Foldable propeller structure and quadcopter

Abstract

This utility model discloses a foldable propeller structure and a quadcopter, specifically relating to the field of unmanned aerial vehicle (UAV) technology. The foldable propeller structure includes a housing with four sets of rotating components on its outer side. A fixed box is fixed to the top of the housing, and a shielding component is located on the top of the fixed box to protect the internal components. An installation component is located inside the fixed box, with an elastic component on it. A positioning limiting component is located on the elastic component, and a fixed seat is located on the elastic component. A rotating shaft is connected to the inner side of the fixed seat with damping rotation, and a baffle is fixed to the outer side of the rotating shaft. By setting the baffle, this utility model effectively limits the rotation arm after folding and storing, preventing accidental opening due to vibration or external force. This improves the portability and transportation safety of the UAV, prevents the propeller blades from loosening and colliding during movement, reduces the risk of component wear, and makes the stored state more stable, facilitating rapid unfolding.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and more specifically, to a foldable propeller structure and a quadcopter. Background Technology

[0002] Quadcopter drones are unmanned aerial vehicles that use four rotors to provide lift and attitude control. They consist of motors, flight control systems, batteries, and sensors. By adjusting the speed of each rotor, they can achieve actions such as takeoff and landing, turning, pitching, and rolling. They have vertical takeoff and landing, hovering, and flexible maneuverability, and are widely used in aerial photography, surveying, inspection, and agricultural plant protection. They have both consumer and industrial applications. Due to their simple structure and convenient operation, they have become the mainstream type of multi-rotor drones. Some high-end models also support autonomous cruise, obstacle avoidance, and payload delivery. Technological development is driving them to evolve towards intelligence and multi-functionality.

[0003] Existing quadcopters use a rotating arm to fold and store their propellers, improving portability and storage efficiency. However, due to the lack of an effective positioning structure, the rotating arm is prone to loosening or even accidental opening during transportation or carrying due to external forces or vibrations. This can not only cause damage to the propeller blades by collision, but also affect the rapid deployment and use of the drone, increasing operational complexity. Especially when carried in a backpack or transported by vehicle, a loose rotating arm may rub against other components, affecting structural stability and even reducing flight safety.

[0004] In summary, to improve the portability and transport safety of quadcopters, it is necessary to address the lack of reliable positioning of the rotating arm in the folded state, ensuring its stability during storage or movement, preventing accidental opening or loosening, thereby reducing component wear and improving ease of use. Utility Model Content

[0005] The foldable propeller structure and quadcopter provided by this utility model aim to solve the following problem: In the use of existing quadcopters, the propeller can be folded and stored through the rotating arm, but there is a lack of positioning structure for the rotating arm, which leads to the problem that the rotating arm is easy to loosen and open during folding and transportation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a foldable propeller structure, including a housing, four sets of rotating components on the outer side of the housing, a fixed box fixed to the top of the housing, a shielding component on the top of the fixed box, the shielding component being used to protect the internal parts of the fixed box, an installation component inside the fixed box, an elastic component on the installation component, a positioning limiting component on the elastic component, a fixed seat on the elastic component, a rotating shaft connected to the inner side of the fixed seat with damping, and a baffle fixed to the outer side of the rotating shaft.

[0007] In a preferred embodiment, the rotating assembly includes four connecting arms fixed to the outside of the housing and a rotating arm disposed inside the connecting arms, the connecting arms being rotatably connected to the rotating arms.

[0008] In a preferred embodiment, the shielding assembly includes a top cover disposed on the top of the fixing box, the outer side of the top cover being configured with rounded corners, and the top cover being fixedly connected to the fixing box by screws.

[0009] In a preferred embodiment, the mounting assembly includes two mounting bases disposed inside the mounting box and fixing strips fixed to both sides of the mounting bases, the fixing strips being fixedly connected to the mounting box by bolts.

[0010] In a preferred embodiment, the elastic component includes a sleeve fixed to the top of the mounting base, a slide rod slidably connected to the inside of the sleeve, and a spring fixed to the end of the sleeve. One end of the spring is fixedly connected to the slide rod, and the other end of the spring is fixedly connected to the inside of the sleeve. When the slide rod slides, it causes the spring to extend and retract. The slide rod is fixedly connected to the corresponding mounting base.

[0011] In a preferred embodiment, the limiting component includes a limiting block fixed to the inner wall of the sleeve and a limiting groove formed on the outer side of the slide rod, wherein the limiting block and the limiting groove are slidably connected.

[0012] A quadcopter includes a foldable propeller structure as described above, and further includes a gear drive module disposed at the end of a rotating arm and a propeller body disposed on the gear drive module, the gear drive module being used to drive the propeller body to rotate.

[0013] The beneficial effects of this utility model are as follows: This invention features a baffle that effectively limits the rotation arm after folding and storage, preventing accidental opening due to vibration or external force. This design significantly improves the portability and transport safety of the drone, prevents the propellers from loosening and colliding during movement, and reduces the risk of component wear. At the same time, the baffle structure ensures a more stable storage state, facilitating quick unfolding and use, and improving operational efficiency. Furthermore, this solution achieves reliable fixation without complex adjustments, reducing maintenance costs. It is suitable for various foldable quadcopters, balancing practicality and durability, and optimizing the user experience. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the fixing box of this utility model.

[0016] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the fixing box of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the slide bar of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the propeller body of this utility model.

[0019] The attached diagram is labeled as follows: 1. Housing; 21. Connecting arm; 22. Rotating arm; 3. Gear transmission module; 4. Propeller body; 5. Fixing box; 61. Top cover; 71. Mounting base; 72. Fixing strip; 81. Sleeve; 82. Slide rod; 83. Spring; 91. Limiting block; 92. Limiting groove; 10. Fixing base; 11. Rotating shaft; 12. Baffle. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Refer to the instruction manual appendix Figures 1 to 5 The foldable propeller structure includes a housing 1, four sets of rotating components on the outside of the housing 1, a fixed box 5 fixed on the top of the housing 1, a shielding component on the top of the fixed box 5 to protect the internal parts of the fixed box 5, an installation component inside the fixed box 5, an elastic component on the installation component, a positioning limit component on the elastic component, a fixed seat 10 on the elastic component, a rotating shaft 11 connected to the inner side of the fixed seat 10 with damping, and a baffle 12 fixed to the outer side of the rotating shaft 11.

[0022] It should be noted that after the rotating component is retracted, the elastic component is pulled outward, causing the fixed seat 10 to drive the rotating shaft 11 and the baffle 12 past the rotating component. Then the baffle 12 is flipped downward, releasing the elastic component. The elastic component is reset under the restriction of the limiting component, which drives the baffle 12 to clamp the rotating component, thereby achieving the positioning of the rotating component and preventing it from coming loose.

[0023] Refer to the instruction manual appendix Figure 1 The rotating assembly includes four connecting arms 21 fixed on the outside of the housing 1 and a rotating arm 22 disposed on the inside of the connecting arms 21, with the connecting arms 21 and the rotating arm 22 rotatably connected.

[0024] It should be noted that the rotating arm 22 and the connecting arm 21 are connected by a hinge, so that the rotating arm 22 can rotate around the hinge point.

[0025] Refer to the instruction manual appendix Figure 2The shielding assembly includes a top cover 61 disposed on the top of the fixing box 5. The outer side of the top cover 61 is configured with a rounded corner structure. The top cover 61 is fixedly connected to the fixing box 5 by screws.

[0026] It should be noted that the top cover 61 can cover the opening at the top of the fixing box 5, and its rounded corner design can reduce air friction.

[0027] Refer to the instruction manual appendix Figure 3 and Figure 4 The mounting assembly includes two mounting bases 71 disposed inside the mounting box 5 and fixing strips 72 fixed on both sides of the mounting bases 71. The fixing strips 72 are fixedly connected to the mounting box 5 by bolts.

[0028] It should be noted that tightening the bolts connects the fixing strip 72 to the fixing box 5, thereby fixing the mounting base 71 in place.

[0029] Refer to the instruction manual appendix Figure 3 and Figure 4 The elastic component includes a sleeve 81 fixed to the top of the mounting base 71, a slide rod 82 slidably connected to the inside of the sleeve 81, and a spring 83 fixed to the end of the sleeve 81. One end of the spring 83 is fixedly connected to the slide rod 82, and the other end of the spring 83 is fixedly connected to the inside of the sleeve 81. When the slide rod 82 slides, it drives the spring 83 to extend and retract. The slide rod 82 is fixedly connected to the corresponding fixed base 10.

[0030] It should be noted that the sleeve 81 and the mounting base 71 are rigidly connected. When the slide rod 82 is pulled, the spring 83 is stretched. After the slide rod 82 is released, the spring 83 retracts, which in turn resets the slide rod 82.

[0031] Refer to the instruction manual appendix Figure 3 and Figure 4 The limiting component includes a limiting block 91 fixed to the inner wall of the sleeve 81 and a limiting groove 92 opened on the outer side of the slide rod 82. The limiting block 91 and the limiting groove 92 are slidably connected.

[0032] It should be noted that when the slide bar 82 moves, the limiting groove 92 on its surface slides relative to the surface of the limiting block 91, thereby limiting the slide bar 82.

[0033] Refer to the instruction manual appendix Figure 5 A quadcopter includes a foldable propeller structure as described above, and further includes a gear transmission module 3 disposed at the end of a rotating arm 22 and a propeller body 4 disposed on the gear transmission module 3, wherein the gear transmission module 3 is used to drive the propeller body 4 to rotate.

[0034] It should be noted that the gear transmission module 3 consists of a motor and multiple drive gear assemblies. When the motor is running, it drives the propeller body 4 to rotate through the meshing transmission of multiple gears.

[0035] Working principle: When the fixed seat 10 is pulled outward, the slide rod 82 slides in the sleeve 81 and stretches the spring 83. The limit block 91 moves along the limit groove 92 of the slide rod 82 to control the stroke. At this time, the rotating shaft 11 drives the baffle 12 to move upward past the rotating arm 22. Manually flip the baffle 12 downward to a horizontal state. After the fixed seat 10 is released, the spring 83 contracts and drives the slide rod 82 to reset, so that the baffle 12 tightly presses against the surface of the rotating arm 22. The baffle 12 clamps the rotating arm 22 by friction, preventing it from unfolding accidentally. If vibration occurs during transportation, the cooperation between the limit groove 92 and the limit block 91 can prevent the slide rod 82 from dislodging. The spring 83 continuously provides downward pressure to maintain the locking effect of the baffle 12. When unfolding for use, pull the fixed seat 10 in the opposite direction to release the baffle 12 from the rotating arm 22.

[0036] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A foldable propeller structure, characterized in that: Includes a housing (1), four sets of rotating components are provided on the outside of the housing (1), a fixed box (5) is fixed on the top of the housing (1), a shielding component is provided on the top of the fixed box (5), the shielding component is used to protect the internal parts of the fixed box (5), an installation component is provided inside the fixed box (5), an elastic component is provided on the installation component, a limiting component for positioning is provided on the elastic component, a fixed seat (10) is provided on the elastic component, a rotating shaft (11) is connected to the inner side of the fixed seat (10) with damping rotation, and a baffle (12) is fixed on the outer side of the rotating shaft (11).

2. The foldable propeller structure according to claim 1, characterized in that: The rotating assembly includes four connecting arms (21) fixed on the outside of the housing (1) and a rotating arm (22) disposed on the inside of the connecting arms (21), the connecting arms (21) and the rotating arm (22) being rotatably connected.

3. The foldable propeller structure according to claim 1, characterized in that: The shielding assembly includes a top cover (61) disposed on the top of the fixed box (5), the outer side of the top cover (61) is configured with a rounded corner structure, and the top cover (61) is fixedly connected to the fixed box (5) by screws.

4. The foldable propeller structure according to claim 1, characterized in that: The mounting assembly includes two mounting bases (71) disposed inside the mounting box (5) and fixing strips (72) fixed on both sides of the mounting bases (71), the fixing strips (72) being fixedly connected to the mounting box (5) by bolts.

5. The foldable propeller structure according to claim 4, characterized in that: The elastic component includes a sleeve (81) fixed to the top of the mounting base (71), a slide rod (82) slidably connected to the inside of the sleeve (81), and a spring (83) fixed to the end of the sleeve (81). One end of the spring (83) is fixedly connected to the slide rod (82), and the other end of the spring (83) is fixedly connected to the inside of the sleeve (81). When the slide rod (82) slides, it drives the spring (83) to extend and retract. The slide rod (82) is fixedly connected to the corresponding fixed base (10).

6. The foldable propeller structure according to claim 5, characterized in that: The limiting assembly includes a limiting block (91) fixed to the inner wall of the sleeve (81) and a limiting groove (92) opened on the outer side of the slide rod (82), with the limiting block (91) and the limiting groove (92) slidably connected.

7. A quadcopter, characterized in that... The foldable propeller structure according to any one of claims 1-6 further includes a gear transmission module (3) disposed at the end of the rotating arm (22) and a propeller body (4) disposed on the gear transmission module (3), wherein the gear transmission module (3) is used to drive the propeller body (4) to rotate.

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