Variable displacement compressor

Details Variable displacement compressor Variable displacement compressor

1998-12-28

2000-04-04

Nguyen, Hoang

Expansible chamber devices

Relatively movable working members

Interconnected with common rotatable shaft

417269, F01B 300

Patent

active

060447516

ABSTRACT:
A variable displacement compressor including a housing assembly, a drive shaft rotatably supported in the housing assembly, a cam plate provided at a generally center thereof with a through hole, through which the drive shaft extends, and provided in a wall surface of the through hole with a support portion abutted onto the drive shaft to establish a slidable support for the cam plate on the drive shaft, a joint mechanism for connecting the cam plate with the drive shaft to rotate the cam plate together with the drive shaft, a piston engaged with the cam plate to be reciprocated in a cylinder due to a rotation of the cam plate, a control mechanism for changing an inclination of the cam plate on the drive shaft to adjust a compressor displacement, and a friction reducing coating layer for reducing friction force caused between the drive shaft and the support portion of the cam plate during an operation for adjusting the compressor displacement. The friction reducing coating layer is provided on the wall surface of the through hole to lower a coefficient of friction of the support portion.

REFERENCES:
patent: 4174191 (1979-11-01), Roberts
patent: 4846049 (1989-07-01), Terauchi
patent: 4979877 (1990-12-01), Shimizu
patent: 5385450 (1995-01-01), Kimura et al.
patent: 5407328 (1995-04-01), Kimura et al.
patent: 5529461 (1996-06-01), Kawaguchi et al.

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