| 摘要 |
PROBLEM TO BE SOLVED: To provide a scroll fluid machine of synchronous rotation type involving no obstacle for rotation of a scroll caused by abutting to the bearing of a crank pin, having no risk of breakage of the bearing because a crank pin is free of sideways deflection, and assuring a long lifetime and a high reliability. SOLUTION: The crank pin 17 is to couple together the peripheries of a driving scroll 11 and a following scroll 12, and the two ends of the crank pin 17 are supported rotatably on the scrolls 11 and 12 through radial ball bearings 18 and 19. The radial ball bearings 18 and 19 on the driving scroll side and following scroll side are two pieces each installed at certain spacings in the center line direction of the crank pin 17.
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