| 摘要 |
<p>In a power transmission mechanism a hub (2) is fixed with a ring-like rubber piece (4) at one side face (4a) thereof. An end portion of a shaft (1) is fitted with a shaft boss (5) of the hub (2) and a nut (6) to pinch to hold a shim (7). At this instance, other side face (4b) of the rubber piece is brought into contact with a pulley (3). When the nut (6) is fastened, the rubber piece (4) is compressed and the other side face (4b) thereof is brought into press contact with the pulley (3). In normally operating a compressor, power is transmitted from the pulley (3) to the shaft (1) via the rubber piece (4) and the hub (2). At overload, slip is caused between the other side face (4b) of the rubber piece (4) and the pulley (3) and power transmission is cut. The overload limit can be adjusted by selecting the thickness of the shim (7). <IMAGE></p> |
