Slant plate type compressor with variable displacement mechanism

Details Slant plate type compressor with variable displacement mechanism Slant plate type compressor with variable displacement mechanism

1989-04-28

1990-10-02

Michalsky, Gerald A.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417269, F04B 126

Patent

active

049603663

ABSTRACT:
A slant plate type compressor including a housing having a cylinder block is disclosed. A plurality of cylinders are formed around the periphery of the cylinder block and a piston is slidably fitted within each of the cylinders and is reciprocated by a drive mechnism. The drive mechanism includes a drive shaft rotatably supported in the compressor housing and a coupling mechanism for drivingly coupling the shaft to the pistons such that rotary motion of the shaft is converted into reciprocating motion of the pistons. The coupling mechanism includes a plate having a surface disposed at a slant angle relative to the drive shaft. The slant angle changes in response to the change in pressure in the crank chamber to change the capacity of the compressor. A bias spring is mounted on the drive shaft between the slant plate and the cylinder block and urges the slant plate towards the maximum slant angle. The drive shaft includes one portion having a smaller diameter than the remainder of the drive shaft. The inner diameter of the bias spring is smaller than the diameter of the remainder of the shaft at one end of the spring, and the spring is firmly secured to the shaft at the smaller end by a snap ring disposed on the shaft at the location where the smaller diameter portion of the shaft is integrally formed with the remainder of the shaft to sandwich the end of the spring against the drive shaft.

REFERENCES:
patent: 4037993 (1977-07-01), Roberts
patent: 4428718 (1984-01-01), Skinner
patent: 4475871 (1984-10-01), Roberts
patent: 4480964 (1984-11-01), Skinner
patent: 4543043 (1985-09-01), Roberts
patent: 4586874 (1986-05-01), Hiraga et al.
patent: 4632640 (1986-12-01), Terauchi
patent: 4664604 (1987-05-01), Terauchi
patent: 4732544 (1988-03-01), Kurosawa et al.
patent: 4880360 (1989-11-01), Terauchi et al.

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