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Turntable

A turntable, rotating shaft technology, applied in instruments, optical recording/reproducing, data recording, etc., can solve problems such as disk flying out, disk falling off, etc.

Inactive Publication Date: 2005-01-26
TOKYO PARTS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Since the spring 40 that applies elastic force to the centering member 30 is in a compressed state, the stored axial kinetic energy will cause the disc to move in the direction of being pushed up from the turntable, which will cause the disc to fall off from the turntable T or fly out. s reason

Method used

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Experimental program
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Embodiment Construction

[0031] Hereinafter, the first embodiment of the present invention will be described with reference to the drawings.

[0032] FIG. 1 is a cross-sectional view showing a disk turntable T according to the first embodiment of the present invention.

[0033] In Figure 1, the base 2 formed of resin is provided with a shaft mounting hole 2a, and the shaft 1 is fixed to the base 2 by press-fitting. The shaft 1 is used as a drive to rotate the turntable T on which the disk D is placed. The output shaft of the electric motor of the power source.

[0034] The disc placement portion 2b formed on the base 2 is provided with a non-slip member 6 to prevent the disc D from moving in the rotation direction during high-speed rotation.

[0035] Similarly, the cylinder of the guide portion 2c formed on the base 2 is concentrically erected from the base 2 with the shaft 1 as the center. A centering member 3 formed of resin is provided on the outer side of the guide portion 2c, and the centering member...

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Abstract

A turntable comprises a guide portion concentric with a rotary shaft for rotary driving an information recording disk and a ring-like centering member for centering the information recording disk by employing a central hole is provided in the information recording disk the centering member being provided so that it can move up and down so that the outer peripheral surface of the guide portion and the inner peripheral surface of the centering member face each other, wherein the centering member applies pressure to the inner periphery of the central hole of the information recording disk during rotation, thereby pressing it against the guide portion. As a result, the guide portion is elastically deformed.

Description

Technical field [0001] The present invention relates to a turntable which is mounted on a motor of a disk drive device and has a holding mechanism for holding an information recording disk. Background technique [0002] In recent years, in order to reproduce the data recorded on the disc at a high speed or record the data on the disc at a high speed, it is loaded on a CD-ROM, DVD and other information recording disc (hereinafter referred to as a disc) reproducing / recording device The disk rotation drive part is developing in the direction of high-speed rotation. [0003] Since the in-plane weight of such a disk is not constant, there is a problem that the eccentric force acting on the disk increases as the rotation speed increases. [0004] For the above-mentioned turntable with a disk holding mechanism, it is required that the disk can be reliably held without falling off, vibration, and position deviation during rotation. The disk holding mechanism is installed on a disk rotati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/085G11B17/028G11B17/03
CPCG11B17/0282
Inventor 石井启介土屋昌久
Owner TOKYO PARTS IND CO LTD