发明授权
- 专利标题: Noise reduction electric power steering apparatus
- 专利标题(中): 降噪电动助力转向装置
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申请号: US11656494申请日: 2007-01-23
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公开(公告)号: US07591341B2公开(公告)日: 2009-09-22
- 发明人: Yuuji Shimamoto , Keizo Arita , Kouji Kitahata , Naoki Uchida
- 申请人: Yuuji Shimamoto , Keizo Arita , Kouji Kitahata , Naoki Uchida
- 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: Birch, Stewart, Kolasch & Birch, LLP
- 优先权: JP2006-015175 20060124
- 主分类号: B62D5/04
- IPC分类号: B62D5/04
摘要:
An electric power steering apparatus is provided with a worm which is a driving gear interlocked with an electric motor for assisting steering, and a worm wheel which is a driven gear having an annular teeth body made of synthetic resin meshing with the worm and a metallic core body coupling the annular teeth body and is attached to the steering shaft. Protrusions are provided on a side surface of the annular teeth body in a face width direction at a plurality of circumferential positions from which a distance to a center of rotation is different from each other, and stirred lubricating fats and oils applied around the worm wheel. As a result, the lubricating fats and oils can be moved to between tooth surfaces of a meshing portion between the worm and worm wheel.
公开/授权文献
- US20070193820A1 Electric power steering apparatus 公开/授权日:2007-08-23