Fuel pump support assembly pressure valve plastic seat convenient to disassemble, assemble and replace

Abstract

The utility model discloses a fuel pump support assembly pressure valve plastic seat convenient to disassemble, assemble and replace, and relates to the technical field of fuel pump support assembly parts, the fuel pump support assembly pressure valve plastic seat comprises a pump core support, a plastic seat and a pressure regulating valve, the pump core support is detachably connected with the plastic seat, the plastic seat is detachably connected with the pressure regulating valve, and the pressure regulating valve is detachably connected with the pump core support. A mounting hole is formed in the pump core support, a plurality of elastic buckles are arranged in the circumferential direction of the mounting hole, I-shaped clamping blocks corresponding to the elastic buckles are arranged on the outer side of the plastic base, and a guide inclined face used for guiding during disassembly and assembly is arranged in the middle of each I-shaped clamping block. The device is convenient and labor-saving to disassemble and assemble, and is not easy to damage after being disassembled and assembled for

Description

Technical Field

[0001] The utility model relates to the technical field of fuel pump bracket assembly parts, in particular to a fuel pump bracket assembly pressure valve plastic seat which is easy to disassemble, assemble and replace. Background Art

[0002] The automobile fuel pump assembly is one of the basic components of the automobile fuel injection system. Its function is to suck fuel out of the fuel tank and the fuel pressure regulating valve cooperates synchronously to establish a certain fuel pressure. After pressurization, the fuel is delivered to the fuel supply pipeline for the normal operation of the engine.

[0003] The pressure regulating valve of most existing models is installed in the fuel pump bracket assembly of the single oil outlet pipeline. The pressurized fuel is delivered to the fuel supply pipeline according to the rated pressure requirement to meet the normal operation of the engine. The excess fuel is released by the pressure regulating valve and returned to the gasoline tank. Due to space limitations and other factors, some models cannot be equipped with a pressure regulating valve on the oil outlet pipeline. If a pressure regulating valve is not installed on the oil outlet rail of the car, the engine will not work properly. Therefore, a pressure regulating valve must be installed in the return oil pipeline of the fuel pump bracket assembly to stabilize the pressure and release pressure. Figure 1 The figure shows an existing fuel pump bracket assembly for a return oil pipeline, including a pump core bracket 1, a mounting hole is provided on the pump core bracket 1, and a plurality of elastic buckles are provided around the mounting hole, and a filter assembly 101 is fixedly installed by the elastic buckles. If a pressure regulating valve is to be installed, the pump core bracket needs to be redesigned, which has the problems of high mold opening cost and not being widely used. The current conventional practice is to design a pressure valve plastic seat without changing the original pump core bracket structure, and replace the filter assembly in the original position with a pressure valve plastic seat when a pressure regulating valve needs to be installed to ensure the normal operation of the engine. The existing pressure valve plastic seat has the problem of being difficult to disassemble and assemble with the pump core bracket, and being easily damaged after multiple disassembly and assembly. Summary of the invention

[0004] In view of the deficiencies of the prior art, the utility model provides a plastic seat for a pressure valve of a fuel pump bracket assembly which is easy to disassemble, assemble and replace.

[0005] The technical solution provided by the utility model is:

[0006] A fuel pump bracket assembly pressure valve plastic seat that is easy to disassemble, assemble and replace, comprises a pump core bracket, a plastic seat and a pressure regulating valve, wherein the pump core bracket and the plastic seat are detachably connected to each other, and the plastic seat and the pressure regulating valve are detachably connected to each other, a mounting hole is provided on the pump core bracket, a plurality of elastic buckles are circumferentially provided on the mounting hole, an I-shaped clamping block is provided on the outer side of the plastic seat corresponding to the elastic buckle, and a guiding inclined surface is provided in the middle of the I-shaped clamping block for guiding during disassembly and assembly.

[0007] The mounting hole is provided with a limiting groove corresponding to the elastic buckle position, and the outer side of the plastic seat is provided with a limiting protrusion corresponding to the limiting groove.

[0008] A fir oil nozzle is arranged at the upper end of the plastic seat, and the fir oil nozzle is eccentrically arranged.

[0009] The plastic seat is provided with an installation groove for installing the pressure regulating valve, and the installation groove includes a first inner diameter section and a second inner diameter section. The first inner diameter section is in a gap fit with the sealing edge of the pressure regulating valve, and the second inner diameter section is in an interference fit with the O-ring of the pressure regulating valve.

[0010] A step surface for installation and positioning is provided between the first inner diameter section and the second inner diameter section.

[0011] The first inner diameter section is provided with a fixing mechanism for fixing the pressure regulating valve, and the fixing mechanism includes a limiting groove provided on the surface of the plastic seat and a steel wire buckle for inserting into the limiting groove and clamping the pressure regulating valve.

[0012] A disassembly groove for providing a fulcrum for disassembling the pressure regulating valve is provided on the side of the limiting groove.

[0013] It also includes a grounding plug, and a grounding plug installation groove is provided on the side of the plastic seat.

[0014] The beneficial effects of the utility model are as follows: an I-shaped block is arranged on the outer side of the plastic seat. After the I-shaped block is buckled with the elastic buckle of the pump core bracket, due to the I-shaped structure, there is a gap between the I-shaped block and the elastic buckle, which is convenient for leveraging during disassembly and easy disassembly. A guide slope is arranged in the middle of the I-shaped block to provide guidance for the I-shaped block during disassembly and assembly, which makes disassembly and assembly more labor-saving and less prone to damage, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an existing fuel return pipeline fuel pump bracket assembly;

[0016] Figure 2 This is a schematic diagram of the explosion structure of an embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the assembly of an embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the plastic seat of the embodiment of the utility model;

[0019] Figure 5 This is a structural schematic diagram of the plastic seat of the utility model embodiment from another angle;

[0020] Figure 6 It is a schematic diagram of the cross-sectional structure of the plastic seat according to the embodiment of the utility model. DETAILED DESCRIPTION

[0021] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0022] like Figure 2 As shown, a fuel pump bracket assembly pressure valve plastic seat that is easy to disassemble, assemble and replace includes a pump core bracket 1, a wire buckle 2, a pressure regulating valve 3, a plastic seat 4, a grounding plug 5, and a bellows 6.

[0023] like Figure 2-5 As shown, the pump core bracket 1 and the plastic seat 4 are detachably connected to each other, and a mounting hole 11 is provided on the pump core bracket 1, and a plurality of elastic buckles 13 are provided around the mounting hole 11. An I-shaped block 43 is provided on the outer side of the plastic seat 4 corresponding to the elastic buckle 13, and a guide slope 44 is provided in the middle of the I-shaped block 43. During installation, the plastic seat 4 is buckled down corresponding to the mounting hole 11 of the pump core bracket 1, so that the I-shaped block 45 is limited to the elastic buckle 13. Due to the guiding effect of the guide slope 44, it is more labor-saving when buckling, and it is not easy to damage the elastic buckle 13; during disassembly, since there is a gap between the I-shaped block 43 and the elastic buckle 13, a screwdriver or other tool can be inserted into the gap to pry the I-shaped block 43 away from the elastic buckle 13, and lifted upward to complete the disassembly, which is convenient for disassembly and assembly.

[0024] Furthermore, a limiting groove 12 is provided at the position of the mounting hole 11 corresponding to the elastic buckle 13, and a limiting protrusion 42 is provided at the outer side of the plastic seat 4 corresponding to the limiting groove 12, and the limiting protrusion 42 cooperates with the limiting groove 12 to limit the position, so that the plastic seat 4 will not rotate after installation. Furthermore, a plurality of positioning ribs 46 are provided around the plastic seat 4, and the positioning ribs 46 cooperate with the mounting hole 11 to ensure that the plastic seat 4 is firm and reliable after installation.

[0025] In this embodiment, the plastic seat 4 and the pressure regulating valve 3 are detachably connected to each other. Figure 5-6As shown, the plastic seat 4 is provided with an installation groove for installing the pressure regulating valve 3, and the installation groove includes a first inner diameter section 21 and a second inner diameter section 22. The first inner diameter section 21 and the sealing edge of the pressure regulating valve 3 are in a clearance fit, and the second inner diameter section 22 and the O-ring of the pressure regulating valve 3 are in an interference fit, which plays a role in sealing the fuel pipeline. A step surface 23 is provided between the first inner diameter section 21 and the second inner diameter section 22. The step surface 23 can limit the assembly depth of the sealing edge of the pressure regulating valve 3, play a positioning role, and is also beneficial to the plastic seat 4 and the pressure regulating valve 3 is better sealed and connected, which can effectively avoid the phenomenon of fuel leakage caused by the movement of the O-ring. The first inner diameter section 21 is provided with a limiting groove 47. After the pressure regulating valve 3 is assembled in place, the steel wire buckle 2 is aligned with the limiting groove and pushed to tighten the pressure regulating valve 3 to complete the installation. When disassembling and replacing the pressure regulating valve 3, the steel wire buckle 6 is disassembled and removed with a tool, and the pressure regulating valve 3 can be pushed outward and taken out. It is convenient and fast, easy to install and maintain, and has low requirements on workers' operating skills during production assembly, maintenance and replacement, and is easy to use and easy to reverse.

[0026] Furthermore, since the pressure regulating valve 3 and the plastic seat 4 are sealed together, after the medium such as gasoline flows through, the internal matching gap is filled with the medium to form a vacuum, which makes disassembly difficult. In this embodiment, a disassembly groove 48 is provided on the side of the limiting groove 47 to provide a fulcrum for disassembly tools such as a screwdriver during disassembly, thereby facilitating disassembly.

[0027] In order to make the plastic seat 3 suitable for the oil return pipeline of the fuel pump bracket assembly, a cedar oil nozzle 41 is provided at the upper end of the plastic seat 3. In the oil return pipeline, the top cover component of the fuel pump bracket assembly is connected to the cedar oil nozzle 41 through a bellows 6. After the fuel medium passes through the cedar oil nozzle 41, it is depressurized through the pressure regulating valve 3 and returns to the oil storage barrel of the fuel pump bracket assembly. In this embodiment, the cedar oil nozzle 41 is eccentrically arranged. Since there are multiple elastic clips 13 circumferentially around the mounting hole 11, the plastic seat 3 can be installed at different angles to change the position of the cedar oil nozzle 41 to adapt to different oil return pipelines.

[0028] In this embodiment, a grounding plug installation groove 46 is provided on the side of the plastic seat 4. After the grounding plug 5 is installed on the plastic seat 4, the grounding plug remains in continuous contact with the pressure regulating valve 3 to play a grounding role. The grounding plug installation groove 46 surrounds the grounding plug 5 to protect it and ensure that the grounding plug 5 is not easy to fall off after installation.

[0029] The embodiments should not be regarded as limiting the present invention, and any non-creative improvements made based on the spirit of the present invention should be regarded as falling within the protection scope of the present invention.

Claims

1. A fuel pump bracket assembly pressure valve plastic seat that is easy to disassemble, assemble and replace, comprising a pump core bracket, a plastic seat, and a pressure regulating valve, wherein the pump core bracket and the plastic seat are detachably connected to each other, and the plastic seat and the pressure regulating valve are detachably connected to each other, and a mounting hole is provided on the pump core bracket, and a plurality of elastic buckles are provided around the mounting hole, and the characteristics are as follows: An I-shaped clamping block is arranged on the outer side of the plastic seat corresponding to the elastic clamping buckle, and a guiding inclined surface for guiding during disassembly and assembly is arranged in the middle of the I-shaped clamping block.

2. The plastic seat for the pressure valve of the fuel pump bracket assembly that is easy to disassemble, assemble and replace according to claim 1, characterized in that: The mounting hole is provided with a limiting groove corresponding to the elastic buckle position, and the outer side of the plastic seat is provided with a limiting protrusion corresponding to the limiting groove.

3. The plastic seat for the pressure valve of the fuel pump bracket assembly that is easy to disassemble, assemble and replace according to claim 1, characterized in that: A fir oil nozzle is arranged at the upper end of the plastic seat, and the fir oil nozzle is eccentrically arranged.

4. The plastic seat for the pressure valve of the fuel pump bracket assembly that is easy to disassemble, assemble and replace according to claim 1, characterized in that: The plastic seat is provided with an installation groove for installing the pressure regulating valve, and the installation groove includes a first inner diameter section and a second inner diameter section. The first inner diameter section is in a gap fit with the sealing edge of the pressure regulating valve, and the second inner diameter section is in an interference fit with the O-ring of the pressure regulating valve.

5. The plastic seat for the pressure valve of the fuel pump bracket assembly that is easy to disassemble, assemble and replace according to claim 4, characterized in that: A step surface for installation and positioning is provided between the first inner diameter section and the second inner diameter section.

6. The plastic seat for the pressure valve of the fuel pump bracket assembly that is easy to disassemble, assemble and replace according to claim 4, characterized in that: The first inner diameter section is provided with a fixing mechanism for fixing the pressure regulating valve, and the fixing mechanism includes a limiting groove provided on the surface of the plastic seat and a steel wire buckle for inserting into the limiting groove and clamping the pressure regulating valve.

7. The plastic seat for the pressure valve of the fuel pump bracket assembly that is easy to disassemble, assemble and replace according to claim 6, characterized in that: A disassembly groove for providing a fulcrum for disassembling the pressure regulating valve is provided on the side of the limiting groove.

8. The plastic seat for the pressure valve of the fuel pump bracket assembly that is easy to disassemble, assemble and replace according to claim 1, characterized in that: It also includes a grounding plug, and a grounding plug installation groove is provided on the side of the plastic seat.

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