Electric pump

Abstract

An electric pump includes a motor, a bracket including a support surface arranged to be perpendicular to a rotation shaft of the motor and a bush attachment bore provided to be perpendicular to the support surface, and a bush fitted to the bush attachment bore. The bush attachment bore includes a base portion formed in a shape similar to a portion of the bush fitted to the bush attachment bore, the bush attachment bore including an expansion portion integrally formed with the base portion and extending in a circumferential direction of the motor.

1 . An electric pump comprising:
 a motor;   a bracket including a support surface arranged to be perpendicular to a rotation shaft of the motor and a bush attachment bore provided to be perpendicular to the support surface; and   a bush fitted to the bush attachment bore, wherein   the bush attachment bore includes a base portion formed in a shape similar to a portion of the bush fitted to the bush attachment bore, the bush attachment bore including an expansion portion integrally formed with the base portion and extending in a circumferential direction of the motor.   
     
     
         2 . The electric pump according to  claim 1 , wherein the expansion portion includes a width in a radial direction of the motor, the width gradually decreasing in a direction away from the base portion. 
     
     
         3 . The electric pump according to  claim 1 , wherein the expansion portion is formed at each of both sides of the base portion in the circumferential direction of the motor. 
     
     
         4 . The electric pump according to  claim 1 , wherein the base portion includes a circular form and the expansion portion includes a furthest point on an outer edge from a center of the base portion, the furthest point being positioned on a circumference of a circle of which a center corresponds to the rotation shaft of the motor and a radius corresponds to a distance from the rotation shaft to the center of the base portion.