CN107499494B

CN107499494B - Folding mechanism and unmanned aerial vehicle comprising same

Info

Publication number: CN107499494B
Application number: CN201710642301.8A
Authority: CN
Inventors: 陈阳; 李震灏; 杨伟
Original assignee: Xiamen Zhirui Zhikong Dixin Technology Co ltd
Current assignee: Xiamen zhiruizhi Dixin Technology Co.,Ltd.
Priority date: 2017-07-31
Filing date: 2017-07-31
Publication date: 2021-12-31
Anticipated expiration: 2037-07-31
Also published as: CN107499494A

Abstract

The invention provides a folding mechanism and an unmanned aerial vehicle comprising the same, wherein the folding mechanism comprises a limiting shell and a movable shell; the limiting shell comprises two limiting plates, a locking unit and a pressing part which are oppositely arranged; the movable shell comprises two oppositely arranged limiting lugs, the two limiting lugs are respectively provided with a clamping part, and the movable shell is hinged between the two oppositely arranged limiting plates; the opposite surfaces of the two limiting plates are respectively provided with a sliding chute, and the locking unit comprises a pre-tightening part and a sliding shaft; the pre-tightening component comprises an elastic piece and guide posts, the guide posts are arranged in the sliding grooves, two ends of the sliding shaft are respectively sleeved on the two guide posts, the elastic piece is sleeved on the guide posts, and one end of the elastic piece is connected with the sliding shaft to generate pre-tightening force towards the clamping part; the pressing component is arranged in the middle of the sliding shaft.

Description

Folding mechanism and unmanned aerial vehicle comprising same

Technical Field

The invention relates to the field of unmanned aerial vehicle manufacturing, in particular to a folding mechanism and an unmanned aerial vehicle comprising the same.

Background

Unmanned aerial vehicle, especially many rotor unmanned aerial vehicle, its horn and fuselage adopt the integral type design usually, and such project organization has increased unmanned aerial vehicle's area undoubtedly when unmanned aerial vehicle is in not user state, is unfavorable for putting and carrying of unmanned aerial vehicle, and consequently unmanned folding mechanism about the unmanned aerial vehicle horn takes place at the same time.

Many rotor unmanned aerial vehicle can produce comparatively obvious vibration by the influence of each rotor at the flight in-process, and folding action can be accomplished to current folding mechanism, conveniently receive and release list still not perfect to the design of avoiding of vibration, has influenced unmanned aerial vehicle's steady flight.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a folding mechanism which comprises a limiting shell and a movable shell; the limiting shell comprises two limiting plates, a locking unit and a pressing part which are oppositely arranged;

the movable shell comprises two oppositely arranged limiting lugs, the two limiting lugs are respectively provided with a clamping part, the movable shell is arranged between the two oppositely arranged limiting plates, and the movable shell is hinged with the limiting plates;

the opposite surfaces of the two limiting plates are respectively provided with a sliding chute, and the locking unit comprises a pre-tightening part and a sliding shaft; the pre-tightening component comprises an elastic piece and guide posts, the guide posts are arranged in the sliding grooves, two ends of the sliding shaft are respectively sleeved on the two guide posts, the elastic piece is sleeved on the guide posts, and one end of the elastic piece is connected with the sliding shaft to generate pre-tightening force towards the clamping part; the pressing component is arranged in the middle of the sliding shaft;

corresponding sliding guide platforms are respectively arranged at the positions, corresponding to the sliding grooves of the limiting plate, of the two ends of the sliding shaft, and the sliding shaft can be movably arranged between the sliding grooves of the limiting plate through the matching of the sliding guide platforms and the sliding grooves;

and two ends of the sliding shaft are respectively provided with corresponding open grooves, and the two ends of the sliding shaft are sleeved on the guide columns through the matching of the open grooves and the corresponding guide columns.

As a further improvement, when the folding mechanism is in a locking state, the horizontal heights of the two sliding grooves at the end close to the clamping portion are the same, and the horizontal height of the two sliding grooves at the end close to the clamping portion is 0.5-5mm higher than the horizontal height of the clamping portion.

As a further improvement, when the folding mechanism is in a locking state, the horizontal heights of the two sliding grooves at the end close to the clamping portion are the same, and the horizontal height of the two sliding grooves at the end close to the clamping portion is 1-2mm higher than the horizontal height of the clamping portion.

As a further improvement, the limiting lug further comprises a limiting block, the limiting block is arranged on the inner side wall of the clamping portion, and the limiting block is arranged at an opening of the clamping portion.

As a further improvement, two sides of the limiting block are inclined planes on the traveling path of the sliding shaft.

The utility model provides an unmanned aerial vehicle, includes center plate, a plurality of horn and foretell folding mechanism, a plurality of horns evenly distributed in the center plate edge, folding mechanism locates a plurality of horns with between the center plate.

Compared with the prior art, the invention has the following advantages:

the movable shell is hinged with the limiting shell, and the sliding shaft is matched with the clamping part for limiting in a clamping manner, so that the folding action is realized;

be equipped with the pretension part in the spacing casing to through setting up "spout distance the level of the nearer one end of joint portion, with the difference in height of the level of joint portion provides last stable ascending pretension, has exempted from the unmanned aerial vehicle vibration because of the rotor rotation leads to, simple structure, function are easy going.

Drawings

Fig. 1 is a schematic view of the overall structure of a folding mechanism of the present invention.

Fig. 2 is a schematic view of the locking state of a folding mechanism of the present invention.

Fig. 3 is a schematic view of an unlocked state of a hidden side limiting plate of a folding mechanism according to the present invention.

Fig. 4 is a schematic diagram of the overall structure of the unmanned aerial vehicle with the folding mechanism.

Description of the main elements

Limit housing 1

Limiting plate 110

Chute 111

Pretensioning part 121

Elastic member 121A

Guide post 121B

Sliding shaft 122

Pressing member 130

Movable casing 2

Spacing ear 210

Clip part 211

The stop block 212

Center plate 3

Machine arm 4

Sliding guide platform 1221

Open slot 1222

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1-4, a folding mechanism comprises a limiting shell 1 and a movable shell 2; the limiting shell 1 comprises two limiting plates 110, a locking unit and a pressing component 130 which have the same structure and are oppositely arranged;

the movable shell 2 comprises two oppositely arranged limiting lugs 210, the two limiting lugs 210 are respectively provided with a clamping part 211, the movable shell 2 is arranged between the two oppositely arranged limiting plates 110, and the movable shell 2 is hinged with the limiting plates 110;

the opposite surfaces of the two limiting plates 110 are respectively provided with a sliding chute 111, the types of the sliding chutes 111 comprise semi-closed sliding chutes 111, through grooves and the like, and the locking unit comprises a pre-tightening part 121 and a sliding shaft 122; the pre-tightening part 121 comprises an elastic member 121A and guide posts 121B, the guide posts 121B are arranged in the sliding groove 111, two ends of the sliding shaft 122 are respectively sleeved on the two guide posts 121B, the elastic member 121A is sleeved on the guide posts 121B, and one end of the elastic member 121A is connected with the sliding shaft 122 to generate a pre-tightening force towards the clamping part 211; the pressing member 130 is disposed in the middle of the sliding shaft 122;

the user presses the pressing member 130 to drive the sliding shaft 122 to move in the sliding groove 111 along the sliding groove 111 and away from the clamping portion 211, so that the sliding shaft 122 is separated from the fixed relation with the clamping portion 211, and the movable housing 2 rotates relative to the limiting housing 1 along the hinge shaft, i.e. the folding action is completed. Meanwhile, the elastic member 121A is compressed by a force to deform to generate an elastic force opposite to the pressing pressure direction, so that the pre-tightening member 121 can automatically reset after the user finishes pressing, and the operation is convenient.

The two ends of the sliding shaft 122 are respectively provided with corresponding sliding guide platforms 1221 at positions corresponding to the sliding grooves 111 of the limiting plate 110, and the sliding shaft 122 can be movably arranged between the sliding grooves 111 of the limiting plate 110 through the cooperation of the sliding guide platforms 1221 and the sliding grooves 111;

the two ends of the sliding shaft 122 are respectively provided with a corresponding opening groove 1222, and the two ends of the sliding shaft 122 are sleeved on the guide column 121B by the matching of the opening groove 1222 and the corresponding guide column 121B.

The "locked state" described in this embodiment is obtained when the sliding shaft 122 and the clamping portion 211 are in the clamped state; when the folding mechanism is in the locked state, the horizontal heights of the two sliding grooves 111 near the ends of the clamping portions 211 are the same, the height of the two sliding grooves 111 near the ends of the clamping portions 211 is higher than that of the clamping portions 211, and through the arrangement of the height differences, the elastic component supplies the pretightening force of the sliding shaft 122 towards the connecting portion, and the following examples of three height difference arrangement modes that the horizontal height of the two sliding grooves 111 is near the ends of the clamping portions 211 and the horizontal height of the clamping portions 211 are given as an example, and the arrangement mode of this embodiment is explained:

arrangement mode one "folding mechanism is in when locking state, two spout 111 is apart from the level of the near one end of joint portion 211 is less than the level of joint portion 211, under this condition, because the restriction of spout 111 height, the pretightning force of elastic component 121A can not break the height restriction, leads to the locking effect not firm, when unmanned aerial vehicle high altitude flight, easily takes place the vibration, leads to the flight crooked.

In the second arrangement, "when the folding mechanism is in the locked state, the horizontal height of the end of the two sliding grooves 111 closer to the clamping portion 211 is equal to the horizontal height of the clamping portion 211", in this case, although the supply of the pre-tightening force is relatively firm compared with the first case, the pre-tightening force is limited to a relatively stable state (for example, static placement).

In a third arrangement mode, when the folding mechanism is in the locked state, the horizontal height of the two sliding grooves 111, which is away from the end, close to the clamping portion 211, of the clamping portion 211 is higher than the horizontal height of the clamping portion 211, that is, in the manner adopted in the embodiment, in this case, the elastic component is always supplied with the pretightening force of the sliding shaft 122 towards the connecting portion through the arrangement of the height difference, so that the occurrence of the vibration condition is avoided, and the overall structure is more stable.

There is another special case here: "both ends of the two slide grooves 111 are located at the same distance from the catching portions 211", in this case, either end of the slide grooves 111 may be located at a distance higher than the catching portions 211.

In order to meet the difference of the height difference of the embodiment and simultaneously enable the overall structure of the folding mechanism to be better and compact, when the folding mechanism is in a locking state, the horizontal heights of the two sliding grooves 111 at the ends, close to the clamping portion 211, are the same, the horizontal heights of the two sliding grooves 111 at the ends, close to the clamping portion 211, are 0.5-5mm higher than the horizontal height of the clamping portion 211, and in the numerical range, a value range of 1-2mm is preferably adopted to ensure that the pre-tightening force is appropriate.

In this embodiment, the limiting lug 210 further includes a limiting block 212, and the limiting block 212 is used to limit the sliding shaft 122 in the clamping portion 211, so as to prevent the clamping action from being difficult to maintain when the elastic component is aged and the pretightening force is invalid, and provide an emergency protection structure; specifically, the limiting block 212 is arranged on the inner side wall of the clamping portion 211, and the limiting block 212 is arranged at an opening of the clamping portion 211.

In order to facilitate the two sides of the limit block 212 to be inclined surfaces on the traveling path of the sliding shaft 122, the inclined surfaces are designed to meet the limit while not hindering the movement of the sliding shaft 122 in the sliding groove 111, and to increase the pressing touch feeling during the pressing process.

The utility model provides an unmanned aerial vehicle, includes spider 3, a plurality of horn 4 and foretell folding mechanism, a plurality of horn 4 evenly distributed in spider 3 edge, folding mechanism locates a plurality of horns 4 with between the spider 3. Through increase on unmanned aerial vehicle folding mechanism for folding portion remains stable when flight state.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A folding mechanism is characterized in that: comprises a limiting shell and a movable shell; the limiting shell comprises two limiting plates, a locking unit and a pressing part which are oppositely arranged;

2. The folding mechanism of claim 1, wherein: when the folding mechanism is in a locking state, the horizontal heights of the two sliding grooves, which are far away from the end, close to the clamping portion, of the clamping portion are the same, and the horizontal heights of the two sliding grooves, which are far away from the end, close to the clamping portion, of the clamping portion are 0.5-5mm higher than the horizontal height of the clamping portion.

3. The folding mechanism of claim 2, wherein: when the folding mechanism is in a locking state, the horizontal heights of the two sliding grooves, which are far away from the end, close to the clamping portion, of the clamping portion are the same, and the horizontal heights of the two sliding grooves, which are far away from the end, close to the clamping portion, of the clamping portion are 1-2mm higher than the horizontal height of the clamping portion.

4. The folding mechanism of claim 2, wherein: spacing ear further includes the stopper, the stopper is located on the inside wall of joint portion, the stopper is located the opening part of joint portion.

5. The folding mechanism of claim 4, wherein: the two sides of the limiting block are inclined planes on the traveling path of the sliding shaft.

6. An unmanned aerial vehicle, its characterized in that: comprising a central disc, a plurality of horn arms and a folding mechanism according to any of claims 1-5, said plurality of horn arms being evenly distributed over the edge of said central disc, said folding mechanism being arranged between said plurality of horn arms and said central disc.