JPH10134465A - Clamp mechanism for disk reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a shock at the time of an unclamping operation. SOLUTION: A reproducing unit chassis 30 is supported in a floading state via elastic members 32 and 33 by a frame 31. A movable member 38 is movably supported by the frame 31, and by pressing the reproducing unit chassis 30 with the movable member 38, the elastic members 32 and 33 are distorted to lower the reproducing unit chassis 30 into its unclamping state, and then by separating the movable member 38 from the reproducing unit chassis 30, the reproducing unit chassis is raised by elastic force of the elastic members 32 and 33 to become its clamping state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp mechanism for a disc reproducing apparatus, and more particularly to a disc clamp mechanism suitable for a disc reproducing apparatus with a changer.

[0002]

2. Description of the Related Art FIG. 12 shows an example of a clamp mechanism of a conventional disk reproducing apparatus. The rotating frame 70 shown in FIG. 12 supports the reproducing unit chassis 30 in a floating state via the elastic members 32, 32, and the coil springs 33, 33,. The reproduction unit chassis 30 supports a disk motor to which an optical pickup and a turntable 30a are fixed, and constitutes a reproduction unit. Clamper holder 31a
Is clamped to the frame 31 and supports the clamper 37 including the yoke 34, the magnet 35, and the magnet holder 36 with play at a position facing the turntable 30a.

The rotating frame 70 has its shafts 70a, 70a
The other shafts 70b, 70b of the rotating frame 70 are slidably supported by the frame 31 via slanting grooves 39b, 39b of the clamp slider 39 slidably supported in the front-rear direction. Is inserted.

The clamp slider 39 is provided with a rack 39a, and the rack 39a meshes with a gear 72 rotatably supported by the frame 31. The gear 72 is rotated by a motor 71 supported by the frame 31 via a speed reduction mechanism. The rotation frame 70 is rotated via the clamp slider 39 by the rotation of the motor 71.

When the rotating frame 70 rotates, the reproducing unit chassis 30 supported by the rotating frame 70 via the elastic member 32 and the coil spring 33 also rotates. When the playback unit chassis 30 is rotated upward,
The disc transported onto the turntable 30a by a transport mechanism (not shown) is lifted by the turntable 30a, and the disc is clamped by the clamper 37 and the turntable 30a to enter a reproducing state. When the playback unit chassis 30 is rotated downward, the disc is unclamped.

[0006]

In the conventional apparatus described above, the reproducing unit chassis 30 is supported by the rotating frame 70 via the elastic member 32 and the coil spring 33, so that the rotating frame 70 rotates downward. When moving, the reproducing unit chassis 30 stops upward for a while due to the attraction force between the turntable 30a and the clamper 37, and the elastic member 32 and the coil spring 33 are deformed. When the elasticity of the elastic member 32 and the coil spring 33 increases, the turntable 30a separates the clamper 37 and the reproducing unit chassis 30 rotates downward.
2 and the spring force of the coil spring 33 causes a problem.

In the case of a disc reproducing apparatus with a changer, the frame 31 is raised and lowered so as to match the height of the disc to be reproduced.
Since one and two frames are required in addition to the main chassis, there is a problem that the number of components increases and the mechanism becomes complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide a clamp mechanism of a disk reproducing apparatus in which an unclamping operation is performed without an impact.

Another object of the present invention is to provide a clamp mechanism for a disk reproducing apparatus which has a simplified mechanism when applied to a disk reproducing apparatus with a changer as compared with the conventional apparatus.

[0010]

According to the present invention, there is provided a clamp mechanism of a disk reproducing apparatus in which a reproducing unit chassis is supported in a floating state with respect to a frame via an elastic member, and the reproducing unit chassis is supported by the frame. In a clamp mechanism for separating from and coming into contact with a clamper, a movable member is movably supported on a frame, and the movable member presses the playback unit chassis to deflect the elastic member to lower the playback unit chassis to an unclamped state. When the movable member moves away from the reproduction unit chassis, the reproduction unit chassis is raised by the elastic force of the elastic member to be in a clamped state.

Further, in the clamping mechanism of the disk reproducing apparatus, the movable member or the slider for driving the movable member is biased by a spring to balance the driving force of the clamping operation and the unclamping operation.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk reproducing apparatus with a disk changer according to an embodiment of the present invention will be described with reference to the drawings. First, with reference to FIG. 1, an outline of the configuration of the disc reproducing apparatus according to the embodiment will be described. The disc tray in FIG. 1 is provided with a recess on the upper surface for mounting a disc, and is supported movably in the horizontal direction. The disk tray is transported by a first transport means between a first position, which is a disk storage position, and a second position outside the apparatus, and is transported by the second transport means between the first position and a third position, which is a disk playback position. Transported by

The reproducing means is moved up and down by the first positioning means so as to match the height of an arbitrary disc tray.
The first transfer means and the second transfer means are moved up and down by the second positioning means so as to match the height of an arbitrary disc tray.

The first transfer means and the second transfer means are selectively driven by a first drive means, and the first positioning means and the second positioning means are selectively driven by a second drive means.

The clamp means for clamping the disc to the turntable of the reproducing means is driven by a stroke after the second transfer means transfers the disc tray to the third position. The clamping means presses or separates the reproduction unit chassis supported by the frame of the reproduction means via an elastic member in a floating state, thereby bringing the disc into an unclamped state or a clamped state.

Next, the construction of each of the above-mentioned means and the clamping means will be described with reference to an exploded perspective view separately shown in FIGS. The directions of XYZ shown in the figures are common in each figure.
The X direction is the forward direction, that is, the direction in which the disc tray 2 projects from the housing. The center lines connected in the respective drawings are denoted by the same reference numerals.

A main chassis 1 shown in FIG. 2 supports the entire apparatus. Also, the holes 2a, 2a of the disc trays 2, 2,.
a penetrate the rods 1a, 1a shown in FIG. 3, and the disc trays 2, 2... are supported by the rods 1a, 1a. The bracket 1d and the guide member 1b for fixing the rods 1a, 1a.
It is fixed to.

The recess 2b provided in the disc tray 2 is a protrusion 3a of the tray open / close rack 3 shown in FIG.
Alternatively, it can be engaged with any one of the protrusions 5a of the slider 5 supported by the loading rack 4. The tray open / close rack 3, the loading rack 4, and the slider 5 are the transfer means holder 6 shown in FIGS. 5 and 6A.
And 7 are slidably supported in the X direction.

The transfer means holders 6 and 7 are fastened so as to sandwich these racks and sliders, and are supported by the main chassis 1 so as to be vertically movable. The starting rack 8 is slidably supported by the transfer means holders 6 and 7 in the X direction. The gear 9 is rotatably supported by the transfer means holders 6 and 7, and can mesh with the tray open / close rack 3, the loading rack 4, and the starting rack 8, as shown in FIG.

The shafts 6a, 6a of the transfer means holder 6 are inserted into stepped grooves 10a, 10a of a slider 10 (shown in FIG. 5) which is slidably supported on the main chassis 1 in the X direction. Is moved up and down by the movement in the X direction. The gear 9 is always meshed with the final gear 11 having a wide tooth width rotatably supported by the main chassis 1 shown in FIG. 2 even when the transfer means holders 6 and 7 are moved up and down.
The final gear 11 is rotated by a motor 12 supported by the main chassis 1 and a reduction mechanism. Motor 12
The speed reduction mechanism, the final gear 11 and the gear 9 constitute first driving means. Returning to FIGS. 5 and 6, the drive units of the tray open / close rack 3, the loading rack 4, and the starting rack 8 will be described. The lock arm 13 is rotatably supported by the tray open / close rack 3, and the lock arm 13 Shaft 13a is inserted through the arc-shaped groove 3b of the tray open / close rack 3 and is engaged with the J-shaped groove 6b of the transfer means holder 6. The shaft 13b of the lock arm 13 is provided with an arc-shaped notch 8 of the starting rack 8.
a can be engaged.

The lock arm 14 is connected to the loading rack 4
, Which is rotatably supported by the shaft 1 of the lock arm 14.
4a is inserted through the arc-shaped groove 4a of the loading rack 4 and is engaged with the J-shaped groove 7a of the transfer means holder 7. The shaft 14b of the lock arm 14 is provided with the arc-shaped notch 8 of the starting rack 8.
b.

The lock arm 15 is rotatably supported by the slider 5. The shaft 15a of the lock arm 15 engages with the J-shaped groove 7b of the transfer means holder 7, and the arc of the loading rack 4 is formed. It can be engaged with the shape notch 4b.

The micro switch 16 is provided for the transfer means holder 6.
, And detects the + X direction movement end position (tray open position) of the tray open / close rack 3. The micro switch 17 is fixed to the transfer means holder 6 and is operated by the slider 5 and the lever 21.
The end position of the tray open / close rack 3 in the −X direction (tray close position) and the + position of the loading rack 4
The X-direction movement end position (unloading position) is detected. The microswitch 18 is fixed to the transfer means holder 6 and detects the -X direction movement end position (loading position) of the loading rack 4.

The micro switch 19 is connected to the main chassis 1
, And detects the + X direction end position of movement of the slider 10 (the home position, which is the uppermost position of the transfer means holders 6 and 7). The micro switch 20 is fixed to the main chassis 1, and the protrusion 10 of the slider 10
The movement distance of the slider 10 is counted by operating the lever 22 operated by b and 10b. Based on the output signals of the microswitches 19 and 20, the control device detects the height of the transfer means holders 6 and 7.

The disk guide 23 shown in FIG. 3 is supported on the main chassis 1 so as to be movable up and down.
4 upwardly. Shaft 2 on bracket 1d
The lever 25 rotatably supported via 6 presses the shafts 23a of the disk guide 23 and lowers the disk guide 23. The lever 25 is a slider 1 shown in FIG.
It is rotated by the boss 10c of 0. Disc guide 23
Is lowered as the transfer means holders 6 and 7 are lowered. The position of the disk guide 23 coincides with the center hole of the disk on the tray at the position shown in FIG. 1 (the first position which is the disk storage position), and the disk guide 23 is inserted into the disk to prevent the disk from being displaced. .

The locking members 27 are supported by the bracket 1d so as to be movable in the Y direction, and are urged in the -Y direction by a leaf spring 28 attached to the bracket 1d. The locking members 27, 27... Are driven one by one in the + Y direction in order from the top by the movement of the transfer means holder 7 in the −Z direction by the projection of the transfer means holder 7 (not shown in FIGS. 5 and 6). Is done. The locking members 27, 27,... Lock the recess 2c (shown in FIG. 2) of the disc tray 2 normally, but the protrusion 3a or the slider 5 of the tray open / close rack 3 is driven in the + Y direction. Protrusion 5
When a is engaged with the recess 2b of the disc tray 2, the engagement between the recess 2c of the disc tray 2 and the locking member 27 is released. That is, the locking member 27
The disc tray 2 disengaged from the disc tray 2 is the projection 3a of the tray open / close rack 3 or the projection 5 of the slider 5.
a to engage with a. Locking member 27,
27 prevent the disc tray 2 from being displaced.

The frame 31 shown in FIG. 4 supports the reproduction unit chassis 30 in a floating state via an elastic member. FIG. 9 shows the supporting state of the reproduction unit chassis 30 in detail. The reproduction unit chassis 30 supports a disk motor to which an optical pickup and a turntable 30a are fixed, and constitutes a reproduction unit. Two portions at the rear end (−X direction in FIG. 4) of the reproduction unit chassis 30 are fastened to the frame 31 with screws via the elastic member 32, and two portions at the front end are the elastic member 32 and the coil spring 33.
And is urged in the Z direction to be supported.

The clamper holder 31a is fastened to the frame 31, and supports a clamper 37 composed of a yoke 34, a magnet 35, and a magnet holder 36 with play at a position facing the turntable 30a.

The clamp arm 38 is rotatably supported on the frame 31 by its shaft 38a, and the shafts 38c, 38c of the clamp arm 38 extend above and below the front end of the reproduction unit chassis 30. The clamp slider 39 is supported by the frame 31 so as to be slidable in the front-rear direction, and a shaft 38b of the clamp arm 38 is inserted into an oblique groove 39b provided therein.

The elevating slider 41 shown in FIG. 4 is slidably supported by the main chassis 1 in the X direction, and a rotary member 42 (see FIG. 4) rotatably supported by the main chassis 1 in an elongated hole 41b extending in the Y direction. 2) (shown in FIG. 2)
Is inserted. The shafts 31b, 31b,... Of the frame 31 pass through the stepped grooves 41a, 41a,. The frame 31 is driven in the vertical direction (Z direction) by the movement of the lifting slider 41 in the X direction.

The levers 43 and 44 shown in FIG.
5 is pressed against the cam 42b of the rotating member 42.
Microswitches 46 and 47 are arranged to be actuated by levers 43 and 44, respectively. Rotating member 4
2 rotates in one direction, the frame 31 is moved up and down via the elevating slider 41 so as to be adjusted to the respective heights of the disc tray 2. The height of the frame 31 is detected by the outputs of the micro switches 46 and 47. Is done.

The clamp slider 39 shown in FIG. 4 is provided with a rack 39a, and the rack 39a always meshes with a gear 40 rotatably supported by the main chassis 1. The clamp slider 39 moves up and down together with the frame 31, but the tooth width of the gear 40 is wide and the clamp slider 3
The mesh does not come off regardless of the ascent and descent of 9.

An impeller 48 having a partial gear 48a meshing with the gear 40 is rotatably supported by the main chassis 1,
It is rotated by the protrusion of the loading rack 4 described with reference to FIGS. 5 and 6 (a rear portion of the loading rack is formed to extend in the −Y direction and is not visible in FIGS. 5 and 6). A torsion coil spring 49 is pressed against a prismatic portion 48b provided at a lower portion of the impeller 48, and the rotating position of the impeller 48 is maintained even when the projection of the loading rack 4 is lifted and disengaged from the impeller 48. It is.

The impeller 48 rotates the reproducing unit chassis 30 via the gear 40, the clamp slider 39, and the clamp arm 38, and performs a disk unclamping operation as described later. The tray 2 is driven by a stroke after being transferred to the reproduction position.

A slider 50 slidably supported by the frame 31 and driven by the clamp arm 38 is rotatably supported by the main chassis 1 and rotates a lever 51 biased by a tension coil spring 52. The lever 51 activates the micro switch 53, and the clamp state is detected by the output of the micro switch 53.

Next, with reference to FIG. 2 and FIG. 5, the drive of the rotating member 42 and the slider 10 will be described. As shown in FIG. 2, a gear 42c is formed on the outer periphery of the rotating member 42, and the slider 10 shown in FIG.
Are formed. The pitch line of the irregularly shaped rack 10d has a shape in which circular arcs are smoothly connected in a straight line. The slider 10 has a guide groove 10e and an arc-shaped groove 10 along the odd-shaped rack 10d.
f is formed.

When the slider 10 is at the end of movement in the X direction, the locking member 54 is supported by the main chassis 1 so as to be able to protrude into the arc-shaped groove 10f. The torsion coil spring 55 urges the locking member 54 in the counterclockwise direction (the rush direction) in FIG.

The gear 56 shown in FIG. 2 is rotatably supported by the main chassis 1 and is driven to rotate by a motor 57 fixed to the main chassis 1 via a reduction mechanism. A shaft 59 press-fitted into a swing arm 58 rotatably supported coaxially with the gear 56 rotatably supports a pendulum gear 61. The pendulum gear 61 is always meshed with the gear 56. The conical spring 60 interposed between the step of the shaft 59 and the pendulum gear 61 causes the pendulum gear 61 to swing the swing arm 5.
8 and generate frictional force. Due to this frictional force, the swing arm 58 receives a driving force in the rotation direction of the gear 56.

With this driving force, the swing arm 58 rotates, and the pendulum gear 61 meshes with one of the gear 42c of the rotating member 42 and the odd-shaped rack 10d of the slider 10. When the pendulum gear 61 is engaged with the gear 42c, the swing arm 58 receives a clockwise driving force when viewed from above,
The pendulum gear 61 rotates counterclockwise, and the rotating member 42 rotates clockwise.

When the motor 57 is reversed from this state,
The swing arm 58 rotates counterclockwise, and the pendulum gear 6
Numeral 1 meshes with the arc portion of the odd-shaped rack 10d of the slider 10. At this time, the shaft 59 enters the guide groove 10e of the slider 10. In this way, the pivoting position of the swing arm 58 is regulated by the engagement between the shaft 59 and the guide groove 10e and the engagement between the pendulum gear 61 and the deformed rack 10d. The clockwise rotation of the pendulum gear 61 further rotates the swing arm 58 counterclockwise. At this time, the shaft 58a of the swing arm 58 rotates the locking member 54 to engage with the slider 10. Release.

When the pendulum gear 61 comes into mesh with the linear portion of the odd-shaped rack 10d, the slider 10 is moved in the upper left direction (-X direction) in FIG. When the pendulum gear 61 is engaged with the linear portion of the odd-shaped rack 10d, the rotation of the swing arm 58 is restricted, and the forward and reverse rotation of the motor 57 causes the slider 10 to be sent in both directions. The clockwise rotation range of the swing arm 58 is the main chassis 1
Of the pendulum gear 61 due to the friction torque applied to the swing arm 58.
Is prevented from biting into the gear 42c of the rotating member 42.

The second driving means is constituted by the motor 57, a reduction mechanism for reducing the rotation thereof, and the gear 56. The second driving unit drives the first positioning unit including the slider 10 and the second positioning unit including the rotating member 42 and the elevating slider 41.

Next, the operation of the tray open / close rack 3, the loading rack 4, and the starting rack 8 will be described with reference to FIGS. FIG. 7 in the initial state
As shown in (a) and (A), the gear 9 is connected to the starting rack 8.
Only, and tray open close rack 3
And it does not mesh with the loading rack 4. When the gear 9 rotates clockwise in FIG. 7A, the starting rack 8 is fed rightward.

While the starting rack 8 is fed rightward, the shaft 13b of the lock arm 13 is pulled into the arc-shaped notch 8a of the starting rack 8, and the lock arm 13 is rotated clockwise. Then, the shaft 13a of the lock arm 13 moves in the J-shaped groove 6b of the moving means holder 6, and enters the straight portion of the J-shaped groove 6b. At the same time, the shaft 13b enters the inside of the arc-shaped notch 8a, so that the starting rack 8 and the tray open / close rack 3 move integrally.

FIGS. 7 (b), 7 (B) to 7 (d), and 7 (D) show a state where the tray open / close rack 3 is being fed. When the starting rack 8 is sent to the right along with the tray open / close rack 3, the engagement with the gear 9 is released, but the tray open / close rack 3 is engaged with the gear 9, and the tray 9 is opened by the bidirectional rotation of the gear 9. The closed rack 3 is sent in both directions.

When the gear 9 is rotated clockwise as viewed from above, the tray open / close rack 3 is moved from the position shown in FIG. 7A to the position shown in FIG. It is returned to the position shown in FIG. The movement of the tray open / close rack 3 moves the disk tray 2 between a storage position and a position outside the apparatus.
The tray open / close rack 3 constitutes a first transfer unit.

FIG. 8 shows the initial state (FIG. 8 (a) and FIG.
2A shows a state where the gear 9 rotates counterclockwise. In the initial state, the gear 9 is engaged only with the starting rack 8 and not engaged with the tray open / close rack 3 and the loading rack 4 as described above. Gear 9 is shown in FIG.
Is rotated counterclockwise, the starting rack 8 is fed to the left.

While the starting rack 8 is fed to the left, the shaft 14b of the lock arm 14 is pulled into the arc-shaped notch 8b of the starting rack 8, and the lock arm 14 is rotated clockwise. Then, the shaft 14a of the lock arm 14 moves in the J-shaped groove 7a of the moving means holder 7 and enters the straight portion of the J-shaped groove 7a. At the same time, the shaft 14b enters the inside of the arc-shaped notch 8b, and the starting rack 8 and the loading rack 4 move integrally.

FIGS. 8 (b), 8 (B) to 8 (d), and 8 (D) show a state where the loading rack 4 is being fed. Starting rack 8 with loading rack 4
Is disengaged from the gear 9 when it is sent to the left, but the loading rack 4 is engaged with the gear 9, and the loading rack 4 is sent in both directions by the bidirectional rotation of the gear 9.

By rotating the gear 9 counterclockwise, the loading rack 4 is moved from the position shown in FIG. 8A to the position shown in FIG. 8D, and the clockwise rotation of the gear 9 causes the loading rack 4 to rotate as shown in FIG. It is returned to the position shown in a). In the state shown in FIGS. 8A and 8B, the slider 5 is locked to the loading rack 4 by the lock arm 15.
8 (c), the shaft 15a of the lock arm 15 is guided by the J-shaped groove 7b of the transfer means holder 7 and the lock arm 15 rotates clockwise, as shown in FIG. 15a is loading rack 4
Out of the arc-shaped notch 4b of the loading rack 4
And the slider 5 is released from the locked state. The loading rack 4 can move further leftward while leaving the slider 5.

FIGS. 8D and 8D show a state where the loading rack 4 has moved to the left end of the movement. When the locked state between the loading rack 4 and the slider 5 is released, the shaft 15a is restricted by the edge of the loading rack 4, and the lock arm 15 does not rotate. The movement of the shaft 15a in the left-right direction is restricted by the J-shaped groove 7b, and the slider 5 is stopped.

The protrusion 5a of the slider 5 described above is engaged with the recess 2b of the disk tray 2, and the slider 5 transfers the disk tray 2 between the storage position and the disk reproduction position. The slider 5, the loading rack 4 and the lock arm 15 constitute a second transfer unit. The loading rack 4 moves further to the left while the slider 5 remains, but the movement of the loading rack 4 drives the clamping means as described above.

Next, the disk clamp / unclamp operation will be described with reference to FIGS.
Although the details of the clamp slider 39 are not shown in FIG. 4, as shown in FIGS.
An L-shaped groove 39c extending in the X-direction and the Y-direction is provided on the protrusion on the upper part of 9. The torsion coil spring 62 mounted on the frame 31 enters the L-shaped groove 39c and presses the clamp slider 39 in the X and Y directions.

As described above, the clamp slider 39
Is rotated in the X direction to rotate the clamp arm 38,
The unclamping or clamping operation is performed by pressing or releasing the reproduction unit chassis 30. Specifically, when the clamp slider 39 moves in the + X direction, the disk is unclamped, and when the clamp slider 39 moves in the -X direction, the disk is clamped. FIGS. 11C and 11F show the disk clamp state. At this time, the turntable lifts the disk from the disk tray (not shown in FIG. 11C) and clamps the disk. FIG.
(A) and (d) show the disk unclamped state. FIGS. 11B and 11E show the state in the middle.

The reproduction unit chassis 30 includes a frame 31
However, since the reproducing unit chassis 30 is directly driven by the clamp / unclamp operation, the turntable is separated from the clamper after the elastic member is elastically deformed while the turntable is attracted to the clamper. There is no occasional shock. When the clamp / unclamp operation is performed by driving the frame, an impact occurs when the turntable moves away from the clamper.

The load on the clamp arm 38 differs between the clamp operation and the unclamping operation. That is, the clamping force of the clamper and the elastic force of the coil spring 33 act in the rotating direction of the clamp arm 38 during the clamping operation, but act in the opposite direction during the unclamping. Thus, the load on the clamp arm 38 is unbalanced, but the load on the clamp slider 39 is balanced by the action of the torsion coil spring 62.

In the clamp state shown in FIG. 10D, the torsion coil spring 62 does not apply a force in the X direction (unclamping operation direction) to the clamp slider 39. While the clamp slider 39 moves to the position shown in FIG. 10C, the load is not so large, but after this point, the load rapidly increases.

At this time, the torsion coil spring 62 applies a large force in the moving direction of the clamp slider 39, and the load for driving the clamp slider 39 is balanced. At the time of the clamping operation, the torsion coil spring 62 increases the load on the clamp slider 39, but the elastic force of the coil spring 33 acts as a driving force on the clamp slider 39, and reduces the load on the torsion coil spring 62.

Next, a description will be given of a disk storage operation, a disk loading operation, a disk exchange operation and the like. When a disc is to be stored in the apparatus, the moving means holders 6 and 7 are moved up and down in the initial state in which the loading rack 4 is in the forward position (the end of movement in the + X direction) and the tray open / close rack 3 is in the retracted position. The projection 3a of the rack 3 is adjusted to an arbitrary height of the disc tray 2, and the tray open / close rack 3 is advanced to make the disc tray 2 protrude outside the housing. Then, the disc is placed on the disc tray 2 and the disc tray 2 is pulled into the housing.

When loading a disk, the moving means holders 6 and 7 are raised and lowered in the initial state, and the slider 5
5a is adjusted to an arbitrary height of the disc tray 2, the loading rack 4 is moved backward, and the disc tray 2 is moved to the reproduction position. By retreating the loading rack 4 further, the disc is clamped, and a reproducing state is set.

When replacing a disk on another disk tray in the storage position in the reproducing state, first, the moving means holders 6 and 7 are raised to remove the projection of the loading rack 4 from the impeller 48. At this time, the protrusion 5a of the slider 5 comes off from the recess 2b of the disc tray 2. However, at the time of clamping, the projection 38d of the clamp arm 38 is inserted into the square hole 2d of the disc tray 2, so that the position of the disc tray 2 is Regulated.

Thereafter, the loading rack 4 is advanced to the initial position. It is clear from the above description that the disc can be exchanged on any disc tray in this state. In this manner, the discs on the disc tray other than the disc tray on which the disc being reproduced can be exchanged during the reproduction of the disc.

[0063]

According to the disk reproducing apparatus of the present invention, the unclamping operation can be performed without any impact since the floating unit chassis is directly driven.

When the present invention is applied to a disc reproducing apparatus with a changer, the number of frames is reduced as compared with the conventional apparatus, and the mechanism is simplified.

[Brief description of the drawings]

FIG. 1A is a plan view for explaining a schematic configuration of a disk reproducing apparatus with a disk changer according to an embodiment of the present invention, and FIG. 1B is a side view thereof.

FIG. 2 is an exploded perspective view showing a part of a disk reproducing apparatus with a disk changer according to an embodiment of the present invention.

FIG. 3 is an exploded perspective view showing another portion of the disc reproducing apparatus.

FIG. 4 is an exploded perspective view showing still another part of the disc reproducing apparatus.

FIG. 5 is an exploded perspective view showing still another part of the disc reproducing apparatus.

FIG. 6 shows a first transfer means and a second transfer means of the disc reproducing apparatus.
FIG. 4 is an exploded perspective view showing a transfer unit.

7 (a) to 7 (d) are side views for explaining the operation of a first transfer means and a second transfer means of the disc reproducing apparatus, and FIGS. 7 (A) to 7 (D) are the same parts. It is a top view.

8 (a) to 8 (d) are side views for explaining the operation of a first transfer unit and a second transfer unit of the disc reproducing apparatus, and FIGS. 7 (A) to 7 (D) are the same parts. It is a top view.

FIG. 9 is an exploded perspective view showing a clamp means of the disc reproducing apparatus.

FIG. 10A is a perspective view showing a portion of the clamp means, and FIGS. 10B to 10D are partial plan views for explaining the operation of the clamp means.

FIGS. 11 (a) to 11 (c) are front views for explaining the operation of the clamping means, and FIGS. 11 (d) to 11 (f) are side views for explaining the operation of the clamping means. is there.

[Explanation of symbols]

1 Main chassis, 1a rod, 1b guide member, 1c top plate, 1d bracket, 1e vertical groove, 1f
Stopper 2 Disc tray, 2a hole, 2b recess, 2c recess, 2d square hole 3 Tray open close rack, 3a protrusion, 3b
Arc-shaped groove 4 Loading rack, 4a Arc-shaped groove, 4b Arc-shaped notch 5 Slider, 5a projection 6 Moving means holder, 6a shaft, 6b J-shaped groove 7 Moving means holder, 7a J-shaped groove, 7b J-shaped Groove 8 Starting rack, 8a, 8b Arc-shaped notch 9 Gear 10 Slider, 10a Stepped groove, 10b protrusion, 1
0c boss, 10d irregular rack, 10e guide groove, 1
0f Arc-shaped groove 11 Final gear 12 Motor 13 Lock arm, 13a, 13b shaft 14 Lock arm, 14a, 14b shaft 15 Lock arm, 15a shaft 16, 17, 18, 19, 20 Micro switch 21, 22, Lever 23 Disk guide 24 Coil spring 25 Lever 26 Shaft 27 Locking member 28 Leaf spring 30 Reproduction unit chassis, 30a Turntable 31 Frame, 31a Clamper holder, 31b Shaft 32 Elastic member 33 Coil spring 34 Yoke 35 Magnet 36 Magnet holder 37 Clamper 38 Clamp arm, 38a , 38b, 38c axes,
38d convex portion 39 clamp slider, 39a rack, 39b
Groove, 39c L-shaped groove 40 Gear 41 Elevating slider, 41a Step-like groove, 41b Slot 42 Rotating member, 42a shaft, 42b cam, 42c
Gears 43, 44 Lever 45 Tension coil springs 46, 47 Micro switch 48 Impeller, 48a Partial gear, 48b Rectangular column 49 Torsion coil spring 50 Slider 51 Lever 52 Tension coil spring 53 Micro switch 54 Locking member 55 Torsion coil spring 56 Gear 57 Motor 58 Swing arm, 58a Shaft 59 Shaft 60 Conical spring 61 Pendulum gear 62 Torsion coil spring

[Procedure amendment]

[Submission date] December 27, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1A is a plan view for explaining a schematic configuration of a disk reproducing apparatus with a disk changer according to an embodiment of the present invention, and FIG. 1B is a side view thereof.

FIG. 2 is an exploded perspective view showing a part of a disk reproducing apparatus with a disk changer according to an embodiment of the present invention.

FIG. 3 is an exploded perspective view showing another portion of the disc reproducing apparatus.

FIG. 4 is an exploded perspective view showing still another part of the disc reproducing apparatus.

FIG. 5 is an exploded perspective view showing still another part of the disc reproducing apparatus.

FIG. 6 shows a first transfer means and a second transfer means of the disc reproducing apparatus.
FIG. 4 is an exploded perspective view showing a transfer unit.

7 (a) to 7 (d) are side views for explaining the operation of a first transfer means and a second transfer means of the disc reproducing apparatus, and FIGS. 7 (A) to 7 (D) are the same parts. It is a top view.

8 (a) to 8 (d) are side views for explaining the operation of a first transfer means and a second transfer means of the disk reproducing apparatus, and FIGS. 8 (A) to 8 (D) are the same parts. It is a top view.

FIG. 9 is an exploded perspective view showing a clamp means of the disc reproducing apparatus.

FIG. 10A is a perspective view showing a portion of the clamp means, and FIGS. 10B to 10D are partial plan views for explaining the operation of the clamp means.

FIGS. 11 (a) to 11 (c) are front views for explaining the operation of the clamping means, and FIGS. 11 (d) to 11 (f) are side views for explaining the operation of the clamping means. is there.

FIG. 12 is an exploded perspective view showing an example of a clamp mechanism of a conventional disk reproducing device.

[Description of Signs] 1 Main chassis, 1a rod, 1b guide member, 1c top plate, 1d bracket, 1e vertical groove, 1f
Stopper 2 Disc tray, 2a hole, 2b recess, 2c recess, 2d square hole 3 Tray open close rack, 3a protrusion, 3b
Arc-shaped groove 4 Loading rack, 4a Arc-shaped groove, 4b Arc-shaped notch 5 Slider, 5a projection 6 Moving means holder, 6a shaft, 6b J-shaped groove 7 Moving means holder, 7a J-shaped groove, 7b J-shaped Groove 8 Starting rack, 8a, 8b Arc-shaped notch 9 Gear 10 Slider, 10a Stepped groove, 10b protrusion, 1
0c boss, 10d irregular rack, 10e guide groove, 1
0f Arc-shaped groove 11 Final gear 12 Motor 13 Lock arm, 13a, 13b shaft 14 Lock arm, 14a, 14b shaft 15 Lock arm, 15a shaft 16, 17, 18, 19, 20 Micro switch 21, 22, Lever 23 Disk guide 24 Coil spring 25 Lever 26 Shaft 27 Locking member 28 Leaf spring 30 Reproduction unit chassis, 30a Turntable 31 Frame, 31a Clamper holder, 31b Shaft 32 Elastic member 33 Coil spring 34 Yoke 35 Magnet 36 Magnet holder 37 Clamper 38 Clamp arm, 38a , 38b, 38c,
Shaft, 38d Convex part 39 Clamp slider, 39a Rack, 39b
Groove, 39c L-shaped groove 40 Gear 41 Elevating slider, 41a Step-like groove, 41b Slot 42 Rotating member, 42a shaft, 42b cam, 42c
Gears 43, 44 Lever 45 Tension coil springs 46, 47 Micro switch 48 Impeller, 48a Partial gear, 48b Rectangular column 49 Torsion coil spring 50 Slider 51 Lever 52 Tension coil spring 53 Micro switch 54 Locking member 55 Torsion coil spring 56 Gear 57 Motor 58 Swing arm, 58a Shaft 59 Shaft 60 Conical spring 61 Pendulum gear 62 Torsion coil spring

Claims (2)

[Claims] 1. A clamp mechanism for supporting a reproduction unit chassis in a floating state with respect to a frame via an elastic member, and moving the movable member to the frame in a clamp mechanism for separating the reproduction unit chassis from a clamper supported by the frame. And the movable member presses the playback unit chassis to deflect the elastic member to lower the playback unit chassis to an unclamped state, and the movable member moves away from the playback unit chassis to release the playback unit. A clamping mechanism of a disc reproducing apparatus, wherein a chassis is raised by an elastic force of the elastic member to be in a clamped state. 2. A clamp mechanism for a disk reproducing apparatus according to claim 1, wherein said movable member or a slider for driving said movable member is urged by a spring to balance a driving force of a clamping operation and an unclamping operation.