Fuel pump assembly with stable structure

Abstract

The utility model provides a fuel oil pump assembly with a stable structure, which comprises a bottom shell, a fuel oil pump, a fuel oil pump, a fuel oil pump, a fuel oil pump and a fuel oil pump, the inner support is sequentially provided with a first clamping block, a second clamping block and a third clamping block which are clamped with the bottom shell, and the first clamping block, the second clamping block and the third clamping block are distributed on the outer wall of the inner support in a triangular shape; and a filter is arranged on one side of the oil pump, and the oil pump and the filter are clamped in the mounting cavity. According to the fuel pump assembly with the stable structure, the mounting cavity is formed in the inner support, the oil pump and the filter are assembled in the mounting cavity and abut against the supporting step, so that the supporting and fixing effect on the oil pump and the filter is improved, shaking of the oil pump and the filter during operation is reduced, meanwhile, the clamping blocks are distributed on the inner support in a triangular mode, and the clamping blocks are not prone to falling off. The inner support is installed on the bottom shell through the clamping blocks, and therefore the overall output stability of the oil pump is improved.

Description

Technical Field

[0001] This utility model relates to the field of fuel pump technology, and more specifically to a structurally stable fuel pump assembly. Background Technology

[0002] A fuel pump is a device that uses electrical signals to control a rotating part inside the pump to run at high speed under the influence of a magnetic field. This generates negative pressure to draw fuel from the fuel tank, supplying fuel to the fuel system and enabling the fuel system to operate continuously.

[0003] When the fuel system operates at high frequency and high speed, the corresponding speed of fuel pump extraction and delivery also increases. The fuel pump, including the pump body, has rotating parts that rotate at high speed. This rotation will cause the fuel pump to vibrate and make abnormal noises, which will also affect the fuel pump's fuel suction stability. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies and to solve the issue of vibration that easily occurs in high-frequency output fuel pumps.

[0005] To achieve the above objectives, this utility model can be implemented through the following technical solution: a structurally stable fuel pump assembly, comprising:

[0006] The bottom shell has an oil storage cavity and an oil suction port is provided inside the oil storage cavity;

[0007] An inner support is provided with a first locking block, a second locking block, and a third locking block that engage with the bottom shell. The first locking block, the second locking block, and the third locking block are distributed in a triangular pattern on the outer wall of the inner support.

[0008] The inner bracket has an installation cavity, and a support step is provided inside the installation cavity;

[0009] An oil pump is provided with a filter on one side. Both the oil pump and the filter are engaged in the mounting cavity and abut against the support step so that the oil inlet of the oil pump faces the oil suction port.

[0010] In this embodiment of the utility model, the mounting cavity includes a first arc-shaped portion and a second arc-shaped portion, and a protruding retaining platform is provided between the first arc-shaped portion and the second arc-shaped portion;

[0011] The filter is engaged with the first arc-shaped portion, while the oil pump is engaged with the second arc-shaped portion.

[0012] In this embodiment of the invention, a locking platform and a second limiting groove are sequentially provided on the inner wall of the second arc-shaped portion, and both the locking platform and the second limiting groove cooperate with the oil pump.

[0013] In this embodiment of the utility model, the bottom shell is provided with buckles evenly distributed, and the buckles are respectively engaged with the first buckle block, the second buckle block and the third buckle block.

[0014] In this embodiment of the utility model, a pad is provided on the bottom shell.

[0015] In this embodiment of the utility model, the inner bracket has an installation hole, a support rod is snapped into the installation hole, a top cover is provided at the end of the support rod, a control unit and an oil outlet are respectively provided on the top cover, and the oil outlet is connected to the filter.

[0016] In this embodiment of the utility model, the inner support is provided with fan-shaped locking blocks arranged in a circular array, and the fan-shaped locking blocks engage with the support rod.

[0017] In this embodiment of the utility model, an oil outlet groove is provided on the inner support.

[0018] In this embodiment of the utility model, an oil return port is provided on the bottom shell, and an oil return component is snapped onto the oil return port.

[0019] In this embodiment of the utility model, a first limiting groove is provided on the bottom shell, and conical limiting blocks are provided on both sides of the first limiting groove, and an oil level sensor is provided on the conical limiting blocks.

[0020] Compared with the prior art, the advantages of this application are as follows: by opening an installation cavity on the inner bracket, the oil pump and filter are assembled in the installation cavity and abut against the support step, so as to improve the support and fixation effect of the oil pump and filter and reduce the shaking of the two during operation. At the same time, the inner bracket has triangularly distributed locking blocks, which allow the inner bracket to be installed on the bottom shell, thereby improving the overall output stability of the oil pump. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the fuel pump;

[0022] Figure 2 This is a schematic diagram of the internal parts assembly structure of the disassembled bottom shell and inner support;

[0023] Figure 3 This is a schematic diagram of the bottom structure of the base shell;

[0024] Figure 4 This is a schematic diagram of the bottom structure of the built-in frame;

[0025] Figure 5 This is a schematic diagram of the internal parts distribution structure of the half-section of the bottom shell.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Bottom shell; 10. Oil reservoir; 11. First limiting groove; 12. Conical limiting block; 13. Buckle; 14. Gasket; 15. Oil suction port; 16. Oil return port; 2. Oil return component; 3. Support rod; 31. Spring; 4. Top cover; 41. Control unit; 42. Oil outlet end; 5. Oil pump; 51. Filter element; 6. Inner bracket; 60. Mounting hole; 601. Fan-shaped locking block; 61. Guide groove; 62. Mounting cavity; 621. First arc-shaped part; 622. Protruding locking platform; 623. Locking platform; 624. Second limiting groove; 625. Second arc-shaped part; 63. First locking block; 64. Support step; 65. Oil outlet groove; 66. Second locking block; 67. Third locking block; 7. Filter; 71. Bellows; 8. Fuel pressure regulator; 9. Oil level sensor. Detailed Implementation

[0028] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings.

[0029] like Figure 1-5 As shown, a structurally stable fuel pump assembly includes:

[0030] The bottom shell 1 has an oil storage cavity 10, and an oil suction port 15 is provided in the oil storage cavity 10.

[0031] The inner support 6 is provided with a first locking block 63, a second locking block 66 and a third locking block 67 that engage with the bottom shell 1. The first locking block 63, the second locking block 66 and the third locking block 67 are distributed in a triangular shape on the outer wall of the inner support 6.

[0032] The inner bracket 6 has an installation cavity 62, and a support step 64 is provided inside the installation cavity 62;

[0033] Oil pump 5, filter 7 is provided on one side of oil pump 5. Both oil pump 5 and filter 7 are engaged in the mounting cavity 62 and abut against the support step 64 so that the oil inlet of oil pump 5 faces the oil suction port 15.

[0034] Specifically, the inner bracket 6 is used to fix the fuel pump 5 and the filter 7, so that the inner bracket 6 fits against the bottom shell 1. The first locking block 63, the second locking block 66, and the third locking block 67 are respectively engaged with the bottom shell 1 to fix them inside the bottom shell 1. The first locking block 63, the second locking block 66, and the third locking block 67 are distributed in a triangle on the inner bracket 6, so as to fix the inner bracket 6 to the shell more firmly through three-point fixation. The supporting step 64 has the effect of limiting and locking, so that the fuel pump 5 and the fuel inlet 15 maintain a certain distance, and at the same time fix the fuel pump 5 and the filter 7. The fuel pump 5 corresponds to the fuel inlet 15, thereby improving the fuel suction effect of the fuel pump 5. Furthermore, a guide groove 61 is opened on the inner bracket 6 to further limit the shaking of the fuel pump 5 and the filter 7. This structural layout improves the space utilization inside the bottom shell 1, and the connection structure of each part makes the fuel pump 5 more stable and secure when operating.

[0035] As a further embodiment of this utility model, the mounting cavity 62 includes a first arc-shaped portion 621 and a second arc-shaped portion 625. A protruding retaining platform 622 is provided between the first arc-shaped portion 621 and the second arc-shaped portion 625. The filter 7 is engaged with the first arc-shaped portion 621, and the oil pump 5 is engaged with the second arc-shaped portion 625. The first arc-shaped portion 621 is adapted to the filter 7, and the second arc-shaped portion 625 is adapted to the oil pump 5. The contact surfaces of the first arc-shaped portion 621 and the second arc-shaped portion 625 are relatively long (e.g., ...). Figure 4 As shown in the figure, this further improves the support effect on the filter 7 and the oil pump 5, and reduces the shaking phenomenon during high-frequency operation.

[0036] As a further embodiment of this utility model, a locking platform 623 and a second limiting groove 624 are sequentially provided on the inner wall of the second arc-shaped portion 625. Both the locking platform 623 and the second limiting groove 624 cooperate with the oil pump 5. Multiple sets of the locking platform 623 and the second limiting groove 624 are provided to improve the fixing effect on the oil pump 5.

[0037] As a further embodiment provided by this utility model, buckles 13 are evenly distributed on the bottom shell 1. The buckles 13 are engaged with the first buckle 63, the second buckle 66 and the third buckle 67 respectively. There are three sets of buckles 13, which correspond to the first buckle 63, the second buckle 66 and the third buckle 67 respectively, thereby improving the installation firmness of the bottom shell 1 and the inner bracket 6.

[0038] As a further embodiment of this utility model, a gasket 14 is provided on the bottom shell 1. The gasket 14 can be a rubber gasket 14. When the bottom shell 1 is in contact with the oil tank, the gasket 14 separates the oil tank and the bottom shell 1, which facilitates the oil pump 5 to draw oil.

[0039] As a further embodiment of this utility model, the inner bracket 6 has a mounting hole 60, and a support rod 3 is snapped into the mounting hole 60. A top cover 4 is provided at the end of the support rod 3. A control unit 41 and an oil outlet 42 are respectively provided on the top cover 4. The oil outlet 42 is connected to the filter 7. The support rod 3 is arranged so that the bottom shell 1 is placed on the fuel tank to improve the fuel suction effect of the fuel pump 5. A spring 31 is provided on the support rod 3. The spring 31 is connected to the top cover 4 and the inner bracket 6 respectively. At the same time, the control unit 41 on the top cover 4 controls the fuel pump 5, the filter 7, and the fuel pressure regulator 8. In addition to the switch of the fuel level sensor 9, when the fuel pump 5 is running, the fuel pump 5 draws fuel from the fuel tank and performs a first filtration through the filter element 51 to prevent impurities in the fuel from entering the fuel pump 5. The fuel pump 5 maintains a certain fuel pressure and outputs the fuel to the filter 7 for a second filtration to further remove impurities from the fuel. Subsequently, under the control of the fuel pressure regulator 8, the fuel is output to the fuel outlet 42 at a constant fuel pressure and delivered to the fuel system through the fuel outlet 42. The two filtrations improve the cleanliness of the fuel to reduce the phenomenon of fuel impurities damaging or clogging the pipeline.

[0040] As a further embodiment of this utility model, the inner support 6 is provided with fan-shaped locking blocks 601 arranged in a circumferential array. The fan-shaped locking blocks 601 engage with the support rod 3. At least three sets of fan-shaped locking blocks 601 are provided, and the three sets are evenly distributed on the inner support 6 with the axis of the mounting hole 60 as the reference, thereby improving the support effect on the support rod 3.

[0041] As a further embodiment of this utility model, an oil outlet groove 65 is provided on the inner bracket 6. When the oil level in the oil storage chamber 10 is too high, the fuel will flow back into the fuel tank from the oil outlet groove 65.

[0042] As a further embodiment of this utility model, a return oil port 16 is provided on the bottom shell 1, and a return oil component 2 is snapped onto the return oil port 16. When the output oil pressure in the oil pump 5 is greater than the required oil pressure, a small amount of fuel will flow through the bellows 71 to the return oil component 2, and then flow back from the return oil component 2 to the oil storage chamber 10, so that the oil storage chamber 10 is always full and the fuel supply effect of the fuel pump 5 is improved.

[0043] As a further embodiment of this utility model, a first limiting groove 11 is provided on the bottom shell 1, and conical limiting blocks 12 are provided on both sides of the first limiting groove 11. An oil level sensor 9 is provided on the conical limiting block 12. The first limiting groove 11 allows the oil level sensor 9 to slide and be assembled onto the conical limiting block 12 in the vertical direction. Through the abutment of the conical limiting block 12, the oil level sensor 9 obtains a certain support and fixation effect.

[0044] The above-described technical solution of this utility model addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. The parts not covered in this application are the same as or can be implemented using existing technologies, and will not be described in detail here.

[0045] The technical solutions in the above embodiments have clearly and completely described the content of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A structurally stable fuel pump assembly, characterized in that, include: The bottom shell has an oil storage cavity and an oil suction port is provided inside the oil storage cavity; An inner support is provided with a first locking block, a second locking block, and a third locking block that engage with the bottom shell. The first locking block, the second locking block, and the third locking block are distributed in a triangular shape on the outer wall of the inner support. The inner bracket has an installation cavity, and a support step is provided inside the installation cavity; An oil pump is provided with a filter on one side. Both the oil pump and the filter are engaged in the mounting cavity and abut against the support step so that the oil inlet of the oil pump faces the oil suction port.

2. The structurally stable fuel pump assembly according to claim 1, characterized in that, The mounting cavity includes a first arc-shaped portion and a second arc-shaped portion, and a protruding retaining platform is provided between the first arc-shaped portion and the second arc-shaped portion; The filter is engaged with the first arc-shaped portion, while the oil pump is engaged with the second arc-shaped portion.

3. The structurally stable fuel pump assembly according to claim 2, characterized in that, The inner wall of the second arc-shaped portion is provided with a locking platform and a second limiting groove in sequence, both of which cooperate with the oil pump.

4. The structurally stable fuel pump assembly according to claim 1, characterized in that, The bottom shell is provided with buckles evenly distributed, and the buckles engage with the first buckle, the second buckle and the third buckle respectively.

5. A structurally stable fuel pump assembly according to claim 1, characterized in that, A pad is provided on the bottom shell.

6. The structurally stable fuel pump assembly according to claim 1, characterized in that, The inner bracket has a mounting hole, and a support rod is snapped into the mounting hole. The end of the support rod is provided with a top cover. The top cover is provided with a control unit and an oil outlet, and the oil outlet is connected to the filter.

7. A structurally stable fuel pump assembly according to claim 6, characterized in that, The inner support is provided with fan-shaped locking blocks arranged in a circular array, and the fan-shaped locking blocks engage with the support rod.

8. A structurally stable fuel pump assembly according to claim 6, characterized in that, The inner support is provided with an oil outlet groove.

9. A structurally stable fuel pump assembly according to claim 1, characterized in that, The bottom shell has an oil return port, and an oil return component is snapped onto the oil return port.

10. A structurally stable fuel pump assembly according to claim 1, characterized in that, The bottom shell is provided with a first limiting groove, and conical limiting blocks are provided on both sides of the first limiting groove. An oil level sensor is provided on the conical limiting blocks.

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