VARIABLE DISPLACEMENT ROTARY COMPRESSOR FOR PREVENTING A SLIP AND COLLISION BETWEEN AN ECCENTRIC BUSH AND A ROTARY SHAFT IN COMPRESSING REFRIGERANT BY FORMING A MOUNTING GROOVE

摘要

PURPOSE: A variable displacement rotary compressor is provided to restricting a slip between an eccentric bush and a rotary shaft by receiving a portion of a constraining ball in a first mounting groove and the rest part of the ball in a second mounting groove. CONSTITUTION: A variable displacement rotary compressor is composed of a housing having two compression chambers with different volumes; two eccentric cams(41,51) disposed on the outsides of a rotary shaft(21) in two compression chambers; two eccentric bushes(42,52) mounted rotatively on the outsides of two eccentric cams; a hanging unit(80) for suspending two eccentric bushes in a mutual eccentric state or non-eccentric state according to the rotational direction change of the rotary shaft; and a constraining ball(90) protruded outside the rotary shaft by centrifugal force generated in turning the rotary shaft to restrain the eccentric bush by suspending a protruded portion in the eccentric bush.