Stator assembly, motor and washing apparatus

Abstract

The application discloses a kind of stator assembly, motor and washing equipment, belong to motor technical field, wherein stator assembly includes stator core, insulating frame, terminal and multiphase winding, multiphase winding is wound on insulating frame, by setting terminal seat in insulating frame, terminal is connected with terminal seat by mounting portion, so that terminal can be installed on terminal seat;Wherein one phase winding is provided with first lead-out wire, the rest phase winding is connected to form second lead-out wire, first lead-out wire is welded and fixed with the first soldering portion of terminal, second lead-out wire is welded and fixed with the second soldering portion of terminal, so that first lead-out wire and second lead-out wire are electrically connected, realize the star connection of multiphase winding, since first soldering portion and second soldering portion are spaced apart on mounting portion, the soldering position of first lead-out wire and second lead-out wire can be separated, effectively solve the problem that mutual adhesion is prone to occur when soldering, so that welding is more firm, improve motor operating stability.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and in particular to a stator assembly, a motor, and a washing device. Background Technology

[0002] In related technologies, the ends of the windings of each phase in a three-phase motor are connected by leads to form a star connection. The leads are fixedly connected by soldering. Due to unreasonable design of the soldering position of the terminals, the solder of different leads can easily stick together, resulting in poor soldering and affecting the stability of the motor. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a stator assembly that can separate the soldering positions of different leads, effectively solving the problem of solder easily sticking together during soldering and improving the stability of motor operation.

[0004] The present invention also provides a motor and a washing device including the above-described stator assembly.

[0005] According to a first aspect of the present invention, a stator assembly includes a stator core, an insulating frame, terminals, and multiphase windings. The insulating frame is disposed on the stator core and has a terminal block. The multiphase windings are wound around the insulating frame, wherein one phase winding has a first lead wire, and the remaining phase windings are connected to form a second lead wire. The terminal includes a first bonding portion, a second bonding portion, and a mounting portion. The first bonding portion and the second bonding portion are spaced apart and connected to the mounting portion. The terminal is connected to the terminal block through the mounting portion. The first bonding portion is welded to the first lead wire, and the second bonding portion is welded to the second lead wire, so that the first lead wire and the second lead wire are electrically connected.

[0006] The stator assembly according to embodiments of the present invention has at least the following beneficial effects:

[0007] Multiphase windings are wound on an insulating frame. Terminal blocks are installed on the insulating frame, and terminals are connected to the terminal blocks via mounting parts, allowing the terminals to be installed on the terminal blocks. One phase winding has a first lead, and the remaining phase windings are connected to form a second lead. The first lead is welded to the first soldering part of the terminal, and the second lead is welded to the second soldering part of the terminal, making the first lead and the second lead electrically connected, realizing a star connection of the multiphase windings. Since the first soldering part and the second soldering part are spaced apart on the mounting part, the soldering positions of the first lead and the second lead are separated, effectively solving the problem of easy sticking during soldering, making the soldering more solid and improving the stability of motor operation.

[0008] According to some embodiments of the present invention, the terminal is provided with a first limiting groove and a second limiting groove. The first limiting groove is located at one end of the first bonding portion away from the second bonding portion and is used to limit the first lead wire. The second limiting groove is located at one end of the second bonding portion away from the first bonding portion and is used to limit the second lead wire.

[0009] According to some embodiments of the present invention, the first wire bonding portion is provided with a first wire clamping post and a second wire clamping post, and a first limiting groove is formed between the first wire clamping post and the second wire clamping post. The first wire clamping post and the second wire clamping post cooperate to clamp the first lead wire.

[0010] According to some embodiments of the present invention, a notch is formed between the first welding wire portion and the second welding wire portion, the side of the first welding wire portion away from the stator core is the welding end face, the first lead wire is disposed along the side of the second welding wire portion away from the second lead wire, and extends to the welding end face of the first welding wire portion through the notch.

[0011] According to some embodiments of the present invention, a third limiting groove is provided on the side of the first bonding wire portion facing the notch, and the first lead wire passes through the notch along the third limiting groove.

[0012] According to some embodiments of the present invention, a first limiting post is provided on the side of the second bonding wire portion facing the notch, and the first limiting post is used to limit the second lead wire, so that the second lead wire is spaced apart from the first bonding wire portion.

[0013] According to some embodiments of the present invention, a gap is formed between the first bonding wire portion and the second bonding wire portion, a second limiting post is provided on the side of the first bonding wire portion facing the gap, the first lead wire is provided with a first bent section, and the first bent section is wound around the second limiting post; a third limiting post is provided on the side of the second bonding wire portion facing the gap, the second lead wire is provided with a second bent section, and the second bent section is wound around the third limiting post.

[0014] According to some embodiments of the present invention, the minimum gap between the first bonding portion and the second bonding portion is greater than or equal to 0.5 mm.

[0015] According to some embodiments of the present invention, the mounting part is a connecting plate, the first welding part and the second welding part are connected to both ends of the connecting plate, the terminal block is provided with a mounting groove, and the connecting plate is interference-fitted with the mounting groove.

[0016] According to some embodiments of the present invention, the stator assembly further includes a protective housing made of insulating material, the protective housing being connected to the terminal block and covering the terminals.

[0017] According to some embodiments of the present invention, the terminal block is provided with a snap fastener and a positioning boss, and the protective shell is provided with a snap-fit ​​hole and a positioning hole. The snap-fit ​​hole engages with the snap fastener, and the positioning hole engages with the positioning boss.

[0018] According to some embodiments of the present invention, the protective shell includes a side plate, the inner wall of the side plate is provided with a fourth limiting groove, and the end of the second welding wire portion facing the side plate is provided with a limiting protrusion, the limiting protrusion being positioned and engaged with the fourth limiting groove.

[0019] The motor according to a second aspect embodiment of the present invention includes the stator assembly described in the first aspect embodiment above.

[0020] The motor according to embodiments of the present invention has at least the following beneficial effects:

[0021] The motor uses the stator assembly of the above embodiment, and the multiphase winding can realize a star connection. Since the first solder part and the second solder part of the terminal are arranged at intervals on the mounting part, the solder positions of the first lead and the second lead can be separated, which effectively solves the problem of mutual adhesion during soldering, making the soldering more firm and improving the stability of motor operation. It is suitable for washing equipment such as washing machines.

[0022] A washing apparatus according to a third aspect embodiment of the present invention includes the motor described in the second aspect embodiment above.

[0023] The washing apparatus according to embodiments of the present invention has at least the following beneficial effects:

[0024] The washing equipment using the motor of the above embodiment, since the first soldering part and the second soldering part of the terminal are arranged alternately on the mounting part, can separate the soldering positions of the first lead wire and the second lead wire, effectively solving the problem of easy sticking of solder together during soldering, making the soldering more firm and improving the stability of motor operation.

[0025] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of a stator assembly according to an embodiment of the present invention (with the protective shell covering it).

[0027] Figure 2 This is a three-dimensional structural schematic diagram of a stator assembly according to an embodiment of the present invention (with the protective shell separated);

[0028] Figure 3 This is a top view of a stator assembly according to an embodiment of the present invention;

[0029] Figure 4 yes Figure 2 Enlarged structural diagram at point A;

[0030] Figure 5 This is an exploded structural diagram of a terminal and terminal block according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of a terminal according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the terminal structure according to another embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of a frame unit according to an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the structure of a protective shell according to an embodiment of the present invention;

[0035] Figure 10 yes Figure 3 Cross-sectional structure diagram in the middle BB direction

[0036] Figure 11 yes Figure 10 Enlarged structural diagram at point C;

[0037] Figure 12 This is a schematic diagram of the body structure of a stator assembly according to another embodiment of the present invention;

[0038] Figure 13 yes Figure 12 A magnified structural diagram at point D.

[0039] Figure label:

[0040] Stator assembly 1000;

[0041] Stator core 100;

[0042] Insulating frame 200; frame unit 210; winding groove 211; cable outlet 220; terminal block 230; mounting groove 231; snap fastener 232; positioning boss 233; reinforcing rib 234; flange 235;

[0043] Winding 300; First lead 310; First bend 311; Second lead 320; Second bend 321; Third bend 322;

[0044] Terminal 400; First wire bonding portion 410; Third limiting groove 411; Second limiting post 412; Second wire bonding portion 420; First limiting post 421; Third limiting post 422; Limiting protrusion 423; Mounting portion 430; Connecting plate 431; Protrusion 4311; First limiting groove 440; First wire clamping post 441; Second wire clamping post 442; Second limiting groove 450; Third wire clamping post 451; Fourth wire clamping post 452; Notch 460;

[0045] Protective shell 500; top plate 510; snap-fit ​​hole 511; positioning hole 512; side plate 520; fourth limiting groove 521. Detailed Implementation

[0046] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0047] In the description of this invention, it should be understood that the terms upper, lower, axial, circumferential, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0048] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0049] In the description of this invention, it should be noted that terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0050] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of the present invention, not all embodiments.

[0051] In washing machines, the three-phase motor is a key component driving the drum's rotation. Compared to single-phase motors, three-phase motors have advantages such as higher power, more stable operation, and longer service life, better meeting the needs of washing machines and providing better washing results. In related technologies, the ends of the windings of each phase in a three-phase motor are connected by leads to form a star connection. These leads are fixed to terminals by soldering. However, due to the close proximity of the solder joints at the terminals, an improper design can cause solder to flow during soldering, easily leading to solder adhesion between different leads, resulting in poor soldering and affecting the motor's stability.

[0052] To address the aforementioned problems, embodiments of the present invention provide a stator assembly 1000 suitable for a washing machine motor, specifically a three-phase motor. The stator assembly 1000 of a three-phase motor will be used as a specific example for the following description.

[0053] Reference Figure 1 and Figure 2 As shown, the stator assembly 1000 of this embodiment includes a stator core 100, an insulating frame 200, and a winding 300. The insulating frame 200 is mounted on the stator core 100 and includes multiple frame units 210. The multiple frame units 210 are arranged along the circumference of the stator core 100 on the teeth of the stator core 100. The winding 300 is a three-phase winding 300, which is wound on the insulating frame 200. Each frame unit 210 is wound with a coil. The insulating frame 200 can separate the winding 300 from the stator core 100 to ensure better insulation performance.

[0054] Reference Figure 2 and Figure 4 As shown in the embodiment, the insulating frame 200 is provided with a terminal block 230, which is located at the end of the insulating frame 200 along the axial direction of the stator core 100. A terminal 400 is installed on the terminal block 230. After the multi-phase winding 300 is wound, one phase winding 300 is provided with a first lead wire 310, and the other two phase windings 300 are connected and provided with a second lead wire 320.

[0055] It should be noted that, in this embodiment, the three-phase winding 300 consists of twelve coils, with each phase winding 300 including four coils. Four coils are connected in series to form phase A winding, four coils are connected in series to form phase B winding, and another four coils are connected in series to form phase C winding. The ends of the three-phase winding 300 are connected to form a star connection. Terminals 400 are used to solder the leads at the ends of the three-phase winding 300. During the winding process of the winding 300, the end of one phase winding 300 can lead out a first lead 310, and the ends of the other two phase windings 300 will be connected together to form a second lead 320. For example, the end of phase A winding is the first lead 310, and the ends of phase B winding and phase C winding are connected to form the second lead 320. Therefore, the ends of the three-phase winding 300 only need to be connected through the first lead 310 and the second lead 320 to achieve the purpose of a star connection. This is just an example. The number of coils in a three-phase winding 300 is not limited to twelve. It can also be nine, fifteen or more, depending on the application requirements.

[0056] Reference Figure 1 and Figure 2 As shown, it can be understood that the insulating frame 200 is also provided with a terminal block 220, and the other end of each phase winding 300 is connected to the terminal block 220. The terminal block 220 is used to connect the power supply line of the motor.

[0057] Reference Figure 5 As shown, it can be understood that the terminal 400 is made of metal, such as copper sheet, which has good conductivity. The terminal 400 includes a first bonding portion 410, a second bonding portion 420, and a mounting portion 430. The first bonding portion 410 and the second bonding portion 420 are connected to the two ends of the mounting portion 430, thus separating the first bonding portion 410 and the second bonding portion 420. In this embodiment, the first bonding portion 410, the second bonding portion 420, and the mounting portion 430 adopt an integral molding structure. The terminal 400 is connected to the terminal base 230 through the mounting portion 430. The mounting portion 430 can be connected to the terminal base 230 by means of plugging, snapping, etc. The first bonding portion 410 is welded to the first lead 310, and the second bonding portion 420 is welded to the second lead 320, so that the first lead 310 and the second lead 320 can be electrically connected, thereby realizing the star connection of the three-phase winding 300.

[0058] Reference Figure 4As shown, it can be understood that the first lead 310 is soldered to the upper end face of the first soldering part 410, and the second lead 320 is soldered to the upper end face of the second soldering part 420. Since the first soldering part 410 and the second soldering part 420 are spaced apart on the mounting part 430, when soldering the first lead 310 and the second lead 320, the solder position of the first lead 310 and the solder position of the second lead 320 can be separated, making it less likely for the solder of the two leads to stick together, reducing the problem of poor soldering, ensuring the stability of the soldering structure, making the soldering more firm, and improving the stability of motor operation.

[0059] Reference Figure 4 and Figure 5 As shown, in some embodiments, a notch 460 is formed between the first bonding wire portion 410 and the second bonding wire portion 420. The minimum gap between the first bonding wire portion 410 and the second bonding wire portion 420 at the notch 460 is set to be greater than or equal to 0.5 mm, specifically 0.5 mm, 1 mm, 2 mm, etc. This minimum gap can be understood as the minimum distance between the edge of the first bonding wire portion 410 and the edge of the second bonding wire portion 420. When the above-mentioned gap requirement is met, the solder of one bonding wire portion can be prevented from flowing to the other bonding wire portion during welding, thereby affecting the welding operation of the other bonding wire portion, preventing the solder from sticking together, effectively solving the problem of poor soldering caused by solder sticking together, and also meeting the size requirements of the safety electrical clearance. The specific gap size is selected according to the actual application requirements.

[0060] Reference Figure 5 As shown, it can be understood that the terminal block 230 can be disposed on one of the frame units 210. Specifically, the terminal block 230 protrudes from the end of the frame unit 210, and the terminal block 230 and the frame unit 210 are integrally injection molded, giving the terminal block 230 insulation and a stable and reliable structure. When the terminal 400 is connected to the terminal block 230, it can ensure good insulation performance. It should be noted that the frame unit 210 has a winding groove 211 for winding the coil on the side near the center of the stator core 100, and the terminal block 230 is disposed on one side of the winding groove 211, which facilitates the lead wire to be led out to the terminal 400.

[0061] In some embodiments, multiple terminal blocks 230 may be provided on the insulating frame 200. During the production process, one of the terminal blocks 230 can be selected to be installed with the terminal 400 according to the assembly requirements, making assembly flexible and convenient. This is only an example. In some embodiments, the terminal block 230 and the insulating frame 200 may also adopt a separate structure, that is, the terminal block 230 is connected to the end of the frame unit 210.

[0062] Reference Figure 6As shown, the terminal 400 of this embodiment of the invention is provided with a first limiting groove 440 and a second limiting groove 450. The first limiting groove 440 is located at the end of the first bonding portion 410 away from the second bonding portion 420, and the first lead wire 310 is limited by the first limiting groove 440. The second limiting groove 450 is located at the end of the second bonding portion 420 away from the first bonding portion 410, and the second lead wire 320 is limited by the second limiting groove 450, so that both the first lead wire 310 and the second lead wire 320 can be positioned.

[0063] Combination Figure 4 It can be understood that, in the circumferential direction of the stator core 100, the first limiting groove 440 and the second limiting groove 450 are located at both ends of the terminal 400, the first lead 310 passes through the first limiting groove 440, and the second lead 320 passes through the second limiting groove 450. Figure 4 The direction indicated by the middle arrow is the routing direction of the first lead 310 and the second lead 320. During soldering, the first limiting groove 440 allows the first lead 310 to be accurately positioned on the upper end face of the first soldering section 410, and the second limiting groove 450 allows the second lead 320 to be accurately positioned on the upper end face of the second soldering section 420, facilitating rapid soldering of the first lead 310 and the second lead 320 and preventing the two leads from deviating from the soldering position.

[0064] Reference Figure 6 As shown, the first wire bonding section 410 of this embodiment of the invention is provided with a first wire clamping post 441 and a second wire clamping post 442. The first wire clamping post 441 and the second wire clamping post 442 are spaced apart and a first limiting groove 440 is formed between them. When the first lead wire 310 passes through the first limiting groove 440, the first lead wire 310 can be clamped by the cooperation of the first wire clamping post 441 and the second wire clamping post 442.

[0065] Understandably, during automatic winding, the first lead wire 310 is arranged into the first limiting groove 440 on one side of the terminal 400 by the winding needle. The first lead wire 310 is positioned at the first bonding section 410. The tooling squeezes the first clamping post 441 and the second clamping post 442 to clamp and fix the first lead wire 310, preventing it from coming loose. Then, the excess part on the first lead wire 310 is cut off, and the paint on the first lead wire 310 located at the first bonding section 410 is vaporized by laser. The robot arm welds the paint-removed first lead wire 310 to the first bonding section 410, thereby completing the welding of the first lead wire 310.

[0066] It should be noted that the second wire bonding section 420 is provided with a third wire clamping post 451 and a fourth wire clamping post 452 spaced apart. The third wire clamping post 451 and the fourth wire clamping post 452 cooperate to define the second limiting groove 450. Considering that the other two phase windings 300 are connected by the second lead wire 320, for example, multiple coils in the B phase winding are connected in series and then connected in series with the coils in the C phase winding 300, the connection between the B phase winding and the C phase winding is the second lead wire 320. After the two phase windings 300 are wound, the second lead wire 320 is clamped in the second limiting groove 450 and is in a tensioned state. Therefore, in this embodiment, it is not necessary to use the third wire clamping post 451 and the fourth wire clamping post 452 to clamp the second lead wire 320.

[0067] Reference Figure 6 As shown, in this embodiment of the invention, the terminal 400 is formed by bending a plate to create a mounting portion 430, a first bonding portion 410, and a second bonding portion 420. The mounting portion 430 is a connecting plate 431. The first bonding portion 410 and the second bonding portion 420 are connected to both ends of the connecting plate 431. The connecting plate 431 extends downwards, and a notch 460 is formed between the first bonding portion 410 and the second bonding portion 420. Figure 4 It can be understood that the second lead wire 320 is soldered to the upper end face of the second soldering part 420, and the first lead wire 310 is provided along the side of the second soldering part 420 away from the second lead wire 320, and extends to the upper end face of the first soldering part 410 through the notch 460. That is, the first lead wire 310 passes through the bottom of the second soldering part 420, the notch 460, the upper end face of the first soldering part 410 and the first limiting groove 440 in sequence.

[0068] It is understandable that by providing a notch 460 between the first wire bonding portion 410 and the second wire bonding portion 420, and when the minimum gap between the first wire bonding portion 410 and the second wire bonding portion 420 is greater than or equal to 0.5mm, it is possible to facilitate the passing of the winding needle and to avoid the winding needle.

[0069] Reference Figure 6 As shown, a third limiting groove 411 is provided on the side of the first welding section 410 facing the notch 460. The third limiting groove 411 is located on the side wall of the notch 460, and is combined with... Figure 4 It can be understood that the routing direction of the first lead 310 is from bottom to top. When the first lead 310 passes through the notch 460, the first lead 310 can contact the edge of the first bonding section 410 and just fit into the third limiting groove 411, thereby limiting the first lead 310 through the third limiting groove 411. The third limiting groove 411 and the first limiting groove 440 can be symmetrically arranged at both ends of the first bonding section 410. Through the cooperation of the two, the first lead 310 can be accurately positioned in the middle position of the first bonding section 410, which facilitates rapid welding.

[0070] It should be noted that, Figure 6 In the embodiment shown, the sidewall of the first wire bonding portion 410 is recessed to form a third limiting groove 411, and the third limiting groove 411 is integrally formed with the terminal 400; this is only an example, and the third limiting groove 411 can also be defined by two wire clamping posts arranged at intervals. The specific form of the third limiting groove 411 can be set according to the application requirements.

[0071] Reference Figure 6 As shown, a first limiting post 421 is provided on the side of the second bonding section 420 facing the notch 460. The first limiting post 421 is used to limit the second lead wire 320. The first limiting post 421 is spaced apart from the second bonding section 420, or the first limiting post 421 can be connected to the side of the second bonding section 420; combined with Figure 4 It can be understood that the second lead 320 passes through the second limiting groove 450 and the second bonding part 420 in sequence, and then the second lead 320 abuts against the side wall of the first limiting post 421. After the second lead 320 passes around the first limiting post 421, it can be bent towards the winding groove 211 for routing. In this way, the first limiting post 421 limits the second lead 320, which facilitates the routing of the second lead 320. After being limited, the second lead 320 and the first bonding part 410 can be spaced apart to avoid the second lead 320 contacting the first bonding part 410 and causing poor soldering.

[0072] It should be noted that, referring to Figure 6 As shown, considering that the second lead wire 320 needs to be bent for routing when passing through the second limiting groove 450, and then needs to be bent a second time for routing when passing through the first limiting post 421, please refer to [reference needed]. Figure 12 and Figure 13 The winding direction of the second lead wire 320 in the embodiment shown; the third wire clamping post 451 and the first limiting post 421 cooperate to limit the second lead wire 320, ensuring that the routing of the second lead wire 320 is more stable and reliable.

[0073] Reference Figure 7 As shown, the present invention provides a terminal 400 according to another embodiment, wherein a first bonding portion 410 and a second bonding portion 420 are connected to both ends of a mounting portion 430, and the first bonding portion 410 and the second bonding portion 420 are separated by a notch 460. The first bonding portion 410 is provided with a first limiting groove 440, and the second bonding portion 420 is provided with a second limiting groove 450. Figure 6 The difference in the illustrated embodiment is that a second limiting post 412 is provided at one end of the first bonding portion 410 near the second bonding portion 420, and a third limiting post 422 is provided at one end of the second bonding portion 420 near the first bonding portion 410. Both the first lead wire 310 and the second lead wire 320 are wound around the upper side of the terminal 400. Figure 7 The winding method of the first lead 310 and Figure 6 The winding method of the first lead 310 is different.

[0074] It should be noted that, Figure 7 In the illustrated embodiment, the first wire-clamping post 441 and the second wire-clamping post 442 are respectively formed by bending the ends of the terminal 400. The bending directions of the two flanges are opposite to each other, which facilitates the relative bending deformation of the first wire-clamping post 441 and the second wire-clamping post 442, making it easier to clamp the first lead wire 310. For example, the first wire-clamping post 441 can be bent toward the second wire-clamping post 442, making the size of the first limiting groove 440 smaller, thereby clamping the first lead wire 310.

[0075] Reference Figure 12 and Figure 13 As shown, specifically, the first lead wire 310 is bent to form a first bent section 311. The second limiting post 412 limits the first bent section 311. After the first bent section 311 passes around the second limiting post 412, it passes through the first welding part 410 and the first limiting groove 440. After the first lead wire 310 is clamped by the first limiting groove 440, the part of the first lead wire 310 protruding from the first limiting groove 440 is cut off. Then the first lead wire 310 is welded to achieve the electrical connection between the first lead wire 310 and the terminal 400.

[0076] Reference Figure 12 and Figure 13 As shown, the second lead 320 is bent to form a second bent section 321 and a third bent section 322. The third limiting post 422 limits the second bent section 321, and the third wire clamping post 451 limits the third bent section 322, so that the second lead 320 is effectively fixed. Then, the second lead 320 is welded to realize the electrical connection between the second lead 320 and the terminal 400.

[0077] Reference Figure 5 and Figure 8 As shown in the embodiment of the present invention, the mounting part 430 is a connecting plate 431, and the terminal block 230 is provided with a mounting groove 231 that matches the connecting plate 431. The side wall of the connecting plate 431 is provided with a protrusion 4311. When the connecting plate 431 is inserted into the mounting groove 231, the protrusion 4311 enables the connecting plate 431 to be interference-fitted with the mounting groove 231, thereby achieving the purpose of fastening and making the installation simple.

[0078] Reference Figure 8As shown, it should be noted that a reinforcing rib 234 protrudes from the outer wall of the terminal block 230. The position of the reinforcing rib 234 corresponds to the position of the protrusion 4311 along the radial direction of the stator core 100. The reinforcing rib 234 can improve the strength of the side wall of the mounting groove 231, ensure the bonding force between the protrusion 4311 and the mounting groove 231, and prevent the terminal 400 from loosening during winding. In this embodiment, there are two protrusions 4311 and two reinforcing ribs 234. This is only an example, and the specific number of protrusions 4311 and reinforcing ribs 234 can be set according to application requirements.

[0079] Reference Figure 1 and Figure 2 As shown, the stator assembly 1000 of this embodiment of the invention also includes a protective shell 500. The protective shell 500 is made of insulating material, such as plastic integral injection molding. The protective shell 500 is connected to the terminal block 230. The protective shell 500 can cover the terminal 400 and cover the first lead 310 and the second lead 320 on the terminal 400, thus playing a protective role. It can reduce the impact of the injection molded body on the two welding parts and the two lead wires during injection molding of the stator assembly 1000, and improve the structural stability.

[0080] Reference Figure 9 As shown, the protective shell 500 includes a top plate 510 and a side plate 520. The side plate 520 is arranged along the outer periphery of the top plate 510. The top plate 510 is provided with a snap-fit ​​hole 511 and a positioning hole 512. The top of the terminal block 230 is provided with a buckle 232 and a positioning boss 233. The snap-fit ​​hole 511 is engaged with the buckle 232, and the positioning hole 512 is positioned with the positioning boss 233.

[0081] Combination Figure 3 , Figure 10 and Figure 11 It can be understood that when the protective shell 500 is placed on the terminal block 230, the positioning boss 233 is inserted into the positioning hole 512 for positioning, which plays a positioning role for the protective shell 500; at the same time, the buckle 232 is inserted into the snap-fit ​​hole 511 for snap-fit, which plays a fixing role, preventing the protective shell 500 from falling off the terminal block 230, so that the protective shell 500 can be quickly assembled into place.

[0082] Reference Figure 8 and Figure 9As shown, it can be understood that a flange 235 is provided on the top of the terminal block 230 near the winding 300. A snap fastener 232 and a positioning boss 233 protrude from the flange 235. A snap-fit ​​hole 511 and a positioning hole 512 are provided on the edge near the top plate 510. A side plate 520 is provided on both sides of the top plate 510 along its length and on the side away from the flange 235. That is, the protective shell 500 is open on the side facing the winding 300. During installation, the top plate 510 and the terminal block 230 are assembled into place through the above-mentioned snap-fit ​​and positioning structure. The side plate 520 surrounds the terminal block 230, thereby covering the two welding wire parts and the two lead wires, and playing an effective protective role.

[0083] Reference Figure 6 and Figure 9 As shown, the second welding wire portion 420 has a limiting protrusion 423 at one end facing the side plate 520, and the inner wall of the side plate 520 has a fourth limiting groove 521. Through the positioning cooperation between the limiting protrusion 423 and the fourth limiting groove 521, the side plate 520 can be positioned, improving the stability of the protective shell 500. Furthermore, Figure 6 In the embodiment shown, since the first lead wire 310 runs along the bottom of the second welding section 420, after the protective shell 500 is assembled, the cooperation between the limiting protrusion 423 and the fourth limiting groove 521 can restrict the first lead wire 310 from sliding along the gap between the second welding section 420 and the side plate 520 to the upper side of the second welding section 420, so as to avoid affecting the welding of the second lead wire 320.

[0084] Reference Figure 12 As shown, it can be understood that the stator assembly 1000 in this embodiment of the invention can adopt a strip-shaped or block-shaped stator core 100. After the winding and welding of the winding 300 are completed, the strip-shaped stator assembly 1000 is connected from the first end to the last end and rolled into an annular stator assembly 1000. The winding method of the first lead 310 and the second lead 320 is as follows. Figure 13 The structure shown allows the first lead 310 and the second lead 320 to be soldered alternately to the terminal 400, realizing a star connection of the winding 300. This effectively solves the problem of solder sticking at the soldering point, which can lead to poor soldering. Of course, this is only an example. The stator assembly 1000 in this embodiment can also use an integral stator core 100, depending on the application requirements.

[0085] The embodiments of the present invention also provide a motor, which uses the stator assembly 1000 of the above embodiments. Specifically, the motor is a three-phase motor suitable for washing machines. The motor also includes other components such as rotor and bearings. The three-phase motor has the advantages of high power, stable operation and long service life, which enables the washing machine to have better washing effect.

[0086] Reference Figure 1 and Figure 2 As shown, in the stator assembly 1000 of this embodiment, the first lead 310 is welded to the first bonding portion 410, and the second lead 320 is welded to the second bonding portion 420, enabling the first lead 310 and the second lead 320 to be electrically connected, thus realizing a star connection of the three-phase winding 300. Since the first bonding portion 410 and the second bonding portion 420 are spaced apart on the mounting portion 430, the solder on the two leads is less likely to stick together, reducing the problem of poor soldering, ensuring the stability of the welded structure, making the weld more robust, and improving the operational stability of the motor.

[0087] Since the motor adopts all the technical solutions of the stator assembly 1000 of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0088] Embodiments of the present invention also provide a washing device, which may be a washing machine or other washing appliances. The washing device uses the motor described in the above embodiments. Taking a washing machine as an example, the motor is installed inside the washing machine and drives the drum of the washing machine to rotate, so that the washing machine has a better washing effect.

[0089] Since the washing equipment adopts all the technical solutions of the stator assembly 1000 of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0090] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A stator assembly, characterized by, The application relates to a terminal for a motor stator. The terminal comprises a first soldering part, a second soldering part and a mounting part, the first soldering part and the second soldering part are connected to the mounting part at intervals, the terminal is connected to the terminal seat through the mounting part, the first soldering part is soldered to the first lead-out wire, the second soldering part is soldered to the second lead-out wire, the first lead-out wire and the second lead-out wire are electrically connected, the first lead-out wire is soldered to the upper end surface of the first soldering part, and the second lead-out wire is soldered to the upper end surface of the second soldering part. The terminal is provided with a first limiting groove and a second limiting groove, the first limiting groove is located at one end of the first soldering part away from the second soldering part and is used for limiting the first lead-out wire, the second limiting groove is located at one end of the second soldering part away from the first soldering part and is used for limiting the second lead-out wire, the first soldering part is provided with a first wire clamping column and a second wire clamping column, the first wire clamping column and the second wire clamping column form the first limiting groove, and the first wire clamping column and the second wire clamping column are matched to clamp the first lead-out wire, a gap is formed between the first soldering part and the second soldering part, the first lead-out wire can pass through the gap, and the minimum gap between the first soldering part and the second soldering part is greater than or equal to 0.5 mm. The side, away from the stator core, of the first soldering part is a soldering end surface, the first lead-out wire is arranged along the side, away from the second lead-out wire, of the second soldering part and extends to the soldering end surface through the gap. The side, towards the gap, of the first soldering part is provided with a third limiting groove, and the first lead-out wire is arranged in the gap along the third limiting groove. The side, towards the gap, of the second soldering part is provided with a first limiting column, the first limiting column is used for limiting the second lead-out wire, and the second lead-out wire is arranged at intervals with the first soldering part.

2. The stator assembly of claim 1, wherein, The side, towards the gap, of the first soldering part is provided with a second limiting column, the first lead-out wire is provided with a first bending section, and the first bending section is arranged around the second limiting column; the side, towards the gap, of the second soldering part is provided with a third limiting column, the second lead-out wire is provided with a second bending section, and the second bending section is arranged around the third limiting column.

3. The stator assembly of claim 2, wherein, The mounting part is a connecting plate, the first soldering part and the second soldering part are connected to two ends of the connecting plate, the terminal seat is provided with a mounting groove, and the connecting plate is interference-fitted with the mounting groove.

4. The stator assembly of claim 3, wherein, ​ 5. The stator assembly of claim 1, wherein, ​ 6. The stator assembly of claim 1, wherein, ​ 7. The stator assembly of claim 1, wherein, The stator assembly further comprises a protective shell made of insulating material, which is connected with the terminal seat and covers the terminal.

8. The stator assembly of claim 7, wherein, The terminal seat is provided with a buckle and a positioning boss, the protective shell is provided with a clamping hole and a positioning hole, the clamping hole is clamped with the buckle, and the positioning hole is positioned with the positioning boss.

9. The stator assembly of claim 7, wherein, The protective shell comprises a side plate, an inner wall of the side plate is provided with a fourth limiting groove, one end of the second welding wire part towards the side plate is provided with a limiting convex part, and the limiting convex part is positioned with the fourth limiting groove.

10. An electric machine characterized by The stator assembly comprises the stator assembly according to any one of claims 1 to 9.

11. A washing apparatus characterized by The motor comprises the motor according to claim 10.

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