A goal of the present invention is to realize a relative revolving movement between a drive scroll and a driven scroll without a sliding element configuration such as used in conventional Oldham's coupling mechanisms and/or pin-crank mechanisms. To achieve the goal of the present invention, a configuration of the invention comprises: a stationary scroll (a second scroll) 58 fixed to a scroll casing 60, an orbiting scroll (a first scroll) 52 that engages with the stationary scroll so as to form a closed compression chamber 59, an intermediate ring (intermediate element) 110 that is placed so as to surround an orbiting scroll lap 54, a plurality of first plate sprigs 112 a and 112 b that connects the intermediate ring 110 and the orbiting scroll 52, while supporting the intermediate ring 110 so as to enable the intermediate ring 110 to move in a first direction orthogonal to a rotation axis, and a plurality of second plate sprigs 112 c and 112 d that connects the intermediate ring and the stationary scroll 58, while supporting the intermediate ring 110 so as to enable the intermediate ring 110 to move in a second direction orthogonal to the rotation axis as well as orthogonal to the first direction.