| 摘要 |
PROBLEM TO BE SOLVED: To provide a constant velocity fixed joint capable of further easily performing machining and assembling. SOLUTION: A first external raceway forms a raceway pairing in which a control angle is opened in a first shaft direction and a first ball is held, together with a first internal raceway. A second external raceway forms a raceway pairing in which a control angle is opened in a second shaft direction R2 and a second ball is held, together with a second internal raceway. In this case, the control angles are defined as angles formed by tangential lines of ball contacts within the raceways. In an external joint part, a stopping/guiding surface is formed for a spherical external surface of a ball cage at the inside. The stopping/guiding surface has no undercut from the viewpoint from the second shaft direction R2. The ball cage forms a stopping/guiding surface for a spherical external surface in an internal joint part at the inside and the stopping/guiding surface has no undercut from the viewpoint of a first shaft direction R1.
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