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 at the center of the stator silicon steel sheet, a rotor sleeved on the rotating shaft, a housing surrounding the stator silicon steel sheet, and a magnetic cylinder between the stator silicon steel sheet and the housing. The stator silicon steel sheet includes a sleeve, the rotating shaft passes through the sleeve, and several connecting rods are evenly distributed around the outer circumference of the sleeve. The connecting rods are provided with a winding plate for winding the coil, and a connecting block is provided at the bottom of the winding plate. A connecting groove for connecting the magnetic cylinder is formed between the connecting block and the winding plate. A positioning protrusion is axially provided on the outer circumference of the winding plate, and a positioning groove is provided on the inner wall of the magnetic cylinder for positioning and installing the positioning protrusion. This achieves precise positioning and installation between the magnetic cylinder and the rotor silicon steel sheet, enhances the conversion efficiency of electrical energy to mechanical energy, improves torque output, ensures operational reliability, reduces vibration and noise during motor operation, reduces wear between components, and extends the service life of the motor.

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] Publication number CN110529312A discloses a brushless fuel pump core structure, including stator silicon steel sheets and rotor silicon steel sheets, with a rotating shaft inserted into the center of the rotor silicon steel sheets. This invention effectively reduces the assembly cost of components by plastic-coating the magnetic cylinder, rotor silicon steel sheets, and rotating shaft, greatly improving the coaxiality of the rotating shaft during rotation, and further enhancing the rotational efficiency of the rotor. The brushless fuel pump core structure is then formed by inserting the assembled rotor into the stator structure via bearings and a front bearing. This greatly reduces the high cost caused by too many parts in traditional mass production methods. Furthermore, manufacturing the stator silicon steel sheets in a split structure can significantly reduce the difficulty of mass production when winding the stator. However, there is no fixed structure between the magnetic cylinder and the rotor silicon steel sheets. During the use of the fuel pump, vibration will occur between the magnetic cylinder and the rotor silicon steel sheets, resulting in uneven force on the fuel pump, causing vibration and abnormal noise in the fuel pump core. It will also reduce the wear between the magnetic cylinder and the rotor silicon steel sheets and shorten the service life of the fuel pump core. Therefore, there is still room for improvement in this technology. 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 includes a sleeve, the rotating shaft passes through the sleeve, a plurality of connecting rods are evenly distributed on the outer periphery of the sleeve, the connecting rods are provided with a winding plate for winding a coil, a connecting block is provided at the bottom of the winding plate, a connecting groove for connecting the magnetic cylinder is formed between the connecting block and the winding plate, a positioning protrusion is axially provided on the outer periphery of the winding plate, and a positioning groove is provided on the inner wall of the magnetic cylinder for positioning and installing the positioning protrusion.

[0006] By adopting the above technical solution, the stator silicon steel sheet includes a winding plate on the connecting rod for winding the coil. The positioning protrusions axially arranged on the outer periphery of the winding plate cooperate with the positioning grooves on the inner wall of the magnetic cylinder, realizing precise positioning and installation between the magnetic cylinder and the rotor silicon steel sheet. This improves motor performance, makes the magnetic field distribution more uniform and stable, enhances the conversion efficiency of electrical energy to mechanical energy, and improves torque output. It also ensures operational reliability, reduces vibration and noise during motor operation, reduces wear between components, and extends the service life of the motor.

[0007] The aforementioned brushless fuel pump core can be further configured such that: one end of the housing is provided with an oil inlet end cap, and the other end of the housing away from the oil inlet end cap is provided with an oil outlet end cap.

[0008] By adopting the above technical solution, the oil inlet end cap and oil outlet end cap are set up to create a relatively closed and complete working space for the brushless fuel pump core. Together with the housing, they form an integral whole, protecting the internal key components such as stator silicon steel sheets, magnetic cylinder, and rotor. This prevents external dust, impurities, and moisture from entering the pump core and avoids damage to the internal precision components, thereby effectively extending the service life of the pump core.

[0009] The aforementioned brushless fuel pump core can be further configured as follows: the oil outlet end cap includes an oil outlet base, the surface of the oil outlet base is provided with an oil outlet, the outer periphery of the oil outlet is engaged with an external engagement protrusion, the two sides of the engagement protrusion are symmetrically provided with positioning strips for external connection, the sleeve is provided with a plurality of connecting feet at one end facing the oil outlet base, the oil outlet base is provided with a plurality of through holes for the connecting feet to pass through, and the oil outlet base is provided with a fixing component for fixed installation to the outside on the same side as the oil outlet.

[0010] Using the above technical solution, the snap-fit ​​protrusion on the oil outlet base facilitates snap-fit ​​with external components. The positioning strips symmetrically arranged on both sides of the snap-fit ​​protrusion further enhance the accuracy of the connection with the external components, making the docking of the oil outlet cap with the external components more accurate and ensuring the smooth flow of fuel. The fixing component located on the same side of the oil outlet can fix the oil outlet cap to the external components, further ensuring the stability of the oil outlet cap.

[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 of the outgoing base; a snap-fit ​​component is symmetrically disposed on one side of the plug-in component; a second insert 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; a plurality of placement grooves are formed between the reinforcing ribs; and the through hole and the connecting foot are placed in the placement grooves.

[0012] Using the above technical solution, the symmetrical arrangement of the snap-fit ​​parts facilitates quick snap-fit ​​with external components, enabling rapid and accurate connection between the oil outlet end cap and the outside. The placement groove formed between the reinforcing ribs provides suitable placement space for the through holes and connecting feet, allowing the through holes and connecting feet to be placed therein, avoiding mutual interference or collision between components.

[0013] The aforementioned brushless fuel pump core can be further configured such that: the oil inlet end cap includes an oil inlet base, the oil inlet base is disposed on one side of the connecting block, an oil inlet cover is provided between the oil inlet base and the connecting block, and an oil inlet is provided on the surface of the oil inlet base.

[0014] With the above technical solution, the oil inlet base is set on one side of the connecting block, and an oil inlet cap is set between the two. The oil inlet can guide the fuel to flow smoothly into the pump core, reduce the resistance and turbulence of fuel flow, improve the efficiency of fuel intake, and ensure that the pump core can continuously and stably obtain sufficient fuel supply. The oil cap can play a certain role in buffering and rectifying the incoming fuel, further optimizing the fuel flow state, so that the fuel enters the pump core in a more uniform state, which is conducive to improving the working performance of the pump core and the stability of fuel delivery.

[0015] The beneficial effects of this utility model are as follows: the positioning protrusions axially arranged on the outer periphery of the winding plate cooperate with the positioning grooves on the inner wall of the magnetic cylinder to achieve precise positioning and installation between the magnetic cylinder and the rotor silicon steel sheets, which enhances the conversion efficiency of electrical energy and mechanical energy and improves torque output; it also ensures operational reliability, reduces vibration and noise during motor operation, reduces wear between components, and extends the service life of the motor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is an exploded view of the structure of this utility model;

[0018] Figure 3 This is a structural diagram of the oil outlet cap of this utility model;

[0019] Label annotations: 1-Stator silicon steel sheet, 2-Shaft, 3-Rotor, 4-House, 5-Magnetic cylinder, 6-Sleeve, 7-Connecting rod, 8-Winding plate, 9-Connecting block, 10-Connecting groove, 11-Positioning protrusion, 12-Positioning groove, 13-Oil inlet end cap, 14-Oil outlet end cap, 15-Oil outlet base, 16-Oil outlet, 17-Snap-fit ​​protrusion, 18-Positioning strip, 19-Connecting foot, 20-Through hole, 21-First insert, 22-Snap-fit, 23-Second insert, 24-Reinforcing rib, 25-Placement groove, 26-Oil inlet base, 27-Oil inlet cap, 28-Oil inlet. Detailed Implementation

[0020] 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.

[0021] like Figure 1-3The present invention provides the following technical solution: a brushless fuel pump core, including 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 sleeved on the outer periphery of 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 including a sleeve 6, the rotating shaft 2 passing through the sleeve 6, a plurality of connecting rods 7 evenly distributed on the outer periphery of the sleeve 6, the connecting rods 7 having a winding plate 8 for winding a coil, a connecting block 9 at the bottom of the winding plate 8, a connecting groove 10 for connecting the magnetic cylinder 5 between the connecting block 9 and the winding plate 8, a positioning protrusion 11 axially arranged on the outer periphery of the winding plate 8, and a positioning groove 12 for positioning and installing the positioning protrusion 11 on the inner wall of the magnetic cylinder 5, the stator silicon steel sheet 1 including the connecting rods 7 having a winding plate 8 for winding a coil, the positioning protrusion 11 axially arranged on the outer periphery of the winding plate 8 and the positioning groove 12 on the inner wall of the magnetic cylinder 5 The two-phase combination achieves precise positioning and installation between the magnetic cylinder 5 and the silicon steel sheet of the rotor 3, improving motor performance, making the magnetic field distribution more uniform and stable, enhancing the conversion efficiency of electrical energy to mechanical energy, and increasing torque output; it also ensures operational reliability, reduces vibration and noise during motor operation, reduces wear between components, and extends the service life of the motor. One end of the housing 4 is provided with an oil inlet end cover 13, and the other end of the housing 4 away from the oil inlet end cover 13 is provided with an oil outlet end cover 14. The oil inlet end cover 13 and the oil outlet end cover 14 form a relatively closed and complete working space for the brushless fuel pump core. Together with the housing 4, they form a whole, protecting the internal key components such as the stator silicon steel sheet 1, magnetic cylinder 5, and rotor 3, preventing external dust, impurities, and moisture from entering the pump core and avoiding damage to the internal precision components, thereby effectively extending the service life of the pump core.

[0022] like Figure 1-3The present invention provides the following technical solution: a brushless fuel pump core, wherein the fuel outlet cap 14 includes a fuel outlet base 15, the surface of the fuel outlet base 15 is provided with a fuel outlet 16, the outer periphery of the fuel outlet 16 is provided with a snap-fit ​​protrusion 17 that snaps into the outside, the snap-fit ​​protrusion 17 is symmetrically provided with positioning strips 18 for connecting to the outside on both sides, the sleeve 6 is provided with a plurality of connecting feet 19 at one end facing the fuel outlet base 15, the fuel outlet base 15 is provided with a plurality of through holes 20 for the connecting feet 19 to pass through, the fuel outlet base 15 is provided with a fixing component for fixed installation to the outside on the same side of the fuel outlet 16, and the snap-fit ​​protrusion 17 on the fuel outlet base 15 facilitates the connection with the external components. The snap-fit ​​mechanism, with symmetrically arranged positioning strips 18 on both sides of the snap-fit ​​protrusion 17, further enhances the precision of the connection with the external components, making the docking of the oil outlet cap 14 with the external components more accurate and ensuring the smooth flow of fuel. A fixing component located on the same side as the oil outlet 16 can fix the oil outlet cap 14 to the external components, further ensuring the stability of the oil outlet cap 14. The fixing component includes a first insert 21 located on the same side of the oil outlet 16 on the base, with snap-fit ​​pieces 22 symmetrically arranged on one side of the insert 21, and a second insert 23 between the snap-fit ​​pieces 22. The first insert 21, snap-fit ​​pieces 22, and second insert... The components are connected by reinforcing ribs 24, which form several placement grooves 25. Through holes and connecting feet 19 are placed within these grooves. The symmetrical arrangement of the snap-fit ​​components 22 facilitates quick snap-fit ​​with external components, enabling rapid and accurate connection of the oil outlet cap 14 to the outside. The placement grooves 25 formed between the reinforcing ribs 24 provide suitable space for the through holes and connecting feet 19, allowing them to be placed without interference or collision between components. The oil inlet cap 13 includes an oil inlet base 26, which is located on one side of the connecting block 9. The oil inlet base 26 and... An oil inlet cap 27 is provided between the connecting blocks 9, and an oil inlet port 28 is provided on the surface of the oil inlet base 26. The oil inlet base 26 is located on one side of the connecting block 9, and the oil inlet cap 27 is provided between the two. The oil inlet port 28 can guide the fuel to flow smoothly into the pump core, reduce the resistance and turbulence of fuel flow, improve the efficiency of fuel intake, and ensure that the pump core can continuously and stably obtain sufficient fuel supply. The setting of the oil cap can play a certain role in buffering and rectifying the incoming fuel, further optimizing the fuel flow state, so that the fuel enters the pump core in a more uniform state, which is conducive to improving the working performance of the pump core and the stability of fuel delivery.

[0023] The beneficial effects of this utility model are as follows: The positioning protrusion 11 axially arranged on the outer periphery of the winding plate 8 cooperates with the positioning groove 12 on the inner wall of the magnetic cylinder 5, realizing precise positioning and installation between the magnetic cylinder 5 and the silicon steel sheet of the rotor 3, enhancing the conversion efficiency of electrical energy and mechanical energy, and improving torque output; it also ensures operational reliability, reduces vibration and noise during motor operation, reduces wear between components, and extends the service life of the motor.

Claims

1. A brushless fuel pump core, comprising a stator silicon steel sheet, a rotating shaft centrally located on the stator silicon steel sheet, a rotor sleeved on the rotating shaft, a housing surrounding the stator silicon steel sheet, and a magnetic cylinder positioned between the stator silicon steel sheet and the housing, characterized in that: The stator silicon steel sheet includes a sleeve, the rotating shaft passes through the sleeve, a plurality of connecting rods are evenly distributed on the outer periphery of the sleeve, the connecting rods are provided with a winding plate for winding the coil, the bottom of the winding plate is provided with a connecting block, a connecting groove for connecting the magnetic cylinder is formed between the connecting block and the winding plate, a positioning protrusion is axially provided on the outer periphery of the winding plate, and a positioning groove is provided on the inner wall of the magnetic cylinder for positioning and installing the positioning protrusion.

2. The brushless fuel pump core according to claim 1, characterized in that: One end of the housing is provided with an oil inlet cap, and the other end of the housing away from the oil inlet cap is provided with an oil outlet cap.

3. A brushless fuel pump core according to claim 2, characterized in that: The oil outlet cap includes an oil outlet base, the surface of which is provided with an oil outlet. The outer periphery of the oil outlet is connected to an external snap-fit ​​protrusion. Positioning strips for external connection are symmetrically arranged on both sides of the snap-fit ​​protrusion. The sleeve is provided with several connecting feet at one end facing the oil outlet base. The oil outlet base is provided with several through holes for the connecting feet to pass through. The oil outlet base is provided with a fixing component for fixed installation to the outside on the same side as the oil outlet.

4. A brushless fuel pump core according to claim 3, characterized in that: The fixing component includes a first plug-in component disposed on the same side of the travel base as the oil outlet. A snap-fit ​​component is symmetrically disposed on one side of the 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 groove.

5. A brushless fuel pump core according to claim 2, characterized in that: The oil inlet end cap includes an oil inlet base, which is disposed on one side of the connecting block. An oil inlet cover is provided between the oil inlet base and the connecting block, and an oil inlet is provided on the surface of the oil inlet base.

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