JPH05242578A - Disk-clamping device for disk player - Google Patents

Abstract

(57) [Summary] [Object] The present invention provides a disk clamping device for a disk player. [Structure] First and second centering bosses for selectively centering two types of discs having different standards, and first and second pressurizing portions for simultaneously performing centering and pressure clamping the upper surface of each disc. As a result, two types of disks having different standards can be selectively clamped, separation and deviation of the disks can be prevented, and the structure of the turntable can be simplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc clamping device for a disc player, and more particularly to a disc clamping device for a disc player having a function of selectively centering two types of discs having different standards in addition to the clamping function. .

[0002]

2. Description of the Related Art Generally, when a disc player is shaken by an impact applied from the outside or is driven eccentrically mounted on a turntable,
A disk clamping device is used in order to stabilize a state in which a disk is mounted on a turntable because a current noise, a sound break and a current jitter occur during reproduction and recording of sound.

FIG. 1 shows a conventional disk clamping device for a disk player. This is a turntable 11 having a rubber 11a installed on the upper surface thereof, which is fixedly coupled to a rotary shaft 10a of a motor 10, and the turntable 1 described above.
A centering boss 12 for centering the disk D, which is installed upward in the space 11b of the disk 1 by a spring 13 so as to have an elastic bias, and a clamping holder 1.
4 is provided with a clamp 16 which is rotatably installed by a ball 15 and clamps the disk D seated on the turntable 11.

In the conventional disk clamping device for a disk player having such a structure, a clamp 16 for clamping the disk D and a centering boss 12 for centering the disk D are separately formed, and the centering boss 12 is turned. Since the table 11 is installed so as to be elastically biased upward by the spring 13, the structure of the turntable is complicated and occupies a large space, so that the shape and movement of the pickup for reading the information on the disk are restricted. was there.

Further, since the structure of the centering boss 12 for centering the disk is designed to center only a single standard disk, if two kinds of disks having different standards are compared, a compact disk CD and a video disk LD are used in common. There was a problem that could not be used for.

[0006]

The object of the present invention was created in consideration of the above-mentioned problems, and it simplifies the structure of the turntable and, at the same time, provides two types of standards different from the clamping function. It is an object of the present invention to provide a disc clamping device for a disc player having a centering function of selectively centering a disc.

[0007]

In order to achieve the above-mentioned object, the present invention comprises a turntable which is rotationally driven, and a clamp which is installed on the upper part of the turntable so as to be able to get on and off and rotate, and between them. In a disk clamping device for a disk player that drives a disk by clamping it, first and second centering bosses for selectively centering two kinds of disks whose clamps have different standards, and the upper surface of each disk simultaneously with the centering. It is characterized in that it is configured to include first and second pressurizing units for press clamping.

According to the present invention, the clamp is provided with first and second centering bosses for selectively centering two kinds of discs having different standards, and first and second pressurizing portions for pressing the centered disc. Therefore, the structure is simple, and two types of disks having different standards can be selectively used for centering and clamping.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 2 and 3, a disk clamping device for a disk player according to the present invention has a single-body turntable 2 having an elastic member 2a on its upper surface and a rotary shaft 1a of a motor 1. Fixedly connected to. Then, the clamp 3 is rotatably installed on the clamping holder 4 by the ball 5, and the clamp 3 is installed so as to be elastically biased downward by the spring member 6.
Under the clamp 3, there are first and second centering bosses 3a and 3b for selectively centering two types of discs having different standards, that is, a compact disc D and a video disc D ', and the discs D and D. The first and second pressurizing portions 3c and 3d for press-clamping the upper surface of the 'are formed. The first pressurizing portion 3c is provided at the end of the second centering boss 3b, and the first pressurizing portion 3c is provided.
The elastic members 7 are installed on the c and the second pressurizing unit 3d, respectively. Here, the first and second centering bosses 3a, 3b
The first and second pressing portions 3c and 3d are formed in a cylindrical shape, and the portions of the first and second centering bosses 3a and 3b that come into contact with the disks D and D'are formed into curved surfaces. Is used as a rubber, and a leaf spring is used as a spring member 6.

The disc clamping device of the disc player according to the present invention thus constructed operates as follows. First, when clamping a compact disc, for example, a compact disc D, as shown in FIG. 2, the compact disc D is set on the upper surface of the turntable 2 and then the clamp holder 4 is lowered. The first centering boss 3a of the clamp 3 is connected to the center home of the compact disc D to center the compact disc D, and at the same time, the first pressing portion 3c provided at the tip of the second centering boss 3b is attached to the compact disc D. Pressure clamp the top surface.

Then, a large standard disc, for example,
When clamping the video disc D ′, as shown in FIG. 3, after the video disc D ′ is seated on the upper surface of the turntable 2 and the clamp holder 4 is lowered, the second centering boss of the clamp 3 is lowered. 3b is coupled to the center home of the video disc D'to center the video disc D ', and at the same time, the second pressing unit 3d press-clamps the upper surface of the video disc D'. At this time, since the elastic members 7 are installed at the tips of the first pressurizing unit 3c and the second pressurizing unit 3d, the disks D and D ′ are prevented from slipping during rotation, and the spring member 6 vibrates the turntable 2. The vibration of the clamp 3 caused by the above is alleviated, and the first and second centering bosses 3a and 3b prevent the disc from being detached or biased.

[0012]

As described above, the disc clamping device of the disc player of the present invention can selectively use two types of discs having different standards for clamping, and prevent the disc from being disengaged and biased. Vibration of the clamp due to vibration of the turntable is alleviated, the clamping state of the clamp becomes stable, and the structure of the turntable becomes simple.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a disk clamping device of a conventional disk player.

FIG. 2 is a vertical sectional view showing a disc clamping device of a disc player according to the present invention, showing a state in which a disc of a small standard is clamped.

FIG. 3 is a vertical sectional view showing a disc clamping device of a disc player according to the present invention, showing a state in which a large standard disc is clamped.

[Explanation of symbols]

 2 Turntable 3 Clamps 3a, 3b 1st, 2nd centering bosses 3c, 3d 1st, 2nd pressurizing part 6 Spring member 7 Elastic member

Claims (4)

[Claims] 1. A disc clamping device for a disc player, comprising: a turntable that is rotationally driven; and a clamp that is installed on an upper part of the turntable so as to be able to get on and off and rotate, and a disc is clamped between them to drive the disc. The clamp includes first and second centering bosses for selectively centering two types of discs having different standards, and first and second pressurizing portions for simultaneously centering and clamping the upper surface of each disc by pressure. A disc clamping device of a disc player characterized by being configured 2. The disc clamping device for a disc player according to claim 1, wherein the clamp is installed downward by a spring member 6 so as to be elastically biased. 3. The disc clamping device of the disc player according to claim 1, wherein the first pressing portion is provided on the second centering boss. 4. The elastic member that comes into contact with the disk is installed in each of the first pressure member and the second pressure member, and the elastic member is provided in each of the first pressure member and the second pressure member. Disc clamping device for disc players.