Differential kinetic energy shaftless brushless motor based on electromagnetic field

Abstract

The utility model provides a kind of difference kinetic energy shaftless brushless motor based on electromagnetic field, including shell, double-end difference magnetic core winding frame, front rotating shaft kit, rear rotating shaft kit, two bearings, control circuit, double-end difference magnetic core winding frame includes support ring, winding column, sector plate, winding column is misaligned setting on the two end surfaces of support ring, front rotating shaft kit, rear rotating shaft kit all include output sleeve, outer ring part, the both ends of double-end difference magnetic core winding frame are all provided with W-phase winding group, U-phase winding group, V-phase winding group, outer ring part is uniformly distributed with b containing hole, magnet is all set in each containing hole, the polarity of the bottom end of adjacent two magnets is opposite, can reduce the radial thickness of motor, can more limit increase the passing space of airflow or water flow. When two sides rotating shaft kit is split structure, the power difference of two power points can be output, when two sides rotating shaft kit is integrated structure, one power output point can be output, rotate more smoothly.

Description

Technical Field

[0001] This utility model relates to the field of brushless motor technology, and more particularly to a shaftless brushless motor based on differential kinetic energy in 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. Utility Model Content

[0004] The problem to be solved by this utility model is to provide a shaftless brushless motor based on differential kinetic energy in the electromagnetic field, which reduces the radial thickness of the motor, can maximize the passage space for airflow or water flow, and improve the performance of the motor.

[0005] To solve the above technical problems, this utility model provides a shaftless brushless motor based on differential kinetic energy in the electromagnetic field. The motor includes a housing, a double-ended differential magnetic core winding frame, a front rotating shaft assembly, a rear rotating shaft assembly, two bearings, and a control circuit. The double-ended differential magnetic core winding frame includes a support ring, winding posts evenly distributed on both ends of the support ring, and a sector plate connected to one end of the winding posts. The winding posts on both ends of the support ring are staggered, and the number of winding posts on both ends of the support ring is 'a', where 'a' is an integer multiple of 3. The double-ended differential magnetic core winding frame is fixedly installed inside the housing. Both the front and rear rotating shaft assemblies include an output sleeve and an outer ring connected to the periphery of the output sleeve. One end of the output sleeve is connected to the inner wall of the housing via one of the bearings. The outer ring is located on one side of the sector plate. The double-ended differential magnetic core winding frame has W-phase winding group, U-phase winding group and V-phase winding group at both ends. The W-phase winding group is formed by winding W-phase enameled wire on the winding column according to the rule of winding every two winding columns. The U-phase winding group is formed by winding U-phase enameled wire on the winding column according to the rule of winding every two winding columns. The V-phase winding group is formed by winding V-phase enameled wire on the winding column according to the rule of winding every two winding columns. The W-phase enameled wire, U-phase enameled wire and V-phase enameled wire are wound on different winding columns. One end of the W-phase enameled wire, U-phase enameled wire and V-phase enameled wire are connected and the other end is electrically connected to the control circuit. b receiving holes are evenly distributed on the outer ring. A magnet is set in each receiving hole. The bottom polarities of two adjacent magnets are opposite.

[0006] Preferably, the output sleeve of the front rotating shaft assembly and the output sleeve of the rear rotating shaft assembly are connected and are an integral structure, with the outer ring of the front rotating shaft assembly fitting onto the output sleeve.

[0007] Preferably, b = a / 3*4.

[0008] Preferably, b = a / 3*2.

[0009] Preferably, the total area of ​​one end face of the a sector plates is equal to the total area of ​​one end face of the b magnets.

[0010] Preferably, it also includes an upper end cover and a lower end cover. 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 end cover and the lower end cover. 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.

[0011] Preferably, the inner edge of the outer casing is provided with an annular step, the top surface of the support ring contacts the bottom surface of the annular step, a front support ring is engaged between the top surface of the annular step and the bearing, a rear support ring is engaged between the bottom of the support ring and the bearing, one end of the rear support ring is provided with a wire outlet notch, and the outer casing is provided with a wire outlet hole communicating with the wire outlet notch.

[0012] Preferably, the double-ended differential magnetic core winding frame is made of magnetically conductive metal.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a shaftless brushless motor based on differential kinetic energy in the electromagnetic field. It supplies power to the W-phase, U-phase, and V-phase enameled wires through a control circuit and controls the direction of current flow. The control circuit can realize functions such as forward and reverse rotation, start and stop, and speed adjustment of the front and rear rotating shaft assemblies. 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, U-phase, and V-phase winding groups at both ends of the double-ended differential magnetic core winding frame. First, magnets are sequentially inserted into the receiving holes of the outer ring according to polarity reversal. The double-ended differential magnetic core winding frame is then assembled into the housing. Next, the front and rear support rings are inserted from the top and bottom sides of the housing, respectively. The bearing is installed at one end of the output sleeve. Then, the front and rear rotating shaft assemblies with the bearings are inserted into the front and rear ends of the housing, respectively. The front support ring is... The rear support ring is secured between the top of the support ring and the bearing, and the bottom of the support ring is secured between the support ring and the bearing. The inner wall of the housing and one end of the output sleeve are connected by the bearing. The upper and lower end covers are assembled at both ends of the housing. The sector plate is opposite to one end of the magnet. It has the advantages of simple structure, easy disassembly, and low cost. The winding direction on the winding post is axial, and the magnet is also axially set on the upper side of the winding post. It can reduce the radial thickness of the motor and maximize the passage space for airflow or water flow, thereby improving the performance of the motor. It can realize the front rotating shaft assembly and the rear rotating shaft assembly to rotate in the same direction or in opposite directions, meeting a variety of usage requirements. Because the winding posts on both ends of the support ring are misaligned, that is, the W-phase winding group, U-phase winding group, and V-phase winding group on both ends of the double-ended differential magnetic core winding frame are misaligned, the difference in driving energy on both sides can be utilized. When the front rotating shaft assembly and the rear rotating shaft assembly are separate structures, they can output different power to two power points. When the front rotating shaft assembly and the rear rotating shaft assembly are integrated structures, they can output power to a combined power output point. The misaligned W-phase winding group, U-phase winding group, and V-phase winding group can make the combined rotor rotate more smoothly, and the superposition effect of rotational speed is better, resulting in a faster rotational speed. Attached Figure Description

[0014] Figure 1 A schematic diagram illustrating the external structure of this utility model is provided.

[0015] Figure 2 The cross-sectional view illustrates that the front rotating shaft assembly and the rear rotating shaft assembly of this utility model are separate structures.

[0016] Figure 3 An exploded view illustrating that the front and rear rotating shaft assemblies of this utility model are separate structures.

[0017] Figure 4 A cross-sectional view illustrating the integrated structure of the front and rear rotating shaft components of this utility model is shown.

[0018] Figure 5 An exploded view illustrating the integrated structure of the front and rear rotating shaft components of this utility model is shown.

[0019] Reference numerals: 1. Outer shell; 10. Countersunk hole; 11. Annular step; 12. Outlet hole; 2. Double-ended differential magnetic core winding frame; 20. Support ring; 21. Winding post; 22. Fan-shaped plate; 3. Front rotating shaft assembly; 30. Output sleeve; 31. Outer ring; 310. Receiving hole; 32. Magnet; 4. Rear rotating shaft assembly; 5. Bearing; 6. Upper end cover; 60. Annular clearance groove; 61. Mounting screw hole; 7. Lower end cover; 8. Front support ring; 9. Rear support ring; 90. Outlet notch. 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 Figures 1-5 .

[0023] This utility model provides a shaftless brushless motor based on differential kinetic energy in the electromagnetic field, comprising a housing 1, a double-ended differential magnetic core winding frame 2, a front rotating shaft assembly 3, a rear rotating shaft assembly 4, two bearings 5, and a control circuit. The double-ended differential magnetic core winding frame 2 includes a support ring 20, winding posts 21 evenly distributed on both ends of the support ring 20, and a sector plate 22 connected to one end of the winding posts 21. The winding posts 21 on both ends of the support ring 20 are staggered, and the number of winding posts 21 on both ends of the support ring 20 is 'a', where 'a' is an integer multiple of 3. The double-ended differential magnetic core winding frame 2 is fixedly installed inside the housing 1. The front rotating shaft assembly 3 and the rear rotating shaft assembly 4 each include an output sleeve 30 and an outer ring portion 31 connected to the periphery of the output sleeve 30. One end of the output sleeve 30 is connected to the inner wall of the housing 1 through one of the bearings 5. The outer ring portion 31 is located on the sector plate 22. On one side, both ends of the double-ended differential magnetic core winding frame 2 are provided with W-phase winding group, U-phase winding group and V-phase winding group. The W-phase winding group is formed by winding W-phase enameled wire on 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 on 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 on the winding post 21 according to the rule of winding every two 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 are connected and the other end is electrically connected to the control circuit. b receiving holes 310 are evenly distributed on the outer ring 31. Each receiving hole 310 is provided with a magnet 32. The bottom polarities of two adjacent magnets 32 are opposite.

[0024] Specifically, the W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire can be single-core enameled wire or multi-strand enameled wire. The enameled wire is mainly used to wind around the winding posts 21, so that it generates intermittent magnetism when energized to drive the magnet 32, thereby driving the front rotating shaft assembly 3 and the rear rotating shaft assembly 4 to rotate. According to the design rules, the number of winding posts 21 on both ends of the support ring 20 should be an integer multiple of 3. The attached diagram illustrates the case where both ends of the support ring 20 have 21 winding posts. Given any starting point for the winding posts, the 21 winding posts are designated as No. 1, No. 2, No. 3... No. 20, No. 21. According to the design rules, to improve the application flexibility, the winding posts 21 on the double-ended differential magnetic core winding frame 2 have multiple winding methods, each with different effects:

[0025] First winding method:

[0026] Front rotating shaft assembly side:

[0027] The winding posts through which the enameled wire of the W phase winding group passes are: No. 1, No. 4, No. 7, No. 10, No. 13, No. 16, and No. 19;

[0028] The winding posts through which the U-phase enameled wire of the U-phase winding group is wound are: No. 2, No. 5, No. 8, No. 11, No. 14, No. 17, and No. 20;

[0029] The winding posts through which the V-phase enameled wire of the V-phase winding group is wound are: No. 3, No. 6, No. 9, No. 12, No. 15, No. 18, and No. 21.

[0030] The control circuit can use a conventional three-phase motor circuit. The control circuit has W-phase connection terminal, U-phase connection terminal, and V-phase connection terminal. The connection method is to connect the ends of the W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire to each other, and then lead out the ends of the wires. The other ends of the W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire are respectively connected to the W-phase connection terminal, U-phase connection terminal, and V-phase connection terminal of the control circuit, which can realize the forward rotation of the front rotating shaft assembly 3.

[0031] Rear rotating shaft assembly side:

[0032] The winding posts through which the enameled wire of the W phase winding group passes are: No. 1, No. 4, No. 7, No. 10, No. 13, No. 16, and No. 19;

[0033] The winding posts through which the U-phase enameled wire of the U-phase winding group is wound are: No. 2, No. 5, No. 8, No. 11, No. 14, No. 17, and No. 20;

[0034] The winding posts through which the V-phase enameled wire of the V-phase winding group is wound are: No. 3, No. 6, No. 9, No. 12, No. 15, No. 18, and No. 21.

[0035] After connecting the ends of the W-phase, U-phase, and V-phase enameled wires together, and then leading out the other ends, connect them to the W-phase, U-phase, and V-phase connection terminals of the control circuit, respectively. This allows the rear rotating shaft assembly 4 to reverse. When using the motor of this invention as a power source for waterways, the alternating forward and reverse rotation can cancel out the rotational bias forces. When two motors operate simultaneously, they can cancel out the left and right bias forces.

[0036] The second winding method:

[0037] Front rotating shaft assembly side:

[0038] The winding posts through which the enameled wire of the W phase winding group passes are: No. 1, No. 4, No. 7, No. 10, No. 13, No. 16, and No. 19;

[0039] The winding posts through which the U-phase enameled wire of the U-phase winding group is wound are: No. 2, No. 5, No. 8, No. 11, No. 14, No. 17, and No. 20;

[0040] The winding posts through which the V-phase enameled wire of the V-phase winding group is wound are: No. 3, No. 6, No. 9, No. 12, No. 15, No. 18, and No. 21.

[0041] After connecting the ends of the W-phase, U-phase, and V-phase enameled wires to each other, and then leading out the ends of the wires, connect the other ends of the W-phase, U-phase, and V-phase enameled wires to the W-phase connection terminal, U-phase connection terminal, and V-phase connection terminal of the control circuit, respectively, so as to realize the forward rotation of the front rotating shaft assembly 3.

[0042] Rear rotating shaft assembly side:

[0043] The winding posts through which the V-phase enameled wire of the V-phase winding group is wound are: No. 1, No. 4, No. 7, No. 10, No. 13, No. 16, and No. 19;

[0044] The winding posts through which the U-phase enameled wire of the U-phase winding group is wound are: No. 2, No. 5, No. 8, No. 11, No. 14, No. 17, and No. 20;

[0045] The winding posts through which the enameled wire of the W phase winding group passes are: No. 3, No. 6, No. 9, No. 12, No. 15, No. 18, and No. 21.

[0046] After connecting the ends of the W-phase, U-phase, and V-phase enameled wires to each other, and then leading out the ends of the wires, connect the other ends of the W-phase, U-phase, and V-phase enameled wires to the W-phase connection terminal, U-phase connection terminal, and V-phase connection terminal of the control circuit, respectively, so as to realize the forward rotation of the rear rotating shaft assembly 4.

[0047] The third winding method:

[0048] The W-phase winding groups on side 3 of the front rotating shaft assembly and side 4 of the rear rotating shaft assembly share a set of W-phase enameled wire; the U-phase winding groups on side 3 of the front rotating shaft assembly and side 4 of the rear rotating shaft assembly share a set of U-phase enameled wire; and the V-phase winding groups on side 3 of the front rotating shaft assembly and side 4 of the rear rotating shaft assembly share a set of V-phase enameled wire. The winding methods are divided into two types:

[0049] Firstly:

[0050] The winding posts that the W-phase enameled wire passes through on both the front and rear rotating shaft assembly sides are: No. 1, No. 4, No. 7, No. 10, No. 13, No. 16, and No. 19.

[0051] The U-phase enameled wires are wound around the following posts on both the front and rear rotating shaft assembly sides: No. 2, No. 5, No. 8, No. 11, No. 14, No. 17, and No. 20.

[0052] The V-phase enameled wires are wound around the following posts on both the front and rear rotating shaft assembly sides: No. 3, No. 6, No. 9, No. 12, No. 15, No. 18, and No. 21.

[0053] Secondly:

[0054] The winding posts through which the W-phase enameled wire winds on the front rotating shaft assembly side are: No. 1, No. 4, No. 7, No. 10, No. 13, No. 16, and No. 19. The winding posts through which the W-phase enameled wire winds on the rear rotating shaft assembly side are: No. 2, No. 5, No. 8, No. 11, No. 14, No. 17, and No. 20.

[0055] The winding posts through which the U-phase enameled wire winds on the front rotating shaft assembly side are: No. 2, No. 5, No. 8, No. 11, No. 14, No. 17, and No. 20. The winding posts through which the U-phase enameled wire winds on the rear rotating shaft assembly side are: No. 3, No. 6, No. 9, No. 12, No. 15, No. 18, and No. 21.

[0056] The winding posts through which the V-phase enameled wire winds on the front rotating shaft assembly side are: No. 3, No. 6, No. 9, No. 12, No. 15, No. 18, and No. 21. The winding posts through which the V-phase enameled wire winds on the rear rotating shaft assembly side are: No. 1, No. 4, No. 7, No. 10, No. 13, No. 16, and No. 19.

[0057] The above method involves a group of W-phase enameled wires passing through winding posts 1, 4, 7, 10, 13, 16, and 19 of the front and rear rotating shaft kits. The U-phase and V-phase enameled wires are the same. This winding method allows the front and rear rotating shaft kits to rotate simultaneously in a fixed manner with a single group of W, U, and V wires. The advantage is that there are fewer connection points, making it suitable for use in fixed scenarios. The disadvantage is that it has lower flexibility.

[0058] The installation method of magnet 32 ​​depends on the winding method of winding post 21. Different winding methods result in different arrangements of magnet 32. 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 32 ​​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 32 ​​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.

[0059] The front rotating shaft assembly 3 and the rear rotating shaft assembly 4 can be modified according to functional requirements to change the inner structure of the output sleeve 30. For example, when applied to a scenario that propels airflow, they can be designed as fan blades that conform to airflow. When applied to a scenario that propels water flow, they can be changed to propellers that conform to water flow. Gears can also be added to the inner side of the output sleeve 30 and connected to a reduction gear to convert part of the rotation speed into power output. Users can assemble and apply them to various usage environments.

[0060] Based on the above embodiments, the output sleeve 30 of the front rotating shaft assembly 3 and the output sleeve 30 of the rear rotating shaft assembly 4 are connected and are an integral structure, with the outer ring 31 of the front rotating shaft assembly 3 fitted onto the output sleeve 30. In this combined rotor, the W-phase winding group, U-phase winding group, and V-phase winding group on the front rotating shaft assembly 3 and the rear rotating shaft assembly 4 each use a set of W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire, respectively, and the third winding method mentioned above is not adopted. When two electromagnetic energies drive a combined rotating wheel, the staggered arrangement of the winding posts 21 on both sides of the double-ended differential magnetic core winding frame 2 makes the rotation of the combined rotating wheel smoother, and the superposition effect of the rotational speed is better, resulting in a faster rotational speed. The corresponding winding method is that the two ends of the double-ended differential magnetic core winding frame 2 are wound separately, that is, each side has a set of W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire. When two electromagnetic energies drive two separate rotating wheels, the two separate rotating wheels can rotate in the same direction or rotate in opposite directions. However, the determining factor is whether the two sides of the double-ended differential magnetic core winding frame 2 are wound separately. When the two ends of the double-ended differential magnetic core winding frame 2 share a set of W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire, the rotation appears to be in opposite directions when viewed from the front of the motor. When the two ends of the double-ended differential magnetic core winding frame 2 each use a set of W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire, the rotation appears to be in the same direction or rotate in opposite directions when viewed from the front of the motor.

[0061] Based on the above embodiments, b = a / 3*4. The attached figure illustrates a case where both ends of the double-ended differential magnetic core winding frame 2 have 21 winding posts 21, and the corresponding number of receiving holes 310 is 28, that is, there are 28 magnets 32 on the outer ring 31.

[0062] Based on the above embodiments, b = a / 3*2. The attached figure illustrates the case where the double-ended differential magnetic core winding frame 2 has 21 winding posts 21, and the corresponding number of receiving holes 310 is 14, that is, there are 14 magnets 32 on the outer ring 31.

[0063] Based on the above embodiments, the total area of ​​one end face of the a sector plate 22 is equal to the total area of ​​one end face of the b magnets 32.

[0064] Based on the above embodiments, it also includes an upper end cover 6 and a lower end cover 7. The bottom outer edge of the upper end cover 6 and the top outer edge of the lower end cover 7 are provided with annular clearance grooves 60 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 60 of the upper end cover 6 and the lower end cover 7. A plurality of mounting screw holes 61 are distributed on the wall surface of the annular clearance groove 60. The end of the outer shell 1 is provided with countersunk holes 10 corresponding to the mounting screw holes 61. The countersunk holes 10 and the mounting screw holes 61 are connected by screws, which has the advantages of convenient disassembly and assembly and compact structure.

[0065] Based on the above embodiment, an annular step 11 is provided along the inner edge of the outer shell 1. The top surface of the support ring 20 contacts the bottom surface of the annular step 11. A front support ring 8 is engaged between the top surface of the annular step 11 and the bearing 5. A rear support ring 9 is engaged between the bottom of the support ring 20 and the bearing 5. One end of the rear support ring 9 is provided with a wire outlet notch 90. The outer shell 1 is provided with a wire outlet hole 12 communicating with the wire outlet notch 90. The front support ring 8 can limit the top of the double-ended differential magnetic core winding frame 2 and the bearing 5. The rear support ring 9 can limit the bottom of the double-ended differential magnetic core winding frame 2 and the bearing 5. One end of the W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire is led out through the wire outlet notch 90 and the wire outlet hole 12.

[0066] Based on the above embodiments, the double-ended differential magnetic core winding frame 2 is made of magnetically conductive metal. After the winding is energized, the sector plate 22 generates magnetism, thereby generating a driving force on the magnet 32.

[0067] 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 shaftless brushless motor based on differential kinetic energy in the electromagnetic field, characterized in that, The device includes a housing, a double-ended differential magnetic core winding frame, a front rotating shaft assembly, a rear rotating shaft assembly, two bearings, and a control circuit. The double-ended differential magnetic core winding frame includes a support ring, winding posts evenly distributed on both ends of the support ring, and a sector plate connected to one end of each winding post. The winding posts on both ends of the support ring are staggered, and the number of winding posts on both ends of the support ring is 'a', where 'a' is an integer multiple of 3. The double-ended differential magnetic core winding frame is fixedly installed inside the housing. Both the front and rear rotating shaft assemblies include an output sleeve and an outer ring connected to the periphery of the output sleeve. One end of the output sleeve is connected to the inner wall of the housing via one of the bearings. The outer ring is located on one side of the sector plate. Both ends of the double-ended differential magnetic core winding frame are provided with W... The system comprises three winding groups: 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 W-phase, U-phase, and V-phase enameled wires are wound on different winding posts. One end of each W-phase, U-phase, and V-phase enameled wire is connected to the other end, and the other end is electrically connected to the control circuit. The outer ring has b evenly distributed receiving holes, and each receiving hole contains a magnet. The bottom polarities of adjacent magnets are opposite.

2. The shaftless brushless motor based on differential kinetic energy in the electromagnetic field according to claim 1, characterized in that, The output sleeve of the front rotating shaft assembly and the output sleeve of the rear rotating shaft assembly are connected and are an integral structure, with the outer ring of the front rotating shaft assembly fitting onto the output sleeve.

3. A shaftless brushless motor based on differential kinetic energy in the electromagnetic field according to claim 1 or 2, characterized in that, b = a / 3 * 4.

4. A shaftless brushless motor based on differential kinetic energy in the electromagnetic field according to claim 1 or 2, characterized in that, b = a / 3 * 2.

5. A shaftless brushless motor based on differential kinetic energy in the electromagnetic field according to claim 1 or 2, characterized in that, The total area of ​​one end face of each of the a sector plates is equal to the total area of ​​one end face of each of the b magnets.

6. A shaftless brushless motor based on differential kinetic energy in the electromagnetic field according to claim 5, characterized in that, It also includes an upper end cover and a lower end cover. 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 end cover and the lower end cover. A plurality of mounting screw holes are distributed on the wall surface of the annular clearance groove. The end of the outer shell is provided with countersunk holes that correspond to the mounting screw holes. The countersunk holes and the mounting screw holes are connected by screws.

7. A shaftless brushless motor based on differential kinetic energy in the electromagnetic field according to claim 6, characterized in that, The inner edge of the outer casing is provided with an annular step. The top surface of the support ring contacts the bottom surface of the annular step. A front support ring is engaged between the top surface of the annular step and the bearing. A rear support ring is engaged between the bottom of the support ring and the bearing. One end of the rear support ring is provided with a wire outlet notch. The outer casing is provided with a wire outlet hole communicating with the wire outlet notch.

8. A shaftless brushless motor based on differential kinetic energy in the electromagnetic field according to claim 7, characterized in that, The double-ended differential magnetic core winding frame is made of magnetically conductive metal.

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