Invention Grant
- Patent Title: Shaft for steering device, method of manufacturing shaft for steering device, and electric power steering device
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Application No.: US16609774Application Date: 2017-06-22
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Publication No.: US11383757B2Publication Date: 2022-07-12
- Inventor: Kaname Yasuda , Tatsuya Suehiro , Kazuya Yamada
- Applicant: NSK Ltd.
- Applicant Address: JP Tokyo
- Assignee: NSK Ltd.
- Current Assignee: NSK Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- International Application: PCT/JP2017/022991 WO 20170622
- International Announcement: WO2018/235222 WO 20181227
- Main IPC: B62D1/20
- IPC: B62D1/20 ; B21K1/06 ; B62D5/04
Abstract:
A shaft for a steering device has a first portion, a second portion, and a third portion that is a shaft integrated with the first portion and the second portion and couples the first portion and the second portion in a first direction. The outer diameter of the third portion is smaller than the length of the second portion in a second direction intersecting with the first direction, and is constant across a direction extending along the first direction. The hardness of the third portion is greater than the hardness of the second portion, and is constant across the direction extending along the first direction.
Public/Granted literature
Information query
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