A brushless wiper motor (20; 70), comprising: a housing rotatably supporting an output shaft, and being integrally provided with a motor housing unit; a stator housed in the motor housing unit; a rotor disposed inside the stator, the rotor rotating the output shaft; a recess formed on the outer periphery of the stator, recessed toward the inner periphery of the stator, wherein the recess is substantially U-shaped in its sectional shape in a direction intersecting with the axis of the stator and having a pair of a first wall and a second wall, a pressing claw formed on an outer periphery of the stator, the pressing claw being pressed against an inner periphery of the motor housing unit to fix the stator to the motor housing unit, wherein a base end portion of the pressing claw is connected to the outer periphery of the stator, a tip end portion of the pressing claw serves as a free end and is directed in a circumferential direction of the stator, wherein the pressing claw is arranged on the stator in such a way that the tip end portion of the pressing claw is pressed against the inner periphery of the motor housing unit when the stator is press-fitted in the motor housing unit, characterized in that: a depression is provided on the base end portion of the pressing claw, the depression being depressed toward the inner periphery of the stator to reduce rigidity of the base end portion of the pressing claw by reducing a width of the base end portion of the pressing claw; a press-fitting projection is provided on the tip end portion of the pressing claw. the press-fitting projection projecting toward the outside of the stator in a radial direction of the stator to be press-fitted in the motor housing unit; and straight line parts are provided at both sides of the press-fitting projection in a longitudinal direction of the pressing claw, each of the straight line parts forming a gap between each of the straight line parts and an inner wall of the motor housing unit. a housing rotatably supporting an output shaft, and being integrally provided with a motor housing unit; a stator housed in the motor housing unit; a rotor disposed inside the stator, the rotor rotating the output shaft; a recess formed on the outer periphery of the stator, recessed toward the inner periphery of the stator, wherein the recess is substantially U-shaped in its sectional shape in a direction intersecting with the axis of the stator and having a pair of a first wall and a second wall, a pressing claw formed on an outer periphery of the stator, the pressing claw being pressed against an inner periphery of the motor housing unit to fix the stator to the motor housing unit, wherein a base end portion of the pressing claw is connected to the outer periphery of the stator, a tip end portion of the pressing claw serves as a free end and is directed in a circumferential direction of the stator, wherein the pressing claw is arranged on the stator in such a way that the tip end portion of the pressing claw is pressed against the inner periphery of the motor housing unit when the stator is press-fitted in the motor housing unit, characterized in that: a depression is provided on the base end portion of the pressing claw, the depression being depressed toward the inner periphery of the stator to reduce rigidity of the base end portion of the pressing claw by reducing a width of the base end portion of the pressing claw; a press-fitting projection is provided on the tip end portion of the pressing claw. the press-fitting projection projecting toward the outside of the stator in a radial direction of the stator to be press-fitted in the motor housing unit; and straight line parts are provided at both sides of the press-fitting projection in a longitudinal direction of the pressing claw, each of the straight line parts forming a gap between each of the straight line parts and an inner wall of the motor housing unit. a press-fitting projection is provided on the tip end portion of the pressing claw. the press-fitting projection projecting toward the outside of the stator in a radial direction of the stator to be press-fitted in the motor housing unit; and straight line parts are provided at both sides of the press-fitting projection in a longitudinal direction of the pressing claw, each of the straight line parts forming a gap between each of the straight line parts and an inner wall of the motor housing unit.