Wobble plate type refrigerant compressor having a ball-and-socket joint lubricating mechanism

摘要

A wobble plate type refrigerant compressor having a lubricating mechanism provided at a ball-and-socket joint between a wobble plate and a piston rod is disclosed. A wobble plate type refrigerant compressor includes a compressor housing having a cylinder block. 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 crankcase is formed between the cylinder block and a front end plate of the compressor housing. The drive mechanism includes a drive shaft, a rotor fixed to the drive shaft and a wobble plate disposed on an inclined surface of the rotor. The piston rod connects the wobble plate to the piston. A ball at one end of the rod is received in a socket formed at the wobble plate to form a ball-and-socket joint. A hole is formed at the wobble plate to link one end surface of the wobble plate to the friction surface of the ball-and-socket joint. A pair of grooves extending from one opening of the hole and terminating near the outer periphery of the wobble plate are formed at one end surface of the wobble plate. Thereby, the lubricating oil adhering to one end surface of the wobble plate is effectively led to the friction surface of the ball-and-socket joint.