Multi-energy shaftless brushless motor based on electromagnetic field
By employing axial winding and axial magnet design in shaftless motors, the problems of complex structure and large radial thickness of shaftless motors are solved, resulting in a multi-energy brushless motor with improved motor performance and easy disassembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN HUARUI YINGJING INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-06-26
AI Technical Summary
Existing shaftless motors have complex structures, are cumbersome to disassemble and maintain, and have radial windings for the magnetic core frame, resulting in a smaller inner diameter of the cylindrical output shaft and a thicker radial thickness of the motor. This leads to insufficient space for airflow or water flow and inadequate performance.
The multi-energy shaftless brushless motor is composed of a shell, a front magnetic core winding frame, a rear magnetic core winding frame, a rotating shaft assembly, a first rotating magnetic wheel, bearings, and a control circuit. The winding column is arranged axially, and the magnet is set axially. The motor function is achieved by controlling the current direction through the control circuit. The structure is simple and easy to disassemble, and the radial thickness is reduced to increase the space for airflow or water flow.
This design achieves a simple and easy-to-disassemble motor structure, increases the space for airflow or water flow, improves motor performance, and meets various usage requirements.
Smart Images
Figure CN224418542U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of brushless motor technology, and more particularly to a multi-energy shaftless brushless motor based on the electromagnetic field. Background Technology
[0002] Most motors on the market have solid shafts. Due to the presence of solid shafts, when they are used for aerodynamics or underwater propulsion, the blades need to be mounted on solid shafts, which can easily lead to problems such as the solid shaft getting entangled in objects or being hit by objects. Therefore, shaftless motors have emerged, which use cylindrical output shafts instead of solid shafts to meet the needs of different applications.
[0003] Existing shaftless motors have a complex structure, making disassembly and maintenance cumbersome. The winding of their magnetic core frame is radial, and the rotor magnets are radially arranged inside the windings. This type of shaftless motor results in a smaller inner diameter of the cylindrical output shaft and a thicker radial thickness of the motor, which reduces the space for airflow or water flow within the cylindrical output shaft, leading to insufficient motor performance. Summary of the Invention
[0004] The problem to be solved by this utility model is to provide a multi-energy shaftless brushless motor based on the electromagnetic field, which reduces the radial thickness of the motor, can maximize the passage space for air or water flow, and improve the performance of the motor.
[0005] To solve the above technical problems, this utility model provides a multi-energy shaftless brushless motor based on the electromagnetic field, comprising a housing, a front magnetic core winding frame, a rear magnetic core winding frame, a rotating shaft assembly, a first rotating magnetic wheel, a bearing, and a control circuit. Both the front and rear magnetic core winding frames include a support ring, winding posts evenly distributed on one end face of the support ring, and a sector plate connected to one end of the winding posts. The number of winding posts on both the front and rear magnetic core winding frames is 'a', where 'a' is an integer multiple of 3. The front and rear magnetic core winding frames are respectively fixedly installed at both ends inside the housing. The rotating shaft assembly includes an output sleeve and a second rotating magnetic wheel connected to the periphery of the output sleeve. The first rotating magnetic wheel is fitted onto the output sleeve. The outer wall of the output sleeve and the inner wall of the housing are connected by a bearing. The inner ring of the bearing is engaged between the first and second rotating magnetic wheels. The first rotating magnetic wheel is located below the sector plate of the front magnetic core winding frame. On the side, the second rotating magnetic wheel is located above the sector plate of the rear core winding frame. Both the front and rear core winding frames are equipped with W-phase winding groups, U-phase winding groups, and V-phase winding groups. The W-phase winding group is formed by winding W-phase enameled wire around a winding post according to a rule of winding every two winding posts. The U-phase winding group is formed by winding U-phase enameled wire around a winding post according to a rule of winding every two winding posts. The V-phase winding group is formed by winding V-phase enameled wire around a winding post according to a rule of winding every two winding posts. The wires are wound in a regular pattern on the winding posts, with the W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire wound on different winding posts. One end of each of the W-phase, U-phase, and V-phase enameled wires is connected, and the other end is electrically connected to the control circuit. The first and second rotating magnetic wheels each have b receiving holes evenly distributed on them. Each receiving hole contains a magnet, and the polarities of two adjacent magnets are opposite to those of the opposite end of the sector plate.
[0006] Preferably, b = a / 3*4.
[0007] Preferably, b = a / 3 * 2.
[0008] Preferably, the total area of the top surfaces of the a sector plates is equal to the total area of the bottom surfaces of the b magnets.
[0009] Preferably, the outer edge of the support ring is uniformly distributed with wire grooves, the number of wire grooves is c, c = a, and the end face of the support ring is provided with an annular wire groove that communicates with the wire grooves.
[0010] Preferably, it further includes an upper end cover, a lower end cover, a front support ring, and a rear support ring. The bottom outer edge of the upper end cover and the top outer edge of the lower end cover are each provided with an annular clearance groove that matches the end of the outer shell. The top and bottom ends of the outer shell are respectively assembled on the annular clearance grooves of the upper and lower end covers. Several mounting screw holes are distributed on the wall surface of the annular clearance groove. The end of the outer shell is provided with a countersunk hole corresponding to the mounting screw hole. The countersunk hole and the mounting screw hole are connected by screws. The front support ring is locked between the top end of the outer ring of the bearing and the bottom of the support ring of the front magnetic core winding frame, and the rear support ring is locked between the bottom end of the outer ring of the bearing and the top of the support ring of the rear magnetic core winding frame.
[0011] Preferably, the outer casing is provided with a first cable outlet hole and a second cable outlet hole, and one end of the front support ring and the rear support ring is respectively provided with a first cable outlet notch and a second cable outlet notch corresponding to the first cable outlet hole and the second cable outlet hole.
[0012] Preferably, both the front and rear core winding frames are made of magnetically conductive metal.
[0013] Preferably, the magnets on the front and rear magnetic core winding frames have the same pole facing each other, and the sector plates on the front and rear magnetic core winding frames are symmetrically arranged.
[0014] Preferably, the magnets on the front and rear magnetic core winding frames have the same pole facing each other, and the sector plates on the front and rear magnetic core winding frames are staggered.
[0015] The beneficial effects of this utility model are as follows: This utility model provides a multi-energy shaftless brushless motor based on the electromagnetic field. It supplies power to the W-phase, U-phase, and V-phase enameled wires and controls the direction of current flow through a control circuit. The control circuit can realize functions such as forward and reverse rotation, start and stop, and speed adjustment of the motor. The W-phase, U-phase, and V-phase enameled wires are wound on different winding posts according to a rule of every two winding posts per phase, forming W-phase winding groups, U-phase winding groups, and V-phase winding groups on the front and rear magnetic core winding frames. First, the bearings are installed on the output sleeve. Then, the first rotating magnetic wheel is assembled onto the output sleeve. Next, magnets are sequentially assembled into the receiving holes according to polarity reversal. Then, the rotating shaft assembly with the bearings is assembled into the housing. The inner wall of the housing and the outer wall of the output sleeve are connected by the bearings. Then, the front and rear support rings are respectively assembled into both ends of the housing, and the front and rear magnetic core winding frames are respectively assembled into the housing. At both ends, the upper and lower end covers are then assembled at both ends of the outer casing. The upper and lower end covers respectively press the front and rear magnetic core winding frames together. The front support ring limits the bearing and the front magnetic core winding frame, and the rear support ring limits the bearing and the rear magnetic core winding frame. The sector plate is opposite to one end of the magnet. The rotating shaft assembly can rotate within the outer casing. It has the advantages of simple structure, easy disassembly, and low cost. The winding direction on the winding column is axial, and the magnet is also axially set on the upper side of the winding column. This can reduce the radial thickness of the motor, maximize the passage space for airflow or water flow, improve the performance of the motor, and realize two power sources driving one output point to meet various usage needs. Attached Figure Description
[0016] Figure 1 A schematic diagram illustrating the external structure of this utility model is provided.
[0017] Figure 2 A cross-sectional view of the present invention is shown.
[0018] Figure 3 An exploded view of the present invention is shown.
[0019] Reference numerals: 1. Outer shell, 100. Countersunk hole, 101. First wire outlet, 102. Second wire outlet, 2. Front core winding frame, 20. Support ring, 200. Wire passage groove, 201. Annular wire groove, 21. Winding post, 22. Fan-shaped plate, 3. Rear core winding frame, 4. Rotary shaft assembly, 40. Output sleeve, 41. Second rotating magnetic wheel, 5. First rotating magnetic wheel, 50. Receiving hole, 51. Magnet, 6. Bearing, 7. Upper end cover, 70. Annular clearance groove, 71. Mounting screw hole, 8. Lower end cover, 9. Front support ring, 90. First wire outlet notch, 11. Rear support ring, 11. Second wire outlet notch, 110. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure.
[0021] Based on the embodiments described in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.
[0022] refer to Figure 1-3 .
[0023] This utility model provides a multi-energy shaftless brushless motor based on the electromagnetic field, comprising a housing 1, a front magnetic core winding frame 2, a rear magnetic core winding frame 3, a rotating shaft assembly 4, a first rotating magnetic wheel 5, a bearing 6, and a control circuit. Both the front magnetic core winding frame 2 and the rear magnetic core winding frame 3 include a support ring 20, winding posts 21 evenly distributed on one end face of the support ring 20, and a fan-shaped plate 22 connected to one end of the winding posts 21. The number of winding posts 21 on both the front and rear magnetic core winding frames 2 and 3 is 'a', where a is 3. The front core winding frame 2 and the rear core winding frame 3 are fixedly installed at both ends inside the housing 1, which are multiples of each other. The rotating shaft assembly 4 includes an output sleeve 40 and a second rotating magnetic wheel 41 connected to the periphery of the output sleeve 40. The first rotating magnetic wheel 5 is fitted onto the output sleeve 40. The outer wall of the output sleeve 40 and the inner wall of the housing 1 are connected by a bearing 6. The inner ring of the bearing 6 is stuck between the first rotating magnetic wheel 5 and the second rotating magnetic wheel 41. The first rotating magnetic wheel 5 is located below the fan-shaped plate 22 of the front core winding frame 2. On the side, the second rotating magnetic wheel 41 is located above the sector plate 22 of the rear magnetic core winding frame 3. Both the front magnetic core winding frame 2 and the rear magnetic core winding frame 3 are equipped with W-phase winding groups, U-phase winding groups, and V-phase winding groups. The W-phase winding group is formed by winding W-phase enameled wire around the winding post 21 according to the rule of winding every two winding posts 21. The U-phase winding group is formed by winding U-phase enameled wire around the winding post 21 according to the rule of winding every two winding posts 21. The V-phase winding group is formed by winding V-phase enameled wire around the winding post 21 according to the rule of winding every two winding posts 21. Two winding posts 21 are formed by regular winding of wires on the winding posts 21. The W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire are wound on different winding posts 21 respectively. One end of the W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire is connected and the other end is electrically connected to the control circuit. The first rotating magnetic wheel 5 and the second rotating magnetic wheel 41 are each evenly distributed with b receiving holes 50. Each receiving hole 50 is provided with a magnet 51. The polarity of two adjacent magnets 51 is opposite to that of the opposite end of the sector plate 22.
[0024] Specifically, the W-phase, U-phase, and V-phase enameled wires can be single-core or multi-strand enameled wires. The enameled wires are primarily used to wind around the winding posts 21, generating intermittent magnetism when energized to drive the magnet 51, thereby rotating the rotating shaft assembly 4. According to design rules, the number of winding posts 21 on both the front core winding frame 2 and the rear core winding frame 3 should be an integer multiple of 3. The attached diagram illustrates a case where the front core winding frame 2 and the rear core winding frame 3 have 21 winding posts. Given any arbitrary starting point for the winding posts, the 21 winding posts are designated as No. 1, No. 2, No. 3…No. 20, No. 21.
[0025] The winding posts corresponding to the W phase winding group are: No. 1, No. 4, No. 7, No. 10, No. 13, No. 16, and No. 19;
[0026] The winding posts corresponding to the U-phase winding group are: No. 2, No. 5, No. 8, No. 11, No. 14, No. 17, and No. 20;
[0027] The winding posts corresponding to the V-phase winding group are: No. 3, No. 6, No. 9, No. 12, No. 15, No. 18, and No. 21.
[0028] That is, winding posts 1, 2, and 3 correspond to the first W, U, and V of the three winding groups. Following this rule, each winding group corresponds to seven winding posts 21. The enameled wire is wound around one winding post 21 every two winding posts 21. The control circuit can use a conventional three-phase motor circuit. The control circuit has W-phase connection terminals, U-phase connection terminals, and V-phase connection terminals. The connection method is to connect the ends of the W-phase, U-phase, and V-phase enameled wires together, and then lead out the other ends of the wires. These ends are then connected to the W-phase, U-phase, and V-phase connection terminals of the control circuit, respectively. This allows control of the motor's forward and reverse rotation, start / stop, braking, and speed.
[0029] The installation method of magnet 51 depends on the winding method of winding post 21. Different winding methods result in different arrangements of magnet 51. For example, if the winding method of winding post 21 is W corresponding to winding post 1, U corresponding to winding post 2, and V corresponding to winding post 3, then the magnetic orientation of the bottom of magnet 51 is arranged as follows: the first receiving hole is the N pole, the second receiving hole is the S pole, the third receiving hole is the N pole, the fourth receiving hole is the S pole, and so on. If the winding method of winding post 21 is W corresponding to winding posts 1 and 2, U corresponding to winding posts 3 and 4, and V corresponding to winding posts 5 and 6, then the magnetic orientation of the bottom of magnet 51 is arranged as follows: the first and second receiving holes are the N pole, the third and fourth receiving holes are the S pole, the fifth and sixth receiving holes are the N pole, the seventh and eighth receiving holes are the S pole, and so on.
[0030] The rotating shaft kit 4 can change the inner structure of the output sleeve 40 according to functional requirements. For example, it can be designed as a fan blade that conforms to the airflow when applied to the scenario of pushing airflow, and as a propeller that conforms to the water flow when applied to the scenario of pushing water flow. Gears can also be added to the inner side of the output sleeve 40 and connected to the reduction device to convert part of the rotation speed into power output. Users can assemble and apply it to various usage environments.
[0031] Based on the above embodiments, b = a / 3*4. The attached diagram illustrates a case where the front core winding frame 2 and the rear core winding frame 3 have 21 winding posts, and the corresponding number of receiving holes 50 is 28, that is, there are 28 magnets 51 on both the first rotating magnetic wheel 5 and the second rotating magnetic wheel 41.
[0032] Based on the above embodiments, b = a / 3*2. The attached diagram illustrates a case where the front core winding frame 2 and the rear core winding frame 3 have 21 winding posts, and the corresponding number of receiving holes 50 is 14, that is, there are 14 magnets 51 on both the first rotating magnetic wheel 5 and the second rotating magnetic wheel 41.
[0033] Based on the above embodiments, the total area of one end face of each of the a sector plates 22 is equal to the total area of one end face of each of the b magnets 51.
[0034] Based on the above embodiments, the outer edge of the support ring 20 is uniformly distributed with wire grooves 200, the number of which is c, where c = a. The end face of the support ring 20 is provided with an annular groove 201 that communicates with the wire grooves 200. When the enameled wire is wound between different winding posts 21, it can transition through the wire grooves 200 and the annular groove 201, which facilitates the arrangement of the winding.
[0035] Based on the above embodiments, it also includes an upper end cover 7, a lower end cover 8, a front support ring 9, and a rear support ring 11. The bottom outer edge of the upper end cover 7 and the top outer edge of the lower end cover 8 are provided with annular clearance grooves 70 that match the ends of the outer shell 1. The top and bottom ends of the outer shell 1 are respectively assembled on the annular clearance grooves 70 of the upper end cover 7 and the lower end cover 8. A plurality of mounting screw holes 71 are distributed on the wall surface of the annular clearance groove 70. The ends of the outer shell 1 are provided with countersunk heads corresponding to the mounting screw holes 71. The hole 100, countersunk hole 100, and mounting screw hole 71 are connected by screws; the front support ring 9 is locked between the top of the outer ring of the bearing 6 and the bottom of the support ring 20 of the front magnetic core winding frame 2, and the rear support ring 11 is locked between the bottom of the outer ring of the bearing 6 and the top of the support ring 20 of the rear magnetic core winding frame 3. The front support ring 9 can limit the bearing 6 and the front magnetic core winding frame 2, and the rear support ring 11 can limit the bearing 6 and the rear magnetic core winding frame 3. It has the advantages of convenient disassembly and assembly and compact structure.
[0036] Based on the above embodiments, the outer casing 1 is provided with a first wire outlet hole 101 and a second wire outlet hole 102. One end of the front support ring 9 and the rear support ring 11 is respectively provided with a first wire outlet notch 90 and a second wire outlet notch 110 corresponding to the first wire outlet hole 101 and the second wire outlet hole 102. One end of the W-phase enameled wire, U-phase enameled wire and V-phase enameled wire on the front magnetic core winding frame 2 is led out through the first wire outlet notch 90 and the first wire outlet hole 101. One end of the W-phase enameled wire, U-phase enameled wire and V-phase enameled wire on the rear magnetic core winding frame 3 is led out through the second wire outlet notch 110 and the second wire outlet hole 102.
[0037] Based on the above embodiments, both the front magnetic core winding frame 2 and the rear magnetic core winding frame 3 are magnetically conductive metals. After the winding is energized, the sector plate 22 generates magnetism, thereby generating a driving force on the magnet 51.
[0038] Based on the above embodiments, the magnets 51 on the front core winding frame 2 and the rear core winding frame 3 have the same pole facing each other, and the sector plates 22 on the front core winding frame 2 and the rear core winding frame 3 are symmetrically arranged, which can improve the output power of the motor.
[0039] Based on the above embodiments, the magnets 51 on the front core winding frame 2 and the rear core winding frame 3 have the same pole facing each other, and the sector plate 22 on the front core winding frame 2 and the sector plate 22 on the rear core winding frame 3 are staggered, which can improve the speed of the motor and make the rotation smoother.
[0040] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A multi-energy shaftless brushless motor based on the electromagnetic field, characterized in that, The device comprises a housing, a front magnetic core winding frame, a rear magnetic core winding frame, a rotating shaft assembly, a first rotating magnetic wheel, a bearing, and a control circuit. Both the front and rear magnetic core winding frames include a support ring, winding posts evenly distributed on one end face of the support ring, and a sector plate connected to one end of each winding post. The number of winding posts on both the front and rear magnetic core winding frames is 'a', where 'a' is an integer multiple of 3. The front and rear magnetic core winding frames are respectively fixedly installed at both ends inside the housing. The rotating shaft assembly includes an output sleeve and a second rotating magnetic wheel connected to the periphery of the output sleeve. The first rotating magnetic wheel is fitted onto the output sleeve. The outer wall of the output sleeve and the inner wall of the housing are connected by the bearing. The inner ring of the bearing is engaged between the first and second rotating magnetic wheels. The first rotating magnetic wheel is located below the sector plate of the front magnetic core winding frame, and the second rotating magnetic wheel is located on the rear magnetic core winding frame. On the upper side of the sector-shaped plate, the front core winding frame and the rear core winding frame are each provided with a W-phase winding group, a U-phase winding group, and a V-phase winding group. The W-phase winding group is formed by winding W-phase enameled wire around the winding posts according to the rule of winding every two winding posts. The U-phase winding group is formed by winding U-phase enameled wire around the winding posts according to the rule of winding every two winding posts. The V-phase winding group is formed by winding V-phase enameled wire around the winding posts according to the rule of winding every two winding posts. The winding pattern is formed by winding the wires onto the winding posts. The W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire are wound onto different winding posts. One end of each of the W-phase, U-phase, and V-phase enameled wires is connected, and the other end is electrically connected to the control circuit. The first and second rotating magnetic wheels each have b receiving holes evenly distributed on them. Each receiving hole contains a magnet, and the polarities of two adjacent magnets are opposite to those of the opposite end of the sector plate.
2. The multi-energy shaftless brushless motor based on the electromagnetic field according to claim 1, characterized in that, b = a / 3 * 4.
3. The multi-energy shaftless brushless motor based on the electromagnetic field according to claim 1, characterized in that, b = a / 3 * 2.
4. A multi-energy shaftless brushless motor based on the electromagnetic field according to claim 2 or 3, characterized in that, The total area of the top surface of each of the a sector plates is equal to the total area of the bottom surface of each of the b magnets.
5. A multi-energy shaftless brushless motor based on the electromagnetic field according to claim 4, characterized in that, The outer edge of the support ring is uniformly distributed with wire grooves, the number of which is c, where c = a. The end face of the support ring is provided with an annular groove that communicates with the wire grooves.
6. A multi-energy shaftless brushless motor based on the electromagnetic field according to claim 5, characterized in that, It also includes an upper end cover, a lower end cover, a front support ring, and a rear support ring. The bottom outer edge of the upper end cover and the top outer edge of the lower end cover are provided with annular clearance grooves that match the ends of the outer shell. The top and bottom ends of the outer shell are respectively assembled on the annular clearance grooves of the upper and lower end covers. A plurality of mounting screw holes are distributed on the wall surface of the annular clearance grooves. The ends of the outer shell are provided with countersunk holes that correspond to the mounting screw holes. The countersunk holes and the mounting screw holes are connected by screws. The front support ring is locked between the top end of the outer ring of the bearing and the bottom of the support ring of the front magnetic core winding frame. The rear support ring is locked between the bottom end of the outer ring of the bearing and the top of the support ring of the rear magnetic core winding frame.
7. A multi-energy shaftless brushless motor based on the electromagnetic field according to claim 6, characterized in that, The outer casing is provided with a first cable outlet hole and a second cable outlet hole, and one end of the front support ring and the rear support ring is respectively provided with a first cable outlet notch and a second cable outlet notch corresponding to the first cable outlet hole and the second cable outlet hole.
8. A multi-energy shaftless brushless motor based on the electromagnetic field according to claim 7, characterized in that, Both the front and rear magnetic core winding frames are made of magnetically conductive metal.
9. A multi-energy shaftless brushless motor based on the electromagnetic field according to claim 1, characterized in that, The magnets on the front and rear magnetic core winding frames have the same pole facing each other, and the sector plates on the front and rear magnetic core winding frames are symmetrically arranged.
10. A multi-energy shaftless brushless motor based on the electromagnetic field according to claim 1, characterized in that, The magnets on the front and rear magnetic core winding frames have the same pole facing each other, and the sector plates on the front and rear magnetic core winding frames are offset from each other.