A high torque motor for multi-rotor drones

Abstract

The present application provides a high-torque motor for a multi-rotor UAV, the top surface of which is connected to a support frame with a stator mounting seat, and a winding is provided circumferentially at the center of the top of the stator mounting seat; a heat dissipation hole and a dust-proof baffle inside the ventilation hole opened inside the stator mounting seat are rotated at a limited angle, and a ground closing plate is fitted and connected to the bottom surface of the stator mounting seat, and the ground closing plate is limitedly slid above the support frame, and the bottom end of the ground closing plate is supported on the ground for pushing the dust-proof baffle to close against the top surface; the present invention provides dust-proof baffles inside the heat dissipation holes and ventilation holes at the bottom of the mounting seat, and allows the limited baffles to rotate at a limited angle inside the ventilation holes and heat dissipation holes, so that when the stator mounting seat drives the wing to rotate, the dust blown by the wing is blocked outside the stator mounting seat, thereby ensuring the dust-proof effect of the motor before take-off.

Description

Technical Field

[0001] The present invention relates to the field of multi-rotor UAV motors, and in particular to a high-torque motor for a multi-rotor UAV. Background Art

[0002] A multi-rotor drone is a special type of unmanned rotorcraft with three or more rotor shafts. This type of drone generates lift thrust by rotating the rotors through the rotation of the electric motors on each shaft, and controls the trajectory of the aircraft by changing the relative speed between different rotors. The rotor collective pitch of a multi-rotor drone is fixed, which is different from the variable pitch of traditional helicopters. They usually have good maneuverability, can take off and land vertically, and hover, and are suitable for low-altitude, low-speed, vertical take-off and landing, and hovering flight.

[0003] The high-torque motor used in the multi-rotor drone drive is usually installed at the edge of the drone and extended to the far end of the drone through a mounting frame. The drone is driven to fly using evenly distributed wings. When the drone takes off and lands, the wings will rotate to a certain speed on the ground through the high-torque motor to quickly complete the take-off of the drone. However, in the process of accelerating the wings of the drone on the ground, the wind force exerted by the wings on the ground will lift up the dust on the ground. As the wings blow air to the bottom of the high-torque motor, the dust will enter the inside of the motor with the air and stick to and accumulate on the inside of the motor.

[0004] Therefore, we made improvements to this and proposed a high-torque motor for multi-rotor drones. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that dust may enter the interior of the existing high-torque motor for driving a multi-rotor drone when the drone takes off and lands.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides the following high-torque motor for a multi-rotor drone to improve the above-mentioned problem.

[0007] The specific application is as follows:

[0008] A high torque motor for a multi-rotor drone, comprising:

[0009] A support frame is connected to the top surface of a stator mounting seat, and a winding is arranged circumferentially at the center of the top of the stator mounting seat;

[0010] The dust-proof baffles inside the heat dissipation holes and ventilation holes opened inside the stator mounting seat are rotated at a limited angle, and the bottom surface of the stator mounting seat is fitted with a ground closing plate, which is limitedly slid above the support frame, and the bottom end of the ground closing plate is supported on the ground and is used to push the dust-proof baffles to close;

[0011] A sleeve rotor is fitted on the outside of the stator mounting seat and rotates on the inner side of the bearing at the center of the stator mounting seat;

[0012] A closed dust plate hinged to the inside of the ventilation and heat dissipation opening opened on the top surface of the outer side wall of the casing rotor;

[0013] A wind resistance transmission member connected to the inner bottom surface of the ventilation and heat dissipation opening and extending to both sides of the casing rotor, the wind resistance transmission member drives the closed dust plate to open and close;

[0014] Drain blocks are distributed in an annular shape and at equal intervals on the circumference of the inner wall of the casing rotor, and the top of the drainage block is located directly below the bottom end of the closed dustproof plate.

[0015] As a preferred technical solution of the present application, a combined mounting rod is vertically connected to the top surface of the position where the support frame is connected to the stator mounting seat, a fixing screw is passed through the inner side of the combined mounting rod, and the other end of the fixing screw is connected to the inside of the stator mounting seat.

[0016] As a preferred technical solution of the present application, a rotor assembly block is provided at the center of the top surface of the stator mounting seat, the windings are distributed in a ring shape on the circumference of the outer surface of the rotor assembly block, the heat dissipation holes are opened on the inner side of the rotor assembly block, the ventilation holes and heat dissipation holes inside the stator mounting seat and the rotor assembly block are distributed in a ring shape with equal distances, a combination mounting groove is opened between the heat dissipation holes, and the end of the fixing screw away from the combination mounting rod is threadedly screwed into the combination mounting groove.

[0017] As a preferred technical solution of the present application, an angle limiter is provided at the position where the dustproof baffle is connected to the heat dissipation hole and the ventilation hole, and the angle limiter includes an embedded hinge groove opened at the center of the side of the heat dissipation hole and the ventilation hole, hinge holes are opened on both sides of the embedded hinge groove, and two groups of angle limiter grooves distributed circumferentially are opened on the inner side wall of the hinge hole, a rotating fixed hinge rod is passed through the hinge hole, and two groups of angle limiter blocks distributed circumferentially are provided on the outer walls on both sides of the middle part of the fixed hinge rod, the angle limiter blocks rotate inside the angle limiter groove, and the middle part of the fixed hinge rod is fixedly connected to the dustproof baffle.

[0018] As a preferred technical solution of the present application, a avoidance hole is provided at the center of the ground closing plate, and a circular limiting hole with equidistant distribution is provided around the avoidance hole. The ground closing plate slides on the outside of the combined mounting rod through the limiting holes, and vertically connected support legs are fixed at the circumferential position of the bottom surface of the ground closing plate, and the support legs extend below the bottom surface of the support frame.

[0019] As a preferred technical solution of the present application, a central assembly rod is connected to the inner center of the casing rotor, a wing connecting rod is connected to the center of the top surface of the casing rotor, and permanent magnets are fixed to the side surfaces of the inner wall of the casing rotor in an annular and equidistant manner, and the permanent magnets are located between the drainage blocks.

[0020] As a preferred technical solution of the present application, a movable hinge is provided on the inner side of the top of the closed dustproof plate, both ends of the movable hinge are hinged to the inner top surface of the casing rotor, and a driven slide groove is provided on the inner side of the bottom surface of the closed dustproof plate.

[0021] As a preferred technical solution of the present application, the windage transmission component includes a rotating interlocking groove, a limiting rod is connected at the center of the rotating interlocking groove, a clockwork spring is sleeved on the outer side of the bottom of the limiting rod, and a rotatably connected windage transmission rod is sleeved on the outer side of the limiting rod.

[0022] As a preferred technical solution of the present application, an insertion groove is provided at the position where the wind resistance transmission rod is connected to the limit rod, and a limiting groove is provided deep inside the insertion groove. The limiting groove is limited to rotate at the top of the limit rod, and the two ends of the clockwork spring are respectively fixed to the outer wall of the limit rod and the inner wall of the insertion groove; a lifting groove is provided at the top of one end of the wind resistance transmission rod located inside the casing rotor, and the lifting groove is slidably connected to the limiting lifting rod, the top of the limiting lifting rod is penetrated through the outside of the wind resistance transmission rod, and the end of the top of the limiting lifting rod located on the outside of the wind resistance transmission rod is connected to a limiting spherical block, the limiting lifting rod is penetrated inside the driven groove, and the limiting spherical block is limited to slide on the inner surface of the driven groove.

[0023] As a preferred technical solution of the present application, the top of the drainage block is connected to a water collecting channel, which is an annular closed structure and fixed to the inner wall of the casing rotor. An annular water trough is provided on the inner side of the water collecting channel, and a water outlet hole inclined from the inside to the outside is provided at the position where the bottom surface of the annular water trough is connected to the drainage block. The bottom of the water outlet hole is connected to the bottom surface of the drainage block, and the bottom surface of the drainage block is connected to an inclined triangular water push bar. The top surface of the stator mounting seat is located directly below the bottom surface of the casing rotor and a vortex water retaining bar is fixed thereon, and the triangular water push bar is located above the vortex water retaining bar.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] In the scheme of the present application: by providing dustproof baffles inside the heat dissipation holes and ventilation holes at the bottom of the mounting seat, and allowing the limit baffles to rotate at a limited angle inside the ventilation holes and heat dissipation holes, the stator mounting seat can block the dust blown by the wing on the outside of the stator mounting seat when the stator mounting seat drives the housing to rotate and drives the wing to rotate, thereby ensuring the dustproof effect before the motor takes off. The design of the closed dustproof plate on the inner side of the top of the housing rotor and the windage transmission component can seal and close the inside of the housing rotor before the motor drives the wing to rotate for takeoff, completely preventing dust from entering the inside of the motor. At the same time, the windage transmission component can drive the windage transmission rod to rotate through the high speed of the housing rotor after the drone takes off, so that the inside of the motor can be ventilated and dissipated.

[0026] 1. The present invention has dust-proof baffles hingedly connected to the heat dissipation holes and ventilation holes opened inside the stator mounting seat, and a bottom closing plate is limitedly slidably provided below the stator mounting seat for supporting the motor and the ground. When the UAV is on the ground, the dust-proof baffles can be supported by the ground closing plate, so that the inside of the stator mounting seat is in a closed state to achieve a dust-proof function. When the UAV takes off, the motor can drive the support frame to rise, and the bottom closing plate will slide downwardly under the support frame due to its own gravity, so that the inside of the stator mounting seat is opened, so that the motor can be ventilated and dissipated during the flight of the UAV.

[0027] 2. The present invention has a closed dustproof plate hinged on the inner side of the top of the casing rotor and a wind resistance transmission member connected thereto. Before the UAV takes off, the wind resistance transmission member can use the thrust of the closed dustproof plate to form a sealed closure on the outside of the casing rotor, thereby ensuring the dustproof effect inside the closed rotor. After the UAV takes off, the casing rotor can rotate at a high speed so that the wind resistance transmission member is pushed by the wind resistance, pushing the closed dustproof plate into the casing rotor and opening the top of the casing rotor, so that the inside of the motor can be ventilated and dissipated during the flight of the UAV.

[0028] 3. The present invention provides a drainage block on the lower inner side of the wind resistance transmission part, which can comb the rainwater that passes through the high-speed rotating shell rotor and enters the barrel air dissipation port during the UAV's flight in rainy days, and allows the rainwater that hits the surface of the closed dustproof plate and falls off to enter the water collection channel and be discharged from the bottom of the drainage block. This can not only ensure the ventilation and heat dissipation inside the motor, but also prevent the rainwater that enters the motor through the ventilation and heat dissipation port from contacting the winding, which is beneficial to improving the performance and safety of the high-torque motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the overall structure of a high-torque motor for a multi-rotor UAV provided by the present invention;

[0030] Figure 2 for Figure 1 The schematic diagram of the structure of the mounting seat and the casing rotor is shown;

[0031] Figure 3 for Figure 2 A schematic cross-sectional view of the middle portion of the structure shown;

[0032] Figure 4 for Figure 2 An exploded and enlarged schematic diagram of the structure of the bottom of the mounting base is shown;

[0033] Figure 5 for Figure 4 The structural section exploded and enlarged schematic diagram of the angle limiter position shown;

[0034] Figure 6 for Figure 3 The enlarged schematic diagram of the structure of the middle section of the casing rotor shown;

[0035] Figure 7 for Figure 6 An enlarged schematic diagram of the structure of the windage transmission component shown;

[0036] Figure 8 for Figure 7 A schematic diagram of the structure of the closed dust plate position shown;

[0037] Fig. 9 for Figure 8 The structure of the windage transmission part is shown in the exploded and enlarged schematic diagram;

[0038] Fig.10 for Figure 7 A structural diagram of the location of the drainage block shown;

[0039] Fig.11 for Fig.10 The structural schematic diagram of the middle section of the drainage block shown;

[0040] Fig.12 for Fig.11 The schematic diagram of the structural breakdown and enlargement of the connection position between the drain block and the mounting base is shown.

[0041] Indicated in the figure:

[0042] 1. Support frame; 11. Combined mounting rod; 12. Fixing screw;

[0043] 2. stator mounting seat; 21. rotor assembly block; 22. heat dissipation hole; 23. assembly mounting slot; 24. ventilation hole;

[0044] 3. Winding;

[0045] 4. Dustproof baffle; 41. Angle limiter; 411. Embedded hinge slot; 412. Hinge hole; 413. Angle limiter slot; 414. Fixed hinge rod; 415. Angle limiter block; 42. Ground closing plate; 421. Limiter hole; 422. Support leg; 423. Avoidance hole;

[0046] 5. Shell rotor; 51. Ventilation and heat dissipation port; 52. Center assembly rod; 53. Wing connecting rod; 54. Permanent magnet;

[0047] 6. Close the dust plate; 61. Active hinge rod; 62. Driven slide;

[0048] 7. Wind resistance transmission member; 71. Rotating interlocking groove; 72. Limiting rod; 73. Spring spring; 74. Wind resistance transmission rod; 741. Interlocking groove; 742. Limiting groove; 743. Lifting slide groove; 744. Limiting lifting rod; 745. Limiting spherical block;

[0049] 8. Drain block; 81. Water collection channel; 82. Annular water trough; 83. Water outlet; 84. Triangular water push bar; 85. Vortex water retaining bar. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0051] As described in the background art, dust may enter the high-torque motor used to drive a multi-rotor drone when the drone takes off and lands.

[0052] In order to solve this technical problem, the present invention provides a high-torque motor for a multi-rotor UAV, which is applied to the automatic dust prevention of the high-torque motor during takeoff, and automatically opens for ventilation and heat dissipation after the UAV takes off, while allowing the high-torque motor to have a waterproof function during takeoff.

[0053] Specifically, please refer to Figure 1-Figure 12 , the high torque motor for a multi-rotor drone specifically comprises:

[0054] A support frame 1 is connected to a stator mounting seat 2 on the top surface, and a winding 3 is arranged around the center of the top of the stator mounting seat 2;

[0055] The dustproof baffle 4 inside the heat dissipation hole 22 and the ventilation hole 24 opened inside the stator mounting seat 2 is rotated at a limited angle, and the bottom surface of the stator mounting seat 2 is fitted with a ground closing plate 42, and the ground closing plate 42 is limitedly slid above the support frame 1, and the bottom end of the ground closing plate 42 is supported on the ground and is used to push the dustproof baffle 4 to close;

[0056] A sleeve rotor 5 is fitted on the outside of the stator mounting seat 2 and rotates on the inner side of the bearing at the center of the stator mounting seat 2;

[0057] A closed dustproof plate 6 is hingedly connected to the inside of the ventilation and heat dissipation opening 51 opened on the top surface of the outer side wall of the casing rotor 5;

[0058] A wind resistance transmission member 7 connected to the inner bottom surface of the ventilation and heat dissipation opening 51 and extending to both the inner and outer sides of the casing rotor 5, wherein the wind resistance transmission member 7 drives the closed dustproof plate 6 to open and close;

[0059] Drain blocks 8 are distributed in an annular shape and at equal intervals on the circumference of the inner wall of the casing rotor 5 , and the top of the drainage block 8 is located just below the bottom end of the closed dustproof plate 6 .

[0060] The present invention provides a high-torque motor for a multi-rotor unmanned aerial vehicle. By providing dustproof baffles 4 inside the heat dissipation holes 22 and the ventilation holes 24 at the bottom of the mounting seat, and allowing the limit baffles to rotate at a limiting angle inside the ventilation holes 24 and the heat dissipation holes 22, the stator mounting seat 2 can block the dust blown by the wings outside the stator mounting seat 2 when the stator mounting seat 2 drives the housing to rotate and drives the wings to rotate, thereby ensuring the dust-proof effect of the motor before take-off. The design of the closed dustproof plate 6 and the windage transmission component 7 on the inner side of the top of the housing rotor 5 can seal and close the interior of the housing rotor 5 before the motor drives the wings to rotate for take-off, completely preventing dust from entering the interior of the motor. At the same time, the windage transmission component 7 can drive the windage transmission rod 74 to rotate through the high speed of the housing rotor 5 after the unmanned aerial vehicle takes off, so that the interior of the motor can be ventilated and dissipated.

[0061] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0062] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0063] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings. Example

[0064] Please refer to Figure 1-Figure 12 A high-torque motor for a multi-rotor drone, wherein the top surface of the support frame 1 connected to the stator mounting seat 2 is vertically connected with a combined mounting rod 11, a fixing screw 12 is passed through the inner side of the combined mounting rod 11, and the other end of the fixing screw 12 is connected to the inside of the stator mounting seat 2.

[0065] A rotor assembly block 21 is provided at the center of the top surface of the stator mounting seat 2, the winding 3 is distributed in a ring shape on the circumference of the outer side surface of the rotor assembly block 21, the heat dissipation holes 22 are opened on the inner side of the rotor assembly block 21, the ventilation holes 24 and the heat dissipation holes 22 inside the stator mounting seat 2 and the rotor assembly block 21 are distributed in a ring shape with equal spacing, and a combination mounting groove 23 is opened between the heat dissipation holes 22, and one end of the fixing screw 12 away from the combination mounting rod 11 is screwed into the combination mounting groove 23.

[0066] An angle limiter 41 is provided at the position where the dustproof baffle 4 is connected to the heat dissipation hole 22 and the ventilation hole 24. The angle limiter 41 includes an embedded hinge groove 411 opened at the center of the side of the heat dissipation hole 22 and the ventilation hole 24, and hinge holes 412 are opened on both sides of the embedded hinge groove 411. Two groups of angle limiter grooves 413 distributed in a circle are opened on the inner wall of the hinge hole 412. A rotating fixed hinge rod 414 is passed through the hinge hole 412, and two groups of angle limiter blocks 415 distributed in a circle are provided on the outer walls on both sides of the middle part of the fixed hinge rod 414. The angle limiter blocks 415 rotate inside the angle limiter groove 413, and the middle part of the fixed hinge rod 414 is fixedly connected to the dustproof baffle 4.

[0067] A avoidance hole 423 is provided at the center of the ground closing plate 42, and a circular limiting hole 421 is provided around the avoidance hole 423 in an equidistant manner. The ground closing plate 42 slides on the outside of the combined mounting rod 11 through the limiting holes 421. A vertically connected support leg 422 is fixed to the circumferential position of the bottom surface of the ground closing plate 42, and the support leg 422 extends to below the bottom surface of the support frame 1.

[0068] The heat dissipation holes 22 and ventilation holes 24 opened inside the stator mounting seat 2 are hinged with dustproof baffles 4, and a bottom closing plate is limitedly slidable under the stator mounting seat 2 to support the motor and the ground. When the UAV is on the ground, the dustproof baffles 4 can be supported by the ground closing plate 42 to keep the inside of the stator mounting seat 2 in a closed state to achieve the dustproof function. When the UAV takes off, the motor can drive the support frame 1 to rise, and the bottom closing plate will slide downward under the support frame 1 due to its own gravity, allowing the inside of the stator mounting seat 2 to open, so that the motor can be ventilated and dissipated during the flight of the UAV. Example

[0069] The high torque motor for a multi-rotor drone provided in Example 1 is further optimized. Specifically, Figure 1-Figure 12 A central assembly rod 52 is connected to the inner center of the casing rotor 5, a wing connecting rod 53 is connected to the center of the top surface of the casing rotor 5, and permanent magnets 54 are fixed to the inner wall side of the casing rotor 5 in an annular and equidistant manner, and the permanent magnets 54 are located between the drainage blocks 8.

[0070] A movable hinge rod 61 is provided on the inner side of the top of the closed dustproof plate 6 , and both ends of the movable hinge rod 61 are hinged to the inner top surface of the casing rotor 5 . A driven sliding groove 62 is provided on the inner side of the bottom surface of the closed dustproof plate 6 .

[0071] The wind resistance transmission member 7 comprises a rotatable interlocking groove 71 , a limiting rod 72 is connected at the center of the rotatable interlocking groove 71 , a clockwork spring 73 is sleeved on the outer side of the bottom of the limiting rod 72 , and a rotatably connected wind resistance transmission rod 74 is sleeved on the outer side of the limiting rod 72 .

[0072] The position where the wind resistance transmission rod 74 is connected to the limiting rod 72 is provided with an insertion groove 741, and a limiting groove 742 is provided deep inside the insertion groove 741. The limiting groove 742 is limited to rotate at the top of the limiting rod 72, and the two ends of the clockwork spring 73 are respectively fixed to the outer wall of the limiting rod 72 and the inner wall of the insertion groove 741; the top of the wind resistance transmission rod 74 located inside the shell rotor 5 is provided with a lifting groove 743, and the lifting groove 743 is slidably connected to the limiting lifting rod 744, and the top of the limiting lifting rod 744 is penetrated through the outside of the wind resistance transmission rod 74, and the end of the top of the limiting lifting rod 744 located on the outside of the wind resistance transmission rod 74 is connected to a limiting spherical block 745, and the limiting lifting rod 744 is penetrated inside the driven groove 62, and the limiting spherical block 745 is limited to slide on the inner surface of the driven groove 62.

[0073] A closed dustproof plate 6 is hinged on the inner side of the top of the casing rotor 5, and a wind resistance transmission member 7 is provided to be transmission-connected thereto. Before the UAV takes off, the wind resistance transmission member 7 can be used to push the closed dustproof plate 6 to form a sealed closure on the outside of the casing rotor 5, thereby ensuring the dustproof effect inside the closed rotor. After the UAV takes off, the casing rotor 5 can rotate at a high speed, so that the wind resistance transmission member 7 is pushed by the wind resistance, and the closed dustproof plate 6 is pushed into the casing rotor 5, thereby opening the top of the casing rotor 5, so that the UAV can ventilate and dissipate heat inside the motor during flight. Example

[0074] The high torque motor for a multi-rotor drone provided in Example 1 or 2 is further optimized. Specifically, Figure 1-Figure 12 As shown, the top of the drainage block 8 is connected to a water collecting channel 81, which is in a closed annular structure and fixed to the inner wall of the casing rotor 5. An annular water trough 82 is provided on the inner side of the water collecting channel 81, and a water outlet hole 83 inclined from the inside to the outside is provided at the position where the bottom surface of the annular water trough 82 is connected to the drainage block 8, and the bottom of the water outlet hole 83 is connected to the bottom surface of the drainage block 8. The bottom surface of the drainage block 8 is connected to an inclined triangular water push bar 84, and the top surface of the stator mounting seat 2 is located directly below the bottom surface of the casing rotor 5 and is fixed with a vortex water retaining bar 85, and the triangular water push bar 84 is located above the vortex water retaining bar 85.

[0075] A drainage block 8 is provided on the lower inner side of the wind resistance transmission part 7, which can comb the rainwater that passes through the high-speed rotating shell rotor 5 and enters the barrel air dissipation port when the drone is flying in rainy days, and let the rainwater that hits the surface of the closed dustproof plate 6 and falls off enter the water collection channel 81 and be discharged from the bottom of the drainage block 8. This can not only ensure the ventilation and heat dissipation inside the motor, but also prevent the rainwater that enters the motor through the ventilation and heat dissipation port 51 from contacting the winding 3, which is beneficial to improving the performance and safety of the high-torque motor.

[0076] The use process of a high torque motor for a multi-rotor drone provided by the present invention is as follows:

[0077] When the multi-rotor drone is in take-off state, the stator mounting seat 2 and the support frame 1 are supported on the ground by the support legs 422 on the bottom surface of the bottom closing plate. When the winding 3 inside the stator mounting seat 2 is energized, it will provide magnetic force to drive the permanent magnet 54 on the inner wall of the casing rotor 5 to drive the casing rotor 5 to rotate. As the casing rotor 5 rotates, the wing connected to the outside of the wing connecting rod 53 on the top surface of the casing rotor 5 will rotate.

[0078] When the wings rotate, they will blow the air under the wings, providing buoyancy for the drone to rise. When the air blown by the wings blows up the dust on the ground, the weight of the drone itself presses against the top surface of the ground closing plate 42, and the dust baffle 4 is pressed against the top surface of the ground closing plate 42, so that the interior of the stator mounting seat 2 is in a sealed state.

[0079] When the lift provided by the drone's wings is sufficient, as the drone rises rapidly, the support frame 1 and the stator mounting seat 2 will move up. At this time, one end of the dust baffle 4 will slide under the heat dissipation holes 22 and the ventilation holes 24 due to gravity, opening the heat dissipation holes 22 and the ventilation holes 24. At this time, the bottom closing plate will slide to the bottom of the stator mounting seat 2 and fit with the top surface of the support frame 1. Due to the rapid rise of the drone, dust in the air cannot enter the stator mounting seat 2.

[0080] After the UAV rises into the air, the wind provided by the wings will be transmitted to the inside of the casing rotor 5, and the hot air inside the winding 3 and the casing rotor 5 will be discharged, thus achieving the function of ventilation and heat dissipation.

[0081] During the take-off of the UAV, when the shell rotor 5 rotates, since the position of the wind resistance transmission rod 74 connected to the rotating interlocking groove 71 is limited by the clockwork spring 73, during the take-off process of the shell rotor 5 driving the wing to rotate, the wind resistance transmission rod 74 will limit the closed dustproof plate 6 through the limiting lifting rod 744 and the limiting spherical block 745 located at one end of the shell rotor 5, so that the closed dustproof plate 6 and the ventilation and heat dissipation port 51 are in a closed and sealed state. During the take-off of the UAV, the shell rotor 5 can ensure its internal dustproof function to prevent dust from entering the UAV during take-off.

[0082] After the drone takes off, as the speed of the shell rotor 5 increases, the wind resistance on the wind resistance transmission rod 74 increases. When the wind resistance is greater than the elastic force of the clockwork spring 73, the wind resistance transmission rod 74 will rotate, so that the two ends of the wind resistance transmission rod 74 are embedded in the rotating embedding groove 71. At the same time, one end located inside the shell rotor 5 will push the closed dustproof plate 6 to rotate inward through the limiting lifting rod 744 and the limiting spherical block 745, so that the ventilation and heat dissipation port 51 is opened. After that, the wind force provided by the wing will enter the shell rotor 5 through the ventilation and heat dissipation port 51 to discharge the heat generated inside the motor.

[0083] During the landing of the drone, as the drone descends, the rotation speed of the wing gradually decreases, and the wind resistance transmission rod 74 is pushed by the elastic force of the clockwork spring 73, which will gradually drive the closed dustproof plate 6 to close the ventilation and heat dissipation port 51. At this time, the wind force transmitted by the wing to the bottom will blow the dust on the ground into the air. When the drone lands, the bottom will not enter the dust through the blocking of the ground closing plate 42, and because the opening direction of the dustproof baffle 4 is the inner opening, when the drone is landing, the ground closing plate 42 will contact the ground, pushing the dustproof baffle 4 to rotate, so that the air with dust cannot enter the heat dissipation hole 22 and the ventilation hole 24.

[0084] It should be noted that the dustproof baffle 4 is hinged to the heat dissipation hole 22 and the ventilation hole 24 through the angle limiter 41. Therefore, when the dustproof baffle 4 is opened, the opening angle of the dustproof baffle 4 is limited to 45-60 degrees. When the UAV lands, due to the tilt angle of the dustproof baffle 4, the dustproof baffle 4 is under pressure and can be directly rotated to the inside of the heat dissipation hole 22 and the ventilation hole 24, completing the closed seal inside the heat dissipation hole 22 and the ventilation hole 24.

[0085] When it rains during the flight of the drone, the shell rotor 5 itself rotates at high speed and can block the rain on the outside. The rain that enters the shell rotor 5 through the ventilation and heat dissipation port 51 on the top of the shell rotor 5 will hit the surface of the closed dustproof plate 6. As the shell rotor 5 rotates at high speed, the rain attached to the surface of the closed dustproof plate 6 will be thrown off the shell rotor 5 or the bottom of the closed dustproof plate 6, and a small amount of rain enters the water collection channel 81. As the water collection channel 81 rotates, the rainwater will flow to the ground of the drainage block 8 through the inclined water outlet 83.

[0086] Rainwater flowing to the ground of the drainage block 8 will be thrown to the outside of the stator mounting seat 2 or on the surface of the vortex water retaining strip 85 by the high-speed centrifugal force of the casing rotor 5. At this time, when the casing rotor 5 rotates at a high speed, the triangular water pushing strip 84 connected to the bottom surface of the drainage block 8 will push the external air through the inclined surface of the bottom surface, so that the air on the bottom surface of the drainage block 8 is pushed toward the outside of the casing rotor 5. At this time, the rainwater falling inside the vortex water retaining strip 85 is sent to the outside of the stator mounting seat 2 by the air provided by the triangular water pushing strip 84, thereby realizing the waterproof and dustproof of the stator mounting seat 2 and the inside of the casing rotor 5.

[0087] The coordinated use of the dust-proof baffle 4 and the closed dust-proof plate 6 in the present invention can make the motor as a whole have a good dust-proof effect. At the same time, after the UAV takes off, the inside of the motor can also have a ventilation and heat dissipation function. The design of the closed dust-proof plate 6 can also seal the bottom of the stator mounting seat 2 to prevent the internal air of the shell rotor 5 from flowing to the outside, thereby improving the dust-proof effect of the closed dust-proof plate 6. The combination of the closed dust-proof plate 6 and the dust-proof baffle 4 can have a dust-proof function before the UAV takes off, and can be connected to the outside after take-off to achieve ventilation and heat dissipation inside the motor.

[0088] It should be noted that when the UAV is flying in the air, the rotation speed of the shell rotor 5 will be much greater than the rotation speed when it is on the ground, and the elastic force of the clockwork spring 73 inside the wind resistance transmission member 7 can only limit the wind resistance transmission rod 74 when the shell rotor 5 is on the ground. When the speed of the shell rotor 5 increases when the UAV takes off, the wind resistance transmission rod 74 will apply thrust to the clockwork spring 73, allowing the wind resistance transmission rod 74 to be embedded in the rotating interlocking groove 71, which can not only reduce the resistance exerted by the wind resistance transmission rod 74 on the shell rotor 5, but also drive the closed dustproof plate 6 to open.

[0089] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A high torque motor for a multi-rotor drone, characterized in that: include: A support frame (1) is connected to a stator mounting seat (2) on its top surface, and a winding (3) is arranged circumferentially at the center of the top of the stator mounting seat (2); The dustproof baffle (4) inside the heat dissipation hole (22) and the ventilation hole (24) opened inside the stator mounting seat (2) is rotated at a limited angle, the bottom surface of the stator mounting seat (2) is fitted with a ground closing plate (42), the ground closing plate (42) is limitedly slid above the support frame (1), the bottom end of the ground closing plate (42) is supported on the ground, and the top surface of the ground closing plate (42) is used to push the dustproof baffle (4) to close; A sleeve rotor (5) which is sleeved on the outside of the stator mounting seat (2) and rotates on a bearing at the center of the stator mounting seat (2); A closed dustproof plate (6) hingedly connected to the inside of a ventilation and heat dissipation opening (51) provided on the top surface of the outer wall of the casing rotor (5); A wind resistance transmission member (7) connected to the inner bottom surface of the ventilation and heat dissipation opening (51) and extending to both inner and outer sides of the casing rotor (5), wherein the wind resistance transmission member (7) drives the closed dustproof plate (6) to open and close; Drain blocks (8) are distributed in an annular shape and at equal intervals on the circumference of the inner wall of the casing rotor (5), and the top of the drain block (8) is located directly below the bottom end of the closed dustproof plate (6); A central assembly rod (52) is connected to the center of the inner part of the casing rotor (5), a wing connecting rod (53) is connected to the center of the top surface of the casing rotor (5), and permanent magnets (54) are fixed to the inner wall side of the casing rotor (5) and are evenly distributed in an annular manner. The permanent magnets (54) are located between the drainage blocks (8); When the winding (3) inside the stator mounting seat (2) is energized, it provides magnetic force to drive the permanent magnet (54) on the inner wall of the casing rotor (5) to drive the casing rotor (5) to rotate. As the casing rotor (5) rotates, the wing connected to the outer side of the wing connecting rod (53) on the top surface of the casing rotor (5) rotates.

2. A high torque motor for a multi-rotor drone according to claim 1, characterized in that: A combined mounting rod (11) is vertically connected to the top surface of the position where the support frame (1) is connected to the stator mounting seat (2), a fixing screw (12) is passed through the inner side of the combined mounting rod (11), and one end of the fixing screw (12) is connected to the inside of the stator mounting seat (2).

3. A high torque motor for a multi-rotor UAV according to claim 2, characterized in that: A rotor assembly block (21) is provided at the center of the top surface of the stator mounting seat (2), the winding (3) is distributed in an annular shape on the circumference of the outer side surface of the rotor assembly block (21), the heat dissipation holes (22) are provided on the inner side of the rotor assembly block (21), the ventilation holes (24) and heat dissipation holes (22) inside the stator mounting seat (2) and the rotor assembly block (21) are distributed in an annular shape at equal intervals, a combination mounting groove (23) is provided between the heat dissipation holes (22), and one end of the fixing screw (12) away from the combination mounting rod (11) is screwed into the combination mounting groove (23).

4. A high torque motor for a multi-rotor UAV according to claim 3, characterized in that: An angle limiter (41) is provided at a position where the dustproof baffle (4) is connected to the heat dissipation hole (22) and the ventilation hole (24); the angle limiter (41) comprises an embedded hinge groove (411) provided at the center of the side of the heat dissipation hole (22) and the ventilation hole (24); hinge holes (412) are provided on both sides of the embedded hinge groove (411); two groups of angle limiter grooves (413) distributed circumferentially are provided on the inner side wall of the hinge hole (412); a rotatable fixed hinge rod (414) is passed through the hinge hole (412); two groups of angle limiter blocks (415) distributed circumferentially are provided on the outer walls of both sides of the middle part of the fixed hinge rod (414); the angle limiter blocks (415) are rotated inside the angle limiter grooves (413); the middle part of the fixed hinge rod (414) is fixedly connected to the dustproof baffle (4).

5. The high torque motor for a multi-rotor UAV according to claim 1, characterized in that: The center of the ground closing plate (42) is provided with an avoidance hole (423), and the circumference of the avoidance hole (423) is provided with annular limiting holes (421) distributed at equal intervals. The ground closing plate (42) is limitedly slid on the outside of the combined mounting rod (11) through the limiting holes (421), and a vertically connected support leg (422) is fixed at a circumferential position of the bottom surface of the ground closing plate (42), and the support leg (422) extends to below the bottom surface of the support frame (1).

6. The high torque motor for a multi-rotor UAV according to claim 1, characterized in that: A movable hinge rod (61) is provided on the inner side of the top of the closed dustproof plate (6), and both ends of the movable hinge rod (61) are hinged to the inner top surface of the casing rotor (5). A driven sliding groove (62) is provided on the inner side of the bottom surface of the closed dustproof plate (6).

7. A high torque motor for a multi-rotor UAV according to claim 6, characterized in that: The wind resistance transmission member (7) comprises a rotatable interlocking groove (71), a limiting rod (72) is connected at the center of the rotatable interlocking groove (71), a spring spring (73) is sleeved on the outer side of the bottom of the limiting rod (72), and a rotatably connected wind resistance transmission rod (74) is sleeved on the outer side of the limiting rod (72).

8. The high torque motor for a multi-rotor UAV according to claim 7, characterized in that: The position where the wind resistance transmission rod (74) is connected to the limiting rod (72) is provided with an insertion groove (741), and a limiting groove (742) is provided deep inside the insertion groove (741). The limiting groove (742) is limitedly rotated at the top of the limiting rod (72), and the two ends of the spring spring (73) are respectively fixed to the outer wall of the limiting rod (72) and the inner wall of the insertion groove (741). The top of one end of the wind resistance transmission rod (74) located inside the casing rotor (5) is provided with a lifting slide groove (741). 43), the lifting groove (743) is internally slidably connected to a limit lifting rod (744), the top of the limit lifting rod (744) is arranged on the outside of the wind resistance transmission rod (74), the top of the limit lifting rod (744) located on the outside of the wind resistance transmission rod (74) is connected to a limit spherical block (745), the limit lifting rod (744) is arranged inside the driven groove (62), and the limit spherical block (745) is limitedly slid on the inner surface of the driven groove (62).

9. The high torque motor for a multi-rotor UAV according to claim 1, characterized in that: The top of the drainage block (8) is connected to a water collecting channel (81), the water collecting channel (81) is an annular closed structure and is fixed to the inner wall of the casing rotor (5), an annular water groove (82) is provided inside the water collecting channel (81), a water outlet hole (83) inclined from the inside to the outside is provided at the position where the inner bottom surface of the annular water groove (82) is connected to the drainage block (8), the bottom of the water outlet hole (83) is connected to the bottom surface of the drainage block (8), the bottom surface of the drainage block (8) is connected to an inclined triangular water push bar (84), the top surface of the stator mounting seat (2) is located directly below the bottom surface of the casing rotor (5) and is fixed with a vortex water retaining bar (85), and the triangular water push bar (84) is located above the vortex water retaining bar (85).

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