| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To recirculate the refrigerant gas in a crankcase into a suction chamber according to the pressure in the crankcase on the rear end side of a drive shaft while restraining the movement of the drive shaft to the rear end side without installing a dedicated pressurizing spring for pressing the rear end of the drive shaft forward. <P>SOLUTION: A collar 47 fitted to the rear end of a drive shaft 23 comprises a flange part 47a with which a return spring 45 installed between itself and a swash plate 31 is brought into contact and a cylindrical part 47b into which the drive shaft 23 is inserted. A projection 47c on the inner surface of the cylindrical part 47b is fitted into the recess 23a of the drive shaft 23. A sliding bearing 19 rotatably supporting the rear end part of the drive shaft 23 comprises a bearing flange part 19a supporting a thrust load and a bearing cylindrical part 19b supporting a radial load. A groove 47d forming a part of an air bleed passage 51 allowing a crankcase 5 to communicate with a suction chamber 11 is formed in the flange part 47a of the collar 47 opposed to the bearing flange part 19a. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
