Stator housing structure, stator assembly, motor and household appliances

Abstract

This utility model discloses a stator housing structure, a stator assembly, a motor, and a household appliance, relating to the field of household appliance technology. The stator housing structure includes a stator housing and a wire clamp. The stator housing has a receiving cavity with at least one open end. The edge of the opening has a wire outlet notch for the wire to exit from the receiving cavity. The bottom wall of the wire outlet notch has a first groove. The wire clamp has a second groove that matches the first groove. The wire clamp is inserted into the wire outlet notch along the axial direction of the stator housing. The first groove and the second groove together form a wire outlet for the wire to pass through. The wire outlet is press-fitted tightly with the wire. The technical solution provided by this utility model can improve the reliability of the motor under high humidity, pollution, and complex operating conditions.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a stator housing structure, a stator assembly, a motor, and a household appliance. Background Technology

[0002] In existing technologies, power lines and other wires that are electrically connected to the stator need to be led out from inside the stator housing. However, leading out the power lines and other wires often compromises the seal of the stator housing, affecting the reliability of the motor under high humidity, pollution, and complex operating conditions. Utility Model Content

[0003] The main purpose of this utility model is to propose a stator housing structure, stator assembly, motor, and household appliance, aiming to improve the reliability of motor operation under high humidity, pollution, and complex working conditions.

[0004] To achieve the above objectives, the stator shell structure proposed in this utility model includes:

[0005] A stator housing has an internal cavity with at least one open end. The edge of the opening has a wire exit notch for a wire to be led out from the cavity. The bottom wall of the wire exit notch has a first groove.

[0006] A wire clamp is provided with a second groove that matches the first groove. The wire clamp is inserted into the wire outlet notch along the axial direction of the stator housing. The first groove and the second groove together form an outlet for the wire to pass through. The outlet is pressed tightly against the wire with an interference fit.

[0007] In one embodiment, the stator housing and the conductor clamp are made of different materials.

[0008] In one embodiment, the stator housing is made of thermosetting plastic;

[0009] The wire clamp is made of thermoplastic plastic.

[0010] In one embodiment, the bottom wall of the wire outlet notch is provided with a plurality of first grooves, each first groove being used for a wire to pass through, and the wire clamp is provided with a plurality of second grooves corresponding to the first grooves.

[0011] In one embodiment, a limiting step is provided at the bottom of the first groove on one side of the stator housing along the radial direction, and the second groove has a wire pressing protrusion protruding toward the limiting step. The wire pressing protrusion is inserted into the first groove and presses the wire against the limiting step.

[0012] In one embodiment, the lead-out notch is interference-fitted with the conductor clamp.

[0013] In one embodiment, the wire outlet notch has two opposing sidewalls, at least one of which is inclined relative to the axial direction of the stator housing, and the wire outlet notch gradually widens in the direction close to its opening, and the wire clamp is adapted to the wire outlet notch.

[0014] In one embodiment, the angle between the sidewall and the axial direction of the stator housing is α, where 0° ≤ α < 45°.

[0015] In one embodiment, the wire clamp includes a main body, a first guide portion and a second guide portion disposed on opposite sides of the main body along the radial direction of the stator housing, the main body being inserted into the wire outlet notch along the axial direction of the stator housing, and a second groove being disposed at least in the main body, the first guide portion and the second guide portion jointly guiding the main body to be inserted into the wire outlet notch, and being able to jointly clamp the main body on the inner and outer sides of the stator housing.

[0016] In one embodiment, the first guide portion includes a first connecting segment connected to the main body portion and a first guide segment connected to the first connecting segment, the first connecting segment extending circumferentially along the stator housing and the first guide segment extending radially along the stator housing.

[0017] The second guide portion includes a second connecting section connected to the main body portion and a second guide section connected to the second connecting section. The second connecting section extends circumferentially along the stator housing, and the second guide section extends radially along the stator housing.

[0018] In one embodiment, the first guide segment and the second guide segment are staggered in the circumferential direction of the stator housing.

[0019] In one embodiment, the first guide portion is disposed on the outer side of the stator housing, and the second guide portion is disposed on the inner side of the stator housing;

[0020] The outer side of the stator housing is provided with a clearance groove to avoid the first guide portion;

[0021] The stator housing has a limiting protrusion on its inner side, which limits the second guide portion.

[0022] In one embodiment, the depth of the first groove along the radial direction of the stator housing is greater than the thickness of the stator housing at the adjacent location.

[0023] In one embodiment, the stator housing structure further includes an end cap and a sealing ring, the sealing ring being disposed around the periphery of the opening, the end cap covering the opening and pressing the wire clamp into the wire outlet notch.

[0024] This utility model also proposes a stator assembly, including the stator shell structure as described above.

[0025] This utility model also proposes an electric motor, including the stator assembly as described above.

[0026] This utility model also proposes a household appliance, including the motor described above.

[0027] The technical solution of this utility model involves providing a receiving cavity with at least one open end inside the stator housing. The edge of the opening has a wire outlet notch for the wire to exit from the receiving cavity. The bottom wall of the wire outlet notch has a first groove. A wire clamp has a second groove that matches the first groove. The wire clamp is inserted into the wire outlet notch along the axial direction of the stator housing. The first and second grooves together form an outlet for the wire to pass through. That is, when the wire clamp is engaged in the outlet notch, the second groove blocks the opening of the first groove, thus forming a circumferentially sealed outlet. This also presses the wire tightly against the first groove, ensuring a sealing effect, preventing the wire from coming out of the notch, and limiting the wire's swing, reducing the possibility of accidental wire movement leading to electrical connection failure. Furthermore, the interference fit between the outlet and the wire in this solution ensures the sealing of the stator housing at the outlet, maintaining the stator housing's sealing level and improving the reliability of the motor under high humidity, pollution, and complex operating conditions. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0029] Figure 1 A schematic diagram of an embodiment of the stator shell structure provided by this utility model;

[0030] Figure 2 for Figure 1 Exploded view of the middle stator shell structure at a certain angle;

[0031] Figure 3 for Figure 1 Exploded view of the middle stator shell structure from another angle;

[0032] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0033] Figure 5 for Figure 1 Exploded view of the middle stator shell structure from another angle;

[0034] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0035] Figure 7 for Figure 1 A schematic diagram of the structure of the middle stator shell at one angle;

[0036] Figure 8 for Figure 1 Another structural diagram of the middle stator shell;

[0037] Figure 9 for Figure 8 A magnified view of a section at point C;

[0038] Figure 10 for Figure 1 A schematic diagram of the angle structure of the center conductor clamp;

[0039] Figure 11 for Figure 1 Another angle structural diagram of the center conductor clamp;

[0040] Figure 12 for Figure 1 Another angular structural diagram of the center conductor clamp.

[0041] Explanation of icon numbers:

[0042] 1. Stator shell structure;

[0043] 11. Stator housing; 1101. Stepped end face; 1102. Circumferential surface; 1103. Radial surface;

[0044] 111. Receiving cavity; 112. Opening; 113. Cable outlet notch; 1131. Side wall; 1132. Bottom wall; 114. Cable outlet; 115. First groove; 1151. Limiting step; 116. Extension; 117. Avoidance step; 118. Avoidance groove; 119. Limiting protrusion;

[0045] 12. Wire clamp; 121. Main body; 122. First guide section; 1221. First connecting section; 1222. First guide section; 123. Second guide section; 1231. Second connecting section; 1232. Second guide section; 124. Wire clamping protrusion; 125. Second groove;

[0046] 13. End cap; 14. Sealing ring; 2. Wire.

[0047] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0048] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0049] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0050] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0051] This utility model proposes a stator shell structure 1.

[0052] Please see Figure 1 , Figure 2 , Figure 7 , Figure 10 and Figure 11 In one embodiment of this utility model, the stator shell structure 1 includes:

[0053] The stator housing 11 has an internal cavity 111 with at least one end open 112. The edge of the opening 112 has a wire outlet notch 113 for the wires 2 inside the cavity 111 to exit. The bottom wall of the wire outlet notch 113 has a first groove 115.

[0054] The wire clamp 12 has a second groove 125 that matches the first groove 115. The wire clamp 12 is inserted into the wire outlet notch 113 along the axial direction of the stator housing 11. The first groove 115 and the second groove 125 together form a wire outlet 114 for the wire 2 to pass through. The wire outlet 114 is press-fitted with the wire 2.

[0055] In this design, the stator housing 11 has a receiving cavity 111 with at least one end opening 112, and the receiving cavity 111 is generally cylindrical. The rotor assembly can extend into the receiving cavity 111 through the opening 112. When working, the rotor assembly rotates in the receiving cavity 111 and outputs mechanical energy outward. In one embodiment, a stepped end face 1101 is provided at the opening 112 end of the stator housing 11. The stepped end face 1101 includes a circumferential surface 1102 extending circumferentially along the stator housing 11 and a radial surface 1103 extending radially along the stator housing 11. The circumferential surface 1102 surrounds the outer periphery of the radial surface 1103. The stator winding can be arranged on the side of the radial surface 1103 opposite to the opening 112. Power lines and other wires 2 electrically connected to the stator winding can be led out through the radial surface 1103. In order to facilitate wiring and the lead-out of the wire 2, a terminal can be provided on the side of the radial surface 1103 near the circumferential surface 1102. The terminal is electrically connected to the stator winding, and the wire 2 is quick-connected to the terminal, thereby facilitating the lead-out of the wire 2 from the stator housing structure 1. Of course, in other embodiments, the stepped end face 1101 may not be provided, and the wire 2 may be led out directly. In other embodiments, the stator housing 11 may also have openings 112 at both ends of the receiving cavity 111.

[0056] The wire outlet 113 is located at the edge of the opening 112 of the receiving cavity 111, that is, on the circumferential surface 1102 of the stator housing 11. The bottom wall of the wire outlet 113 has a first groove 115. The wire 2 is led out from the wire outlet 113 and inserted into the first groove 115. The wire clamp 12 is inserted into the wire outlet 113 along the axial direction of the stator housing 11. Its second groove 125 and the first groove 115 together form a wire outlet 114 for the wire 2 to pass through. When the wire clamp 12 engages with the outlet notch 113, the second groove 125 blocks the opening 112 of the first groove 115, thereby forming a circumferentially sealed outlet 114 with the first groove 115. This also presses the wire 2 firmly against the first groove 115, ensuring a tight seal and preventing the wire 2 from slipping out of the outlet notch 113. Furthermore, it restricts the wire 2 from swinging, reducing the possibility of accidental movement that could lead to electrical connection failure. In this design, the outlet 114 is press-fitted with the wire 2, ensuring the seal of the stator housing 11 at the outlet 114, maintaining the sealing level of the stator housing 11, and improving the reliability of the motor under high humidity, pollution, and complex operating conditions.

[0057] Furthermore, in actual installation, this solution allows for several approaches: first, the wire 2 can be electrically connected to the external circuit, and then the wire 2 can be directly pulled into the outlet notch 113 through the notch, followed by inserting the wire clamp 12 into the outlet notch 113; alternatively, the wire 2 can be placed in the outlet notch 113 before connecting it to the external circuit, and then the wire clamp 12 can be inserted into the outlet notch 113. This eliminates the need for the wire 2 to be inserted axially (radially towards the stator housing 11) along the outlet 114, facilitating its exit and enabling flexible installation. On the other hand, due to the change in assembly method, this solution allows the shape of the outlet 114 to better match the shape of the wire 2, enabling the outlet 114 to press firmly against the wire 2, further ensuring the sealing performance of the outlet 114 and thus guaranteeing the sealing rating of the stator housing 11.

[0058] In one embodiment, the stator housing 11 and the wire clamp 12 are made of different materials. Thermosetting plastics are often used as the material for stator housing 11 because they have high insulation properties, can withstand high voltage during stator winding operation, effectively avoiding leakage or breakdown risks, and possess superior heat resistance, electromagnetic compatibility (avoiding eddy current losses and improving motor efficiency), lightweight, and high mechanical strength. Optionally, the stator housing 11 is made of DMC (Dough Molding Compound) or BMC (Bulk Molding Compound), and it is typically injection molded.

[0059] The wire clamp 12 has a relatively small overall size and requires precise dimensions (to meet waterproofing requirements). However, DMC material contains a large amount of glass fiber (30%–50%) and inorganic fillers (such as calcium carbonate), resulting in high melt viscosity and poor fluidity. This makes it difficult to fill complex molds and fine structures, easily leading to material shortages or flash. Furthermore, its high and uneven shrinkage rate can cause warping, deformation, or internal cracks, and the concentrated thermal stress results in poor dimensional stability. If DMC material is used for the wire clamp 12, material shortages, breakage, or deformation are likely to occur, leading to a low yield. To overcome this deficiency, the wire clamp 12 can be made of thermoplastic plastic with better fluidity and lower shrinkage to meet manufacturing requirements, improve the yield, and the thermoplastic plastic also has good insulation properties to reduce the possibility of leakage due to cracking of the outer sheath of the wire 2.

[0060] Optionally, the wire clamp 12 may be made of materials such as PBT (Polybutylene Terephthalate) or PA66 (Polyhexamethylene Adipamide). Since both PBT and PA66 are rigid plastics, this effectively ensures the wire clamp 12 is firmly pressed against the wire outlet notch 113, reducing the possibility of the wire 2 deforming and dislodging from the wire outlet notch 113 during axial movement. It also effectively ensures that the wire outlet 114 does not lose stability due to deformation of the wire clamp 12, and helps reduce the production cost of the wire clamp 12. The wire clamp 12 can also be injection molded. In other embodiments, the stator housing 11 and the wire clamp 12 may be made of the same material.

[0061] In this embodiment, the wire outlet notch 113 is interference-fitted with the main body 121, so that the wire outlet notch 113 can be locked with the main body 121, thereby ensuring the sealing effect between the main body 121 and the wire outlet notch 113, and also making it easy for the main body 121 to be locked into the wire outlet notch 113.

[0062] To further improve the sealing effect of the stator housing 11, in this embodiment of the invention, the bottom wall 1132 of the wire outlet 113 is provided with a plurality of first grooves 115, each first groove 115 for a single wire 2 to pass through, and the wire clamp 12 is provided with a plurality of second grooves 125 corresponding to the first grooves 115. Specifically, by opening the first grooves 115 on the bottom wall 1132, and ensuring that the number of first grooves 115 matches the number of wires 2, a single wire 2 is inserted into a corresponding first groove 115, thus ensuring that only one wire 2 is provided in each wire outlet 114. This avoids the presence of multiple wires 2 in each wire outlet 114, preventing gaps from forming between multiple wires 2 within the wire outlet 114, which could allow water to seep into the stator housing 11 through these gaps and affect the sealing of the stator housing structure 1. Furthermore, since only one wire 2 is provided in each outlet 114, it can better ensure that the outlet 114 and the wire 2 are compatible, thereby pressing the outlet 114 along the circumference of the wire 2 and improving the sealing performance.

[0063] For further details, please refer to Figures 3 to 6 , Figure 8 and Figure 9The bottom of the first groove 115 is provided with a limiting step 1151 along the radial side of the stator housing 11. The second groove 125 has a wire pressing protrusion 124 protruding towards the limiting step 1151. The wire pressing protrusion 124 is inserted into the first groove 115 and presses the wire 2 against the limiting step 1151. Specifically, the limiting step 1151 is provided on the bottom of the first groove 115 near the wire pressing protrusion 124, so that the bottom of the first groove 115 has two planes with different heights, corresponding to the bottom of the cable outlet 114 having two different planes. The pressure protrusion 124 protrudes towards the limiting step 1151 and is inserted into the first groove 115, so that the top of the outlet 114 also has two different planes. That is, the limiting step 1151 and the pressure protrusion 124 together divide the outlet 114 into two staggered and connected segments, and the two segments are arranged radially along the stator housing 11, so that the axial direction of the outlet 114 is a series of bent segments, thereby increasing the difficulty for external water to enter the outlet 114 and improving the sealing performance of the stator housing structure 1.

[0064] Furthermore, in this design, the limiting step 1151 is located at the bottom of the first groove 115, near the side of the pressure protrusion 124. The pressure protrusion 124 and the limiting step 1151 are located on the same side, meaning that the height of the outlet 114 outside the stator housing 11 is greater than the height of the outlet 114 inside the stator housing 11, thereby further increasing the difficulty for external water flow to enter the outlet 114. Of course, in other embodiments, the height of the outlet 114 outside the stator housing 11 can also be less than the height of the outlet 114 inside the stator housing 11, meaning that both the limiting step 1151 and the pressure protrusion 124 are located on the side of the outlet 114 near the outside of the stator housing 11.

[0065] See Figure 4 , Figure 6 and Figure 9 Since the pressure protrusion 124 needs to be inserted into the first groove 115, a clearance groove is provided at the top of the first groove 115 to facilitate the insertion of the pressure protrusion 124. That is, the height of the extension 116 is lower than the height of its adjacent position, thereby facilitating the insertion of the pressure protrusion 124. Correspondingly, the height of the bottom of the main body 121 facing the inside of the stator housing 11 is also lower than the height of the bottom of the main body 121 facing the outside of the stator housing 11. Thus, when the wire clamp 12 is inserted into the wire outlet notch 113, the bottom of the main body 121 facing the inside of the stator housing 11 overlaps with the top of the extension 116, and the bottom of the main body 121 facing the outside of the stator housing 11 overlaps with the side of the first groove 115 facing the outside of the stator housing 11.

[0066] The limiting step 1151 can be provided in multiple directions along the axial direction of the outlet 114 (radial direction of the stator housing 11), and multiple corresponding pressure protrusions 124 are also provided, thereby further increasing the bending position of the extension path of the first groove 115, thereby increasing the difficulty for external water to enter the outlet 114 and improving the sealing performance of the stator housing structure 1.

[0067] In the embodiments of this utility model, see Figure 7 The wire outlet notch 113 has two opposing sidewalls 1131, at least one of which is inclined relative to the axial direction of the stator housing 11. The wire outlet notch 113 gradually widens in the direction near the opening 112, and the wire clamp 12 is adapted to the wire outlet notch 113. Specifically, the two sidewalls 1131 are arranged opposite each other circumferentially to the stator housing 11. At least one of the two sidewalls 1131 is inclined relative to the axial direction of the stator housing 11, so that the wire outlet notch 113 gradually widens in the direction near the opening 112, thereby facilitating the insertion of the wire clamp 12. The wire clamp 12 is adapted to the wire outlet notch 113, that is, the sidewall 1131 of the wire clamp 12 is also inclined relative to the axial direction of the stator, so that the sidewall 1131 of the wire clamp 12 abuts against the sidewall 1131 of the wire outlet notch 113, thereby ensuring the sealing of the stator housing structure 1 and reducing the possibility of accidental leakage or seepage. Both sidewalls 1131 can be inclined, and in this case, both sidewalls 1131 of the wire clamp 12 are also inclined; or only one of the two sidewalls 1131 can be inclined, so that the corresponding one of the two sidewalls 1131 of the wire clamp 12 is also inclined.

[0068] Optionally, the angle between the sidewall 1131 and the axial direction of the stator housing 11 is α, where 0°≤α<45°. If the angle between the side wall 1131 and the axial direction of the stator housing 11 is greater than or equal to 45°, the inclination of the side wall 1131 is too large. When the wire clamp 12 is inserted into the wire outlet notch 113 and the side wall 1131 of the wire outlet notch 113 abuts against the side wall 1131 of the wire clamp 12, the clamping force of the side wall 1131 of the wire outlet notch 113 on the wire clamp 12 along the circumference of the stator housing 11 may be small, so that the main body 121 and the wire outlet notch 113 cannot be locked together, affecting the sealing of the stator housing structure 1. In order to adapt the main body 121 to the wire outlet notch 113, the side wall 1131 of the main body 121 is also inclined, and the angle between the side wall 1131 of the main body 121 and the axial direction of the stator housing 11 is also α, 0°≤α<45°. Optionally, the angle α between the sidewall 1131 and the stator housing 11 along the axial direction can be 0°, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, etc.

[0069] Please see Figure 2 , Figure 6 , Figures 10 to 12In an embodiment of this utility model, the wire clamp 12 includes a main body 121, a first guide part 122, and a second guide part 123. The first guide part 122 and the second guide part 123 are respectively disposed on opposite sides of the main body 121 along the radial direction of the stator housing 11. The main body 121 is inserted into the wire outlet notch 113 along the axial direction of the stator housing 11. The second groove part 125 is at least disposed in the main body 121. The first guide part 122 and the second guide part 123 together guide the main body 121 to insert into the wire outlet notch 113 and can be clamped together on the inner and outer sides of the stator housing 11.

[0070] Specifically, the first guide portion 122 and the second guide portion 123 are respectively disposed on opposite sides of the main body portion 121 along the radial direction of the stator housing 11, so that the first guide portion 122 and the second guide portion 123 together form a guide channel. When the main body portion 121 is inserted into the wire outlet notch 113, the stator housing 11 is inserted into the guide channel, thereby guiding the main body portion 121 into the wire outlet notch 113 and reducing the possibility of misalignment between the main body portion 121 and the wire outlet notch 113 along the radial direction of the stator housing 11. After the main body portion 121 is inserted into place, the first guide portion 122 and the second guide portion 123 together clamp the inner and outer sides of the stator housing 11, so that the first guide portion 122 and the second guide portion 123 can jointly limit the main body portion 121, thereby limiting the possibility of swinging between the main body portion 121 and the wire outlet notch 113 along the radial direction of the stator housing 11, so as to ensure the stable installation of the guide clamp.

[0071] The main body 121, the first guide portion 122, and the second guide portion 123 can be integrally formed, which facilitates the assembly of the wire clamp 12 and ensures the sealing of the stator shell structure 1. Of course, in other embodiments, the main body 121, the first guide portion 122, and the second guide portion 123 can also be formed separately, such as by splicing or bonding.

[0072] Please see Figures 10 to 12 In an embodiment of the present invention, the first guide portion 122 includes a first connecting section 1221 connected to the main body portion 121 and a first guide section 1222 connected to the first connecting section 1221. The first connecting section 1221 extends circumferentially along the stator housing 11, and the first guide section 1222 extends radially along the stator housing 11.

[0073] The second guide portion 123 includes a second connecting section 1231 connected to the main body portion 121 and a second guide section 1232 connected to the second connecting section 1231. The second connecting section 1231 extends circumferentially along the stator housing 11, and the second guide section 1232 extends radially along the stator housing 11.

[0074] Specifically, the first guide portion 122 includes a first connecting section 1221 connected to the main body portion 121. The first connecting section 1221 extends circumferentially along the stator housing 11, and the first guide section 1222 is connected to the first connecting section 1221, thereby guiding the first guide section 1222 to one side of the main body portion 121 in the circumferential direction, that is, one side of the wire outlet notch 113, thus avoiding the wire outlet 114 and facilitating the lead-out of the wire 2. The second guide portion 123 includes a second connecting section 1231 connected to the main body portion 121. The second connecting section 1231 extends circumferentially along the stator housing 11, and the second guide section 1232 is connected to the second connecting section 1231, thereby guiding the second guide section 1232 to one side of the main body portion 121 in the circumferential direction, that is, one side of the wire outlet notch 113, thus avoiding the wire outlet 114 and facilitating the lead-out of the wire 2. Furthermore, the first guide portion 122 and the second guide portion 123 are arranged at a distance along the radial direction of the stator housing 11, thereby jointly constructing a guide channel and extending the depth of the guide channel along the radial direction of the stator housing 11 to better guide the main body portion 121 to insert the wire outlet notch 113. Thus, the first guide portion 122 and the second guide portion 123 can both guide the main body portion 121 to insert the wire outlet notch 113 and avoid the wire outlet 114.

[0075] The first guide segment 1222 and the first connecting segment 1221 are integrally formed, which facilitates the assembly of the first guide portion 122 and improves the installation stability of the wire clamp 12 and the notch of the wire 2. Of course, in other embodiments, the first guide segment 1222 and the first connecting segment 1221 can also be formed separately. The second guide segment 1232 and the second connecting segment 1231 are integrally formed, which facilitates the assembly of the second guide portion 123 and improves the installation stability of the wire clamp 12 and the notch of the wire 2. Of course, in other embodiments, the second guide segment 1232 and the second connecting segment 1231 can also be formed separately.

[0076] Optionally, please refer to Figure 2 , Figures 10 to 12 In the circumferential direction of the stator housing 11, the first guide section 1222 and the second guide section 1232 are staggered. Specifically, the staggered arrangement of the first guide section 1222 and the second guide section 1232 helps to form a cross clamping force on the inner and outer sides of the stator housing 11. This asymmetrical clamping can better ensure the installation stability of the wire clamp 12. On the other hand, it can also reduce the problem of excessive friction when assembling the wire clamp 12 and the wire outlet notch 113 due to the relative arrangement of the first guide section 1222 and the second guide section 1232, thereby reducing the problem of jamming when assembling the wire clamp 12 and the wire outlet notch 113.

[0077] Please see Figure 1 and Figure 7 In an embodiment of this utility model, the first guide portion 122 is disposed on the outer side of the stator housing 11, the second guide portion 123 is disposed on the inner side of the stator housing 11, and the outer side of the stator housing 11 is provided with an avoidance groove 118 to avoid the first guide portion 122, thereby reducing the possibility of interference between the first guide portion 122 and the outer side of the stator housing 11.

[0078] Please see Figure 4 and Figure 6 In this embodiment of the present invention, the first guide portion 122 is disposed on the outer side of the stator housing 11, and the second guide portion 123 is disposed on the inner side of the stator housing 11. A limiting protrusion 119 is provided on the inner side of the stator housing 11, which limits the second guide portion 123. In this design, the limiting protrusion 119 is disposed adjacent to the wire outlet notch 113, so that the side edge of the limiting protrusion 119 and the extension portion 116 together form a portion of the first groove 115 to press the wire 2 along the circumference of the stator housing 11. Simultaneously, the limiting protrusion 119 can be engaged between the wire pressing protrusion 124 and the second guide portion 123, thereby limiting the second guide portion 123 and further ensuring the clamping of the wire clamp 12 to the stator housing 11.

[0079] In one embodiment, please refer to Figure 9 The depth of the first groove 115 along the radial direction of the stator housing 11 is greater than the thickness of the stator housing 11 adjacent to it. That is, an extension 116 is provided at least on the inner side of the bottom position of the wire outlet notch 113, thereby locally thickening the stator housing 11 to increase the radial depth of the first groove 115 along the stator housing 11. Since the wire outlet 114 is divided into multiple staggered and connected segments in this design, appropriately increasing the depth of the first groove 115 not only facilitates the fit between the wire 2 and the first groove 115, but also ensures the sealing effect at the wire outlet 114.

[0080] In the embodiments of this utility model, please refer to Figure 4 and Figure 6 The stator housing structure 1 also includes an end cap 13 and a sealing ring 14. The sealing ring 14 is located around the opening 112. The end cap 13 covers the opening 112 and presses the wire clamp 12 into the outlet notch 113. Specifically, when the wire clamp 12 is inserted into the outlet notch 113, the periphery of the opening 112 of the receiving cavity 111 is closed, and the wire clamp 12 and the stator housing 11 are flush with the end faces facing the opening 112. This facilitates the end cap 13 to cover the opening 112 and allows the end cap 13 to further press the wire clamp 12 into the outlet notch 113, thereby further reducing the possibility of the wire clamp 12 coming out of the outlet notch 113. In order to further ensure the sealing of the stator housing structure 1, the sealing ring 14 is located around the opening 112 and between the end cap 13 and the stator housing 11. The end cap 13 covers the opening 112 and presses the sealing ring 14 into the stator housing 11.

[0081] This utility model also proposes a stator assembly, which includes a stator shell structure 1. The specific structure of the stator shell structure 1 is as described in the above embodiments. Since this stator assembly adopts all the technical solutions of all 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 described in detail here.

[0082] This utility model also proposes an electric motor, which includes a stator assembly. The specific structure of the stator assembly is as described in the above embodiments. Since this electric motor adopts all the technical solutions of all 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 described in detail here.

[0083] The above are merely exemplary embodiments of this utility model and are not intended to limit the scope of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the protection scope of this utility model.

Claims

1. A stator housing structure characterized by comprising: include: A stator housing has an internal cavity with at least one open end. The edge of the opening has a wire exit notch for a wire to be led out from the cavity. The bottom wall of the wire exit notch has a first groove. A wire clamp is provided with a second groove that matches the first groove. The wire clamp is inserted into the wire outlet notch along the axial direction of the stator housing. The first groove and the second groove together form an outlet for the wire to pass through. The outlet is pressed tightly against the wire with an interference fit.

2. The stator housing structure of claim 1, wherein The stator housing and the conductor clamp are made of different materials.

3. The stator housing structure of claim 2, wherein The stator housing is made of thermosetting plastic; The wire clamp is made of thermoplastic plastic.

4. The stator housing structure of claim 1, wherein The bottom wall of the outlet notch is provided with a plurality of first grooves, each first groove being used for a wire to pass through, and the wire clamp is provided with a plurality of second grooves corresponding to the first grooves.

5. The stator housing structure of claim 1, wherein The bottom of the first groove is provided with a limiting step on one side of the stator housing along the radial direction. The second groove has a wire pressing protrusion protruding towards the limiting step. The wire pressing protrusion is inserted into the first groove and presses the wire against the limiting step.

6. The stator housing structure of claim 1, wherein The lead-out notch is interference-fitted with the conductor clamp.

7. The stator housing structure of claim 1, wherein The wire outlet notch has two opposing sidewalls, at least one of which is inclined relative to the axial direction of the stator housing, and the wire outlet notch gradually widens in the direction close to its opening, and the wire clamp is adapted to the wire outlet notch.

8. The stator housing structure of claim 7, wherein The angle between the sidewall and the axial direction of the stator housing is α, where 0°≤α<45°.

9. The stator housing structure of claim 1, wherein The wire clamp includes a main body, a first guide portion and a second guide portion disposed on opposite sides of the main body along the radial direction of the stator housing. The main body is inserted into the wire outlet notch along the axial direction of the stator housing. The second groove is at least disposed on the main body. The first guide portion and the second guide portion together guide the main body to be inserted into the wire outlet notch and can be clamped together on the inner and outer sides of the stator housing.

10. The stator housing structure of claim 9, wherein The first guide portion includes a first connecting segment connected to the main body portion and a first guide segment connected to the first connecting segment. The first connecting segment extends circumferentially along the stator housing, and the first guide segment extends radially along the stator housing. The second guide portion includes a second connecting section connected to the main body portion and a second guide section connected to the second connecting section. The second connecting section extends circumferentially along the stator housing, and the second guide section extends radially along the stator housing.

11. The stator housing structure of claim 10, wherein In the circumferential direction of the stator housing, the first guide segment and the second guide segment are staggered.

12. The stator housing structure of claim 9, wherein The first guide portion is located on the outer side of the stator housing, and the second guide portion is located on the inner side of the stator housing; The outer side of the stator housing is provided with a clearance groove to avoid the first guide portion; The stator housing has a limiting protrusion on its inner side, which limits the second guide portion.

13. The stator housing structure of claim 1, wherein The depth of the first groove along the radial direction of the stator housing is greater than the thickness of the stator housing at the adjacent position.

14. The stator shell structure of any one of claims 1 to 13, wherein, The stator housing structure also includes an end cap and a sealing ring. The sealing ring is located around the periphery of the opening. The end cap covers the opening and presses the wire into the outlet notch.

15. A stator assembly characterized by, Includes the stator shell structure as described in any one of claims 1 to 14.

16. An electric machine characterized by Includes the stator assembly as described in claim 15.

17. A household appliance, characterized in that, Including the motor as described in claim 16.

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