F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
230/77, 26/96
F04B 1/26 (2006.01) F04B 27/10 (2006.01) F04B 27/18 (2006.01)
Patent
CA 1332930
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 mechanism. A crank chamber is formed between the cylinder block and front end plate of the compressor housing. The drive mechanism includes a drive shaft rotatably supported in the compressor housing, a rotor coupled to the drive shaft and rotatable therewith, and a coupling mechanism for drivingly coupling the rotor to the pistons such that rotatory motion of the rotor 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 a change in pressure in the crank chamber to change the capacity of the compressor. The compressor housing includes a rear end plate including suction and discharge chambers. A communication path communicates the crank chamber and the suction chamber. A valve control mechanism controls the opening and closing of the communication path to cause a change in pressure in the crank chamber. 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 drive shaft at one end of the bias spring and the bias spring is firmly secured to the drive shaft at the smaller end by a snap ring disposed on the drive shaft at the location where the smaller diameter portion of the drive shaft is integrally formed with the remainder of the drive shaft to sandwich the end of the bias spring against the drive shaft.
598225
Sanden Corporation
Sim & Mcburney
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