Stator assembly, motor and household appliance

Abstract

The utility model discloses a stator assembly, a motor and a household electrical appliance, the stator assembly comprises a body, the body is provided with a wire harness lead-out part, the wire harness lead-out part comprises a plurality of lead bosses, and a wire outlet groove is limited between two adjacent lead bosses; the end cover is arranged on the body, the end cover is provided with a matching part, the matching part is suitable for being matched with the wire harness leading-out part, the lead boss comprises a first convex part and a second convex part, the first convex part is located on one side, in the extending direction of the wire outlet groove, of the second convex part, and the height sizes of the first convex part and the second convex part in the depth direction of the wire outlet groove are different. According to the stator assembly provided by the embodiment of the utility model, the first convex part and the second convex part which are different in height are arranged on the wire harness leading-out part, so that the sealing effect of the wire harness leading-out part can be improved, and the fixing effect on the wire harness can be improved, and therefore, the safe operation of a motor can be ensured, and the reliability and the stability of the operation of the motor can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a stator assembly, a motor and a household appliance. Background Art

[0002] The three-phase wires of the motor stator need to be led out through power wires and connected to an external drive electronic control board. In the related art, the motor stator is generally provided with lead-out wire grooves for the power wires to pass through. However, foreign objects can easily enter the stator through the lead-out wire grooves, and the part of the power wire at the lead-out wire groove is prone to looseness, so that when the motor is subjected to external force, the part of the power wire inside the motor stator is easily pulled, resulting in the motor being difficult to operate normally, and there is room for improvement. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a stator assembly, in which the wire harness lead-out part has strong sealing performance and good fixing effect on the wire harness, and the reliability and stability of the motor operation can be improved.

[0004] The utility model also provides a motor.

[0005] The utility model also provides a household appliance.

[0006] The stator assembly according to the first aspect embodiment of the utility model includes: a body, the body is provided with a wire harness lead-out part, the wire harness lead-out part includes a plurality of lead-out bosses, and an outlet groove is defined between two adjacent lead-out bosses; an end cover, the end cover is arranged on the body, and the end cover has a matching part, the matching part is adapted to cooperate with the wire harness lead-out part, wherein, the lead-out boss includes a first convex part and a second convex part, the first convex part is located on one side of the second convex part in the extending direction of the outlet groove, and the height dimensions of the first convex part and the second convex part in the depth direction of the outlet groove are different.

[0007] According to the stator assembly of the embodiment of the utility model, by arranging the first convex part and the second convex part with different heights on the wire harness lead-out part, the path for foreign objects to enter the stator assembly through the wire harness lead-out part can be extended, the probability of foreign objects entering the stator assembly can be reduced, the sealing effect of the wire harness lead-out part can be improved, and the contact area between the wire harness and the lead-out boss can be increased, ensuring the friction force of the wire harness at the outlet groove, reducing the probability of the wire harness loosening at the outlet groove, and improving the fixing effect on the wire harness.

[0008] Furthermore, it is possible to prevent the part of the wire harness inside the stator assembly from being pulled, reduce the probability of wire harness breakage, and at the same time prevent the part of the wire harness outside the stator assembly from colliding with the rotating body (such as the rotor or the rotating shaft, etc.), reduce the probability of abnormal noise occurring during the operation of the motor, and ensure the safe operation of the motor, thereby improving the reliability and stability of the motor operation.

[0009] According to some embodiments of the present invention, the fitting portion has a plurality of fitting bosses, and the fitting bosses include a plurality corresponding to the lead bosses. Each of the fitting bosses is matched with the shape of the lead boss so that the fitting boss is in abutting fit with the lead boss.

[0010] According to some embodiments of the present invention, the fitting portion has a fitting boss, and one side of the fitting boss close to the wire harness lead-out portion has a step adapted to be correspondingly fitted with the lead boss.

[0011] According to some embodiments of the present invention, the bottom of the wire outlet groove includes a flat section and at least one inclined section, and one of the inclined sections is located on the side of the flat section close to the center of the body.

[0012] In some examples, the body is further provided with a support boss, the support boss is adjacent to the wire harness outlet portion and is arranged at an interval from the lead boss, and in the depth direction of the wire outlet groove, the support boss is higher than the bottom of the wire outlet groove.

[0013] According to some embodiments of the present invention, the wire harness lead-out portion further includes two limiting bosses, and a plurality of the lead bosses are arranged between the two limiting bosses. In the depth direction of the wire outlet groove, the limiting bosses are higher than the lead bosses, and at least a part of the fitting portion is inserted between the two limiting bosses and is fitted with the lead bosses.

[0014] In some examples, the distance between the two limiting bosses is W1, and in the arrangement direction of the two limiting bosses, the width dimension of the fitting portion is W2, and W1≥W2.

[0015] According to some embodiments of the present invention, the first convex portion is located on the side of the second convex portion close to the center of the body and is arc-transitionally connected to the second convex portion. In the depth direction of the wire outlet groove, the height of the first convex portion is greater than the height of the second convex portion.

[0016] According to some embodiments of the present invention, the height of the first convex portion is h1, the height of the second convex portion is h2, and the wire diameter of the wire harness is φ. h1>h2, and 0.9φ≤h2≤1.5φ.

[0017] According to some embodiments of the present utility model, the height difference between the first convex portion and the second convex portion is Δh, and 0.5φ ≤ Δh ≤ 2φ.

[0018] The motor according to the second aspect embodiment of the present utility model includes the stator assembly according to the first aspect embodiment of the present utility model. By adopting the above-mentioned stator assembly, the probability of foreign objects entering the stator assembly can be reduced, the sealing effect of the wire harness lead-out portion can be improved, and the probability of the wire harness loosening at the wire outlet groove can be reduced, thereby improving the fixing effect on the wire harness, and thus the reliability and stability of the motor operation can be improved.

[0019] The household appliance according to the third aspect embodiment of the present utility model includes the motor according to the second aspect embodiment of the present utility model. By adopting the above-mentioned motor, the probability of foreign objects entering the stator assembly can be reduced, and the probability of the wire harness loosening can be reduced, thereby improving the reliability and stability of the household appliance operation.

[0020] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0022] Figure 1 is a schematic structural diagram of a stator assembly according to some embodiments of the present utility model;

[0023] Figure 2 is a schematic structural diagram of the body according to some embodiments of the present utility model from one perspective;

[0024] Figure 3 is Figure 2 an enlarged view of the A structure in;

[0025] Figure 4 is Figure 2 a sectional view of the structure shown;

[0026] Figure 5 is Figure 4 an enlarged view of the B structure in;

[0027] Figure 6 is a schematic structural diagram of the body according to some embodiments of the present utility model from another perspective;

[0028] Figure 7 is a schematic structural diagram of an end cover according to some embodiments of the present utility model.

[0029] Reference numerals:

[0030] Stator assembly 100, pin 101, wire harness 200,

[0031] Body 10, wire harness lead-out portion 11, lead boss 111, first convex portion 1111, second convex portion 1112, wire outlet groove 112, flat section 1121, inclined section 1122, limit boss 113, support boss 12,

[0032] End cover 20, mating portion 21, mating boss 211. Detailed implementation mode

[0033] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where 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 drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Next, refer to Figures 1-7 Describe the stator assembly 100 according to the embodiments of the present invention.

[0037] As Figures 1-7As shown in the figure, the stator assembly 100 according to an embodiment of the present utility model includes: a body 10 and an end cover 20. The body 10 may be provided with a wire harness lead-out portion 11. The wire harness lead-out portion 11 includes a plurality of lead-out bosses 111. An outlet groove 112 is defined between two adjacent lead-out bosses 111. Among them, three-phase wires are provided inside the body 10, and three-phase pins 101 are provided on the surface of the body 10. The three-phase wires are connected to the three-phase pins 101. A wire harness 200 is provided outside the body 10. The wire harness 200 can be connected to the three-phase pins 101, and the wire harness 200 can pass through the outlet groove 112, so that the three-phase wires can be led out through the wire harness 200, and the portion of the wire harness 200 outside the stator assembly 100 can be connected to the electronic control board, enabling the motor to operate normally.

[0038] The end cover 20 can be arranged on the body 10, and the end cover 20 has a mating portion 21. The mating portion 21 can cooperate with the wire harness lead-out portion 11 to fix the wire harness 200 and prevent the wire harness 200 from detaching from the wire harness lead-out portion 11. Among them, the lead-out boss 111 includes a first convex portion 1111 and a second convex portion 1112. The first convex portion 1111 is located on one side (such as the inner side as shown in the figure) of the second convex portion 1112 in the extending direction of the outlet groove 112 (such as the inner-outer direction as shown in the figure), and the height dimensions of the first convex portion 1111 and the second convex portion 1112 are different in the depth direction of the outlet groove 112 (such as the up-down direction as shown in the figure). Figure 5 As shown in the figure Figure 5 As shown in the figure Figure 5 in the up-down direction).

[0039] Thus, the contact surface between the mating portion 21 and the wire harness lead-out portion 11 can be bent. Therefore, when the mating portion 21 and the wire harness lead-out portion 11 are mated, the contact area between the mating portion 21 and the wire harness lead-out portion 11 in the extending direction of the outlet groove 112 can be increased, the path for foreign objects (such as water or dust, etc.) to enter the stator assembly 100 through the wire harness lead-out portion 11 can be extended, the probability of foreign objects entering the stator assembly 100 can be reduced, and the sealing effect of the wire harness lead-out portion 11 can be improved.

[0040] At the same time, at least a part of the wire harness lead-out portion 11 can be heightened, that is, the height of at least a part of the lead-out boss 111 is increased, the contact area between the wire harness 200 and the lead-out boss 111 can be increased, thereby the probability of the wire harness 200 contacting the lead-out boss 111 when the stator assembly 100 is subjected to an external force can be increased, the friction force of the wire harness 200 at the outlet groove 112 can be ensured, the probability of the wire harness 200 loosening at the outlet groove 112 can be reduced, and the fixing effect on the wire harness 200 can be improved.

[0041] According to the stator assembly 100 of the embodiment of the present utility model, by providing a first convex portion 1111 and a second convex portion 1112 with different heights on the wire harness lead-out portion 11, the path for foreign objects to enter the stator assembly 100 through the wire harness lead-out portion 11 can be extended, the probability of foreign objects entering the stator assembly 100 can be reduced, the sealing effect of the wire harness lead-out portion 11 can be improved, and the contact area between the wire harness 200 and the lead-out boss 111 can be increased, ensuring the friction force of the wire harness 200 at the wire outlet groove 112, reducing the probability of the wire harness 200 loosening at the wire outlet groove 112, and improving the fixing effect on the wire harness 200.

[0042] Furthermore, it can prevent the part of the wire harness 200 inside the stator assembly 100 from being pulled, reduce the probability of the wire harness 200 breaking, and at the same time prevent the part of the wire harness 200 outside the stator assembly 100 from colliding with a rotating body (such as a rotor or a rotating shaft, etc.), reduce the probability of abnormal noise occurring during the operation of the motor, and ensure the safe operation of the motor, thereby improving the reliability and stability of the motor operation.

[0043] As Figure 1 、 Figure 3 and Figure 7 shown, according to some embodiments of the present utility model, the mating portion 21 may have a plurality of mating bosses 211, the plurality of mating bosses 211 may correspond to the plurality of lead-out bosses 111 one by one, and the shape of each mating boss 211 matches the shape of the lead-out boss 111, so that the mating boss 211 and the lead-out boss 111 can be in butt joint and cooperation, realizing the fixation of the wire harness 200, preventing the wire harness 200 from detaching from the wire harness lead-out portion 11, and enabling the mating boss 211 and the lead-out boss 111 to be in full contact, which is beneficial to improving the sealing effect of the wire harness lead-out portion 11.

[0044] At the same time, by providing a plurality of mating bosses 211, a groove body may be defined between two adjacent mating bosses 211, and the groove body corresponds to the position of the wire outlet groove 112, which can increase the groove depth of the wire outlet groove 112, is beneficial to the wire harness 200 being in full contact with the wire outlet groove 112, and thus is beneficial to improving the mating effect between the wire harness 200 and the wire outlet groove 112 and improving the fixing effect on the wire harness 200.

[0045] According to some embodiments of the present utility model, the mating portion 21 may have a mating boss 211, and on the side of the mating boss 211 close to the wire harness lead-out portion 11 (such as Figure 1The lower side (as shown) has a step, which can be correspondingly matched with the lead boss 111. Among them, the step is a plane in the arrangement direction of the plurality of lead bosses 111. Thus, when the step contacts the lead bosses 111, the plurality of lead bosses 111 can respectively contact the step, and a part of the lead boss 111 corresponds to the position of the wire outlet groove 112. On the basis of realizing the fixation of the wire harness 200, the sealing of the wire harness lead-out part 11 can be realized, while being convenient for processing and conducive to cost saving.

[0046] As Figure 5 shown, according to some embodiments of the present invention, the bottom of the wire outlet groove 112 includes a flat section 1121 and at least one inclined section 1122. Among them, the number of the inclined sections 1122 can be one, and one inclined section 1122 is located on the side of the flat section 1121 close to the center of the body 10 (as Figure 5 shown on the inner side), which can make the wire harness 200 lap on the inclined section 1122 at the end of the wire outlet groove 112 (as Figure 5 shown on the inner end), which can reduce the bending degree of the wire harness 200, and can prevent the wire harness 200 from breaking due to bending, improve the service life of the wire harness 200, and improve the reliability of the motor operation.

[0047] Or, the number of the inclined sections 1122 can be two, and the two inclined sections 1122 can be respectively located on both sides of the flat section 1121 in the extending direction of the wire outlet groove 112 (as Figure 5 shown in the inner-outer direction) (as Figure 5 shown on the inner and outer sides). On the basis of realizing the fixation of the wire harness 200, the bending degree of the wire harness 200 can be reduced, the service life of the wire harness 200 can be improved, and the reliability of the motor operation can be improved.

[0048] As Figure 2 and Figure 4 shown, in some examples, the body 10 can also be provided with a support boss 12. The position of the support boss 12 is adjacent to the wire outlet part of the wire harness 200, and the support boss 12 and the lead boss 111 are arranged at intervals. In the depth direction of the wire outlet groove 112 (as Figure 4 shown in the up-down direction), the support boss 12 is higher than the bottom of the wire outlet groove 112, and the wire harness 200 can pass above the support boss 12 (as Figure 4 shown on the upper side) and lap on the support boss 12.

[0049] On the one hand, the height of the wire harness 200 at the support boss 12 can be increased, which is beneficial to increasing the height of the wire harness 200 at the end of the wire outlet groove 112 (as Figure 5At the height at the inner end shown, the degree of bending of the wire harness 200 can be reduced, the service life of the wire harness 200 can be extended, the reliability of the motor operation can be improved. On the other hand, when the end cover 20 is installed on the body 10, the end cover 20 can cooperate with the support boss 12 to clamp the wire harness 200, which can improve the fixing effect on the wire harness 200 and prevent the wire harness 200 from loosening when the stator assembly 100 is subjected to external forces.

[0050] As Figure 1 , Figure 2 and Figure 3 shown, according to some embodiments of the present invention, the wire harness lead-out portion 11 further includes two limiting bosses 113. A plurality of lead bosses 111 can be arranged between the two limiting bosses 113. At least a part of the mating portion 21 can be inserted between the two limiting bosses 113, and the mating portion 21 can cooperate with the lead bosses 111. On the basis of realizing the limitation of the wire harness 200, the sealing of the wire harness lead-out portion 11 can be realized.

[0051] And in the depth direction of the wire outlet groove 112 (such as Figure 3 the up-and-down direction shown), the limiting bosses 113 are higher than the lead bosses 111, which is convenient for the mating portion 21 to cooperate with the limiting bosses 113, and can increase the contact area between the limiting bosses 113 and the mating portion 21, that is, increase the contact area between the wire harness lead-out portion 11 and the mating portion 21, which is beneficial to improving the sealing effect on the wire harness lead-out portion 11.

[0052] It can be understood that after the end cover 20 is installed on the body 10, the upper surface (such as Figure 1 the upper surface shown) of the mating portion 21 of the end cover 20 can be flush with the upper surface (such as Figure 1 the upper surface shown) of the limiting bosses 113, which can make the wire harness 200 completely fill the wire outlet groove 112, and at the same time is beneficial to reducing the gap between the end cover 20 and the limiting bosses 113, thereby being beneficial to improving the sealing effect on the wire harness lead-out portion 11.

[0053] As Figure 1 , Figure 6 and Figure 7 shown, in some examples, the distance between the two limiting bosses 113 is W1, and in the arrangement direction of the two limiting bosses 113, the width dimension of the mating portion 21 is W2, wherein W1≥W2, that is, there can be a gap between the limiting bosses 113 and the mating portion 21, which is convenient for the wire harness lead-out portion 11 to be inserted and mated with the mating portion 21, so that on the basis of realizing the sealing of the wire harness lead-out portion 11 and the fixing of the wire harness 200, the installation of the end cover 20 is convenient and the operation is convenient.

[0054] As Figure 5As shown, according to some embodiments of the present utility model, the first convex portion 1111 is located on the side of the second convex portion 1112 closer to the center of the body 10 (such as Figure 5 shown on the inner side), in the depth direction of the wire outlet groove 112 (such as Figure 5 shown in the up and down direction), the height of the first convex portion 1111 is greater than the height of the second convex portion 1112, and the first convex portion 1111 can be arc-transitionally connected to the second convex portion 1112, which is convenient for injection molding.

[0055] Thus, when the mating portion 21 and the wire harness lead-out portion 11 are mated, the contact area between the mating portion 21 and the wire harness lead-out portion 11 in the extending direction of the wire outlet groove 112 (such as Figure 5 shown in the inner and outer direction) can be increased, and the path for foreign objects (such as water or dust, etc.) to enter the stator assembly 100 through the wire harness lead-out portion 11 can be extended, reducing the probability of foreign objects entering the stator assembly 100, and the sealing effect of the wire harness lead-out portion 11 can be improved.

[0056] As Figure 6 shown, according to some embodiments of the present utility model, the height of the first convex portion 1111 is h1, the height of the second convex portion 1112 is h2, the wire diameter of the wire harness 200 is φ, h1 > h2. Among them, if h2 is too small, the groove depth of the lead wire groove will be reduced, resulting in a smaller contact area between the wire harness 200 and the lead wire boss 111, affecting the fixing effect on the wire harness 200. If h2 is too large, the height difference between the first convex portion 1111 and the second convex portion 1112 will be reduced, resulting in a shorter path for foreign objects to enter the stator assembly 100 through the wire harness lead-out portion 11, affecting the sealing effect of the wire harness lead-out portion 11.

[0057] Thus, h2 can be limited to be between 0.9φ - 1.5φ. h2 can be any one of the point values of 0.9φ, φ, 1.1φ, 1.2φ, 1.3φ, 1.4φ, 1.5φ or the range value between any two of them, which can increase the contact area between the wire harness 200 and the lead wire boss 111, improve the fixing effect on the wire harness 200, and can extend the path for foreign objects to enter the stator assembly 100 through the wire harness lead-out portion 11, improving the sealing effect of the wire harness lead-out portion 11.

[0058] As Figure 6As shown, according to some embodiments of the present utility model, the height difference between the first convex portion 1111 and the second convex portion 1112 is Δh. If Δh is too small, the height difference between the first convex portion 1111 and the second convex portion 1112 will be reduced, resulting in a shorter path for foreign objects to enter the stator assembly 100 through the wire harness lead-out portion 11, affecting the sealing effect of the wire harness lead-out portion 11. If Δh is too large, the groove depth of a part of the lead wire groove will be reduced, resulting in a smaller contact area between the wire harness 200 and the lead wire boss 111, affecting the fixing effect of the wire harness 200.

[0059] Therefore, Δh can be limited to between 0.5φ and 2φ. Δh can be any one of the point values of 0.5φ, 0.8φ, 1.1φ, 1.4φ, 1.7φ, 2φ or the range value between any two of them. It can increase the contact area between the wire harness 200 and the lead wire boss 111, improve the fixing effect of the wire harness 200, and can extend the path for foreign objects to enter the stator assembly 100 through the wire harness lead-out portion 11, improving the sealing effect of the wire harness lead-out portion 11.

[0060] The motor according to the embodiment of the present utility model includes a stator assembly 100. By adopting the above stator assembly 100, the probability of foreign objects entering the stator assembly 100 can be reduced, the sealing effect of the wire harness lead-out portion 11 can be improved, and the probability of the wire harness 200 loosening at the wire outlet groove 112 can be reduced, improving the fixing effect of the wire harness 200, thereby improving the reliability and stability of the motor operation.

[0061] The household appliance according to the embodiment of the present utility model includes a motor. By adopting the above motor, the probability of foreign objects entering the stator assembly 100 can be reduced, and the probability of the wire harness 200 loosening can be reduced, improving the reliability and stability of the household appliance operation.

[0062] In this application, the household appliance can be a refrigerator, a freezer, an air conditioner, etc.; of course, the motor of the present application can also be applied to vehicles, aircrafts, computers, energy storage cabinets, etc.

[0063] The other constitutions and operations of the motor according to the embodiment of the present utility model are known to those of ordinary skill in the art and will not be described in detail here. In the description of the present utility model, the "first feature" and the "second feature" can include one or more of such features. Among them, the up-down direction, left-right direction, and front-back direction are based on the up-down direction, left-right direction, and front-back direction shown in the figure.

[0064] In the description of the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may also include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature.

[0065] In the description of this specification, the description of reference terms such as "an embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0066] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A stator assembly, characterized in that: include: A body, wherein the body is provided with a wire harness lead-out portion, the wire harness lead-out portion comprises a plurality of lead-wire bosses, and a wire outlet groove is defined between two adjacent lead-wire bosses; An end cover, the end cover is arranged on the body, and the end cover has a matching portion, and the matching portion is suitable for matching with the wire harness lead-out portion, The lead boss includes a first convex portion and a second convex portion, the first convex portion is located on one side of the second convex portion in the extension direction of the wire outlet groove, and the first convex portion and the second convex portion have different height dimensions in the depth direction of the wire outlet groove.

2. The stator assembly according to claim 1, characterized in that: The mating portion has a plurality of mating bosses, and the mating bosses include a plurality of bosses corresponding to the lead bosses, and each mating boss matches the shape of the lead boss, so that the mating bosses are in abutment with each other.

3. The stator assembly according to claim 1, characterized in that: The matching portion has a matching boss, and a side of the matching boss close to the wire harness lead-out portion has a step suitable for correspondingly matching with the lead-in boss.

4. The stator assembly according to claim 1, characterized in that: The bottom of the cable outlet groove comprises a plane section and at least one inclined section, and one inclined section is located on one side of the plane section close to the center of the body.

5. The stator assembly according to claim 4, characterized in that: The main body is further provided with a supporting boss, which is adjacent to the wire harness outlet portion and spaced apart from the lead boss. In the depth direction of the wire outlet groove, the supporting boss is higher than the groove bottom of the wire outlet groove.

6. The stator assembly according to claim 1, characterized in that: The wiring harness lead-out portion also includes two limiting bosses, a plurality of lead bosses are arranged between the two limiting bosses, and in the depth direction of the wire outlet groove, the limiting boss is higher than the lead boss, and at least a portion of the mating portion is inserted between the two limiting bosses and mated with the lead boss.

7. The stator assembly according to claim 6, characterized in that: The distance between the two limiting bosses is W1, and in the arrangement direction of the two limiting bosses, the width dimension of the matching portion is W2, W1≥W2.

8. The stator assembly according to claim 1, characterized in that: The first protrusion is located on one side of the second protrusion close to the center of the body and is transitionally connected to the second protrusion in an arc shape. In the depth direction of the wire outlet groove, the height of the first protrusion is greater than the height of the second protrusion.

9. The stator assembly according to claim 1, characterized in that: The height of the first convex portion is h1, the height of the second convex portion is h2, the wire diameter of the wire harness is φ, h1>h2, 0.9φ≤h2≤1.5φ.

10. The stator assembly according to any one of claims 1 to 9, characterized in that: A height difference between the first convex portion and the second convex portion is Δh, and 0.5φ≤Δh≤2φ.

11. A motor, characterized in that: The invention comprises a stator assembly as claimed in any one of claims 1 to 10.

12. A household appliance, characterized in that: Includes the motor as claimed in claim 11.

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