CN219287218U

CN219287218U - Motor and electrical equipment

Info

Publication number: CN219287218U
Application number: CN202320417268.XU
Authority: CN
Inventors: 罗培源; 郑礼成; 吴迪; 史国俊; 郑浩; 龙康喜
Original assignee: Welling Wuhu Motor Manufacturing Co Ltd
Current assignee: Welling Wuhu Motor Manufacturing Co Ltd
Priority date: 2023-03-08
Filing date: 2023-03-08
Publication date: 2023-06-30
Anticipated expiration: 2033-03-08

Abstract

The utility model provides a motor and electrical equipment, the motor includes: the stator assembly is provided with at least one wire fixing groove which is used for accommodating wires; the end cover is provided with at least one wire fixing tooth, the end cover is arranged at the end part of the stator assembly under the condition that the end cover is connected with the end part of the stator assembly, the wire fixing tooth is arranged in the wire fixing groove, and the wire is arranged between the wire fixing tooth and the inner wall surface of the wire fixing groove.

Description

Motor and electrical equipment

Technical Field

The utility model relates to the technical field of motors, in particular to a motor and electrical equipment.

Background

At present, as the application scenes of products such as household appliances and the like carrying motors are wider, the diversity of motor application environments is also increased.

In the related art, the phenomenon of internal water inflow of the motor under the rain working condition, especially the situation that the water inflow condition is serious at the outlet end position of the motor, and the performance of the motor is easily reduced and even the motor cannot work normally, is easy to cause.

Disclosure of Invention

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

To this end, a first aspect of the utility model provides an electric machine.

The second aspect of the utility model also provides an electrical device.

In view of this, a first aspect of the present utility model proposes an electric machine comprising: the stator assembly is provided with at least one wire fixing groove which is used for accommodating wires; the end cover is provided with at least one wire fixing tooth, the end cover is arranged at the end part of the stator assembly under the condition that the end cover is connected with the end part of the stator assembly, the wire fixing tooth is arranged in the wire fixing groove, and the wire is arranged between the wire fixing tooth and the inner wall surface of the wire fixing groove.

The motor provided by the utility model comprises a stator assembly and an end cover, wherein the end cover is arranged at the end part of the stator assembly. At least one wire fixing groove is formed in the stator assembly, and at least one wire fixing tooth is arranged on the end cover. Under the condition that the end cover is covered on the stator assembly, the wire fixing teeth are arranged in the wire fixing grooves, the wire fixing teeth and the wire fixing grooves clamp the wires together, gaps between the wires and the wire fixing grooves are reduced, sealing between the wires and the wire fixing grooves is achieved, water is prevented from entering the gaps between the wires and the wire fixing grooves, and the working performance of the motor is guaranteed. Simultaneously, through gu line tooth and gu wire casing clamp wire, can also avoid the wire pine to take off or pulling under the condition that the wire received external force.

The motor provided by the utility model can also have the following additional technical characteristics:

in some possible designs, the wire-fixing groove has a first step structure along a radial direction of the stator assembly, the wire-fixing tooth has a second step structure, the first step structure is disposed opposite to the second step structure, and the wire is disposed between the first step structure and the second step structure and extends from the first step structure and the second step structure toward an inside of the stator assembly.

In this design, the wire-fixing groove has a first step structure along the radial direction of the stator assembly, and the wire-fixing tooth has a second step structure, i.e., the first step structure forms a step along the radial direction of the stator assembly, and the second step structure forms a step along the radial direction of the stator assembly. The first step structure and the second step structure are oppositely arranged, so that the first step structure and the second step structure are mutually buckled, and then a wire clamped between the first step structure and the second step structure is bent and deformed, and sealing of the position and fixing of the wire are realized.

In some possible designs, a first connection is provided on the end cap and a second connection is provided on the stator assembly, the first connection being connected to the second connection to secure the end cap and the stator assembly.

In the design, a first connecting part is arranged on the end cover, a second connecting part is arranged on the stator assembly, and the end cover is fixed on the stator assembly through the connection of the first connecting part and the second connecting part, so that the space inside the stator assembly is separated from the outside. Protecting the stator assembly.

In some possible designs, one of the first and second connection portions includes a first boss and the other includes a first groove, the first boss being an interference fit with the first groove.

In this design, first connecting portion and second connecting portion are buckle connection, and specifically, one of first connecting portion and second connecting portion is first boss, and another is first recess, and first boss card is gone into in the first recess, realizes the connection of end cover and stator module, and first boss and first recess interference fit have increased the joint strength between end cover and the stator module, avoid the end cover to drop.

In some possible designs, one of the first boss and the first groove, which is arranged on the end cover, is of a closed annular structure, one of the first boss and the first groove, which is arranged on the stator assembly, is of an annular structure with a notch, and the wire fixing groove is arranged at the notch; along the radial direction of stator module, the both sides wall of first recess all with first boss interference fit.

In the design, one of the first boss and the first groove, which is arranged on the end cover, is of a closed annular structure, so that the production and the manufacturing are facilitated, and the processing difficulty is reduced; one of the stator components is of an annular structure with a notch, namely, the second connecting part is of an annular structure along the circumferential direction of the stator component, and the annular structure is provided with the notch, so that a wire fixing groove is formed at the notch, and the wire outlet of the wire is realized. The two side walls of the first groove are in interference fit with the first boss in the radial direction of the stator assembly, so that after the first boss is installed in the first groove, the two sides of the first groove are sealed through interference fit, and the sealing effect of the joint between the stator assembly and the end cover is improved.

In some possible designs, the notch is further provided with a sealing part, and the sealing part is located at two sides of the wire fixing groove and is connected with the second connecting part.

In this design, breach department still is provided with sealing portion, and sealing portion sets up in the both sides of solidus groove, and is connected with second connecting portion for breach department realizes sealedly except the part of solidus groove and solidus tooth, promotes the sealing performance of end cover and stator module cooperation department.

In some possible designs, a baffle is also provided on the end cap, the baffle being positioned to correspond to the notch.

In the design, the end cover is also provided with a baffle plate which is arranged corresponding to the notch and used for preventing water from entering from the gap of the notch.

In some possible designs, the end cap is provided with at least one first positioning portion, and the stator assembly is provided with at least one second positioning portion, and the at least one first positioning portion is connected with the at least one second positioning portion for positioning the end cap.

In the design, at least one first positioning part is arranged on the end cover, at least one second positioning part is arranged on the stator assembly, and the end cover and the stator assembly are convenient to install through the pre-positioning of the first positioning part and the second positioning part.

In some possible designs, one of the first positioning portion and the second positioning portion is a second groove, and the other is a second boss, and the second boss is disposed in the second groove; the protruding height of the second boss is more than or equal to 1mm.

In the design, the first positioning part and the second positioning part are matched in a buckling connection mode, specifically, one of the first positioning part and the second positioning part is a second groove, the other is a second boss, and the second boss is arranged in the second groove, so that the positioning structure between the end cover and the stator assembly is simple. Wherein, the protrusion height of second boss is greater than or equal to 1mm, can guarantee the location effect of second boss and second recess.

According to a second aspect of the present utility model, there is also provided an electrical device comprising: the motor as set forth in any one of the above technical solutions.

The electrical equipment provided by the second aspect of the utility model has all the beneficial effects of the motor because the electrical equipment comprises the motor provided by any one of the technical schemes.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 shows one of the structural schematic diagrams of an electric machine according to an embodiment of the present utility model;

FIG. 2 shows an enlarged schematic view of the motor of the embodiment of FIG. 1 at A;

FIG. 3 shows a second schematic diagram of the motor of one embodiment of the present utility model;

FIG. 4 shows an enlarged schematic view of the structure of the motor at B of the embodiment of FIG. 3;

FIG. 5 shows a third schematic diagram of the motor of one embodiment of the present utility model;

FIG. 6 shows an enlarged schematic view of the motor of the embodiment of FIG. 5 at C;

FIG. 7 illustrates a schematic structural view of a stator assembly in accordance with one embodiment of the present utility model;

fig. 8 shows a schematic structural view of an end cap according to an embodiment of the present utility model.

The correspondence between the reference numerals and the component names in fig. 1 to 8 is:

1 stator assembly, 10 wire-fixing groove, 102 first step structure, 11 second connecting part, 110 first boss, 112 gap, 12 sealing part, 13 second positioning part, 130 second boss, 2 end caps, 20 wire retention teeth, 202 second step configuration, 21 first connection, 210 first groove, 22 baffles, 23 first positioning portions, 230 second groove.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

The motor and the electric device according to some embodiments of the present utility model are described below with reference to fig. 1 to 8.

As shown in fig. 1 and 2, according to an embodiment of the present utility model, the present utility model proposes an electric machine comprising: a stator assembly 1 and an end cap 2.

Specifically, at least one wire fixing groove 10 is arranged on the stator assembly 1, and the wire fixing groove 10 is used for fixing wires; the end cap 2 is provided at an end of the stator assembly 1 in a state where the end cap 2 is connected with the end of the stator assembly 1. Wherein, be equipped with at least one solidus tooth 20 on the end cover 2, gu the line tooth 20 is located gu in the wire casing 10, and the wire is located between the inner wall surface of solidus tooth 20 and wire casing 10.

The motor provided by the utility model comprises a stator assembly 1 and an end cover 2, wherein the end cover 2 is arranged at the end part of the stator assembly 1. At least one wire fixing groove 10 is arranged on the stator assembly 1, and at least one wire fixing tooth 20 is arranged on the end cover 2. Under the condition that the end cover 2 is covered on the stator assembly 1, the wire fixing teeth 20 are arranged in the wire fixing groove 10, the wire fixing teeth 20 and the wire fixing groove 10 clamp the wires together, the gap between the wires and the wire fixing groove 10 is reduced, sealing between the wires and the wire fixing groove 10 is achieved, water is prevented from entering the gap between the wires and the wire fixing groove 10, meanwhile, the wires are clamped through the wire fixing teeth 20 and the wire fixing groove 10, and the wires can be prevented from loosening or pulling under the condition that the wires are subjected to external force.

It can be understood that the wire fixing teeth 20 are of tooth-shaped structures arranged on the end cover 2, and further, the wire fixing teeth 20 protrude out of the end surface of the end cover 2, and can further extend into the wire fixing groove 10 to jointly compress the wires with the wire fixing groove 10.

When the number of the wire fixing grooves 10 and the number of the wire fixing teeth 20 are all multiple, the wire fixing grooves 10 and the wire fixing teeth 20 are arranged in a one-to-one correspondence mode.

Specifically, the wire includes a power line, and the stator assembly 1 includes an iron core and an enamel wire wound on the iron core, and the power line is connected with the enamel wire.

As shown in fig. 5 and 6, the wire fixing groove 10 has a first step structure 102 and the wire fixing tooth 20 has a second step structure 202 in the radial direction of the stator assembly 1 according to an embodiment of the present utility model.

Specifically, the first step structure 102 is disposed opposite to the second step structure 202, and the conductive wire is disposed between the first step structure 102 and the second step structure 202 and extends from the first step structure 102 and the second step structure 202 toward the inside of the stator assembly 1.

In this embodiment, the wire fixing groove 10 has a first step structure 102 in the radial direction of the stator assembly 1, and the wire fixing tooth 20 has a second step structure 202, that is, the first step structure 102 forms a step in the radial direction of the stator assembly 1, and the second step structure 202 forms a step in the radial direction of the stator assembly 1. The first step structure 102 and the second step structure 202 are oppositely arranged, so that the first step structure 102 and the second step structure 202 are mutually buckled, and then a wire clamped between the first step structure 102 and the second step structure 202 is bent and deformed, and sealing of the position and fixation of the wire are realized.

It will be appreciated that the stator assembly 1 includes a housing and a stator portion disposed in the housing, and the conductive wire extends to the interior of the housing along the first step structure 102 and the second step structure 202, and then bends when passing through the bending portions of the first step structure 102 and the second step structure 202, so as to improve the fixing effect on the conductive wire, and meanwhile, also improve the sealing performance, and further avoid water inflow.

In a specific application, the first step structure 102 is raised from the inside of the stator assembly 1 to the outside of the stator assembly 1 in the radial direction of the stator assembly 1, and correspondingly, the second step structure 202 is gradually lowered to the outside of the stator assembly 1 in the radial direction of the stator assembly 1, or the first step structure 102 is lowered to the outside of the stator assembly 1 from the inside of the stator assembly 1, and correspondingly, the second step structure 202 is gradually raised to the outside of the stator assembly 1.

As shown in fig. 3 and 4, according to an embodiment of the present utility model, the end cap 2 is provided with a first connection portion 21, and the stator assembly 1 is provided with a second connection portion 11. Wherein the first connection portion 21 is connected with the second connection portion 11 to fix the end cap 2 and the stator assembly 1.

In this embodiment, the first connection portion 21 is provided on the end cap 2, the second connection portion 11 is provided on the stator assembly 1, and the end cap 2 is fixed to the stator assembly 1 by the connection of the first connection portion 21 and the second connection portion 11, so that the space inside the stator assembly 1 is separated from the outside. Which serves as a shield for the stator assembly 1.

It is understood that the first connection portion 21 and the second connection portion 11 may take various structural forms. For example, the first connection portion 21 and the second connection portion 11 are of a snap-fit structure, specifically, one of the first connection portion 21 and the second connection portion 11 is a boss, and the other is a through hole; or one of the first connecting part 21 and the second connecting part 11 is a boss, and the other is a clamping groove; or the first connecting part 21 and the second connecting part 11 are of an adhesive structure, specifically, one of the first connecting part 21 and the second connecting part 11 is adhesive, the other is an adhesive surface, and the two parts are in adhesive connection; or the first connection portion 21 and the second connection portion 11 are magnetic structures, specifically, the first connection portion 21 and the second connection portion 11 are permanent magnets or electromagnets, and the first connection portion 21 and the second connection portion 11 are attracted.

As shown in fig. 4, according to one embodiment of the present utility model, one of the first and

second connection parts

21 and 11 includes the first boss 110, and the other includes the first groove 210, and the first boss 110 is interference-fitted with the first groove 210.

In this embodiment, the first connection portion 21 and the second connection portion 11 are in snap connection, specifically, one of the first connection portion 21 and the second connection portion 11 is a first boss 110, the other is a first groove 210, the first boss 110 is clamped into the first groove 210, connection between the end cover 2 and the stator assembly 1 is achieved, and the first boss 110 and the first groove 210 are in interference fit, so that connection strength between the end cover 2 and the stator assembly 1 is increased, and falling of the end cover 2 is avoided.

As shown in fig. 1, according to one embodiment of the present utility model, one of the first boss 110 and the first groove 210, which is provided on the end cover 2, has a closed annular structure, one of the stator assemblies 1, which has an annular structure with a notch 112, and the wire fixing groove 10 is provided at the notch 112; both sidewalls of the first groove 210 are interference-fitted with the first boss 110 in the radial direction of the stator assembly 1.

In this embodiment, one of the first boss 110 and the first groove 210 disposed on the end cover 2 has a closed annular structure, so as to facilitate production and manufacture and reduce processing difficulty; one of the stator assemblies 1 is in an annular structure with a notch 112, that is, the second connecting part 11 is in an annular structure along the circumferential direction of the stator assembly 1, and the notch 112 is arranged on the annular structure, so that the wire fixing groove 10 is arranged at the notch 112, and the wire outlet of the wire is realized. The two sidewalls of the first groove 210 are in interference fit with the first boss 110 along the radial direction of the stator assembly 1, so that after the first boss 110 is installed in the first groove 210, the two sides of the first groove 210 are sealed by interference fit, and the sealing effect of the joint between the stator assembly 1 and the end cover 2 is improved.

It can be appreciated that along the circumference of the stator assembly 1, a part of the stator assembly is sealed at the outlet position of the wire through the cooperation of the wire fixing groove 10 and the wire fixing tooth 20, and the other part of the stator assembly is sealed through the interference fit of the first boss 110 and the first groove 210, so that along the circumference of the stator assembly 1, the stator assembly 1 and the end cover 2 have good sealing effect, and water inflow is avoided under the raining working condition.

As shown in fig. 1 and 2, according to an embodiment of the present utility model, the notch 112 is further provided with a sealing portion 12, and the sealing portion 12 is located at both sides of the wire fixing groove 10 and connected to the second connection portion 11.

In this embodiment, the notch 112 is further provided with a sealing portion 12, and the sealing portions 12 are disposed on two sides of the wire fixing groove 10 and connected with the second connecting portion 11, so that the portion of the notch 112 except for the wire fixing groove 10 and the wire fixing teeth 20 is sealed, and sealing performance of the matching portion of the end cover 2 and the stator assembly 1 is improved.

In a specific application, in the case that the second connection portion 11 is the first boss 110, the sealing portion 12 includes a groove structure, and in the case that the second connection portion 11 is the first groove 210, the sealing portion 12 includes a boss structure, so that the sealing portion 12 cooperates with the second connection portion 11 to achieve sealing of the portion.

It will be appreciated that the depth of the notch 112 may be set according to the actual situation along the axial direction of the stator assembly 1, and accordingly, the height of the sealing portion 12 may also be set according to the actual situation, so that the sealing portion 12 is better matched with the second connecting portion 11.

Of course, a portion of the second connection portion 11 may be configured as a fitting structure corresponding to the sealing portion 12, for example, when the height of the sealing portion 12 in the axial direction is low, a portion of the second connection portion 11 that fits the sealing portion 12 may be protruded toward the stator assembly 1 to fit the sealing portion 12, when the height of the sealing portion 12 in the axial direction is high, a portion of the second connection portion 11 that fits the sealing portion 12 may be recessed toward a direction away from the stator assembly 1, and so on.

As shown in fig. 2, according to an embodiment of the present utility model, the end cap 2 is further provided with a baffle 22, where the baffle 22 is disposed corresponding to the notch 112.

In this embodiment, the end cap 2 is further provided with a baffle 22, and the baffle 22 is disposed corresponding to the notch 112, so as to prevent water from entering from the gap of the notch 112.

In a particular application, the baffle extends from the end cap 2 in the axial direction of the stator assembly 1.

Further, the baffle 22 snaps into the notch 112.

As shown in fig. 7 and 8, according to an embodiment of the present utility model, at least one first positioning portion 23 is provided on the end cap 2, and at least one second positioning portion 13 is provided on the stator assembly 1. The at least one first positioning portion 23 is connected to the at least one second positioning portion 13 for positioning the end cap 2.

In this embodiment, at least one first positioning portion 23 is provided on the end cover 2, at least one second positioning portion 13 is provided on the stator assembly 1, and installation of the end cover 2 and the stator assembly 1 is facilitated by pre-positioning of the first positioning portion 23 and the second positioning portion 13.

It will be appreciated that, when the end cap 2 is mounted, the end cap 2 and the stator assembly 1 are pre-positioned by the first positioning portion 23 and the second positioning portion 13, and then the end cap 2 and the stator assembly 1 are fixed by the first connecting portion 21 and the second connecting portion 11.

In a specific application, the number of the first positioning portions 23 and the second positioning portions 13 is plural, the plurality of second positioning portions 13 are arranged at intervals along the circumferential direction of the stator assembly 1, and the plurality of first positioning portions 23 are arranged in one-to-one correspondence with the plurality of second positioning portions 13.

As shown in fig. 7 and 8, according to one embodiment of the present utility model, one of the first positioning portion 23 and the second positioning portion 13 is a second groove 230, the other is a second boss 130, and the second boss 130 is disposed in the second groove 230; the protruding height of the second boss 130 is 1mm or more.

In this embodiment, the first positioning portion 23 and the second positioning portion 13 are matched by a snap connection manner, specifically, one of the first positioning portion 23 and the second positioning portion 13 is a second groove 230, the other is a second boss 130, and the second boss 130 is disposed in the second groove 230, so that the positioning structure between the end cover 2 and the stator assembly 1 is simple. Wherein, the protruding height of the second boss 130 is greater than or equal to 1mm, so that the positioning effect of the second boss 130 and the second groove 230 can be ensured.

In a specific application, the protruding height of the second boss 130 is greater than or equal to 1mm and less than or equal to 50mm.

Further, the protruding height of the second boss 130 is 1mm or more and 5mm or less. Specifically, the height of the second boss 130 is any value of 2mm, 3mm, 4mm, etc.

According to one embodiment of the utility model, the end cap 2 and the stator assembly 1 are both of unitary construction.

In this embodiment, the end cover 2 and the stator assembly 1 are of an integral structure, so that the structural strength of the end cover 2 and the stator assembly 1 is increased, and meanwhile, assembly of a plurality of parts is avoided, and water leakage at the joint of the parts is avoided.

In a specific application, the end cap 2 and the stator assembly 1 are both formed by an injection molding process.

In one possible design, the stator assembly 1 includes a stator portion including an iron core and an enamel wire, and a housing coated on the outside of the stator portion by integral injection molding, so that the stator portion and the housing are in an integral structure.

According to an embodiment of the present utility model, there is also provided an electrical apparatus including: an electric machine as set forth in any one of the embodiments above.

The electrical equipment provided by the utility model has all the beneficial effects of the motor because the electrical equipment comprises the motor provided by any embodiment.

It should be noted that the electrical apparatus includes, but is not limited to: washing machines, cleaners, air conditioners, fans, and the like.

In a specific application, the motor includes an end cap 2, a stator assembly 1, a positioning boss (i.e., second boss 130), a positioning groove (i.e., second groove 230), a sealing boss (i.e., first boss 110), wire fixing teeth 20, and wire fixing grooves 10. The end cap 2 is a bulk molding compound (Bulk Molding Compound, BMC) end cap 2.

The BMC end cover 2 and the stator assembly 1 are formed through an injection molding process, and in the assembly process of the end cover 2 and the stator assembly 1, firstly, the positioning groove of the BMC end cover 2 is aligned with the positioning boss of the stator assembly 1, so that the BMC end cover 2 and the stator assembly 1 are pre-positioned. And then the BMC end cover 2 and the stator assembly 1 are assembled by pressing a machine table, and waterproof sealing is realized by interference fit between a sealing boss on the stator assembly 1 and a sealing groove on the end cover 2. The wire outlet is provided with a step-shaped structure, the wire fixing teeth 20 and the wire fixing grooves 10 are matched with each other, the wire fixing teeth 20 on the end cover 2 press the wire harness in the wire fixing grooves 10 of the stator assembly 1, and the wire harness is bent and deformed through the step structure, so that the sealing of the wire harness is realized, and the wire harness is fixed.

The positioning boss comprises a positioning column, and the distance between the positioning column and the end face is more than or equal to 1mm; the number of the wire fixing grooves 10 and the number of the wire fixing teeth 20 are more than or equal to 3.

In the present utility model, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An electric machine, comprising:

the stator assembly is provided with at least one wire fixing groove which is used for accommodating wires;

the end cover is provided with at least one wire fixing tooth, and is arranged at the end part of the stator assembly under the condition that the end cover is connected with the end part of the stator assembly, the wire fixing tooth is arranged in the wire fixing groove, and the wire is arranged between the wire fixing tooth and the inner wall surface of the wire fixing groove.

2. The electric machine of claim 1, wherein the wire-fixing groove has a first step structure and the wire-fixing tooth has a second step structure along a radial direction of the stator assembly, the first step structure being disposed opposite to the second step structure, and the wire is disposed between the first step structure and the second step structure and extends from the first step structure and the second step structure toward an inside of the stator assembly.

3. The electric machine of claim 1, wherein the end cap is provided with a first connection portion and the stator assembly is provided with a second connection portion, the first connection portion being connected to the second connection portion to secure the end cap and the stator assembly.

4. The electric machine of claim 3, wherein one of the first and second connection portions includes a first boss and the other includes a first groove, the first boss being an interference fit with the first groove.

5. The motor of claim 4, wherein one of the first boss and the first groove, which is provided on the end cover, is a closed annular structure, one of the first boss and the first groove, which is provided on the stator assembly, is an annular structure with a notch, and the wire fixing groove is provided at the notch;

along the radial direction of the stator assembly, two side walls of the first groove are in interference fit with the first boss.

6. The motor of claim 5, wherein the notch is further provided with a sealing portion, and the sealing portion is located at two sides of the wire fixing groove and connected with the second connecting portion.

7. The motor of claim 5, wherein the end cap is further provided with a baffle, and the baffle is disposed corresponding to the notch.

8. The electric machine of any one of claims 1 to 7, wherein at least one first locating portion is provided on the end cap, at least one second locating portion is provided on the stator assembly, and at least one first locating portion is connected to at least one second locating portion for locating the end cap.

9. The motor of claim 8, wherein one of the first positioning portion and the second positioning portion is a second groove, the other is a second boss, and the second boss is disposed in the second groove;

the protruding height of the second boss is more than or equal to 1mm.

10. An electrical device, comprising:

an electrical machine as claimed in any one of claims 1 to 9.