Scroll-type compressor having radial scroll clearance during reverse rotation and improper assembly prevention

A scroll-type compressor comprising:

• a stationary scroll and an orbiting scroll, each of said stationary scroll and said orbiting scroll having base plates from which scroll portions project;
• a compression chamber defined between said stationary scroll and said orbiting scroll when said stationary scroll and said orbiting scroll are combined in an eccentric:
• position shifted in phase by 180.degree.;
• an orbiting bearing disposed on said orbiting scroll on a side of said orbiting scroll which is opposite to said compression chamber;
• a main shaft for transmitting a drive force to the orbiting scroll;
• a slider mounting shaft mounted at one end of said main shaft and having a first flat surface and a second flat surface;
• a slider fitted on said orbiting bearing and including a slider fitting hole having a first sliding surface and a second sliding surface for receiving said slider mounting shaft therein, said slider being non-rotatable and slidable relative to said slider mounting shaft in a plane perpendicular to an axis of said main shaft;
• and
• means for defining a clearance between said second flat surface of said slider mounting shaft and said second sliding surface of said slider upon a forward rotation of said main shaft, said clearance allowing, upon a reverse rotation of said main shaft, said second flat surface of said slider mounting shaft and said second sliding surface of said slider to be brought into contact with each other, and said clearance allowing said slider to shift in a direction in which an amount of eccentricity of said orbiting scroll decreases to generate a radial clearance between said stationary scroll and said orbiting scroll.