发明名称 |
Constant velocity universal joint |
摘要 |
A constant velocity universal joint has high strength and capable of suppressing deformation caused by quenching at an opening end portion of a track groove of an outer joint member. In an undercut-free constant velocity universal joint in which a track groove in a cup portion of the outer joint member has a hardened layer formed by induction quenching, an opening end surface is protruded by a protruding amount t in an axial direction from a groove bottom of the track groove in a relief surface. The protruding amount t satisfies a relation of t=0.037d to 0.185d when a diameter of a torque transmission ball is represented by d. The opening end surface in a protruded portion and an outer surface of the cup portion continuous to the opening end surface have an unhardened layer free from hardening by quenching.
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申请公布号 |
US8226489(B2) |
申请公布日期 |
2012.07.24 |
申请号 |
US20080677191 |
申请日期 |
2008.09.22 |
申请人 |
OOBA HIROKAZU;YOSHIDA KAZUHIKO;SONE KEISUKE;NTN CORPORATION |
发明人 |
OOBA HIROKAZU;YOSHIDA KAZUHIKO;SONE KEISUKE |
分类号 |
F16D3/223;F16D3/20;F16D3/2237;H05B6/02 |
主分类号 |
F16D3/223 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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