Liquid pump, in particular for a component of a drive train of a motor vehicle

Abstract

A liquid pump having an electric motor, a pump assembly, which is driven by the electric motor, and a housing wherein the electric motor and the pump assembly are arranged, wherein the housing is in the form of a one-piece, injection-moulded pot having a base and side walls, wherein the pump assembly bears against the base, and the electric motor is arranged on the open side of the housing remote from the base.

1 . A liquid pump comprising an electric motor, a pump assembly, which is driven by the electric motor, and a housing in which the electric motor and the pump assembly are arranged, wherein the housing is in the form of a one-piece, injection-moulded pot having a base and side walls, wherein the pump assembly bears against the base and the electric motor is arranged on the open side of the housing remote from the base. 
     
     
         2 . The liquid pump according to  claim 1 , wherein an intake opening and/or a discharge opening of the liquid pump is arranged in the base of the housing. 
     
     
         3 . The liquid pump according to  claim 2 , wherein a sealing structure is associated with the opening in the base of the housing. 
     
     
         4 . The liquid pump according to  claim 1 , wherein the pump assembly has a pump housing which bears against the base. 
     
     
         5 . The liquid pump according to  claim 4 , wherein the pump housing is centred in the housing. 
     
     
         6 . The liquid pump according to  claim 4 , wherein the pump housing is fixedly connected to the housing. 
     
     
         7 . The liquid pump according to  claim 1 , wherein there is provided a separating pot which extends between a stator and a rotor of the electric motor and separates a hydraulic side of the liquid pump from a dry side such as electronics side. 
     
     
         8 . The liquid pump according to  claim 7 , wherein the separating pot has a flange which is connected to the housing. 
     
     
         9 . The liquid pump according to  claim 8 , wherein the flange is fixedly connected to the housing. 
     
     
         10 . The liquid pump according to  claim 8 , wherein the flange bears against the pump housing. 
     
     
         11 . The liquid pump according to  claim 7 , wherein the separating pot is formed by a pipe socket which is formed in one piece with the housing, and a separating cover which is sealingly connected to the end face of the pipe socket. 
     
     
         12 . The liquid pump according to  claim 1 , wherein a printed circuit board is arranged on the open side of the housing remote from the base, which printed circuit board is encapsulated by potting compound in the housing together with the stator. 
     
     
         13 . The liquid pump according to  claim 1 , wherein screw openings are integrated into the base of the housing. 
     
     
         14 . The liquid pump according to  claim 1 , wherein screw openings spaced apart from the base in the axial direction are provided. 
     
     
         15 . The liquid pump according to  claim 1 , wherein the pump assembly is a gear ring pump. 
     
     
         16 . The liquid pump according to  claim 2 , wherein a sealing groove or a cylindrical surface is associated with the opening in the base of the housing. 
     
     
         17 . The liquid pump according to  claim 4 , wherein the pump housing is welded or screwed to the housing. 
     
     
         18 . The liquid pump according to  claim 8 , wherein the flange is welded, adhesively bonded, screwed or riveted to the housing. 
     
     
         19 . The liquid pump according to  claim 8 , wherein the flange bears against the pump housing and is centred in the pump housing. 
     
     
         20 . The liquid pump according to  claim 1 , wherein the pump assembly is a gerotor pump.