| 摘要 |
PURPOSE:To reduce friction loss at the sliding part in such a way that in the captioned gear to be used for air conditioner's compressor or another, a sliding part of an Oldham's ring is made into a rolling system in order to smooth reciprocating movement of the Oldham's ring. CONSTITUTION:An Oldham's member 15 is formed its inner circumference into an elliptical shape. Then, a groove 15a is provided at the position opposite to the long diametral direction, revolution is given to a roller bearing 16 which is pressed into a pin 17 tightly fixed at the position facing to another on the lower side of a turning scroll 2 in the groove 15a, boss parts 15b are formed in the outer diametral direction around the outer periphery of the oldham's member 15 which is orthogonally crossed with it, and notches 15c are provided in parallel with the side of the member 15 at the tips of the boss parts 15b. Another roller bearing 18 is provided in the notches 15c, the bearing 18 is engaged to be freely turned by a pin 19. And, the bearing 18 which has been installed in the boss parts 15b is inserted into a groove 3b of a frame 3 to be freely slid. |
