CN210738711U

CN210738711U - Fuel pump support and fuel pump

Info

Publication number: CN210738711U
Application number: CN201921354163.4U
Authority: CN
Inventors: 赵刘根; 李宏
Original assignee: Vitesco Automotive Wuhu Co Ltd
Current assignee: Vitesco Automotive Wuhu Co Ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-06-12
Anticipated expiration: 2029-08-20

Abstract

The utility model relates to a fuel pump support, it includes first support portion (11) and second support portion (12), first support portion (11) are intended to be jointed oil storage box (3) and have along the opening that link up from top to bottom, second support portion (12) have the cavity cylinder that is used for accepting pump core (2), and this cavity cylinder is in the open-ended below with first support portion (11) separate ground downwardly extending to through long and thin connecting piece with first support portion (11) link to each other. According to the utility model discloses, the top edge of this cavity cylinder is provided with upwards extending baffle (121), baffle (121) are constructed to support in the direction perpendicular to from top to bottom and lean on the open-ended periphery. The design of the fuel pump bracket has the advantages of cost effectiveness and capability of remarkably improving the vibration reduction effect and the reliability of the fuel pump. The utility model discloses still relate to the fuel pump including this kind of fuel pump support.

Description

Fuel pump support and fuel pump

Technical Field

The utility model belongs to the technical field of the automotive technology and specifically relates to a fuel pump that is used in the oil tank of car. More specifically, the present invention relates to a fuel pump bracket and a fuel pump including the same.

Background

Fuel pumps are usually arranged in the fuel tank of a motor vehicle for pumping fuel from the fuel tank to a fuel supply line and thence to the engine. The fuel pump mainly comprises a pump core, wherein the pump core is placed in a fuel storage box through a fuel pump bracket so as to suck fuel entering the fuel storage box from a fuel tank; and the fuel pump bracket is also connected with the pump flange through a guide rod, so that the fuel pump can be installed or fixed in the fuel tank through the pump flange.

When the fuel pump is operating, the pump core tends to run at a high speed, causing vibration of the fuel pump bracket and thus noise generation. For this reason, various solutions have been developed for reducing vibrations and thus noise. The solutions known so far generally focus on the portion of the fuel pump bracket that is in direct contact or connected with the pump core and mainly aim at blocking or reducing the transmission of vibrations from said portion to other portions of the fuel pump bracket.

However, the prior art has not provided a solution for protecting a portion of the fuel pump bracket that is in direct contact with or connected to the pump core, for example, a connection between the portion and another portion of the fuel pump bracket, so as to improve the reliability of the fuel pump bracket while achieving a vibration damping effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can strengthen this fuel pump's reliability and more effective scheme in structure and cost when reducing the vibration and the noise of fuel pump.

To this end, the invention provides a fuel pump bracket, which comprises a first bracket part and a second bracket part, wherein the first bracket part is used for connecting an oil storage box and is provided with an opening which is communicated along the up-down direction, the second bracket part is provided with a hollow cylinder body used for receiving a pump core, the hollow cylinder body is arranged below the opening and extends downwards at intervals from the first bracket part and is connected with the first bracket part through an elongated connecting piece, wherein, the upper edge of the hollow cylinder body is provided with a baffle plate which extends upwards, and the baffle plate is constructed to be capable of abutting against the periphery of the opening in the direction vertical to the up-down direction.

The technical scheme of the utility model can prevent to cause because of the too big elongated connecting piece fracture inefficacy that links to each other with this cavity cylinder of pump core vibration range through the lateral displacement who is used for holding the cavity cylinder of pump core in the restriction fuel pump support, consequently can increase the connection reliability of fuel pump support effectively when realizing the damping and the effect of making an uproar of falling. The utility model discloses can implement under the condition of not carrying out big change to existing fuel pump structure, have the manufacturing and set up the very low advantage of cost.

The utility model discloses a fuel pump support includes following preferred and favorable technical characterstic:

-the first shelf portion comprises a peripheral wall configured to mate with an inner wall of a reservoir box and a bottom wall perpendicular to the peripheral wall, the opening being formed in the bottom wall;

-the baffle extends upwardly so that an upper edge of the baffle passes through the opening and is flush with the upper surface of the bottom wall;

-the baffle extends upwardly so that an upper edge of the baffle passes through the opening and beyond the upper surface of the bottom wall by 1 to 5 mm;

-the baffle comprises a plurality of arcuate baffle elements distributed circumferentially along the upper edge of the hollow cylinder;

-the baffle element extends flush with the circumferential wall of the hollow cylinder;

-the elongate connector comprises a plurality of sets of pairs of legs, the plurality of arcuate baffle elements being arranged circumferentially staggered from the sets of pairs of legs; and

-the number of pairs of legs is three, and the number of baffle elements is three.

The utility model also provides a fuel pump. The fuel pump includes a pump cartridge and a reservoir, and includes a fuel pump bracket as described above.

Advantageously, the fuel pump carrier further comprises a third carrier part in the form of a sleeve for receiving the fine filter.

It is also advantageous if the fuel pump further comprises a connecting tube for connecting the pump element to the fine filter, which connecting tube extends along an L-shaped path between the second bracket part and the third bracket part. Preferably, the connecting tube is formed of a corrugated tube.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

FIG. 1 shows a perspective view of a fuel pump including a reservoir cartridge, a pump cartridge and a fuel pump bracket;

fig. 2 is a perspective view of a fuel pump bracket according to a preferred embodiment of the present invention.

Detailed Description

The technical solution of the present invention is further described in detail by the following examples in conjunction with the accompanying drawings, which are intended to explain the general concept of the present invention and should not be interpreted as a limitation of the present invention.

Referring to fig. 1, the fuel pump of the present invention may include a pump core 2 and a fuel storage case 3, wherein the pump core 2 may be placed in the fuel storage case 3 through a fuel pump bracket 1.

Turning to fig. 2, a fuel pump bracket 1 according to the present invention may include an upper first bracket portion 11 and a lower second bracket portion 12. The first frame portion 11 is adapted to engage with the inner wall of the reservoir 3 so as to be positionally fixedly seated in the reservoir 3. The second bracket part 12 serves to accommodate the pump cartridge 2 and may thus comprise or be formed by a hollow cylinder. The first bracket part 11 and the second bracket part 12 may be integrally formed from a synthetic or polymer material, for example by injection moulding.

It should be noted here that the directions in the present invention are defined with reference to the orientation of the fuel pump in normal use. The direction "up" refers to a direction oriented away from the ground, i.e., toward the top in fig. 1-2. The direction "downward" refers to a direction oriented toward the ground, i.e., downward in fig. 1-2.

Still referring to fig. 2, the first frame part 11 has an opening 113 therethrough in the up-down direction, and the second frame part 12, in particular its hollow cylindrical body for receiving the pump cartridge 2, extends downwardly below the first frame part 11 and substantially in alignment with the opening 113, so that the pump cartridge 2 can be placed into the hollow cylindrical body from above via the opening 113.

In particular, the second frame part 12 or its hollow cylinder is vertically offset from the first frame part 11, i.e. they are spaced apart and can be connected by means of elongated connecting elements in the form of legs 14, for example. In this way, when the pump core 2 is operated so that vibrations occur in the second frame part 12 which is in direct contact with the pump core 2, the vibrations can be absorbed and damped by the elongated connections in the form of the legs 14, whereby only small or even no vibrations can be transmitted to the first frame part 11 and thus to the reservoir box 3 or the pump flange or the like. This significantly reduces the noise that can be perceived by the vehicle user.

Specifically, the first frame portion 11 may include a generally annular outer peripheral wall 111, and the outer peripheral wall 111 may have an outer contour and size that match the inner contour and size of the cartridge 3. Furthermore, as can be seen from fig. 1-2, the peripheral wall 111 may also have, at its upper edge, a rim projecting in the radial direction or in the lateral direction (i.e. in a direction perpendicular to the up-down direction) for hooking onto the upper edge of the reservoir box 3, and may have projecting or recessed portions at the sides in order to facilitate its insertion into the reservoir box 3 or its removal from the reservoir box 3, as is generally known.

Said first frame portion 11 may also comprise a bottom wall 112, which bottom wall 112 may be oriented generally perpendicular to the peripheral wall 111 and may for example engage a lower edge of the peripheral wall 111, in particular be formed integrally with the peripheral wall 111 by injection moulding. The opening 113 may be formed in the bottom wall 112, and the second frame portion 12 or the hollow cylinder may extend downward below the bottom wall 112 substantially perpendicular to the bottom wall 112. Here, it should be noted that the hollow cylinder of the second bracket part 12 may have a shape adapted to the outer contour of the pump cartridge 2.

In the preferred embodiment shown in the figures, the elongate connecting member comprises a plurality of sets of pairs of legs 14, for example three sets of pairs of legs 14. The legs 14 are connected at one end to the outer peripheral wall 111 or the bottom wall 112 of the first frame portion 11 and at the other end to the side surface of the hollow cylindrical body of the second frame portion 12. Preferably, the three sets of pairs of legs 14 are evenly distributed circumferentially on the side surface of the hollow cylinder of the second cradle portion 12. It is also preferred that the first bracket part 11, the second bracket part 12 and the legs 14 are formed in one piece by injection moulding.

According to the invention, a baffle 121 can be provided at the upper part of the hollow cylinder of the second bracket part 12, in particular at its upper edge, said baffle 121 extending upwards into the area of said opening 113 so as to be able to abut against the periphery of this opening 113 when deflecting in the lateral direction. To this end, the baffle 121 can be constructed and arranged such that the side surface of the baffle 121 facing away from the pump cartridge 2 faces the periphery of the opening 113 and is spaced apart from the periphery by a small gap.

In this way, when the leg 14 connected to the second leg portion 12 is displaced, in particular displaced in a lateral direction, due to the operation of the pump cartridge 2, the baffle 121 will deflect against the periphery of the opening 113. Therefore, the baffle plate 121 functions as a stopper and limits the movement amplitude of the second frame portion 12 or the leg 14 in the lateral direction, so that it is possible to both suppress the generation of vibration and avoid the leg 14 from breaking and failing due to an excessive lateral displacement amplitude, thereby greatly improving the connection reliability between the second frame portion 12 and the first frame portion 11.

Here, it should be noted that the maximum displacement amplitude of the leg 14 in the lateral direction may be set or changed by adjusting the size of the gap between the side surface of the shutter 121 and the periphery of the opening 113.

Preferably, the baffle 121 extends upwardly from the second frame portion 12 such that an upper edge of the baffle 121 passes through the opening 113 and is substantially flush with the upper surface of the bottom wall 112 of the first frame portion 11. In this way, it is avoided that the baffle 121 affects the available space in the first frame part 11.

Of course, it is also contemplated that the baffle 121 extends upwardly through the opening 113 such that the upper edge of the baffle 121 extends slightly beyond the upper surface of the bottom wall 112, for example by a dimension between 1mm and 5mm beyond the upper surface.

Also preferably, as shown in fig. 2, the baffle 121 comprises a plurality of curved or curved baffle elements, for example three curved baffle elements, distributed along the circumference of the hollow cylinder of the second bracket part 12. These baffle elements may be evenly distributed at regular intervals on the upper edge of the hollow cylinder. In particular, the baffle element may extend as an extension of the hollow cylinder upwards flush with both sides of the circumferential wall of the hollow cylinder.

As can be seen from fig. 2, the baffle elements forming the baffle 121 are preferably distributed in a staggered manner in the circumferential direction with respect to the pairs of legs 14 for connecting the first and

second leg parts

11 and 12. In this way, the vibration load caused by the pump core 2 can be uniformly and dispersedly absorbed by the baffle member and the leg members 14.

Still referring to fig. 2 in conjunction with fig. 1, the fuel pump bracket according to the present invention may further include a third bracket portion 13 for accommodating the fine filter 4. The third bracket part 13 may take the form of a sleeve extending downwardly from the first bracket part 11. Specifically, as shown in fig. 2, the third bracket part 13 may be formed of a ring-shaped portion that projects downward flush with an up-down through opening 114 in a bottom wall 112 of the first bracket part 11.

Under the condition that is provided with third support portion 13 that is used for holding fine filter 4, the utility model discloses a fuel pump can also include connecting pipe 15 that is used for connecting pump core 2 and fine filter 4. As shown in fig. 1, the connecting tube 15 can extend along an L-shaped path between the pump element 2 and the fine filter 4, i.e. between the second holder part 12 and the third holder part 13.

This simplifies the assembly of the fuel pump and increases the rigidity of the connection between the pump cartridge 2 and the fine filter 4, on the one hand, shortens the length of the connecting tube 15 and avoids the generation of resonance noise due to the connecting tube 15 being too long, while at the same time eliminating the use of conventional straps and reducing the costs of the components.

Preferably, the connection pipe 15 is a flexible pipe. In particular, said connection pipe 15 is formed by a corrugated pipe.

Although the present general inventive concept has been described in conjunction with the embodiments, it will be understood by those skilled in the art that various changes and modifications may be made to the embodiments without departing from the principles and spirit of the general inventive concept.

Claims

1. A fuel pump bracket (1) comprising a first bracket part (11) and a second bracket part (12), the first bracket part (11) being intended to engage a fuel reservoir (3) and having an opening (113) therethrough in the up-down direction, the second bracket part (12) having a hollow cylindrical body for receiving a pump cartridge (2), the hollow cylindrical body extending downwardly below the opening at a distance from the first bracket part (11) and being connected to the first bracket part (11) by an elongate connection, characterized in that the upper edge of the hollow cylindrical body is provided with a baffle (121) extending upwardly, the baffle (121) being configured to be able to abut against the periphery of the opening (113) in a direction perpendicular to the up-down direction.

2. The fuel pump bracket (1) according to claim 1, characterized in that the first bracket portion (11) includes a peripheral wall (111) and a bottom wall (112) perpendicular to the peripheral wall (111), the peripheral wall (111) is configured to match an inner wall of the cartridge (3), and the opening (113) is formed in the bottom wall (112).

3. The fuel pump bracket (1) according to claim 2, characterized in that the baffle (121) extends upwardly such that an upper edge of the baffle (121) passes through the opening (113) and is flush with an upper surface of the bottom wall (112).

4. The fuel pump bracket (1) according to claim 2, characterized in that the baffle (121) extends upwardly such that an upper edge of the baffle (121) passes through the opening (113) and beyond an upper surface of the bottom wall (112) by 1mm to 5 mm.

5. The fuel pump bracket (1) according to one of claims 1 to 4, characterized in that the baffle (121) comprises a plurality of curved baffle elements distributed in the circumferential direction along the upper edge of the hollow cylinder.

6. The fuel pump bracket (1) as claimed in claim 5, characterized in that the baffle element extends flush with the circumferential wall of the hollow cylinder.

7. The fuel pump bracket (1) according to claim 5, characterized in that the elongated connector comprises a plurality of sets of paired legs (14), the plurality of arcuate baffle elements being arranged circumferentially staggered with respect to the sets of paired legs (14).

8. The fuel pump bracket (1) according to claim 7, characterized in that the number of the pairs of legs (14) is three and the number of the baffle elements is three.

9. A fuel pump comprising a pump cartridge (2) and a reservoir (3), characterized in that the fuel pump further comprises a fuel pump holder (1) according to one of claims 1 to 8.

10. Fuel pump according to claim 9, characterized in that the fuel pump carrier (1) further comprises a third carrier part (13), the third carrier part (13) having the form of a sleeve and being intended to receive the fine filter (4).

11. Fuel pump according to claim 10, characterized in that it further comprises a connecting tube (15) for connecting the pump core (2) and the fine filter (4), which connecting tube (15) extends along an L-shaped path between the second bracket part (12) and the third bracket part (13).

12. A fuel pump according to claim 11, characterized in that the connecting tube (15) is formed by a bellows.