Stator structure of high-speed motor, high-speed motor and blower
By using a rubber-coated bracket and pin structure in the stator structure of the high-speed motor, the problem of winding overlap was solved, the production yield and performance of the motor were improved, and the service life of the motor was extended.
Patent Information
- Application Number
- CN202423292791.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In the existing high-speed motor stator structure, the enameled wire is prone to overlap and wear during the winding process, which affects the production yield and performance of the motor.
By employing a rubber-coated bracket and pin structure, and setting an annular wiring base and wiring grooves of different depths on the stator core, and alternately setting pins, the enameled wires of different windings are ensured to be routed in wiring grooves of different depths, avoiding overlap and improving the orderliness and stability of wiring.
This effectively avoids the overlapping and wear of enameled wires, maintains insulation and withstand voltage levels, and improves production yield, motor performance, and lifespan.
Smart Images
Figure CN223729534U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to high -speed motor technical field especially a kind of stator structure of high -speed motor, high -speed motor and hair dryer. BACKGROUND
[0002] Motor is a kind of equipment using electromagnetic induction principle to convert electric energy into mechanical energy, is widely used in industrial production and the various electrical appliances required in life.In the field of high-speed motor, the speed of high-speed motor can reach 100000 revolutions per minute or more, with high efficiency, small size and other advantages, widely used.At present, high-speed motor is all internal rotor structure, fixed stator is arranged in shell, the middle of stator is provided with through hole, to assemble rotor;Stator is wound coil, when coil is electrified, rotating magnetic field is generated, and then drive magnet on rotor to rotate.Specifically, the inside of existing stator structure is often convex to form a plurality of winding teeth, every two interval 180 ° setting winding teeth is a group, on several groups of winding teeth winding enameled wire, to make multi-phase winding.
[0003] However, the existing winding process is first wound enameled wire on a winding tooth, after making coil, moves to the opposite winding tooth on the outer surface of stator structure to wind, to make the second coil, to constitute a phase winding.On this basis, it needs to repeat winding for several times to make multi-phase winding.From the overall winding process, enameled wire is wound from the outer surface of stator structure for several times, easy to produce superposition, wear and tear problem, easy to cause the damage of enameled wire surface, thereby affecting the performance and production yield of motor product.
[0004] Therefore, prior art still needs to be improved and developed. INVENTION CONTENTS
[0005] In view of the above deficiencies of prior art, the purpose of the utility model is to provide a kind of stator structure of high -speed motor, high -speed motor and hair dryer, to solve the problem that enameled wire on the outer surface of existing motor stator is easy to produce superposition, affect the production yield, use performance and service life of motor.
[0006] The technical scheme of the utility model is as follows:
[0007] A kind of stator structure of high -speed motor, wherein, including stator core, rubber-coated support and several pins, the rubber-coated support is covered on the stator core;The end of the rubber-coated support is provided with annular wiring base, the wiring base is protruding along the axial direction of the stator core;At least two wiring grooves of different depths are provided on the wiring base;Several pins are all inserted on the wiring base;The pin and the wiring groove are alternately arranged along the circumferential direction of the wiring base.
[0008] The stator structure of the high-speed motor, wherein the stator core comprises a yoke portion in a ring shape and a tooth portion provided on the inner side of the yoke portion, the tooth portion is provided with a plurality of tooth portions arranged in a ring shape on the inner wall of the yoke portion; the encapsulation support comprises a ring-shaped main body and a winding portion, the ring-shaped main body is arranged on the inner wall of the yoke portion; the winding portion is connected with the ring-shaped main body and is wrapped on the tooth portion for winding the enameled wire; the wire routing base is provided at the end of the ring-shaped main body; the pin is provided at one end of the wire routing base away from the ring-shaped main body; and the projection of the pin on the ring-shaped main body is located at the position where the winding portion is connected with the ring-shaped main body.
[0009] The stator structure of the high-speed motor, wherein the inner wall of the ring-shaped main body is provided with a plurality of planes arranged in a ring shape, and the winding portion is provided at the central position of the plane.
[0010] The stator structure of the high-speed motor, wherein the tooth portion comprises a connecting section and a platform section, one side of the connecting section is connected with the yoke portion, the other side extends towards the center of the yoke portion, and the platform section is provided; the platform section is in the shape of a sector, and the width of the platform 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 ring-shaped main body is turned outward to form a wire blocking section; the wire blocking section and the ring-shaped main body form a wire arranging groove for accommodating the coil.
[0011] The stator structure of the high-speed motor, wherein the number of tooth portions is even, and every two tooth portions arranged at an interval of 180° form a winding tooth group; the number of wire routing grooves is even, and every two wire routing grooves arranged at an interval of 180° form a wire routing groove group, the depths of the two wire routing grooves in the wire routing groove group are equal; the number of winding tooth groups is equal to the number of wire routing groove groups.
[0012] The stator structure of the high-speed motor, wherein the outer wall of the wire routing base is provided with a plurality of wire routing channels arranged in parallel, and the two ends of the wire routing channel are respectively connected with the two wire routing grooves in a wire routing groove group.
[0013] The high-speed motor stator structure, wherein the pin includes a line head winding pin, a line tail winding pin and a grounding pin, the line head winding pin is annularly arranged on the wiring base and used for winding the line head of the coil, the line tail winding pin is used for winding the line tail of the coil, the grounding pin is in contact with the stator core and used for grounding, the number of the line head winding pin is equal to the number of the winding tooth group, the number of the line tail winding pin is less than the number of the winding tooth group, the line head of the coil on each group of the winding tooth group is connected with one line head winding pin, and the line tail of the coil on at least two groups of the winding tooth group is connected with one line tail winding pin.
[0014] The high-speed motor stator structure, wherein the number of the winding tooth group is m, the number of the line tail winding pin is n, and the number of the grounding pin is (m-n); the wiring base is further provided with a wire outlet groove for guiding the line tail of the coil on the winding tooth group to the line tail winding pin, and the number of the wire outlet groove is (m-n); wherein m and n are positive integers, and n is less than m.
[0015] The high-speed motor stator structure, wherein the number of the winding tooth group is m, the number of the line tail winding pin is n, and the number of the grounding pin is (m-n); the wiring base is further provided with a wire outlet groove for guiding the line tail of the coil on the winding tooth group to the line tail winding pin, and the number of the wire outlet groove is (m-n); wherein m and n are positive integers, and n is less than m.
[0016] The high-speed motor stator structure, wherein the number of the winding tooth group is m, the number of the line tail winding pin is n, and the number of the grounding pin is (m-n); the wiring base is further provided with a wire outlet groove for guiding the line tail of the coil on the winding tooth group to the line tail winding pin, and the number of the wire outlet groove is (m-n); wherein m and n are positive integers, and n is less than m.
[0017] Compared with the prior art, the embodiments of the utility model have the following advantages:
[0018] The high-speed motor stator structure disclosed by the utility model is provided with multi-phase windings, the enameled wires with different windings are arranged in the wiring grooves with different depths, the enameled wires are staggered when passing the surface of the rubber coating support, the situation of winding stacking is avoided, the order of the wiring design of the high-speed motor stator structure is improved, the original insulation and voltage resistance level of the enameled wire are maintained, the production yield is improved, and the service performance and service life of the high-speed motor stator structure are improved. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments in the utility model, and other drawings can be obtained according to these drawings without the creative labor for the ordinary skilled in the art.
[0020] Figure 1It is the top view of the winding state of the stator structure of the high-speed motor in the utility model;
[0021] Figure 2 It is the side view of the winding state of the stator structure of the high-speed motor in the utility model;
[0022] Figure 3 It is the structural schematic view of the stator structure of the high-speed motor in the utility model;
[0023] Figure 4 It is the structural explosion view of the stator structure of the high-speed motor in the utility model;
[0024] Figure 5 It is the top view of the stator structure of the high-speed motor in the utility model;
[0025] Figure 6 It is the structural schematic view of the stator core in the utility model;
[0026] Figure 7 It is the structural schematic view of the rubber-coated support in the utility model;
[0027] Figure 8 It is the winding path schematic view of the phase winding in the utility model;
[0028] Figure 9 It is the winding path schematic view of the another phase winding in the utility model;
[0029] Figure 10 It is the winding path schematic view of the still another phase winding in the utility model;
[0030] Figure 11 It is the winding path schematic view of the three-phase winding in the utility model;
[0031] Figure 12 It is the side view of the winding completion state of the stator structure of the high-speed motor in the utility model;
[0032] Figure 13 It is the structural schematic view of the high-speed motor in the utility model.
[0033] Wherein, 10, the stator core;11, the yoke part;12, the tooth part;121, the connecting section;122, the stage;13, the positioning bayonet;20, the rubber-coated support;21, the wiring base;211, the wiring groove;212, the wiring channel;213, the outlet groove;22, the annular main body;221, the plane;23, the winding part;231, the wire blocking section;232, the wire arranging groove;30, the pin;31, the wire head winding needle;32, the wire tail winding needle;33, the grounding needle;40, the motor rotor structure;50, the end cover;60, the control panel. DETAILED DESCRIPTION
[0034] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the person skilled in the art without creative labor fall within the scope of protection of the present application.
[0035] The stator core of the high-speed motor in the prior art is an inner rotor structure, and is basically composed of six teeth, and a group of coils is wound on each tooth to form a three-phase winding.
[0036] As shown in FIGS. 1, 2 and 3, the specific winding process is as follows: Figure 1 Figure 2 Before starting winding, the six teeth are numbered in a clockwise order, wherein the No. 1 tooth and the No. 4 tooth are oppositely arranged, the No. 2 tooth and the No. 5 tooth are oppositely arranged, and the No. 3 tooth and the No. 6 tooth are oppositely arranged.
[0037] First, the No. 1 tooth is wound, and the wire is lowered from the right side of the No. 1 tooth (indicated by the red wire in the middle), then the wire is wound out from the left side of the No. 1 tooth, and then the wire is wound down from the right side of the No. 1 tooth, and the anticlockwise circular winding action is performed in sequence; when the winding on the No. 1 tooth is completed, the wire is led out from the left side of the No. 1 tooth, so that the wire head and the wire tail of the coil are kept at the same end of the stator core.
[0038] Then, the enameled wire needs to cross the half outer surface of the stator core to reach the No. 4 tooth on the opposite side to be wound. At this time, if the enameled wire is directly led out from the left side of the No. 1 tooth and then passed through the outer surface of the stator core in a clockwise direction to cross to the opposite side, it will interfere with the subsequent winding of the No. 6 tooth, so the wire tail of the coil on the No. 1 tooth needs to be crossed from the end of the No. 1 tooth to the right side of the No. 1 tooth, folded back on the outer surface of the stator core, and crossed to the No. 4 tooth in an anticlockwise direction. Figure 1 Then, when the wire head reaches the No. 4 tooth, the wire is lowered from the right side of the No. 4 tooth, crossed over the bottom of the No. 4 tooth, wound up from the left side of the No. 4 tooth, and then crossed over the end of the No. 4 tooth to return to the right side of the No. 4 tooth, and the winding is performed in this way until the winding on the No. 4 tooth is completed, and the wire tail is led out from the left side of the No. 4 tooth, so that a complete coil is wound, and a phase cross-wire is formed.
[0039] Finally, in the same way, the second phase cross-wire needs to be separated from the first phase cross-wire by 120°, so the second phase cross-wire is wound on the No. 3 tooth first, and then wound on the No. 6 tooth, that is,
[0040]
[0041] Figure 1 The middle blue line is wound in the same way as the first phase cross line, and the third phase cross line also needs to be separated from the second phase cross line by 120°, and the third phase cross line is wound around the No. 2 tooth first, and then wound around the No. 5 tooth, that is Figure 1 The middle green line is wound in the same way as the first phase cross line, so that all three phase cross lines are wound.
[0042] From the above, when winding multiple enameled wires on the existing stator core to form three-phase cross lines, the following problems exist:
[0043] First, the wire head and the wire tail introduced on the first tooth of each phase cross line will contact and squeeze together, which can easily cause damage to the enamel on the surface of the enameled wire, resulting in a decrease in insulation and voltage resistance, causing the coil on this tooth to be defective, thereby affecting the performance and service life of the motor.
[0044] Second, the two coils of each phase cross line need to be connected by a cross line, so there are three cross lines, and each cross line needs to cross the outer surface of the stator core, so on the outer surface of the stator core, two cross lines are stacked together in some areas, and three cross lines are stacked together in some areas. Since the enamel of the enameled wire is very thin, the cross lines are stacked together, which can cause damage to the enamel of the enameled wire, resulting in a decrease in insulation or voltage resistance of the cross line, thereby causing poor insulation and voltage resistance between the cross lines.
[0045] In summary, the existing stator core structure has the problem of easy stacking and squeezing of the wire body during winding, which affects the performance and production yield of the motor product.
[0046] The embodiment provides a stator structure of a high-speed motor, which can orderly separate enameled wires of different windings to avoid damage and improve product yield. For convenience of description, the embodiment of the application exemplarily uses a stator core provided with six teeth for description, but is not exhaustive, and the stator structure of the high-speed motor disclosed in the embodiment of the application can also include a stator core provided with eight teeth, twelve teeth or other number of teeth, which is equivalent replacement of the concept of the utility model, and these embodiments should also be within the scope of protection of the application.
[0047] Referring to Figure 3 , Figure 4 and Figure 5In one embodiment of this utility model application, a stator structure for a high-speed motor is disclosed, comprising a stator core 10, a rubber-coated bracket 20, and a plurality of pins 30. The rubber-coated bracket 20 covers the stator core 10. An annular wiring base 21 is provided at the end of the rubber-coated bracket 20, and the wiring base 21 protrudes along the axial direction of the stator core 10. At least two wiring grooves 211 of different depths are provided on the wiring base 21. The plurality of pins 30 are inserted into the wiring base 21. The pins 30 and the wiring grooves 211 are alternately arranged along the circumferential direction of the wiring base 21.
[0048] The stator structure of the high-speed motor disclosed in this embodiment is used in high-speed motors, including but not limited to high-speed brushless motors in the field of hair dryers.
[0049] Specifically, by covering the stator core 10 with a rubber-coated bracket 20, the enameled wire runs on the outer surface of the rubber-coated bracket 20 during winding, without contacting the stator core 10, thus providing insulation. More specifically, the rubber-coated bracket 20 fits against the inner surface of the stator core 10 and protrudes at both ends to cover the ends of the stator core 10. Simultaneously, the rubber-coated bracket 20 protrudes a certain height at both ends of the stator core 10, forming baffles to shield and protect the ends of the coil.
[0050] In this embodiment, one end of the rubber-coated bracket 20 is provided with a thicker thickness to form an end face with a certain width, thus stably supporting the wiring base 21. Pins 30 are inserted into the wiring base 21. During winding, the wire end is first wrapped around the pin 30, and then led from the pin 30 to the rubber-coated bracket 20, where it is wound into a coil around the stator core 10. The pins 30 serve to assist in positioning and conduct external circuitry.
[0051] like Figure 3 As shown, in one embodiment of this example, 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.
[0052] Specifically, based on the working principle of brushless motors, the stator structure of high-speed motors requires multi-phase windings to form a complete magnetic circuit with the rotor. In this embodiment, enameled wires of different windings are arranged in wiring slots 211 of varying depths and on different planes, thus staggering the enameled wires that bypass the rubber-coated bracket 20. This avoids wire overlap, improves the orderliness of the wiring design on the stator structure of the high-speed motor, helps reduce wear, maintains the original insulation and withstand voltage rating of the enameled wires, improves production yield, and ultimately enhances the performance and lifespan of the stator structure of the high-speed motor. Furthermore, multiple sets of crossover wires are wound across the outer surface of the wiring base 21, preventing the crossover wires from being suspended.
[0053] Specifically, the number of the wire slot 211 disclosed in the embodiment is selected according to actual needs, and corresponds to the number of windings on the stator core 10. For example, three-phase windings are provided on the stator core 10, and each phase winding is wound with a single enameled wire. Therefore, the wire slot 211 is provided with at least three, and the three enameled wires are separated on the three wire arranging planes to reduce mutual contact and avoid interference.
[0054] As shown in Figure 4 As an embodiment of the present embodiment, the stator core 10 includes an annular yoke portion 11 and a plurality of tooth portions 12 arranged on the inner wall of the yoke portion 11. The tooth portions 12 are annularly arranged on the inner wall of the yoke portion 11. The tooth portions 12 and the yoke portion 11 can be integrally formed in the present embodiment, and the structure of the stator core 10 is stable. The plurality of tooth portions 12 are uniformly arranged at a certain interval. For example, if the number of tooth portions 12 is six, the interval between two adjacent tooth portions 12 is 60°.
[0055] In addition, in the present embodiment, every two tooth portions 12 arranged at an interval of 180° form a group, and a single enameled wire is wound on the outer side of the tooth portions 12 in the same group to form a single-phase winding. When there are six tooth portions 12, three enameled wires are used for winding, that is, three-phase windings of the brushless motor are formed, which is beneficial to improve the working performance of the motor and increase the stability of the working effect.
[0056] As shown in Figure 4 and Figure 7 As shown in the present embodiment, the encapsulation support 20 includes an annular body 22 and a winding portion 23. The annular body 22 is arranged on the inner wall of the yoke portion 11. The winding portion 23 is connected with the annular body 22 and encapsulates the tooth portion 12, and is used for winding the enameled wire. The wire base 21 is arranged at the end of the annular body 22. The pin 30 is arranged on the wire base 21 and away from the annular body 22. In addition, the projection of the pin 30 on the annular body 22 is located at the position where the winding portion 23 and the annular body 22 are connected.
[0057] The rubber-coated bracket 20 disclosed in this embodiment is made of insulating plastic material. The annular body 22 and the winding portion 23 are respectively attached to the surfaces of the yoke portion 11 and the toothed portion 12, thereby wrapping the coil and separating it from the stator core 10 to prevent circuit failure. Specifically, the annular body 22 extends from the inner surface of the yoke portion 11 to the end faces at both ends, without covering the outer surface of the yoke portion 11; the winding portion 23 extends from the connection position between the toothed portion 12 and the yoke portion 11, and an opening is formed at the far end of the winding portion 23 away from the annular body 22. The shape of the end face of the toothed portion 12 matches the shape of the opening, and part of it protrudes outside the opening. The rubber-coated bracket 20 has a high structural compatibility with the stator core 10, and after assembly, they are connected as a whole, resulting in a stable structure.
[0058] In this embodiment, the wiring base 21 and the annular body 22 are integrally formed. The wiring base 21 is annular and coaxially arranged with the annular body 22. The annular body 22 is fitted to the inner wall of the stator core 10. Therefore, the plurality of pins 30 arranged in annular on the wiring base 21 are coaxially arranged with the plurality of teeth 12 on the stator core 10, which is beneficial for alignment and facilitates subsequent wiring.
[0059] During the winding process, the wire end is first wrapped around the pin 30, and then led to the corresponding winding part 23. When the projection of the pin 30 is located at the root of the winding part 23, that is, at the position where the winding part 23 connects with the annular body 22, the distance between the pin 30 and the winding part 23 is the shortest, and the wire path is the shortest during winding, which helps to improve winding efficiency and save wiring materials.
[0060] like Figure 5 As shown, in another embodiment of this invention, the inner wall of the annular body 22 is provided with a plurality of planes 221 arranged in a ring, and the winding part 23 is located at the center of the planes 221.
[0061] Multiple layers of enameled wire are wound around the stator of an electric motor to form coils. To increase the regularity of the winding, the wires are typically wound layer by layer against the inner wall of the annular body 22. However, in existing high-speed motor stator structures, the inner surface is curved. When a new layer of coil is wound, the previous layer tends to be compressed towards the tooth root. This compression of the enameled wire at the tooth root can easily damage the enamel, leading to poor insulation and withstand voltage performance. In this embodiment, multiple flat contact surfaces, known as planes 221, are provided on the inner surface of the annular body 22. Planes 221 extend along the tangent of the annular body 22 and are located at the center of plane 221. Therefore, the coils are wound close to plane 221, without the tendency to be compressed. Each layer of coils is arranged neatly, aesthetically, and stably, reducing damage caused by coil stacking and improving the production yield of the motor.
[0062] like Figure 4and Figure 6 As shown, in another embodiment of this invention, the toothed portion 12 includes a connecting segment 121 and a step 122. One side of the connecting segment 121 is connected to the yoke 11, and the other side extends toward the center of the yoke 11, and is provided with the step 122. The step 122 is fan-shaped, and the width of the step 122 is greater than the width of the connecting segment 121.
[0063] The stator core 10 disclosed in this embodiment is generally annular, with multiple protruding teeth 12 on its inner side. Therefore, a rubber-coated bracket 20 needs to be provided on the inner side. Since it is inconvenient to manufacture it separately and then assemble it, it can be produced by injection molding, directly forming the rubber-coated bracket 20 on the inner side of the stator core 10. The rubber-coated bracket 20 is made of plastic material. During the injection molding process, the stator core 10 needs to be fixed in the mold, and then the rubber-coated bracket 20 is formed directly on the surface of the stator core 10 by injecting material.
[0064] Specifically, in this embodiment, the connecting section 121 extends toward the center line of the stator structure of the high-speed motor to wind the coil; a fan-shaped, wide step 122 is provided at the end of the connecting section 121 so that the step 122 can abut against the mold during injection molding of the overmolded bracket 20, thereby stabilizing the stator core 10, reducing displacement during injection molding, which is beneficial to manufacturing an overmolded bracket 20 with uniform thickness, and further improving the production yield of the stator structure of the high-speed motor.
[0065] Furthermore, in the motor's structural design, the rotor is positioned at the center of the stator core 10, and the inner surface of the stage 122 faces the rotor. During the fabrication of the rubber-coated bracket, the inner surface of the stage 122 abuts against the mold, thus eliminating the need for rubber coating material. This results in a smooth surface with no adhesive residue, reducing friction on the rotor during motor assembly and use, and promoting normal motor operation.
[0066] like Figure 6 As shown, in another embodiment of this invention, the stator core 10 has a positioning slot 13 on its outer surface, which facilitates 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 plastic material is coated on the surface of the stator core 10 to form the rubber-coated bracket 20. Therefore, a locking component can be set on the mold corresponding to the positioning slot 13. By locking and fixing, the stability of the connection between the stator core 10 and the mold can be increased, thereby avoiding displacement problems during injection molding and improving the production yield of the rubber-coated bracket 20.
[0067] 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 the positioning socket 13 is arranged to facilitate clamping, thereby improving the stability of the stator core 10 and improving the winding precision.
[0068] Specifically, the positioning socket 13 in the embodiment is in the shape of a strip and extends along the length direction of the stator core 10, and multiple positioning sockets 13 can be arranged and spaced along the circumferential direction of 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.
[0069] Specifically, the cross-sectional shape of the positioning socket 13 disclosed in another embodiment of the embodiment is rectangular, so that the contact can be more close when being in contact with the clamping convex structure of the outside. Compared with the socket with a semicircular cross-sectional shape, the positioning socket 13 disclosed in the embodiment can reduce the assembly gap and further improve the stability of the stator core 10 during processing.
[0070] Specifically, as shown in Figure 7 the winding part 23 is wrapped on the outer surface of the connecting section 121, and one end of the winding part 23 away from the annular body 22 is turned outward to form a wire blocking section 231; the wire blocking section 231 and the annular body 22 form a wire arranging groove 232 for accommodating the coil.
[0071] The wire arranging groove 232 disclosed in the embodiment is used to accommodate the multi-layer enameled wire to form a coil with a certain thickness. The wire blocking section 231 is arranged to form a side restraint, thereby avoiding the coil in the wire arranging groove 232 from slipping out of the side and disintegrating, increasing the structural stability of the stator structure of the high-speed motor, and being beneficial to prolong the service life.
[0072] As shown in Figure 4 and Figure 7 the cross-sectional shape of the connecting section 121 in another embodiment of the embodiment is a rounded rectangle, and the corners of the connecting section 121 are arranged to be rounded to increase the smoothness of the surface. The connecting section 121 is rubber-coated to form the winding part 23, so that the outer surface of the winding part 23 is smooth, and the enameled wire will not be extruded at the corners when being wound, avoiding damaging the outer skin of the enameled wire and also avoiding crushing the rubber-coated support 20 to maintain the insulation state; at the same time, the local pressure concentration is reduced, the internal resistance of the coil is reduced, which is beneficial to reduce the heating of the motor and is beneficial to the long-term use of the motor in the working state.
[0073] Specifically, as another embodiment of this invention, the number of the teeth 12 is even, and every two teeth 12 spaced 180° apart form a group of winding teeth; the number of the wiring grooves 211 is even, and every two wiring grooves 211 spaced 180° apart form a group of wiring grooves, and the two wiring grooves 211 in the wiring groove group have the same depth; the number of winding teeth groups is equal to the number of wiring groove groups.
[0074] In this embodiment, the number of wiring slot groups is equal to the number of winding tooth groups. Specifically, the number of teeth 12 is equal to the number of wiring slots 211, and a corresponding wiring slot 211 is provided next to each tooth 12 to facilitate the introduction or exit of enameled wire. In particular, the two wiring slots 211 in the same wiring slot group have the same depth. Therefore, when wiring is performed between two teeth 12 in the same winding tooth group, the enameled wire is routed along the circumference of the wiring base 21 without tilting or misalignment. This spatially separates the enameled wires wound on different winding tooth groups, thereby reducing mutual interference, avoiding overlapping, improving the orderliness of wiring, increasing the winding accuracy, protecting the outer sheath of the enameled wire, and improving the production yield of the stator structure of the high-speed motor.
[0075] For example, the stator structure of the high-speed motor disclosed in this embodiment can be configured with 6 teeth 12 according to the working principle and performance requirements of the high-speed motor, so as to facilitate the fabrication of a three-phase winding, that is, the number of winding tooth groups is 3. The number of wiring slot groups is adaptively set to 3 groups, a total of 6 wiring slots 211, which are arranged at 60° intervals on the wiring base 21, wherein the depth of every two opposing wiring slots 211 is equal. When 3 enameled wires are used for winding operations, they pass through the 3 groups of wiring slots respectively without contacting each other, thereby making reasonable use of the space on the wiring base 21, improving winding accuracy, reducing mutual wear between enameled wires, and improving the production yield of the high-speed motor stator structure.
[0076] 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 teeth 12 can be set to other numbers according to different production requirements. When other numbers of teeth 12 are set on the stator core 10, the number of wiring slots 211 can also be adjusted adaptively. As long as the technical effect disclosed in this application can be achieved, as an equivalent replacement of the concept of this utility model, it should also be within the scope of protection of this application.
[0077] like Figure 7 As shown, in another embodiment of this invention, the outer wall of the wiring base 21 is provided with a plurality of parallel wiring channels 212, and the two ends of the wiring channels 212 are respectively connected to two wiring channels 211 in a group of wiring channels.
[0078] In this embodiment, the wire is further constrained by setting the wire channel 212. When winding, after winding a coil, the enameled wire is led out of the wire slot 211 and arranged in the wire channel 212, and guided to another wire slot 211 of the same wire slot group, so as to avoid deviation of the enameled wire and further ensure that the enameled wires of different windings are independent of each other and do not interfere with each other, facilitating winding operation.
[0079] As shown in Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 , as another embodiment of the present embodiment, it is disclosed that the pin 30 comprises a wire head winding pin 31, a wire tail winding pin 32 and a grounding pin 33, the wire head winding pin 31 is arranged in a ring shape on the wire base 21 and is used for winding the wire head of the coil; the wire tail winding pin 32 is used for winding the wire tail of the coil; the grounding pin 33 is in contact with the stator core 10 and is used for grounding; the number of the wire head winding pin 31 is equal to the number of the winding tooth group, and the number of the wire tail winding pin 32 is less than the number of the winding tooth group; the wire head of the coil on each group of the winding tooth group is connected to one wire head winding pin 31 respectively, and the wire tail of the coil on at least two groups of the winding tooth group is connected to one wire tail winding pin 32.
[0080] In this embodiment, the pin 30 is fixed on the wire base 21 and is used for winding the enameled wire to lead the wire head or the wire tail of the coil and connect the external circuit.
[0081] Firstly, as shown in Figure 8 , Figure 9 , Figure 10 and Figure 12 , the wire head winding pin 31 is arranged according to the number of the winding tooth group, so that the wire head of each winding has a fixed position, and a plurality of enameled wires are separated to facilitate accurate winding of the enameled wire and improve winding precision.
[0082] Secondly, as shown in Figure 11 , in this embodiment, only one wire tail winding pin 32 is arranged, and the wire tails of the multi-phase winding are all wound around the outer surface of the wire base 21 and connected to the wire tail winding pin 32, so as to reduce the number of current output ports and facilitate external connection of the circuit.
[0083] Finally, as shown in Figure 11As shown, the number of wire tail winding needles 32 is reduced in this embodiment, which can increase the space left on the wire running base 21 to facilitate the arrangement of the grounding needle 33 on the wire running base 21. The grounding needle 33 can be in conductive communication with the stator core 10 through the wire, or can directly penetrate the wire running base 21 to contact the stator core 10, and the external grounding wire, thereby playing a role of electromagnetic shielding, improving the safety and stability of the motor during operation.
[0084] Specifically, the number of grounding needles 33 and wire tail winding needles 32 on the wire running base 21 can be flexibly set. For example, the number of winding tooth groups is m, the number of wire tail winding needles 32 is n, and the number of grounding needles 33 is (m-n); the wire running base 21 is also provided with a wire outlet groove 213 for guiding the wire tail of the coil on the winding tooth group to the wire tail winding needle 32, and the number of wire outlet grooves 213 is (m-n). Wherein, m and n are both positive integers, and n is less than m.
[0085] In this embodiment, the total number of insertion needles 30 is 2m, which is equal to the number of tooth portions 12, so the insertion needles 30 can be arranged at the position where the winding portion 23 and the annular body 22 are connected, thereby reasonably utilizing the space on the wire running base 21 and facilitating winding and production.
[0086] For example, the stator core 10 is provided with six tooth portions 12, and after winding six coils, a three-phase winding is formed; six insertion needles 30 can be arranged, three of which in the six insertion needles 30 are wire head winding needles 31, one is a wire tail winding needle 32, and the last two are grounding needles 33, which reasonably utilizes the space of the stator structure of the high-speed motor to form a star connection of the three-phase winding, and only four insertion needles 30 are needed for the three-phase winding, and the remaining two insertion needles 30 can be connected to the stator core 10, thereby increasing the shielding effect and improving the performance of the product on the basis of maintaining the normal use of the stator structure of the high-speed motor.
[0087] Specifically, as shown in Figure 11 each phase winding adopts a winding path of first winding a wire head winding needle 31, then winding a coil on the winding portion 23, and leading out to the outside of the wire running base from a wire running groove 211, and then winding half a circle of the wire running base 21 to the opposite winding portion 23; leading into the inside of the wire running base 21 from the other wire running groove 211, winding a coil on the opposite winding portion 23, and leading out to the outside of the wire running base 21 from a wire outlet groove 213, and winding on the wire tail winding needle 32 through the outer surface of the wire running base 21. In this embodiment, the wire outlet groove 213 is arranged on the wire running base 21 to separately lead out the wire tail of the coil, thereby separating the wire head and the wire tail of each coil to avoid mutual friction or extrusion, further improving the winding precision of the stator structure of the high-speed motor, and improving the yield of the motor.
[0088] As shown in Figure 13As another embodiment of the present application, a high-speed motor is disclosed, which comprises a motor rotor structure 40, a stator structure of the high-speed motor and an end cover 50, the stator structure of the high-speed motor being sleeved on the motor rotor structure 40, and the end cover 50 covering the stator structure of the high-speed motor to cover the wiring base 21.
[0089] In the embodiment, the motor rotor structure 40 and the stator structure of the high-speed motor are plugged to realize high-speed rotation of the rotor. The wiring base 21 of the stator structure of the high-speed motor is covered by the end cover 50, so that the end of the stator structure of the high-speed motor does not need to be glued, the 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.
[0090] Specifically, the end cover 50 disclosed in the embodiment can be provided with a sunken platform on the side away from the stator structure of the high-speed motor to facilitate assembly of a control board 60. The control board 60 includes but is not limited to a printed circuit board and is electrically connected to the stator structure to control start or stop of the high-speed motor.
[0091] As another embodiment of the present application, a hair dryer is disclosed, which comprises the high-speed motor as described above.
[0092] In summary, the present application discloses a stator structure of a high-speed motor, which comprises a stator core 10, a rubber-coated support 20 and a plurality of pins 30, the rubber-coated support 20 being wrapped on the stator core 10, the end of the rubber-coated support 20 being provided with an annular wiring base 21, the wiring base 21 protruding in the axial direction of the stator core 10, the wiring base 21 being provided with at least two wiring grooves 211 of different depths, the plurality of pins 30 being plugged into the wiring base 21, and the pins 30 and the wiring grooves 211 being alternately arranged in the circumferential direction of the wiring base 21. In the embodiment, considering that the stator structure of the high-speed motor needs to be provided with multi-phase windings, the enameled wires of different windings are arranged to pass through the wiring grooves 211 of different depths, so that the enameled wires are staggered when passing the surface of the rubber-coated support 20, the situation of overlapping wires is avoided, the orderliness of the wiring design of the stator structure of the high-speed motor is improved, the original insulation and voltage resistance of the enameled wires are maintained, the production yield is improved, and the performance and service life of the stator structure of the high-speed motor are improved.
[0093] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.
[0094] It should be noted that the specific structure and working principle of the utility model are introduced by taking the stator structure of high-speed motor, high-speed motor and hair dryer as an example, but the application of the utility model is not limited to the stator structure of high-speed motor, high-speed motor and hair dryer, and can also be applied to the production and use of other similar workpieces.
[0095] It should be understood that the utility model is not limited to the precise structure already described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the utility model is only limited by the appended claims.
[0096] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A stator structure of a high-speed electric machine, characterized by comprising: The application relates to a stator core and a rubber-coated support. The rubber-coated support is arranged on the stator core, and the end of the rubber-coated support is provided with an annular wiring base which protrudes along the axial direction of the stator core; at least two wiring grooves with different depths are arranged on the wiring base. A plurality of pins are arranged on the wiring base, and the pins and the wiring grooves are alternately arranged along the circumferential direction of the wiring base. The stator core comprises an annular yoke and a plurality of tooth portions arranged on the inner side of the yoke, and the tooth portions are annularly arranged on the inner wall of the yoke.
2. The stator structure of a high-speed motor according to claim 1, characterized by The rubber-coated support comprises an annular main body and a winding portion, the annular main body is arranged on the inner wall of the yoke, and the winding portion is connected with the annular main body and arranged on the tooth portion to wind the enameled wire. The wiring base is arranged on the end of the annular main body, the pins are arranged on one end of the wiring base which is away from the annular main body, and the projection of the pins on the annular main body is located at the position where the winding portion is connected with the annular main body. A plurality of planes are annularly arranged on the inner wall of the annular main body, and the winding portion is arranged at the central position of the planes.
3. The stator structure of a high-speed motor according to claim 2, characterized by The tooth portion comprises a connecting section and a platform section, one side of the connecting section is connected with the yoke, the other side of the connecting section extends towards the center of the yoke, and the platform section is arranged on the other side of the connecting section; the platform section is in the shape of a sector, and the width of the platform section is greater than the width of the connecting section.
4. The stator structure of a high-speed motor according to claim 2, wherein The winding portion is arranged on the outer surface of the connecting section, one end of the winding portion which is away from the annular main body is turned outward to form a wire blocking section, and the wire blocking section and the annular main body form a wire arranging groove for accommodating the coil. The number of the tooth portions is even, and every two tooth portions arranged at intervals of 180 degrees form a winding tooth group.
5. The stator structure of a high-speed motor according to claim 2, wherein The number of the wiring grooves is even, and every two wiring grooves arranged at intervals of 180 degrees form a wiring groove group, and the depths of the two wiring grooves in the wiring groove group are equal. The number of the winding tooth groups is equal to the number of the wiring groove groups. A plurality of wiring channels are arranged on the outer wall of the wiring base in parallel, and the two ends of the wiring channels are respectively connected with the two wiring grooves in one wiring groove group.
6. The stator structure of a high-speed motor according to claim 5, wherein The pins comprise a wire head winding pin, a wire tail winding pin and a grounding pin, the wire head winding pin is annularly arranged on the wiring base to wind the wire head of the coil, the wire tail winding pin is used to wind the wire tail of the coil, and the grounding pin is in contact with the stator core to be grounded.
7. The stator structure of a high-speed motor according to claim 5, wherein The number of the wire head winding pins is equal to the number of the winding tooth groups, the number of the wire tail winding pins is less than the number of the winding tooth groups, the wire head of the coil on each winding tooth group is connected with one wire head winding pin, and the wire tails of the coils on at least two winding tooth groups are connected with one wire tail winding pin. 8. The stator structure of a high-speed motor according to claim 7, wherein The number of the winding tooth groups is m, the number of the wire tail winding needles is n, and the number of the grounding needles is (m-n); the wire outlet grooves are further arranged on the wire running base to guide the wire tails of the coils on the winding tooth groups to the wire tail winding needles, and the number of the wire outlet grooves is (m-n). Wherein, m and n are positive integers, and n is less than m.
9. A high speed electric machine characterized by, The high-speed motor comprises a motor rotor structure, a stator structure of the high-speed motor and an end cover, the stator structure of the high-speed motor is sleeved on the motor rotor structure, and the end cover covers the stator structure of the high-speed motor to cover the wire running base.
10. A hair dryer characterized by The high-speed motor comprises the motor rotor structure, the stator structure of the high-speed motor and the end cover.