A brushless fuel pump core

Abstract

This utility model relates to a brushless fuel pump core, including a stator silicon steel sheet. A rotating shaft is provided at the center of the stator silicon steel sheet, and a rotor is sleeved on the rotating shaft. A housing is sleeved on the outer periphery of the stator silicon steel sheet, and a magnetic cylinder is provided between the stator silicon steel sheet and the housing. The stator silicon steel sheet includes an upper stator silicon steel sheet and a lower stator silicon steel sheet arranged in a mirror image. Several winding grooves for coil winding are evenly distributed on the surface of the upper stator silicon steel sheet and the lower stator silicon steel sheet. An abutment ring is provided at the end of the upper stator silicon steel sheet and the lower stator silicon steel sheet. A sleeve groove for the magnetic cylinder is formed between the abutment rings. The use of mirror-arranged upper and lower stator silicon steel sheets facilitates manufacturing and reduces production difficulty.

Description

Technical Field

[0001] This utility model relates to the field of automotive electronic control technology, specifically to a brushless fuel pump core. Background Technology

[0002] The brushless fuel pump core is a key component of modern automotive fuel supply systems. Utilizing brushless motor technology, it offers significant advantages over traditional brushed fuel pump cores. In terms of performance, brushless fuel pump cores operate more efficiently, delivering fuel to the engine precisely and stably, ensuring smooth engine power output. They also have a longer service life because the brushless design avoids frictional losses between the brushes and the commutator, reducing the probability of malfunctions and lowering maintenance costs. Furthermore, they exhibit excellent noise control, producing minimal noise during operation, enhancing driving comfort. In addition, brushless fuel pump cores have a wide speed range, flexibly adjusting the fuel supply according to different engine operating conditions, effectively improving fuel efficiency, reducing fuel consumption, saving users operating costs, and also better meeting environmental protection requirements.

[0003] The patent application CN111648885A discloses a device that, from the inside out, consists of an oil outlet cover assembly, an impeller, and an oil inlet cover assembly. Inside the housing, there is a rotor assembly and a stator plastic-coated body. This stator plastic-coated body is an integrated structure formed by coating the stator, power supply terminals, and bearings with plastic. One end of the power supply terminal is welded to the enameled wire of the stator, while the other end passes through the plastic coating and is exposed. The bearing is fixed between the stator and the plastic coating and is coaxial with the stator. The plastic coating of the stator, power supply terminals, and bearings ensures the coaxiality of the bearing and stator. However, this technology involves a single-piece molding of the stator silicon steel sheet. Producing complex shapes or intricate structures of integral stator silicon steel sheets is difficult and costly. Furthermore, if a part of the stator silicon steel sheet is damaged during motor use, the entire stator silicon steel sheet needs to be replaced, resulting in high operating costs. Therefore, this technology still has room for improvement. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a brushless fuel pump core to address the shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a brushless fuel pump core, comprising a stator silicon steel sheet, a rotating shaft at the center of the stator silicon steel sheet, a rotor sleeved on the rotating shaft, a housing sleeved on the outer periphery of the stator silicon steel sheet, and a magnetic cylinder between the stator silicon steel sheet and the housing, characterized in that: the stator silicon steel sheet comprises an upper stator silicon steel sheet and a lower stator silicon steel sheet arranged in a mirror image, the surfaces of the upper stator silicon steel sheet and the lower stator silicon steel sheet are evenly distributed with a plurality of winding grooves for winding coils, and the ends of the upper stator silicon steel sheet and the lower stator silicon steel sheet are each provided with an abutment ring, and a sleeve groove for the magnetic cylinder to be sleeved is formed between the abutment rings.

[0006] By adopting the above technical solution, the stator silicon steel sheets are arranged in a mirror image, with upper and lower stator silicon steel sheets, which facilitates manufacturing and reduces production difficulty. The winding grooves evenly distributed on the surface of the upper and lower stator silicon steel sheets make the coil winding more neat. The abutment ring at the end forms a sleeve groove for the magnetic cylinder to be sleeved, which can realize the precise positioning and stable installation of the magnetic cylinder, ensure the accurate relative position between the magnetic cylinder and the stator silicon steel sheets, avoid the problem of uneven magnetic field distribution caused by magnetic cylinder position deviation, and improve the reliability of motor operation.

[0007] The aforementioned brushless fuel pump core can be further configured such that: the upper stator silicon steel sheet and the lower stator silicon steel sheet have mounting holes for rotor installation at their centers, the rotor is sleeved in the mounting holes, the inner wall of the mounting holes is evenly distributed with abutment terminals, a protective sleeve is provided between the abutment terminals and the rotor, and the protective sleeve abuts against the abutment terminals.

[0008] Using the above technical solution, the mounting holes opened in the center of the upper and lower stator silicon steel sheets provide a precise mounting position for the rotor, ensuring that the rotor can be accurately positioned in the center of the stator. The evenly distributed abutment terminals on the inner wall of the mounting holes can position and support the rotor, keeping it stable during rotation, reducing swaying and offset, and improving the stability and reliability of motor operation. The protective sleeve set between the abutment terminals and the rotor can prevent the abutment terminals from directly contacting the rotor, reducing friction and wear between the two, and extending the service life of the rotor and the abutment terminals.

[0009] The aforementioned brushless fuel pump core can be further configured as follows: the oil outlet end cap includes an oil outlet base and an oil outlet cap, the surface of the oil outlet cap is provided with an oil outlet, the oil outlet base is provided with a plurality of connecting feet at one end facing the oil outlet cap, the oil outlet cap is provided with a plurality of through holes for the connecting feet to pass through, and the oil outlet cap is provided with a fixing component for external fixed installation on the same side as the oil outlet.

[0010] The above technical solution uses a fuel outlet on the surface of the fuel outlet cap as a fuel output pipe. The fixed component located on the same side of the fuel outlet cap facilitates the fixed installation of the fuel outlet cap with the external fuel supply system, ensuring the stability of the fuel outlet cap during operation and preventing displacement or loosening due to vibration or external force. It also ensures accurate connection between the fuel outlet and the external pipeline.

[0011] The aforementioned brushless fuel pump core can be further configured such that: the fixing component includes a first plug-in component disposed on the same side of the fuel outlet cap as the fuel outlet, a snap-fit ​​component symmetrically disposed on one side of the first plug-in component, a second plug-in component disposed between the snap-fit ​​components, the first plug-in component, the snap-fit ​​component, and the second plug-in component are connected by reinforcing ribs, a plurality of placement grooves are formed between the reinforcing ribs, and the through hole and connecting foot are placed in the placement grooves.

[0012] Using the above technical solution, the first connector, the snap-fit ​​connector, and the second connector are connected by reinforcing ribs. The reinforcing ribs enhance the connection strength between the components. The symmetrically arranged snap-fit ​​connectors facilitate quick snap-fit ​​with external components. The placement grooves formed between the reinforcing ribs provide suitable placement space for the through holes and connecting feet.

[0013] The aforementioned brushless fuel pump core can be further configured such that: the surface of the oil outlet is provided with snap-fit ​​threads, the oil outlet is provided with an oil outlet valve, and a plurality of positioning protrusions are provided between the oil outlet valve and the inner wall of the oil outlet.

[0014] The above technical solution features snap-fit ​​threads on the surface of the oil outlet, facilitating a tight connection with external fuel lines. The threaded connection ensures the stability and sealing of the connection. Several positioning protrusions between the oil outlet valve and the inner wall of the oil outlet serve to position and install the oil outlet valve.

[0015] The aforementioned brushless fuel pump core can be further configured such that: the fuel inlet end cap includes a fuel inlet base, a fuel inlet cap is provided on one side of the fuel inlet base, and a fuel inlet is provided on the surface of the fuel inlet base.

[0016] The above technical solution includes an inlet cap on one side of the inlet base and an inlet port on the surface of the inlet base. The inlet port guides the fuel to flow smoothly into the pump core, reducing the resistance and turbulence of fuel flow, improving the efficiency of fuel intake, and ensuring that the pump core can continuously and stably obtain sufficient fuel supply. The cap can also buffer and rectify the incoming fuel, further optimizing the fuel flow state and allowing the fuel to enter the pump core in a more uniform state.

[0017] The beneficial effects of this utility model are as follows: The stator silicon steel sheets adopt mirror-arranged upper and lower stator silicon steel sheets, which facilitates manufacturing and reduces production difficulty. The abutment ring at the end forms a fitting groove for the magnetic cylinder, which can realize the precise positioning and stable installation of the magnetic cylinder, ensure the accurate relative position between the magnetic cylinder and the stator silicon steel sheets, avoid the problem of uneven magnetic field distribution caused by magnetic cylinder position deviation, and improve the reliability of motor operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an exploded view of the structure of this utility model;

[0020] Figure 3 This is a structural diagram of the oil outlet cap of this utility model;

[0021] Label annotations: 1-Stator silicon steel sheet, 2-Shaft, 3-Rotor, 4-Housing, 5-Magnetic cylinder, 6-Upper stator silicon steel sheet, 7-Lower stator silicon steel sheet, 8-Winding groove, 9-Abutment ring, 10-Sleeve groove, 11-Mounting hole, 12-Abutment terminal, 13-Protective sleeve, 14-Oil outlet base, 15-Oil outlet cap, 16-Slow oil outlet port, 17-Connecting foot, 18-Through hole, 19-First connector, 20-Snap-fit ​​connector, 21-Second connector, 22-Reinforcing rib, 23-Placement groove, 24-Snap-fit ​​thread, 25-Oil outlet valve, 26-Positioning protrusion, 27-Oil inlet base, 28-Oil inlet cap, 29-Oil inlet port. Detailed Implementation

[0022] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0023] like Figure 1-3The present invention provides the following technical solution: a brushless fuel pump core, comprising a stator silicon steel sheet 1, a rotating shaft 2 at the center of the stator silicon steel sheet 1, a rotor 3 sleeved on the rotating shaft 2, a housing 4 surrounding the stator silicon steel sheet 1, a magnetic cylinder 5 between the stator silicon steel sheet 1 and the housing 4, the stator silicon steel sheet 1 comprising an upper stator silicon steel sheet 6 and a lower stator silicon steel sheet 7 mirror-arranged, the surfaces of the upper stator silicon steel sheet 6 and the lower stator silicon steel sheet 7 having a plurality of winding grooves 8 evenly distributed for coil winding, the upper stator silicon steel sheet 6 and the lower stator silicon steel sheet 7 having a plurality of winding grooves 8 evenly distributed on their surfaces. Each end of the steel sheet 7 is provided with an abutment ring 9, and the abutment rings 9 form a fitting groove 10 for the magnetic cylinder 5 to be fitted. The stator silicon steel sheet 1 adopts an upper stator silicon steel sheet 6 and a lower stator silicon steel sheet 7 arranged in a mirror image, which facilitates manufacturing and reduces production difficulty. The winding grooves 8 evenly distributed on the surface of the upper and lower stator silicon steel sheets 7 make the coil winding more neat. The abutment rings 9 at the ends form a fitting groove 10 for the magnetic cylinder 5 to be fitted, which can realize the precise positioning and stable installation of the magnetic cylinder 5, and ensure the relative position between the magnetic cylinder 5 and the stator silicon steel sheet 1. The accurate positioning avoids the problem of uneven magnetic field distribution caused by the position deviation of the magnetic cylinder 5, thus improving the reliability of motor operation. The upper stator silicon steel sheet 6 and the lower stator silicon steel sheet 7 have mounting holes 11 for the rotor 3 to be installed in the center. The rotor 3 is fitted into the mounting holes 11. The inner wall of the mounting holes 11 is evenly distributed with abutment terminals 12. A protective sleeve 13 is provided between the abutment terminals 12 and the rotor 3. The protective sleeve 13 abuts against the abutment terminals 12. The mounting holes 11 in the center of the upper and lower stator silicon steel sheets 7 provide a precise installation position for the rotor 3, ensuring that the rotor 3 can be accurately positioned in the center of the stator. The abutment terminals 12 evenly distributed on the inner wall of the mounting holes 11 can position and support the rotor 3, keeping the rotor 3 stable during rotation, reducing swaying and deviation, and improving the stability and reliability of motor operation. The protective sleeve 13 between the abutment terminals 12 and the rotor 3 can prevent the abutment terminals 12 from directly contacting the rotor 3, reducing friction and wear between the two, and extending the service life of the rotor 3 and the abutment terminals 12.

[0024] like Figure 1-3The present invention provides the following technical solution: a brushless fuel pump core, the fuel outlet end cap including a fuel outlet base 14 and a fuel outlet cap 15, the surface of the fuel outlet cap 15 having a fuel outlet 16, the fuel outlet base 14 having several connecting feet 17 at the end facing the fuel outlet cap 15, the fuel outlet cap 15 having several through holes 18 for the connecting feet 17 to pass through, the fuel outlet cap 15 having a fixing component for fixed installation with the outside on the same side as the fuel outlet 16, the fuel outlet 15 having a fuel output pipe on the surface of the fuel outlet cap 15, the fixing component on the same side of the fuel outlet cap 15 having a fuel output pipe, the fuel outlet cap having a fixing component on the same side as the fuel outlet 16, facilitates the fixed installation of the fuel outlet end cap with the external fuel supply system, ensuring fuel output. The stability of the end cap during operation is ensured to prevent displacement or loosening due to vibration or external forces, and to ensure accurate connection between the oil outlet 16 and the external pipeline. The fixing component includes a first plug-in 19 located on the same side of the oil outlet cap 15 as the oil outlet 16. A snap-fit ​​20 is symmetrically arranged on one side of the first plug-in, and a second plug-in 21 is provided between the snap-fit ​​20s. The first plug-in 19, snap-fit ​​20, and second plug-in are connected by reinforcing ribs 22, which form several placement grooves 23. Through holes and connecting feet 17 are placed in the placement grooves 23. The first plug-in 19, snap-fit ​​20, and second plug-in are connected by the reinforcing ribs 22. The reinforcing ribs 22 enhance the connection strength between the components. The symmetrically arranged snap-fit ​​parts 20 facilitate quick snap-fit ​​with external components. The placement grooves 23 formed between the reinforcing ribs 22 provide suitable placement space for the through holes and connecting feet 17. The surface of the oil outlet 16 is provided with snap-fit ​​threads 24, and an oil outlet valve 25 is provided inside the oil outlet 16. Several positioning protrusions 26 are provided between the oil outlet valve 25 and the inner wall of the oil outlet 16. The snap-fit ​​threads 24 on the surface of the oil outlet 16 facilitate tight connection with external fuel lines. The threaded connection ensures the stability and sealing of the connection. The positioning protrusions 26 between the oil outlet valve 25 and the inner wall of the oil outlet 16... The oil outlet valve 25 serves as a positioning and installation element. The oil inlet end cap includes an oil inlet base 27, an oil inlet cap 28 on one side of the oil inlet base 27, and an oil inlet port 29 on the surface of the oil inlet base 27. The oil inlet port 29 can guide fuel to flow smoothly into the pump core, reduce fuel flow resistance and turbulence, improve fuel intake efficiency, and ensure that the pump core can continuously and stably obtain sufficient fuel supply. The oil cap can buffer and rectify the incoming fuel, further optimize the fuel flow state, and allow the fuel to enter the pump core in a more uniform state.

[0025] The beneficial effects of this utility model are as follows: The stator silicon steel sheet 1 adopts an upper stator silicon steel sheet 6 and a lower stator silicon steel sheet 7 arranged in a mirror image, which facilitates manufacturing and reduces production difficulty. The abutment ring 9 at the end forms a fitting groove 10 for the magnetic cylinder 5 to be fitted, which can realize the precise positioning and stable installation of the magnetic cylinder 5, ensure the accurate relative position between the magnetic cylinder 5 and the stator silicon steel sheet 1, avoid the problem of uneven magnetic field distribution caused by the position deviation of the magnetic cylinder 5, and improve the reliability of motor operation.

Claims

1. A brushless fuel pump core, comprising a stator silicon steel sheet, a rotating shaft is arranged in the center of the stator silicon steel sheet, a rotor is sleeved on the rotating shaft, a shell is sleeved on the outer periphery of the stator silicon steel sheet, and a magnetic cylinder is arranged between the stator silicon steel sheet and the shell, characterized in that: The stator silicon steel sheet includes an upper stator silicon steel sheet and a lower stator silicon steel sheet arranged in a mirror image. The surfaces of the upper stator silicon steel sheet and the lower stator silicon steel sheet are evenly distributed with a plurality of winding grooves for winding coils. The ends of the upper stator silicon steel sheet and the lower stator silicon steel sheet are provided with abutment rings, and a fitting groove for a magnetic cylinder to be fitted is formed between the abutment rings.

2. A brushless fuel pump core according to claim 1, wherein: The upper stator silicon steel sheet and the lower stator silicon steel sheet have mounting holes in their centers for mounting the rotor. The rotor is fitted into the mounting holes. The inner wall of the mounting holes has evenly distributed abutment terminals. A protective sleeve is provided between the abutment terminals and the rotor. The protective sleeve abuts against the abutment terminals.

3. A brushless fuel pump core according to claim 2, wherein: The oil outlet end cap includes an oil outlet base and an oil outlet cap. The surface of the oil outlet cap is provided with an oil outlet. The oil outlet base is provided with several connecting feet at one end facing the oil outlet cap. The oil outlet cap is provided with several through holes for the connecting feet to pass through. The oil outlet cap is provided with a fixing component for external fixed installation on the same side as the oil outlet.

4. A brushless fuel pump core according to claim 3, wherein: The fixing component includes a first plug-in component disposed on the same side of the oil outlet cap as the oil outlet. A snap-fit ​​component is symmetrically disposed on one side of the first plug-in component. A second plug-in component is disposed between the snap-fit ​​components. The first plug-in component, the snap-fit ​​component, and the second plug-in component are connected by reinforcing ribs. Several placement grooves are formed between the reinforcing ribs. The through hole and the connecting foot are placed in the placement grooves.

5. A brushless fuel pump core according to claim 3, wherein: The surface of the oil outlet is provided with snap-fit ​​threads, and an oil outlet valve is provided inside the oil outlet. Several positioning protrusions are provided between the oil outlet valve and the inner wall of the oil outlet.

6. A brushless fuel pump core according to claim 2, wherein: The oil inlet end cap includes an oil inlet base, an oil inlet cap is provided on one side of the oil inlet base, and an oil inlet is provided on the surface of the oil inlet base.

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