Patent ID: 7235908

Claim:
A motor actuator comprising: a motor that includes: a motor housing; and a rotor that is rotatably received in the motor housing; and a casing that receives the motor and has at least one holding portion, wherein the at least one holding portion holds the motor in a manner that limits turning of the motor housing around a rotational axis of the motor while permitting movement of the motor housing in a predetermined direction, which is perpendicular to the rotational axis of the motor, wherein the casing includes a first casing part and a second casing part, which are connected to one another; an outer end surface of the motor housing has a first engaging portion; the at least one holding portion has a second engaging portion, which is engaged with the first engaging portion in a manner that limits the turning of the motor housing around the rotational axis of the motor while permitting the movement of the motor housing in the predetermined direction, which is perpendicular to the rotational axis of the motor; and the second engaging portion extends in the predetermined direction, which is generally parallel to an installation direction of the second casing part relative to the first casing part, to guide the first engaging portion in the predetermined direction at a time of installing the motor housing to the casing.