| 摘要 |
PROBLEM TO BE SOLVED: To improve the lubricating state of lug parts to be close to a fluid lubricating state for reducing the abrasion loss by forming a working mark approximately in parallel with the sliding direction on a sliding surface of the lug parts of an Oldham's coupling. SOLUTION: A compressing mechanism comprises an Oldham's coupling for preventing the self-rotation of a swirl vane forming a plurality of compressing work spaces by engaged with a fixed swirl vane, and permitting only its turning. In the operation of a compressing mechanism, when a crankshaft is driven, the lug parts 40, 41 of the Oldham's coupling and the key ways are relatively reciprocated with the eccentric quantity of an eccentric bearing. The Oldham's coupling is formed with a ring part, a pair of two lugs 40 mounted on its upper surface, and a pair of two lugs 41 mounted on its lower surface, and the lugs 40, 41 of each pair are respectively mounted on a straight moving line. The working mark 61 of each pair of lugs 40, 41 is formed approximately in parallel with the sliding direction in the operation of a scroll fluid machine.
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