Patent ID: 7104764

Claim:
A variable capacity rotary compressor, comprising: a housing to define first and second compression chambers having different capacities therein; a rotating shaft to be placed in the first and second compression chambers; first and second eccentric cams mounted to the rotating shaft, to be placed in the first and second compression chambers, respectively; first and second eccentric bushes to rotatably fit over the first and second eccentric cams, respectively; a cylindrical connecting part to integrally connect the first and second eccentric bushes to each other, with a locking slot being provided around the connecting part; a locking pin mounted to the rotating shaft, to project from the rotating shaft, and locked by either of first and second ends of the locking slot, according to a rotating direction of the rotating shaft, making one of the first and second eccentric bushes eccentric from the rotating shaft while making a remaining one of the first and second eccentric bushes be released from eccentricity from the rotating shaft, the first and second eccentric bushes being eccentric in opposite directions; and a restraining unit to fit over the locking pin, to be reciprocated in a radial direction of the rotating shaft, the restraining unit outwardly moving from the rotating shaft by a centrifugal force when the rotating shaft is rotated, and being stopped by either of the first and second ends of the locking slot to restrain the connecting part.