| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of part items and facilitate the assembly of a valve by disposing only one oil valve between an oil piston sucking and delivering oil and an oil cover so as to suck and deliver the oil. SOLUTION: Functions as a suction valve and a delivery valve are provided to one oil valve 140. When a compressor drives and a frame forming a compression unit vibrates in lateral direction, an oil cylinder 111 formed in an oil feeder frame 110 also vibrates in lateral direction. Thus, because the oil piston 130 inserted into the inside of the oil cylinder 111 has an inertia force resulting from the reciprocating motion of the oil cylinder 111, a pressure difference occurs repeatedly in the right and left side areas of the oil piston 130. Utilizing this repetitive pressure difference, the oil valve 140 sucks and delivers oil by alternately opening and closing the oil suction port 121 in the oil cover 120 and the oil delivery port 113 in the oil feeder frame 110.
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