Invention Grant
- Patent Title: Fixed-type constant velocity universal joint
- Patent Title (中): 固定式等速万向节
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Application No.: US12523094Application Date: 2008-01-07
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Publication No.: US08172689B2Publication Date: 2012-05-08
- Inventor: Tomoshige Kobayashi , Teruaki Fujio , Hisaaki Kura , Shin Tomogami , Takeshi Kohara
- Applicant: Tomoshige Kobayashi , Teruaki Fujio , Hisaaki Kura , Shin Tomogami , Takeshi Kohara
- Applicant Address: JP Osaka
- Assignee: NTN Corporation
- Current Assignee: NTN Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2007-024426 20070202
- International Application: PCT/JP2008/050047 WO 20080107
- International Announcement: WO2008/096558 WO 20080814
- Main IPC: F16D3/224
- IPC: F16D3/224

Abstract:
A fixed-type constant velocity universal joint can sufficiently interpose a lubricant between a torque transmitting ball and a guide groove, and reduce frictional force. The fixed-type constant velocity universal joint of the present invention includes an outer joint member 1 that is filled with a lubricant and on which a guide groove 1b that extends in an axial direction is formed on a spherical inner circumferential surface 1a, an inner joint member 2 provided on an inner diameter side of the outer joint member 1 and on which a guide groove 2b that extends in the axial direction is formed on a spherical outer circumferential surface 2a, a torque transmitting ball 3 interposed between opposing guide grooves 1b and 2b of the outer joint member 1 and the inner joint member 2 such as to roll freely, and a cage 4 that holds each ball 3. Numerous miniscule recesses are randomly formed on a surface of the ball 3.
Public/Granted literature
- US20100099504A1 FIXED-TYPE CONSTANT VELOCITY UNIVERSAL JOINT Public/Granted day:2010-04-22
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