| 摘要 |
PROBLEM TO BE SOLVED: To provide the boots for a constant-velocity joint that can control effectively the cracking in a small bore pipe by the stress when a bellows part bends in the small angle. SOLUTION: A small bore pipe part 1 to form a clamp groove 10 on an outer circumference face has a cylindrical surface part 12 extending directly to a shaft that is formed in series order toward the bellows part from a side wall 11 on the bellows part side of the clamp groove 10, a slope part 13 to extend on a slant in radial outside toward the bellows part from the end part on the bellows part side of the cylindrical surface part 12, a vertical wall part 14 to extend in direct toward a radial outside from the end part on the bellows part side of the slope part 13. The concentration of the stress on the special place of the small bore pipe part 1 can be controlled by the stress release actions of these cylindrical surface part 12, slope face part 13 and vertical wall face part 14. COPYRIGHT: (C)2006,JPO&NCIPI
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