| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a constant velocity universal joint boot for improving durability by keeping a good balance among abrasion between crests, abrasion between a root and a shaft, and fatigue of a crest and root. Ž<P>SOLUTION: The constant velocity universal joint boot includes a large-diameter portion 13 mounted on an outer joint member of a constant velocity universal joint, a small-diameter portion 14 mounted on a shaft 9 connected to an inner joint member of the constant velocity universal joint, and a bellows portion 15 arranged between the large-diameter portion 13 and the small-diameter portion 14. The bellows portion 15 includes a plurality of crests 7, a plurality of roots 6 alternatively arranged with the crests 7 along an axial direction, and a plurality of connection portions 12 for connecting the neighboring crest 7 and root 6. An outer diameter edge of a crest 7 is positioned on or inside of a line L1 connecting an outer diameter edge of the crest 7 arranged nearest the large-diameter portion 13 and an outer diameter edge of the crest 7 arranged nearest the small-diameter portion 14. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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