CN214649019U

CN214649019U - Unmanned aerial vehicle's protection accessory and unmanned aerial vehicle

Info

Publication number: CN214649019U
Application number: CN202120452487.2U
Authority: CN
Inventors: 马冀; 郭盛家
Original assignee: Dji Baiwang Technology Co ltd
Current assignee: Dji Baiwang Technology Co ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-11-09
Anticipated expiration: 2031-03-02

Abstract

The application discloses unmanned aerial vehicle's protection accessory and unmanned aerial vehicle relates to unmanned aerial vehicle technical field. The protection accessory specifically includes: a blade protector and an elastic connector; one end of the blade protection piece is detachably connected to the horn, the other end of the blade protection piece is detachably connected to the horn through the elastic connecting piece, and the blade protection piece and the elastic connecting piece form a moving space, so that blades on the horn can rotate in the moving space. In this application embodiment, can partly pass through paddle protection piece and elastic connection spare's physical deformation with the external force that unmanned aerial vehicle received and absorb, another part converts into rotatory kinetic energy and absorbs, just so can effectively promote unmanned aerial vehicle's crashproof ability.

Description

Unmanned aerial vehicle's protection accessory and unmanned aerial vehicle

Technical Field

This application belongs to unmanned air vehicle technical field, concretely relates to unmanned aerial vehicle's protection accessory and unmanned aerial vehicle.

Background

With the high-speed development of the unmanned aerial vehicle industry, users put higher demands on the performance of unmanned aerial vehicles. When the unmanned aerial vehicle flies or goes up and down, the unmanned aerial vehicle is very easy to collide in the air due to unskilled operation of a user or faults of an active obstacle avoidance system through a laser radar and the like. After the horn or the paddle of unmanned aerial vehicle etc. receive very strong external force and strike, because its deformation energy-absorbing capacity through self structure is less, the spoilage is higher after unmanned aerial vehicle collides.

SUMMERY OF THE UTILITY MODEL

The purpose of this application embodiment is to provide an unmanned aerial vehicle's protection accessory, can solve unmanned aerial vehicle and receive the higher problem of external force impact spoilage.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides an unmanned aerial vehicle's protection accessory, include: a blade protector and an elastic connector;

one end of the blade protection piece is detachably connected to the horn, the other end of the blade protection piece is detachably connected to the horn through the elastic connecting piece, and the blade protection piece and the elastic connecting piece form a moving space, so that blades on the horn can rotate in the moving space.

Optionally, the blade protector comprises a support portion and an arc protector portion;

one end of the supporting part is fixedly connected to one end of the arc-shaped protection part, and the other end of the supporting part is rotatably connected to the machine arm;

the other end of the arc-shaped protection part is rotatably connected with the elastic connecting piece.

Optionally, the arcuate guards are curved towards a direction away from the blade.

Optionally, the supporting portion and the elastic connecting piece form a preset included angle.

Optionally, the protection accessory further comprises: a horn link;

the blade protection piece and the elastic connecting piece are detachably connected to the horn through the horn connecting piece.

Optionally, the horn connecting piece and the horn are of an integrally formed structure or detachably connected.

Optionally, the horn connection is at least partially disposed around a motor mount of the horn.

Optionally, the horn connecting piece is provided with a first connecting part and a second connecting part along the circumferential direction of the motor base;

one end of the blade protector is rotatably connected to the first connecting portion, and the elastic connector is rotatably connected to the second connecting portion.

Optionally, the blade protector is rotatably connected to the first connection portion by a first connector;

and/or the elastic connecting piece is rotatably connected to the second connecting part through a second connecting piece.

Optionally, the first connecting member includes: at least one of a bolt, a rotating shaft and a shaft pin;

the second connector includes: at least one of a bolt, a shaft, and a shaft pin.

Optionally, the first connector and the second connector are different.

Optionally, the protection accessory further comprises: a limiting member;

one end of the limiting piece is rotatably connected to the horn, and the other end of the limiting piece extends towards the direction of the blade protection piece;

the elastic connecting piece is sleeved on the limiting piece.

Optionally, the elastic connection member includes: at least one of a spring and a gas spring.

Optionally, the number of the elastic connecting pieces is multiple;

the elastic connecting pieces are arranged side by side, one end of each elastic piece is detachably connected to the horn, and the other end of each elastic piece is detachably connected to the blade protecting piece.

In a second aspect, an embodiment of the present application provides an unmanned aerial vehicle, including: an unmanned aerial vehicle body and the protection accessory;

wherein, protection accessory detachably installs on the horn of unmanned aerial vehicle main part.

Optionally, the number of the protection fittings is multiple;

wherein, every protection accessory corresponds an arm setting in the unmanned aerial vehicle main part.

Optionally, a flight control system is further arranged on the unmanned aerial vehicle main body;

under the condition that the elastic connecting piece of the protection accessory generates extension or contraction deformation, the flight control system changes the control mode of the unmanned aerial vehicle.

In this application embodiment, because the one end of paddle protection piece can be dismantled and connect in the horn, the other end can be dismantled through elastic connection spare and connect in the horn, consequently, can be through on the horn with above-mentioned protection accessory dismouting to unmanned aerial vehicle as required to promote unmanned aerial vehicle and above-mentioned protection accessory's portability. In practical application, because paddle protection piece and elastic connection spare form the activity space, make the paddle on the horn can be at the activity space internal rotation, just also be equivalent to and protected the circumference of paddle through paddle protection piece and elastic connection spare, in case the bump takes place at unmanned aerial vehicle flight in-process, because elastic connection spare's the flexible ability of elasticity, can effectively cushion external force through elastic connection spare's extension or compression. And, because the one end setting that elastic connector is close to paddle protection piece and connect on the horn, when paddle protection piece received external force and assaulted, just also make paddle protection piece deflect to elastic connector's one end, because inertial effect this moment, unmanned aerial vehicle's fuselage can be towards the deflection in the opposite direction, the physical deformation that also will receive partly external force that just so is equivalent to passes through paddle protection piece and elastic connector absorbs, another part converts rotatory kinetic energy into and absorbs, just so can effectively promote unmanned aerial vehicle's crashproof ability.

Drawings

FIG. 1 is a schematic structural view of a shield assembly according to an embodiment of the present disclosure;

fig. 2 is a second schematic structural diagram of the protection accessory according to the embodiment of the present application.

Fig. 3 is a schematic view of an installation structure of the protection accessory on the unmanned aerial vehicle according to the embodiment of the application.

Description of reference numerals:

1: an unmanned aerial vehicle main body; 11: a horn; 12: a paddle; 10: a blade protector; 20: an elastic connecting member; 30: a horn link; 40: a motor base; 41: a motor; 101: a support portion; 102: an arc-shaped protection part; 301: a first connection portion; 302: a second connecting portion; 50: a first connecting member; 60: a second connecting member; 70: and a limiting member.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

At present, the flight protection of an unmanned aerial vehicle is mainly composed of two parts, wherein the first part is an airplane obstacle avoidance system which actively avoids obstacles through technologies such as vision, laser radar and the like, but the obstacle avoidance success rate of the system is greatly reduced under the working condition of night flight, particularly in the environment with fine characteristics such as electric wires and the like; the second part is the physical protection after the collision takes place, fly at low-speed (being less than under 3 m/s's the operating mode), rigid deformation energy-absorbing through the paddle safety cover of installation etc. can protect the aircraft not receive the damage, however above-mentioned paddle safety cover is because rigid deformation ability is limited, therefore, protection to unmanned aerial vehicle has certain limitation, especially when unmanned aerial vehicle flying speed is higher (being greater than or equal to under 3 m/s' the operating mode), its protective capacities can't satisfy unmanned aerial vehicle's protection demand, this application embodiment is based on above-mentioned problem exactly, an unmanned aerial vehicle's protection accessory is provided, through with on the horn of protection accessory dismouting to unmanned aerial vehicle as required, thereby promote unmanned aerial vehicle's protective capacities and portability.

The protection accessory of the unmanned aerial vehicle and the unmanned aerial vehicle provided by the embodiment of the application are described in detail through a specific embodiment and an application scene thereof in combination with the accompanying drawings.

Referring to fig. 1, there is shown one of the schematic structural views of the protection accessory according to the embodiment of the present application. Referring to fig. 2, a second schematic structural diagram of the protection accessory according to the embodiment of the present application is shown. Referring to fig. 3, a schematic diagram of an installation structure of the protection accessory on the unmanned aerial vehicle according to the embodiment of the present application is shown.

In this application embodiment, protection accessory can detachably connect on unmanned aerial vehicle's horn to at unmanned aerial vehicle during operation, can promote unmanned aerial vehicle's crashproof ability through the assembly protection accessory, when unmanned aerial vehicle accomodates and carries, will protect the accessory and dismantle by unmanned aerial vehicle on, in order to avoid protecting the accessory to increase unmanned aerial vehicle's volume, be convenient for unmanned aerial vehicle and protection accessory accomodate and carry.

In this embodiment, the protection accessory may specifically include: blade protector 10 and elastic connector 20; one end of the blade protector 10 is detachably connected to the horn 11, the other end of the blade protector is detachably connected to the horn 11 through the elastic connector 20, and the blade protector 10 and the elastic connector 20 form a moving space, so that the blade on the horn 11 can rotate in the moving space.

In this application embodiment, because the one end of paddle protection piece 10 can be dismantled and connect in horn 11, the other end can be dismantled through elastic connection spare 20 and connect in horn 11, consequently, can be through on the horn 11 with above-mentioned protection accessory dismouting to unmanned aerial vehicle as required to promote unmanned aerial vehicle protective capacities and portable performance.

In practical application, because paddle protection piece 10 and elastic connection piece 20 form the activity space, make the paddle on the horn 11 can be at the activity space internal rotation, just also be equivalent to and protected the circumference of paddle through paddle protection piece 10 and elastic connection piece, in case the collision takes place at unmanned aerial vehicle flight in-process, because elastic connection piece 20's the flexible ability of elasticity, can effectively cushion external force through the extension or the shrink of elastic connection piece 20. And, because elastic connector 20 is close to the one end setting of paddle protection piece 10 and connects on horn 11, when paddle protection piece 10 received external force impact, just also make paddle protection piece 10 deflect to elastic connector 20's one end, this moment because inertial effect, unmanned aerial vehicle's fuselage can be towards the deflection in the opposite direction, the physical deformation that external force partly passes through paddle protection piece 10 and elastic connector 20 that also will receive absorbs in other words, another part converts unmanned aerial vehicle's rotatory kinetic energy into and is absorbed, just so can effectively promote unmanned aerial vehicle's crashproof ability.

Alternatively, the elastic connection member 20 includes: at least one of a spring and a gas spring.

In practical applications, the elastic connector 20 may be a spring with a wider application range and a lower cost, so that the cost of the protection component is correspondingly lower. Alternatively, the elastic connection member 20 may also be a gas spring, which has various functions such as supporting, buffering, braking, height adjustment, and angle adjustment, and thus, the use of the gas spring as the elastic connection member 20 also has the above-mentioned functions accordingly. The spring or gas spring may be selected by those skilled in the art according to actual requirements, and the embodiment of the present application is not particularly limited in this respect.

In the embodiment of the present application, in order to regulate the extension or retraction path of the elastic connection member 20, the protection fitting may further include: a stopper 70; one end of the limiting member 70 is rotatably connected to the horn 11, and the other end extends toward the blade protector 10; the elastic connecting member 20 is at least partially sleeved on the limiting member 70.

In the embodiment of the present application, when the elastic connection member 20 is a spring, the limiting member can play a role in guiding and limiting by sleeving the spring on the limiting member 70, so as to prevent the spring from bending deformation during compression or stretching, thereby effectively prolonging the service life of the spring.

In practical application, the limiting member 70 may be disposed like a cantilever beam, that is, one end of the limiting member 70 is a fixed end and is rotatably connected to the horn 11, and the other end of the limiting member 70 is a free end and is disposed in a suspension manner, when the elastic connection member 20 is compressed to the free end of the limiting member 70, the elastic connection member 20 cannot be compressed continuously, so that the elastic connection member 20 can be effectively protected, and damage to the elastic connection member 20 due to excessive compression is avoided. It is understood that the other end of the limiting member 70 may be rotatably connected to the blade protector 10, and the limiting member 70 should have elastic expansion and contraction performance, so as to limit and guide the elastic connection member 20, and protect the elastic connection member 20.

In the embodiment of the present application, the position-limiting member 70 may be a column structure having elasticity like the elastic connection member 20, for example, an elastic plastic column, a sponge column, an elastic rope, or the like.

In practical applications, the number of the elastic connecting members 20 may be one or more. In the case where the number of the elastic connection members 20 is plural, the plural elastic connection members 20 are arranged side by side, and one end of each elastic member is detachably connected to the horn 11 and the other end is detachably connected to the blade protector 10, so that the ability of the elastic connection members 20 to be deformed by impact can be adjusted by adjusting the number of the elastic connection members 20. It is understood that the elastic expansion force of the elastic connection element 20 can also be changed by changing the size of the elastic connection element 20, and those skilled in the art can select the arrangement, and the embodiment of the present application is not limited.

In addition, in order to combine the capability of protecting the horn 11 and the blade with the blade protector 10 and reduce the cost of the blade protector 10, specifically, the blade protector 10 may include: a support 101 and an arc guard 102; one end of the supporting part 101 is fixedly connected to one end of the arc-shaped protection part 102, and the other end is rotatably connected to the machine arm 11; the other end of the arc-shaped protector 102 is rotatably connected to the elastic connection member 20.

In the embodiment of the present application, the arc-shaped protector 102 may be curved toward a direction away from the blade, or the arc-shaped protector 102 may be disposed along a circumferential edge of the blade in rotation. It can be understood that, in order to avoid the blade protection portion from deforming under the impact of an external force and affecting the rotation of the blade, the blade protection portion is usually reserved with a preset distance from the rotating edge of the blade.

In the embodiment of the present application, one end of the supporting portion 101 is fixedly connected to the arc-shaped protection portion 102, and the other end of the supporting portion is rotatably connected to the horn 11, and the other end of the arc-shaped protection portion 102 is rotatably connected to the elastic connecting member 20, that is, the other end of the arc-shaped protection portion 102 is connected to the horn 11 through the elastic connecting member 20. That is, the elastic link 20 corresponds to the elastically stretchable support portion 101 provided at the other end of the arc-shaped protector 102.

Optionally, the supporting portion 101 and the elastic connecting member 20 are disposed at a predetermined angle.

As shown in fig. 1, the arc-shaped protection part 102, the support part 101 and the elastic connection member 20 form a structure similar to a triangle, and the structure of the protection fitting formed by the arc-shaped protection part 102, the support part 101 and the elastic connection member 20 is stable, so that the horn 11 and the blade can be effectively protected.

In this embodiment, in order to improve the convenience of installation or detachment of the protection accessory and the horn 11, the protection accessory may further include: a horn link 30; the blade protector 10 and the elastic connector 20 are detachably connected to the horn 11 through the horn connector 30. For example, horn connecting piece 30 can be as an intermediate junction spare between protection accessory and the horn 11, at first be fixed in horn connecting piece 30 on the horn 11, can specifically indicate to be fixed in horn connecting piece 30 on the motor cabinet 40 of horn 11 in this application embodiment, then, with paddle protection piece 10, all detachable connections on horn connecting piece 30 of elastic connection 20, even if do not set up the connecting portion that corresponds with paddle protection piece 10, elastic connection 20 on the horn 11 like this, also can install protection accessory, promote unmanned aerial vehicle's protective capacities.

Alternatively, for reliability of the connection between the jib connection member 30 and the jib 11, the jib connection member 30 may be arranged at least partially around the motor mount 40 of the jib 11.

In the embodiment of the present application, along the circumferential direction of the motor base 40, the horn connecting member 30 is provided with a first connecting portion 301 and a second connecting portion 302; one end of the blade protector 10 is rotatably connected to the first connection portion 301 and the resilient connector 20 is rotatably connected to the second connection portion 302. Specifically, the first connection portion 301 and the second connection portion 302 may be provided with connection protrusions along the circumferential direction of the motor base 40, and the blade protector 10 and the elastic connector 20 may be more conveniently mounted and dismounted by the connection protrusions.

Alternatively, the blade protector 10 is rotatably connected to the first connection portion 301 by the first connector 50; and/or, the elastic connection member 20 is rotatably connected to the second connection portion 302 by the second connection member 60.

In the embodiment of the present application, the first connecting member 50 may include: at least one of a bolt, a rotating shaft and a shaft pin; the second connector 60 may also include: at least one of a bolt, a shaft, and a shaft pin.

For example, the blade protector 10 and the elastic connector 20 may be rotatably connected to the horn connector 30 by bolts. In practical application, the bolt can realize reliable rotatable connection among the blade protector 10, the elastic connector 20 and the horn connector 30, and the installation is simple and quick.

In practice, the first connector 50 corresponding to the blade protector 10 and the second connector 60 corresponding to the resilient connector 20 may be configured differently in order to promote anti-back-out capability of the fender assembly. For example, the blade protector 10 may be rotatably coupled to the first coupling portion 301 by a bolt, and the elastic connector 20 may be rotatably coupled to the second coupling portion 302 by a shaft pin. Of course, when the blade protector 10 and the elastic connector 20 are both rotatably connected by a bolt, the bolt corresponding to the blade protector 10 and the bolt corresponding to the elastic connector 20 may be different in type, so as to avoid that the elastic connector 20 is disposed on the same side of the blade protector 10 in the corresponding protection accessory on each arm 11 during the assembly process of the protection accessories.

It is understood that the elastic connector 20 and the blade protector 10 can be rotatably connected by the above-mentioned connectors such as bolts, pins, shafts, etc. the principle is the same as that of the above-mentioned first connector 50 and second connector 60, and the description of the embodiment of the present application is omitted here.

In practical application, paddle protection piece 10 and horn connecting piece 30, elastic connector 20 all can be connected through connecting pieces such as bolt, pivot with paddle protection piece 10, because the easy installation of above-mentioned connecting piece and dismantlement, consequently, can be when unmanned aerial vehicle is in the state of accomodating, accomodate protection accessory dismantlement fast to protection accessory and unmanned aerial vehicle's whole volume has been reduced, make it easily accomodate and carry.

In this application embodiment, horn connecting piece 30 can be with horn 11 for integrated into one piece structure, that is to say, reserve the installation department on horn 11, use protection accessory reinforcing unmanned aerial vehicle's the protective capacities's under the circumstances at needs under, paddle protection spare and elastic connector 20 can install on the installation department. The horn connecting piece 30 and the horn 11 are of an integrated structure, so that the connection strength between the horn connecting piece 30 and the horn 11 can be effectively improved, the number of parts of protection accessories is reduced, and the protection accessories can be mounted and dismounted more conveniently.

Alternatively, the horn connecting member 30 may be detachably connected to the horn 11, that is, the horn connecting member 30 is detachably sleeved on the motor base 40 of the horn 11 as an independent component. For example, the horn connector 30 may be of a clip-like construction, snap-fit or screw-fit to the motor mount 40. Do not reserve the condition of the installation department that docks with the protection accessory on 11 to the horn, can at first locate motor cabinet 40 with horn connecting piece 30 detachably cover on, then all rotationally connect on horn connecting piece 30 with paddle protection piece 10, elastic connection piece 20 again to the unmanned aerial vehicle that makes arbitrary model all can increase its protective capacities through setting up the protection accessory.

The following explains in detail the all-round protection of the protection accessory to the quad-rotor unmanned aerial vehicle by the installation example of the protection accessory on the quad-rotor unmanned aerial vehicle.

As shown in fig. 2, the motor base 40 of each arm 11 of the unmanned aerial vehicle is correspondingly arranged on a set of protection accessories (an arm a, an arm B, an arm C and an arm D). In the protection fittings correspondingly disposed on each horn 11, the elastic connectors 20 in the protection fittings are disposed on the same side of the blade protector 10, and the elastic connectors 20 on the horns a, B, C, and D are all located on the right side of the blade protector 10 (see fig. 2). Of course, it is also possible to provide that the elastic connections 20 are all located on the left side of the blade protector 10 (the other side opposite to that in fig. 2), which can be provided by a person skilled in the art as the case may be.

In practical application, when the blade protector 10 on the arm a collides during the flight of the unmanned aerial vehicle, because the blade protector 10 is rotatably connected to the first connection portion 301 on the arm connector 30 through the first connector 50, the elastic connector 20 is rotatably connected to the second connection portion 302 on the arm connector 30, and the elastic connector 20 is compressed and deformed by a force, under the impact of the collision, the blade protector 10 rotates (clockwise) toward the elastic connector 20 with the first connector 50 as an axis, the elastic connector 20 is compressed and deformed, and the blade protector 10 and the elastic connector 20 both deflect clockwise, at this time, the unmanned aerial vehicle can rotate counterclockwise due to an inertia effect until the arm B rotates to the position of the arm a, and then the protection fittings on the arm B continue to collide to generate the rotation of the protection fittings on the arm a in the same direction as the above protection fittings on the arm a, unmanned aerial vehicle continues to rotate to the anticlockwise because of inertial action, and horn C rotates to horn A position, and the paddle on protection accessory protection horn C and the horn C on the horn C circulates like this, and the protection accessory protects the horn at its place and the paddle etc. on the horn in proper order. Moreover, not only absorb external force through the physical deformation of paddle protection piece 10, elastic connection piece 20, still offset absorption part external force through unmanned aerial vehicle's rotation, consequently, can make unmanned aerial vehicle bear the striking of higher speed to unmanned aerial vehicle's damage degree after can furthest reducing the collision. Moreover, in the anticlockwise rotation process of the unmanned aerial vehicle, in order to accelerate the unmanned aerial vehicle to reach the stable state, the flight attitude (or referred to as a flight mode) of the unmanned aerial vehicle can be controlled by a flight control system of the unmanned aerial vehicle, so that the unmanned aerial vehicle can reach the stable state more quickly. For example, when detecting that the unmanned aerial vehicle rotates, the flight mode of the unmanned aerial vehicle can be changed from a high-speed forward mode to an in-situ hovering mode through the flight control system, so that the unmanned aerial vehicle can quickly enter a stable state after collision occurs, and damage to the unmanned aerial vehicle is avoided.

In this application embodiment, after unmanned aerial vehicle bumps, can convert the kinetic energy of direction of advance into the kinetic energy of direction of rotation, then through flight control system, with unmanned aerial vehicle attitude control to stable state gradually, rather than the simple deformation energy-absorbing through the protection accessory, consequently, promotion unmanned aerial vehicle's that can be by a relatively large margin flight protection level reduces the damage degree after the collision.

In summary, the protection accessory of the embodiment of the present application at least includes the following advantages:

The embodiment of the application further provides an unmanned aerial vehicle, which specifically comprises: an unmanned aerial vehicle body and the protection accessory; wherein, protection accessory detachably installs on the horn of unmanned aerial vehicle main part.

In the embodiments of the present application, drones include, but are not limited to, conventional quad-rotor drones, hexa-rotor drones, and the like.

Optionally, the number of the protection fittings is multiple; wherein, every protection accessory corresponds the horn setting in the unmanned aerial vehicle main part.

In practical application, in order to carry out the omnidirectional protection to unmanned aerial vehicle, can correspond every horn and set up one set of protection accessory. For example, take conventional four rotor unmanned aerial vehicle as an example, be equipped with one set of protection accessory on every horn on unmanned aerial vehicle's four horns, like this, receive external force at unmanned aerial vehicle's arbitrary one protection accessory, when unmanned aerial vehicle takes place the counter rotation, along unmanned aerial vehicle's direction of rotation, protection accessory on every horn all plays protection and cushioning effect in proper order to effectively protect horn and paddle.

In the embodiment of the application, the main body of the unmanned aerial vehicle is also provided with a flight control system; under the condition that the elastic connecting piece of protection accessory produces extension or shrink deformation, flight control system changes unmanned aerial vehicle's control mode. For example, in the case that the elastic connecting piece is detected to be expanded or contracted to deform, the control mode of the unmanned aerial vehicle is modified from a high-speed advancing mode to an in-situ hovering mode through the flight control system, so that the unmanned aerial vehicle can enter a stable state quickly after being impacted.

In this application embodiment, through detachable installation protection accessory on unmanned aerial vehicle, can effectively promote unmanned aerial vehicle and bear the ability of high-speed striking, reduce the damage degree after the collision. When unmanned aerial vehicle need carry, can also dismantle the protection accessory by unmanned aerial vehicle and get off to in accomodate and carry, effectively promoted unmanned aerial vehicle's portability.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A protection accessory of unmanned aerial vehicle for detachably connecting to an arm of an unmanned aerial vehicle, the protection accessory comprising: a blade protector and an elastic connector;

2. The fender assembly of claim 1, wherein the blade protector comprises a support portion and an arcuate protector portion;

3. The fender assembly of claim 2 wherein the arcuate fender portion is curved away from the blade.

4. A protective accessory according to claim 2, wherein the support portion is disposed at a predetermined included angle to the resilient connecting member.

5. The protective accessory of claim 1, further comprising: a horn link;

6. The fender assembly of claim 5, wherein the horn connector is of unitary construction or is removably connectable to the horn.

7. The shield assembly of claim 5 wherein the horn connector is disposed at least partially around a motor mount of the horn.

8. The protection accessory of claim 7, wherein the first connecting portion and the second connecting portion are respectively arranged on the horn connecting member along the circumferential direction of the motor base;

9. The fender assembly of claim 8, wherein the blade protector is rotatably coupled to the first coupling portion by a first coupling member;

10. The fender assembly of claim 9, wherein the first connector is one of a bolt, a shaft, and a shaft pin;

the second connecting piece is one of a bolt, a rotating shaft and a shaft pin.

11. The fender assembly of claim 9, wherein the first connector and the second connector are different.

12. The protective accessory of claim 1, further comprising: a limiting member;

the elastic connecting piece is at least partially sleeved on the limiting piece.

13. A guard assembly according to claim 1, characterised in that the resilient connector is one of a spring and a gas spring.

14. The protective accessory of claim 1, wherein the number of said elastic connectors is plural;

the elastic connecting pieces are arranged side by side, one end of each elastic connecting piece is detachably connected to the horn, and the other end of each elastic connecting piece is detachably connected to the blade protecting piece.

15. A drone, characterized in that it comprises: a drone body, and the protective accessory of any one of claims 1 to 14;

16. A drone according to claim 15, wherein the number of protection accessories is plural;

17. The unmanned aerial vehicle of claim 15, wherein the unmanned aerial vehicle body is further provided with a flight control system;