| 摘要 |
PURPOSE:To secure a sufficient oil film between a piston ring and a cylinder bore constantly, and to realize an operation for a long period, by setting the stroke of the piston at the minimum capacity operation of a compressor larger than the width the piston ring contacts to the cylinder bore. CONSTITUTION:When a driving shaft 1 is rotated together with a drive plate 2, a swash plate 3 is oscillated. And a piston 13 contacting with the swash plate 3 is reciprocated in the cylinder bore 16, and a piston ring 14 is slided. Furthermore, a sliding body 7 connected to the swash plate 3 is moved on the driving shaft in the axial direction. In such a compressor, a stopper 8 as a control means to regulate the movement of the sliding body 7 is fixed to the driving shaft 1. And the stroke of the piston 13 at the minimum capacity operation is set larger than the width the piston ring 14 is contacted to the cylinder bore 16. Consequently, a sufficient oil film is secured constantly between the piston ring 14 and the cylinder bore 16, and thereby the minimum capacity operation of the compressor is made possible to carry out for a long period. |
