JPH0356886U - - Google Patents

Description

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the present invention in a rocking swash plate type compressor, and Figure 1 is a cross-sectional view of the rocking swash plate placed at its maximum capacity position; FIG. 2 is a sectional view of the rocking swash plate placed at the minimum capacity position, FIG. 3 is a line diagram showing the load characteristics of the coil spring, and FIG. 4 is a partial sectional view of a modified example. 1a...Cylinder bore, 2...Crank chamber, 4
... Suction chamber, 5 ... Discharge chamber, 12 ... Drive shaft, 1
6...Slider, 18...Rocking swash plate, 19...Piston, 22...Coil spring.

Claims (1)

[Claims for Utility Model Registration] The crankshaft is equipped with a suction chamber, a discharge chamber, and a crank chamber, and has a swash plate in the crank chamber that converts the rotation of the drive shaft into reciprocating motion of a piston housed in a cylinder bore. In a variable capacity compressor, the stroke of the piston is changed by changing the inclination angle of the swash plate according to the differential pressure between the chamber pressure and the suction pressure to control the compression capacity, a spring is provided on one side of the swash plate to bias the swash plate in a direction of decreasing angle and to maintain the swash plate in a minimum capacity position when the compressor is inactive;
A variable displacement compressor in which the load characteristics of the spring are nonlinear, with a small change in biasing force on the small capacity side and a large biasing force on the large capacity side.