| 摘要 |
PROBLEM TO BE SOLVED: To reduce a weight and a cost of manufacture of a motor-driven compressor by effectively balancing the rotation of a rotor.SOLUTION: An electric motor 140 has a stator 160 fixed to a housing 110, and a rotor 150 fixed to a main shaft 164. The rotor 150 includes a rotor core, a plurality of magnets buried in the rotor core, and a plurality of balance weights provided on the rotor core. The rotor core is provided with a first hole part into which a rotation shaft is inserted, a plurality of second hole parts into which the magnets are inserted, and a plurality of third hole parts into which the balance weights are inserted. At least a part of a first balance weight arranged at a compression mechanism 130 side in a rotational axis direction of the rotor core is inserted into the third hole part. A journal member 170 is arranged so that at least a part of the journal member 170 is opposed to an inner periphery of a first coil end 162e1 and to the first balance weight arranged at the compression mechanism 130 side.SELECTED DRAWING: Figure 1 |
