Fuel pump

Abstract

A fuel pump includes a pump part, a motor part, a motor casing, a motor cover, a terminal, and an electric connector part. The terminal is electrically connectable to an external connector for electricity supply. The electric connector part is disposed at an end portion of the motor cover located on the opposite side from a fitted end of the motor cover which is fitted with a housing, and includes a side surface which is slidably in contact with the external connector to determine a fitting position of the electric connector part relative to the external connector, a bottom face from which the terminal rises up, and an opening which is formed on the side surface to communicate between inside and outside of the electric connector part. The bottom face is an inclined surface whose height becomes lower in a direction from generally a center of the motor cover toward the opening.

What is claimed is: 
     
         1 . A fuel pump comprising:
 a pump part that includes a rotation member configured to suction and pressurize fuel;   a motor part that includes:
 a rotor coupled with a rotating shaft of the rotation member to be capable of rotating the rotation member; 
 a commutator rotated together with the rotor to rectify an electric current supplied to the rotor; and 
 a housing accommodating the rotor and the commutator; 
   a motor casing that supports one end of the rotating shaft of the rotation member;   a motor cover that is disposed at one end of the motor part in an axial direction thereof and is fitted together with the housing so as to fix the motor casing;   a terminal that is disposed at an end portion of the motor cover located on an opposite side from a fitted end of the motor cover, which is fitted with the housing, the terminal being electrically connectable to an external connector for electricity supply; and   an electric connector part that is disposed at the end portion of the motor cover located on the opposite side from the fitted end of the motor cover and that includes:
 a side surface which is slidably in contact with the external connector to determine a fitting position of the electric connector part relative to the external connector; 
 a bottom face from which the terminal rises up; and 
 an opening which is formed on the side surface to communicate between inside and outside of the electric connector part, wherein the bottom face is an inclined surface whose height becomes lower in a direction from generally a center of the motor cover toward the opening. 
   
     
     
         2 . The fuel pump according to  claim 1 , wherein a gradient ratio of an inclination of the inclined surface changes within the inclined surface. 
     
     
         3 . The fuel pump according to  claim 1 , wherein the bottom face includes a groove in the direction from generally the center of the motor cover toward the opening, the groove connecting to the opening. 
     
     
         4 . The fuel pump according to  claim 3 , wherein a height of a recessed ridgeline of the groove becomes lower in the direction from generally the center of the motor cover toward the opening. 
     
     
         5 . A fuel pump comprising:
 a pump part that includes a rotation member configured to suction and pressurize fuel;   a motor part that includes:
 a rotor coupled with a rotating shaft of the rotation member to be capable of rotating the rotation member; 
 a commutator rotated together with the rotor to rectify an electric current supplied to the rotor; and 
 a housing accommodating the rotor and the commutator; 
   a motor casing that supports one end of the rotating shaft of the rotation member;   a motor cover that is disposed at one end of the motor part in an axial direction thereof and is fitted together with the housing so as to fix the motor casing;   a terminal that is disposed at an end portion of the motor cover located on an opposite side from a fitted end of the motor cover, which is fitted with the housing, the terminal being electrically connectable to an external connector for electricity supply; and   an electric connector part that is disposed at the end portion of the motor cover located on the opposite side from the fitted end of the motor cover and that includes:
 a side surface which is slidly in contact with the external connector to determine a fitting position of the electric connector part relative to the external connector; 
 a bottom face from which the terminal rises up; and 
 an opening which is formed on the side surface to communicate between inside and outside of the electric connector part, wherein the bottom face includes a groove in a direction from generally a center of the motor cover toward the opening, the groove connecting to the opening. 
   
     
     
         6 . The fuel pump according to  claim 5 , wherein a height of a recessed ridgeline of the groove becomes lower in the direction from generally the center of the motor cover toward the opening.