrier storage container is clamped with a large force, so that the record carrier storage container is securely inserted. It is an object of the present invention to provide a record carrier storage container loading device that can be safely loaded into a predetermined position.

(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 disc-shaped record carrier is described, but the present invention is applicable to a magnetic, optical or capacitive disc. In addition to devices that use 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. 5 is a side view of the gear mechanism while the cassette is being held and the second slide plate is moving. FIG. 6 is an explanatory diagram of the operating state of the center core pressing member and pad. 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 a 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 pad insertion hole 6 provided in the magnetic head is located.

Reference numeral 7 designates a cassette holder, which is a record carrier storage container that stores the cassette together with a second slide plate 31 (described later) that holds the inserted cassette 2, and has two pins 12 on its side, as shown in FIG. Two pins 12' are also installed on the other side so that the two pins 12' are connected to each other. Reference numeral 8 denotes side plates fixed to the chassis of the main body of the magnetic recording and reproducing apparatus (not shown) with fixing members such as screws, and are disposed on both sides of the cassette 2. 9
16 is a long groove formed in two places in the side plate 8 and extending in the vertical direction, and 16 is a long groove formed in one place in the side plate 8 and extending in the vertical direction. These long grooves 9 and 16 are connected to two pins 12 planted on the side of the cassette holder 7 and a pad 44 which will be described later.
It has a function that does not prevent vertical movement with one pin 17 set on the side surface of the pin 17. Note that the other side plate 8 also has two long grooves 9 excluding the long groove 16.
are similarly provided. A first slide plate 10 is adjacent to the side plate 8 and has a rack 11 fixed to the lower end of one side, which is a first moving means. Two extending long grooves 15, two cam grooves 13 having a "ⓓ" shape and controlling the vertical movement of the cassette holder 7, and two cam grooves 13 having a similar shape to the cam grooves 13 and controlling the vertical movement of the pad 44. A large cam groove 18 is provided to control the directional movement. The other side plate 8
A rack 11' is similarly fixed thereto, 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 is a pin for limiting the sliding amount of the first sliding plate 10 and for guiding the sliding movement of the first sliding plate 10 along the side plate 8; this pin 14 is set on the side plate 8; It is slidably engaged with the long groove 15 of the first slide plate 10. 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. 17 is a pin planted on the side of the pad 44, and is connected to the long groove 1 of the side plate 8.
6 and the cam groove 18 of the first slide plate 10 in a slidable manner. Reference numeral 19 is a loading motor for loading the cassette 2 by sliding the first slide plate 10 and a second slide plate 31, which will be described later. A worm gear 20 is rotationally driven by the loading motor 19. 21
22 is a gear coaxially connected to the worm gear 21; 23 is a gear that meshes with the gear 22; and the worm wheel 21 rotates by being given a driving torque from the gear 22 which rotates coaxially. do. 24 transfers the rotational torque of the gear 23 to the second slide plate 31 through a rack 29 fixed to the second slide plate 31.
The gear unit is equipped with a one-way rack (described later with reference to FIG. 9) that transmits the rotation of the gear 23 to the rack 29 but does not transmit the movement of the rack 29 to the gear 23. The first slide plate 10 also controls the rotation of the loading motor 19 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 . 11
and is slid in the direction of arrow A or B shown in FIG. Note that the first slide plate 10
A series of gear shafts 37, 40, 41 for sliding the second slide plate 31 and the second slide plate 31 are pivotally supported by a chassis 51 shown in FIG.

Reference numeral 28 denotes a lever, which is coaxially connected to the first partially toothed gear 25 and the second partially toothed gear 27, and includes a rack 29 fixed to a second slide plate 31, which will be described later.
The lever 57 on the side of the lever 57 moves in the direction of arrow A and comes into contact with the lever 28 to rotate clockwise, thereby rotating the first partially toothed gear 25 and the second partially toothed gear 27 clockwise. The first partially toothed gear 25 is meshed with the gear 22. Note that the first partially toothed gear 25
and the second partially toothed gear 27 are integrated,
As shown in FIG. 4b, which will be described later, the position of the toothless portion is determined by the circumference of the toothless portion of the first toothless gear 25 and the second toothless gear 27 in the clockwise rotation direction. The angles in the directions are about the same, but the clockwise end of the toothless part of the first toothless gear 25 is the same as the second toothless gear.
It precedes the end of the toothless portion of the toothless gear 27 in the clockwise direction. Therefore, when the lever 28 is rotated clockwise due to contact with the lever 57, the first partially toothed gear 25 and the second partially toothed gear 27 are also rotated clockwise at the same time, and the first The toothless gear 25 meshes with the gear 22, and then the first toothless gear 25 meshes with the gear 22.
is rotated clockwise by the gear 22, so that the second partially toothed gear 27 meshes with the gear 26.
Numeral 30 is a gear shaft connecting gears 26 and 26' which are engaged with racks 11 and 11' fixed to the first slide plate 10. The driving force is transmitted by simultaneously sliding the slide plates 10 in the same direction.

Next, hold the cassette 2 and place it in the cassette holder 7.
Regarding the second slide plate 31 constituting the record carrier storage container holding means that performs the retracting operation, there are a plate spring 34 which is an elastic member attached to the second slide plate 31 and has a free end 34a. , a cassette receiving part 3 which is a cassette receiving member which together with this plate spring 34 constitutes a clamping means.
5, the cassette 2 inserted from the outside is held between the cassette 2 and the free end 34 of the leaf spring 34 by the regulating part 36 which is a position regulating means for the free end 34a of the leaf spring 34 provided at the tip of the cassette holder 7.
the second slide plate 31 until just before a is regulated.
The free end 34 of the leaf spring 34 is moved by manual operation to move it relative to the cassette holder 7.
At the position (first position) immediately before the position a is restricted by the restriction part 36, a cassette insertion detection switch (not shown) is activated (described later with reference to FIG. 7), the loading motor 19 is rotated in the normal direction, and the second A retracting action is applied to move the slide plate 31 relative to the cassette holder 7, and the free end 34a of the leaf spring 34 is regulated by the regulating portion 36 while the cassette holder 7 is moved.
, and applies a pressing force to the cassette 2 to clamp the cassette 2 with a large force.

Reference numeral 32 designates a pin for guiding the sliding of the second slide plate 31 in the direction of arrow A or B, and is mounted on the cassette holder 7. Reference numeral 33 denotes a long groove formed in the second slide plate 31, which has a shape extending in the direction of movement of the cassette holder 7, and the pin 32 described above is engaged with this long groove 33. The leaf spring 34 is attached to the upper tip of the second slide plate 31, and the cassette receiving part 35 is attached to the second slide plate 31.
It is provided at the lower tip of the slide plate 31. This plate spring 34 and the cassette receiving part 3
5 constitute a clamping means, which clamps the cassette 2 inserted between them (FIG. 5). Reference numeral 29 denotes a rack fixed to the second slide plate 31, and a lever 57 is installed on the side surface of the rack, which moves with the sliding movement of the second slide plate 31 in the direction of arrow A or arrow B. It is something. and,
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 are both rotated clockwise. This 29 is meshed with the gear unit 24. The regulating portion 36 is provided at the tip of the cassette holder 7 at a position facing the leaf spring 34, and serves to regulate the position of the free end 34a of the leaf spring 34.

The gear shafts 37, 40, and 41 shown in FIG. and the lever 28, and the gear shaft 41 pivotally supports the gear 23, respectively. In addition,
A retaining ring 38 is provided between the gear unit 24 and the gear shaft 37.

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 and inserts the magnetic sheet 1 through the pad insertion window 6 of the cassette 2.
The contact state between the magnetic head 56 and the magnetic sheet 1, which is closely opposed to the upper surface of the magnetic head and abuts on the lower surface of the magnetic head 56, is stabilized. 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 connects the center core 3 of the magnetic sheet 1 in the cassette 2 to the spindle 53 of the sheet rotation motor 54.
This is a center core pressing member for mounting on. 4
A support shaft 7 rotatably supports the center core pressing member 46, and 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. 48 is an arm bent end 48' (sixth
It is a pin set up in the figure) and is in contact with the direct-acting cam 49. Reference numeral 50 (Fig. 3) denotes a spring, which is stretched between the bent end 48' of the arm of the center core pressing member 46 and a chassis (not shown), and keeps the end 48' where the pin 48 is provided always downward. towards, i.e.
In FIG. 6, the pressing member 46 is urged counterclockwise about the shaft 47.

Figures 4a and 4b show the operating states of the cassette and gears during insertion; in Figure 4a, cassette 2
is inserted into the cassette holder 7 from the direction of arrow C, the tip of the cassette 2 is held between the leaf spring 34 provided on the second slide plate 31 and the cassette receiving part 35, and then the cassette is inserted by hand in the direction of arrow A. 2
Push in. At this point, loading motor 1
9 has not been started yet. 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 the position shown in the figure, 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 toothless gear 25 faces the gear 22, and the gear 22 and the first toothless gear 25 do not mesh with each other.

As for the second partially toothed gear 27, as shown in FIG. The meshing is not performed. Since the loading motor 19 is not activated, the first slide plate 10 does not perform a sliding operation.
Therefore, the pin 12 erected on the side surface of the cassette holder 7 is located above the cam groove 13.

FIG. 5 shows the state of the gear mechanism during driving when the cassette 2 is held between the leaf spring 34 and the cassette receiving part 35, is further pushed in by hand, and then the loading motor 19 is activated to pull in the cassette. .

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, no rotation is imparted to gear 23.
By sliding the second 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 36. The position is regulated downward by the portion 36. That is, the fifth
As shown in the figure, when the free end 34a of the leaf spring 34 is fully retracted, the clamping force against the cassette 2 becomes very large. As mentioned above, the leaf spring 3
At the position (first position) immediately before the free end 34a of the cartridge 4 is restricted by the restriction part 36, a cassette insertion detection switch (not shown) is activated (described later with reference to FIG. 7), and the loading motor 19 stops rotating. Start.

When the loading motor 19 rotates forward, its rotational torque is transferred to the worm gear 20 and the worm wheel 2.
1, is applied to gear 23 via gear 22, and gear 23 rotates clockwise. When the gear unit 24 is rotated counterclockwise due to the clockwise rotation of the gear 23, a one-way clutch provided in the gear unit 24 causes the gear unit 2 to rotate.
4 is transmitted to the rack 29, which causes the second slide plate 3 to be rotated through the rack 29.
1 is further 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. Then, the gear 22 connects the first partially toothed gear 25.
When is rotated clockwise, the second partially toothed gear 27 is also further rotated clockwise,
It meshes with gear 26. Therefore, the rotational torque of the loading motor 19 is transmitted through the worm gear 20, the worm wheel 21, the gear 22, and the first partially toothed gear 2.
5. The signal is transmitted to the rack 11 via the second partially toothed gear 27 and the gear 26, and the first slide plate 10 starts sliding in the direction of arrow A.

Referring to FIG. 6, the structure 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.

Moreover, the center core pressing member 46
By positioning the direct-acting cam 49 fixed on the side surface of the slide plate 10 from the low-lift surface to the high-lift surface, the cam 49 rotates in the direction of arrow D about the rotation center axis 47, as shown by the two-dot chain line. The tip 4 of the center core pressing member 46 is moved from the position shown by the solid line to the position shown by the solid line.
6' applies a pressing force to the center core 3 to force it into the spindle 53 of the seat rotation motor 54.
Then, as the linear-acting cam 49 further moves in the direction of arrow A as shown in FIG. Return to initial position. Note that if the low lift surface on the left side of the high lift surface of the direct-acting cam 49 is made slightly higher than the low lift surface on the right side, the center core pressing member 46 will be placed at a position slightly away from the position indicated by the solid line. It can be held in an elevated position. In this case, the direct-acting cam 49 moves the center core pressing member 4 in the remaining sliding stroke of the first slide plate 10 in the direction A after the cassette holder 7 is lowered to the loading position (second position).
6.

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 carrying out the above-described cassette loading and unloading operations.

In the figure, SW _M is the main switch, which has low resistance.
Connected to power supply +Vcc via _R1 . SW _C
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. A normally open type cassette insertion detection switch is provided to be opened by the second slide plate 31 immediately before engaging with 36 and increasing the clamping _{force .} It is connected to the. SW _L is
For example, the first slide plate 1 shown in FIGS. 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. 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. 2 and 3, and when the second slide plate 31 slides in the direction of arrow B, the free end 34a of the leaf spring 34 is restricted. After the second slide plate 31 is removed from the part 36 and the clamping force is weakened,
This is a normally closed type cassette discharge completion detection switch which is set to be opened by the switch, and is connected in series with the main switch SW _M together with the low resistance _R5 . FF ₁
is set by the potential change from high to low at the connection point between cassette insertion detection switch SW _C and low resistor R ₂ , and then cassette loading completion detection switch SW _L
The first RS flip-flop, _{FF2 ,} is a falling synchronization type connected to be reset by a change in potential from high to low at the connection point between the switch SW _E and the resistor _R4 . is set by a change in potential from high to low at the connection point between cassette ejection completion detection switch SW U and resistor R5, and then reset by a change in potential from high to low at the connection point between cassette ejection completion detection switch SW _U and resistor _R5 . The second RS flip-flop is of falling synchronous type, and the MCC is the first one.
In response to the Q output high level of the second FF ₁ , the loading motor 19 is rotated forward (clockwise in the above example) for loading the cassette, and the Q output of the second FF ₂ is
In response to the high level of the output, the loading motor 19 is reversed (rotated counterclockwise) for ejecting, and in response to the low level of the Q output of the second FF ₂ , the loading motor ₁₉ is caused to go low. Deing motor 19
A motor control circuit configured to stop the motor.

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 normal 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. Then, the Q output becomes low level, and the motor control circuit MCC stops the forward rotation of the loading 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. As a result, the motor control circuit MCC reverses the loading 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 slides in the direction of arrow B, the free end 34a of the leaf spring 34 separates from the regulating part 36, and the cassette 2
When a part of the FF 2 protrudes from the exterior of the recording or playback device, the cassette ejection completion detection switch SW _U is released, so 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 seen 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 switches BR ₁ to _{BR 4} provided on the second slide plate 31 are connected to the second slide plate 31.
When the switch SW C slides in the direction of the arrow A or B, the switch SW C is released at the manual insertion completion position, and when the switch SW _C slides in the direction of the arrow B, the 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 is a flange that has a notch 61 and is integrated with the gear 59. 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 into 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 3 set in the cassette holder 7.
2 along the long groove 33 that is slidably engaged with the
It is slid in the direction of arrow A. At this time, the rack 29 fixed to the second slide plate 31 also moves in the direction of arrow A, but the one-way clutch provided in the gear unit 24 that meshes with the rack 29 applies driving torque to the gear 23. I can't. When the cassette 2 is further pushed in by hand in the direction of arrow A while being held between the leaf spring 34 and the cassette receiving part 35, the free end 34a of the leaf spring 34 moves to the position immediately before being pushed down by the regulating part 36 (the first position).
A cassette insertion detection switch (FIG. 7), not shown, is activated at the position . As a result, the loading motor 19 rotates normally, for example, clockwise. As a result, 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 rotation of the gear 23 is transmitted to the rack 29 by a one-way clutch provided in the gear unit 24, and the rack 29 continues to move in the direction of arrow A. As the rack 29 is moved by the gear unit 24, the second slide plate 31 is slid in the direction of arrow A along the long groove 33 which is slidably engaged with the pin 32. During this process, the restricting portion 36a acts on the free end 34a of the leaf spring 34, thereby increasing the cassette clamping force between the leaf spring 34 and the cassette receiving portion 35.

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 positioned to face each other (Fig. 4 a, b),
Therefore, even if the gear 22 rotates, the first partially toothed gear 25
and the second partially toothed gear 27 do 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, the first partially toothed gear 25 and the second partially toothed gear 27, which are coaxially connected to the lever 28,
Both 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 is also rotated clockwise and meshes with 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.
The other first slide plate 10 is slid in the direction of arrow A, and 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.

Since the second slide plate 31 is engaged and held by a pin 32 set in the cassette holder 7 and a long groove 33 provided in the second slide plate 31, it descends when the cassette holder 7 starts to descend.
At the same time, rack 29 also begins to descend. Rack 29
As the gear unit 24 and the rack 29 are lowered, the gear unit 24 and the rack 29 are disengaged, and the second slide plate 31 stops sliding in the direction of the arrow A. The first slide plate 10 transfers the rotational torque of the loading motor 19 to a worm gear 20, a worm wheel 21 and a gear 22, a first partially toothed gear 25, and a second partially toothed gear 2.
7. Since the rack 11 continues to be fed through the gear 26, it continues to move in the direction of arrow A, and the cassette holder 7 and pad 44 descend, and when they reach the loading position (second position), they stop moving. be stopped.

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 , the gear 22 , the first partially toothed gear 25 , and the second partially toothed gear 27 . This rotational torque of the gear 26 is applied to the gear 26 via the rotating shaft 30, and moves 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, when the high lift surface of the direct drive cam 49 is positioned relative to the pin 48 of the center core pressing member 46, the center core pressing member 46 moves in the direction of arrow D around the central rotation axis 47. The center core 3 rotates from the position shown by the two-dot chain line to the position shown by the solid line, and the tip 46' of the center core pressing member 46 applies a pressing force to the center core 3, thereby press-fitting the center core 3 into the spindle 53 of the seat rotation motor 54. The first slide plate 10 is indicated by the arrow A
By further moving in the direction, the pin 48 is located on the low lift surface of the direct drive cam 49, thereby causing the center core pressing means 46 to rotate in the direction of the arrow E,
It returns to the position indicated by the dotted chain line.

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
Maintain good contact with.

When the first slide plate 10 reaches the sliding end position in the direction of arrow A, a cassette loading completion detection switch (not shown) is activated (FIG. 7), and the rotation of the loading motor 19 is stopped. Thereafter, the sheet rotation motor 54 is rotated to rotate the magnetic sheet 1, and the magnetic head 56 performs recording or reproduction on the magnetic sheet 1. During recording or 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 Ejecting Operation) When the unillustrated eject key or the like is operated, the rotation of the sheet rotation motor 54 is stopped, and the unillustrated eject switch (FIG. 7) is operated, and the loading motor 19 is activated when the cassette is loaded. Rotation is started in the opposite direction to the rotation direction, for example, counterclockwise. When the loading motor 19 rotates counterclockwise, the worm wheel 21 and gear 22 rotate clockwise via the worm gear 20. 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. As the gear 23 rotates counterclockwise, the gear unit 24 rotates clockwise. Further, the counterclockwise rotation of the second partially toothed gear 27 is transmitted to the gear 26, and the gear 26 is rotated clockwise. As the gear 26 rotates clockwise, the rack 11 starts moving in the direction of arrow B, and the first slide plate 10 similarly starts sliding in the direction of arrow B. And with this, first of all,
The core pressing member 46 is configured so that the pin 48 is moved by the linear cam 49 as the linear cam 49 moves in the direction of arrow B.
Because it is located from the low lift surface to the high lift surface of
The pin 48 rotates in the direction of arrow D from the position shown by the dotted chain line to the position shown by the solid line, and then continues to move in the direction of arrow B, so that the pin 48 is located on the low lift surface of the linear movement cam 49. , returns to the position indicated by the two-dot chain line.

After that, the pin 14 planted on the side surface of the cassette holder 7 and the pin 17 planted on the side surface of the pad 44 are inserted into the long grooves 9 and 16 provided on the side plate 8.
Then, guided by the cam grooves 13 and 18 provided in the first slide plate 10, the cassette holder 7 and the pad 44 start to rise.

In this way, as the first slide plate 10 slides 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 also rises. When the gear 26 rotates clockwise and the second gear 27 rotates counterclockwise, the second partially toothed gear 27 rotates in the second position.
is released by the toothless part of the toothless gear 27, and the gear 2
The transmission of the drive torque to the first
The slide plate 10 stops its slide.

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. Furthermore, since the gear unit 24 is provided with a one-way clutch, the gear unit 24 is equipped with a one-way clutch.
In order to move the one-way clutch in the direction of arrow B, the idling torque of this one-way clutch will be used, but this should be done taking into consideration the weight of the cassette 2, the frictional load between the second slide plate 31 and the cassette holder 7, etc. With this design, rotational torque can be applied 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 has fully protruded from the exterior part of the recording or reproducing apparatus (not shown), a cassette ejection/loading completion detection switch (not shown) is activated, whereby the rotation of the loading motor 19 is stopped and the cassette 2 is removed. The ejection operation is completed.

In the cassette loading device constructed in this manner, the loading motor 19 starts rotating at a position immediately before the cassette 2 is inserted and the free end 34a of the leaf spring 34 is restricted by the restriction part 36 of the cassette holder 7. The loading motor 19 is activated at the position of the cassette 2 at the time of recording and at the position where the cassette 2 is fully ejected from the exterior of the recording or reproducing device.
The position of the cassette 2 when the rotation of the cassette 2 is stopped is different.

With this positional relationship, the retracting operation starts with the cassette 2 fully pushed in, and when ejecting the cassette 2, it is easy to pick it up by hand, thereby preventing excessive force from being applied to the cassette holder 7. Therefore, the damage can be prevented.

(Effects) As explained above, according to the present invention, when inserting the record carrier storage container, the record carrier storage container is held between the holding means having the elastic member and the container receiving part, and the elastic member is restricted by the restriction means. By manually pushing the record carrier until it is pushed in, and then applying a retracting action to the clamping means by the drive means, a pressing force is applied to the elastic member at this time to increase the clamping force against the record carrier storage container. Even though the manual operation force required when inserting the carrier storage container is small, it is possible to grip the record carrier storage container with sufficient force, so that the record carrier storage container can be reliably and safely placed in a predetermined position. Therefore, the insertion operation of the record carrier storage container becomes smooth, and there is no risk of damaging the record carrier storage container.

[Brief explanation of the drawing]

Fig. 1 is an explanatory view of the cassette insertion operation by a conventional device. Fig. 1a is a side view of the cassette and cassette holder before insertion, Fig. 2b is a side view of the cassette and cassette holder after insertion, and Fig. 2 is a side view of the cassette and cassette holder. 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, FIG. 4a is a side view of the cassette and gear mechanism when the cassette is inserted, and FIG. A side view of the second toothless gear and a part of the gear train, FIG. 5 is a side view of the inserted cassette and the gear mechanism during driving, and FIG. 6 is a side view of the center core pressing member in the initial position and loading position. Side sectional view with pads,
Figure 7 is a control circuit diagram for the loading motor that performs cassette loading and unloading operations, Figure 8 is a configuration diagram of the cassette insertion detection switch and cassette ejection completion detection switch, and Figure 9 is a diagram of the one-way clutch provided in the gear unit. A perspective view of one specific example is shown. 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, 26 are gears, 24 is a gear unit equipped with a one-way clutch, 25 is a first toothless gear, 27 is a second toothless 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.
The grooves 34 and 35 provided in the slide plate of
A leaf spring and a cassette receiving part are provided on the slide plate, 36 is a position regulating part provided on the cassette holder 7, 48 is a pin, and 49 is a linear cam.

Claims (1)

[Claims] 1. A recording or reproducing apparatus loaded with a record carrier storage container for use, comprising a container clamping means for elastically clamping the record carrier storage container, a control means for controlling the container clamping force of the container clamping means, and the container. a drive means for moving the clamping means in the container insertion direction, and the control means is configured to vary the clamping force of the clamping means with respect to the record carrier storage container in the process of movement in the container insertion direction. Storage container loading device.