Hollow cup motor unmanned aerial vehicle

Abstract

The utility model relates to the related technical field of unmanned aerial vehicles, in particular to a coreless motor unmanned aerial vehicle which comprises a vehicle body, a vehicle arm is fixedly connected to the surface of one side of the vehicle body, a shell is fixedly connected to the surface of one side of the vehicle arm, a power mechanism is arranged on the surface of the inner side of the shell, and a three-blade propeller is arranged on the surface of the upper portion of the power mechanism. According to the coreless motor unmanned aerial vehicle, the damping mechanism is arranged, the end points of the bottom frame are designed to be arc-shaped, when the coreless motor unmanned aerial vehicle makes contact with the ground, impact force is dispersed through a curved surface, plane friction is replaced with rolling contact, vibration energy loss is reduced, the risk of loosening of parts is reduced, and the equipment stability is improved; the unmanned aerial vehicle has an excellent buffering effect on high-frequency and sudden vibration, can be suitable for landing in various complex terrains, expands the use scene of the unmanned aerial vehicle, reduces the equipment fault occurrence rate, and guarantees the safety and reliability of task execution of the unmanned aerial vehicle.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a UAV with a hollow cup motor. Background Technology

[0002] In the field of drone technology, the performance of the power system directly determines the drone's flight efficiency, endurance, and operational flexibility. Coreless motors, with their significant advantages of small size, light weight, fast response, and high energy conversion efficiency, have become an ideal choice for drone power configurations. Compared to traditional motors, coreless motors can achieve faster start-up and braking, allowing drones to flexibly adjust their flight attitude in complex environments. Their low energy consumption extends the drone's endurance, ensuring long-term operational needs. Furthermore, their lightweight design reduces the overall load and enhances the drone's payload capacity. Therefore, a coreless motor-powered drone is particularly needed.

[0003] However, most existing drones rely on simple supports or thin cushioning pads during landing, lacking effective shock absorption devices. This makes the drone fuselage highly susceptible to damage from impact during hard landings or landings on complex terrain, which not only shortens the equipment's lifespan but may also lead to data loss or even flight accidents. Meanwhile, in terms of the power system, traditional motors generally suffer from slow start-up response, high energy consumption, and unstable output torque due to structural limitations. When faced with high-difficulty maneuvers, they are unable to provide instantaneous power support. During continuous flight, high energy consumption exacerbates power consumption, severely limiting the flight range. Furthermore, torque fluctuations can lead to inaccurate flight attitude control, failing to meet the requirements of high-precision operations. Utility Model Content

[0004] The purpose of this invention is to provide a hollow cup motor drone to solve the problems mentioned in the background art. In most existing hollow cup motor drones, during landing, only a simple support or a thin buffer pad is used, lacking an effective shock absorption device. This makes the drone's fuselage easily damaged by impact during hard landings or landings on complex terrain, not only shortening the equipment's lifespan but also potentially causing data loss or even flight accidents. Meanwhile, in terms of the power system, traditional motors, due to structural limitations, generally suffer from slow start-up response, high energy consumption, and unstable output torque. They struggle to provide instantaneous power support when facing high-difficulty maneuvers; during continuous flight, high energy consumption exacerbates battery drain, severely limiting range; and torque fluctuations can lead to inaccurate flight attitude control, failing to meet the requirements of high-precision operations.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hollow cup motor drone, comprising a fuselage, an arm fixedly connected to one side surface of the fuselage, a shell fixedly connected to one side surface of the arm, a power mechanism disposed on the inner surface of the shell, a three-bladed propeller disposed on the upper surface of the power mechanism, a camera device fixedly connected to the upper surface of the fuselage, a lens fixedly connected to the inner surface of the camera device, a handpiece fixedly connected to one side surface of the fuselage, and a shock-absorbing mechanism disposed on the lower surface of the handpiece;

[0006] The shock absorption mechanism includes a buffer plate, which is fixed to one side surface of the connecting plate. A cross bracket is fixedly connected to one side surface of the buffer plate, and a fixing member is fixedly connected to one side surface of the cross bracket. A circular groove is formed on one side surface of the fixing member, and a sliding rod is slidably connected to the inner surface of the circular groove. A base plate is fixedly connected to one side surface of the sliding rod, and a base frame is fixedly connected to one side surface of the base plate. A buffer spring is slidably connected to the outer side of the sliding rod, and a connecting plate is fixedly connected to one side surface of the base frame.

[0007] Preferably, the arm, housing, power mechanism and three-bladed propeller are provided in four identical sizes and are symmetrically distributed around the fuselage, and the camera device and lens are distributed parallel to the fuselage.

[0008] Preferably, the horizontal support and the fixing member are provided in two identical sizes and are symmetrically distributed along the side of the buffer plate away from the connecting plate. The vertical horizontal center line of the fixing member intersects the horizontal horizontal center line of the buffer plate perpendicularly.

[0009] Preferably, four slide bars of the same size are provided, and the outer wall size of the slide bars matches the inner wall size of the circular groove. Four buffer springs of the same size are provided and are distributed parallel to the base plate.

[0010] Preferably, the base frame has two of the same size and is symmetrically distributed along the side of the buffer plate away from the connecting plate. The vertical center line of the base frame intersects the horizontal center line of the connecting plate perpendicularly, and the two ends of the base frame are arc-shaped.

[0011] Preferably, the power mechanism includes a cover plate, a brush holder slidably connected to the lower surface of the cover plate, a hollow cup rotor fixedly connected to one side surface of the brush holder, a circular gasket slidably connected to one side surface of the hollow cup rotor, a neodymium iron boron magnet slidably connected to the inner surface of the hollow cup rotor, a stator slidably connected to one side surface of the neodymium iron boron magnet, and a sliding bearing rotatably connected to one side surface of the stator.

[0012] Preferably, the inner wall dimensions of the stator match the outer wall dimensions of the neodymium iron boron magnet, and the outer wall dimensions of the cover plate match the inner dimensions of the brush holder.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This hollow cup motor drone, through the setting of the shock absorption mechanism, adopts an arc-shaped design at the end of the base frame. When it contacts the ground, the impact force is dispersed by the curved surface, and the rolling contact replaces the planar friction, reducing vibration energy loss, reducing the risk of loose parts, and improving equipment stability. The sliding rod and the circular groove cooperate with the buffer spring to form a multi-level shock absorption system, which has excellent buffering effect on high frequency and sudden vibration. It can adapt to landing in various complex terrains, expand the application scenarios of drones, reduce the equipment failure rate, and ensure the safety and reliability of drone mission execution. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the bottom view structure of this utility model;

[0016] Figure 3 This is a side view structural diagram of the present invention;

[0017] Figure 4 This is a schematic diagram showing the disassembled power mechanism of this utility model;

[0018] Figure 5 This is a schematic diagram of the overall disassembled structure of the shock absorption mechanism of this utility model.

[0019] In the diagram: 1. Fuselage; 2. Arm; 3. Outer shell; 4. Power mechanism; 401. Cover plate; 402. Brush holder; 403. Hollow cup rotor; 404. Circular gasket; 405. Neodymium iron boron magnet; 406. Stator; 407. Sliding bearing; 5. Three-bladed propeller; 6. Camera device; 7. Lens; 8. Hand plate; 9. Shock absorption mechanism; 901. Buffer plate; 902. Cross support; 903. Fixing component; 904. Circular groove; 905. Slide rod; 906. Film; 907. Buffer spring; 908. Base frame; 909. Connecting plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5This utility model provides a technical solution: a hollow cup motor drone, including a fuselage 1, an arm 2 fixedly connected to one side surface of the fuselage 1, a shell 3 fixedly connected to one side surface of the arm 2, a power mechanism 4 provided on the inner surface of the shell 3, a three-bladed propeller 5 provided on the upper surface of the power mechanism 4, a camera device 6 fixedly connected to the upper surface of the fuselage 1, a lens 7 fixedly connected to the inner surface of the camera device 6, a handpiece 8 fixedly connected to one side surface of the fuselage 1, and a shock absorption mechanism 9 provided on the lower surface of the handpiece 8;

[0022] The shock absorption mechanism 9 includes a buffer plate 901, which is fixed to one side surface of the connecting plate 8. A horizontal support 902 is fixedly connected to one side surface of the buffer plate 901, and a fixing member 903 is fixedly connected to one side surface of the horizontal support 902. A circular groove 904 is formed on one side surface of the fixing member 903. A slide rod 905 is slidably connected to the inner surface of the circular groove 904. A base plate 906 is fixedly connected to one side surface of the slide rod 905, and a base frame 908 is fixedly connected to one side surface of the base plate 906. A buffer spring 907 is slidably connected to the outer side of the slide rod 905, and a connecting plate 909 is fixedly connected to one side surface of the base frame 908. The shock absorption mechanism 9 comprises the buffer plate 901, the horizontal support 902, the fixing member 903, the circular groove 904, the slide rod 905, the base plate 906, the buffer spring 907, and the base frame 908. The design of the base frame 908 and connecting plate 909 allows the base frame 908 and connecting plate 909 to first contact the ground and absorb some of the vibration during use. The arc-shaped design of the end point of the base frame 908 effectively reduces frictional vibration with the ground. At the same time, the base frame 908 and connecting plate 909 transmit the vibration through the base plate 906 to the slide bar 905. The slide bar 905 will drive the base plate 906 to slide along the circular groove 904, while compressing the buffer spring 907 to produce elastic deformation, converting the impact force into elastic potential energy. Meanwhile, the rigid frame formed by the cross bracket 902 and the fixing part 903 provides stable guidance for the sliding of the slide bar 905 and prevents deviation. The buffer plate 901 further absorbs residual vibration, which can better adapt to the landing requirements of various complex terrains such as grass and cement, and greatly broaden the application scenarios of the drone.

[0023] Furthermore, the four arms 2, the outer shell 3, the power mechanism 4, and the three-bladed propeller 5 are of the same size and are symmetrically distributed around the fuselage 1. The camera device 6 and the lens 7 are distributed parallel to the fuselage 1. Through the arrangement of the arms 2, the outer shell 3, the power mechanism 4, and the three-bladed propeller 5, in use, the power mechanism 4 inside the outer shell 3 provides power to drive the three-bladed propeller 5 to rotate and generate lift, so that the drone can take off smoothly. At the same time, the four arms 2 evenly distribute the power to various parts of the fuselage 1 to ensure stable flight attitude. Compared with asymmetrical aircraft, this can effectively reduce flight attitude imbalance caused by uneven power.

[0024] Furthermore, two horizontal supports 902 and two fixing members 903 of the same size are provided and are symmetrically distributed along the side of the buffer plate 901 away from the connecting plate 8. The vertical center line of the fixing member 903 intersects the horizontal center line of the buffer plate 901 perpendicularly. Through the arrangement of the buffer plate 901, the horizontal supports 902 and the fixing members 903, the horizontal supports 902, the fixing members 903 and the buffer plate 901 play a role in fixing the components below during use. The symmetrical layout design can effectively reduce the deformation or breakage of components caused by uneven force.

[0025] Furthermore, four slide bars 905 of the same size are provided, and the outer wall size of the slide bar 905 matches the inner wall size of the circular groove 904. Four buffer springs 907 of the same size are provided and are distributed parallel to the base plate 906. Through the arrangement of slide bars 905, buffer springs 907 and circular groove 904, during use, the base frame 908 and connecting plate 909 transmit the vibration to the slide bar 905 through the base plate 906. The slide bar 905 will drive the base plate 906 to slide along the circular groove 904, while compressing the buffer spring 907 to produce elastic deformation, converting the impact force into elastic potential energy, effectively reducing the impact of vibration on the precision components inside the body 1.

[0026] Furthermore, the base frame 908 has two of the same size, and is symmetrically distributed along the side of the buffer plate 901 away from the connecting plate 8. The vertical horizontal center line of the base frame 908 intersects the horizontal center line of the connecting plate 909 perpendicularly. The two ends of the base frame 908 are arc-shaped. With the base frame 908, when in use, the arc-shaped design of the end points of the base frame 908 disperses the impact force with a curved surface when in contact with the ground, and the rolling contact replaces the planar friction, reducing vibration and reducing the risk of loosening of the parts of the machine body 1.

[0027] Furthermore, the power mechanism 4 includes a cover plate 401, a brush holder 402 slidably connected to the lower surface of the cover plate 401, a hollow cup rotor 403 fixedly connected to one side surface of the brush holder 402, a circular pad 404 slidably connected to one side surface of the hollow cup rotor 403, a neodymium iron boron magnet 405 slidably connected to the inner surface of the hollow cup rotor 403, a stator 406 slidably connected to one side surface of the neodymium iron boron magnet 405, and a sliding bearing 407 rotatably connected to one side surface of the stator 406. Through the arrangement of the cover plate 401, brush holder 402, hollow cup rotor 403, circular pad 404, neodymium iron boron magnet 405, stator 406, and sliding bearing 407, during use, the cover plate 401 ensures that the brush holder 402 can slide smoothly beneath it. After the brush holder 402 is energized, the current is transmitted to the hollow cup rotor 403 through the brushes. The gasket 404 is located on one side of the hollow cup rotor 403, serving to reduce friction and buffer, ensuring that the hollow cup rotor 403 can slide and rotate smoothly. The neodymium iron boron magnet 405 inside the hollow cup rotor 403 provides a strong and stable magnetic field. When the energized hollow cup rotor 403 is in the magnetic field of the neodymium iron boron magnet 405, it generates a rotational torque. The stator 406, as the stationary part of the power mechanism 4, provides support and a stable magnetic field environment for the entire power system. The neodymium iron boron magnet 405 and the stator 406 cooperate with each other to ensure that the hollow cup rotor 403 can rotate efficiently within it. The sliding bearing 407 is installed on one side of the stator 406, allowing the hollow cup rotor 403 to rotate relative to the stator 406. The sliding bearing 407 can reduce the frictional resistance during rotation, which is equivalent to the transmission motor having the advantages of slow power consumption and long driving range.

[0028] Furthermore, the inner wall dimensions of the stator 406 match the outer wall dimensions of the neodymium iron boron magnet 405, and the outer wall dimensions of the cover plate 401 match the inner dimensions of the brush holder 402. Through the arrangement of the stator 406 and the neodymium iron boron magnet 405, during use, the neodymium iron boron magnet 405 and the stator 406 cooperate with each other to form a stable magnetic field distribution, ensuring that the hollow cup rotor 403 can rotate efficiently within it. This precise cooperation can also reduce hysteresis loss and eddy current loss, improve energy utilization efficiency, and extend the service life of the magnet and the stator.

[0029] Working Principle: Power is provided by the power mechanism 4. First, the power supply supplies power to the brush holder 402. The cover plate 401 protects the brush holder 402 and ensures that the brush holder 402 can slide smoothly underneath it, maintaining good electrical contact. After the brush holder 402 is energized, the current is transmitted to the hollow cup rotor 403 through the brushes. The hollow cup rotor 403 adopts a unique hollow cup structure, which makes the rotor's moment of inertia extremely small, enabling it to respond quickly to changes in current. The circular pad 404 is on one side of the hollow cup rotor 403, which reduces friction and buffers the rotation, ensuring that the hollow cup rotor 403 can slide and rotate smoothly. The neodymium iron boron magnets 405 inside the hollow cup rotor 403 provide a strong and stable magnetic field. When the energized hollow cup rotor 403 is in the magnetic field of the neodymium iron boron magnets 405, according to the law of electromagnetic induction, the rotor will be subjected to an Ampere force, thereby generating a rotational torque. The stator 406, as the stationary part of the power mechanism 4, provides support and a stable magnetic field environment for the entire power system. The neodymium iron boron magnets 405 and the stator 406 cooperate with each other to form a stable magnetic field distribution, ensuring that the hollow cup rotor 403 can rotate efficiently within it. The sliding bearing 407 is installed on one side of the stator 406, allowing the hollow cup rotor 403 to rotate relative to the stator 406. The rotating sliding bearing 407 reduces frictional resistance during rotation, lowers energy loss, and ultimately drives the three-bladed propeller 5 to rotate at high speed, generating lift for a smooth takeoff. The four arms 2 evenly distribute power to various parts of the fuselage 1, ensuring stable flight attitude. During mission execution, the lens 7 of the camera device 6 can perform high-definition shooting or dynamic monitoring of the target area according to a preset program or remote command. When the drone lands, the shock absorption mechanism 9 takes effect. The base frame 908 and connecting plate 909 first contact the ground to absorb some vibration. The arc-shaped design of the end of the base frame 908 effectively reduces frictional vibration with the ground. At the same time, the base frame 908 and connecting plate 909... Vibration is transmitted to slide bar 905 through base plate 906. Slide bar 905 drives base plate 906 to slide along circular groove 904, while compressing buffer spring 907 to produce elastic deformation, converting impact force into elastic potential energy. At the same time, the rigid frame formed by cross bracket 902 and fixing member 903 provides stable guidance for the sliding of slide bar 905 and prevents deviation. Buffer plate 901 further absorbs residual vibration, ultimately attenuating the impact energy step by step, preventing vibration from being transmitted to fuselage 1, effectively protecting the delicate electronic components and camera device 6 inside the drone, and ensuring its safe and stable landing. This completes the usage process of a hollow cup motor drone.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hollow cup motor unmanned aerial vehicle, comprising a fuselage (1), characterized in that: An arm (2) is fixedly connected to one side surface of the fuselage (1), a shell (3) is fixedly connected to one side surface of the arm (2), a power mechanism (4) is provided on the inner surface of the shell (3), a three-bladed propeller (5) is provided on the upper surface of the power mechanism (4), a camera device (6) is fixedly connected to the upper surface of the fuselage (1), a lens (7) is fixedly connected to the inner surface of the camera device (6), a handpiece (8) is fixedly connected to one side surface of the fuselage (1), and a shock-absorbing mechanism (9) is provided on the lower surface of the handpiece (8). The shock absorption mechanism (9) includes a buffer plate (901), which is fixed to one side surface of the connecting plate (8). A cross bracket (902) is fixedly connected to one side surface of the buffer plate (901), and a fixing member (903) is fixedly connected to one side surface of the cross bracket (902). A circular groove (904) is provided on one side surface of the fixing member (903). A slide rod (905) is slidably connected to the inner surface of the circular groove (904). A base plate (906) is fixedly connected to one side surface of the slide rod (905). A base frame (908) is fixedly connected to one side surface of the base plate (906). A buffer spring (907) is slidably connected to the outer side of the slide rod (905). A connecting plate (909) is fixedly connected to one side surface of the base frame (908).

2. The hollow cup motor drone according to claim 1, characterized in that: The arm (2), the outer shell (3), the power mechanism (4) and the three-bladed propeller (5) are provided with four of the same size and are symmetrically distributed around the fuselage (1). The camera device (6) and the lens (7) are distributed parallel to the fuselage (1).

3. The hollow cup motor drone according to claim 1, characterized in that: Two of the horizontal support (902) and the fixing member (903) are provided, and are symmetrically distributed along the side of the buffer plate (901) away from the connecting plate (8). The vertical horizontal center line of the fixing member (903) intersects the horizontal horizontal center line of the buffer plate (901) perpendicularly.

4. The hollow cup motor drone according to claim 1, characterized in that: The slide bar (905) has four of the same size, and the outer wall size of the slide bar (905) matches the inner wall size of the circular groove (904). The buffer spring (907) has four of the same size and is distributed parallel to the base plate (906).

5. A hollow cup motor drone according to claim 1, characterized in that: The base frame (908) has two of the same size and is symmetrically distributed along the side of the buffer plate (901) away from the connecting plate (8). The vertical horizontal center line of the base frame (908) intersects the horizontal center line of the connecting plate (909) perpendicularly. The two ends of the base frame (908) are arc-shaped.

6. A hollow cup motor drone according to claim 1, characterized in that: The power mechanism (4) includes a cover plate (401), a brush holder (402) is slidably connected to the lower surface of the cover plate (401), a hollow cup rotor (403) is fixedly connected to one side surface of the brush holder (402), a circular pad (404) is slidably connected to one side surface of the hollow cup rotor (403), a neodymium iron boron magnet (405) is slidably connected to the inner surface of the hollow cup rotor (403), a stator (406) is slidably connected to one side surface of the neodymium iron boron magnet (405), and a sliding bearing (407) is rotatably connected to one side surface of the stator (406).

7. A hollow cup motor drone according to claim 6, characterized in that: The inner wall dimensions of the stator (406) match the outer wall dimensions of the neodymium iron boron magnet (405), and the outer wall dimensions of the cover plate (401) match the inner dimensions of the brush holder (402).

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