| 摘要 |
<p>PURPOSE:To reduce suction resistance, preventing fluid leakage, miniaturizing and simplifying a constitution and reducing a cost by supporting a rotary shaft to a journal bearing, constituting it of a slide bearing and a journal part, and also forming a suction passage and a suction port in the journal bearing. CONSTITUTION:When a rotary shaft 24 is rotated, since a double head piston 30a makes a reciprocating motion in a cylinder by swivel motion of a swash plate 27, expansion/contraction are repeated of an operating chamber in each cylinder in both front/rear sides. Here in each journal bearing 25, 26 in both front/rear sides, since each suction passage 38, 39, formed in each journal part 24a, 24b of the rotary shaft 24, is rotated, the suction passage 38 in the front side communicates with a suction port 40a of the cylinder 12a, and also the suction passage 39 in the rear side communicates with a suction port 41a of the cylinder 13a. In each journal bearing 25, 26, since an internal surface of each slide bearing 35, 36 is worked to be accurately finished, a clearance with each journal part 24a, 24b can be obtained very small, and a refrigerant can be prevented from its leak.</p> |
