Patent ID: 6517062
Filing Date: 2003-02-11
Classification: F16F

Abstract:
A vibration isolator comprising:an inner cylindrical metal member having an axially extending hole, said inner cylindrical metal member having an axial first portion which is coaxially bulged radially outward with respect to an axial second portion of said inner cylindrical metal member in such a manner that said first portion serves as a cylindrical large-diameter portion extending parallel to an axis of said inner cylindrical metal member and having inner and outer diameters which are respectively larger than inner and outer diameters of said second portion; a ring-shaped stopper member made of one of a resin and a metal and fixed directly on an outer peripheral surface of said cylindrical large-diameter portion and projecting radially outward; an outer cylindrical metal member arranged outside said inner cylindrical metal member and said stopper member in a radial direction thereof; a rubber elastic member interposed between said inner cylindrical metal member and said outer cylindrical metal member to elastically connect said inner cylindrical metal member with said outer cylindrical metal member; and a metal support member press-fitted into the axially extending hole of said inner cylindrical metal member, wherein said cylindrical large-diameter portion of said inner cylindrical metal member is not contacting said support member being positioned in said axially extending hole of said inner cylindrical metal member, and an inner surface portion between said first and second portions of said inner cylindrical metal member forms a boundary of said axially extending hole.