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。支臂折叠机构包括内、外支臂安装件和锁定总成,内、外支臂安装件铰接,锁定总成位于内、外支臂安装件的铰接处的异侧,锁定总成包括第一锁定组件和外支臂锁扣,外支臂锁扣与外支臂安装件固定连接,第一锁定组件包括内支臂锁扣、自锁组件和摆臂,内支臂锁扣的第一端用于与外支臂锁扣锁定,内支臂锁扣铰接于摆臂上,摆臂与内支臂安装件相对旋转设置,自锁组件与内支臂安装件相对固定设置,自锁组件包括活动锁定件,当内支臂锁扣锁定在外支臂锁扣时,活动锁定件用于锁定摆臂与内支臂安装件的相对旋转角度。该申请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 an inner support arm installation piece, an outer support arm installation piece and a locking assembly, wherein the inner support arm installation piece and the outer support arm installation piece are hinged, the locking assembly is positioned on the inner side and the opposite side of the hinged position of the outer support arm installation piece, the locking assembly comprises a first locking component and an outer support arm lock catch, the outer support arm lock catch is fixedly connected with the outer support arm installation piece, the first locking component comprises an inner support arm lock catch, a self-locking component and a swing arm, the first end of the inner support arm lock catch is used for being locked with the outer support arm lock catch, the inner support arm lock catch is hinged on the swing arm, the swing arm and the inner support arm installation piece are arranged in a relative rotating mode, the self-locking component and the inner support arm installation piece are arranged in a relatively fixed mode, the self-locking component comprises a movable locking piece, and when the inner. This application 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, comprising an inner support arm mounting member for fixed connection with an inner support arm (50), an outer support arm mounting member for fixed connection with an outer support arm, and a locking assembly, the inner support arm mounting member being hinged to the outer support arm mounting member,

the locking assembly is positioned on the opposite side of the hinged part of the inner support arm mounting piece and the outer support arm mounting piece, the locking assembly comprises a first locking component and an outer support arm lock catch (40), the outer support arm lock catch (40) is fixedly connected with the outer support arm mounting piece,

first locking assembly includes interior support arm hasp (35), auto-lock subassembly and swing arm (34), the first end of interior support arm hasp (35) be used for with outer support arm hasp (40) lock in order to restrict first locking assembly with outer support arm hasp (40) is kept away from relatively, interior support arm hasp (35) articulate in on swing arm (34), swing arm (34) with interior support arm installed part relative rotation sets up, auto-lock subassembly with interior support arm installed part relatively fixed sets up, the auto-lock subassembly includes activity locking piece, works as interior support arm hasp (35) locking is in when outer support arm hasp (40), activity locking piece is used for locking swing arm (34) with the relative rotation angle of interior support arm installed part.

2. The arm folding mechanism according to claim 1, characterized in that the axis of rotation of the inner arm latch (35) relative to the swing arm (34) is a first axis of rotation and the axis of rotation of the inner arm latch (35) relative to the inner arm mount 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 inner arm latch (35) is locked to the outer arm latch (40), the outer arm latch (40) generates a first resistance to the first end of the inner arm latch (35), the first resistance creating a first torque relative to a first axis of rotation, the first torque acting to move the first end of the inner arm latch (35) towards the outer arm mount.

4. Arm folding mechanism according to claim 2 or 3, characterized in that when the inner arm latch (35) is locked to the outer arm latch (40), the inner arm latch (35) exerts a second force on the swing arm (34) at the first axis of rotation, which second force creates a second torque on the second axis of rotation, which second torque is used to move the swing arm (34) towards the inner arm mount.

5. Arm folding mechanism according to claim 4, characterized in that the contact position and the first axis of rotation of the inner arm catch (35) with the outer arm catch (40) form a first line, the second axis of rotation and the inner arm mount being located on opposite sides of the first line, respectively.

6. The arm folding mechanism according to claim 1 or 2 or 3 or 5, characterized in that the self-locking assembly comprises a self-locking base (361), the movable locking member comprises a sliding block (365) and a locking tongue (367), the sliding block (365) is slidably connected to the self-locking base (361), the locking tongue (367) is fixedly installed on the sliding block (365), the sliding block (365) is further connected with the self-locking base (361) through an elastic element (363), and the elastic element (363) is used for driving the sliding block (365) so that the locking tongue (367) is overlapped at the free end of the swing arm (34).

7. The arm folding mechanism according to claim 6, characterized in that when the locking tongue (367) is overlapped at the free end of the swing arm (34), the tangent value of the included angle between the contact surface of the locking tongue (367) and the free end of the swing arm (34) and the normal plane of the swing arm (34) is smaller than the friction coefficient between the locking tongue (367) and the swing arm (34).

8. Arm folding mechanism according to claim 1 or 2 or 3 or 5, characterized in that the inner arm mounting is hinged to the outer arm mounting by an arm connecting axis (14), that a first side of the outer arm mounting facing the inner arm mounting is provided with an outer arm stop (22), that the inner arm (50) is provided with the arm connecting axis (14) at an acute angle (11), that the side of the acute angle (11) facing away from the outer arm mounting forms an inner arm stop when the first locking element is locked to the outer arm catch (40), and that the first side (12) abuts the outer arm stop (22) when the inner arm mounting is opened to a maximum angle to the outer arm mounting.

9. Unmanned aerial vehicle arm, characterized in that, includes inner arm (50), outer 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 of unmanned aerial vehicles in various industries is increasingly widespread, and at the present stage, the application of unmanned aerial vehicles relates to 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 boom folding mechanism comprising an inner boom mount for fixed connection to an inner boom, an outer boom mount for fixed connection to an outer boom, and a locking assembly, the inner boom mount being hingedly connected to the outer boom mount,

the locking assembly is positioned on the opposite side of the hinged part of the inner support arm mounting piece and the outer support arm mounting piece, the locking assembly comprises a first locking component and an outer support arm lock catch, the outer support arm lock catch is fixedly connected with the outer support arm mounting piece,

the first locking assembly comprises an inner support arm lock catch, a self-locking assembly and a swing arm, the first end of the inner support arm lock catch is used for being locked with the outer support arm lock catch to limit the relative distance between the first locking assembly and the outer support arm lock catch, the inner support arm lock catch is hinged to the swing arm, the swing arm and the inner support arm installation piece are arranged in a relative rotating mode, the self-locking assembly and the inner support arm installation piece are arranged in a relatively fixed mode, the self-locking assembly comprises a movable locking piece, and when the inner support arm lock catch is locked at the outer support arm lock catch, the movable locking piece is used for locking the relative rotating angle between the swing arm and the inner support arm installation piece.

According to the support arm folding mechanism provided by the invention, the inner support arm mounting piece fixedly connected with the inner support arm and the outer support arm mounting piece fixedly connected with the outer support arm are hinged, so that the relative rotation of the inner support arm and the outer 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. Moreover, the inner support arm lock catch and the outer support arm lock catch of the first locking component are utilized to limit the first locking component and the outer support arm lock catch to be relatively far away, so that the inner support arm mounting piece and the outer support arm mounting piece cannot be opened. Through the relative rotation angle of auto-lock subassembly restriction swing arm and interior support arm installed part for the swing arm can't swing, and then makes interior support arm hasp unable motion, can't break away from outer support arm hasp, and then has guaranteed the reliable locking of outer support arm hasp and interior support arm hasp, thereby finally ensures the relative fixed of interior support arm and outer support arm when unmanned aerial vehicle uses.

According to a preferred embodiment of the present invention, the rotation axis of the inner arm lock catch relative to the swing arm is a first rotation axis, the rotation axis of the inner arm lock catch relative to the inner arm mounting member is a second rotation axis, and the first rotation axis is parallel to the second rotation axis.

According to a further preferred embodiment of the present invention, the outer arm lock generates a first resistance force to the first end of the inner arm lock when the inner arm lock is locked to the outer arm lock, the first resistance force forming a first torque with respect to the first rotation axis, the first torque being for moving the first end of the inner arm lock to the outer arm mount.

According to a further preferred embodiment of the present invention, the inner arm lock applies a second force to the swing arm at the first axis of rotation when the inner arm lock is locked to the outer arm lock, the second force creating a second torque to the second axis of rotation, the second torque being used to move the swing arm towards the inner arm mount.

According to a still further preferred embodiment of the present invention, the contact position of the inner arm lock catch with the outer arm lock catch and the first axis of rotation form a first line, and the second axis of rotation and the inner arm mount are located on opposite sides of the first line, respectively.

According to a preferred embodiment provided by the present invention, the self-locking assembly includes a self-locking base, the movable locking member includes a sliding block and a locking tongue, the sliding block is slidably connected to the self-locking base, the locking tongue is fixedly mounted on the sliding block, the sliding block is further connected to the self-locking base through an elastic element, and the elastic element is used for driving the sliding block so that the locking tongue is overlapped with the free end of the swing arm.

According to the preferred embodiment provided by the invention, when the lock tongue is lapped at the free end of the swing arm, the tangent value of the included angle between the contact surface of the lock tongue and the free end of the swing arm and the normal plane of the swing arm is smaller than the friction coefficient between the lock tongue and the swing arm.

According to a preferred embodiment of the present invention, the inner arm mounting member is hinged to the outer arm mounting member by an arm connecting shaft, a first side of the outer arm mounting member facing the inner arm mounting member is provided with an outer arm stopper, a portion of the inner arm on which the arm connecting shaft is provided is an acute angle portion, when the first locking member is locked by the outer arm locking member, a side of the acute angle portion facing away from the outer arm mounting member forms the inner arm stopper, and when the inner arm mounting member and the outer mounting member are opened to a maximum angle, the first side abuts the outer arm stopper.

In a second aspect, the invention provides an unmanned aerial vehicle support arm, which comprises an inner support arm, an outer 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 inner arm mount and the outer arm mount;

FIG. 5 is a schematic perspective view of the outer arm latch and the first locking member in a locked state according to the first embodiment;

FIG. 6 is a front view of FIG. 5;

fig. 7 is a schematic structural diagram of a locking assembly in the first embodiment.

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

10. an inner support arm casing; 11. an acute angle portion; 12. a first side edge; 13. an inner support arm rivet; 14. a support arm connecting shaft; 20. an outer support arm casing; 21. an outer support arm rivet; 22. an outer support arm limiting table; 32. a hinged seat; 34. swinging arms; 35. locking the inner support arm; 352. a first hook portion; 361. a self-locking base; 362. a toggle pin; 363. an elastic element; 364. a spring guide post; 365. a slider; 367. a latch bolt; 368. a sliding groove stopper; 369. a limiting block; 40. locking the outer support arm; 41. a second hook portion; 50. an inner support arm.

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 any creative effort fall 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, 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.