| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a piston capable of inhibiting misalignment among disc springs in a piston provided with a plurality of disc springs. <P>SOLUTION: The piston 10 comprises a piston base portion 20, a piston movement portion 30, a housing portion 70 formed between the piston base portion 20 and the piston movement portion 30, a plurality of ring-like disc springs 50 that is housed in the housing portion and placed over each other and a first and second retainers 41 and 42 that are provided between a plurality of the disc springs 50. The first and second retainers 41 and 42 comprise a plurality of piece bodies 80 each comprising a pinched portion 81 pinched between the disc springs 50 and a misalignment stopper 82 formed integrally with the pinched portion 81 and along the outer circumferential side surface 52a or inner circumferential side surface 53a of both disc springs 50 that pinch the pinched portion 81 and a connection portion 90 for annularly connecting the piece bodies 80. <P>COPYRIGHT: (C)2012,JPO&INPIT |
