Invention Grant
- Patent Title: Torque transmission joint and electric-powered power steering apparatus
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Application No.: US16492268Application Date: 2018-03-28
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Publication No.: US11648978B2Publication Date: 2023-05-16
- Inventor: Toru Segawa , Ryou Oosawa , Toru Ishii , Ryota Sugihara , Takeshi Yamamoto , Akihide Fujita
- Applicant: NSK LTD.
- Applicant Address: JP Tokyo
- Assignee: NSK, LTD.
- Current Assignee: NSK, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Hartman Global IP Law
- Agent Gary M. Hartman; Domenica N. S. Hartman
- Priority: JP 2017130198 2017.03.07 JP 2017069363 2017.03.30 JP 2017201226 2017.10.17 JP 2018037168 2018.03.02
- International Application: PCT/JP2018/012668 2018.03.28
- International Announcement: WO2018/181437A 2018.10.04
- Date entered country: 2019-09-09
- Main IPC: B62D5/04
- IPC: B62D5/04 ; F16D3/74

Abstract:
A torque transmission joint to suppress occurrence of noise when reversing the direction of rotation of a drive shaft. A first transmission member fixed to an output shaft (the drive shaft) is engaged with a first elastic member such that a first gap in a circumferential direction is interposed, as well as with an intermediate transmission member such that a larger gap in the circumferential direction is interposed. A second transmission member fixed to an end portion of a worm is engaged with a second elastic member such that a second gap in the circumferential direction is interposed, as well as with the intermediate transmission member such that a larger gap in the circumferential direction is interposed. First and second annular convex portions are fitted to, respectively, first and second concave portions to prevent separation of the first and second elastic members with respect to the intermediate transmission member.
Public/Granted literature
- US20210139072A1 TORQUE TRANSMISSION JOINT AND ELECTRIC-POWERED POWER STEERING APPARATUS Public/Granted day:2021-05-13
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