| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixed type constant velocity universal joint having an inner ring, a cage and a torque transmitting ball formed in a temporarily assembled unit, the cage having a joint-corner-side end which is thin and liable to strength poverty but becomes thicker for more strength. SOLUTION: In the fixed type constant velocity universal joint, the inner peripheral face of the cage 40 contacting the inner ring 20 consists of a spherical portion 46a located on the opening side of an outer ring 10 and a cylindrical porion 46b located on the corner side of the outer ring 10. The cylindrical portion 10b permits the axial movement of the inner ring 20 in a predetermined range, and when the inner ring 20 is at an axial-movement stroke end, the torque transmitting ball 30 is stored in a pocket 42 of the cage 40. An inner diameter B<SB>6</SB>of the cage 40, located on the outer ring corner side of the pocket 42, is set to be smaller than an cage inner diameter B<SB>5</SB>which restricts the axial-movement stroke end of the inner ring 20 and to be larger than a maximum diameter A<SB>2</SB>of a non-spherical portion of the inner ring 20. COPYRIGHT: (C)2007,JPO&INPIT
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