INTEGRATED ELECTRIC POWER STEERING APPARATUS

摘要

An electric motor section (40) a speed reduction mechanism section (20) and a controller section (50) are integrally fixed together. The controller section (50) has: a heat generating element (531) which includes at least a control circuit element and which generates heat by operating; a control board (53) having the heat generating element (531) mounted thereon; and a mechanism member (500) in which the control board (53) is fixed. The controller section (50) is configured such that at least a portion of the heat generated by the heat generating element (531) can be transmitted to the mechanism member (500) via a thermally conductive member (57).