JPH10134555A - Disk-reproducing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk-reproducing apparatus, wherein a damper cushion can be automatically and surely fitted to a pick-up chassis by the use of an insertion jig. SOLUTION: A notch part (escape hole) 63 is formed at the side of a chassis center of a damper-fitting hole 61 of a pick-up chassis 3. When a damper cushion 4 is to be fitted with the use of an insertion jig, a thick part of a damper cushion 4a at the insertion side hides in the escape hole 63, and the whole damper cushion 4 is pressed deep. Accordingly, a rear end part of the damper cushion 4 is freed from the restraint from a guide notch part 62, so that the damper cushion 4a is inserted into the fitting hole 61 in a perfect state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CD-ROM,
The present invention relates to a disk reproducing apparatus for reproducing an optical disk such as a VD.

[0002]

2. Description of the Related Art Compact discs, laser discs,
In a disk drive for reproducing an optical disk such as a digital video disk (DVD), as a measure against external vibration,
For example, a structure is adopted in which a mechanical chassis (pickup chassis) on which a disk driving / reproducing mechanism such as an optical pickup and a disk motor is mounted is supported by a support member via a buffer member such as a damper cushion.

[0003] In particular, a digital video disk (hereinafter referred to as a DVD) known as a high-density optical disk.
Since the track pitch is as narrow as about half of that of a compact disk or a laser disk, and the influence of external vibration on the disk reading is large, it is required to have a vibration-proof structure that is particularly excellent in vibration absorption. .

The operation of attaching the damper cushion to the pickup chassis may be performed manually by a line worker, or may be performed using a jig 82 for inserting the damper cushion 11 as shown in FIGS. 11 and 12, for example. .

[0005] Here, the operation of attaching the damper cushion 81 using the insertion jig 82 will be described. The insertion jig 82 is configured to slide back and forth by air pressure. The damper cushion 81 is inserted and held by a pin 83 erected at the tip of an insertion jig 82.
The damper cushion 81 held by the pin 83 is pushed into a damper mounting hole 85 provided in the pickup chassis 84 through a notch 86 for insertion guide as the insertion jig 82 advances.

However, the operation of attaching a damper cushion using such an insertion jig has the following problems.

[0007] As shown in FIG.
The damper cushion 81 held by the second pin 83 enters the damper mounting hole 85 while being elastically deformed at the guide notch 86. Pin 8 of insertion jig 82
3 continues to move forward after entering into the damper mounting hole 85, and FIG.
As shown in FIG. 3 (b), the damper cushion 81 moves to a point where the forward movement is hindered by the thickness of the damper cushion 81. However, at this time, the rear end of the damper cushion 81 is still sandwiched between the guide cutouts 86 from both sides. Even if the rear end of the damper cushion 81 is pulled inward, the rear end of the damper cushion 81 may not escape the restriction from the guide notch 86.

[0008]

As described above, when the damper cushion is mounted on the pickup chassis using the insertion jig, the damper cushion is completely inserted into the damper mounting hole such that the rear end of the damper cushion protrudes from the mounting hole. Had a problem that it could not be fully inserted.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide a disk reproducing apparatus capable of securely mounting a damper cushion to a pickup chassis using an insertion jig without fail. .

[0010]

According to a first aspect of the present invention, there is provided a disk reproducing apparatus comprising: a chassis mounted with a mechanism for driving and reproducing a disk; In a disk reproducing device supported via a cushion, a first hole for inserting a damper cushion into a chassis and a damper cushion inserted into the mounting hole from a direction along a surface of the chassis.
And a second notch provided at a position facing the first notch with the mounting hole interposed therebetween.

According to a second aspect of the present invention, there is provided a disk reproducing apparatus comprising a chassis mounted with a mechanism for driving / reproducing a disk via a damper cushion. A first notch portion for inserting the damper cushion into the chassis while elastically deforming the damper cushion from the direction along the surface of the chassis in the mounting hole; A second notch provided at a position facing the notch is provided.

In the disk reproducing apparatus of the present invention, when the damper cushion is automatically mounted on the pickup chassis using the insertion jig, the position opposite to the first notch for insertion with the mounting hole interposed therebetween. The second provided in
Since the insertion end of the damper cushion escapes into the notch of the first member and the damper cushion is pushed entirely into the back, the rear end of the damper cushion is released from being caught in the first notch for insertion. Therefore, the damper cushion can be securely mounted in the mounting hole.

According to a third aspect of the present invention, there is provided a disk reproducing apparatus comprising a chassis on which a mechanism for driving and reproducing a disk is mounted via a damper cushion. In the process of inserting the damper cushion into the mounting hole through the notch, the mounting hole of the damper cushion in the chassis, the notch for inserting the damper cushion from the direction along the surface of the chassis into the mounting hole, and the notch. A relief hole is provided for temporarily releasing the insertion tip of the damper cushion from the mounting hole.

Further, according to a fourth aspect of the present invention, there is provided a disk reproducing apparatus comprising a chassis on which a mechanism for driving and reproducing a disk is mounted via a damper cushion. A damper cushion mounting hole in the chassis, a notch for inserting the damper cushion into the mounting hole while elastically deforming the damper cushion from a direction along the surface of the chassis, and the damper cushion is inserted into the mounting hole through the notch. And a relief hole for temporarily allowing the insertion tip of the damper cushion to escape from the mounting hole in the process.

In the disk reproducing apparatus of the present invention, when the damper cushion is automatically attached to the pickup chassis by using the insertion jig, the insertion tip of the damper cushion enters the clearance hole, and the damper cushion is entirely recessed. Therefore, the rear end of the damper cushion can be released from being caught in the notch for insertion, and the damper cushion can be securely attached to the mounting hole.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the disk reproducing apparatus according to the present embodiment is configured such that a tray 1 on which a disk is mounted can be freely inserted into and removed from a main chassis 2 as a drive main body. Guide protrusions 1a are provided on both side surfaces of the tray 1. These guide projections 1a are fitted into guide portions 2a provided on the main chassis 2, whereby the tray 1 is guided in a linear direction parallel to the disk surface, and the tray discharge position shown in FIG. Conveyed to and from the position.

As shown in FIGS. 1 to 3, a reproducing mechanism is provided in a main chassis 2 by supporting a mechanical chassis (pickup chassis) 3 having a disk reproducing mechanism via a plurality of damper cushions 4. Unit 5 is arranged. The mechanical chassis (pickup chassis) 3 includes a disc motor 13 and an optical pickup 14.
And an optical pickup feed mechanism.

The optical pickup 14 is bridged between two guide shafts 35 and 36 arranged in parallel with each other. The optical pickup feeding mechanism includes a pickup feeding motor 51 and the power of the motor 51 by the optical pickup 1.
4 includes reduction gears 53 and 54 for transmitting to a rack gear 52 fixed to the rack gear 52.

The disk motor 13 is fixed on the mechanical chassis 3 via a motor mount 15. A turntable 16 is attached to a motor shaft of the disk motor 13.

As shown in FIGS. 3 and 4, rotating shafts 6 protrude from both sides on the rear side in the tray insertion direction of the reproducing mechanism unit 5, and these rotating shafts 6 It is rotatably held by a shaft holder 7 (see FIGS. 1 and 2) of the chassis 2. A rotation guide shaft 8 protrudes from the surface of the reproduction mechanism unit 5 on the labor side in the tray insertion direction. The rotation guide shaft 8 is provided on a guide 9 provided on a slider 9 that slides in the depth direction in FIG. The slider 9 is inserted and held in the groove 10, and is guided in the vertical direction (the thickness direction of the disk) along the guide groove 10 as the slider 9 moves. As a result, the reproducing mechanism unit 5 is configured to tilt about the rotation shaft 6 as a fulcrum and perform disc clamping.

As shown in FIGS. 1 and 2, the main chassis 2 is provided with a clamper 1 via a clamper holder 11.
2 are held. Further, a mechanism system for tray loading and disk clamping is provided in the main chassis 2.

Next, the details of the tray loading and disc clamping mechanism and its operation will be described.

FIG. 5 shows a state at the time of tray discharge, FIG. 6 shows a state at the time of tray loading completion, and FIG. 7 shows a state at the time of completion of disc clamping.

In FIG. 5, reference numeral 21 denotes a loading motor.
The power is transmitted to the tray load gear 26 through the belt 23, the second pulley 24, and the reduction gear 25. A rack 27 provided on the tray 1 is meshed with the tray load gear 26, whereby the tray 1 is loaded in the direction of arrow X1.

A slider transport gear 28 is meshed with the tray load gear 26. However, during the loading period of the tray 1, the slider transport gear 28 is not engaged with the rack 29 of the slider 9.

As shown in FIG. 6, when the tray 1 is loaded to a predetermined position in the main chassis 2, the guide pins 31 of the slider 9 enter the guide grooves 30 provided on the back surface of the tray 1, and the guide grooves 31 are provided. Guide pin 3 by 30
With the guidance of No. 1, the slider 9 slides in the arrow Y1 direction. This movement of the slider 9 causes the rack 29 of the slider 9 to mesh with the slider transport gear 28, and the slider 9 further slides in the Y1 direction by the power of the loading motor 21. At this point, the engagement between the tray load gear 26 and the rack 27 of the tray 1 is released, and the loading of the tray 1 is completed.

The movement of the slider 9 causes the rotation guide shaft 8 of the reproduction mechanism unit 5 to move as shown in FIG.
Is guided upward along the guide groove 10 of the slider 9, so that the reproducing mechanism unit 5 rotates in the direction of arrow R with the rotation shaft 6 as a fulcrum.

During the rotation of the reproducing mechanism unit 5, the disk D mounted on the tray 1 is lifted from the tray 1 by the turntable 16. Thereafter, due to the approach between the disc chuck portion 32 of the turntable 16 and the clamper 12, the disc chuck portion 32 is completely fitted into the center hole of the disc D due to the magnetic attraction force therebetween. Is completed. As shown in FIG. 7, at the time of completion of the disk clamp, the switch operation unit 33 provided at the left end of the slider 9 pushes the switch 35 to the back via the lever 34. Thus, the switch 35 detects the completion of the disk clamp and outputs a detection signal to the controller. When the controller receives the disc clamp completion detection signal, the loading motor 21
Stop driving.

The release of the disk clamp and the unloading of the tray are performed in the reverse order of the above operation by rotating the loading motor 21 in the reverse direction.

Next, the form of the mounting structure of the damper cushion 4 in the mechanical chassis (pickup chassis) 3 will be described.

As shown in FIGS. 3, 8, and 9, a damper mounting hole 61 is provided at each corner of the pickup chassis 3, and between each chassis corner and the damper mounting hole 61. Is provided with a notch 62 for an insertion guide.

When attaching the damper cushion 4 using the insertion jig 71, the pin 72 of the insertion jig 71
The damper cushion 4 inserted and held in the hole passes through the notch 62 and is inserted into the damper mounting hole 61.

It is desirable that the width of the entrance of the notch 62 on the chassis corner side be appropriately wide in order to improve the catching property of the damper cushion 4 carried by the insertion jig 71. If the opening width of the notch 62 on the side of the damper mounting hole 61 is too wide, the damper mounting hole 6 may be too wide.
The restraint of the damper cushion 4 within 1 becomes worse, and if it is too narrow, the damper cushion 4 becomes difficult to pass. For this reason, the cutout portion 62 is formed in a tapered shape having a width increased toward the chassis corner.

Further, the thick portion on the insertion tip side of the damper cushion 4 is attached to the damper mounting hole 61 at the chassis center side of each damper mounting hole 61 when the damper cushion 4 is mounted using the insertion jig 71. A cutout (hereinafter referred to as an escape hole) 63 for escape from the area is provided. More specifically, the relief hole 63 is provided at an intermediate position of its width on an extended straight line connecting the cutout portion 62 and the center point of the damper attachment hole 61.

FIGS. 9 and 10 show a state where the damper cushion 4 is mounted in the damper mounting hole 61 by the insertion jig 71. FIG.

As shown in FIG. 9, the damper cushion 4
A small-diameter portion 4a for fitting into the damper mounting hole 61 is formed between the upper and lower large-diameter portions 4b and 4c. Small diameter part 4
The diameter of “a” substantially matches the inner diameter of the damper mounting hole 61, and the diameter of the upper and lower large diameter portions 4 b and 4 c is
Larger than the diameter of.

When the insertion jig 71 is advanced by air pressure, the damper cushion 4 inserted and held on the pin 72 of the insertion jig 71 is inserted into the notch 62 for the insertion guide.
Get inside. When the insertion jig 71 is further advanced,
As shown in FIG. 10A, the damper cushion 4 (small diameter portion 4 a) partially enters the damper mounting hole 61 while being elastically deformed at the guide notch 62.

The pin 72 of the insertion jig 71 continues to advance after entering the damper mounting hole 61, and the damper cushion 4
Move to a point where forward movement is hampered by the wall thickness. Here, since the relief hole 63 exists on the chassis center side of the damper mounting hole 61, the damper cushion 4 (the small diameter portion 4) is provided in the relief hole 63 as shown in FIG.
The thick part on the insertion tip side of a) enters by the pressing from the pin 72. The resulting overstroke of the pin 72 pushes the damper cushion 4 as a whole into the back, so that the rear end of the damper cushion 4 (small diameter portion 4a) escapes the constraint from the guide notch 62.

Thereafter, as shown in FIG. 10C, the pin 72 is pulled out of the damper cushion 4 so that the damper cushion 4 (the small-diameter portion 4
The thick part of a) has the damper mounting hole 6 due to the elastic restoring force.
1 and the damper cushion 4 is completely inserted into the damper mounting hole 61.

Thus, according to the present embodiment, even when the damper cushion 4 is attached to the pickup chassis 3 using the insertion jig 61, the damper cushion 4 is correctly inserted into the attachment hole 61 of the pickup chassis 3. 4 can be attached.

[0042]

As described above, according to the present invention, when the damper cushion is automatically attached to the pickup chassis using the insertion jig, the damper cushion is pushed entirely into the back of the mounting hole. As a result, the rear end of the damper cushion can be released from being sandwiched by the notch for insertion, and the damper cushion can be securely attached to the mounting hole.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a tray of a disc reproducing apparatus according to an embodiment is ejected.

FIG. 2 is a perspective view showing a state of the disk reproducing apparatus of FIG. 1 during reproduction.

FIG. 3 is an exploded perspective view showing a configuration of a reproducing mechanism unit in the disc reproducing apparatus of FIG. 1;

FIG. 4 is an internal side view of the disc reproducing apparatus of FIG. 1;

FIG. 5 is a plan view showing a state when the tray of the disc reproducing apparatus of FIG. 1 is ejected;

FIG. 6 is a plan view showing a state at the time of completion of tray loading of the disc reproducing apparatus of FIG. 1;

FIG. 7 is a plan view showing a state at the time of completion of disk clamping of the disk reproducing apparatus of FIG. 1;

FIG. 8 is a plan view showing a damper cushion mounting structure of a pickup chassis and a form of an insertion jig.

FIG. 9 is a perspective view showing details of a damper cushion mounting structure of a pickup chassis and a form of an insertion jig.

FIG. 10 is a diagram showing a state in which a damper cushion is attached to a pickup chassis using an insertion jig.

FIG. 11 is a plan view showing a damper cushion mounting structure of a conventional pickup chassis and a form of an insertion jig.

FIG. 12 is a perspective view showing details of a conventional damper cushion mounting structure of a pickup chassis and an insertion jig.

FIG. 13 is a diagram showing a state in which a damper cushion is attached to a pickup chassis using an insertion jig in the related art.

[Explanation of symbols]

 3 ... Pickup chassis 4 ... Damper cushion 61 ... Damper mounting hole 62 ... Notch for insertion guide 63 ... Escape hole 71 ... Jig for insertion 72 ... Pin

Claims (4)

[Claims] 1. A disk reproducing apparatus comprising a chassis having a mechanism for driving and reproducing a disk mounted thereon via a damper cushion, wherein a mounting hole for the damper cushion is provided in the chassis, and a mounting hole is provided in the mounting hole. A first notch for inserting the damper cushion from a direction along a surface of a chassis; and a second notch provided at a position facing the first notch with the mounting hole interposed therebetween. And a disc reproducing apparatus, comprising: 2. A disk reproducing apparatus comprising a chassis on which a mechanism for driving and reproducing a disk is mounted via a damper cushion, wherein a mounting hole for the damper cushion is provided in the chassis, and a mounting hole is provided in the mounting hole. A first notch for inserting the damper cushion while elastically deforming the damper cushion from a direction along a surface of a chassis, and a first notch provided at a position facing the first notch with the mounting hole interposed therebetween. 2. A disk reproducing apparatus comprising: two notches. 3. A disk reproducing apparatus comprising a chassis having a mechanism for driving and reproducing a disk mounted thereon via a damper cushion, wherein the chassis has a mounting hole for the damper cushion, and a mounting hole in the mounting hole. A notch portion for inserting the damper cushion from a direction along a surface of a chassis; and, in a process in which the damper cushion is inserted into the mounting hole through the notch portion, the insertion tip of the damper cushion is attached to the mounting hole. A disc reproducing device provided with an escape hole for more temporary escape. 4. A disk reproducing apparatus comprising a chassis mounted with a mechanism for driving and reproducing a disk via a damper cushion, wherein the chassis has a mounting hole for the damper cushion, and a mounting hole in the mounting hole. A notch portion for inserting the damper cushion while elastically deforming the damper cushion from a direction along a surface of a chassis; and an insertion tip of the damper cushion in a process of inserting the damper cushion into the mounting hole through the notch portion. And a relief hole for temporarily releasing the hole from the mounting hole.