Patent ID: 6076449
Filing Date: 2000-06-20
Classification: F04B

Abstract:
A variable displacement compressor comprising:a housing having a cylinder bore;a piston located in the cylinder bore;a drive shaft rotatably supported by the housing;a rotary support mounted on the drive shaft to rotate integrally with the drive shaft;a drive plate operably connected to the piston to convert rotation of the drive shaft to reciprocation of the piston, wherein the drive shaft has a central support hole into which the drive shaft is inserted, the support hole allowing the drive plate to be supported tiltably on the drive shaft and to slide in axial directions of the drive shaft, and wherein the drive plate slides and tilts on the drive shaft between a maximum inclination position and a minimum inclination position, and wherein the piston moves by a stroke based on the inclination of the drive plate to change the displacement of the compressor, wherein the mass of the drive plate is arranged and located such that the radial position of the drive plate with the drive shaft is maintained constant by centrifugal force when the drive plate rotates, regardless of the inclination of the drive plate, and wherein the drive plate is divided into a first portion and a second portion by an imaginary plane that includes the axis of the drive shaft, wherein centrifugal force acting on the first portion is greater than the centrifugal force acting on the second portion when the drive plate rotates; anda hinge mechanism located between the rotary support and the drive plate, wherein the hinge mechanism rotates the drive plate integrally with the rotary support and guides the tilting motion and the sliding motion of the drive plate.