| 摘要 |
PROBLEM TO BE SOLVED: To provide a bush bearing capable of allowing an air flow caused by the air pressure in a gear box to flow in and out with respect to a gear box without any problem even when the bush bearing is used for slidably supporting a rack shaft in a steering mechanism of an automobile. SOLUTION: This bush bearing 1 has a cylindrical inner peripheral face 3 with which the rack shaft 2 cones into slidable contact in the axial direction A, and a slit 6 extended from one end face 4 to the other end face 5 in the axial direction A to reduce the diameter of the inner peripheral face 3. Further the cylindrical outer peripheral face 7 is provided with a bush body 10 having circular circumferential grooves 8, 9 and endless circular elastic members 11, 12 respectively fitted to the circumferential grooves 8, 9 of the bush body 10, and having outer diameters D2 larger than a diameter D1 of the outer peripheral face 7 of the bush body 10. COPYRIGHT: (C)2004,JPO&NCIPI
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