| 摘要 |
<p>An electrical power steering system (100) is configured to assist steering by transmitting, through a belt, a rotational force of a driving pulley coaxially coupled to a rotational shaft (21) of an electrical motor to a driven pulley coaxially coupled to a rotational member of a steering apparatus. The electrical power steering system (100) includes a belt tension adjustment mechanism (A) for adjusting a tension of the belt. The belt tension adjustment mechanism (A) includes: a guide surface (14a) and an engagement surface (22a), which are formed as mating surfaces of a housing (14) of the steering apparatus and a casing (22) of the electrical motor so as to engage with each other; and a connector (40) capable of relatively moving the engagement surface (22a) along the guide surface (14a) due to a connection force for connecting the housing (14) and the casing (22) under a state in which the guide surface (14a) and the engagement surface (22a) engage with each other. The guide surface (14a) is inclined by a predetermined amount (¸) with respect to an axial line direction of the rotational shaft (21).</p> |
