| 摘要 |
PROBLEM TO BE SOLVED: To provide a boot for a constant velocity universal joint which allows a high angle of a bending operation angle (50°or wider) without deteriorating durability. SOLUTION: A recessed groove 13 is annularly formed in a minimum diameter valley part 11a of a bellows 7c in a resin boot 7. When the boot 7 takes a bending operation angle, the minimum diameter valley part 11a is allowed to be elastically deformed. When the boot 7 takes a high bending operation angle (50°or wider), a mountain part 10 of the bellows 7c is recessed to prevent the deterioration in durability of the boot 7. COPYRIGHT: (C)2009,JPO&INPIT
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