PURPOSE: To reduce a sliding loss and so on by installing a piston in the reciprocation direction of an Oldham's ring projectingly, while constituting a lubrication pump after forming a cylinder in a frame being opposed to this piston.
CONSTITUTION: When a main shaft 3 is rotated by an electric motor 15, it is regulated by an Oldham's ring 7, and a turning scroll 4 performs its turning motion, with no rotation, to a fixed scroll 5. If so, this Oldham's ring 7 reciprocates in the vertical direction. Consequently, a piston 8 reciprocates in a cylinder space 10, sucking oil from a small hole 14 of a feed oil pipe 13, and thus lubrication takes place for each part through a main shaft oil groove 11 and a crankshaft oil groove 12. With this constitution, in a lubrication pump, the piston 8 is solidly formed in the Oldham's ring 7, thereby utilizing reciprocating motion of this Oldham's ring 7, so that a sliding loss is decreased and pump performance is thus improvable and, what is more, a structure is simplifiable.
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HAYANO MAKOTO
HATTORI HITOSHI
MOROZUMI NAOYA
OKUDA MASAYUKI
