| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint boot superior in durability when rotated at a wide angle in a bending and deforming state. SOLUTION: This joint boot 10 is composed of a small diameter installation part 12 installed on a shaft 2, a large diameter installation part 14 installed in an outer case 1, and a bellows part 16 connecting both. A fixing recessed part 24 of the large diameter installation part 14 is connected to the bellows part 16 via a cylindrical connecting part 40 for surrounding the outer periphery of a tip part 1B of the outer case 1. The cylindrical connecting part 40 is formed in an inverse tapered cylindrical shape inclined so as to gradually become a large diameter toward the bellows part 16 side. The cylindrical connecting part 40 is connected to a first trough part 30A of the bellows part via an inclined face part 42. A top part 44A of a crest 44 composed of the cylindrical connecting part and the inclined face part is deviatively arranged to the bellows 16 side. Thus, the crest 44 is folded up in an outward overhanging state on the bending inside (i) in bending and deforming. COPYRIGHT: (C)2007,JPO&INPIT
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