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Motor unit and disk driving device

A technology for motors and mounting boards, applied in the direction of electromechanical devices, electrical components, electric components, etc., to achieve the effect of reducing warpage

Inactive Publication Date: 2012-01-25
NIDEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a possibility that new warpage will be generated on the circuit board, and other parts of the circuit board will be separated from the mounting board.

Method used

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  • Motor unit and disk driving device
  • Motor unit and disk driving device
  • Motor unit and disk driving device

Examples

Experimental program
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Effect test

Embodiment Construction

[0030] In this specification, the side where the motor part of the circuit board is located is simply referred to as "upper side", and the opposite side is simply referred to as "lower side". In addition, the up-down direction does not indicate a positional relationship or direction when assembled in an actual device.

[0031] figure 1 is a cross-sectional view of the optical disk drive device 10 . exist figure 1 Among them, the optical disc drive device 10 includes a motor unit 11 according to an exemplary embodiment of the present invention. The optical disk drive device 10 includes a motor unit 11 , an access unit 12 , and a box-shaped case 13 that accommodates the motor unit 11 and the access unit 12 inside. exist figure 1 In , the optical disk 9 is shown by a two-dot chain line. The motor unit 11 includes a motor unit 111 , a mounting plate 112 , and a circuit board 113 . The motor unit 111 has a thin shape with a height of several mm to several dozen mm. A chuckin...

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PUM

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Abstract

The present invention provides a motor unit and a disk driving device. The motor unit comprises: a motor part; a mounting plate used for mounting of the motor part; and a circuit substrate fixed on the mounting plate; wherein the circuit substrate is provided with a hole part; the mounting plate comprises a plate part and a caulking part which is protruded upwards from the plate part and inserted into the hole part, the caulking part is formed by expanding an upper part of a tubular part which is protruded upwards from the plate part toward a radial outer side; and an edge of the hole part comprises a contact part which is pushed downward by the upper part and a non-contact part which is not contacted with the upper part.

Description

technical field [0001] The present invention relates to a motor unit used in an optical disk drive device and the like. Background technique [0002] The optical disk drive device "reads" and "writes" information on DVD (Digital Versatile Disc) and Blu-ray Disc. The optical disk drive device includes a motor unit in which a motor and a circuit board are mounted on a mounting board. Japanese Laid-Open Publication No. 2002-262540 discloses a technique in which a printed circuit board is bonded to a mounting base portion with a double-sided tape. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2002-262540 [0004] The optical disk drive device is installed in, for example, a notebook type personal computer or a navigation system. In this case, miniaturization and thinning of the optical disc drive are required. Therefore, the motor unit is also required to be miniaturized and thinned. However, electronic components such as connectors and circuit boards have diffe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/00G11B17/022
Inventor 日高秀彦多多良辰哉
Owner NIDEC CORP