VARIABLE CAPACITY VANE COMPRESSOR HAVING AN IMPROVED BEARING FOR A CAPACITY CONTROL ELEMENT

摘要

A variable capacity vane compressor has a thrust bearing received in an annular recess formed in the inner peripheral surface of a through hole of a side block through which a drive shaft extends. The thrust bearing axially supports a capacity control element for controlling timing of start of compression of refrigerant gas. An annular member is force-fitted in the annular recess to urge one race of the thrust bearing against the side block. Another race of the thrust bearing is slidably fitted in the inner peripheral surface of the annular member. This race is force-fitted in a hole of the capacity control element through which the drive shaft extends. The inner peripheral surfaces of the two races are spaced from the outer peripheral surface of the drive shaft.