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US 11,381,137 B2Granted
Electric motor, compressor, air conditioner, and method for manufacturing electric motor
AssigneeMitsubishi Electric Corporation
InventorsRyogo Takahashi, Hiroki Aso, Takanori Watanabe, Takaya Shimokawa
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Abstract
An electric motor includes a stator assembly, a rotor provided inside the stator assembly, and a heat sink to radiate heat from the stator assembly. The heat sink includes a base portion, and a heat radiating portion formed integrally with the base portion.
Claims16
An electric motor comprising:
- a stator assembly including a resin and a stator;
- a rotor provided inside the stator assembly;
- and
- a heat sink fixed to the stator assembly and to radiate heat from the stator assembly, the heat sink including:
- a base portion fitting into the resin;
- and
- a heat radiating portion formed integrally with the base portion,
- wherein the resin is formed by
- placing the stator and the heat sink in a first mold of a mold, and
- combining a second mold of the mold with the first mold so that an inner surface of the second mold comes into contact with the base portion of the heat sink, and injecting the resin into the mold so that the base portion fits into the resin.
7 more elements
A method for manufacturing an electric motor including a rotor, a stator, and a heat sink having a base portion and a heat radiating portion formed inside the base portion in a radial direction, the method comprising:
- manufacturing the stator;
- placing the stator and the heat sink in a first mold of a mold;
- combining a second mold of the mold with the first mold so that an inner surface of the second mold comes into contact with the base portion of the heat sink;
- injecting resin into the mold so that the base portion fits into the resin;
- and
- inserting the rotor inside the stator.
3 more elements
Dependencies are inferred from the claim text.