PURPOSE: To reduce the distance between the gas load exerting point of a driving scroll and a driven scroll and the center of the bearing to improve the stability of the scroll, and provide the uniform supply of the oil to the bearing with a simple oil-supplying structure.
CONSTITUTION: At least either of a driving shaft 8 and a driven shaft 5 is made cylindrical, and a bearing 9 or a bearing 6 is provided on the inner circumferential surface of this cylindrical shaft. A fixed shaft 28 is provided on at least either of a driving side bearing housing 10 to support the cylindrical shaft and a driven side bearing housing 7, and the cylindrical shaft is rotatably supported by the fixed shaft 28 through the bearing 9 or 6, and at least one of the driving shaft 8 and the driven shaft 5 is supported by the rotatable bearing structure.
UEISHIDA KOKI
SHIBAMOTO YOSHITAKA
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