SCROLL TYPE FLUID MACHINE

To suppress or prevent degradation of performance due to distortion of a bottom plate of a movable scroll.SOLUTION: In a scroll-type fluid machine 100, a driving mechanism 20 of a movable scroll 3 includes a crank shaft 21 having a driving shaft 21a and an eccentric shaft 21b eccentrically disposed on one end portion of the driving shaft 21a, a swivel bearing 22 fitted to the eccentric shaft 21b, an oscillation member 23 externally fitted to the swivel bearing 22, a thrust receiving portion 24 disposed between the movable scroll 3 and the oscillation member 23, and an auto-rotation prevention mechanism portion 25 of the movable scroll 3. The driving mechanism 20 has connection pins 25a penetrated through a plurality of through holes 24a penetrating through the thrust receiving portion 24, and connecting the oscillation member 23 and the movable scroll 3, and transmits revolution driving force to the movable scroll 3 through the connection pins 25a.SELECTED DRAWING: Figure 1 【課題】可動スクロールの底板の歪みに起因する性能低下の抑制又は防止を図る。【解決手段】スクロール型流体機械１００において、可動スクロール３の駆動機構２０は、駆動軸２１ａ及び駆動軸２１ａの一端部に偏心して設けられる偏心軸２１ｂを有するクランクシャフト２１と、偏心軸２１ｂと嵌合する旋回軸受２２と、旋回軸受２２に外嵌される揺動部材２３と、可動スクロール３と揺動部材２３との間に設けられるスラスト受け部２４と、可動スクロール３の自転阻止機構部２５と、を含む。駆動機構２０は、スラスト受け部２４を貫通する複数の貫通孔２４ａを貫通すると共に揺動部材２３と可動スクロール３との間を連結する連結ピン２５ａを有し、当該連結ピン２５ａを介して前記公転駆動力を可動スクロール３に伝達する。【選択図】図１