Support-free fuel pump assembly

Abstract

The utility model provides a support-free fuel pump assembly, which is characterized by comprising an upper cover, a lower cover, a fuel pump and a fuel pump, the fuel pump is positioned below the upper cover; the mounting frame is arranged outside the fuel pump in a sleeving manner; a liquid outlet corresponding to an outlet of the fuel pump is formed in the mounting frame, an oil outlet corrugated pipe is arranged between the fuel pump and an oil outlet head of the upper cover, an injection connector is further arranged on the mounting frame, an oil inlet corrugated pipe is arranged between the injection connector and an oil inlet head of the upper cover, and no supporting structure is arranged between the upper cover and the fuel pump. The upper cover and the fuel pump are connected without a supporting structure, so that the mounting position of the upper cover in the fuel tank can be freely adjusted, and the application range is widened.

Description

Technical Field

[0001] The utility model relates to an unsupported fuel pump assembly. Background Art

[0002] The fuel pump assembly is part of the vehicle's fuel supply system. It is installed in the fuel tank and its function is to deliver the fuel stored in the fuel tank to the engine.

[0003] In the prior art, the overall height of the fuel pump assembly is fixed. When the fuel pump assembly is installed on a vehicle, the installation space occupied is also within a fixed range, which reduces the installation efficiency of the fuel pump assembly and reduces its scope of application. Utility Model Content

[0004] The purpose of the utility model is to address the above-mentioned problems in the prior art and to propose an unsupported fuel pump assembly. In the present application, there is no supporting structure connection between the upper cover and the fuel pump, so that the installation position of the upper cover on the fuel tank can be freely adjusted to improve the scope of application.

[0005] The purpose of the utility model can be achieved through the following technical solutions: an unsupported fuel pump assembly, characterized in that it includes:

[0006] An upper cover having an oil outlet and an oil inlet;

[0007] The fuel pump, which is located under the upper cover;

[0008] A mounting bracket, which is sleeved on the outside of the fuel pump;

[0009] A liquid outlet is arranged on the mounting frame corresponding to the outlet of the fuel pump, an oil outlet bellows is arranged between the fuel pump and the oil outlet head of the upper cover, an injection interface is also arranged on the mounting frame, an oil inlet bellows is arranged between the injection interface and the oil inlet head of the upper cover, and there is no supporting structure between the upper cover and the fuel pump.

[0010] Furthermore, a wire plug is provided between the upper cover and the fuel pump.

[0011] Furthermore, both ends of the oil outlet bellows and the oil inlet bellows are provided with quick connectors.

[0012] Furthermore, an oil outlet plug-in end is provided at the lower end of the upper cover corresponding to the oil outlet head, and the quick connector at one end of the oil outlet bellows is plugged into the oil outlet plug-in end.

[0013] Furthermore, an oil inlet plug-in end is provided at the lower end of the upper cover corresponding to the oil inlet head, and the quick connector at one end of the oil inlet bellows is plugged into the oil inlet plug-in end.

[0014] Furthermore, the other end of the oil inlet bellows is connected to the injection interface, and the other end of the oil outlet bellows is connected to the fuel pump through the liquid outlet, and a clamp is inserted at the injection interface and the liquid outlet of the mounting frame.

[0015] Furthermore, the mounting frame is provided with a one-way valve corresponding to the fuel pump and the oil outlet bellows, and a pressure relief valve is provided at the injection interface of the mounting frame.

[0016] Furthermore, an oil return plastic part is provided at the lower end of the injection interface.

[0017] Compared with the prior art, the advantages of the present application are as follows: in the present application, there is no supporting structure connection between the upper cover and the fuel pump, so that the installation position of the upper cover on the fuel tank can be freely adjusted to improve the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the fuel pump assembly;

[0019] Figure 2 It is a schematic diagram of the upper cover;

[0020] Figure 3 This is a schematic diagram of the fuel pump assembly from another perspective;

[0021] Figure 4 This is a schematic diagram of the fuel pump assembly without the upper cover;

[0022] In the figure, 1. upper cover; 11. oil outlet head; 1101. oil outlet plug end; 12. oil inlet head; 1201. oil inlet plug end; 13. oil outlet bellows; 131. quick connector; 14. oil inlet bellows; 15. wire plug; 2. mounting frame; 201. liquid outlet; 202. clamp; 21. one-way valve; 22. pressure relief valve; 23. injection interface; 231. oil return plastic part; 3. fuel pump. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention.

[0024] like Figure 1-4 As shown, an unsupported fuel pump 3 assembly is characterized in that it includes:

[0025] The upper cover 1 has an oil outlet 11 and an oil inlet 12;

[0026] A fuel pump 3, which is located below the upper cover 1;

[0027] A mounting frame 2, which is sleeved on the outside of the fuel pump 3;

[0028] A liquid outlet 201 is provided on the mounting frame 2 corresponding to the outlet of the fuel pump 3, an oil outlet bellows 13 is provided between the fuel pump 3 and the oil outlet head 11 of the upper cover 1, an injection interface 23 is also provided on the mounting frame 2, an oil inlet bellows 14 is provided between the injection interface 23 and the oil inlet head 12 of the upper cover 1, and there is no supporting structure between the upper cover 1 and the fuel pump 3.

[0029] Furthermore, a wire plug 15 is provided between the upper cover 1 and the fuel pump 3.

[0030] Furthermore, both ends of the oil outlet bellows 13 and the oil inlet bellows 14 are provided with quick connectors 131 .

[0031] Furthermore, an oil outlet plug-in end 1101 is provided at the lower end of the upper cover 1 corresponding to the oil outlet head 11 , and a quick connector 131 at one end of the oil outlet bellows 13 is plugged into the oil outlet plug-in end 1101 .

[0032] Furthermore, an oil inlet plug-in end 1201 is provided at the lower end of the upper cover 1 corresponding to the oil inlet head 12 , and the quick connector 131 at one end of the oil inlet bellows 14 is plugged into the oil inlet plug-in end 1201 .

[0033] Furthermore, the other end of the oil inlet bellows 14 is connected to the injection interface 23, and the other end of the oil outlet bellows 13 is connected to the fuel pump 3 through the liquid outlet 201. A clamp 202 is inserted at the injection interface 23 and the liquid outlet 201 of the mounting frame 2. After the quick connector 131 is installed, the quick connector 131 is fixed by inserting the clamp 202 at the connection of the mounting frame 2.

[0034] Furthermore, the mounting frame 2 is provided with a one-way valve 21 corresponding to the fuel pump 3 and the oil outlet bellows 13 , and a pressure relief valve 22 is provided at the injection interface 23 of the mounting frame 2 .

[0035] Furthermore, an oil return plastic part 231 is provided at the lower end of the injection interface 23 .

[0036] Principle: In the present application, the internal oil is pumped upward by the fuel pump 3 and sprayed out through the oil outlet head 11 for use. The oil above the upper cover 1 can flow back downward through the oil inlet head 12, through the injection interface 23, and then return to the fuel tank from the oil return plastic part 231. In the present application, there is no supporting guide rod structure of the prior art between the upper cover 1 and the fuel pump 3, so that the upper cover 1 can be freely adjusted to the installation position in the fuel tank. At the same time, quick connectors 131 are provided at both ends of the oil outlet bellows 13 and the oil inlet bellows 14, and the two can be quickly pulled and installed between the upper cover 1, the injection interface 23 and the fuel pump 3. The injection interface 23 and the oil return plastic part 231 form an oil return path, and a pressure relief valve 22 is provided to ensure that the injection mechanism works under a certain pressure. The fuel pump 3 and the oil outlet bellows 13 form an oil outlet path, and a one-way valve 21 is provided to maintain the residual pressure of the system to ensure the need to restart the engine.

[0037] The technical solution of the above utility model provides a solution that is significantly different from the prior art to address the technical problem that the prior art solution is too single. The parts not involved in the technical solution of this application are the same as the prior art or can be implemented by using the prior art and will not be described in detail.

[0038] The technical solutions in the above embodiments have clearly and completely described the contents of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. An unsupported fuel pump assembly, characterized in that: It includes: An upper cover having an oil outlet and an oil inlet; The fuel pump, which is located under the upper cover; A mounting bracket, which is sleeved on the outside of the fuel pump; A liquid outlet is arranged on the mounting frame corresponding to the outlet of the fuel pump, an oil outlet bellows is arranged between the fuel pump and the oil outlet head of the upper cover, an injection interface is also arranged on the mounting frame, an oil inlet bellows is arranged between the injection interface and the oil inlet head of the upper cover, and there is no supporting structure between the upper cover and the fuel pump.

2. The unsupported fuel pump assembly according to claim 1, characterized in that: A wire plug is arranged between the upper cover and the fuel pump.

3. The unsupported fuel pump assembly according to claim 1, characterized in that: Both ends of the oil outlet bellows and the oil inlet bellows are provided with quick connectors.

4. The unsupported fuel pump assembly according to claim 3, characterized in that: An oil outlet plug-in end is provided at the lower end of the upper cover corresponding to the oil outlet head, and the quick connector at one end of the oil outlet bellows is plugged into the oil outlet plug-in end.

5. The unsupported fuel pump assembly according to claim 4, characterized in that: An oil inlet plug-in end is provided at the lower end of the upper cover corresponding to the oil inlet head, and the quick connector at one end of the oil inlet bellows is plugged into the oil inlet plug-in end.

6. The unsupported fuel pump assembly according to claim 5, characterized in that: The other end of the oil inlet bellows is connected to the injection interface, and the other end of the oil outlet bellows is connected to the fuel pump through the liquid outlet. A clamp is inserted at the injection interface and the liquid outlet of the mounting frame.

7. The unsupported fuel pump assembly according to claim 6, characterized in that: The mounting frame is provided with a one-way valve corresponding to the fuel pump and the oil outlet bellows, and a pressure relief valve is provided at the injection interface of the mounting frame.

8. The unsupported fuel pump assembly according to claim 7, characterized in that: An oil return plastic part is arranged at the lower end of the injection interface.

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