Invention Grant
- Patent Title: Torque sensor and power steering system using the torque sensor
- Patent Title (中): 转矩传感器和动力转向系统使用扭矩传感器
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Application No.: US13851585Application Date: 2013-03-27
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Publication No.: US09302700B2Publication Date: 2016-04-05
- Inventor: Osamu Yoshida , Tatsuyoshi Maruyama , Kiyotaka Shirakubo
- Applicant: HITACHI AUTOMOTIVE SYSTEMS STEERING, LTD.
- Applicant Address: JP Saitama
- Assignee: HITACHI AUTOMOTIVE SYSTEMS STEERING, LTD.
- Current Assignee: HITACHI AUTOMOTIVE SYSTEMS STEERING, LTD.
- Current Assignee Address: JP Saitama
- Agency: Foley & Lardner LLP
- Priority: JP2012-202208 20120914
- Main IPC: G01B7/04
- IPC: G01B7/04 ; B62D5/04 ; G01L3/10 ; B62D6/10 ; G01L5/22

Abstract:
Torque sensor has: magnetic member; first yoke member having (a) first nail portions arranged concentrically to face the magnetic member in radial direction and (b) first ring portion; second yoke member having (c) second nail portions arranged concentrically so that the first and second nail portions are circumferentially alternately arranged and the second nail portions face the magnetic member in radial direction and (d) second ring portion; first magnetic flux concentration ring provided between the first and second ring portions; second magnetic flux concentration ring provided between the second ring portion and the first magnetic flux concentration ring; and magnetic sensor. The first and second magnetic flux concentration rings and the first and second ring portions are arranged in layers in radial direction. A part or all of axial direction area of the first and second magnetic flux concentration rings is surrounded and shielded by the second ring portion.
Public/Granted literature
- US20140076655A1 TORQUE SENSOR AND POWER STEERING SYSTEM USING THE TORQUE SENSOR Public/Granted day:2014-03-20
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