A flying power mechanism of a drone
By introducing servo motors and disassembly/removal mechanisms into the drone, the problems of difficult battery replacement and inconvenient rotor assembly disassembly/removal caused by fixed batteries have been solved. This enables quick opening and closing of the battery box and convenient installation of the rotor assembly, thereby improving the maintenance efficiency of the drone.
Patent Information
- Application Number
- CN202521498293.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-17
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-17
AI Technical Summary
In existing drone systems, the battery is fixed to the bottom of the frame, making it difficult to replace quickly, and the rotor assembly is difficult to disassemble and assemble, affecting maintenance efficiency.
An opening and closing mechanism including a servo motor, drive shaft, bevel gear, drive screw and traction rod is designed for the rapid opening and closing of the battery box; and a disassembly and assembly mechanism including slots, positioning holes and fastening bolts is designed for the installation and disassembly of the rotor assembly.
It enables rapid battery replacement and convenient assembly/disassembly of rotor components, improving the ease of maintenance and practicality of the drone's power components.
Smart Images

Figure CN224676445U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically to a flight power mechanism for a UAV. Background Technology
[0002] The power system of a drone mainly consists of components such as a power source, motor, electronic speed controller (ESC), and propeller. Different application areas have different requirements for the flight power mechanism. Consumer-grade drones are mainly used for aerial photography and entertainment, and their power system requirements emphasize portability, quietness, and a certain range. Professional-grade drones, on the other hand, are used in industries such as surveying, inspection, and logistics, and have higher requirements for payload capacity, range, and stability.
[0003] Existing devices mainly fix the battery to the bottom of the frame, making it difficult for some devices to move the battery box and battery away from the baffle, thus making it inconvenient to quickly replace the battery. At the same time, some devices make it difficult to disassemble and assemble damaged rotor components, thus making it inconvenient to maintain the UAV's power components, reducing the device's working efficiency and practicality. Therefore, in order to solve the above problems, a flight power mechanism for UAVs is proposed. Utility Model Content
[0004] The purpose of this utility model is to provide a flight power mechanism for a drone, in order to solve the problems mentioned in the background art. The existing devices mainly fix the battery to the bottom of the frame, making it difficult for some devices to move the battery box and the battery away from the restriction of the baffle, thus making it inconvenient to quickly replace the battery. At the same time, some devices make it difficult to disassemble and assemble damaged rotor components, thus making it inconvenient to maintain and operate the drone's power components.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a flight power mechanism for an unmanned aerial vehicle (UAV), comprising a frame, with arms inserted at the four corners of the frame, rotor assemblies fixedly connected to the ends of the arms, landing gear fixedly connected to the front and rear sides of the bottom of the frame, a battery box rotatably connected to the right side of the bottom of the frame, a battery housing inside the battery box, a transmission box fixedly connected to the top of the frame, and a controller fixedly connected to the right side of the transmission box; The transmission box is equipped with an opening and closing mechanism, which includes a servo motor. The bottom of the servo motor is fixedly connected to the top right side of the transmission box. The four corners of the frame are equipped with disassembly and assembly mechanisms, which include slots. The slots are opened inside the four corners of the frame.
[0006] Preferably, a drive shaft is fixedly connected to the bottom center of the servo motor, and the bottom end of the drive shaft passes through the transmission box and is fixedly connected to a first bevel gear.
[0007] Preferably, a second bevel gear is meshed with the lower part of the first bevel gear, and a transmission screw is fixedly connected to the inner wall of the second bevel gear. The two ends of the transmission screw are movably connected to both sides of the inner wall of the transmission box.
[0008] Preferably, a push sleeve is threaded on the left side of the outer wall of the transmission screw, and a traction rod is movably connected to the bottom of the outer wall of the push sleeve. The left end of the traction rod is movably connected to the top left side of the battery box.
[0009] Preferably, a baffle is provided on the bottom left side of the frame, and the left side of the battery can be attached to the right side wall of the baffle.
[0010] Preferably, the connector of the robotic arm can be inserted into the inside of the slot, the slot has a positioning hole, and the connector of the robotic arm has a fixing hole corresponding to the positioning hole.
[0011] Preferably, a fixing screw sleeve is inserted above the positioning hole, and a fastening bolt is inserted below the positioning hole, with the outer wall of the fastening bolt threaded onto the inner wall of the fixing screw sleeve.
[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model utilizes a servo motor, transmission shaft, first bevel gear, second bevel gear, transmission screw, push sleeve, traction rod, and baffle in its opening and closing mechanism. The controller activates the servo motor, which drives the transmission shaft and first bevel gear to rotate in a limited position. The first bevel gear meshes and drives the second bevel gear and transmission screw to rotate in a limited position. The transmission screw drives the push sleeve and the right end of the traction rod to slide left and right, causing the left end of the traction rod to rotate the battery box and battery in a limited position, thus opening and closing the battery box. This allows part of the battery box and battery to be released from the baffle, facilitating quick battery replacement and improving the convenience and practicality of the device.
[0013] 2. This utility model utilizes the slots, positioning holes, fixing holes, fixing sleeves, and fastening bolts in the disassembly and assembly mechanism. The rotor assembly is inserted into the four corners of the frame via the arm, and then the arm is fixed by the fixing sleeves and fastening bolts. This achieves the installation of the rotor assembly, allowing some devices to disassemble and assemble damaged rotor assemblies, facilitating the maintenance of the UAV's power components, and improving the disassembly and assembly capabilities and practicality of the device. Attached Figure Description
[0014] Figure 1 This is a front side perspective view of the structure of this utility model; Figure 2 This is a frontal sectional perspective view of the structure of this utility model; Figure 3 This is a front sectional perspective view of a portion of the transmission box and opening / closing mechanism of this utility model; Figure 4 This is a bottom perspective view of a partial structure of the frame and opening / closing mechanism of this utility model; Figure 5 This is a perspective sectional view of the right side of a partial structure of the arm and disassembly mechanism of this utility model.
[0015] In the diagram: 11. Frame; 12. Arm; 13. Rotor assembly; 14. Landing gear; 15. Battery box; 16. Battery; 17. Transmission box; 18. Controller; 2. Opening and closing mechanism; 21. Servo motor; 22. Drive shaft; 23. First bevel gear; 24. Second bevel gear; 25. Transmission screw; 26. Pushing sleeve; 27. Traction rod; 28. Baffle; 3. Disassembly and assembly mechanism; 31. Slot; 32. Positioning hole; 33. Fixing hole; 34. Fixing sleeve; 35. Fastening bolt. Detailed Implementation
[0016] 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.
[0017] Please see Figures 1-5 One embodiment provided by this utility model: A flight power mechanism for an unmanned aerial vehicle (UAV) includes a frame 11, with arms 12 inserted into the four corners of the frame 11. Rotor assemblies 13 are fixedly connected to the ends of the arms 12. Landing gears 14 are fixedly connected to the front and rear sides of the bottom of the frame 11. A battery box 15 is rotatably connected to the right side of the bottom of the frame 11. A battery 16 is housed inside the battery box 15. A transmission box 17 is fixedly connected to the top of the frame 11. A controller 18 is fixedly connected to the right side of the transmission box 17. The transmission housing 17 is equipped with an opening and closing mechanism 2, which includes a servo motor 21. The bottom of the servo motor 21 is fixedly connected to the top right side of the transmission housing 17. A transmission shaft 22 is fixedly connected to the middle of the bottom of the servo motor 21. The bottom end of the transmission shaft 22 passes through the transmission housing 17 and is fixedly connected to a first bevel gear 23. Through this design, the servo motor 21 drives the transmission shaft 22 and the first bevel gear 23 to rotate in a limited position. A second bevel gear 24 is meshed with the bottom of the first bevel gear 23. A transmission screw 25 is fixedly connected to the inner wall of the second bevel gear 24. The two ends of the transmission screw 25 are movably connected to the two sides of the inner wall of the transmission housing 17. Through this design, the first bevel gear 24 is fixedly connected to the bottom of the transmission housing 17. Gear 23 meshes and drives the second bevel gear 24 and the transmission screw 25 to rotate in a limited position. A push sleeve 26 is threaded on the left side of the outer wall of the transmission screw 25. A traction rod 27 is movably connected to the bottom of the outer wall of the push sleeve 26. The left end of the traction rod 27 is movably connected to the top left side of the battery box 15. Through this design, the transmission screw 25 drives the push sleeve 26 and the right end of the traction rod 27 to slide left and right, so that the left end of the traction rod 27 drives the battery box 15 and the battery 16 to rotate in a limited position. A baffle 28 is provided on the bottom left side of the frame 11. The left side of the battery 16 can be attached to the right side wall of the baffle 28. Through this design, the battery box 15 cooperates with the baffle 28 to limit the placement of the battery 16.
[0018] The frame 11 is provided with disassembly and assembly mechanisms 3 at its four corners. Each disassembly and assembly mechanism 3 includes a slot 31, which is located inside the four corners of the frame 11. The connector of the arm 12 can be inserted into the slot 31. The slot 31 is provided with a positioning hole 32. The connector of the arm 12 is provided with a fixing hole 33 corresponding to the positioning hole 32. Through this design, the rotor assembly 13 can be placed around the frame 11 via the arm 12. A fixing screw sleeve 34 is inserted above the positioning hole 32, and a fastening bolt 35 is inserted below the positioning hole 32. The upper thread of the outer wall of the fastening bolt 35 is inserted into the inner wall of the fixing screw sleeve 34. Through this design, the rotor assembly 13 on the frame 11 can be inserted.
[0019] Working principle: When the battery box 15 needs to be opened or closed, the servo motor 21 is first started by the controller 18. The servo motor 21 drives the transmission shaft 22 to rotate in a limited position. The transmission shaft 22 drives the first bevel gear 23 to rotate synchronously. The first bevel gear 23 meshes and drives the second bevel gear 24 to rotate. The second bevel gear 24 drives the transmission screw 25 to rotate in a limited position. The transmission screw 25 drives the push sleeve 26 to slide left and right. The push sleeve 26 drives the right end of the traction rod 27 to slide synchronously, so that the left end of the traction rod 27 drives the battery box 15 and the battery 16 to rotate in a limited position, thus realizing the opening and closing operation of the battery box 15.
[0020] When it is necessary to install the rotor assembly 13, first insert the arm 12 into the slots 31 at the four corners of the frame 11, then insert the fixing sleeve 34 into the positioning hole 32 and the fixing hole 33, and finally thread the fastening bolt 35 into the lower part of the fixing sleeve 34. This completes the installation operation of the rotor assembly 13.
[0021] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.
Claims
1. A flight power mechanism for an unmanned aerial vehicle (UAV), comprising a frame (11), characterized in that: Arms (12) are inserted into the four corners of the frame (11). A rotor assembly (13) is fixedly connected to the end of the arm (12). Landing gears (14) are fixedly connected to the front and rear sides of the bottom of the frame (11). A battery box (15) is rotatably connected to the right side of the bottom of the frame (11). A battery (16) is placed inside the battery box (15). A transmission box (17) is fixedly connected to the top of the frame (11). A controller (18) is fixedly connected to the right side of the transmission box (17). The transmission box (17) is provided with an opening and closing mechanism (2), which includes a servo motor (21). The bottom of the servo motor (21) is fixedly connected to the top right side of the transmission box (17). The frame (11) is provided with a disassembly and assembly mechanism (3) at the four corners. The disassembly and assembly mechanism (3) includes a slot (31), which is located inside the four corners of the frame (11).
2. The flight power mechanism for a UAV according to claim 1, characterized in that: The bottom center of the servo motor (21) is fixedly connected to a drive shaft (22), and the bottom end of the drive shaft (22) passes through the transmission box (17) and is fixedly connected to a first bevel gear (23).
3. The flight power mechanism for a UAV according to claim 2, characterized in that: The first bevel gear (23) is meshed with a second bevel gear (24) below it. The inner wall of the second bevel gear (24) is fixedly connected with a transmission screw (25). The two ends of the transmission screw (25) are movably connected to the inner wall of the transmission box (17).
4. The flight power mechanism of an unmanned aerial vehicle according to claim 3, characterized in that: The outer wall of the transmission screw (25) is threaded with a push screw sleeve (26) on the left side. The bottom of the outer wall of the push screw sleeve (26) is movably connected to a traction rod (27). The left end of the traction rod (27) is movably connected to the top left side of the battery box (15).
5. The flight power mechanism for a drone according to claim 1, characterized in that: The bottom left side of the frame (11) is provided with a baffle (28), and the left side of the battery (16) can be attached to the right side wall of the baffle (28).
6. The flight power mechanism of an unmanned aerial vehicle according to claim 1, characterized in that: The connector of the arm (12) can be inserted into the slot (31). The slot (31) has a positioning hole (32), and the connector of the arm (12) has a fixing hole (33) corresponding to the positioning hole (32).
7. The flight power mechanism for a drone according to claim 6, characterized in that: A fixing sleeve (34) is inserted above the positioning hole (32), and a fastening bolt (35) is inserted below the positioning hole (32). The upper part of the outer wall of the fastening bolt (35) is threaded onto the inner wall of the fixing sleeve (34).