CN114825749A

CN114825749A - Motor and electrical equipment

Info

Publication number: CN114825749A
Application number: CN202210617204.4A
Authority: CN
Inventors: 罗培源; 郑礼成; 吴迪
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd; Welling Wuhu Motor Manufacturing Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd; Welling Wuhu Motor Manufacturing Co Ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-07-29

Abstract

The invention discloses a motor and electrical equipment, and belongs to the technical field of motors, wherein the motor comprises a plastic package shell, an end cover and a wire fixing clamp, wherein one end of the plastic package shell is provided with an opening, the end surface of the plastic package shell positioned at the opening is a first end surface, and the side wall of the plastic package shell is provided with a wire passing groove which extends from the first end surface along the axial direction of a stator assembly; the end face, facing the end cover, of the wire fixing clamp is a second end face, and the second end face protrudes relative to the first end face along the axial direction of the stator assembly. When the wire fixing clamp is assembled in the wire passing groove, the second end face of the wire fixing clamp protrudes out of the first end face of the plastic package shell, the end cover covers the opening to extrude the second end face, so that the wire fixing clamp is deformed, the wire fixing clamp is attached to the contact surface of the wire passing groove more tightly, effective sealing is formed, the sealing performance between the wire fixing clamp and the stator assembly is improved, the problem that water easily enters the wire outlet position of the motor under severe working conditions is effectively solved, and the operation reliability of the motor is improved.

Description

Motor and electrical equipment

Technical Field

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

Background

In the related art, the brushless motor can cause the phenomenon of water inflow inside the motor under severe working conditions such as rain, and particularly, the water inflow condition at the outlet end of the motor is severe, so that the performance of the motor is reduced and even the motor cannot work normally.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the motor provided by the invention has the advantages that the sealing performance of the motor at the wire outlet position is effectively improved, the phenomenon of water inlet of the motor is reduced, and the operation reliability of the motor is improved.

The invention also provides electrical equipment comprising the motor.

An electric machine according to an embodiment of the first aspect of the invention comprises:

the stator assembly comprises a plastic package shell, wherein one end of the plastic package shell is provided with an opening, the end face of the plastic package shell, which is positioned at the opening, is a first end face, and the side wall of the plastic package shell is provided with a wire passing groove which extends from the first end face along the axial direction of the stator assembly;

the end cover is covered at the opening;

the wire fixing clamp is an elastic piece and is arranged in the wire passing groove to be used for fixing wires, the end face, facing the end cover, of the wire fixing clamp is a second end face, the second end face protrudes relative to the first end face along the axial direction of the stator assembly, and the wire fixing clamp is extruded by the end cover to deform so as to seal the wire passing groove.

The motor provided by the embodiment of the invention has at least the following beneficial effects:

the stator module of motor forms the plastic envelope casing through moulding plastics, set up the line groove at the opening part of plastic envelope casing, and utilize to have elastic solid fastener setting in crossing the line groove, can fix the electric wire of drawing from crossing the line groove through solid fastener, solid fastener assembles when crossing the line inslot, along stator module's axial, the second terminal surface of solid fastener is for the first terminal surface protrusion of plastic envelope casing, the end cover lid closes the opening part and produces the extrusion to the second terminal surface, make solid fastener take place deformation, thereby it is inseparabler to make solid fastener and the contact surface laminating of crossing the line groove, form effectual sealed, improve the leakproofness between solid fastener and the stator module, effectively solve the problem that the position of being qualified for the next round of competitions easily intake of motor under harsh operating mode, promote motor operational reliability.

According to some embodiments of the invention, the second end face protrudes with respect to the first end face by a height h, satisfying: h is more than or equal to 0.5 mm.

According to some embodiments of the invention, along a radial direction of the stator assembly, one side of the wire fixing clip is provided with a first limiting portion fastened with the outer side wall of the plastic package shell, and the other side of the wire fixing clip is provided with a second limiting portion fastened with the inner side wall of the plastic package shell.

According to some embodiments of the present invention, a first groove is formed between the first position-limiting portion and the second position-limiting portion, and a bottom surface of the first groove is attached to an inner wall of the wire passing groove.

According to some embodiments of the invention, a second groove for accommodating the second limiting part is arranged on the inner side wall of the plastic package shell close to the wire passing groove, and the thickness of the second limiting part is smaller than the depth of the second groove along the radial direction of the stator assembly.

According to some embodiments of the invention, a first chamfer structure is arranged between the inner wall of the wire passing groove and the outer side wall of the plastic package shell, and a second chamfer structure is arranged between the inner wall of the wire passing groove and the inner side wall of the plastic package shell.

According to some embodiments of the invention, a plurality of the wires are arranged to form a wire harness, and the wire-fixing clip is injection molded with the wire harness to form an integral structure.

According to some embodiments of the invention, the wire fixing clip is made of silicone or rubber.

According to some embodiments of the invention, the wire clamp has an elastic modulus e, satisfying: e is more than or equal to 1.2MPa and less than or equal to 5.4 MPa.

According to some embodiments of the invention, the wire fixation clip has a hardness of c, satisfying: c is more than or equal to 30HA and less than or equal to 70 HA.

According to some embodiments of the invention, an annular flange is provided at the opening of the plastic package casing, the end cap is provided with a mounting groove in interference fit with the flange, the first end surface is formed on a surface of the flange along the axial direction of the stator assembly, and a sealing member is provided between a groove bottom of the mounting groove and the first end surface.

According to some embodiments of the present invention, the motor includes a conductive member, the end cap is a first end cap, the other end of the stator assembly away from the first end cap is provided with a second end cap, one end of the conductive member is electrically connected to the first end cap, and the other end of the conductive member extends in the axial direction of the plastic package housing and is electrically connected to the second end cap.

The electric appliance according to the second aspect embodiment of the present invention includes the motor of the first aspect embodiment described above.

The electrical equipment provided by the embodiment of the invention at least has the following beneficial effects:

the motor of the embodiment is applied to the electrical equipment, the motor is provided with the wire passing groove through the opening of the plastic package shell, the elastic wire fixing clamp is arranged in the wire passing groove, the electric wire led out from the wire passing groove can be fixed through the wire fixing clamp, when the wire fixing clamp is assembled in the wire passing groove, the axial direction of the stator assembly is along the axial direction of the stator assembly, the second end face of the wire fixing clamp protrudes relative to the first end face of the plastic package shell, the end cover covers the opening to extrude the second end face, the wire fixing clamp is deformed, the wire fixing clamp is attached to the contact surface of the wire passing groove more tightly, effective sealing is formed, the sealing performance between the wire fixing clamp and the stator assembly is improved, the problem that the wire outlet position of the motor is easy to enter water under a severe working condition is effectively solved, the operation reliability of the motor is improved, and the operation of the electrical equipment is more stable.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded view of a motor according to an embodiment of the present invention;

fig. 2 is a schematic view of an assembly structure of a motor according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of the invention at A in FIG. 2;

fig. 4 is a schematic cross-sectional view of a motor according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a wire retaining clip according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a stator assembly of an embodiment of the present invention;

FIG. 7 is an enlarged schematic view of the invention at B of FIG. 6;

FIG. 8 is a schematic view of another perspective of a stator assembly in accordance with an embodiment of the present invention;

FIG. 9 is a graph showing the relationship between the hardness of the wire clip and the coupling force of the first cap according to the present invention.

Reference numerals:

a stator assembly 100; a plastic package housing 110; an accommodating groove 111; a second groove 112; an opening 120; a flange 130; a first end face 131; a card slot 132; a wire passage groove 140; the first chamfer structure 141; a second chamfer structure 142;

the first end cap 200; a mounting groove 210;

a second end cap 300;

a seal 400;

a conductive member 500; a first bend section 510; a second bending section 520; a spring plate 530;

a wire fixing clip 600; a second end face 610; a first stopper 620; a second stopper portion 630; a first recess 640;

a wire harness 700;

a rotor assembly 800; a bearing 810;

an electric machine 1000.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.

In the description of the present invention, it should be noted that the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the terms in the present invention by combining the specific contents of the technical solutions.

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the embodiments described below are some, but not all embodiments of the present invention.

A motor 1000 according to an embodiment of the present invention is described with reference to fig. 1 to 9, where the motor 1000 is a brushless motor and is applied to a household appliance such as an air conditioner, and the motor 1000 is described below with a specific example.

Referring to fig. 1, a motor 1000 according to an embodiment of the present invention includes a stator assembly 100, a first end cap 200, and a second end cap 300, where the stator assembly 100 forms a plastic package housing 110 through injection molding, an installation space is formed inside the plastic package housing 110, the installation space is used for accommodating a rotor assembly 800, one end of the plastic package housing 110 in an axial direction of the stator assembly 100 is opened to form an opening 120, and the opening 120 is communicated with the installation space. During assembly, the stator assembly 100 is first injection-molded to form the plastic package housing 110, and then the rotor assembly 800 and other components are assembled into the installation space through the opening 120. The first end cap 200 is assembled at one end of the stator assembly 100 located at the opening 120, the opening 120 is covered by the first end cap 200, and the second end cap 300 is disposed at the other end of the plastic package housing 110 far away from the first end cap 200. The bearings 810 are respectively installed on the first end cap 200 and the second end cap 300, and the rotor assembly 800 includes a rotating shaft, and the rotating shaft is supported by the bearings 810 at both ends, so that the rotor assembly 800 can rotate in the stator assembly 100.

Fig. 1 is an exploded schematic structural diagram of a motor 1000 according to an embodiment, and it can be understood that the first end cap 200 is matched with the opening 120 of the plastic package housing 110, so that the first end cap 200 can cover the opening 120, and the second end cap 300 and the plastic package housing 110 are formed into an integral structure by injection molding, so that the first end cap 200 and the second end cap 300 are respectively located at two ends of the plastic package housing 110 along an axial direction. In the embodiment, the first end cap 200 and the second end cap 300 are both metal members, and the conductive member 500 is used to connect the first end cap 200 and the second end cap 300, so that the first end cap 200 and the second end cap 300 are electrically connected, and the conductive member 500 is disposed on an outer sidewall of the plastic package housing 110.

It should be noted that, in the embodiment, the first end cap 200 is connected to the second end cap 300 through the conductive member 500, so that the equivalent capacitance of the motor 1000 can be reduced, thereby reducing the shaft voltage, achieving the purpose of reducing the electric corrosion, being beneficial to improving the service life of the bearing 810, and enabling the motor 1000 to operate stably and reliably.

Specifically, the conductive member 500 is made of a conductive metal material, and is a strip-shaped plate, the conductive member 500 is disposed on the outer side wall of the plastic package housing 110, the upper end of the conductive member 500 extends to the end face position of the opening 120 along the outer side wall of the plastic package housing 110, the end of the conductive member 500 is fixed on the end face and cannot enter the plastic package housing 110, and the conductive member 500 is prevented from affecting the sealing performance between the first end cap 200 and the plastic package housing 110 due to penetrating through the side wall of the plastic package housing 110. In addition, the lower end of the conductive member 500 extends along the outer side wall of the plastic package housing 110 and is connected with the second end cap 300, the lower end of the conductive member 500 cannot enter the plastic package housing 110, and the second end cap 300 and the plastic package housing 110 are integrally formed through injection molding, so that the structure is stable and reliable, and the sealing performance is high. The electrical connection between the conductive member 500 and the second end cap 300 may be performed in various manners, such as riveting, crimping, etc., without limitation.

It can be understood that the application environment of the motor 1000 is more and more extensive, and the reliability of the motor 1000 in operation in a harsh environment should be more concerned in the design process of the motor 1000, and particularly, under the working conditions such as rain, the problem that water is likely to enter the wire outlet position of the motor 1000 is likely to occur, so that the performance of the motor 1000 is reduced or even the motor 1000 cannot work normally. In view of the above problems, the embodiment of the present invention optimizes the assembly structure of the wire fixing clip 600 and the wire passing groove 140, effectively improves the sealing performance of the motor 1000, reduces the occurrence of water inflow in the motor 1000, and improves the operation reliability of the motor 1000.

Specifically, the wire fixing clip 600 of the embodiment is an elastic member, and is preferably made of an elastic material, and the wire fixing clip 600 may clamp and fix the wire, for example, the wire fixing clip 600 may be divided into an upper portion and a lower portion to clamp the wire, or the wire may be inserted into the wire fixing clip 600. In the embodiment shown in fig. 1, a plurality of wires form a wire harness 700, the wire harness 700 is connected into a whole through a wiring terminal, and a wire fixing clip 600 fixes each wire, so that the whole wire harness 700 is positioned. The wire fixing clip 600 is installed in the wire passing groove 140, and the wire fixing clip 600 is deformed and tightly attached to the inner wall of the wire passing groove 140 to form sealing by extruding the wire fixing clip 600, so that the wire fixing clip 600 and the plastic package shell 110 are effectively sealed, and the wire fixing clip 600 can fix the wire harness 700 and also play a role in sealing.

Referring to fig. 2 and 3, an end surface of the plastic package housing 110 at the opening 120 is a first end surface 131, an end surface of the wire fixing clip 600 facing the end cover is a second end surface 610, in an axial direction of the stator assembly 100, a height of the wire fixing clip 600 is greater than a height of the wire passing groove 140, the wire fixing clip 600 is assembled in the wire passing groove 140, and the second end surface 610 protrudes relative to the first end surface 131, that is, a height difference exists between the second end surface 610 and the first end surface 131. Therefore, the interference magnitude exists between the first end cover 200 and the wire fixing clamp 600, the hardness of the wire fixing clamp 600 is smaller, when the first end cover 200 covers the opening 120, the first end cover 200 extrudes the second end face 610 of the wire fixing clamp 600, the wire fixing clamp 600 deforms under the action of pressure, and the wire fixing clamp 600 can extrude the inner wall of the wire passing groove 140 to the periphery, so that the wire fixing clamp 600 is attached to the contact surface of the wire passing groove 140 more tightly, an effective sealing structure is formed, the sealing performance between the wire fixing clamp 600 and the stator assembly 100 is improved, the risk of water inflow of the motor 1000 at the position of the wire passing groove 140 is effectively reduced, and the operation reliability of the motor 1000 is improved.

Referring to fig. 1 and 2, in some embodiments, an annular flange 130 is disposed at the opening 120 of the plastic package housing 110, the first end face 131 is disposed on an axial surface of the flange 130, an edge of the first end cap 200 is bent along a circumferential direction to form an annular mounting groove 210, and the flange 130 is in interference fit with the mounting groove 210, so that the first end cap 200 is connected with the flange 130 for fastening, thereby enabling the first end cap 200 to be quickly assembled to the stator assembly 100. Fig. 4 is a schematic cross-sectional view of a motor 1000 according to an embodiment, and it can be understood from fig. 4 that, after the first end cap 200 is assembled in place, the bottom surface of the mounting groove 210 abuts against the second end surface 610, and the wire fixing clip 600 is deformed under pressure to form a seal with the plastic package housing 110.

Referring to fig. 1, in some embodiments, a sealing member 400 is disposed between the first end cap 200 and the first end surface 131, and the sealing member 400 is made of silicone or rubber. During assembly, the sealing member 400 is pre-installed in the installation groove 210, the first end cap 200 is covered on the opening 120, the flange 130 is correspondingly inserted into the installation groove 210, the first end cap 200 is pressed, the depth of the flange 130 pressed into the installation groove 210 is controlled, the upper surface and the lower surface of the sealing member 400 are pressed, the lower surface of the sealing member 400 is tightly attached to the first end surface 131 and the second end surface 610, pressure generated by pressing the first end cap 200 acts on the first end surface 131 and the second end surface 610 through the sealing member 400, wherein the second end surface 610 deforms the wire fixing clip 600 when pressed, so that effective sealing is formed between the first end cap 200 and the stator assembly 100 and between the wire fixing clip 600 and the stator assembly 100, and the sealing effect is better. It should be noted that, the first end cap 200 is interference-assembled with the flange 130 of the plastic package housing 110, so as to further limit the wire fixing clip 600, and improve the stability of the overall structure.

The wire fixing clip 600 of the embodiment is made of silicone or rubber material, and can provide better sealing performance. The wire fixing clamp 600 made of silica gel is taken as an example for explanation, the wire fixing clamp 600 and the wire harness 700 can form an integrated structure through an injection molding process, specifically, in the injection molding process, the wire harness 700 is firstly placed into an injection mold cavity, the wire fixing clamp 600 wraps the wire harness 700 when being formed in the mold cavity, so that the wire fixing clamp 600 and the wire harness 700 are sealed, adjacent electric wires are separated, high sealing performance is achieved between each electric wire and the wire fixing clamp 600, the wire fixing clamp 600 and the wire harness 700 are assembled conveniently after being integrally formed, and the assembling efficiency is improved. In addition, after the wire harness 700 and the wire fixing clip 600 are injection molded, an end of the wire harness 700 facing the inside of the stator assembly 100 needs to protrude a certain size from the wire fixing clip 600 to ensure the manufacturability of soldering the wire harness 700 to a circuit board.

Referring to fig. 3, it should be noted that, in the embodiment, the protruding height of the second end surface 610 relative to the first end surface 131 is h, which satisfies: h is more than or equal to 0.5mm, that is, the height difference between the first end surface 131 and the second end surface 610 needs to be more than or equal to 0.5mm, so that the first end cover 200 can generate enough extrusion force on the wire fixing clamp 600, and the sealing performance is improved. It can be understood that fig. 3 is a schematic view of the unassembled first end cap 200, in which the second end face 610 protrudes from the first end face 131, when the first end cap 200 and the sealing member 400 are assembled in place, the second end face 610 is pressed to be deformed, and the second end face 610 is shifted downward, and if the height of the second end face 610 protruding from the first end face 131 is too small, the second end face 610 is easily shifted to be flush with the first end face 131, and the amount of deformation generated by the wire fixing clip 600 is too small, so that the sealing performance between the wire fixing clip 600 and the wire passing groove 140 is affected.

In some embodiments, the modulus of elasticity of the wire clamp 600 is e, and satisfies 1.2MPa ≦ e ≦ 5.4 MPa. It will be appreciated that the elastic member is deformed by an external force applied to the elastic member, and the modulus of elasticity is understood to be the stress divided by the strain in that direction in the state of unidirectional stress. In the elastic deformation stage of the material, the stress and the strain of the material are in a proportional relation, the proportional coefficient is called elastic modulus, the index of the difficulty degree of the material in elastic deformation can be measured according to the elastic modulus, the larger the value of the proportional coefficient is, the larger the stress of the material in certain elastic deformation is, namely the larger the rigidity of the material is, the smaller the elastic deformation is under the action of certain stress, and the index of the material in resisting the elastic deformation can be reflected. The elastic modulus of the wire fixing clip 600 is set to meet the condition that e is more than or equal to 1.2MPa and less than or equal to 5.4MPa, so that the wire fixing clip 600 has better elastic deformation capability, and the wire fixing clip 600 is more tightly combined with the plastic package shell 110 under the condition of being extruded. The wire-fixing clip 600 may be made of silica gel or rubber, and the specific elastic modulus value may be selected according to different materials and application sealing requirements.

In some embodiments, the wire clamp 600 has a hardness of c, satisfying: c is more than or equal to 30HA and less than or equal to 70 HA. It can be understood that the compression resistance of the wire fixing clip 600 can be reflected by hardness, the smaller the hardness is, the more easily the wire fixing clip 600 deforms, whereas the larger the hardness is, the less easily the wire fixing clip 600 deforms, and the too small or too large hardness affects the sealing performance between the wire fixing clip 600 and the plastic package housing 110. Further, as shown in fig. 4, when the wire fixing clip 600 deforms, the side wall of the wire fixing clip 600 and the side wall of the mounting groove 210 form a too hard fit combination force, and the combination force of the wire fixing clip 600 and the first end cap 200 changes due to different hardness.

Taking the wire fixing clip 600 made of silicone material as an example for description, it can be understood in conjunction with fig. 9 that, in the embodiment, the hardness value of shore hardness is taken as a reference value, and the preferred hardness is in the range of 30HA to 70HA, and under the condition that the wire fixing clip 600 meets the above hardness range, the binding force between the wire fixing clip 600 and the first end cap 200 can reach 1000N to 2000N, so that the assembly is more stable, and the sealing effect is better.

Referring to fig. 5, the edge of one side of the wire fixing clip 600 extends outward to form a first limiting portion 620, the edge of the other side of the wire fixing clip 600 extends outward to form a second limiting portion 630, wherein the first limiting portion 620 is fastened to the outer side wall of the plastic package casing 110, the second limiting portion 630 is fastened to the inner side wall of the plastic package casing 110, so that the wire fixing clip 600 is limited along the radial direction of the stator assembly 100, a first groove 640 is formed between the first limiting portion 620 and the second limiting portion 630, the bottom surface of the first groove 640 is attached to the inner wall of the wire passing groove 140, and the stability of the assembly structure of the wire fixing clip 600 is improved.

It should be noted that the first limiting portion 620 and the second limiting portion 630 are substantially plate-shaped and are formed integrally with the wire fixing clip 600 by injection molding, and both the first limiting portion 620 and the second limiting portion 630 are tightly attached to the side wall of the plastic package casing 110, so that a certain sealing effect is achieved, and the sealing performance between the wire fixing clip 600 and the plastic package casing 110 is improved.

Referring to fig. 6 and 8, a second groove 112 is formed in the inner side wall of the plastic package housing 110 at a position close to the wire passing groove 140, and the second groove 112 extends along the edge of the wire passing groove 140. When the wire fixing clip 600 is inserted into the wire passing groove 140, the second limiting portion 630 is correspondingly fitted into the second groove 112. Along stator module 100's radial, the thickness of the spacing portion 630 of second is less than the degree of depth of second recess 112, makes spacing portion 630 of second can not bulge in the inside wall of plastic envelope casing 110, does not occupy stator module 100's inner space, and the structure is more reasonable.

In an embodiment, a first chamfer structure 141 is arranged between an inner wall of the wire passing groove 140 and an outer side wall of the plastic package casing 110, a second chamfer structure 142 is arranged between the inner wall of the wire passing groove 140 and the inner side wall of the plastic package casing 110, that is, the inner wall of the wire passing groove 140 is in transition connection with the outer side wall of the plastic package casing 110 through the first chamfer structure 141, the inner wall of the wire passing groove 140 is in transition connection with the inner side wall of the plastic package casing 110 through the second chamfer structure 142, the wire fixing clip 600 is assembled into the wire passing groove 140, the inner wall of the first groove 640 is attached to the inner wall of the wire passing groove 140, the first chamfer structure 141 and the second chamfer structure 142 are beneficial to improving the sealing performance of corner positions, and the sealing effect is better.

Referring to fig. 6 and 7, in some embodiments, a slot 132 is disposed on the first end surface 131, the slot 132 extends from the first end surface 131 along an axial direction of the stator assembly 100, the slot 132 is spaced apart from an inner sidewall of the plastic package housing 110, and an upper end of the conductive member 500 is fastened in the slot 132, so that the conductive member 500 is connected to the first end surface 131 and can be fixed without extending into the stator assembly 100. It can be understood that, when the conductive device 500 is assembled in place, the conductive device 500 is bent and buckled on the sidewall of the slot 132, the first end cap 200 presses the sealing element 400, so that the sealing element 400 can press the upper end of the conductive device 500, and the upper end of the conductive device 500 is fastened in the slot 132, thereby the structure is stable and reliable, the conductive device 500 is effectively prevented from being separated from the slot 132, and the sealing element 400 and the conductive device 500 are effectively sealed, so that the risk of water entering between the sealing element 400 and the conductive device 500 is reduced.

Referring to fig. 1, it can be understood that the conductive device 500 includes a first bending section 510 and a second bending section 520, the first bending section 510 extends from the outer sidewall of the plastic package housing 110 to the clamping groove 132 in a bending manner, the first bending section 510 covers a portion of the first end surface 131 along the radial direction, and in consideration of a certain thickness of the conductive device 500, a recessed portion corresponding to the first bending section 510 is disposed on the first end surface 131, and the first bending section 510 extends into the clamping groove 132 along the recessed portion, so that the first bending section 510 does not protrude from the first end surface 131 after being assembled in place, and thus when the sealing member 400 abuts against the first end surface 131, the influence of the first bending section 510 on the sealing member 400 is reduced, which is beneficial to maintaining the stability of the seal between the sealing member 400 and the first end surface 131. The sealing member 400 can form an effective seal between the first end cover 200 and the first end surface 131 along the circumferential direction of the stator assembly 100, and the sealing performance requirement under severe working conditions is met.

It should be noted that, the outer side wall of the plastic package housing 110 is provided with a receiving groove 111 for fixing the conductive component 500, the receiving groove 111 extends along the axial direction of the stator assembly 100, the conductive component 500 is assembled in the receiving groove 111, and two ends of the conductive component 500 are respectively connected to the first end cap 200 and the second end cap 300, so that the stability of the assembly structure of the conductive component 500 can be improved.

Referring to fig. 1, the end of the first bending section 510 extends and bends to form a second bending section 520, the second bending section 520 is located in the clamping groove 132 and is in interference fit with the clamping groove 132, specifically, the first bending section 510 is U-shaped and is located at a concave portion, the second bending section 520 is U-shaped, two ends of the second bending section 520 respectively abut against two side walls of the clamping groove 132, so that the second bending section 520 and the clamping groove 132 achieve the purpose of interference fit, the conductive member 500 is fixed without being matched with an additional connecting member, and the conductive member 500 is fixed by glue bonding and other methods, the stability of the installation structure of the conductive member 500 is further improved, and the assembly is simple, convenient and rapid.

In addition, the conductive member 500 is provided with a protruding elastic sheet 530, and the elastic sheet 530 is located at the outer side of the plastic package housing 110 and abuts against the side wall of the mounting groove 210, so that the conductive member 500 is electrically connected to the first end cap 200. It can be understood that one end of the elastic piece 530 is connected to the main body of the conductive member 500, and the other end of the elastic piece 530 extends and protrudes out of the surface of the conductive member 500, so that the elastic piece 530 has certain elasticity, and the elastic piece 530 is integrally formed with the conductive member 500. During assembly, the upper end of the conductive sheet is fastened in the fastening groove 132, and then the first end cap 200 is pressed into the flange 130, when the first end cap 200 compresses the conductive piece 500, the elastic sheet 530 is pressed to deform and abuts against the side wall of the mounting groove 210, so that stable conductivity between the conductive piece 500 and the first end cap 200 is ensured.

An embodiment of the present invention further provides an electrical apparatus (not shown in the drawings), which may be a household appliance such as an air conditioner, and which employs the motor 1000 of the above-described embodiment as a driving part.

Specifically, the stator assembly 100 of the motor 1000 forms the plastic package housing 110 through injection molding, and the first end cap 200 and the second end cap 300 at the two ends of the stator assembly 100 are connected by using the conductive member 500, so that the equivalent capacitance of the motor 1000 can be reduced, the shaft voltage can be reduced, the purpose of reducing the electric corrosion can be achieved, and the service life of the bearing 810 can be prolonged; the wire passing groove 140 is formed in the opening 120 of the plastic package shell 110, the elastic wire fixing clamp 600 is arranged in the wire passing groove 140, wires led out from the wire passing groove 140 can be fixed through the wire fixing clamp 600, when the wire fixing clamp 600 is assembled in the wire passing groove 140, the second end face 610 of the wire fixing clamp 600 is higher than the first end face 131 of the plastic package shell 110, the first end cover 200 covers the opening 120 to extrude the second end face 610, the wire fixing clamp 600 is deformed, the wire fixing clamp 600 is tightly attached to the contact face of the wire passing groove 140, effective sealing is formed, sealing performance between the wire fixing clamp 600 and the stator assembly 100 is improved, the problem that water easily enters the wire outlet position of the motor 1000 under a severe working condition is effectively solved, operation reliability of the motor 1000 is improved, and operation of electrical equipment is more stable.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. An electric machine, comprising:

the stator assembly comprises a plastic package shell, wherein one end of the plastic package shell along the axial direction of the stator assembly is opened to form an opening, the end face of the plastic package shell positioned at the opening is a first end face, and the side wall of the plastic package shell is provided with a wire passing groove extending from the first end face along the axial direction of the stator assembly;

the end cover is covered at the opening;

2. The electric machine of claim 1, wherein the second end face protrudes a height h relative to the first end face such that: h is more than or equal to 0.5 mm.

3. The motor according to claim 1, wherein a first limiting portion fastened to the outer side wall of the plastic package housing is disposed on one side of the wire fixing clip in a radial direction of the stator assembly, and a second limiting portion fastened to the inner side wall of the plastic package housing is disposed on the other side of the wire fixing clip.

4. The motor of claim 3, wherein a first groove is formed between the first limiting portion and the second limiting portion, and a bottom surface of the first groove is attached to an inner wall of the wire passing groove.

5. The motor of claim 3, wherein a second groove for accommodating the second limiting portion is formed in a position, close to the wire passing groove, of an inner side wall of the plastic package housing, and the thickness of the second limiting portion is smaller than the depth of the second groove along the radial direction of the stator assembly.

6. The motor according to any one of claims 1 to 5, wherein a first chamfer structure is provided between the inner wall of the wire passing groove and the outer side wall of the plastic package housing, and a second chamfer structure is provided between the inner wall of the wire passing groove and the inner side wall of the plastic package housing.

7. The electric machine of claim 1 wherein a plurality of said wires are arranged to form a wire harness, said wire clamp being injection molded as a unitary structure with said wire harness.

8. The motor according to claim 1 or 7, wherein the wire-fixing clips are made of silicone or rubber.

9. The electric machine of claim 1, wherein the modulus of elasticity of the wire clamp is e, satisfying: e is more than or equal to 1.2MPa and less than or equal to 5.4 MPa.

10. The electric machine of claim 1, wherein the hardness of the wire clamp is c, satisfying: c is more than or equal to 30HA and less than or equal to 70 HA.

11. The motor of claim 1, wherein the plastic package housing is provided with an annular flange at the opening, the end cap is provided with a mounting groove in interference fit with the flange, the first end surface is formed on the surface of the flange along the axial direction of the stator assembly, and a sealing member is arranged between the groove bottom of the mounting groove and the first end surface.

12. The motor of claim 1, wherein the motor comprises a conductive member, the end cap is a first end cap, the other end of the stator assembly away from the first end cap is provided with a second end cap, one end of the conductive member is electrically connected with the first end cap, the other end of the conductive member extends along the axial direction of the plastic package casing and is electrically connected with the second end cap.

13. Electrical apparatus, characterized in that it comprises an electrical machine according to any one of claims 1 to 12.