| 摘要 |
Disclosed is an actuator, comprising a casing prepared by integrally bonding a first case member and a second case member which are separated from each other in an axial direction of the casing, bracket holding portions formed to provide a pair on the inner surfaces of the first and second case members, a motor having a mounting bracket and housed in the casing with the mounting bracket held by the bracket holding portions, a worm gear mounted to a rotary shaft of the motor, and an operating section including a worm wheel which is rotated in mesh with the worm gear so as to impart a predetermined driving force to an adjustment section of an apparatus to be controlled, wherein the bracket holding portion of the first case member includes a groove formed along an inner peripheral portion of the holding portion for receiving one peripheral portion of the mounting bracket of the motor, and the bracket holding portion of the second case member includes a pushing portion formed along an inner peripheral portion of the holding portion for pushing the other peripheral portion of the mounting bracket of the motor.
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