Locking mechanism for rotary arm of unmanned aerial vehicle

Abstract

The locking mechanism comprises a machine body, connecting rods, sleeves, supports and spring pin assemblies, the four sets of supports are installed at the four corners of the machine body in a one-to-one correspondence mode, one end of each connecting rod is detachably connected with the outer end of the corresponding sleeve, and a clamping head is arranged at the inner end of each sleeve; the spring pin assembly is installed in the support, the clamping head is movably connected with the movable end of the spring pin assembly in a clamped mode, and the clamping head is movably connected with the support through a pin shaft. The spring pin assemblies are matched with the clamping heads on the sleeves at the ends of the connecting rods, and when the connecting rods are opened, the connecting rods are movably clamped, so that the connecting rods are locked, the connecting rods do not swing greatly in the flying process, the swing amplitude of the connecting rods is reduced, and stable and reliable flying of the unmanned aerial vehicle is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to unmanned plane technical field, in particular to a locking mechanism for unmanned plane rotary arm. BACKGROUND

[0002] Unmanned plane, the abbreviation of unmanned aircraft, is a kind of not carrying person's aircraft that is manipulated using radio remote control equipment and self-provided program control device. With the continuous progress of technology and the continuous expansion of application field, unmanned plane is more and more widely used in military, civil and other fields. Among them, multi-rotor unmanned plane, also called multi-axis aircraft or multi-rotor helicopter, is a kind of unmanned aircraft that realizes vertical take-off and hovering function by multiple rotors generating lift at the same time, and multi-rotor unmanned plane is mainly composed of power system, flight control system, body system, airborne equipment, image transmission equipment and remote controller, in order to facilitate storage, the rotors of multi-rotor unmanned plane need to be designed as foldable, and the rotors are connected in the way of hinging at present, but the rotors are connected with the body in the way of hinging, flight attitude is unstable, which affects the overall structural strength and flight stability of unmanned plane, so it needs to be improved. SUMMARY

[0003] Therefore, it is necessary to provide a locking mechanism for unmanned plane rotary arm aiming at the above problems.

[0004] A locking mechanism for unmanned plane rotary arm, comprising a body, a connecting rod, a sleeve, a bracket and a spring pin assembly, four groups of brackets are installed at the four corner positions of the body one by one, one end of the connecting rod is detachably connected with the outer end of the sleeve, the inner end of the sleeve is provided with a clamping joint, the spring pin assembly is installed in the bracket, the clamping joint is movably clamped with the movable end of the spring pin assembly, and the clamping joint and the bracket are movably connected through a pin shaft.

[0005] Preferably, the lower part of the body is provided with a supporting leg.

[0006] Preferably, the bracket comprises a first bracket and a second bracket, the first bracket and the second bracket are arranged side by side and spaced apart, and are connected with the body through bolts, and the spring pin assembly is installed between the first bracket and the second bracket.

[0007] Preferably, the spring pin assembly comprises a spring column, a fixed cross bar and a movable cross bar, the fixed cross bar is fixedly installed between the first bracket and the second bracket, the first bracket and the second bracket are provided with a sliding groove, the movable cross bar is movably inserted into the sliding groove, the spring column is connected between the fixed cross bar and the movable cross bar, and the clamping joint is movably clamped with the movable cross bar.

[0008] Preferably, the rear end of the clamping joint is movably connected with the first support and the second support through a pin shaft, and the front end of the clamping joint is provided with a stepped platform.

[0009] Preferably, the rear end of the stepped platform is chamfered.

[0010] The utility model discloses the beneficial effect lies in: utilize spring pin assembly cooperation link end -of -arm's sleeve on the clamping joint, when link opening, the movable clamping link, make link be locked, make link in the flight process, will not swing greatly, reduce link swing amplitude, ensure that unmanned aerial vehicle flies stably reliable. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is a kind of locking mechanism for the rotatable arm of unmanned aerial vehicle for one embodiment perspective view;

[0012] Fig. 2 It is a kind of locking mechanism for the rotatable arm of unmanned aerial vehicle explosion schematic view. DETAILED DESCRIPTION

[0013] To make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings.In the following description, a lot of specific details are set forth in order to give a full understanding of the utility model.However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, therefore the utility model is not limited by the following disclosed specific embodiments.

[0014] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be a middle element.When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element.The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs.Any terms used herein in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model.The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0016] As Figs. 1-2As shown, a unmanned aerial vehicle arm locking mechanism, including body 1, connecting rod 2, sleeve 3, bracket 4 and spring pin assembly 5, four said bracket 4 one by one corresponding installation in body 1 four corner position, one end of the connecting rod 2 and the outer end of the sleeve 3 can be detached connection, the inner end of the sleeve 3 is provided with a card joint 31, the spring pin assembly 5 is installed in the bracket 4, the card joint 31 and the movable end of the spring pin assembly 5 are movably connected, the card joint 31 and the bracket 4 are movably connected through the pin shaft. Specifically, the body 1 adopts aluminum alloy or injection molding frame structure, which is used for accommodating electronic components of unmanned aerial vehicle. The connecting rod 2 is the main body of the rotor, one end of which is connected to the body 1, and the other end is connected to the rotor (not shown in the figure). In order to facilitate storage, we designed the connecting rod 2 to be movably connected with the bracket 4 through the sleeve 3, so that the connecting rod 2 can be folded. In order to ensure the stability of the unmanned aerial vehicle flight attitude, we integrated the spring pin assembly 5 in the bracket 4. By using the spring pin assembly 5, the card joint 31 on the sleeve 3 at the end of the connecting rod 2, when the connecting rod 2 is opened, the movable card joint 2 is locked, so that the connecting rod 2 is locked when it is opened, so that the connecting rod 2 does not swing greatly during flight, reduces the swing amplitude of the connecting rod 2, and ensures the stability and reliability of the unmanned aerial vehicle flight. When folding is needed, compress the spring pin assembly 5, so that the movable end of the card joint 31 and the spring pin assembly 5 are separated, so that the connecting rod 2 can rotate around the bracket 4. After folding several connecting rods 2, the volume of the unmanned aerial vehicle can be reduced, and the storage can be facilitated.

[0017] As shown in the figure, Figs. 1-2 The lower part of the body 1 is provided with a support 11, which is used to support the body 1 when the unmanned aerial vehicle lands.

[0018] As shown in the figure, Figs. 1-2 The bracket 4 includes a first bracket 41 and a second bracket 42, which are arranged side by side and spaced apart, and are connected to the body 1 by bolts. The spring pin assembly 5 is installed between the first bracket 41 and the second bracket 42. Specifically, the first bracket 41 and the second bracket 42 are designed side by side to avoid using a whole structure, which reduces the difficulty of manufacturing the bracket 4 as a whole, and can be directly manufactured by sheet metal, which is low in cost. The first bracket 41 and the second bracket 42 are arranged side by side to reserve installation space for the spring pin assembly 5, which is more simple and convenient to assemble.

[0019] As shown in the figure, Fig. 2As shown, the spring pin assembly 5 comprises a spring column 51, a fixed crossbar 52 and a movable crossbar 53, the fixed crossbar 52 is fixedly installed between the first support 41 and the second support 42, the first support 41 and the second support 42 are provided with a sliding groove 411, the movable crossbar 53 is movably inserted into the sliding groove 411, the spring column 51 is connected between the fixed crossbar 52 and the movable crossbar 53, and the clamping head 31 is movably clamped with the movable crossbar 53. Specifically, when the connecting rod 2 is opened, the movable crossbar 53 is displaced along the sliding groove 511 under the spring force of the spring column 51, so that the movable crossbar 53 is clamped with the front end of the clamping head 31, when it is needed to be folded and stored, the movable crossbar 53 can be manually pulled back to compress the spring column 51, so that the clamping head 31 is separated from the movable crossbar 53, and the folding and storage is completed.

[0020] As shown in the drawings, Figs. 1-2 The rear end of the clamping head 31 is movably connected with the first support 41 and the second support 42 through a pin shaft, the front end of the clamping head 31 is provided with a stepped platform 32, and the movable crossbar 53 is movably clamped on the stepped platform 32. Specifically, the stepped platform 32 cooperates with the movable crossbar 53 to stop, so that the connecting rod 2 cannot rotate and swing, and the stability of the flight attitude of the unmanned aerial vehicle is maintained.

[0021] As shown in the drawings, Fig. 2 The rear end of the stepped platform 32 is rounded, so that the clamping head 31 rotates more smoothly around the movable crossbar 53 and does not jam.

[0022] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the application patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the application patent should be subject to the appended claims.

Claims

1. A locking mechanism for a drone rotary arm, characterized by: The body, connecting rod, sleeve, bracket and spring pin assembly, four sets of the bracket corresponding to the installation of the body four corner position, one end of the connecting rod and the outer end of the sleeve can be detached connection, the inner end of the sleeve is provided with a clamping joint, the spring pin assembly is installed in the bracket, the clamping joint and the movable end of the spring pin assembly are movably connected, the clamping joint and the bracket are movably connected through the pin shaft.

2. The locking mechanism for the unmanned aerial vehicle's rotating arm according to claim 1, characterized in that: The lower part of the body is provided with a supporting leg.

3. The locking mechanism for the unmanned aerial vehicle arm according to claim 1, wherein: The bracket includes a first bracket and a second bracket, which are arranged side by side and are connected to the body by bolts, and the spring pin assembly is installed between the first bracket and the second bracket.

4. The locking mechanism for the unmanned aerial vehicle's rotating arm according to claim 3, characterized in that: The spring pin assembly includes a spring column, a fixed crossbar and a movable crossbar, the fixed crossbar is fixedly installed between the first bracket and the second bracket, the first bracket and the second bracket are provided with a sliding groove, the movable crossbar is movably inserted into the sliding groove, the spring column is connected between the fixed crossbar and the movable crossbar, and the clamping joint is movably connected with the movable crossbar.

5. The locking mechanism for the unmanned aerial vehicle's rotating arm according to claim 4, characterized in that: The rear end of the clamping joint is movably connected with the first bracket and the second bracket through the pin shaft, and the front end of the clamping joint is provided with a stepped platform, and the movable crossbar is movably connected with the stepped platform.

6. The locking mechanism for the unmanned aerial vehicle's rotating arm according to claim 5, characterized in that: The rear end of the stepped platform is rounded.

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