Motor and disk driving device

A technology of rotating drive and mounting board, applied in electromechanical devices, electric components, connection with control/drive circuits, etc., can solve problems such as warpage of printed circuit boards
CN102044936BInactive Publication Date: 2015-01-21NIDEC CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NIDEC CORP
Publication Date
2015-01-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention provides a motor which comprises the following components: a stationary part, a rotating part which is supported by the stationary part at a state of rotating round a central shaft that extends vertically, a mounting plate for fixing stationary part, and a circuit substrate which is configured at an upper side of the mounting plate and is provided with an electronic circuit that is used for rotatably driving the rotating part relatively to the stationary part. The stationary part is provided at one side of a central position in a length direction of the circuit substrate. The circuit substrate is provided with a connector which is provided at the other side of the central position in the length direction. The mounting plate is provided with a riveting partwhich abuts against an upper surface of the circuit substrate for fixing the circuit substrate. At least one riveting part is configured at a position of the other side of one end at one side of the connector. The circuit substrate is mechanically fixed on the mounting plate at the periphery of the connector where warpage easily generates in the circuit substrate. Therefore, the circuit substrate can be fixed on the mounting plate without pushing the circuit substrate to the upper surface of the mounting plate.
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Description

technical field

[0001] The invention relates to a motor and a disk drive device. Background technique

[0002] A brushless motor for rotating a disk is mounted on a disk drive device such as an optical disk drive. The structure of the conventional brushless motor is described in Unexamined-Japanese-Patent No. 2002-262540, for example. The brushless motor described in this publication has a mounting base for mounting the motor, and a printed circuit board on which at least part of a circuit for driving and controlling the motor is mounted.

[0003] Patent Document 1: Japanese Laid-Open Publication No. 2002-262540

[0004] In the brushless motor described in Japanese Laid-Open Publication No. 2002-262540, the printed circuit board is glued and fixed on the mounting base with double-sided adhesive. However, when various electronic components are soldered to a printed circuit board, the printed circuit board may warp due to heat. When fixing a warped printed circuit board to...

Claims

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