To supply lubricating oil to respective parts of a compressor and to prevent occurrence of abnormal abrasion and noises generated during operation by disposing a lubricating oil valve means in an oil chamber so as to be selectively close a cooling lubricating oil introducing pipe.

An elastic means 86 fixed to one end of a vane member 72 is contracted or expanded due to rotation of a roller member 54 in a cylinder member 70. Capacity in an oil chamber 60 is increased or decreased to vary pressure. When the vane member 72 is moved from a lower portion to an upper portion, the capacity of the oil chamber 60 is increased, while the pressure is decreased. The lubricating oil suctioned through a cooling lubricating oil introducing pipe 62 flows into the low pressure oil chamber 60 through the cooling lubricating oil introducing pipe 62 while pushing up a valve means for the lubricating oil. It is thus possible to prevent contraflow of the oil flowing into the oil chamber 60, and to sufficiently supply the oil to an outer peripheral surface of a crankshaft 52.