A gasoline pump assembly
By using a reinforcing component in the fuel pump assembly, the problem of loose connecting pipes was solved, enabling stable fuel delivery under vibration conditions, preventing fuel leakage and pressure drop, and improving the system's vibration resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG KANGSONG POWER TECH CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-05-29
AI Technical Summary
During long-term vehicle operation, existing electric fuel pump assemblies may experience fuel leaks or reduced fuel supply pressure due to road bumps or engine vibrations at the connection points of the pipes, affecting fuel delivery efficiency and even causing the engine to stall.
The system employs a reinforced assembly, including first and second connecting sections, an arc plate, a second spring, and a compression plate. By holding the lever, the connecting sections are reset to form a continuous radial preload, which dynamically absorbs impact energy. The limiting block provides rigid constraint under critical vibration and impact conditions, preventing excessive compression of the spring.
It effectively suppresses connection loosening, eliminates interface fretting wear, ensures stable preload, prevents fuel leakage, and improves fuel delivery efficiency and system stability.
Smart Images
Figure CN224300995U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gasoline pump assembly technology, specifically a gasoline pump assembly. Background Technology
[0002] The fuel pump assembly is a core component of a car's fuel system, responsible for delivering fuel from the fuel tank to the engine and ensuring stable fuel pressure to meet injection requirements. Modern vehicles typically use electric fuel pump assemblies, which are integrated inside the fuel tank. Existing electric fuel pump assemblies mainly consist of a fuel cup, an electric fuel pump, a fuel pump bracket, a fuel level sensor, and connecting pipes.
[0003] When the existing electric fuel pump assembly is working, the electric fuel pump draws fuel from the fuel cup, delivers it to the fuel pump bracket through the connecting pipe, and finally supplies fuel to the engine through the fuel outlet pipe of the bracket. The two ends of the connecting pipe are fixed to the fuel pump outlet and the fuel pump bracket inlet respectively by plugging. However, during long-term vehicle operation, if the vehicle is continuously subjected to road bumps or vibrations caused by engine vibration, the plugging of the connecting pipe may gradually loosen. This loosening will damage the seal, causing fuel leakage or a drop in fuel supply pressure, directly affecting the fuel delivery efficiency, and in severe cases, even causing the engine to stall. Utility Model Content
[0004] The purpose of this utility model is to provide a gasoline pump assembly that solves the problem that the connection points of the connecting pipes may gradually loosen during long-term vehicle operation if the vehicle is subjected to continuous road bumps or engine vibrations.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to a gasoline pump assembly, including a fuel cup. An electric fuel pump is installed inside the fuel cup, and a fuel level sensor is installed on the outside of the fuel cup. A connecting rod is slidably connected to the upper end of the fuel cup, and a fuel pump bracket is installed on the upper end of the connecting rod. A first spring is sleeved on the outside of the connecting rod. One end of the first spring is fixed to the upper end of the fuel cup, and the other end of the first spring is fixed to the lower end of the fuel pump bracket. A connecting pipe is inserted into the outlet of the electric fuel pump, and the other end of the connecting pipe is inserted into the inlet of the fuel pump bracket. Reinforcing components are provided at both ends of the connecting pipe. The reinforcing components include a first connecting section with an opening at one end and a second connecting section partially embedded in the opening. Mounting grooves are provided on the inner sides of both the first and second connecting sections. An arc-shaped plate is provided in each mounting groove. A second spring is connected to the outer side of each arc-shaped plate, and a pressing plate is connected to the outer end of each second spring. The inner side of each pressing plate abuts against the outer side of the connecting pipe.
[0007] Furthermore, the first connecting segment, the second connecting segment, and the extrusion plate are all arc-shaped structures. When the first connecting segment and the second connecting segment are closed, they cooperate to form a ring. The end of the first connecting segment is provided with a first lever, and the end of the second connecting segment is provided with a second lever.
[0008] Furthermore, both the first connecting segment and the second connecting segment have through holes on their outer sides, each through hole communicating with a corresponding mounting groove, and each arc plate has a connecting block fixed on its outer side, each connecting block passing through the corresponding through hole and snapping onto the outer side of the first connecting segment and the second connecting segment.
[0009] Furthermore, both the arc-shaped plate and the extrusion plate are provided with limiting blocks on their outer sides, and the two limiting blocks are arranged facing each other.
[0010] Furthermore, the outer side of the first connecting segment is provided with reinforcing ribs.
[0011] Furthermore, the inner side of the extrusion plate is provided with anti-slip texture.
[0012] This utility model has the following beneficial effects:
[0013] (1) By holding the first lever and prying the second lever outward, the second connecting section is disengaged from the opening of the first connecting section. Then, the connecting pipe is attached to the inner side of the extrusion plate. Finally, the second lever is released, so that the first connecting section and the second connecting section are elastically reset and closed. The second spring is radially compressed at the same time, so that the second spring pushes the extrusion plate to press tightly against the outer wall of the connecting pipe, forming a continuous radial preload. Under vibration conditions, the second spring absorbs the impact energy through dynamic deformation, so that the anti-slip texture of the extrusion plate always bites the surface of the pipe, eliminating the interface fretting wear, suppressing the loosening of the connection caused by long-term shaking from the root, and achieving a good reinforcement effect.
[0014] (2) This utility model uses two opposing limit blocks to form a dynamic stroke safety mechanism. When the vibration and impact cause the second spring to be compressed to the critical state, the limit blocks make hard contact before the second spring is completely crushed, forming a rigid constraint, avoiding excessive compression of the second spring and causing plastic deformation, and ensuring the preload is stable for a long time.
[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 Exploded view of the electric oil pump, connecting pipelines, reinforcement components and oil pump support structure;
[0019] Figure 3 Schematic diagram of the reinforced component structure;
[0020] Figure 4 A schematic diagram of the structure of the arc-shaped plate, the second spring, the extrusion plate, the connecting block and the limiting block;
[0021] The attached diagram lists the components represented by each number as follows:
[0022] In the diagram: 1. Oil cup; 2. Electric oil pump; 3. Oil level sensor; 4. Connecting rod; 5. Oil pump bracket; 6. First spring; 7. Connecting pipeline; 8. Reinforcing component; 801. First connecting section; 8011. First lever; 8012. Reinforcing rib; 802. Second connecting section; 8021. Second lever; 803. Arc plate; 804. Second spring; 805. Extrusion plate; 8051. Anti-slip texture; 806. Connecting block; 807. Limiting block. Detailed Implementation
[0023] 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.
[0024] Please see Figures 1-4As shown, this utility model is a gasoline pump assembly, including a fuel cup 1, an electric fuel pump 2 installed inside the fuel cup 1, a fuel level sensor 3 installed on the outside of the fuel cup 1, a connecting rod 4 slidably connected to the upper end of the fuel cup 1, a fuel pump bracket 5 installed on the upper end of the connecting rod 4, a first spring 6 sleeved on the outside of the connecting rod 4, one end of the first spring 6 fixed to the upper end of the fuel cup 1, and the other end of the first spring 6 fixed to the lower end of the fuel pump bracket 5, a connecting pipe 7 inserted into the fuel outlet of the electric fuel pump 2, and the other end of the connecting pipe 7 inserted into the fuel pump bracket 5. The oil inlet and both ends of the connecting pipe 7 are equipped with reinforcing components 8. The reinforcing components 8 include a first connecting section 801 with a through opening at one end and a second connecting section 802, which is partially embedded in the through opening. The inner sides of the first connecting section 801 and the second connecting section 802 are provided with mounting grooves. Each mounting groove is provided with an arc-shaped plate 803. The outer side of each arc-shaped plate 803 is connected to a second spring 804. The outer end of each second spring 804 is connected to a pressing plate 805. The inner side of each pressing plate 805 abuts against the outer side of the connecting pipe 7.
[0025] The first connecting section 801, the second connecting section 802 and the extrusion plate 805 are all arc-shaped structures. When the first connecting section 801 and the second connecting section 802 are closed, they cooperate to form a ring. The end of the first connecting section 801 is provided with a first lever 8011 and the end of the second connecting section 802 is provided with a second lever 8021.
[0026] Specifically, by holding the first lever 8011 and prying the second lever 8021 outward, the second connecting section 802 is disengaged from the opening of the first connecting section 801. Then, the connecting pipe 7 is placed against the inner side of the extrusion plate 805. Finally, the second lever 8021 is released, causing the first connecting section 801 and the second connecting section 802 to elastically reset and close. Simultaneously, the second spring 804 is radially compressed, causing the second spring 804 to push the extrusion plate 805 to tightly press against the outer wall of the connecting pipe 7, forming a continuous radial preload. Under vibration conditions, the second spring 804 absorbs impact energy through dynamic deformation, ensuring that the anti-slip texture 8051 of the extrusion plate 805 always engages with the pipe surface, eliminating fretting wear at the interface, and suppressing the loosening of the connection caused by long-term vibration from the root, thus achieving a good reinforcement effect.
[0027] Both the first connecting section 801 and the second connecting section 802 have through holes on their outer sides. Each through hole is connected to a corresponding mounting groove. Each arc plate 803 has a connecting block 806 fixed on its outer side. Each connecting block 806 passes through the corresponding through hole and is snapped onto the outer side of the first connecting section 801 and the second connecting section 802.
[0028] Both the curved plate 803 and the extrusion plate 805 are provided with limiting blocks 807 on their outer sides, and the two limiting blocks 807 are arranged facing each other.
[0029] Among them, the two opposing limit blocks 807 constitute a dynamic stroke safety mechanism. When the vibration and impact cause the second spring 804 to be compressed to the critical state, the limit blocks 807 make hard contact before the second spring 804 is completely crushed, forming a rigid constraint to avoid the second spring 804 from being over-compressed and causing plastic deformation, and to ensure that the preload is stable for a long time.
[0030] The outer side of the first connecting section 801 is provided with a reinforcing rib 8012;
[0031] Among them, the stiffener 8012 significantly improves the structural stiffness and fatigue resistance of the first connecting section 801. Through the rib structure distributed along the outer side of the first connecting section 801, it radially enhances the ability to resist vibration deformation, circumferentially prevents opening deformation caused by long-term stress, and axially maintains the overall shape stability of the connecting section.
[0032] The inner side of the extrusion plate 805 is provided with anti-slip texture 8051;
[0033] Among them, the anti-slip texture 8051 forms multiple friction locks between the extrusion plate 805 and the connecting pipe 7. Under the action of radial clamping force, these interlaced textures can effectively destroy the smooth state of the contact surface, significantly improve the interface friction coefficient, and thus produce a stable anti-slip effect under vibration conditions.
[0034] In use, by holding the first lever 8011 and prying the second lever 8021 outward, the second connecting section 802 is disengaged from the opening of the first connecting section 801. Then, the connecting pipe 7 is placed against the inner side of the extrusion plate 805. Finally, the second lever 8021 is released, causing the first connecting section 801 and the second connecting section 802 to elastically reset and close, simultaneously compressing the second spring 804 radially. This causes the second spring 804 to push the extrusion plate 805 tightly against the outer wall of the connecting pipe 7, forming a continuous radial preload. Under vibration conditions... The second spring 804 absorbs impact energy through dynamic deformation, ensuring that the anti-slip texture 8051 of the extrusion plate 805 always engages with the pipe surface, eliminating fretting wear at the interface. During use, two opposing limit blocks 807 constitute a dynamic stroke safety mechanism. When vibration and impact cause the second spring 804 to compress to a critical state, the limit block 807 makes hard contact before the second spring 804 is completely crushed, forming a rigid constraint to prevent the second spring 804 from being over-compressed and causing plastic deformation, thus ensuring the preload force is stable and long-lasting.
[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A gasoline pump assembly, comprising a fuel cup (1), an electric fuel pump (2) installed inside the fuel cup (1), a fuel level sensor (3) installed on the outside of the fuel cup (1), a connecting rod (4) slidably connected to the upper end of the fuel cup (1), a fuel pump bracket (5) installed on the upper end of the connecting rod (4), a first spring (6) sleeved on the outside of the connecting rod (4), one end of the first spring (6) fixed to the upper end of the fuel cup (1), and the other end of the first spring (6) fixed to the lower end of the fuel pump bracket (5), a connecting pipe (7) inserted into the outlet of the electric fuel pump (2), and the other end of the connecting pipe (7) inserted into the inlet of the fuel pump bracket (5), characterized in that: Both ends of the connecting pipe (7) are equipped with reinforcing components (8); The reinforcement component (8) includes: The first connecting section (801) has an opening at one end; The second connecting section (802) is partially embedded in the opening. The inner sides of the first connecting section (801) and the second connecting section (802) are provided with mounting grooves. Each mounting groove is provided with an arc plate (803). The outer side of each arc plate (803) is connected to a second spring (804). The outer end of each second spring (804) is connected to a pressing plate (805). The inner side of each pressing plate (805) abuts against the outer side of the connecting pipe (7).
2. A gasoline pump assembly according to claim 1, characterized in that: The first connecting segment (801), the second connecting segment (802), and the extrusion plate (805) are all arc-shaped structures; When the first connecting segment (801) and the second connecting segment (802) are closed, they cooperate to form a ring. The end of the first connecting segment (801) is provided with a first lever (8011), and the end of the second connecting segment (802) is provided with a second lever (8021).
3. A gasoline pump assembly according to claim 1, characterized in that: Both the first connecting segment (801) and the second connecting segment (802) have through holes on their outer sides. Each through hole is connected to a corresponding mounting groove. Each arc plate (803) has a connecting block (806) fixed on its outer side. Each connecting block (806) passes through the corresponding through hole and is snapped onto the outer side of the first connecting segment (801) and the second connecting segment (802).
4. A gasoline pump assembly according to claim 1, characterized in that: Both the arc plate (803) and the extrusion plate (805) are provided with limiting blocks (807) on their outer sides, and the two limiting blocks (807) are arranged facing each other.
5. A gasoline pump assembly according to claim 1, characterized in that: The outer side of the first connecting segment (801) is provided with a reinforcing rib (8012).
6. A gasoline pump assembly according to claim 1, characterized in that: The inner side of the extrusion plate (805) is provided with anti-slip texture (8051).