| 摘要 |
<p>PURPOSE:To efficiently lubricate the sliding contact part of the periphery of a semi-spherical shoe by providing oil sump spaces between a projecting shoe piece and a flat shoe piece which form a semi-spherical shoe, and communicating the oil sump spaces with a swash plate chamber through oil paths. CONSTITUTION:A semi-spherical shoe 9 is interposed between a swash plate 3 and a piston 7 on a rotary shaft 4. Intake chambers 11a, 12a are communicated with a swash plate chamber 13 through intake passages 1a, 2a. A projecting shoe piece 9a and a flat shoe piece 9b are connected to each other to form the semi-spherical shoe 9. Oil sump spaces S2, S3 are provided between the projecting shoe piece 9a and the flat shoe piece 9b. Oil passages L1, L2 for communicating the swash plate chamber 13 with the oil sump spaces S2, S3 are disposed in the semi-spherical shoe 9. Thus, while reduction of the pressure receiving area of the semi-spherical shoe can be avoided, the sliding contact part of the periphery of the semi-spherical shoe can be lubricated with good efficiency.</p> |
