KR970055095A

KR970055095A - Spindle motor

Info

Publication number: KR970055095A
Application number: KR1019950059490A
Authority: KR
Inventors: 신명호
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1995-12-27
Filing date: 1995-12-27
Publication date: 1997-07-31

Abstract

본 발명은 예를 들어 하드디스크를 구동하는 등에 사용되는 스핀들 모터에 관한 것이다.The present invention relates to a spindle motor used for driving a hard disk, for example.

본 발명에 따른 스핀들모터는, 베어링의 내륜이 고정되는 축과, 축에 대해 상대회전하는 회전체에 고정되며 그 내면에 베어링의 외륜이 고정되는 매개부재를 구비하며, 이 매개부재는 축과 동일한 열팽창계수를 가지고 있으므로, 내부의 열방생에 따른 베어링의 변형이 방지되므로 회전체의 회전시 진동이 억제되게 된다.The spindle motor according to the present invention includes a shaft on which an inner ring of a bearing is fixed, and an intermediate member fixed to a rotating body that rotates relative to the shaft and on which an outer ring of the bearing is fixed, the intermediate member being the same as the shaft. Since it has a coefficient of thermal expansion, the deformation of the bearing due to heat generation inside is prevented, so that vibrations during rotation of the rotating body are suppressed.

Description

Spindle motor

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 종래 스핀들모터의 개략적 단면도.1 is a schematic cross-sectional view of a conventional spindle motor.

제2도는 본 발명에 따른 스핀들모터의 개략적 단면도.2 is a schematic cross-sectional view of a spindle motor according to the present invention.

Claims

A spindle motor having a shaft, a bearing in which the inner ring is fixed to the shaft, and a rotating body fixed to the outer ring of the bearing, the inner surface of which is tightly fixed to the outer ring of the bearing and the outer surface of the rotating body. And a hollow intermediate member fixed to the inner surface and having a thermal expansion coefficient of the same size as the thermal expansion coefficient of the shaft.

※ Note: The disclosure is based on the initial application.