发明授权
- 专利标题: Worm support device and power assist unit having the same
- 专利标题(中): 蜗杆支撑装置和动力辅助装置具有相同的功能
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申请号: US10537791申请日: 2003-12-05
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公开(公告)号: US07568550B2公开(公告)日: 2009-08-04
- 发明人: Hirotaka Yasuda , Hirotsugu Kusano , Wataru Yamada , Yoshiyuki Saito , Shuzo Hirakushi
- 申请人: Hirotaka Yasuda , Hirotsugu Kusano , Wataru Yamada , Yoshiyuki Saito , Shuzo Hirakushi
- 申请人地址: JP Osaka
- 专利权人: Jtekt Corporation
- 当前专利权人: Jtekt Corporation
- 当前专利权人地址: JP Osaka
- 代理机构: Jordan & Hamburg LLP
- 优先权: JP2002-353474 20021205; JP2003-019355 20030128
- 国际申请: PCT/JP03/15612 WO 20031205
- 国际公布: WO2004/051101 WO 20040617
- 主分类号: B62D5/04
- IPC分类号: B62D5/04
摘要:
Deep groove ball bearings are used as bearings supporting both side portions of a worm. In the first bearing on the side of a motor, the curvature radius of a raceway groove in an inner ring or the curvature radius of a raceway groove in an outer ring are set to a specific numerical range with respect to the diameter of a ball.