JPH0765537A - Optical disk device - Google Patents

Abstract

(57) [Abstract] [Purpose] An object is to provide a thin optical disk device. [Structure] An optical head 1 for reading and writing information from an optical disc, a spindle motor 2 for rotating an optical disc, a base sheet metal 7 to which they are attached, a base sheet metal 7 and an optical disc device housing 9 are connected. The anti-vibration rubber 8 and the base sheet metal raising / lowering cam 14 for raising / lowering the base sheet metal 7 are used to move the base sheet metal 7 up and down by the base sheet metal raising / lowering cam 14 during non-operation and operation. [Effect] It is possible to reduce the thickness of the anti-vibration rubber 8 corresponding to the damping amount on one side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk device for reading information from or writing information on an optical disk such as a video disk, a compact disk and a magneto-optical disk.

[0002]

2. Description of the Related Art A conventional optical disk device is shown in FIG.
A description will be given based on (a), FIG. 5 (b), FIG. 6 (a), and FIG. 6 (b).

5 (a) and 5 (b) are a front view and a side view of a conventional optical disc device when a caddy is inserted, and this state is called a non-operating state. 6 (a) and 6 (b) are a front view and a side view showing a state in which information is read from and written in an optical disc of a conventional optical disc device, and this state is called an operating state.

In FIGS. 5 (a) and 5 (b), reference numeral 1 denotes a laser beam irradiated onto the optical disk 4 to write data,
It is an optical head for reproducing and erasing. Reference numeral 2 is a spindle motor, and an optical disk 4 housed in a caddy 3 is mounted on a turntable 5 attached to the shaft of the spindle motor 2 and rotated. The module 6 having the optical head 1 and the spindle motor 2 mounted thereon is attached to a base sheet metal 7, and the base sheet metal 7 is attached to an optical disk device casing 9 via a vibration-proof rubber 8. As a result, the optical head 1 is damped by the anti-vibration rubber 8. Reference numeral 10 is a caddy positioning guide pin for positioning the caddy 3. The caddy 3 is held by a caddy holder 11, and the caddy holder 11 includes a cam portion 11a. The slide plate 12 is a base metal plate 7
The cam portion 11a of the caddy holder 11 is located above and has a structure that moves back and forth as the caddy 3 is inserted and ejected.
An inclined portion 12a is provided so as to receive it. A spring 13 is attached between the caddy holder 11 and the base sheet metal 7.

The operation of the optical disk device configured as described above will be described below. First, when the caddy 3 is pulled in the direction of the arrow a and the pulling is completed, the slide plate 12 is moved in the direction of the arrow b by a driving source such as a motor. Along with this, the cam portion 11a of the caddy holder 11 moves along the inclined portion 12a of the slide plate 12, and the caddy holder 11 is lowered by the force of the spring 13. Along with this, the caddy 3 is also lowered, the caddy 3 is positioned by the caddy positioning guide pin 10, and the optical disk 4 is mounted on the turntable 5 of the spindle motor 2. This state is shown in FIG. In this state, the optical head 1 moves in the track direction of the optical disc 4 to read and write information from the optical disc 4.

[0006]

However, in the above-mentioned conventional configuration, the damping amount range required during operation is fixed because the position of the base sheet metal 7 is fixed during non-operation shown in FIG. 5 and during operation shown in FIG. (Dimension A in the figure) must be ensured even during non-operation, which causes a problem that the thickness of the optical disk device (dimension Y1 in the figure) becomes thick.

The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a thin optical disk device.

[0008]

In order to achieve this object, the optical disk device of the present invention is such that a base provided through an anti-vibration means in a housing to which an optical head and a spindle motor are attached is mounted in the housing. It is provided with a moving means for moving it to the other side.

[0009]

With the above arrangement, the present invention allows the base to be moved by the damping amount region on one side when not operating.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of an optical disk device according to an embodiment of the present invention. In FIG. 1, 1 is an optical head, 2 is a spindle motor, 5 is a turntable,
6 is a module, 7 is a base metal plate, 8 is a vibration-proof rubber, 9 is an optical disk device housing, 10 is a caddy positioning guide pin, 12 is a slide plate, and 12a is an inclined portion of the side surface of the slide plate 12. Since the configuration is the same as the example, the description is omitted. Reference numeral 14 denotes a base sheet metal elevating / lowering cam for elevating and lowering the base sheet metal 7, which is configured to rotate around a cam shaft 15 attached to a side surface of the optical disk device housing 9. In addition, the base sheet metal lifting cam 14
Pin 16 on the side of the slide plate 12 to move the
A spring 17 is attached between the base sheet metal 7 and the optical disk device housing 9 in order to raise the base sheet metal 7.

The operation of the optical disk device configured as described above from the insertion of a caddy to the state (operation) in which information on the optical disk can be read and written will be described with reference to FIGS. 2, 3 and 4.

FIG. 2A is a front view of the optical disk device according to the embodiment of the present invention when not operating, and FIG. 2B is a side view of the optical disk device according to the embodiment of the present invention when not operating. Is. In this state, the base sheet metal lifting cam 1
Since 4 is at the position shown in the figure, the base sheet metal 7 is pushed downward, and the vibration-proof rubber 8 is distorted by that amount. FIG. 3 is a side view of the optical disc device in which the caddy 3 is inserted in the direction of arrow a and the optical disc 4 is mounted on the turntable 5 in this state. First, arrow a of caddy 3
When the pull-in is completed by pulling in the direction, the slide plate 12 is moved in the direction of arrow b by a drive source such as a motor. Accordingly, the cam portion 11a of the caddy holder 11
Moves along the inclined portion 12a of the slide plate 12, and the caddy holder 11 is lowered by the force of the spring 13. Along with this, the caddy 3 is also lowered, the caddy 3 is positioned by the caddy positioning guide pin 10, and the optical disk 4 is mounted on the turntable 5 of the spindle motor 2. This movement is similar to that of a conventional optical disk device. However, in this state, since the base sheet metal lifting cam 14 has not yet rotated, the base sheet metal 7 remains downward, and in this state, the lower damping amount region is not secured and the information from the optical disc 4 is not obtained. Cannot be read or written.

The state in which the base sheet metal lifting cam 14 is rotated from this state is shown in FIGS. 4 (a) and 4 (b).
[Fig. 4] is a front view of the optical disk device in one embodiment of the present invention when the base sheet metal 7 is up, and Fig. 4 (b) is a side view. As shown in FIG. 3, when the optical disk 4 is mounted on the turntable 5 of the spindle motor 2, the slide plate 12 is further moved by a drive source such as a motor and further indicated by an arrow b.
1 in which the slide plate 12 is attached to the side surface.
The pin 16 shown in FIG.
The base sheet metal lifting cam 14 is rotated. The base sheet metal 7 was pushed downward by the base sheet metal lifting cam 14, but the spring mounted between the optical disk device housing 9 and the base sheet metal 7 as the base sheet metal lifting cam 14 rotates. Due to the restoring force of 17 and the distorted anti-vibration rubber 8, as shown in FIGS. 4 (a) and 4 (b), it rises to a prescribed position, and a lower damping amount range (dimension A in the figure) is secured, and information from the optical disc 4 is secured. Are read and written.

As described above, in this embodiment, the base sheet metal 7 is shifted by the damping amount region (dimension A in the figure) on one side during non-operation and during operation. The thickness (dimension Y2 in the drawing) of the optical disk device of this embodiment can be reduced by the dimension A.

In this embodiment, the caddy 3 is lowered and the optical disc 4 is mounted on the turntable 5 of the spindle motor 2, but conversely the module 6 is raised and the optical disc 4 is placed on the turntable 5 of the spindle motor 2. Even in the mounted example, the caddy 3 is moved together with the base metal plate 7 so that the caddy 3 contacts the upper part of the optical disk device housing 9 when not operating, and the caddy 3 is lowered together with the base metal plate 7 during operation. The same effect can be obtained.

[0016]

As described above, the present invention is provided with the moving means for moving the base, which is provided on the housing to which the optical head and the spindle motor are attached via the vibration isolating means, with respect to the housing. As a result, the base can be moved by the damping amount region on one side during non-operation, so that it is possible to reduce the thickness corresponding to the damping amount on one side.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an optical disc device according to an embodiment of the present invention.

FIG. 2A is a front view of the optical disk device according to the embodiment of the present invention when not operating, and FIG. 2B is a side view of the optical disk device according to the embodiment of the present invention when not operating.

FIG. 3 is a side view of an optical disk of an optical disk device according to an embodiment of the present invention with an optical disk mounted on a turntable.

FIG. 4A is a front view of the optical disc apparatus according to the embodiment of the present invention when the base sheet metal is up, and FIG. 4B is a front view of the optical disc apparatus according to the embodiment of the present invention when the base sheet metal is up. Side view

FIG. 5A is a front view of a conventional optical disc device in a state in which a caddy is inserted, and FIG. 5B is a side view of a conventional optical disc device in a state in which a caddy is inserted.

FIG. 6A is a front view of a conventional optical disc device in a state of reading and writing information from an optical disc, and FIG. 6B is a side view of a conventional optical disc device in a state of reading and writing information from the optical disc.

[Explanation of symbols]

 1 Optical head 2 Spindle motor 7 Base sheet metal 8 Anti-vibration rubber 12 Slide plate 14 Base sheet metal lifting cam

Claims (1)

[Claims] 1. An optical head for reading information from an optical disc to be mounted, a spindle motor for rotating the optical disc, a base to which the optical head and the spindle motor are attached, and a housing for accommodating the base. ,
An optical disk device comprising: a vibration isolator provided between the base and the housing, and a moving means for moving the base with respect to the housing.