Starting displacement setting device in variable displacement co

Details Starting displacement setting device in variable displacement co Starting displacement setting device in variable displacement co

1989-04-18

1990-11-27

Smith, Leonard E.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417270, 92 122, F04B 126

Patent

active

049732293

ABSTRACT:
A driving rotary shaft is rotatably carried on a compressor body of a variable displacement compressor. On axial one side of a sleeve slidably carried on the driving rotary shaft, there is disposed a first spring of a displacement setting device for biasing the sleeve in one axial direction and holding a stopper, with which the sleeve is engageable, at a stop position on the driving rotary shaft. On the axial other side of the sleeve, there is disposed a second spring of the displacement setting device for biasing the sleeve in the other axial direction, the second spring being weaker than the first spring. At the starting of the compressor, the first spring holds the stopper at the stop position against a repulsive force of the second spring to hold the sleeve engaged with the stopper at a fixed position. This makes it possible to set the strengths of individual members and the capacity of a clutch to be smaller than those in the prior art, leading to reductions in size, weight and cost of the entire compressor.

REFERENCES:
patent: 4105370 (1978-08-01), Brucken et al.
patent: 4506648 (1985-03-01), Roberts

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