Water pump and vehicle

Abstract

The utility model discloses a water pump and a vehicle. The water pump comprises a pump body and a stator assembly, and the pump body is provided with a containing space; the stator assembly is arranged in the accommodating space, the stator assembly is provided with a first end and a second end which are opposite in the axial direction, and the first end extends into the accommodating space; wherein at least one first elastic limiting part is formed on the peripheral wall of the stator assembly, a first limiting groove matched with the first elastic limiting part is formed in the inner wall of the pump body, and the first elastic limiting part is suitable for deforming under the action of radial force so as to elastically push against the first limiting groove. Therefore, on one hand, gluing fixation between the stator assembly and the pump body is not needed, the process can be simplified, the machining difficulty can be reduced, the cost can be reduced, on the other hand, the fixing stability and reliability between the stator assembly and the pump body can be improved, the probability that the stator assembly moves can be reduced, the working noise of the water pump can be reduced, and the use experience can be improved. And the service life of the water pump is prolonged.

Description

Technical Field

[0001] This application relates to the field of water pump technology, and in particular to a water pump and a vehicle. Background Technology

[0002] In related technologies, after the stator assembly of a water pump is assembled with the pump body, axial and radial movement and shaking may occur, which may generate working noise or even damage the water pump. The existing glue-applied fixing method is complicated and costly. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a water pump in which the stator assembly has higher stability within the pump body and does not require adhesive fixation, thereby reducing costs and improving product stability.

[0004] This application further proposes a vehicle employing the aforementioned water pump.

[0005] In a first aspect, this application proposes a water pump, comprising: a pump body and a stator assembly, the pump body having a receiving space; the stator assembly being disposed in the receiving space, the stator assembly having a first end and a second end opposite to each other in the axial direction, the first end extending into the receiving space; wherein at least one first elastic limiting portion is formed on the outer peripheral wall of the stator assembly, and the inner wall of the pump body is provided with a first limiting groove that cooperates with the first elastic limiting portion, the first elastic limiting portion being adapted to deform under the action of radial force to elastically push against the first limiting groove.

[0006] According to the embodiments of this application, the water pump, by setting a first elastic limiting part and a first limiting groove, on the one hand, eliminates the need for glue to fix the stator assembly and the pump body, which simplifies the process, reduces processing difficulty, and lowers costs. On the other hand, it can improve the fixing stability and reliability between the stator assembly and the pump body, reduce the probability of stator assembly shifting, reduce the working noise of the water pump, improve the user experience, and extend the service life of the water pump.

[0007] According to some embodiments of this application, the first elastic limiting part includes: a first arc-shaped arm and a second arc-shaped arm symmetrically arranged, wherein one end of the first arc-shaped arm and the second arc-shaped arm are connected to the outer peripheral wall of the stator assembly, and the other ends are opposite to each other and spaced apart.

[0008] According to some embodiments of this application, the thickness of both the first arc-shaped arm and the second arc-shaped arm is 0.5mm to 0.8mm, and the interval between the other ends of the first arc-shaped arm and the second arc-shaped arm is 0.8mm to 1.2mm.

[0009] According to some embodiments of this application, the first arcuate arm and the second arcuate arm have guide portions formed on the side facing the first end.

[0010] According to some embodiments of this application, the inner wall of the pump body is further provided with a second limiting groove and a first limiting boss, and the outer peripheral wall of the stator assembly is formed with a first limiting protrusion. The first limiting protrusion extends into the first limiting groove to achieve anti-rotation limiting, and the stator core end face of the stator assembly pushes against the first limiting boss.

[0011] According to some embodiments of this application, the water pump further includes: a water jacket and a volute, the water jacket being at least partially located at the second end, the stator assembly including an insulating frame and a stator core sleeved on the insulating frame, the insulating frame having at least one second elastic limiting portion at one end facing the water jacket, the water jacket having a limiting rib formed on one side surface facing the insulating frame, the volute being connected to the pump body, the volute pressing against the water jacket so that the limiting rib presses against the second elastic limiting portion.

[0012] According to some embodiments of this application, the second elastic limiting part is constructed as a closed arch structure, and the wall thickness of the second elastic limiting part is 0.5mm to 0.8mm.

[0013] According to some embodiments of this application, the water jacket includes a cover and a column connected to one side of the cover and extending into the stator assembly. The column includes a first column segment and a second column segment. The outer diameter of the first column segment is larger than the outer diameter of the second column segment to define a first limiting surface. The inner wall of the stator assembly has a second limiting surface that pushes against and cooperates with the first limiting surface.

[0014] According to some embodiments of this application, the outer periphery of the water jacket is provided with a positioning groove, and the end face of the pump body is provided with a positioning protrusion that cooperates with the positioning groove.

[0015] Secondly, this application provides a vehicle, including: the water pump described in the above embodiments.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of a water pump according to an embodiment of this application;

[0019] Figure 2 This is an exploded schematic diagram of a water pump according to an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the pump body according to an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the stator assembly and controller assembly according to an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of a stator assembly according to an embodiment of this application;

[0023] Figure 6 This is a top view of the stator assembly according to an embodiment of this application;

[0024] Figure 7 This is a schematic diagram of a water jacket according to an embodiment of this application.

[0025] Figure label:

[0026] Water pump 100,

[0027] Pump body 10, first limiting groove 11, second limiting groove 12, first limiting boss 13, positioning protrusion 14.

[0028] Stator assembly 20, first end 21, second end 22, first elastic limiting part 23, first arc-shaped arm 231, second arc-shaped arm 232, first limiting protrusion 24, insulating frame 25, stator core 26, second elastic limiting part 27, second limiting surface 28, guide part 29.

[0029] Controller assembly 30,

[0030] Water jacket 40, limiting rib 41, cover 42, column 43, first column segment 431, second column segment 432, first limiting surface 433, positioning groove 44.

[0031] 50 for the volute and 60 for the impeller assembly. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0034] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0037] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0040] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0041] In this application, "multiple" means two or more (including two).

[0042] First, it should be noted that with the rapid development of industry, the application fields of water pumps are becoming increasingly wide. The water pump proposed in this application can be used as a water pump in the vehicle thermal management system. Water pumps are mostly divided into integral assembly and split assembly forms. Integral assembly generally adopts the form of integral plastic coating of the shell and stator. This form has a complex structure and high process requirements. The inner wall of the plastic-coated wet cavity is prone to leakage risk. In the split assembly structure of water pump, the stator assembly is often fixed by glue. This form is costly and complex. At the same time, during long-term operation, it will cause the fixing glue to crack, which seriously affects the stability of the product. The stator assembly is prone to circumferential and radial shaking, generating large working noise, affecting the user experience, and even causing water pump damage.

[0043] Based on this, this application proposes a water pump in which the stator assembly can be fitted with the first limiting groove of the pump body through the first elastic limiting part to achieve interference fit of the stator assembly within the body. On the one hand, it eliminates the need for glue-fixing stator assembly, thereby improving assembly efficiency, simplifying the process, and reducing costs. On the other hand, it can also improve the fixing stability and reliability of the stator assembly, reduce the axial movement of the stator assembly relative to the body, thereby improving operating noise, enhancing the user experience, and extending the service life of the water pump.

[0044] It should be noted that the water pump in this application embodiment has structural improvements in the water jacket, stator assembly, and pump body, which can achieve stable and reliable fixation of the pump body, stator assembly, water jacket, and volute without the need for glue fixation, thereby improving the working stability and reliability of the water pump, which will be described in detail below.

[0045] The following is for reference. Figures 1-7 This invention describes a water pump 100 and a vehicle according to an embodiment of the present invention.

[0046] like Figure 1 and Figure 2 As shown, this application proposes a water pump 100, including: a pump body 10, a volute 50, and a water jacket 40, an impeller assembly 60, a stator assembly 20, and a controller assembly 30 disposed within the pump body and the volute 50.

[0047] The impeller assembly 60, water jacket 40, stator assembly 20, and controller assembly 30 are all housed within the accommodating space of the pump body 10. The controller assembly 30 can be connected to the insulating frame 25 of the stator assembly 20, and the controller assembly 30 has plug-in terminals that are plugged into the wiring harness plug-in terminals on the pump body 10 assembly. The impeller assembly 60 may include a rotor component and an impeller. The rotor component is connected to the impeller and is housed inside the stator assembly 20. It can rotate relative to the stator assembly 20, thereby driving the impeller to rotate. A seal may be provided between the water jacket 40 and the volute 50.

[0048] Specifically, the stator assembly 20 is disposed in the accommodating space. The stator assembly 20 has a first end 21 and a second end 22 that are axially opposite each other. The first end 21 extends into the accommodating space, and at least one first elastic limiting part 23 is formed on the outer peripheral wall of the stator assembly 20. The inner wall of the pump body 10 is provided with a first limiting groove 11 that cooperates with the first elastic limiting part 23. The first elastic limiting part 23 is adapted to deform under the action of radial force so as to elastically push against the first limiting groove 11.

[0049] In other words, during the process of the first end 21 extending into the accommodating space, the first elastic limiting part 23 extends into the first limiting groove 11. The first elastic limiting part 23 can be interference-fitted with the first limiting groove 11, and during the axial pressing process, the first elastic limiting part 23 can undergo elastic deformation to achieve elastic radial limiting.

[0050] It is understandable that by setting the first elastic limiting part 23 and the first limiting groove 11 that cooperates with the first elastic limiting part 23, during the process of axially pressing the stator assembly 20 into the pump body 10, the first elastic limiting part 23 can generate elastic deformation in the first limiting groove 11 and achieve an interference fit with the first limiting groove 11, generating a radial elastic limiting force to achieve elastic radial limiting of the stator assembly 20. Thus, when the stator assembly 20 has a tendency to radially wobble, the radial elastic limiting force can suppress the radial wobble of the stator assembly 20. When the stator assembly 20 has a tendency to axially move, the interference fit between the first elastic limiting part 23 and the first limiting groove 11 can also suppress the axial movement of the stator assembly 20.

[0051] It should be noted that in this embodiment, the stator assembly 20 is axially press-fitted to the pump body 10, and the stator assembly 20 is fixed in the pump body 10 without the need for glue fixation, which can simplify the process and reduce costs.

[0052] According to the embodiments of this application, the water pump 100, by providing a first elastic limiting part 23 and a first limiting groove 11, on the one hand, eliminates the need for glue to fix the stator assembly 20 and the pump body 10, which simplifies the process, reduces processing difficulty, and lowers costs. On the other hand, it can improve the fixing stability and reliability between the stator assembly 20 and the pump body 10, reduce the probability of the stator assembly 20 shifting, reduce the working noise of the water pump 100, improve the user experience, and extend the service life of the water pump 100.

[0053] Combination Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, according to some embodiments of this application, the first elastic limiting part 23 includes: a first arc-shaped arm 231 and a second arc-shaped arm 232 symmetrically arranged, one end of the first arc-shaped arm 231 and the second arc-shaped arm 232 are connected to the outer peripheral wall of the stator assembly 20, and the other ends are opposite and spaced apart.

[0054] Specifically, the free ends of the first arc-shaped arm 231 and the second arc-shaped arm 232 are opposite to each other and spaced apart, so that the first arc-shaped arm 231 and the second arc-shaped arm 232 can generate elastic deformation during the press-fitting process of the stator assembly 20. Through the elastic deformation in the first limiting groove 11, the first elastic limiting part 23 and the first limiting groove 11 are elastically limited and matched, thereby improving the fixing reliability and stability of the stator assembly 20.

[0055] It is understandable that the first arc-shaped arm 231 and the second arc-shaped arm 232 are symmetrically arranged, and there can be multiple first elastic limiting parts 23, which are evenly distributed on the outer periphery of the stator assembly 20. This can make the force distribution among the multiple first elastic limiting parts 23 more uniform and the force between the first arc-shaped arm 231 and the second arc-shaped arm 232 more uniform.

[0056] Furthermore, such as Figure 3 , Figure 4 and Figure 5 As shown, according to some embodiments of this application, the inner wall of the pump body 10 is further provided with a second limiting groove 12 and a first limiting boss 13, and the outer peripheral wall of the stator assembly 20 is formed with a first limiting protrusion 24. The first limiting protrusion 24 extends into the first limiting groove 11 to achieve anti-rotation limiting, and the end face of the stator core 26 of the stator assembly 20 pushes against the first limiting boss 13.

[0057] Specifically, a guide groove is provided on the inner wall of the pump body 10, and a side wall boss is provided on the side wall of the stator assembly 20. The side wall boss and the guide groove are inserted into each other. The first limiting protrusion 24 can extend into the second limiting groove 12. The second limiting groove 12 can be limited by the limiting rib, so as to achieve double radial limiting. That is, the first elastic limiting part 23 cooperates with the first limiting groove 11, and the first limiting protrusion 24 cooperates with the second limiting groove 12 to achieve double limiting.

[0058] Furthermore, the stator assembly 20 can be lowered as a whole to the position of the first limiting boss 13, and the end face of the insulating frame 25 of the stator assembly 20 adjacent to the first end 21 can be pushed and engaged with the first limiting boss 13 to limit one axial end (i.e., the first end 21) of the stator assembly 20. The other axial end (i.e., the second end 22) of the stator assembly 20 can be engaged with the volute 50 to limit the other axial end, which can further improve the stability and reliability of the stator assembly 20 in the pump body 10.

[0059] Combination Figure 5 and Figure 6 As shown, according to some embodiments of this application, the thickness of the first arc arm 231 and the second arc arm 232 is 0.5mm to 0.8mm, and the interval between the other ends of the first arc arm 231 and the second arc arm 232 is 0.8mm to 1.2mm.

[0060] For example, the first arc-shaped arm 231 and the second arc-shaped arm 232 both extend along the axial direction of the water pump 100, and the thickness of the first arc-shaped arm 231 and the second arc-shaped arm 232 can be 0.5mm, 0.6mm, 0.7mm, or 0.8mm, and the distance between the free ends of the first arc-shaped arm 231 and the second arc-shaped arm 232 can be 0.8mm, 0.9mm, 1mm, 1.1mm, or 1.2mm, etc.

[0061] This makes the arm thickness of the first arc-shaped arm 231 and the second arc-shaped arm 232 more reasonable, avoiding the first arc-shaped arm 231 and the second arc-shaped arm 232 being too thin, which can improve the limiting effect after elastic deformation. It can also avoid the first arc-shaped arm 231 and the second arc-shaped arm 232 being too thick, which can reduce the difficulty of assembling the stator assembly 20 to the pump body 10. The interval between the first arc-shaped arm 231 and the second arc-shaped arm 232 is more reasonable, which can avoid the distance between the two being too large, thus reducing the assembly difficulty. It can also avoid the distance between the two being too small, thus ensuring the limiting effect after deformation.

[0062] It is understandable that by ensuring that the arm thickness of the first arc-shaped arm 231 and the second arc-shaped arm 232, and the distance between the free ends of the first arc-shaped arm 231 and the second arc-shaped arm 232 meet the above-mentioned dimensional range, when the stator assembly 20 is axially installed on the pump body 10, or when the stator assembly 20 tends to rotate relative to the pump body 10 after assembly, the first arc-shaped arm 231 and the second arc-shaped arm 232 are subjected to radial external force and produce a certain elastic deformation. The end face gap of the first arc-shaped arm 231 and the second arc-shaped arm 232 will gradually decrease and shrink to achieve elastic interference limiting with the first limiting groove 11.

[0063] In other words, the insulating skeleton 25 of the stator assembly 20 can be made of nylon-like soft plastic material, which wraps around the stator core 26 and is integrally injection molded. The part of the insulating skeleton 25 located on both sides of the axis of the stator core 26 is further connected to the outer peripheral wall of the stator core 26. A first arc arm 231 and a second arc arm 232 are symmetrically arranged on the connection surface (i.e., the outer peripheral wall of the stator assembly 20). When subjected to radial force, the first arc arm 231 and the second arc arm 232 are deformed by force to achieve radial limiting after elastic deformation.

[0064] Furthermore, a first limiting protrusion 24 can be formed on the outer arm of the stator core 26. The first limiting protrusion 24 can cooperate with the second limiting groove 12 on the pump body 10 to achieve a double radial limiting effect. The lower end face of the stator core 26 facing the first end 21 and the lower end face of the first limiting protrusion 24 can form a limiting surface. This limiting surface can push against the first limiting boss 13 to achieve axial limiting in the assembly direction (i.e., one axial end of the water pump 100), which can further improve the assembly accuracy and reliability of the water pump 100.

[0065] like Figure 5 As shown, according to some embodiments of this application, the first arcuate arm 231 and the second arcuate arm 232 have guide portions 29 formed on the side facing the first end 21.

[0066] In the direction toward the second end 22, the cross-sectional area of ​​the guide portion 29 gradually increases to define the guide portion 29 as a guide slope or guide arc surface. The guide portion 29 is used for assembly guidance during the axial press-fit process, which can reduce the assembly difficulty of the stator assembly 20. As the press-fit process progresses, the first arc arm 231 and the second arc arm 232 can gradually shrink and press together to gradually achieve radial limiting and fixing.

[0067] like Figure 2 and Figure 7 As shown, according to some embodiments of this application, the water pump 100 further includes: a water jacket 40 and a volute 50. The water jacket 40 is at least partially located at the second end 22. The stator assembly 20 includes an insulating frame 25 and a stator core 26 sleeved on the insulating frame 25. At least one second elastic limiting part 27 is provided at one end of the insulating frame 25 facing the water jacket 40. A limiting rib 41 is formed on one side surface of the water jacket 40 facing the insulating frame 25. The volute 50 is connected to the pump body 10. The volute 50 presses against the water jacket 40 so that the limiting rib 41 presses against the second elastic limiting part 27.

[0068] Specifically, the volute 50 is connected to the pump body 10, and at least a portion of the water jacket 40 is located at the second end 22. The water jacket 40 is sleeved on the outside of the stator assembly 20 and is located between the stator assembly 20 and the pump body 10, and between the stator assembly 20 and the volute 50, so that the water jacket 40 can play a blocking role.

[0069] Furthermore, a second elastic limiting part 27 is provided on the insulating frame 25, and a limiting rib 41 that presses against the second elastic limiting part 27 is provided on the surface of the water jacket 40 facing the insulating frame 25. After the volute 50 is connected to the pump body 10, the volute 50 presses against the water jacket 40. When the stator assembly 20 tends to move axially, the limiting rib 41 can further press against the second elastic limiting part 27. Through the elastic deformation of the second elastic limiting part 27, an axial elastic limiting force is applied to the stator assembly 20, which can reduce the axial transmission of the stator assembly 20, thereby further improving the working stability of the water pump 100, reducing working noise, and extending service life.

[0070] It should be noted that the second elastic limiting part 27 can be configured as an elastic structure located between the end face of the water jacket 40 and the insulating frame 25 defining the second end 22. This elastic structure can be a spring, linear spring, etc., so as to elastically push against the stator assembly 20 and realize the axial limiting of the stator assembly 20.

[0071] exist Figure 4 and Figure 5 In the embodiments shown, according to some embodiments of this application, the second elastic limiting part 27 is constructed as a closed arch structure, and the wall thickness of the second elastic limiting part 27 is 0.5mm to 0.8mm.

[0072] The closed arch structure refers to the second elastic limiting part 27 being connected to the insulating frame 25, and at least a portion of the second elastic limiting part 27 being spaced apart from the insulating frame 25 to define an arched elastic cavity. The elastic cavity enables the second elastic limiting part 27 to have a certain elasticity, and allows the second elastic limiting part 27 to be made of elastic plastic material and to be integrally formed with the insulating frame 25. Under the premise of achieving elastic limiting, there is no need to set up elastic structures such as springs and linear springs separately, which can also reduce assembly difficulty and improve assembly efficiency.

[0073] It is understandable that the wall thickness of the second elastic limiting part 27 is 0.5mm, 0.6mm, 0.7mm, 0.8mm, etc., so that the thickness of the second elastic limiting part 27 is more reasonable, avoiding the size being too small, which would result in poor elastic limiting effect, and also avoiding the size being too large, which would make it difficult to generate elastic deformation, thus taking into account the assembly difficulty.

[0074] It should be noted that the second elastic limiting part 27 is formed at the end of the insulating frame 25, and there are at least three of them, which are arranged at equal angular intervals.

[0075] like Figure 7 As shown, according to some embodiments of this application, the water jacket 40 includes a cover 42 and a column 43 connected to one side of the cover 42 and extending into the stator assembly 20. The column 43 includes a first column segment 431 and a second column segment 432. The outer diameter of the first column segment 431 is larger than the outer diameter of the second column segment 432 to define a first limiting surface 433. The inner sidewall of the stator assembly 20 has a second limiting surface 28 that pushes against and cooperates with the first limiting surface 433.

[0076] Specifically, the water jacket 40 is made of plastic and includes a cover 42 and a column 43 located on one side of the cover 42. The column 43 can penetrate into the inner wall of the stator assembly 20. The column 43 is divided into a first column segment 431 and a second column segment 432 connected in sequence. A first limiting surface 433 (i.e., a stepped surface between the first column segment 431 and the second column segment 432) is formed between the first column segment 431 and the second column segment 432. A second limiting surface 28 is formed on the inner wall of the stator assembly 20 (which can be defined by the insulating frame 25) that abuts against the first limiting surface 433. Through the cooperation of the first limiting surface 433 and the second limiting surface 28, the axial limiting of the stator assembly 20 is achieved, which can further improve the limiting stability and reliability of the stator assembly 20.

[0077] It is understood that there can be multiple limiting ribs 41, and the limiting ribs 41 are formed on the side surface of the cover 42 facing the stator assembly 20. Reinforcing ribs can also be formed on the column 43. The reinforcing ribs can push against the inner wall of the stator assembly 20, and the reinforcing ribs can be connected to the limiting ribs 41 or spaced apart from the limiting ribs 41. At the same time, by setting the limiting ribs 41 and the reinforcing ribs on the water jacket 40, the structural strength of the water jacket 40 can be improved.

[0078] Combination Figure 3 and Figure 7 As shown, according to some embodiments of this application, the outer periphery of the water jacket 40 is provided with a positioning groove 44, and the end face of the pump body 10 is provided with a positioning protrusion 14 that cooperates with the positioning groove 44.

[0079] In other words, the pump body 10 includes a cylinder and an end cap located at one end of the cylinder. The other end of the cylinder is open and used to assemble the volute 50 and the water jacket 40. A positioning protrusion 14 is formed on the end face of the other end of the cylinder, and a positioning groove 44 is formed on the water jacket 40. The positioning protrusion 14 extends into the positioning groove 44 to achieve anti-rotation limiting of the water jacket 40, so as to further improve the fixing stability and reliability of the water jacket 40 and the stator assembly 20.

[0080] In summary, according to the embodiments of this application, the stator assembly 20 is axially press-fitted to the pump body 10, and the first elastic limiting part 23 is elastically limited to the first limiting groove 11, and the second limiting groove 12 is limited to the first limiting protrusion 24 to achieve double radial limiting. On the first end 21, the first limiting boss 13 is axially limited to the end face of the first limiting protrusion 24, and on the second end 22, the second elastic limiting part 27 is elastically limited to the limiting rib 41. The positioning surface 28 and the first limiting surface 433 push and cooperate to achieve axial limiting of the first end 21 and the second end 22 of the stator assembly 20. The positioning groove 44 and the positioning protrusion 14 achieve anti-rotation limiting of the water jacket 40. The volute 50 and the pump body 10 can be fixed by welding, and the end face of the volute 50 contacts the end face of the water jacket 40 to achieve the overall assembly of the water pump 100, improve the reliability of the water pump 100, reduce the working noise of the water pump 100, and extend the service life of the water pump 100.

[0081] In other words, the symmetrical arc-shaped structure of the first elastic limiting part 23 achieves radial limiting after elastic deformation, and in conjunction with the second limiting groove 12 (which can be defined by limiting ribs) provided in the pump body 10, further radial limiting is achieved, which can improve the radial stability of the stator assembly 20, reduce radial sway, and reduce working noise. The setting of the second elastic limiting part 27 can achieve axial upper limiting, and the stator assembly 20 and the pump body 10 can achieve axial lower limiting through the first limiting boss 13 to reduce the axial movement of the stator assembly 20. The water pump 100 is assembled by press fitting and welding, which is simple in assembly process, has no glue application process, simplifies the process, improves assembly efficiency, and reduces costs.

[0082] Secondly, this application provides a vehicle including: the water pump 100 in the above embodiment, which has the same technical effects as the water pump 100 described above, and will not be repeated here.

[0083] The water pump 100 and other components and operations of the vehicle according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0084] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0085] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water pump (100), characterized in that, include: Pump body (10), the pump body (10) having a receiving space; A stator assembly (20) is disposed in the accommodating space, the stator assembly (20) having a first end (21) and a second end (22) opposite each other in the axial direction, the first end (21) extending into the accommodating space; wherein At least one first elastic limiting part (23) is formed on the outer peripheral wall of the stator assembly (20), and the inner wall of the pump body (10) is provided with a first limiting groove (11) that cooperates with the first elastic limiting part (23). The first elastic limiting part (23) is adapted to deform under the action of radial force to elastically push against the first limiting groove (11).

2. The water pump (100) according to claim 1, characterized in that, The first elastic limiting part (23) includes a first arc-shaped arm (231) and a second arc-shaped arm (232) arranged symmetrically. One end of the first arc-shaped arm (231) and the second arc-shaped arm (232) are connected to the outer peripheral wall of the stator assembly (20), and the other ends are opposite and spaced apart.

3. The water pump (100) according to claim 2, characterized in that, The thickness of the first arc-shaped arm (231) and the second arc-shaped arm (232) is 0.5mm to 0.8mm, and the interval between the other ends of the first arc-shaped arm (231) and the second arc-shaped arm (232) is 0.8mm to 1.2mm.

4. The water pump (100) according to claim 2, characterized in that, The first arc-shaped arm (231) and the second arc-shaped arm (232) have guide portions (29) formed on the side facing the first end (21).

5. The water pump (100) according to any one of claims 1-4, characterized in that, The pump body (10) is also provided with a second limiting groove (12) and a first limiting boss (13) on its inner wall. The stator assembly (20) is provided with a first limiting protrusion (24) on its outer peripheral wall. The first limiting protrusion (24) extends into the first limiting groove (11) to achieve anti-rotation limiting. The end face of the stator core (26) of the stator assembly (20) pushes against the first limiting boss (13).

6. The water pump (100) according to claim 1, characterized in that, The water pump (100) further includes a water jacket (40) and a volute (50). The water jacket (40) is at least partially located at the second end (22). The stator assembly (20) includes an insulating frame (25) and a stator core (26) sleeved on the insulating frame (25). The insulating frame (25) is provided with at least one second elastic limiting part (27) at one end facing the water jacket (40). A limiting rib (41) is formed on one side surface of the water jacket (40) facing the insulating frame (25). The volute (50) is connected to the pump body (10). The volute (50) presses against the water jacket (40) so that the limiting rib (41) presses against the second elastic limiting part (27).

7. The water pump (100) according to claim 6, characterized in that, The second elastic limiting part (27) is constructed as a closed arch structure, and the wall thickness of the second elastic limiting part (27) is 0.5mm to 0.8mm.

8. The water pump (100) according to claim 6, characterized in that, The water jacket (40) includes a cover (42) and a column (43) connected to one side of the cover (42) and extending into the stator assembly (20). The column (43) includes a first column segment (431) and a second column segment (432). The outer diameter of the first column segment (431) is larger than the outer diameter of the second column segment (432) to define a first limiting surface (433). The inner sidewall of the stator assembly (20) has a second limiting surface (28) that pushes against the first limiting surface (433).

9. The water pump (100) according to any one of claims 6-8, characterized in that, The water jacket (40) is provided with a positioning groove (44) on its outer periphery, and the pump body (10) is provided with a positioning protrusion (14) that cooperates with the positioning groove (44) on its end face.

10. A vehicle, characterized in that, include: The water pump (100) according to any one of claims 1-9.

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