CN201137574Y

CN201137574Y - Automobile oil fuel pump

Info

Publication number: CN201137574Y
Application number: CNU200720060349XU
Authority: CN
Inventors: 李清济
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-30
Filing date: 2007-11-30
Publication date: 2008-10-22
Anticipated expiration: 2017-11-30

Abstract

The utility model relates to an automobile fuel pump, wherein permanent magnet (10) and a motor rotor part (2) are arranged in a round piping magnetizer shell (1), the two ends are respectively equipped with an oil inlet end cover (3) and an oil outlet end cover (4), a rotor part is capable of being reelingly supported on a motor main shaft (5), the two ends of the main shaft are supported on the oil inlet end cover and the oil outlet end cover, the rotor drives a pump wheel (6) and a commutator (7) to rotate, and a main shaft end which is supported on the oil inlet end cover is a fixed end. A bearing (8) of the motor rotor part which comprises the commutator is inlayed and modeled in the commutator, wear material layers (11) are covered on a position of sealing pressure and the surface of the shaft hole, and the sealing pressure contacts with the pump body on the two end surfaces of the pump wheel. When the automobile fuel pump is assembled and installed, a motor is capable of being debugged through that the oil outlet end cover part, the rotor part and a rotor support plate are arranged, the time is saved, and the labor is saved. When the bearing is inlayed and modeled in the commutator to arrange, the process is less, the cost is low, and the noise is low. The pump wheel is capable of meeting the demands that a friction portion requires to be wore and the whole body requires reducing weight at the same time, and the service life is greatly prolonged.

Description

A kind of novel car fuel pump

Technical field

The utility model relates to a kind of long service life and wear-resisting novel car fuel pump.

Background technique

Existing vehicle fuel pump structure is generally: in the shell of a pipe shape magnet case permanent magnet and rotor are installed, be stamped respectively at the two ends of shell is oil-feed end cap and fuel-displaced end cap, have filler opening and oil outlet on the end cap, the rotor that comprises commutator rotatably is supported on the fixing electric machine main shaft, fixing electric machine main shaft one end is supported on oil outlet end and covers, the other end is fixed on oil inlet end and covers, the rotor band changes a pump impeller made from homogenous material, the other end is equipped with commutator, when pump impeller rotates, suck and the compression fuel oil, make it axially pass the interior oil outlet output of shell from fuel-displaced end cap from oil-feed end cap filler opening.This fuel pump has following deficiency in design: 1, Gu Ding electric machine main shaft is installed in assembling, the debugging that oil inlet end covers when producing and brings very big inconvenience, because only after all installing fuel pump, have problem just can only could to change or repair by completely knocked down time-consuming taking a lot of work if find the electrical equipment or the pump housing; 2, the bearing that rotatably is supported on the rotor that comprises commutator on the electric machine main shaft is located in the rotor many costs of operation height during installation; 3, the pump impeller made of homogenous material is difficult to satisfy simultaneously the friction position and requires the wear-resisting and whole requirement that requires weight reduction.

The model utility content

The purpose of this utility model just provides that a kind of noise is little, assembly and adjustment is convenient, cost of production low and pump impeller and the long-lived novel car fuel pump of bearing.

For achieving the above object, novel car fuel pump of the present utility model, in a pipe shape magnetic conductive shell, permanent magnet is installed and comprises the motor rotor part of commutator, the two-port of shell has oil-feed end cap and fuel-displaced end cap respectively, motor rotor part rotatably is supported on the fixing electric machine main shaft, the electric machine main shaft two ends are supported on the oil-feed end cap respectively and oil outlet end covers, and the motor rotor part band changes pump impeller, it is characterized in that: being supported on the electric machine main shaft end that oil outlet end covers is fixed end.

It is further, described that to be fixed on electric machine main shaft end that oil outlet end covers be to be injection molding to be wrapped in the oil outlet end that engineering plastics make and to cover.

On the basis of the above, this novel car fuel pump also can be done further improvement:

Described oil outlet end exterior surface is inlaid with the metal positioning ring with fixing electric machine main shaft concentric.

The described bearing edge that rotatably is supported on the motor rotor part integral body that comprises commutator on the electric machine main shaft is moulded in commutator.

The sealing load place and the axis hole surface coverage of the contact pump housing have wear-resistant material layer on the both ends of the surface of described pump impeller.

Beneficial effect: cover because the fixing electric machine main shaft end of this novel car fuel pump is wrapped on the plastics oil outlet end, when assembling, only oil outlet end cover, rotor part and rotor supporting plate need be loaded onto and just can carry out the motor debugging, and the oil-feed end cap of fuel pump and pump housing etc. all need not be installed aptitude test electrical appliance part, time and labour saving; Oil outlet end exterior surface edge is moulded the metal positioning ring with fixing electric machine main shaft concentric, can just can guarantee the coaxality of wear-resisting rigid bearing and the shell and the permanent magnet of fuel-displaced end cap during installation easily adding man-hour with fixing electric machine main shaft finish turning one cutter on metal positioning ring outer surface that is as the criterion; The bearing edge that comprises the rotor of commutator is moulded in commutator, and the few cost low noise of operation is little during installation; The sealing load place of the contact pump housing and axis hole surface coverage have wear-resistant material layer can satisfy the wear-resisting and whole requirement that requires weight reduction of friction position requirement simultaneously on the both ends of the surface of pump impeller, and prolong greatly working life.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing and exemplary embodiments.

Fig. 1 is the utility model embodiment's a composition structure assembling cross-sectional schematic;

Fig. 2 is that the oil inlet end cover structure that embodiment is fixed with electric machine main shaft is analysed and observe enlarged diagram;

Fig. 3 is embodiment's a pump impeller structural upright schematic representation.

Among the figure: 1-magnetizer shell, 2-motor rotor part, 3-oil inlet end cover, the fuel-displaced end cap of 4-, the electric machine main shaft that 5-is fixing, 6-pump impeller, the 7-commutator, 8-commutator high-abrasive material bearing, 9-metal positioning ring, the 10-permanent magnet, the 11-wear-resistant material layer, the 12-high-abrasive material pump housing, the 13-impeller is outer shroud fixedly, 14-rotor supporting plate, the 15-anti-wear sleeve.

Embodiment

As shown in Figure 1 to Figure 3, novel car fuel pump of the present utility model, permanent magnet 10 is installed in the magnetizer shell 1 of a pipe shape and comprises the motor rotor part 2 of commutator 7, the two-port of shell has oil-feed end cap 3 and oil outlet end cover 4 respectively, motor rotor part 2 can be rotated to support on the fixing electric machine main shaft 5, the electric machine main shaft two ends are supported on the oil-feed end cap respectively and oil outlet end covers, motor rotor part 2 bands change pump impeller 6, pump impeller has fixedly outer shroud 13 outward, and the pump housing 12 is made with high-abrasive material; Being supported on the electric machine main shaft end that oil outlet end covers is fixed end, be injection molding and be wrapped in the oil outlet end that engineering plastics make and cover, at the oil outlet end exterior surface, be inlaid with metal positioning ring 9 with fixing electric machine main shaft concentric, the sealing load place and the axis hole surface coverage of the contact pump housing have wear-resistant material layer 11 on the both ends of the surface of pump impeller, and high-abrasive material bearing 8 and anti-wear sleeve 15 that motor rotor part 2 is moulded in commutator by edge can be rotated to support on the electric machine main shaft.Earlier high-abrasive material bearing edge is moulded in commutator during making, then commutator and rotor are assembled into motor rotor part integral body.

Claims

1, a kind of novel car fuel pump, permanent magnet (10) is installed in a pipe shape magnetizer shell (1) and comprises the motor rotor part (2) of commutator (7), the two-port of shell has oil-feed end cap (3) and fuel-displaced end cap (4) respectively, motor rotor part rotatably is supported on the fixing electric machine main shaft (5), the electric machine main shaft two ends are supported on the oil-feed end cap respectively and oil outlet end covers, the motor rotor part band changes pump impeller (6), it is characterized in that: being supported on the electric machine main shaft end that oil outlet end covers is fixed end.

2, novel car fuel pump according to claim 1 is characterized in that: described to be fixed on electric machine main shaft end that oil outlet end covers be to be injection molding to be wrapped in the oil outlet end that engineering plastics make and to cover.

3, novel car fuel pump according to claim 1 and 2 is characterized in that: described oil outlet end exterior surface is inlaid with the metal positioning ring (9) with fixing electric machine main shaft concentric.

4, novel car fuel pump according to claim 1 and 2 is characterized in that: described bearing (8) edge that rotatably is supported on the motor rotor part that comprises commutator on the electric machine main shaft is moulded in commutator.

5, novel car fuel pump according to claim 3 is characterized in that: described bearing (8) edge that rotatably is supported on the motor rotor part that comprises commutator on the electric machine main shaft is moulded in commutator.

6, novel car fuel pump according to claim 1 and 2 is characterized in that: the sealing load place and the axis hole surface coverage of the contact pump housing have wear-resistant material layer (11) on the both ends of the surface of described pump impeller.

7, novel car fuel pump according to claim 3 is characterized in that: the sealing load place and the axis hole surface coverage of the contact pump housing have wear-resistant material layer (11) on the both ends of the surface of described pump impeller.

8, novel car fuel pump according to claim 4 is characterized in that: the sealing load place and the axis hole surface coverage of the contact pump housing have wear-resistant material layer (11) on the both ends of the surface of described pump impeller.

9, novel car fuel pump according to claim 5 is characterized in that: the sealing load place and the axis hole surface coverage of the contact pump housing have wear-resistant material layer (11) on the both ends of the surface of described pump impeller.