JP2007018660A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk device in which vibration by rotation of a disk and movement of parts by external cause are prevented surely with simple constitution without providing surplus parts. <P>SOLUTION: The device has such constitution that a cam slider 6 is locked so as not to move sliding by engaging a boss 6g projected from a lower plane of the cam slider 6 to a cam groove C provided at a large diameter gear part 8a of a tray gear 8. The cam groove C is provided at a teeth lost part 8a in which an unused part is cut out of the large diameter gear part 8a of a tray gear 8, it has a shape which is opened in the direction of oblique outer periphery, the boss 6g of the cam slider 6 is introduced from the opening part, and this can be surrounded by the cam groove C. In this state, even if vibration of the disk and force by external cause are caused, as the boss 6g is abutted to an inside wall of the cam groove C, the cam slider 6 cannot be moved sliding. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a disk device that performs recording or reproduction with respect to a disk such as a CD or a DVD, and more particularly to a cam part locking structure.

Conventionally, as a disk device, a disk tray on which a disk is placed is moved into the main body, the disk is clamped between a disk holder (clamper) provided in the main body and a turntable, and recording or recording on the disk is performed. What is made to perform reproduction is known.
In this case, a lock-dedicated part such as a leaf spring is provided to restrict the movement of the slide part due to external factors such as vibration caused by the rotation of the disk and vibration during transportation.

Also, the plate member is provided with a rib-like wall portion that acts as a plate spring, and this is in contact with the boss of the rack member, thereby restricting the sliding movement of the plate member.
It is disclosed in Patent Document 1. In this configuration, when the optical pickup is at the inner peripheral stop position, such as when the optical disk device is transported, the rib-shaped wall portion abuts against the rack member boss to restrict the sliding movement of the plate member. For this reason, the plate member is not displaced even if vibration or the like is applied during conveyance of the optical disk apparatus.

Alternatively, Patent Document 2 discloses that the cam slider does not move from its original position due to vibration or impact during transportation. Specifically, the cam slider is urged by a torsion spring so as to be held at an original position, that is, a position where the small gear portion of the tray gear and the rack portion of the cam slider do not mesh with each other.
JP 2004-288333 A (pages 5 to 6) JP 2004-253130 A (page 21)

However, in the configuration in which a lock-dedicated part that restricts the movement of the slide part as described above is provided, the number of parts increases and the cost is increased, and there is a possibility that incomplete mounting or loosening may occur. Cause trouble.

Further, in each of the conventional configurations described above, the movement of the slide part is regulated by an elastic member, so that an extra driving force is required to move the slide part against the biasing force. In addition, if a force exceeding the urging force is applied to the slide component due to vibration or impact during transportation, the movement regulation is impaired.

In view of the above-described problems, the present invention has a simple configuration without providing extra parts.
An object of the present invention is to provide a disk device that reliably prevents parts from moving due to vibration caused by rotation of the disk or external factors.

In order to achieve the above object, the present invention has a chassis fixed to the apparatus main body, a traverse mechanism capable of moving up and down in a predetermined direction with respect to the chassis via a plurality of gears by driving a motor, and an optical pickup. A pickup unit provided in the traverse mechanism and movable in a direction substantially perpendicular to the raising / lowering direction of the traverse mechanism by driving the motor, and with respect to the raising / lowering direction of the traverse mechanism and the moving direction of the pickup unit A cam slider provided on the chassis so as to be movable in a substantially orthogonal direction,
A disc device including a shift lever provided in the traverse mechanism so as to move the traverse mechanism up and down by cam engagement with the cam slider, and meshing with a tray for transporting the disc and a rack portion thereof. A tray gear for driving the tray is provided, the tray on which the disk is placed is moved into the apparatus main body, and the disk is clamped between a clamper provided in the apparatus main body and a turntable provided in the traverse mechanism. In the disk device that records or reproduces the disk by the optical pickup, the boss provided on the cam slider engages with the cam groove provided on the tray gear when the tray is closed. The cam slider is locked so as not to slide.

Further, the cam groove has a shape opened in an oblique outer peripheral direction of the tray gear, and the boss of the cam slider is introduced from the opening so as to be surrounded by the cam groove. .

According to the present invention, it is possible to provide a disk device that has a simple configuration and reliably prevents movement of parts due to vibrations caused by rotation of the disk or external factors without providing extra parts.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a disk loader of a disk device according to Embodiment 1 of the present invention, and FIG. 2 is a diagram mainly showing a traverse mechanism of the same disk device, and each is a plan view. In this disk device, a loader chassis 1 is provided with a tray (not shown) for conveying a disk, and a traverse mechanism 2 that can be swung up and down in a direction substantially perpendicular to the tray conveyance direction (front-rear direction). The loader chassis 1 is fixed to an apparatus main body (not shown).

The traverse mechanism 2 includes a pickup unit 3 having an optical pickup for recording or reproducing a disk, and a motor 4 for moving the pickup unit 3 in the radial direction of the disk.
And are provided. A transmission means 5 comprising a plurality of spur gears is attached to the motor 4, and the driving force of the motor 4 is decelerated and transmitted. The pickup unit 3 can be moved by the motor 4 when the transmission means 5 is engaged with a rack (not shown) formed in the pickup unit 3.

Further, the transmission means 5 meshes with the front tray gear 8, and the tray gear 8 can mesh with the cam slider 6 disposed on the loader chassis 1 side in front of the traverse mechanism 2. The cam slider 6 is cam-engaged with a shift lever 7 provided at the front portion of the traverse mechanism 2 and moves in a direction (left-right direction) substantially perpendicular to the tray transport direction (front-rear direction) and the traverse mechanism 2 lifting / lowering direction. it can. Thereby, the traverse mechanism 2 moves up and down. Further, the tray gear 8 can be meshed with a rack formed on the tray, and the tray gear 8 and the tray are coupled at a predetermined time so that the driving force of the motor 4 is transmitted to the tray.

In the disk device having the above configuration, when a disk is placed on the tray, the tray is transported into the disk loader by driving the motor 4. When the tray is arranged at a predetermined position, the connection between the tray and the tray gear 8 is released, and the cam slider 6 and the tray gear 8 are connected. The cam slider 6 moves in a direction perpendicular to the tray conveying direction (left-right direction) and raises the traverse mechanism 2. As a result, the traverse mechanism 2 is engaged with the disk and the disk is chucked.

The disk chuck portion will be described in detail. A substantially long plate-like clamper holder 9 is installed on the upper side of the loader chassis 1 in the left-right direction, and a substantially disk-like clamper 10 is rotatable at the center thereof. Is provided. On the other hand, a turntable 11 that is rotationally driven by a spindle motor (not shown) protrudes upward from the traverse mechanism 2. When the disc is chucked as described above, the traverse mechanism 2 is raised so that the center hole of the disc is fitted to the turntable 11, and the traverse mechanism 2 is further raised so that the disc is sandwiched between the turntable 11 and the clamper 10. It is.

When the disc is chucked, the connection between the tray gear 8 and the cam slider 6 is released,
The transmission means 5 is connected to the pickup unit 3. As a result, the pickup unit 3 can move in the radial direction of the disc, and recording or reproduction can be performed at a predetermined position on the disc. Further, when the disc is taken out, the reverse operation is performed. The lock mechanism for locking the slide parts of the disk device of the present invention will be described below.

FIG. 3 is a perspective view of the main part rear side of the lock mechanism of the present embodiment. In this embodiment, as shown in the figure, the cam slider 6 is slidably moved by engaging the cam groove C provided in the large-diameter gear portion 8a of the tray gear 8 with the boss 6g protruding from the lower surface of the cam slider 6. It is configured so as not to lock. The tray gear 8 is roughly divided into a large-diameter gear portion 8a that meshes with the transmission means 5, and a small-diameter gear portion 8b that is concentrically disposed on the upper side thereof and meshes with the cam slider 6 and a rack portion of a tray (not shown). And more.

In the present embodiment, the cam groove C is provided in the missing tooth portion 8aa obtained by cutting the unused portion of the large-diameter gear portion 8a of the tray gear 8, and the opening portion is formed in an oblique outer circumferential direction. Further, the boss 6g of the cam slider 6 is introduced so that it can be surrounded by the cam groove C. In this state, even if a disc vibration or a force due to an external factor is generated, the boss 6g abuts against the inner wall of the cam groove C, so that the cam slider 6 cannot slide.

4A and 4B are external views of the cam slider 6. FIG. 4A is a bottom view, FIG. 4B is a rear view, FIG. 4C is a plan view, and FIG. 4D is a front view. It is. The side view is not shown. As shown in FIG. 6A, a boss 6g that engages with a cam groove C provided on the upper surface of the large-diameter gear portion 8a projects from the lower surface of the cam slider 6. Further, as shown in FIG. 6B, cam grooves 6d and 6e for raising and lowering the traverse mechanism 2 are provided and engage with bosses 7a and 7b (see FIG. 2) of the shift lever 7, respectively.

The cam groove 6d is a through-hole as can be seen from FIG.
Is a bottomed one. Reference numeral 6f denotes a rack portion that meshes with the tray gear 8. Further, the engaging portions 6a and 6b having a substantially L shape in side view protruding below the left and right ends of the cam slider 6 are
The loader chassis 1 is slidably engaged with slits 1a and 1b (see FIG. 1) provided on the left and right sides of the front portion of the loader chassis 1 respectively.

5 to 7 are diagrams showing a series of operations for locking the cam slider, and are drawn in plan views. When the operation of closing the tray is performed, first, as shown in FIG. 5, the rack portion 6f of the cam slider 6 and the small-diameter gear portion 8b of the tray gear 8 mesh with each other, and the tray gear 8 rotates to the right. Slide to the right side of the figure. Tray gear 8
As shown in FIG. 6, the cam slider 6 slides further to the right as shown in FIG. 6, and the small-diameter gear portion 8b of the tray gear 8 is located near the left end of the rack portion 6f and is moving away from it. 6 bosses 6g are entering the cam grooves C of the tray gear 8.

When the tray gear 8 further rotates, as shown in FIG. 7, the boss 6g of the cam slider 6 enters the cam groove C of the tray gear 8, and the cam slider 6 slides further to the right side in the figure by the cam driving here. As a result, the small-diameter gear portion 8b of the tray gear 8 is separated from the rack portion 6f. At this time, the tray (not shown) is also completely drawn into the chassis 1. In this state, even if the cam slider 6 tries to slide to the left or right due to vibration or the like,
Since the boss 6g contacts the inner wall of the cam groove C, the slide is restricted and cannot move, and is completely locked. To unlock the cam slider and open the tray,
The reverse procedure is performed.

As described above, according to the present invention, a slide mechanism for locking a slide part is realized only by using an existing part without providing an extra part. Thereby, it is possible to prevent the slide component from moving due to vibrations caused by the rotation of the disk or external factors, and to perform this reliably.

1 is a diagram showing a disk loader of a disk device according to Embodiment 1 of the present invention. The figure which shows the traverse mechanism mainly of a disc apparatus. The principal part back side perspective view of the locking mechanism of a present Example. External view of cam slider. The figure which shows a series of operation | movement which locks a cam slider. The figure which shows a series of operation | movement which locks a cam slider. The figure which shows a series of operation | movement which locks a cam slider.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Loader chassis 2 Traverse mechanism 3 Pickup unit 4 Motor 5 Transmission means 6 Cam slider 7 Shift lever 8 Tray gear 9 Clamper holder 10 Clamper 11 Turntable

Claims (3)

A chassis fixed to the apparatus main body, a traverse mechanism capable of moving up and down in a predetermined direction with respect to the chassis via a plurality of gears driven by a motor, an optical pickup, and provided in the traverse mechanism and driven by the motor A pickup unit that is movable in a direction substantially perpendicular to the raising / lowering direction of the traverse mechanism,
The traverse mechanism is moved up and down by cam engagement between the cam slider and a cam slider provided on the chassis so that the traverse mechanism can move in a direction substantially perpendicular to the moving direction of the traverse mechanism and the moving direction of the pickup unit. A disc device provided with a shift lever provided in the traverse mechanism,
A tray that conveys the disk and a tray gear that meshes with the rack portion to drive the tray are provided. The tray on which the disk is placed is moved into the apparatus main body, and the clamper and the traverse mechanism provided in the apparatus main body are moved. In the disk device that clamps the disk between the turntable provided on the disk and records or reproduces the disk by the optical pickup,
When the tray is closed, a boss provided on the cam slider engages with a cam groove provided on the tray gear so that the cam slider is locked so as not to slide. With the shape opened in the oblique outer circumference direction of the tray gear,
The boss of the cam slider is introduced from the opening and is surrounded by the cam groove so that the boss contacts the inner wall of the cam groove so as to restrict the slide of the cam slider. A disk device characterized by comprising: A chassis fixed to the apparatus main body, a traverse mechanism capable of moving up and down in a predetermined direction with respect to the chassis via a plurality of gears driven by a motor, an optical pickup, and provided in the traverse mechanism and driven by the motor A pickup unit that is movable in a direction substantially perpendicular to the raising / lowering direction of the traverse mechanism,
The traverse mechanism is moved up and down by cam engagement between the cam slider and a cam slider provided on the chassis so that the traverse mechanism can move in a direction substantially perpendicular to the moving direction of the traverse mechanism and the moving direction of the pickup unit. A disc device provided with a shift lever provided in the traverse mechanism,
A tray that conveys the disk and a tray gear that meshes with the rack portion to drive the tray are provided. The tray on which the disk is placed is moved into the apparatus main body, and the clamper and the traverse mechanism provided in the apparatus main body are moved. In the disk device that clamps the disk between the turntable provided on the disk and records or reproduces the disk by the optical pickup,
The disc is configured such that, when the tray is closed, a boss provided on the cam slider is engaged with a cam groove provided on the tray gear so that the cam slider is locked so as not to slide. apparatus. The cam groove is formed in an obliquely outer peripheral direction of the tray gear, and the boss of the cam slider is introduced from the opening so as to be surrounded by the cam groove. 2. The disk device according to 2.

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