| 摘要 |
PROBLEM TO BE SOLVED: To insure lubricating oil in the sliding parts of an Oldham's coupling by providing communication holes between the respective slide faces on the load side and the antiload side, on the keys engaging with the back face and the frame side of the turning scroll of an Oldham's ring. SOLUTION: Two keys 15a are provided in the direction of 180 deg. on the turning scroll side, and two keys 15b are provided similarly in the direction of 180 deg. on the frame side so as to be deviated positions from the keys 15a by 90 deg.. In the perpendicular directions to the respective sliding directions X, Y of the respective keys 15a, 15b, communication holes 21 communicating the load side slide faces F and the antiload side slide faces are provided. Thus, lubricating oil enclosed in the communication holes 21 hardly leaks outward, because the gap between between a key groove 11a and the key 15b is very narrow so as to be several tensμm and viscous resistance exists in oil. Consequently, abnormal abrasion due to the shortage of oil can be prevented from generating in restarting the compressor, and compression performance and reliability for sliding can be insured.
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