| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrically driven device which enables common design of controllers for electric motors having different output.SOLUTION: A power module 40, a control board 30, and a heat sink 80 are provided at the axial one side of a shaft 35 of an electric motor composed of a motor case 11, a stator 15, a rotor 21, the shaft 35, and the like. The heat sink 80 includes a columnar body 84 located at the outer side of a center part and extending in an axial direction and a heat reception surface 85 located at the power module 40 side of the columnar body 84. This structure enables heat of the power module 40 to be efficiently transmitted to the heat sink 80. Further, the structure enables heat mass to be adjusted by extending an axial length of the columnar body 84, and thus an outer diameter of the motor is maintained at a small size. Furthermore, the structure does not change the design of the power module 40 and thus facilitates the adoption of common design of controllers for motors having different output. |
