| 摘要 |
PURPOSE:To disperse a load in a bearing part so as to improve durability of a bearing, by fitting an eccentric part of a main shaft to the internal diametric side of the bearing part in a turning scroll and providing a balancer separately from the main shaft in the external diametric side of the bearing part. CONSTITUTION:A compressor, forming a bearing boss part 20 in the back part of a turning scroll 1, fits an eccentric part 9 of a main shaft 6 to the internal diametric side of the boss part 20 through an internal diameter bearing 21 while idly fits a balancer 22, canceling centrifugal force by dead weight of the turning scroll 1, to the external diametric side of the boss part 20 through an external diameter bearing 23. Consequently, the compressor, supporting pressing force and centrifugal force, acting between the main shaft 6 and the bearing boss part 20, to be dispersed to the internal diameter bearing 21 and the external diameter bearing 23, improves durability of the bearing.
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