Wenderoth, Lind & Ponack, L.L.P.
Fixed-type, constant-velocity universal joint
A fixed type constant velocity universal joint is capable of securing a ball groove depth larger than conventional products and enhancing performance without an increase in a “force of pushing out balls in an axial direction”, the force having an influence on joint efficiency. In the fixed type constant velocity universal joint, a center of each of a plurality of guide grooves of an outer joint member and a center of each of a plurality of guide grooves of an inner joint member are offset with respect to a spherical surface center of an inner surface and a spherical surface center of an outer surface. A ratio (F/PCR) of an offset amount F to a length of a segment (PCR) ranges from 0.045 to 0.065. A ratio (αt/α) when an angle α is the total of an angle αt and an angle αc ranges from 0.45 to 0.65.
NTN Corporation
F F F F F F F
F16D F16D F16D F16D F16D F16D F16D
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Kenta Teruaki Tomoshige
Yamazaki Fujio Kobayashi