JPH0721755A - Device for fixing optical pickup - Google Patents

Abstract

PURPOSE:To fix an optical pickup and to protect it from external vibration by providing an adapter with an optical pickup protection part. CONSTITUTION:A tray 2 is provided with step parts 2a, 2b, 2c dealing with a disk with an external diameter different from each other and a notched part 2d dealing with an optical pickup 4, etc. On the adapter 3 for fixing optical pickup, a rib 3a matching the shapes of the step part 2c equivalent to the external diameter of an 8cm disk with the minimum external diameter and the notched part 2d, and a central hole 3b similar to the 8cm disk, and the rib 3c dealing with the outer periphery of a turntable 5, and the rib 3d dealing with the outer periphery of the optical pickup and a projection 3e for protecting an objective lens when the optical pickup is moved vertically are formed integrally. When the adapter 3 is loaded, and the tray 2 is loaded, since the adapter 3 is pressurized to a clamper 6 through the central hole 3b by the rising turntable 5, and the rising optical pickup is inserted into the inside of the rib 3d and fixed simultaneously, the optical pickup is protected from the external vibration.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical pickup fixing device which protects an optical pickup of a disc plate and its drive section from a shock during transportation.

[0002]

2. Description of the Related Art As a means for preventing damage to an optical pickup and its drive section during transportation of a disk player having a conventional optical pickup, the optical pickup is fixed during transportation so that it can be attached from the bottom or rear of the main body. Use a lock screw, or design the optical pickup and its drive part strongly to withstand impact, or tape an optical pickup protector made of paper to the tray, which allows movement of the optical pickup. To prevent damage.

[0003]

The above-mentioned transportation lock screw of the prior art is troublesome because the optical pickup is fixed by mounting the screw by lifting or reversing the set, and the screw mounting position at the time of designing. Had to consider. The optical pickup protector made of paper is difficult to position on the tray because it is made of paper when it is mounted, and it is necessary to attach the tape to the tray with tape to fix it, which is very time-consuming, and is difficult to re-transport. Since the reattachment was made of paper, it was difficult for the user to store it again and re-transport it.
In addition, increasing the strength of the optical pickup and its drive unit so as to withstand impact, especially as in an LD player, when the weight of the optical pickup becomes large, the drive unit becomes very large, and the holding function used. There is a drawback that the material becomes heavy and the structure becomes complicated. Therefore, an object of the present invention is to solve the problems of these conventional techniques,
An object is to provide an optical pickup fixing device capable of easily fixing the optical pickup and its drive unit.

[0004]

In order to achieve the above object, according to the present invention, a disc-shaped portion which guides one of the disc guides provided on the tray and an optical pickup protection portion which is connected to the disc-shaped portion are provided. By equipping the tray with the adapter, loading and mounting the adapter on the turntable in the same manner as mounting the disc, the adapter is fixed to the turntable, and the optical pickup protection section of this adapter has an optical pickup and an optical pickup. The drive unit is protected from external vibration and fixed, and the optical pickup is protected.

[0005]

Therefore, if the above optical pickup fixing device is used, the set body is not moved during mounting, and
There is no tape stop and the adapter's optical pickup protection part is fixed to the turntable in a state where it blocks the movement of the optical pickup by placing the adapter on the disc and loading it, and it can be easily mounted. It is possible to keep the strength to withstand normal use.

[0006]

1 is a perspective view showing an optical pickup fixing device of the present invention. FIG. 2 is a cross-sectional view showing a state where the optical pickup is fixed. As shown in FIG. 1, the playback device 1
The tray 2 has a tray 2, and the tray 2 moves in and out by loading as shown by an arrow B, and steps 2a, 2b, 2c are provided so that discs having different outer diameters placed on the tray 2 can be reproduced.
Also, it has a notch 2d facing the optical pickup, the turntable and the clamper.

When the optical pickup fixing adapter 3 is loaded with the rib 3a so as to fit the shape of the stepped portion 2c and the cutout 2d of the tray 2 corresponding to the outer diameter of the disc of the set tray 2 having the smallest outer diameter of 8 cm. The center hole 3b, which is the same as the disk, is clamped by the turntable 5 and the clamper 6 like the 8 cm disk, and the ribs 3 are provided around the center hole 3b so that the outer diameter of the turntable 5 does not shift.
c, a rib 3d and a projection 3e for protecting the objective lens when the optical pickup 4 moves up and down are integrally formed around the optical pickup 4 so that the outer diameter of the optical pickup 4 does not shift.

When the adapter 3 is mounted from the direction of the arrow A on the tray 2 at a position corresponding to the outer diameter of the predetermined disc and the tray 2 is loaded into the reproducing apparatus 1, the optical pickup 4 and the turntable are brought into the state shown in FIG. 5 rises,
The turntable 5 presses against the upper clamper 6 through the central hole 3b of the adapter 3 to fix the adapter 3 on the turntable, and the optical pickup 4 is inserted into the rib 3d of the adapter 3 and protected from external vibration. Retained. An elastic member (not shown) is attached to the inner surface of the rib 3d to prevent vibration. Objective lens 4 of optical pickup
A is a structure in which dust from above is prevented by the adapter 3. Even if the power is turned off during transportation, this mechanism is maintained by the gear ratio of the drive motor and the like.

[0009]

As described above, according to the present invention, the optical pickup fixing device is placed on the tray and put in the loading state in the same manner as when the disc is mounted, so that the optical pickup is protected by the ribs and its driving portion is provided. It can prevent damage during transportation.

[Brief description of drawings]

FIG. 1 is a perspective view showing the outline of an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a fixed state.

[Explanation of symbols]

 1 playback device 2 tray 3 adapter 4 optical pickup 5 turntable 6 clamper

Claims (1)

[Claims] 1. An optical pickup, a drive device for the optical pickup in a radial direction of a disc, a turntable for mounting and rotating the disc, and a tray on which the disc is mounted. The turntable is mounted on the tray. A disc player for loading a disc is equipped with an adapter having a disc-shaped portion conforming to the outer shape of the disc to be placed on the tray and an optical pickup protection portion connected to the disc-shaped portion. The adapter is placed on the tray. The optical pickup fixing device is characterized in that the transport means limits the movement of the optical pickup in the radial direction at the position where the optical pickup is mounted on the turntable.