阅读说明：本技术 支臂折叠机构、无人机支臂和无人机 (Support arm folding mechanism, unmanned aerial vehicle support arm and unmanned aerial vehicle ) 是由 蔡茂林 郭向群 舒伟略 李群 常建 杨承章 刘凡宾 辛浩达 马国鹏 余猛 于 2020-05-08 设计创作，主要内容包括：本发明涉及无人机的技术领域,尤其涉及一种支臂折叠机构、无人机支臂和无人机。支臂折叠机构包括第一、二支臂连接件和锁合组件,第一、二支臂连接件转动连接,锁合组件位于第一、二支臂连接件的转动连接处的异侧,锁合组件包括第一、二限位组件,第二限位组件与第二支臂连接件固定连接,第一限位组件包括第一锁合件和摇臂,第一锁合件转动连接于摇臂上,摇臂与第一支臂连接件相对转动设置,第一锁合件上可拆卸连接有第二锁合件,当第一锁合件锁合在第二限位组件时,第二锁合件用于锁定第一锁合件与摇臂的相对转动角度。该申请解决了无人机体积增大而导致运输不便的问题,实现了通过折叠来缩小无人机支臂的占用体积的技术效果。(The invention relates to the technical field of unmanned aerial vehicles, in particular to a support arm folding mechanism, an unmanned aerial vehicle support arm and an unmanned aerial vehicle. The support arm folding mechanism comprises a first support arm connecting piece, a second support arm connecting piece and a locking assembly, the first support arm connecting piece and the second support arm connecting piece are connected in a rotating mode, the locking assembly is located on the first side of the rotating joint of the second support arm connecting piece, the locking assembly comprises a first limiting assembly and a second limiting assembly, the second limiting assembly is fixedly connected with the second support arm connecting piece, the first limiting assembly comprises a first locking piece and a rocker arm, the first locking piece is connected to the rocker arm in a rotating mode, the rocker arm and the first support arm connecting piece rotate relatively, the second locking piece is detachably connected to the first locking piece, and when the first locking piece is locked on the second limiting assembly, the second locking piece is used for locking the relative rotation angle of the first locking piece and the. This application has solved unmanned aerial vehicle volume increase and has leaded to the inconvenient problem of transportation, has realized reducing the technological effect of the volume that occupies of unmanned aerial vehicle support arm through folding.)

1. A support arm folding mechanism is characterized by comprising a first support arm connecting piece, a second support arm connecting piece and a locking assembly, wherein the first support arm connecting piece is used for being fixedly connected with a first support arm, the second support arm connecting piece is used for being fixedly connected with a second support arm, the first support arm connecting piece is rotatably connected with the second support arm connecting piece,

the locking assembly is positioned on the opposite side of the rotary joint of the first support arm connecting piece and the second support arm connecting piece, the locking assembly comprises a first limiting assembly and a second limiting assembly (40), the second limiting assembly (40) is fixedly connected with the second support arm connecting piece,

the first limiting component comprises a first locking piece (35) and a rocker arm (34), a first end (352) of the first locking piece (35) is used for being locked with the second limiting component (40) to limit the first limiting component and the second limiting component (40) to be relatively far away, the first locking piece (35) is rotatably connected onto the rocker arm (34), the rocker arm (34) and the first arm connecting piece are relatively rotatably arranged, a second locking piece is detachably connected onto the first locking piece (35), and when the first locking piece (35) is locked onto the second limiting component (40), the second locking piece is used for locking the relative rotation angle of the first locking piece (35) and the rocker arm (34).

2. The arm folding mechanism according to claim 1, characterized in that the axis of rotation of the first locking element (35) relative to the rocker (34) is a first axis of rotation and the axis of rotation of the first locking element (35) relative to the first arm linkage is a second axis of rotation, the first axis of rotation being parallel to the second axis of rotation.

3. The arm folding mechanism according to claim 2, characterized in that when the first locking element (35) is locked to the second stop member (40), the second stop member (40) exerts a first force on the first end (352) of the first locking element (35), the first force generating a first moment relative to a first axis of rotation, the first moment acting to move the first end (352) of the first locking element (35) towards the second arm linkage.

4. The arm folding mechanism according to claim 2 or 3, characterized in that when the first locking element (35) is locked to the second stop element (40), the first locking element (35) exerts a second force on the rocker arm (34) at the first axis of rotation, the second force generating a second moment on the second axis of rotation, the second moment being used to move the rocker arm (34) towards the first arm linkage.

5. Arm folding mechanism according to claim 4, characterized in that the contact position of the first locking element (35) with the second stop element (40) forms a first line with a first axis of rotation, the second axis of rotation and the first arm connection being situated on opposite sides of the first line, respectively.

6. An arm folding mechanism according to claim 1 or 2 or 3 or 5, characterized in that the second locking element comprises a resilient pin (361) and a resilient ring (362), the resilient pin (361) passing through a resilient pin hole (351) at the second end of the first locking element (35), the resilient ring (362) being fixedly connected to one end of the resilient pin (361), the resilient ring (362) being adapted to lock the resilient pin (361) to the first locking element (35).

7. An arm folding mechanism according to claim 1, 2, 3 or 5, characterized in that the first locking member (35) is rotatably connected to the swing arm (34) via a first rotating shaft (37), the first locking member (35) is in threaded connection with the first rotating shaft (37), and the first rotating shaft (37) is threaded on the swing arm (34).

8. Arm folding mechanism according to claim 1 or 2 or 3 or 5, characterized in that the first arm connection element is rotatably connected to the second arm connection element by an arm connection axis (14), that the first side of the second arm connection element facing the first arm connection element is provided with a second arm stop (22), that the first arm is provided with the arm connection axis (14) in an acute angle portion (11), that the side of the acute angle portion (11) facing away from the second arm connection element forms a first arm stop when the first stop element is locked to the second stop element (40), and that the first side (12) abuts the second arm stop (22) when the first arm connection element and the second arm connection element are opened to a maximum angle.

9. An unmanned aerial vehicle arm comprising a first arm, a second arm and the arm folding mechanism of any one of claims 1-8.

10. A drone, characterized in that it comprises a drone boom according to claim 9.

Technical Field

The invention relates to the technical field of unmanned aerial vehicles, in particular to a support arm folding mechanism, an unmanned aerial vehicle support arm and an unmanned aerial vehicle.

Background

With the rapid development of science and technology, in recent years, the application and development of unmanned aerial vehicles in various industries are increasingly wide, and at the present stage, the application of the unmanned aerial vehicles relates to the application in the fields of aerial photography, agriculture and forestry plant protection, geological exploration, electric power inspection, oil and gas pipeline inspection, highway accident management, forest fire prevention inspection, polluted environment inspection, emergency rescue and rescue, rescue and relief, coastline inspection and the like.

Many rotor unmanned aerial vehicle use in the middle of these above-mentioned trades are used more, and along with trade demand application, the unmanned aerial vehicle load will be bigger and bigger, to many rotor unmanned aerial vehicle, along with the increase of load, many rotor unmanned aerial vehicle's wheel base will increase, along with the increase of wheel base, many rotor unmanned aerial vehicle's support arm will lengthen, and lengthened unmanned aerial vehicle support arm will make whole unmanned aerial vehicle's complete machine volume increase, this is very unfavorable to the transportation transition in-process.

Disclosure of Invention

In view of this, the invention provides a support arm folding mechanism, an unmanned aerial vehicle support arm and an unmanned aerial vehicle, which at least partially solve the problem of inconvenient transportation caused by the increase of the size of the unmanned aerial vehicle in the prior art.

In a first aspect, the present invention provides a support arm folding mechanism, comprising a first support arm connecting member, a second support arm connecting member and a locking assembly, wherein the first support arm connecting member is used for being fixedly connected with a first support arm, the second support arm connecting member is used for being fixedly connected with a second support arm, the first support arm connecting member is rotatably connected with the second support arm connecting member,

the locking component is positioned on the opposite side of the rotary joint of the first support arm connecting piece and the second support arm connecting piece, the locking component comprises a first limiting component and a second limiting component, the second limiting component is fixedly connected with the second support arm connecting piece,

the first limiting assembly comprises a first locking piece and a rocker arm, the first end of the first locking piece is used for being locked with the second limiting assembly to limit the first limiting assembly to be relatively far away from the second limiting assembly, the first locking piece is rotatably connected onto the rocker arm, the rocker arm and the first support arm connecting piece are relatively rotatably arranged, the first locking piece is detachably connected with the second locking piece, and when the first locking piece is locked on the second limiting assembly, the second locking piece is used for locking the relative rotation angle of the first locking piece and the rocker arm.

According to the support arm folding mechanism provided by the invention, the first support arm connecting piece fixedly connected with the first support arm and the second support arm connecting piece fixedly connected with the second support arm are rotatably connected, so that the relative rotation of the first support arm and the second support arm in the transportation process can be realized, and the occupied volume of the support arm of the unmanned aerial vehicle is further reduced by folding. And the first locking piece and the second limiting component of the first limiting component are utilized to limit the first limiting component and the second limiting component to be relatively far away, so that the first support arm connecting piece and the second support arm connecting piece cannot be opened. The relative rotation angle of the first locking piece and the rocker arm is limited by the second locking piece, so that the first locking piece cannot swing and cannot be separated from the second limiting component, the reliable locking of the second limiting component and the first locking piece is further guaranteed, and finally the first support arm and the second support arm are relatively fixed when the unmanned aerial vehicle is used.

According to the preferred embodiment of the present invention, the rotation axis of the first locking element and the rocker arm relative to each other is a first rotation axis, the rotation axis of the first locking element and the first arm connecting element relative to each other is a second rotation axis, and the first rotation axis and the second rotation axis are parallel.

According to a further preferred embodiment of the present invention, when the first locking element is locked to the second position-limiting element, the second position-limiting element generates a first force on the first end of the first locking element, and the first force generates a first moment relative to the first rotation axis, and the first moment is used for moving the first end of the first locking element toward the second arm connecting element.

According to a further preferred embodiment of the present invention, when the first locking element is locked at the second position-limiting member, the first locking element applies a second acting force to the rocker arm at the first rotation axis, and the second acting force generates a second moment to the second rotation axis, and the second moment is used for moving the rocker arm towards the first arm link.

According to a still further preferred embodiment of the present invention, the contact position of the first locking element with the second position-limiting element and the first rotation axis form a first line, and the second rotation axis and the first arm connecting element are respectively located on opposite sides of the first line.

According to a preferred embodiment of the present invention, the second locking element comprises a resilient pin and a resilient ring, the resilient pin is inserted into a resilient pin hole at the second end of the first locking element, the resilient ring is fixedly connected to one end of the resilient pin, and the resilient ring is used for locking the resilient pin with the first locking element.

According to the preferred embodiment provided by the invention, the first locking piece is rotatably connected with the rocker arm through a first rotating shaft, the first locking piece is in threaded connection with the first rotating shaft, and the first rotating shaft penetrates through the rocker arm.

According to a preferred embodiment of the present invention, the first arm connecting member is rotatably connected to the second arm connecting member via an arm connecting shaft, a second arm limiting table is provided on a first side of the second arm connecting member facing the first arm connecting member, the first arm is provided with an acute angle portion at a position thereof, when the first limiting table is locked to the second limiting member, a first arm limiting table is formed on a side of the acute angle portion facing away from the second arm connecting member, and when the first arm connecting member and the second arm connecting member are opened to a maximum angle, the first side edge abuts against the second arm limiting table.

In a second aspect, the invention provides an unmanned aerial vehicle support arm, which comprises a first support arm, a second support arm and any one of the support arm folding mechanisms.

Because the unmanned aerial vehicle support arm that this aspect provided, included foretell support arm folding mechanism, consequently had foretell support arm folding mechanism's technological effect, no longer repeated here.

In a second aspect, the invention provides an unmanned aerial vehicle, which comprises the unmanned aerial vehicle support arm.

Because the unmanned aerial vehicle that this aspect provided, included foretell unmanned aerial vehicle support arm, consequently had the technological effect of the above-mentioned unmanned aerial vehicle support arm, no longer repeated here.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a perspective view of a support arm folding mechanism according to an embodiment of the present invention;

FIG. 2 is a top view of the arm folding mechanism according to the first embodiment;

FIG. 3 is a front view of a support arm folding mechanism according to a first embodiment;

FIG. 4 is a front view of the arm folding mechanism of the first embodiment in an open state of the first arm linkage and the second arm linkage;

fig. 5 is a schematic perspective view of the first position-limiting assembly according to the first embodiment, in which the second locking assembly is not shown.

The various reference numbers in the figures have the following meanings:

10. a first support arm bushing; 11. an acute angle portion; 12. a first side edge; 13. a first arm rivet; 14. a support arm connecting shaft; 20. a second support arm bushing; 21. a second support arm rivet; 22. a second support arm limiting table; 31. A transition mounting plate; 32. a hinged seat; 33. a first connecting plate; 34. a rocker arm; 35. a first locking member; 351. An elastic pin hole; 352. a first end; 361. an elastic pin; 362. an elastic ring; 37-a first shaft; 40. a second limiting component; 41. an arc-shaped plate.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

It should be noted that, in the case of no conflict, the features in the following embodiments and examples may be combined with each other; moreover, all other embodiments that can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making an invasive task are intended to be within the scope of the present disclosure.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure of the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.