| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a plain bearing for parking brake which can move a camshaft in a stable and smooth conditions without rotating or falling out a bush, even if a caliper body is made of aluminum alloy. SOLUTION: By forming a cylindrical bush 11 which holds a camshaft in a winding bush and setting a circumferencial clearanceδin its opening condition in the specified dimension and fitting it elastically into the bearing hole by strong fitting power, the diameter of the bush is enlarged according to the enlarged diameter of bearing hole by thermal expansion, enough fitting power can be held even if it is a caliper body made of aluminum alloy and with large thermal expansion coefficient, and the rotation or fall out of the bush 11 can be protected and can rotate the camshaft in stable and smooth conditions.</p> |
