Disc type motor for unmanned aerial vehicle

Abstract

This invention discloses a disc motor for unmanned aerial vehicles (UAVs), belonging to the field of disc motor technology. It includes a housing, with an assembly component inside the housing. The assembly component includes a magnetic conductor slidably connected inside the housing. Positioning grooves are arranged in a circular array on the outer surface of the magnetic conductor. A storage frame is slidably connected inside the positioning grooves. Sliding grooves are formed on both sides of the inner wall of the positioning grooves. Slider blocks are fixedly connected to both sides of the storage frame. This invention uses the storage frame to store a permanent magnet block and mate it with the magnetic conductor, confining it inside the housing. When the permanent magnet block is assembled with the magnetic conductor through the storage frame, the storage frame is confined between the housing and the magnetic conductor, while the permanent magnet block is confined inside the storage frame. This avoids the adhesive used to bond the permanent magnet block from failing or loosening due to high temperatures, and also reduces physical damage to the permanent magnet block when fixed with bolts, thus ensuring the stability of the permanent magnet block after assembly.

Description

Technical Field

[0001] This invention relates to the field of disc motor technology, and more specifically, to a disc motor for unmanned aerial vehicles (UAVs). Background Technology

[0002] A disc motor, also known as an axial flux motor, is a type of motor where the magnetic flux path is parallel to the shaft. Its core characteristic is that the rotor and stator are arranged in a disc-like parallel configuration. Disc motors typically use permanent magnets (such as rare-earth permanent magnets) as the magnetic field source. These permanent magnets can provide a stable magnetic field without an external power supply, thus simplifying the motor's structure and improving efficiency. A magnetic conductor is used to guide and enhance the magnetic field generated by the permanent magnets, ensuring that the magnetic field acts uniformly on the rotor portion of the motor.

[0003] Before installing permanent magnet blocks, the magnetic pole orientation of each permanent magnet block needs to be determined to ensure that they can correctly generate the required magnetic field in the motor. Permanent magnet blocks are usually installed on the rotor or stator of the motor by adhesives, bolts or other special fixing devices. During the installation process, special care needs to be taken to protect the permanent magnet blocks from mechanical damage and to ensure that their magnetic pole orientation is correct. During installation and subsequent maintenance, appropriate measures need to be taken to protect the permanent magnet blocks from the effects of high temperature, mechanical impact and chemical corrosion.

[0004] In existing technologies, the disc motors used in drones generate high temperatures during operation, especially under high power output or long-term continuous operation. The difference in the coefficients of thermal expansion between the permanent magnet and the adhesive causes them to expand at different rates, thereby generating stress at the bonding interface. If this stress exceeds the adhesive's tolerance, it will lead to bonding failure and loosening of the permanent magnet, resulting in uneven distribution of the motor's magnetic field, which in turn affects the motor's output torque and efficiency. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of this invention is to provide a disc motor for unmanned aerial vehicles.

[0006] To solve the above problems, the present invention adopts the following technical solution, which can realize the permanent magnet block being confined between the shell and the magnetic conductor by the storage frame. On the one hand, it avoids the adhesive used to stick the permanent magnet block from failing or loosening due to high temperature, and on the other hand, it reduces the physical damage to the permanent magnet block when it is fixed by bolts.

[0007] A disc motor for a drone includes a housing and a top cover disposed on the upper side of the housing. A positioning seat is provided through the lower side of the interior of the housing. A rotor is movably mounted inside the positioning seat. The rotor passes through the top cover. An assembly component is provided inside the housing.

[0008] The assembly component includes a magnetic conductor slidably connected inside the housing. The outer surface of the magnetic conductor has positioning grooves arranged in a ring array. A storage frame is slidably connected inside the positioning grooves. Sliding grooves are formed on both sides of the inner wall of the positioning grooves. Slider blocks are fixedly connected to the left and right sides of the storage frame. The sliders are slidably connected inside the sliding grooves. Positioning holes are arranged in a ring array on the outer surface of the positioning seat. After the slider moves away from the housing, it is inserted into the positioning hole. A permanent magnet is set inside the storage frame.

[0009] Furthermore, the permanent magnet block is inserted into the outside of the positioning seat, the positioning groove is connected to the slide groove, the side of the slider away from the housing is rectangular, and the shape of the end of the slider away from the housing is adapted to the shape of the positioning hole.

[0010] Furthermore, the positioning base is provided with a positioning component on both its inner and outer sides, and the positioning component includes an embedding groove formed on the upper side of the positioning base.

[0011] Furthermore, a movable ring is slidably connected inside the embedding groove, and a pressure spring is fixedly connected in a ring array between the lower side of the movable ring and the lower side of the embedding groove. A pin is fixedly connected in a ring array between the lower side of the movable ring and the upper side of the slider has a through slot, and the pin moves downward and inserts into the slot.

[0012] Furthermore, the inner wall of the embedding groove is provided with a first internal thread, the upper side of the positioning seat is rotatably connected to a rotating ring, the outer surface of the rotating ring is provided with a first external thread, the first internal thread and the first external thread are threadedly connected, and the lower side of the rotating ring is in extrusion contact with the upper side of the movable ring.

[0013] Furthermore, the inner and outer sides of the housing are provided with a locking assembly, which includes connecting strips arranged in a ring array and fixedly connected to the upper side of the rotating ring.

[0014] Furthermore, the connecting strip is L-shaped, with its vertical portion penetrating the top cover, and multiple connecting strips together wrap around the outside of the rotor.

[0015] Furthermore, a second external thread is provided on the outer side of the vertical part of the connecting strip, and a collar is provided on the outer surface of multiple connecting strips. A second internal thread is provided on the inner surface of the collar. The second external thread and the second internal thread are threadedly connected. The lower side of the rotating ring is in contact with the upper side of the permanent magnet block.

[0016] Furthermore, the positioning seat is provided with a guide component both inside and outside, and the guide component includes a delivery pipe disposed inside the positioning seat.

[0017] Furthermore, the input end of the conveying pipe passes through the lower side of the positioning seat, and the input end of the conveying pipe is connected to an external cooling device. The outer surface of the positioning seat has through holes arranged in a ring array. The lower side of the storage frame has a notch, which is connected to the interior of the storage frame and to the conveying pipe.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] (1) The present invention stores the permanent magnet block in a storage frame and connects it with the magnetic conductor and confines it inside the shell. When the permanent magnet block is assembled with the magnetic conductor through the storage frame, the storage frame is confined between the shell and the magnetic conductor, while the permanent magnet block is confined inside the storage frame. On the one hand, this avoids the adhesive used to stick the permanent magnet block from failing or loosening due to high temperature, and on the other hand, it reduces the physical damage to the permanent magnet block when it is fixed by bolts, thereby ensuring the stability of the permanent magnet block after assembly.

[0020] (2) The present invention uses a movable ring to insert a pin into the positioning groove after moving downward, and further restricts the permanent magnet block. Since the rotating ring can restrict the storage frame through the pin below the movable ring after moving downward, the storage frame and the permanent magnet block inside it are locked inside the positioning groove. When the magnetic conductor is taken out from the inside of the housing, the permanent magnet block will also be locked to prevent the permanent magnet block from loosening. At the same time, the permanent magnet block can also be quickly disassembled and assembled, which improves the convenience of assembling the permanent magnet block.

[0021] (3) The present invention uses a collar to lock the connecting strip and the top cover, and selects different maintenance methods according to the state of the top cover. When the connecting strip is locked to the top cover by the collar, the top cover can be rotated to quickly replace the magnetic block, while the magnetic conductor can be quickly removed if the top cover is not rotated. If the collar does not lock the top cover, the top cover can be directly removed. At this time, the state inside the housing can be observed so as to make corresponding adjustments and assembly according to the state inside the housing, thereby improving the flexibility of the disc motor. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 3 This is a cross-sectional view of the housing of the present invention;

[0025] Figure 4 This is a cross-sectional structural schematic diagram of the magnetic conductor of the present invention;

[0026] Figure 5 This is a schematic diagram of the slide groove of the present invention;

[0027] Figure 6 This is a cross-sectional view of the groove structure of the present invention;

[0028] Figure 7 This is a cross-sectional view of the positioning seat of the present invention;

[0029] Figure 8 This is a partially enlarged schematic diagram of the rotating ring of the present invention.

[0030] Explanation of the labels in the diagram:

[0031] 1. Housing; 11. Top cover; 12. Positioning seat; 13. Rotor; 2. Assembly components; 21. Magnetic conductor; 22. Positioning groove; 23. Storage frame; 24. Slide groove; 25. Slider; 26. Positioning hole; 27. Permanent magnet; 28. Positioning assembly; 281. Embedded groove; 282. Movable ring; 283. Pressure spring; 284. Pin; 285. Slot; 286. First internal thread; 287. Rotating ring; 288. First external thread; 29. ​​Locking assembly; 291. Connecting bar; 292. Second external thread; 293. Collar; 294. Second internal thread; 3. Guide component; 31. Conveying pipe; 32. Through hole; 33. Notch. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1 to 8 A disc motor for a drone includes a housing 1 and a top cover 11 disposed on the upper side of the housing 1. A positioning seat 12 is provided through the lower side of the interior of the housing 1. A rotor 13 is movably installed inside the positioning seat 12. The rotor 13 passes through the top cover 11. An assembly component 2 is provided inside the housing 1.

[0034] Assembly component 2 includes a magnetic conductor 21 slidably connected inside the housing 1. The outer surface of the magnetic conductor 21 has positioning grooves 22 arranged in a ring array. A storage frame 23 is slidably connected inside the positioning grooves 22. Slide grooves 24 are provided on both sides of the inner wall of the positioning grooves 22. Slider blocks 25 are fixedly connected to the left and right sides of the storage frame 23. The sliders 25 are slidably connected inside the slide grooves 24. Positioning holes 26 are arranged in a ring array on the outer surface of the positioning seat 12. After the slider 25 moves away from the housing 1, it is inserted into the positioning hole 26. A permanent magnet block 27 is provided inside the storage frame 23.

[0035] The permanent magnet 27 is inserted into the outside of the positioning seat 12. The positioning groove 22 is connected to the slide groove 24. The side of the slider 25 away from the housing 1 is rectangular. The shape of the end of the slider 25 away from the housing 1 is adapted to the shape of the positioning hole 26.

[0036] By adopting the above technical solution, when assembling the permanent magnet block 27, the permanent magnet block 27 is installed inside the storage frame 23. Then, the sliders 25 on both sides of the storage frame 23 are aligned with the positioning grooves 22 on the outside of the magnetic conductor 21, with one rectangular end of the slider 25 first inserted into the groove 24. As the storage frame 23 enters the positioning groove 22, the sliders 25 on both sides will also slide inside the groove 24. When the storage frame 23 is completely embedded in the positioning groove 22, one end of the slider 25 will also be inserted into the positioning hole 26. After the multiple permanent magnet blocks 27 are assembled, the magnetic conductor 21 together with the permanent magnet blocks 27 is inserted into the inside of the housing 1 and wrapped around the outside of the positioning seat 12. Then, the rotor 13 is inserted into the inside of the positioning seat 12. After the top cover 11 is connected to the housing 1, the rotor 13 is inserted into the positioning seat 12. When the rotor 13 passes through the top cover 11, the magnetic conductor 21 and the permanent magnet block 27 work together. The magnetic conductor 21 enhances and guides the magnetic field generated by the permanent magnet block 27, ensuring that the magnetic field can act evenly on all parts of the housing 1. The permanent magnet block 27 provides the necessary magnetic field source and interacts with the magnetic field generated by the current in the rotor 13, thereby generating driving torque. When the permanent magnet block 27 is assembled with the magnetic conductor 21 through the storage frame 23, the storage frame 23 is confined between the housing 1 and the magnetic conductor 21, while the permanent magnet block 27 is confined inside the storage frame 23. On the one hand, this avoids the adhesive used to stick the permanent magnet block 27 from failing or loosening due to high temperature. On the other hand, it reduces the physical damage to the permanent magnet block 27 when it is fixed by bolts, thereby ensuring the stability of the permanent magnet block 27 after assembly.

[0037] like Figures 3 to 8 As shown, the positioning base 12 is provided with a positioning component 28 on both its inner and outer sides. The positioning component 28 includes an embedding groove 281 formed on the upper side of the positioning base 12.

[0038] A movable ring 282 is slidably connected inside the embedded groove 281. A pressure spring 283 is fixedly connected between the lower side of the movable ring 282 and the lower side of the embedded groove 281 in a ring array. A pin 284 is fixedly connected between the lower side of the movable ring 282 in a ring array. A slot 285 is opened through the upper side of the slider 25. After the pin 284 moves downward, it is inserted into the inside of the slot 285.

[0039] The inner wall of the embedded groove 281 is provided with a first internal thread 286. The upper side of the positioning seat 12 is rotatably connected to a rotating ring 287. The outer surface of the rotating ring 287 is provided with a first external thread 288. The first internal thread 286 is threadedly connected to the first external thread 288. The lower side of the rotating ring 287 is in contact with the upper side of the movable ring 282.

[0040] By adopting the above technical solution, after the slider 25 is inserted into the positioning hole 26, one end of the slider 25 will extend into the insertion groove 281. At this time, the slot 285 on the surface of the slider 25 will also enter the insertion groove 281. Then, the rotating ring 287 is connected to the insertion groove 281 and the rotating ring 287 is turned. Because the first external thread 288 on the outside of the rotating ring 287 is threaded to the first internal thread 286 inside the insertion groove 281, as the rotating ring 287 starts to rotate, the rotating ring 287 will gradually lock with the insertion groove 281 and slowly retract into the insertion groove 281. As the rotating ring 287 gradually moves downward, when the rotating ring 287 contacts the movable ring 282 inside the insertion groove 281, the downward-moving rotating ring 287 will drive the movable ring 282 to move downward, so that the movable ring 282 compresses the pressure spring 283. At the same time, the pin 284 below the movable ring 282 will also be inserted into the slot 285. If the rotating ring 287 is turned in the opposite direction, the rotating ring 287 will slowly move upward. At this time, the pressure spring 283 below the movable ring 282 will push the movable ring 282 upward. As the pin 284 below the movable ring 282 disengages from the slot 285 on the surface of the slider 25, the restriction of the movable ring 282 on the storage frame 23 and the permanent magnet block 27 will be released. Since the rotating ring 287 can restrict the storage frame 23 through the pin 284 below the movable ring 282 after moving downward, the storage frame 23 and the permanent magnet block 27 inside it are locked inside the positioning groove 22. When the magnetic conductor 21 is taken out from the inside of the housing 1, the permanent magnet block 27 will also be locked to prevent the permanent magnet block 27 from becoming loose. At the same time, the permanent magnet block 27 can also be quickly disassembled and assembled, which improves the convenience of assembling the permanent magnet block 27.

[0041] like Figures 3 to 6 As shown, the inner and outer sides of the housing 1 are provided with a locking component 29. The locking component 29 includes connecting bars 291 arranged in a ring array and fixedly connected to the upper side of the rotating ring 287. The connecting bars 291 are L-shaped, and the vertical part of the connecting bars 291 penetrates the top cover 11. Multiple connecting bars 291 together wrap around the outside of the rotor 13.

[0042] The outer side of the vertical part of the connecting strip 291 is provided with a second external thread 292, and the outer surfaces of multiple connecting strips 291 are jointly fitted with a collar 293. The inner surface of the collar 293 is provided with a second internal thread 294. The second external thread 292 and the second internal thread 294 are threadedly connected. The lower side of the rotating ring 287 is pressed into contact with the upper side of the permanent magnet block 27.

[0043] By adopting the above technical solution, when it is necessary to remove a single magnetic conductor 21, the collar 293 is placed on the outside of the multiple connecting strips 291, so that the second internal thread 294 inside the collar 293 corresponds to the second external thread 292 outside the connecting strip 291. As the collar 293 begins to rotate, because the second external thread 292 outside the connecting strip 291 and the second internal thread 294 inside the collar 293 are threadedly engaged, the collar 293 locks the connecting strip 291. If the collar 293 contacts the upper side of the top cover 11, when the top cover 11 is lifted, because the connecting strip 291 is locked to the top cover 11 by the collar 293, it is possible to choose whether to replace the permanent magnet 27. If the permanent magnet 27 is replaced, the top cover 11 can be turned, so that the top cover 11 drives the rotating ring 287 to rotate through the connecting strip 291. After the rotating ring 287 releases the lock on the permanent magnet 27, the permanent magnet 27 can be removed from the storage frame 23. With the help of tools, if it is necessary to remove the magnetic conductor 21 directly, the top cover 11 can be lifted directly upwards. Because the rotating ring 287 is locked with the positioning seat 12, the positioning seat 12 can be removed along with the permanent magnet 27. When inspecting the inside of the housing 1, the collar 293 does not need to be placed on the outside of the connecting strip 291. If the top cover 11 is lifted upwards, the top cover 11, which is not locked by the collar 293, will be removed directly from the outside of the connecting strip 291, thus exposing the inside of the housing 1. Since the connecting strip 291 is locked with the top cover 11 by the collar 293, the top cover 11 can be rotated to quickly replace the magnetic block. If the top cover 11 is not rotated, the magnetic conductor 21 can be quickly removed. If the collar 293 is not locked with the top cover 11, the top cover 11 can be removed directly. At this time, the state inside the housing 1 can be observed so that corresponding adjustments and assembly can be made according to the state inside the housing 1, thereby improving the flexibility of the disc motor.

[0044] like Figures 2 to 4 As shown, the positioning base 12 is provided with a guide component 3 both inside and outside, and the guide component 3 includes a delivery pipe 31 disposed inside the positioning base 12.

[0045] The input end of the conveying pipe 31 passes through the lower side of the positioning seat 12. The input end of the conveying pipe 31 is connected to the external cooling device. The outer surface of the positioning seat 12 has through holes 32 arranged in a ring array. The lower side of the storage frame 23 has a notch 33. The notch 33 is connected to the interior of the storage frame 23 and is connected to the conveying pipe 31.

[0046] By adopting the above technical solution, when the external cooling device is started, the cold air generated by the external cooling device will be sent into the interior of the conveying pipe 31, and then discharged into the interior of the housing 1 through the through hole 32 on the outside of the positioning seat 12. As the cold air enters the interior of the housing 1, some of the cold air will enter the contact point between the permanent magnet block 27 and the storage frame 23 through the notch 33, and cool down the lower side of the permanent magnet block 27. Since the cold air continuously cools down the interior of the housing 1, it not only avoids overheating inside the housing 1 and affecting the performance and life of the motor, but also reduces the impact of heat on the permanent magnet block 27 and the adhesive, so as to ensure the stability of the permanent magnet block 27 after it is installed inside the housing 1.

[0047] Working principle: When assembling the permanent magnet block 27, the permanent magnet block 27 is installed inside the storage frame 23. Then, the storage frame 23 is inserted into the positioning groove 22, and the sliders 25 on both sides will slide inside the sliding groove 24. When the storage frame 23 is fully embedded in the positioning groove 22, one end of the slider 25 will be inserted into the positioning hole 26. As the slider 25 is inserted into the positioning hole 26, one end of the slider 25 will extend into the embedding groove 281. Then, the rotating ring 287 is turned. Because the first external thread 288 on the outside of the rotating ring 287 is threaded with the first internal thread 286 inside the embedding groove 281, after the rotating ring 287 starts to rotate, the rotating ring 287... The rotating ring 287 slowly retracts into the embedding groove 281. When the rotating ring 287 contacts the movable ring 282 inside the embedding groove 281, it will drive the movable ring 282 to move downward until the pin 284 below the movable ring 282 is inserted into the slot 285. After the rotating ring 287 is turned in the opposite direction, the rotating ring 287 slowly moves upward. At this time, the pressure spring 283 below the movable ring 282 will push the movable ring 282 upward. The restriction of the movable ring 282 on the storage frame 23 and the permanent magnet block 27 is gradually released. When it is necessary to remove a single magnetic conductor 21, the collar 293 is put on the outside of the multiple connecting strips 291. Because of the second external thread 292 on the outside of the connecting strip 291, The collar 293 engages with the second internal thread 294 inside the collar 293, allowing the collar 293 to be locked by the connecting strip 291. After the collar 293 contacts the upper side of the top cover 11, if the permanent magnet 27 is to be replaced, the top cover 11 can be turned, causing the top cover 11 to drive the rotating ring 287 to rotate via the connecting strip 291. After the rotating ring 287 releases the lock on the permanent magnet 27, the permanent magnet 27 can be pried out of the storage frame 23 with a tool. If it is necessary to remove the magnetic conductor 21 directly, the top cover 11 can be lifted directly upwards. When inspecting the inside of the housing 1, the collar 293 does not need to be fitted on the outside of the connecting strip 291, and then the top cover 11 can be lifted upwards. After the multiple permanent magnet blocks 27 are assembled, the magnetic conductor 21, together with the permanent magnet blocks 27, is inserted into the interior of the housing 1 and wrapped around the outside of the positioning seat 12. Then, the rotor 13 is inserted into the interior of the positioning seat 12. After the top cover 11 is docked with the housing 1, the rotor 13 will pass through the top cover 11. When the external cooling device is started, the cold air generated by the external cooling device will be sent into the interior of the conveying pipe 31, and then discharged into the interior of the housing 1 through the through hole 32 on the outside of the positioning seat 12. As the cold air enters the interior of the housing 1, some of the cold air will pass through the notch 33 into the contact point between the permanent magnet block 27 and the storage frame 23, and cool the lower side of the permanent magnet block 27.

[0048] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A disc motor for a drone, comprising a housing (1) and a top cover (11) disposed on the upper side of the housing (1), wherein a positioning seat (12) is provided through the lower side of the interior of the housing (1), and a rotor (13) is movably mounted inside the positioning seat (12), the rotor (13) penetrating the top cover (11), characterized in that: The housing (1) is provided with assembly components (2) inside; The assembly component (2) includes a magnetic conductor (21) slidably connected inside the housing (1). The outer surface of the magnetic conductor (21) is provided with positioning grooves (22) arranged in a ring array. A storage frame (23) is slidably connected inside the positioning grooves (22). Slide grooves (24) are provided on both sides of the inner wall of the positioning grooves (22). Slider blocks (25) are fixedly connected to both sides of the storage frame (23). The sliders (25) are slidably connected inside the slide grooves (24). The outer surface of the positioning seat (12) is provided with positioning holes (26) arranged in a ring array. After the slider (25) moves away from the housing (1), it is inserted into the positioning hole (26). A permanent magnet block (27) is provided inside the storage frame (23). The positioning base (12) is provided with a positioning component (28) on both the inner and outer sides. The positioning component (28) includes an embedding groove (281) opened on the upper side of the positioning base (12). The inner side of the embedded groove (281) is slidably connected to a movable ring (282). A pressure spring (283) is fixedly connected in a ring array between the lower side of the movable ring (282) and the lower side of the inner side of the embedded groove (281). A pin (284) is fixedly connected in a ring array between the lower side of the movable ring (282). A slot (285) is opened through the upper side of the slider (25). After the pin (284) moves downward, it is inserted into the inside of the slot (285). The inner wall of the embedded groove (281) is provided with a first internal thread (286), and the upper side of the positioning seat (12) is rotatably connected to a rotating ring (287). The outer surface of the rotating ring (287) is provided with a first external thread (288). The first internal thread (286) and the first external thread (288) are threadedly connected. The lower side of the rotating ring (287) is pressed against the upper side of the movable ring (282).

2. A disc motor for a drone according to claim 1, characterized in that: The permanent magnet block (27) is inserted into the outside of the positioning seat (12), the positioning groove (22) is connected to the slide groove (24), the slider (25) is rectangular on the side away from the housing (1), and the shape of the end of the slider (25) away from the housing (1) is adapted to the shape of the positioning hole (26).

3. A disc motor for a drone according to claim 1, characterized in that: The housing (1) is provided with a locking component (29) on both the inner and outer sides. The locking component (29) includes a connecting strip (291) arranged in a ring array and fixedly connected to the upper side of the rotating ring (287).

4. A disc motor for a drone according to claim 3, characterized in that: The connecting strip (291) is L-shaped, and the vertical part of the connecting strip (291) penetrates the top cover (11). Multiple connecting strips (291) together wrap around the outside of the rotor (13).

5. A disc motor for a drone according to claim 4, characterized in that: The outer side of the vertical part of the connecting strip (291) is provided with a second external thread (292), and the outer surfaces of multiple connecting strips (291) are jointly fitted with a collar (293). The inner surface of the collar (293) is provided with a second internal thread (294). The second external thread (292) and the second internal thread (294) are threadedly connected. The lower side of the rotating ring (287) is pressed against the upper side of the permanent magnet block (27).

6. A disc motor for a drone according to claim 1, characterized in that: The positioning seat (12) is provided with a guide component (3) both inside and outside, and the guide component (3) includes a delivery pipe (31) disposed inside the positioning seat (12).

7. A disc motor for a drone according to claim 6, characterized in that: The input end of the conveying pipe (31) passes through the lower side of the positioning seat (12). The input end of the conveying pipe (31) is connected to the external cooling device. The outer surface of the positioning seat (12) is provided with through holes (32) arranged in a ring array. The lower side of the storage frame (23) is provided with a notch (33). The notch (33) is connected to the interior of the storage frame (23). The notch (33) is connected to the conveying pipe (31).

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