PURPOSE: To omit a flange between both frames so as to attain compactness and light weight.
CONSTITUTION: A driving side frame 5 and a driven side frame 6 positioned on the respective back face sides of scrolls 3, 4 are fixed to a casing 2. A driving shaft 33 is inserted through an axial hole 51 bored in the driving side frame 5 to support the driving scroll 3 by the driving side frame 5. The driven side frame 6 is formed of a frame body 61 provided with a center opening 63 formed therein and fixed to the casing 2, and a supporting member 62 fixed to the center opening part 63 of the frame body 61 by bolts 67 to support the driven scroll 4. A driven shaft 43 is inserted through an axial hole 65 bored in the supporting member 62 to support the driven scroll 4 by the supporting member 62. In addition, the supporting member 62 is fixed by the bolts 67, being displaced in relation to the frame body 61 so as to make both scroll 3, 4 mutually eccentric.
UENO HIROMICHI
HAGIWARA SHIGEKI
