| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent increase in frictional loss due to sliding even when a surface of a resin layer having a swelling prevention agent is in contact with a facing member and slid, and to prevent the resin layer having the swelling prevention agent from peeling from a base material. <P>SOLUTION: The compressor includes: a cylinder having a compression chamber and a blade housing part in communication with the compression chamber; front and rear heads disposed at axial both ends of the cylinder; and a piston disposed inside the compression chamber and the blade housing part. The piston includes: an annular roller disposed at the compression chamber; and a blade extending from the outer circumferential surface of the roller and reciprocally arranged relative to the blade housing part. Resin layers 44a, 44b obtained by layering first to fourth layers are formed on the axial end faces of the piston. From among the first to fourth layers, the second and third layers include the swelling prevention agent. The first layer closest to the base material 43 and the fourth layer farthest from the base material 43 include no swelling prevention agent. <P>COPYRIGHT: (C)2012,JPO&INPIT |
