Patent ID: 9011112
Filing Date: 2015-04-21
Classification: F04D,H02K

Abstract:
1. A fuel pump comprising: a cylindrical housing; a pump cover for closing one end of the housing and having an inlet port; an end cover for closing the other end of the housing and having an outlet port; a cylindrical stator having multiple stator cores, on each of which stator coils corresponding to respective phase windings is wound, the multiple stator cores being arranged at an inner peripheral surface of the housing and in a circumferential direction of the housing, wherein each of the stator coils are composed of multiple pairs of coils which are opposed to each other with respect to a center axis of the cylindrical stator and the coils of each pair form the same phase winding; a rotor rotatably accommodated in an inside of the stator in a radial direction thereof; a shaft coaxially arranged with the rotor so that the shaft is rotated together with the rotor; an impeller connected to the shaft and thereby rotated together with the shaft so as to draw fuel from the inlet port and to pump out pressurized fuel from the outlet port; and a terminal sub-assembly provided in an axial side portion of the stator on a side of the end cover, wherein the terminal sub-assembly has multiple conductive members connected to end portions of the stator coils on the side of the end cover, wherein the multiple conductive members are integrally formed in the terminal sub-assembly, and wherein the terminal sub-assembly has terminals, to which wires are connected to supply electric power to the stator coils, wherein each of the conductive members is formed in an arc shape, wherein each of the terminals extends in a direction parallel to the center axis of the cylindrical stator, wherein each of the conductive members is arranged in a circumferential direction of the terminal sub-assembly and displaced by a predetermined angle from one another in the circumferential direction, wherein the conductive members are integrally molded with resin, and wherein each of the terminals is arranged in a straight line and a part of each of the terminals is molded with the resin.