Boot for constant velocity universal joint

Abstract

A boot for a constant velocity universal joint, where no portion of the boot interferes with an ear section of a boot band even if the joint is at a high operation angle. The boot is used for a constant velocity universal joint in which a torque transmission member is received between an outer joint member and an inner joint member and in which a shaft connected to the inner joint member projects outside the joint, and the boot is placed between the outer periphery of the outer joint member and the outer periphery of an intermediate section of the shaft. The boot has a tubular large diameter section (1a) fixed to the outer peripheral surface of the outer joint member (2) by the boot band (3), a tubular small diameter section fixed to the outer peripheral surface of the shaft, a bellows section (1d) for connecting the large diameter section and the small diameter section, and a shoulder section (1c) located between the large diameter section and the bellows section and covering the outer peripheral surface on the opening end side of the outer joint member. The shoulder section (1c) is extended by a predetermined length from the boot band (3) to the opening end side of the outer joint member.

Description

technical field [0001] The present invention relates to a protective cover for covering constant velocity universal joints used for driving shafts of automobiles, etc. The shoulder and the corrugated part of the large end of the cover are selected as the boot of the constant velocity universal joint which does not interfere with the boot band even at high operating angles of the joint. Background technique [0002] The constant velocity universal joint is equipped with a corrugated cover for the purpose of preventing the leakage of the grease sealed inside the joint and preventing foreign matter from entering the joint. Both ends of the boot are respectively fitted to the outer ring and the shaft of the constant velocity universal joint, which are outer joint members, and both ends of the boot are pressed and fixed by boot bands. The constant velocity universal joint boot is generally roughly classified into a rubber boot made of a rubber material such as neoprene (CR) and ...

AI Technical Summary

Problems solved by technology

However, if the operating angle of the joint is greater than, for example, 45°, the amount of deformation of the corrugation portion becomes larger, so this structure is still insufficient to completely prevent interference between the ears of the boot band and the corrugation portion, or deflection of the boot band. shift

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