| 摘要 |
PURPOSE: An abrasion preventing device of a scroll compressor is provided to hold the lubrication characteristic of a frame bush and to restrict abrasion of the frame or a driving shaft in advance by making the frame bush interposed between the frame and the driving shaft from carbon fibers instead of lead. CONSTITUTION: A scroll compressor is composed of a fixed scroll; an orbiting scroll engaged with the fixed scroll to form a plurality of compression chambers, which move continuously, together with the fixed scroll; a frame for rotatively supporting the orbiting scroll in the axial direction and having a shaft hole bored in the central part; a driving shaft inserted into the shaft hole of the frame to support radially and rotatively combined with a rotor of a driving motor to transmit rotary power to the orbiting scroll; and a frame bush(10) interposed between sliding surfaces of the frame and the driving shaft to form each bearing surface with inner and outer peripheral surfaces. The frame bush comprises a steel layer(11) formed by steel rolled sheets to form an outer peripheral layer; a sintering layer(12) made from much copper, a little stannum, and little phosphorus to form an intermediate layer; and a Teflon layer(13) made from much Teflon, a small quantity of lead bronze, and the constant amount of carbon fibers to form an inner peripheral layer.
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