Automobile electronic water pump with novel structure

Abstract

The utility model discloses an automobile electronic water pump with a novel structure, which belongs to the technical field of water pumps, and comprises a water pump shell, a rotor assembly, a waterproof assembly, a motor shell assembly, an electric control board, a mounting assembly and a terminal pin assembly, the rotor assembly is rotatably connected with the waterproof assembly, the waterproof assembly is fixedly connected with the installation assembly, the electric control board is fixedly connected with the motor shell assembly, the electric control board is electrically connected with the rotor assembly, the terminal pin assembly is fixedly connected with the motor shell assembly, and the installation assembly comprises an installation frame, an installation sleeve, a pressing ring, a sealing ring, a rear cover and fastening screws. The mounting frame is in fastening connection with the waterproof assembly, the mounting frame is in fastening connection with the mounting sleeve, the pressing ring is in fastening connection with the motor shell assembly, the pressing ring is in fastening connection with the mounting frame, the sealing ring is in fastening connection with the motor shell assembly, the fastening screw is in fastening connection with the rear cover, and the fastening screw is in fastening connection with the motor shell assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to an automotive electronic water pump with a new structure. Background Art

[0002] With the development of society and the rapid development of the automobile industry, the requirements for automobile performance are becoming higher and higher, especially in terms of improving fuel economy, reducing emissions, and improving driving efficiency. In this context, the automobile cooling system is a key part to ensure the normal operation of the engine. Its importance is self-evident, and the water pump is the key component of the cooling system.

[0003] However, traditional mechanical water pumps can no longer fully meet the needs of modern automobiles. Therefore, the application of electronic water pumps has gradually become a development trend in the industry. Electronic water pumps are driven by motors and achieve temperature control by adjusting the cooling flow.

[0004] Regarding the above-mentioned related technologies, although the use of electronic water pumps has achieved certain results, the existing structure water pumps are large in size and low in power, the installation size in the whole vehicle is limited, and long-term friction will also lead to reduced service life and efficiency. Therefore, technical personnel in this field provide a new structure of automotive electronic water pump to solve the problems raised in the above background. Utility Model Content

[0005] The purpose of the utility model is to provide an automotive electronic water pump with a new structure to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A novel structure of an automotive electronic water pump comprises a water pump housing, a rotor assembly, a water barrier assembly, a motor housing assembly, an electric control board assembly, a mounting assembly and a terminal pin assembly. The water pump housing and the mounting assembly are fastened together, the rotor assembly and the water barrier assembly are rotationally connected, the water barrier assembly and the mounting assembly are fastened together, the electric control board assembly and the motor housing assembly are fastened together, the electric control board assembly and the rotor assembly are electrically connected, and the terminal pin assembly and the motor housing assembly are fastened together.

[0008] By adopting the above technical scheme, the basic structure and sealing environment of the water pump are provided by the water pump housing to protect the internal components from the external environment. The installation assembly is used to assemble the water pump and fix the water pump at a specific position of the car to ensure its stability. The rotor assembly is responsible for generating fluid power to promote the flow of coolant. The water isolation assembly is used to isolate water and electricity to prevent the motor part from being damaged due to water intrusion. The motor housing assembly not only provides structural support but also protects the motor from physical damage. The electronic control board assembly is responsible for the electrical control of the electronic water pump, including power regulation, overload protection and communication with other electronic systems of the car. The terminal pin assembly provides a transmission channel for electrical energy from the vehicle to the electronic control board to ensure the power supply of the electronic water pump.

[0009] Furthermore, the rotor assembly includes an impeller cover, a lower impeller, a front bearing, a rotor core, a magnet, a rotor steel sleeve, a core plastic coating and a rear bearing. The impeller cover and the lower impeller are tightly connected, the front bearing and the rotor core are tightly connected, the magnet is a surface-mounted structure, the magnet is attached to the surface of the rotor core, the magnet is in a ring shape, and the magnet has a large arc surface with some annular arc angles removed on both sides. The rotor steel sleeve and the core plastic coating are tightly connected, and the rear bearing and the water-blocking assembly are rotatably connected.

[0010] By adopting the above technical solution, the impeller cover and the lower impeller together constitute the power output part of the water pump, which is responsible for converting the rotational power of the motor into fluid power. It still maintains stability and sealing at high-speed rotation, and is connected to the rotor core through the front bearing to ensure smooth rotation of the rotor and good positioning, thereby reducing friction and extending service life. The annular design of the magnetic steel helps to optimize the magnetic field distribution, thereby improving the efficiency of the motor. The rotor steel sleeve and the core plastic coating are used to provide additional mechanical strength and protect the core, and the core plastic coating plays a role of electrical insulation and further protection. The rear bearing is connected to the water-blocking assembly to achieve smooth rotation of the rotor while maintaining a good seal, so that the water pump can perform cooling circulation more effectively while reducing energy loss and maintenance requirements.

[0011] Furthermore, the motor housing assembly includes a stator core, a pin frame, a short frame, enameled wire, a stator pin, an injection molded body and a casing, the stator core and the pin frame are fastened together, the short frame and the enameled wire are fastened together, the stator pin and the injection molded body are fastened together, the injection molded body and the casing are fastened together, a first annular rib and a second annular rib are provided on the casing, the first annular rib and the second annular rib are fastened together, and the water pump casing and the water barrier assembly are welded to form a first chamber and a accommodating chamber.

[0012] By adopting the above technical solution, the stator core is the static part of the motor, and its main function is to generate a magnetic field. It is tightly connected to the pin frame. This structure is designed to fix and support the stator winding. The short frame provides structural support for the enameled wire, which is wound on the stator core to form the stator winding. These windings generate a magnetic field when energized. The stator pins provide electrical connection points for the motor. The injection molded body fixes the stator pins and provides electrical insulation to ensure the safety of the electrical connection. The tight connection between the injection molded body and the casing provides additional structural strength and protection to ensure that the motor assembly is protected from the external environment. The first annular rib and the second annular rib increase the structural strength of the casing, which helps to resist external pressure and impact, and also improves the sealing performance to prevent liquid and impurities from entering the motor. The first chamber and the accommodating chamber formed by welding provide isolation for the motor and the water pump part to prevent the working medium of the water pump from directly contacting the motor, thereby ensuring the safe operation of the motor, thereby optimizing the circulation of the coolant and the efficient and stable operation of the system.

[0013] Furthermore, the water-blocking assembly includes a water-blocking sleeve and a motor shaft, and the water-blocking sleeve is provided with a third annular convex rib, a fourth annular convex rib, and a fifth annular convex rib. The fourth annular convex rib and the fifth annular convex rib are connected to each other through a second welding rib auxiliary groove, the third annular rib is connected to the first annular rib, the first annular rib and the second annular rib, and the second annular rib and the third annular rib are all connected through welding auxiliary grooves, and the fourth annular convex rib of the water-blocking assembly is welded to the second annular convex rib of the motor housing assembly to form a third chamber, a first accommodating chamber, and a second accommodating chamber.

[0014] By adopting the above technical scheme, the third annular convex rib, the fourth annular convex rib and the fifth annular convex rib on the watertight sleeve not only enhance the strength of the structure, but also achieve close fit and sealing with the motor shaft through the application of welding rib auxiliary grooves. The fourth annular convex rib and the fifth annular convex rib are connected by the second welding rib auxiliary groove, which increases the stability and sealing of the structure. The third annular convex rib is connected to the first annular convex rib of the motor housing assembly by the welding auxiliary groove, which ensures the sealing performance between the watertight assembly and the motor housing and prevents moisture from entering the interior of the motor. By welding the fourth annular convex rib of the watertight assembly to the second annular convex rib of the motor housing assembly, a third chamber, a first accommodating chamber and a second accommodating chamber are formed. These chambers may be used to further enhance the isolation performance of the electronic water pump and provide additional protection for the motor and electronic components, thereby achieving the purpose of improving efficiency, reducing maintenance requirements and extending the life of the entire system.

[0015] Furthermore, the installation assembly includes a mounting frame, a mounting sleeve, a pressure ring, a first sealing ring, a heat dissipation strip, a back cover, a first fastening screw, a second sealing ring and a second fastening screw. The mounting frame and the mounting sleeve are fastened together, the pressure ring and the mounting frame are fastened together, the first sealing ring and the terminal pin assembly are fastened together, the heat dissipation strip and the back cover are fastened together, the first fastening screw and the back cover are fastened together, the first fastening screw and the motor housing assembly are fastened together, the second sealing ring and the terminal pin assembly are fastened together, the second sealing ring and the motor housing assembly are fastened together, the second fastening screw and the terminal pin assembly are fastened together, and the second fastening screw and the motor housing assembly are fastened together.

[0016] By adopting the above technical solution, a stable supporting structure is provided for the electronic water pump through the fastening connection between the mounting frame and the mounting sleeve, ensuring that it is reliably fixed in the designated position of the car. The mounting frame is fastened to the mounting frame by the pressure ring, which enhances the fixing strength of the structure and helps to reduce vibration and noise. The first sealing ring and the second sealing ring are fastened to the terminal pin assembly respectively. The function of these sealing rings is to prevent moisture and impurities from entering the interior of the motor and protect the integrity of the electrical connection. The heat dissipation strip is fastened to the rear cover to enhance the heat dissipation performance of the electronic water pump and maintain the normal operating temperature of the motor and the electronic control board. The first fastening screw and the second fastening screw are respectively used to fix the rear cover, the motor housing assembly and the terminal pin assembly, ensuring the stability and sealing of the entire electronic water pump assembly, thereby achieving the effect of optimizing heat dissipation and effective sealing.

[0017] Furthermore, the injection molded body is provided with a first positioning boss, a first positioning support surface and a first positioning groove, and the pin skeleton is provided with a second positioning boss, a second positioning support surface and a second positioning groove. After corresponding assembly and fixation, the enameled wire is hung and clamped.

[0018] Furthermore, the stator core includes an axial positioning boss, a first radial anti-rotation groove is provided on the stator core, the casing includes an axial support boss and an assembly guide boss, a second radial anti-rotation groove is provided on the casing, the axial positioning boss of the stator core is evenly distributed around the circumference according to the number of winding grooves, the first radial anti-rotation groove is provided between two adjacent axial positioning bosses, a positioning structure is provided at the same position on the casing, and is fixed by interference fit.

[0019] By adopting the above technical solution, the injection molded body is used to align with the corresponding elements on the pin skeleton, the first positioning boss and the first positioning groove provide physical docking points, and the first positioning support surface ensures stable support in the vertical direction. After positioning and fixing, the next step is the hanging and clamping process of the enameled wire. Hanging refers to placing the enameled wire on the stator or other components of the motor according to design requirements, and clamping is the process of connecting the enameled wire to the specified contact or terminal, so as to achieve the purpose of improving production efficiency and reducing assembly errors.

[0020] Furthermore, the mounting frame is provided with a stop-rotation fixing column with an installation guide, the stop-rotation fixing column abuts against the electric control board assembly, the stop-rotation fixing columns are evenly distributed around the circumference, the electric control board assembly is provided with installation stop-rotation grooves that are evenly distributed around the circumference and whose positions correspond to the stop-rotation fixing columns on the casing, and the electric control board assembly and the stator pins are fastened and connected.

[0021] Align the electric control board assembly with the anti-rotation fixing post on the mounting frame, use the installation guide to smoothly lower the electric control board assembly and dock it with the anti-rotation fixing post, check whether the anti-rotation groove on the electric control board assembly is correctly aligned with the anti-rotation fixing post, ensure that the grooves evenly distributed on the circumference are tightly matched with the fixing post, use appropriate fastening methods to connect the electric control board assembly to the stator pins, ensure the stability of the electrical connection, thereby achieving accurate assembly, improving assembly efficiency, and facilitating maintenance and replacement.

[0022] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0023] 1. The stator core is the static part of the motor. Its main function is to generate a magnetic field. It is tightly connected to the pin frame. This structure is designed to fix and support the stator winding. The short frame provides structural support for the enameled wire, which is wound around the stator core to form the stator winding. These windings generate a magnetic field when powered on. The stator pins provide electrical connection points for the motor. The injection molded body fixes the stator pins and provides electrical insulation to ensure the safety of the electrical connection. The tight connection between the injection molded body and the casing provides additional structural strength and protection to ensure that the motor components are protected from the external environment. The first annular rib and the second annular rib increase the structural strength of the casing, which helps to resist external pressure and impact, and also improves the sealing performance to prevent liquid and impurities from entering the motor. The first chamber and the accommodating chamber formed by welding provide isolation for the motor and the water pump part to prevent the working medium of the water pump from directly contacting the motor, thereby ensuring the safe operation of the motor, thereby optimizing the circulation of the coolant and the efficient and stable operation of the system.

[0024] 2. Through the fastening connection between the mounting frame and the mounting sleeve, a stable supporting structure is provided for the electronic water pump to ensure that it is reliably fixed in the designated position of the car. The mounting frame is fastened with a pressure ring to enhance the fixing strength of the structure, which helps to reduce vibration and noise. The first sealing ring and the second sealing ring are fastened to the terminal pin assembly respectively. The function of these sealing rings is to prevent moisture and impurities from entering the interior of the motor and protect the integrity of the electrical connection. The heat dissipation strip is fastened to the rear cover to enhance the heat dissipation performance of the electronic water pump and maintain the normal operating temperature of the motor and the electronic control board. The first fastening screw and the second fastening screw are respectively used to fix the rear cover, the motor housing assembly and the terminal pin assembly to ensure the stability and sealing of the entire electronic water pump assembly, thereby achieving the effect of optimizing heat dissipation and effective sealing.

[0025] 3. The impeller cover and the lower impeller together constitute the power output part of the water pump, which is responsible for converting the rotational power of the motor into fluid power. It still maintains stability and sealing at high-speed rotation. It is connected to the rotor core through the front bearing to ensure smooth rotation of the rotor and good positioning, which reduces friction and prolongs service life. The annular design of the magnetic steel helps to optimize the magnetic field distribution, thereby improving motor efficiency. The rotor steel sleeve and the core plastic coating are used to provide additional mechanical strength and protect the core, and the core plastic coating plays a role of electrical insulation and further protection. The rear bearing is connected to the water-blocking component to achieve smooth rotation of the rotor while maintaining a good seal, so that the water pump can perform cooling circulation more effectively while reducing energy loss and maintenance requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is an exploded view of the overall structure of the utility model;

[0028] Figure 2 It is a structural schematic diagram of the rotor assembly of the utility model;

[0029] Figure 3 It is a structural schematic diagram of the motor housing assembly of the utility model;

[0030] Figure 4 It is a structural schematic diagram of the water-proof set assembly of the utility model;

[0031] Figure 5 It is a structural schematic diagram of the casing of the utility model;

[0032] Figure 6 It is a schematic diagram of the structure of the third chamber, the first accommodating chamber, and the second accommodating chamber of the utility model;

[0033] Figure 7 It is a structural schematic diagram of the plastic package of the utility model;

[0034] Figure 8 It is a schematic diagram of the structure of the pin skeleton of the utility model;

[0035] Fig. 9 This is a schematic diagram of the stator core structure of the utility model;

[0036] Fig.10 It is a structural schematic diagram of the electric control panel assembly of the utility model.

[0037] In the figure: 1, water pump housing; 2, rotor assembly; 21, impeller cover; 22, lower impeller; 23, front bearing; 24, rotor core; 25, magnetic steel; 26, rotor steel sleeve; 27, core plastic package; 28, rear bearing; 3, water-blocking assembly; 31, water-blocking sleeve; 311, third annular convex rib; 312, fourth annular convex rib; 313, fifth annular convex rib; 32, motor shaft; 33, third chamber; 34, first accommodating chamber; 35, second accommodating chamber; 36, first chamber; 37, accommodating chamber; 4, motor housing assembly; 41, stator core; 411, axial positioning boss; 412, first radial anti-rotation groove; 42, pin skeleton; 421, second positioning boss; 422, second positioning support surface; 423 , second positioning groove; 43, short frame; 44, enameled wire; 45, stator pin; 46, injection molding; 461, first positioning boss; 462, first positioning support surface; 463, first positioning groove; 47, housing; 471, axial support boss; 472, assembly guide boss; 473, second radial anti-rotation groove; 474, first annular convex rib; 475, second annular convex rib; 5, electric control board assembly; 51, installation anti-rotation groove; 6, installation assembly; 61, mounting frame; 611, anti-rotation fixing column; 62, mounting sleeve; 63, pressure ring; 64, first sealing ring; 65, heat dissipation strip; 66, back cover; 67, first fastening screw; 68, second sealing ring; 69, second fastening screw; 7, terminal pin assembly. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] See also Figure 1-10 , the utility model provides a technical solution:

[0040] A new type of automotive electronic water pump comprises a water pump housing 1, a rotor assembly 2, a water barrier assembly 3, a motor housing assembly 4, an electric control board assembly 5, a mounting assembly 6 and a terminal pin assembly 7. The water pump housing 1 is fastened to the mounting assembly 6, the rotor assembly 2 is rotatably connected to the water barrier assembly 3, the water barrier assembly 3 and the mounting assembly 6 are fastened to the electric control board assembly 5 and the motor housing assembly 4, the electric control board assembly 5 and the rotor assembly 2 are electrically connected, and the terminal pin assembly 7 and the motor housing assembly 4 are fastened to each other.

[0041] By adopting the above technical scheme, the water pump housing 1 provides the basic structure and sealing environment of the water pump to protect the internal components from the external environment. The installation component 6 is used to assemble the water pump and fix the water pump at a specific position of the car to ensure its stability. The rotor component 2 is responsible for generating fluid power to promote the flow of coolant. The water isolation component 3 isolates water and electricity to prevent the motor part from being damaged due to water intrusion. The motor housing component 4 not only provides structural support but also protects the motor from physical damage. The electronic control board component 5 is responsible for the electrical control of the electronic water pump, including power regulation, overload protection and communication with other electronic systems of the car. The terminal pin component 7 provides a transmission channel for electrical energy from the vehicle to the electronic control board to ensure the power supply of the electronic water pump.

[0042] Furthermore, the rotor assembly 2 includes an impeller cover 21, a lower impeller 22, a front bearing 23, a rotor core 24, a magnet 25, a rotor steel sleeve 26, a core plastic encapsulation 27 and a rear bearing 28. The impeller cover 21 and the lower impeller 22 are tightly connected, the front bearing 23 and the rotor core 24 are tightly connected, the magnet 25 is a surface-mounted structure, the magnet 25 is attached to the surface of the rotor core 24, the magnet 25 is in a ring shape, and the magnet 25 is a large arc surface with some annular arc angles cut off on both sides. The rotor steel sleeve 26 and the core plastic encapsulation 27 are tightly connected, and the rear bearing 28 and the water-blocking assembly 3 are rotatably connected.

[0043] By adopting the above technical solution, the impeller cover 21 and the lower impeller 22 together constitute the power output part of the water pump, which is responsible for converting the rotational power of the motor into fluid power. It still maintains stability and sealing during high-speed rotation. It is connected through the front bearing 23 and the rotor core 24 to ensure smooth rotation of the rotor and good positioning, thereby reducing friction and extending service life. The annular design of the magnetic steel 25 helps to optimize the magnetic field distribution, thereby improving the efficiency of the motor. The rotor steel sleeve 26 and the core plastic coating 27 are used to provide additional mechanical strength and protect the core, and the core plastic coating 27 plays a role of electrical insulation and further protection. The rear bearing 28 is connected to the water-blocking component 3, so that the rotor can rotate smoothly while maintaining a good seal, so that the water pump can perform cooling circulation more effectively while reducing energy loss and maintenance requirements.

[0044] Furthermore, the motor housing assembly 4 includes a stator core 41, a pin frame 42, a short frame 43, an enameled wire 44, a stator pin 45, an injection molded body 46 and a casing 47. The stator core 41 and the pin frame 42 are fastened together, the short frame 43 and the enameled wire 44 are fastened together, the stator pin 45 and the injection molded body 46 are fastened together, the injection molded body 46 and the casing 47 are fastened together, and a first annular rib 474 and a second annular rib 475 are provided on the casing 47. The first annular rib 474 and the second annular rib 475 are fastened together, and the water pump casing 1 and the water barrier assembly 3 are welded to form a first chamber 36 and a accommodating chamber 37.

[0045] By adopting the above technical solution, the stator core 41 is the static part of the motor, and its main function is to generate a magnetic field. It is tightly connected to the pin frame 42. This structure is designed to fix and support the stator winding. The short frame 43 provides structural support for the enameled wire 44. The enameled wire 44 is wound on the stator core 41 to form a stator winding. These windings generate a magnetic field when powered on. The stator pins 45 provide electrical connection points for the motor. The injection molding body 46 fixes the stator pins 45 and provides electrical insulation to ensure the safety of the electrical connection. The injection molding body 46 is tightly fixed to the housing 47. The connection provides additional structural strength and protection, ensuring that the motor assembly is protected from external environmental influences. The first annular rib 474 and the second annular rib 475 increase the structural strength of the housing 47, helping to resist external pressure and impact, while also improving the sealing performance to prevent liquid and impurities from entering the interior of the motor. The first chamber 36 and the receiving chamber 37 formed by welding provide isolation for the motor and the water pump, preventing the working medium of the water pump from directly contacting the motor, thereby ensuring the safe operation of the motor, thereby optimizing the circulation of the coolant and the efficient and stable operation of the system.

[0046] Furthermore, the water-blocking assembly 3 includes a water-blocking sleeve 31 and a motor shaft 32. The water-blocking sleeve 31 is provided with a third annular convex rib 311, a fourth annular convex rib 312 and a fifth annular convex rib 313. The fourth annular convex rib 312 and the fifth annular convex rib 313 are connected via a second welding rib auxiliary groove. The third annular rib is connected to the first annular rib. The first annular rib and the second annular rib, as well as the second annular rib and the third annular rib are all connected via welding auxiliary grooves. The fourth annular rib 312 of the water-blocking assembly 3 is welded to the second annular rib 475 of the motor housing assembly 4 to form a third chamber 33, a first accommodating chamber 34 and a second accommodating chamber 35.

[0047] By adopting the above technical scheme, the third annular convex rib 311, the fourth annular convex rib 312 and the fifth annular convex rib 313 on the watertight sleeve 31 not only enhance the strength of the structure, but also achieve close fit and sealing with the motor shaft 32 through the application of welding rib auxiliary grooves. The fourth annular convex rib 312 and the fifth annular convex rib 313 are connected by the second welding rib auxiliary groove, which increases the stability and sealing of the structure. The third annular convex rib 311 is connected to the first annular convex rib 474 of the motor housing assembly 4 through the welding auxiliary groove, which ensures the sealing performance between the watertight assembly 3 and the motor housing and prevents moisture from entering the interior of the motor. By welding the fourth annular convex rib 312 of the watertight assembly 3 to the second annular convex rib 475 of the motor housing assembly 4, a third chamber 33, a first accommodating chamber 34 and a second accommodating chamber 35 are formed. These chambers may be used to further enhance the isolation performance of the electronic water pump and provide additional protection for the motor and electronic components, thereby achieving the purpose of improving efficiency, reducing maintenance requirements and extending the life of the entire system.

[0048] Furthermore, the mounting assembly 6 includes a mounting frame 61, a mounting sleeve 62, a pressure ring 63, a first sealing ring 64, a heat dissipation strip 65, a back cover 66, a first fastening screw 67, a second sealing ring 68 and a second fastening screw 69. The mounting frame 61 and the mounting sleeve 62 are fastened together, the pressure ring 63 and the mounting frame 61 are fastened together, the first sealing ring 64 and the terminal pin assembly 7 are fastened together, the heat dissipation strip 65 and the back cover 66 are fastened together, the first fastening screw 67 and the back cover 66 are fastened together, the first fastening screw 67 and the motor housing assembly 4 are fastened together, the second sealing ring 68 and the terminal pin assembly 7 are fastened together, the second sealing ring 68 and the motor housing assembly 4 are fastened together, the second fastening screw 69 and the terminal pin assembly 7 are fastened together, and the second fastening screw 69 and the motor housing assembly 4 are fastened together.

[0049] By adopting the above technical solution, through the fastening connection between the mounting frame 61 and the mounting sleeve 62, a stable supporting structure is provided for the electronic water pump to ensure that it is reliably fixed at the designated position of the car. The mounting frame 61 is fastened with the pressure ring 63 to enhance the fixing strength of the structure, which helps to reduce vibration and noise. The first sealing ring 64 and the second sealing ring 68 are fastened to the terminal pin assembly 7 respectively. The function of these sealing rings is to prevent moisture and impurities from entering the interior of the motor and protect the integrity of the electrical connection. The heat dissipation strip 65 is fastened to the rear cover 66 to enhance the heat dissipation performance of the electronic water pump and maintain the normal operating temperature of the motor and the electronic control board. The first fastening screw 67 and the second fastening screw 69 are respectively used to fix the rear cover 66, the motor housing assembly 4 and the terminal pin assembly 7 to ensure the stability and sealing of the entire electronic water pump assembly, thereby achieving the effect of optimizing heat dissipation and effective sealing.

[0050] Furthermore, the injection molded body 46 is provided with a first positioning boss 461, a first positioning support surface 462 and a first positioning groove 463, and the pin skeleton 42 is provided with a second positioning boss 421, a second positioning support surface 422 and a second positioning groove 423. After corresponding assembly and fixing, the enameled wire 44 is hung and clamped.

[0051] Furthermore, the stator core 41 includes an axial positioning boss 411, a first radial stop groove 412 is provided on the stator core 41, the housing 47 includes an axial support boss 471 and an assembly guide boss 472, a second radial stop groove 473 is provided on the housing 47, the axial positioning boss 411 of the stator core 41 is evenly distributed around the circumference according to the number of winding grooves, the first radial stop groove 412 is provided between two adjacent axial positioning bosses 411, and a positioning structure is provided at the same position on the housing 47, which is fixed by interference fit.

[0052] By adopting the above technical solution, the injection molded body 46 is used to align with the corresponding elements on the pin skeleton 42. The first positioning boss 461 and the first positioning groove 463 provide physical docking points, and the first positioning support surface 462 ensures stable support in the vertical direction. After positioning and fixing, the next step is the hanging and clamping process of the enameled wire 44. Hanging refers to placing the enameled wire 44 on the stator or other components of the motor according to design requirements, and clamping is the process of connecting the enameled wire 44 to the specified contact point or terminal, so as to achieve the purpose of improving production efficiency and reducing assembly errors.

[0053] Furthermore, the mounting frame 61 is provided with a stop-rotation fixing column 611 with an installation guide, the stop-rotation fixing column 611 abuts against the electric control board assembly 5, the stop-rotation fixing column 611 is evenly distributed around the circumference, the electric control board assembly 5 is provided with an installation stop-rotation groove 51 evenly distributed around the circumference, and the position corresponds to the stop-rotation fixing column 611 on the casing 47, and the electric control board assembly 5 and the stator pin 45 are fastened together.

[0054] By aligning the electric control board assembly 5 with the anti-rotation fixing column 611 on the mounting frame 61, the electric control board assembly 5 is smoothly lowered and docked with the anti-rotation fixing column 611 through the installation guide, check whether the anti-rotation groove on the electric control board assembly 5 is correctly aligned with the anti-rotation fixing column 611, ensure that the grooves evenly distributed on the circumference are tightly matched with the fixing column, use appropriate fastening methods to connect the electric control board assembly 5 to the stator pin 45, ensure the stability of the electrical connection, thereby achieving accurate assembly, improving assembly efficiency, and facilitating maintenance and replacement.

[0055] The working principle of the utility model is as follows: after receiving the power signal through the electric control board assembly 5, the rotor assembly 2 is driven to rotate, and the magnetic steel 25 in the rotor assembly 2 generates a magnetic field, which is transmitted through the rotor core 24, causing the entire rotor assembly 2 to rotate in the motor housing assembly 4. The rotation of the rotor assembly is supported by the front bearing 23 and the rear bearing 28 to ensure smooth operation. The rotation of the rotor assembly 2 directly drives the lower impeller 22 to rotate, promoting the flow of liquid in the water pump casing 1. The liquid is sucked in from the water pump inlet, accelerated by the impeller, and output through the outlet pipe to achieve continuous delivery of the liquid. The water-isolating assembly 3 ensures the isolation between the motor part and the liquid pumping part to prevent the liquid from entering the inside of the motor and protect the safe operation of the motor. The motor housing assembly 4 and the stator core 41 are used in combination to generate a rotating magnetic field to promote the efficient rotation of the rotor. The enameled wire 44 on the stator core 41 is excited by electric current to form a magnetic field, which interacts with the magnetic field of the rotor magnet 25 to realize the rotational power of the rotor. The entire system realizes a high-efficiency liquid pumping function through tight structural design and precise coordination between components, while ensuring the long-term stable operation and good sealing performance of the electronic water pump to prevent leakage, thereby enhancing the reliability and efficiency of the automobile cooling system. By closely combining the water pump, motor, and electronic control system, the mechanical energy generated by the rotation of the motor is effectively utilized, and the coolant is driven to flow through the rotation of the rotor assembly 2 to achieve cooling of the automobile engine system. The electronic control board receives instructions from the vehicle system and adjusts the motor speed to control the flow and pressure of the water pump to meet the cooling requirements of different working conditions. The water-isolating assembly 3 and sealing technology ensure effective isolation of water and electricity to prevent motor damage and improve the safety and reliability of the system. The mounting assembly 6 ensures that the water pump can be stably installed in a specific position of the automobile. Through efficient motor design and optimized fluid dynamics structure, a high-efficiency, low-energy cooling cycle is achieved.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A new type of automotive electronic water pump, characterized in that: The automotive electronic water pump of a novel structure comprises a water pump housing (1), a rotor assembly (2), a water barrier assembly (3), a motor housing assembly (4), an electric control board assembly (5), a mounting assembly (6) and a terminal pin assembly (7); the water pump housing (1) and the mounting assembly (6) are tightly connected; the rotor assembly (2) and the water barrier assembly (3) are rotatably connected; the water barrier assembly (3) and the mounting assembly (6) are tightly connected; the electric control board assembly (5) and the motor housing assembly (4) are tightly connected; the electric control board assembly (5) and the rotor assembly (2) are electrically connected; and the terminal pin assembly (7) and the motor housing assembly (4) are tightly connected; The rotor assembly (2) comprises an impeller cover (21), a lower impeller (22), a front bearing (23), a rotor core (24), a magnetic steel (25), a rotor steel sleeve (26), a core plastic coating (27) and a rear bearing (28); the impeller cover (21) and the lower impeller (22) are tightly connected; the front bearing (23) and the rotor core (24) are tightly connected; the magnetic steel (25) is a surface-mounted structure; the magnetic steel (25) is attached to the surface of the rotor core (24); the magnetic steel (25) is in a ring shape; the magnetic steel (25) has a circular arc surface with part of the annular arc angle cut off on both sides; the rotor steel sleeve (26) and the core plastic coating (27) are tightly connected; and the rear bearing (28) and the water-blocking assembly (3) are rotatably connected.

2. According to the novel structure of the automotive electronic water pump of claim 1, it is characterized by: The motor housing assembly (4) comprises a stator core (41), a pin frame (42), a short frame (43), an enameled wire (44), a stator pin (45), an injection molded body (46) and a casing (47); the stator core (41) and the pin frame (42) are tightly connected; the short frame (43) and the enameled wire (44) are tightly connected; the stator pin (45) and the injection molded body (46) are tightly connected; the injection molded body (46) and the casing (47) are tightly connected; a first annular convex rib (474) and a second annular convex rib (475) are provided on the casing (47); the first annular convex rib (474) and the second annular convex rib (475) are tightly connected; the water pump casing (1) and the water barrier assembly (3) form a first chamber (36) and a receiving chamber (37).

3. The automotive electronic water pump of a novel structure according to claim 2 is characterized in that: The water-blocking assembly (3) comprises a water-blocking sleeve (31) and a motor shaft (32); the water-blocking sleeve (31) is provided with a third annular convex rib (311), a fourth annular convex rib (312), and a fifth annular convex rib (313); the fourth annular convex rib (312) and the fifth annular convex rib (313) are fastened together; the third annular convex rib (311) and the first annular convex rib (474) are connected; the first annular convex rib (474) and the second annular convex rib (475), and the second annular convex rib (475) and the third annular convex rib (311) are fastened together; the fourth annular convex rib (312) of the water-blocking assembly (3) and the second annular convex rib (475) of the motor housing assembly (4) form a third chamber (33), a first accommodating chamber (34), and a second accommodating chamber (35).

4. The automotive electronic water pump of a novel structure according to claim 1 is characterized in that: The mounting assembly (6) comprises a mounting frame (61), a mounting sleeve (62), a pressure ring (63), a first sealing ring (64), a heat dissipation strip (65), a back cover (66), a first fastening screw (67), a second sealing ring (68) and a second fastening screw (69); the mounting frame (61) and the mounting sleeve (62) are fastened together, the pressure ring (63) and the mounting frame (61) are fastened together, the first sealing ring (64) and the terminal pin assembly (7) are fastened together, and the heat dissipation strip (65) is fastened together. ) and the back cover (66) are fastened together, the first fastening screw (67) and the back cover (66) are fastened together, the first fastening screw (67) and the motor housing assembly (4) are fastened together, the second sealing ring (68) and the terminal pin assembly (7) are fastened together, the second sealing ring (68) and the motor housing assembly (4) are fastened together, the second fastening screw (69) and the terminal pin assembly (7) are fastened together, and the second fastening screw (69) and the motor housing assembly (4) are fastened together.

5. The automotive electronic water pump of a novel structure according to claim 2 is characterized in that: The injection molded body (46) is provided with a first positioning boss (461), a first positioning support surface (462) and a first positioning groove (463); the plug-in pin skeleton (42) is provided with a second positioning boss (421), a second positioning support surface (422) and a second positioning groove (423); the first positioning boss (461), the first positioning support surface (462) and the first positioning groove (463) on the injection molded body (46) and the second positioning boss (421), the second positioning support surface (422) and the second positioning groove (423) on the plug-in pin skeleton (42) are correspondingly fastened and connected; the enameled wire (44) and the injection molded body (46) are fastened and connected.

6. The automotive electronic water pump of a novel structure according to claim 3 is characterized in that: The stator core (41) comprises an axial positioning boss (411), a first radial anti-rotation groove (412) is provided on the stator core (41), the housing (47) comprises an axial support boss (471) and an assembly guide boss (472), a second radial anti-rotation groove (473) is provided on the housing (47), the axial positioning boss (411) of the stator core (41) is evenly distributed around the circumference according to the number of winding grooves, and the first radial anti-rotation groove (412) is provided between two adjacent axial positioning bosses (411).

7. The automotive electronic water pump of a novel structure according to claim 4 is characterized in that: The mounting frame (61) is provided with a rotation-stopping fixing column (611), the rotation-stopping fixing column (611) abuts against the electric control board assembly (5), the rotation-stopping fixing columns (611) are evenly distributed around the circumference, the electric control board assembly (5) is provided with an installation rotation-stopping groove (51), the installation rotation-stopping groove (51) is evenly distributed, the rotation-stopping groove (51) and the rotation-stopping fixing column (611) are tightly connected, and the electric control board assembly (5) and the stator pin (45) are tightly connected.

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