Electric pump

Abstract

An electric pump includes: a pump unit; a motor unit configured to drive the pump unit; a control unit configured to control driving of the motor unit; and a resin-made housing configured to accommodate the control unit, in which the housing has a housing main body and a cover body, the cover body includes, on an inner surface side thereof, a metal portion which entirely covers at least one surface portion of a control board configuring the control unit, and the metal portion is configured to be groundable.

What is claimed is: 
     
         1 . An electric pump comprising:
 a pump unit;   a motor unit configured to drive the pump unit;   a control unit configured to control driving of the motor unit; and   a resin-made housing configured to accommodate the control unit,   wherein the housing has a housing main body and a cover body,   the cover body includes, on an inner surface side thereof, a metal portion which entirely covers at least one surface portion of a control board configuring the control unit, and   the metal portion is configured to be groundable.   
     
     
         2 . The electric pump according to  claim 1 ,
 wherein the metal portion has a top surface portion which covers the one surface portion of the control board, and a tubular portion which is erected on a side of the control board from a peripheral edge of the top surface portion, and   the tubular portion entirely covers a side portion of the control board.   
     
     
         3 . The electric pump according to  claim 2 ,
 wherein the motor unit includes an annular stator and an extension member extending from the stator toward the control board and electrically connected to the stator, and   an end portion of the tubular portion and an end portion of the extension member overlap with each other when viewed in a radial direction of the tubular portion.   
     
     
         4 . The electric pump according to  claim 3 ,
 wherein at least one of the end portion of the tubular portion and the end portion of the extension member has an elastic portion which is elastically deformable, and the elastic portion is elastically deformed so that the end portion of the tubular portion and the end portion of the extension member are electrically connected to each other.   
     
     
         5 . The electric pump according to  claim 1 , further comprising:
 a first connection member that electrically connects the metal portion and a ground pattern of the control board to each other,   wherein the motor unit includes an annular stator and a second connection member which electrically connects the stator and the ground pattern of the control board to each other, and   the stator is configured to be groundable.   
     
     
         6 . The electric pump according to  claim 2 , further comprising:
 a first connection member that electrically connects the metal portion and a ground pattern of the control board to each other,   wherein the motor unit includes an annular stator and a second connection member which electrically connects the stator and the ground pattern of the control board to each other, and   the stator is configured to be groundable.   
     
     
         7 . The electric pump according to  claim 3 , further comprising:
 a first connection member that electrically connects the metal portion and a ground pattern of the control board to each other,   wherein the motor unit includes a second connection member which electrically connects the stator and the ground pattern of the control board to each other, and   the stator is configured to be groundable.   
     
     
         8 . The electric pump according to  claim 5 ,
 wherein the housing includes a coating portion that coats a side of the metal portion which faces the control board, and   the coating portion coats an entire region of the metal portion excluding a connection site of the first connection member.   
     
     
         9 . The electric pump according to  claim 6 ,
 wherein the housing includes a coating portion that coats a side of the metal portion which faces the control board, and   the coating portion coats an entire region of the metal portion excluding a connection site of the first connection member.   
     
     
         10 . The electric pump according to  claim 7 ,
 wherein the housing includes a coating portion that coats a side of the metal portion which faces the control board, and   the coating portion coats an entire region of the metal portion excluding a connection site of the first connection member.