| 摘要 |
PURPOSE: A rotational speed variable type air conditioner compressor is provided to reduce a noise and vibration generated in a vehicle by preventing excess power by automatically interrupting power transmitted from an engine if an air compressor rotates at a high speed. CONSTITUTION: An inner bearing(33) is combined with an outer peripheral surface of a compressor shaft(31) to transmit power and has a plurality of screw threads(33a) formed on an outer peripheral surface thereof on the slant in one direction. An air conditioner compressor pulley(4) is inserted into the inner bearing, being separated from the outer peripheral surface of the inner bearing and has protrusion parts(4a) protruded toward the inner bearing and concave groove parts(4c) depressed inward, wherein the protrusion parts and the concave groove parts are consecutively formed. A clutch element(35) is installed in a space between valley parts(33c) of the screw threads formed at the inner bearing and the air conditioner pulley to selectively connect or disconnect rotary power transmitted to the inner bearing by using centrifugal force generated according to rotational speed of the air conditioner compressor pulley.
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