Patent ID: 7950904

Claim:
A compressor, comprising: a drive shaft to which a swash plate is inclined coupled so as to be rotatable in a swash plate chamber in the compressor, the drive shaft including a passage arranged so refrigerant inhaled from outside can flow through the passage to cylinder bores in the compressor, the passage including at least one inlet hole communicating with a swash plate chamber and a pair of outlet holes positioned in opposite directions to each other and spaced from the inlet hole; front and rear cylinder blocks including a shaft supporting hole for inserting the drive shaft, a plurality of cylinder bores being formed at both sides of the swash plate chamber, and a communication passage for communicating the shaft supporting hole and each cylinder bore so that refrigerant inhaled into the passage can be inhaled into each cylinder bore in turn, when the drive shaft is rotated; a plurality of pistons which are respectively coupled through shoes to a circumference of the swash plate and reciprocatable in the cylinder bores according to the rotation of the swash plate; a thrust bearing between the swash plate and the cylinder blocks and so as to support both sides of the swash plate and also coupled to the drive shaft; front and rear housings which are coupled to both sides of the front and rear cylinder blocks so as to have a discharge chamber therein; a valve unit between the front and rear cylinder blocks and the front and rear housings; and the swash plate including at least one sub-inlet hole, one end of the sub-inlet hole opening in a contact surface of a race of the thrust bearing and the other end of the sub-inlet hole communicating with the inlet hole of the passage and arranged to transfer refrigerant in the swash plate chamber to the inlet hole of the passage and to lubricate a contact surface of a roller and the race of the thrust bearing.