Electric motor
First Claim
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1. An electric motor comprising:
- a stator with a plurality of coils wound around a ring-shaped iron core; and
a rotor rotatably disposed inside the stator;
the rotor comprising;
a rotor shaft;
a yoke integrally mounted on the rotor shaft;
a plurality of magnet holes formed at equal pitches near a periphery of the yoke; and
a plurality of plate-like permanent magnets disposed in the magnet holes, respectively;
wherein the yoke has a plurality of air holes, provided between the rotor shaft and the permanent magnets, for accelerating heat release of the rotor.
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Abstract
An electric motor including a stator with a plurality of coils wound around a ring-shaped iron core, and a rotor rotatably disposed inside the stator is provided. The rotor includes a rotor shaft and a yoke. The yoke is provided near its periphery with a plurality of plate-like permanent magnets arranged at equal pitches. Heat generated from the rotor is released through a plurality of air holes formed in the yoke between the rotor shaft and the permanent magnets.
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Citations
2 Claims
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1. An electric motor comprising:
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a stator with a plurality of coils wound around a ring-shaped iron core; and
a rotor rotatably disposed inside the stator;
the rotor comprising;
a rotor shaft;
a yoke integrally mounted on the rotor shaft;
a plurality of magnet holes formed at equal pitches near a periphery of the yoke; and
a plurality of plate-like permanent magnets disposed in the magnet holes, respectively;
wherein the yoke has a plurality of air holes, provided between the rotor shaft and the permanent magnets, for accelerating heat release of the rotor. - View Dependent Claims (2)
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Specification