Arm assembly and drone

Abstract

The present invention discloses an arm assembly and a drone. The arm assembly includes a support member, and an active spring-opening arm, a driven spring-opening arm, a locking structure, a driving device, a first spring-opening assembly and a second spring-opening assembly arranged on the support member; the active spring-opening arm includes a first spring-opening end and a first rotating end, the driven spring-opening arm includes a second spring-opening end and a second rotating end, a first engaging structure is provided on the active spring-opening arm, and a second engaging structure is provided on the driven spring-opening arm. When the first engaging structure is engaged with the second engaging structure, both the first spring-opening end and the second spring-opening end are close to the support member. At this time, the locking structure locks the active spring-opening arm; the driving device is connected to the locking structure, and the driving device can drive the locking structure to move and release the active spring-opening arm. At this time, the first spring-opening end moves away from the support member, the first engaging structure releases the second engaging structure, and the second spring-opening end also moves away from the support member. By controlling the driving device, the automatic spring-opening of the arm assembly can be realized.

Description

Technical Field

[0001] The present invention relates to the field of unmanned aerial vehicles, and more particularly, to an arm assembly and an unmanned aerial vehicle. Background Art

[0002] Due to the increasingly complex use environment of unmanned aerial vehicles, higher requirements are placed on the carrying volume, speed, take-off method, and functional flexibility of unmanned aerial vehicles. Currently, unmanned aerial vehicles generally have the problem of large carrying volume and inconvenience in carrying around. A small number of unmanned aerial vehicles with a retractable structure also need to be manually unfolded and cannot be automatically unfolded. Summary of the Invention

[0003] The object of the present invention is to overcome the above-mentioned defects existing in the prior art, and to provide an arm assembly and an unmanned aerial vehicle that can automatically open the arms.

[0004] To achieve the above object, the technical solution of the present invention is as follows:

[0005] An arm assembly includes a support member, and an active spring-opening arm, a passive spring-opening arm, a locking structure, a driving device, a first spring-opening component, and a second spring-opening component provided on the support member;

[0006] The active spring-opening arm includes a first rotation end and a first spring-opening end, the first rotation end is rotatably connected to the support member, the passive spring-opening arm includes a second rotation end and a second spring-opening end, and the second rotation end is rotatably connected to the support member.

[0007] A first engaging structure is provided on the active spring-opening arm, and a second engaging structure cooperating with the first engaging structure is provided on the passive spring-opening arm. When the first engaging structure is engaged with the second engaging structure, both the first spring-opening end and the second spring-opening end are close to the support member. At this time, the locking structure can lock the active spring-opening arm.

[0008] The first spring-opening component is connected to the active spring-opening arm;

[0009] The second spring-opening component is connected to the passive spring-opening arm;

[0010] The driving device is connected to the locking structure, and the driving device can drive the locking structure to release the active spring-opening arm. At this time, the first spring-opening end is sprung away from the support member under the action of the first spring-opening component, the first spring-opening end sprung away drives the first engaging structure to release the second engaging structure, and the second spring-opening end is also sprung away from the support member under the action of the second spring-opening component.

[0011] The present invention also discloses an unmanned aerial vehicle, which includes the above-mentioned arm assembly.

[0012] Implementing the embodiments of the present invention will have the following beneficial effects:

[0013] In the embodiments of the present invention, by providing the first engaging structure and the second engaging structure, the first elastic opening portion of the active elastic opening arm and the second elastic opening portion of the driven elastic opening arm are both close to the support member. At this time, the locking structure locks the active elastic opening arm, and the arm assembly is in a contracted state. When it is to be elastically opened, by controlling the driving device for driving the movement of the locking structure, it is possible to control the locking structure to release the active elastic opening arm, and the active elastic opening arm elastically opens. At this time, the first engaging structure and the second engaging structure become disengaged, and the driven elastic opening arm also elastically opens. Thus, the arm assembly is in an open state. Therefore, by controlling the driving device, the automatic opening of the arm assembly can be achieved. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Among them:

[0016] Figure 1 is a schematic structural diagram of the arm assembly in an open state in a specific embodiment of the present invention.

[0017] Figure 2 is Figure 1 a schematic structural diagram of the arm assembly shown in a contracted state.

[0018] Figure 3 is Figure 2 a partial enlarged structural diagram of area A in

[0019] Figure 4 is an exploded structural diagram of a drone in a specific embodiment of the present invention. Detailed Embodiments

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] The present invention discloses an arm assembly 100, which includes a support member 10 and an active spring-opening arm 20, a driven spring-opening arm, a locking structure, a driving device 70, a first spring-opening assembly 23 and a second spring-opening assembly disposed on the support member 10; the active spring-opening arm 20 includes a first rotating end 21 and a first spring-opening end 22, the first rotating end 21 is rotatably connected to the support member 10, the driven spring-opening arm includes a second rotating end 31 and a second spring-opening end 32, the second rotating end 31 is rotatably connected to the support member 10, a first engaging structure is provided on the active spring-opening arm 20, and a second engaging structure cooperating with the first engaging structure is provided on the driven spring-opening arm; when the first engaging structure and the second engaging structure are engaged and connected, both the first spring-opening end 22 and the second spring-opening end 32 are close to the support member 10. At this time, the locking structure can lock the active spring-opening arm 20, and the locking of the active spring-opening arm 20 drives the locking of the driven spring-opening arm as well. At this time, the arm assembly 100 is in a contracted state.

[0022] The first spring-opening assembly 23 is connected to the active spring-opening arm 20; the second spring-opening assembly is connected to the driven spring-opening arm; the driving device 70 is connected to the locking structure, and the driving device 70 can drive the locking structure to release the active spring-opening arm 20. At this time, the active spring-opening arm 20 springs open away from the support member 10 under the action of the first spring-opening assembly 23. The springing open of the active spring-opening arm 20 drives the first engaging structure to release the second engaging structure, and the driven spring-opening arm also moves away from the support member 10 under the action of the second spring-opening assembly. At this time, the arm assembly 100 is in an open state.

[0023] By controlling the driving device 70, the movement control of the locking structure is realized. The locking structure releases the active spring-opening arm 20, and the active spring-opening arm 20 springs open under the action of the first spring-opening assembly 23. The springing open of the active spring-opening arm 20 drives the first engaging structure and the second engaging structure to become disengaged, causing the driven spring-opening arm to also spring open, thereby realizing the automatic opening of the arm assembly 100. Therefore, by controlling the driving device 70, the automatic opening of the arm assembly 100 can be achieved.

[0024] Since the automatic opening of the arm assembly 100 can be achieved by controlling the driving device 70, therefore, the take-off mode of the unmanned aerial vehicle of the present invention does not have to be carried out on the ground for take-off, and can be achieved by throwing or airdropping. For example, during the throwing or airdropping process, the flight control module 500 controls the driving device 70 to rotate by sensing the speed and acceleration of the unmanned aerial vehicle during the throwing process. The active spring-opening arm 20 springs open under the action of the first spring-opening assembly 23. At the same time, each engaging structure becomes disengaged, and each driven spring-opening arm is also sprung open, thereby realizing the automatic springing open of the arm assembly 100, and then performing subsequent flight tasks. Adopting the take-off mode of throwing or airdropping can overcome the problem that normal take-off cannot be carried out on complex ground.

[0025] Further, the number of driven elastic opening arms can be N, where N is greater than or equal to 2. They are respectively the first driven elastic opening arm 30, the second driven elastic opening arm 40, ……, and the Nth driven elastic opening arm. The first driven elastic opening arm 30 includes a second rotating end 31 and a second elastic opening end 32. The second driven elastic opening arm 40 includes a third rotating end 41 and a third elastic opening end 42, and so on. The Nth driven elastic opening arm includes an Nth rotating end and an Nth elastic opening end. The first rotating end 21, the second rotating end 31, the third rotating end 41, ……, and the Nth rotating end are all rotatably connected to the support member 10. That is to say, the arm assembly 100 of the present invention can include 1 active elastic opening arm 20 and 1, 2, or more than 2 driven elastic opening arms. That is, the arm assembly 100 of the present invention can include two, three, four, six, eight, or the like arms. In this specific embodiment, the driven elastic opening arms include the first driven elastic opening arm 30, the second driven elastic opening arm 40, and the third driven elastic opening arm 50. The third driven elastic opening arm 50 includes a fourth rotating end 51 and a fourth elastic opening end 52.

[0026] Further, when there are multiple driven elastic opening arms, the first driven elastic opening arm 30 is provided with a second engaging structure, and the second driven elastic opening arm 40 is provided with a third engaging structure that matches the second engaging structure, and so on. The Nth driven elastic opening arm is provided with an (N + 1)th engaging structure that matches the Nth engaging structure. In this way, each driven elastic opening arm and the active elastic opening arm 20 are sequentially engaged and connected. When the locking structure locks the active elastic opening arm 20, the first elastic opening end 22 of the active elastic opening arm 20 approaches the support member 10. The active elastic opening arm 20 causes each driven elastic opening arm to also approach the support member 10 through the above-mentioned engaging structure, so that all the arms of the arm assembly 100 are in a contracted state. When the locking structure releases the active elastic opening arm 20, the active elastic opening arm 20 pops open under the action of the first elastic opening assembly 23. The first engaging structure releases the second engaging structure, and the first driven elastic opening arm 30 pops open under the action of the second elastic opening assembly. The second engaging structure releases the third engaging structure, and so on. The (N + 1)th engaging structure releases the Nth engaging structure, and each driven elastic opening arm and the active elastic opening arm 20 are all opened. In this specific embodiment, the active elastic opening arm 20, the first driven elastic opening arm 30, the second driven elastic opening arm 40, and the third driven elastic opening arm 50 are sequentially engaged and connected.

[0027] Further, the first engaging structure includes a first engaging and mating portion 241 provided at the first rotating end 21, the second engaging structure includes a second engaging portion 342 provided at the second elastic opening end 32 and mating with the first engaging and mating portion 241, and a second engaging and mating portion 341 provided at the second rotating end 31, the third engaging structure includes a third engaging portion 442 provided at the third elastic opening end 42 and mating with the second engaging and mating portion 341, and a third engaging and mating portion 441 provided at the third rotating end 41, and so on. The (N + 1)-th engaging structure includes an (N + 1)-th engaging portion provided at the (N + 1)-th elastic opening end and mating with the N-th engaging and mating portion. That is, the active elastic opening arm 20 is sequentially and end-to-end engaged and connected with each driven elastic opening arm. In this specific embodiment, the first engaging and mating portion 241 is engaged and connected with the second engaging portion 342, the second engaging and mating portion 341 is engaged and connected with the third engaging portion 442, and the third engaging and mating portion 441 is engaged and connected with the fourth engaging portion 542.

[0028] Further, the locking structure includes a rotating buckle 61 and a groove 62 mating with the rotating buckle 61. The rotating buckle 61 is vertically provided on the support member 10 and is rotatable. The groove 62 is provided on the active elastic opening arm 20. The groove 62 is provided with an opening 621. The cross-section of the rotating buckle 61 is rectangular. The short side of the rotating buckle 61 can enter and exit the groove 62 through the opening 621. The dimension of the long side of the rotating buckle 61 is greater than the width of the opening 621. When the first elastic opening end 22 of the active elastic opening arm 20 approaches the support member 10, the short side of the rotating buckle 61 enters the groove 62 from the opening 621. After entering, the rotating buckle 61 is rotated. The long side of the rotating buckle 61 corresponds to the opening 621. The long side of the rotating buckle 61 is engaged and connected with the groove 62, so that the active elastic opening arm 20 is locked in the contracted state. The rotating buckle 61 is rotated again. The short side of the rotating buckle 61 corresponds to the opening 621. The active elastic opening arm 20 is separated from the rotating buckle 61 under the action of the first elastic opening assembly 23, thereby opening the active elastic opening arm 20.

[0029] In this specific embodiment, the driving device 70 is located below the support member 10, and the output shaft of the driving device 70 is connected to the rotating buckle 61. Specifically, the driving device 70 is a motor.

[0030] Further, the first elastic opening assembly 23 includes a first limiting post 231 and a first elastic member 232. The first elastic member 232 is provided on the rotating shaft of the rotational connection between the active elastic opening arm 20 and the support member 10. The first limiting post 231 is provided on the support member 10. The first limiting post 231 is used to limit the opening angle of the active elastic opening arm 20. When the active elastic opening arm 20 is opened, the active elastic opening arm 20 abuts against the first limiting post 231 under the action of the first elastic member 232, thereby determining the position of the active elastic opening arm 20 when it is opened.

[0031] Similarly, the second, third, …, and Nth ejection components connected to the respective driven ejection arms have the same structure as the first ejection component 23 described above. For example, in this specific embodiment, the second ejection component includes a second limiting post 331 and a second elastic member 332. The second elastic member 332 is disposed on the rotating shaft of the driven ejection arm and the support member 10 for rotational connection. The second limiting post 331 is disposed on the support member 10, and the second limiting post 331 is used to limit the ejection angle of the first driven ejection arm 30. The third ejection component includes a third limiting post 431 and a third elastic member 432, and the fourth ejection component includes a fourth limiting post 531 and a fourth elastic member 532.

[0032] Further, a first limiting groove 233 for receiving the first limiting post 231 is provided on the active ejection arm 20, and limiting grooves for receiving their corresponding limiting posts are respectively provided on the respective driven ejection arms.

[0033] In the present invention, propeller assemblies 200 are installed on the first ejection ends 22 of the active ejection arm 20 and the second ejection ends 32 of the respective driven ejection arms. The propeller assembly 200 includes a rotation drive 201 and a propeller 202. The rotation drive 201 is fixed to the respective ejection ends (the first ejection end 22, the second ejection end 32, the third ejection end 42, …, and the (N + 1)th ejection end) of each arm (the active ejection arm and the respective driven ejection arms), and the output end of the rotation drive 201 is connected to the propeller 202. Preferably, the rotation drive 201 is a DC brushless motor, and the propeller 202 is a three-blade propeller, which can provide the drone with a faster flight speed and higher lift.

[0034] The present invention also discloses a drone, which includes the above-described arm assembly 100. In addition, the drone further includes a drive device control module 300 and a power module 400 that are sequentially located below the support member 10, and a flight control module 500, a communication module 600, a storage module 700, a positioning module 800, etc. that are sequentially located above the support member 10. The drive device control module 300 is electrically connected to the drive device 70 and is used to control the drive device 70. During use, each module can be replaced according to the needs of the user. For example, high-mobility short-distance flight or long-range low-noise flight can be selected. The positioning method of the drone can be changed by replacing the positioning module 800. Through the modular design of the drone, the high applicability of the usage conditions of the drone is achieved, and the functions of the drone have high flexibility. The drone further includes a support frame 900 for supporting on the ground.

[0035] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent shall be subject to the appended claims.

Claims

1. An arm assembly, characterized in that, It includes a support member, and an active spring-opening arm, a driven spring-opening arm, a locking structure, a driving device, a first spring-opening assembly, and a second spring-opening assembly provided on the support member; The active spring-opening arm includes a first rotating end and a first spring-opening end, the first rotating end is rotatably connected to the support member, the driven spring-opening arm includes a second rotating end and a second spring-opening end, and the second rotating end is rotatably connected to the support member. A first engaging structure is provided on the active spring-opening arm, and a second engaging structure that cooperates with the first engaging structure is provided on the driven spring-opening arm. When the first engaging structure is engaged with the second engaging structure, both the first spring-opening end and the second spring-opening end are close to the support member. At this time, the locking structure can lock the active spring-opening arm; The first spring-opening assembly is connected to the active spring-opening arm; The second spring-opening assembly is connected to the driven spring-opening arm; The driving device is connected to the locking structure, and the driving device can drive the locking structure to release the active spring-opening arm. At this time, the first spring-opening end springs away from the support member under the action of the first spring-opening assembly. The first spring-opening end springs to drive the first engaging structure to release the second engaging structure, and the second spring-opening end also moves away from the support member under the action of the second spring-opening assembly.

2. The robotic arm assembly according to claim 1, wherein The number of the driven spring-opening arms is N, where N is greater than or equal to 2, and they are respectively the first driven spring-opening arm, the second driven spring-opening arm,..., and the Nth driven spring-opening arm. The first driven spring-opening arm includes the second rotating end and the second spring-opening end, the second driven spring-opening arm includes a third rotating end and a third spring-opening end, and so on. The Nth driven spring-opening arm includes an (N + 1)th rotating end and an (N + 1)th spring-opening end. The third rotating end,..., and the Nth rotating end are all rotatably connected to the support member.

3. The robotic arm assembly according to claim 2, wherein, The second engaging structure is provided on the first driven spring-opening arm, and a third engaging structure that matches the second engaging structure is provided on the second driven spring-opening arm, and so on. The (N + 1)th engaging structure that matches the Nth engaging structure is provided on the Nth driven spring-opening arm.

4. The robotic arm assembly according to claim 3, characterized in that, The first engaging structure includes a first engaging and cooperating portion provided at the first rotating end. The second engaging structure includes a second engaging portion provided at the second spring-opening end that matches the first engaging and cooperating portion and a second engaging and cooperating portion provided at the second rotating end. The third engaging structure includes a third engaging portion provided at the third spring-opening end that matches the second engaging and cooperating portion and a third engaging and cooperating portion provided at the third rotating end, and so on. The (N + 1)th engaging structure includes an (N + 1)th engaging portion provided at the (N + 1)th spring-opening end that cooperates with the Nth engaging and cooperating portion.

5. The robotic arm assembly according to claim 1, wherein, The locking structure includes a rotating buckle and a groove that cooperates with the rotating buckle. The rotating buckle is provided on the support member, the groove is provided on the active spring-opening arm, the groove has an opening, and the rotating buckle enters and exits the groove through the opening.

6. The arm assembly according to claim 5, characterized in that, The driving device is located below the support member, and the output shaft of the driving device is connected to the rotary buckle.

7. The robotic arm assembly according to claim 1, wherein, The first elastic opening component includes a first limiting post and a first elastic member. The first elastic member is arranged on the rotating shaft of the active elastic opening arm and the support member in a rotational connection. The first limiting post is arranged on the support member, and the first limiting post is used for limiting the angle of the active elastic opening arm when it bounces open. The second elastic opening component includes a second limiting post and a second elastic member. The second elastic member is arranged on the rotating shaft of the driven elastic opening arm and the support member in a rotational connection. The second limiting post is arranged on the support member, and the second limiting post is used for limiting the angle of the driven elastic opening arm when it bounces open.

8. The robotic arm assembly according to claim 1, wherein, The first elastic opening end and the second elastic opening end are both installed with propeller assemblies.

9. The robotic arm assembly according to claim 8, wherein, The propeller assembly includes a rotary drive and a propeller.

10. A drone, characterized in that, It includes the arm assembly according to any one of claims 1 to 9.

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