Motor and air conditioner with same

Abstract

The motor comprises a rotor assembly, a stator assembly, a plastic-coated shell and a bearing end cover, and the stator assembly is located on the radial outer side of the rotor assembly; the plastic-coated shell is arranged outside the stator assembly, the plastic-coated shell and the stator assembly are integrally formed, the plastic-coated shell comprises a body and a matching part arranged on the axial end face of the body in a protruding mode, and the matching part is arranged on the radial inner side of the body; the bearing end cover comprises a cover body, the cover body is located in the matching part, and the outer circumferential wall of the cover body is matched with the inner circumferential wall of the matching part to be used for blocking the space in the matching part. According to the motor provided by the utility model, the material consumption of the matching part is less, the mass of the matching part can be reduced, and the manufacturing cost of the matching part is reduced. And meanwhile, the diameter of the outer peripheral wall of the cover body of the bearing end cover matched with the matching part is small, and the material consumption required by the bearing end cover is small, so that the manufacturing cost of the bearing end cover is reduced, and the cost of the material of the plastic-coated shell is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and particularly relates to a motor and an air conditioner having the same. Background Art

[0002] In related technologies, as an important device for converting electrical energy into mechanical energy, motors play a key role in multiple fields such as compressors, refrigeration equipment, and household appliances. Generally, a plastic-coated shell is provided on the motor to play an insulating and protective role, and the installation structure is provided on the plastic-coated shell. However, the overall manufacturing cost of the motor is relatively high, and the weight is relatively heavy. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a motor, and the manufacturing cost of the motor is relatively low and the weight is relatively light.

[0004] The utility model further provides an air conditioner, and the air conditioner includes the above-mentioned motor.

[0005] The motor according to an embodiment of the utility model includes a rotor assembly, a stator assembly, a plastic-coated shell, and a bearing end cover. The stator assembly is located radially outside the rotor assembly. The plastic-coated shell is provided outside the stator assembly and is integrally formed with the stator assembly. The plastic-coated shell includes a main body and a matching portion protruding from an axial end face of the main body. The matching portion is located radially inside the main body. The bearing end cover includes a cover body. The cover body is located inside the matching portion, and an outer peripheral wall of the cover body is matched with an inner peripheral wall of the matching portion to block a space inside the matching portion.

[0006] For the motor according to an embodiment of the utility model, by matching the outer peripheral wall of the cover body of the bearing end cover with the inner peripheral wall of the matching portion of the plastic-coated shell to block the space inside the matching portion, the bearing end cover can better protect the stator assembly and the bearing provided inside the plastic-coated shell, avoiding dust, liquid, oil, and other impurities from entering the inside of the stator assembly or the bearing, thereby prolonging the service life of the motor. And compared with the bearing end cover being sleeved on the radial outside of the matching portion, the matching of the outer peripheral wall of the cover body with the inner peripheral wall of the matching portion makes the material usage of the matching portion less when the wall thickness of the matching portion is the same, which can reduce the mass of the matching portion and the manufacturing cost of the matching portion. At the same time, the diameter of the outer peripheral wall of the cover body of the bearing end cover matched with the matching portion is smaller, and the material usage required for the bearing end cover is also less, reducing the manufacturing cost of the bearing end cover, thereby achieving cost reduction of the material of the plastic-coated shell.

[0007] In addition, for the motor according to the utility model, the following additional technical features may also be provided:

[0008] In some embodiments, the bearing end cover further includes a flange provided on the outer peripheral edge of the cover body. The flange is located on the side of the fitting portion away from the body and is in contact with the axial end face of the fitting portion away from the body.

[0009] In some embodiments of the present utility model, a fillet is provided between the outer peripheral wall of the fitting portion and the axial end face of the body facing the fitting portion; and / or, in the direction from the fitting portion to the body, the outer peripheral wall of the fitting portion is inclined in a direction away from the axis of the fitting portion.

[0010] In some embodiments of the present utility model, the plastic-coated shell further includes mounting ears provided on the outer peripheral wall of the body. The mounting ears are multiple and spaced apart along the circumferential direction of the body, and the mounting ears have mounting holes axially penetrating through the mounting ears.

[0011] In some embodiments of the present utility model, one side surface of the mounting ear along the axial direction of the body is a mounting surface and is flush with the axial end face on the same side of the body. In the radially outward direction of the body, the side surface of the mounting ear facing away from the mounting surface is inclined towards the mounting surface.

[0012] In some embodiments of the present utility model, the plastic-coated shell further includes a lead wire portion. The fitting portion and the lead wire portion are provided on the same end face in the axial direction of the body. The lead wire portion is located radially outside the fitting portion. The plastic-coated shell further includes a lead pin axially penetrating through the lead wire portion along the axial direction of the body for connecting a power supply line and the winding wire of the stator assembly.

[0013] In some embodiments of the present utility model, a first stop groove is provided on the side of the lead wire portion facing away from the body. The first stop groove extends along the edge of the lead wire portion. The lead pin is located inside the first stop groove. One side of the first stop groove facing away from the axis of the body has an opening for leading out the power supply line.

[0014] In some embodiments of the present utility model, the plastic-coated shell further includes a cover plate covering the side of the lead wire portion facing away from the body. A second stop groove is provided on the side of the cover plate facing the lead wire portion. The second stop groove extends along the edge of the cover plate and is located outside the first stop groove and is in contact with the outer peripheral wall of the first stop groove.

[0015] In some embodiments of the present utility model, a wire groove is provided on the side of the lead wire portion facing away from the body. The wire groove is adjacent to the opening and one end is communicated with the opening, and the other end extends towards the lead pin. A part of the power supply line is adapted to be located in the wire groove.

[0016] In some embodiments of the present utility model, a water-blocking boss is provided on a side of the lead-out wire portion facing away from the body. The water-blocking boss extends along the width direction of the opening and is spaced from the opening in the radial direction of the body.

[0017] The air conditioner according to an embodiment of the present utility model includes the above-mentioned motor.

[0018] In the air conditioner according to an embodiment of the present utility model, by fitting the outer peripheral wall of the cover body of the bearing end cover with the inner peripheral wall of the fitting portion of the plastic-coated shell to block the space inside the fitting portion, the bearing end cover can better protect the stator assembly and the bearing provided inside the plastic-coated shell, preventing dust, liquid, oil, and other impurities from entering the inside of the stator assembly or the bearing, thereby extending the service life of the motor. And relative to the bearing end cover being sleeved on the radial outside of the fitting portion, the fitting of the outer peripheral wall of the cover body with the inner peripheral wall of the fitting portion enables the material usage of the fitting portion to be less when the wall thickness of the fitting portion is the same, which can reduce the mass of the fitting portion and the manufacturing cost of the fitting portion. At the same time, the diameter of the outer peripheral wall of the cover body of the bearing end cover that fits with the fitting portion is smaller, and the material usage required for the bearing end cover is also less, reducing the manufacturing cost of the bearing end cover, thereby achieving cost reduction of the material of the plastic-coated shell.

[0019] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0020] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0021] Figure 1 is a cross-sectional view of the motor according to an embodiment of the present utility model;

[0022] Figure 2 is Figure 1 an enlarged view of part A in

[0023] Figure 3 is Figure 1 an enlarged view of part B in

[0024] Figure 4 is a front view of the stator assembly according to an embodiment of the present utility model;

[0025] Figure 5 is a front view of the stator assembly according to an embodiment of the present utility model with the cover plate removed;

[0026] Figure 6 is a rear view of the motor according to an embodiment of the present utility model from other angles.

[0027] Reference Numerals:

[0028] 100, Electric Motor;

[0029] 1, Plastic Coated Housing; 11, Body; 12, Fitting Portion; 13, Lead Wire Portion; 131, First Stopper; 132, Opening; 133, Wire Groove; 134, Positioning Projection; 135, Water Blocking Projection; 14, Mounting Ear; 141, Mounting Surface; 142, Mounting Hole; 143, Notch; 144, First Groove; 145, Second Groove;

[0030] 2, Lead Pin;

[0031] 3, Cover Plate; 31, Second Stopper; 32, Stopping Projection;

[0032] 200, Stator Assembly;

[0033] 4, Stator Component;

[0034] 5, Rotor Component; 51, Rotor Core; 52, Rotor Magnet;

[0035] 6, Rotating Shaft;

[0036] 7, Bearing End Cover; 71, Cover Body; 72, Flange; 73, Fillet; 74, Reinforcing Rib; 741, First Reinforcing Rib; 742, Second Reinforcing Rib. Detailed Embodiment

[0037] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0039] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0040] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] The motor 100 according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0042] As Figure 1 shown, the motor 100 according to an embodiment of the present utility model includes a rotor assembly 5, a stator assembly 4, a plastic-coated shell 1, and a bearing end cover 7.

[0043] Specifically, as Figure 1 shown, the plastic-coated shell 1 includes a body 11 and a mating portion 12 protruding from the body 11. The stator assembly 4 is located radially outside the rotor assembly 5. The rotor assembly 5 is rotatably disposed within the stator assembly 4. A rotating shaft 6 passes through the rotor assembly 5 and is connected to the rotor assembly 5. One end of the rotating shaft 6 extends from the side of the body 11 facing away from the mating portion 12. The rotor assembly 5 includes a rotor core 51 and rotor magnets 52. The rotor magnets 52 can be permanent magnets or electromagnets. After the stator assembly 4 is energized, a rotating magnetic field can be generated. The rotor magnets 52 can respond to the rotating magnetic field generated by the stator assembly 4, generate magnetic force, and cause the rotor core 51 to rotate, thereby providing torque to drive the rotating shaft 6 to rotate.

[0044] The stator assembly 4 includes a stator core and a stator winding. The stator winding is wound around the stator core. When the stator winding is energized, the stator core can generate a rotating magnetic field.

[0045] The plastic-coated shell 1 is disposed outside the stator assembly 4 and is integrally formed with the stator assembly 4. The plastic-coated shell 1 and the stator assembly 4 form a stator assembly 200. The stator assembly 4 is disposed within the plastic-coated shell 1. The plastic-coated shell 1 can be formed by coating an insulating material outside the stator assembly 4 through processes such as injection molding. The plastic-coated shell 1 has insulation and protection functions, can enhance the mechanical strength of the stator assembly 200, and improve the electrical performance and safety of the stator assembly 200.

[0046] Further, as Figure 1 shown, the plastic-coated housing 1 includes a body 11 and a mating portion 12 protruding from the body 11. The mating portion 12 is disposed on the radially inner side of the body 11 and is used to cooperate with the bearing end cover 7.

[0047] Furthermore, as Figure 1 and Figure 3 shown, the bearing end cover 7 includes a cover body 71. The cover body 71 is located within the mating portion 12, and the outer peripheral wall of the cover body 71 cooperates with the inner peripheral wall of the mating portion 12 to seal the space within the mating portion 12. The bearing end cover 7 can better protect components such as the bearing disposed within the plastic-coated housing 1, preventing dust, liquid, oil, and other impurities from entering the interior of components such as the bearing, protecting components such as the bearing from the external environment, helping to reduce wear and corrosion within components such as the bearing, and thus extending the service life of the stator assembly 200.

[0048] It can be understood that a mating stop is provided in the area of the mating portion 12 that cooperates with the cover body 71 for cooperation with the cover body 71. Relative to the bearing end cover 7 being sleeved on the radially outer side of the mating portion 12, the outer peripheral wall of the cover body 71 cooperating with the inner peripheral wall of the mating portion 12 causes the mating stop to be provided on the inner peripheral wall of the mating portion 12. When the wall thickness of the mating portion 12 is the same, the material usage of the mating stop is less, which can reduce the mass of the mating portion 12 and lower the manufacturing cost of the mating portion 12. At the same time, the diameter of the outer peripheral wall of the cover body 71 of the bearing end cover 7 that cooperates with the mating portion 12 is smaller, and the material usage required for the bearing end cover 7 is also less, reducing the manufacturing cost of the bearing end cover 7, thereby achieving cost reduction of the material of the plastic-coated housing 1.

[0049] For the motor 100 according to the embodiment of the present invention, by using the outer peripheral wall of the cover body 71 of the bearing end cover 7 to cooperate with the inner peripheral wall of the mating portion 12 of the plastic-coated housing 1 to seal the space within the mating portion 12, the bearing end cover 7 can better protect the stator assembly 4 and the bearing disposed within the plastic-coated housing 1, preventing dust, liquid, oil, and other impurities from entering the interior of the stator assembly 4 or the bearing, thereby extending the service life of the motor 100. And relative to the bearing end cover 7 being sleeved on the radially outer side of the mating portion 12, the outer peripheral wall of the cover body 71 cooperating with the inner peripheral wall of the mating portion 12 causes the material usage of the mating portion 12 to be less when the wall thickness of the mating portion 12 is the same, which can reduce the mass of the mating portion 12 and lower the manufacturing cost of the mating portion 12. At the same time, the diameter of the outer peripheral wall of the cover body 71 of the bearing end cover 7 that cooperates with the mating portion 12 is smaller, and the material usage required for the bearing end cover 7 is also less, reducing the manufacturing cost of the bearing end cover 7, thereby achieving cost reduction of the material of the plastic-coated housing 1.

[0050] In this embodiment, the overmolded shell 1 and the bearing end cover 7 are made of plastic material, such as BMC (Bulk Molding Compound, thermosetting bulk molding compound) and the like.

[0051] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, the bearing end cover 7 also includes a flange 72, which is arranged on the outer periphery of the cover body 71. The flange 72 is located on the side of the matching portion 12 away from the body 11 and is in contact with the axial end surface of the matching portion 12 away from the body 11. The flange 72 can limit the cover body 71. After the cover body 71 extends into the selected position in the matching portion 12, the bearing end cover 7 can be prevented from completely entering the matching portion 12, so that the matching position of the cover body 71 can be more reliable.

[0052] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, a fillet 73 is provided between the outer peripheral wall of the mating portion 12 and the axial end face of the main body 11 facing the mating portion 12, which can increase the connection wall thickness of the connection position between the mating portion 12 and the main body 11, improve the connection strength of the connection position between the mating portion 12 and the main body 11, avoid stress concentration at the connection position between the mating portion 12 and the main body 11 when force is applied, and avoid breaking the connection position between the mating portion 12 and the main body 11.

[0053] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, in the direction from the mating portion 12 to the body 11 (as shown Figure 1 In the direction a shown in FIG. 1 , the outer peripheral wall of the matching portion 12 is inclined toward the direction away from the axis of the matching portion 12. The wall thickness of the matching portion 12 close to the body 11 is relatively large, which can ensure the connection strength of the connection position of the matching portion 12 and the body 11, avoid stress concentration at the connection position of the matching portion 12 and the body 11 when the force is applied, and avoid the connection position of the matching portion 12 and the body 11 from being broken. In addition, the wall thickness of the opening 132 is thin, and the size of the outer peripheral wall of the matching portion 12 away from the body 11 is relatively small, which can reduce the radial space occupied by the matching portion 12.

[0054] In some embodiments of the present invention, Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, the plastic-coated housing 1 further includes mounting ears 14 which are provided on the outer peripheral wall of the body 11 and are used for fixing and installation. The mounting ears 14 are multiple and spaced apart in the circumferential direction of the body 11. The multiple mounting ears 14 can form multiple mounting positions in the circumferential direction of the body 11, so that the stator assembly 200 provided with the plastic-coated housing 1 can be fixedly installed at multiple positions in the circumferential direction of the body 11, thereby enhancing the connection stability between the stator assembly 200 and the connected part. At the same time, the force between the plastic-coated housing 1 and the connected part can be dispersed to multiple mounting ears 14, thereby reducing the stress generated on each mounting ear 14, reducing the risk of damage to the mounting ears 14, and extending the service life of the plastic-coated housing 1.

[0055] Further, as Figure 6 shown, the mounting ear 14 has a mounting hole 142 that penetrates the mounting ear 14 in the axial direction of the body 11. The mounting hole 142 is used for fixing and installation, with a reasonable structural design, which can reduce the installation difficulty and cost. The operator only needs to fix according to the position of the mounting hole 142. At the same time, the mounting hole 142 can ensure that mounting parts such as fasteners are firmly fixed in the mounting position, reducing the risk of damage caused by vibration or impact. For example, the operator can pass a fastener such as a bolt that matches the mounting hole 142 through the mounting hole 142 to complete the fixing of the stator assembly 200 provided with the plastic-coated housing 1, and then complete the fixing and installation of the motor 100 including the stator assembly 200.

[0056] Furthermore, as Figure 6 shown, the mounting hole 142 has a notch 143, and the notch 143 is located at one end of the mounting ear 14 away from the body 11. The structure of the notch 143 is simple, easy to implement, and low in cost, which can provide convenience for installation and disassembly. The operator can put in or take out mounting parts such as fasteners from the notch 143, reducing the operation difficulty of installation and disassembly, and thus improving the installation and disassembly efficiency. On the other hand, the notch 143 can reduce the weight of the plastic-coated housing 1 without affecting the structural strength of the mounting ear 14, which is beneficial to the transportation and installation of the plastic-coated housing 1 and the stator assembly 200.

[0057] Further, as Figure 4 and Figure 5 shown, the mounting ear 14 is along the axial direction of the body 11 (such as Figure 1One side surface (in the a direction shown) is the mounting surface 141 and is flush with the axial end surface on the same side as the main body 11. It can be understood that when the stator assembly 200 provided with the plastic-coated shell 1 is used for the motor 100, the mounting ears 14 provided on the outer peripheral wall of the main body 11 can facilitate the fixation and installation of the motor 100. As shown in the figure and the example in the figure, along the axial direction of the main body 11, the axial end surface of the main body 11 on the same side as the mounting surface 141 of the mounting ear 14 is specifically the first end surface, and the first end surface is flush with the mounting surface 141.

[0058] Furthermore, as Figure 4 and Figure 5 shown, by setting the mounting surface 141 of the mounting ear 14 to be flush with the axial end surface on the same side as the main body 11, that is, the mounting surface 141 and the axial end surface on the same side as the main body 11 are a smooth plane without structures such as protrusions and corners. Compared with setting the mounting surface 141 of the mounting ear 14 at an interval from the axial end surface on the same side as the main body 11, it can effectively reduce the stress of the mounting ear 14 and reduce the risk of stress concentration at the mounting ear 14 during installation. It can improve the safety and reliability of the structure of the mounting ear 14 and extend its service life, thereby enhancing the structural stability and service life of the plastic-coated shell 1. At the same time, under the same stress requirements, when the mounting surface 141 of the mounting ear 14 is flush with the axial end surface on the same side as the main body 11, the thickness of the mounting ear 14 in the axial direction of the main body 11 can be reduced, thereby reducing the material consumption of the mounting ear 14 and further reducing the manufacturing cost of the plastic-coated shell 1.

[0059] Furthermore, in the radially outward direction of the main body 11 (such as the c direction shown in Figure 5 ), the side surface of the mounting ear 14 facing away from the mounting surface 141 is inclined towards the mounting surface 141. In the radially inward direction of the main body 11, the thickness of the mounting ear 14 in the axial direction of the main body 11 gradually increases, and the structural strength of the mounting ear 14 close to the main body 11 gradually increases. Thereby, the connection strength between the mounting ear 14 and the main body 11 can be enhanced, thereby improving the structural stability and reliability of the plastic-coated shell 1 and extending its service life.

[0060] Furthermore, as Figure 1 and Figure 4As shown, the mounting ear 14 is located at one end of the body 11 in the axial direction, and the surface of the mounting ear 14 at the other end away from the body 11 in the axial direction is the mounting surface 141. This facilitates the mounting surface 141 of the mounting ear 14 to be flush with the axial end surface on the same side of the body 11, and the reasonable structural arrangement is also convenient for processing, which can effectively reduce the risk of stress concentration at the mounting ear 14 during installation, improve the safety and reliability of the mounting ear 14 structure, and extend its service life, thereby improving the structural stability and service life of the overmolded shell 1. For example, as shown in the examples shown in Figures and Figures, the mounting ear 14 is provided at one end of the body 11 in the axial direction close to the first end surface, and the surface of the mounting ear 14 close to the first end surface is the mounting surface 141, and the first end surface is flush with the mounting surface 141.

[0061] In some embodiments of the present invention, Figure 6 As shown, the mounting ear 14 has a first groove 144 on the side surface facing away from the mounting surface 141, and the mounting hole 142 penetrates the bottom wall of the first groove 144 and is spaced apart from the side wall of the first groove 144. The first groove 144 can play a role of limiting and positioning, further facilitating the installation of the mounting ear 14. During the installation process, the first groove 144 can be used as a positioning reference, and can be used in conjunction with mounting parts such as gaskets and bolts, which helps to reduce installation errors and reduce the difficulty of operation for operators, thereby improving installation efficiency and quality.

[0062] In some embodiments of the present invention, Figure 6 As shown, the mounting ear 14 has a second groove 145 on the side surface facing away from the mounting surface 141, and the second groove 145 is connected to the first groove 144 and is located on the side of the first groove 144 close to the body 11. The position of the second groove 145 does not affect the fixed connection of the mounting ear 14, nor is it a key position that affects the structural strength of the mounting ear 14. Therefore, the weight of the overmolded shell 1 can be reduced without affecting the structural strength of the mounting ear 14, and it is convenient for transportation and installation. At the same time, the material consumption of the overmolded shell 1 can be reduced, thereby effectively reducing the manufacturing cost of the overmolded shell 1.

[0063] In some embodiments of the present invention, Figure 1 , Figure 2 and Figure 5As shown, the plastic-coated shell 1 further includes a lead wire portion 13. The mating portion 12 and the lead wire portion 13 are provided on the same end face in the axial direction of the body 11. The lead wire portion 13 is located radially outside the mating portion 12. The plastic-coated shell 1 further includes a lead pin 2. The lead pin 2 is axially disposed through the lead wire portion 13 along the body 11 for connecting the power line and the winding wire of the stator assembly 200. Among them, the power line is connected to one end of the lead pin 2 facing away from the stator assembly 4, and the winding wire of the stator assembly 200 is connected to one end of the lead pin 2 facing the stator assembly 4, so that the plastic-coated shell 1 does not need to be injection-molded with the power line, improving the manufacturability of the plastic-coated shell 1, reducing the defective rate of the plastic-coated shell 1, reducing the turnover difficulty of the plastic-coated shell 1, and improving the injection molding efficiency of the plastic-coated shell 1.

[0064] It can be understood that by making the lead wire portion 13 located radially outside the mating portion 12 and connecting the power line to the winding wire of the stator assembly 200 through the lead pin 2, the external placement of the power line can be realized. On the one hand, the power line is far away from the gap between the stator assembly 4 and the rotor assembly 5, realizing the isolation of the power line from the cavity defined by the body 11, reducing the risk of the power line being scratched by the rotor assembly 5, and at the same time avoiding additional designs such as sleeving heat shrink tubes on the power line or designing wire blocking posts on the plastic-coated shell 1 in the prior art, reducing the production and processing cost of the plastic-coated shell 1; on the other hand, it can avoid the solder flying everywhere when connecting the power line from entering the cavity defined by the body 11, avoiding problems such as blockage or the need for additional cleaning of the solder, so as to ensure the normal operation of the motor 100 and reduce the production and processing cost and maintenance cost of the motor 100.

[0065] In some embodiments of the present invention, such as Figure 1 、 Figure 2 and Figure 5 As shown, a first stop 131 is provided on the side of the lead wire portion 13 facing away from the body 11. The first stop 131 extends along the edge of the lead wire portion 13. The lead pin 2 is located inside the first stop 131. The setting of the first stop 131 can protect the lead pin 2 to a certain extent. There is an opening 132 for leading out the power line on the side of the first stop 131 facing away from the axis of the body 11, which can enable the power line to be led out along the radial direction of the body 11 instead of along the axial direction of the body 11, relatively reducing the occupation of the axial space of the plastic-coated shell 1 by the power line and facilitating the internal structural layout of the plastic-coated shell 1.

[0066] In a further embodiment of the present invention, such as Figure 1 、 Figure 2 and Figure 5As shown, the plastic-coated housing 1 further includes a cover plate 3. The cover plate 3 is disposed on the side of the lead wire portion 13 away from the body 11. The cover plate 3 and the lead wire portion 13 jointly define a placement space. Part of the lead pin 2 and the power cord are located in the placement space, so that the cover plate 3 can protect the lead pin 2 and the power cord. Further, referring to the appendix Figure 2 As shown, a second rabbet 31 is provided on the side of the cover plate 3 facing the lead wire portion 13. The second rabbet 31 extends along the edge of the cover plate 3 and is located outside the first rabbet 131 and fits with the outer peripheral wall of the first rabbet 131. Through the cooperation of the first rabbet 131 and the second rabbet 31, it is possible to prevent the cover plate 3 from being misaligned or having a step during assembly, ensuring the accuracy and stability of the assembly of the cover plate 3 and the lead wire portion 13, and to a certain extent preventing dust or other impurities from entering the interior of the placement space and avoiding the influence of dust or other impurities on the normal connection of the lead pin 2 and the power cord.

[0067] It should be noted that the second rabbet 31 is located outside the first rabbet 131, which can better protect the lead wire portion 13 and avoid reducing the placement space jointly defined by the lead wire portion 13 and the cover plate 3 due to the existence of the second rabbet 31, thereby ensuring the normal placement of the lead pin 2 and the power cord.

[0068] In a further embodiment of the present utility model, as Figure 1 、 Figure 2 and Figure 5 As shown, a wire groove 133 is provided on the side of the lead wire portion 13 away from the body 11. The wire groove 133 is adjacent to the opening 132 and one end is communicated with the opening 132, and the other end extends towards the lead pin 2. Part of the power cord is adapted to be located in the wire groove 133. The setting of the wire groove 133 can limit the power cord, so that the power cord extends along the extending direction of the wire groove 133, providing a basis for the neat wiring of the power cord and being beneficial to improving the reliability and manufacturability of the plastic-coated housing 1.

[0069] In a still further embodiment of the present utility model, as Figure 1 、 Figure 2 and Figure 5As shown, a positioning protrusion 134 is provided on the side of the lead wire portion 13 away from the main body 11. The positioning protrusion 134 is disposed adjacent to the opening 132, and the wire groove 133 is provided on the positioning protrusion 134. It can be understood that the setting of the positioning protrusion 134 has several advantages. First, the positioning protrusion 134 can enhance the structural strength of the lead wire portion 13 and ensure the structural reliability of the lead wire portion 13. Second, since the wire groove 133 is provided on the positioning protrusion 134, on the basis of ensuring the limiting effect of the wire groove 133 on the power cord, the inner bottom wall of the wire groove 133 can be flush with the portion of the lead wire portion 13 where the positioning protrusion 134 is not provided, avoiding occupying the space inside the plastic sheath 1 due to the existence of the wire groove 133 and avoiding affecting the structural reliability of the main body 11. Third, the setting of the positioning protrusion 134 can increase the depth of the wire groove 133, improve the limiting effect of the wire groove 133 on the power cord, and ensure the stability of the power cord.

[0070] In a further embodiment of the present utility model, as Figure 1 , Figure 2 and Figure 5 shown, the side of the cover plate 3 facing the lead wire portion 13 has a stop protrusion 32. The stop protrusion 32 is opposite to and abuts against the area of the lead wire portion 13 where the wire groove 133 is provided. It can be understood that the wire groove 133 is provided on the side of the lead wire portion 13 away from the main body 11, and the setting of the wire groove 133 will increase the gap between the lead wire portion 13 and the cover plate 3. By providing the stop protrusion 32 on the side of the cover plate 3 facing the lead wire portion 13, the gap between the lead wire portion 13 and the cover plate 3 can be reduced, and the stop protrusion 32 can stop the power cord located in the wire groove 133, preventing the power cord from coming out of the wire groove 133 and further improving the limiting effect of the wire groove 133 on the power cord. For example, referring to Figure 5 shown, a positioning protrusion 134 is provided on the side of the lead wire portion 13 away from the main body 11. The wire groove 133 is provided on the positioning protrusion 134. The stop protrusion 32 abuts against the portion of the positioning protrusion 134 where the wire groove 133 is not provided and is spaced apart from the inner bottom wall of the wire groove 133 to ensure the layout space of the power cord.

[0071] In a further embodiment of the present utility model, as Figure 1 , Figure 2 and Figure 5 shown, the lead pins 2 are provided in a plurality at intervals in the circumferential direction of the main body 11, and the wire grooves 133 are provided in a plurality corresponding to the plurality of lead pins 2 one by one, capable of separating multiple sub-wires of the power cord and limiting them respectively to ensure the correct wiring of the multiple sub-wires. In a specific example, referring to Figure 5As shown, there are three lead pins 2 arranged at intervals in the circumferential direction of the body 11, which are respectively electrically connected to the U-phase wire, V-phase wire, and W-phase wire of the power supply line. There are three wire grooves 133 corresponding to the three lead pins 2 one by one, which can be used to place the U-phase wire, V-phase wire, and W-phase wire of the power supply line respectively, so as to arrange the U-phase wire, V-phase wire, and W-phase wire at intervals and limit them respectively to ensure the correct wiring of the power supply line.

[0072] It should be noted that concentrating the power supply line on the lead wire part 13 can reduce the length of the power supply line, improve the convenience of operation, reduce the usage amount of the lead wire part 13, and further reduce the production and processing cost of the plastic-coated shell 1.

[0073] In a further embodiment of the present utility model, referring to the attached Figure 5 As shown, a water-blocking boss 135 is provided on the side of the lead wire part 13 facing away from the body 11. The water-blocking boss 135 extends along the width direction of the opening 132 (such as Figure 2 the b direction shown) and is spaced from the opening 132 in the radial direction of the body 11, which can reduce the probability of water, dust, or other impurities entering the lead wire part 13 from the opening 132, play a protective role for the plastic-coated shell 1, improve the reliability and stability of the plastic-coated shell 1, and thus avoid affecting the effectiveness of the lead pin 2.

[0074] In a specific example, as Figure 5 shown, the stop protrusion 32 is located on the side of the water-blocking boss 135 facing away from the axis of the body 11. It can be understood that the power supply line extends from the lead pin 2 to the opening 132. First, due to the existence of the water-blocking boss 135, the part of the power supply line located in the wire groove 133 bends towards the direction close to the cover plate 3, so that the surfaces of the cover plate 3 and the water-blocking boss 135 facing each other jointly fix the power supply line. Then, due to the existence of the stop protrusion 32, the part of the power supply line located in the wire groove 133 bends towards the direction away from the cover plate 3, so that the surfaces of the stop protrusion 32 and the guide groove facing each other jointly fix the power supply line. By bending the power supply line multiple times, a labyrinth structure can be formed, improving the fixing effect on the power supply line and ensuring the protective effect of the cover plate 3 and the lead wire part 13 on the power supply line and the lead pin 2.

[0075] In a further embodiment of the present utility model, as Figure 1 、 Figure 2 and Figure 5 shown, the lead wire part 13 is arranged between two adjacent mounting ears 14 among a plurality of mounting ears 14, which can provide an outlet space for the power supply line led out in the radial direction of the body 11 and facilitate the leading out of the power supply line.

[0076] In some embodiments of the present utility model, as Figure 1 、 Figure 2 and Figure 5As shown, the plastic-coated housing 1 is a single-piece component and can be integrally processed by processes such as injection molding, which can reduce the production processes and thus improve the production efficiency. At the same time, it can also enhance the connection strength between the body 11, the mating part 12 and the lead wire part 13, thereby enhancing the overall structural stability and reliability of the plastic-coated housing 1.

[0077] In some embodiments of the present invention, as Figure 4 shown, at least one of the two surface layers in the thickness direction of the cover body 71 is provided with a reinforcing rib 74 to improve the structural rigidity of the bearing end cover 7 and avoid the problem of vibration noise of the stator assembly 200.

[0078] Furthermore, as Figure 4 shown, the reinforcing rib 74 includes a first reinforcing rib 741 and a second reinforcing rib 742. The first reinforcing rib 741 extends along the radial direction of the cover body 71, and the first reinforcing rib 741 is a plurality of spaced apart along the circumferential direction of the cover body 71; the second reinforcing rib 742 extends along the circumferential direction of the bearing end cover 7, and the plurality of first reinforcing ribs 741 and the second reinforcing rib 742 are arranged in an interleaved manner. The first reinforcing rib 741 can improve the structural rigidity of the bearing end cover 7 in the radial direction of the cover body 71, and the second reinforcing rib 742 can improve the structural rigidity of the bearing end cover 7 in the circumferential direction of the modified body 11. The interleaved arrangement of the plurality of first reinforcing ribs 741 and the second reinforcing rib 742 can comprehensively enhance the structural rigidity of the bearing end cover 7 and avoid the problem of vibration noise of the stator assembly 200.

[0079] The air conditioner according to an embodiment of the present invention will be described below.

[0080] The air conditioner according to an embodiment of the present invention includes: the above-mentioned motor 100.

[0081] Among them, the air conditioner includes an air conditioner indoor unit and an air conditioner outdoor unit. The above-mentioned motor 100 can be a motor 100 that drives the fan to rotate in the air conditioner outdoor unit or a motor 100 that drives the impeller to rotate in the air conditioner indoor unit. Since the motor 100 adopts all the technical solutions of the above-mentioned all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be elaborated here one by one.

[0082] According to the air conditioner of the embodiment of the present utility model, by mating the outer peripheral wall of the cover body 71 of the bearing end cover 7 with the inner peripheral wall of the mating portion 12 of the plastic-coated shell 1 to seal the space inside the mating portion 12, the bearing end cover 7 can better protect the stator assembly 4 and the bearing provided inside the plastic-coated shell 1, avoiding dust, liquid, oil and other impurities from entering the inside of the stator assembly 4 or the bearing, thereby prolonging the service life of the motor 100. And relative to the bearing end cover 7 being sleeved on the radial outer side of the mating portion 12, the mating of the outer peripheral wall of the cover body 71 with the inner peripheral wall of the mating portion 12 enables, when the wall thickness of the mating portion 12 is the same, less material consumption for the mating portion 12, which can reduce the mass of the mating portion 12 and lower the manufacturing cost of the mating portion 12. At the same time, the diameter of the outer peripheral wall of the cover body 71 of the bearing end cover 7 mating with the mating portion 12 is smaller, and the material consumption required for the bearing end cover 7 is also less, reducing the manufacturing cost of the bearing end cover 7, thereby achieving cost reduction of the material of the plastic-coated shell 1.

[0083] The other constitutions and operations of the motor 100 and the air conditioner according to the embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail here.

[0084] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0085] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A motor, characterized in that: include: Rotor assembly; a stator assembly, the stator assembly being located radially outside the rotor assembly; A plastic-coated shell, the plastic-coated shell is arranged outside the stator assembly and the plastic-coated shell and the stator assembly are integrally formed, the plastic-coated shell comprises a body and a matching portion convexly arranged on the axial end surface of the body, and the matching portion is arranged on the radial inner side of the body; The bearing end cover comprises a cover body, the cover body is located in the matching portion, and the outer peripheral wall of the cover body cooperates with the inner peripheral wall of the matching portion to seal the space in the matching portion.

2. The motor according to claim 1, characterized in that The bearing end cover also includes: The flange is arranged on the outer periphery of the cover body, the flange is located on the side of the matching portion away from the body and is in contact with the axial end face of the matching portion away from the body.

3. The motor according to claim 1, characterized in that A fillet is provided between the outer peripheral wall of the matching portion and the axial end surface of the body facing the matching portion; And / or, in the direction from the matching portion to the main body, the outer peripheral wall of the matching portion is inclined in a direction away from the axis of the matching portion.

4. The motor according to claim 1, characterized in that The plastic-encapsulated shell further comprises: The mounting ears are arranged on the outer peripheral wall of the body, the mounting ears are multiple and spaced apart along the circumferential direction of the body, and the mounting ears are provided with mounting holes which axially penetrate the mounting ears.

5. The motor according to claim 4, characterized in that One side surface of the mounting ear along the axial direction of the body is a mounting surface and is flush with the axial end surface on the same side of the body. In the radial outward direction of the body, the side surface of the mounting ear facing away from the mounting surface is inclined toward the mounting surface.

6. The motor according to claim 1, characterized in that The overmolded shell further includes a lead-out portion, the mating portion and the lead-out portion are arranged on the same end surface of the body in the axial direction, the lead-out portion is located radially outside the mating portion, and the overmolded shell further includes: A lead-out pin is provided on the lead-out wire portion along the axial direction of the body and is used to connect a power line and a winding wire of the stator assembly.

7. The motor according to claim 6, characterized in that A first stop is provided on the side of the lead-out portion away from the main body, the first stop extends along the edge of the lead-out portion, the lead-out pin is located inside the first stop, and the first stop has an opening for leading out the power cord on the side away from the axis of the main body.

8. The motor according to claim 7, characterized in that The plastic-encapsulated shell further comprises: A cover plate is provided on the side of the lead-out portion facing away from the main body, and a second stop is provided on the side of the cover plate facing the lead-out portion. The second stop extends along the edge of the cover plate and is located outside the first stop and fits with the outer peripheral wall of the first stop.

9. The motor according to claim 8, characterized in that A wire groove is provided on the side of the lead-out portion away from the body. The wire groove is arranged adjacent to the opening and one end is connected to the opening, and the other end extends toward the lead-out pin. Part of the power cord is suitable for being located in the wire groove.

10. The motor according to any one of claims 7 to 9, characterized in that: A water retaining boss is provided on one side of the lead-out portion away from the main body. The water retaining boss extends along the width direction of the opening and is spaced apart from the opening in the radial direction of the main body.

11. An air conditioner, characterized in that: Comprising a motor according to any one of claims 1-10.

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