CN212803435U

CN212803435U - Double-pump-body electric fuel pump

Info

Publication number: CN212803435U
Application number: CN202021062795.6U
Authority: CN
Inventors: 孔明明; 王小强
Original assignee: Wenzhou Achr Electric Machinery Co ltd
Current assignee: Wenzhou Achr Electric Machinery Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-03-26
Anticipated expiration: 2030-06-10

Abstract

The utility model discloses an electronic fuel pump of double pump body, including first fuel pump, second fuel pump and the connecting piece of connecting first fuel pump and second fuel pump, be equipped with the first connecting hole of erection joint spare on the casing of first fuel pump, be equipped with the second connecting hole of erection joint spare on the casing of second fuel pump, and the bottom surface of one in first connecting hole and the second connecting hole flushes with the top surface of another person to the terminal surface of first connecting hole and the terminal surface laminating butt joint of second connecting hole, the combination forms complete connecting hole. Because the two fuel pumps are arranged, the two fuel pumps simultaneously supply oil to the engine, so that the oil supply amount of a single fuel pump is reduced, the oil supply load of the single fuel pump is reduced, and the service life of the fuel pump is prolonged.

Description

Double-pump-body electric fuel pump

Technical Field

The utility model relates to an engine accessories technical field, more specifically say, relate to an electronic fuel pump of double pump body.

Background

An electric fuel pump assembly is a device that continuously draws fuel from a fuel tank to provide a specified pressure and flow of fuel to a fuel system, and its operating performance directly affects the performance of the engine.

In the prior art, a single electric fuel pump is mostly adopted for supplying fuel to an engine. In order to meet the oil supply requirement of an engine, the oil supply quantity of the electric fuel pump in unit time is mostly multiple times of the oil consumption quantity under the rated power of the engine, the load of the electric fuel pump is great, and the service life of the electric fuel pump is shortened.

In summary, how to prolong the service life of the electric fuel pump is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an electronic fuel pump of double pump body establishes two fuel pumps and supplies oil for the engine simultaneously, has reduced single fuel pump's load, has prolonged the life of fuel pump.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides an electronic fuel pump of double pump body, includes first fuel pump, second fuel pump and connects first fuel pump with the connecting piece of second fuel pump, be equipped with the installation on the casing of first fuel pump the first connecting hole of connecting piece, be equipped with the installation on the casing of second fuel pump the second connecting hole of connecting piece, just first connecting hole with the bottom surface of one in the second connecting hole flushes with the top surface of another one, so that the terminal surface of first connecting hole with the terminal surface laminating butt joint of second connecting hole, combination form complete connecting hole.

Preferably, the number of the first connecting holes is two, and the connecting piece comprises a first guide rod and a clamping connecting piece;

the clamping connecting piece comprises a mounting surface in contact with the end face of the shell of the first fuel pump, a second guide rod and a clamping plate for clamping the shell of the first fuel pump and the shell of the second fuel pump, and the second guide rod and the clamping plate are connected with the mounting surface.

Preferably, the clamping and connecting piece further comprises a retaining groove connected with the mounting surface, and a retaining protrusion matched with the retaining groove is arranged on the shell of the first fuel pump.

Preferably, the clamp connection further comprises a plug for connection to a fuel level sender of the first fuel pump, the plug being connected to the mounting face.

Preferably, be equipped with the card wire casing that is used for joint wire on the installation face, the card wire casing includes first card wire casing and second card wire casing, the opening direction of first card wire casing with the opening direction of second card wire casing sets up relatively.

Preferably, one of the wall surface of the first fuel pump and the wall surface of the second fuel pump is provided with a groove, and the other one is provided with a protrusion in clamping fit with the groove.

Preferably, the groove is a U-shaped groove, the U-shaped groove includes a first matching surface and a second matching surface, the sum of the heights of the first matching surface and the second matching surface is equal to the wall thickness of the housing of the first fuel pump, and the area of the first matching surface is equal to the area of the second matching surface.

Preferably, the axis of the U-shaped groove is located on the centerline of the contact surface of the first fuel pump for contacting the second fuel pump.

When the double-pump-body electric fuel pump provided by the utility model is assembled, firstly, the shell of the first fuel pump is arranged in the fuel tank; then, positioning the position of a second fuel pump according to the position of the first fuel pump, and combining the first connecting hole and the second connecting hole to form a complete connecting hole; and then the connecting piece is arranged in the connecting hole to connect the shell of the first fuel pump and the shell of the second fuel pump.

Because the two fuel pumps are arranged, the two fuel pumps simultaneously supply oil to the engine, so that the oil supply amount of a single fuel pump is reduced, the oil supply load of the single fuel pump is reduced, and the service life of the fuel pump is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a dual-pump electric fuel pump provided by the present invention;

FIG. 2 is a schematic cross-sectional view of the first fuel pump of FIG. 1 in the direction A-A;

FIG. 3 is a schematic cross-sectional view of the second fuel pump of FIG. 1 in the direction A-A;

FIG. 4 is a schematic view of the clamp connection of FIG. 1;

FIG. 5 is a top schematic view of the clamp connection of FIG. 4;

fig. 6 is a schematic cross-sectional view of the clamp connection of fig. 5 in the direction B-B.

In fig. 1-6:

the fuel pump comprises a first fuel pump 1, a first connecting hole 11, a U-shaped groove 12, a second fuel pump 2, a second connecting hole 21, a first guide rod 3, a clamping connecting piece 4, a mounting surface 41, a second guide rod 42, a clamping plate 43, a stopping groove 44, a plug 45 and a wire clamping groove 46.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The core of the utility model is to provide an electronic fuel pump of double pump body establishes two fuel pumps and is the engine fuel feeding simultaneously, has reduced the load of single fuel pump, has prolonged the life of fuel pump.

Referring to fig. 1-6, fig. 1 is a schematic structural diagram of an embodiment of a dual-pump electric fuel pump according to the present invention; FIG. 2 is a schematic cross-sectional view of the first fuel pump of FIG. 1 in the direction A-A; FIG. 3 is a schematic cross-sectional view of the second fuel pump of FIG. 1 in the direction A-A; FIG. 4 is a schematic view of the clamp connection of FIG. 1; FIG. 5 is a top schematic view of the clamp connection of FIG. 4; fig. 6 is a schematic cross-sectional view of the clamp connection of fig. 4 in the direction B-B.

The utility model provides an electronic fuel pump of double pump body, including first fuel pump 1, second fuel pump 2 and the connecting piece of connecting first fuel pump 1 and second fuel pump 2, be equipped with the first connecting hole 11 of erection joint spare on the casing of first fuel pump 1, be equipped with the second connecting hole 21 of erection joint spare on the casing of second fuel pump 2, and the bottom surface of one in first connecting hole 11 and the second connecting hole 21 flushes with another's top surface, so that the terminal surface of first connecting hole 11 and the terminal surface laminating butt joint of second connecting hole 21, the combination forms complete connecting hole.

The power of the first fuel pump 1 may be the same as the power of the second fuel pump 2 or may be different from the power of the second fuel pump 2. Preferably, the power of the first fuel pump 1 is set to be the same as that of the second fuel pump 2, and the two fuel pumps 1 equally distribute the fuel supply amount required by the engine when supplying fuel.

For a specific structure of the first fuel pump 1, please refer to the prior art, which is not described herein.

The first fuel pump 1 is provided with a first connecting hole 11 on the housing, the second fuel pump 2 is provided with a second connecting hole 21 on the housing, and the first connecting hole 11 and the second connecting hole 21 can be spliced to form a complete connecting hole, as shown in fig. 2.

The connector is installed in the first and

second connection holes

11 and 21, and connects the housing of the first fuel pump 1 and the housing of the second fuel pump 2 by connecting the first and

second connection holes

11 and 21.

Preferably, the number of the first connection holes 11 may be two, and the connector includes the first guide bar 3 and the clamping connector 4; the clamp connector 4 includes a mounting surface 41 that contacts an end surface of the housing of the first fuel pump 1, a second guide rod 42, and a clamp plate 43 for clamping the housing of the first fuel pump 1 and the housing of the second fuel pump 2, and the second guide rod 42 and the clamp plate 43 are connected to the mounting surface 41.

As for the arrangement of the first connection holes 11 and the second connection holes 21, the heights of both the first connection holes 11 may be higher than the heights of both the second connection holes 21, and the bottom surfaces of the first connection holes 11 are flush with the top surfaces of the second connection holes 21; the heights of the two first connecting holes 11 are lower than the heights of the two second connecting holes 21, and the top surfaces of the first connecting holes 11 are flush with the bottom surfaces of the second connecting holes 21; it is also possible that one of the first connection holes 11 is higher than the corresponding second connection hole 21, and the other first connection hole 11 is lower than the corresponding second connection hole 21, as shown in fig. 2 and 3.

First guide rod 3 and second guide rod 42 are inserted into the connecting hole formed by first connecting hole 11 and second connecting hole 21, and the length and size of first guide rod 3 may be the same as or different from the length and size of second guide rod 42, and are specifically determined according to the needs in actual production.

Preferably, in order to reduce the mass of the second guide rod 42, the second guide rod 42 may be provided as a hollow structure.

Preferably, referring to fig. 1 and 2, the clamping plate 43 may be disposed on the clamping connector 4 near one end of the U-shaped groove 12.

The specific length of the clamping plate 43 needs to take into consideration the installation position of each part in the fuel pump housing in actual production so as not to interfere with the normal operation of other components in the fuel pump.

Preferably, ribs may be provided on the surface of the clamping plate 43 to enhance the connection between the mounting surface 41 and the clamping plate 43, taking into account that the clamping plate 43 is located at a distance from the edge of the mounting surface 41.

During assembly, firstly, a shell of the first fuel pump 1 is installed in a fuel tank, and then the installation position of the shell of the second fuel pump 2 is positioned according to the relative position relationship between the first connecting hole 11 and the second connecting hole 21; the first guide rod 3 and the second guide rod 42 on the clamping connector 4 are inserted into the connecting holes, and the clamping plate 43 of the clamping connector 4 is used for clamping the shell of the first fuel pump 1 and the shell of the second fuel pump 2, so that the first fuel pump 1 and the second fuel pump 2 are connected.

Preferably, the clamp connector 4 may further include a retaining groove 44 connected to the mounting surface 41, and the housing of the first fuel pump 1 may further include a retaining protrusion engaged with the retaining groove 44. Because the retaining protrusion is arranged right above the retaining groove 44, the clamping connecting piece 4 cannot be separated from the connecting hole under the limitation of the retaining structure, and the stability of connection between the first fuel pump 1 and the second fuel pump 2 is improved.

Preferably, referring to fig. 5 and 6, the clamping connector 4 is further provided with a plug 45 for connecting a fuel level sensor of the first fuel pump 1, the plug 45 is connected with the mounting surface 41, and the fuel level sensor is electrically connected with an external lead through the plug 45.

Preferably, in order to prevent the wires from being arranged in a disordered manner, the mounting surface 41 may be provided with wire clamping grooves 46 for clamping the wires, each wire clamping groove 46 includes a first wire clamping groove and a second wire clamping groove, the opening direction of the first wire clamping groove and the opening direction of the second wire clamping groove are arranged oppositely, the wires are conveniently clamped into the wire clamping grooves 46, and the wires are effectively prevented from being pulled out.

During assembly, firstly, a shell of the first fuel pump 1 is installed in a fuel tank, then the position of the second fuel pump 2 is positioned according to the position of the first fuel pump 1, the first connecting hole 11 and the second connecting hole 21 are combined to form a complete connecting hole, and a connecting piece is installed in the connecting hole to connect the shell of the first fuel pump 1 and the shell of the second fuel pump 2.

In the embodiment, the two fuel pumps are arranged to supply oil simultaneously, so that the oil supply amount of a single fuel pump is reduced, the oil supply load of the single fuel pump is reduced, and the service life of the fuel pump is prolonged.

Meanwhile, the connecting structure is simple, and the installation, the manufacture, the disassembly and the maintenance are convenient.

On the basis of the above embodiment, in order to facilitate the positioning connection of the first fuel pump 1 and the second fuel pump 2, one of the wall surface of the first fuel pump 1 and the wall surface of the second fuel pump 2 is provided with a groove, and the other is provided with a protrusion in snap fit with the groove.

Preferably, referring to fig. 1-3, the groove may be a U-shaped groove 12, and the U-shaped groove 12 includes a first mating surface and a second mating surface, the sum of the heights of the first mating surface and the second mating surface is equal to the wall thickness of the housing of the first fuel pump 1, and the area of the first mating surface is the same as the area of the second mating surface.

Preferably, the U-shaped groove 12 may be provided on a centerline of a contact surface of the first fuel pump 1 for contacting the second fuel pump 2.

It should be noted that, in the present document, the first fuel pump 1 and the second fuel pump 2, the first connection hole 11 and the second connection hole 21, the first guide rod 3 and the second guide rod 42, the first snap groove and the second snap groove, and the first mating surface and the second mating surface, which are mentioned above, are only used to distinguish the difference of the positions, and do not contain any limitation to the sequence.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

It is right above that the utility model provides an electronic fuel pump of double pump body has carried out the detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The utility model provides an electronic fuel pump of double pump body, its characterized in that includes first fuel pump (1), second fuel pump (2) and connects first fuel pump (1) with the connecting piece of second fuel pump (2), be equipped with the installation on the casing of first fuel pump (1) first connecting hole (11) of connecting piece, be equipped with the installation on the casing of second fuel pump (2) second connecting hole (21) of connecting piece, just first connecting hole (11) with the bottom surface of one in second connecting hole (21) flushes with the top surface of another person, so that the terminal surface of first connecting hole (11) with the terminal surface laminating butt joint, the combination of second connecting hole (21) form complete connecting hole.

2. The dual-pump electric fuel pump of claim 1, wherein the first connection holes (11) are two in number, the connection piece comprising a first guide rod (3) and a clamping connection piece (4);

the clamping connecting piece (4) comprises a mounting surface (41) in contact with the end surface of the shell of the first fuel pump (1), a second guide rod (42) and a clamping plate (43) for clamping the shell of the first fuel pump (1) and the shell of the second fuel pump (2), and the second guide rod (42) and the clamping plate (43) are connected with the mounting surface (41).

3. The dual-pump electric fuel pump according to claim 2, wherein the clamping connector (4) further comprises a retaining groove (44) connected to the mounting surface (41), and a retaining projection fitted to the retaining groove (44) is provided on the housing of the first fuel pump (1).

4. Dual pump body electric fuel pump according to claim 2, characterized in that the clamping connection (4) further comprises a plug (45) for connection with a fuel level sensor of the first fuel pump (1), the plug (45) being connected with the mounting face (41).

5. The dual-pump electric fuel pump according to claim 4, wherein a wire clamping groove (46) for clamping a wire is arranged on the mounting surface (41), the wire clamping groove (46) comprises a first wire clamping groove and a second wire clamping groove, and the opening direction of the first wire clamping groove is opposite to the opening direction of the second wire clamping groove.

6. The dual pump electric fuel pump of any of claims 1 to 5, wherein one of the wall of the first fuel pump (1) and the wall of the second fuel pump (2) is provided with a recess and the other is provided with a projection snap-fitted into the recess.

7. The dual pump electric fuel pump of claim 6, wherein the groove is a U-shaped groove (12), and the U-shaped groove (12) comprises a first mating surface and a second mating surface, the sum of the heights of the first mating surface and the second mating surface is equal to the wall thickness of the housing of the first fuel pump (1), and the area of the first mating surface is equal to the area of the second mating surface.

8. The dual-pump electric fuel pump of claim 7, characterized in that the axis of the U-shaped groove (12) is located on the centerline of the contact surface of the first fuel pump (1) for contacting the second fuel pump (2).