发明申请
US20050204830A1 Magnetostrictive torque sensor shaft and method for manufacturin the same
审中-公开
磁致伸缩转矩传感器轴和制造方法相同
- 专利标题: Magnetostrictive torque sensor shaft and method for manufacturin the same
- 专利标题(中): 磁致伸缩转矩传感器轴和制造方法相同
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申请号: US10517995申请日: 2003-04-23
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公开(公告)号: US20050204830A1公开(公告)日: 2005-09-22
- 发明人: Akihiro Kuroda , Hiromitsu Kaneda , Yuichi Mizumura
- 申请人: Akihiro Kuroda , Hiromitsu Kaneda , Yuichi Mizumura
- 优先权: JP2002-194391 20020703
- 国际申请: PCT/JP03/05166 WO 20030423
- 主分类号: B62D5/04
- IPC分类号: B62D5/04 ; C21D1/06 ; C21D1/70 ; C21D1/76 ; C21D9/28 ; C22C38/00 ; C22C38/08 ; C23C8/22 ; G01L3/10 ; G01L3/02
摘要:
The present invention improves the magnetization shielding properties of a torque sensor shaft for a magnetostrictive torque sensor. Specifically, according to the present invention, a magnetostrictive torque sensor shaft 2 is provided with a magnetostrictive detection portion 5 and an engaging portion 6 for engaging a power transmission shaft, wherein the torque sensor shaft 2 includes a magnetostrictive material, and is provided with a paramagnetic layer, which contains retained austenite, at a surface of a range that includes at least the engaging portion 6, but excludes the magnetostrictive detection portion 5. Also a method for manufacturing the same is provided.