Connecting mechanism for pump core and filter of oil pump

Abstract

The utility model relates to the technical field of automobile oil pumps, in particular to a connecting mechanism for a pump core and a filter of an oil pump. A pump core oil outlet is formed in one end of the pump core, a filter oil inlet is formed in one end of the filter, the pump core oil outlet is detachably connected with a quick connecting piece, an oil outlet hole is formed in the side, close to the filter, of the quick connecting piece, the filter oil inlet and the oil outlet hole are opposite in position and connected in a sealed mode, and a check valve is installed in the filter oil inlet. One or more oil outlet connectors are further arranged at the end, away from the pump core, of the quick connecting piece. After the prior art is improved, the connection mode between the pump core and the filter is simple in assembly, compact in structure, small in occupied space, cost-saving, capable of selecting various oil outlet modes and higher in flexibility.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile oil pumps, in particular to a connecting mechanism between a pump core and a filter of an oil pump. Background Art

[0002] With the continuous advancement of energy-saving and emission-reduction policies and the rapid technological innovation in the automotive and aviation sectors, the design and performance optimization of fuel pump assemblies, as core components in the powertrain, have become particularly important. Traditional fuel pump assemblies typically consist of one or more fuel pumps, independent filters, pressure regulators, and related control and monitoring components, each installed independently in the fuel system. However, this decentralized configuration not only increases system complexity and assembly difficulty, but can also lead to increased energy losses during fuel transfer, delayed response times, and increased maintenance costs. In recent years, to address these challenges, the industry's research and development focus has shifted to highly integrated fuel pump assembly designs. This design concept aims to achieve a compact layout, efficient transmission, and intelligent control of the fuel management system by integrating key components such as the fuel pump, filter, pressure regulator, sensor, and electronic control unit into an integrated module.

[0003] For example, Chinese patent document CN113482819A discloses a fuel pump assembly with near- and far-end injection, in which the main oil outlet connector of the pump core assembly is connected to the oil inlet pipe of the filter assembly, and the secondary oil outlet connector of the pump core assembly is connected to the oil inlet connector of the near- and far-end injection assembly. Since the pump core assembly and the filter assembly and the near- and far-end injection assembly are connected by hose pipes, the overall structure is scattered, the installation is time-consuming and labor-intensive, and it occupies a large space.

[0004] Therefore, it is necessary to improve the above shortcomings of the prior art. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art and provide a connection mechanism between the pump core and the filter of the oil pump, so as to solve the problem that in the prior art, the pump core assembly and the filter assembly, as well as the proximal and distal ejection assemblies, all use a hose pipe connection method, the overall structure is scattered, the installation is time-consuming and labor-intensive, and the space is large.

[0006] To achieve the above object, the present utility model provides the following technical solution: A connecting mechanism for a pump core and a filter of an oil pump, comprising a pump core and a filter. One end of the pump core is provided with a pump core oil outlet, and one end of the filter is provided with a filter oil inlet. The pump core oil outlet is detachably connected with a quick connector. An oil outlet hole is provided on the side of the quick connector close to the filter. The filter oil inlet and the oil outlet hole are opposite in position and are hermetically connected. A check valve is installed in the filter oil inlet. One or more oil outlet connectors are further provided at the end of the quick connector away from the pump core.

[0007] With the above technical solution, the pump core and the filter are connected in series through a quick connector. Fuel flows from the pump core oil outlet into the quick connector. Part of it flows through the oil outlet hole of the quick connector into the filter oil inlet, passes through the check valve, and finally flows out after being filtered by the filter and enters the engine. Another part is diverted from the oil outlet connector. The oil outlet connector can be connected to a distal injection device to adjust the oil pressure and promote fuel circulation, or can be connected to other oil outlet devices, providing more oil outlet methods. Compared with the connection method of a hose, the connection method between the pump core and the filter is not only simple in assembly, compact in structure, small in space occupation, cost-saving, but also has multiple optional oil outlet methods and higher flexibility.

[0008] The further setting of the above technical solution is: First convex blocks are provided on both side surfaces of the pump core oil outlet. First lugs corresponding to the first convex blocks are provided on the side surface of the quick connector. A first inclined surface facing the first lug is provided on the upper end surface of the first convex block. A second inclined surface matching the first inclined surface is provided on the inner side surface of the first lug.

[0009] With the above technical solution, when installing the quick connector onto the pump core, align the first lug on the side surface of the quick connector with the first convex blocks on both side surfaces of the pump core oil outlet and press it close. The first lug can be made to snap the first convex block into the first lug along the first inclined surface, realizing the snap connection between the quick connector and the pump core. When disassembly is required, the snap connection can be released, so that the quick connector can be conveniently disassembled and assembled.

[0010] The further setting of the above technical solution is: Limit convex strips capable of abutting against the inner side surface of the first lug are provided on both sides of the first convex block. The upper ends of the limit convex strips can abut against the lower end surface of the quick connector.

[0011] With the above technical solution, the lower end surface of the quick connector and the inner side surface of the first lug are simultaneously limited by the limit convex strips, making the snap connection between the quick connector and the pump core more stable.

[0012] The further setting of the above technical solution is as follows: on both sides of one end of the quick-connecting part close to the oil inlet of the filter, there are second bumps, on the side of the oil inlet of the filter, there are second lugs corresponding to the second bumps, on the upper end surface of the second bump, there is a third inclined surface facing the second lug, and on the inner side surface of the second lug, there is a fourth inclined surface matching the third inclined surface.

[0013] Adopting the above technical solution, when installing the quick-connecting part onto the filter, align the second lugs on the side of the oil inlet of the filter with the second bumps on both side surfaces of the quick-connecting part and press close, the second lugs can make the second bumps snap into the second lugs along the third inclined surface, realizing the snap connection between the quick-connecting part and the filter. When disassembly is needed, just release the snap connection, thus enabling convenient disassembly and assembly of the quick-connecting part.

[0014] The further setting of the above technical solution is as follows: on the outer peripheral surface of one end of the oil outlet of the pump core close to the quick-connecting part, there is a first sealing groove, a first sealing ring is sleeved in the first sealing groove, on the outer peripheral surface of one end of the quick-connecting part close to the oil inlet of the filter, there is a second sealing groove, and a second sealing ring is sleeved in the second sealing groove.

[0015] Adopting the above technical solution, by respectively arranging the first sealing ring between the oil outlet of the pump core and the quick-connecting part, and the second sealing ring between the quick-connecting part and the oil inlet of the filter, the sealing performance of the connection part is improved.

[0016] The further setting of the above technical solution is as follows: on the side of the filter opposite to the oil inlet of the filter, there is an oil outlet joint of the filter.

[0017] Adopting the above technical solution, the oil inlet and the oil outlet joint of the filter are located at the same end, making the structure more compact.

[0018] The beneficial effects achieved by the present utility model are as follows: the connection method between the pump core and the filter is not only simple in assembly, compact in structure, small in space occupation, cost-saving, but also has multiple oil outlet modes to choose from and higher flexibility. Description of the Drawings

[0019] Figure 1 is the structural schematic diagram of an embodiment of the present utility model;

[0020] Figure 2 is the exploded structural schematic diagram of an embodiment of the present utility model;

[0021] Figure 3 is Figure 2 the partial view at A in

[0022] Figure 4 is the structural schematic diagram of the quick-connecting part in an embodiment of the present utility model;

[0023] Figure 5 is the sectional structural schematic diagram of the present utility model. Detailed implementation manners

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] As Figures 1-5 shown in [a certain figure], a connecting mechanism between a pump core and a filter for an oil pump includes a pump core 1 and a filter 2. One end of the pump core 1 is provided with a pump core oil outlet 11, and one end of the filter 2 is provided with a filter inlet 21. The pump core oil outlet 11 is detachably connected with a quick connector 3. An oil outlet hole 30 is provided on the side of the quick connector 3 close to the filter 2. The filter inlet 21 is opposite in position to the oil outlet hole 30 and is hermetically connected. A check valve 4 is installed in the filter inlet 21. One or more oil outlet connectors 31 (only one oil outlet connector is taken as an example in the attached drawing) are further provided at the end of the quick connector 3 away from the pump core 1. First convex blocks 12 are provided on both side surfaces of the pump core oil outlet 11. First clamping ears 32 corresponding to the first convex blocks 12 are provided on the side surface of the quick connector 3. A first inclined surface 121 facing the first clamping ear 32 is provided on the upper end surface of the first convex block 12. A second inclined surface 321 matching with the first inclined surface 121 is provided on the inner side surface of the first clamping ear 32. Limiting convex strips 13 capable of abutting against the inner side surface of the first clamping ear 32 are provided on both sides of the first convex block 12. The upper ends of the limiting convex strips 13 can abut against the lower end surface of the quick connector 3. Second convex blocks 33 are provided on both sides of the end of the quick connector 3 close to the filter inlet 21. Second clamping ears 22 corresponding to the second convex blocks 33 are provided on the side surface of the filter inlet 21. A third inclined surface 331 facing the second clamping ear 22 is provided on the upper end surface of the second convex block 33. A fourth inclined surface 221 matching with the third inclined surface 331 is provided on the inner side surface of the second clamping ear 22. A first sealing groove 110 is provided on the outer peripheral surface of the end of the pump core oil outlet 11 close to the quick connector 3. A first sealing ring (not shown in the figure) is sleeved in the first sealing groove 110. A second sealing groove 34 is provided on the outer peripheral surface of the end of the quick connector 3 close to the filter inlet 21. A second sealing ring (not shown in the figure) is sleeved in the second sealing groove 34. A filter oil outlet connector 23 is provided on the side of the filter 2 opposite to the filter inlet 21.

[0026] In the above embodiments, the pump core 1 and the filter 2 are connected in series through the quick-connecting part 3. Fuel flows into the quick-connecting part 3 from the oil outlet 11 of the pump core. A part of the fuel flows into the oil inlet 21 of the filter through the oil outlet hole 30 of the quick-connecting part 3, and finally flows into the filter 2 through the check valve 4 and then flows out and enters the engine after filtration. Another part is diverted from the oil outlet joint 31. The oil outlet joint 31 can be connected to a remote ejector device to adjust the oil pressure and promote fuel circulation, or can be connected to other oil outlet devices, providing more oil outlet methods. Compared with the connection method of a hose, the connection method between the pump core 1 and the filter 2 is not only simple in assembly, compact in structure, small in space occupation, cost-saving, but also has multiple optional oil outlet methods and higher flexibility.

Claims

1. A connecting mechanism for a pump core and a filter of an oil pump, comprising a pump core and a filter. One end of the pump core is provided with a pump core oil outlet, and one end of the filter is provided with a filter oil inlet, characterized in that: The oil outlet of the pump core is detachably connected with a quick connector. An oil outlet hole is arranged on the side of the quick connector close to the filter. The oil inlet of the filter is opposite in position to the oil outlet hole and is hermetically connected. A check valve is installed in the oil inlet of the filter. One or more oil outlet connectors are further arranged at the end of the quick connector away from the pump core.

2. The connecting mechanism between the pump core and the filter for an oil pump according to claim 1, characterized in that: First bumps are arranged on both side surfaces of the oil outlet of the pump core. First lugs corresponding to the first bumps are arranged on the side surface of the quick connector. A first inclined surface facing the first lug is arranged on the upper end surface of the first bump. A second inclined surface matching with the first inclined surface is arranged on the inner side surface of the first lug.

3. The connecting mechanism between the pump core and the filter for an oil pump according to claim 2, wherein: Limit convex strips capable of abutting against the inner side surface of the first lug are arranged on both sides of the first bump. The upper ends of the limit convex strips can abut against the lower end surface of the quick connector.

4. The connecting mechanism between the pump core and the filter for an oil pump according to claim 3, characterized in that: Second bumps are arranged on both sides of the end of the quick connector close to the oil inlet of the filter. Second lugs corresponding to the second bumps are arranged on the side surface of the oil inlet of the filter. A third inclined surface facing the second lug is arranged on the upper end surface of the second bump. A fourth inclined surface matching with the third inclined surface is arranged on the inner side surface of the second lug.

5. The connecting mechanism between the pump core and the filter for an oil pump according to claim 4, characterized in that: A first sealing groove is arranged on the outer peripheral surface of the end of the oil outlet of the pump core close to the quick connector. A first sealing ring is sleeved in the first sealing groove. A second sealing groove is arranged on the outer peripheral surface of the end of the quick connector close to the oil inlet of the filter. A second sealing ring is sleeved in the second sealing groove.

6. A connecting mechanism between a pump core and a filter for an oil pump according to any one of claims 1-5, characterized in that: A filter oil outlet connector is arranged on the side of the filter opposite to the oil inlet of the filter.

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