Water pump

Abstract

A pump body assembly is provided with a containing space, a stator assembly is arranged in the containing space, the stator assembly is provided with a first end and a second end which are opposite in the axial direction, the first end extends into the containing space, a water jacket is connected with the pump body assembly, at least part of the water jacket is located at the second end, and a volute cover is arranged at the open end of the containing space. A welding wire rib is formed on the inner wall of the volute, the volute is welded to the pump body assembly, and the welding wire rib is suitable for being heated to deform and connected with the water jacket so as to push and limit the water jacket in the axial direction of the water pump. According to the water pump, the volute and the pump body assembly can be welded and fixed, a bolt fixing structure does not need to be arranged, cost can be reduced, a dry cavity sealing ring does not need to be arranged, the welding wire rib abuts against the water jacket in a pressing mode, a sealing piece is matched for use, stable and reliable sealing is achieved, the cost is reduced, the technology is simplified, the machining efficiency is improved, and meanwhile the machining cost is reduced. The reliability of the water pump can be further improved.

Description

Technical Field

[0001] The present application relates to the technical field of water pumps, and in particular to a water pump. Background Art

[0002] In the related art, most water pumps are integrally assembled or split-assembled. The integral assembly adopts the form of overall plastic encapsulation of the shell and the stator, which has a complex structure and high process requirements. There is a risk of leakage inside the plastic-encapsulated wet cavity. In the split-assembly structure, the stator assembly needs to be fixed by gluing, which has high fixing costs and complex processes. In addition, during use, the technical problem of cracking of the fixing glue is prone to occur, resulting in poor stability of the water pump. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a water pump, which has high working stability and low cost.

[0004] The embodiment of the present application proposes a water pump, comprising: a pump body assembly, a stator assembly, a water jacket and a volute, the pump body assembly having a accommodating space, the stator assembly being arranged in the accommodating 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 accommodating space, the water jacket being connected to the pump body assembly and at least partially located at the second end, the volute cover being arranged at an open end of the accommodating space, welding ribs being formed on the inner wall of the volute, the volute being welded to the pump body assembly, and the welding ribs being suitable for deformation due to heat, and being connected to the water jacket to push and limit the water jacket along the axial direction of the water pump.

[0005] According to the water pump of the embodiment of the present application, the volute and the pump body assembly can be welded and fixed, and there is no need to set a bolt fixing structure, which can reduce costs. There is no need to set a dry cavity sealing ring. By pressing the welding wire ribs against the water jacket and cooperating with the use of sealing members, stable and reliable sealing can be achieved, thereby reducing costs, simplifying the process, and improving processing efficiency, and at the same time, the reliability of the water pump can be further improved.

[0006] According to some embodiments of the present application, a guide side wall is provided on the side of the water jacket facing the pump body assembly, a first plug-in portion is provided on the guide side wall, a second plug-in portion plug-matched with the first plug-in portion is provided on the second end, and interference ribs are provided on the first plug-in portion and / or the second plug-in portion.

[0007] According to some embodiments of the present application, a fixing boss is further provided on the guide side wall, and a fixing groove cooperating with the fixing boss is provided at an opening end of the accommodating space of the pump body assembly.

[0008] According to some embodiments of the present application, a first limiting boss, a first limiting portion and a first guide portion are provided on the inner wall of the pump body assembly, and the first end is provided with a second limiting portion cooperating with the first limiting portion and a second guide portion cooperating with the first guide portion, and the first limiting boss is suitable for pushing against the end face of the first end.

[0009] According to some embodiments of the present application, the first limiting portion is formed as a limiting buckle, the second limiting portion is constructed as a limiting plate, one end of the limiting plate is connected to the first end, and a limiting hole that cooperates with the limiting buckle is formed on the limiting plate.

[0010] According to some embodiments of the present application, a guiding slope is formed at the free end of the limiting plate.

[0011] According to some embodiments of the present application, the first guide portion is configured as a guide groove, the second guide portion is configured as a guide column, and the guide column is connected to the first end.

[0012] According to some embodiments of the present application, the water pump also includes: a controller assembly, which is fixed to the pump body assembly via a controller mounting column formed at the first end, and the second guide portion is suitable for pushing against the controller assembly to axially limit the controller assembly, and the controller assembly is electrically connected to multiple input terminals of the pump body assembly.

[0013] According to some embodiments of the present application, a second limiting boss is provided on the bottom wall of the accommodating space, the second limiting boss extends in the circumferential direction and is suitable for pushing and limiting the controller assembly, and the second limiting boss is connected to the first limiting boss or connected to the first guide portion.

[0014] According to some embodiments of the present application, the pump body assembly also has a wiring harness plug-in portion, which is arranged on the bottom wall of the accommodating space, and an output terminal is provided on the wiring harness plug-in portion, and the output terminal is electrically connected to the controller assembly, and a third limiting portion is provided on the wiring harness plug-in portion, and the controller assembly has a fourth limiting portion that is plugged into and cooperates with the third limiting portion.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a schematic diagram of a water pump according to an embodiment of the present application;

[0018] Figure 2 is a schematic diagram of an explosion of a water pump according to an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of a water pump according to an embodiment of the present application;

[0020] Figure 4 yes Figure 3 The middle circle shows a partial enlarged schematic diagram of area A;

[0021] Figure 5 is a schematic diagram of a pump assembly according to an embodiment of the present application;

[0022] Figure 6 is a schematic diagram of a stator assembly according to an embodiment of the present application;

[0023] Figure 7 is a schematic diagram of a controller assembly according to an embodiment of the present application;

[0024] Figure 8 is a schematic diagram of a water jacket according to an embodiment of the present application;

[0025] Fig. 9 It is a schematic diagram of a volute according to an embodiment of the present application.

[0026] Reference numerals:

[0027] Water pump 100,

[0028] Pump body assembly 10, first limiting boss 11, first limiting portion 12, first guide portion 13, second limiting boss 14, wiring harness plug-in portion 15, third limiting portion 151, fixing groove 16, output terminal 17,

[0029] stator assembly 20, first end 21, second limit portion 211, second guide portion 212, controller mounting column 213, second end 22, second plug-in portion 221, interference rib 2211, input terminal 23,

[0030] Controller assembly 30, fourth limiting portion 31,

[0031] Water jacket 40, guide side wall 41, first plug-in portion 42, fixing boss 43,

[0032] Volute 50, welding wire rib 51,

[0033] Seal 60, impeller assembly 70,

[0034] Accommodating space a, guiding inclined surface b. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are 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.

[0036] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0037] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0040] In the embodiments of the present application, the same reference numerals represent 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 the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0043] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0044] The term "plurality" used in the present application refers to two or more (including two).

[0045] First of all, it should be pointed out that with the rapid development of industry, the application field of water pump 100 is becoming more and more extensive. The water pump 100 proposed in this application can be used as a water pump 100 in a vehicle thermal management system. Water pump 100 is mostly divided into integral assembly and split assembly forms; the 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 plastic coating of the inner wall of the wet cavity can easily cause leakage risks; and in the split assembly structure of the water pump 100, the water jacket 40 and the volute 50 are generally fixed by bolting. This form increases the use of bolts and dry cavity sealing rings, resulting in increased costs; and the stator assembly 20 is often fixed by gluing. This form is costly and complex in process. At the same time, during long-term operation, it will cause the problem of cracking of the fixing glue, which seriously affects the stability of the product. Therefore, the above problems need to be solved urgently.

[0046] Based on this, the present application proposes a water pump 100 which adopts a split assembly structure. However, the water pump 100 and the volute 50 can be assembled by welding, without the need for gluing, setting a dry cavity sealing ring, or bolting, thereby reducing costs and improving working stability.

[0047] Combination Figure 1 , Figure 2 and Figure 3As shown, the water pump 100 of the embodiment of the present application includes: a volute 50 , an impeller assembly 70 , a water jacket 40 , a seal 60 , a stator assembly 20 , a controller assembly 30 and a pump body assembly 10 .

[0048] Among them, the impeller assembly 70 includes a rotor component and an impeller, the rotor component is connected to the impeller, the rotor component is arranged inside the stator assembly 20, and can rotate relative to the stator assembly 20, thereby driving the impeller to rotate, and the seal 60 is arranged between the water jacket 40 and the volute 50 to improve the sealing performance of the water pump 100, and the volute 50, water jacket 40, stator assembly 20, controller assembly 30 and pump body assembly 10 all have structural improvements, so that the water pump 100 of the embodiment of the present application can be assembled by welding, reducing the use of bolt structure, eliminating the dry cavity sealing ring structure, reducing costs, simplifying the process, and achieving stable and reliable limiting of the stator assembly 20, water jacket 40 and volute 50, without the need for gluing and fixing, which can reduce technical problems such as leakage and movement, and improve the working stability of the water pump 100, which is further described in detail below.

[0049] Reference below Figure 1-Figure 9 A water pump 100 according to an embodiment of the present application is described.

[0050] See also Figure 1 , Figure 2 and Figure 3 As shown, the embodiment of the present application proposes a water pump 100 , including: a pump body assembly 10 , a stator assembly 20 , a water jacket 40 and a volute 50 .

[0051] Among them, the pump body assembly 10 has an accommodating space a, the stator assembly 20 is arranged in the accommodating space a, the stator assembly 20 has a first end 21 and a second end 22 opposite to each other in the axial direction, the first end 21 extends into the accommodating space a, the water jacket 40 is connected to the pump body assembly 10, and is at least partially located at the second end 22, the volute 50 is covered at one end of the opening of the accommodating space a, and a welding rib 51 is formed on the inner wall of the volute 50. The volute 50 is welded to the pump body assembly 10, and the welding rib 51 is suitable for deformation due to heat, and is connected to the water jacket 40 to push the limiting water jacket 40 along the axial direction of the water pump 100.

[0052] Specifically, the water jacket 40 is connected to the pump body assembly 10 and is at least partially 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 assembly 10, and between the stator assembly 20 and the volute 50. The water jacket 40 can play a barrier role.

[0053] Furthermore, combined with Figure 3 , Figure 4 and Fig. 9As shown, the volute 50 can be made of injection molding material. The material of the volute 50 can be consistent with the shell material of the pump body assembly 10. The shell and the volute 50 are welded and fixed, and 3-6 welding ribs 51 can be set on the volute 50. The welding ribs 51 and the end faces of the water jacket 40 are in interference. When the volute 50 and the shell are welded, energy can be simultaneously transmitted to the area where the welding ribs 51 are located. The welding ribs 51 are deformed by heat and are suitable for thermal deformation. The weld ribs 51 after thermal deformation can squeeze the water jacket 40, further fix the water jacket 40, and push and limit the water jacket 40 in the axial direction of the water jacket 40.

[0054] According to the water pump 100 of the embodiment of the present application, the volute 50 and the pump body assembly 10 can be welded and fixed, without setting a bolt fixing structure, which can reduce costs, and there is no need to set a dry cavity sealing ring. By pressing the welding wire ribs 51 against the water jacket 40 and cooperating with the use of the sealing member 60, a stable and reliable seal can be achieved, thereby reducing costs, simplifying the process, and improving processing efficiency, and at the same time, the reliability of the water pump 100 can be further improved.

[0055] Combination Figure 2 and Figure 8 As shown, a guide side wall 41 is provided on the side of the water jacket 40 facing the pump body assembly 10 , a first plug-in portion 42 is provided on the guide side wall 41 , and a second plug-in portion 221 plug-matched with the first plug-in portion 42 is provided on the second end 22 .

[0056] Specifically, 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 assembly 10, and between the stator assembly 20 and the volute 50. The water jacket 40 can play a barrier role, and the water jacket 40 can include a disc and a cylinder, the disc is connected to the cylinder, and a guide side wall 41 is provided on the side of the cylinder facing the second end 22. The guide side wall 41 can be located between the inner wall of the pump body assembly 10 and the outer wall of the stator assembly 20 to achieve radial limitation of the stator assembly 20, and the first plug-in portion 42 is formed on the guide side wall 41, and a plurality of them can be arranged at intervals along the circumferential direction, such as three, and the corresponding second end 22 can be provided. A second plug-in portion 221 is provided, and one of the first plug-in portion 42 and the second plug-in portion 221 is provided with a groove, and the other is formed as a convex column and extends into the groove to realize the connection between the water jacket 40 and the stator assembly 20, thereby improving the connection stability between the water jacket 40 and the stator assembly 20, and reducing the radial transmission and circumferential rotation of the water jacket 40. At the same time, the circumferential side of the first plug-in portion 42 can also have a raised limiting structure, such as a triangular protrusion, a rectangular protrusion, etc., and a triangular groove or a rectangular groove is formed on the side plate of the corresponding pump body assembly 10, so as to realize further circumferential rotation limitation of the stator assembly 20 through the raised limiting structure and the groove structure on the side plate.

[0057] Furthermore, if Figure 4 and Figure 6As shown, interference ribs 2211 are provided on the first plug-in portion 42 and / or the second plug-in portion 221 .

[0058] Exemplarily, the first plug-in portion 41 is formed as a groove, the second plug-in portion 221 is formed as a convex column, and interference ribs 2211 can be formed on the outer periphery of the convex column or the inner wall of the groove, so as to achieve an interference fit between the first plug-in portion 42 and the second plug-in portion 221 through the interference ribs 2211, thereby achieving an interference fit between the water jacket 40 and the stator assembly 20, so as to further improve the axial limiting effect on the stator assembly 20.

[0059] It should be pointed out that, in the illustrated example, interference ribs 2211 are formed on the second plug-in portion 221 , and the interference ribs 2211 are multiple, such as 4, 5 or more, formed in the circumferential direction of the second plug-in portion 221 .

[0060] Furthermore, a fixing boss 43 is provided on the guide side wall 41 , and a fixing groove 16 cooperating with the fixing boss 43 is provided at an open end of the accommodating space a of the pump body assembly 10 .

[0061] Thus, the fixing boss 43 can be inserted into the fixing groove 16 , thereby achieving anti-rotation limiting of the water jacket 40 , and improving the fixing stability and reliability of the water jacket 40 .

[0062] Furthermore, if Figure 1 , Figure 2 and Figure 3 As shown, a first limiting boss 11, a first limiting portion 12 and a first guide portion 13 are provided on the inner wall of the pump body assembly 10, and the stator assembly 20 has a first end 21 and a second end 22 which are opposite to each other in the circumferential direction, the first end 21 preferentially extends into the accommodating space a, and the first end 21 is provided with a second limiting portion 211 cooperating with the first limiting portion 12, and a second guide portion 212 cooperating with the first guide portion 13, and the first limiting boss 11 is suitable for pushing against the end face of the first end 21.

[0063] Specifically, the pump body assembly 10 may include a shell and an electrical connection portion formed on the shell, the electrical connection portion is used to electrically connect to the outside world to achieve overall control of the water pump 100, the shell may include a bottom plate and a side plate connected to the bottom plate and formed with an opening at the other end, the side plate and the bottom plate enclose a accommodating space a, the stator assembly 20 is arranged in the accommodating space a, the stator assembly 20 may include an insulating frame, a stator core, a winding, an output terminal 23, etc., the insulating frame is wound around the stator core, and the axial ends of the stator core can be formed as a first end 21 and a second end 22, respectively.

[0064] Furthermore, a first limiting boss 11 is provided on the inner wall of the side plate (i.e., the inner wall of the pump body assembly 10), and the first limiting boss 11 extends radially inwardly compared with the inner wall of the side plate. During the process of assembling the stator assembly 20 into the accommodating space a, the first limiting boss 11 formed on the inner wall of the side plate can be pushed against the end face of the stator core. After the assembly of the water pump 100 is completed, the stator assembly 20 can be limited at one axial end by the first limiting boss 11, and the first limiting portion 12 is also formed on the side surface of the shell, and the corresponding second limiting portion 211 is formed on the stator core. The first limiting portion 12 cooperates with the second limiting portion 211 to further achieve axial limitation of the stator assembly 20, and the first guide portion 13 and the second guide portion 212 can achieve guiding cooperation, so that the stator assembly 20 can be assembled into the accommodating space a at an expected angle, thereby improving the assembly accuracy.

[0065] It can be understood that the cooperation specified in the embodiments of the present application can be any form of connection cooperation or contact cooperation such as plug-in, snap-in, abutment, etc., and the cooperation between the first limiting boss 11 and the insulating frame, and the cooperation between the first limiting portion 12 and the second limiting portion 211 can improve the fixing stability and reliability of the stator assembly 20 in the pump body assembly 10, and the stator assembly 20 can be stably and reliably fixed without gluing, which can not only reduce the fixing cost, but also prevent the problem of structural glue cracking during later use, and can also improve the working stability and reliability of the water pump 100. The cooperation between the first guide portion 13 and the second guide portion 212 can at least improve the assembly accuracy of the stator assembly 20, reduce the difficulty of assembly, and improve the assembly efficiency.

[0066] According to the water pump 100 of the embodiment of the present application, on the one hand, the cost of the water pump 100 can be reduced and the working stability can be improved; on the other hand, the assembly difficulty can be reduced and the assembly accuracy and assembly efficiency can be improved.

[0067] Combination Figure 5 and Figure 6 As shown, according to some embodiments of the present application, the first limiting portion 12 is formed as a limiting buckle, and the second limiting portion 211 is constructed as a limiting plate, one end of the limiting plate is connected to the first end 21, and a limiting hole that cooperates with the limiting buckle is formed on the limiting plate.

[0068] Specifically, the first limiting portion 12 can be formed on the inner wall of the side plate, and the first limiting portion 12 is formed as a limiting buckle located on the inner wall of the side plate, corresponding to the second limiting portion 211 to form a limiting plate, and the limiting plate is connected to the end face of the first end 21 of the insulating frame or the side of the insulating frame, and a limiting hole is formed on the limiting plate, which is consistent with the radial projection contour of the limiting buckle, and the limiting buckle can be extended into the limiting hole, so as to improve the connection stability and reliability of the pump body assembly 10 and the stator assembly 20 through the snap-fitting cooperation between the first limiting portion 12 and the second limiting portion 211, reduce the probability of the pump body assembly 10 and the stator assembly 20 being out of coordination, and improve the reliability of the motor.

[0069] It should be pointed out that the limiting cooperation between the first limiting portion 12 and the second limiting portion 211 of the embodiment of the present application is not limited to this. In other embodiments, the first limiting portion 12 can also be formed as a limiting hole, but it needs to be formed as a blind hole, and the corresponding second limiting portion 211 is formed as a limiting buckle.

[0070] like Figure 6 As shown, further, a guiding inclined surface b is formed at the free end of the limiting plate.

[0071] Specifically, the cross-sectional area of ​​the guide slope b region formed by the limit plate gradually decreases in the direction away from the insulating frame, and the guide slope b can realize assembly guidance between the first limit portion 12 and the second limit portion 211 when the stator assembly 20 and the pump body assembly 10 are assembled, thereby further reducing the difficulty of assembly and improving assembly efficiency.

[0072] like Figure 2 , Figure 5 and Figure 6 As shown, in some embodiments, the first guide portion 13 is configured as a guide groove, the second guide portion 212 is configured as a guide column, and the guide column is connected to the first end 21 .

[0073] That is to say, the first guide portion 13 and the second guide portion 212 are constructed to be plug-in matched to achieve assembly guidance, and can limit the assembly angle of the stator assembly 20, improve assembly accuracy and assembly efficiency, and at the same time, the guide column is inserted into the guide groove, which can also achieve circumferential and radial limiting of the stator assembly 20, reduce the probability of circumferential rotation and radial transmission of the stator assembly 20, and further improve the working stability and reliability of the water pump 100.

[0074] It should be pointed out that the structure of the first guide portion 13 and the second guide portion 212 of the embodiment of the present application is not limited to this. In other embodiments, the first guide portion 13 can also be constructed as a guide protrusion structure that protrudes along the radial direction, and the corresponding second guide portion 212 is formed as a guide groove opened along the radial direction of the insulating frame, and the guide protrusion structure is plugged into the guide groove to achieve circumferential limiting and assembly guiding.

[0075] For example, during the process of the guide column or guide protrusion structure extending from one axial end to the other axial end, the cross-sectional area can be gradually increased, which can not only realize assembly guidance, but also enable the stator assembly 20 and the pump body assembly 10 to achieve interference fit, thereby further reducing the probability of the stator assembly 20 generating circumferential rotation or radial transmission. On the premise of eliminating structural glue and gluing processing, the connection stability and reliability between the stator assembly 20 and the pump body assembly 10 are ensured.

[0076] It should be pointed out that the second limiting portion 211 can be constructed as a wider boss structure formed on the stator core, the second guide portion 212 can be constructed as a narrower boss structure formed on the stator core, and the thickness of the second limiting portion 211 itself can be smaller than the thickness of the second guide portion 212 itself.

[0077] It can be understood that according to the water pump 100 of the embodiment of the present application, the volute 50 is welded and fixed to the pump body assembly 10, and the welding heat is suitable for causing the welding ribs 51 to deform due to heat, and the welding ribs 51 after deformation due to heat realize axial limitation of the water jacket 40, and the water jacket 40 and the stator assembly 20 are connected by the plug-in cooperation of the first plug-in portion 41 and the second plug-in portion 221, and the stator assembly 20 and the pump body assembly 10 are connected by the first limiting portion 12 and the second limiting portion 211, and the first guide portion 13 and the second guide portion 212, thereby realizing double axial limitation of the stator assembly 20.

[0078] Combination Figure 2 , Figure 6 as well as Figure 7 As shown, according to some embodiments of the present application, the water pump 100 also includes: a controller assembly 30, which is fixed to the pump body assembly 10 via a controller mounting column 213 formed at the first end 21, and the second guide portion 212 is suitable for pushing the controller assembly 30 to axially limit the controller assembly 30, and the controller assembly 30 is electrically connected to the pump body assembly 10 via a plurality of input terminals 23.

[0079] Among them, the controller assembly 30 is plugged into and matched with the input terminal 23 and the output terminal 17, the input terminal 23 is integrated in the stator assembly 20, and the output terminal 17 is integrated in the wiring harness plug-in part 15 of the pump body assembly 10, one end of the input terminal 23 is interference fitted with the insulating frame, and the other end is plugged into the controller assembly 30, the output terminal 17 is integrated and covered with the wiring harness plug-in part 15 (that is, the output terminal 17 is connected to the electrical connection part of the pump body assembly 10 (integrated with the wiring harness plug-in part 15) and the electrical connection part is electrically connected to the outside world), and is plugged into and matched with the controller assembly 30, and a controller mounting column 213 can be set on one side of the insulating frame located at the first end 21, and the controller assembly 30 is fixed to the stator assembly 20 by the controller mounting column 213.

[0080] Furthermore, the controller assembly 30 is arranged between the bottom plate of the pump body assembly 10 and the first end 21 of the stator assembly 20, which can improve the integration of the water pump 100, make the overall space occupancy of the water pump 100 lower, more compact, and meet the design requirements of miniaturization and lightweight, and a controller mounting column 213 can be arranged on the insulating frame, and the controller mounting column 213 can include a first column section and a second column section, the outer diameter of the first column section is larger than the outer diameter of the second column section, and a fixing hole is formed on the corresponding control board 31, and the aperture of the fixing hole is larger than the second column section and smaller than the first column section, so that the first column section can pass through the control board 31 and the second column section can push against the control board 31, so as to realize the fixation of the controller assembly 30 on the stator assembly 20, and realize the limiting of the controller assembly 30, so as to improve the reliability and stability of the controller assembly 30.

[0081] At the same time, a plug-in limiting structure can be formed on at least one second guide portion 212, and plug-in fixation and axial limitation can be achieved with the controller assembly 30, so that the clamping and fixing stability of the controller assembly 30 between the pump body assembly 10 and the stator assembly 20 is higher.

[0082] Combination Figure 5 and Figure 7 As shown, further, a second limit boss 14 is provided on the bottom wall of the accommodating space a, the second limit boss 14 extends circumferentially and is suitable for pushing against the control plate 31 of the limit controller assembly 30, and the second limit boss 14 is connected to the first limit boss 11, or is connected to the first guide portion 13.

[0083] Specifically, the control plate 31 can be constructed as a rectangular plate or a circular plate, and a plurality of second limiting bosses 14 can be circumferentially arranged on the side plate, wherein the radial extension length of the second limiting boss 14 is greater than the extension length of the first limiting boss 11, and the axial extension length of the second limiting boss 14 is less than the axial extension length of the first limiting boss 11, so that the control plate 31 can be clamped and limited on both sides of the axial direction of the control plate 31 by the second limiting boss 14 and the second column section, thereby further improving the fixing stability and reliability of the controller assembly 30.

[0084] Furthermore, in order to facilitate the processing of the shell, the first limiting boss 11 can be connected to a second limiting boss 14, and the first guide portion 13 can also be connected to a second limiting boss 14 to reduce the processing difficulty.

[0085] like Figure 5 and Figure 7As shown, further, the pump body assembly 10 also has a wiring harness plug-in portion 15, which is arranged on the bottom wall of the accommodating space a, and an output terminal 17 is arranged on the wiring harness plug-in portion 15, and the output terminal 17 is electrically connected to the controller assembly 30, and a third limiting portion 151 is arranged on the wiring harness plug-in portion 15, and the controller assembly 30 has a fourth limiting portion 31 that is plugged into and matched with the third limiting portion 151.

[0086] Specifically, a plurality of electrical connection slots can be formed on the wiring harness plug-in portion 15, and the output terminals 17 can be respectively inserted into the corresponding electrical connection slots and integrated to realize the electrical connection between the pump body assembly 10 and the stator assembly 20, and the plug-in cooperation between the third limiting portion 151 and the fourth limiting portion 31 can realize the fixation and limitation of the controller assembly 30, so that the electrical connection assembly between the controller assembly 30 and the pump body assembly 10 is easier to assemble, the probability of movement of the controller assembly 30 is lower, and the electrical connection stability and reliability are higher.

[0087] For example, the third limiting portion 151 can be configured as a plug-in column, and the corresponding fourth limiting portion 31 can be configured as a through hole on the controller assembly 30, and the plug-in column can be provided with a through hole to achieve the plug-in matching and limiting of the third limiting portion 151 and the fourth limiting portion 31. Other structures and operations of the water pump 100 according to the embodiment of the utility model are known to ordinary technicians in this field and will not be repeated here.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0089] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A water pump, characterized in that: include: A pump body assembly (10), wherein the pump body assembly (10) has an accommodating space (a); A stator assembly (20), the stator assembly (20) being arranged in the accommodating space (a), the stator assembly (20) having a first end (21) and a second end (22) opposite to each other in the axial direction, the first end (21) extending into the accommodating space (a); a water jacket (40), the water jacket (40) being connected to the pump body assembly (10) and at least partially located at the second end (22); A volute (50), the volute (50) is covered at one end of the opening of the accommodating space (a), a welding rib (51) is formed on the inner wall of the volute (50), the volute (50) is welded to the pump body assembly (10), and the welding rib (51) is suitable for deformation due to heat and is connected to the water jacket (40) to push against and limit the water jacket (40) along the axial direction of the water pump.

2. The water pump according to claim 1, characterized in that: The water jacket (40) is provided with a guide side wall (41) on the side facing the pump body assembly (10), and a first plug-in portion (42) is provided on the guide side wall (41); the second end (22) is provided with a second plug-in portion (221) pluggably matched with the first plug-in portion (42), and interference ribs (2211) are provided on the first plug-in portion (42) and / or on the second plug-in portion (221).

3. The water pump according to claim 2, characterized in that: A fixing boss (43) is also provided on the guide side wall (41), and a fixing groove (16) matching with the fixing boss (43) is provided at an open end of the accommodating space (a) of the pump body assembly (10).

4. The water pump according to claim 1, characterized in that: A first limiting boss (11), a first limiting portion (12) and a first guiding portion (13) are provided on the inner wall of the pump body assembly (10); the first end (21) is provided with a second limiting portion (211) cooperating with the first limiting portion (12) and a second guiding portion (212) cooperating with the first guiding portion (13); and the first limiting boss (11) is suitable for pushing against the end surface of the first end (21).

5. The water pump according to claim 4, characterized in that: The first limiting portion (12) is formed as a limiting buckle, and the second limiting portion (211) is constructed as a limiting plate, one end of the limiting plate is connected to the first end (21), and a limiting hole is formed on the limiting plate to cooperate with the limiting buckle.

6. The water pump according to claim 5, characterized in that: The free end of the limiting plate is formed with a guiding inclined surface (b).

7. The water pump according to claim 4, characterized in that: The first guide portion (13) is configured as a guide groove, the second guide portion (212) is configured as a guide column, and the guide column is connected to the first end (21).

8. The water pump according to claim 7, characterized in that: The water pump further comprises: a controller assembly (30), wherein the controller assembly (30) is fixed to the pump body assembly (10) via a controller mounting column (213) formed at the first end (21), and the second guide portion (212) is suitable for pushing against the controller assembly (30) to axially limit the controller assembly (30), and the controller assembly (30) is electrically connected to a plurality of input terminals (23) of the pump body assembly (10).

9. The water pump according to claim 8, characterized in that A second limiting boss (14) is provided on the bottom wall of the accommodating space (a), the second limiting boss (14) extends in the circumferential direction and is suitable for pushing and limiting the controller assembly (30), the second limiting boss (14) is connected to the first limiting boss (11) or connected to the first guide portion (13).

10. The water pump according to claim 9, characterized in that The pump body assembly (10) further comprises a wiring harness plug-in portion (15), wherein the wiring harness plug-in portion (15) is arranged on the bottom wall of the accommodating space (a), and an output terminal (17) is arranged on the wiring harness plug-in portion (15), wherein the output terminal (17) is electrically connected to the controller assembly (30), and a third limiting portion (151) is arranged on the wiring harness plug-in portion (15), and the controller assembly (30) comprises a fourth limiting portion (31) which is plugged into and matched with the third limiting portion (151).

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