WO2017173732A1

WO2017173732A1 - Unmanned aerial vehicle (uav) with multi-arm synchronous folding mechanism

Info

Publication number: WO2017173732A1
Application number: PCT/CN2016/086310
Authority: WO
Inventors: 高鹏; 王月福; 钟海青
Original assignee: 高鹏
Priority date: 2016-04-08
Filing date: 2016-06-17
Publication date: 2017-10-12
Also published as: CN105857571B; CN105857571A

Abstract

An unmanned aerial vehicle (UAV) with a multi-arm synchronous folding mechanism, comprising: a base (1) having a flat plate shape and being provided with a plurality of rotating shafts (12) which extend parallel to the base (1); a plurality of arms (2), which are connected to the rotating shafts (12) in such a manner as to be rotatable about the rotating shafts (12) respectively and capable of being in an unfolded state parallel to the base (1) and in a folded state perpendicular to the base (1); a clamping assembly (31, 32), which are used for keeping multiple arms in an unfolded state; and a folding assembly (5, 41, 42), which is used for synchronously relieving the clamping state of the clamping assembly, so that multiple arms can be converted from the unfolding state to the folding state, wherein the clamping assembly and the folding assembly form a multi-arm synchronous folding mechanism. The UAV with the multi-arm synchronous folding mechanism is easy to change the size of the UAV, simple to operate, and convenient to use in the process of folding the arms.

Description

UAV with multi-arm synchronous folding mechanism

cross reference

The present application claims priority to Chinese Patent Application No. 201610218998.1, filed on Apr.

Technical field

The present invention relates to the field of drones; more specifically, the present invention relates to a drone (especially to a small and medium-sized drone) having a multi-arm synchronous folding mechanism.

Background technique

At present, the arms of small and medium-sized drones usually have both fixed and foldable configurations. The size of the drone using the fixed arm is not easily changed, which affects the portability of the drone. A drone using a foldable arm typically employs a single arm folding mechanism. When such a single arm folding mechanism is used, it is necessary to fold the respective arms one by one. Thus, in the case where there are many arms, there is a drawback that the operation is cumbersome and inconvenient to use.

Summary of the invention

The present invention has been made based on the above-described drawbacks of the prior art, and provides a drone capable of realizing simultaneous folding of multiple arms. In order to achieve the above object, the present invention adopts the following technical solutions.

The present invention provides a drone having a multi-arm synchronous folding mechanism, the drone including: a base having a flat plate shape and having the base mounted on the base a plurality of rotating shafts extending in parallel; a plurality of arms connected to the rotating shaft in a manner rotatable about the rotating shaft, respectively, and the plurality of arms can be in a position Pedestal flat a deployed state of the row and a folded state perpendicular to the base; a snap-fit assembly for maintaining the plurality of arms in an unfolded state; and a folding assembly for synchronizing the release The latching state of the snap-fit assembly causes the plurality of arms to be synchronized from the unfolded state to the folded state, wherein the snap-fit assembly and the fold assembly constitute the multi-arm synchronous folding mechanism.

Preferably, the folding assembly comprises: a linkage, the linkage generates an interlocking action for synchronously releasing the snap-on assembly; and a transmission assembly, the transmission assembly synchronously transmits the linkage motion to the plurality A snap-fit assembly for each of the arms.

More preferably, the linkage is disposed on the base in a manner movable away from and proximate to the base in a direction perpendicular to the base.

Further preferably, the linkage is disposed at a geometric center of the base.

More preferably, the transmission assembly includes: a plurality of inclined guide columns, each of which is disposed on the linkage and movable along with the linkage; and a plurality of sliders, the plurality The sliders are respectively driven by the oblique guide columns to reciprocate in a direction away from and close to the linkage, and the plurality of sliders are capable of converting the linkage action of the linkage into the release of the snap assembly The release of the card state.

Further, preferably, the plurality of oblique guide columns extend toward the outer side from the linkage to the outer side, and the plurality of sliders are provided with an extending direction and an extending direction of the inclined guiding column Consistent oblique guide groove.

Further, preferably, the snap-fit assembly includes: a plurality of crossbars respectively disposed on the slider and movable along with the slider; and a plurality of snap portions, the plurality of The latching portions are respectively disposed at a portion of each of the plurality of arms that is rotatably coupled to the rotating shaft, and the latching portion is configured to be engaged with the crossbar such that the plurality of latching portions The arm remains unfolded.

Further, more preferably, the snap-fit assembly further includes a plurality of elastic members respectively coupled to the rotating shaft and the cross bar such that the plurality of arms are maintained when in the deployed state The state of engagement of the crossbar and the snap portion is described.

Further, more preferably, a plurality of pairs of fixing brackets extending from the base in a direction perpendicular to the base are provided on the base, and the plurality of pairs of fixing brackets are along the base The circumference is evenly distributed.

Further, more preferably, each of the plurality of pairs of fixing brackets is provided with the rotating shaft, and each of the pair of fixing brackets is further provided with a sliding rail, the horizontal The rod is reciprocally movable along the sliding track in a direction away from and in proximity to the linkage.

By adopting the above-described technical solution, the present invention provides a drone capable of simultaneous folding of multiple arms, which makes it easy to change the size of the drone and is simple to operate and easy to use in the process of folding the arm.

Further features and aspects of the present invention will become apparent from the Detailed Description of the Drawing.

DRAWINGS

The accompanying drawings, which are incorporated in FIG

1 is a schematic view showing a drone according to the present invention in which a multi-arm is in an unfolded state.

2 is a schematic view showing a drone according to the present invention in which a plurality of arms are in a folded state.

3 is a top plan view showing the drone according to the present invention in which the multiple arms are in an unfolded state.

Fig. 4 is an enlarged schematic view showing a region A in Fig. 1.

Fig. 5 is an enlarged schematic view showing a region B in Fig. 2.

Description of the reference numerals

1 base 11 fixing bracket 12 rotating shaft 13 sliding rail 2 arm

21 free end 31 snap connection 32 crossbar 33 spring 41 slider

42 inclined guide column 5 button

detailed description

Specific embodiments of the present invention are described below in conjunction with the accompanying drawings. In the present invention, "inner" and "outer" refer to the side of each component that is close to the geometric center of the substrate on its own and the side that is away from the geometric center of the substrate, respectively.

(Summary structure of the drone)

As shown in FIGS. 1 to 3, in the present embodiment, the drone according to the present invention includes a susceptor 1 for mounting other components. In the present embodiment, the susceptor 1 has a substantially flat plate structure and has an octagonal shape that is bilaterally symmetrical (as shown in FIG. 3).

The base 1 is provided with four pairs of fixing brackets 11 extending from the base 1 and extending upright in a direction perpendicular to the base 1. The four pairs of fixing brackets 11 are evenly distributed along the circumference of the base 1. Each pair of fixing brackets 11 is provided with a rotating shaft 12 which extends in parallel with the base 1.

In the present embodiment, the drone according to the present invention further includes four arms 2 each having the same shape and being substantially rod-shaped. One end of each arm 2 is a free end 21 for mounting a component such as a propeller; and each arm 2 is coupled to the rotating shaft 12 so that the other end can be rotated about the rotating shaft 12, respectively. By rotating the four arms 2 about the rotating shaft 12, the arm 2 can be in an unfolded state parallel to the base 1 (as shown in FIGS. 1 and 3) and a folded state perpendicular to the base 1 (FIG. 2). Shown).

In addition, in the present embodiment, the unmanned aerial vehicle according to the present invention further includes a snap-fit assembly and a folding assembly, and the snap-fit assembly and the folding assembly constitute a multi-arm synchronous folding mechanism that realizes simultaneous folding of the four arms 2.

When the snap-fit assembly is in the engaged state, the snap-fit assembly maintains the plurality of arms 2 in an unfolded state. The folding component is used for synchronously releasing the snap-in state of the snap-fit component, so that the plurality of arms 2 are in the same state from the unfolded state The step is shifted to the folded state, and finally the plurality of arms 2 are in a folded state.

(folding component)

As shown in Figures 1, 2 and 4, the folding assembly includes a button 5 and a drive assembly.

The button 5 is disposed at the geometric center of the susceptor 1 and is disposed on the pedestal 1, ie, the button 5, in such a manner as to be movable away from and close to the susceptor 1 in a direction perpendicular to the susceptor 1 to enable along the FIGS. 1 and 2 The vertical movement in the vertical direction is set to the base 1. Thus, the button 5 functions as a linkage that generates a linkage action to drive the linkage of the transmission assembly for synchronizing the snap-on assembly to the engaged state.

The transmission assembly includes a slanted guide post 42 and a slider 41. The inclined guide columns 42 are respectively disposed below the button 5 and can move up and down along the vertical direction shown in FIGS. 1 and 2 along with the button 5, and the oblique guide column 42 is closer to the base 1 from the button 5 The extension tends to the outside. The slider 41 is provided with an oblique guide groove (not shown) through which the oblique guide post 42 is inserted, and the oblique guide groove extends in a direction that coincides with the extending direction of the inclined guide post 42. The inclined guide post 42 is inserted into the oblique guide groove, and the movement of the inclined guide post 42 causes the slider 41 to be driven by the inclined guide post 42 and reciprocally movable away from and in the direction of the link.

Thus, when the button 5 drives the oblique guide post 42 to move up and down along the vertical direction in FIGS. 1 and 2, the slider 41 can convert the interlocking action of the button 5 into the release of the snap-on state for releasing the snap-fit assembly. Action (detailed below).

In the present embodiment, the number of the oblique guide post 42 and the slider 41 is four, and the oblique guide post 42, the slider 41 and the arm 2 are in one-to-one correspondence. In the present embodiment, the transmission assembly synchronously transmits the interlocking motion to the latching assembly of each of the arms 2 to achieve the purpose of synchronous folding of the four arms 2.

(clamping component)

As shown in FIGS. 1, 2 and 5, the snap-fit assembly includes a snap portion 31 and a crossbar 32. The catching portion 31 is provided at a portion of each of the arms 2 that is rotatably coupled to the base 1. When the arm 2 is in an unfolded state substantially parallel to the base 1, the engagement of the engaging portion 31 with the crossbar 32 ensures that the arm 2 remains in the deployed state. Both the crossbar 32 and the slider 41 are substantially rod-shaped, and the extending direction of the crossbar 32 and the extending direction of the slider 41 are substantially perpendicular to each other. The cross bar 32 is disposed at an end of the slider 41 away from the inclined guide post 42 and can be transported along with the slider 41 move. Each pair of fixing brackets 11 is also provided with a sliding rail 13 so that the rail 32 can reciprocate along the sliding rail 13 in a direction away from and in proximity to the button 5.

Thus, the state of the engagement between the crossbar 32 and the engaging portion 31 and the state in which the snapping is released are achieved by the movement of the crossbar 32.

In addition, the snap assembly further includes a spring 33, and the spring 33 is a tension spring. Both ends of the spring 33 are connected to the rotating shaft 12 and the crossbar 32, respectively, so that the latching state of the crossbar 32 and the engaging portion 31 is maintained when the plurality of arms 2 are in the unfolded state. In the present embodiment, one end of the spring 33 is directly connected to the rotating shaft 12, and the other end of the spring 33 is attached to the crossbar 32 by a mounting member (not shown) such as a screw. In other embodiments, the other end of the spring 33 can also be mounted to the slider 41.

The specific structure of the unmanned aerial vehicle having the multi-arm folding mechanism of the present invention has been described in detail above with reference to the accompanying drawings, and the folding process and the unfolding process of the arm 2 of the unmanned aerial vehicle will be specifically described below with reference to the drawings.

(folding process and unfolding process of the arm 2 of the drone)

When the four arms 2 of the drone are in the unfolded state, the button 5 is located at the uppermost position that can be moved in the vertical direction in FIGS. 1 and 2 due to the pulling force of the spring 33 without external force. The position (the position in Fig. 1, that is, the top dead center position), the cross bar 32 is engaged with the engaging portion 31 to ensure that the arm 2 of the drone remains in the unfolded state.

In order to synchronize the plurality of arms 2 to the folded state, the button 5 is moved downward along the vertical direction in FIGS. 1 and 2, and the button 5 synchronously drives the four oblique guide columns 42 to move downward; The characteristic structural features of the guide post 42 cooperate with the inclined guide groove of the slider 41 such that the downward movement of the four inclined guide columns 42 is converted into the inward movement of the slider 41, and the crossbar 32 follows the slider 41 to move inward; After the crossbar 32 has moved by a predetermined distance, the state of engagement between the crossbar 32 and the catching portion 31 is released. Thus, the plurality of arms 2 are rotatable about the rotational axis 12 and finally achieve a folded state.

When the four arms 2 of the drone are in the folded state, the button 5 is located at the top dead center position due to the pulling force of the spring 33 without the external force, and the cross bar 32 and the engaging portion 31 are unfastened. Shape state.

In order to realize the transition of the plurality of arms 2 to the unfolded state, the plurality of arms 2 can be respectively rotated about the rotating shaft 12 to a position parallel to the base 1. After each arm 2 is rotated by a predetermined angle, each arm The latching portion 31 of the 2 is engaged with the crossbar 32, so that the arms 2 are in an unfolded state.

(other)

The specific embodiments of the present invention have been described in detail above, but it should also be noted that:

1. Although the number of the arms 2 is described as four in the above embodiment, the present invention is not limited thereto, and two, three or more than four arms 2 may be provided depending on the actual situation.

2. Although the specific structure of the snap-fit assembly has been described in the above embodiment, the present invention is not limited thereto, and a snap-fit assembly having another structure may be employed to achieve the stuck state.

3. The button 5, the inclined guide post 42, and the slider 41 and the crossbar 32 may be formed integrally.

4. Preferably, both ends of the spring 33 are always kept in connection with the rotating shaft 12 and the crossbar 32 (slider 41) to ensure that a tensile force is always applied to the crossbar 32 (slider 41).

5. The shape of the susceptor is not limited to the left-right symmetrical octagonal shape described above, and may be other various shapes such as a circle, a square, or the like.

The protection scope of the present invention is not limited to the specific embodiments described in the above specific embodiments, but it is within the scope of the present invention as long as the combination of the technical features of the claims of the present invention is satisfied.

Practicality

The present invention provides a drone capable of simultaneous folding of multiple arms, which makes it easy to change the size of the drone and is simple to operate and easy to use in the process of folding the arm.

Claims

A drone having a multi-arm synchronous folding mechanism, characterized in that the drone comprises:

a base having a flat plate shape and having a plurality of rotating shafts extending parallel to the base on the base;

a plurality of arms connected to the rotating shaft so as to be rotatable about the rotating shaft, respectively, and the plurality of arms can be in an unfolded state parallel to the base and a vertically folded state of the base;

a snap-on assembly for maintaining the plurality of arms in an unfolded state;

a folding assembly for synchronously releasing the snap-in state of the snap-fit assembly, such that the plurality of arms are synchronized from the unfolded state to the folded state,

Wherein the snap assembly and the folding assembly constitute the multi-arm synchronous folding mechanism.
A drone having a multi-arm synchronous folding mechanism according to claim 1, wherein

The folding assembly includes:

a linkage, the linkage generating an interlocking action for synchronously releasing the snap-on assembly; and

A transmission assembly that synchronously transmits the linkage motion to a snap-fit assembly of each of the plurality of arms.
A drone having a multi-arm synchronous folding mechanism according to claim 2, wherein said linkage is disposed in such a manner as to be movable away from and close to said base in a direction perpendicular to said base On the base.
The drone having a multi-arm synchronous folding mechanism according to claim 3, wherein the linkage is disposed at a geometric center of the base.
The drone having a multi-arm synchronous folding mechanism according to any one of claims 2 to 4, wherein the transmission assembly comprises:

a plurality of inclined guide columns, each of which is disposed on the linkage and movable along with the linkage; and

a plurality of sliders respectively driven by the oblique guide columns to reciprocately move away from and in proximity to the linkage, the plurality of sliders capable of converting the linkage motion of the linkage The canceling action for releasing the stuck state of the snap-fit assembly.
The unmanned aerial vehicle having a multi-arm synchronous folding mechanism according to claim 5, wherein said plurality of oblique guide columns extend toward said base toward the outer side from said linkage member, and

The plurality of sliders are provided with oblique guiding grooves extending in a direction that coincides with an extending direction of the inclined guiding columns.
The unmanned aerial vehicle having a multi-arm synchronous folding mechanism according to claim 5, wherein the snap-fit assembly comprises:

a plurality of crossbars respectively disposed on the slider and capable of following the slider together; and

a plurality of engaging portions, wherein the plurality of engaging portions are respectively disposed at a portion of each of the plurality of arms that is rotatably coupled to the rotating shaft, and the engaging portion is configured to be The crossbar is snapped such that the plurality of arms remain in an unfolded state.
A drone having a multi-arm synchronous folding mechanism according to claim 7, wherein said snap-fit assembly further comprises a plurality of elastic members, said elastic members being respectively coupled to said rotating shaft and said horizontal The lever maintains a state of engagement of the crossbar and the snap portion when the plurality of arms are in an unfolded state.
A drone having a multi-arm synchronous folding mechanism according to claim 7, wherein said base is provided with a plurality of extending from said base in a direction perpendicular to said base To the fixed bracket, and

The plurality of pairs of fixed brackets are evenly distributed along the circumference of the base.
The unmanned aerial vehicle having a multi-arm synchronous folding mechanism according to claim 9, wherein each of the plurality of pairs of fixing brackets is provided with the rotating shaft, and

Each of the plurality of pairs of fixed brackets is further provided with a slide rail that is reciprocally movable along the slide rail in a direction away from and in proximity to the linkage.