Flapping hinge paddle clamp

Abstract

The invention discloses a flapping hinge propeller clamp, and relates to the technical field of unmanned aerial vehicles, in particular to a flapping hinge propeller clamp which is fixedly mounted on a propeller type unmanned aerial vehicle, is used for fixing propeller blades of the unmanned aerial vehicle, and comprises a flapping hinge mounting seat, a blade mounting seat, a combined shaft, a blade cover plate and a damping component, the flapping hinge mounting seat is composed of a seat part and two lug parts; through cooperative arrangement of the flapping hinge mounting seat, the paddle mounting seat and the combined shaft, the flapping hinge paddle clamp has the effect that the whole unmanned aerial vehicle is more stable by adjusting the rotation angle of the paddle, the paddle inclines by a certain amplitude after being influenced by lateral wind power, the paddle drives the paddle mounting seat to locally rotate around the combined shaft to generate angle change, and the unmanned aerial vehicle is more stable. The component force of the lift force generated by the blades counteracts the lateral wind power, and the influence of the lateral wind power is greatly reduced, so that the blades are more stable during rotation, and the purpose of preventing the unmanned aerial vehicle from inclining and shaking due to the influence of the wind power is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to a waving propeller clamp. Background Art

[0002] At present, drones use straight propellers and folding propellers. These two types of propellers are fixed to the motor through propeller clips. When the propeller rotates, the propeller disc plane is perpendicular to the motor shaft, and can achieve the highest efficiency when there is no wind. When flying in bad weather, the drone propeller is seriously affected by the wind, and the drone will tilt to resist the wind. In the case of energy loss, the drone will tilt and shake, making the drone flight unstable. At this time, the motor will generate more impulse to keep the drone flying smoothly and hovering, consuming more battery energy, speeding up the drone's power consumption, and then affecting its endurance and reducing its performance.

[0003] In the published Chinese patent application, the publication number is: CN209241300U, and the patent name is: A lower propeller clamp for an unmanned aerial vehicle, including a lower propeller clamp body, an upper outer surface of the lower propeller clamp body is provided with a mounting hole near the middle, and a circular groove is provided on one side of the mounting hole, an inner surface of the circular groove is provided with an air guide hole near the lower end, a first groove is provided near the middle of the lower outer surface of the lower end of the lower propeller clamp body, and a second groove and an annular groove are provided near both ends of the upper outer surface of the lower propeller clamp body, the second groove is located in the middle of the annular groove, and a circular groove is provided between the annular groove and the circular groove, a column hole is provided on the inner surface of the second groove near the lower end, a combined groove is provided on the lower outer surface of the lower propeller clamp body near both sides, and an air hole is provided on the lower outer surface of the lower propeller clamp body near the column hole, and a through hole is provided between two adjacent circular grooves. Although, by adopting the above technical solution, the force on the lower propeller clamp in the extension direction can be more uniform, making its structure more stable, it can reduce the resistance of the air to the blades while ensuring the stable flight of the UAV.

[0004] The prior art is to open holes in the propeller clamp to reduce the wind resistance of the lower propeller clamp body through the through holes, that is, to reduce the wind resistance, thereby reducing the wind resistance to the entire drone. However, the wind force on the blades is not effectively weakened, and the blades shake under the influence of the wind, causing the entire drone to tilt and shake. Summary of the invention

[0005] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a flapping blade clamp, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: a flapping hinge propeller clamp, which is fixedly mounted on a propeller-type UAV and is used to fix the propeller blades of the UAV, including a flapping hinge mounting seat, a blade mounting seat, a combined shaft, a blade cover plate, and a damping component. The flapping hinge mounting seat is composed of a seat portion and two ears, and the blade mounting seat is located between the two ears of the flapping hinge mounting seat. The combined shaft passes through the blade mounting seat and the two ears of the flapping hinge mounting seat, and the blade mounting seat is rotatably connected to the two ears of the flapping hinge mounting seat through the combined shaft; the flapping hinge mounting seat is fixedly mounted on the mounting shaft of the UAV's motor; the blade cover plate is provided with a plurality of blade fixing screws passing through it, and each of the blade fixing screws is The lower ends are all threadedly connected to the blade mounting seats; the blades are fixedly mounted on the blade mounting seats by blade covers and various blade fixing screws; the blades are tilted to a certain extent under the influence of the side wind force, and the blades drive the blade mounting seats to rotate around the combined axis to change the angle, and the component force of the lift generated by the blades offsets the side wind force; two piston cavities are provided on the flapping hinge mounting seat, and the damping component includes two piston assemblies, and the two piston assemblies are respectively arranged in the two piston cavities, and the two piston cavities are connected through the damping hole, and the two inclined side walls at the bottom of the blade mounting seat are respectively connected to the two piston assemblies in transmission; when the blade mounting seat rotates partially around the combined axis, the piston assembly is pressed down, and the piston assembly compresses the piston cavity, and the piston assembly buffers and reduces vibrations on the blade mounting seat.

[0007] Optionally, the swing hinge mounting seat is fixedly mounted on the mounting shaft of the motor of the drone by a plurality of mounting seat fixing screws.

[0008] Optionally, the combined shaft is composed of a first combined shaft and a second combined shaft, one end of the first combined shaft is threadedly connected to one end of the second combined shaft; the combined shaft is fixedly mounted to a swing hinge mounting seat by a hexagon socket set screw.

[0009] Optionally, an oil storage chamber is provided on the swing hinge mounting seat, the oil storage chamber is located between the two piston chambers, and the oil storage chamber is connected to the two piston chambers respectively through damping holes.

[0010] Optionally, two lower inclined side walls of the blade mounting seat are provided with sliding grooves, and the blade mounting seat is slidably connected to a sliding block via the sliding groove, and the sliding block is hinged to the piston assembly.

[0011] Optionally, the piston assembly includes a piston rod, a spring, and a plug, wherein the plug is slidably arranged in the piston cavity, one end of the piston rod is fixedly connected to the plug, and the other end of the piston rod is hinged to the sliding block, and the spring is sleeved on the piston rod, and the spring is located above the plug.

[0012] (III) Beneficial effects The present invention provides a swinging blade clamp, which has the following beneficial effects: 1. The waving hinge propeller clamp, through the coordinated arrangement of the waving hinge mounting seat, the blade mounting seat and the combined shaft, has the effect of making the drone as a whole more stable by adjusting the rotation angle of the blade. The blade is tilted to a certain extent after being affected by the side wind force, and the blade drives the blade mounting seat to rotate locally around the combined shaft to change the angle. The component force of the lift generated by the blade offsets the side wind force, greatly reducing the influence of the side wind force, so that the blade is more stable when rotating, achieving the purpose of preventing the drone from tilting and shaking due to the influence of wind force.

[0013] 2. This kind of flapping hinge propeller clamp, through the coordinated arrangement of the flapping hinge mounting seat, the blade mounting seat, the combined shaft, and the damping component, enables this kind of flapping hinge propeller clamp to have the effect of buffering the blade mounting seat and reducing the vibration of the blade. The blade vibrates after being affected by wind, and the vibration of the blade is not conducive to the overall stability of the drone. When the blade drives the blade mounting seat to rotate locally around the combined shaft and the angle changes, the blade mounting seat is buffered and vibration-reduced by the two piston assemblies in the damping component. While buffering and vibration-reducing the blade, the two piston assemblies can effectively ensure the rotation amplitude of the blade mounting seat, and can make the rotation amplitude of the blade mounting seat controllable, so as to avoid large-scale rotation of the blade mounting seat, thereby avoiding damage to the drone propeller due to large-scale rotation, thereby achieving the purpose of improving the stability of the drone blade and reducing the vibration intensity of the drone blade after being affected by wind. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a first embodiment of a flapping blade clamp of the present invention; Figure 2 It is a schematic cross-sectional structure diagram of a first embodiment of a flapping blade clamp of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of a flapping blade clamp and a blade fixedly installed according to the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of a second embodiment of a flapping blade clamp of the present invention; Figure 5 It is a schematic cross-sectional structural diagram of a second embodiment of a flapping blade clamp of the present invention; Figure 6 for Figure 4Enlarged structural diagram at A in the middle.

[0016] In the figure: 1. swing hinge mounting seat; 2. blade mounting seat; 3. blade cover plate; 4. first combined shaft; 5. second combined shaft; 6. hexagon socket set screw; 7. mounting seat fixing screw; 8. blade fixing screw; 9. motor; 10. blade; 11. slide groove; 12. sliding block; 13. piston rod; 14. spring; 15. plug; 16. first piston chamber; 17. oil storage chamber; 18. second piston chamber. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indications or implications.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0019] For example, see Figures 1 to 3 The present invention provides a technical solution: a flapping hinge propeller clamp, which is fixedly mounted on a propeller-type UAV and is used to fix the propeller blade 10 of the UAV. A flapping hinge propeller clamp comprises a flapping hinge mounting seat 1, a blade mounting seat 2, a combined shaft, a blade cover plate 3, and a damping component. The flapping hinge mounting seat 1 is composed of a seat and two ears. The blade mounting seat 2 is located between the two ears of the flapping hinge mounting seat 1. The combined shaft passes through the blade mounting seat 2 and the two ears of the flapping hinge mounting seat 1, and the blade mounting seat 2 is rotatably connected to the two ears of the flapping hinge mounting seat 1 through the combined shaft.

[0020] The swing hinge mounting seat 1 is fixedly mounted on the mounting shaft of the motor 9 of the drone. A plurality of blade fixing screws 8 are provided on the blade cover plate 3 and penetrate through the blade cover plate 3, and the lower end of each blade fixing screw 8 is threadedly connected to the blade mounting seat 2. The blade 10 is fixedly mounted on the blade mounting seat 2 through the blade cover plate 3 and each blade fixing screw 8.

[0021] The blade 10 is tilted to a certain extent under the influence of the side wind force, and the blade 10 drives the blade mounting seat 2 to rotate around the combined axis to change the angle, and the component force of the lift generated by the blade 10 offsets the side wind force.

[0022] Among them, after the motor 9 of the drone is started, it drives the swing hinge mounting seat 1 to rotate, and the swing hinge mounting seat 1 drives the blade mounting seat 2 to rotate through the combined shaft, and the blade mounting seat 2 drives the blade 10 to rotate, so that the drone can take off. After the blade 10 is affected by the side wind force, the blade 10 tilts as a whole, and the blade 10 drives the blade mounting seat 2 to rotate locally around the combined shaft. The blade mounting seat 2 changes its angle relative to the swing hinge mounting seat 1, and the component force of the lift generated by the blade 10 offsets the side wind force, thereby achieving the stability of the blade 10, and then the overall stability of the drone, preventing the drone from shaking and tilting.

[0023] Specifically, the swing hinge mounting seat 1 is fixedly mounted on the mounting shaft of the motor 9 of the drone by means of a plurality of mounting seat fixing screws 7 .

[0024] Among them, each mounting seat fixing screw 7 is used to fix the swing hinge mounting seat 1 on the mounting shaft (rotation shaft) of the motor 9 of the drone.

[0025] Specifically, the combined shaft is composed of a first combined shaft 4 and a second combined shaft 5, and one end of the first combined shaft 4 is threadedly connected to one end of the second combined shaft 5. The combined shaft is fixed to the swing hinge mounting seat 1 by a hexagon socket set screw 6. Please refer to Figure 2 .

[0026] The first combined shaft 4 and the second combined shaft 5 are used together to form the combined shaft body, and the ends of the two are threadedly connected, which can effectively prevent the combined shaft from being separated from the swing hinge mounting seat 1. The combined shaft is further fixed to the swing hinge mounting seat 1 by the hexagon socket set screw 6 to improve the stability of the combined shaft.

[0027] For example 2, please refer to Figures 3 to 6The difference between this embodiment and the first embodiment is mainly that a flap hinge clamp also includes a damping component. Two piston chambers are provided on the flap hinge mounting seat 1, and the damping component includes two piston assemblies. The two piston assemblies are respectively arranged in the two piston chambers, and the two piston chambers are connected through the damping hole. The two inclined side walls at the bottom of the blade mounting seat 2 are respectively connected to the two piston assemblies in a transmission manner. When the blade mounting seat 2 rotates partially around the combined shaft, the piston assembly is pressed down, and the piston assembly compresses the piston chamber, and the piston assembly buffers and reduces vibrations of the blade mounting seat 2. Oil is contained in the piston chamber.

[0028] Among them, the blade 10 vibrates after being affected by wind, and the vibration of the blade 10 is not conducive to the overall stability of the drone. The two piston chambers are the first piston chamber 16 and the second piston chamber 18, and the two piston assemblies are respectively located in the first piston chamber 16 and the second piston chamber 18. When the blade mount 2 partially rotates around the combined shaft, the piston assembly is pressed down, and the piston assembly compresses the piston chamber. The oil in the piston chamber flows to the other piston chamber through the damping hole. The damping force generated during this period can effectively reduce the vibration of the blade mount 2, and the piston assembly buffers and reduces vibration of the blade mount 2.

[0029] When the blade 10 drives the blade mounting seat 2 to partially rotate around the combined axis to change its angle, the blade mounting seat 2 is buffered and reduced in vibration by the two piston assemblies in the damping component, thereby achieving buffering and vibration reduction of the blade 10 .

[0030] While buffering and reducing vibration of the blade 10, the two piston assemblies can effectively ensure that the rotation amplitude of the blade mounting seat 2 is within a reasonable range, and can make the rotation amplitude of the blade mounting seat 2 controllable, thereby preventing the blade mounting seat 2 from rotating sharply, thereby preventing the UAV propeller from being damaged due to sharp rotation, thereby achieving the purpose of improving the stability of the UAV blade 10 and reducing the vibration intensity of the UAV blade 10 after being affected by wind.

[0031] Specifically, an oil storage chamber 17 is provided on the swing hinge mounting seat 1. The oil storage chamber 17 is located between the two piston chambers, and the oil storage chamber 17 is connected to the two piston chambers through the damping holes. The two piston chambers are the first piston chamber 16 and the second piston chamber 18. The first piston chamber 16 and the second piston chamber 18 are both connected to the oil storage chamber 17 through the damping holes.

[0032] When one piston assembly is pressed down, the other piston assembly is pulled, and the oil flows from one piston chamber through the damping hole to the other piston chamber.

[0033] Specifically, two inclined side walls at the bottom of the blade mounting seat 2 are provided with a slide groove 11, and the blade mounting seat 2 is slidably connected to a sliding block 12 through the slide groove 11, and the sliding block 12 is hinged to the piston assembly. The piston assembly includes a piston rod 13, a spring 14, and a plug 15, and the plug 15 is slidably arranged in the piston cavity, one end of the piston rod 13 is fixedly connected or hinged to the plug 15, and the other end of the piston rod 13 is hinged to the sliding block 12, and the spring 14 is sleeved on the piston rod 13, and the spring 14 is located above the plug 15.

[0034] When the blade mounting seat 2 rotates partially around the combined shaft, a piston assembly is pushed downward in a piston chamber by a sliding block 12. At this time, while the sliding block 12 slides in the slide groove 11, the sliding block 12 applies a thrust downward, and the sliding block 12 pushes the piston rod 13 downward. The piston rod 13 pushes the plug 15 downward in the piston chamber, and the oil flows from the piston chamber to another piston chamber.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flapping blade clamp, which is fixedly mounted on a propeller-type UAV and is used to fix the propeller blades (10) of the UAV, characterized in that: The invention comprises a flapping hinge mounting seat (1), a blade mounting seat (2), a combined shaft, a blade cover plate (3), and a damping component, wherein the flapping hinge mounting seat (1) is composed of a seat portion and two ears, the blade mounting seat (2) is located between the two ears of the flapping hinge mounting seat (1), the combined shaft penetrates the blade mounting seat (2) and the two ears of the flapping hinge mounting seat (1), and the blade mounting seat (2) is rotatably connected to the two ears of the flapping hinge mounting seat (1) via the combined shaft; The swing hinge mounting seat (1) is fixedly mounted on the mounting shaft of the motor 9 of the drone; the blade cover plate (3) is provided with a plurality of blade fixing screws (8) penetrating therethrough, and the lower end of each of the blade fixing screws (8) is threadedly connected to the blade mounting seat (2); the blade (10) is fixedly mounted on the blade mounting seat (2) through the blade cover plate (3) and each of the blade fixing screws (8); The blade (10) is tilted to a certain extent under the influence of the side wind force, and the blade (10) drives the blade mounting seat (2) to rotate around the combined axis to change the angle, and the component force of the lift generated by the blade (10) offsets the side wind force; The flap hinge mounting seat (1) is provided with two piston chambers, the damping component comprises two piston assemblies, the two piston assemblies are respectively arranged in the two piston chambers, the two piston chambers are connected via a damping hole, and the two inclined side walls at the bottom of the blade mounting seat (2) are respectively in driving connection with the two piston assemblies; When the blade mounting seat (2) partially rotates around the combined shaft, the piston assembly is pressed downward, the piston assembly compresses the piston cavity, and the piston assembly performs buffering and vibration reduction on the blade mounting seat (2).

2. The flapping blade clamp according to claim 1, characterized in that: The swing hinge mounting seat (1) is fixedly mounted on the mounting shaft of the motor (9) of the drone via a plurality of mounting seat fixing screws (7).

3. The flapping blade clamp according to claim 1, characterized in that: The combined shaft is composed of a first combined shaft (4) and a second combined shaft (5); one end of the first combined shaft (4) is threadedly connected to one end of the second combined shaft (5); the combined shaft is fixedly mounted to the swing hinge mounting seat (1) via a hexagon socket set screw (6).

4. The flapping blade clamp according to claim 1, characterized in that: An oil storage chamber (17) is provided on the swing hinge mounting seat (1), the oil storage chamber (17) is located between the two piston chambers, and the oil storage chamber (17) is connected to the two piston chambers respectively through damping holes.

5. The flapping blade clamp according to claim 4, characterized in that: Slide grooves (11) are provided on the two lower inclined side walls of the blade mounting seat (2), and the blade mounting seat (2) is slidably connected to a sliding block (12) via the sliding grooves (11), and the sliding block (12) is hinged to the piston assembly.

6. The flapping blade clamp according to claim 5, characterized in that: The piston assembly comprises a piston rod (13), a spring (14), and a plug (15); the plug (15) is slidably arranged in the piston cavity; one end of the piston rod (13) is fixedly connected to the plug (15); the other end of the piston rod (13) is hinged to the sliding block (12); the spring (14) is sleeved on the piston rod (13), and the spring (14) is located above the plug (15).

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