Hitachi Automotive Systems, Ltd.

Hideaki Mori

Yutaka Matsunobu

Satoshi Yamamura

Shuichi Terakado

A gear-integrated electric motor is provided with a motor () generating a driving force by input of electricity, a gear mechanism () converting the driving force of the motor, and a housing () containing the motor and the gear mechanism, and used in a horizontal position in which a motor shaft () and a gear output shaft () become substantially horizontal. The gear-integrated electric motor includes at least one heat pipe () which has an evaporation portion () disposed in a motor area of the housing, and a condensation portion () disposed in a gear mechanism area of the housing and higher than the evaporation portion with respect to the vertical direction in the horizontal position.

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Kasumigaura, Japan

Hideaki Mori