WO2003085662A1

WO2003085662A1 - Disc drive

Info

Publication number: WO2003085662A1
Application number: PCT/JP2003/004397
Authority: WO
Inventors: Shoji Takahashi; Maki Wakita
Original assignee: Citizen Watch Co., Ltd.
Priority date: 2002-04-08
Filing date: 2003-04-07
Publication date: 2003-10-16

Abstract

A disc drive comprising a disc holding pawl (51) being inserted into the central hole (1a) of a disc to engage with the disc thus holding the disc on a turntable (41). The disc holding pawl (51) engages with the disc or disengages therefrom under a state where the disc is contained in the body of disc drive (10). The disc holding pawl (51) engages with the disc by the movement of the turntable (41) toward the disc.

Description

Technical field

The present invention relates to a method for optically writing information on a disk-shaped recording medium such as an optical disk.

The invention relates to a disk drive for writing or reading. Rice field

Background art

In a disk drive of this type, a conventional mechanism for holding a disk on a turntable includes, for example, a self-charging type as disclosed in Japanese Patent Application Laid-Open No. 2001-26664. Is known.

This type of disk holding mechanism includes, for example, a disk holding claw (movable holding member) as disclosed in Japanese Patent Application Laid-Open No. 2001-273636, which is provided at the center of the upper surface of the turntable. The disk is held on the turntable by engaging the center hole of the disk with the disk holding claw. The disk holding claw is freely expandable and contractible in the radial direction, and is constantly urged in the outer diameter direction by a spring member to expand. Then, by manually pressing the center hole portion of the disc against the disc holding claw, the holding claw can be shrunk in the inner diameter direction and can pass through the disc. After that, the disk holding claw is expanded again to some extent to hold the disk on the top of the evening table.

As described above, in the self-checking type disk holding mechanism using the disk holding claws, in order to manually check the disk, the evening table and its drive motor, the optical head, and the like are used. The components such as the drive mechanism can be freely pulled out to the front of the device body integrally with the disk tray. On the other hand, the disk holding mechanism disclosed in Japanese Patent Application Laid-Open No. HEI 5-1-1505 The table and the clamper cooperate to sandwich the disc. That is, a clamper is provided inside the main body of the device so as to be able to move up and down opposite to the turntable, and by the lowering operation of the clamper, the disc on the evening table is moved between the clamper and the evening table. It is sandwiched and held.

Although not described in Japanese Patent Application Laid-Open No. H5-101505, in general, components such as a turntable and its driving mode and an optical head and its driving mechanism are mounted on an internal substrate. Have been. This internal substrate is fixed inside the main body of the apparatus via an elastic body such as rubber, and a configuration is adopted in which the vibration accompanying the high-speed rotation of the disk and the table is absorbed by the elastic body.

As described above, in the self-checking type disk holding mechanism disclosed in Japanese Patent Application Laid-Open No. 2001-266642, an evening table and its driving module, optical Pull out the head and its drive mechanism and other parts together with the disk tray from the main unit, and mount the disk.

At this time, if excessive force due to the carelessness of the operator acts on components (for example, turntable) drawn out of the device body, the components (for example, disk tray) drawn out of the device body Could be damaged.

On the other hand, the clamp-type disk holding mechanism disclosed in Japanese Patent Application Laid-Open No. H5-101505 has a structure in which a clamper is moved up and down inside the apparatus main body and a disk is pressed into an evening table. Therefore, it is necessary to secure a space for moving the clamper in the apparatus main body. The turntable is mounted on the internal substrate as described above and is fixed inside the device body via an elastic body such as rubber, so that the amount of deformation of the elastic body is taken into account to secure a large amount of movement of the clamper. There is a need. Therefore, there is a limit to how thin the device can be.

In recent years, with regard to a disk drive having a self-checking type disk holding mechanism, thin products integrated into a device main body having a thickness of 12.7 mm have become mainstream in recent years. However, for the above reasons, disk drive devices with a clamp-type disk holding mechanism However, few of them have achieved thinning with a thickness of 12.7 mm, and the current situation is that they have not been further reduced.

The present invention has been made in view of such circumstances, and a first object is to improve durability. A second object is to provide a disk drive capable of responding to a demand for thinning. Disclosure of the invention

A disk drive according to the present invention is a disk drive comprising: a device main body capable of storing a disk having a central hole; and an evening table for rotating and driving the disk inside the device main body. A disc holding claw inserted into a center hole of the disc and engaged with the disc to hold the disc on the turntable; and a disc holding claw in a state where the disc is stored in the apparatus main body. And a holding claw engaging / disengaging mechanism for engaging or disengaging the claw with the disk.

Since the disc is held on the turntable by the disc holding claws in this way, the disc is stored in the apparatus body, and the disc is mechanically held on the table by the holding claw engaging / disengaging mechanism. be able to. As a result, there is no danger of continuous pressing force or excessive force being applied to various parts including the evening table, and the safety of the equipment is dramatically improved.

Here, the disk holding claw can be configured to be movable in the radial direction and urged radially outward by the urging means.

In addition, the holding claw engaging / disengaging mechanism should be a mechanism that engages with or releases the disc holding claw from the disc by moving at least the table with respect to the disc stored in the device body. Can be.

With this configuration, even if the evening table is supported via an elastic body, the necessary amount of movement of the turntable can be determined without considering the amount of expansion and contraction of the elastic body. Engage the disk holding claw with the disk by moving the table Can be. As a result, the device can be made thinner.

In addition, it is preferable to provide a restricting means for restricting the movement of the disk in the moving direction when the turntable moves to engage with the disk holding claw. The holding claw engaging / disengaging mechanism includes a motor for rotating the turntable (turntable driving motor) and a subframe for directly or indirectly supporting the turntable. The disk holding claw and the disk can be engaged and disengaged by moving the disk in the separating direction.

Further, the holding claw engaging and disengaging mechanism may be configured to include a slide member that is reciprocally movable, and a cam mechanism that converts the reciprocal movement of the slide member into a movement of the sub-frame toward or away from the disk.

Here, the cam mechanism can be configured to include a cam groove formed in the slide member and a cam follower provided in the subframe and engaging with the cam groove.

In addition, the sub-frame is swingably supported at a predetermined position as a swing fulcrum, and the holding claw engaging / disengaging mechanism is configured to move the sub-frame to engage or disengage the disc holding claw with the disk. It can also be a mechanism that performs.

Further, the disk drive device of the present invention includes a pickup for writing or reading information on or from a disk, a guide member for slidingly guiding the pickup, and a turntable and a guide member that are provided in a predetermined manner. It is also possible to adopt a configuration in which this portion is supported as a pivot point so as to be pivotable.

In such a configuration, the holding claw engaging / disengaging mechanism swings the guide member and the evening table around the swing fulcrum to engage or disengage the disc holding claw with the disk. It can be.

Here, the pickup is controlled so as to move in advance to the vicinity of the pivot point when the guide member and the table swing to the position where the disc is disengaged by the holding claw engaging / disengaging mechanism. Is preferably performed.

Pickups incorporate complex components to record or read information. Therefore, it is inevitable that the structure becomes thick and large. By arranging such thick and large components in the vicinity of the fulcrum, it is possible to reduce the thickness of the part of the subframe away from the fulcrum, and to provide sufficient pivoting force to engage and disengage the disk. The rook can be realized in a thin device body. ,

In the configuration described above, the evening table and the guide member can be supported by the subframe. Further, the holding claw engaging / disengaging mechanism may be configured to swing the sub-frame around the swing fulcrum.

Also in this case, the holding claw engagement / disengagement mechanism includes one slide member that can reciprocate freely, and a cam mechanism that converts the reciprocation of the slide member into a movement of the sub-frame toward or away from the disk. It can be configured.

The cam mechanism may include a cam groove formed in the slide member and a cam follower provided in the subframe and engaging with the cam groove.

Here, it is preferable that the sub-frame has a pickup driving motor for moving the pickup mounted near the pivot point. By arranging in this manner, it is possible to apply a large and large torque motor to the pickup drive motor. The sub-frame has an upper surface facing the disk and, when swung in a direction away from the disk storage position, such a bottom surface that the bottom surface of the sub-frame is substantially parallel to the floor surface of the apparatus main body. It can also be inclined.

With this configuration, it is possible to realize a sufficient swing stroke for disengaging the disk in the thin device body, while avoiding the possibility that the bottom surface of the subframe interferes with the floor surface of the device body. Becomes possible.

Further, in a state where the sub-frame is swung in a direction away from the disk storage position, the base end of the sub-frame is arranged such that the upper surface of the sub-frame on the base end side of the swing fulcrum is substantially parallel to the disk. The upper surface can also be inclined.

As a result, it is possible to realize a sufficient swing stroke to disengage the disk in the thin device body, while avoiding interference between the upper surface of the subframe and the disk. Becomes

The evening table is driven to rotate by a turntable drive motor. This evening table-driven motor usually has a motor board at the bottom. It is preferable that the motor base plate is formed by cutting out an arbitrary area on the tip side from the center of the turntable driving motor. This configuration is particularly effective when the sub-frame has the turntable drive motor mounted closer to the tip than the swing fulcrum.

As a result, it is possible to realize a sufficient swing stroke for disengaging the disk in the thin device body, while avoiding interference between the motor board and the floor of the device body. Become.

A notch may be formed at the bottom of the device body to avoid interference with the subframe.

In the present invention having the above configuration, the subframe can be supported at two positions on both sides as swing supports. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1A is a front sectional view of the disk drive device according to the first embodiment of the present invention. FIG. 1B is a right side view of a slide member incorporated in the disk drive device. FIG. 2A is a front sectional view showing the disk drive device in an operation state different from that of FIG.

FIG. 2B is a right side view of the slide member in the operation state of FIG. 2A.

FIG. 3A is a front sectional view showing the disk drive device in an operation state different from those in FIGS. 1 and 2.

FIG. 3B is a right side view of the slide member in the operation state of FIG. 3A.

FIG. 4 is a perspective view showing a configuration of a chuck unit in the disk drive device. FIG. 5 is a side view showing an example of a structure in which a slide member has a disk opening / closing function. FIG. 6A is a front sectional view showing a disk drive device according to a second embodiment of the present invention.

FIG. 6B is a right side view of a slide member incorporated in the disk drive device. FIG. 7 is a perspective view showing a disk drive device according to the third embodiment of the present invention. FIG. 8 is a plan view of the disk drive.

9A to 9C are diagrams showing components for swinging a subframe of the disk drive device.

Fig. 10 shows the configuration of the same disk drive device cut along the line A-A in Fig. 8 in order to explain the arrangement of the pickup and big drive motors in the same disk drive device and the shape of the subframe. FIG.

FIG. 11 is a bottom view of the subframe and its mounted components in the same disk drive device.

FIG. 12 is a perspective view showing a disk drive device according to a fourth embodiment of the present invention. FIG. 13 is a plan view of the disk drive.

FIG. 14 is a side view showing a slide member of the disk drive device.

FIG. 15 is a cross-sectional view schematically showing a cross section of the disk drive device. BEST MODE FOR CARRYING OUT THE INVENTION

Preferred embodiments according to the present invention will be described with reference to the drawings.

1A to 5 are diagrams for explaining a disk drive device according to a first embodiment of the present invention.

The disk drive includes a disk tray 11, a subframe 20, and a slide member 30 inside a device main body 10.

The main unit 10 is formed in a box shape with a bottom plate 10a, a top plate; L0b, left and right side plates 10c, 10d, a back plate 10e, and a front plate (not shown). On the front plate (not shown), a disk inlet is formed. Disc tray 1 1 is inserted from the disc slot It has a function of guiding the device 1 and arranging it at an appropriate position set inside the device main body 10.

The subframe 20 is supported by a support pole 22 via a guide push 21 below the disc 1 placed on the disc tray 11 and is movable along the support pole 22. I have. The guide push 21 is urged from both upper and lower directions by an elastic body 23 formed of a spring member and a rubber member. The elastic body 23 has a function of absorbing vibration transmitted from the subframe 20.

The subframe 20 is equipped with a spindle motor 40 (evening table driving motor). A disc-shaped evening table 41 is mounted on the rotating shaft of this spindle motor 4◦. is there. Further, a chuck portion 50 having a disc holding claw 51 is provided at the center of the evening product 41.

The subframe 20 includes a spindle motor 40, a pickup (not shown) for writing and reading information to and from the disc, and a pickup for moving the pickup in the radial direction of the disc. Parts such as a drive motor (not shown) are mounted.

As shown in FIG. 4, the chuck 50 is provided so as to protrude from the center of the evening table 41. A plurality (three in the figure) of disk holding claws 51 are incorporated at regular intervals on the peripheral surface of the chuck portion 50. The disk holding claw 51 is movable in the radial direction, and is urged radially outward by a coil spring 52 (biasing means) built in the chuck portion 50.

In the present embodiment, the same as the disk chucking mechanism disclosed in Japanese Patent Application Laid-Open No. 2001-173699 is used as the check section 50, but the present invention is not limited to this. It is not something to be done.

A center hole 1a is formed in the center of the disc 1, and when the chuck portion 50 is pressed against the center hole la, the disc holding claw 51 opposes the urging force of the coil spring 52. Move radially inward. As a result, the chuck 5 0 is passed through and the disc 1 comes into contact with the turntable 41. At this time, the disk holding claws 51 protrude radially outward due to the urging force of the coil springs 52, and hold the disk 1 on the overnight pull 41.

The top plate 10b has a notch hole 12 formed in a portion facing the chuck portion 50. Thereby, even if the chuck portion 50 rises beyond the height position of the top plate 1 Ob, it is possible to avoid interference with the top plate 10b.

Further, on the lower surface of the top plate 10b, a disk support portion 13 is formed of a flexible member such as felt or rubber. The disk support portion 13 functions as a restricting means for supporting the upper surface of the disk 1 and restricting its movement in the process of holding the disk 1 on the evening table 41 as described later.

The slide member 30 has a shape in which side plates are erected from both side edges of the substrate, and is supported at the bottom of the apparatus main body 10 so as to be movable in the front-rear direction. As shown in FIG. 1B, a cam groove 31 is formed on the side plate of the slide member 30. On the other hand, as shown in FIG. 1A, a pin-shaped cam follower 24 extends from the side surface of the subframe 20, and the force follower 24 is engaged with the cam groove 31.

The cam groove 31 has a disc insertion position 3 1a, a disc engagement position 3 lb, and a disc rotation drive position 3 1c set at their respective height positions, and each position is connected by a continuous groove. It has become. The cam follower 24 engages with these positions of the cam groove 31 as the slide member 30 moves in the front-rear direction.

Here, the disk insertion position 3 1a of the cam groove 31 is the lowest position, and as shown in FIG. 1B, when the cam follower 24 is engaged with the disk insertion position 3 1a, as shown in FIG. As shown in A, the disc holding claw 51 is located below the disc placed on the disc tray 11.

The disc engaging position 31b of the cam groove 31 is the highest position. When the cam follower 24 engages the disc engaging position 31b (see Fig. 2B), the disc is held against the disc 1. The engagement of the claws 51 is realized (see FIG. 2A). At this time, The upper surface of 1 is in contact with the disk support 13 formed on the lower surface of the top plate 1 Ob. Also, the disk rotation drive position 3 1c of the cam groove 31 is set slightly below the disk engagement position 3 lb, and the cam follower 24 engages with the disk rotation drive position 3 1c. At this time (see Fig. 3B), the disc 1 held on the unit 41 is separated from both the disc support 13 formed on the lower surface of the top plate 10b and the disc tray 11 Then, a state in which the table and the evening table 41 can be rotated at high speed is formed (see FIG. 3A).

In the disk rotation drive position 31c, the width of the cam groove 31 is widened, and a slight vertical displacement of the cam follower 24 is allowed. This makes it possible for the elastic body 23 to absorb and absorb the vibration when the disk 1 is driven to rotate at high speed. As shown in FIG. 1B, the slide member 30 is formed with a rack portion 32 extending rearward, and a binion gear 33 is engaged with the rack portion 32. The pinion gear 33 is attached to a rotating shaft of a driving motor 34 mounted inside the apparatus main body 10, and is rotated by the driving motor 34. Then, as the pinion gear 33 rotates, the slide member 30 moves in the front-rear direction integrally with the rack portion 32.

As described above, in the present embodiment, the holding claw engaging / disengaging mechanism is formed by the slide member 30, the driving motor 34, and the cam mechanism including the power groove 31 and the cam follower 24. The holding claw engaging / disengaging mechanism is a mechanism for engaging the disc holding claw 51 with the disc 1 or executing the disengagement thereof.

Now, in the state shown in FIG. 1A, for example, the distance a between the chuck portion 50 and the disk 1 is 0.5 mm, the height b of the chuck portion 50 is 2.1 mm, and the disk support portion 13 is If the distance c from the disk 1 is set to 1.0 mm, the amount of movement of the subframe 20 required for the disk holding claws 51 to engage with the disk 1 is a + b + c = 3. 6 mm. It is not necessary to consider the movement of the elastic body 23 to this movement amount. Therefore, the device can be made thinner.

Next, a disk chucking operation of the disk drive device having the above-described configuration, The release operation will be described.

First, as shown in FIG. 1B, when the cam follower 24 provided on the subframe 20 is engaged with the disk insertion position 31 a of the cam groove 31 formed on the slide member 30, the disk tray The disk holding claw 51 is located below the upper surface of 11 (see FIG. 1A).

In this state, the disk 1 is inserted from a disk inlet (not shown) provided on the front of the apparatus main body 10. The inserted disc 1 is guided by the disc tray 11, and is disposed at a position where the center hole 1 a faces the chuck portion 50 provided on the turntable 41.

Next, when the drive motor 34 is driven to rotate the pinion gear 33 in the counterclockwise direction in FIG. 1B, the rack portion 32 fitted to the pinion gear 33 moves rightward in FIG. At the same time, the slide member 30 moves to the right in FIG. Then, the cam follower 24 provided on the sub-frame 20 engages with the disk engaging position 3 lb of the cam groove 31 formed on the slide member 30 (see FIG. 2B).

In the course of this operation, the spindle motor 40, the cable table 41, and the chuck portion 50 are moved up along the support pole 22 together with the subframe 20. Then, the disc holding claw 51 comes into contact with the peripheral portion of the center hole 1a of the disc 1 and pushes the disc 1 upward.

Thereafter, the upper surface of the disk 1 is supported by being in contact with a disk support portion 13 formed on the top plate 1 Ob. When the chuck portion 50 further rises from this state, the central hole 1a of the disk 1 is also pressed by the peripheral portion, and the disk holding claw 51 is pushed inward in the radial direction. As a result, when the disk holding claw 51 passes through the center hole 1a of the disk 1, the disk holding claw 51 moves radially outward with the urging force of the coil spring 52 and engages with the disk. With the above operation, the disk 1 is held on the upper surface of the turntable 41 (see FIG. 2A).

Next, drive the drive motor 34 to move the binion gear 33 counterclockwise in FIG. 2B. When rotated, the rack portion 32 engaged with the pinion gear 33 moves to the right in the same figure, and the slide member 30 moves integrally with the rack portion 32 to the right in the same diagram. When the cam follower 24 provided on the sub-frame 20 is engaged with the disk rotation drive position 3 lc of the cam groove 31 formed on the slide member 30 (see FIG. 3B), the drive motor 34 is disengaged. Stop.

In this state, the disc 1 held on the evening table 41 is placed at an intermediate position where it does not come into contact with any of the disc tray 11 and the disc support 13 (FIG. 3A). At this position, the spindle motor 40 is driven to rotate the disk 1 at a high speed, and upward reading and writing are performed by an optical head (not shown). If the disk 1 has a distortion, vibration may occur with high-speed rotation. Since this vibration is absorbed by the elastic body 23 that elastically supports the subframe 20 from above and below, there is no possibility that external peripheral devices will be affected.

In addition, as a result of the sub frame 20 moving up and down slightly due to the vibration, the cam follower 24 may come into contact with the inner edge of the cam groove 31, and the vibration may be transmitted to the apparatus body 10 via the slide member 30. . Therefore, a flexible member such as felt rubber is interposed between the slide member 30 and the apparatus main body 10 or a similar member is provided at the inner edge of the force groove 31 at the disk rotation drive position 31c. It is preferable to incorporate a flexible member and to absorb vibration by the flexible member.

To eject the disc 1 inserted into the main unit 10, drive the drive motor 34 and rotate the pinion gear 33 clockwise in FIG. 3B. Then, the rack portion 32 engaged with the pinion gear 33 moves to the left in the drawing, and the slide member 30 moves integrally with the rack portion 32 to the left in the drawing. When the cam follower 24 provided on the sub-frame 20 engages with the disk insertion position 31 a of the cam groove 31 formed on the slide member 30 (see FIG. 1B), the drive motor 3 Stop 4.

During this operation, the spindle motor 40, The pill 41, and the chair, J, and link portions 50 descend along the support pole 22, and the disk 1 is placed on the upper surface of the disk tray 11. Further, the engagement between the disk holding claw 51 and the disk 1 is released, and the disk holding claw 51 is disposed below the upper surface of the disk tray 11 (FIG. 1A). In this state, the disc is ejected from the apparatus main body 10 by an unloading mechanism (not shown).

FIG. 5 is a side view showing an example of a structure in which a slide member has a disk unloading function. -On the slide member 30 shown in the figure, a disc push-out portion 60 is formed, which can be contacted from behind with the disc 1 housed in the apparatus main body 10 while being arranged in the disc tray 11. The cam groove 31 extends rearward at the same height continuously from the disc insertion position 31a, and the rear end is set to the ejection position 31d of the disc 1.

When the drive motor 3 is driven and the pinion gear 33 is rotated clockwise in FIG. 5, the rack portion 32 engaged with the pinion gear 33 moves leftward in FIG. Moves together with the rack part 32 to the left in the figure. Then, when the cam follower 24 provided on the sub-frame 20 is engaged with the discharge position of the cam groove 31 formed on the slide member 30, the drive motor 34 is stopped.

In this operation process, the disc push-out portion 60 formed on the slide member 30 comes into contact with the disc 1 from behind, pushes the disc 1 forward, and discharges it from the disc inlet 61.

6A and 6B are views showing a disk drive according to a second embodiment of the present invention. In the components shown in these figures, those corresponding to the components shown in FIGS. 1A to 5 described above are denoted by the same reference numerals.

In the disk drive device shown in the figure, the sub-frame 20 is configured to be swingable about a swing fulcrum 70. The swing fulcrum 70 is fixed via an elastic body 71 made of a flexible member provided on the floor surface of the apparatus main body 10, and the vibration transmitted to the sub-frame 20 is applied to the swing support 70. It is configured to be absorbed by sexual body 71. The swing fulcrum 70 is not limited to one location, and may be installed at a plurality of locations on a straight line.

A cam follower 24 extends from a side edge of the sub-frame 20 facing the swing fulcrum 70. The cam follower 24 is engaged with a cam groove 31 formed in the slide member 30 as shown in FIG. 6B.

Further, a rack portion 32 is formed to extend rearward on the slide member 30, and a pinion gear 33 is engaged with the rack portion 32. The pinion gear 33 is attached to a rotating shaft of a driving motor 34 mounted inside the device main body 10, and is rotated by the driving motor 34.

When the slide member 30 moves forward and backward integrally with the rack portion 32 with the rotation of the pinion gear 33, the engagement position of the cam follower 24 with the cam groove 31 changes, and the sub-frame 20 is Move. Then, the spindle motor 40, the turn tape 41, and the chuck 50 move together with the subframe 20. By this operation, the disc holding claws 51 engage with the disc 1 housed in the apparatus main body 10, and are held on the evening table 41.

At this time, the plurality of disc holding claws 51 come into contact with and engage with the inner edge portion of the center hole 1a of the disc 1 in order. Therefore, the disk holding claw 51 can be engaged with the disk 1 with a smaller pressing force than when the disk holding claw 51 is simultaneously engaged with the disk.

The vibration of the sub-frame 20 may be transmitted to the slide member 30 to the apparatus main body 10 via the cam follower 24 and the cam groove 31. Therefore, a flexible member such as felt or rubber is interposed between the slide member 30 and the apparatus main body 10 or the inner peripheral portion of the cam groove 31 at the disk rotation drive position 31c is provided with these flexible members. It is preferable to incorporate a member so that the flexible member absorbs vibration. 7 to 11 are views showing a disk drive according to a third embodiment of the present invention. It should be noted that, in the components shown in these figures, FIG. 1A to FIG. The same reference numerals are given to components corresponding to the components shown in FIG.

The subframe 20 is equipped with a spindle motor 40 (a motor drive motor) near the tip, and a disk-shaped motor table is mounted on the rotating shaft of the spindle motor 40. 4 1 is installed. In the center of the evening table 41, a chuck portion 50 having a disc holding claw 51 is provided.

The subframe 20 is provided with a pickup 80 for writing or reading information to or from a disc, and a pickup drive module 81 for moving the pickup 80 in the radial direction of the disc. The pickup 80 is slidably guided on the subframe 20 by a guide rail 82 (guide member), and moves in the radial direction of the disk along the guide rail 82.

In the present embodiment, similarly to the second embodiment shown in FIG. 6, the sub-frame 20 is configured to be swingable around a pivot 70 provided at two places. As shown in FIG. 9C, each of the pivots 70 is formed by an elastic body 71 made of a flexible member provided on the floor of the apparatus main body 10, and the vibration transmitted to the sub-frame 20. Is absorbed by this elastic body 71. In the disk drive device of the present embodiment, each of these swing fulcrums 70 is formed on both sides of the sub-frame 20.

Further, as shown in FIG. 9A, the distal end of the sub-frame 20 is swingably supported by a support shaft 91 via a flexible elastic body 90. The elastic body 90 has a function of absorbing vibration transmitted to the subframe 20. The support shaft 91 is provided on the floor of the apparatus main body 10, and a cam member 92 is rotatably fitted on the support shaft 91. As shown in FIG. 9B, the cam member 92 includes a spiral cam 92 a and a gear 92 b, and the cam 92 a contacts the lower surface of the elastic body 90. The elastic body 90 is urged from above by a spring member 93, and the state of contact with the cam 92a is maintained by this urging force. As shown in Fig. 9A, a motor 94 for swinging the subframe 20 is installed on the floor of the main body 10 of the apparatus, and is mounted on the drive shaft of the motor 94. The driving gear 94 a meshes with the gear 92 b of the cam member 92. The rotation of the motor 94 is transmitted to the cam 92a via the gears 94a and 92b, and when the cam 92a rotates, the elastic member 90 moves up and down according to the spiral shape, and the subframe Swing the tip of 20. With this swing, the disc holding claw 51 engages or disengages from the disc 1 stored in the apparatus main body 10 as shown in FIG. When the disk holding claw 51 is engaged with the disk 1, the disk 1 is supported by the top plate 10b of the apparatus main body 1.

The pickup driving mode 81 is controlled by a control circuit (not shown) so that the pickup 80 is moved and arranged in advance in the vicinity of the swing fulcrum 70 when the subframe 20 swings as described above. ing.

In addition, the pickup drive motor 81 is mounted near the pivot 70. By arranging the pickup 80 and the pick-up drive module 81 near the pivot point 70, the bottom surface 20a of the subframe 20 can be inclined so as to become thinner toward the tip. (See Figure 10). When the sub-frame 20 is swung in a direction away from the disk 1, the bottom surface 20a of the sub-frame 20 is substantially parallel to the floor surface of the bottom plate 10a of the apparatus body 10. If the angle is set so that the bottom surface of the sub-frame 20 and the bottom plate 10a of the main unit 10 are prevented from interfering with each other, the swing stroke sufficient to disengage the disk 1 can be reduced. It can be realized in the device main body 10 of the shape.

In addition, since the pickup drive motor 81 is mounted near the fulcrum 70, the movement stroke associated with the swing is shortened, so that a relatively large and large torque motor can be used. It can also be applied to

Further, the base-side upper surface 2 Ob of the sub-frame 20 is inclined so as to be substantially parallel to the disk 1 in a state of being moved in a direction away from the disk 1. As a result, while avoiding interference between the base-side upper surface 20 b of the subframe 20 and the disk 1, a sufficient stroke for engaging and disengaging the disk 1 is provided to the thin device main body 10. It can be realized within. By the way, a motor base plate 42 is usually mounted on the bottom of the spindle motor 40 by fasteners 43 such as screws. However, in reducing the thickness of the apparatus main body 10, the thickness of the motor-type pace plate becomes an obstacle. Therefore, in the present embodiment, as shown in FIGS. 10 and 11, the motor base plate 42 is partially cut away from the center of the spindle motor 40 at the tip end side, so that the cutting is performed. The region where the notched portion 42a is formed is made thin.

As a result, while avoiding interference between the motor base plate 42 and the bottom plate 10a of the apparatus main body 10, a sufficient swing stroke for engaging and disengaging the disc 1 is provided within the thin apparatus main body 10 It can be realized by. As a result of partially cutting out the base plate 42, a part of the bottom of the spindle 40 is partially opened (see FIG. 11), but there is a practical problem in our experiments. Did not.

The notched area 42 a is formed by the thickness of the main body 10, the dimensions and the rotation angle of the subframe 20, the position of the swing fulcrum 70, and the subframe 20 of the spindle motor 40. It can be set arbitrarily in consideration of the position above.

FIGS. 12 to 15 are views showing a disk drive device according to a fourth embodiment of the present invention. Note that among the components shown in these drawings, those corresponding to the components shown in FIGS. 1A to 11 shown above are denoted by the same reference numerals.

The subframe 20 has the same configuration as that of the third embodiment shown in FIG.

In other words, the subframe 20 is equipped with a spindle motor 40 (a motor drive module) near the tip, and a disk-shaped motor is mounted on the rotation shaft of the spindle motor 40. Table 41 is attached. At the center of the evening table 41, a chuck 50 having a disc holding claw 51 is provided.

The subframe 20 is provided with a pickup 80 for writing or reading information to or from the disk 1, and a backup drive module 81 for moving the pickup 80 in the radial direction of the disk. The pickup 80 is slidably guided on the sub-frame 20 by a guide rail 82 (guide member). 8 Move in the radial direction of the disk along 2.

Also in the present embodiment, similarly to the second embodiment shown in FIG. 6, the sub-frame 20 is configured to be swingable around a pivot 70 provided at two locations. Each swing fulcrum 70 is formed by an elastic body 71 made of a flexible member provided on the floor surface of the apparatus main body 10 in the same manner as shown in FIG. The elastic body 71 absorbs the light. Also in the disk drive device of the present embodiment, each of these swing fulcrums 70 is formed on both sides of the sub-frame 20.

Further, in the present embodiment, as shown in FIG. 15, the distal end portion of the sub-frame 20 is also allowed to swing freely by an elastic body 100 made of a flexible member provided on the floor of the device main body 10. I support it. The distal end of the sub-frame 20 swings up and down so as to compress the elastic body 100. The elastic body 100 has a function of absorbing vibration transmitted to the sub-frame 20 when writing or reading information to or from the disk 1 by the pickup 80.

The apparatus main body 10 is provided with one slide member 110 that is reciprocally movable in the front-rear direction on the side of the sub-frame 20.

As shown in FIG. 4, a cam groove 111 is formed on a side surface of the slide member 110. On the other hand, a pin-shaped cam follower 112 extends from the side surface of the subframe 20 as shown in FIG. 12, and the cam follower 112 is engaged with the cam groove 111.

The cam groove 1 1 1 has a disc insertion position 1 1 la, a disc engagement position 1 1 lb, and a disc rotation drive position 1 1 1 c set at their respective height positions. It has a shape connected by grooves. The cam follower 112 engages with these positions of the cam groove 111 as the slide member 30 moves back and forth.

Here, the disk insertion position 1 1 1a of the cam groove 1 1 1 is the lowest position, and when the cam follower 1 1 2 is engaged with this disk insertion position 1 1 1a, the tip of the sub-frame 20 Swings downward. When subframe 20 is in this swing position, The operation of inserting the disc 1 becomes possible. Further, with the downward swinging operation, the engagement of the disk holding claw 51 with the disk 1 is released.

The disc engaging position 1 1 1b of the cam groove 1 1 1 is the highest position, and when the cam follower 1 1 2 engages with the disk engaging position 1 1 1b, the leading end of the sub-frame 20 Swings upward. With the upward swinging operation, the disc holding claw 51 engages with the disc 1. At this time, the upper surface of the disk 1 is in contact with a disk support (not shown) formed on the lower surface of the top plate of the apparatus main body 10.

The disk rotation drive position 1 1 lc of the cam groove 1 1 1 is set slightly below the disk engagement position 1 1 lb, and the cam follower 1 1 2 is located at the disk rotation drive position 1 1 lc. When engaged, the disc 1 held on the evening table 41 can be moved to one of the disc support (not shown) and the disc tray (not shown) formed on the lower surface of the top plate of the apparatus main body 10. To form a state that can be rotated at high speed together with the evening table 41.

In the disk rotation drive position 1 1 1 c, the width of the cam groove 1 1 1 1 is widened, and a slight vertical displacement of the cam follower 1 1 2 is allowed. This makes it possible for the elastic body to absorb and absorb the vibration when the disk 1 is driven to rotate at high speed. As shown in FIG. 14, a rack portion 113 is formed on the slide member 110, and a pinion gear 114 shown in FIGS. 12 and 13 is formed on the rack portion 113. They are interlocking. The pinion gear 114 is rotatably supported by a support shaft 114 a protruding from the bottom of the apparatus main body 10. The pinion gears 114 are rotatably driven by drive motors 115 provided in the apparatus main body 10. Then, with the rotation of the pinion gear 114, the slide member 110 moves in the front-rear direction integrally with the rack part 113.

Further, the apparatus main body 10 is provided with sensors 1 16 a and 1 16 b for detecting the front and rear moving ends of the slide member 110, and these sensors 1 16 a and 1 16 b are provided. The control circuit (not shown) stops the drive mode 115 based on the detection signal from the controller.

Also in the present embodiment, in the pickup drive mode 81, the sub-frame 20 swings. A control circuit (not shown) controls the pickup 80 to move and arrange it in the vicinity of the swing fulcrum 70 before moving.

The pickup drive motor 81 is mounted near the pivot 70. By disposing the pickup 80 and the pick-up drive motor 81 near the pivot 70, the bottom surface 20a of the subframe 20 can be inclined so as to become thinner toward the tip ( See Figure 15). When the sub-frame 20 is swung in a direction away from the disk 1, the bottom surface 20a of the sub-frame 20 is substantially parallel to the floor surface of the bottom plate 10a of the apparatus body 10. If the angle is set so that the bottom surface of the sub-frame 20 and the bottom plate 10a of the main unit 10 are prevented from interfering with each other, the swing stroke sufficient to disengage the disk 1 can be reduced. It can be realized in the device main body 10 of the shape.

Furthermore, the base upper surface 20b of the subframe 20 is inclined so as to be substantially parallel to the disk 1 in a state of swinging in a direction away from the disk 1. As a result, while avoiding interference between the upper surface 20b on the base end side of the subframe 20 and the disk 1, a sufficient swing stroke for disengaging the disk 1 can be achieved by the thin device main body 10 It can be realized within.

Further, the motor base plate 42 is partially cut away from the center of the spindle motor 40 at the tip end side, so that the area where the notch 42 a is formed is made thin (see FIG. 15).

Moreover, in the present embodiment, as shown in FIG. 15, a notch 120 is formed at the bottom of the apparatus main body 10 to avoid interference with the subframe 20. The apparatus main body 10 can be raised to a position where it approaches or intersects with, and the apparatus main body 10 can be made thinner.

As described above, the embodiments of the present invention have been described, but the present invention is not limited thereto, and various modifications or applications are possible within the scope of the configuration described in the claims.

For example, according to the present invention, only the disc holding claw extends from the fixed turntable. It is also possible to adopt a configuration in which the disk is engaged with the disk, or the table is extended from the fixed spindle motor and the disk holding claw is engaged with the disk.

Further, the disk holding claw is not limited to the configuration shown in FIG. 4 .For example, a configuration in which a solenoid is built in the chuck portion and the disk holding claw is expanded and contracted in the radial direction by driving the solenoid may be adopted. it can. Alternatively, it is also possible to adopt a configuration in which the disk holding claw is expanded and contracted by using an acceleration force or a centrifugal force by rotating the spindle motor. In this case, the disk holding claw can be engaged without pressing the disk, so that the disk support is not required. Industrial applicability

As described above, according to the present invention, the disk is held on the table by the disk holding claws, so that the disk is securely held without applying a pressing force for the disk clamp to the turntable. can do. Further, in a state where the disk is stored in the apparatus main body, the disk can be mechanically held on the evening table by the holding claw engaging / disengaging mechanism. As a result, there is no danger of continuous pressing force acting on various parts, including the evening table, and no excessive force applied to humans. improves.

Also, if the disc holding claw is engaged with the disc by moving the evening table with respect to the disc, even if the evening table is supported via an elastic body, The necessary amount of evening table movement can be determined without taking into account the amount of body expansion and contraction, and the disc holding claw can be engaged with the disk by moving the evening table shortly. As a result, the device can be made thinner.

Claims

Range of 2Z billing

1. A disk drive device including a device main body capable of storing a disk having a central hole, and an entertainment device for rotating and driving the disk inside the device main body, wherein the disk drive device is provided in the entertainment device. A disk holding claw inserted into a center hole of the disk and engaged with the disk to hold the disk on the evening table;

A disk driving device comprising: a holding claw engaging / disengaging mechanism for engaging or disengaging the disk holding claw with the disk in a state where the disk is stored in the apparatus main body.

2. The disk drive device according to claim 1, wherein said disk holding claw is configured to be movable in a radial direction and urged radially outward by an urging means.

3. The holding claw engagement / disengagement mechanism engages or disengages the disc holding claw with the disc by moving at least the turntable with respect to the disc stored in the apparatus main body. The disk drive according to claim 1, wherein the disk drive is configured.

4. When the evening table moves to engage with the disc holding claw, a regulating means for regulating the movement of the disc in the moving direction is provided.

5. A turntable driving motor for rotating and driving the evening table, wherein the holding claw engaging / disengaging mechanism directly or indirectly supports the evening table driving mode and the evening table. A sub-frame is included, and the sub-frame is moved in the direction of separation and contact with respect to the disk, whereby the disk holding claw and the disk 4. The disk drive according to claim 3, wherein the disk drive is configured to perform removal.

6. The holding claw engaging and disengaging mechanism is configured to include a slide member that is reciprocally movable, and a cam mechanism that converts the reciprocating movement of the slide member into a movement of the sub-frame toward and away from the disk. Claim 5. The disk drive of claim 5.

7. The disk drive according to claim 6, wherein the cam mechanism includes a cam groove formed in the slide member and a cam follower provided in the sub-frame and engaging with the cam groove.

8. The sub-frame is swingably supported at a predetermined position as a pivot point,

6. The disk drive device according to claim 5, wherein the holding claw engaging / disengaging mechanism swings the subframe to engage or disengage the disc holding claw with the disc.

9. Includes a pickup for writing or reading information on or from the disc, and a guide member for slidingly guiding the pickup.

The turntable and the guide member are swingably supported with a predetermined point as a swing fulcrum,

The holding claw engaging and disengaging mechanism is configured to engage or disengage the disc holding claw with the disc by swinging the guide member and the turntable around the swing fulcrum. The disk drive of claim 1.

10. When the inner member and the turntable swing to the position where the engagement of the disc is released by the holding claw engaging / disengaging mechanism, the big-up is performed in advance. 10. The disk drive device c according to claim 9, wherein the movement is controlled near the swing fulcrum.

11. A sub-frame for supporting the evening table and the guide member, wherein the holding claw engaging / disengaging mechanism is configured to swing the sub-frame around the swing fulcrum. Range 9 disk drives.

12. The disk drive device according to claim 11, wherein the sub-frame has a configuration in which a pick-up drive module for moving the beakup is mounted near the swing fulcrum.

13. In a state where the upper surface of the sub-frame is opposed to the disk and swings in a direction away from the disk storage position, the bottom surface of the sub-frame is substantially parallel to the floor of the apparatus body. Claims wherein the bottom surface is inclined so that

1 1 disk drive.

14. In a state where the sub-frame swings in a direction away from the disk storage position, the upper surface of the sub-frame on the base end side of the swing fulcrum in the sub-frame is inclined so as to be substantially parallel to the disk. Claims 13 to 13 disk drive.

15. The sub-frame is equipped with an evening driving motor that drives the evening table to rotate, near the tip of the swing fulcrum.

The evening drive mode has a motor board at the bottom,

12. The disk drive device according to claim 11, wherein said remote base plate is formed by cutting out an arbitrary area on the tip end side from the center of said turntable drive motor.

1 6. The sub-frame is supported at two locations on both sides as swing fulcrums. Zb Range 1 1 disk drive.

17. The holding claw engaging and disengaging mechanism includes one reciprocally movable slide member and a cam mechanism for converting the reciprocating movement of the slide member into a movement of the sub-frame in a direction of moving toward and away from the disk. 11. The disk drive according to claim 11, wherein the disk drive is configured to include:

18. The disk drive according to claim 17, wherein the cam mechanism includes a cam groove formed in the slide member and a cam follower provided in the subframe and engaging with the force groove. .

19. The disk drive device according to claim 11, wherein a notch is formed in a bottom portion of the device main body to avoid interference with the subframe.