Electronic water pump motor and electronic water pump

Abstract

The embodiment of the present application discloses an electronic water pump motor and an electronic water pump, wherein the electronic water pump motor comprises: a stator core, a mounting ear is provided on the outer peripheral side of the stator core, and the mounting ear and the stator core are integrally formed; a housing, and the housing and the stator core are integrally injection molded; the mounting ear is radially protruding from the main body of the water pump motor, and a mounting hole is provided on the mounting ear along the axial direction of the stator core. Through the embodiment of the present application, the structure of the electronic water pump motor can be simplified while satisfying the connection strength between the electronic water pump motor and the external structure, thereby reducing the manufacturing cost of the electronic water pump motor.

Description

Technical Field

[0001] The present application relates to the field of electronic water pumps for automobile accessories, and in particular to an electronic water pump motor and an electronic water pump. Background Art

[0002] As the automotive industry continues to increase its requirements for energy conservation and environmental protection, electronic water pumps are gradually replacing mechanical water pumps as the mainstream automotive cooling solution. In response to the trend of reducing costs and increasing efficiency, more and more manufacturers choose to use injection molding technology to manufacture the housing of electronic water pumps. However, since electronic water pumps need to be connected to external structures (such as the engine block), especially for high-power applications, a simple injection molding housing may not provide sufficient connection strength.

[0003] The solutions currently on the market can be divided into two categories:

[0004] Metal casing solution: To ensure high-strength connection, some manufacturers continue to use metal materials to make the casing of the electronic water pump, and design and install hanging feet on the casing to achieve bolt connection with the engine. Although this method can meet the strength requirements, the processing complexity of the metal casing is high, the production cost is high, which is not conducive to achieving the goal of reducing costs and increasing efficiency.

[0005] Injection molded housing plus clamp solution: Another common practice is to use a lower-cost injection molded housing and add an additional clamp part to enhance the connection strength with the external structure. Although this method reduces the cost of the housing itself, it adds additional parts and assembly steps, resulting in no significant reduction in overall cost, which is also not in line with the principle of reducing costs and increasing efficiency. Summary of the invention

[0006] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides an electronic water pump motor and an electronic water pump to solve the problem that the production cost of the electronic water pump motor in the prior art is high and is not conducive to cost reduction and efficiency improvement.

[0007] The purpose of this application can be achieved through the following technical solutions:

[0008] In a first aspect, the present application provides an electronic water pump motor, the electronic water pump motor comprising:

[0009] The stator core has mounting ears disposed on the outer circumference of the stator core, and the mounting ears are integrally formed with the stator core;

[0010] The casing and the stator core are integrally injection molded;

[0011] The mounting ear is located in the radial direction of the water pump motor and protrudes from the water pump motor body, and a mounting hole is opened on the mounting ear along the axial direction of the stator iron core.

[0012] By providing mounting ears integrally formed with the stator core on the periphery of the stator core, and making the mounting ears protrude from the motor body and provided with axial mounting holes, the electronic water pump motor can be connected to the external structure (such as the engine cylinder block) through the mounting ears, which reduces the overall volume and cost compared to the prior art that requires auxiliary connection through a clamp. The housing can also be formed by injection molding, which further reduces the cost compared to the prior art that uses a metal housing.

[0013] Optionally, the housing wraps around an outer surface of the mounting ear.

[0014] Wrapping the outer surface of the mounting ear with the casing can protect the mounting ear and prevent it from being corroded by the external environment. At the same time, it also enhances the connection strength between the mounting ear and the casing, further improving the stability of the overall structure.

[0015] Optionally, a structural hole is opened on the mounting ear along the axial direction of the stator core, and the casing fills the structural hole.

[0016] The setting of the structural hole can reduce the weight of the mounting ear without affecting the overall strength of the mounting ear, which is beneficial to reducing the overall weight of the electronic water pump motor and improving its operating efficiency; the casing fills the structural hole, making the connection between the mounting ear and the casing tighter and enhancing the strength of the overall structure.

[0017] Optionally, reinforcing ribs are provided between the mounting ears and the stator core.

[0018] The setting of the reinforcing ribs can effectively improve the connection strength between the mounting ear and the casing, enhance the rigidity of the entire electronic water pump motor structure, enable it to withstand greater external forces, ensure the reliability of the connection structure during operation, and prevent the connection from loosening or being damaged due to vibration or other external forces.

[0019] Optionally, the reinforcing ribs and the housing are integrally injection molded.

[0020] The integral injection molding of the reinforcing ribs and the casing not only simplifies the production process, reduces the number of parts and reduces production costs, but also ensures that the connection strength between the reinforcing ribs and the casing is uniform, avoiding the problem of affecting the overall structural strength due to weak connection parts, and further improving the overall performance and reliability of the electronic water pump motor.

[0021] Optionally, there is an arc transition between the mounting ear and the outer circumference of the stator core.

[0022] The arc transition can avoid cracks or damage at the connection between the mounting ear and the outer circumference of the stator core due to stress concentration, thereby improving the fatigue life of the structure. At the same time, the arc transition design also makes the electronic water pump motor more beautiful in appearance and is not easy to scratch other components or operators during installation.

[0023] Optionally, a plurality of mounting ears are provided, and the plurality of mounting ears are evenly distributed along the outer circumference of the stator core.

[0024] Multiple evenly distributed mounting ears can make the electronic water pump motor more evenly stressed when connected to the external structure, disperse the load borne by the connection point, and improve the stability and reliability of the connection; at the same time, the design of multiple mounting ears also increases the flexibility of the connection method, which can adapt to different installation requirements and working conditions.

[0025] Optionally, the mounting ear is arranged at one end of the motor axial direction close to the motor output shaft.

[0026] Setting the mounting ear at one end close to the motor output shaft is beneficial to optimizing the layout of the electronic water pump motor in the entire electronic water pump system, making the force transmission path more reasonable, reducing additional bending moment or torque caused by improper installation position, thereby improving the overall operating stability of the electronic water pump.

[0027] In a second aspect, the present application also provides an electronic water pump, which includes a pump cover and the electronic water pump motor as described above.

[0028] The electronic water pump is combined with the electronic water pump motor having multiple excellent characteristics, making the overall structure of the electronic water pump more reasonable and reliable; while ensuring the connection strength with the external structure, the production cost is reduced and the production efficiency is improved.

[0029] Optionally, the pump cover is arranged at one end of the casing and is connected to the casing by hot melt.

[0030] The pump cover and the casing are connected by hot-melt connection, which is firm and reliable, can effectively prevent liquid leakage, and ensure the sealing of the electronic water pump; at the same time, the hot-melt connection process is relatively simple and easy to realize automated production, which improves production efficiency and reduces production costs. It can also make the connection between the pump cover and the casing tighter and more beautiful, thereby enhancing the overall performance of the electronic water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present application is further described below in conjunction with the accompanying drawings.

[0032] Figure 1 It is a structural schematic diagram showing the number and position relationship of the stator core and the mounting ears in one of the embodiments of the present application;

[0033] Figure 2 It is a structural schematic diagram showing the positional relationship between the housing, the stator core and the mounting ears in one of the embodiments of the present application;

[0034] Figure 3 is a cross-sectional view showing the positional relationship between the stator core and the housing of a water pump motor in one of the embodiments of the present application;

[0035] Figure 4 is a structural schematic diagram showing the number and position relationship of the stator core and the mounting ears in another embodiment of the present application;

[0036] Figure 5 It is a schematic diagram of the structure of an electronic water pump assembled with a casing and a pump cover in one of the embodiments of the present application.

[0037] Description of reference numerals:

[0038] 1. Stator core; 2. Casing; 3. Mounting ears; 4. Mounting holes; 5. Structural holes; 6. Reinforcement ribs; 7. Pump cover; 8. Connectors. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] See also Figure 1-3 As shown, in some embodiments, the present application provides an electronic water pump motor, which includes a stator core 1 and a housing 2. A mounting ear 3 is provided on the outer peripheral side of the stator core 1, and the mounting ear 3 is integrally formed with the stator core 1. Specifically, the mounting ear 3 and the stator core 1 can be formed by stacking and stamping a plurality of core punching sheets along the axial direction of the stator core 1. This integrated structure ensures that the mounting ear 3 and the stator core 1 have extremely high connection strength, and the mounting ear 3 and the stator core 1 can be made of the same metal material, which further ensures that the mounting ear 3 itself has extremely high structural strength, so that the electronic water pump motor can be directly connected to the external structure (such as the engine cylinder block or other components of the electronic water pump) through the mounting ear 3, meeting the connection strength requirements between the electronic water pump motor and the external structure. Compared with the prior art of using a clamp to mount the electronic water pump motor on the external structure, the use of the clamp is reduced, the overall structure is simplified, and the production cost is reduced.

[0041] The housing 2 and the stator core 1 are integrally injection molded, and the housing 2 material tightly wraps the stator core 1 to form an integral structure. The housing 2 is made of injection molding material, which not only simplifies the assembly process of the motor, reduces the number of parts, and reduces production costs compared to the metal housing 2 used in the prior art, but also makes the housing 2 and the stator core 1 fit more closely through the injection molding process, thereby improving the stability of the overall structure of the motor.

[0042] The mounting ears 3 protrude from the main body of the water pump motor in the radial direction of the water pump motor, so that the mounting ears 3 can be easily connected to the external structure (such as the engine cylinder or other components of the electronic water pump). The mounting ears 3 are provided with mounting holes 4 along the axial direction of the stator core 1. The existence of the mounting holes 4 allows the electronic water pump motor to be connected with bolts, screws, etc. (see FIG. Figure 5 ) is fixedly connected to the external structure, ensuring the accurate installation position and reliable fixation of the electronic water pump motor in the entire system.

[0043] The integrally formed mounting ear 3 and stator core 1 as well as the integrally injection-molded housing 2 and stator core 1 together improve the structural strength and stability of the electronic water pump motor, facilitate the installation of the electronic water pump motor and the external structure, reduce the risk of failure due to structural looseness, and extend the service life of the motor.

[0044] In some embodiments, the housing 2 completely covers the outer surface of the mounting ear 3 to form a continuous coating structure. The material of the housing 2 fits the shape of the mounting ear 3 tightly, and there is no gap or crack between the housing 2 and the mounting ear 3, ensuring that the housing 2 provides all-round protection for the mounting ear 3. The housing 2 completely covers the outer surface of the mounting ear 3 to form a continuous coating structure. The mounting ear 3 is prevented from being eroded by external environmental factors (such as moisture, dust, corrosive media, etc.), thereby maintaining the structural integrity and performance stability of the mounting ear 3. At the same time, the connection strength between the mounting ear 3 and the housing 2 is further enhanced, so that the two form a tighter overall structure. During the operation of the electronic water pump motor, when subjected to external forces such as vibration and impact, the housing 2 can better support and protect the mounting ear 3, prevent the mounting ear 3 from being deformed or damaged, and ensure the reliability of the electronic water pump motor's connection with the outside.

[0045] Furthermore, a through structural hole 5 is formed on the mounting ear 3 along the axial direction of the stator core 1. The shape and size of the structural hole 5 can be determined according to specific design requirements, such as round, square, or other shapes. During the injection molding process of the housing 2, the plastic material fills into the structural hole 5, completely filling the structural hole 5, so that the housing 2 and the mounting ear 3 form an integrated structure at the structural hole 5.

[0046] The setting of the structural hole 5 effectively reduces the weight of the mounting ear 3 without significantly affecting the overall strength of the mounting ear 3, which helps to reduce the overall weight of the electronic water pump motor, thereby reducing the load on equipment such as automobile engines to a certain extent and improving energy utilization efficiency.

[0047] Filling the structural hole 5 of the housing 2 enhances the connection strength between the mounting ear 3 and the housing 2, making the combination between the two tighter. When subjected to external force, the housing 2 and the mounting ear 3 can work together better and bear the load together, thereby improving the reliability and stability of the electronic water pump motor structure.

[0048] In some embodiments, a reinforcing rib 6 is provided between the mounting ear 3 and the housing 2, and its shape can be a straight line, a broken line or other reasonable shape, and is designed according to the structural characteristics of the mounting ear 3 and the housing 2 and the stress conditions. One end of the reinforcing rib 6 is connected to the mounting ear 3, and the other end is connected to the housing 2, forming a support system of a triangle or other stable structure, which significantly improves the connection strength between the mounting ear 3 and the housing 2 and enhances the rigidity of the overall structure of the electronic water pump motor. When the electronic water pump motor is subjected to vibration, impact or other external forces during operation, the reinforcing rib 6 can effectively transmit and disperse the load, prevent the mounting ear 3 from loosening or separating from the housing 2, and ensure the reliability of the connection. The mechanical properties of the electronic water pump motor are improved, so that it can withstand a larger workload, improve the stability and durability of the electronic water pump motor under complex working conditions, extend the service life, and reduce the maintenance and replacement costs caused by structural damage.

[0049] Furthermore, in the manufacturing process of the electronic water pump motor, the reinforcing rib 6 and the housing 2 are formed simultaneously by the injection molding process. The material of the reinforcing rib 6 is the same as that of the housing 2. In the injection mold, the plastic material is filled to form the housing 2, and the reinforcing rib 6 is also formed in a predetermined shape and position, so that the reinforcing rib 6 and the housing 2 become an inseparable whole, simplifying the production process, reducing the assembly process of parts, improving production efficiency, and reducing production costs. Since the reinforcing rib 6 and the housing 2 are integrally formed, the problems of inaccurate position of the reinforcing rib 6 or loose connection caused by secondary assembly are avoided, and the consistency and reliability of the connection between the reinforcing rib 6 and the housing 2 are guaranteed. The combination between the reinforcing rib 6 and the housing 2 is made tighter, there is no connection gap or weak link, the reinforcing effect of the reinforcing rib 6 can be better exerted, the connection strength between the mounting ear 3 and the housing 2 and the rigidity of the overall structure are further improved, and the performance and quality of the electronic water pump motor are improved.

[0050] In some embodiments, an arc shape is used for transition design at the connection between the mounting ear 3 and the outer peripheral side of the stator core 1. The radius of the arc is reasonably selected according to the size and structural requirements of the mounting ear 3 and the stator core 1 to ensure the smoothness and continuity of the arc transition without sharp edges or sudden changes, effectively avoiding the problem of cracks or damage caused by stress concentration at the connection between the mounting ear 3 and the stator core 1, and the arc transition design makes the electronic water pump motor more beautiful in appearance.

[0051] See also Figure 1 and Figure 4As shown, in some embodiments, a plurality of mounting ears 3 are evenly distributed on the outer circumference of the stator core 1, and the number of mounting ears 3 can be determined according to the specific design requirements and application scenarios of the electronic water pump motor, such as three, four, six, etc., and the plurality of mounting ears 3 can be located on the same circumference or different circumferences. Preferably, along the circumferential direction of the stator core 1, the angles between adjacent mounting ears 3 are equal to ensure that the electronic water pump motor can be evenly stressed during the installation process. A plurality of evenly distributed mounting ears 3 enable the electronic water pump motor to evenly distribute the connection force to each mounting ear 3 when connected to the external structure, avoiding the problem of loose connection or damage caused by excessive force on a single point, and improving the stability and reliability of the connection. And the flexibility of the connection method is increased, which can adapt to different installation requirements and working conditions. In different application scenarios, the mounting ears 3 of the appropriate number and position can be selected for connection according to the actual situation, which is convenient for the electronic water pump motor to be installed with various types of external components, and improves the versatility and adaptability of the electronic water pump motor.

[0052] In some embodiments, the mounting ear 3 is located near the motor output shaft in the motor axis direction, and maintains a certain distance relationship with the motor output shaft, and the distance is reasonably determined according to the overall structural design and mechanical performance requirements of the electronic water pump motor. At this position, the mounting ear 3 forms an organic integral structure with the stator core 1 and the housing 2, which optimizes the layout of the electronic water pump motor in the entire electronic water pump system and makes the force transmission path more reasonable. When the electronic water pump is working, the torque and force generated by the motor output shaft can be more effectively transmitted to the external connection parts through the mounting ear 3 close to the output shaft, reducing the additional bending moment or torque caused by the excessively long or unreasonable force transmission path, and improving the overall operation stability of the electronic water pump.

[0053] See also Figure 5 As shown, in some embodiments, an electronic water pump is also disclosed, and the electronic water pump includes a pump cover 7 and the electronic water pump motor as described above. As an important component of the electronic water pump, the pump cover 7 and the electronic water pump motor together form a complete electronic water pump structure.

[0054] The pump cover 7 is located at one end of the housing 2 and fits tightly with the housing 2. At the connection part, the pump cover 7 and the housing 2 are firmly combined together through a hot melt connection process. During the hot melt connection process, the material of the connection part of the pump cover 7 and the housing 2 is melted by high temperature, and then fused and cooled and solidified under a certain pressure to form a continuous and sealed connection structure, which effectively prevents liquid leakage and ensures good sealing of the electronic water pump. During the operation of the electronic water pump, it can prevent coolant and other liquids from leaking from the connection between the pump cover 7 and the housing 2, ensure the normal operation of the electronic water pump, and improve the working reliability of the electronic water pump.

[0055] The electronic water pump in the present application combines the above-mentioned electronic water pump motor with multiple excellent characteristics, simplifies the overall structure of the electronic water pump, and ensures the connection strength between the electronic water pump and the external structure; at the same time, reduces production costs and improves production efficiency.

[0056] The pump cover 7 in the electronic water pump is connected to the housing 2 by a hot melt connection process, which is relatively simple and easy to realize automated production, thereby improving production efficiency and reducing production costs. At the same time, the hot melt connection can make the connection between the pump cover 7 and the housing 2 tighter and more beautiful, thereby enhancing the overall performance and appearance quality of the electronic water pump.

[0057] The above is a detailed description of an embodiment of the present application, but the content is only a preferred embodiment of the present application and cannot be considered to limit the scope of implementation of the present application. All equivalent changes and improvements made within the scope of the present application should still fall within the scope of the patent coverage of the present application.

[0058] It should be noted that the words "first", "second" and similar terms used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. The descriptions of the application regarding directions such as "left", "right", "left side", "right side", "upper", "lower", "top", and "bottom" are all defined based on the relationship between the orientations or positions shown in the accompanying drawings. They are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the structure must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the application. In the description of the application, "multiple" means more than two, unless otherwise clearly and specifically defined.

[0059] In the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

Claims

1. An electronic water pump motor, characterized in that: The electronic water pump motor comprises: A stator core, wherein a mounting ear is provided on the outer peripheral side of the stator core, and the mounting ear is integrally formed with the stator core; A casing, wherein the casing and the stator core are integrally injection molded; The mounting ear is located in the radial direction of the water pump motor and protrudes from the water pump motor body, and a mounting hole is provided on the mounting ear along the axial direction of the stator core.

2. The electronic water pump motor according to claim 1, characterized in that: The housing wraps the outer surface of the mounting ear.

3. The electronic water pump motor according to claim 1, characterized in that: A structural hole is formed on the mounting ear and penetrates the stator core axially, and the housing fills the structural hole.

4. The electronic water pump motor according to claim 1, characterized in that: A reinforcing rib is arranged between the mounting ear and the housing.

5. The electronic water pump motor according to claim 4, characterized in that: The reinforcing ribs are integrally injection-molded with the housing.

6. The electronic water pump motor according to claim 1, characterized in that: There is an arc transition between the mounting ear and the outer peripheral side of the stator core.

7. The electronic water pump motor according to claim 1, characterized in that: A plurality of mounting ears are provided, and the plurality of mounting ears are evenly distributed along the outer circumference of the stator core.

8. The electronic water pump motor according to any one of claims 1 to 7, characterized in that: The mounting ear is arranged at one end of the motor axial direction close to the motor output shaft.

9. An electronic water pump, characterized in that: The electronic water pump comprises a pump cover and an electronic water pump motor as claimed in any one of claims 1 to 8.

10. The electronic water pump according to claim 9, characterized in that: The pump cover is arranged at one end of the casing and is connected to the casing by thermal melting.

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