| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin boot for a constant velocity universal joint having a compact shape and preventing a bellows portion from being caught at an outer ring opening portion. SOLUTION: A cylindrical shoulder portion 25 formed continuously from a large diameter portion 11 and a radial wall portion 26 extending in the inner diameter direction from the shoulder portion 25 are formed between the large diameter portion 11 and the bellows portion 13. A bent portion 27 and a curved portion 32 are formed on the radial wall portion 26. In a bending state of the joint, the bent portion 27 and the curved portion 32 are kept into contact with an outer ring end face 14 to constitute a fulcrum portion for pushing out a trough portion 15 at a position closest to the large diameter portion, of the bellows portion 13 continued to the radial wall portion 26, to a small diameter portion side. COPYRIGHT: (C)2007,JPO&INPIT
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