Patent ID: 8262488
Filing Date: 2012-09-11
Classification: F16D,F16J

Abstract:
1. A silicone boot for a constant velocity universal joint, comprising: a larger diameter portion configured to be attached to an outer joint member of a constant velocity universal joint; a smaller diameter portion configured to be attached to a shaft coupled with an inner joint member of the constant velocity universal joint; and a bellows portion, said bellows portion being arranged between said larger diameter portion and said smaller diameter portion, and having peak portions and valley portions formed alternately with each other, wherein said smaller diameter portion comprises a shaft attachment portion having a radially outer surface with a fitting groove for attachment of a boot band, and a thin portion extending from said shaft attachment portion so as to be coupled with the bellows portion through intermediation of a thick portion and configured to allow buckling deformation with respect to said shaft attachment portion and said bellows portion, and wherein a circumferential groove is disposed in a corner portion on a side of said thick portion, and said thick portion has a larger diameter than each other portion of said smaller diameter portion.