发明授权
- 专利标题： Ball screw device, linear actuator and vehicle steering system
- 专利标题（中）： 滚珠丝杠装置，线性执行器和车辆转向系统
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申请号： US13877455申请日： 2011-09-29
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公开(公告)号： US08960037B2公开(公告)日： 2015-02-24
- 发明人: Kosuke Yamanaka
- 申请人： Kosuke Yamanaka
- 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： Oliff PLC
- 优先权： JP2010-225062 20101004
- 国际申请： PCT/IB2011/002287 WO 20110929
- 国际公布： WO2012/046116 WO 20120412
- 主分类号： F16H1/24
- IPC分类号： F16H1/24 ; F16H25/22 ; B62D5/00 ; B62D5/04
摘要：
A ball screw device has a plurality of spiral raceways. One end and the other end of each raceway is connected via a bridge. An annular flange of a ball nut has a plurality of mounting portions at equal intervals in a circumferential direction. A fixing screw is fitted to each mounting portion. The bridges arranged so as to overlap with the annular flange in position in an axial direction are arranged at positions different in the circumferential direction from positions at which the mounting portions are arranged, and are arranged at unequal intervals in the circumferential direction.
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