Stator structure of high-speed motor and winding method thereof

Abstract

The invention discloses a stator structure of a high-speed motor and a winding method thereof, the stator structure of the high-speed motor comprises a stator core and a rubber coating support, and an assembly channel for assembling a rotor structure is formed in the center of the stator core; n groups of winding tooth groups are annularly arranged on the inner side surface of the stator core around the assembly channel; n is an integer greater than 1; the rubber coating bracket is coated on the stator iron core; an annular wiring base is arranged at the end part of the rubber coating bracket and protrudes along the axial direction of the stator iron core; n wiring groove groups with different depths are formed in the wiring base; each winding tooth group comprises two winding convex teeth which are arranged at an interval of 180 degrees; and each wiring groove group comprises two wiring grooves which are arranged at an interval of 180 degrees and have the same depth. By arranging the wiring groove groups with different depths, varnished wires of different windings are separated, mutual lamination between wire bodies is avoided, the insulation or voltage-resistant level of the varnished wires is improved, the production yield of the motor is further improved, and the product performance is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-speed motors, and in particular to a stator structure of a high-speed motor and a winding method thereof. Background Art

[0002] A motor is a device that uses the principle of electromagnetic induction to convert electrical energy into mechanical energy. It is widely used in industrial production and various electrical equipment required for life. In the field of high-speed motors, the speed of high-speed blower motors can reach more than 100,000 revolutions per minute. It has the advantages of high efficiency and small size and is widely used. At present, high-speed blower motors are all inner rotor structures. A fixed stator is set in the shell, and a through hole is set in the middle of the stator to assemble the rotor; a coil is wound on the stator, and when the coil is energized, a rotating magnetic field is generated, which in turn drives the magnet on the rotor to rotate. Specifically, the inner side of the existing stator structure often bulges out to form a plurality of winding teeth, and every two winding teeth set at an interval of 180° form a group. Enameled wire is wound on several groups of winding teeth to form a multi-phase winding.

[0003] However, the existing winding process is to first wind the enameled wire on a winding tooth, and after the coil is formed, it is moved along the outer surface of the stator structure to another opposite winding tooth for winding to form a second coil, forming a single-phase winding. On this basis, multiple windings need to be repeated to form a multi-phase winding. From the perspective of the overall winding process, the enameled wire is repeatedly wound around the outer surface of the stator structure, which is prone to overlap and wear problems, and easily causes damage to the paint on the surface of the enameled wire, thereby affecting the performance and production yield of the motor product.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a stator structure of a high-speed motor and a winding method thereof, aiming to solve the problem that the enameled wire on the outer surface of the existing motor stator is prone to overlap, affecting the production yield, performance and service life of the motor.

[0006] The technical solution of the present invention is as follows:

[0007] A stator structure of a high-speed motor, wherein the stator structure of the high-speed motor comprises a stator core and a rubber-coated bracket, wherein an assembly channel for assembling a rotor structure is formed in the center of the stator core; n groups of winding tooth groups are arranged in a ring shape around the assembly channel on the inner surface of the stator core; n is an integer greater than 1; the rubber-coated bracket is coated on the stator core; an annular wiring base is arranged at the end of the rubber-coated bracket, and the wiring base protrudes along the axial direction of the stator core; n groups of wiring groove groups with different depths are arranged on the wiring base; each group of the winding tooth group comprises two winding convex teeth arranged at an interval of 180°; each group of the wiring groove group comprises two wiring grooves with the same depth arranged at an interval of 180°.

[0008] The stator structure of the high-speed motor, wherein the stator core includes an annular yoke and the winding convex teeth arranged on the inner side of the yoke, a plurality of the winding convex teeth are provided, and the plurality of the winding convex teeth are arranged in a ring shape on the inner wall of the yoke; the rubber-coated bracket includes an annular body and a winding part, the annular body is arranged in contact with the inner wall of the yoke; the end of the annular body is provided with the routing base; the winding part is connected to the annular body, covered on the winding convex teeth, and is used for winding the enameled wire; the stator structure of the high-speed motor includes a plurality of pins, the pins are arranged on one end of the routing base away from the annular body; and the projection of the pin on the annular body is located at the position where the winding part and the annular body are connected.

[0009] The stator structure of the high-speed motor, wherein the winding convex tooth includes a connecting section and a step section, one side of the connecting section is connected to the yoke, and the other side extends toward the center of the yoke and is provided with the step section; the step section is fan-shaped, and the width of the step section is greater than the width of the connecting section; the winding portion is coated on the outer surface of the connecting section, and one end of the winding portion that is away from the annular body is turned outward to form a wire blocking segment; a wire arrangement groove for accommodating the coil is formed between the wire blocking segment and the annular body.

[0010] The stator structure of the high-speed motor is characterized in that a plurality of planes arranged in a ring shape are provided on the inner wall of the ring-shaped body, and the winding part is provided at the central position of the plane.

[0011] In the stator structure of the high-speed motor, at least one positioning groove is provided on the outer surface of the yoke, and the cross-sectional shape of the positioning groove is rectangular.

[0012] The stator structure of the high-speed motor, wherein the pins include a wire head winding pin, a wire tail winding pin and a grounding pin, the wire head winding pin is arranged in a ring shape on the wiring base, and is used to wind the wire head of the coil; the wire tail winding pin is used to wind the wire tail of the coil; the grounding pin contacts the stator core for grounding; the number of the wire head winding pins is equal to the number of the winding tooth groups, and the number of the wire tail winding pins is less than the number of the winding tooth groups; the wire heads of the coils on each group of the winding tooth groups are respectively connected to one of the wire head winding pins, and the wire tails of the coils on at least two groups of the winding tooth groups are commonly connected to one of the wire tail winding pins.

[0013] The stator structure of the high-speed motor, wherein the wiring base is also provided with a wire outlet groove, the wire outlet groove and the wiring groove are respectively arranged on both sides of the pin, and the wire outlet groove is used to guide the wire tail of the coil on the winding tooth group to the wire tail winding needle.

[0014] The stator structure of the high-speed motor, wherein an assembly platform is formed on the outside of the wiring base; the stator structure of the high-speed motor includes an end cover, which is connected to the rubber-coated bracket and is arranged on the assembly platform to cover the wiring base.

[0015] In the stator structure of the high-speed motor, a sinking groove is formed on the end surface of the end cover away from the rubber-coated bracket, and the sinking groove is used to accommodate the control board.

[0016] The present application also discloses a winding method for a stator structure of a high-speed motor, which is used for the stator structure of any high-speed motor as described above; wherein the winding method comprises:

[0017] Move the stator structure of the high-speed motor to be wound to the winding station;

[0018] The wiring groove groups are numbered from 1 to n groups in descending order of depth value; and the winding heights of the enameled wires are set based on the depth values ​​of the n wiring groove groups, which are recorded as the first winding height to the nth winding height respectively;

[0019] The n groups of winding tooth groups are wound in sequence according to the numbering sequence of the wiring slot groups; wherein the height of the m-th winding is the m-th winding height; m is an integer satisfying 1≤m≤n.

[0020] Compared with the prior art, the embodiments of the present invention have the following advantages:

[0021] A multi-phase winding is to be arranged on the stator structure of the high-speed motor disclosed in the present invention. The enameled wires wound by different winding tooth groups are arranged in wiring groove groups of different depths, so that the enameled wires are staggered when passing around the surface of the rubber-coated bracket, thereby avoiding the overlapping of the wires, improving the orderliness of the wiring design on the stator structure of the high-speed motor, and being beneficial to maintaining the original insulation and withstand voltage level of the enameled wires, improving the production yield, and further improving the performance and life of the stator structure of the high-speed motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A top view of the winding state on the stator structure of a high-speed motor in the present invention;

[0024] Figure 2 A side view of a winding state on a stator structure of a high-speed motor in the present invention;

[0025] Figure 3 It is a structural schematic diagram of the stator structure of the high-speed motor in the present invention;

[0026] Figure 4 It is a structural explosion diagram of the stator structure of the high-speed motor in the present invention;

[0027] Figure 5 A top view of the stator structure of the high-speed motor of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the stator core in the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the rubber-encapsulated stent in the present invention;

[0030] Figure 8 Schematic diagram of the winding path of a phase winding in the present invention;

[0031] Fig. 9 is a schematic diagram of a winding path of another phase winding in the present invention;

[0032] Fig.10 is a schematic diagram of a winding path of another phase winding in the present invention;

[0033] Fig.11 Schematic diagram of the winding path of the three-phase winding in the present invention;

[0034] Fig.12 A side view of the stator structure of the high-speed motor of the present invention in a winding completion state;

[0035] Fig.13 A schematic diagram of the stator structure of a high-speed motor in another embodiment of the present invention

[0036] Fig.14 The figure is a flow chart of a winding method for a stator structure of a high-speed motor in the present invention.

[0037] Among them, 10, stator core; 11, yoke; 12, winding convex teeth; 121, connecting section; 122, stage; 13, positioning slot; 20, rubber-coated bracket; 21, wiring base; 211, wiring groove; 212, wiring channel; 213, outlet groove; 22, annular body; 221, plane; 23, winding part; 231, wire blocking section; 232, wire arrangement groove; 30, pin; 31, wire end winding needle; 32, wire end winding needle; 33, grounding pin; 40, motor rotor structure; 50, end cover; 60, control board. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the prior art, the stator structure of the high-speed blower motor is an inner rotor structure, which is basically composed of 6 teeth, and a group of coils are wound around each tooth to form a three-phase winding.

[0040] like Figure 1 and Figure 2 As shown, the specific winding process is as follows:

[0041] Before starting to wind the wire, number the six teeth in clockwise order, with tooth No. 1 and tooth No. 4 being opposite to each other, tooth No. 2 and tooth No. 5 being opposite to each other, and tooth No. 3 and tooth No. 6 being opposite to each other.

[0042] First, wind the No. 1 tooth and start winding from the right side of the No. 1 tooth ( Figure 1 The wire is wound from the left side of tooth No. 1, and then from the right side of tooth No. 1, in a counterclockwise winding cycle. When the coil on tooth No. 1 is finished, the wire end is led out from the left side of tooth No. 1, so that the wire head and wire tail of the coil are kept at the same end of the stator core.

[0043] Then, the enameled wire needs to be wound across half of the outer circumference of the stator core to reach the opposite tooth No. 4 for winding. At this time, if the enameled wire is led out from the left side of tooth No. 1 and directly passes through the outer circumference of the stator core to the opposite side in a clockwise direction, it will interfere with the subsequent winding of tooth No. 6. Therefore, after the wire tail of the coil on tooth No. 1 is wound out from the left side of tooth No. 1, it needs to continue to be wound from the end of tooth No. 1 to the right side of tooth No. 1, fold back on the outer circumference of the stator core, and cross-wrap to tooth No. 4 in a counterclockwise direction.

[0044] Then, when the wire end reaches tooth No. 4, it is lowered from the right side of tooth No. 4, crossed over the bottom of tooth No. 4, wound up from the left side of tooth No. 4, crossed over the end of tooth No. 4 and returned to the right side of tooth No. 4. The winding cycle is repeated until the coil of tooth No. 4 is completed, and the tail of the wire is led out from the left side of tooth No. 4. In this way, a complete set of coils is wound and the first phase cross-wire is made.

[0045] Finally, in the same way, the second phase crossover needs to be 120° apart from the first phase crossover, so the second phase crossover is first wound around tooth 3 and then around tooth 6, that is, Figure 1 The winding method of the blue wire is exactly the same as that of the first phase crossover wire. Similarly, the third phase crossover wire also needs to be 120° apart from the second phase crossover wire. The third phase crossover wire is first wound around the No. 2 tooth and then around the No. 5 tooth, that is, Figure 1 The green wire in the middle is wound in the same way as the first phase cross-wire, so that all three-phase cross-wires are wound.

[0046] like Figure 1 and Figure 2 As shown, in order to make a three-phase crossover wire on the existing stator core, when winding multiple enameled wires, there are the following problems:

[0047] First, the wire ends and tails leading out from the first tooth of each phase cross-line will contact and squeeze together, which can easily cause damage to the paint on the surface of the enameled wire, resulting in a decrease in insulation and voltage resistance, leading to defective coils on this tooth, thereby affecting the performance and life of the motor.

[0048] Second, the two coils of each phase crossover need to be connected by a crossover wire, so there are three crossover wires, and each crossover wire must cross half of the outer cylindrical surface of the stator core, so on the outer cylindrical surface of the stator core, two crossover wires are overlapped in some areas, and three crossover wires are overlapped in some areas. Since the paint coating of the enameled wire is very thin, overlapping between the crossover wires may cause damage to the paint coating of the enameled wire, which will cause the insulation or withstand voltage level of the crossover wire to decrease, resulting in poor insulation and withstand voltage between the crossover wires.

[0049] In summary, the existing stator core structure has the problem of wire stacking and extrusion during winding, which affects the performance and production yield of the motor product.

[0050] The present embodiment provides a stator structure of a high-speed motor, which can orderly separate the enameled wires of different windings, thereby avoiding damage and improving product yield. For the convenience of explanation, the embodiment of the present application uses a stator core 10 with 6 teeth for illustration, but it is not exhaustive. The stator structure of the high-speed motor disclosed in the embodiment of the present application may also include a stator core 10 with 8 teeth, 12 teeth or other numbers of teeth, as an equivalent replacement of the concept of the present invention, and these embodiments should also be within the scope of protection of the present application.

[0051] See also Figure 3 , Figure 4 and Figure 5 In one embodiment of the present invention, a stator structure of a high-speed motor is disclosed, wherein the stator structure of the high-speed motor includes a stator core 10 and a rubber-coated bracket 20, wherein an assembly channel for assembling a rotor structure is formed in the center of the stator core 10; n groups of winding tooth groups are arranged in a ring shape around the assembly channel on the inner surface of the stator core 10; n is an integer greater than 1; the rubber-coated bracket 20 is coated on the stator core 10; an annular wiring base 21 is arranged at the end of the rubber-coated bracket 20, and the wiring base 21 protrudes along the axial direction of the stator core 10; n groups of wiring groove groups with different depths are arranged on the wiring base 21; each group of the winding tooth group includes two winding convex teeth 12 arranged at an interval of 180°; each group of the wiring groove group includes two wiring grooves 211 with the same depth arranged at an interval of 180°.

[0052] The high-speed motor disclosed in this embodiment includes but is not limited to a high-speed brushless motor in the field of high-speed hair dryers. The high-speed motor is composed of a stator structure and a rotor structure to form a complete magnetic circuit. The stator structure is hollow and the rotor structure is inserted into the middle position of the stator structure. Based on the law of electromagnetic induction, the electrical energy is converted into mechanical energy.

[0053] like Figure 4 As shown, in this embodiment, a plurality of winding teeth 12 are arranged around the assembly channel in the middle of the stator core 10 to form n groups of winding teeth; n is a positive integer greater than 1, so that coils can be wound on the n groups of winding teeth to form a multi-phase winding, which forms a complete magnetic circuit with the permanent magnets on the rotor structure.

[0054] Specifically, in this embodiment, a rubber-coated bracket 20 is provided to cover the stator core 10. When winding, the enameled wire is routed on the outer surface of the rubber-coated bracket 20 without contacting the stator core 10, thereby playing an insulating role. Specifically, the rubber-coated bracket 20 fits the inner surface of the stator core 10 and protrudes at both ends to cover the inner surface and two end faces of the stator core 10. On this basis, the rubber-coated bracket 20 partially protrudes at both ends of the stator core 10, which can shield and protect the ends of the coil.

[0055] like Figure 3 and Figure 4 As shown, in this embodiment, one end of the rubber-coated bracket 20 is set to be thicker so as to form an end face with a certain width, so as to facilitate the arrangement of a wiring base 21, so as to facilitate the enameled wire to wind half a circle around the stator core 10, and to wind the coils on the two winding convex teeth 12 of the same winding tooth group.

[0056] Furthermore, n groups of wiring grooves with different depths are set on the wiring base 21 corresponding to the number of winding tooth groups. When each group of winding tooth groups is wound, the enameled wires of different windings are arranged in wiring grooves 211 with different depths, and the wires are arranged at different heights, so that the enameled wires that bypass the rubber-coated bracket 20 are arranged in an alternating manner, avoiding the situation of overlapping wire arrangements, improving the orderliness of the wiring design on the stator structure of the high-speed motor, and helping to reduce wear and maintain the original insulation and voltage resistance level of the enameled wire.

[0057] Specifically, in this embodiment, the number of wiring slot groups is equal to the number of winding tooth groups, and the number of winding convex teeth 12 is equal to the number of routing slots 211. Therefore, a routing slot 211 is correspondingly arranged next to each winding convex tooth 12 to facilitate the introduction or extraction of the enameled wire. In particular, the depths of the two routing slots 211 in the same wiring slot group are equal, so when routing between the two winding convex teeth 12 of the same winding tooth group, the enameled wire is routed along the circumference of the routing base 21 without tilting or misalignment, and the enameled wires wound on different winding tooth groups are spatially separated, thereby reducing mutual interference, avoiding overlap, improving the orderliness of the wiring, increasing the accuracy of the winding, protecting the outer skin of the enameled wire, and improving the production yield of the stator structure of the high-speed motor.

[0058] Exemplarily, the stator structure of the high-speed motor disclosed in this embodiment can be set with 6 winding convex teeth 12 to facilitate the formation of a three-phase winding, that is, the number of winding tooth groups is 3 groups. The number of wiring slot groups is adaptively set to 3 groups, with a total of 6 wiring slots 211, which are evenly arranged at intervals of 60° on the wiring base 21, wherein the depths of every two opposing wiring slots 211 are equal. When 3 enameled wires are used for winding operations respectively, they pass through the 3 wiring slot groups respectively without contacting each other, thereby rationally utilizing the space on the wiring base 21, improving the winding accuracy, reducing the mutual wear between the enameled wires, and improving the production yield of the stator structure of the high-speed motor.

[0059] It should be noted that the stator structure of the high-speed motor disclosed in this embodiment is not limited to this. The number of winding teeth 12 can be set to other numbers according to different production requirements. When other numbers of winding teeth 12 are set on the stator core 10, the number of wiring grooves 211 can also be adaptively adjusted. As long as the technical effect disclosed in this application can be achieved, it should also be within the scope of protection of this application as an equivalent replacement of the concept of the present invention.

[0060] In summary, by arranging the enameled wires in wiring slot groups of different depths, the production yield is improved, and the performance and life of the stator structure of the high-speed motor are improved. In addition, multiple groups of cross-wires are wound across the outer surface of the wiring base 21, avoiding the cross-wires from being suspended in the air.

[0061] like Figure 4 As shown, as an implementation of this embodiment, it is disclosed that the stator core 10 includes an annular yoke 11 and the winding teeth 12 arranged on the inner side of the yoke 11, and the winding teeth 12 are provided in plurality, and the plurality of winding teeth 12 are arranged in a ring shape on the inner wall of the yoke 11.

[0062] In this embodiment, the winding teeth 12 and the yoke 11 can be integrally formed, and the structure of the stator core 10 is stable. The plurality of winding teeth 12 are evenly arranged at a certain interval. For example, if the number of winding teeth 12 is 6, the interval between two adjacent winding teeth 12 is 60°.

[0063] Moreover, in the present embodiment, every two winding teeth 12 arranged at an interval of 180° form a group, and during winding, an enameled wire is wound together on the outer side of the same group of winding teeth to form a single-phase winding; when 6 winding teeth 12 are provided, three enameled wires are used for winding to form a three-phase winding of the brushless motor, which is beneficial to improving the working performance of the motor and increasing the working stability.

[0064] For example Figure 4 As shown, the rubber-coated bracket 20 includes an annular body 22 and a winding portion 23. The annular body 22 is arranged to fit the inner wall of the yoke 11; the wiring base 21 is arranged at the end of the annular body 22; the winding portion 23 is connected to the annular body 22, and is covered on the winding convex teeth 12 for winding the enameled wire.

[0065] The rubber-coated bracket 20 disclosed in this embodiment is made of insulating plastic material, and the annular body 22 and the winding part 23 are respectively attached to the surface of the yoke 11 and the winding convex teeth 12, so as to wrap the coil and separate the coil from the stator core 10 to avoid short circuit. Specifically, the annular body 22 extends from the inner surface of the yoke 11 to the end surfaces at both ends, and does not cover the outer surface of the yoke 11; the winding part 23 extends from the connection position between the winding convex teeth 12 and the yoke 11, and an opening is formed at the far end of the winding part 23 away from the annular body 22. The end face shape of the winding convex teeth 12 matches the shape of the opening, and part of it protrudes out of the opening. The rubber-coated bracket 20 has a high degree of structural adaptability with the stator core 10, and is connected into one after assembly, and the structure is stable.

[0066] Specifically, the wiring base 21 disclosed in this embodiment is integrally formed with the annular body 22, and the wiring base 21 is arranged in an annular shape and is coaxially arranged with the annular body 22. The annular body 22 is arranged to fit the inner wall of the stator core 10, so the plurality of pins 30 arranged in an annular shape on the wiring base 21 are coaxially arranged with the plurality of winding convex teeth 12 on the stator core 10, which is conducive to alignment and facilitates subsequent wiring.

[0067] like Figure 3 , Figure 4 and Figure 5 As shown, the stator structure of the high-speed motor includes a plurality of pins 30, and the pins 30 are arranged on one end of the wiring base 21 away from the annular body 22; and the projection of the pins 30 on the annular body 22 is located at the position where the winding part 23 and the annular body 22 are connected.

[0068] During the winding process of the stator structure of the high-speed motor disclosed in this embodiment, the wire ends are first wound around the pins 30, then led from the pins 30 to the rubber-coated bracket 20, and then led to the corresponding winding part 23. The pins 30 play a role in assisting positioning and conducting the external circuit. When the projection of the pins 30 is located at the root of the winding part 23, that is, the position where the winding part 23 is connected to the annular body 22, the distance between the pins 30 and the winding part 23 is the shortest, and the routing path of the wire body during winding is the shortest, which is conducive to improving the winding efficiency and saving wiring materials.

[0069] Specifically, in another implementation of the present embodiment, a reinforcing boss (not shown in the figure) is provided at the root of the pin 30, which can increase the contact area between the pin 30 and the wiring base 21, reduce the shaking of the pin 30, and increase stability.

[0070] like Figure 5 As shown, as another implementation of this embodiment, it is disclosed that a plurality of planes 221 arranged in a ring shape are provided on the inner wall of the annular body 22 , and the winding portion 23 is provided at the central position of the plane 221 .

[0071] Multiple layers of enameled wire are wound on the stator structure of the high-speed motor to form coils. In order to increase the regularity of the wiring, it is generally wound layer by layer along the inner wall of the annular body 22. Since the inner surface of the stator structure of the existing high-speed motor is arc-shaped, when the last layer of coil is wound, the previous layer of coil will tend to be squeezed toward the root of the tooth. The enameled wire at the root of the tooth is squeezed, which can easily cause damage to the paint, resulting in poor insulation and voltage resistance of the enameled wire.

[0072] In this embodiment, a plurality of flat contact surfaces are provided on the inner surface of the annular body 22, as the plane 221. The plane 221 extends along the tangent direction of the annular body 22 and is located at the center of the plane 221. Therefore, when the coil is wound, it fits the plane 221 and has no tendency to be centrally squeezed. The coils of each layer are arranged neatly, beautifully and stably, thereby reducing the damage caused by the stacking of the coils, which is conducive to improving the production yield of the motor product.

[0073] like Figure 4 and Figure 6 As shown, as another implementation of this embodiment, it is disclosed that the winding tooth 12 includes a connecting section 121 and a step section 122, one side of the connecting section 121 is connected to the yoke 11, and the other side extends toward the center position of the yoke 11 and is provided with the step section 122; the step section 122 is fan-shaped, and the width of the step section 122 is greater than the width of the connecting section 121.

[0074] The stator core 10 disclosed in this embodiment is annular as a whole, and the inner side protrudes to form a plurality of winding convex teeth 12, so a rubber-coated bracket 20 is provided on the inner side, which is not convenient to produce by a separate manufacturing and then assembling method, and a mold injection molding can be used to directly mold the rubber-coated bracket 20 on the inner side of the stator core 10. The rubber-coated bracket 20 is made of plastic material, and during the injection molding process, the stator core 10 needs to be fixed in the mold, and then the rubber-coated bracket 20 is directly molded on the surface of the stator core 10 by injecting material.

[0075] Specifically, in this embodiment, a connecting section 121 is provided to extend toward the center line of the stator structure of the high-speed motor to wind the coil; a fan-shaped, widened step 122 is provided at the end of the connecting section 121, so that when the rubber-coated bracket 20 is injection molded, the step 122 abuts against the mold, thereby stabilizing the stator core 10 and reducing displacement during the injection molding process, which is beneficial to manufacturing the rubber-coated bracket 20 with uniform thickness, and further improving the production yield of the stator structure of the high-speed motor.

[0076] Furthermore, in the structural design of the motor, the rotor of the motor is arranged at the center of the stator core 10, and the inner surface of the stage 122 faces the rotor of the motor. In the process of manufacturing the rubber-coated bracket 20, the inner surface of the stage 122 abuts against the mold, so there is no rubber-coated material, making the surface of the stage 122 smooth and free of colloid residue, which can reduce the scratching of the rotor during the assembly and use of the motor, and is conducive to the normal operation of the motor.

[0077] like Figure 3 and Figure 7 As shown, the winding portion 23 is wrapped on the outer surface of the connecting section 121, and one end of the winding portion 23 away from the annular body 22 is turned outward to form a wire blocking segment 231; a wire arrangement groove 232 for accommodating the coil is formed between the wire blocking segment 231 and the annular body 22.

[0078] The wire arrangement slot 232 disclosed in this embodiment is used to accommodate multiple layers of enameled wires to form a coil with a certain thickness. The wire blocking segment 231 is provided to form a side constraint, thereby preventing the coil in the wire arrangement slot 232 from slipping off from the side and disintegrating, thereby increasing the structural stability of the stator structure of the high-speed motor and helping to extend the service life.

[0079] Specifically, the cross-sectional shape of the connecting section 121 disclosed in another implementation of this embodiment is a rounded rectangle, and the corners of the connecting section 121 are set to be rounded to increase the smoothness of the surface. The winding portion 23 is formed by rubber coating on the surface of the connecting section 121, so that the outer surface of the winding portion 23 is smooth, and when the enameled wire is wound, there will be no extrusion at the corner, which avoids damaging the outer skin of the enameled wire and also avoids crushing the rubber-coated bracket 20, and maintains the insulation state; at the same time, the local pressure concentration is reduced, so that the internal resistance of the coil is reduced, which is conducive to reducing the heating of the motor and is conducive to the long-term use of the motor in the working state.

[0080] like Figure 6 As shown, as another implementation of this embodiment, it is disclosed that at least one positioning groove 13 is provided on the outer surface of the yoke 11, and the cross-sectional shape of the positioning groove 13 is rectangular.

[0081] In this embodiment, a positioning slot 13 is provided to facilitate fixing the stator core 10 from the outside. Specifically, when processing the rubber-coated bracket 20, the stator core 10 needs to be fixed in the mold, and then the surface of the stator core 10 is coated with plastic material to make the rubber-coated bracket 20, so a clamping piece can be provided on the mold corresponding to the positioning slot 13, and the stability of the connection between the stator core 10 and the mold can be increased by clamping and fixing, thereby avoiding the displacement problem during the injection molding process and improving the production yield of the rubber-coated bracket 20.

[0082] In addition, the stator structure of the high-speed motor needs to be fixed from the outside during winding, and the outer surface of the stator core 10 is smooth, so a positioning slot 13 is provided to facilitate clamping, thereby improving the stability of the stator core 10 and improving the winding accuracy.

[0083] Specifically, the cross-sectional shape of the positioning slot 13 of this embodiment is rectangular, so that it can be more closely contacted with the external convex structure when in contact and mating. Compared with the bayonet with a semicircular cross-sectional shape, the positioning slot 13 disclosed in this embodiment can reduce the assembly gap and further improve the stability of the stator core 10 during the processing.

[0084] Specifically, in another implementation of the present embodiment, it is disclosed that the middle positioning slot 13 is in the shape of a bar, extending along the length direction of the stator core 10, and a plurality of positioning slots 13 can be provided, which are arranged at circumferential intervals along the stator core 10 to increase the contact positions that can be clamped and fixed, and further facilitate the restraint of the stator core 10.

[0085] For example Figure 7 As shown, as another implementation of this embodiment, a plurality of parallel wiring channels 212 are provided on the outer wall of the wiring base 21, and the two ends of the wiring channels 212 are respectively connected to two wiring grooves 211 in a group of the wiring grooves.

[0086] In this embodiment, the enameled wire is further constrained by providing a wiring channel 212. When winding, after winding a coil, the enameled wire is led out of the wiring groove 211, arranged in the wiring channel 212, and guided to another wiring groove 211 of the same wiring groove group to avoid the enameled wire from shifting, further ensuring that the enameled wires of different windings are independent of each other and do not interfere with each other, which facilitates the winding operation.

[0087] like Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, as another implementation of this embodiment, it is disclosed that the plug pin 30 includes a wire end winding needle 31, a wire end winding needle 32 and a grounding needle 33, the wire end winding needle 31 is arranged in a ring shape on the wiring base 21, and is used to wind the wire end of the coil; the wire end winding needle 32 is used to wind the wire end of the coil; the grounding needle 33 contacts the stator core 10 for grounding; the number of the wire end winding needles 31 is equal to the number of the winding tooth groups, and the number of the wire end winding needles 32 is less than the number of the winding tooth groups; the wire ends of the coils on each group of the winding tooth groups are respectively connected to one of the wire end winding needles 31, and the wire ends of the coils on at least two groups of the winding tooth groups are commonly connected to one of the wire end winding needles 32.

[0088] The pin 30 disclosed in this embodiment is fixed on the wiring base 21 and is used to wind the enameled wire to conduct the wire head or wire tail of the coil and connect to an external circuit.

[0089] First, the wire end winding needle 31 is set according to the number of winding tooth groups, so that the wire end of each winding has a fixed position, and the wire is arranged in the wiring groove 211 matching each winding, so that multiple enameled wires are separated, so as to facilitate accurate winding of the enameled wire and improve winding accuracy.

[0090] Secondly, in this embodiment, the wire tails of the multi-phase windings are connected to a wire tail winding pin 32 by bypassing the outer surface of the wiring base 21, so as to reduce the number of current output ports and facilitate external circuit connection. In this embodiment, by reducing the number of wire tail winding pins 32, the free space on the wiring base 21 can be increased to facilitate the setting of the grounding pin 33 on the wiring base 21. The grounding pin 33 can be connected to the stator core 10 through the wiring, or it can directly penetrate the wiring base 21 and contact the stator core 10; the grounding pin 33 is externally connected to the ground wire, thereby playing the role of electromagnetic shielding, improving the safety and stability of the high-speed motor during operation.

[0091] Specifically, the number of grounding pins 33 and tail winding pins 32 on the wiring base 21 can be flexibly set. For example, if the number of winding tooth groups is x, the number of head winding pins 31 is x, the number of tail winding pins 32 is y, and the number of grounding pins 33 is (xy). Wherein, x and y are both positive integers, and y is less than x.

[0092] In this embodiment, the total number of pins 30 is 2x, which is equal to the total number of winding teeth 12, so a pin 30 is set at the connection position between each winding part 23 and the annular body 22, so as to rationally utilize the space on the wiring base 21 and facilitate winding and production.

[0093] For example, Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, the stator core 10 is provided with six winding convex teeth 12, and three-phase windings are formed after winding six coils; six pins 30 can be provided, and three of the six pins 30 are divided into wire head winding pins 31, one is a wire tail winding pin 32, and the last two are grounding pins 33, so as to reasonably utilize the space of the stator structure of the high-speed motor to form a star connection of the three-phase winding. Only four pins 30 are needed for the three-phase winding, and the remaining two pins 30 can be connected to the stator core 10, which increases the shielding effect and improves the performance of the product while maintaining the normal use of the stator structure of the high-speed motor.

[0094] For example Figure 5As shown, as another implementation of this embodiment, it is disclosed that the wiring base 21 is also provided with a wire outlet groove 213, and the wire outlet groove 213 and the wiring groove 211 are respectively arranged on both sides of the pin 30, and the wire outlet groove 213 is used to guide the wire tail of the coil on the winding tooth group to the wire tail winding needle 32.

[0095] Specifically, the winding path adopted by each phase winding is to first wind a wire end winding needle 31, then wind the coil on the winding part 23, and lead it out from a wiring groove 211 to the outside of the wiring base 21, and then wind half a circle around the wiring base 21 to the other opposite winding part 23; introduce it from the other wiring groove 211 to the inner side of the wiring base 21, wind the coil on the opposite winding part 23, and then lead it out from a wire outlet groove 213 to the outside of the wiring base 21, and bypass the outer surface of the wiring base 21 and wind it on the wire tail winding needle 32.

[0096] In this embodiment, a wire outlet groove 213 is provided on the wiring base 21 to lead out the wire tail of the coil separately, and the wire head and wire tail of each coil are separated to avoid mutual friction or compression, thereby further improving the winding accuracy on the stator structure of the high-speed motor and improving the motor yield.

[0097] like Fig.13 As shown, as another implementation of this embodiment, an assembly platform is formed on the outer side of the wiring base 21; the stator structure of the high-speed motor includes an end cover 50, which is connected to the rubber-coated bracket 20 and is arranged on the assembly platform to cover the wiring base 21.

[0098] In this embodiment, an assembly platform is extended from the outside of the wiring base 21 to support the end cover 50 .

[0099] One end of the stator structure of the high-speed motor forms the assembly channel and docks with the motor rotor structure 40; the other end is provided with an end cover 50. The end cover 50 covers the wiring base 21, thereby hiding the enameled wire and the plug pin 30 on the wiring base 21, and plays a protective role, so that the process of dispensing packaging can be replaced, the processing and manufacturing process of the motor can be simplified, and the stability of the stator structure of the high-speed motor during use can be improved; the protection function is played through physical isolation, the operation is convenient, and the protection effect is good.

[0100] For example Fig.13 As shown, as another implementation of this embodiment, a sinking groove is formed on the end surface of the end cover 50 away from the rubber-coated bracket 20, and the sinking groove is used to accommodate the control board 60.

[0101] The control board 60 disclosed in this embodiment includes but is not limited to a printed circuit board, which is used to connect the stator structure of the high-speed motor to control the start and stop of the high-speed motor. The control board 60 is arranged on the end cover 50, and the space of the stator structure is reasonably utilized, so that the structure of the high-speed motor is more compact, and it is convenient to manufacture and transport.

[0102] Specifically, a perforation may be provided at a position corresponding to the plug pin 30 on the end cover 50, and the plug pin 30 enters the sinking groove through the perforation, so that the plug pin 30 is connected to the control board 60 to form a complete circuit. By arranging the control board 60 on the end cover 50 and directly conducting with the plug pin 30, the wiring process is omitted, which is conducive to simplifying the structure of the high-speed motor and saving production costs.

[0103] like Fig.14 As shown, as another implementation of this embodiment, a winding method for a stator structure of a high-speed motor is also disclosed, which is used for the stator structure of any high-speed motor as described above; wherein the winding method includes:

[0104] S100, moving the stator structure of the high-speed motor to be wound to the winding station.

[0105] The winding method disclosed in this embodiment can be automatically completed by a winding machine. Before winding, the stator structure to be wound is adjusted and transported to the winding station so that the winding machine can align the wiring base 21 for automatic processing.

[0106] S200, numbering the wiring slot groups from 1 to n in descending order of depth value; and setting the winding heights of the enameled wires based on the depth values ​​of the n wiring slot groups, recorded as the 1st winding height to the nth winding height, respectively.

[0107] In the automated winding preparation stage, the number of windings is determined based on the stator structure of the high-speed motor, and the corresponding numbers of each winding tooth group are determined. Each wiring slot group is also numbered to establish a one-to-one correspondence; so that the winding can be carried out in an orderly manner in the numbering sequence later.

[0108] The winding machine can use the placement position of the stator structure of the high-speed motor as a reference to calculate the height at which the wire feeding end should be each time the wire is wound, and then record it as multiple winding heights.

[0109] S300, winding the n groups of winding tooth groups in sequence according to the numbering sequence of the wiring groove groups.

[0110] Automatically wind n groups of winding teeth according to the numbering sequence, wherein the height of the m-th winding is the m-th winding height; m is an integer, satisfying 1≤m≤n.

[0111] Specifically, the winding method disclosed in this embodiment is numbered based on the depth of the wiring groove group, and then the winding is performed in sequence according to the numbering order. In actual operation, the winding is performed in sequence according to the depth of the wiring groove 211 from deep to shallow, so that the height of each subsequent winding is higher than the height of the previous winding, so it will not cross or overlap with the enameled wire wound previously, so that the enameled wire on the stator structure is arranged in an orderly manner and separated from each other, thereby reducing the internal resistance of the high-speed motor and reducing the wear of the enameled wire, which is beneficial to improving product performance and extending product service life.

[0112] In summary, the present application discloses a stator structure of a high-speed motor, wherein the stator structure of the high-speed motor includes a stator core 10 and a rubber-coated bracket 20, wherein an assembly channel for assembling a rotor structure is formed in the center of the stator core 10; n groups of winding tooth groups are arranged in a ring shape around the assembly channel on the inner surface of the stator core 10; n is an integer greater than 1; the rubber-coated bracket 20 is coated on the stator core 10; an annular wiring base 21 is arranged at the end of the rubber-coated bracket 20, and the wiring base 21 protrudes along the axial direction of the stator core 10; n groups of wiring groove groups with different depths are arranged on the wiring base 21; each group of the winding tooth group includes two winding convex teeth 12 arranged at an interval of 180°; each group of the wiring groove group includes two wiring grooves 211 with the same depth arranged at an interval of 180°. The stator structure of the high-speed motor disclosed in the present embodiment is to be provided with a multi-phase winding. By arranging the enameled wires wound by different winding tooth groups in wiring groove groups of different depths, the enameled wires are staggered with each other when they pass around the surface of the rubber-coated bracket 20, thereby avoiding the overlapping of the wires, improving the orderliness of the wiring design on the stator structure of the high-speed motor, and being beneficial to maintaining the original insulation and withstand voltage level of the enameled wires, improving the production yield, and further improving the performance and life of the stator structure of the high-speed motor.

[0113] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0114] It should be noted that the present invention takes the stator structure of a high-speed motor and its winding method as an example to introduce the specific structure and working principle of the present invention, but the application of the present invention is not limited to the stator structure of a high-speed motor and its winding method, and can also be applied to the production and use of other similar workpieces.

[0115] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0116] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A stator structure of a high-speed motor, characterized in that: The stator structure of the high-speed motor comprises: The stator core has an assembly channel for assembling the rotor structure formed in the center; n groups of winding teeth are arranged in a ring shape around the assembly channel on the inner surface of the stator core; n is an integer greater than 1; A rubber-coated bracket is coated on the stator core; an annular wiring base is provided at the end of the rubber-coated bracket, and the wiring base protrudes along the axial direction of the stator core; and n groups of wiring grooves with different depths are provided on the wiring base; Wherein, each group of the winding tooth groups includes two winding convex teeth arranged at an interval of 180°; each group of the wiring groove groups includes two wiring grooves with the same depth arranged at an interval of 180°.

2. The stator structure of the high-speed motor according to claim 1, characterized in that: The stator core comprises an annular yoke and the winding protruding teeth arranged on the inner side of the yoke, a plurality of the winding protruding teeth are provided, and the plurality of the winding protruding teeth are arranged in an annular shape on the inner wall of the yoke; The rubber-coated bracket comprises an annular body and a winding part, wherein the annular body is arranged in contact with the inner wall of the yoke; the wiring base is arranged at the end of the annular body; the winding part is connected to the annular body, covered on the winding convex teeth, and used for winding the enameled wire; Among them, the stator structure of the high-speed motor includes a plurality of pins, and the pins are arranged on one end of the wiring base away from the annular body; and the projection of the pins on the annular body is located at the position where the winding part and the annular body are connected.

3. The stator structure of the high-speed motor according to claim 2, characterized in that: The winding convex tooth comprises a connecting section and a step section, one side of the connecting section is connected to the yoke, and the other side extends toward the center of the yoke and is provided with the step section; the step section is fan-shaped, and the width of the step section is greater than the width of the connecting section; The winding portion is wrapped on the outer surface of the connecting section, and one end of the winding portion away from the annular body is turned outward to form a wire blocking section; a wire arrangement groove for accommodating the coil is formed between the wire blocking section and the annular body.

4. The stator structure of the high-speed motor according to claim 2, characterized in that: A plurality of planes arranged in a ring shape are arranged on the inner wall of the ring-shaped body, and the winding part is arranged at the central position of the planes.

5. The stator structure of the high-speed motor according to claim 2, characterized in that: At least one positioning groove is disposed on the outer surface of the yoke, and the cross-section of the positioning groove is rectangular.

6. The stator structure of the high-speed motor according to claim 2, characterized in that: The plug pins include a wire head winding pin, a wire tail winding pin and a grounding pin. The wire head winding pin is arranged in a ring shape on the wiring base and is used to wind the wire head of the coil; the wire tail winding pin is used to wind the wire tail of the coil; the grounding pin contacts the stator core and is used for grounding; Among them, the number of the thread end winding needles is equal to the number of the winding tooth groups, and the number of the thread tail winding needles is less than the number of the winding tooth groups; the thread ends of the coils on each group of the winding tooth groups are respectively connected to one of the thread end winding needles, and the thread tails of the coils on at least two groups of the winding tooth groups are commonly connected to one of the thread tail winding needles.

7. The stator structure of the high-speed motor according to claim 6, characterized in that: The wiring base is also provided with a wire outlet groove, and the wire outlet groove and the wiring groove are respectively arranged on both sides of the insertion pin, and the wire outlet groove is used to guide the wire tail of the coil on the winding tooth group to the wire tail winding needle.

8. The stator structure of the high-speed motor according to claim 1, characterized in that: An assembly platform is formed on the outer side of the wiring base; the stator structure of the high-speed motor includes an end cover, which is connected to the rubber-coated bracket and is arranged on the assembly platform to cover the wiring base.

9. The stator structure of the high-speed motor according to claim 8, characterized in that: A sinking groove is formed on the end surface of the end cover which is away from the rubber-coated bracket, and the sinking groove is used to accommodate the control board.

10. A winding method for a stator structure of a high-speed motor, used for the stator structure of a high-speed motor as claimed in any one of claims 1 to 9; characterized in that: The winding method comprises: Move the stator structure of the high-speed motor to be wound to the winding station; The wiring slot groups are numbered from 1 to n in descending order of depth value; and Setting the winding height of the enameled wire based on the depth values ​​of the n wiring groove groups, which are recorded as the first winding height to the nth winding height respectively; The n groups of winding tooth groups are wound in sequence according to the numbering sequence of the wiring slot groups; wherein the height of the m-th winding is the m-th winding height; m is an integer satisfying 1≤m≤n.

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