| 摘要 |
<p>PROBLEM TO BE SOLVED: To inexpensively manufacture a detent mechanism of an oscillation plate constituted by a constant velocity universal joint and having a simple structure in an oscillation plate type variable displacement compressor. SOLUTION: A plurality of guide grooves 6a are formed directly on a ball- shaped outer peripheral face of the oscillation plate 6 driving a piston 8. A plurality of guide grooves 1a parallel with a drive shaft 4 are formed directly on an inner face of a housing 1 corresponding to the guide grooves 6a. One steel ball 15 is inserted between the guide grooves 1a and 6a, respectively, to constitute the constant velocity universal joint by arranging the centers of all the steel balls 15 on the same plane by a retainer 17. Consequently, when a drive plate 5 rotates together with the drive shaft 4, the movement performed by the oscillation plate 6 becomes pure oscillation movement and does not include components of reciprocating rotary movement at all, thereby causing no vibration and noise. Since the detent mechanism is formed in an outer peripheral part of the oscillation plate 6 in this way, it is unnecessary to provide a complicated structural part in a central part.</p> |
