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Electromotor and disc driving device

A disc drive and motor technology, applied in electromechanical devices, manufacturing motor generators, electric components, etc., can solve problems such as easy vibration, and achieve easy and firm fixation

Inactive Publication Date: 2014-03-12
NIDEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the center of gravity and the center of rotation of the entire combination of the rotating part of the brushless motor and the optical disc do not coincide, the problem of vibration is likely to occur

Method used

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  • Electromotor and disc driving device
  • Electromotor and disc driving device
  • Electromotor and disc driving device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings. Hereinafter, the shape and positional relationship of each part will be described below, assuming that the direction along the central axis of the motor is defined as the vertical direction, and that the side where the optical disc is disposed with respect to the turntable is defined as the upward direction. However, the vertical direction is defined here for the convenience of description, and does not limit the postures of the motor and the optical disk drive device according to the present invention during use.

[0047]

[0048] figure 1 It is a partial vertical cross-sectional view of the motor 113 according to one embodiment of the present invention. Such as figure 1 As shown, the motor 113 includes a stationary part 102 and a rotating part 103 . The rotating part 103 is supported so as to be rotatable relative to the stationary part 102 . The station...

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PUM

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Abstract

The invention provides an electromotor and a disc driving device. A resin part provided with a rolling channel part and a rotor keeper are integrated. And the resin part is provided with a clamping seat part. On the other hand, a blocking plate blocking the rolling channel part is provided with a clamping part. Furthermore, the clamping part and the clamping seat part are clamped. Therefore, the rolling channel part and the blocking plate are easily and firmly fixed. The clamping seat part is configured at a position in an overlapping with a through hole when observed from above. Therefore, during forming of the resin part, a die can be used to form the clamping seat part. Therefore, the shape of the clamping seat part can be obtained in high precision.

Description

technical field [0001] The present invention relates to a motor and an optical disc drive. Background technique [0002] A brushless motor for rotating an optical disk is mounted on an optical disk drive device such as an optical disk drive. In recent years, the rotation speed of the brushless motor tends to be increased along with the increase in the multiple speed of the optical disk drive device. When the brushless motor rotates at high speed, vibration accompanying the rotation is easily generated. One of the factors contributing to the vibration of the brushless motor is the eccentricity of the center of gravity of the optical disc. The position of the center of gravity of a disc differs slightly for each disc. When the center of gravity and the center of rotation of the entire combination of the rotating part of the brushless motor and the optical disk do not coincide, a problem of vibration is likely to occur. [0003] As a technique for correcting the center of g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B17/02H02K1/12H02K1/14H02K1/22H02K15/02H02K15/00
CPCG11B19/2009G11B2220/20H02K5/15H02K5/173H02K21/22
Inventor 山根拓也
Owner NIDEC CORP