| 摘要 |
A scroll fluid machine is provided to fix a holding plate to a holder more firmly by arranging a plurality of ears on a straight line between centers of an orbiting scroll and the holder, and to reduce a diameter of the orbiting scroll and make a housing small by preventing the ears from being protruded from an outer circumference of the orbiting scroll. A scroll fluid machine comprises a housing(1), a driving shaft(4), a fixed scroll(33), an orbiting scroll(5) and a self-rotation-preventing device(9). The driving shaft has an eccentric axial portion. The fixed scroll is fixed to the housing. The orbiting scroll is rotatably secured around the eccentric axial portion of the driving shaft, the orbiting scroll engaging with the fixed scroll to form a compression chamber between the fixed and orbiting scrolls. The self-rotation-preventing device allows the orbiting scroll to revolve while the device prevents the orbiting scroll to rotate on its own axis, the self-rotation-preventing device comprising a pair of holders(82) one of which is fixed in the housing.
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