Electric power steering apparatus

摘要

An electric power steering apparatus (100) for assisting steering of a steered wheel. The electric power steering apparatus (100) includes an electric motor (20) with a built-in controller (21) for controlling rotation, a transmission mechanism (30) for transmitting the rotation of the electric motor (20) to the steering shaft, a connector (25) used to pull out wiring from the controller (21) to the outside, a first casing (40) in which the connector (25) and the electric motor (20) are to be mounted and which includes an work hole (41) used for a wire connection operation of the controller (21) and the connector (25), a lid member (45) for closing the work hole (41), and a second casing (50) to be fixed to the first casing (40) while housing the transmission mechanism (30) . The second casing (50) including a cover part (55) for covering the lid member (45) in a state fixed to the first casing (40) .