| 摘要 |
PROBLEM TO BE SOLVED: To elongate the life by reducing the abnormal abrasion of a bearing such as a needle bearing used on a part rotatably supporting a boss part of a movable scroll member by an eccentric shaft part of a driving shaft in a scroll-type compressor. SOLUTION: As the boss part 10c of the movable scroll member 10 has a bottomed cup-shape, an internal space of the boss part 10c as a bearing box 22 accommodating the needle bearing 11 is formed as a dead-end street, which prevents the flow of a lubricant flowing through the needle bearing 11. A radial communication passage 25 is formed on an end plate part 10a of the movable scroll member, and a bottom part of the bearing box 22 is directly communicated to an suction chamber 14, whereby the lubricant and the compressed fluid such as a refrigerant, flow through the needle bearing 11, and as a result, the retention of the lubricant on the bottom part can be prevented. COPYRIGHT: (C)2004,JPO
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