Bush bearing and rack-and-pinion type steering apparatus for automobile using the same

A bush bearing comprising:

• a synthetic resin-made bush including a flexible semi-split cylindrical body having on an inner surface thereof an abutment portion for slidably abutting against a rack shaft, and including a flexible open-ended annular body which has a first semi annular portion formed integrally on one end face of said semi-split cylindrical body in an axial direction of said semi-split cylindrical body and a pair of extended portions which extend from both end portions of said first semi annular portion in a circumferential direction of said flexible open-ended annular body, respectively, and whose respective distal ends are opposed to each other with a clearance in the circumferential direction;
• and an elastic member including first elongated semi cylindrical elastic body and first and second retained portions, said first elongated semi cylindrical elastic body having terminated portions in both end thereof in said circumferential direction, respectively, said first and second retained portions being formed on said terminated portions and extending in said axial direction, respectively, said first elongated semi cylindrical elastic body abutting against an outer surface of said semi-split cylindrical body, the first and second retained portions being respectively retained by both end portions of said semi-split cylindrical body in the circumferential direction.