Paddle protection device for unmanned aerial vehicle falling

Abstract

The utility model discloses a blade protection device for unmanned aerial vehicle falling. The blade protection device comprises a side wing and a blade protection mechanism arranged at the end of the side wing. The blade protection mechanism comprises a safety ring, a U-shaped mounting piece and a safety air bag; a containing groove is formed in the safety ring, and the safety air bag is arranged in the containing groove. When the unmanned aerial vehicle detects a falling risk, a protection mechanism is rapidly started, the safety air bag pops up from the safety ring to form a buffer area, the fuselage is effectively protected against direct impact, and due to the fact that the safety ring is located around the blades, protection of the blades and the vehicle arms is more emphasized, and the weak position of the unmanned aerial vehicle is covered; the blade protection mechanism is designed to be a part of the side wings, modular installation and fixation are achieved through the sinking grooves, the screw holes and the U-shaped installation pieces, the extra size of the unmanned aerial vehicle is not increased, the flight performance is guaranteed, installation and detachment are easy, operation can be rapidly conducted when the blade protection structure needs to be replaced or maintained, and the maintenance efficiency is improved. The method has the advantage of simple operation mode.

Description

Technical Field

[0001] The utility model relates to the technical field of UAV safety protection, in particular to a UAV falling blade protection device. Background Art

[0002] Small UAVs are widely used in fields such as aerial photography, surveying, agriculture, and rescue. Generally, they include a fuselage, arms, and blades provided on the arms. The fuselage, as the main structure of the UAV, undertakes the function of carrying various electronic devices; the arms connect the fuselage and the blades and are the key support structures for the UAV to fly; the blades are the power source for the UAV to fly.

[0003] During the operation of the UAV, due to operational errors, environmental factors, or other unforeseen reasons, the UAV may fall. During the fall, the blades are directly exposed and are extremely vulnerable to impact and damage, thus affecting the normal flight and service life of the UAV. To reduce the damage rate of the blades during the fall, the prior art generally adopts the method of setting a protective ring around the blades. The protective ring is a circular ring structure around the blades and can, to a certain extent, reduce the direct collision between the blades and the ground or other objects. However, this protective ring still cannot protect the blades well when the UAV falls, especially during the high-speed rotation process, and the protective effect of the protective ring is limited.

[0004] To solve the above technical problems, those skilled in the art have proposed an airbag protection device to achieve the protection of the UAV. However, most of the current airbag protection devices are set on the fuselage and can play a buffering role when the UAV falls, reducing the risk of fuselage damage. However, this protection method cannot take into account the protection of the blades, and compared with the fuselage, the damage rate of the blades is greater. Summary of the Invention

[0005] To solve the above technical problems, the utility model provides a UAV falling blade protection device. To provide a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary part is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the subsequent detailed description.

[0006] The utility model adopts the following technical solutions:

[0007] Provide a UAV falling blade protection device, including: a side wing and a blade protection mechanism arranged at the end of the side wing;

[0008] Sinking grooves are opened on both sides of the side wing, and screw holes are opened at the bottom of the sinking grooves;

[0009] The blade protection mechanism includes: a safety ring, a U-shaped mounting member, and a safety airbag; a notch is formed on the safety ring to form two suspension ends, one side plate of the U-shaped mounting member is embedded in the sink and connected to the side wing by screws, and the other side plate is connected to the suspension end of the safety ring;

[0010] A receiving groove is provided on the safety ring, and the safety airbag is arranged in the receiving groove.

[0011] Further, the U-shaped mounting member includes: an arc-shaped plate and two side plates arranged at both ends of the arc-shaped plate. A screw hole is formed on the side plate embedded in the sink, and a through hole is formed on the other side plate at a position corresponding to the sink.

[0012] Further, the blade protection mechanism further includes: a buffer spring and two positioning rings respectively arranged at both ends of the buffer spring; the buffer spring is arranged in the U-shaped mounting member, one of the positioning rings is arranged at the slot hole of the sink, and the other positioning ring is arranged at the orifice of the through hole.

[0013] Further, the side wing is a hollow structure in the shape of a truncated cone, the shell wall of the side wing bulges outward to form a mounting socket, both sides of the mounting socket are recessed inward to form the sink, a column groove is arranged at the bottom of the sink, and internal threads are formed on the groove wall of the column groove.

[0014] Further, the interior of the side wing is provided with a first reinforcing rib and a second reinforcing rib; the first reinforcing rib is connected to the column groove and the sink; the second reinforcing rib is connected to the sink and the mounting socket.

[0015] Further, a motor platform is further arranged at the end of the side wing, and the motor platform is located at the center of the circle of the safety ring.

[0016] Further, the suspension end of the safety ring is smoothly connected to the side plate.

[0017] Further, the cross-section of the safety ring is C-shaped, a sealing film is arranged at the orifice of the receiving groove, relief notches are formed on both sides of the orifice of the receiving groove, and both ends of the sealing film are bonded in the relief notches.

[0018] Further, a wire routing groove is formed at the bottom of the receiving groove, and a wiring port is arranged on the suspension end of the safety ring.

[0019] The beneficial effects brought by the present utility model:

[0020] 1. When the drone detects a risk of falling, the protection mechanism is activated quickly. The airbag pops out from the safety ring to form a buffer zone, effectively protecting the fuselage from direct impact. And because the safety ring is located around the blades, it focuses more on the protection of the blades and arms, covering the weak points of the drone.

[0021] 2. The blade protection mechanism is designed as a part of the side wing, and modular installation and fixation are achieved by using sink grooves, screw holes and U-shaped mounting parts. This not only does not increase the extra volume of the UAV and ensures flight performance, but is also easy to install and disassemble. When the blade protection structure needs to be replaced or maintained, it can be operated quickly, which has the advantage of simple operation;

[0022] 3. The structural design of the U-shaped mounting parts and the side wings ensures the stability of the drone's falling blade protection device, with a compact structure and low damage rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model 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 some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of a falling blade protection device for a drone on a drone according to the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of a falling blade protection device for a drone of the utility model;

[0026] Figure 3 It is a schematic diagram of the connection between the side wing and the U-shaped mounting member of the utility model;

[0027] Figure 4 It is a structural schematic diagram of a utility model safety ring. DETAILED DESCRIPTION

[0028] The following is a detailed description of the embodiments of the utility model in conjunction with the accompanying drawings. It should be clear that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figures 1-4As shown, in some illustrative embodiments, a UAV falling blade protection device is provided, including: a side wing 1 and a blade protection mechanism 2, the blade protection mechanism 2 and the UAV blade 3 are both arranged at the end of the side wing 1, and the main function of the blade protection mechanism 2 is to provide immediate protection for the fuselage and the UAV blade 3 when the UAV detects the risk of falling.

[0030] Grooves 101 are provided on both sides of the side wing 1. The grooves 101 provide a stable interface for installing the blade protection mechanism 2. Screw holes are provided at the bottom of the grooves 101. The screw holes are used to achieve a stable connection between the end and the blade protection mechanism 2. The side wing 1 is a hollow structure in the shape of a truncated cone, that is, the outer shape of the side wing 1 is a truncated cone, which helps to optimize the aerodynamic characteristics and reduce the air resistance during flight. The hollow design inside the side wing 1 can reduce the weight. The hollow structure reduces the overall mass of the wing. Secondly, it is used for wiring. The hollow part provides a safe channel for the internal wiring of the drone.

[0031] The shell wall near the end of the side wing 1 bulges outward to form a mounting sleeve 102. The mounting sleeve 102 provides a stable platform for fixing the blade protection mechanism 2 without affecting the original structural strength of the side wing 1. The two sides of the mounting sleeve 102 are recessed inward to form a recessed groove 101. The recessed groove 101 provides an embedded space for the connecting part of the blade protection mechanism 2, which not only enhances the stability of the connection, but also makes the interface between the blade protection mechanism 2 and the side wing 1 smoother and reduces air resistance through its structural characteristics. A column groove 103 is set at the bottom of the recessed groove 101, and an internal thread is opened on the groove wall of the column groove 103 to form a screw hole for connecting with the blade protection mechanism 2, that is, through a threaded connection, a tight and reliable connection between the blade protection mechanism 2 and the side wing 1 is achieved.

[0032] By using the mounting sleeve 102, the sink 101 and the column groove 103 in coordination, a stable and flexible installation solution is provided for the blade protection mechanism 2. This design not only improves the overall strength of the UAV structure, but also ensures the reliability and durability of key components in complex environments, thereby ensuring the safe operation and long-term use of the UAV. The most important point is that it will not weaken the original structural strength of the side wing 1.

[0033] In order to further ensure that the side wing 1 maintains sufficient structural strength and stability when subjected to various flight loads, a first reinforcing rib 104 and a second reinforcing rib 105 are disposed inside the side wing 1 .

[0034] The first reinforcing rib 104 is connected to the column groove 103 and the sinking groove 101. The first reinforcing rib 104 is directly connected to the column groove 103, providing additional support for the column groove 103 to ensure that the column groove 103 will not be deformed or damaged due to excessive force when the blade protection mechanism 2 is fixed by bolts or screws. At the same time, the first reinforcing rib 104 is also connected to the sinking groove 101, so that when the side wing 1 is subjected to lateral force or torsion, these forces can be effectively dispersed to prevent the shell wall near the sinking groove 101 from breaking.

[0035] The second reinforcing rib 105 is connected to the sinking groove 101 and the mounting socket 102. The connection of the second reinforcing rib 105 to the sinking groove 101 provides additional strength for the sinking groove 101 to ensure that the sinking groove 101 can withstand various forces from the mechanism without deformation after the blade protection mechanism 2 is installed in place. The second reinforcing rib 105 is also connected to the mounting socket 102, providing support for the mounting socket 102 to keep it stable when fixing the blade protection mechanism 2 and preventing the socket from being deformed or damaged due to external forces.

[0036] The blade protection mechanism 2, as a protection system for the fuselage and the drone blade 3, is used to improve the safety performance of the drone during a fall. Specifically, the blade protection mechanism 2 includes: a safety ring 4, a U-shaped mounting member 5, a buffer spring 6, and an airbag 7.

[0037] The safety ring 4 is a circular ring structure that surrounds the drone blade 3 to form a protection ring. A notch 401 is provided at the connection position between the safety ring 4 and the side wing 1, so that the safety ring 4 forms two suspended ends 402. A U-shaped mounting member 5 is provided on each of the two suspended ends 402, and the U-shaped mounting member 5 is used to achieve quick installation and disassembly with the side wing 1.

[0038] The U-shaped mounting member 5 is a key connection component in the blade protection mechanism 2. Its main function is to achieve a firm connection between the side wing 1 and the safety ring 4 to ensure the stability and reliability of the entire protection mechanism. Specifically, the U-shaped mounting member 5 includes: an arc-shaped plate 501 and two side plates 502 provided at both ends of the arc-shaped plate 501. The arc-shaped plate 501 and the side plates 502 are integrally formed structures. The integrally formed U-shaped mounting member 5 can enhance the overall strength and stability. The arc-shaped design of the arc-shaped plate 501 helps to evenly distribute the force to the entire U-shaped mounting member 5 when subjected to external forces, reducing local stress concentration, thereby reducing the risk of the structure breaking under impact.

[0039] A screw hole is formed in one of the side plates 502 of the U-shaped mounting member 5, and this screw hole is used in cooperation with the screw hole at the bottom of the sinking groove 101. That is, during installation, the side plate 502 on this side is embedded in the sinking groove 101 and connected to the side wing 1 by screws 8. The other side plate 502 of the U-shaped mounting member 5 is connected to the suspended end 402 of the safety ring 4. Preferably, there is a smooth transition connection between the suspended end 402 of the safety ring and the side plate 502 to reduce local stress concentration. A through hole 503 is formed in the side plate 502 of the U-shaped mounting member 5 that is connected to the safety ring 4 at the position corresponding to the sinking groove 101. During installation, a screw is fed into the U-shaped mounting member 5 at the through hole 503 and gradually screwed into the screw holes on the side plate 502 and the column groove 103.

[0040] During installation, the side plate 502 is embedded in the sinking groove 101, ensuring the alignment and stability of the U-shaped mounting member 5 and the side wing 1. Then, the screw 8 is fed into the U-shaped mounting member 5 through the through hole 503 and gradually screwed into the screw hole on the side plate 502 and the internal thread on the column groove 103. By forming the through hole 503 on the side plate 502 and using screws for fixation, the installation of the U-shaped mounting member 5 becomes more convenient and efficient. The overall design not only considers the structural strength and durability but also takes into account the installation convenience and maintenance feasibility.

[0041] Positioning rings 601 are provided at both ends of the buffer spring 6. The buffer spring 6 is arranged inside the U-shaped mounting member 5. One positioning ring 601 is arranged at the slot hole of the sinking groove 101, and the other positioning ring 601 is arranged at the orifice of the through hole 503. When the drone encounters bumps or impacts, the buffer spring 6 absorbs and disperses the impact energy through its expansion and contraction, thereby protecting the blade protection mechanism 2. At the same time, the installation position of the buffer spring 6 corresponds to the positions of the sinking groove 101 and the through hole 503, not only improving the anti-impact performance of the drone but also enhancing the overall stability of the structure at the weak positions.

[0042] A receiving groove 403 is provided on the safety ring 4. The cross-section of the safety ring 4 is C-shaped, that is, the receiving groove 403 is formed by the C-shaped cross-section of the safety ring 4. The airbag 7 is arranged in the receiving groove 403. A sealing film 404 is provided at the orifice of the receiving groove 403. The function of the sealing film 404 is to keep the receiving groove 403 closed under normal circumstances. Yielding notches are formed on both sides of the orifice of the receiving groove 403, and both ends of the sealing film 404 are bonded in the yielding notches.

[0043] When the sensors carried by the drone detect a risk of falling, for example, before a rapid descent or impact with the ground, the drone's protection mechanism will be quickly activated. After the protection mechanism is activated, the gas in the airbag 7 is quickly inflated, and the high pressure generated will cause the airbag 7 to expand and break through the cover film 404. Since both ends of the cover film 404 are bonded in the clearance gap, the process of breaking through the cover film 404 will cause the airbag 7 to quickly pop out of the receiving groove 403. Once the airbag 7 pops out, it will quickly expand to form a buffer layer, which can absorb the impact force when the drone hits the ground, thereby reducing damage to the internal components and structure of the drone.

[0044] A wiring groove 406 is provided at the bottom of the receiving groove 403, and a wiring port 405 is provided on the suspension end 402 of the safety ring. The wiring harness of the internal control board of the drone is led out from the inside of the side wing 1, and is designed with a connector adapted to the wiring port 405. The led wiring harness of the airbag 7 is arranged in the wiring groove 406 and connected to the wiring port 405, thereby completing the circuit closure, so that the airbag 7 can be inflated and deployed according to the control signal of the drone.

[0045] A motor platform 106 is also provided at the end of the side wing 1 . The motor platform 106 is located at the center of the safety ring 4 . A motor and a UAV blade 3 are provided on the motor platform 106 .

[0046] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A falling blade protection device for a drone, characterized in that: include: A side wing and a blade protection mechanism arranged at the end of the side wing; The two sides of the side wing are provided with sink grooves, and the bottom of the sink grooves is provided with screw holes; The blade protection mechanism comprises: a safety ring, a U-shaped mounting piece and a safety airbag; a notch is provided on the safety ring to form two suspension ends, one side plate of the U-shaped mounting piece is embedded in the sink groove and connected to the side wing by screws, and the other side plate is connected to the suspension end of the safety ring; The safety ring is provided with a receiving groove, and the safety airbag is arranged in the receiving groove.

2. The falling blade protection device for a drone according to claim 1, characterized in that: The U-shaped mounting member includes: an arc-shaped plate and two side plates arranged at both ends of the arc-shaped plate, the side plate embedded in the sink groove is provided with a screw hole, and the other side plate is provided with a through hole at a position corresponding to the sink groove.

3. The falling blade protection device for a drone according to claim 2, characterized in that: The blade protection mechanism also includes: a buffer spring and two positioning rings respectively arranged at both ends of the buffer spring; the buffer spring is arranged in the U-shaped mounting member, one of the positioning rings is arranged at the slot hole of the sink groove, and the other positioning ring is arranged at the opening of the through hole.

4. The falling blade protection device for a drone according to claim 3 is characterized in that: The side wing is a hollow structure in the shape of a truncated cone. The shell wall of the side wing protrudes outward to form a mounting sleeve. Both sides of the mounting sleeve are recessed inward to form the sink. A column groove is arranged at the bottom of the sink, and an internal thread is provided on the groove wall of the column groove.

5. The falling blade protection device for a drone according to claim 4, characterized in that: A first reinforcing rib and a second reinforcing rib are arranged inside the side wing; The first reinforcing rib is connected to the column groove and the sink groove; The second reinforcing rib is connected to the sink and the mounting sleeve.

6. The falling blade protection device for unmanned aerial vehicle according to claim 5, characterized in that: A motor platform is also provided at the end of the side wing, and the motor platform is located at the center of the safety ring.

7. The falling blade protection device for a drone according to claim 6, characterized in that: The suspended end of the safety ring is connected to the side plate in a smooth transition.

8. The falling blade protection device for unmanned aerial vehicle according to claim 7, characterized in that: The cross section of the safety ring is C-shaped, a sealing film is arranged at the notch of the accommodating groove, and a clearance gap is provided on both sides of the notch of the accommodating groove, and two ends of the sealing film are bonded in the clearance gap.

9. The falling blade protection device for a drone according to claim 8, characterized in that: A wiring groove is provided at the bottom of the accommodating groove, and a wiring port is provided on the suspended end of the safety ring.

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