| 摘要 |
A small rotor (7) integrated with a main shaft (6) is eccentrically disposed in a large rotor (8) composed of an annular tube for holding a bearing in a bearing housing (9); paired slide grooves (12, 13) having prescribed relative orientations and inclinations are carved at equidistant portions opposite to the large rotor (8) and the small rotor (7); each of bent vanes (14) with a prescribed bending angle is fitted to and bridges between each pair of slide grooves (12, 13); and an inlet (16) and outlet (17) are disposed in prescribed positions on a side housing (10). This construction provides a solution to the problem of simultaneously achieving mutually contradictory functions of ensuring smooth rotational sliding motion and airtightness under secured sealing, while involving abrasion of the tips of vanes and the difficulty in ensuring the proper pressing mechanism for the vanes in the conventional vane rotary mechanism in which a chamber, gradually changing its volume, has to be partitioned by pressing the vanes against a cam ring.
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