JP2995997B2 - Disk unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive most suitable for use in, for example, a CD-ROM drive, and more particularly to a simple disk drive.

[0002]

2. Description of the Related Art Conventionally, a disk, which is a CD-ROM, is placed on a disk tray and inserted horizontally into a drive. A disk table is moved horizontally in the disk insertion direction in synchronization with the insertion of the disk. While mounting the disc on the disc from below, which is perpendicular to the disc insertion direction, and moving the disc clamper horizontally in the disc insertion direction in synchronization with the disc table, place the disc on the disc table from above. A simple CD-ROM drive has been considered in which magnetic chucking is performed.

[0003]

However, conventionally, the structure of the guide mechanism of the moving block to which the disk table is mounted is complicated, and the number of parts and the number of assembly steps are large.
There was a problem that assembling was troublesome and costly.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problem, and has as its object to simplify the structure of a guide mechanism of a moving block to which a disk table is attached.

[0005]

According to the present invention, there is provided a disk apparatus for recording and / or reproducing data in a direction perpendicular to a disk insertion direction while being moved in a disk insertion direction in synchronization with the insertion of the disk. In a disk device having a disk table mounted on the disk from any direction, at least a guide groove for guiding a moving block on which the disk table is mounted is provided with a chassis and a guide component detachably mounted on the chassis. It is formed between.

[0006]

According to the disk apparatus of the present invention, a guide groove is formed between a chassis and a guide component detachably mounted on the chassis, and the moving block on which the disk table is mounted is provided. Since the guide is performed by the guide groove, the structure of the guide mechanism of the moving block can be simplified.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a disk drive in which the present invention is applied to a simplified CD-ROM drive will be described with reference to the drawings.

First, the components of the disk drive will be described with reference to FIGS. FIG. 3 shows the disk device in an upside down state.

[0009] As shown in FIG.
A moving block 4 on which a chassis 1, a disc table 2 and an optical pickup 3 are mounted, a clamper slider 6 for holding a disc clamper 5, a pair of left and right guide parts 7, a disc tray 8, a front panel 9, a pair of upper and lower shield covers 10, 11 comprises a printed circuit board 12, a tray lock block 13, and the like.

The chassis 1 is formed of a synthetic resin, and includes a top plate 1a, a pair of left and right side plates 1b,
The back plate 1c is integrally formed, and is formed in a box shape with the lower surface and the front surface opened.

The movable block 4 is formed of a synthetic resin, and a pair of front and rear guided portions 4b formed by horizontal pins on both left and right sides of a horizontal block body 4a.
4c is integrally formed. As shown in FIG. 5, the disk table 2 is mounted on the upper portion of the front end side of the block main body 4a by a spindle motor 14, and the block main body 4a is located rearward of the disk table 2 on the rear side.
The optical pickup 3 is mounted in the opening 4d formed in the above so as to be horizontally movable in the front-rear direction by a linear motor (not shown).

The disk clamper 5 is formed of a synthetic resin, and has a single-flange structure in which a horizontal single flange 5b is integrally formed only on the upper end side of an inverted truncated cone-shaped clamper main body 5a as shown in FIG. ing. Note that a metal plate 5c for magnet chucking is horizontally attached to the lower surface of the clamper body 5a by bonding or the like.

The clamper slider 6 is formed of a synthetic resin, and a pair of left and right legs 6b are integrally formed below the rear end of a horizontal slider body 6a. As shown in FIG. 5, a circular concave portion 6c is formed in the upper surface on the distal end side of the slider body 6a, and a circular clamper mounting hole 6d is formed concentrically in the center of the concave portion 6c.

The pair of left and right guide parts 7 are formed in a symmetrical shape with a synthetic resin. As shown in FIGS. 4 and 5, the left and right sides of these guide parts 7 are detachably connected to the chassis 1. A plurality of T before and after each means
The mold locking claw 7a and the elastic locking claw 7b are integrally formed. The left and right side plates 1b of the chassis 1 have the T
A plurality of vertical locking grooves 1d and locking holes 1 each having a plurality of open lower ends before and after the mold locking claw 7a and the elastic locking claw 7b are locked respectively.
e is formed.

The disk tray 8 is formed of a synthetic resin, and a tray decoration plate 8b is detachably connected to a front end of a horizontal tray body 8a by a snap fit (not shown). As shown in FIG. 6, a ring-shaped disc fitting hole 8c is formed on the upper surface of the tray body 8a, and a pair of left and right guide rails 8d are integrally formed along both left and right edges of the tray body 8a. .

The front panel 9 is formed of a synthetic resin.
a is formed horizontally. As shown in FIG. 6, on the rear side of the front panel 9, a pair of left and right elastic locking claws 9b disposed on the left and right sides and one elastic locking claw 9c disposed on the lower end of the central portion are provided. It is integrally molded.

The pair of upper and lower shield covers 10 and 16 are formed of sheet metal, and
Is formed into a deep U-shape having the same depth as the chassis 1 by the top plate 10a and the left and right side plates 10b. Is formed. A plurality of front and rear locking holes 10c are formed in the left and right side plates 10b of the upper shield cover 10, respectively.
Four screw insertion holes 1c are formed at four corners of one bottom plate 11a. On the left and right side surfaces of the left and right side plates 1b of the chassis 1, a plurality of locking claws 15 before and after the locking holes 10c are locked are integrally formed. On the front end sides of the left and right side plates 10b and the bottom plate 11a of the shield covers 10, 11, a total of three elastic locking claws 9 are provided.
Lock holes 10d and 11d are formed for locking b and 9c.

As shown in FIG. 1, a spindle motor 14 and an optical pickup 3
The printed circuit board 12 is provided with a total of six screw insertion holes 12.

As shown in FIGS. 1 and 2, the moving block 4 is provided on the inner wall of the left and right side plates 1b of the chassis 1.
And a pair of left and right guided guides 16 for guiding a pair of left and right guided parts 4b, and a pair of left and right horizontal guided grooves 17 for guiding a pair of left and right guided parts 4c. Are formed. A pair of horizontal left and right tray guide grooves 18 for guiding a pair of left and right guide rails 8d of the disk tray 8 is formed on the inner wall of the left and right side plates 1b of the chassis 1. The tray guide groove 18 is formed between the front end of the chassis 1 and the front guide groove 16 and between the front guide groove 16 and the rear guide groove 17 at a position above the two guide grooves 16 and 17. .

Then, as shown in FIGS. 1 and 2, the lower guide surfaces 16a, 16a,
17a and 18a are constituted by upward step portions formed on the pair of left and right guide components 7, and the downward upper guide surfaces 16b, 17b and 18b are constituted by downward step portions formed on the left and right side face plates 1b. ing.

A pair of left and right guided projections 6e each having a vertical step are integrally formed on the left and right sides of the front end side of the clamper body 6a of the clamper slider 6, and a pair of left and right guides for guiding these guided projections 6e is provided. The horizontal guide rail 19 is integrally formed on the lower surface of the top plate 1a of the chassis 1. An electromagnetic lock device (not shown) for the disk tray 8 is attached to the tray lock block 13, and a pair of screw insertion holes 13a is provided at both left and right ends thereof.
Are formed.

Next, the order of assembling the disk device will be described with reference to FIG.

First, the chassis 1 is placed horizontally upside down, and the disk clamper 5 is placed upside down on the top plate 1a.

Next, the clamper slider 6 is turned upside down, and the clamper mounting hole 6d is loosely fitted to the outer periphery of the clamper main body 5a of the disk clamper 5 from above. Then, the clamper slider 6 is attached to the chassis 1
On the top plate 1a in the front-rear direction (the length direction of the chassis 1) to engage the left and right guided projections 6e on the upper and lower sides of a pair of left and right guide rails 19 of the chassis 8.

Next, a pair of left and right guide rails 8d of the disk tray 8 are horizontally mounted on a pair of left and right upper guide surfaces 18b of the left and right side plates 1b of the chassis 1. At this time, a pair of left and right steps 8e formed at the rear end of the tray main body 8a of the disc tray 8 abut on the front side surfaces of the pair of left and right legs 6b of the clamper slider 6.

Next, the movable block 4 is turned upside down, and the roots of a pair of left and right guided portions 4c on the rear side of the movable block 4 are formed at the tips of a pair of left and right legs 6b of the clamper slider 6. Into the C-shaped fitting hole 6f against the elasticity from above, and the four guided parts 4b, 4c on the left and right sides of the moving block 4 are four upper sides on the left and right sides 1b of the chassis 1 in total. Guide surface 16a,
Place on 17a.

Next, the pair of left and right guide parts 7 are turned upside down and inserted from above into the inside of the left and right side plates 1b of the chassis 1, and the plurality of T-shaped engaging claws 7a of these guide parts 7 are set. The left and right pair of left and right side plates 1b are inserted into the plurality of locking grooves 1d from above, and finally, the plurality of elastic locking claws 7b are locked into the plurality of locking holes 1e using elasticity. Of the left and right side plates 1 of the chassis 1
Assemble from above inside b.

Then, as shown in FIGS. 1 and 2, a pair of upper left and right upper guide surfaces 16b, 17b, 18 of the chassis 1 are provided.
b and a pair of left and right lower guide surfaces 16a, 17a, 18a of a pair of left and right guide parts 7 are opposed to each other in parallel from above and below with an interval therebetween, and a pair of left and right front guide grooves 1 are disposed therebetween.
6. The rear guide groove 17 and the tray guide groove 18 are assembled. In FIG. 1, the cross-sectional position of the front guide groove 16 is shown shifted.

As shown in FIGS. 1 and 2, a pair of left and right guided members on the front side of the moving block 4 are interposed between the upper and lower guide surfaces 16a and 16b of the pair of left and right front guide grooves 16 assembled as described above. The part 4b is slidably incorporated,
Upper and lower guide surfaces 17 of a pair of left and right rear guide grooves 17
A pair of left and right guided portions 4c on the rear side of the moving block 4 are slidably assembled between the pair of left and right guide surfaces 18a and 18b of the pair of left and right tray guide grooves 18. A pair of guide rails 8d are slidably assembled.

Accordingly, at the same time assembling the pair of left and right front guide grooves 16, the rear guide groove 17, and the tray guide groove 18, the pair of right and left guided portions of the moving block 4 into these guide grooves 16, 17 and 18. 4b, 4c, and a pair of left and right guide rails 8d of the disk tray 8 can be assembled.

At this point, as shown in FIG. 5, the front and rear ends 20a and 20b of a pair of left and right tension coil springs 20 for urging the moving block 4 to return are integrally formed with a pair of left and right guide parts 7. And a pair of left and right spring locking portions 4e integrally formed at the base of the pair of left and right guided portions 4c on the rear end side of the moving block 4.

Next, after the harness and the like drawn from the moving block 4 and the tray lock block 13 are connected to the connector or the like of the printed circuit board 12, the tray lock block 13 is turned upside down, and the left and right ends thereof are connected. It is placed on the front end side of the left and right side plates 1b of the chassis 1, and further,
The printed circuit board 12 is turned upside down and placed on the left and right side plates 1 b of the chassis 1 so as to overlap the tray lock block 13. And two screws 21
Is a pair of left and right screw insertion holes 1 on the front end side of the printed circuit board 12.
2b and a pair of left and right screw insertion holes 13a of the tray lock block 13 are commonly inserted from above into the printed circuit board 12 and the tray lock block 1 with these two screws 21.
3 and the left and right side plates 1 of the chassis 1
Screw to b.

Next, the chassis 1 is inserted from above into the inside of the left and right side plates 10b of the upper shield cover 10 turned upside down, while being turned upside down.
a is closely attached to the top plate 10a, and the plurality of locking holes 10c are locked to the plurality of locking claws 1f on the left and right sides of the left and right side plates 1b of the chassis 1 against the elasticity of the left and right side plates 10b.

Next, the lower shield cover 11 is turned upside down so as to cover the printed circuit board 12 from above, and the shallow left and right side plates 11b are fitted to the outside of the left and right both side plates 10b of the upper shield cover 10. Let it. Then, the four screws 22 are inserted into the four screw insertion holes 11 c of the shield plate 11.
And the remaining four screw insertion holes 12b of the printed circuit board 12.
The shield plate 11 and the printed circuit board 12 are fastened together by these four screws 22 and screwed to the left and right side plates 1 b of the chassis 1.

As described above, the disk device main body 23 having only the front surface opened as shown in FIGS. 1 and 6 is assembled. 1 and 6 show a state in which the assembled disk device main body 23 is turned upside down to a normal posture. In FIG. 6, the disc tray 8 is shown in an exploded manner. However, actually, the rear end side of the tray main body 8a of the disc tray 8 is inserted into the chassis 1, and only the tray decoration plate 8b is still in place. It has not been assembled.

Then, the front panel 9 is inserted into the outer periphery of the front end side of the disk tray 8a through the tray entrance 9a, and the front panel 9 is fitted to the outer periphery of the front end of the disk device main body 23, and the disk device main body 23 is inserted. Is closed, and a total of four elastic locking claws 9b, 9c of the front panel 9 are locked against a total of three locking holes 10d, 11d of the upper and lower shield plates 10, 11 against elasticity.

Finally, when the tray decoration plate 8b of the disk tray 8 is snap-fitted from the outside of the front panel 9 to the front end of the tray body 8a of the disk tray 8, assembly of the entire disk device is completed.

According to the disk device constructed and assembled as described above, the chassis 1 is installed upside down, and the disk clamper 5, the clamper slider 6, the disk tray 8, Since the block 4, the pair of left and right guide parts 7, the tray lock block 13 and the like can be assembled in one direction by turning upside down and sequentially stacking from above, the assembling work can be performed very easily.

As shown in FIG. 1, when the disk device main body 23 assembled as described above is turned upside down to a normal posture, the disk clamper 5 is moved by the single flange 5b into the concave portion 6c of the clamper slider 6. 2, the clamper main body 5a is projected downward from the clamper mounting hole 6d, and the one flange 5b is sandwiched between the clamper slider 6 and the top plate 1a of the chassis 1 with play. Is held. As shown in FIG. 1, the clamper slider 6 is vertically engaged with a pair of left and right guide rails 19 by a total of four guide projections 6e in the upper and lower directions, and is supported without rattling in the upper and lower directions.

Next, the loading and ejecting operations of the disk of the disk device assembled as described above will be described with reference to FIGS.

First, as shown in FIG. 7A, the disk tray 8 is guided horizontally by a pair of left and right guide rails 8d and the tray guide groove 18, and is pulled out horizontally from the disk device main body 23 in the direction of arrow a. In the state, a pair of left and right guided portions 4c on the rear end side of the moving block 4 are urged to move in the direction of arrow a by a pair of left and right tension coil springs 20, and a pair of left and right guided portions 4c are moved by the moving block 4 and the pair of left and right guided portions 4c. The clamper slider 6 connected via the leg 6b has been moved in the direction of the arrow a. In addition,
The rear end side of the disk tray 8 pulled out in the direction of the arrow a is brought into contact with the tray lock block 13 in the direction of the arrow a and stopped.

At this time, as shown in FIG. 8B, a pair of left and right guided portions 4c on the rear end side of the moving block 4 move horizontally in a pair of left and right rear guide grooves 17 in the direction of arrow a. On the other hand, the pair of left and right guided portions 4b on the front end side are shifted from a height position 16A, which is substantially the same height as the rear guide grooves 17 of the pair of left and right front guide grooves 16 of a crank type, to an inclined position 16B. Is moved down to the low position 16C, and the moving block 4 is rotated and inclined in the direction of arrow b, which is downward, around the pair of left and right guided portions 4c on the rear end side. Then, the pair of left and right guided portions 4c comes into contact with the front end of the rear guide groove 17 and stops. The clamper slider 6 is guided by a pair of left and right guide rails 19 and slides horizontally in the direction of arrow a.

Therefore, as shown in FIG. 9B, the disk clamper 5 is horizontally moved in the direction of arrow a by the clamper slider 6, and the disk table 2 is inclined downward with respect to the disk clamper 5. It is separated in the direction b and evacuated downward.

Next, at the time of loading, as shown in FIG. 7, the disk 24, which is a CD-ROM, is horizontally fitted into the disk fitting hole 8c of the disk tray 8 shown in FIG. Is guided by the pair of left and right guide rails 8d and the tray guide groove 18, and is pushed horizontally into the disk drive body 23 in the direction of arrow c by hand.

Then, as shown in FIG. 7B, when the disk tray 8 is pushed down to a certain depth in the direction of arrow c, a pair of left and right steps 8e of the disk tray 8 is formed.
Is inserted into the pair of left and right legs 6b of the clamper slider 6 from the direction of arrow c and is brought into contact therewith.
As a result, both legs 6b are pushed in the direction of arrow c.
And a pair of left and right legs 6b of the clamper slider 6
As a result, a pair of left and right guided portions 4c on the rear end side of the moving block 4 are pushed in the direction of arrow c.

Accordingly, the clamper slider 6 and the moving block 4 are pushed together by the disk tray 8, and the clamper slider 6 and the moving block 4 are pushed in the direction of arrow c against the pair of left and right tension coil springs 20. .

At this time, as shown in FIG. 8A, the clamper slider 6 is guided by a pair of left and right guide rails 19 and slides horizontally in the direction of arrow c. A pair of left and right guided portions 4 on the rear end side of the moving block 4
c is horizontally moved in a pair of left and right rear guide grooves 17 in the direction of arrow c, whereas the pair of left and right guided portions 4b on the front end side is lower than the substantially crank-shaped front guide groove 16. Sliding from the position 16C to the inclined position 16B, the ascending position is raised to the high position 16A, and the moving block 4 is rotated about the pair of left and right guided portions 4c on the rear end side in the upward direction of arrow d and horizontally. become.

Accordingly, as shown in FIG. 9A, the disk clamper 5 is moved horizontally by the clamper slider 6 in the direction of arrow c, and the disk table 2 is moved obliquely downward from the disk clamper 5 by the arrow d.
Close to the direction. Then, at the same time as the disk table 2 becomes horizontal, the center boss 2a at the center of the upper surface of the disk table 2 fits into the center hole 24a of the disk 24 from below, and as shown in FIG. Pushes the disk 24 horizontally upward from the disk fitting hole 8c of the disk tray 8 to a predetermined height. At this time, as shown in FIG. 9A, the disk clamper 5 is pushed up above the concave portion 6c of the clamper slider 6 together with the disk 24, and is buried in the outer periphery of the upper surface of the disk table 2. The disk clamper 5 is attracted by a magnet (not shown), and the disk 24 is magnetically chucked on the disk table 2 by the disk clamper 5. And at this time,
The optical pickup 3 is brought close to the lower surface of the disk 24.

When the disk tray 8 is completely pushed into the disk device main body 23 as shown in FIG. 7B, the tray decoration plate 8b is moved to the block of the moving block 4 shown in FIG. At the same time, the disc tray 8 is brought into contact with the buffer rubber 25 attached to the front end of the main body 4a from the direction of arrow c, and the disk tray 8 is locked by the electromagnetic lock device attached to the tray lock block 13.

Thus, the loading operation is completed.
Thereafter, the disk table 2, the disk 24 and the disk clamper 5 are integrally rotated by the spindle motor 14, and the optical pickup 3 is moved to the moving block 4.
Is moved in the direction of arrow e in FIG. 9A within the opening 4d of FIG.

When ejecting, as shown in FIG. 6, when the eject button 26 attached to the front panel 9 is pressed, the electromagnetic lock device attached to the tray lock block 13 is unlocked. Then
7C, the moving block 4 and the clamper slider 6 are pushed out by the pair of left and right tension coil springs 20 in the direction of the arrow a. The disc tray 8 is horizontally pushed out in the direction of arrow a by the legs 6b.

Then, as shown in FIG. 9B, when the disk table 2 is separated from the disk clamper 5 in the direction of arrow b, the disk 24 falls below the disk clamper 5 by its own weight and the disk tray 8 Again horizontally in the disk fitting hole 8c. The moving block 4 is moved by a pair of left and right tension coil springs 20.
And, when the clamper slider 6 is pushed out in the direction of arrow a to the position shown in FIG. 8B, it stops, and thereafter, as shown in FIG. 7C, the disc tray 8 is manually moved in the direction of arrow a. To draw out.

The embodiment of the present invention has been described above.
The present invention is not limited to the embodiments described above, and various modifications can be made based on the technical idea of the present invention. Also,
The present invention is not limited to the CD-ROM drives shown in the above embodiments, but can be applied to various disk devices for recording and / or reproducing various disks for recording and reproduction.

[0054]

The disk device of the present invention configured as described above has the following effects.

A guide groove is formed between the chassis and a guide component detachably mounted on the chassis, and the movable block on which the disk table is mounted is guided by the guide groove so that the movable block is guided. Since the structure of the mechanism can be simplified, the number of parts and the number of assembly steps can be reduced, and the cost can be reduced.

Since the guide groove is formed between the chassis and the guide component detachably attached to the chassis, the guided portion of the moving block is placed on the guide surface of the guide groove on the chassis side, and the guide groove is formed. The movable block can be assembled to the chassis from one direction by detachably attaching the guide component to the chassis from above and pressing the upper side of the guided portion of the movable block by the guide surface of the guide groove on the guide component side. Therefore, the assembling is very simple, the workability of the assembling can be improved, and the productivity of the disk device can be improved.

Just by removing the guide parts from the chassis,
Since the guide groove can be disassembled and the moving block can be easily removed from the chassis, disassembly work such as repair can be easily performed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view taken along line AA of FIG. 6 showing a main part of a disk drive according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line BB in FIG.

FIG. 3 is an exploded perspective view of the entire disk device.

FIG. 4 is an exploded perspective view of a chassis, a moving block, and a guide component.

FIG. 5 is an exploded perspective view of a guide component, a moving block, and a clamper slider.

FIG. 6 is an exploded perspective view showing attachment of a disk tray and a front panel to a disk body.

FIG. 7 is a partially cutaway side view for explaining a loading / ejection operation of the disc.

FIG. 8 is a schematic side view illustrating guidance of a moving block and a clamper slider.

FIG. 9 is a partially cut-away schematic side view illustrating a magnetic chucking operation of a disk by a disk table and a disk clamper.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chassis 1b Side plate of chassis 2 Disk table 4 Moving block 4b, 4c Guided part of moving block 7 Guide component 7a T-shaped locking claw of guide component (coupling means) 7b Elastic locking claw of guide component (coupling means) 16 Front guide groove 16a Lower guide surface on the guide component side of the front guide groove 16b Upper guide surface on the chassis side of the front guide groove 17 Rear guide groove 17a Lower guide surface 17b on the guide component side of the rear guide groove 17b Rear Upper guide surface of the guide groove on the chassis side 24 Disc

Claims (1)

(57) [Claims] 1. A disk drive comprising a disk table mounted on a disk from a direction perpendicular to the disk insertion direction while being moved in the disk insertion direction in synchronization with the insertion of the recording / reproduction disk. A disk device, wherein a guide groove for guiding a moving block on which the disk table is mounted is formed between a chassis and a guide component detachably mounted on the chassis.