| 摘要 |
PROBLEM TO BE SOLVED: To prevent the intrusion of dust, muddy water and the like into a boot and to surely adjust the change of an internal pressure caused by the temperature rise of a boot by the external heat, in the boot for the universal joint. SOLUTION: This boot 60 for the universal joint capable of sealing a connection space 50 of the universal joint 20 connecting two shafts 11, 12, and having a small-diameter fitting part 62 to an inner member 23, has a heat-sensitive body 70 for sealing and attaching the small-diameter fitting part 62 to the inner member 23 at a low atmospheric temperature, separating the small-diameter fitting part 62 from the inner member 23 at a high temperature, and forming a circular clearance 67 for communicating the connection space of the universal joint with the external, with the inner member 23. COPYRIGHT: (C)2005,JPO&NCIPI
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