| 摘要 |
PURPOSE:To reduce the abrasion between a partition plate and a partition-plate groove by according the angle of an inclined surface at the corner part of the suction side opening of the partition-plate groove with the inclination angle of the partition plate. CONSTITUTION:A partition plate 10 for partitioning into the space 11 on a suction side and the space 12 on a compression-chamber side is inserted in slidable ways into a partition-plate groove 13 formed on a cylinder part piece 6, and always pushed onto a piston 7 side by a spring 14. A minute surface 16 having an angle nearly equal to the inclination angle for the partition-plate groove 15 which is generated in a free gap between the partition-plate groove 13 when the partition plate 10 gets into the inside of a cylinder 5 most deeply. Although the partition plate 10 is brought into contact in the state inclined by the free gap portion between the partition-plate groove 13 by the difference between the pressure in the space 11 on the suction side and the pressure in the space 12 on the compression chamber side, the contact between the partition plate 10 is performed in surface contact, since the minute inclined surface 16 is formed, and thus the abrasion between the partition plate 10 and the partition-plate groove 13 can be reduced markedly. |
