To provide an electric driving device capable of improving efficiency of assembly work, suppressing heat concentration of a power substrate, and enhancing heat radiation efficiency of the power substrate, and an electric power steering device.SOLUTION: The electric driving device is so configured that a first power substrate, a second power substrate, and a control substrate are assembled to a heat sink so that the first power substrate, the second power substrate, and the control substrate are disposed around the axial extension of a shaft. Then, a sensor substrate is assembled to the heat sink so that the sensor substrate is sandwiched by the first power substrate, the second power substrate and the control substrate, and an electric motor in the axial direction. Further, an electronic component mounted on the back surface of a first mounting surface is inserted into a first recess provided in the heat sink. An electronic component mounted on the back surface of a second mounting surface is inserted into a second recess provided in the heat sink.SELECTED DRAWING: Figure 9
【課題】組み立て作業の効率が向上し、パワー基板の熱集中が抑制され、かつパワー基板の放熱効率を高めることのできる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。【解決手段】電動駆動装置において、第1パワー基板、第2パワー基板及び制御基板がシャフトの軸方向の延長線の周りに配置されるように、第1パワー基板、第2パワー基板及び制御基板がヒートシンクに組み付けられる。そして、第1パワー基板、第2パワー基板及び制御基板と、電動モータとは軸方向においてセンサ基板を挟むように、センサ基板がヒートシンクに組み付けられる。また、第1実装面の裏面に実装された電子部品が、ヒートシンクに設けられた第1凹部に挿入され、第2実装面の裏面に実装された電子部品が、ヒートシンクに設けられた第2凹部に挿入される。【選択図】図9
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
2019-01-10
Patent
Elektronische Ressource
Japanisch
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