Patent ID: 8303280

Claim:
A scroll type compressor comprising: a fixed scroll; a movable scroll having a mirror plate and a lap that is provided to the mirror plate and engaged with the fixed scroll; and an Oldham's ring that is disposed on a back side of the movable scroll and constrains rotation of the movable scroll on an axis thereof, wherein: the Oldham's ring has a pair of fixing locking pawls extending toward the fixed scroll and configured to fix the movable scroll from a back side of the movable scroll by being fitted to the fixed scroll, and a pair of projecting portions for constraining the rotation of the movable scroll, each of the fixing locking pawls is provided with a reinforcing portion at a base portion thereof, the mirror plate of the movable scroll is cut out in a concave shape at an edge portion thereof in conformity with a movement range of the reinforcing portion to form a air of concaved escape portions at the edge portion of the mirror plate, the mirror plate is provided with a pair of guide grooves to which the pair of projecting portions are respectively fitted, and the pair of concaved escape portions and the pair of guide grooves are provided so that three points displaced in phase by 120° are all disposed on the edge portion of the mirror plate except for the pair of concaved escape portions and the pair of guide grooves.