| 摘要 |
Dual capacity compressor including a power generating part ( 20 ) having a reversible motor ( 21, 22 ) and a crank shaft ( 23 ) inserted in the motor ( 21, 23 ), a compression part ( 30 ) having a cylinder ( 32 ), a piston ( 31 ), and a connecting rod ( 33 ), a crank pin ( 110 ) in an upper part of the crank shaft ( 23 ) eccentric to an axis of the crank shaft, an eccentric sleeve ( 120 ) rotatably fitted to the crank pin ( 110 ), and the connecting rod ( 33 ) respectively, a key member ( 130 ) for positive fastening of the eccentric sleeve ( 120 ) to the crank pin ( 110 ) in all rotation directions of the motor, and an eccentric mass ( 200 ) provided to the eccentric sleeve ( 120 ) for rotating the eccentric sleeve ( 120 ) around the crank pin ( 110 ), thereby preventing relative motion between components that sustain the eccentricity, and permitting a smooth motion between the components.
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