Patent ID: 7275791

Claim:
A seat drive motor comprising: a bracket; a housing that is held by the bracket and receives a rotatable member and a linearly movable member; and a motor unit that drives the rotatable member, wherein: the linearly movable member is driven linearly through the rotatable member upon rotation of the motor unit; one end of the housing contacts the bracket; the housing includes: a rotatable member support portion that supports an axial force of the rotatable member, which is exerted in an axial direction of the rotatable member upon rotation of the rotatable member; and at least one rib that is arranged radially inward of a peripheral wall of the one end of the housing and at least partially overlaps with the rotatable member support portion in the axial direction of the rotatable member; the at least one rib contacts the bracket and supports the rotatable member support portion relative to the bracket in the axial direction of the rotatable member when the axial force of the rotatable member is applied to the at least one rib; each rib of the housing has a bracket side end surface, which contacts the bracket in the axial direction of the rotatable member; the peripheral wall of the housing has a bracket side end surface, which contacts the bracket in the axial direction of the rotatable member; and the bracket side end surface of each rib of the housing and the bracket side end surface of the peripheral wall of the housing are located in a common plane that extends perpendicular to the axial direction of the rotatable member.