Fuel pump support assembly with stable structure

Abstract

According to the technical scheme, the fuel pump support assembly is characterized by comprising a pump core assembly, a pump core support capable of being connected outside the pump core assembly in a sleeved mode and an oil storage barrel connected outside the pump core support in a sleeved mode, and a plurality of elastic clamping hooks capable of drawing the pump core assembly are arranged on the inner wall of the pump core support. The multiple clamping hooks are circumferentially distributed around the pump core assembly, multiple elastic pieces which are circumferentially distributed around the center of the pump core support are arranged at the position, close to the end opening, of the pump core support, and limiting holes corresponding to the multiple elastic pieces one to one are formed in the barrel wall of the oil storage barrel. The multiple elastic pieces are provided with buckles which can be inserted into the corresponding limiting holes and can slide relative to the inner edge of the end opening of the oil storage barrel, the pump core assembly is limited in the pump core support through the clamping hooks, and the pump core support is limited in the oil storage barrel through clamping connection of the buckles and the limiting holes. The problems that in the prior art, disassembly is difficult, observation is not easy, and connection stability is poor are solved.

Description

Technical Field

[0001] The utility model relates to the field of automobile fuel pump assembly parts, and more particularly to a fuel pump bracket assembly with a stable structure. Background Art

[0002] The automobile fuel pump bracket assembly is one of the basic components of the automobile fuel injection system. Its function is to suck the fuel from the fuel tank and deliver the fuel to the fuel supply line to enable the engine to operate normally. Figure 1 and attached Figure 2 As shown, the existing automobile fuel pump bracket assembly mainly includes a pump core component 1, an original pump core bracket a1 and an original oil storage barrel a2. The original pump core bracket a1 is fixedly connected to the bottom of the pump core component 1 by press-fitting. A plurality of limiting column grooves a21 are opened on the inner wall of the original oil storage barrel a2 near the bottom. The original pump core bracket a1 is provided with a plurality of extension elastic arms a11 that can be correspondingly inserted into the plurality of limiting column grooves a21. When the original pump core bracket a1 and the pump core component 1 are integrally installed into the original oil storage barrel a2, as the extension elastic arms a11 are elastically deformed and inserted into the limiting column grooves a21, The original pump core bracket a1 is limited to the original oil storage barrel a2. This design has defects. First, the pump core assembly 1 and the original pump core bracket a1 are fixed together through multiple press-fitting, resulting in low production efficiency and the original pump core bracket a1 is easily damaged. At the same time, there is a problem that the pump core assembly 1 and the original pump core bracket a1 are difficult to separate; second, the original pump core bracket a1 is clamped to the bottom of the original oil storage barrel a2, which will cause trouble for the self-inspection of the original oil storage barrel a2, and the original pump core bracket a1 is difficult to remove. At the same time, during the installation process, it is impossible to observe whether the original pump core bracket a1 is installed in place, which easily causes unstable structural connection. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a fuel pump bracket assembly that is easy to disassemble and assemble, convenient to observe, and has a stable structure.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a structurally stable fuel pump bracket assembly, comprising a pump core assembly, a pump core bracket capable of being sleeved on the outside of the pump core assembly, and an oil storage barrel sleeved on the outside of the pump core bracket, wherein the inner wall of the pump core bracket is provided with a plurality of elastic hooks capable of outlining the pump core assembly, and the plurality of said hooks are distributed circumferentially around the pump core assembly, and the position of the pump core bracket near the port is provided with a plurality of spring pieces distributed circumferentially around the center of the pump core bracket, and the barrel wall of the oil storage barrel is provided with limiting holes corresponding to the plurality of spring pieces one by one, and the plurality of said spring pieces are provided with buckles that can be inserted into the corresponding limiting holes and can slide relative to the inner edge of the oil storage barrel port, the pump core assembly is limited in the pump core bracket by the hooks, and the pump core bracket is limited in the oil storage barrel by the engagement of the buckles with the limiting holes.

[0005] As a further improvement of the present invention, the pump core assembly includes a pump core body, an oil nozzle positioned at the bottom of the pump core body, and a plurality of positioning columns that do not interfere with the oil nozzle and are all positioned at the bottom of the pump core body. The bottom surface of the pump core bracket is provided with column holes for the plurality of positioning columns to pass through one by one, and a flow hole for a part of the pump core body and the oil nozzle to pass through.

[0006] As a further improvement of the present invention, a U-shaped baffle facing the oil nozzle is provided on the bottom surface of the pump core bracket.

[0007] As a further improvement of the present invention, the oil nozzle is connected to an ejection bellows which is bent and passes through a U-shaped baffle, and an ejection seat for limiting a part of the ejection bellows is connected to the bottom surface of the pump core bracket.

[0008] As a further improvement of the present invention, an ejector seat groove matching the ejector seat is provided on the bottom surface of the oil storage barrel.

[0009] As a further improvement of the present invention, an edge ring is provided at the port of the pump core bracket and is mounted on the open port of the oil storage barrel.

[0010] As a further improvement of the present invention, a filter is provided between the bottom of the pump core bracket and the bottom surface of the oil storage barrel.

[0011] As a further improvement of the present invention, a sliding groove is provided at the inner edge of the port of the oil storage barrel, which corresponds one-to-one to the multiple limiting holes and is distributed up and down with respect to the corresponding limiting holes.

[0012] The beneficial effects of the present invention are as follows: the design of the pump core assembly and the pump core bracket being clamped together is more convenient in disassembly and assembly of the pump core assembly than the design of pressing the pump core assembly onto the original pump core bracket in the prior art, simplifies the assembly difficulty, improves production efficiency, and avoids damage to the pump core bracket; there is a difference in structure between the pump core bracket and the original pump core bracket in the prior art, and the design of the pump core bracket being clamped together with the oil storage barrel is more convenient than the prior art in observing whether the pump core bracket and the oil storage barrel are installed in place, ensuring the stability of the connection between the pump core bracket and the oil storage barrel, and is also more convenient in disassembly and assembly, making up for the defect of difficult disassembly in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 An exploded view of the prior art;

[0014] Figure 2 This is a cross-sectional view of the assembly of the original pump core bracket and the original oil storage barrel in the prior art;

[0015] Figure 3 It is a three-dimensional diagram of the utility model;

[0016] Figure 4It is a cross-sectional view of the utility model;

[0017] Figure 5 This is an exploded view of the utility model;

[0018] Figure 6 This is a three-dimensional diagram of the pump core bracket in the utility model;

[0019] Figure 7 This is a three-dimensional diagram of the pump core bracket in the utility model from another perspective;

[0020] Figure 8 It is a three-dimensional diagram of the oil storage barrel in the utility model.

[0021] Figure markings: 1. Pump core assembly; 11. Pump core body; 12. Oil nozzle; 13. Positioning column; 14. Ejector bellows; 15. Ejector seat; 2. Pump core bracket; 21. Hook; 22. Spring piece; 23. Buckle; 24. Edge ring; 25. Column hole; 26. Flow hole; 27. U-shaped baffle; 3. Oil storage barrel; 31. Limiting hole; 32. Ejector seat groove; 33. Sliding groove; 4. Filter; a1. Original pump core bracket; a11. Extended elastic arm; a2. Original oil storage barrel; a21. Limiting column groove. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments, wherein the same components are denoted by the same reference numerals.

[0023] Reference Figures 1 to 8 As shown, a structurally stable fuel pump bracket assembly of this embodiment includes a pump core component 1, a pump core bracket 2 and an oil storage barrel 3. The pump core component 1 includes a pump core body 11 and a nozzle 12 positioned at the bottom of the pump core body 11 and connected to the inner cavity of the pump core body 11. The pump core bracket 2 is barrel-shaped and its outer contour is adapted to the inner cavity contour of the oil storage barrel 3. The height of the pump core bracket 2 is similar to the inner cavity height of the oil storage barrel 3. A flow hole 26 for the oil nozzle 12 to pass through is opened on the bottom surface of the pump core bracket 2. Three elastic holes 26 distributed circumferentially around the center line of the pump core bracket 2 are processed at the open end of the pump core bracket 2 by cutting. The spring piece 22 is elastic, and a buckle 23 is integrally formed on the surface of the three spring pieces 22 facing the outside of the pump core bracket 2. The buckle 23 is a right-angled triangle and the two right-angled sides are respectively connected to the spring piece 22 and arranged in the same direction as the port of the pump core bracket 2. A limiting hole 31 that can be locked with the three buckles 23 is opened on the peripheral wall of the oil storage barrel 3. Three vertical grooves are distributed in a circle around the center line of the pump core bracket 2 on the inner wall of the pump core bracket 2. A long strip-shaped hook 21 is fixedly connected in each of the three vertical grooves. The hook-shaped structure of the three hooks 21 is located on the end of the hook 21 facing the opening of the pump core bracket 2;

[0024] During the assembly process, the pump core body 11 is first placed in the inner cavity of the pump core bracket 2. The hook-shaped structures of the three hooks 21 slide relative to the outer wall of the pump core body 11 and the three hooks 21 are elastically deformed until the bottom of the pump core body 11 touches the bottom surface of the inner cavity of the pump core bracket 2. The oil nozzle 12 passes through the flow hole 26 and is located below the bottom of the pump core bracket 2. The three hooks 21 restore their elastic deformation and the hook-shaped structures are outlined at the edge of the upper surface of the pump core body 11. Then, the pump core bracket 2 equipped with the pump core assembly 1 is installed in the oil storage barrel 3. The inclined surface of the buckle 23 slides relative to the opening edge of the oil storage barrel 3. The spring piece 22 is forced to bend elastically toward the inner cavity of the pump core bracket 2 until the buckle 23 moves to the limiting hole 31. The spring piece 22 recovers its elastic deformation, and the three buckles 23 are respectively engaged in the corresponding limiting holes 31. Then, the pump core bracket 2 is fixed relative to the oil storage barrel 3. During the disassembly process, a thrust is applied to the three buckles 23 to make the spring piece 22 bend toward the inner cavity of the pump core bracket 2. After the three buckles 23 are all out of the limiting holes 31, the pump core bracket 2 is pulled out of the oil storage barrel 3. The three hooks 21 are pushed away from the upper surface of the pump core body 11. Finally, the pump core body 11 is pulled out of the pump core bracket 2.

[0025] Compared with the prior art design of pressing the pump core assembly 1 onto the original pump core bracket a1, the design of the pump core assembly 1 and the pump core bracket 2 being clamped together is more convenient in the disassembly and assembly of the pump core assembly 1, simplifies the assembly difficulty, improves production efficiency, and avoids damage to the pump core bracket 2; there is a difference in structure between the pump core bracket 2 and the original pump core bracket a1 of the prior art, and the design of the pump core bracket 2 being clamped together with the oil storage barrel 3 is easier to observe whether the pump core bracket 2 and the oil storage barrel 3 are installed in place than the prior art, ensuring the connection stability between the pump core bracket 2 and the oil storage barrel 3, and is also more convenient in disassembly and assembly, making up for the defect of difficult disassembly in the prior art.

[0026] As a specific embodiment of the improvement, refer to Figure 6 and Figure 7 As shown, three column holes 25 coaxial with the flow hole 26 and circumferentially distributed are provided on the bottom surface of the pump core bracket 2. The pump core assembly 1 also includes three positioning columns 13 integrally formed on the bottom surface of the pump core body 11 and capable of passing through the three column holes 25 respectively. By designing that the three positioning columns 13 pass through the three column holes 25 respectively, the connection stability of the pump core assembly 1 relative to the pump core bracket 2 can be further improved, and the pump core assembly 1 can be prevented from rotating relative to the pump core bracket 2, thereby reducing the wear between the hook 21 and the pump core assembly 1.

[0027] As a specific embodiment of the improvement, refer to Figure 5 and Figure 7As shown, a U-shaped baffle 27 is provided on the bottom surface of the pump core bracket 2, facing the oil nozzle 12. Both ends of the U-shaped baffle 27 are fixedly connected to the bottom surface of the pump core bracket 2 and the middle cavity of the U-shaped baffle 27 is opposite to the oil nozzle 12. The outline width of the middle cavity of the U-shaped baffle 27 is smaller than the outline size of the oil nozzle 12. During use, the oil sprayed from the oil nozzle 12 can flow through the middle cavity of the U-shaped baffle 27. Such a design can prevent the oil nozzle 12 from easily separating from the pump core body 11 due to excessive oil pressure. The U-shaped baffle 27 blocks the oil nozzle 12 and has a limiting support function, further improving the connection stability of the oil nozzle 12 on the pump core body 11.

[0028] As a specific embodiment of the improvement, refer to Figure 5 and Figure 7 As shown, the oil nozzle 12 is connected to an ejection bellows 14 which is bent and passes through the middle cavity of the U-shaped baffle 27. An ejection seat 15 for limiting the local ejection bellows 14 is connected to the bottom surface of the pump core bracket 2. The ejection seat 15 and the bottom surface of the pump core bracket 2 are respectively provided with connecting columns and column grooves that can interference fit with each other. The ejection bellows 14 is designed to change the flow path of the oil sprayed from the oil nozzle 12, thereby reducing the impact force of the oil through multiple reversing, slowing down the degree of oil scouring on the inner wall of the oil storage barrel 3, and indirectly protecting the internal structure of the oil storage barrel 3; the ejection seat 15 is used to support the ejection bellows 14 and reinforce the position stability of the ejection bellows 14 to avoid the ejection bellows 14 from being displaced under the action of the counter-impact force of the oil.

[0029] As a specific embodiment of the improvement, refer to Figure 5 and Figure 8 As shown, an ejection seat groove 32 matching the ejection seat 15 is provided on the bottom surface of the oil storage barrel 3. The plug-in design of the ejection seat 15 and the ejection seat groove 32 further improves the installation firmness between the pump core bracket 2 and the oil storage barrel 3.

[0030] As a specific embodiment of the improvement, during the processing, a gap needs to be left between the bottom surface of the oil storage barrel 3 and the bottom surface of the pump core bracket 2 to facilitate the flow of oil and the installation of other components. The pump core bracket 2 is easy to press down other components under the action of gravity and cause damage to the components. In order to solve the above problem, refer to Figure 3 、 Figures 5 to 7 As shown, the height of the pump core bracket 2 is higher than the inner cavity height of the oil storage barrel 3, and an edge ring 24 that can fit with the end face of the oil storage barrel 3 is integrally formed on the outer wall of the pump core bracket 2 above the port of the oil storage barrel 3. The outer contour of the edge ring 24 is the same as the outer edge contour of the port of the oil storage barrel 3. The edge ring 24 is designed to limit the downward movement distance of the pump core bracket 2, thereby ensuring that there is enough space between the bottom of the pump core bracket 2 and the bottom surface of the oil storage barrel 3, and at the same time preventing the pump core bracket 2 from pressing down other components, thereby indirectly ensuring the structural stability of other components.

[0031] As a specific embodiment of the improvement, refer to Figure 5 As shown, a filter screen 4 is provided between the bottom of the pump core bracket 2 and the bottom surface of the oil storage barrel 3. The filter screen 4 can be positioned on the bottom surface of the oil storage barrel 3 or the bottom surface of the pump core bracket 2 according to actual production requirements. The design of the filter screen 4 can filter the impurities generated in the inner cavity of the pump core bracket 2, thereby preventing the oil in the pump core bracket 2 from freely falling through the flow hole 26 and bringing impurities into the oil storage barrel 3, and at the same time preventing impurities from clogging the oil outlet hole on the bottom surface of the oil storage barrel 3.

[0032] As a specific embodiment of the improvement, refer to Figure 3 、 Figure 4 and Figure 8 As shown, the inner edge of the port of the oil storage barrel 3 is provided with a sliding groove 33 which corresponds to a plurality of limiting holes 31 one by one and is distributed up and down with the corresponding limiting holes 31. The inner cavity of the sliding groove 33 is in the shape of a right triangle. During the assembly process, the buckle 23 first enters the sliding groove 33 and the inclined surface of the buckle 23 slides relative to the inclined surface of the sliding groove 33 and the spring piece 22 undergoes elastic deformation until the buckle 23 is separated from the sliding groove 33 and the spring piece 22 is deformed to the maximum extent. Then the buckle 23 and the limiting holes 31 are separated. The design of aligning the positioning holes 31, restoring the deformation of the spring piece 22, and firstly entering the sliding groove 33 of the buckle 23 is compared with the design of sliding the buckle 23 directly with the inner edge of the port of the oil storage barrel 3. The design uses surface sliding instead of surface sliding, thereby reducing the wear between the buckle 23 and the oil storage barrel 3, effectively ensuring the structural stability of the buckle 23 and the oil storage barrel 3. At the same time, the buckle 23 causes the speed of the bending deformation of the spring piece 22 to be slowed down, thereby avoiding the phenomenon that the spring piece 22 is easily broken due to the fast deformation speed.

[0033] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A fuel pump bracket assembly with a stable structure, characterized in that: The invention comprises a pump core assembly (1), a pump core bracket (2) which can be sleeved on the outside of the pump core assembly (1), and an oil storage barrel (3) which is sleeved on the outside of the pump core bracket (2); a plurality of elastic hooks (21) which can outline the pump core assembly (1) are arranged on the inner wall of the pump core bracket (2); the plurality of hooks (21) are distributed in a circle around the pump core assembly (1); a plurality of spring pieces (22) which are distributed in a circle around the center of the pump core bracket (2) are arranged at a position adjacent to a port of the pump core bracket (2). ), the barrel wall of the oil storage barrel (3) is provided with limiting holes (31) corresponding to the plurality of spring pieces (22), and the plurality of spring pieces (22) are each provided with a buckle (23) capable of being inserted into the corresponding limiting holes (31) and capable of sliding relative to the inner edge of the port of the oil storage barrel (3), the pump core assembly (1) is limited in the pump core bracket (2) by the hook (21), and the pump core bracket (2) is limited in the oil storage barrel (3) by the buckle (23) being engaged with the limiting hole (31).

2. A fuel pump bracket assembly with a stable structure according to claim 1, characterized in that: The pump core assembly (1) comprises a pump core body (11), an oil nozzle (12) positioned at the bottom of the pump core body (11), and a plurality of positioning columns (13) which do not interfere with the oil nozzle (12) and are all positioned at the bottom of the pump core body (11); a bottom surface of the pump core bracket (2) is provided with column holes (25) through which the plurality of positioning columns (13) pass one by one, and a flow hole (26) through which a part of the pump core body (11) and the oil nozzle (12) pass.

3. A structurally stable fuel pump bracket assembly according to claim 2, characterized in that: A U-shaped retaining frame (27) facing the oil nozzle (12) is arranged on the bottom surface of the pump core bracket (2).

4. A structurally stable fuel pump bracket assembly according to claim 3, characterized in that: The oil nozzle (12) is connected to an ejection bellows (14) which is bent and passes through a U-shaped retaining frame (27), and an ejection seat (15) for limiting the local ejection bellows (14) is connected to the bottom surface of the pump core bracket (2).

5. A structurally stable fuel pump bracket assembly according to claim 4, characterized in that: The bottom surface of the oil storage barrel (3) is provided with an ejection seat groove (32) matching the ejection seat (15).

6. A structurally stable fuel pump bracket assembly according to claim 1 or 2 or 3 or 4 or 5, characterized in that: An edge ring (24) mounted on the opening port of the oil storage barrel (3) is provided at the port of the pump core bracket (2).

7. A structurally stable fuel pump bracket assembly according to claim 1 or 2 or 3 or 4 or 5, characterized in that: A filter screen (4) is provided between the bottom of the pump core bracket (2) and the bottom surface of the oil storage barrel (3).

8. A structurally stable fuel pump bracket assembly according to claim 1 or 2 or 3 or 4 or 5, characterized in that: The inner edge of the port of the oil storage barrel (3) is provided with sliding grooves (33) corresponding to the plurality of limiting holes (31) one by one and distributed up and down with respect to the corresponding limiting holes (31).

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