Patent ID: 8353692

Claim:
A scroll type compressor comprising: a housing having an end surface; a rotary shaft; a fixed scroll member including a fixed end plate and a fixed scroll wall formed on the fixed end plate and joined to the housing; a movable scroll member including a movable end plate and a movable scroll wall formed on the movable end plate; and a rotation preventing mechanism, wherein the movable scroll member is adapted to make an orbital motion in accordance with the rotation of the rotary shaft while being prevented from rotating on its axis by the rotation preventing mechanism whereby a compression chamber whose volume is variable is formed between the fixed scroll member and the movable scroll member, wherein the rotation preventing mechanism includes: a movable pin provided on the surface of the movable end plate that is opposite from the surface thereof where the movable scroll wall is formed, the movable pin extending toward the end surface of the housing in parallel with an axis of the rotary shaft; a fixed pin provided on the end surface of the housing, the fixed pin extending toward the surface of the movable end plate in parallel with an axis of the movable pin; a rolling element that is disposed between the movable and the fixed pins, being contactable with the movable and the fixed pins; and a retainer retaining the rolling element between the movable and the fixed pins.