| 摘要 |
PROBLEM TO BE SOLVED: To avoid a section interfering with a steering shaft and improve machinability of a guide groove. SOLUTION: Three yokes 1a, 2a are formed via yoke support portions 1b, 2b at the facing ends of an input shaft 1 and an output shaft 2. Between cut-out portions formed between the yokes 1a at one side, the yokes 2a at the other side are each arranged. Spherically recessed portions 1f, 2f are formed along the inside circumferential surface of the yokes 1a, 2a and the yoke support portions 1b, 2b. A sliding ring 5 is provided whose spherical surface slides on the spherically recessed portions 1f, 2f by the spherical surfaces. Clearance grooves 1d, 2d, which the top ends of the yokes 1a, 2a enter when the output shaft 2 is bent to the input shaft 1, are formed on the inside circumferential surface of the yoke support portions 1b, 2b. An inner ring 3 is provided inside the sliding ring 5. Spherical bodies 4 are provided that fit into the inside circumferential guide grooves 1c, 2c on the inner surfaces of the six yokes and the outside circumferential guide grooves 3c of the inner ring 3. The spherical bodies 4 are contained in accommodation holes 5a of the sliding ring 5 for positioning. COPYRIGHT: (C)2009,JPO&INPIT
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