| 摘要 |
PROBLEM TO BE SOLVED: To improve operation efficiency by reducing agitation resistance or the like caused by lubricating oil in each motion of a movable scroll or an Oldham coupling. SOLUTION: The Oldham coupling 26 preventing rotation of a revolving movable scroll 22 is provided. An inner and an outer circumference end parts of a ring 26a of the Oldham coupling 26 are formed in semi ellipse shapes. An outer circumference part 22e of an end plate 22a of the movable scroll 22 is formed in a tapered shape. Lubricating oil existing around the Oldham coupling or the like smoothly flows along the semi ellipse shape or the like in motion of the Oldham coupling 26 or the like. Consequently, agitation resistance or the like caused by lubricating oil is reduced and operation efficiency is improved. COPYRIGHT: (C)2005,JPO&NCIPI
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