| 摘要 |
PURPOSE:To improve lubricating performance by constituting a supply oil passage, to a thrust bearing between a swivel scroll and a bearing retainer, of a passage, which provides its terminal end part in a plane of the thrust bearing, and opening one part of this passage to a position communicating with the inside of a guide groove of the swivel scroll. CONSTITUTION:A swivel shaft 11 of a swivel scroll 7 is fitted into an eccentric hole 6 in the upper end of a main shaft 4 turned by a motor part M, and the main shaft 4 is supported to upper part bearing retainers 14, 15 through main bearings 16, 17. Setting a thrust bearing 18, which supports the swivel scroll 7, on the upper part bearing retainer 14, in the periphery of this bearing 18, a compressor arranges an Oldham's coupling 19 which performs a swivel motion of the swivel scroll 7 preventing it from rotating on its own axis. Here the compressor forms guide grooves 61, 62, which exist extending in a direction at a right angle with both guide grooves (not shown) of the upper part bearing retainer 14, in the back surface side of an end plate 7a of the swivel scroll 7. While the compressor forms many supply oil passages 63, providing one part such as communicating intermittently with the inside of the guide grooves 61, 62, in the thrust bearing 18. |
