Cavity sealing structure of automobile electronic water pump

Abstract

The cavity sealing structure of the automobile electronic water pump comprises a water pump shell, a rotor assembly, a stator assembly, an electric control board assembly, a sealing ring, a heat conduction structure, a rear cover and a mounting frame, the water pump shell is fixedly connected with the stator assembly, the stator assembly is rotationally connected with the rotor assembly, the electric control board assembly is fixedly connected with the stator assembly, and the rear cover is fixedly connected with the heat conduction structure. The rear cover is connected with the stator assembly in a clamped mode, the installation frame is connected with the stator assembly in a fastened mode, the sealing ring is connected with the rear cover in a fastened mode, the stator assembly comprises a motor shell, a coil assembly and a motor shaft, the motor shell is connected with the motor shaft in a fastened mode, the coil assembly is connected with the motor shell in a fastened mode, and the motor shaft is rotationally connected with the rotor assembly. The motor shell and the rear cover form a second cavity, the sealing ring is located in the second cavity, the motor shell comprises a motor outer shell and a rotary buckle assembly, the rear cover comprises a rear cover shell body and a rotary piece, and the rotary buckle assembly is connected with the rotary piece in a clamped mode.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, specifically to a chamber sealing structure for an automotive electronic water pump. Background Technology

[0002] A car water pump is used to pressurize the coolant and ensure its circulation in the cooling system, thereby removing heat. Car water pumps are generally divided into mechanical water pumps and electronic water pumps. Mechanical water pumps are usually driven by the car engine, and the speed of the mechanical water pump is determined by the engine. Electronic water pumps are water pumps with electronic control drive units used in cars. They are usually centrifugal pumps driven by brushless DC motors. As electronic water pumps replace traditional mechanical water pumps, considering the fact that electronic water pumps have sophisticated electronic components, the chamber sealing structure of electronic water pumps has become particularly important.

[0003] However, there are two types of existing electronic water pump chamber sealing structures: one is formed by welding, and the other is formed by screw connection.

[0004] Regarding the aforementioned technologies, although the existing chamber sealing structure of electronic water pumps can achieve certain effects, the installation efficiency is reduced due to the slippage of screw connections, and welding requires equipment investment, thereby increasing costs and reducing efficiency. Therefore, those skilled in the art provide a chamber sealing structure for automotive electronic water pumps to solve the problems mentioned in the background. Utility Model Content

[0005] The purpose of this invention is to provide a chamber sealing structure for an automotive electronic water pump to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A chamber sealing structure for an automotive electronic water pump includes a water pump housing, a rotor assembly, a stator assembly, an electronic control board assembly, a sealing ring, a heat-conducting structure, a rear cover, and a mounting bracket. The water pump housing and the stator assembly are rigidly connected, the stator assembly and the rotor assembly are rotatably connected, the electronic control board assembly and the stator assembly are rigidly connected, the rear cover and the heat-conducting structure are rigidly connected, the rear cover and the stator assembly are snap-fitted together, the mounting bracket and the stator assembly are rigidly connected, and the sealing ring and the rear cover are rigidly connected. The stator assembly includes a motor housing, a coil assembly, and a motor shaft. The motor housing and the motor shaft are rigidly connected, the coil assembly and the motor housing are rigidly connected, and the motor shaft and the rotor assembly are rotatably connected. The water pump housing and the motor housing form a first chamber, and the motor housing and the rear cover form a second chamber. The sealing ring is located in the second chamber. The motor housing includes a motor outer shell and a rotary fastener assembly, which are rigidly connected. The rear cover includes a rear cover shell and a rotary vane, which are rigidly connected, and the rotary fastener assembly and the rotary vane are snap-fitted together.

[0008] By adopting the above technical solution, the water pump housing and stator assembly are connected by welding to form the first chamber for coolant flow. The coil assembly, motor housing, and motor shaft are integrally injection molded to form the stator assembly. The rotor assembly is mounted on the motor shaft. When the coil assembly is energized, the rotor assembly, which is usually equipped with magnets, rotates through the electrical control of the electronic control board assembly, thereby achieving the purpose of driving the liquid flow by rotating the rotor assembly around the motor shaft axially. A sealing ring is located in the second chamber and is tightly connected to the rear cover, which seals the second chamber and prevents liquid leakage and dust ingress. Heat is dissipated from the electronic control board assembly through a heat-conducting structure to maintain the operating temperature of the electronic components. The rear cover is snapped onto the motor housing by a snap-fit ​​assembly to seal the second chamber, achieving quick disassembly and assembly and good sealing performance, thereby improving installation efficiency and achieving cost savings. The mounting bracket is used to fix the entire water pump in a specific position on the vehicle. Therefore, it not only effectively prevents the intrusion of liquid and dust and ensures the safe operation of electronic components, but also improves production efficiency and maintenance convenience through a simplified assembly process.

[0009] Furthermore, the rotary fastener assembly includes a cover, a spring plate, and a fastener. The cover is fastened to the motor housing, the spring plate is fastened to the motor housing, the fastener and the spring plate are fastened to each other, the rotary plate and the fastener engage, the rotary plate and the cover are slidably connected, and the spring plate and the rotary plate abut against each other.

[0010] By adopting the above technical solution, the cover provides a stable base for supporting the spring plate and the latch, while allowing the rotating plate to slide on it to guide and position the rotating plate. The spring plate has a certain elasticity and can deform when force is applied to the rotating plate, providing the necessary elastic reaction force for the insertion and locking of the rotating plate. When the rotating plate is screwed into place, the spring plate can rebound, generating continuous pressure on the rotating plate to maintain the stability of the connection. The latch plays a locking role during the screwing-in process of the rotating plate. When the rotating plate is fully screwed in and reaches its final position, the latch ensures that the rotating plate is reliably fixed to the motor housing, thus completing the installation of the cover. During the installation process, the rotating plate first contacts the latch, and through the rotation action, the rotating plate slides along the cover and finally engages with the latch. The spring plate provides necessary elastic support, ensuring the vane can smoothly transition to the locked position. The vane slides along the cover surface during installation. This design not only facilitates the guidance and positioning of the vane but also reduces friction and wear during installation, improving the durability of the snap-fit ​​assembly. Once the vane is screwed in and locked in place, the spring plate and vane maintain a tight contact. This tight contact ensures the stability and sealing of the rear cover, preventing liquid leakage from inside the pump or the entry of external contaminants. Through the design of the snap-fit ​​assembly, not only is quick installation and removal of the rear cover achieved, but also good sealing of the motor chamber is ensured, effectively improving the service life and reliability of the pump. Furthermore, this design simplifies the pump maintenance process, making repair and replacement of parts more convenient and faster.

[0011] Furthermore, the buckle is provided with an guide angle.

[0012] By adopting the above technical solution, the outer side of the buckle is designed with a bevel to form an inlet angle. This bevel design is intended to guide the rotating piece to slide smoothly into and properly engage with the buckle. The presence of the inlet angle greatly reduces the frictional resistance during installation, allowing the rotating piece to reach its locking position more easily. When the rotating piece of the back cover begins to screw in and contacts the inlet angle of the buckle, the inlet angle naturally guides the rotating piece to slide towards the engaging position through its bevel. During this process, the rotating piece is guided by the inlet angle and slides down the bevel to the final engaging position of the buckle, thereby optimizing the installation process.

[0013] Furthermore, the motor shaft is provided with a retaining ring groove, and the rotor assembly includes a rotor component and a retaining ring. The retaining ring and the rotor component are fastened together, and the retaining ring groove and the retaining ring are rotatably connected.

[0014] By adopting the above technical solution, the rotor assembly is positioned on the motor shaft by using retaining rings and retaining ring grooves, thereby ensuring the stability and efficiency of the rotor assembly during long-term operation.

[0015] Furthermore, the heat-conducting structure and the electronic control board assembly are located in the second chamber.

[0016] By adopting the above technical solution and integrating the heat-conducting structure and the electronic control board assembly into the second chamber, not only is the thermal management efficiency of the electronic water pump improved, but the long-term reliability of the electronic control board assembly is also guaranteed. Good thermal management helps to extend the service life of electronic components and improve the performance and stability of the entire water pump system.

[0017] Furthermore, the rear cover is equipped with heat dissipation columns, which are connected to the second chamber.

[0018] By adopting the above technical solution, the hot air in the second chamber and the heat conducted from the heat-conducting structure are transferred to the heat dissipation column through direct physical contact. This connection method ensures that heat can be efficiently transferred from heat sources such as the electronic control board assembly to the heat dissipation column, and then dissipated to the external environment through the heat dissipation column. By dissipating heat to the outside air, the heat dissipation column effectively reduces the temperature inside the second chamber, which not only optimizes the efficiency of internal thermal management of the electronic water pump, but also helps to maintain the electronic control board assembly and other key components at the optimal operating temperature, thereby extending the life of the components and optimizing the reliability and stability of the water pump.

[0019] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0020] 1. The cover provides a stable base for supporting the spring plate and the latch, while allowing the rotating plate to slide on it for guidance and positioning. The spring plate has a certain elasticity, allowing it to deform when force is applied to the rotating plate, providing the necessary elastic reaction force for insertion and locking. When the rotating plate is screwed in, the spring plate can rebound, generating continuous pressure on the rotating plate to maintain connection stability. The latch plays a locking role during the screwing-in process. When the rotating plate is fully screwed in and reaches its final position, the latch ensures that the rotating plate is reliably fixed to the motor housing, thus completing the installation of the cover. During installation, the rotating plate first contacts the latch, and through rotation, the rotating plate slides along the cover and finally engages with the latch. During this process, the spring plate... The design provides necessary elastic support to ensure the vane smoothly transitions to the locked position. The vane slides along the cover surface during installation, facilitating its guidance and positioning, reducing friction and wear during installation, and improving the durability of the snap-fit ​​assembly. Once the vane is screwed in and locked in place, the spring plate remains in close contact with it. This tight contact ensures the stability and sealing of the rear cover, preventing liquid leakage from inside the pump or the entry of external contaminants. This snap-fit ​​assembly design not only enables quick installation and removal of the rear cover but also ensures a good seal in the motor chamber, effectively improving the pump's service life and reliability. Furthermore, this design simplifies the pump maintenance process, making repair and replacement of parts more convenient and faster.

[0021] 2. By adopting the above technical solution, the outer side of the buckle is designed with a bevel to form an inlet angle. This bevel design aims to guide the rotating piece to slide smoothly into and correctly engage with the buckle. The presence of the inlet angle greatly reduces the frictional resistance during installation, allowing the rotating piece to reach its locking position more easily. When the rotating piece of the back cover begins to screw in and contacts the inlet angle of the buckle, the inlet angle naturally guides the rotating piece to slide towards the engaging position through its bevel. During this process, the rotating piece is guided by the inlet angle and slides down the bevel to the final engaging position of the buckle, thereby optimizing the installation process.

[0022] 3. By adopting the above technical solution, the hot air in the second chamber and the heat conducted from the heat-conducting structure are transferred to the heat dissipation column through direct physical contact. This connection method ensures that heat can be efficiently transferred from heat sources such as the electronic control board assembly to the heat dissipation column, and then dissipated to the external environment through the heat dissipation column. By dissipating heat to the outside air, the heat dissipation column effectively reduces the temperature inside the second chamber, which not only optimizes the efficiency of the internal thermal management of the electronic water pump, but also helps to maintain the electronic control board assembly and other key components at the optimal operating temperature, thereby extending the life of the components and optimizing the reliability and stability of the water pump. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is an exploded view of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the stator assembly of this utility model;

[0026] Figure 3 This is a cross-sectional view of the overall structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the back cover of this utility model;

[0028] Figure 5 This is a structural schematic diagram of the motor housing of this utility model;

[0029] Figure 6 yes Figure 5 A magnified view of part A;

[0030] Figure 7 This is a schematic diagram of the snap-fit ​​assembly of the present invention.

[0031] In the diagram: 1. Pump housing; 11. First chamber; 2. Rotor assembly; 21. Rotor component; 22. Snap ring; 3. Stator assembly; 31. Motor housing; 311. Motor outer casing; 312. Snap fastener assembly; 3121. Cover; 3122. Spring piece; 3123. Snap fastener; 3124. Lead-in angle; 32. Coil assembly; 33. Motor shaft; 331. Snap ring groove; 4. Electronic control board assembly; 5. Sealing ring; 6. Heat conduction structure; 7. Rear cover; 71. Second chamber; 72. Rear cover casing; 73. Rotary vane; 74. Heat dissipation column; 8. Mounting bracket. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1-7 The present invention provides the following technical solution:

[0034] A chamber sealing structure for an automotive electronic water pump includes a water pump housing 1, a rotor assembly 2, a stator assembly 3, an electronic control board assembly 4, a sealing ring 5, a heat-conducting structure 6, a rear cover 7, and a mounting bracket. The water pump housing 1 and the stator assembly 3 are fastened together; the stator assembly 3 and the rotor assembly 2 are rotatably connected; the electronic control board assembly 4 and the stator assembly 3 are fastened together; the rear cover 7 and the heat-conducting structure 6 are fastened together; the rear cover 7 and the stator assembly 3 are snap-fitted together; the mounting bracket and the stator assembly 3 are fastened together; the sealing ring 5 and the rear cover 7 are fastened together; the stator assembly 3 includes a motor housing 31, a coil assembly 32, and a motor shaft 33. The housing 31 and the motor shaft 33 are fastened together. The coil assembly 32 and the motor housing 31 are fastened together. The motor shaft 33 and the rotor assembly 2 are rotatably connected. The pump housing 1 and the motor housing 31 form a first chamber 11. The motor housing 31 and the rear cover 7 form a second chamber 71. The sealing ring 5 is located in the second chamber 71. The motor housing 31 includes a motor outer shell 311 and a snap fastener assembly 312. The motor outer shell 311 and the snap fastener assembly 312 are fastened together. The rear cover 7 includes a rear cover shell 72 and a rotating plate 73. The rear cover shell 72 and the rotating plate 73 are fastened together. The snap fastener assembly 312 and the rotating plate 73 are engaged.

[0035] By adopting the above technical solution, the water pump housing 1 and the stator assembly 3 are connected by welding to form the first chamber 11 for coolant flow. The coil assembly 32, the motor housing 31, and the motor shaft 33 are integrally injection molded to form the stator assembly 3. The rotor assembly 2 is mounted on the motor shaft 33. When the coil assembly 32 is energized, the rotor assembly 2, which is usually equipped with magnets, is rotated through the electrical control of the control board assembly 4, thereby achieving the purpose of driving the liquid flow by rotating the rotor assembly 2 axially around the motor shaft 33. The sealing ring 5 is located in the second chamber 71 and is tightly connected to the rear cover 7, thus providing a seal. The second chamber 71 serves to prevent liquid leakage and dust ingress. Heat is dissipated from the electronic control board assembly 4 through the heat-conducting structure 6 to maintain the operating temperature of the electronic components. The rear cover 7 is snapped onto the motor housing 31 via the snap-fit ​​assembly 312, sealing the second chamber 71 and enabling quick disassembly and assembly with good sealing performance. This improves installation efficiency and saves costs. The mounting bracket is used to fix the entire water pump in a specific position on the vehicle. Therefore, it not only effectively prevents the intrusion of liquid and dust and ensures the safe operation of electronic components, but also improves production efficiency and ease of maintenance through a simplified assembly process.

[0036] Furthermore, the rotary fastener assembly 312 includes a cover portion 3121, a spring portion 3122, and a fastener portion 3123. The cover portion 3121 is fastened to the motor housing 311, the spring portion 3122 is fastened to the motor housing 311, the fastener portion 3123 is fastened to the spring portion 3122, the rotary tab 73 is engaged with the fastener portion 3123, the rotary tab 73 is slidably connected to the cover portion 3121, and the spring portion 3122 abuts against the rotary tab 73.

[0037] By adopting the above technical solution, the cover portion 3121 provides a stable base for supporting the spring portion 3122 and the latch portion 3123, while allowing the rotating piece 73 to slide on it to guide and position the rotating piece 73. The spring portion 3122 has a certain elasticity and can deform when force is applied to the rotating piece 73, providing the necessary elastic reaction force for the insertion and locking of the rotating piece 73. When the rotating piece 73 is screwed into place, the spring portion 3122 can rebound, generating continuous pressure applied to the rotating piece 73, thereby maintaining the stability of the connection. The latch portion 3123 plays a locking role during the screwing-in process of the rotating piece 73. When the rotating piece 73 is fully screwed in and reaches its final position, the latch portion 3123 ensures that the rotating piece 73 is reliably fixed on the motor housing 31, thus completing the installation of the cover 7. During the installation process, the rotating piece 73 first contacts the latch portion 3123, and through the rotation action, the rotating piece 73 slides along the cover portion 3121. Finally, it engages with the latch 3123. During this process, the spring piece 3122 provides the necessary elastic support to ensure that the vane 73 can smoothly transition to the locked position. The vane 73 slides along the surface of the cover 3121 during installation. This design not only facilitates the guidance and positioning of the vane 73, but also reduces friction and wear during installation, improving the durability of the snap fastener assembly 312. After the vane 73 is screwed in and locked in place, the spring piece 3122 and the vane 73 maintain a tight contact. This tight contact ensures the stability and sealing of the rear cover 7, preventing liquid leakage inside the water pump or the entry of external contaminants. Through the design of the snap fastener assembly 312, not only is the quick installation and removal of the rear cover 7 achieved, but also the good sealing of the motor chamber is ensured, effectively improving the service life and reliability of the water pump. In addition, this design simplifies the water pump maintenance process, making repair and replacement of parts more convenient and faster.

[0038] Furthermore, the buckle 3123 is provided with an guide angle 3124.

[0039] By adopting the above technical solution, the outer side of the buckle 3123 is designed with a bevel to form an inlet angle 3124. This bevel design is intended to guide the rotating piece 73 to slide smoothly into and correctly engage with the buckle 3123. The presence of the inlet angle 3124 greatly reduces the frictional resistance during installation, allowing the rotating piece 73 to reach its locking position more easily. When the rotating piece 73 of the back cover 7 begins to screw in and contacts the inlet angle 3124 of the buckle 3123, the inlet angle 3124 naturally guides the rotating piece 73 to slide towards the engaging position through its bevel. During this process, the rotating piece 73 is guided by the inlet angle 3124 and slides down the bevel to the final engaging position of the buckle 3123, thereby optimizing the installation process.

[0040] Furthermore, the motor shaft 33 is provided with a retaining ring groove 331, and the rotor assembly 2 includes a rotor component 21 and a retaining ring 22. The retaining ring 22 and the rotor component 21 are fastened together, and the retaining ring groove 331 and the retaining ring 22 are rotatably connected.

[0041] By adopting the above technical solution, the rotor assembly 2 is limited to the position of the motor shaft 33 by the retaining ring 22 and the retaining ring groove 331, thereby ensuring the stability and efficiency of the rotor assembly 2 during long-term operation.

[0042] Furthermore, the heat-conducting structure 6 and the electronic control board assembly 4 are located within the second chamber 71.

[0043] By adopting the above technical solution, and integrating the heat-conducting structure 6 and the electronic control board assembly 4 into the second chamber 71, not only is the thermal management efficiency of the electronic water pump improved, but the long-term reliability of the electronic control board assembly 4 is also guaranteed. Good thermal management helps to extend the service life of electronic components and improve the performance and stability of the entire water pump system.

[0044] Furthermore, the rear cover 7 is provided with a heat dissipation column 74, which is connected to the second chamber 71.

[0045] By adopting the above technical solution, the heat from the hot air in the second chamber 71 and the heat conducted from the heat-conducting structure 6 is transferred to the heat dissipation column 74 through direct physical contact. This connection method ensures that heat can be efficiently transferred from heat sources such as the electronic control board assembly 4 to the heat dissipation column 74, and then dissipated to the external environment through the heat dissipation column 74. By dissipating heat to the outside air, the heat dissipation column 74 effectively reduces the temperature inside the second chamber 71, which not only optimizes the efficiency of internal thermal management of the electronic water pump, but also helps to maintain the electronic control board assembly 4 and other key components at the optimal operating temperature, thereby extending the life of the components and optimizing the reliability and stability of the water pump.

[0046] The working principle of this utility model is as follows: The water pump housing and stator assembly are welded and fixed to form a first chamber for coolant circulation. The tight connection between the electronic control board and the stator assembly and the rotational connection of the rotor assembly on the motor shaft realize liquid drive. The sealing ring and heat-conducting structure in the second chamber are tightly connected to the rear cover, and the heat dissipation column on the rear cover ensures the temperature control and sealing of the electronic components. When screwed in, the rotating plate of the rear cover first contacts the buckle of the motor housing. Since the buckle structure is on the spring plate, the spring plate deforms after the buckle is pressed. After the rotating plate of the rear cover is completely screwed into the cover of the motor housing, the upper part of the buckle is pressed and the spring plate does not spring back. The buckle locks the rotating plate of the rear cover and realizes the quick snap-fit ​​of the rear cover through the buckle assembly, which optimizes the overall thermal management and maintenance convenience.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A chamber sealing structure for an automotive electronic water pump, characterized in that: The chamber sealing structure of an automobile electronic water pump comprises a water pump housing (1), a rotor assembly (2), a stator assembly (3), an electric control board assembly (4), a sealing ring (5), a heat-conducting structure (6), a rear cover (7) and a mounting frame (8); the water pump housing (1) and the stator assembly (3) are fastened together; the stator assembly (3) and the rotor assembly (2) are rotatably connected; the electric control board assembly (4) and the stator assembly (3) are fastened together; the rear cover (7) and the heat-conducting structure (6) are fastened together; the rear cover (7) and the stator assembly (3) are snap-fitted; the mounting frame (8) and the stator assembly (3) are fastened together; the sealing ring (5) and the rear cover (7) are fastened together; the stator assembly (3) comprises a motor housing (31), a coil assembly (32) and a motor shaft (33); The motor housing (31) and the motor shaft (33) are tightly connected, the coil assembly (32) and the motor housing (31) are tightly connected, the motor shaft (33) and the rotor assembly (2) are rotatably connected, the water pump housing (1) and the motor housing (31) form a first chamber (11), the motor housing (31) and the rear cover (7) form a second chamber (71), the sealing ring (5) is located in the second chamber (71), the motor housing (31) comprises a motor housing (311) and a spindle assembly (312), the motor housing (311) and the spindle assembly (312) are tightly connected, the rear cover (7) comprises a rear cover shell (72) and a spinner (73), the rear cover shell (72) and the spinner (73) are tightly connected, and the spinner assembly (312) and the spinner (73) are snap-fitted.

2. The chamber sealing structure of an automotive electronic water pump according to claim 1, characterized in that: The rotary buckle assembly (312) comprises a cover portion (3121), a spring sheet portion (3122) and a buckle portion (3123); the cover portion (3121) and the motor housing (311) are fastened together; the spring sheet portion (3122) and the motor housing (311) are fastened together; the buckle portion (3123) and the spring sheet portion (3122) are fastened together; the rotary piece (73) and the buckle portion (3123) are snap-fitted together; the rotary piece (73) and the cover portion (3121) are slidably connected; and the spring sheet portion (3122) and the rotary piece (73) are in abutment with each other.

3. The chamber sealing structure of an automotive electronic water pump according to claim 2, characterized in that: The buckle portion (3123) is provided with an introduction angle (3124).

4. The chamber sealing structure of an automotive electronic water pump according to claim 1, characterized in that: The motor shaft (33) is provided with a clamping ring groove (331), the rotor assembly (2) comprises a rotor component (21) and a clamping ring (22), the clamping ring (22) and the rotor component (21) are tightly connected, and the clamping ring groove (331) and the clamping ring (22) are rotatably connected.

5. The chamber sealing structure of an automotive electronic water pump according to claim 1, characterized in that: The heat-conducting structure (6) and the electric control board assembly (4) are located in the second chamber (71).

6. The chamber sealing structure of an automotive electronic water pump according to claim 1, characterized in that: The rear cover (7) is provided with a heat dissipation column (74), and the heat dissipation column (74) is in communication with the second chamber (71).

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