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Rotating desk-top and disc device for disc information recording medium

An information recording, disc-shaped technology, applied in recording information storage, instruments, etc., can solve problems such as difficulty in ensuring surface swing accuracy, inability to reproduce information, deformation of the inner surface of the center hole 102C, etc.

Inactive Publication Date: 2002-11-20
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, information cannot be correctly recorded on the disk 101, or information recorded on the disk 101 cannot be reproduced.
[0016] In addition, although Figure 19 The state where the shaft of the motor 104 is only inserted into the center hole 102C is shown, but even when the shaft passes through the center hole 102C, the shaft is along the inner surface of the center hole 102C which is inclined due to shrinkage 204 and 205 . inserted, so irregularly rubbing the inner surface of the center hole 102C other than the portion where the shrinkages 204 and 205 are generated may deform the inner surface of the center hole 102C
Therefore, it is difficult to ensure the accuracy of the surface runout of the inserted shaft and turntable 102

Method used

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  • Rotating desk-top and disc device for disc information recording medium
  • Rotating desk-top and disc device for disc information recording medium
  • Rotating desk-top and disc device for disc information recording medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] figure 1 The outline shows the first embodiment of the turntable and disk device of the present invention.

[0059] The disc device 31 includes: a turntable 2; a motor 4 that is a driving source for rotating the turntable; an optical head 5 for recording or reproducing information; and a jig 3 for fixing the disc 1 on the turntable 2 and supporting it.

[0060] The turntable 2 is provided with a central hub 2A inserted in the central hole of the disk 1, and a ring opening 7 made of a magnetic body is mounted on the central hub 2A. In this embodiment, the turntable 2 is directly mounted on the rotating shaft of the motor 4.

[0061] The turntable 2 may not be directly installed on the rotating shaft of the motor 4. For example, the motor 4 is connected to a rotating mechanism that transmits the driving force of the motor 4 through gears, pulleys, belts, etc. to change the rotation speed, and the rotating shaft provided on such a rotating mechanism is connected to the turnt...

Embodiment 2

[0092] In the disk device of this embodiment, instead of the clamp 3 and the ring opening 7 of the first embodiment, the turntable itself is provided with a mechanism for fixing the disk to the turntable. For example, Japanese Patent Application Laid-Open No. 8-335351 describes a similar mechanism for fixing the disc on the turntable.

[0093] Such as Picture 10 As shown, the disk 1 is moved in the direction of the arrow 55, and after it is mounted on the turntable 42 of the disk device of this embodiment, the spherical body 8A functions as an elastic mechanism exposed from the outer surface 42M of the hub 42A , 8B, 8C press the disc 1 on the bearing surface 42H and fix it on the turntable 42.

[0094] Below, reference Picture 11 , The structure of the turntable 42 will be described in detail. In this embodiment, the disc bearing part is a central hub 42A and a disc bearing base 42C.

[0095] The disk bearing portion base 42C includes a disk bearing surface 42H and an inner side...

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PUM

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Abstract

A turntable 2 for a disk-shaped information recording medium, comprising: a bearing surface 2H for carrying a disk, a central hub 2A having an outer surface fitted with a central hole of the disk, and a center hub 2A defined to have a shape consistent with the central hub. A disk bearing part 21 on the inner side 2J of the space of the central axis; an axis hub 22 having an outer surface and a hole into which a rotating shaft for transmitting a driving force for rotating the disk is inserted; in order to make the axis A plurality of through holes are formed between the outer surface of the hub and the inner surface of the disc bearing part, and a plurality of flanges 23 are combined between the outer surface of the hub and the inner surface of the disc bearing part. It is possible to suppress surface wobbling of the disk that occurs when the disk is rotated.

Description

Technical field [0001] The invention relates to a turntable and a disc device for a disc-shaped information recording medium. Background technique [0002] For disk-shaped portable information recording media, recording and reproducing devices that use light, magnetism, or both of them to record or reproduce digital information have been widely used. [0003] Figure 14 The outline shows the structure of a disk device that uses light to record on the disk 101 and reproduce the information recorded on the disk 101 as an example of such a recording and reproducing device. The disk device 100 includes: a turntable 102; a drive source that rotates the turntable, that is, a motor 104; an optical head 105 for recording or reproducing information; and a jig 103 for fixing the disk 101 on the turntable 102 and supporting it. [0004] The turntable 102 is provided with a central hub 102A inserted in the central hole of the disk 101, and a ring 107 made of a magnetic body is mounted on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B17/028
CPCG11B17/0282
Inventor 江泽弘造胁川政直寺前一男巽英见
Owner PANASONIC CORP
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