CN201568180U - Electric injection fuel pump head - Google Patents

Abstract

The embodiment of the utility model discloses an electric injection fuel pump head which comprises a plastic head, a carbon brush and an inductor arranged on the plastic head, and a positive electrode insert and a negative electrode insert embedded in the plastic head. From the technical scheme we can see that because of the overall design of the inductor and the carbon brush arranged on the plastic head of the pump head, the processing procedures and the material selection of a carbon brush frame do not need to consider, thereby simplifying the processing procedures of the pump head, and raw materials and cost are saved because of the special material selection of the carbon brush frame; the positive electrode insert and the negative electrode insert are embedded in the plastic head, which can well shorten the work cycle of the next procedure; and simultaneously, the inserts are embedded in the plastic head, thereby not only solving the problem of the fuel leakage of a traditional plastic head and changing the traditional combined type into an overall type, but also simplifying the product structure, so that the matching of parts is tighter.

Description

A kind of electric-spraying fuel pump pump head

Technical field

The utility model relates to the electric pump field, more particularly, relates to a kind of electric-spraying fuel pump pump head.

Background technique

At present, pump head mainly is made up of plastic cap 11 and 12 two parts of carbon brush holder in the electric-spraying fuel pump, and one-way valve 13 and Decompression valves 14 is installed as depicted in figs. 1 and 2 on plastic cap 11; Wherein, left inductance 121, right inductance 122, electric capacity 125, carbon brush 126, carbon brush 126 are installed on carbon brush holder 12 to be fixed on the carbon brush holder by brush holder spring 127 and carbon brush catch 123 and 124, be provided with bearings mounted hole 1210 in the central position of carbon brush holder 12, positive and negative electrode inserted sheet 128 and 129 are installed on the carbon brush holder.As shown in Figure 3 and Figure 4.Adopt the pump head of this structure, carbon brush holder 12 is an individual components, because of its combination property comparatively crucial, so in the selection of material all than other parts costliness, because it is loaded down with trivial details to process two parts operations in course of working respectively.In addition, because the design of this both positive and negative polarity inserted sheet on carbon brush holder, is being passed on the hole corresponding on the plastic cap then, the electric-spraying fuel pump pump head will produce the leakage of oil problem because of the hole on the plastic cap like this.

The model utility content

In view of this, the utility model provides a kind of electric-spraying fuel pump pump head, has simplified electric-spraying fuel pump pump head manufacturing procedure and has solved pump head leakage of oil problem.

For achieving the above object, the utility model provides following technological scheme:

A kind of electric-spraying fuel pump pump head comprises:

Plastic cap;

Be installed in carbon brush and inductance on the described plastic cap;

Be embedded in positive electrode inserted sheet and negative electrode inserted sheet on the described plastic cap.

From technique scheme as can be seen, the utility model is the integral design on the plastic cap of pump head with inductance and carbon brush design, just need not to consider the manufacturing procedure and the selection of carbon brush holder, simplifies the manufacturing procedure of pump head, special because of the carbon brush holder selection, and then saved raw material and cost; The both positive and negative polarity inserted sheet is embedded in the plastic cap, can well shorten the operation cycle of next operation; Meanwhile, inserted sheet is embedded in the plastic cap, and the problem of plastic cap leakage of oil changes original combined type into integrated type before not only having solved, and has simplified product structure, makes the cooperation between the parts tightr.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is existing electric-spraying fuel pump pump head side view;

Fig. 2 is existing electric-spraying fuel pump pump head plan view;

Fig. 3 is existing electric-spraying fuel pump pump head carbon brush holder plan view;

Fig. 4 is existing electric-spraying fuel pump pump head carbon brush holder side view;

The electric-spraying fuel pump pump head plan view that Fig. 5 provides for the utility model embodiment;

The electric-spraying fuel pump pump head plan view that Fig. 6 provides for the utility model embodiment;

The electric-spraying fuel pump pump head side view that Fig. 7 provides for the utility model embodiment.

Embodiment

Below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

The utility model provides a kind of electric-spraying fuel pump pump head, has simplified electric-spraying fuel pump pump head manufacturing procedure and has solved pump head leakage of oil problem.

A kind of electric-spraying fuel pump pump head shown in Fig. 5-7, comprising: plastic cap is provided with one-way valve 21, Decompression valves 23, right inductance 24, left inductance 25, positive and negative electrode inserted sheet 22 and carbon brush 27 on plastic cap.

Wherein, one-way valve 21 is identical with the mounting structure of prior art with Decompression valves 23;

Positive and negative electrode inserted sheet 22 is embedded in the plastic cap;

Be provided with the through hole 26 that the pump head bearing is installed in the plastic cap center;

Left side inductance 25 and right inductance 24 are directly installed in the plastic cap;

Carbon brush by brush holder spring 28 by spot-welded on plastic cap.

Above-mentioned plastic cap adds that other parts that are provided with on the plastic cap just form the electric-spraying fuel pump pump head, adopts the electric-spraying fuel pump pump head of present embodiment, and the pump head of plastic cap and carbon brush holder split-type design has following advantage before replacing:

Adopt integral design, can avoid the choosing of carbon brush holder, just need not is processing plastic head and carbon brush holder, has simplified manufacturing procedure.And because the carbon brush holder selection is special, and then can save raw material and cost; The positive and negative electrode inserted sheet directly is embedded in the plastic cap, can solve the technical problem of leakage of oil in the prior art.

To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.

Claims (1)

1. an electric-spraying fuel pump pump head is characterized in that, comprising:

Plastic cap;

Be installed in carbon brush and inductance on the described plastic cap;

Be embedded in positive electrode inserted sheet and negative electrode inserted sheet on the described plastic cap.

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