Motors and electrical products

Abstract

The embodiment of the present application provides a motor and an electrical product. The motor includes a rotor and a stator, and the stator includes: a stator core having a core back and a plurality of teeth; a plurality of insulating members covering the plurality of teeth; a plurality of coils wound around the plurality of teeth through the plurality of insulating members; and a bus bar located on the axial upper side of the stator core. Each coil is composed of a wire, and the lead-in end and the lead-out end of the coil are respectively located on the same radial side of the teeth around which the coil is wound. The bus bar has a plurality of claws electrically connected to the ends of the plurality of coils, and the plurality of claws are equally divided in the circumferential direction and are located at positions with the same radial length. Each insulating member includes a covering portion and an extension portion extending from the covering portion to the axial upper side. At least one of the lead-in end and the lead-out end of the coil is supported on the circumferential side of the extension portion. The central angle formed by the circumferential positions of the lead-in end and the lead-out end of the coil is 180 / n, where n is the number of teeth, and each claw and the end of each coil are located in the same radial direction.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of electromechanics, and in particular to a motor and an electrical product. Background Art

[0002] In the prior art, each tooth of the stator core is wound with a coil, each coil is wound with a wire, and both ends of the coil (lead-in end and lead-out end) are led out from the same radial side of the portion of the insulating member covering the tooth. As a result, the ends of the two coils in the same tooth slot are close to each other, while the two ends of the coil wound on the same tooth are far apart, causing the lead-out ends of the coil to be unequally divided in the circumferential direction. On the other hand, the claws of the busbar are equally divided in the circumferential direction. Therefore, when electrically connecting the ends of the coils to the claws of the busbar, the ends of the coils need to be pulled to the claws of the busbar for electrical connection, which is not conducive to automated operation.

[0003] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Summary of the invention

[0004] In order to solve the above technical problems or other problems, the embodiments of the present application provide a motor and an electrical product.

[0005] According to one aspect of an embodiment of the present application, a motor is provided, the motor comprising a rotor rotating about a central axis and a stator radially opposite to the rotor, the stator comprising:

[0006] A stator core, comprising an annular core back and a plurality of teeth extending radially from the core back;

[0007] A plurality of insulating members covering the plurality of teeth;

[0008] a plurality of coils, which are wound around the plurality of teeth via the plurality of insulating members, each of the coils being composed of a wire, and the lead-in end and the lead-out end of the coil are respectively located on the same radial side of the teeth around which the coil is wound; and

[0009] a bus bar located on the axial upper side of the stator core, the bus bar having a plurality of claws electrically connected to the lead-in ends and the lead-out ends of the plurality of coils, the plurality of claws being equally divided in the circumferential direction and located at positions of the same radial length,

[0010] Each of the insulating members includes a covering portion and an extending portion extending axially upward from the covering portion, the lead-in end and the lead-out end of the coil are supported on the extending portion, and at least one of the lead-in end and the lead-out end of the coil is supported on the circumferential side surface of the extending portion.

[0011] The central angle formed by the circumferential positions of the lead-in end and the lead-out end of the coil is 180 / n, where n is the number of teeth, and each claw portion and the end of each coil are located in the same radial direction.

[0012] In some embodiments, the circumferential center positions of the covering portion and the extending portion are staggered in the circumferential direction.

[0013] In some embodiments, the covering portion has a first circumferential wall portion, a second circumferential wall portion, and a top surface portion connecting the first circumferential wall portion and the second circumferential wall portion on the axial upper side of the first circumferential wall portion and the second circumferential wall portion, the first circumferential wall portion has a winding surface and a guide surface extending along the axial direction, the guide surface is closer to the radial outside relative to the winding surface, and the introduction end of the coil is wound around the covering portion along the guide surface.

[0014] In some embodiments, the lead-in end of the coil is supported on a circumferential side surface of the extension portion.

[0015] In some embodiments, a portion of the axial upper side of the circumferential side surface of the extension portion is circumferentially recessed to form an introduction positioning groove, and a portion of the axial lower side of the circumferential side surface of the extension portion is formed as a notch, and the axial length of the notch is greater than the axial length of the introduction positioning groove.

[0016] In some embodiments, the lead-out end of the coil is supported on the radial inner side of the extension portion, and relative to the lead-in end of the coil, the lead-out end of the coil is located on the other circumferential side of the tooth portion.

[0017] In some embodiments, an output positioning groove recessed radially outward is formed on the radial inner side surface of the extension portion away from the introduction positioning groove, the axial length of the output positioning groove is more than half of the axial length of the extension portion, and the depth of the portion of the output positioning groove close to the axial lower side gradually decreases as it extends toward the axial lower side.

[0018] In some embodiments, the insulating member also has a protrusion, which extends from the radial inner side surface of the extension portion away from the introduction end of the coil toward the direction close to the tooth portion covered by the insulating member, and, in the axial direction, the protrusion is located on the axial lower side of the lead-out positioning groove and on the axial upper side of the covering portion.

[0019] In some embodiments, the circumferential width of the extension portion is smaller than the circumferential width of the covering portion, and the lead-in end and the lead-out end of the coil are respectively supported on the side surfaces on both sides of the circumferential direction of the extension portion.

[0020] According to another aspect of the embodiments of the present application, there is provided an electrical product, the electrical product comprising the motor described in any one of the aforementioned embodiments.

[0021] One of the beneficial effects of the embodiment of the present application is that: according to the embodiment of the present application, by supporting at least one terminal of the coil on the circumferential side of the extension portion of the insulating member, it is convenient for the end of the coil to be wound around the tooth portion and form a circumferential equal division of the coil terminal, thereby facilitating electrical connection with each claw of the bus bar.

[0022] With reference to the following description and accompanying drawings, the specific embodiments of the present application are disclosed in detail, indicating the way in which the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope. Within the scope of the spirit and clauses of the appended claims, the embodiments of the present application include many changes, modifications and equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0024] Figure 1 is a schematic diagram of an example of a motor according to an embodiment of the present application;

[0025] Figure 2 yes Figure 1 A top view of the motor shown;

[0026] Figure 3 yes Figure 1 A schematic diagram of an example of an insulating member of a motor is shown;

[0027] Figure 4 yes Figure 3 A front view of the insulating member shown;

[0028] Figure 5 yes Figure 3 a right side view of the insulating member shown;

[0029] Figure 6 yes Figure 3 A left side view of the insulating member shown;

[0030] Figure 7yes Figure 3 A top view of the insulating member is shown. DETAILED DESCRIPTION

[0031] With reference to the accompanying drawings, the above and other features of the present application will become apparent through the following description. In the description and the accompanying drawings, specific embodiments of the present application are specifically disclosed, which show some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents falling within the scope of the attached claims.

[0032] In the embodiments of the present application, the term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "include", "comprises", "has", etc. refer to the existence of the stated features, elements, components or components, but do not exclude the existence or addition of one or more other features, elements, components or components.

[0033] In the embodiments of the present application, the singular forms "a", "the", etc. may include plural forms and should be broadly understood as "a kind" or "a type" rather than being limited to the meaning of "one"; in addition, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least in part according to...", and the term "based on" should be understood as "at least in part based on...", unless the context clearly indicates otherwise.

[0034] In addition, in the following description of the present application, for the convenience of explanation, the direction extending along the central axis O of the motor or the direction parallel to it is called "axial direction"; the direction from the stator of the motor to the bus bar is called "axial upper side"; the direction from the bus bar of the motor to the stator is called "axial lower side"; the radial direction centered on the central axis O is called "radial direction"; the direction close to the central axis O is called "radial inner side"; the direction away from the central axis O is called "radial outer side"; the direction around the central axis O is called "circumferential direction". However, it is worth noting that these are only for the convenience of explanation and do not limit the direction of the motor when it is used and manufactured.

[0035] The implementation of the embodiments of the present application will be described below with reference to the accompanying drawings.

[0036] Embodiments of the first aspect

[0037] An embodiment of the present application provides a motor.

[0038] Figure 1 is a schematic diagram of an example of a motor according to an embodiment of the present application, Figure 2 yes Figure 1 The top view of the motor is shown in FIG. Figure 1 and Figure 2 As shown, the motor according to the embodiment of the present application includes a rotor (not shown) rotating about a central axis O and a stator 10 arranged opposite to the rotor in a radial direction.

[0039] like Figure 1 and Figure 2 As shown, the stator 10 comprises:

[0040] The stator core 11 includes a ring-shaped core back 111 and a plurality of teeth (not shown) extending radially from the core back 111;

[0041] A plurality of insulating members 12 covering the plurality of teeth;

[0042] A plurality of coils 13, which are wound around a plurality of teeth via a plurality of insulating members 12, each coil 13 is composed of a wire, and an introduction end 131 and an extraction end 132 of the coil are respectively located on the same radial side of the teeth around which the coil 13 is wound; and

[0043] The bus bar 14 is located on the axial upper side of the stator core 11 and has a plurality of claws 141 electrically connected to the ends (inlet ends 131 and outlet ends 132) of the plurality of coils 13. The plurality of claws 141 are equally divided in the circumferential direction and are located at positions with the same radial length.

[0044] Figure 3 yes Figure 1 A schematic diagram of an example of an insulating member 12 of a motor is shown, Figure 4 yes Figure 3 The front view of the insulating member 12 shown, Figure 5 yes Figure 3 The right side view of the insulating member 12 is shown, Figure 6 yes Figure 3 The left side view of the insulating member 12 is shown, Figure 7 yes Figure 3 A top view of the insulating element 12 is shown.

[0045] like Figures 3 to 7 As shown, in the embodiment of the present application, the insulating member 12 includes a covering portion 121 and an extension portion 122 extending axially upward from the covering portion 121, the introduction end 131 and the lead-out end 132 of the coil 13 are supported on the extension portion 122, and at least one of the introduction end 131 and the lead-out end 132 of the coil 13 is supported on the circumferential side surface of the extension portion 122.

[0046] Figures 3 to 7The situation in which the lead-in end 131 of the coil 13 is supported on the circumferential side surface S1 of the extension portion 122 is shown, but the present application is not limited to this. The lead-in end 131 and the lead-out end 132 of the coil 13 may also be supported on two circumferential side surfaces of the extension portion 122, respectively. For example, the lead-in end 131 of the coil 13 is supported on the circumferential side surface S1 of the extension portion 122, and the lead-out end 132 of the coil 13 is supported on the other circumferential side surface S2 of the extension portion 122; or, the lead-in end 131 of the coil 13 is supported on the circumferential side surface S2 of the extension portion 122, and the lead-out end 132 of the coil 13 is supported on the other circumferential side surface S1 of the extension portion 122.

[0047] In the embodiment of the present application, the central angle formed by the circumferential positions of the lead-in end 131 and the lead-out end 132 of the coil 13 is 180 / n, n is the number of teeth, and each claw portion 141 and the end of each coil 13 (the lead-in end 131 and the lead-out end 132) are located in the same radial direction.

[0048] According to the structure of the motor of the embodiment of the present application, by supporting at least one end (the lead-in end 131 and / or the lead-out end 132) of the coil 13 on the side surface of at least one circumferential side of the extension portion 122 of the insulating member 12, the ends of all the coils 13 are equally spaced in the circumferential direction, thereby facilitating electrical connection with the claws 141 of the bus bar.

[0049] In some embodiments, Figure 3 and Figure 4 As shown in FIG. 1 , the circumferential center positions of the covering portion 121 and the extending portion 122 are staggered in the circumferential direction. Figure 4 As shown, the center position P1 of the covering portion 121 and the center position P2 of the extension portion 122 are not at the same circumferential position, that is, relative to the center position P1 of the covering portion 121, the center position P2 of the extension portion 122 is offset to the left by d1, thereby making the center positions of the two circumferentially staggered.

[0050] The present application does not impose any restrictions on the distance of the circumferential offset. Through the design of the circumferential offset, the ends of the coil 13 (the lead-in end 131 and the lead-out end 132) are conveniently wound around the teeth and form circumferential equal divisions of the ends of the coil, thereby facilitating electrical connection with the claws 141 of the bus bar 14.

[0051] In some embodiments, Figures 3 to 7As shown, the covering portion 121 has a first circumferential wall portion 121-1, a second circumferential wall portion 121-2, and a top surface portion 121-3 connecting the first circumferential wall portion 121-1 and the second circumferential wall portion 121-2 on the axial upper side thereof, the first circumferential wall portion 121-1 having a winding surface S3 and a guide surface S4 extending along the axial direction, the guide surface S4 being closer to the radial outside than the winding surface S3, and the introduction end 131 of the coil 13 is wound around the covering portion 121 along the guide surface S4.

[0052] Therefore, when the conductive wire is wound around the teeth of the stator core 11 via the insulating member 12 , the stress of the winding wire can be relieved by the guide surface S4 , so that the conductive wire can be stably fixed to the lead-in end 131 .

[0053] In some embodiments, Figures 3 to 7 As shown, the lead-in end 131 of the coil 13 is supported on the circumferential side surface S1 of the extension portion 122 of the insulating member 12. Thus, it is convenient to lead in the wire when winding the wire. However, the present application is not limited thereto, and the lead-out end 132 of the coil 13 may also be supported on the circumferential side surface S1 of the extension portion 122 of the insulating member 12.

[0054] In some embodiments, Figures 3 to 7 As shown, a portion of the axial upper side of the circumferential side surface S1 of the extension portion 122 of the insulating member 12 is circumferentially recessed to form an introduction positioning groove 122-1, and a portion of the axial lower side of the circumferential side surface S1 of the extension portion 122 is formed as a notch 122-2; Figure 5 As shown, the axial length h1 of the notch 122-2 is greater than the axial length h2 of the introduction positioning groove 122-1. Therefore, the introduction end 131 of the coil 13 is inserted into the introduction positioning groove 122-1 through the notch 122-2, which is convenient for operation.

[0055] In some embodiments, Figures 3 to 7 As shown, the lead-out end 132 of the coil 13 is supported on the radial inner side S5 of the extension portion 122 of the insulating member 12, and is located at the other side of the circumferential direction of the tooth portion relative to the lead-in end 131 of the coil 13. Figure 2 As shown, the lead-in end 131 and the lead-out end 132 of the coil 13 are located on both sides in the circumferential direction. This can prevent interference with the lead-in end supported on the circumferential side surface S1 of the extension portion 122 on the adjacent side, thereby preventing short circuit.

[0056] In the above embodiment, since the extension portion 122 supporting the lead-in end 131 and the lead-out end 132 of the coil 13 and the covering portion 121 covering the tooth portion of the stator core 11 are designed to be circumferentially staggered, strictly speaking, the lead-in end 131 and the lead-out end 132 of the coil 13 are not absolutely located on both sides of the circumference of the tooth portion covered by the insulating member 12, but have a certain offset. However, from the overall point of view, the lead-in end 131 and the lead-out end 132 of the coil 13 are located on both sides of the circumference of the tooth portion covered by the insulating member 12.

[0057] In some embodiments, Figures 3 to 7 As shown, a lead-out positioning groove 122-3 recessed radially outward is formed on the side of the radial inner side S5 of the extension portion 122 of the insulating member 12 away from the introduction positioning groove 122-1, and the axial length of the lead-out positioning groove 122-3 is more than half of the axial length of the extension portion 122 of the insulating member 12, and the depth of the portion 122-4 of the lead-out positioning groove 122-3 close to the axial lower side gradually decreases as it extends axially downward. In this way, the lead-out end 132 of the coil 13 can be fixed.

[0058] In some embodiments, Figures 3 to 7 As shown, the insulating member 12 also has a protrusion 123, which extends from the radial inner side surface of the extension portion 122 away from the introduction end 131 in the direction toward the tooth portion covered by the insulating member 12, and, in the axial direction, the protrusion 123 is located on the axial lower side of the lead-out positioning groove 122-3 and on the axial upper side of the covering portion 11.

[0059] In the above embodiment, if Figure 4 As shown, the lead-out positioning groove 122-3, the protrusion 123 and the covering portion 11 are also designed to be circumferentially staggered in the circumferential direction. For example, the protrusion 123 is closer to the left side (one circumferential side) relative to the lead-out positioning groove 122-3 and the covering portion 11, and the lead-out positioning groove 122-3 is closer to the left side (one circumferential side) relative to the covering portion 121, but in the axial direction, the protrusion 123 is located between the lead-out positioning groove 122-3 and the covering portion 121.

[0060] Therefore, the protrusion 123 can assist in fixing the position of the winding wire, making it easier for the winding wire to be inserted into and drawn out of the positioning groove 122 - 3 .

[0061] In some embodiments, Figures 3 to 7As shown, the insulating member 12 may also have a first stopper 124 and a second stopper 125. The first stopper 124 extends axially upward from the axially upper ends of the radially inner side surfaces of the first circumferential wall portion 121-1 and the second circumferential wall portion 121-2 of the covering portion 121, and stops the coil 13 wound on the insulating member 12 on the radially inner side to prevent the coil from falling off from the radially inner side. The second stopper 125 extends circumferentially outward (away from each other) from the radially outer side surfaces of the first circumferential wall portion 121-1 and the second circumferential wall portion 121-2 of the covering portion 121, and stops the coil 13 wound on the insulating member 12 on the radially outer side to prevent the coil 13 from falling off from the radially outer side.

[0062] In the above embodiments, the structure of the motor of the embodiment of the present application, especially the structure of the insulating member 12, is described by taking the circumferential center positions of the covering portion 121 and the extending portion 122 of the insulating member 12 being staggered in the circumferential direction as an example, but the present application is not limited to this.

[0063] In some embodiments, the insulating member 12 is not designed in a manner that the covering portion 121 and the extending portion 122 are circumferentially staggered, but is designed in a manner that the circumferential width of the extending portion 122 is shortened. For example, the circumferential width of the extending portion 122 is smaller than the circumferential width of the covering portion 121, and the lead-in end 131 and the lead-out end 132 of the coil 13 are respectively supported on the side surfaces of the extending portion 122 on both sides in the circumferential direction, so that the ends of the coil 13 are equally divided in the circumferential direction, thereby facilitating electrical connection between the ends of the coil 13 and the claws 141 of the bus bar 14.

[0064] It is worth noting that the above is only an exemplary description of the structure of the motor related to the present application, but the present application is not limited to this, and appropriate modifications can be made based on the above embodiments. In addition, the above is only an exemplary description of each component, but the present application is not limited to this, and the specific content of each component can also refer to the relevant technology; in addition, it can also be added Figures 1 to 7 Parts not shown, or reduced Figures 1 to 7 For other components and structures of the motor, reference may be made to the relevant art and the description thereof will be omitted here.

[0065] According to the embodiments of the present application, the circumferential equalization of the ends of the coil supported on the extension portion is achieved by circumferentially staggering the covering portion and the extension portion of the insulating member or shortening the circumferential width of the extension portion, which has the advantages of simple structure and easy operation.

[0066] Embodiments of the second aspect

[0067] The present application embodiment provides an electrical product, which has the motor described in the embodiment of the first aspect. Since the structure of the motor has been described in detail in the embodiment of the first aspect, its content is incorporated here and the description is omitted here.

[0068] In the embodiment of the present application, the electrical product can be any electrical equipment equipped with a motor, for example, it can be an indoor unit of an air conditioner, an outdoor unit of an air conditioner, a water dispenser, a washing machine, a sweeper, a compressor, a blower, a mixer and other household appliances, or it can be pumps, conveyors, elevators, standard industrial general-purpose machines, wind turbines, grinders, traction motors and other industrial equipment or various information processing equipment, and it can also be various parts of a car, such as a car electric power steering system, a car sunroof adjustment component, a seat adjustment component, a transmission, a brake device, etc.

[0069] The present application is described above in conjunction with specific implementation methods, but it should be clear to those skilled in the art that these descriptions are exemplary and are not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on the spirit and principles of the present application, and these modifications and variations are also within the scope of the present application.

[0070] The preferred embodiments of the present application are described above with reference to the accompanying drawings. Many features and advantages of these embodiments are clear from this detailed description, and therefore the appended claims are intended to cover all such features and advantages of these embodiments that fall within their true spirit and scope. In addition, since many modifications and changes are easily conceivable to those skilled in the art, the embodiments of the present application are not intended to be limited to the precise structures and operations illustrated and described, but all suitable modifications and equivalents that fall within their scope may be covered.

Claims

1. A motor, comprising a rotor rotating about a central axis and a stator radially opposite to the rotor, wherein the stator comprises: A stator core, comprising an annular core back and a plurality of teeth extending radially from the core back; A plurality of insulating members covering the plurality of teeth; A plurality of coils, which are wound around the plurality of teeth via the plurality of insulating members, each of the coils is composed of a wire, and the lead-in end and the lead-out end of the coil are respectively located on the same radial side of the teeth around which the coil is wound; as well as a bus bar located on the axial upper side of the stator core, the bus bar having a plurality of claws electrically connected to the lead-in ends and the lead-out ends of the plurality of coils, the plurality of claws being equally divided in the circumferential direction and located at positions of the same radial length, It is characterized in that Each of the insulating members includes a covering portion and an extending portion extending axially upward from the covering portion, the lead-in end and the lead-out end of the coil are supported on the extending portion, and at least one of the lead-in end and the lead-out end of the coil is supported on a circumferential side surface of the extending portion, The circumferential center positions of the covering portion and the extending portion are staggered in the circumferential direction, The central angle formed by the circumferential positions of the lead-in end and the lead-out end of the coil is 180 / n, where n is the number of teeth, and each claw portion and the end of each coil are located in the same radial direction.

2. The motor according to claim 1, characterized in that The covering portion includes a first circumferential wall portion, a second circumferential wall portion, and a top portion portion connecting the first circumferential wall portion and the second circumferential wall portion on the axial upper side of the first circumferential wall portion and the second circumferential wall portion. The first circumferential wall portion includes a winding surface and a guide surface extending in the axial direction. The guide surface is radially closer to the outside relative to the winding surface, and the introduction end of the coil is wound around the covering portion along the guide surface.

3. The motor according to claim 1, characterized in that The lead-in end of the coil is supported on a circumferential side surface of the extending portion.

4. The motor according to claim 3, characterized in that A portion of the axial upper side of the circumferential side surface of the extension portion is circumferentially recessed to form an introduction positioning groove, and a portion of the axial lower side of the circumferential side surface of the extension portion is formed as a notch, and the axial length of the notch is greater than the axial length of the introduction positioning groove.

5. The motor according to claim 3, characterized in that The lead-out end of the coil is supported on the radial inner side of the extension portion, and is located at the other side of the tooth portion in the circumferential direction relative to the lead-in end of the coil.

6. The motor according to claim 4, characterized in that An output positioning groove recessed radially outward is formed on the radial inner side surface of the extension portion away from the introduction positioning groove, the axial length of the output positioning groove is more than half of the axial length of the extension portion, and the depth of the portion of the output positioning groove close to the axial lower side gradually decreases as it extends toward the axial lower side.

7. The motor according to claim 6, characterized in that The insulating member also has a protrusion, which extends from the radial inner side surface of the extension portion, away from the introduction end of the coil, toward the direction close to the tooth portion covered by the insulating member, and, in the axial direction, the protrusion is located on the axial lower side of the lead-out positioning groove and on the axial upper side of the covering portion.

8. The motor according to claim 1, characterized in that The circumferential width of the extending portion is smaller than the circumferential width of the covering portion, and the lead-in end and the lead-out end of the coil are respectively supported on the side surfaces of both sides of the extending portion in the circumferential direction.

9. An electrical product, characterized in that: The electrical product comprises the motor according to any one of claims 1 to 8.

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