Patent ID: 6244967
Filing Date: 2001-06-12
Classification: B29L,F16D,F16J,Y10T

Abstract:
A constant velocity universal joint, comprising: a resin boot fixed in position in such a manner that cylindrical boot fixing portions formed at opposite ends of the resin boot with a bellows portion defined by a series of ridges, pleats and troughs and interposed therebetween are fitted on boot attaching portions of the joint and clamped by boot bands mounted on outer peripheral surfaces of the boot fixing portions and thereby fixed on the boot attaching portions,wherein the boot band mounted on at least one of the boot fixing portions of the resin boot comprises a band member of a band-like metal material, the band member being bent in an annular shape and having a joined portion in which opposite ends of the band member are joined together in a state of inner surfaces thereof meeting each other, and a lever member of a metal material, the lever member having higher rigidity than that of the band member, the lever member being attached to one outer surface of the joined portion of the band member,wherein the lever member is folded back by making use of leverage to clamp the boot fixing portion, and then the lever member is placed on and fixed to an outer surface of the band member, andwherein the resin boot is fabricated from an elastomer having a hardness H.sub.D on a D scale of Shore hardness as follows:H.sub.D 38.ltoreq.H.sub.D <H.sub.D 50.