| 摘要 |
A compressor having drive assembly including a crankshaft and a motor having a stator and a rotor. The rotor is received on a crankshaft and secured to the crankshaft via a counterweight. In one exemplary embodiment, the counterweight is shrink-fit or press-fit in position on the crankshaft and the rotor is attached to the counterweight. In one exemplary embodiment, the rotor may be secured to the counterweight by fasteners, such as bolts. The interference between the counterweight and the crankshaft is sufficiently strong to transfer driving loads from the rotor and through the counterweight to drive the crankshaft. In one exemplary embodiment, the rotor includes a central opening having a diameter larger than the diameter of the crankshaft. This allows for the rotor to fit closely to the crankshaft without touching the same. As a result, the rotor may be easily assembled as a slip-fit on the crankshafts and then secured to the counterweights.
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