| 摘要 |
PROBLEM TO BE SOLVED: To provide a low cost compressor of high reliability capable of surely raising oil even at low speed operation. SOLUTION: An insertion part 145 having a spiral projection 149 provided on an outer circumference is rotatably supported in a cylindrical cavity part 142 by a shaft part 157 coaxially formed in the cylindrical cavity part 142, oil can be surely supplied even during low speed operation and reliability can be increased with a low cost structure by providing an oil pump 140 provided with a means suppressing rotation of an insertion part 145. COPYRIGHT: (C)2006,JPO&NCIPI
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