PROBLEM TO BE SOLVED: To provide a new electric driving device and electric power steering device which inhibit a power supply circuit part and a power conversion circuit unit from being enlarged in a radial direction and which is equipped with a heat dissipation structure having a simple configuration by reducing the number of components as much as possible.SOLUTION: A metallic heat dissipation base body in thermal contact with the inner periphery of an ECU housing is arranged in a housing space between the ECU housing and a motor housing, and a metal substrate of a circuit part for controlling an electric motor is pressed and fixed to the heat dissipation base body by a connector terminal connected to a connector arranged on the metal substrate of the circuit part for controlling the electric motor. Since a fixing screw fixing the metal substrate to the heat dissipation base body can be eliminated, an area of the metal substrate can be reduced by an amount of the fixing screw fixing the metal substrate to the heat dissipation base body, and the circuit part for controlling the electric motor can be miniaturized.SELECTED DRAWING: Figure 3
【課題】電源回路部や電力変換回路部が半径方向に大型化するのを抑制すると共に、できるだけ部品点数を少なくして構成が簡単な放熱構造を備える新規な電動駆動装置及び電動パワーステアリング装置を提供することにある。【解決手段】ECUハウジングの内周と熱的に接触する金属製の放熱基体をECUハウジングとモータハウジングの収納空間内に配置し、電動モータを制御する回路部の金属基板上に配置されたコネクタに接続されるコネクタ端子によって、電動モータを制御する回路部の金属基板を放熱基体に押し付けて固定する構成とした。金属基板を放熱基体に固定する固定ねじを省略できるので、金属基板を放熱基体に固定する固定ねじの分だけ金属基板の面積を小さくでき、電動モータを制御する回路部を小型化することができる。【選択図】図3
ELECTRIC DRIVING DEVICE AND ELECTRIC POWER STEERING DEVICE
電動駆動装置及び電動パワーステアリング装置
12.08.2016
Patent
Elektronische Ressource
Japanisch
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