JPH1040620A - Disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the thinning of a disk device by improving the structure around a clamper in the disk device. SOLUTION: A 2nd permanent magnet member 64 is provided on a top plate 51 of the disk device to attract the clamper 61 by the magnetic force of the 2nd permanent magnet member 64 for keeping it in the supported state. A 1st permanent magnet member 35a is built in a turntable 35. The magnetic force of the 1st permanent magnet member 35a is stronger than that of the 2nd permanent magnet member 64. When the turntable 35 is moved to the position supporting the disk from the low position, the clamper 61 is pulled away from the magnetic attraction of the 2nd permanent magnet member 64 on the top plate by the magnetic force of the 1st permanent magnet member 35a and magnetically attracted to the turntable 35, then the disk 11 is clamped on the turntable 35.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive, and more particularly, to a disk drive for recording and reproducing data by clamping a disk carried by a tray on a turntable. Some of the disk devices of this type are used by being incorporated in a computer device. It is desired that a disk device incorporated in a computer device be as thin as possible in order to cope with miniaturization of the computer device.

[0002]

2. Description of the Related Art FIG. 22 schematically shows a conventional disk drive 1. The disk device 1 has a turntable 2 and a clamper 3. As shown in FIG. 22A, the disk 4 is placed on the tray 5 and drawn into the apparatus, and is clamped by the turntable 2 and the clamper 3 as shown in FIG. The clamper 3 includes the arm 6
It is provided at the tip of. The arm 6 rotates and the clamper 3
Is moved between a retracted position Q1 where the insertion of the disk 4 is not hindered and a clamp position Q2 where the disk 4 is clamped.

[0003]

SUMMARY OF THE INVENTION The clamper 3 has an arm 5
Above, the thickness S of the arm 5 is required above the disk 4 in addition to the thickness of the clamper 3, the thickness of the top plate, and the distance the clamper 3 moves up and down. Moreover, the thickness S of the arm 6 is sufficient to ensure sufficient strength.
Need to be thicker. Therefore, the height h1 above the disk 4 is bulky, and it is difficult to reduce the thickness of the disk device 1.

Further, a mechanism for rotating the arm 5 is required, and the number of parts has been increased. Therefore, an object of the present invention is to provide a disk device that solves the above-mentioned problems.

[0005]

According to a first aspect of the present invention, a magnet means is provided on a top plate of a disk drive, and a clamper is attracted and supported by the magnetic force of the magnet means. When the turntable moves from a position separated from the disk to a position supporting the disk, the clamper is separated by magnetic attraction by the magnet means of the top plate, and a magnetic member is provided on the turntable. And the disk is clamped on a turntable.

[0006]

1, 2 and 3 show a disk drive 10 according to an embodiment of the present invention. Disk device 10
Has a configuration in which a bare CD-ROM 200 can be mounted, and a disk cartridge 300 containing a rewritable disk (PD) can also be mounted. CD-ROM200
And the rewritable disc (PD) has the same diameter and the same thickness.

As shown in FIGS. 1 to 5, a disk drive 10 generally includes a main assembly 11 and a main assembly 11.
And a tray assembly 13 which can be moved in and out of the main assembly 11. next,
Each of the above assemblies will be described.

[Main assembly 11] (mainly in FIGS. 1 and 2)
Reference) The main assembly 11 includes a generally box-shaped housing 20,
A driver mechanism 30 housed in the housing 20;
It comprises a lifting mechanism 40 for raising and lowering the driver mechanism 30.

First, the driver mechanism 30 will be described. The driver mechanism 30 has a configuration in which a turntable motor 32 is fixed to a base plate 31, an optical head 33 is supported so as to be movable in Y1 and Y2 directions, and an optical head moving mechanism 34 is provided. . A turntable 35 is fixed to the spindle of the turntable motor 32. The turntable 35 has, in the center, a convex hub 35b in which the first permanent magnet member 35a is incorporated.
(See FIG. 5). The optical head 33 is a CD-RO
This configuration is compatible with both M and rewritable discs. The driver mechanism 30 has an end in the Y1 direction of the base plate 31 fixed to the step portion 21 at an end (rear part) in the Y1 direction of the housing 20 by a leaf spring 36.
Can be bent to swing in the A and B directions. Normally, the driver mechanism 30 is in an obliquely downward state rotated in the B direction, and the turntable 35 is located at a low position.

On the base plate 31, pins 37a and 37b for positioning the disk cartridge are implanted at the ends in the Y2 direction and near the X1 and X2 sides. The elevating mechanism 40 is connected to the bottom plate 22 of the housing 20.
The slide member 41, the gear 42, the gear
It comprises an arm 43 and the like. The slide member 41 has a slanted elongated hole 41a and a rack 41b, and is provided so as to be slidable in the X1 and X2 directions. The oblique elongated hole 41a is fitted to a pin 44 at the end of the base plate 31 in the Y2 direction. The gear 42 meshes with the rack 41b. The gear arm 43 has a sector gear 43a and an arm 43b, and is supported at the center. The sector gear 43a is meshed with the gear 42, and the arm 43b is engaged with a rack member 92 described later. .

On the bottom plate portion 22 of the housing 20, a motor 45, a speed reduction mechanism 46 including a plurality of gears, and a pinion 47 are provided. The pinion 47 meshes with a rack member 94 described later. [Upper Assembly] (Mainly FIGS. 1, 4, 5, and 6) Next, the upper assembly 12 will be described. The upper assembly 12 includes a top plate 50, as shown in particular in FIG.
, A clamper mechanism 60 provided on the top plate 50, a shutter early opening mechanism 70, and the like.

The top plate 50 has a round opening 51 for mounting a clamper mechanism 60 and two guide slits 52 and 53 for a shutter quick opening mechanism 70. The first guide slit 52 has a start end 52a and an end 5a.
2b. The starting end 52a is X1, X2
The position is closer to the center in the direction, and is closer to the Y2 direction than the opening 51. The terminal end 52b is a position near the position P1 described below. The first guide slit 52 extends in the direction between X1 and Y1 from the start end 52a, and extends so as to bypass the opening 51; A second guide slit 52d extending linearly in the Y1 direction at a position closer to the X1 direction than the opening 51 following the guide slit 52c, a wide opening 52e at the end of the second guide slit 52d. Consisting of

The second guide slit 53 is an arc having a center at a position P1 where the pin 54 is planted (a position closer to the center in the X1 and X2 directions and closer to the end in the Y1 direction). It is formed in a portion closer to the direction and closer to the X2 direction. 53a is the start end and 53b is the end end.

The clamper mechanism 60 includes an upper surface 50 of the top plate 50.
a, and as shown in FIG. 4 and FIG.
1a, a ring-shaped synthetic resin clamper 61, and a ferromagnetic attraction plate 6 fixed to the upper surface at the center of the clamper 61.
2, a flange portion fixed to the lower surface 50b of the top plate 50, has an opening 63a so that the clamper 61 projects downward, and supports a flange portion 61a of the clamper 61 so that the clamper 61 does not come down. A holder 63 having 63b and a plate-shaped yoke 65 on the lower surface of which a second permanent magnet member 64 as magnet means is fixed. The holder 63 is fitted in the round opening 51 described above. The yoke 65 and the holder 63 are screwed to the upper surface 50a of the top plate 50.
The clamper 61 connects the suction plate 62 to the second permanent magnet member 64.
Magnetically attracted and pulled up in the Z1 direction. The clamper 61 protrudes from the lower surface 50b of the top plate 50 by a dimension a. The clamper mechanism 60 is configured such that the dimension a is as small as possible. Further, the attraction plate 64 is not in close contact with the second permanent magnet member 64, and is slightly away from the second permanent magnet member 64 by a dimension b. This is because the attraction plate 62 is easily separated from the second permanent magnet member 64.

As can be seen from the above, no arm for supporting the clamper 61 is provided. As a result, the clamper mechanism 60 is made thin, and consequently the disk device 10 is made thin. Further, a mechanism for rotating the arm supporting the clamper 61 is not provided. Therefore, the disk device 10 has a simple structure.

Incidentally, instead of the second permanent magnet member 64,
Providing a coil, energizing the coil appropriately to form an electromagnet,
The attraction plate 64 may be attracted by the magnetic force of the electromagnet. The shutter quick opening mechanism 70 is shown in FIGS.
(A), as shown in FIG. 4 and FIG.
A second arm 72, a shutter locking roller 73,
It comprises a first torsion spring 74, a second torsion spring 75 and the like.

The second arm 72 has a base side 72a.
It is pivotally supported by a pin 54 implanted on the lower surface 50 b of the top 50, and is rotatable along the lower surface 50 b of the top 50. The second arm 72 has a protrusion 7 protruding downward at the tip.
2b. When the second arm 72 rotates, the protruding portion 72 b at the tip moves along the second guide slit 53.

The first arm 71 has a substantially U-shape, and a pin 76 is caulked on the base side 71a.
A pin 77 is swaged at 1b, and a shutter locking roller 73 is rotatably supported here. The shutter locking roller 73 has a diameter d1, has a stepped shape, and has a small diameter portion 73a. The diameter d1 of the shutter locking roller 73 is larger than the width w of the first guide slit 52 and smaller than the diameter d3 of the wide opening 52e. Small diameter part 73
The diameter d2 of a is substantially equal to the width w of the first guide slit 52.

The first arm 71 has a shutter locking roller 73 protruding toward the lower surface 50 b of the top plate 50, and has a small diameter portion 7.
3a is movably fitted to the first guide slit 52,
The pin 76 is provided on the upper surface 50a of the top plate 50 in a state in which the pin 76 is fitted into a hole of the protrusion 72b at the tip of the second arm 72 and is rotatably connected to the tip of the second arm 72. It is.

The first arm 71 connects the shutter locking roller 73 to the lower surface 50 of the top plate 50 through the wide opening 52e.
It protrudes to the b side and is incorporated into the top plate 50. The second arm 72 is engaged with the cylindrical base side 72a of the second arm 72 by urging the second arm 72 counterclockwise by locking the ear 72c.
Is provided. A first torsion spring for urging the first arm 71 clockwise with respect to the second arm 72 between the base side of the first arm 71 and the distal end of the second arm 72 74 is provided. The spring force of the first torsion spring 74 is weaker than the spring force of the second torsion spring 75.

The shutter early opening mechanism 70 is in a state shown in FIG. That is, the second arm 72 is rotated counterclockwise to the start end 53a of the second guide slit 53 by the second torsion spring 75, and the first arm 7
1 is pushed by the second arm 72, and the shutter locking roller 73 is located at the start end 52 a of the second guide slit 52. The shutter locking roller 73 is
Shutter 30 of disc cartridge 300 to be inserted
It is located at a position facing one recess 301a (see FIG. 14).

When the shutter locking roller 73 is pushed in the Y1 direction, the shutter quick opening mechanism 70
Is rotated clockwise against the second torsion spring 75,
The first arm 71 is rotated counterclockwise with respect to the second arm 72, so that the first arm 71 and the second arm 72 are bent at the connecting portion 78. The shutter locking roller 73 is initially provided with the first guide slit 52 at the first position.
Along the guide slit portion 52c, moves in the Y1 direction while moving in the X1 direction, and then moves in the Y1 direction along the second guide slit portion 52d. In the process of moving the shutter locking roller 73 in the X1 direction, the shutter of the disk cartridge 300 is opened as described later.

[Tray Assembly] (Mainly, refer to FIGS. 1, 3, 7, and 8) Next, the tray assembly 13 will be described. The tray assembly 13 is shown in FIGS.
(B), FIGS. 7 (A), (B), and FIG. 8, the main tray 80 and the sub-tray 90
And a sub-tray elevating mechanism 100 for raising and lowering the sub-tray 90 with respect to the main tray 80.

Since both the main tray 80 and the sub-tray 90 are bilaterally symmetric, only a part of the bilaterally symmetric structure will be described. The main tray 80 has a shallow box shape corresponding to the size of the disk cartridge 300, and includes a bottom plate portion 81, a side plate portion 82, a rear-side (Y2 direction) rising wall-shaped rear edge receiving portion 84, and a front side ( (A Y1 direction).

The bottom plate portion 81 has a large opening 81a in the center, a round hole 81b on both sides on the rear side, a rising wall-shaped engaging portion 81d on the front X2 side, and a rising wall portion 81e on the X1 side. And a rising wall portion 81f near the front side on the X2 side. The opening 81a receives the optical head 33 and the turntable 35 as described later. The positioning pins 37a and 37b pass through the round hole 81b. As for the rising wall portions 81d and 81e, the sub tray 90 is Y1.
Functions as a stopper when moved in the direction. The back surface of the locking portion 81d on the Y1 direction side is
Projection 72 projecting below the tip of the second arm 72
It has the function of locking b.

The side plate portion 82 has a position near the Y1 end and a position near the Y2 end.
Two inclined grooves 82a and 82b are formed at positions near the ends. The inclined grooves 82a, 82b are inclined groove portions 82a-1, 82a directed in the Y1 direction toward the Z2 direction.
b-1 and horizontal grooves 82a-2 and 82b-2 extending from the lower end of the inclined groove in the Y1 direction.

The sub-tray 90 includes the main tray 8
CD-RO with a size that fits within 0 and a diameter of 12 cm
A 12 cm CD-ROM mounting portion 90a on which M is mounted;
8cm CD-R on which a CD-ROM with a diameter of 8cm is placed
It has a concentric circle with the OM mounting portion 90b, and has a large opening 90c at the center.

On the rear side (Y2 direction) of the sub-tray 90,
A long hole 90d, protrusions 90e, 90
f is formed. On the front end side (Y1 direction) of the sub-tray 90, there is a beam-shaped fender portion 90g at the center.
2. A rising wall-shaped front edge receiving portion 90 is provided on the end side in the X1 direction.
h, and a spring hook 90i is provided on the inside. The fender portion 90g is located at a position higher than the upper surface 90j of the sub-tray 90 by a small dimension c. Fender part 9
0g pushes the shutter locking roller 73 of the shutter early opening mechanism 70 as described later.

On both sides of the sub-tray 90, cylindrical projections 90k, 90l are provided corresponding to the above-mentioned inclined grooves 82a, 82b.
Is formed. The sub-tray 90 has a cylindrical projection 90.
k, 90l are fitted in the above-mentioned inclined grooves 82a, 82b, and are accommodated in the main tray 80. As shown in FIG. 7 (B), a tension coil spring 91 is hung between the spring hook 90i of the sub-tray 90 and the spring hook 81g of the main tray 80. The sub-tray 90 is moved in the Y2 direction with respect to the main tray 80 by the spring force of the tension coil spring 91, and the cylindrical protrusions 90k, 9
Ol is located at the end in the Y2 direction of the inclined groove portions 82a-1 and 82b-1, and floats by a dimension f from the main tray 80. The fender portion 90g is located at a height facing the shutter locking roller 73.

In this state, the main tray 80
The dimension L2 between the rising wall portion 84 on the rear side (Y2 direction) and the rising wall portion 90h of the sub-tray 90 is slightly shorter than the length L1 of the disk cartridge 300. 92
Is a rack member, which extends in the Y1 and Y2 directions and is slidable in the Y1 direction at a position near the X1 direction on the back surface of the bottom plate portion 81 of the main tray 80. Here, the rack member 92 is normally locked in the concave portion 92a at the end in the Y1 direction by a stopper 93 rotatably provided on the back surface of the bottom plate portion 81, and is restricted from sliding in the Y1 direction. Fixed to The locking of the rack member 92 by the stopper 93 is released when the main tray 80 is pulled into the housing 20 and the rack member 92 is moved to the main tray 8 as described later.
It can be moved independently of 0.

The rack member 92 has an arm 92b extending in the X1 direction on the end side in the Y2 direction. This arm 9
2b, when the rack member 92 moves independently with respect to the main tray 80, as described later,
Of the arm 43b is pushed.

The rack member 92 has a long hole 92c. Protruding pillar 90m protruding below sub-tray 90
Protrudes into the elongated hole 92c through the opening 81h of the bottom plate portion 81 of the main tray 80. The relationship between the column 90m and the elongated hole 92c is as follows.
The edge 92c of the elongated hole 92c
-1 presses the protruding column portion 90m.

The tray assembly 13 is, as shown in FIG.
The lower corners 82c of the side plates 82 on both sides of the main tray 80 are supported by the step portions 24 inside the side walls 23 on both sides of the housing 20, and the top plate 50 restricts the upward escape. In this state, it is provided so as to be slidable in the Y1, Y2 directions. The rack member 92 meshes with the pinion 47 described above.

The inclined grooves 82a and 82b, the columnar projections 90k and 90l, the tension coil spring 91, the rack member 92, and the like constitute the sub-tray elevating mechanism 100. Next, the operation of the disk device 10 having the above configuration will be described. As shown in FIGS. 3A and 3B, the disk device 10 is in a state where the tray assembly 13 is out of the housing 20.

[Operation for Mounting CD-ROM] (Mainly,
First, the operation of loading a CD-ROM will be described. The operator, as shown in FIG.
2 cm CD-ROM 200 into CD-ROM mounting part 90a
And press an operation button (not shown).

By this operation, as shown in FIG. 13A, the motor 45 starts and rotates forward. After the rotation of the motor 45 is reduced by the reduction mechanism 46, the pinion 4
7, the pinion 47 is rotated in the counterclockwise direction, and the rack member 92 is driven in the Y1 direction, as shown in FIG. 12B, and the tray assembly 13 (main tray 80)
Is moved in the Y1 direction and enters the housing 20 as shown in FIG. Along with the main tray 80, the sub-tray 90 and the loaded CD-ROM 200
Moves, and the CD-ROM 200 enters the housing 20. As shown in FIG. 13D, the sub-tray 90 is kept horizontally floating from the main tray 80, and
-The ROM 200 moves at the height of H1 in a horizontal posture.
The height H1 is the same as the height H1 when clamped, which will be described later, and is substantially the same as the height of a rewritable disc (PD) when the disc cartridge 300 described below is mounted.

The CD-ROM 200 has a turntable 3
5 enters the space 210 between the clamper 61. The space 210 is a space in which the width of the narrowest part is e. The width e is slightly larger than the thickness t1 of the CD-ROM 200. The width e is equal to the width of the disc cartridge 300 described later.
Is smaller than the thickness t4.

The fender portion 90g of the sub-tray 90 pushes the shutter locking roller 73 of the shutter quick-open mechanism 70, and the shutter quick-open mechanism 70 is operated as shown in FIG. 13 (E), and as shown in FIG. , The first arm 71
And the second arm 72 are bent, and the second arm 7
The projecting portion 72b at the end of No. 2 is guided by the rising guide wall 81f and is locked on the back side of the locking portion 81d.

When the disk drive 10 is in the state shown in FIG. 10, the stopper 93 faces the concave portion 25 of the side wall 23 of the housing 20, and the clockwise rotation regulation which has been performed by the side wall portion 82 until then is restricted. The rack member 92 is released and pushed by the rack member 92 to rotate the stopper 93 clockwise, so that the fixing of the rack member 92 is released. The main tray 80 contacts a stopper (not shown). Therefore, the movement of the main tray 80 in the Y1 direction stops, and only the rack member 92 further moves in the Y1 direction.

As shown in FIGS. 11A and 11B, first, the edge 92c-1 of the long hole 92c pushes the protruding column 90m by the movement of the rack member 92 at this time, and the sub-tray 90 Is moved in the Y1 direction with respect to the main tray 80 against the tension coil spring 91, and the cylindrical projection 9 is moved.
0k and 90l are guided and moved by the inclined grooves 82a and 82b, and the sub-tray 90 sinks as shown in FIG.

Second, the arm 92b of the rack member 92 is connected to the projecting column 43b at the tip of the arm 43b of the gear arm 43.
1, the gear arm 43 is rotated counterclockwise, and the elevating mechanism 40 operates. That is, the slide member 41 slides in the X2 direction via the gear 42, and the oblong slot 41a is
4, the driver mechanism 30 is rotated in the direction A, and the turntable 35 is moved upward as shown in FIG. The optical head 33 is also moved upward.

As shown in FIG. 12, the turntable 35
Moves upward to a horizontal state, the hub 35b of the turntable 35 fits into the center hole 200a of the CD-ROM 200, and the turntable 35 supports the CD-ROM 200. When the turntable 35 moves up to the horizontal state, as shown in FIG.
5a attracts the attraction plate 62, and the attraction plate 62 is separated from the second permanent magnet member 64, and the first permanent magnet member 35a
And the clamper 61 clamps the CD-ROM 200.

In this state, the motor 32 drives the CD-R
The OM 200 is rotated and reproduced by the optical head 33. The operation of ejecting the CD-ROM 200 is performed by the motor 4
5 is performed by reversing. When the motor 45 rotates in the reverse direction, each of the above-described mechanisms operates in the reverse direction in the reverse order of the above-described mounting. That is, the slide member 41 slides in the X2 direction, the driver mechanism 30 rotates in the B direction, the turntable 35 moves down, the clamper 61 is separated, and C
The clamp of the D-ROM 200 is released and the sub-tray 9
When the CD-ROM 200 is moved upward and the CD-ROM 200 is supported on the sub-tray 90 and the slide member 41 returns to the set position, the tray assembly 13 is moved in the Y2 direction. As the tray assembly 13 moves in the Y2 direction, the shutter early opening mechanism 70 returns to the original state shown in FIG.

An 8 cm CD-ROM is also mounted in the same manner as described above. [Mounting Operation of Disk Cartridge] (Mainly See FIGS. 14 to 21) Next, an operation of mounting the disk cartridge 300 will be described. Here, the disk cartridge 300 will be described. The disc cartridge 300 is shown in FIG.
As shown in FIG. 4, the rewritable disc 303 is housed in a cartridge 302 having a shutter 301. The shutter 301 moves in the X1 direction and opens as shown in FIG.

As shown in FIGS. 15A and 15B, the operator inserts the disc cartridge 300 into the tray assembly 13.
Place on top. This operation is performed as shown in FIGS.
This is performed as shown in FIG. The operator moves the disk cartridge 300 into the shutter 3 as shown in FIG.
01 facing the front side, holding the front side in an inclined position with the front side lowered,
The front side is brought into contact with the front edge receiving portion 90h, and the disc cartridge 300 is pushed so as to be pushed into the disc device 10. As a result, the sub-tray 90 is
Is moved in the Y1 direction. At this time, the columnar projections 90k and 90l are guided and moved by the inclined grooves 82a and 82b, and the sub-tray 90 gradually sinks as shown in FIG. The disc cartridge 300 is shown in FIG.
As shown in FIG. 6C, the sub-tray 90 completely sinks (see FIG. 21D), and the disk cartridge 300
Is completely accommodated in the main tray 80, and when viewed in the length direction, the leading edge receiving portion 90h pushed in the Y1 direction
And the rear side of the main tray 80 (Y2 direction) with the trailing edge receiving portion 84 sandwiched by the spring force of the spring 91.

After the disc cartridge 300 is placed, an operation button (not shown) is pressed. By this operation, FIG.
As shown in FIG. 1 (A), the motor 45 starts and rotates forward,
Through the pinion 47, the rack member 92 is
As shown in FIG. 21B, the tray assembly 13 is driven in the Y1 direction, and
As shown in FIG. 17 (C), the rack member 92 is moved in the Y1 direction and enters the housing 20 to the position shown in FIGS. 17 (A) and 17 (B), and then the fixing of the rack member 92 is released. Moves further in the Y1 direction to the position shown in FIG. As shown in FIG. 19, the rewritable disc 303 moves while keeping the position at the height H1 horizontal.

As shown in FIG. 21D, the sub-tray 90 is kept sunk in the main tray 80.
As soon as the disk cartridge 300 enters the housing 20, the recess 301a of the shutter 301 engages with the shutter locking roller 73 of the shutter quick-opening mechanism 70 and pushes the shutter locking roller 73. Thus, the shutter early opening mechanism 70 is operated as shown in FIG.
That is, while the first arm 71 and the second arm 72 rotate so as to be bent, the shutter locking roller 73
In the process of moving along the guide slit portion 52c, the shutter 301 is opened as shown in FIG. FIG.
As can be seen from the positional relationship between the first guide slit portion 52c and the round opening 51, the shutter 301 is completely opened by the time the leading end in the insertion direction of the disc cartridge 300 reaches the position of the clamper 61. That is, the shutter 301 is quickly opened. When the shutter locking roller 73 moves along the second guide slit 52d, the shutter locking roller 73 is kept at the position moved in the X1 direction, and the shutter 301 is kept open. Also, as shown in FIG. 17, the first arm 71 and the second arm 72 are bent, and the projection 72b at the tip of the second arm 72 is locked on the back side of the locking portion 81d. Become.

When the shutter 301 is opened, the beam 304 is exposed on the cartridge 302. This bar 304
It has a thickness t3 that is smaller than the thickness t4 of the disc cartridge 300 and slightly larger than the thickness t2 of the rewritable disc 303, and is located at the center in the height direction of the cartridge 302. Therefore, as shown in FIG. 19, the beam 304 passes through the space 210 between the turntable 35 and the clamper 61. The rewritable disc 303 following the beam 304 also enters the space 210.

The clamper 61 relatively passes above the beam 304 and relatively enters the exposed opening 306 of the upper plate 305 of the cartridge 302. Turntable 3
The hub 35 b of the cartridge 5 relatively passes under the beam 304, and the exposed opening 3 of the lower plate 307 of the cartridge 302.
08 relatively.

Therefore, the disk cartridge 300
It is inserted without colliding with the turntable 35 and the clamper 61. By the movement of the rack member 92 alone in the final stage, the lifting mechanism 40 is operated, the driver mechanism 30 is rotated in the direction A, and the turntable 35 is moved as shown in FIG. , Moved up.
The optical head 33 is also moved upward. When the turntable 35 moves up to the horizontal state, as in the case described above, FIG.
As shown in (1), the rewritable disk 303 is clamped on the turntable 35 by the clamper 61 at the position of the height H1.

In this state, the rewritable disk 303 is rotated by the motor 32, an information signal is recorded by the optical head 33, and the recorded information signal is reproduced. Also, a pin 3 for positioning the disk cartridge is provided.
7a and 37b fit into the positioning holes (not shown) of the cartridge 302 through the round holes 81b and the long holes 90d, and the disk cartridge 300 is positioned.

Similar to the operation of discharging the CD-ROM, the operation of discharging the disk cartridge 300 is performed by the motor 45 rotating in the reverse direction. When the motor 45 rotates in the reverse direction, each of the above-described mechanisms operates in the reverse direction in the reverse order to the above-described mounting, the clamp of the rewritable disc 303 is released, and then the disc cartridge 300 is ejected.

[0053]

As described above, according to the first aspect of the present invention, the clamper is attracted and supported by the magnet means on the top plate of the disk drive, and the turntable moves in the direction approaching the clamper. When the clamp reaches the position for supporting the disc, the clamper is separated from the magnet means of the top plate, and is magnetically attracted to the turntable to clamp the disc.Therefore, the clamper is provided with an arm, and the arm is provided. Compared with a configuration in which the clamper is rotated to move the clamper up and down, the disk device can be made thinner by the thickness of the arm. Further, since the arm and the mechanism for rotating the arm are not required, the configuration of the disk device can be simplified accordingly.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a disk device according to an embodiment of the present invention.

FIG. 2 is a plan view showing the disk device according to one embodiment of the present invention with an upper assembly and a tray assembly removed.

FIG. 3 is a diagram showing a state where the tray assembly of the disk device according to the embodiment of the present invention is pulled out.

FIG. 4 is an exploded perspective view of the upper assembly in FIG.

FIG. 5 is an enlarged view showing a clamper and a turntable in FIG. 3 (B).

FIG. 6 is a view showing a shutter early opening mechanism of the upper assembly.

FIG. 7 is an enlarged view of the tray assembly in FIGS. 3A and 3B.

FIG. 8 is a sectional view taken along line VIII-VIII in FIG.

FIG. 9 is a diagram illustrating an operation of placing a CD-ROM on a tray assembly that has been pulled out.

FIG. 10 is a diagram illustrating a state where a tray assembly on which a CD-ROM is placed is drawn into a housing;

FIG. 11 is a diagram showing a state where a CD-ROM is clamped.

FIG. 12 is an enlarged view showing a state where the CD-ROM is clamped.

FIG. 13 is a diagram illustrating the operation of each unit of the disk device when a CD-ROM is mounted.

FIG. 14 is a perspective view of a disk cartridge containing a rewritable disk (PD).

FIG. 15 is a diagram illustrating a state where the disk cartridge is placed on a tray assembly from which the disk cartridge is pulled out.

FIG. 16 is a diagram illustrating an operation when the disk cartridge is placed on the tray assembly that has been pulled out.

FIG. 17 is a diagram showing a state where a disk cartridge is mounted.

FIG. 18 is a diagram illustrating a state where a shutter of the disk cartridge is opened.

FIG. 19 is a diagram illustrating a state in which the disk cartridge with the shutter opened has entered between the clamper and the turntable.

FIG. 20 is an enlarged view showing a state where the disk in the disk cartridge is clamped.

FIG. 21 is a diagram illustrating the operation of each unit of the disk device when a disk cartridge is mounted.

FIG. 22 is a diagram showing a conventional disk device.

[Explanation of symbols]

REFERENCE SIGNS LIST 10 disk device 11 main assembly 12 upper assembly 13 tray assembly 20 box-shaped housing 21 step 22 bottom plate 23 side wall 24 step 25 recess 30 driver mechanism 31 base plate 32 turntable motor 33 optical head 34 optical Head moving mechanism 35 Turntable 35a First permanent magnet member 35b Convex hub 36 Leaf spring 37a, 37b Pin for positioning disk cartridge 40 Lifting mechanism 41 Slide member 41a Slant elongated hole 41b Rack 42 Gear 43 Gear arm 43a Sector Gear 43b Arm 43b-1 Protruding column part 44 Pin 45 Motor 46 Reduction mechanism 47 Pinion 50 Top plate 50a Upper surface 50b Lower surface 51 Round opening 52 First guide slit 52a Start 52a End 52c First guide slit 5 2d Second guide slit 52e Wide opening 53 Second guide slit 53a Start end 53b End 60 Clamp mechanism 61 Clamp 61a Flange 62 Ferromagnetic attraction plate 63 Holder 63a Open 63b Flange 64 Second permanent magnet member 65 Plate-shaped yoke 70 Shutter early opening mechanism 71 First arm 72 Second arm 72b Projection 73 Shutter locking roller 73a Small diameter portion 74 First torsion spring 75 Second torsion spring 76, 77 pin 78 Connecting portion 80 Main tray 81 Bottom plate portion 81a Large opening at center 81b Round hole 81d Rising wall-shaped locking portion 81e Rising wall portion 81f Rising wall portion 81g Spring hook portion 81h Opening 82 Side plate portion 82a, 82b Inclined groove 82a-1 , 82b-1 Inclined grooves 82a-2, 82b-2 Horizontal grooves 8 c Corner portion of lower edge of side plate portion 84 Rising edge-shaped rear edge receiving portion 85 Beam portion 90 Subtray 90a 12cm CD-ROM loading portion 90b 8cm CD-ROM loading portion 90c Large opening at center 90d Slots 90e, 90f Projection Part 90g Central beam-shaped fender part 90h Standing wall-shaped front edge receiving part 90i Spring hook part 90j Upper surface 90k, 90l Cylindrical projection 90m Protrusion part 91 Pulling coil spring 92 Rack member 92a Recess 92b Arm 92c Slot 92c -1 edge 200 12 cm CD-ROM 210 space between turntable 35 and clamper 61 300 disk cartridge 301 shutter 301a recess 302 cartridge 303 rewritable disk 304 bar 305 upper plate 306 opening 307 lower plate 308 opening

Claims (1)

[Claims] A magnet means is provided on a top plate of a disk device,
The clamper is configured to be attracted and supported by the magnetic force of the magnet means, the turntable is configured to incorporate a permanent magnet member, and when the turntable is moved from a position separated from the disk to a position supporting the disk. Then, the magnetic force of the permanent magnet member incorporated in the turntable causes the clamper to be separated from the magnetic attraction of the top plate by the magnetic means, and is magnetically attracted to the turntable. A disk device characterized by being configured to be clamped on top.