| 摘要 |
PROBLEM TO BE SOLVED: To solve problems of side forces and moments produced by a compression chamber side coil spring and a counter-compression chamber side coil spring, respectively, which cause an increase in sliding loss due to a frictional force between a piston and a cylinder and the abnormal abrasion of a sliding surface. SOLUTION: The positions of the compression chamber side coil spring and the counter-compression chamber side coil spring around the axis are so set that the side forces and the moments direct in the opposite directions respectively to mutually mitigate the side forces and the moments. This constitution can reduce the frictional force between the piston and the cylinder and contact bearing pressure in a diagonal position of the top dead center side and the bottom dead center side of the sliding surface. COPYRIGHT: (C)2003,JPO
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