Differential kinetic energy shaftless brushless motor based on electromagnetic field

Abstract

The invention provides a differential kinetic energy shaftless brushless motor based on the electromagnetic field, which comprises a shell, a double-end differential magnetic core reel, a front rotating shaft kit, a rear rotating shaft kit, two bearings and a control circuit, and is characterized in that the double-end differential magnetic core reel comprises a support ring, winding posts and a sector plate, the winding posts on the two end surfaces of the support ring are arranged in a staggered manner, and the sector plate is arranged on the support ring; each of the front rotating shaft kit and the rear rotating shaft kit comprises an output sleeve and an outer ring part, W-phase winding groups, U-phase winding groups and V-phase winding groups are arranged at two ends of the double-end difference magnetic core winding frame, b accommodating holes are uniformly distributed in the outer ring parts, a magnet is arranged in each accommodating hole, and the polarities of the bottom ends of two adjacent magnets are opposite, so that the radial thickness of the motor can be reduced; and the passing space of airflow or water flow can be increased to a greater extent. When the rotating shaft sleeve pieces on the two sides are of a split structure, different power can be output for two power points, when the rotating shaft sleeve pieces on the two sides are of an integrated structure, output can be output for one power output point, and rotation is smoother.

Description

Technical Field

[0001] The present invention relates to the technical field of brushless motors, and in particular to a shaftless brushless motor based on differential kinetic energy in the electromagnetic field. Background Art

[0002] Most motors on the market have solid shafts. Due to the existence of the solid shaft, when they are used in aerodynamics or underwater propulsion, the blades need to be set on the solid shaft, which easily causes the solid shaft to be entangled with objects or hit by objects. Therefore, shaftless motors have emerged. They use a cylindrical output shaft instead of a solid shaft to meet the usage requirements of different occasions.

[0003] Existing shaftless motors have complex structures and are cumbersome to disassemble and maintain. The winding of their magnetic core frames is radial, and the rotor magnets are arranged radially on the inner side of 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 air or water to pass through the cylindrical output shaft, resulting in insufficient motor performance. Summary of the Invention

[0004] The problem to be solved by the present invention 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 space for air or water flow to pass through, and improve the performance of the motor.

[0005] To solve the above technical problems, a differential kinetic energy shaftless brushless motor based on the electromagnetic field provided by the present invention includes a housing, a double-ended differential core winding frame, a front rotating shaft kit, a rear rotating shaft kit, two bearings, and a control circuit. The double-ended differential core winding frame includes a support ring, winding posts evenly distributed on the two end surfaces of the support ring, and a fan-shaped plate connected to one end of the winding post. The winding posts on the two end surfaces of the support ring are staggered. The number of winding posts on the two end sides of the support ring is a, and a is an integer multiple of 3. The double-ended differential core winding frame is fixedly installed inside the housing. The front rotating shaft kit and the rear rotating shaft kit both include an output sleeve and an outer ring portion connected to the circumference of the output sleeve. One end of the output sleeve is connected to the inner wall of the housing through one of the bearings, and the outer ring portion is located on one side of the fan-shaped plate. Both ends of the double-ended differential magnetic core winding frame are 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 the W-phase enameled wire on the winding post according to the rule of winding every two winding posts. The U-phase winding group is formed by winding the U-phase enameled wire on the winding post according to the rule of winding every two winding posts. The V-phase winding group is formed by winding the V-phase enameled wire on the winding post according to the rule of winding every two winding posts. The W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire are respectively wound on different winding posts. One ends of the W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire are connected and the other ends are electrically connected to the control circuit. There are b accommodating holes evenly distributed on the outer ring part. A magnet is provided in each accommodating hole, and the bottom ends of two adjacent magnets have opposite polarities.

[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 integrated structure, and the outer ring portion of the front rotating shaft assembly is sleeved on the output sleeve.

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

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

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

[0010] Preferably, it also includes an upper end cover and a lower end cover, and the bottom outer edge of the upper end cover and the top outer edge of the lower end cover are both provided with an annular air avoidance groove that matches the end of the shell, and the top and bottom ends of the shell are respectively combined on the annular air avoidance grooves of the upper end cover and the lower end cover, and a number of mounting screw holes are distributed on the wall surface of the annular air avoidance groove, and the end of the shell is provided with a countersunk hole corresponding to the mounting screw hole, and the countersunk hole and the mounting screw hole are connected by screws.

[0011] Preferably, an annular step is provided on the inner edge of the shell, the top end surface of the support ring contacts the bottom end surface of the annular step, a front support ring is clamped between the top end surface of the annular step and the bearing, a rear support ring is clamped between the bottom of the support ring and the bearing, a wire outlet notch is provided at one end of the rear support ring, and a wire outlet hole connected to the wire outlet notch is provided on the shell.

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

[0013] The beneficial effects of the present invention are as follows: the present invention provides a differential kinetic energy shaftless brushless motor based on the electromagnetic field, which supplies power to the W-phase enameled wire, the U-phase enameled wire, and the V-phase enameled wire through a control circuit and controls the direction of current flow. The control circuit can realize the forward and reverse rotation, start and stop, speed adjustment and other functions of the front rotating shaft kit and the rear rotating shaft kit. The W-phase enameled wire, the U-phase enameled wire, and the V-phase enameled wire are wound on different winding poles according to the rule of winding every two winding poles, so as to form a W-phase winding group, a U-phase winding group, and a V-phase winding group at both ends of the double-ended differential magnetic core winding frame, first, the magnets are sequentially assembled into the receiving holes of the outer ring portion in a manner of polarity reversal, and the double-ended differential magnetic core winding frame is assembled into the outer shell, and then the front support ring and the rear support ring are respectively assembled from the top and bottom sides of the outer shell, the bearing is installed at one end of the output sleeve, and then the front rotating shaft kit and the rear rotating shaft kit with the bearing are respectively assembled into the front and rear ends of the outer shell, and the front support ring is It is stuck between the top of the support ring and the bearing, and the rear support ring is stuck between the bottom of the support ring and the bearing. The inner wall of the shell and one end of the output sleeve are connected through the bearing, and the upper end cover and the lower end cover are respectively combined at the two ends of the shell. The fan-shaped 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 column is axial, and the magnet is also axially arranged on the upper side of the winding column, which can reduce the radial thickness of the motor, and can maximize the passage space of airflow or water flow, improve the performance of the motor, and can realize the front rotating shaft kit and the rear rotating shaft kit to rotate in the same direction or in the opposite direction, meeting various usage requirements. Due to the staggered setting of the winding columns on the two end surfaces of the support ring, that is, the W-phase winding group, U-phase winding group, and V-phase winding group on the two end sides of the double-ended differential core winding frame are staggered, the difference in driving energy on both sides can be utilized. When the front rotating shaft kit and the rear rotating shaft kit are split structures, different powers can be output for two power points. When the front rotating shaft kit and the rear rotating shaft kit are integrated structures, power can be output for a combined power output point. The staggered W-phase winding group, U-phase winding group, and V-phase winding group can make the combined wheel rotate more smoothly, and the superposition effect of the rotation speed is better, and the speed is faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The schematic diagram of the external structure of the present invention is illustrated.

[0015] Figure 2 A cross-sectional view illustrating a front rotary shaft assembly and a rear rotary shaft assembly of the present invention as separate structures.

[0016] Figure 3 The exploded view illustrates that the front rotating shaft assembly and the rear rotating shaft assembly of the present invention are separate structures.

[0017] Figure 4 A cross-sectional view illustrating the integrated structure of the front and rear rotary shaft kits of the present invention.

[0018] Figure 5 An exploded view illustrating the front rotary shaft assembly and the rear rotary shaft assembly of the present invention as an integrated structure is shown.

[0019] Explanation of the accompanying figures: housing 1, countersunk hole 10, annular step 11, wire outlet hole 12, double-ended differential core winding frame 2, support ring 20, winding column 21, fan-shaped plate 22, front rotating shaft kit 3, output sleeve 30, outer ring portion 31, accommodating hole 310, magnet 32, rear rotating shaft kit 4, bearing 5, upper end cover 6, annular air avoidance groove 60, mounting screw hole 61, lower end cover 7, front support ring 8, rear support ring 9, wire outlet notch 90. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments.

[0021] Based on the described embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present disclosure.

[0022] refer to Figure 1-5 .

[0023] The present invention provides a differential kinetic energy shaftless brushless motor based on the electromagnetic field, comprising a shell 1, a double-ended differential core winding frame 2, a front rotating shaft kit 3, a rear rotating shaft kit 4, two bearings 5, and a control circuit. The double-ended differential core winding frame 2 comprises a support ring 20, winding posts 21 evenly distributed on the two end surfaces of the support ring 20, and a fan-shaped plate 22 connected to one end of the winding posts 21. The winding posts 21 on the two end surfaces of the support ring 20 are staggered. The number of winding posts 21 on the two end sides of the support ring 20 is a, and a is an integer multiple of 3. The double-ended differential core winding frame 2 is fixedly installed inside the shell 1. The front rotating shaft kit 3 and the rear rotating shaft kit 4 both comprise an output sleeve 30 and an outer ring portion 31 connected to the circumference of the output sleeve 30. One end of the output sleeve 30 is connected to the inner wall of the shell 1 through one of the bearings 5. The outer ring portion 31 is located at one end of the fan-shaped plate 22. On the other side, both ends of the double-ended differential magnetic core winding frame 2 are 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 the 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 the 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 the 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 respectively wound on different winding posts 21. One ends of the W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire are connected and the other ends are electrically connected to the control circuit. There are b accommodating holes 310 evenly distributed on the outer ring part 31. A magnet 32 ​​is provided in each accommodating hole 310, and the bottom ends of two adjacent magnets 32 have opposite polarities.

[0024] Specifically, the W-phase enameled wire, the U-phase enameled wire, and the V-phase enameled wire can be single-core enameled wire or multi-strand enameled wire. The function of the enameled wire is mainly to be wound around the winding pole 21, so that it generates intermittent magnetism when energized to push the magnet 32, thereby driving the front rotating shaft kit 3 and the rear rotating shaft kit 4 to rotate. According to the design rules, the number of winding poles 21 on both ends of the support ring 20 should be an integer multiple of 3. The accompanying drawings illustrate the case where the winding poles 21 on both ends of the support ring 20 have 21 winding poles. On the premise that the winding poles start arbitrarily, the 21 winding poles are defined as No. 1, No. 2, No. 3... No. 20, No. 21. According to the design rules, in order to improve the application flexibility of performance, there are a variety of winding methods for the winding poles 21 on the double-ended differential core winding frame 2, and each winding method has different effects:

[0025] The first winding method:

[0026] Front swivel axle kit side:

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

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

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

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

[0031] Rear swivel axle kit side:

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

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

[0034] The winding poles of the V-phase enameled wire of the V-phase winding group 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, and then leading out the tails, the other ends of the W-phase, U-phase, and V-phase enameled wires are connected to the W-phase, U-phase, and V-phase connection terminals of the control circuit, respectively, to achieve reverse rotation of the rear rotating shaft assembly 4. When the motor of the present invention is used as a water power source, the forward and reverse rotation modes can offset the rotational deflection force. When two motors are used simultaneously, the left and right deflection forces can be offset.

[0036] The second winding method:

[0037] Front swivel axle kit side:

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

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

[0040] The winding poles of the V-phase enameled wire of the V-phase winding group 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 enameled wire, U-phase enameled wire, and V-phase enameled wire to each other and leading out the wire tails, 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 connecting end, U-phase connecting end, and V-phase connecting end of the control circuit, thereby realizing forward rotation of the front rotating shaft kit 3.

[0042] Rear swivel axle kit side:

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

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

[0045] The winding poles around which the W-phase enameled wire of the W-phase winding group is wound 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 enameled wire, U-phase enameled wire, and V-phase enameled wire to each other and leading out the wire tails, 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 connecting end, U-phase connecting end, and V-phase connecting end of the control circuit, thereby realizing forward rotation of the rear rotating shaft kit 4.

[0047] The third winding method:

[0048] The W-phase winding group on the front rotating shaft kit 3 side and the W-phase winding group on the rear rotating shaft kit 4 side share a set of W-phase enameled wires, the U-phase winding group on the front rotating shaft kit 3 side and the U-phase winding group on the rear rotating shaft kit 4 side share a set of U-phase enameled wires, and the V-phase winding group on the front rotating shaft kit 3 side and the V-phase winding group on the rear rotating shaft kit 4 side share a set of V-phase enameled wires. There are two winding methods:

[0049] First:

[0050] The winding pins of the W-phase enameled wire on the front and rear rotating shaft kit sides are No. 1, No. 4, No. 7, No. 10, No. 13, No. 16, and No. 19;

[0051] The winding pins of the U-phase enameled wire on the front and rear rotating shaft kit sides are No. 2, No. 5, No. 8, No. 11, No. 14, No. 17, and No. 20;

[0052] The winding poles around which the V-phase enameled wire is wound on the front rotating shaft kit side and the rear rotating shaft kit side are: No. 3, No. 6, No. 9, No. 12, No. 15, No. 18, and No. 21.

[0053] Second:

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

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

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

[0057] The above method is a set of W-phase enameled wire passing through the No. 1, 4, 7, 10, 13, 16, and 19 winding poles of the front and rear rotating shaft kits. The U-phase enameled wire and the V-phase enameled wire are the same. This winding method is a single set of W, U, and V, which enables the front and rear rotating shaft kits to rotate in a fixed manner at the same time. The advantage is that there are fewer connection points and it is suitable for use in fixed scenarios. The disadvantage is that it has low flexibility.

[0058] The installation method of the magnet 32 ​​depends on the winding method of the winding post 21. Different winding methods will result in different arrangements of the magnet 32. For example, if the winding method of the winding post 21 is W corresponding to winding post No. 1, U corresponding to winding post No. 2, and V corresponding to winding post No. 3, then the magnetic direction arrangement at the bottom of the magnet 32 ​​is that the first accommodating hole is the N pole, the second accommodating hole is the S pole, the third accommodating hole is the N pole, the fourth accommodating hole is the S pole, and so on; if the winding method of the winding post 21 is W corresponding to winding posts No. 1 and No. 2, U corresponding to winding posts No. 3 and No. 4, and V corresponding to winding posts No. 5 and No. 6, then the magnetic direction arrangement at the bottom of the magnet 32 ​​is that the first and second accommodating holes are the N pole, the third and fourth accommodating holes are the S pole, the fifth and sixth accommodating holes are the N pole, the seventh and eighth accommodating holes are the S pole, and so on.

[0059] The front rotating shaft kit 3 and the rear rotating shaft kit 4 can change the inner structure of the output sleeve 30 according to functional requirements. For example, when applied to a scenario of pushing airflow, it can be designed as a fan blade that conforms to the flow of airflow. If applied to a scenario of pushing water flow, it can be changed to a propeller that conforms to the flow of water. Gears can also be added to the inside of the output sleeve 30 and connected to a reduction device to convert part of the speed into power output. Users can assemble it by themselves and apply it to various usage environments.

[0060] Based on the above embodiment, 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 form an integral structure, with the outer ring portion 31 of the front rotating shaft assembly 3 being fitted over the output sleeve 30. In this combined runner, the W-phase winding group, U-phase winding group, and V-phase winding group on the front rotating shaft assembly 3 and rear rotating shaft assembly 4 sides respectively use a set of W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire, and do not adopt the third winding method described above. When two electromagnetic energies drive a combined rotor, the staggered arrangement of the winding posts 21 on both sides of the double-ended differential core winding frame 2 can make the combined rotor rotate more smoothly, and the superposition effect of the rotation speed is better, and the rotation speed is faster. The corresponding winding method is that the two ends of the double-ended differential core winding frame 2 are wound separately, that is, there is a group of W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire on both sides; when two electromagnetic energies drive two separate rotors, the two separate rotors can be made to rotate in the same direction or one forward and one reverse, but the determining factor lies in whether the two sides of the double-ended differential core winding frame 2 are wound separately. When the two ends of the double-ended differential core winding frame 2 share a group of W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire, when the motor is viewed from the front, one forward and one reverse rotation is seen. When the two ends of the double-ended differential core winding frame 2 each use a group of W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire, when the motor is viewed from the front, it can be made to rotate in the same direction or one forward and one reverse rotation.

[0061] Based on the above embodiment, b=a / 3*4. The accompanying drawings illustrate a case where both ends of a double-ended differential core bobbin 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 portion 31 .

[0062] Based on the above embodiment, b=a / 3*2. The accompanying drawings illustrate a case where the double-ended differential core bobbin 2 has 21 winding posts 21 and 14 corresponding receiving holes 310 , ie, there are 14 magnets 32 on the outer ring portion 31 .

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

[0064] Based on the above embodiment, 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 both provided with an annular air avoidance groove 60 that matches the end of the shell 1. The top and bottom ends of the shell 1 are respectively combined on the annular air avoidance groove 60 of the upper end cover 6 and the lower end cover 7. A number of mounting screw holes 61 are distributed on the wall surface of the annular air avoidance groove 60. The end of the shell 1 is provided with a countersunk hole 10 corresponding to the mounting screw hole 61. The countersunk hole 10 and the mounting screw hole 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 on the inner edge of the housing 1. The top surface of the support ring 20 contacts the bottom surface of the annular step 11. A front support ring 8 is clamped between the top surface of the annular step 11 and the bearing 5. A rear support ring 9 is clamped 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 housing 1 is provided with a wire outlet hole 12 that communicates with the wire outlet notch 90. The front support ring 8 can limit the top of the double-ended differential core winding frame 2 and the bearing 5, and the rear support ring 9 can limit the bottom of the double-ended differential core winding frame 2 and the bearing 5. One end of the W-phase enameled wire, the U-phase enameled wire, and the V-phase enameled wire are led out through the wire outlet notch 90 and the wire outlet hole 12.

[0066] Based on the above embodiment, the double-ended differential core winding frame 2 is made of magnetic conductive metal. When 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 descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A shaftless brushless motor based on differential kinetic energy in the electromagnetic field, characterized in that: The invention comprises a shell, a double-ended differential core winding frame, a front rotating shaft kit, a rear rotating shaft kit, two bearings, and a control circuit. The double-ended differential core winding frame comprises a support ring, winding posts evenly distributed on both end surfaces of the support ring, and a fan-shaped plate connected to one end of the winding posts. The winding posts on both end surfaces of the support ring are staggered. The number of the winding posts on both end sides of the support ring is a, and a is an integer multiple of 3. The double-ended differential core winding frame is fixedly installed inside the shell. The front rotating shaft kit and the rear rotating shaft kit both comprise an output sleeve and an outer ring portion connected to the circumference of the output sleeve. One end of the output sleeve is connected to the inner wall of the shell through one of the bearings. The outer ring portion is located on one side of the fan-shaped plate. Both ends of the double-ended differential core winding frame are provided with W Phase winding group, U-phase winding group, V-phase winding group, the W-phase winding group is formed by W-phase enameled wire being wound on the winding post according to the rule of winding every two winding posts, the U-phase winding group is formed by U-phase enameled wire being wound on the winding post according to the rule of winding every two winding posts, the V-phase winding group is formed by V-phase enameled wire being wound on the winding post according to the rule of winding every two winding posts, the W-phase enameled wire, U-phase enameled wire, and V-phase enameled wire are respectively wound on different winding posts, 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 accommodating holes are evenly distributed on the outer ring part, each of the accommodating holes is provided with a magnet, and the bottom ends of two adjacent magnets have opposite polarities.

2. The differential kinetic energy shaftless brushless motor based on 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 form an integrated structure, and the outer ring portion of the front rotating shaft assembly is sleeved on the output sleeve.

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

6. The shaftless brushless motor based on differential kinetic energy in 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 both provided with an annular air avoidance groove that matches the end of the shell. The top and bottom ends of the shell are respectively combined on the annular air avoidance grooves of the upper end cover and the lower end cover. A number of mounting screw holes are distributed on the wall surface of the annular air avoidance groove. The end of the shell is provided with a countersunk hole corresponding to the mounting screw hole, and the countersunk hole and the mounting screw hole are connected by screws.

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

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

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