WO2020000658A1

WO2020000658A1 - Unmanned aerial vehicle and arm thereof

Info

Publication number: WO2020000658A1
Application number: PCT/CN2018/105014
Authority: WO
Inventors: 徐振华; 熊荣明; 唐尹
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2018-06-26
Filing date: 2018-09-11
Publication date: 2020-01-02
Also published as: CN208377065U; CN110896621A

Abstract

An unmanned aerial vehicle (10) and an arm (100) thereof, the arm (100) of the unmanned aerial vehicle (10) comprising: a body (110); a foot support (120) is provided at a front end of the body (110), and an inner part of the foot support (120) is opened with a cavity; a circuit board (130) is used for welding a wire (20) and is electrically connected to the wire (20), and the circuit board (130) is contained in the cavity of the foot support (120); and a frame (140) is detachably fixed and connected to the circuit board (130) and is used to support the wire (20). The unmanned aerial vehicle (10) and the arm (100) thereof may ensure that the wiring of the wire (20) is consistent by means of the frame (140).

Description

Unmanned aerial vehicle and its arm

Technical field

The invention relates to the field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle and an arm thereof.

Background technique

In order to ensure the flight safety of unmanned aerial vehicles, it is necessary to ensure the transmission of signals through high-performance antennas. The longer the flight distance of the unmanned aerial vehicle, the higher the performance requirements of the antenna.

For the mass production of the antenna performance of unmanned aerial vehicles, the consistency of the cable management of the antenna wire has a great impact on the performance of the antenna. The traditional method is to fix one end of the antenna to the circuit board by welding. However, because the antenna's wire is long, it is easy to bend and deform during the wiring process, and the direction of the antenna is easily changed, which will seriously affect no one Aircraft antenna performance. In addition, during the flight of the unmanned aerial vehicle, the unmanned aerial vehicle will shake greatly, and the antenna is free to fall on the antenna plate, and the shaking is also prone to occur, which may confuse the antenna wiring and reduce the signal quality of the unmanned aerial vehicle.

Summary of the invention

An object of the present invention is to provide an unmanned aerial vehicle and an arm thereof that ensure consistent wire routing.

An arm of an unmanned aerial vehicle, comprising:

main body;

A foot stand, which is provided at the front end of the main body, and a cavity is provided inside the foot stand;

A circuit board for welding a wire and being electrically connected to the wire, the circuit board being housed in a cavity of the tripod; and

The bracket is detachably and fixedly connected to the circuit board and is used for supporting the wire.

An unmanned aerial vehicle includes:

Central body with flight control system; and

A plurality of said arms, said arms being fixedly connected to said central body;

The wire is guided from the circuit board through the bracket, and is electrically connected to the flight control system through the aircraft arm.

In the aforementioned UAV arm, the wire is supported by a bracket. The bracket plays a guiding role in the direction of the wire, ensuring that the wire is routed in the tripod in a consistent manner, and maintaining the consistency of the antenna signal quality of the UAV.

In addition, during the flight of the UAV, the wire is supported by the bracket, so that there is a certain distance between the wire and the circuit board. The wire will not shake with the UAV, avoiding touching the components on the circuit board. Avoid shaking the wire back and forth to damage the solder joints and affect the stable connection of the wire.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of an unmanned aerial vehicle according to this embodiment;

2 is a perspective view of an arm of the unmanned aerial vehicle shown in FIG. 1;

3 is an exploded view of an arm of the unmanned aerial vehicle shown in FIG. 2;

4 is an exploded view of the tripod according to FIG. 3;

5 is a schematic structural diagram of the bracket and the circuit board after assembly according to FIG. 3;

FIG. 6 is a schematic structural view of another angle after assembly of the bracket and the circuit board shown in FIG. 5.

Reference signs are as follows: 10, unmanned aerial vehicle; 11, central body; 12, power unit; 100, arm; 110, main body; 111, front end; 112, rear end; 120, tripod; 121, card slot; 123, convex ribs; 130, circuit boards; 140, brackets; 141, fixed parts; 1411, bent parts; 142, support parts; 1421, buckles; 1422, pressure buckles; 1423, back bend parts; 1425, limit convex edge; 1426, raised; 20, wire.

detailed description

Although the present invention can be easily embodied in different forms of embodiments, only some of the specific embodiments are shown in the drawings and will be described in detail in this specification, and it can be understood that this specification should be regarded as the present invention. The exemplary description of the principles of the invention is not intended to limit the invention to what is described herein.

Thus, a feature pointed out in this specification will be used to explain one of the features of an embodiment of the present invention, rather than implying that every embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although certain features can be combined to show possible system designs, these features can also be used in other combinations not explicitly stated. Thus, unless stated otherwise, the combinations described are not intended to be limiting.

In the embodiment shown in the drawings, the directions (such as up, down, left, right, front, and rear) are used to explain that the structure and movement of the various elements of the present invention are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the position of these elements changes, the indication of these directions changes accordingly.

The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings of the present specification.

Please refer to FIG. 1, the present invention provides an unmanned aerial vehicle and an aircraft arm thereof.

The unmanned aerial vehicle 10 of the present embodiment includes a central body 11, a plurality of arms 100, and a plurality of power units 12.

The center body 11 is provided with a flight control system. The plurality of arms 100 are respectively disposed around the central body 11. The plurality of power devices 12 are respectively disposed on the plurality of arms 100. The arm 100 forms a threading channel for the wire 20 to pass through, and the wire 20 can pass from the central body 11 to the threading channel of the arm and is electrically connected to the power device 12. Therefore, the wire 20 is guided from the flight control system in the center body 11 to the power device 12 through the arm 100, and electrically connects the flight control system and the power device 12.

Please refer to FIG. 2 and FIG. 3. The UAV arm 100 includes a main body 110, a stand 120, a circuit board 130 and a bracket 140.

The main body 110 has a tubular shape. The main body 110 is divided along its axial direction into a front end 111 for carrying the power unit 12 and a rear end 112 for connecting the central body 11. The wire 20 can be drawn out from the center body 11, penetrate through the rear end of the main body 110, and reach the front end of the main body 110 to be electrically connected to the power device 12.

It can be understood that the wire 20 may be a lead of a motor of the power device 12, or may be an antenna. Specifically, in this embodiment, the wire 20 is described using an antenna as an example. The antenna is guided from the circuit board 130 through the bracket 140 and is electrically connected to the flight control system through the arm 100.

The stand 120 is provided at the front end of the main body 110. A cavity is defined in the foot stand 120. The cavity inside the stand 120 can be used to receive the circuit board 130, the bracket 140, and the wire 20.

The circuit board 130 is used for welding the wire 20 and is electrically connected to the wire 20. The circuit board 130 is received in the cavity of the stand 120. Please refer to FIG. 4. Specifically, in this embodiment, the circuit board 130 is engaged with the inner side wall of the foot stand 120. A card slot is defined in an inner side wall of the foot stand 120. The shape of the slot is adapted to the shape and thickness of the circuit board 130 so that the circuit board 130 can be engaged in the slot.

Specifically, in this embodiment, two opposite inner side walls of the tripod 120 are provided with a clamping slot 121, and two sides of the circuit board 130 are respectively engaged in the clamping slot 121. In addition, a convex rib 123 for resisting the circuit board 130 is also provided on the inner side wall of the tripod 120. The slot 121 limits the circuit board 130 from both sides of the circuit board 130, and the protruding rib 123 limits the circuit board 130 from above the circuit board 130, so that the circuit board 130 can be stably fixed in the stand 120.

It can be understood that the circuit board 130 and the tripod 120 may further be provided with a buckle or a slot that cooperates with each other, and the circuit board 130 and the tripod 120 may be detachably connected.

The bracket 140 is detachably and fixedly connected to the circuit board 130. Please refer to FIGS. 5 and 6, the bracket 140 can play a role of supporting the wire 20. The bracket 140 supports the wire 20 and keeps the wire 20 and the circuit board 130 at a certain distance to prevent the wire 20 from being attached to the circuit board 130 and causing the circuit board 130 to shake. During the flight of the UAV 10, the bracket 140 also restricts the wiring of the wire, which can prevent the wire 20 from shaking back and forth, thereby avoiding breakage or fracture of the welding point connecting the wire 20 and the circuit board 130, and ensuring the wire 20 It is firmly connected to the circuit board 130. In addition, the bracket 140 guides the direction of the wire 20 to ensure that the wire 20 is routed in the tripod 120 in a consistent manner and maintains the consistency of the antenna signal quality of the UAV. When the wire 20 is an antenna, the antenna remains fixed to the bracket 140, which can ensure the quality of the antenna receiving and transmitting signals.

Specifically, in this embodiment, the bracket 140 includes a fixing portion 141 and a supporting portion 142. The supporting portion 142 is protruded from one end of the fixing portion 141. The fixing portion 141 is bonded to the circuit board 130.

The fixing portion 141 has a plate-like structure. The fixing portion 141 is detachably connected to the circuit board 130. Specifically, in this embodiment, the fixing portion 141 and the circuit board 130 are connected by thermal fusion, bonding, or the like.

A bent portion 1411 is provided at one end of the fixed portion 141. The bent portion 1411 is in contact with the end surface of the circuit board 130, so that the fixing portion 141 can be more stably connected to the circuit board 130. It can be understood that the bent portion 1411 may also be a buckle structure, and the buckle is fixedly engaged with the edge of the circuit board 130.

The supporting portion 142 is used for supporting the wire 20 and plays a role of restricting the direction of the wire. Specifically, the supporting portion 142 protrudes obliquely from one end of the fixing portion 141. The support portion 142 supports the antenna on the circuit board 130 obliquely. Therefore, even during the mass production of drones, the direction and position of the antennas can be kept consistent, and the signal quality of the drones is consistent, ensuring the yield of drone production.

The support portion 142 is provided with a buckle 1421 for the clamp wire 20. The buckle 1421 includes a plurality of buckles. The plurality of buckles 1421 are arranged oppositely and / or staggeredly. A plurality of buckles 1421 are arranged along the extending direction of the wire 20 to fix the wire 20 with a longer length and ensure that the wire 20 is stably fixed on the supporting portion 142.

The buckle 1421 includes a buckle 1422. The buckle 1422 is provided with a bent portion 1423, and the bent portion 1423 is used for holding the hoop wire 20. The bent portion 1423 of the buckle 1422 presses the wire 20 from above the wire 20 to prevent the wire 20 from detaching from between the two opposite buckles 1421 and affects the fixed support of the wire 20.

The bracket 140 further includes a guide portion 1424. The guide portion 1424 is disposed on the support portion 142 and is disposed along an extending direction of the support portion 142. Specifically, the guide portion 1424 is provided on a side of the support portion 142 near the fixed portion 141. The guide portion 1424 is provided along the extending direction of the antenna. The guide portion 1424 guides the direction of the antenna on the support portion 142, and the antenna is provided on the support portion 142 along the guide portion 1424 from the circuit board 130 upward.

Specifically, in this embodiment, the guide portion 1424 is a guide protrusion provided on the support portion 142 side. The guiding ledge can be in contact with the wire so as to play a guiding role. It can be understood that the guide portion 1424 may also be a structure such as a catheter or a guide groove.

A limiting protrusion 1425 is provided on one side of the supporting portion 142. The buckle 1421 is provided on the other side of the support portion 142. The limiting protrusion extends along the extending direction of the support portion 142 along 1425. The limiting convex edge 1425 is disposed relative to the guiding convex edge. Then, the limiting convex edge 1425 and the guide convex edge are opposite to each other to form a wire groove for clamping the antenna. And the limiting protrusion 1425 continues to the opposite side of the buckle 1421. Therefore, the limiting protrusion 1425 and the buckle 1421 limit the wire 20 on both sides of the wire 20 respectively.

Specifically, in this embodiment, the length of the limiting protrusion 1425 is the same as the length of the supporting portion 142, that is, the limiting protrusion 1425 penetrates the entire surface of the supporting portion 142. In addition, a protrusion 1426 is provided on an inner side wall of the limiting protrusion 1425, and the protrusion 1426 further restricts the wire 20.

It can be understood that the limiting convex edge 1425 can be smaller than the length of the supporting portion 142. Alternatively, the limiting convex edge 1425 is composed of a plurality of intermittently provided convex edges.

In addition, the buckle 1421 can be omitted, and the wire 20 can be fixed on the support portion 142 by the guide protrusion and the limit protrusion 1425 respectively located on the opposite sides of the support portion 142. Alternatively, a protrusion 1426 is provided on the inner sidewall of the guiding protrusion and the limiting protrusion 1425 to limit the wire 20.

In other embodiments, the support portion 142 may further be provided with a band, and the wire 20 may also be detachably fixed to the support portion 142 through the band.

The arm of the UAV is used to fix the wire 20 through the buckle 1421, the guide portion 1424 and the limiting protrusion 1425 on the bracket 140. During the operation, the wire 20 can be limited to the supporting portion 142 by pressing the wire 20 slightly. The operation is simple and convenient, and the efficiency of fixing and fixing the wire 20 is improved.

The arms of the above-mentioned unmanned aerial vehicle can centrally and orderly install the wire rods 20, and the positions of the brackets 140 can be correspondingly arranged according to the wiring design of the circuit board 130, which is beneficial to the rational use of space of the circuit board 130 and the reasonable wiring of the wire rods 20. The use of the bracket 140 on an unmanned aerial vehicle can prevent the wire from being bent and deformed during the routing process, and will not affect the antenna performance of the unmanned aerial vehicle. Even if the drone will shake greatly during flight or transportation, the wires will not shake freely, causing chaos in the wiring, and not touching the circuit board, which will ensure the signal quality of the drone and further improve The flight safety and flight distance of the UAV are improved.

Although the invention has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is illustrative and exemplary, and not restrictive. Since the present invention can be embodied in various forms without departing from the spirit or essence of the invention, it should be understood that the above-mentioned embodiments are not limited to any of the foregoing details, but should be broadly interpreted within the spirit and scope defined by the appended claims. , Therefore, all changes and modifications falling within the scope of the claims or their equivalents shall be covered by the appended claims.

Claims

An aircraft arm of an unmanned aerial vehicle is characterized in that it includes:

main body;

A foot stand, which is provided at the front end of the main body, and a cavity is provided inside the foot stand;

A circuit board for welding a wire and being electrically connected to the wire, the circuit board being housed in a cavity of the tripod; and

The bracket is detachably and fixedly connected to the circuit board and is used for supporting the wire.
The arm of an unmanned aerial vehicle according to claim 1, wherein the circuit board is engaged with the inner side wall of the tripod.
The arm of an unmanned aerial vehicle according to claim 2, wherein a card slot is provided on an inner side wall of the tripod, and the circuit board is engaged with the card slot.
The arm of an unmanned aerial vehicle according to claim 2, wherein two opposite inner side walls of the tripod are provided with card slots, and two sides of the circuit board are respectively engaged in the card slots. .
The arm of an unmanned aerial vehicle according to claim 4, wherein an inner side wall of the tripod is further provided with a rib for resisting the circuit board.
The arm of an unmanned aerial vehicle according to claim 1, wherein the bracket comprises a fixing portion and a supporting portion, the supporting portion is protruded from one end of the fixing portion, and the fixing portion and the circuit The board is bonded, and the support portion is used to support the wire and plays a role of restricting the direction of the wire.
The arm of an unmanned aerial vehicle according to claim 6, wherein the support portion is provided with a buckle for a clamp wire.
The arm of an unmanned aerial vehicle according to claim 7, wherein the buckle comprises a plurality of buckles, and the plurality of buckles are arranged oppositely and / or staggeredly.
The arm of an unmanned aerial vehicle according to claim 7, wherein the buckle includes a buckle, the buckle is provided with a bent portion, and the bent portion is used to hoop the wire.
The arm of an unmanned aerial vehicle according to claim 6, wherein the bracket further comprises a guide portion, the guide portion is disposed on the support portion, and is disposed along an extending direction of the support portion.
The arm of an unmanned aerial vehicle according to claim 7, characterized in that, one side of the supporting portion is provided with a limiting convex edge, and the limiting convex edge extends along an extending direction of the supporting portion, and the card The buckle is set on the other side of the support portion, and the limiting convex edge and the buckle respectively limit the two sides of the wire.
The arm of an unmanned aerial vehicle according to claim 6, wherein the fixing portion is detachably connected to the circuit board.
The arm of an unmanned aerial vehicle according to claim 6, wherein one end of the fixed portion is provided with a bent portion, and the bent portion is in contact with an end surface of the circuit board.
An unmanned aerial vehicle is characterized by comprising:

Central body with flight control system; and

A plurality of machine arms, the machine arm including a main body, a tripod provided at a front end of the main body, a cavity is provided inside the tripod for welding a circuit board of a wire, and the circuit board and the wire are Electrical connection, the circuit board is accommodated in the cavity of the tripod, and a bracket detachably fixedly connected to the circuit board, the bracket is used to support the wire, the machine arm and the center Body connection

The wire is guided from the circuit board through the bracket, and is electrically connected to the flight control system through the aircraft arm.
The unmanned aerial vehicle according to claim 14, wherein the circuit board is engaged with the inner side wall of the tripod.
The unmanned aerial vehicle according to claim 15, wherein a card slot is provided on an inner side wall of the tripod, and the circuit board is engaged with the card slot.
The unmanned aerial vehicle according to claim 15, wherein two opposite inner side walls of the tripod are provided with card slots, and two sides of the circuit board are respectively engaged in the card slots.
The unmanned aerial vehicle according to claim 17, wherein an inner side wall of the tripod is further provided with a rib for resisting the circuit board.
The unmanned aerial vehicle according to claim 14, wherein the bracket comprises a fixing portion and a supporting portion, the supporting portion is protruded at one end of the fixing portion, and the fixing portion is attached to the circuit board The support portion is used for supporting the wire and plays a role of restricting the direction of the wire.
The unmanned aerial vehicle according to claim 19, wherein the support portion is provided with a buckle for a clamp wire.
The unmanned aerial vehicle according to claim 20, wherein the buckle comprises a plurality of buckles, and the plurality of buckles are arranged oppositely or / and staggeredly.
The unmanned aerial vehicle according to claim 20, wherein the buckle includes a buckle, and the buckle is provided with a bent portion, and the bent portion is used to hoop the wire.
The unmanned aerial vehicle according to claim 19, wherein the bracket further comprises a guide portion, the guide portion is disposed on the support portion, and is disposed along an extending direction of the support portion.
The unmanned aerial vehicle according to claim 20, wherein a limiting protrusion is provided on one side of the supporting portion, the limiting protrusion extends along an extending direction of the supporting portion, and the buckle is provided on On the other side of the support portion, the limiting convex edge and the buckle respectively limit the two sides of the wire.
The unmanned aerial vehicle according to claim 19, wherein the fixing portion is detachably connected to the circuit board.
The unmanned aerial vehicle according to claim 19, wherein one end of the fixed portion is provided with a bent portion, and the bent portion is in contact with an end surface of the circuit board.