Rack structure of unmanned aerial vehicle

Abstract

The utility model relates to the field of unmanned aerial vehicles, and discloses a frame structure of an unmanned aerial vehicle, which comprises a shell and four wing arms, four corners of the shell are fixedly connected with mounting racks, gears are rotatably connected in the mounting racks, the shell is provided with through holes matched with the gears, the wing arms are fixedly connected to one sides of the gears respectively, and the wing arms are fixedly connected to the other sides of the gears respectively. Adjusting sliding plates which are correspondingly arranged on the two sides are connected into the machine shell in an interactive mode, and the two ends of each adjusting sliding plate are fixedly connected with adjusting racks meshed with the gears. A rhombic cam rotating disc is rotationally connected between the adjusting sliding plates on the two sides in the machine shell, an adjusting knob for driving the rhombic cam rotating disc to rotate is rotationally connected to the bottom face of the machine shell, and a fixing mechanism for fixing the adjusting knob is fixedly connected to the bottom face of the machine shell. Compared with the prior art, the folding wing arm has the advantages that the wing arm can be folded and stored, the occupied space is reduced, and the folding wing arm is convenient to carry.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to a frame structure for an unmanned aerial vehicle (UAV). Background Technology

[0002] A quadcopter drone is a common type of unmanned aerial vehicle (UAV) with four propellers. Based on sensor data, this type of UAV uses a flight control board to output four PWM (Pulse Width Modulation) waves to control an electronic speed controller, which in turn controls the rotation of the brushless motors to achieve flight. Due to their small size and ease of use, quadcopter drones have been widely used in recent years in fields such as military, photography, transportation, medical assistance, reconnaissance, and surveillance.

[0003] However, existing drones are all fixed structures. Because they have four propellers, the wings at the four corners of the frame take up a lot of space, making them inconvenient to carry and store. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned technical difficulties and provide a frame structure for a drone that can fold and store the wings, reduce space occupation, and make it easy to carry.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a frame structure for an unmanned aerial vehicle (UAV), including a housing and four wing arms. Mounting brackets are fixedly connected to the four corners of the housing, and gears are rotatably connected within each mounting bracket. The housing has through holes that mate with the gears. Each wing arm is fixedly connected to one side of a gear. Adjustment slides are interactively connected to both sides of the housing, and adjustment racks that mesh with the gears are fixedly connected to both ends of each adjustment slide. A rhomboid cam turntable is rotatably connected between the two adjustment slides inside the housing. An adjustment knob for driving the rhomboid cam turntable is rotatably connected to the bottom surface of the housing, and a fixing mechanism for fixing the adjustment knob is fixedly connected to the bottom surface of the housing.

[0006] As an improvement, the fixing mechanism includes a first fixing bolt threaded onto the adjusting knob, and the bottom surface of the housing is provided with a first fixing screw hole that mates with the first fixing bolt.

[0007] As an improvement, a folding groove is provided on one side of the wing arm, and a fixed arm is hinged in the folding groove. Fixed brackets are fixedly connected to the four corners of the fuselage, and a second fixing bolt is threaded onto each fixed bracket. A second fixing screw hole that mates with the second fixing bolt is provided at the other end of the fixed arm.

[0008] As an improvement, movable sleeves are fixedly connected to both sides of the inner casing, and a movable column that slides into the movable sleeve is fixedly connected to one end of the adjusting slide plate. A return spring that cooperates with the movable column is fixedly connected inside the movable sleeve.

[0009] As an improvement, a third fixing bolt is threaded onto the bottom surface of the housing, and a through fixing hole is provided on the movable column.

[0010] As an improvement, the adjusting slide plate is provided with a limiting protrusion at one end, and both ends of the rhomboid cam turntable are provided with limiting grooves that cooperate with the limiting protrusion and are arranged in a centrally symmetrical manner.

[0011] The advantages of this invention compared to the prior art are as follows: the diamond-shaped cam turntable is driven to rotate by adjusting the knob. During the rotation of the diamond-shaped turntable, it abuts against the ends of the two adjustment slide plates, pushing the two adjustment slide plates away from each other. The two adjustment slide plates drive the corresponding adjustment racks to slide, and the adjustment racks drive the corresponding gears to rotate. The gears drive the wing arms to swing close to the outer wall of the fuselage, which greatly reduces the space occupied and makes it easy to carry. Attached Figure Description

[0012] Figure 1 This is an exploded view of the frame structure of a drone according to this utility model.

[0013] Figure 2 This is a three-dimensional view of the frame structure of an unmanned aerial vehicle (UAV) according to this utility model.

[0014] Figure 3 This is a cross-sectional view of the frame structure of a drone according to this utility model. Figure 1 .

[0015] Figure 4 This is a cross-sectional view of the frame structure of a drone according to this utility model. Figure 2 .

[0016] Figure 5 This is a bottom structural diagram of the frame structure of a drone according to this utility model.

[0017] Figure 6 This is a schematic diagram of the rhomboid cam turntable structure of the frame of a drone according to this utility model.

[0018] As shown in the figure: 1. Housing; 2. Mounting bracket; 3. Through hole; 4. Gear; 5. Wing arm; 6. Adjusting rack; 7. Folding groove; 8. Fixed arm; 9. Diamond cam turntable; 10. Movable block; 11. Return spring; 12. Adjusting knob; 13. First fixing bolt; 14. Third fixing bolt; 15. Fixing hole; 16. Limiting protrusion; 17. Limiting groove; 18. Fixing bracket; 19. Second fixing bolt; 20. Movable sleeve; 21. Adjusting slide plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 6 As shown, a frame structure for a drone includes a housing 1 and four wing arms 5. Mounting brackets 2 are fixedly connected to the four corners of the housing 1. Gears 4 are rotatably connected within each mounting bracket 2. The housing 1 has through holes 3 that mate with the gears 4. Each wing arm 5 is fixedly connected to one side of a gear 4. Adjustable sliding plates 21 are interactively connected to both sides of the housing 1. Movable sleeves 20 are fixedly connected to both sides of the housing 1. A movable column that slides into the movable sleeve 20 is fixedly connected to one end of each adjustable sliding plate 21. A return spring 11 that mates with the movable column is fixedly connected within the movable sleeve 20. A third fixing bolt 14 is threaded onto the bottom surface of the housing 1. A through fixing hole 15 is provided on the movable column. Adjustable racks 6 that mesh with the gears 4 are fixedly connected to both ends of each adjustable sliding plate 21.

[0021] A rhomboid cam turntable 9 is rotatably connected between the two adjusting slide plates 21 inside the housing 1. A limiting protrusion 16 is provided at one end of each adjusting slide plate 21. Both ends of the rhomboid cam turntable 9 are provided with limiting grooves 17 that cooperate with the limiting protrusions 16 and are arranged in a centrally symmetrical manner. An adjusting knob 12 that drives the rhomboid cam turntable 9 to rotate is rotatably connected to the bottom surface of the housing 1. A fixing mechanism for fixing the adjusting knob 12 is fixedly connected to the bottom surface of the housing 1. The fixing mechanism includes a first fixing bolt 13 that is threaded onto the adjusting knob 12. A first fixing screw hole that cooperates with the first fixing bolt 13 is provided on the bottom surface of the housing 1.

[0022] The wing arm 5 has a folding groove 7 on one side, and a fixed arm 8 is hinged in the folding groove 7. The four corners of the housing 1 are fixedly connected to a fixed frame 18, and a second fixing bolt 19 is threaded onto each fixed frame 18. The other end of the fixed arm 8 is provided with a second fixing screw hole that mates with the second fixing bolt 19.

[0023] In practical use, when it is necessary to fold the four wing arms 5, the knob is turned to drive the diamond cam turntable 9 to rotate. When the protruding ends on both sides of the diamond cam turntable 9 contact the adjusting slide plates 21 on both sides, the adjusting slide plates 21 on both sides are pushed away from each other until the limiting protrusions 16 on both sides are deeply inserted into the cam grooves on both sides. At this time, the adjusting slide plates 21 on both sides move to the farthest distance. The adjusting slide plates 21 on both sides push the movable column to slide into the movable sleeve 20, compressing the return spring 11 and causing it to deform. While the adjusting slide plates 21 slide, they drive the adjusting racks 6 on both sides to slide. The adjusting racks 6 on both sides drive the corresponding gears 4 to rotate. The gears 4 drive the corresponding wing arms 5 to swing towards the side closer to the housing 1, so that all four wing arms 5 are folded to one side of the housing 1, greatly reducing the space occupied and making it convenient to carry.

[0024] When the device needs to be used, the adjustment knob 12 is rotated in the opposite direction. At the same time, the restoring force of the return spring 11 pushes the adjustment slide plate 21 closer to each other to reset, so that the four wing arms 5 swing to the initial open state. The first fixing bolt 13 is screwed into the first fixing screw hole to fix the adjustment knob 12. At the same time, the two third fixing bolts 14 on the bottom surface of the housing 1 are screwed so that one end of the third fixing bolts 14 on both sides is inserted into the fixing hole 15 to further lock the movable block 10. The four fixing arms 8 extend out of the folding groove 7 of the wing arms 5. The second fixing bolt 19 is screwed into the second fixing screw hole on the fixing arm 8. The wing arms 5 are fixed by multiple fixing mechanisms, which greatly improves the stability of the wing arms 5.

[0025] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A frame structure for an unmanned aerial vehicle (UAV), comprising a housing (1) and four wing arms (5), characterized in that: The housing (1) is fixedly connected to four corners with mounting brackets (2), and gears (4) are rotatably connected inside each mounting bracket (2). The housing (1) is provided with through holes (3) that cooperate with the gears (4). The wing arms (5) are fixedly connected to one side of the gears (4). Adjustment slides (21) are interactively connected to both sides of the housing (1). Adjustment racks (6) that mesh with the gears (4) are fixedly connected to both ends of the adjustment slides (21). A rhomboid cam turntable (9) is rotatably connected between the two adjustment slide plates (21) inside the housing (1). An adjustment knob (12) for driving the rhomboid cam turntable (9) to rotate is rotatably connected to the bottom surface of the housing (1). A fixing mechanism for fixing the adjustment knob (12) is fixedly connected to the bottom surface of the housing (1).

2. The frame structure of a UAV according to claim 1, characterized in that: The fixing mechanism includes a first fixing bolt (13) threaded onto the adjusting knob (12), and the bottom surface of the housing (1) is provided with a first fixing screw hole that mates with the first fixing bolt (13).

3. The frame structure of a UAV according to claim 1 or 2, characterized in that: The wing arm (5) has a folding groove (7) on one side, and a fixed arm (8) is hinged in the folding groove (7). The four corners of the housing (1) are fixedly connected to a fixing frame (18), and a second fixing bolt (19) is threaded onto each fixing frame (18). The other end of the fixing arm (8) is provided with a second fixing screw hole that mates with the second fixing bolt (19).

4. The frame structure of a UAV according to claim 1, characterized in that: Movable sleeves (20) are fixedly connected to both sides of the housing (1). One end of the adjusting slide plate (21) is fixedly connected to a movable column that is slidably inserted into the movable sleeve (20). A return spring (11) that cooperates with the movable column is fixedly connected inside the movable sleeve (20).

5. The frame structure of a UAV according to claim 4, characterized in that: The bottom surface of the housing (1) is threaded with a third fixing bolt (14), and the movable column is provided with a through fixing hole (15).

6. The frame structure of a UAV according to claim 1, characterized in that: The adjusting slide plate (21) is provided with a limiting protrusion (16) at one end, and the rhomboid cam turntable (9) is provided with limiting grooves (17) at both ends that cooperate with the limiting protrusion (16) and are arranged in a centrally symmetrical manner.

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