Unmanned aerial vehicle arm, unmanned aerial vehicle frame and mooring unmanned aerial vehicle

Abstract

The invention provides an unmanned aerial vehicle arm, a machine frame and a mooring unmanned aerial vehicle. At least one side of the unmanned aerial vehicle arm is provided with a plurality of fins, and at least one side of the unmanned aerial vehicle arm is provided with a lighting device. The lighting device comprises a lamp panel and a lampshade, and the lampshade and the vehicle arm define a closed space used for installing the lamp panel. The lamp panel is installed close to the fins, and the lamp panel and the fins form a heat conduction channel. The area, at least located between the lamp panel and the fins, of the vehicle arm is made of a good thermal conductor material. The fins are used for enhancing heat dissipation. By means of the arrangement, air flow generated by the propellers of the unmanned aerial vehicle can be ingeniously used for active heat dissipation, the heat dissipation effect is enhanced, meanwhile, landing of the unmanned aerial vehicle cannot be affected, the supporting foot frame of the unmanned aerial vehicle does not need to be additionally heightened, and heating of the lighting device does not affect other electronic equipment in the unmanned aerial vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to an UAV arm, a frame, and a tethered UAV. Background Art

[0002] Outdoor drone lighting or rescue drone lighting usually involves adding a lighting device to the bottom of the drone. The lighting device is powered by the drone battery. This method has the following main disadvantages: (1) Since drone lighting usually requires high-lumen lamps with high power, and the lighting device is hung on the bottom of the drone, its heat dissipation can only rely on passive heat dissipation (such as heat dissipation holes and natural convection), which is inefficient under high-load conditions and easily leads to device performance degradation and cannot be used for a long time (usually when the drone's flight time ends, the lighting ends, and the battery is reassembled after heat dissipation and then used again). It is easy to be damaged after long-term use. If a fan is added for active cooling, the power consumption will be higher, further shortening the drone's flight time. (2) The lamp is integrated with a high-power electric adjustment board and a light-emitting device, which is easy to generate a lot of heat accumulation during operation. If the lamp is installed on the bottom of the drone, the high heat can easily damage the electronic components inside the drone. (3) Installing the lamp on the bottom of the drone can easily hinder the drone's takeoff and landing, and if the bottom legs of the drone are raised, it can easily hinder the lighting. (4) Due to the limitations of battery weight and power, drones cannot operate continuously for long periods of time. High-lumen lighting fixtures used for outdoor or rescue operations have high power, which will greatly reduce the drone's endurance. Summary of the Invention

[0003] Based on the above, a high-lumen lighting drone arm, a frame, and a tethered drone that can be used outdoors or for rescue are provided.

[0004] A drone arm, wherein at least one side of the arm is provided with a plurality of fins and at least one side is provided with a lighting device; the lighting device includes a light board and a lampshade, the lampshade and the arm enclosing a closed space for mounting the light board; the light board is mounted close to the fins and forms a heat conduction channel with the fins; at least the area on the arm located between the light board and the fins is made of a good thermal conductor material; the fins are used to enhance heat dissipation.

[0005] In one embodiment, the arm is a hollow structure, and several of the fins are arranged on the upper surface of the upper side wall of the arm; a long hole is opened in the lower side wall of the arm, and the lighting device is installed in the arm through the long hole, and the light board is installed in contact with the inner side of the upper side wall of the arm; or, the arm adopts a U-profile, the light board is installed at the bottom of the U-profile, the lampshade is sealed and connected to the opening of the U-profile, and the fins are arranged on the outer side of the U-profile.

[0006] In one embodiment, a long slot is provided on the lower side of the arm, and the lighting device is installed in the long slot.

[0007] In one embodiment, the lamp board is installed at the bottom of the long slot, and the lamp cover is sealed and connected to the opening of the long slot.

[0008] In one embodiment, the fin is arranged below the rotating surface of the drone wing blade.

[0009] In one embodiment, thermally conductive silicone is placed between the light panel and the mounting surface. The back of the light panel is a wavy heat dissipation surface, connected to the main body of the arm via a thermally conductive silicone filling surface. This reduces the increase in thermal resistance caused by the mounting gap. In this embodiment, the thickness of the thermally conductive silicone is preferably 1mm.

[0010] In one embodiment, a mounting groove is provided on the arm at the mounting location of the light board, for filling with thermal conductive silica gel, or for mounting the light board as a whole in the mounting groove.

[0011] In one embodiment, the arm body is provided with a heat dissipation enhancement area, the light board and the fins are both provided in the heat dissipation enhancement area, and the inner wall of the heat dissipation enhancement area is laminated with a graphene thermal conductive film.

[0012] In one embodiment, the plurality of fins are arranged to change from dense to combed from the middle to the two ends. That is, the spacing between the plurality of fins first decreases from large to small and then increases from small to large in the direction from the end to the root of the arm.

[0013] In one embodiment, the fins are designed to be circular in the lateral direction of the arm, and several of the fins are arranged in concentric circles to increase the heat dissipation area and improve the amount of airflow. In this embodiment, the more airflow passing through the fins per unit time, the more heat can be removed. Because the airflow generated by the propeller is in a spiral state, the fins are designed to rotate in concentric circles. This allows more air to flow through the heat dissipation channels between the fins and better matches the flow direction of the airflow, thereby enhancing the heat dissipation effect. At the same time, the concentric circle design also indirectly increases the heat dissipation area, further enhancing heat dissipation from the hardware foundation.

[0014] In one embodiment, the centers of the plurality of fins are located on the rotation centerline of the drone wing.

[0015] In one embodiment, the width or length of the fin is set to decrease from large to small from the root to the top. That is, the width of the root of the fin is greater than the width of the top, for example, the fin is trapezoidal, semicircular, etc. as a whole. In this embodiment, the conduction of heat in the arm and the fin follows the "gradient attenuation" law. The temperature is highest near the arm (the source of heat), and the farther away from the arm, the lower the temperature (the heat is gradually carried away by the airflow). Therefore, the heat dissipation surface of the fin is designed differently. This design allows the "heat dissipation capacity" of the fin to fully match the "heat distribution", which not only ensures the heat dissipation efficiency in the high temperature zone, but also avoids redundant design in the low temperature zone, adapts to the trend of lowering temperature, avoids material waste, and reduces resistance to airflow (the smaller the size, the smoother the airflow).

[0016] In one embodiment, the thickness of the fin decreases from the root to the top.

[0017] In one embodiment, the free end, i.e., the top end, of the fin is further designed with a guide body, and the guide body is used to reduce the vortex generated by the flowing air at the top end of the fin, thereby reducing the noise generated by the fin.

[0018] In one embodiment, the side walls of the fins are further provided with guide ribs for combing the air flowing through the fins, thereby enhancing heat dissipation and reducing noise.

[0019] In one embodiment, a plurality of grooves are provided on the outer surface of the arm at the root of the fins to increase the heat dissipation area, reduce the weight of the arm and increase the rigidity of the arm.

[0020] In one embodiment, the fins are distributed in a concentric spiral shape along the outer wall of the heat dissipation enhancement area of ​​the arm, matching the direction of the spiral airflow generated by the rotor.

[0021] In one embodiment, a motor mounting seat is provided at the end of the arm for installing a propeller motor; an axial hole is provided at the root of the arm, and the axial hole is used to install a folding shaft assembly or a damping shaft assembly, so that the arm can be foldably connected to the drone body frame through the folding shaft assembly or the damping shaft assembly.

[0022] The drone arm provided above, by integrating the lighting device into the drone arm, can cleverly use the airflow generated by the drone's own propeller to actively dissipate heat and enhance the heat dissipation effect. At the same time, it will not affect the take-off and landing of the drone, and there is no need to additionally increase the height of the drone's tripod. The heat generated by the lighting device does not affect other electronic equipment in the drone.

[0023] Based on the same or similar inventive concept, the present application also provides another drone arm.

[0024] A drone arm includes a lighting device; the arm is provided with an elongated through-hole in the vertical or horizontal direction; the lighting device is installed on the arm through the through-hole and is sealed with the through-hole; the lighting device includes a heat sink, a light board, and a lampshade; the lampshade and the heat sink form a closed space for installing the light board; the light board is installed on the heat sink, and a plurality of fins are provided on the back of the heat sink to enhance heat dissipation. With such an arrangement, by integrating the lighting device into the drone arm, the airflow generated by the drone's own propeller can be cleverly utilized for active heat dissipation, thereby enhancing the heat dissipation effect. At the same time, the drone can be taken off and landed without affecting the drone, and there is no need to increase the height of the drone's tripod. In addition, the heat generated by the lighting device does not affect other electronic equipment in the drone.

[0025] Based on the same or similar inventive concept, the present application also provides another drone arm.

[0026] A drone arm, wherein at least one side of the arm is provided with a plurality of fins for dissipating heat from the arm; the plurality of fins are arranged in the wind field below the rotating surface of the propeller blades to actively dissipate heat using the airflow generated by the propeller; the plurality of fins are arranged to change from dense to dense from the middle to both ends, and / or the size of the fins changes from large to small from the middle to both ends, that is, the spacing between the plurality of fins first changes from large to small and then from small to large from the end to the root of the arm, and the size of the fins first changes from small to large and then from large to small from the end to the root of the arm. In this embodiment, it is suitable for scenarios where the arm is equipped with a heating device, such as a lighting device installed in a close-fitting manner.

[0027] In one embodiment, a plurality of first balancing holes are provided on the fins for increasing the heat dissipation area of ​​the fins, utilizing the pressure difference on both sides of the fins or the disturbance generated when the air flows through the holes to enhance the air convection in the first balancing holes, and balancing the air pressure on both sides of the fins, reducing the lateral airflow and vortex at the edge of the fins caused by the pressure difference on both sides of the fins, and reducing noise.

[0028] In one embodiment, a plurality of second balancing holes are further provided on the fins, and the aperture of the second balancing holes is smaller than the aperture of the first balancing holes. The second balancing holes are used to balance the air pressure on both sides of the fins and reduce the lateral airflow and vortex caused by the air pressure difference on both sides of the fins; the first balancing holes are provided at the upper part and / or the middle part of the fins, and the second balancing holes are provided along the edge of the fins.

[0029] In one embodiment, the side walls of the fins are further provided with guide ribs, which are used to comb the air flowing through the fins, thereby enhancing heat dissipation and reducing the noise of fin vibration caused by air flow turbulence.

[0030] In one embodiment, a plurality of grooves are provided on the outer surface of the arm at the root of the fins to increase the heat dissipation area, reduce the weight of the arm and increase the rigidity of the arm.

[0031] In one embodiment, the fins are designed to be arc-shaped in the transverse direction of the arm, and a plurality of the fins are arranged in concentric circles, so as to increase the heat dissipation area and improve the airflow rate.

[0032] In one embodiment, the arm is a hollow structure, and several fins are arranged on the upper surface of the upper side wall of the arm; a lighting device is provided on at least one side of the arm or inside the arm; the lighting device is installed close to the fins and forms a heat conduction channel with the fins, so that the fins can conduct heat from the lighting device for dissipation; at least the area on the arm between the lighting device and the fins is made of a good thermal conductor material; the contact surface between the lighting device and the arm is provided with thermally conductive silicone or graphene thermally conductive film.

[0033] The drone arm provided above can cleverly use the airflow generated by the drone's own propeller to actively dissipate heat from the arm, thereby enhancing the heat dissipation effect of the arm without affecting the drone's take-off and landing. There is no need to additionally increase the height of the drone's tripod, and thus, it is possible to integrate and install equipment with higher heat output in the drone arm, so that the heat does not affect other electronic equipment in the drone, such as integrating and installing lighting devices in the drone arm.

[0034] Based on the above content, this application also provides a drone frame.

[0035] A drone frame includes a body frame and an arm connected to the body frame, wherein the arm is the drone arm described in any of the above embodiments; further includes a power supply assembly; the power supply assembly includes a slider, a first spring, and a power supply mounting base fixedly connected to the body frame; one of the power supply mounting base and the slider is provided with a slide rail, and the other is provided with a slide groove slidably connected to the slide rail, and the slide rail and the slide groove are both vertically arranged; one end of the first spring is connected to the power supply mounting base and the other end is connected to the slider, so that the displacement between the slider and the power supply mounting base can compress or stretch the first spring; the slider is used to connect a power cord to the outside. In this embodiment, vertical is based on an unmanned hovering state, in which case vertical means perpendicular to the ground, and the drone body frame is used to carry or install the drone's control panel, power supply and other major components.

[0036] In one embodiment, the slider is slidably connected to the power supply mounting base.

[0037] In one embodiment, the body frame and the arm are foldably connected.

[0038] In one embodiment, the body frame and the arm are rotated and folded by a folding shaft assembly or a damping shaft assembly.

[0039] In one embodiment, the power supply mount is a cavity structure, the slide rail or slide groove is disposed on the inner wall of the cavity, the slider is disposed within the cavity and has a clearance fit or transition fit with the inner wall of the cavity; the power supply mount is also provided with an electrode sheet, the main body of which is disposed on the inner wall of the cavity and extends along the length of the cavity; the slider is provided with an elastic electrode, which contacts the electrode sheet and applies elastic pressure under the action of elasticity to prevent the elastic electrode from separating from the electrode sheet; the elastic electrode is externally connected to the power line and serves as an output electrode; the electrode sheet is electrically connected to the drone's electrical device and serves as an input electrode. In this embodiment, the cavity is cylindrical.

[0040] In one embodiment, the cavity is cylindrical.

[0041] In one embodiment, the power supply mounting base is columnar and vertically mounted on the body frame.

[0042] In one embodiment, the power supply mounting base is cylindrical.

[0043] In one embodiment, a groove is provided on the side of the slider, that is, the outer peripheral side close to the inner wall of the cavity, and the elastic electrode is arranged in the groove, which limits the elastic electrode in the circumferential direction so that the elastic electrode is controlled within a set range in the circumferential direction.

[0044] In one embodiment, the electrode sheet includes a positive electrode sheet and a negative electrode sheet, and the positive electrode sheet and the negative electrode sheet are insulated; the elastic electrode includes a positive electrode spring sheet and a negative electrode spring sheet, and the positive electrode spring sheet is in contact with the positive electrode sheet, and the negative electrode spring sheet is in contact with the negative electrode sheet.

[0045] In one embodiment, the elastic electrode is a conductive spring.

[0046] In one embodiment, the spring is made of copper.

[0047] In one embodiment, a guide post is provided at the lower end of the slider, and the first spring is mounted on the guide post. The guide post has a cable hole for passing the power cord. The power supply mounting base also has a stop structure at the end of the slider path to limit the range of motion of the slider. One end of the first spring is connected to the stop structure.

[0048] The drone frame provided above, by integrating the lighting device into the drone arm, can cleverly use the airflow generated by the drone's own propeller to actively dissipate heat, thereby enhancing the heat dissipation effect. At the same time, it can not affect the drone's take-off and landing, and there is no need to additionally increase the height of the drone's tripod. The heat generated by the lighting device does not affect other electronic equipment in the drone. In addition, by providing a power supply mounting seat and a slider that slides and elastically connects to the power supply mounting seat on the body frame, the body frame of the drone of the present application can be elastically connected to the power cord, so that the drone using the drone frame can obtain a continuous supply of electricity by connecting to an external power source, thereby significantly improving its endurance. The elastic connection can better maintain the stability of the drone when it is blown by the wind or accidentally touches the power cord.

[0049] Based on the above content, the present application also provides a tethered drone.

[0050] A tethered drone comprises any one of the drone arms described above, or comprises any one of the drone frames described above.

[0051] In one embodiment, the body frame is connected to at least three arms, and the arms are evenly arranged around the body frame.

[0052] In one embodiment, the body frame is connected to four arms, and the arms are evenly arranged around the body frame.

[0053] The tethered drone provided above, by integrating the lighting device into the drone's arm, can cleverly use the airflow generated by the drone's own propeller to actively dissipate heat, thereby enhancing the heat dissipation effect. At the same time, it can not affect the drone's take-off and landing, and there is no need to additionally increase the height of the drone's tripod. The heat generated by the lighting device does not affect other electronic equipment in the drone. In addition, by providing a power supply mounting seat and a slider that slides and elastically connects to the power supply mounting seat on the body frame, the body frame of the drone of the present application can be elastically connected to the power cord, so that the drone using the drone frame can obtain a continuous supply of electricity by connecting to an external power source, thereby significantly improving its endurance. The elastic connection can better maintain the stability of the drone when it is blown by the wind or accidentally touches the power cord. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 A schematic diagram of the assembly structure of a drone arm provided by one or more embodiments;

[0055] Figure 2 A schematic diagram of a drone arm transfer structure provided for one or more embodiments;

[0056] Figure 3 A schematic diagram of the structure of a drone arm provided for one or more embodiments;

[0057] Figure 4 A schematic diagram of an enlarged cross-section of section A of a drone arm provided by one or more embodiments;

[0058] Figure 5 A schematic diagram of the curved fin structure of a drone arm provided by one or more embodiments;

[0059] Figure 6 A schematic diagram of a fin structure provided for one or more embodiments;

[0060] Figure 7 A schematic diagram of a fin structure provided for one or more embodiments;

[0061] Figure 8 A schematic diagram of a fin structure provided for one or more embodiments;

[0062] Figure 9 A schematic diagram of a transverse cross-sectional structure of a drone arm provided by one or more embodiments;

[0063] Figure 10 A schematic diagram of a cross-sectional structure of a fin provided for one or more embodiments;

[0064] Figure 11 A schematic diagram of the drone frame structure provided for one or more embodiments;

[0065] Figure 12 A schematic diagram of the structure of a drone power supply assembly provided for one or more embodiments;

[0066] Figure 13 A schematic diagram of a slider structure in a power supply assembly provided for one or more embodiments;

[0067] Figure 14 A schematic diagram of the base assembly structure of a drone arm provided by one or more embodiments;

[0068] Figure 15 A schematic diagram of the structure of the drone arm root assembly part B provided in one or more embodiments;

[0069] Figure 16 A schematic diagram of the folding structure of the drone arm provided in one or more embodiments;

[0070] Figure 17 A schematic diagram of the assembly structure of a drone arm provided by one or more embodiments;

[0071] Figure 18 A schematic diagram of the structure of a drone arm provided for one or more embodiments;

[0072] Figure 19A schematic diagram of the C-section structure of a drone arm provided for one or more embodiments.

[0073] Explanation of reference numerals: 100. Arm; 110. Fin; 111. Guide rib; 112. First balancing hole; 113. Second balancing hole; 114. First heat dissipation surface; 115. Second heat dissipation surface; 116. Heat dissipation hole; 120. Groove; 130. Axis hole; 140. Motor mounting seat; 150. Lamp board mounting groove; 161. First curved surface; 210. Lamp board; 220. Lamp cover; 300. Folding shaft assembly; 310. Push rod; 311. Locking portion; 320. Second spring; 330. Limit bolt; 400. Thermal conductive silicone; 500. Body Frame; 510. U-shaped mounting groove; 520. Limiting hole; 531. First limiting protrusion; 532. Second limiting protrusion; 600. Power supply assembly; 610. Power supply mounting base; 611. Slide groove; 612. Retraction stop; 620. Slider; 621. Slide rail; 622. Positive electrode spring; 623. Negative electrode spring; 630. First spring; 640. Elastic ejector assembly; 641. Elastic telescopic rod; 650. Guide column; 651. Wire; 652. Power supply interface; 653. Pin; 654. External thread; 661. Positive electrode sheet; 662. Negative electrode sheet. DETAILED DESCRIPTION

[0074] In this patent document, the following discussion Figure 1-19 The various embodiments used to describe the principles or methods of the present disclosure are for illustration only and should not be construed in any way as limiting the scope of the present disclosure. With reference to the accompanying drawings, preferred embodiments of the present disclosure will be described below. In the following description, detailed descriptions of well-known functions or configurations will be omitted so as not to obscure the subject matter of the present disclosure with unnecessary details. Moreover, the terms used herein will be defined according to the functions of the present invention. Therefore, the terms may vary depending on the intention or usage of the user or operator. Therefore, the terms used herein must be understood based on the description made herein.

[0075] A drone arm 100, such as Figure 1 Figure 2 As shown, at least one side of the arm 100 is equipped with several fins 110 and a lighting device. The lighting device includes a light board 210 and a lampshade 220. The lampshade 220 and the arm 100 form a sealed space for mounting the light board 210. The light board 210 is mounted close to the fins 110 and forms a heat conduction channel with the fins 110. At least the area between the light board 210 and the fins 110 on the arm 100 is made of a material that is a good thermal conductor. The fins 110 are used to enhance heat dissipation.

[0076] In one embodiment, Figure 2As shown, the arm 100 is provided with a light board mounting groove 150 , and the fin 110 is integrally connected with the light board mounting groove 150 150 . The light board mounting groove 150 is used to mount the light board 210 .

[0077] In one embodiment, Figure 3 Figure 4 As shown, the arm 100 is a hollow structure, with several fins 110 provided on the upper surface of the upper sidewall of the arm 100. The lower sidewall of the arm 100 has a long hole through which the lighting device is installed in the arm 100, and the light board 210 is installed against the inner surface of the upper sidewall of the arm 100.

[0078] In one embodiment, Figure 1 Figure 2 As shown, the arm 100 is made of a U-shaped material, the lamp panel 210 is installed at the bottom of the U-shaped material, the lampshade 220 is sealed and connected to the opening of the U-shaped material, and the fin 110 is arranged on the outer side of the U-shaped material.

[0079] In one embodiment, the arm 100 is made of aluminum alloy, which enhances heat dissipation while reducing the weight of the arm 100.

[0080] In one embodiment, a long slot is formed on the lower side of the arm 100, and the lighting device is installed in the long slot.

[0081] In one embodiment, Figure 2 As shown, the lamp board 210 is installed at the bottom of the long slot, and the lamp cover 220 is sealed and connected to the opening of the long slot.

[0082] In one embodiment, the fin 110 is disposed at a middle section of the arm 100 .

[0083] In one embodiment, Figure 1 As shown, the fin 110 is arranged below the rotating surface of the drone wing blade.

[0084] In one embodiment, Figure 4 As shown, thermally conductive silicone 400 is placed between the light board 210 and the mounting surface. The back of the light board 210 has a wavy heat dissipation surface, which is connected to the main body of the arm 100 through the surface filled with thermally conductive silicone 400. This reduces the increase in thermal resistance caused by the mounting gap. In this embodiment, the thickness of the thermally conductive silicone 400 is preferably 1 mm.

[0085] In one embodiment, Figure 2 As shown, a mounting groove 150 is further provided on the arm 100 at the mounting location of the light board 210 , which is used to fill the thermal conductive silicone 400 or to mount the light board 210 as a whole in the mounting groove 150 .

[0086] In one embodiment, the arm 100 body is provided with a heat dissipation enhancement area, and the light board 210 and the fins 110 are both provided in the heat dissipation enhancement area. The inner wall of the heat dissipation enhancement area is laminated with a graphene thermal conductive film.

[0087] In one embodiment, Figure 1 Figure 3 As shown, the fins 110 are arranged to be dense and combed from the middle to the ends. That is, the spacing between the fins 110 is first large and then small, and then large from the end to the root of the arm 100.

[0088] In one embodiment, Figure 5 As shown, the fins 110 are designed in an arc shape in the lateral direction of the arm 100, and several fins 110 are arranged in concentric circles to increase the heat dissipation area and improve the amount of airflow. In this embodiment, the more airflow passing through the fins 110 per unit time, the more heat can be removed. Because the airflow generated by the propeller is in a spiral state, the fins 110 are designed to rotate in concentric circles. This allows more air to flow through the heat dissipation channels between the fins 110 and better matches the flow direction of the airflow, thereby enhancing the heat dissipation effect. At the same time, the concentric circle design also indirectly increases the heat dissipation area, further enhancing heat dissipation from a hardware perspective.

[0089] In one embodiment, the centers of the fins 110 are located on the rotation centerline of the drone wing.

[0090] In one embodiment, Figure 6 As shown, the width or length of the fin 110 is set to decrease from the root to the top. That is, the width of the root of the fin 110 is greater than the width of the top. For example, the fin 110 is trapezoidal, semicircular, etc. as a whole. In this embodiment, the conduction of heat in the arm 100 and the fin 110 follows the "gradient attenuation" law. The temperature is highest near the arm 100 (the source of heat), and the farther away from the arm 100, the lower the temperature (the heat is gradually carried away by the airflow). Therefore, the heat dissipation surface of the fin 110 is designed differently. This design allows the "heat dissipation capacity" of the fin 110 to fully match the "heat distribution", which not only ensures the heat dissipation efficiency in the high-temperature zone, but also avoids redundant design in the low-temperature zone, adapts to the trend of lowering temperature, avoids material waste, and reduces resistance to airflow (the smaller the size, the smoother the airflow).

[0091] In one embodiment, Figure 6 Figure 7 As shown, the thickness of the fin 110 is configured to decrease from the root to the top.

[0092] In one embodiment, the surface of the fin 110 is provided with serrated protrusions (serrated depth 2.5mm, spacing 6mm), and heat dissipation area-enhancing holes with a diameter of 4mm are evenly distributed. The hole walls are treated with micro-nano-level concave-convex textures to enhance convective heat dissipation through air disturbance.

[0093] In one embodiment, the windward section of the fin 110 is streamlined (not shown).

[0094] In one embodiment, a guide body (not shown) is provided at the free end, i.e., the top end, of the fin 110. The guide body is used to reduce vortexes generated by the flowing air at the top end of the fin, thereby reducing the noise generated by the fin 110. In this embodiment, the guide body can be shaped like a bulbous bow or a spindle.

[0095] In one embodiment, Figure 6 Figure 7 Figure 8 Figure 9 As shown, a plurality of first balancing holes 112 are provided on the fin 110, which are used to increase the heat dissipation area of ​​the fin 110, and utilize the pressure difference on both sides of the fin 110 or the disturbance generated when the air flows through the hole to enhance the air convection in the first balancing hole 112, while balancing the air pressure on both sides of the fin 110, reducing the lateral airflow and vortex at the edge of the fin 110 caused by the pressure difference on both sides of the fin 110, and reducing noise.

[0096] In one embodiment, Figure 6 Figure 7 Figure 8 Figure 9 As shown, the fin 110 is further provided with a plurality of second balancing holes 113. The aperture of the second balancing holes 113 is smaller than that of the first balancing holes 112. The second balancing holes 113 are used to balance the air pressure on both sides of the fin 110, thereby reducing the lateral airflow and vortex caused by the pressure difference on both sides of the fin 110. The first balancing holes 112 are provided at the top and / or middle of the fin 110, and the second balancing holes 113 are provided along the edge of the fin 110.

[0097] In one embodiment, Figure 6 Figure 7 Figure 8 Figure 9 As shown, the side walls of the fins 110 are further provided with guide ribs 111 , which are used to sort out the air flowing through the fins 110 , thereby enhancing heat dissipation and reducing the noise of the fins 110 caused by vibration of the fins 110 due to airflow turbulence.

[0098] In one embodiment, Figure 1As shown, a plurality of grooves 120 are provided on the outer surface of the arm 100 at the root of the fins 110 to increase the heat dissipation area, reduce the weight of the arm 100 and improve the rigidity of the arm 100.

[0099] In one embodiment, Figure 6 Figure 7 Figure 8 Figure 9 As shown, the aperture of the first balancing hole 112 is 2-4 times the aperture of the second balancing hole 113 .

[0100] In one embodiment, Figure 6-9 As shown, the diameter of the first balancing hole 112 is between 3 mm and 5 mm.

[0101] In one embodiment, Figure 6-9 As shown, the diameter of the first balancing hole 112 is 4 mm.

[0102] In one embodiment, Figure 6-9 As shown, the diameter of the second balancing hole 113 is between 1 mm and 1.5 mm.

[0103] In one embodiment, Figure 6-9 As shown, the diameter of the second balancing hole 113 is 1.25 mm.

[0104] In one embodiment, Figure 7 As shown, the fin 110 is divided along the center line of the width, and the heat dissipation area on the windward side is larger than the heat dissipation area on the windward side, that is, the heat dissipation area of ​​the fin 110 is unevenly distributed.

[0105] In one embodiment, Figure 1-3 As shown, the fins 110 are arranged side by side along the length direction of the arm 100. In this embodiment, the fins 110 are generally arranged perpendicular to the length direction of the arm 100, and a plurality of fins 110 are arranged side by side along the length direction of the arm 100.

[0106] In one embodiment, Figure 10 As shown, the fin 110 includes a first heat dissipation surface 114 and a second heat dissipation surface 115 , wherein the first heat dissipation surface 114 or the second heat dissipation surface 115 is an arc surface, and a plurality of heat dissipation holes 116 are provided on the fin 110 to connect the first heat dissipation surface 114 and the second heat dissipation surface 115 .

[0107] In one embodiment, Figure 1 As shown, a plurality of grooves 120 are provided on the outer surface of the arm 100 at the root of the fins 110 to increase the heat dissipation area, reduce the weight of the arm 100 and improve the rigidity of the arm 100.

[0108] In one embodiment, the fins 110 are distributed in a concentric spiral shape along the outer wall of the heat dissipation enhancement area of ​​the arm 100, matching the direction of the spiral airflow generated by the rotor.

[0109] In one embodiment, Figure 6 As shown, the cross section of the fin 110 is a variable cross section trapezoid.

[0110] In one embodiment, the fin 110 has a lower base width of 14 mm and an upper base width of 9 mm at the end close to the arm 100, and a lower base width of 12 mm and an upper base width of 7 mm at the free end, and the height decreases linearly from 18 mm to 15 mm (not shown in the figure) to adapt to the heat conduction gradient.

[0111] In one embodiment, Figure 1 As shown, the end of the arm 100 is provided with a motor mounting base 140 for mounting a propeller motor. The base of the arm 100 is provided with an axis hole 130 for mounting a folding shaft assembly 300 or a damping shaft assembly, so that the arm 100 can be foldably connected to the drone body frame 500 through the folding shaft assembly or the damping shaft assembly.

[0112] In one embodiment, Figure 3 Figure 4 As shown, a limiting structure is also provided at the root of the arm 100. The limiting structure may be a protrusion, which is used to cooperate with the body frame 500 of the UAV to limit the folding angle between the arm 100 and the body frame 500 to a set range.

[0113] In one embodiment, fin 110 includes a first heat dissipation layer and a second heat dissipation layer (not shown) bonded together. The first and second heat dissipation layers are made of materials with different thermal expansion coefficients. This allows the free ends of fin 110 to bend in a predetermined direction when the temperature reaches a predetermined range, thereby enhancing heat dissipation. This embodiment sacrifices airflow smoothness and noise, resulting in poor airflow at fin 110 and increased noise.

[0114] In one embodiment, the first heat dissipation layer or the second heat dissipation layer is made of shape memory alloy.

[0115] The drone arm 100 provided above, by integrating the lighting device into the drone arm 100, can cleverly use the airflow generated by the drone's own propeller to actively dissipate heat and enhance the heat dissipation effect. At the same time, it can not affect the take-off and landing of the drone, and there is no need to additionally increase the height of the drone tripod. The heat generated by the lighting device does not affect other electronic equipment in the drone.

[0116] Based on the same or similar inventive concept, the present application also provides another drone arm 100.

[0117] A drone arm 100 includes a lighting device. The arm 100 is provided with a long strip through hole (not shown in the figure) in the vertical or horizontal direction. The lighting device is installed on the arm 100 through the through hole and is sealed with the through hole. The lighting device includes a heat sink, a lamp board 210 and a lampshade 220. The lampshade 220 and the heat sink form a closed space for installing the lamp board 210. The light board 210 is installed on the heat sink. A number of fins 110 are provided on the back of the heat sink to enhance heat dissipation. In this embodiment, the arm 100 and the lighting device are independent of each other. The arm is provided with a long strip through hole for installing the lighting device. The lighting device is fixedly connected to the arm 100 after passing through the long strip through hole.

[0118] In one embodiment, the elongated through hole is opened along the central axis of the arm 100 .

[0119] In one embodiment, the long strip through hole is opened in the middle of the drone arm 100. In this configuration, after the lighting device is installed on the arm 100, the fin 110 is located in the middle section of the arm 100.

[0120] In one embodiment, the long strip through hole is arranged below the rotating surface of the drone wing blade. In this arrangement, after the lighting device is installed on the arm 100, the fin 110 is arranged below the rotating surface of the drone wing blade.

[0121] In one embodiment, the arm 100 is made of aluminum alloy, which enhances heat dissipation while reducing the weight of the arm 100.

[0122] In one embodiment, referring to Figure 1 Figure 3 The fins 110 are arranged to change from dense to comb from the middle to the ends. That is, the spacing between the fins 110 is first large to small and then from small to large from the end to the root of the arm 100.

[0123] In one embodiment, referring to Figure 5 The fins 110 are designed in an arc shape in the lateral direction of the arm 100, and several fins 110 are arranged in concentric circles to increase the heat dissipation area and improve the amount of airflow. In this embodiment, the more airflow passing through the fins 110 per unit time, the more heat can be removed. Because the airflow generated by the propeller is in a spiral state, the fins 110 are designed to rotate in concentric circles. This allows more air to flow through the heat dissipation channels between the fins 110 and better matches the flow direction of the airflow, thereby enhancing the heat dissipation effect. At the same time, the concentric circle design also indirectly increases the heat dissipation area, further enhancing heat dissipation from a hardware perspective.

[0124] In one embodiment, the centers of the fins 110 are located on the rotation centerline of the drone wing.

[0125] In one embodiment, referring to Figure 6 , the width or length of the fin 110 is set to decrease from the root to the top. That is, the width of the root of the fin 110 is greater than the width of the top. For example, the fin 110 is trapezoidal, semicircular, etc. as a whole. In this embodiment, the conduction of heat in the arm 100 and the fin 110 follows the "gradient attenuation" law. The temperature is highest near the arm 100 (the source of heat), and the farther away from the arm 100, the lower the temperature (the heat is gradually carried away by the airflow). Therefore, the heat dissipation surface of the fin 110 is designed differently. This design allows the "heat dissipation capacity" of the fin 110 to fully match the "heat distribution", which not only ensures the heat dissipation efficiency in the high-temperature zone, but also avoids redundant design in the low-temperature zone, adapts to the trend of lowering temperature, avoids material waste, and reduces resistance to airflow (the smaller the size, the smoother the airflow).

[0126] In one embodiment, referring to Figure 6 Figure 7 The thickness of the fin 110 decreases from the root to the top.

[0127] In one embodiment, the surface of the fin 110 is provided with serrated protrusions (serrated depth 2.5mm, spacing 6mm), and heat dissipation area-enhancing holes with a diameter of 4mm are evenly distributed. The hole walls are treated with micro-nano-level concave-convex textures to enhance convective heat dissipation through air disturbance.

[0128] In one embodiment, referring to Figure 6-9 The fins 110 are provided with a plurality of first balancing holes 112 for increasing the heat dissipation area of ​​the fins 110 and balancing the air pressure on both sides of the fins 110, thereby reducing the lateral airflow caused by the pressure difference on both sides of the fins 110. Since the active heat dissipation of the fins 110 of the present application is driven by the propeller airflow, and the pitch / chord length of the propeller changes from the root to the tip, the airflow under the blade is unevenly distributed in the direction of the arm 100 (the airflow area with a large pitch has a large flow rate / wind speed, and the airflow area with a small pitch has a small flow rate / wind speed). The fins 110 of the present application are arranged piece by piece along the length direction of the arm 100. The uneven distribution of flow rate / wind speed in the length direction of the arm 100 will easily cause an air pressure difference on both sides of the fins 110. This air pressure difference will cause the airflow to flow at the edge of the fins 110, which will not only easily cause the fins 110 to vibrate and generate unnecessary noise, but also the infusion on both sides of the fins 110 will disrupt the overall air flow field around the fins 110, generating harmful wind resistance.

[0129] In one embodiment, the first balancing hole 112 is disposed at the upper end of the fin 110 , close to the edge region.

[0130] In one embodiment, referring to Figure 6-9The fin 110 is provided with a plurality of second balancing holes 113. The aperture of the second balancing holes 113 is smaller than that of the first balancing holes 112. The second balancing holes 113 are used to balance the air pressure on both sides of the fin 110, thereby reducing the lateral airflow caused by the pressure difference on both sides of the fin 110. In this embodiment, if the air pressure on both sides of the fin 110 is unbalanced, it is easy to generate lateral airflow and vortex at the edge of the fin 110, which can easily cause the edge of the fin 110 to vibrate, generate noise and harmful airflow. The second balancing holes 113 balance the air pressure on both sides of the fin 110 before the airflow reaches the edge of the fin 110, which can effectively reduce the harmful airflow at the edge of the fin 110, reduce the size and intensity of the vortex, and reduce noise.

[0131] In one embodiment, referring to Figure 6 The second balancing holes 113 are provided at the left and right end regions and / or the bottom region of the fin 110. In this embodiment, the left and right ends of the fin 110 refer to positions relative to the free end (upper end) and the root (bottom end).

[0132] In one embodiment, referring to Figure 10 The fin 110 includes a first heat dissipation surface 114 and a second heat dissipation surface 115 , wherein the first heat dissipation surface 114 or the second heat dissipation surface 115 is an arc surface, and a plurality of heat dissipation holes 116 are provided on the fin 110 to connect the first heat dissipation surface 114 and the second heat dissipation surface 115 .

[0133] In one embodiment, the windward section of the fin 110 is streamlined.

[0134] In one embodiment, a guide body is further designed at the free end, ie, the top end, of the fin 110 . The guide body is used to reduce the vortex generated by the flowing air at the top end of the fin, thereby reducing the noise generated by the fin 110 .

[0135] In one embodiment, the sidewalls of the fins 110 are further provided with guide ribs 111 for combing the air flowing through the fins 110 , thereby enhancing heat dissipation and reducing noise.

[0136] In one embodiment, a plurality of grooves 120 are further provided on the outer surface of the arm 100 at the root of the fins 110 to increase the heat dissipation area, reduce the weight of the arm 100 and increase the rigidity of the arm 100 .

[0137] In one embodiment, the fins 110 are distributed in a concentric spiral shape along the outer wall of the heat dissipation enhancement area of ​​the arm 100, matching the direction of the spiral airflow generated by the rotor.

[0138] In one embodiment, referring to Figure 6 The cross section of the fin 110 is a variable cross section trapezoid.

[0139] In one embodiment, referring to Figure 6 The fin 110 has a lower bottom width of 14 mm and an upper bottom width of 9 mm at the end close to the arm 100, and a lower bottom width of 12 mm and an upper bottom width of 7 mm at the free end), and the height decreases linearly from 18 mm to 15 mm to adapt to the heat conduction gradient.

[0140] In one embodiment, referring to Figure 1 The end of the arm 100 is provided with a motor mount 140 for mounting a propeller motor. The base of the arm 100 is provided with an axis hole 130 for mounting a folding shaft assembly 300 or a damping shaft assembly, thereby facilitating a foldable connection between the arm 100 and the drone frame 500 via the folding shaft assembly or the damping shaft assembly.

[0141] In one embodiment, referring to Figure 3-4 A limiting structure is also provided at the root of the arm 100. The limiting structure can be a protrusion, which is used to cooperate with the body frame 500 of the drone to limit the folding angle between the arm 100 and the body frame 500 to a set range.

[0142] In one embodiment, fin 110 includes a first heat dissipation layer and a second heat dissipation layer bonded together. The first and second heat dissipation layers are made of materials with different thermal expansion coefficients. This allows the free ends of fin 110 to bend in a predetermined direction when the temperature reaches a predetermined range, thereby enhancing heat dissipation. This embodiment sacrifices airflow smoothness and noise, resulting in poor airflow and increased noise at fin 110.

[0143] In one embodiment, the first heat dissipation layer or the second heat dissipation layer is made of shape memory alloy.

[0144] The drone arm 100 provided above, by integrating the lighting device into the drone arm 100, can cleverly use the airflow generated by the drone's own propeller to actively dissipate heat and enhance the heat dissipation effect. At the same time, it can not affect the take-off and landing of the drone, and there is no need to additionally increase the height of the drone tripod. The heat generated by the lighting device does not affect other electronic equipment in the drone.

[0145] Based on the same or similar inventive concept, the present application also provides another drone arm 100.

[0146] A drone arm 100, such as Figure 1As shown, at least one side of the arm 100 is provided with a plurality of fins 110 for dissipating heat from the arm 100. The plurality of fins 110 are arranged in the wind field below the rotating surface of the propeller blades to actively dissipate heat using the airflow generated by the propeller. The plurality of fins 110 are arranged to be combed from dense to dense from the middle to both ends, and / or the size of the fins 110 is changed from large to small from the middle to both ends, that is, the spacing between the plurality of fins 110 is first changed from large to small and then from small to large from the end to the root of the arm 100, and the size of the fins 110 is first changed from small to large and then from large to small from the end to the root of the arm 100. In this embodiment, it is suitable for scenarios where the arm 100 is equipped with a heating device, such as a lighting device installed in close proximity.

[0147] In one embodiment, Figure 6-9 As shown, a plurality of first balancing holes 112 are provided on the fin 110, which are used to increase the heat dissipation area of ​​the fin 110, and utilize the pressure difference on both sides of the fin 110 or the disturbance generated when the air flows through the hole to enhance the air convection in the first balancing hole 112, while balancing the air pressure on both sides of the fin 110, reducing the lateral airflow and vortex at the edge of the fin 110 caused by the pressure difference on both sides of the fin 110, and reducing noise.

[0148] In one embodiment, Figure 6-9 As shown, the fin 110 is further provided with a plurality of second balancing holes 113. The aperture of the second balancing holes 113 is smaller than that of the first balancing holes 112. The second balancing holes 113 are used to balance the air pressure on both sides of the fin 110, thereby reducing the lateral airflow and vortex caused by the pressure difference on both sides of the fin 110. The first balancing holes 112 are provided at the top and / or middle of the fin 110, and the second balancing holes 113 are provided along the edge of the fin 110.

[0149] In one embodiment, Figure 6-9 As shown, the side walls of the fins 110 are further provided with guide ribs 111 , which are used to sort out the air flowing through the fins 110 , thereby enhancing heat dissipation and reducing the noise of the fins 110 caused by vibration of the fins 110 due to airflow turbulence.

[0150] In one embodiment, Figure 1 As shown, a plurality of grooves 120 are provided on the outer surface of the arm 100 at the root of the fins 110 to increase the heat dissipation area, reduce the weight of the arm 100 and improve the rigidity of the arm 100.

[0151] In one embodiment, Figure 5 As shown, the fins 110 are designed to be arc-shaped in the transverse direction of the arm 100, and a plurality of fins 110 are arranged in concentric circles to increase the heat dissipation area and improve the airflow rate.

[0152] In one embodiment, Figure 3-4 As shown, arm 100 is a hollow structure, with several fins 110 disposed on the upper surface of the upper sidewall of arm 100. A lighting device is disposed on at least one side of arm 100 or within arm 100. The lighting device is mounted close to fins 110 and forms a heat conduction channel with fins 110, allowing fins 110 to dissipate heat from the lighting device. At least the area of ​​arm 100 between the lighting device and fins 110 is made of a material that is a good thermal conductor. The mating surface between the lighting device and arm 100 is coated with thermally conductive silicone 400 or graphene thermal film.

[0153] In one embodiment, Figure 6-9 As shown, the aperture of the first balancing hole 112 is 2-4 times the aperture of the second balancing hole 113 .

[0154] In one embodiment, Figure 6-9 As shown, the diameter of the first balancing hole 112 is between 3 mm and 5 mm.

[0155] In one embodiment, Figure 6-9 As shown, the diameter of the first balancing hole 112 is 4 mm.

[0156] In one embodiment, Figure 6-9 As shown, the diameter of the second balancing hole 113 is between 1 mm and 1.5 mm.

[0157] In one embodiment, Figure 6-9 As shown, the diameter of the second balancing hole 113 is 1.25 mm.

[0158] In one embodiment, Figure 10 As shown, the fin 110 includes a first heat dissipation surface 114 and a second heat dissipation surface 115 , wherein the first heat dissipation surface 114 or the second heat dissipation surface 115 is an arc surface, and a plurality of heat dissipation holes 116 are provided on the fin 110 to connect the first heat dissipation surface 114 and the second heat dissipation surface 115 .

[0159] In one embodiment, Figure 7 As shown, the fin 110 is divided along the center line of the width, and the heat dissipation area on the windward side is larger than the heat dissipation area on the windward side, that is, the heat dissipation area of ​​the fin 110 is unevenly distributed.

[0160] In one embodiment, Figure 1-5 As shown, the fins 110 are arranged side by side along the length direction of the arm 100. In this embodiment, the fins 110 are generally arranged perpendicular to the length direction of the arm 100, and a plurality of fins 110 are arranged side by side along the length direction of the arm 100.

[0161] In one embodiment, Figure 1-5As shown, the lighting device includes a light board 210 and a lampshade 220. The lampshade 220 and the arm 100 enclose a sealed space for mounting the light board 210. The light board 210 is mounted close to the fins 110, forming a heat conduction channel with the fins 110. At least the area on the arm 100 between the light board 210 and the fins 110 is made of a material that is a good thermal conductor.

[0162] In one embodiment, Figure 6-9 As shown, the width or length of the fin 110 is set to decrease from the root to the top. That is, the width of the root of the fin 110 is greater than the width of the top. For example, the fin 110 is trapezoidal, semicircular, etc. as a whole. In this embodiment, the conduction of heat in the arm 100 and the fin 110 follows the "gradient attenuation" law. The temperature is highest near the arm 100 (the source of heat), and the farther away from the arm 100, the lower the temperature (the heat is gradually carried away by the airflow). Therefore, the heat dissipation surface of the fin 110 is designed differently. This design allows the "heat dissipation capacity" of the fin 110 to fully match the "heat distribution", which not only ensures the heat dissipation efficiency in the high-temperature zone, but also avoids redundant design in the low-temperature zone, adapts to the trend of lowering temperature, avoids material waste, and reduces resistance to airflow (the smaller the size, the smoother the airflow).

[0163] In one embodiment, Figure 6-7 As shown, the thickness of the fin 110 is configured to decrease from the root to the top.

[0164] In one embodiment, the surface of the fin 110 is provided with serrated protrusions (serrated depth 2.5mm, spacing 6mm), and heat dissipation area-enhancing holes with a diameter of 4mm are evenly distributed. The hole walls are treated with micro-nano-level concave-convex textures to enhance convective heat dissipation through air disturbance.

[0165] In one embodiment, the windward section of the fin 110 is streamlined.

[0166] In one embodiment, a guide body is further designed at the free end, ie, the top end, of the fin 110 . The guide body is used to reduce the vortex generated by the flowing air at the top end of the fin, thereby reducing the noise generated by the fin 110 .

[0167] In one embodiment, the fins 110 are distributed in a concentric spiral shape along the outer wall of the heat dissipation enhancement area of ​​the arm 100, matching the direction of the spiral airflow generated by the rotor.

[0168] In one embodiment, the cross-section of the fin 110 is a variable-cross-section trapezoid, which adapts to the trend of temperature reduction, avoids material waste, and reduces resistance to airflow.

[0169] In one embodiment, the fin 110 has a lower bottom width of 14 mm and an upper bottom width of 9 mm near the arm 100, and a lower bottom width of 12 mm and an upper bottom width of 7 mm at the free end, and the height decreases linearly from 18 mm to 15 mm to adapt to the heat conduction gradient.

[0170] In one embodiment, Figure 1 As shown, the end of the arm 100 is provided with a motor mounting base 140 for mounting a propeller motor. The base of the arm 100 is provided with an axis hole 130 for mounting a folding shaft assembly 300 or a damping shaft assembly, so that the arm 100 can be foldably connected to the drone body frame 500 through the folding shaft assembly or the damping shaft assembly.

[0171] In one embodiment, Figure 1-5 As shown, a limiting structure is also provided at the root of the arm 100. The limiting structure may be a protrusion, which is used to cooperate with the body frame 500 of the UAV to limit the folding angle between the arm 100 and the body frame 500 to a set range.

[0172] In one embodiment, fin 110 includes a first heat dissipation layer and a second heat dissipation layer (not shown) bonded together. The first and second heat dissipation layers are made of materials with different thermal expansion coefficients. This allows the free ends of fin 110 to bend in a predetermined direction when the temperature reaches a predetermined range, thereby enhancing heat dissipation. This embodiment sacrifices airflow smoothness and noise, resulting in poor airflow at fin 110 and increased noise.

[0173] In one embodiment, the first heat dissipation layer or the second heat dissipation layer is made of shape memory alloy.

[0174] The drone arm 100 provided above can cleverly use the airflow generated by the drone's own propeller to actively dissipate heat from the arm 100, thereby enhancing the heat dissipation effect of the arm 100 without affecting the take-off and landing of the drone. There is no need to additionally increase the height of the drone's tripod, and thus it is possible to integrate and install devices with higher heating power in the drone arm 100, so that the heat does not affect other electronic equipment in the drone, such as integrating and installing lighting devices in the drone arm 100.

[0175] Based on the above content, this application also provides a drone frame.

[0176] A drone frame, such as Figure 11 As shown, it includes a body frame 500 and an arm 100 connected to the body frame 500, and the arm 100 is the drone arm 100 in any of the above embodiments. It also includes a power supply component 600. Figure 12As shown, the power supply assembly 600 includes a slider 620, a first spring 630, and a power supply mounting base 610 fixedly connected to the body frame 500. Figure 11 As shown, one of the power supply mounting base 610 and the slider 620 is provided with a slide rail 621, and the other is provided with a slide groove 611 slidably connected to the slide rail 621, and the slide rail 621 and the slide groove 611 are both vertically arranged. Figure 12 As shown, one end of a first spring 630 is connected to a power supply mount 610, and the other end is connected to a slider 620, so that the displacement between the slider 620 and the power supply mount 610 can compress or stretch the first spring 630. The slider 620 is used to connect the power cord to the outside. In this embodiment, the vertical orientation is based on the drone's hovering state, in which case the vertical orientation is perpendicular to the ground. The drone frame 500 is used to support or mount the drone's main components, such as the control panel and power supply.

[0177] In one embodiment, Figure 11 As shown, the slider 620 is slidably connected to the power supply mounting base 610.

[0178] In one embodiment, the body frame 500 is connected to at least three arms 100 , and the arms 100 are evenly arranged around the body frame 500 .

[0179] In one embodiment, Figure 11 As shown, the body frame 500 is connected to four arms 100 , and the arms 100 are evenly arranged around the body frame 500 .

[0180] In one embodiment, Figure 11 As shown, the body frame 500 and the arm 100 are foldably connected.

[0181] In one embodiment, Figure 11 As shown, the body frame 500 and the arm 100 are rotated and folded via a folding shaft assembly 300 or a damping shaft assembly.

[0182] In one embodiment, the body frame 500 is further provided with a U-shaped mounting groove 510150, and the arm 100 is inserted into the mounting groove 150 and rotatably connected to the two opposite groove walls. With such a configuration, the bottom of the U-shaped mounting groove 510150 can be used as a stop structure after the arm 100 is unfolded.

[0183] In one embodiment, Figure 12As shown, the power supply mount 610 is a cavity structure, the slide rail 621 or the slide groove 611 is arranged on the inner wall of the cavity, and the slider 620 is arranged in the cavity and has a clearance fit or transition fit with the inner wall of the cavity. The power supply mount 610 is also provided with an electrode sheet, the main body of the electrode sheet is arranged on the inner wall of the cavity and extends along the length direction of the cavity, and the slider 620 is provided with an elastic electrode, which contacts the electrode sheet and applies elastic pressure under the action of elasticity to prevent the elastic electrode from separating from the electrode sheet. The elastic electrode is connected to the power line externally and serves as an output electrode. The electrode sheet is electrically connected to the electrical device of the drone and serves as an input electrode. In this embodiment, the cavity is columnar.

[0184] In one embodiment, the cavity is cylindrical.

[0185] In one embodiment, Figure 11 As shown, the power supply mounting base 610 is columnar and is vertically mounted on the body frame 500 .

[0186] In one embodiment, Figure 11 As shown, the power supply mounting base 610 is cylindrical.

[0187] In one embodiment, Figure 13 As shown, a groove is provided on the side of the slider 620, that is, the outer peripheral side close to the inner wall of the cavity, and the elastic electrode is provided in the groove, which limits the elastic electrode in the circumferential direction so that the elastic electrode is controlled within a set range in the circumferential direction.

[0188] In one embodiment, Figure 12 As shown, the electrode sheet includes a positive electrode sheet 661 and a negative electrode sheet 662, and the positive electrode sheet 661 and the negative electrode sheet 662 are insulated. Figure 13 As shown, the elastic electrode includes a positive electrode spring piece 622 and a negative electrode spring piece 623 . The positive electrode spring piece 622 is in contact with the positive electrode sheet 661 , and the negative electrode spring piece 623 is in contact with the negative electrode sheet 662 .

[0189] In one embodiment, Figure 12 As shown, the main body of the electrode sheet is a sheet-like structure, the elastic electrode contacts the electrode sheet and can slide along the main body of the electrode sheet, and at least a portion of the electrode sheet extends to the outer wall of the power supply mounting seat 610 for electrical connection with the electrical device of the drone.

[0190] In one embodiment, Figure 12-13 As shown, the elastic electrode adopts a conductive spring.

[0191] In one embodiment, the spring piece is made of copper.

[0192] In one embodiment, the electrode sheet is a copper sheet.

[0193] In one embodiment, Figure 12 As shown, a guide post 650 is provided at the lower end of the slider 620, and a first spring 630 is mounted on the guide post 650. A wire hole is provided in the guide post 650 for passing a wire 651. The power supply mounting base 610 is also provided with a stop 612 at the end of the slider 620 path to limit the range of motion of the slider 620.

[0194] In one embodiment, Figure 12 As shown, a power interface 652 is provided at one end of the guide post 650 away from the slider 620 , and a pin 653 is provided in the power interface 652 . The pin 653 is electrically connected to the elastic electrode through a wire 651 .

[0195] In one embodiment, Figure 12 As shown, an external thread 654 is provided on one end of the guide column 650 near the power interface 652, which is used to facilitate the power interface 652 to be connected to an external power cord through threaded engagement with the nut at the external power cord connector to fix the connection.

[0196] In one embodiment, Figure 12 As shown, an elastic push rod assembly 640 is also provided at the top of the cavity on the power supply mounting base 610. The elastic push rod assembly 640 includes a fixing part and an elastic telescopic rod 641. The fixing part is used to fix the elastic telescopic rod 641 on the power supply mounting base 610. The elastic telescopic rod 641 is used to push against the slider 620 within a set range, thereby buffering the movement of the slider 620 within the set range.

[0197] In one embodiment, Figure 12 As shown, the backstop portion 612 includes but is not limited to a backstop plate.

[0198] In one embodiment, Figure 12 As shown, one end of the first spring 630 is connected to the retaining structure.

[0199] In one embodiment, the guide post 650 is a rigid body.

[0200] In one embodiment, Figure 14-19 The arm 100 is provided with a first arc surface 161, and the distance from the first arc surface 161 to the rotation center of the arm 100 gradually decreases from the middle of the first arc surface 161 to the two ends of the first arc surface 161 (as shown in FIG. Figure 19 As shown). Figure 14-17As shown, the push rod 310 is also included. The push rod 310 is installed on the body frame 500 and is elastically connected to the body frame 500. The push rod 310 contacts the first curved surface 161 and is slidably connected to the first curved surface 161, so that when the arm 100 and the body frame 500 are folded and rotated with each other, the arm 100 can drive the push rod 310 to perform telescopic movement on the body frame 500, thereby buffering and assisting the folding or unfolding of the arm 100, making the folding and unfolding process of the arm 100 smoother, providing a good operating feel, and at the same time being used to maintain the relative position between the arm 100 and the body frame 500.

[0201] In one embodiment, Figure 15-17 As shown, the body frame 500 is further provided with a limiting hole 520 for mounting the push rod 310. The push rod 310 slides through the limiting hole 520. The push rod 310 is also provided with a locking portion 311. The locking portion 311 is disposed at one end of the push rod 310 to prevent the push rod 310 from falling out of the limiting hole 520, thereby restricting the push rod 310 from sliding within the limiting hole 520. In this embodiment, the limiting hole 520 is an elongated hole.

[0202] In one embodiment, Figure 17 As shown, the arm 310 further includes a spring 320 and a stop bolt 311. The push rod 310 is elastically connected to the frame 500 via the second spring 320. The stop bolt 311 is threadedly connected to the frame 500. The spring 320 is sleeved on the stop bolt 311, limiting the lateral freedom of the spring 320. The stop bolt 311 also adjusts the distance between the end of the stop bolt 311 and the push rod 310 by adjusting the degree of threaded engagement with the frame 500. By firmly abutting the push rod 310, the arm 310 is prevented from folding, thereby maintaining the arm in the extended state.

[0203] In one embodiment, a second curved surface is provided at the end of the push rod 310 that contacts the first curved surface. The second curved surface contacts the first curved surface 161 , and the curvature of the second curved surface is smaller than or equal to that of the first curved surface 161 .

[0204] In one embodiment, Figure 15-17 As shown, the body frame 500 is provided with a first limiting protrusion 531 and a second limiting protrusion 532. The first limiting protrusion 531 and the second limiting protrusion 532 are located at both ends of the rotation trajectory of the arm 100. When the arm 100 is in the unfolded state, the arm 100 abuts the first limiting protrusion 531. When the arm 100 is in the folded state, the arm 100 abuts the second limiting protrusion 532.

[0205] The drone frame provided above, by integrating the lighting device into the drone arm 100, can cleverly use the airflow generated by the drone's own propeller to actively dissipate heat, thereby enhancing the heat dissipation effect. At the same time, it can not affect the drone's take-off and landing, and there is no need to additionally increase the height of the drone's tripod. The heat generated by the lighting device does not affect other electronic equipment in the drone. In addition, by providing a power supply mounting seat 610 and a slider 620 that slides and elastically connects to the power supply mounting seat 610 on the body frame 500, the body frame 500 of the drone of the present application can be elastically connected to the power cord, so that the drone using the drone frame can obtain a continuous supply of electricity by connecting to an external power source, thereby significantly improving its endurance. The elastic connection can better maintain the stability of the drone when it is blown by the wind or accidentally touches the power cord.

[0206] Based on the above content, the present application also provides a tethered drone.

[0207] A tethered drone comprises any one of the drone arms 100 described above, or comprises any one of the drone frames described above.

[0208] In one embodiment, the body frame 500 is connected to at least three arms 100 , and the arms 100 are evenly arranged around the body frame 500 .

[0209] In one embodiment, the body frame 500 is connected to four arms 100 , and the arms 100 are evenly arranged around the body frame 500 .

[0210] The tethered drone provided above, by integrating the lighting device into the drone arm 100, can cleverly use the airflow generated by the drone's own propeller to actively dissipate heat, thereby enhancing the heat dissipation effect. At the same time, it can not affect the drone's take-off and landing, and there is no need to additionally increase the height of the drone's tripod. The heat generated by the lighting device does not affect other electronic equipment in the drone. In addition, by providing a power supply mounting seat 610 and a slider 620 that slides and elastically connects to the power supply mounting seat 610 on the body frame 500, the body frame 500 of the drone of the present application can be elastically connected to the power cord, so that the drone using the drone frame can obtain a continuous supply of electricity by connecting to an external power source, thereby significantly improving its endurance. The elastic connection can better maintain the stability of the drone when it is blown by the wind or accidentally touches the power cord.

[0211] The above embodiments merely illustrate several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A drone arm, characterized in that: At least one side of the arm is provided with a plurality of fins, and at least one side is provided with a lighting device; The lighting device includes a lamp panel and a lampshade, wherein the lampshade and the machine arm enclose a closed space for installing the lamp panel; The light board is installed close to the fins and forms a heat conduction channel with the fins; At least the area between the light board and the fins on the arm is made of a good thermal conductor material; The fins are used to enhance heat dissipation.

2. The drone arm according to claim 1, characterized in that: The arm is a hollow structure, and a plurality of fins are provided on the upper surface of the upper side wall of the arm; The lower side wall of the arm is provided with a long hole, the lighting device is installed in the arm through the long hole, and the light board is installed in contact with the inner side of the upper side wall of the arm; or, The machine arm adopts a U-shaped material, the lamp panel is installed at the bottom of the U-shaped material, the lampshade is sealed and connected to the opening of the U-shaped material, and the fin is arranged on the outer side of the U-shaped material.

3. The drone arm according to claim 1, wherein: The plurality of fins are arranged to be combed from dense to dense from the middle to the two ends, that is, the spacing between the plurality of fins first becomes smaller and then becomes larger from the end to the root of the arm.

4. The drone arm according to claim 1, wherein: The fins are designed to be arc-shaped in the transverse direction of the machine arm, and a plurality of the fins are arranged in concentric circles to increase the heat dissipation area and improve the airflow rate.

5. The drone arm according to any one of claims 1 to 4, characterized in that: The width or length of the fin is configured to decrease from the root to the top.

6. The drone arm according to claim 1, wherein: A plurality of grooves are provided on the outer surface of the arm at the root of the fins to increase the heat dissipation area, reduce the weight of the arm and improve the rigidity of the arm.

7. A drone frame, comprising a body frame and an arm connected to the body frame, characterized in that: The arm is the UAV arm according to any one of claims 1 to 6; Also included is a power supply assembly; The power supply assembly includes a slider, a first spring, and a power supply mounting base fixedly connected to the body frame; One of the power supply mounting seat and the slider is provided with a slide rail, and the other is provided with a slide groove slidably connected to the slide rail, and the slide rail and the slide groove are both vertically arranged; One end of the first spring is connected to the power supply mounting base, and the other end is connected to the slider, so that the displacement between the slider and the power supply mounting base can compress or stretch the first spring; The slider is used for externally connecting a power line.

8. The UAV frame according to claim 7, characterized in that: The power supply mounting seat is a cavity structure, the slide rail or slide groove is arranged on the inner wall of the cavity, and the slider is arranged in the cavity and has a clearance fit or transition fit with the inner wall of the cavity; The power supply mounting base is further provided with an electrode sheet, the main body of the electrode sheet is provided on the inner wall of the cavity and extends along the length direction of the cavity, and the slider is provided with an elastic electrode, the elastic electrode contacts the electrode sheet and applies elastic pressure under the action of elasticity to prevent the elastic electrode from separating from the electrode sheet; The elastic electrode is externally connected to a power line; The electrode sheet is electrically connected to the electrical device of the drone.

9. The drone arm according to claim 7 or 8, characterized in that: A guide column is provided at the lower end of the slider, the first spring is sleeved on the guide column, and a wire hole for passing the power cord is opened in the guide column; The power supply mounting seat is also provided with a stop structure at the end of the slider path to limit the range of movement of the slider.

10. A tethered drone, characterized in that: It includes the drone arm according to any one of claims 1 to 6, or the drone frame according to any one of claims 7 to 9.

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