JPH10208357A - Disk drive device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the vibration of a disk tray caused by the vibration due to the rotation of disk or the vibration due to the seek of a pickup mechanism, by constituting a disk drive device in such a manner that the disk tray is pressurized by a cam mechanism in accordance with the acending operation of the cam mechanism for raising/lowering a disk rotation drive mechanism to be fixed to the side of the device main body. SOLUTION: This device is constituted in such a manner that a projecting piece 91 is projectingly provided on the upper surface of an inclined cam body 25 arranged on a cam lever 24 pivotally supported by a frame 15 to pressurize the disk tray 4 upward in the manner of abutting so as to thrust up to the lower surface side of the disk tray 4, and the upper surface sides of edge parts of both sides are pressed in contact with a tray retaining guide and held. Thus, the disk tray 4 is abutted in the state inserted into the frame 15 and pressed in contact with the tray retaining guide, thereby the occurrence of play is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive device having a structure in which a disk is loaded on a disk tray.

[0002]

2. Description of the Related Art For example, CD, CD-ROM, DVD, H
2. Description of the Related Art A disk drive device such as a D-CD has a structure in which a disk tray is provided movably with respect to the device main body between a pull-out position and a storage position, and a disk is loaded on the disk tray. Are widely used.

[0003] A disk rotation drive mechanism for rotating and driving the loaded disk and an optical pickup mechanism for reading or writing recorded information on the disk are built in the apparatus main body of the disk drive device.

The disk rotation drive mechanism includes a spindle motor and a turntable rotated by the spindle motor. The disk rotation drive mechanism and the optical pickup mechanism are mounted on a movable chassis, and are moved to a disk tray by an elevating cam mechanism. The disk that is raised and lowered and loaded by the disk tray is chucked and rotated on the turntable, and the optical pickup mechanism seeks to face the recording surface of the rotated disk to read or write recorded information. Is configured to do so.

[0005]

By the way, in the disk drive device constructed as described above, the disk tray is almost free from the main body of the disk drive during the rotation of the disk. The disk tray vibrates due to vibrations due to rotation or seeks of the optical pickup mechanism, causing problems such as interference with the disk when reading or writing recorded information on the disk or generating noise, etc. It may disappear.

The present invention has been made to solve such a problem.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has a disk tray provided movably between an extraction position and a storage position with respect to an apparatus main body. Is loaded on a disk rotation drive mechanism in the apparatus main body, and the loaded disk tray is fixedly held on the apparatus main body side.

With this configuration, vibration of the disk tray in the loading state and during rotation of the disk is prevented, and troubles such as interference with the disk and generation of noise are eliminated.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a disk drive according to the present invention will be described below with reference to the drawings. The disk drive device of this example is configured to load a disk by a sliding operation of a disk tray for mounting and holding the disk, and to raise and lower a disk rotation drive mechanism with respect to the disk tray. −
Optical discs, both standard density discs such as ROM and high density discs such as DVD-HD-CD, can be used as information recording media.

First, as shown in FIGS. 9 and 10, the exterior of the disk drive device 1 of this embodiment has a flat, box-shaped exterior 2 with an open front, and fits into the opening of the exterior 2. It is composed of a front panel 3 fixed together. The front panel 3 is formed with a tray entrance 3a into which the disk tray 4 is inserted so as to be able to be taken in and out. The tray entrance 3a is closed by the front plate 4a with the disk tray 4 inserted into the exterior body 2. The front panel 3 is provided with an eject button 5 for ejecting the disc tray 4 and the like. As the material of the exterior body 2, a steel plate, and the front panel 3 and the disk tray 4 are preferably made of a synthetic resin such as ABS resin, but the exterior body 2 is made of a synthetic resin, and the disk tray 4 is made of a metal, for example. It can be formed of an aluminum alloy or the like.

Next, the structure of each mechanism of the disk drive device 1 of the present embodiment will be described with reference to FIGS. As shown in FIGS. 1 and 10, the disc tray 4 has a substantially flat plate shape, and has a concave plate-shaped disc housing on which an optical disc D such as a CD or DVD can be placed and accommodated horizontally. The part 11 is formed. A long opening 12 extends rearward from the center of the disk housing 11 along the tray center.
Are formed, and the rear end of the opening 12 is connected by a connecting surface 13.

In addition, on the peripheral edge of the disk accommodation portion 11,
When the disk drive device 1 is used in the vertical position, the disk holding piece 14 is mounted to be eccentrically rotatable in order to prevent the optical disk D from dropping out of the disk housing portion 11 during disk loading. This disk holding piece 14
By rotating the disk, the distal end is
1, the optical disc D is locked and held corresponding to the peripheral surface of the optical disc D to be accommodated.

Although not shown on the back side of the disk tray 4, a J-shaped rack meshing with a driving gear of a loading drive mechanism described later is provided on one side in the front-rear direction, similarly to a known disk tray. A guide groove for guiding the drive gear is formed along the rack, and guide rails are formed on both sides in the front-rear direction. The disk tray 4 configured as described above is inserted and supported in a frame 15 fixed in the exterior body 2 so as to be slidable in the front-rear direction.

The frame 15 is provided with a loading drive mechanism 20, a disk rotation drive mechanism 30, and an optical pickup mechanism 40.

The frame 15 is a molded body made of a synthetic resin in this embodiment, and has a bottom surface 15a formed in the shape of a quadrangular housing located slightly above, and a front portion facing the front panel 3 is provided at the tray entrance 3a. An opening 16 is formed correspondingly, and an opening 17 is formed at the center of the bottom surface 15a. The opposite side edges face portions 15a ₁ and 15a ₂ to sandwich the opening 17 of the bottom portion 15a, a plurality of trays guides 18 disk tray 4 of the guide rail is engaged position regulating
a are formed at predetermined intervals in the front-rear direction, and a plurality of tray pressing guides 18 are provided on the inner surfaces of both side walls 15b and 15c.
b is formed to protrude at a required interval, and further on the inner surface front end side,
The stopper 19 of the disc tray 4 is formed so as to have lateral elasticity.

The disc tray 4 is guided by a tray guide 18a and a tray pressing guide 18b with respect to the frame 15, and slides in the front-rear direction (the direction indicated by the arrow X in the drawing). The tray 3 is taken in and out of the tray entrance 3a, and is stopped by the stopper 19 while being slid to the foremost portion, thereby preventing withdrawal.

The bottom surface 15a of the frame 15
The front edge surface portion 15a _3, sliding the disk tray 4 in the longitudinal direction, i.e., the loading mechanism 20 to perform the loading operation and the unloading operation is disposed. This loading mechanism 20 is shown in FIGS.
As shown in FIG. 3, a loading motor 21 fixed to the frame 15, a drive gear 22 driven to rotate in the forward and reverse directions by the loading motor 21, a support shaft 22a of the drive gear 22 are erected, and the frame 15 A gear lever 23 pivotally supported by a fulcrum shaft 23a erected near the fixed portion of the loading motor 21 so as to be able to swing, and a partial gear 23 provided on the gear lever 23.
b and a partial gear 24b meshing with the frame 15
Fulcrum shaft 2 provided upright on a substantially central portion of the front edge surface portion 15a ₃ of
The cam lever 24 includes a cam lever 24 which is rotated around the center 4a. The cam lever 24 is provided with an inclined cam body 25 for raising and lowering a disk rotation drive mechanism 30 and an optical pickup mechanism 40 described later. Loading motor 2
The drive pulley 21a fixed to one of the rotation shafts is connected to a driven pulley 27 pivotally supported on the fulcrum shaft 23 via a rubber belt 26 as a power transmission medium so as to be able to transmit power. The rotational force of the driven pulley 27 is transmitted to the drive gear 22 via the intermediate gear 28. The drive gear 22 is engaged with a J-shaped rack (not shown) of the disc tray 4 and The support shaft 22a is slidably fitted in the guide groove.

As described above, when the disc tray 4 is loaded, the straight portion of the J-shaped rack of the disc tray 4 is moved from the rear side to the front side by the drive gear 22 driven forward by the loading motor 21. By moving linearly toward the disk tray 4
Can be drawn horizontally into the exterior body 2, that is, into the frame 15. Then, by continuously driving the drive gear 22 in the forward rotation, the drive gear 22 is moved in an arc shape along the arc portion of the rack of the disc tray 4,
The circular motion of the drive gear 22 causes the gear lever 23 to swing.

Rotational force is transmitted from the partial gear 23b to the partial gear 24b of the cam lever 24 by the swinging motion of the gear lever 23, and the cam lever 24 is rotated clockwise in FIG. 2 around the fulcrum shaft 24a (shown by a two-dot chain line in FIG. 2). From the solid line direction). As a result, the cam body 25 of the cam lever 24 is also driven to rotate integrally, and corresponds to the lower surface side of the front portion of the disk tray 4 after the completion of the loading operation. The rotation of the cam body 25 of the cam lever 24 causes the disk rotation drive mechanism 3 to rotate, as described later.
0 and the optical pickup mechanism 40 are raised to the operating position.

The disk rotation drive mechanism 30 is configured as shown in FIGS. The disk rotation drive mechanism 30 includes a spindle motor 31 and a turntable 32 horizontally fixed to an upper end of a rotation shaft of the spindle motor 31. The spindle motor 31 is fixed to a movable chassis 33. ing.

The movable chassis 33 is a flat plate having a substantially quadrangular outer shape with a size capable of entering and exiting the opening 17 of the bottom surface 15a of the frame 15, and an opening 34 formed in the center. Front portion 3 on the front edge side of opening 34
The spindle motor 31 is fixed to the center of the spindle motor 3a, and insulator mounting portions 35a and 35b are provided on both sides of the rear end.

A carriage movement drive mechanism 50 for moving and driving the optical pickup mechanism 40 is attached to the movable chassis 33 on a side surface 33b on one side of the opening 34. The carriage movement drive mechanism 50
As shown in FIG. 2 and FIG.
And a drive gear 52 that is rotationally driven in the forward and reverse directions by the carriage drive motor 51, and intermediate gears 53a and 53b that connect the drive gear 52 and the carriage drive motor 51 so as to transmit power. The drive gear 52 is engaged with a carriage rack of the optical pickup mechanism 40, which will be described later.

A skew adjusting drive mechanism 60 for adjusting the skew of the optical pickup mechanism 40 is mounted on the rear surface 33c of the movable chassis 33 at the rear edge side of the opening. The skew adjustment drive mechanism 60 includes a drive motor 6
1 and a cam gear 62 that is rotationally driven in the forward and reverse directions by the drive motor 61. The cam gear 62 has an eccentric cam groove 63 formed therein. This cam gear 6
An operation member of a swing chassis, which will be described later, as a support member of the optical pickup mechanism 40 is engaged with the second cam groove 63.

The optical pickup mechanism 40 is shown in FIGS.
It is configured as shown in FIG. The optical pickup mechanism 40 includes an optical pickup 41 for a standard density disc such as a CD or a CD-ROM, and a DVD or an HD as described above.
An optical pickup 42 for a high-density disc such as a CD;
Object lenses 41a and 42a are attached to carriage 43 so as to be close to each other, and skew sensor 44 is attached to carriage 43.

The carriage 43 has a bearing 43a on one side.
The other side is provided with an engagement sliding portion 43b, and the guide shaft 45 is slidably inserted into the bearing portion 43a. Further, a rack 46 is mounted on the carriage 43 outside of the bearing 43 a in parallel with the guide shaft 45.

Then, as described above, the optical pickup 4
Carriage 4 on which skew sensor 44 is mounted
3 is slightly smaller than the movable chassis 33 described above, and is supported movably in the front-rear direction by a swinging chassis 48 having an opening 47 formed in the center. That is, the guide shaft 45 is stretched over the swing chassis 48 in the front-rear direction along one side edge 47 a of the opening 47, and the other side edge 47 of the opening 47 is
By engaging the engagement sliding portion 43b of the carriage 43 with b, the carriage 43 is supported movably in the front-rear direction within the opening 47 of the swing chassis 48.

The rocking chassis 48 is located substantially at the center of both sides, more specifically, at a position slightly forward of the center.
The swinging chassis 48 is supported on the movable chassis 33 by shaft pins 49a and 49b corresponding to the lower surface side.
The upper surface side of the carriage 43 including the skew sensor 42 and the skew sensor 44 faces the opening 34 of the movable chassis 33.
As described above, the swing chassis 48 is supported by the movable chassis 33 so that the rack 4 attached to the carriage 43 is supported.
6 is engaged with the drive gear 52 of the carriage movement drive mechanism 50 attached to the movable chassis 33. An operating pin 49c as an operating member is protruded rearward substantially at the center of the rear end of the oscillating chassis 48 so that the movable chassis 33 is movable.
Is engaged with the cam groove 63 of the cam gear 62 of the skew adjustment drive mechanism 60 attached to the rear part.

The oscillating chassis 48 supported on the movable chassis 33 by the shaft pins 49a and 49b.
Is biased in one direction with respect to the movable chassis 33 by a biasing member such as a tension coil spring and a washer (not shown) to prevent the axial pins 49a and 49b from rattling in the axial direction.

An ascending and descending drive plate 70 is mounted on the front upper surface of the movable chassis 33 which supports the swing chassis 48 in this manner. Projectors 71a, 71b and 71c, 71d are provided at both sides 70a and 70b of the elevation drive plate 70 at required intervals in the front-rear direction, and a cam pin 72 is provided substantially at the center of the front end face 70c.
Is protruded forward. The lifting drive plate 70 is attached to the front upper surface of the movable chassis 33 by a set screw 74 via a mount insulator 73 formed of an elastic member such as rubber.

The front end surface 71 of the lifting drive plate 70
As shown in FIGS. 5 and 6, the cam pin 72 protruding from c is a stepped pin having a small diameter at the front end and a head 72a at the tip, and a guide body 75 is fixed to the base. A spherical roller 76 formed of a resin material having elasticity such as polyoxymethyl (POM) is rotatably fitted to the cam pin 72. A split groove 76b is formed at the tip end of the shaft hole 76a of the spherical roller 76 so that the cam pin 72 can be fitted and engaged with the cam pin 72 from the tip end in a so-called patching state.
The spherical roller 76 does not slide in the axial direction in the fitted state because the cam pin 72 is a stepped pin.

As described above, the movable chassis 3 supporting the swing chassis 48 and mounting the lifting drive plate 70
3, at the rear end, are made to correspond to the opening 17 and secured by a set screw 74 through the mounting insulators 73 to the side edge surface portion 15a ₄ after the bottom portion 15a of the frame 15 described above. In addition, the lifting drive plate 70 is provided with protrusions 71a, 71b and 7 on both sides 70a and 70b.
1c, the engaging groove 15d formed to 71d on the front side of the opposite side edges face portions 15a ₁ and 15a ₂ of the frame 15, 15e and 1
5f, 15g, and the front projections 71a and 71
c is engaged with the engagement grooves 15d and 15f at the front, positioning in the front-rear direction is performed, and the projections 71b and 71d at the rear are provided.
The center of rotation is defined by the engagement between the rear engagement grooves 15e and 15g.

The front end face 70 of the lifting drive plate 70
c, the cam pin 72 is attached to the front edge surface 15a _{3 of the} frame 15.
Vertical guide slot 77a of a guide body 77 erected at
And the guide body 75 of the original part is inserted and engaged to perform horizontal positioning. The spherical roller 76 at the tip of the cam pin 72 is inserted into the cam groove 25a of the inclined cam body 25 of the cam lever 24 described above. It is inserted into and rolled.

As shown in FIGS. 1 and 3, a clamper support plate 81 is installed horizontally at the upper opening of the frame 15 so as to cross over the disk tray 4. Both ends are fixed to the left and right side plates of the frame 15. At the center of the clamper support plate 81, a disk clamper 82 is movably held in a predetermined range vertically, horizontally, and back and forth so as to be located directly above the turntable 32. The steel plate 83 is located at the center of the disc clamper 82.
The optical disk D is horizontally chucked on the turntable 32 by the steel plate 83 being attracted by the attracting force of a magnet built in the turntable 32.

In the disk drive device 1 configured as described above, the optical disk D is stored in the disk storage portion 11 of the disk tray 4 drawn out from the tray entrance 3a of the front panel 3 of the exterior body 2 by the operation of the loading drive mechanism 20. Then, when the loading operation is performed, the disk tray 4 is drawn into the exterior body 2, that is, the frame 15, and is moved. With this operation, the cam lever 24 is rotated as described above, and the cam groove 25a of the inclined cam body 25 is rotated.
The cam pin 72 located at the lower part of the
6 and is pushed upward along the cam groove 25a.
At this time, the spherical roller 76 is smoothly rotated with respect to the cam pin 72, so that the pushing is performed smoothly.

As a result, the lifting drive plate 70 is pivoted upward with the engagement portion of the rear projections 71b and 71d as a fulcrum, whereby the movable chassis 33 is mounted on the rear frame 15 via the mount insulator 73. It is moved upward with the fastening part as a fulcrum. The disk rotation drive mechanism 30 and the optical pickup mechanism 40 are raised by the upward movement of the movable chassis 33, and the optical disk D on the disk tray 4 in the state where the drawing operation is completed is placed on the turntable 32 so as to be picked up. The disc is separated from the disc tray 4 and chucked on the turntable 32 by the disc clamper 82.

In this state, the disk rotation drive mechanism 30 is driven, and the rotation of the turntable 32 causes the optical disk D to rotate.
Is rotated, and the optical pickup mechanism 40 operates to read or write information recorded on the optical disc D.

In the read or write mode of the recorded information on the optical disk D, the skew sensor 44 detects the objective lens 41a or 4 of the optical pickup 41 or 42 of the optical pickup mechanism 40 with respect to the optical disk D.
2a is detected. On the basis of the detection output from the skew sensor 44, the cam gear 62 driven forward and reverse by the drive motor 61 of the skew adjustment drive mechanism 60 is rotated by the swing chassis 48 on which the optical pickup mechanism 40 is mounted.
By pushing the operation pin 49c upward or downward, the swing chassis 48 is adjusted to swing vertically.

Then, by adjusting the inclination of the objective lens 41a or 42a of the optical pickup 41 or 42, skew adjustment is performed such that the optical axis of the laser beam of the objective lens 41a or 42a is perpendicular (90 °) to the optical disk D. Done. In this state, the reading or writing of the recording information on the optical disc D is performed, and the reading or writing of the recording information with high density and high accuracy can be performed.

Reading or writing of recorded information on the optical disk D is performed as described above. This state, that is, the optical disk D is placed on the turntable 32 of the disk rotation drive mechanism 30, chucked, and rotated. In this state, the disk tray 4 is drawn into the frame 15 and is held at both side edges by being sandwiched between the bottom surface 15a and the tray pressing guide 18b from above and below.

In this state, however, there is a slight gap between the upper surface of the both side edges of the disk tray 4 and the tray pressing guide 18b on the frame 15 side. Therefore, in the disk drive device 1 according to the present invention, the disk tray 4 can be fixedly held on the frame 15.

That is, in this example, the frame 15
A protrusion 91 is protruded from the upper surface of the inclined cam body 25 provided on the cam lever 24 which is supported on the cam lever 24, and is brought into contact with the lower surface of the disk tray 4 so as to be pushed upward, thereby pressing the disk tray 4 upward. The upper surface of the both side edges is pressed against and held by the tray pressing guide 18b on the frame 15 side.

The protrusion 91 can be integrally formed on the upper surface of the inclined cam body 25. Alternatively, the protrusion 91 may be formed of metal or synthetic resin and fixed to the upper surface of the inclined cam body 25. Good. Preferably, the projection 91 has a spherical shape.

As described above, the protrusion 9 is provided on the upper surface of the inclined cam body 25.
When the disc tray 4 is inserted into the frame 15, the protrusion 91 abuts on the lower surface of the disc tray 4 in a protruding manner so that the disc tray 4 is pressed against the tray holding guide 18b. It can prevent rattling. As a result, the vibration generated by the rotation of the optical disk D by the driving of the disk rotation driving mechanism 30 and the vibration generated by the seek of the optical pickup mechanism 40 cause the disk tray 4
Can be prevented from vibrating, and troubles such as interference between the optical disk D and the disk tray 4 and generation of noise when reading or writing recorded information on the optical disk D can be eliminated.

When the disc tray 4 is pulled out during unloading of the optical disc D, the opening 12 of the disc tray 4 corresponds to the inclined cam body 25 of the cam lever 24. The pull-out operation is smoothly performed without receiving the resistance due to 91.

In the above configuration, the projection 91 may be provided so as to protrude from the lower surface of the disk tray 4 so as to be in contact with the flat upper surface of the inclined cam body 25. Also in this case, the disc tray 4 is pushed up via the projection 91 in a state corresponding to the inclined cam body 25, and is held in pressure contact with the tray pressing guide 18b on the frame 15 side as described above. The same operation and effect as described above can be obtained.

In this embodiment, the disc tray 4
Is retracted and the optical disk D is driven by the disk rotation drive mechanism 3
In a state where the disc tray 4 is chucked on the turntable 32, unnecessary removal of the disc tray 4 is prevented. That is, the disk tray 4 is locked to the mechanism 30 by the ascending operation of the disk rotation drive mechanism 30, and unnecessary movement is prevented.

As an example of this configuration, as shown in FIG. 7, a locking pin 92 is protruded from the lifting drive plate 70 of the disk rotation drive mechanism 30 while the disk tray 4
, An engagement hole 93 is formed in a portion corresponding to the locking pin 92 in a retracted state. With this configuration, in the loading operation, the lifting drive plate 70 is rotated upward in a state where the disk tray 4 is retracted, so that the locking pin 92 is inserted and engaged in the engagement hole 93 of the disk tray 4, The disk tray 4 is positioned with respect to the disk rotation drive mechanism 30, and chucking of the optical disk D to the turntable 32 is performed stably and reliably. Further, even after the optical disc D is chucked, the disc tray 4 is prevented from moving unnecessarily by the engagement of the locking pin 92 and the engaging hole 93, and the engagement with the driving gear 22 of the loading mechanism 20 is caused by a failure or the like. Even if it comes off, it is held in the frame 15 without being pulled out unnecessarily.

As another example, as shown in FIG.
By providing a locking projection 94 on the lower surface side of the disk tray 4 and forming an engagement hole 95 in the lifting drive plate 70, the operation of the disk rotation drive mechanism 30 is performed in the same manner as in the above-described example. In other words, the disk tray 4 is positioned and locked with respect to the disk rotation drive mechanism 30 by inserting the locking projection 94 into the engagement hole 95 by the upward rotation of the lifting drive plate 70 and engaging it. it can.

In both cases, during the unloading operation, the disc rotation drive mechanism 30 is lowered, and the disc tray 4 is released from the locked state.
5 and is slidable, and an unloading operation is performed.

In each of the above embodiments, the members provided with the locking pins 92 and the engagement holes 95 are not limited to the lifting drive plate 70 of the disk rotation drive mechanism 30.
Any member such as the movable chassis 33 on the disk rotation drive mechanism 30 side may be used.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. In the embodiments, an example in which an optical disk such as a CD or a CD-ROM is used as an information recording medium is described. However, the present invention can be applied to various magneto-optical disk devices that record and / or reproduce a magneto-optical disk such as an MO as an information recording medium.
Further, in the above embodiment, the optical disk apparatus of the disk tray system for reproducing (reading) the information recorded on the optical disk D has been described. However, it is needless to say that the present invention can be applied to a recording-only apparatus which only records information. The present invention can also be applied to an optical disk device that can perform both recording and reproduction of information.

In the above-described configuration, the movable chassis 33 of the disk rotation drive mechanism 30 and the swing chassis 48 of the optical pickup mechanism 40 may be integrated, and the lifting drive plate 70 may be integrated. Is also good. Further, the configurations of the loading mechanism 20 and the elevating cam mechanism are not limited to those of the above-described embodiment, and may be any configuration that performs the same operation as the above-described operation.

In the above-described embodiment, an example in which the optical disk D such as a CD is used in a bare state has been described. However, the optical disk D is housed in a disk cartridge to be loaded and ejected. You may. As described above, the present invention is not limited to the above-described embodiment, and can be variously modified without departing from the gist thereof.

[0054]

As described above, according to the present invention, in a disk drive device for loading a disk by a disk tray, the loaded disk tray is configured to be fixedly held on the machine body side. The disc tray can be prevented from vibrating due to vibration or vibration caused by the seek of the pickup mechanism.
When reading or writing recorded information, troubles such as interference between the disk and the disk tray and generation of noise can be solved, and the reliability is significantly improved. In particular, the present invention has a great effect when applied to a disk drive device for a high-density disk such as a DVD or HD-CD rotating at a high speed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an internal structure of an example of a disk drive device according to the present invention.

FIG. 2 is a plan view of a main body of the disk drive device shown in FIG.

FIG. 3 is an exploded perspective view of a main body of the disk drive device shown in FIG.

FIG. 4 is an enlarged view of a cam mechanism of the disk drive device shown in FIG.

FIG. 5 is a vertical sectional side view in FIG. 4;

6 is an exploded perspective view of a cam pin portion of the cam mechanism shown in FIG.

FIG. 7 is an enlarged sectional view of a part of the disk drive device shown in FIG.

FIG. 8 is an enlarged sectional view of another example of the portion shown in FIG. 7;

FIG. 9 is a perspective view showing the external appearance of the disk drive device, in which the disk tray is stored.

FIG. 10 is a partially omitted perspective view showing a state where the disk tray is pulled out.

[Explanation of symbols]

4 disc tray, 15 frame, 20 loading mechanism, 24 cam lever, 25 inclined cam body, 30
Disk rotation drive mechanism, 31 spindle motor, 3
2 turntable, 40 optical pickup mechanism, 3
3 movable chassis, 70 lifting drive plate, 91 protrusion

Claims (3)

[Claims] A disk tray provided movably between a pull-out position and a storage position with respect to the apparatus main body, wherein a disk is mounted on the disk tray and is provided to a disk rotation drive mechanism in the apparatus main body. What is claimed is: 1. A disk drive device to be loaded, wherein the disk tray in a loaded state is fixedly held on the device body side. 2. The apparatus according to claim 1, wherein the cam mechanism presses the disc tray and holds the disc tray fixedly to the apparatus main body in accordance with an ascending drive operation of a cam mechanism that drives the disc rotation drive mechanism up and down. 2. The disk drive device according to claim 1, wherein: 3. A protrusion is provided on one of an upper surface of a cam mechanism for driving the disk rotation drive mechanism up and down and a lower surface of the disk tray opposed to the upper surface, and the cam is provided via the protrusion. 2. The disk drive device according to claim 1, wherein the disk tray is pressed by a mechanism and fixedly held on the device main body side.