Fuel pump assembly without supporting structure

Abstract

The utility model discloses a fuel pump assembly without a supporting structure, which relates to the technical field of fuel pump assemblies and comprises a shell and an upper cover, a connecting seat is fixedly arranged at the bottom of the shell and mounted in a mounting seat, the mounting seat comprises a mounting frame, a thread is arranged on the inner wall of the mounting frame, and the upper cover is arranged on the mounting frame. A mounting ring is fixedly arranged at the bottom of the inner wall of the mounting frame, the connecting base is in threaded connection with the threads, the bottom of the connecting base makes contact with the mounting ring, mounting plates are arranged at the bottom of the mounting frame in an annular array mode, and the mounting frame is fixedly mounted at the inner bottom of the oil tank through the mounting plates. The connecting base is in threaded connection with the spiral threads on the inner wall of the mounting frame, the bottom of the connecting base makes contact with the mounting ring at the bottom of the mounting frame, shaking of the fuel pump in the running process of a vehicle can be effectively limited, the stability of the fuel pump is greatly improved, the fuel pump can work more reliably, and the service life of the fuel pump is prolonged. And part abrasion and performance reduction caused by shaking are reduced.

Description

Technical Field

[0001] This utility model relates to the field of fuel pump assembly technology, specifically a fuel pump assembly without a support structure. Background Technology

[0002] The fuel pump assembly is part of the automotive fuel supply system and is installed in the fuel tank. Its function is to deliver the fuel stored in the fuel tank to the engine. In the existing technology, the overall height of the fuel pump assembly is fixed, and the installation space occupied when installing the fuel pump assembly to the car is also within a fixed range, which reduces the installation efficiency of the fuel pump assembly and reduces its applicable range.

[0003] Chinese utility model patent application number 202420628436.4 discloses a supportless fuel pump assembly. The fuel pump is located below the top cover, and a mounting bracket is fitted over the fuel pump. The fuel pump is connected to the fuel outlet of the top cover via a fuel outlet bellows, and the injection port on the mounting bracket is connected to the fuel inlet of the top cover via a fuel inlet bellows. This eliminates the direct support between the top cover and the fuel pump, thus achieving a supportless structure.

[0004] However, the above-mentioned issues were discovered during equipment use. The fuel pump is only connected to the top cover and mounting bracket via the outlet bellows and the inlet bellows. During vehicle operation, factors such as bumps and vibrations can easily cause the fuel pump to shake, affecting its operational stability. After long-term use, the elasticity of the bellows may change, further reducing the stability of the fuel pump, and may even lead to the failure of the seal between the fuel pump and the connecting parts, resulting in fuel leakage and other problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a fuel pump assembly without a support structure, which solves the problem mentioned in the background technology that the fuel pump is only connected to the top cover and mounting bracket through the outlet bellows and the inlet bellows. During vehicle operation, the fuel pump is prone to shaking due to factors such as bumps and vibrations, which affects its working stability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fuel pump assembly without a support structure, comprising a housing and a top cover, wherein a connecting seat is fixedly disposed at the bottom of the housing, the connecting seat is installed in a mounting base, the mounting base includes a mounting bracket, the inner wall of the mounting bracket is provided with a spiral pattern, a mounting ring is fixedly disposed at the bottom of the inner wall of the mounting bracket, the connecting seat is spirally connected to the spiral pattern, the bottom of the connecting seat is in contact with the mounting ring, and mounting plates are arranged in a ring array at the bottom of the mounting bracket, the mounting bracket is fixedly installed in the bottom of the fuel tank by bolts through the mounting plates.

[0007] Preferably, the mounting bracket has a circumferentially circumferentially formed limiting groove.

[0008] Preferably, connecting frames are fixedly provided on both the left and right sides of the outer casing, and rotating frames are provided on the connecting frames.

[0009] Preferably, a limiting frame is rotatably installed in the rotating frame, the top of the limiting frame is provided with an inclined pressure plate, the inner side of the pressure plate is connected to the connecting frame by a spring, and a limiting plate is fixedly provided at the lower end of the limiting frame.

[0010] Preferably, the limiting frame and the limiting plate form an L-plate, the limiting plate corresponds to the limiting groove, and the top of the limiting plate is in contact with the top of the limiting groove.

[0011] This utility model provides a fuel pump assembly without a support structure. It has the following advantages:

[0012] (1) The present invention is connected to the inner wall of the mounting bracket by the spiral pattern of the connecting seat and the mounting ring at the bottom of the mounting bracket. This can effectively limit the shaking of the fuel pump during vehicle operation, greatly improve the stability of the fuel pump, enable it to work more reliably, and reduce the wear and performance degradation of components caused by shaking.

[0013] (2) In this utility model, after the fuel pump assembly is installed, the limiting plate is inserted into the limiting groove, which restricts the relative rotation between the connecting seat and the mounting bracket. Even if the vehicle vibrates during driving, the connecting seat is difficult to rotate on the spiral due to the cooperation between the limiting plate and the limiting groove, thereby avoiding loosening of the threads caused by vibration and further making the operation of the fuel pump more stable. Attached Figure Description

[0014] Figure 1 This is a diagram showing the overall structure of the present utility model;

[0015] Figure 2 This utility model Figure 1 Structural diagram of the inner and outer shell;

[0016] Figure 3 This utility model Figure 2 An enlarged schematic diagram of part A in the middle;

[0017] Figure 4 This utility model Figure 1 A structural diagram of the mounting base.

[0018] In the diagram, 1 is the outer casing; 11 is the connecting seat; 12 is the connecting frame; 121 is the rotating frame; 13 is the limiting frame; 131 is the pressure plate; 132 is the limiting plate; and 14 is the spring.

[0019] 2. Top cover;

[0020] 3. Mounting base; 31. Mounting bracket; 32. Mounting plate; 33. Spiral pattern; 34. Limiting groove; 35. Mounting ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: Please refer to Figures 1-4 This utility model provides a fuel pump assembly without a support structure, including a housing 1 and a top cover 2. A connecting seat 11 is fixedly provided at the bottom of the housing 1. The connecting seat 11 is installed in a mounting seat 3. The mounting seat 3 includes a mounting bracket 31. The inner wall of the mounting bracket 31 is provided with a spiral pattern 33. A mounting ring 35 is fixedly provided at the bottom of the inner wall of the mounting bracket 31. The connecting seat 11 is spirally connected to the spiral pattern 33. The bottom of the connecting seat 11 is in contact with the mounting ring 35. A mounting plate 32 is arranged in a ring array at the bottom of the mounting bracket 31. The mounting bracket 31 is fixedly installed in the bottom of the fuel tank by bolts through the mounting plate 32.

[0023] The mounting bracket 31 has a circumferentially ...

[0024] A connecting frame 12 is fixedly installed on both the left and right sides of the outer casing 1, and a rotating frame 121 is installed on the connecting frame 12;

[0025] A limiting frame 13 is rotatably installed in the rotating frame 121. An inclined pressure plate 131 is provided on the top of the limiting frame 13. The inner side of the pressure plate 131 is connected to the connecting frame 12 by a spring 14. A limiting plate 132 is fixedly provided at the lower end of the limiting frame 13.

[0026] The limiting frame 13 and the limiting plate 132 form an L-plate. The limiting plate 132 corresponds to the limiting groove 34, and the top of the limiting plate 132 is in contact with the top of the limiting groove 34.

[0027] Specifically, the mounting bracket 31 is fixed to the bottom of the fuel tank with bolts through the mounting plates 32 arranged in a ring at its bottom, providing a stable mounting base for the entire fuel pump assembly and ensuring that it will not be displaced due to shaking, bumps or other factors during vehicle operation. Then, the user presses the pressure plate 131, causing the limiting bracket 13 to rotate around the rotating bracket 121, while compressing the spring 14, so that the limiting plate 132 moves away from the outer shell 1. The connecting seat 11 at the bottom of the fuel pump outer shell 1 is spirally connected to the spiral pattern 33 on the inner wall of the mounting bracket 31. The bottom of the connecting seat 11 contacts the mounting ring 35 fixedly arranged at the bottom of the inner wall of the mounting bracket 31, thus completing the initial fixation of the fuel pump outer shell 1 in the mounting bracket 31.

[0028] Finally, after the fuel pump housing 1 is installed in place, the pressure plate 131 is released, and the limiting bracket 13 rotates in the opposite direction under the action of the spring 14. At the same time, the limiting plate 132 is engaged in the limiting groove 34, further restricting the movement of the fuel pump housing 1 in the vertical direction. Combined with the spiral connection, the rotation of the housing 1 is also prevented, thus realizing the all-round installation and fixation of the fuel pump housing 1. This effectively enhances the stability of the fuel pump during operation, reduces the shaking of the fuel pump caused by factors such as vehicle vibration, and thus improves its working stability and reliability. At the same time, the top cover 2 is installed on the fuel tank, realizing the installation of the fuel pump assembly without support structure.

[0029] By pressing the pressure plate 131 to move the limiting plate 132 away from the housing 1, after the fuel pump housing 1 is installed in place, the pressure plate 131 is released, and the limiting plate 132 can quickly snap into the limiting groove 34 under the action of the spring 14, achieving precise positioning. Without additional tools or complicated adjustment processes, the movement of the fuel pump housing 1 in the vertical direction can be further restricted and its rotation can be prevented, thus completing all-round fixation and improving installation efficiency.

[0030] Working principle: First, the mounting bracket 31 is fixed to the bottom of the fuel tank by bolts through the mounting plate 32 arranged in a ring at its bottom. When the user presses the pressure plate 131, the limiting bracket 13 rotates around the rotating bracket 121. At the same time, the spring 14 is compressed, so that the limiting plate 132 moves away from the outer shell 1, making room for the installation of the fuel pump outer shell 1.

[0031] The connecting seat 11 at the bottom of the fuel pump housing 1 is spirally connected to the spiral thread 33 on the inner wall of the mounting bracket 31 until the bottom of the connecting seat 11 contacts the mounting ring 35 fixedly installed at the bottom of the inner wall of the mounting bracket 31. This completes the initial fixation of the fuel pump housing 1 within the mounting bracket 31. After the fuel pump housing 1 is installed in place, the pressure plate 131 is released, and the limiting bracket 13 rotates in the opposite direction under the action of the spring 14, causing the limiting plate 132 to engage with the limiting groove 34. This step further restricts the vertical movement of the fuel pump housing 1. Combined with the previous spiral connection, it prevents the housing 1 from rotating, achieving omnidirectional installation and fixation of the fuel pump housing 1. This enhances the stability of the fuel pump during operation, reduces fuel pump shaking caused by vehicle vibration, and improves its working stability and reliability.

[0032] After the fuel pump housing 1 is installed and secured, the top cover 2 is installed on the fuel tank. This completes the installation of the unsupported fuel pump assembly. Once installed, the fuel pump assembly is ready for use. The fuel pump begins operating, drawing fuel from the fuel tank and delivering it to the engine and other components that require fuel, providing power for the vehicle's operation. During vehicle operation, thanks to the stable installation structure described above, the fuel pump can operate continuously and stably, unaffected by factors such as vehicle vibration.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fuel pump assembly without a support structure, comprising a housing (1) and a top cover (2), characterized in that: A connecting seat (11) is fixedly provided at the bottom of the outer shell (1). The connecting seat (11) is installed in the mounting seat (3). The mounting seat (3) includes a mounting frame (31). The inner wall of the mounting frame (31) is provided with a spiral pattern (33). A mounting ring (35) is fixedly provided at the bottom of the inner wall of the mounting frame (31). The connecting seat (11) is spirally connected to the spiral pattern (33). The bottom of the connecting seat (11) is in contact with the mounting ring (35). A mounting plate (32) is arranged in a ring array at the bottom of the mounting frame (31). The mounting frame (31) is fixedly installed at the bottom of the oil tank by bolts through the mounting plate (32).

2. The fuel pump assembly without a support structure according to claim 1, characterized in that: The mounting bracket (31) has a circumferentially ...

3. The fuel pump assembly without a support structure according to claim 2, characterized in that: A connecting frame (12) is fixedly installed on both the left and right sides of the outer shell (1), and a rotating frame (121) is installed on the connecting frame (12).

4. The fuel pump assembly without a support structure according to claim 3, characterized in that: The rotating frame (121) is rotatably mounted with a limiting frame (13). The top of the limiting frame (13) is provided with an inclined pressure plate (131). The inner side of the pressure plate (131) is connected to the connecting frame (12) by a spring (14). The lower end of the limiting frame (13) is fixedly provided with a limiting plate (132).

5. The fuel pump assembly without a support structure according to claim 4, characterized in that: The limiting frame (13) and the limiting plate (132) form an L-plate. The limiting plate (132) corresponds to the limiting groove (34), and the top of the limiting plate (132) is in contact with the top of the limiting groove (34).

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