Motor and household appliance

Abstract

The utility model provides a motor and a household electrical appliance. The motor comprises a stator assembly; the end cover is installed at the end of the stator assembly, one of the end cover and the stator assembly is provided with a sealing groove, the other one of the end cover and the stator assembly is provided with a sealing boss, under the condition that the end cover is connected with the stator assembly, the sealing boss is arranged in the sealing groove, and at least one part of the sealing boss is matched with at least one part of the sealing groove in a sealing mode. The sealing boss and the sealing groove are arranged around the axis of the stator assembly. And the at least one connecting piece is used for connecting the end cover and the stator assembly so as to lock the end cover and the stator assembly. According to the motor provided by the utility model, the end cover and the stator assembly are hermetically connected through the matching of the sealing boss and the sealing groove, and the at least one connecting piece is connected with the end cover and the stator assembly, so that the end cover and the stator assembly can be locked, the reliability of the connection between the end cover and the stator assembly is improved, and the service life of the motor is prolonged. And the waterproof performance between the end cover and the stator assembly is improved.

Description

Technical Field

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

[0002] At present, as the application scenarios of products such as household appliances equipped with motors become more and more extensive, the diversity of motor application environments is also increasing.

[0003] In the related art, water may enter the motor when it is exposed to rain, which may easily cause the motor performance to deteriorate or even fail to work normally. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0005] To this end, a first aspect of the utility model provides a motor.

[0006] The second aspect of the utility model also provides a household appliance.

[0007] In view of this, the first aspect of the utility model proposes a motor, comprising: a stator assembly; an end cover, the end cover is installed at the end of the stator assembly, one of the end cover and the stator assembly is provided with a sealing groove, and the other is provided with a sealing boss, when the end cover is connected to the stator assembly, the sealing boss is arranged in the sealing groove, and at least a portion of the sealing boss is sealed with at least a portion of the sealing groove, wherein the sealing boss and the sealing groove are both arranged around the axis of the stator assembly; at least one connecting member, the connecting member is used to connect the end cover and the stator assembly to lock the end cover and the stator assembly.

[0008] The motor provided by the utility model comprises a stator assembly and an end cover, wherein the end cover can be installed at the end of the stator assembly, wherein one of the end cover and the stator assembly is provided with a sealing groove, and the other is provided with a sealing boss, so that the end cover and the stator assembly can achieve a sealed connection through the cooperation of the sealing boss and the sealing groove, and when the end cover is installed at the end of the stator assembly, the sealing boss and the sealing groove are both arranged around the axis of the stator assembly, so that the sealing boss and the sealing groove are sealed along the circumference of the stator assembly, which can prevent water leakage from the connection between the end cover and the stator assembly. At the same time, at least one connector connects the end cover and the stator assembly, so that the end cover and the stator assembly can be locked, thereby improving the reliability of the connection between the end cover and the stator assembly, thereby making the connection between the sealing boss and the sealing groove more reliable, and improving the waterproof performance between the end cover and the stator assembly.

[0009] The motor provided by the utility model may also have the following additional technical features:

[0010] In some embodiments, optionally, a first connecting hole is provided on the end cover, a second connecting hole is provided on the stator assembly, and a connecting member is passed through the first connecting hole and the second connecting hole to connect the end cover and the stator assembly.

[0011] In this embodiment, a first connecting hole is provided on the end cover, and a second connecting hole is provided on the stator assembly. The connecting member locks the end cover and the stator assembly through the first connecting hole and the second connecting hole, so that the connection between the sealing boss and the sealing groove is tighter, thereby improving the waterproof performance of the connection between the end cover and the stator assembly.

[0012] In some embodiments, optionally, the motor further includes: a first limiting portion, provided on the end cover, and the first connecting hole is provided on the first limiting portion; a second limiting portion, provided on the stator assembly, and the second connecting hole is provided on the second limiting portion, and when the end cover is connected to the stator assembly, the first limiting portion and the second limiting portion are limitedly matched so that the first connecting hole and the second connecting hole are relatively arranged.

[0013] In this embodiment, the motor also includes a first limiting portion and a second limiting portion, the first limiting portion is arranged on the end cover, and the second limiting portion is arranged on the stator assembly, wherein the first connecting hole is located on the first limiting portion, and the second connecting hole is located on the second limiting portion. In this way, when the end cover and the stator assembly are connected, the first limiting portion and the second limiting portion can be used to position the end cover and the stator assembly, and at the same time, the first connecting hole and the second connecting hole can be aligned along the axial direction of the stator assembly, and then the connecting piece can be inserted into the first connecting hole and the second connecting hole to realize the locking of the stator assembly and the end cover, improve the sealing between the sealing boss and the sealing groove, and avoid separation of the end cover and the stator assembly.

[0014] In some embodiments, optionally, one of the first limiting portion and the second limiting portion is disposed on the inner side of the sealing groove, and the other is disposed on the inner side of the sealing boss.

[0015] In this embodiment, one of the first limiting portion and the second limiting portion is located on the inner side of the sealing groove, and the other is arranged on the inner side of the sealing boss, so that the internal space surrounded by the sealing groove and the sealing boss is larger, thereby ensuring the waterproof performance of the stator and rotor inside the stator assembly.

[0016] In some embodiments, optionally, one of the first limiting portion and the second limiting portion is a limiting boss, and the other is a limiting groove, and one of the first connecting hole and the second connecting hole is disposed on the bottom wall of the limiting groove.

[0017] In this embodiment, when the end cover is installed on the end of the stator assembly, the limiting boss is inserted into the limiting groove, so that the end cover and the stator assembly are positioned, thereby ensuring the reliable fit between the sealing groove and the sealing boss, and ensuring the reliability of the connection between the end cover and the stator assembly by the connecting member, wherein one of the first connecting hole and the second connecting hole that is arranged in the limiting groove is arranged on the bottom wall of the limiting groove.

[0018] In some embodiments, optionally, when the limiting groove is provided on the end cover, a baffle is provided on the side of the end cover facing the stator assembly, and the baffle encloses the limiting groove.

[0019] In this embodiment, when the limiting groove is provided on the end cover, the limiting groove is formed by enclosing the baffle on the end cover, so that there is no need to process the limiting groove on the body of the end cover, or only a groove of a smaller depth needs to be processed on the body of the end cover, thereby reducing the processing depth of the body of the end cover, ensuring the thickness of the end cover, and further ensuring the strength of the end cover.

[0020] In some embodiments, optionally, at least a portion of the outer side wall of the limiting boss is interference fit with at least a portion of the inner side wall of the limiting groove.

[0021] In this embodiment, at least a portion of the outer wall of the limiting boss is interference fit with at least a portion of the inner wall of the limiting groove, so that the limiting boss and the limiting groove can achieve initial fastening of the end cover and the stator assembly while achieving positioning, thereby improving the tightness of the connection between the end cover and the stator assembly, and improving the waterproof performance of the connection between the end cover and the stator assembly. At the same time, the interference fit between the limiting boss and the limiting groove can also achieve sealing at the connection between the two, thereby avoiding water leakage at the connection between the two.

[0022] In some embodiments, optionally, along the extension direction of the axis, the inner wall surface of the limiting groove includes a first wall surface and a second wall surface connected in sequence, the first wall surface is connected to the bottom wall of the limiting groove, and the outer wall of the limiting boss includes a third wall surface and a fourth wall surface connected in sequence, and the third wall surface is connected to the top wall of the limiting boss; when the end cover is connected to the stator assembly, the top wall of the limiting boss is arranged opposite to the bottom wall of the limiting groove, the first wall surface and the third wall surface are interference fit, and the second wall surface and the fourth wall surface are clearance fit.

[0023] In this embodiment, along the axial direction of the stator assembly, the inner wall surface of the limiting groove includes a first wall surface and a second wall surface connected in sequence, and the limiting boss includes a third wall surface and a fourth wall surface connected in sequence, wherein the first wall surface is connected to the bottom wall of the limiting groove, and the third wall surface is connected to the top wall of the limiting boss, and when the end cover is connected to the stator assembly, the top wall of the limiting boss and the bottom wall of the limiting groove are arranged relative to each other, wherein the second wall surface and the fourth wall surface are clearance-matched, so that the limiting boss can smoothly extend into the limiting groove, thereby realizing the preliminary positioning of the limiting boss and the limiting groove; the first wall surface and the third wall surface are interference-fitted, so that the limiting boss and the limiting groove can realize the preliminary tightening of the end cover and the stator assembly, thereby improving the connection reliability between the end cover and the stator assembly.

[0024] In some embodiments, optionally, the second wall surface is inclined from the first wall surface to an end away from the first wall surface in a direction away from the limiting boss.

[0025] In this embodiment, the second wall surface is inclined so that the limiting boss can smoothly enter the limiting groove to achieve preliminary positioning of the end cover and the stator assembly. Optionally, the connection between the first wall surface and the second wall surface is smoothly transitioned.

[0026] In some embodiments, optionally, the first wall surface and the second wall surface are in a stepped structure.

[0027] In this embodiment, the first wall surface and the second wall surface are in a stepped structure, which reduces the processing difficulty on the basis of achieving a clearance fit between the second wall surface and the fourth wall surface and an interference fit between the first wall surface and the third wall surface.

[0028] In some embodiments, optionally, the cross-section of the limiting groove and the cross-section of the limiting boss are both semicircular or circular.

[0029] In this embodiment, the cross-sections of the limiting groove and the limiting boss are both semicircular or circular, which facilitates the limiting cooperation between the limiting boss and the limiting groove.

[0030] In some embodiments, optionally, at least a portion of the sealing boss is interference-fitted with at least a portion of the sealing groove so that the sealing boss is sealingly fitted with the sealing groove.

[0031] In this embodiment, at least a portion of the sealing boss and at least a portion of the sealing groove are sealed by interference fit, so that the sealing boss and the sealing groove form a sealing structure to avoid water leakage from the gap between the sealing boss and the sealing groove.

[0032] In some embodiments, optionally, along the radial direction of the stator assembly, at least one of the two opposite side walls of the sealing groove is interference-fitted with the sealing boss.

[0033] In this embodiment, at least one of the two side walls of the sealing groove opposite to each other in the radial direction of the stator assembly is interference fit with the sealing boss, so that at least one of the two sides of the sealing groove is sealed and connected to the sealing boss, thereby improving the sealing effect at the connection between the stator assembly and the end cover.

[0034] In some embodiments, optionally, the sealing groove and the sealing boss are both annular structures around the axis.

[0035] In this embodiment, the sealing groove and the sealing boss are both annular structures and are arranged around the axis of the stator assembly. Therefore, the sealing groove and the sealing boss can achieve sealing of the end cover and the circumference of the stator assembly, thereby improving the sealing effect.

[0036] In some embodiments, optionally, the motor further comprises: a sealing member disposed between the sealing groove and the sealing boss, and the sealing groove and the sealing boss are sealed and connected via the sealing member.

[0037] In this embodiment, a sealing member is provided between the sealing groove and the sealing boss, thereby improving the sealing performance between the sealing groove and the sealing boss.

[0038] According to a second aspect of the present invention, a household appliance is also provided, comprising: a motor as provided in any of the above embodiments.

[0039] The household appliance provided in the second aspect of the utility model comprises the motor proposed by any of the above technical solutions and therefore has all the beneficial effects of the motor.

[0040] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0042] Figure 1 A schematic structural diagram of a stator assembly according to an embodiment of the utility model is shown;

[0043] Figure 2 A schematic diagram showing the structure of an end cover of an embodiment of the utility model is shown;

[0044] Figure 3 A schematic diagram showing the structure of a motor according to an embodiment of the utility model is shown;

[0045] Figure 4 Shows Figure 3 An enlarged schematic diagram of a motor at A of the illustrated embodiment;

[0046] Figure 5A schematic structural diagram of a motor according to an embodiment of the utility model is shown.

[0047] in, Figures 1 to 5 The corresponding relationship between the reference numerals and the component names is as follows:

[0048] 100 motor, 1 stator assembly, 10 sealing boss, 12 second connecting hole, 14 second limiting portion, 140 limiting boss, 142 third wall, 144 fourth wall, 2 end cover, 20 sealing groove, 22 first connecting hole, 24 first limiting portion, 240 limiting groove, 242 first wall, 244 second wall, 26 baffle, 3 connecting member, 4 sealing member. DETAILED DESCRIPTION

[0049] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0050] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0051] Refer to the following Figures 1 to 5 The following describes a motor 100 and a household appliance according to some embodiments of the present invention.

[0052] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, according to an embodiment of the present invention, the present invention provides a motor 100 , including: a stator assembly 1 , an end cover 2 and at least one connecting member 3 .

[0053] Specifically, the end cover 2 is installed at the end of the stator assembly 1, one of the end cover 2 and the stator assembly 1 is provided with a sealing groove 20, and the other is provided with a sealing boss 10. When the end cover 2 is connected to the stator assembly 1, the sealing boss 10 is arranged in the sealing groove 20, and at least a portion of the sealing boss 10 is sealed with at least a portion of the sealing groove 20, wherein the sealing boss 10 and the sealing groove 20 are both arranged around the axis of the stator assembly 1; the connecting member 3 is used to connect the end cover 2 and the stator assembly 1 to lock the end cover 2 and the stator assembly 1.

[0054] The motor 100 provided by the utility model comprises a stator assembly 1 and an end cover 2, wherein the end cover 2 can be installed at the end of the stator assembly 1, wherein one of the end cover 2 and the stator assembly 1 is provided with a sealing groove 20, and the other is provided with a sealing boss 10, so that the end cover 2 and the stator assembly 1 can be sealed and connected through the cooperation of the sealing boss 10 and the sealing groove 20, and when the end cover 2 is installed at the end of the stator assembly 1, the sealing boss 10 and the sealing groove 20 are both arranged around the axis of the stator assembly 1, so that the sealing boss 10 and the sealing groove 20 are sealed along the circumference of the stator assembly 1, and water leakage can be prevented from occurring at the connection between the end cover 2 and the stator assembly 1. At the same time, at least one connector 3 connects the end cover 2 and the stator assembly 1, so that the end cover 2 and the stator assembly 1 can be locked, thereby improving the reliability of the connection between the end cover 2 and the stator assembly 1, thereby making the connection between the sealing boss 10 and the sealing groove 20 more reliable, and improving the waterproof performance between the end cover 2 and the stator assembly 1.

[0055] Optionally, the stator assembly 1 includes a stator and a shell arranged outside the stator, and one of the sealing groove 20 and the sealing boss 10 is arranged on the shell, and the other is arranged on the end cover 2 .

[0056] Optionally, the number of the connecting members 3 is one or more. Specifically, the number of the connecting members 3 is at least two.

[0057] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, optionally, a first connecting hole 22 is provided on the end cover 2, a second connecting hole 12 is provided on the stator assembly 1, and the connecting member 3 is passed through the first connecting hole 22 and the second connecting hole 12 to connect the end cover 2 and the stator assembly 1.

[0058] In this embodiment, a first connecting hole 22 is provided on the end cover 2, and a second connecting hole 12 is provided on the stator assembly 1. The connecting member 3 realizes locking of the end cover 2 and the stator assembly 1 through the first connecting hole 22 and the second connecting hole 12, so that the connection between the sealing boss 10 and the sealing groove 20 is tighter, thereby improving the waterproof performance of the connection between the end cover 2 and the stator assembly 1.

[0059] Optionally, both the first connection hole 22 and the second connection hole 12 extend along the axial direction of the stator assembly 1 .

[0060] Optionally, the first connection hole 22 passes through the end cover 2 along the axial direction of the stator assembly 1 .

[0061] Optionally, the second connection hole 12 includes a threaded hole, and the connection member 3 includes a screw or a bolt.

[0062] like Figure 1 and Figure 2As shown, in some embodiments, optionally, the motor 100 further includes: a first limiting portion 24, provided on the end cover 2, and the first connecting hole 22 is provided on the first limiting portion 24; a second limiting portion 14, provided on the stator assembly 1, and the second connecting hole 12 is provided on the second limiting portion 14. When the end cover 2 is connected to the stator assembly 1, the first limiting portion 24 and the second limiting portion 14 are limitedly matched so that the first connecting hole 22 and the second connecting hole 12 are relatively arranged.

[0063] In this embodiment, the motor 100 also includes a first limiting portion 24 and a second limiting portion 14, wherein the first limiting portion 24 is arranged on the end cover 2, and the second limiting portion 14 is arranged on the stator assembly 1, wherein the first connecting hole 22 is located on the first limiting portion 24, and the second connecting hole 12 is located on the second limiting portion 14, so that when the end cover 2 and the stator assembly 1 are connected, the end cover 2 and the stator assembly 1 can be positioned by the first limiting portion 24 and the second limiting portion 14, and at the same time, the first connecting hole 22 and the second connecting hole 12 can be aligned along the axial direction of the stator assembly 1, and then the connecting member 3 can be inserted into the first connecting hole 22 and the second connecting hole 12 to realize the locking of the stator assembly 1 and the end cover 2, improve the sealing between the sealing boss 10 and the sealing groove 20, and avoid the separation of the end cover 2 and the stator assembly 1.

[0064] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, one of the first limiting portion 24 and the second limiting portion 14 is disposed on the inner side of the sealing groove 20 , and the other is disposed on the inner side of the sealing boss 10 .

[0065] In this embodiment, one of the first limiting portion 24 and the second limiting portion 14 is located on the inner side of the sealing groove 20, and the other is arranged on the inner side of the sealing boss 10, so that the internal space surrounded by the sealing groove 20 and the sealing boss 10 is larger, thereby ensuring the waterproof performance of the stator and rotor inside the stator assembly 1.

[0066] In a specific application, the sealing groove 20 is arranged on the end cover 2, and the sealing boss 10 is arranged on the stator assembly 1, wherein the first limiting portion 24 is arranged on the inner side of the ring surrounded by the sealing groove 20, and the second limiting portion 14 is arranged on the inner side of the ring surrounded by the sealing boss 10.

[0067] In some embodiments, optionally, one of the first limiting portion 24 and the second limiting portion 14 is a limiting boss 140 , and the other is a limiting groove 240 , and one of the first connecting hole 22 and the second connecting hole 12 is disposed on the bottom wall of the limiting groove 240 .

[0068] In this embodiment, when the end cover 2 is installed at the end of the stator assembly 1, the limiting boss 140 is inserted into the limiting groove 240, so that the end cover 2 and the stator assembly 1 are positioned, thereby ensuring the reliable fit between the sealing groove 20 and the sealing boss 10, and ensuring the reliability of the connection between the end cover 2 and the stator assembly 1 by the connecting member 3.

[0069] Optionally, the first limiting portion 24 is a limiting groove 240 , the second limiting portion 14 is a limiting boss 140 , and the first connecting hole 22 passes through the end cover 2 from the bottom wall of the limiting groove 240 .

[0070] like Figure 2 As shown, in some embodiments, optionally, when the limiting groove 240 is provided on the end cover 2 , a baffle 26 is provided on the side of the end cover 2 facing the stator assembly 1 , and the baffle 26 encloses the limiting groove 240 .

[0071] In this embodiment, when the limiting groove 240 is set on the end cover 2, the limiting groove 240 is formed by the baffle 26 on the end cover 2, so there is no need to process the limiting groove 240 on the body of the end cover 2, or only a groove of a smaller depth needs to be processed on the body of the end cover 2, thereby reducing the processing depth of the body of the end cover 2, ensuring the thickness of the end cover 2, and further ensuring the strength of the end cover 2.

[0072] In some embodiments, optionally, at least a portion of the outer side wall of the limiting boss 140 is interference fit with at least a portion of the inner side wall of the limiting groove 240 .

[0073] In this embodiment, at least a portion of the outer wall of the limiting boss 140 is interference fit with at least a portion of the inner wall of the limiting groove 240, so that the limiting boss 140 and the limiting groove 240 can achieve initial fastening of the end cover 2 and the stator assembly 1 while achieving positioning, thereby improving the tightness of the connection between the end cover 2 and the stator assembly 1, and improving the waterproof performance of the connection between the end cover 2 and the stator assembly 1. At the same time, the interference fit between the limiting boss 140 and the limiting groove 240 can also achieve sealing at the connection between the two, thereby avoiding water leakage at the connection between the two.

[0074] like Figure 3 and Figure 4As shown, in some embodiments, optionally, along the extension direction of the axis, the inner wall surface of the limiting groove 240 includes a first wall surface 242 and a second wall surface 244 connected in sequence, the first wall surface 242 is connected to the bottom wall of the limiting groove 240, and the outer wall of the limiting boss 140 includes a third wall surface 142 and a fourth wall surface 144 connected in sequence, and the third wall surface 142 is connected to the top wall of the limiting boss 140; when the end cover 2 is connected to the stator assembly 1, the top wall of the limiting boss 140 is arranged opposite to the bottom wall of the limiting groove 240, the first wall surface 242 and the third wall surface 142 are interference fit, and the second wall surface 244 and the fourth wall surface 144 are clearance fit.

[0075] In this embodiment, along the axial direction of the stator assembly 1, the inner wall surface of the limiting groove 240 includes a first wall surface 242 and a second wall surface 244 connected in sequence, and the limiting boss 140 includes a third wall surface 142 and a fourth wall surface 144 connected in sequence, wherein the first wall surface 242 is connected to the bottom wall of the limiting groove 240, and the third wall surface 142 is connected to the top wall of the limiting boss 140, and when the end cover 2 is connected to the stator assembly 1, the top wall of the limiting boss 140 is connected to the limiting boss 140. The bottom walls of the groove 240 are arranged relatively to each other, wherein the second wall surface 244 and the fourth wall surface 144 are clearance-fitted, so that the limiting boss 140 can smoothly extend into the limiting groove 240, thereby realizing the initial positioning of the limiting boss 140 and the limiting groove 240; the first wall surface 242 and the third wall surface 142 are interference-fitted, so that the limiting boss 140 and the limiting groove 240 can realize the initial fastening of the end cover 2 and the stator assembly 1, thereby improving the connection reliability between the end cover 2 and the stator assembly 1.

[0076] In a specific application, when the limiting boss 140 and the sealing boss 10 are arranged on the stator assembly 1, and the limiting groove 240 and the sealing groove 20 are arranged on the end cover 2, the top wall of the limiting boss 140, that is, the side wall of the limiting boss 140 is close to the end cover 2 along the axial direction of the stator assembly 1, and the bottom wall of the limiting groove 240, that is, the side wall of the limiting groove 240 is away from the stator assembly 1 along the axial direction of the stator assembly 1.

[0077] In some embodiments, optionally, the second wall surface 244 is inclined from the first wall surface 242 to an end away from the first wall surface 242 in a direction away from the limiting boss 140 .

[0078] In this embodiment, the second wall surface 244 is inclined so that the limiting boss 140 can smoothly enter the limiting groove 240 to achieve preliminary positioning of the end cover 2 and the stator assembly 1. Optionally, the connection between the first wall surface 242 and the second wall surface 244 is smoothly transitioned.

[0079] like Figure 4As shown, in some embodiments, optionally, the first wall surface 242 and the second wall surface 244 are in a stepped structure.

[0080] In this embodiment, the first wall surface 242 and the second wall surface 244 are in a stepped structure, which reduces the processing difficulty on the basis of achieving a clearance fit between the second wall surface 244 and the fourth wall surface 144 and an interference fit between the first wall surface 242 and the third wall surface 142 .

[0081] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the cross-section of the limiting groove 240 and the cross-section of the limiting boss 140 are both semicircular or circular.

[0082] In this embodiment, the cross-sections of the limiting groove 240 and the limiting boss 140 are both semicircular or circular, which facilitates the limiting cooperation between the limiting boss 140 and the limiting groove 240 .

[0083] It is understandable that the cross-section of the limiting groove 240 and the cross-section of the limiting boss 140 may also be approximately circular or approximately semicircular structures.

[0084] The cross section of the limiting boss 140 is a cross section of the limiting boss 140 perpendicular to the axial direction of the stator assembly 1 , and the cross section of the limiting groove 240 is a cross section of the limiting groove 240 perpendicular to the axial direction of the stator assembly 1 .

[0085] In some embodiments, optionally, at least a portion of the sealing boss 10 is interference-fitted with at least a portion of the sealing groove 20 so that the sealing boss 10 and the sealing groove 20 are sealingly fitted.

[0086] In this embodiment, at least a portion of the sealing boss 10 and at least a portion of the sealing groove 20 are sealed by interference fit, so that the sealing boss 10 and the sealing groove 20 form a sealing structure to avoid water leakage from the gap between the sealing boss 10 and the sealing groove 20.

[0087] It can be understood that at least a portion of the sealing boss 10 is interference fit with at least a portion of the sealing groove 20. At least one side of the sealing groove 20 along the radial direction of the stator assembly 1 may be interference fit with the sealing boss 10, or a portion of the sealing boss 10 along the axial direction of the stator assembly 1 may be interference fit with the sealing groove 20.

[0088] In some embodiments, optionally, along the radial direction of the stator assembly 1 , at least one of the two opposite side walls of the sealing groove 20 is interference fit with the sealing boss 10 .

[0089] In this embodiment, at least one of the two side walls of the sealing groove 20 opposite to each other in the radial direction of the stator assembly 1 is interference fit with the sealing boss 10, so that at least one of the two sides of the sealing groove 20 is sealed and connected to the sealing boss 10, thereby improving the sealing effect of the connection between the stator assembly 1 and the end cover 2.

[0090] Optionally, both opposite sides of the sealing groove 20 along the radial direction of the stator assembly 1 are sealedly connected to the sealing boss 10 .

[0091] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the sealing groove 20 and the sealing boss 10 are both annular structures around the axis.

[0092] In this embodiment, the sealing groove 20 and the sealing boss 10 are both annular structures and are arranged around the axis of the stator assembly 1. Therefore, the sealing groove 20 and the sealing boss 10 can achieve sealing around the end cover 2 and the stator assembly 1, thereby improving the sealing effect.

[0093] Optionally, the sealing groove 20 is a closed annular structure around the axis of the stator assembly 1, and the sealing boss 10 is a closed annular structure around the axis of the stator assembly 1, wherein a notch is provided on the sealing boss 10 for the connection line to pass through.

[0094] like Figure 5 As shown, in some embodiments, optionally, the motor 100 further includes: a seal 4 disposed between the sealing groove 20 and the sealing boss 10 , and the sealing groove 20 and the sealing boss 10 are sealed and connected via the seal 4 .

[0095] In this embodiment, a sealing member 4 is provided between the sealing groove 20 and the sealing boss 10 , thereby improving the sealing performance between the sealing groove 20 and the sealing boss 10 .

[0096] Optionally, the sealing member 4 includes an elastic member, such as a rubber member or a silicone member.

[0097] Optionally, the seal 4 is disposed between the sealing groove 20 and the sealing boss 10 along the radial direction of the stator assembly 1 , or the seal 4 is disposed between the sealing groove 20 and the sealing boss 10 along the axial direction of the stator assembly 1 .

[0098] According to an embodiment of the present invention, a household appliance is also provided, comprising: a motor 100 as provided in any of the above embodiments.

[0099] The household appliance provided by the present invention comprises the motor 100 provided in any of the above embodiments, and therefore has all the beneficial effects of the motor 100.

[0100] It should be noted that household appliances include but are not limited to: washing machines, vacuum cleaners, air conditioners, fans, etc.

[0101] In a specific application, the motor 100 realizes sealing between the stator assembly 1 and the end cover 2 by means of the mutual cooperation between the grooves and bosses of the end cover 2 and the stator assembly 1; the motor 100 also includes a connection structure (such as a connector 3) between the end cover 2 and the stator assembly 1, and corresponding connection holes (such as a first connection hole 22 and a second connection hole 12) are provided on the end cover 2 and the stator assembly 1. After the end cover 2 and the stator assembly 1 are positioned by means of a guide structure (such as a first limit portion 24 and a second limit portion 14) around the connection holes, another connector 3 is used to install the end cover 2 and the stator assembly 1 in the connection holes, thereby realizing the connection between the end cover 2 and the stator assembly 1.

[0102] Specifically, the BMC (bulk molding compound) of the stator assembly 1 has an annular boss (such as a sealing boss 10), and the end cover 2 has an annular groove (such as a sealing groove 20), and the boss and the groove are sealed by mutual cooperation. The number of connection structures between the end cover 2 and the stator assembly 1 is ≥2.

[0103] The main parts involved in the motor 100 are the BMC end cover (for example, the end cover 2), the stator assembly 1, the sealing boss 10, the sealing groove 20, the connecting hole on the end cover 2 (for example, the first connecting hole 22), the connecting hole on the stator assembly 1 (for example, the second connecting hole 12), the connector 3, the limiting groove 240, and the limiting boss 140.

[0104] Among them, the BMC end cover and the stator assembly 1 are both formed by an injection molding process. During the assembly process of the end cover 2 and the stator assembly 1, the sealing boss 10 enters the sealing groove 20, and the two cooperate with each other to form a sealing structure. The connecting hole on the end cover 2 and the connecting hole on the stator assembly 1 are aligned with each other. The limiting groove 240 on the end cover 2 and the limiting boss 140 on the stator assembly 1 realize the positioning of the end cover 2 and the stator assembly 1 through the front-stage clearance fit, and the initial tightening of the end cover 2 and the stator assembly 1 is realized through the rear-stage interference fit. Then the connecting piece 3 is inserted into the two connecting holes to completely connect and fix the stator assembly 1 and the end cover 2.

[0105] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0106] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0107] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A motor, characterized in that: include: stator assembly; An end cover, the end cover is mounted on an end of the stator assembly, one of the end cover and the stator assembly is provided with a sealing groove, and the other is provided with a sealing boss, when the end cover is connected to the stator assembly, the sealing boss is arranged in the sealing groove, and at least a portion of the sealing boss is sealingly matched with at least a portion of the sealing groove, wherein the sealing boss and the sealing groove are both arranged around the axis of the stator assembly; At least one connecting member is used to connect the end cover and the stator assembly to lock the end cover and the stator assembly.

2. The motor according to claim 1, characterized in that The end cover is provided with a first connecting hole, the stator assembly is provided with a second connecting hole, and the connecting member is inserted into the first connecting hole and the second connecting hole to connect the end cover and the stator assembly.

3. The motor according to claim 2, characterized in that Also includes: A first limiting portion, disposed on the end cover, and the first connecting hole is disposed on the first limiting portion; The second limiting portion is provided on the stator assembly, and the second connecting hole is provided on the second limiting portion. When the end cover is connected to the stator assembly, the first limiting portion and the second limiting portion are limitedly matched so that the first connecting hole and the second connecting hole are arranged relative to each other.

4. The motor according to claim 3, characterized in that One of the first limiting portion and the second limiting portion is arranged on the inner side of the sealing groove, and the other is arranged on the inner side of the sealing boss.

5. The motor according to claim 3, characterized in that One of the first limiting portion and the second limiting portion is a limiting boss, and the other is a limiting groove. One of the first connecting hole and the second connecting hole is disposed on a bottom wall of the limiting groove.

6. The motor according to claim 5, characterized in that In the case where the limiting groove is provided on the end cover, a baffle is provided on a side of the end cover facing the stator assembly, and the baffle encloses the limiting groove.

7. The motor according to claim 5, characterized in that At least a portion of the outer side wall of the limiting boss is interference fit with at least a portion of the inner side wall of the limiting groove.

8. The motor according to claim 7, characterized in that Along the extension direction of the axis, the inner wall surface of the limiting groove includes a first wall surface and a second wall surface connected in sequence, the first wall surface is connected to the bottom wall of the limiting groove, and the outer side wall of the limiting boss includes a third wall surface and a fourth wall surface connected in sequence, and the third wall surface is connected to the top wall of the limiting boss; When the end cover is connected to the stator assembly, the top wall of the limiting boss is arranged opposite to the bottom wall of the limiting groove, the first wall surface is interference fit with the third wall surface, and the second wall surface is clearance fit with the fourth wall surface.

9. The motor according to claim 8, characterized in that The second wall surface is inclined from the first wall surface to an end away from the first wall surface in a direction away from the limiting boss; or The second wall surface and the first wall surface are in a step structure.

10. The motor according to claim 5, characterized in that The cross-sections of the limiting groove and the limiting boss are both semicircular or circular.

11. The electric machine according to any one of claims 1 to 10, characterized in that At least a portion of the sealing boss is interference-fitted with at least a portion of the sealing groove so that the sealing boss is sealingly fitted with the sealing groove.

12. The motor according to claim 11, characterized in that Along the radial direction of the stator assembly, at least one of the two opposite side walls of the sealing groove is interference-fitted with the sealing boss.

13. The electric machine according to any one of claims 1 to 10, characterized in that The sealing groove and the sealing boss are both annular structures around the axis.

14. The electric machine according to any one of claims 1 to 10, characterized in that Also includes: A sealing member is disposed between the sealing groove and the sealing boss, and the sealing groove and the sealing boss are sealed and connected via the sealing member.

15. A household appliance, characterized in that: include: An electric machine as claimed in any one of claims 1 to 14.

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