JP3460039B2 - Clamp mechanism of disc player - Google Patents

Description

Description BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk reproducing apparatus.
Related to the clamp mechanism of
The present invention relates to a disk clamp mechanism suitable for a disk reproducing device. 2. Description of the Related Art A conventional disk reproducing apparatus has a clamping mechanism.
12 is shown in FIG. The rotating frame 70 shown in FIG.
.. And the elastic member 32, 32.
And supported in a floating state via coil springs 33, 33 ...
I have. The reproduction unit chassis 30 includes an optical pickup and a tag.
Supports the disk motor to which the turntable 30a is fixed.
And constitute a playback unit. Clamper holder 31a
Is fastened to the frame 31, and the yoke 34,
Clamp comprising a unit 35 and a magnet holder 36
Hold play at the position facing the turntable 30a.
I support it. The rotating frame 70 has its shafts 70a, 70a
Is rotatably supported by the frame 31 through the
The other shafts 70b, 70b of the moving frame 70
Clamp slide supported slidably in the longitudinal direction
The oblique grooves 39b, 39b of the die 39 are inserted. A rack 39a is provided on the clamp slider 39.
The rack 39a rotates on the frame 31.
With the gear 72 supported at the moment. Gear 72 is
Through a speed reduction mechanism by a motor 71 supported by the frame 31
And rotated. When the motor 71 rotates, the
The turning frame 70 is turned via the
You. When the rotating frame 70 rotates, the rotating frame 70 rotates.
Arm 70 via an elastic member 32 and a coil spring 33
The supported playback unit chassis 30 is also rotated.
You. When the playback unit chassis 30 is rotated upward,
On the turntable 30a by a transfer mechanism not shown
Turntable 30a lifts the disc transferred to
The clamper 37 and the turntable 30a
The disc is clamped to be in a reproducing state. Play unit unit
When the disk 30 is rotated downward, the disk is unlocked.
Will be SUMMARY OF THE INVENTION [0006]
In this case, the playback unit chassis 30 includes the elastic members 32 and
And supported by the rotating frame 70 via the coil spring 33.
When the rotating frame 70 rotates downward
The suction force between the turntable 30a and the clamper 37
The playback unit chassis 30 stops upward for a while.
The elastic member 32 and the coil spring 33 are deformed. Elastic part
When the elasticity of the member 32 and the coil spring 33 increases,
The playback table is separated from the clamp table 37 by the clamp table 37a.
When the chassis 30 rotates downward, the elastic member 3
2 and an impact due to the elasticity of the coil spring 33
There was a problem. [0007] Further, in a disk reproducing apparatus with a changer,
If it is, adjust the frame 31 to the height of the disc to be played.
The rotating frame 70 and the frame 3
One and two frames are required in addition to the main chassis
The number of components increases the complexity of the mechanism
was there. [0008] The present invention has been made in view of the above points.
The purpose of the
The operation of the disc playback device is performed without impact.
It is to provide a ramp mechanism. Another object of the present invention is to provide a die with a changer.
When applied to disc playback equipment, compared to conventional
Provides a clamp mechanism for a disc playback device that simplifies
It is to be. [0010] Disc playback according to the present invention.
The clamp mechanism of the device flares the playback unit chassis.
Supporting the robot in a floating state via an elastic member.
Place the raw unit chassis on the frame supported by the frame.
In the clamp mechanism for separating from and coming into contact with the lamp,
A movable member is movably supported by the system, and the movable member
By pressing the raw unit chassis, the elastic member
Bend and lower the playback unit chassis to unlock
And the movable member is in the playback unit chassis.
Away from the playback unit chassis
Ascends by the elastic force of the elastic member to be in the clamped state
And before Allowed Different provided on the slider that drives the moving member
The torsion coil spring for pressing each pressure receiving surface in the
Attached to the frame, the torsion coil springs
Clamping by selectively pressing one of the pressure receiving surfaces
Operation and unclamping driving force balanced
It is. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk according to an embodiment of the present invention.
Explanation of the disc player with changer based on the drawings
I do. First, with reference to FIG.
An outline of the configuration will be described. The disc tray in Fig. 1
There is a recess on the top surface for placing the disc,
It is movably supported in the direction. Disc tray
(1) The first position, which is the disk storage position, is
Transferred to and from a second location outside the
Transfer between the first position and the third position which is the disk playback position.
Sent. [0013] The reproducing means can be set at an arbitrary disc tray height.
The first positioning means moves up and down so as to match.
The first transfer means and the second transfer means may be any disc tray.
The second positioning means to adjust to the height
Be dropped. The first transfer means and the second transfer means are
A first positioning unit selectively driven by a first driving unit;
And the second positioning means is selectively provided by a second driving means.
Driven. [0015] The disc is put on the turntable of the reproducing means.
The clamp means for ramping is such that the second transfer means is a disk.
After the tray is moved to the third position,
Be moved. And the clamping means is a frame of the reproducing means.
Unit supported in a floating state through an elastic member
Hold the chassis or release the disc
Unclamp state or clamp state. Next, the structure of each of the above-mentioned means and the clamp means is described.
The configuration will be described with reference to an exploded perspective view separately illustrated in FIGS.
You. The directions of XYZ shown in the figures are common in each figure.
The X direction is the forward direction, that is, the disc tray 2 projects from the housing.
It is the direction to put out. Also, the center connected in each figure
The lines have the same reference numerals. The main chassis 1 shown in FIG.
To support. Also, the holes 2a, 2a of the disc trays 2, 2,.
are inserted through the rods 1a, 1a shown in FIG.
, And the disc trays 2, 2,.
Supported by the guide member 1b so as to be movable in the X direction.
You. A bracket 1d for fixing the rods 1a, 1a.
And the guide member 1b together with the upper plate 1c.
Fixed to. The recess 2b provided on the disc tray 2
Projection 3a of tray open / close rack 3 shown in FIG.
Or, the protrusion of the slider 5 supported by the loading rack 4
It can be engaged with any one of the protrusions 5a. Tray o
Pink rack 3, loading rack 4, and slide
The moving element 5 is a transfer means holder 6 shown in FIG. 5 and FIG.
And 7 are slidably supported in the X direction. The transfer means holders 6 and 7
The main body and the slider are fastened
It is supported by the chassis 1 so that it can move up and down. Starting rack
8 is slidably supported on the transfer means holders 6 and 7 in the X direction.
Have been. Gear 9 rotates on transfer means holders 6 and 7
It is supported freely, and as shown in FIG.
Open-close rack 3, loading rack 4 and
And the starting rack 8 can be engaged. The shafts 6a, 6a of the transfer means holder 6 are main
Slider supported slidably in X direction on chassis 1
10 (shown in FIG. 5) are inserted into step-like grooves 10a and 10a.
And is raised and lowered by the movement of the slider 10 in the X direction.
You. The gear 9 rotates around the main chassis 1 shown in FIG.
Freely supported wide gear final gear 11 and transfer
The means holders 6 and 7 are always meshed even if they move up and down.
The final gear 11 is a motor supported by the main chassis 1.
The rotation is performed by the motor 12 and the speed reduction mechanism. Motor 12
And the speed reduction mechanism and final gear 11 and gear 9
One driving means is constituted. Returning to FIG. 5 and FIG.
Tray open close rack 3, loading rack
4 and the drive unit of the starting rack 8 will be described.
Arm 13 can be freely rotated on the tray open / close rack 3
The shaft 13a of the lock arm 13 is
Insert and move the arc-shaped groove 3b of the open-close rack 3
It is engaged with the J-shaped groove 6b of the feeding means holder 6. Rockua
The shaft 13b of the arm 13 is formed by 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 transferred.
It is engaged with the J-shaped groove 7a of the feeding means holder 7. Rockua
The shaft 14b of the arm 14 is formed with the arc-shaped notch 8 of the starting rack 8.
b. The lock arm 15 is rotatable about the slider 5.
The shaft 15a of the lock arm 15 is supported
Engage with the J-shaped groove 7b of the step holder 7 and load
It can be engaged with the arc-shaped notch 4b of the rack 4.
You. The micro switch 16 is provided for the transfer means holder 6.
Is fixed to the tray open-close rack 3
Detects + X direction movement end position (tray open position)
You. The micro switch 17 is fixed to the transfer means holder 6.
Is operated by the slider 5 and the lever 21,
End position of tray open / close rack 3 in -X direction
(Tray closed position) and loading rack 4 +
Detects X-direction movement end position (unloading position)
I do. Micro switch 18 is fixed to transfer means holder 6
End of the loading rack 4 in the -X direction
Detect the position (loading position). The micro switch 19 is connected to the main chassis 1
At the end position of the slider 10 in the + X direction.
(The home position at the uppermost position of the transfer means holders 6 and 7)
) Is detected. The micro switch 20 is
The projection 10 of the slider 10 is fixed to the chassis 1.
b, operated by the lever 22 operated by 10b,
The moving distance of the rider 10 is counted. Micro switch
Control device by the output signals of the
The position senses the height of the transfer means holders 6 and 7. The disk guide 23 shown in FIG.
And a coil spring 2
4 upwardly. Shaft 2 on bracket 1d
The lever 25 rotatably supported via 6 is a disc
Disc guide for holding shafts 23a, 23a of guide 23
23 is lowered. 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.
Swelling. The position of the disc guide 23 is shown in FIG.
On the tray at the storage position (the first position that is the disk storage position)
And the disc guide 23
Inserting the disc prevents disc displacement.
It is. The locking members 27 are attached to the bracket 1d.
It is supported so that it can move in the Y direction.
It is urged in the −Y direction by the attached leaf spring 28.
You. The locking members 27 are projections of the transfer means holder 7.
(Not visible in FIGS. 5 and 6)
By moving the holder 7 in the −Z direction, one by one from the top
Driven in the + Y direction. Timing that is driven in + Y direction
The locking members 27, 27,.
2c (shown in FIG. 2) is locked.
The protrusion 3a of the closed rack 3 or the protrusion 5 of the slider 5
a is engaged with the recess 2b of the disc tray 2,
Between the recess 2c of the disc tray 2 and the locking member 27
Is released. That is, the locking member 27
Disc tray 2 disengaged from tray open tray
The protrusion 3a of the closed rack 3 or the protrusion 5 of the slider 5
a to engage with a. Locking member 27,
27 prevents the disc tray 2 from being displaced.
You. The frame 31 shown in FIG.
The chassis 30 is supported in a floating state via an elastic member.
You. FIG. 9 shows the support state of the reproduction unit chassis 30 in detail.
Is shown. The playback unit chassis 30 is an optical pickup
Disk mode to which the tape and the turntable 30a are fixed.
And a playback unit. Playback unit
Two places at the rear end of the chassis 30 (the -X direction in FIG. 4)
Are fastened to the frame 31 with screws via the elastic member 32.
The front two parts are an elastic member 32 and a coil spring 33
And is urged in the Z direction to be supported. The clamper holder 31a is fastened to the frame 31.
The yoke 34, magnet 35, magnet
Turn the clamper 37 composed of the holder 36
At the position opposite to the handle 30a with play.
You. The clamp arm 38 is moved by its shaft 38a.
The frame 31 is rotatably supported by the frame 31.
The axes 38c and 38c of the pump arm 38 are
It extends above and below the front end of the chassis 30. Clamp
The slider 39 is slidably supported on the frame 31 in the front-rear direction.
The oblique groove 39b provided in the
The shaft 38b of the pump arm 38 is inserted. The lifting slider 41 shown in FIG.
1 is slidably supported in the X direction and extends in the Y direction.
The main chassis 1 is rotatably supported in the elongated hole 41b.
Shaft 42a of the rotated member 42 (shown in FIG. 2)
Is inserted. The axes 31b of the frame 31 are
2 and the step-like grooves 41a, 41a,.
.. of the main chassis 1 shown in FIG.
You. The frame 31 is moved by the movement of the lift slider 41 in the X direction.
It is driven more vertically (Z direction). The levers 43 and 44 shown in FIG.
A tension coil spring 4 rotatably supported by the chassis 1
5 is pressed against the cam 42b of the rotating member 42.
Microscopically actuated by levers 43 and 44 respectively
Switches 46 and 47 are arranged. Rotating member 4
2 rotates in one direction, so that the
The frame 31 to the height of the disc tray 2
The frame 31 is moved up and down
It is detected by the outputs of the black switches 46 and 47. The clamp slider 39 described with reference to FIG.
A rack 39a is provided, and the rack 39a is
Always meshes with gear 40 rotatably supported by chassis 1
ing. The clamp slider 39 moves together with the frame 31
Although it moves up and down, the gear 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. A partial gear 48a meshing with the gear 40 is provided.
The impeller 48 is rotatably supported by the main chassis 1,
The loading rack 4 described with reference to FIGS.
Projection (extends in the -Y direction at the rear of the loading rack)
(Not visible in FIGS. 5 and 6)
It is turned more. A prism provided at the lower part of the impeller 48
A torsion coil spring 49 is pressed against 48b.
The protrusion of the loading rack 4 rises and moves out of the impeller 48.
Even if it does, the rotation position of impeller 48 is maintained. The impeller 48 is a gear 40 and a clamp slider.
39 and a playback unit via the clamp arm 38
The chassis 30 is rotated, and the disk
Perform the unclamping operation of
After the disc 4 has moved the disc tray 2 to the playback position.
Driven by trokes. The clamp is slidably supported by the frame 31.
The slider 50 driven by the pull arm 38 has a mainshaft.
And supported by a tension coil spring 52.
The energized lever 51 is rotated. Lever 51 is a microphone
Actuate the micro switch 53
The clamp state is detected by the force. Next, referring to FIG. 2 and FIG.
The drive unit 42 and the slider 10 will be described. Shown in FIG.
As described above, a gear 42c is formed on the outer periphery of the rotating member 42.
The slider 10 shown in FIG.
Are formed. The pitch line of the irregularly shaped rack 10d is straight
The shape is such that the arc smoothly continues. Slider 10
Guide groove 10e and arc-shaped groove 10 along irregular-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 main so as to be able to protrude into the arc-shaped groove 10f.
It is supported by the chassis 1. The torsion coil spring 55
The locking member 54 is moved counterclockwise in FIG.
It is energizing. The gear 56 shown in FIG.
It is rotatably supported and fixed to the main chassis 1.
Driven by a motor 57 via a speed reduction mechanism.
You. A swing arm rotatably supported coaxially with the gear 56
The shaft 59 press-fitted into the shaft 58 can freely rotate the pendulum gear 61.
I support it. Pendulum gear 61 always meshes with gear 56
ing. Interposed between the step of the shaft 59 and the pendulum gear 61
The conical spring 60 moves the pendulum gear 61 to the swing arm 5.
8 and generate frictional force. With this frictional force,
The arm 58 receives a driving force in the rotational direction of the gear 56. The swing arm 58 is rotated by this driving force.
The pendulum gear 61 is in contact with the gear 42c of the rotating member 42.
It engages with one of the irregularly shaped racks 10d of the ida 10. Pretend
When the child gear 61 is in mesh with the gear 42c,
The arm 58 receives a clockwise driving force when viewed from above,
The pendulum gear 61 rotates counterclockwise, and the rotating member 42
Rotated clockwise. When the motor 57 is reversed from this state,
The swing arm 58 rotates counterclockwise, and the pendulum gear 6
1 meshes with the arc portion of the odd-shaped rack 10d of the slider 10
Become like At this time, the shaft 59 is a guide groove of the slider 10.
Insert into 10e. In this manner, the rotation of the swing arm 58
The moving position is the engagement between the shaft 59 and the guide groove 10e and the pendulum.
It is regulated by the engagement between the gear 61 and the odd-shaped rack 10d.
Become so. With the clockwise rotation of the pendulum gear 61,
The swing arm 58 further rotates counterclockwise.
At this time, the shaft 58a of the swing arm 58 rotates the locking member 54.
To release the engagement with the slider 10. The pendulum gear 61 is a straight line of the deformed rack 10d.
When the slider 10 comes into engagement with the
Sent in the upper left direction (-X direction). Pendulum gear 61 is different
When meshing with the straight part of the shaped rack 10d,
The rotation of the arm 58 is regulated, and the
By the rotation, the slider 10 is sent in both directions. In addition,
The clockwise rotation range of the arm 58 is the main chassis 1
Of the pendulum gear 61
Pendulum gear 61 due to the friction torque applied to
Is prevented from biting into the gear 42c of the rotating member 42.
You. Motor 57 and deceleration for reducing its rotation
The mechanism and the gear 56 constitute second driving means.
You. The second driving unit is a first driving unit constituted by the slider 10.
Positioning means, the rotating member 42 and the lifting slider 41
And driving the second positioning means. Next, referring to FIG. 7 and FIG.
Open rack 3, loading rack 4, and
The operation of the starting rack 8 will be described. 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. gear
9 rotates clockwise in FIG.
8 is sent to the right. While the starting rack 8 is fed to the right,
The shaft 13b of the arm 13 is an arc-shaped notch of the starting rack 8.
8a and the lock arm 13 rotates clockwise
Is done. Then, the shaft 13a of the lock arm 13 is moved
It moves inside the J-shaped groove 6b of the step holder 6, and the straight portion of the J-shaped groove 6b
to go into. At the same time, the shaft 13b is inserted into the arc-shaped notch 8a.
Start rack 8 and tray open close rack 3
They move together. FIGS. 7 (b), 7 (B) to 7 (d), and FIGS.
Tray open close rack 3 was sent to 7 (D)
It shows the state where it is. Tray open close rack
3 and the starting rack 8 is fed to the right,
Although the mesh is disengaged, the tray open / close rack 3
The gear 9 is in mesh with the gear 9, and
The lay open / close rack 3 is sent in both directions. By rotating clockwise as viewed from above the gear 9,
The tray open / close rack 3 is in the position shown in FIG.
From the position to the position shown in FIG.
The direction is returned to the position shown in FIG. G
The disc is moved by moving the lay-open close rack 3.
The ray 2 is transferred between a storage position and a position outside the apparatus.
The first transfer means is provided by the tray open / close rack 3
It is configured. FIG. 8 shows the initial state (FIG. 8 (a) and FIG.
(The state shown in FIG. 2A), the gear 9 rotates counterclockwise.
The case where it turned is shown. Gear 9 starts in the initial state
Engage with rack 8 only, tray open closed
Rack 3 and loading rack 4 are not meshed
The fact is as described above. Gear 9 is shown in FIG.
When turned in the counterclockwise direction, the starting rack 8 moves to the left.
Sent to While the starting rack 8 is moved to the left,
The shaft 14b of the arm 14 is an arc-shaped notch of the starting rack 8.
8b, the lock arm 14 rotates clockwise
Is done. Then, the shaft 14a of the lock arm 14 is moved
It moves within the J-shaped groove 7a of the step holder 7 and
to go into. At the same time, the shaft 14b is inserted into the arc-shaped notch 8b.
The starting rack 8 and the loading rack 4 move together
I will do it. 8 (b), 8 (B) to 8 (d), and FIG.
8 (D) shows a state where the loading rack 4 is being sent.
Is shown. Starting rack 8 with loading rack 4
Is disengaged from gear 9 when it is fed to the left,
The loading rack 4 is in mesh with the gear 9,
The loading rack 4 is sent bidirectionally by bidirectional rotation.
Can be When the gear 9 is rotated counterclockwise when viewed from above,
The loading rack 4 is viewed from the position shown in FIG.
8 (d) is fed to the position shown in FIG.
As a result, it is returned to the position shown in FIG. FIG. 8 (a)
In the state shown in FIG. 8B and FIG.
15 and is locked to the loading rack 4
It moves together with the loading rack 4, but as shown in FIG.
As shown, the shaft 15a of the lock arm 15 is
When the lock arm 15 is guided by the J-shaped groove 7b of the
When pivoted in the measuring direction, the shaft 15a
Out of the arc-shaped notch 4b of the loading rack 4
The locked state between the slider and the slider 5 is released. Loading
The rack 4 can be moved further to the left while leaving the slider 5
Wear. FIG. 8D and FIG.
This shows a state in which the crack 4 has moved to the left end of the movement.
ing. Locking of loading rack 4 and slider 5
In the released state, the shaft 15a is the loading rack.
4, the lock arm 15 does not rotate. So
The shaft 15a is restricted by the J-shaped groove 7b from moving in the left-right direction.
The slider 5 is stopped. The protrusion 5a of the slider 5 described above is
And the slider 5 is engaged with the recess 2b of the tray 2.
Move the tray 2 between the storage position and the disc playback position.
Send. Slider 5, loading rack 4 and lock
The arm 15 constitutes a second transfer unit. Low
Ding rack 4 is leftward while slider 5 is left.
To move the loading rack 4
The more the clamping means is driven, as described above
It is. Next, referring to FIG. 9, FIG. 10 and FIG.
Next, the disk clamp / unclamp operation will be described.
FIG. 4 does not show details of the clamp slider 39.
However, as shown in FIG. 9 and FIG.
L-shaped groove extending in the X direction and the Y direction on the upper protrusion
39c is provided. It was attached to the frame 31
The torsion coil spring 62 is inserted into the L-shaped groove 39c and clamped.
The slider 39 is pressed 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,
Hold down or open the playback unit chassis 30 to unlock it.
A clamp or a clamp operation is performed. Specifically,
When the ramp slider 39 moves in the + X direction, the disk
Is unclamped and moves in the -X direction,
Is clamped. FIGS. 11 (c) and 11 (f)
This shows a clamp state. At this time turntab
The disc is a disc tray (shown in FIG. 11C).
Not clamped). FIG.
(A) and (d) show the disk unclamped state.
ing. FIGS. 11B and 11E show the state in the middle.
ing. The reproduction unit chassis 30 includes a frame 31
Is supported by an elastic member
Directly driving the playback unit chassis 30 by ramp operation
Because the turntable is attached to the clamper
Is the turntable clamper after the elastic member is elastically deformed?
There is no impact as when leaving. In addition,
The clamp / unclamp operation by driving the
If you do, when the turntable moves away from the clamper
Impact occurs. In the clamping operation and the unclamping operation, the
The load of the pump arm 38 is different. That is, the clamp movement
At the time of operation, the suction force of the clamper and the elasticity of the coil spring 33
Acts in the direction of rotation of the clamp arm 38, but the
Acts in the opposite direction when pumping. Like this
The load on the arm 38 is unbalanced, but the clamp slide
The load of the damper 39 is varied by the action of the torsion coil spring 62.
Is performed. In the clamped state shown in FIG.
The coil spring 62 is in the X direction with respect to the clamp slider 39.
Direction (unclamping operation direction) is not applied. Kula
The slider 39 moves to the position shown in FIG.
The load is not so large during this time, but after this point the load
Increase rapidly. At this time, the torsion coil spring 62 is clamped.
A large force is applied in the moving direction of the slider 39.
The load for driving the clamp slider 39 varies.
Sensation. During the clamp operation, the torsion coil spring 62 is
The load on the ramp slider 39 is increased, but the coil spring
The elasticity of 33 is a driving force for the clamp slider 39.
To reduce the load due to the torsion coil spring 62.
You. Next, disk storage operation, disk loading
A description will now be given of a switching operation, a disk exchange operation, and the like. Dress
When storing discs in the loading
4 is the forward position (+ X direction end of movement), tray open
In the initial state with the rose rack 3 in the retracted position,
Raise and lower the moving means holders 6 and 7, and open the tray open claw.
The protrusion 3a of the slack 3 is set at an arbitrary height of the disc tray 2.
Tray open close rack 3 forward
The disc tray 2 is made to protrude out of the housing. And this
Disk tray on disk tray 2
Let the body retract. When loading a disc,
In the initial state, the moving means holders 6 and 7 are raised and lowered, and
5a to the height of the disc tray 2
The disc tray 2 to the playback position
Move to Lower the loading rack 4 further
The disc is clamped by the
You. In the playback state, another disk tray in the storage position
When replacing the upper disk, first move the holder
6. Raise 6 and 7 and set the protrusion of loading rack 4 to the impeller.
Remove from 48. At this time, the protrusion 5a of the slider 5
It comes off from the recess 2b of the
The protrusion 38d of the pump arm 38 is a square hole of the disc tray 2.
2d, the position of disc tray 2 is restricted.
Have been. Thereafter, the loading rack 4 is brought into the initial state.
Forward to the position. In this state, any disk tray
It is clear from the above description that the disk can be replaced on
It is. In this way, during disc playback,
Disc tray other than the disc tray on which the disc
You can replace the disk on the b. The present invention has been described with reference to the preferred embodiment.
According to the mechanism, the playback unit chassis supported in a floating state
The unclamping operation involves an impact because it drives the machine directly.
Done without. In addition, a disc reproducing apparatus with a changer
When applied, the number of frames is smaller than
And the mechanism is simplified.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 (a) 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. 1 (b) is a side view thereof. It is. 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. 10 (a) is a perspective view showing a part of the clamp means, and FIGS. 10 (b) to (d) 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
Circular groove 4 Loading rack, 4a Circular groove, 4b Circular 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 Projection, 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 microswitch 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 Square pillar 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

Continuation of the front page (56) References JP-A-4-98646 (JP, A) JP-A-9-27182 (JP, A) JP-A-4-45337 (JP, U) (58) Fields investigated (Int) .Cl. ⁷ , DB name) G11B 17/022-17/035 G11B 17/04

Claims (1)

(57) [Claim 1] A playback unit chassis is supported in a floating state with respect to a frame via an elastic member, and the playback unit chassis is separated from and brought into contact with a clamper supported by the frame. In the clamp mechanism, a movable member is movably supported by the frame, and the movable member presses the playback unit chassis to deflect the elastic member, thereby lowering the playback unit chassis to an unclamped state, and Is moved away from the playback unit chassis so that the playback unit chassis is raised by the elasticity of the elastic member to be in a clamped state.
The different orientations of the respective pressure receiving surface of which is provided on the slider to drive the hear rotary members equipped with a torsion coil spring presses on the frame, the torsion coil spring is selectively pressurizing one of the pressure receiving surface of said respective Thus, a clamping mechanism of a disc reproducing apparatus that balances the driving force of the clamping operation and the unclamping operation.