Rubber bushing

A rubber bushing comprising:

• a metal inner cylindrical member,
• a ring disposed integrally on an outer peripheral surface of said inner cylindrical member and having a non-circular radial cross-section,
• an elastic rubber member formed on an outside surface of said inner cylindrical member, and
• an outer cylindrical member connected to said inner cylindrical member and said ring by means of said elastic member;
• wherein a part of said outer peripheral surface of said inner cylindrical member has a roughened surface, and said ring is a resin ring molded on said roughened surface;
• said ring including two diametrically opposed radial projections extending outward therefrom and surrounded by said elastic member.

A rubber bushing, comprising:

• an inner cylindrical member having roughened portions formed on a part of an outer peripheral surface thereof;
• a ring comprising resin, said ring disposed integrally on said part of said outer peripheral surface on which said roughened portions are formed, said ring having a non-circular shape comprising a non-circular cross-section taken in a radial direction with respect to a cylindrical axis of said inner member;
• an elastic member comprising rubber, said elastic member formed outside said inner cylindrical member;
• an outer cylindrical member connected to said inner cylindrical member by means of said elastic member;
• and
• said elastic member further including depressions formed at both ends thereof and which descend from free ends of said inner cylindrical member and ascend to free ends of said outer cylindrical member so as to form built-up portions on the free ends of said outer cylindrical member.