WO2018113481A1

WO2018113481A1 - Detachable arm assembly and aircraft

Info

Publication number: WO2018113481A1
Application number: PCT/CN2017/113147
Authority: WO
Inventors: 吕航; 李镇良; 苏文兵
Original assignee: 深圳市道通智能航空技术有限公司
Priority date: 2016-12-21
Filing date: 2017-11-27
Publication date: 2018-06-28
Also published as: CN206466158U

Abstract

Provided in the present utility model are a detachable arm assembly and an aircraft. The detachable arm assembly comprises a first arm section and a second arm section. A first line core is fixedly provided inside the first arm section. Both ends of the first line core are respectively provided with a line pin and a first line. The line pin is electrically connected to the first line. A second line core is fixedly provided inside the second arm section. Both ends of the second line core are respectively provided with a line jack and a second line. A conductive channel is provided in the line jack. The conductive channel is electrically connected to the second line. When the first arm section is connected to the second arm section, the line pin is inserted into the line jack, such that the first line is connected to the second line, thereby achieving the connection between the electrical lines of the arm and a main part, i.e. achieving the quick detachment of the arm, and synchronously achieving the quick detachment of the electrical structures in the aircraft arm. The invention has a simple structure, and improves the efficiency of the detachment of the arm.

Description

Removable arm assembly and aircraft

Technical field

The utility model relates to the field of aircrafts, in particular to a detachable arm assembly and an aircraft.

Background technique

Multi-axis aircraft, also known as rotorcraft, is equipped with multiple propellers, which are controlled by multiple propellers to control flight. It is widely used in aerial photography, detection, search and rescue, resource exploration, agriculture, etc., with small size and weight. Light, low cost, flexible operation and high security. The multi-axis aircraft has a plurality of arms, and the motor that powers the propeller on the multi-axis aircraft is generally mounted on the arm through the motor base, and the motor control board of the control motor is installed in the fuselage of the aircraft.

In order to be portable, the arms of today's multi-axis aircraft are often required to be foldable or detachable for the purpose of reducing the volume. When the arm is disassembled in a detachable manner, it is generally necessary to disassemble the arm and the main part of the aircraft before disassembling the arm, and then disconnect the electrical circuit between the arm and the main body. When installing the arm, you need to connect the electrical circuit of the arm to the main part first, and then connect the arm to the main part. The above operation is cumbersome and time consuming, resulting in inefficient removal of the arm. Therefore, how to realize the quick disassembly and assembly of the electrical structure in the aircraft arm to realize the quick disassembly and assembly of the arm has become an urgent problem to be solved.

Utility model content

Therefore, the technical problem to be solved by the present invention is to overcome the technical defects of the complicated structure and complicated operation of the arm of the multi-axis aircraft of the prior art in the process of disassembly and assembly.

To this end, the present invention provides a detachable arm assembly including a first arm segment and a second arm segment detachably coupled to the first arm segment; the first arm segment is internally provided with a first a line core, the two ends of the first line core are respectively provided with a line pin and a first line, and the line pin and the first line A line is electrically connected; a second line core is disposed inside the second arm section, and two ends of the second line core are respectively provided with a line jack and a second line, and the line jack is provided with a conductive path, and the conductive path The second line is electrically connected; when the first arm section is connected to the second arm section, the line pin is inserted into the line jack, so that the first line is electrically connected to the second line.

Preferably, the first arm segment is provided with a locking portion, and the second arm segment is provided with a fitting portion adapted to the locking portion; the locking portion cooperates with the engaging portion to make the first arm segment and The second arm section is detachably connected.

Preferably, the locking portion is a fastening screw sleeve that is sleeved on the outer surface of the first arm segment, the inner surface of the fastening screw has an internal thread; the engaging portion is disposed on the outer surface of the second arm portion. External thread; when the first arm section is inserted into the second arm section, the first arm section is connected to the second arm section by the internal thread and the external thread being engaged with each other.

Preferably, the fastening screw has an annular base ring, and an end surface of the base ring facing away from the second arm section extends radially inward to form an annular pressure ring; the outer peripheral surface of the first arm section is outward An annular limiting boss is convexly disposed; the internal thread and the external thread are engaged with each other, and the pressing ring abuts the limiting boss.

Preferably, the outer diameter of the limiting boss is larger than the inner diameter of the pressure ring, and the outer diameter of the limiting boss is smaller than the inner diameter of the base ring.

Preferably, the first arm segment is provided with a first positioning member, the first positioning member extends along the axial direction of the first arm segment; the second arm segment is provided with the second positioning member, and the second positioning member is along the second machine An axial extension of the arm segment; the first arm segment and the second arm segment are coupled to each other by the first positioning member and the second positioning member.

Preferably, the first positioning member is disposed on the outer wall of the first arm segment, the first positioning member is a positioning protrusion; the second positioning member is disposed on the inner wall of the second arm portion, and the second positioning member is positioned and convex. The block is adapted to the positioning groove.

Preferably, the first positioning member is disposed on the outer wall of the first arm segment, the first positioning member is a positioning groove; the second positioning member is disposed on the inner wall of the second arm segment, and the second positioning member is configured to be concave. Slot-aligned positioning bumps.

Preferably, the outer surface of the first circuit core body is provided with a first limit key, and the first arm section is internally provided with a first limit slot matched with the first limit key, and the first limit key and the first limit a limiting slot cooperates to limit the first line core to the first arm section; and/or, the outer surface of the second line core is provided with a second limit button, and the inner wall of the second arm section is provided The second limiting slot cooperates with the second limiting slot, and the second limiting slot cooperates with the second limiting slot to connect the second circuit core to the second arm segment.

Preferably, the first arm section is a fixed arm section, the fixed arm section is fixedly connected with the body; the second arm section is a detachable arm section, the detachable arm section and a power motor for driving the propeller rotation connection.

Preferably, the second arm section is a fixed arm section, and the fixed arm section is fixedly connected with the body; the first arm section is a detachable arm section, the detachable arm section and a power motor for driving the propeller rotation connection.

The present invention also provides an aircraft comprising a fuselage and the detachable arm assembly of any of the above, the detachable arm assembly being disposed on an outer side of the fuselage.

The detachable arm assembly and the aircraft provided by the utility model are provided with a first line core fixedly disposed inside the first arm section, and a second line core fixedly disposed inside the second arm section, so that the first arm When the segment is connected to the second arm segment, the first line core is matched with the second line core, and the line pin is inserted into the line jack to make the first line and the second line conduct, thereby realizing the arm The electrical circuit with the main body is connected, that is, the quick disassembly and assembly of the arm is realized, and the electrical structure in the aircraft arm is quickly disassembled, and the structure is simple, and the efficiency of disassembly and assembly of the arm is improved.

DRAWINGS

In order to more clearly illustrate the technical solutions of the specific embodiments of the present invention, the utility model will be further described in detail below according to the specific embodiments of the present invention and the accompanying drawings.

1 is a schematic view of an embodiment of a detachable arm assembly of the present invention;

Figure 2 is a view showing the separation of the first arm section and the second arm section of the detachable arm assembly shown in Figure 1. schematic diagram;

Figure 3 is a schematic view of the first circuit core in the detachable arm assembly of Figure 1;

4 is a schematic view of a second circuit core in the detachable arm assembly of FIG. 1;

Figure 5 is a schematic illustration of an embodiment of the aircraft of the present invention.

The reference numerals in the drawings are explained below.

10-first arm section; 11-limit boss; 12-first positioning member; 13-positioning hole;

20-second arm section; 21-external thread; 22-second positioning member; 23-mounting portion;

231-fixed hole; 30-first line core; 31-line pin; 32-first limit button;

33-first connection hole; 40-second line core; 41-line jack; 42-second limit button;

43-second connecting hole; 50-fastening screw ring; 51-base ring; 52-pressure ring; 200-body;

300-propeller; 400-powered motor.

detailed description

The technical solutions of the present invention will be described clearly and completely in conjunction with the accompanying drawings. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the description of the present invention, it should be noted that the orientation or positional relationship of the terms “upper”, “inside”, “outside” and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description. The invention and the simplifications of the invention are not to be construed as limiting or limiting the scope of the invention. Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that the terms "installation" and "connection" are to be understood broadly, and may be, for example, a fixed connection or a detachable connection, or Connected integrally; can be mechanical or electrical. When one An element is meant to be "connected" to another element, which may be directly connected to the other element, or one or more. The specific meanings of the above terms in the present invention can be understood by those skilled in the art in a specific case.

Further, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

A specific embodiment of the detachable arm assembly shown in FIGS. 1 and 2 includes a first arm section 10 and a second arm section 20; the first arm section 10 is internally fixedly provided with a first line core The body 30, the two ends of the first line core 30 are respectively provided with a line pin 31 and a first line (not shown), the line pin 31 is electrically connected to the first line; and the second arm section 20 is internally fixed. A second line core 40 is disposed. The two ends of the second line core 40 are respectively provided with a line jack 41 and a second line (not shown). The line jack 41 is provided with a conductive path, a conductive path and a second line. The line is electrically connected; when the first arm section 10 is connected to the second arm section 20, the line pin 31 is inserted into the line jack 41 so that the first line and the second line are turned on; when the first arm section When the second arm section 20 is disassembled, the line pin 31 is simultaneously pulled out of the line jack 41 so that the first line and the second line are not turned on.

The distribution position of the line pins 31 on the first line core 30 needs to correspond to the distribution position of the line jacks 41 on the second line core 40, and the distribution positions of the line pins 31 and the line jacks 41 may be regularly arranged. (as shown in FIG. 3 and FIG. 4), which may also be arranged in an irregular manner, which is not limited in this embodiment. The number of line pins 31 is the same as the number of line jacks 41. The number of line pins 31 corresponds to the number of wires included in the first line, and the number of line jacks 41 corresponds to the number of wires included in the second line. Therefore, the number of line pins 31 and line jacks 41 can be determined according to the number of wires that need to be arranged in the arm. The first line core 30 and the second line core 40 are both made of an insulating material such as plastic, resin, or the like. The effective area of the line pin 31 and the line jack 41 can be similar to the cross section of the corresponding arm section, which fully ensures the safety spacing and electrical area between the pins/jacks, thereby ensuring the reliability of long-term electrical connection. Rated current limit.

The detachable arm assembly is fixedly disposed with a first line core 30 inside the first arm section 10, and the second line core 40 is fixedly disposed inside the second arm section 20 such that the first arm section 10 is When connected to the second arm section 20, the first line core 30 cooperates with the second line core 40, and the line pin 31 is inserted into the line jack 41 to make the first line and the second line conduct; When the first arm section 10 is disconnected from the second arm section 20, the line pin 31 is pulled out from the line jack 41, so that the first line and the second line are not turned on, thereby realizing the arm and the aircraft. The electrical circuit of the main body is turned on or off, that is, the quick disassembly and assembly of the arm is realized, and the electrical structure in the aircraft arm is quickly disassembled, and the structure is simple, and the efficiency of disassembly and assembly of the arm is improved. .

Specifically, the first arm section 10 is provided with a locking portion, and the second arm section 20 is provided with a fitting portion adapted to the locking portion; the locking portion cooperates with the engaging portion to make the first arm The segment 10 is detachably coupled to the second arm segment 20.

As an optional embodiment, the locking portion is a fastening screw 50 that is sleeved on the outer surface of the first arm segment 10, and the inner surface of the fastening screw 50 has an internal thread; the engaging portion is disposed at the second An external thread 21 on the outer surface of the arm section 20; when the first arm section 10 is inserted into the second arm section 20, the rotation of the fastening screw 50 is engaged by the internal thread and the external thread 21 to make the first arm The segment 10 is coupled to the second arm segment 20. When the first arm section 10 and the second arm section 20 need to be detached, the first arm section 10 is separated from the second arm section 20 by loosening the fastening screw 50.

During the locking of the fastening screw 50, the engagement of the threads only provides a secure connection between the fastening screw 50 and the second arm section 20, in order to achieve the first arm section 10 and the second arm section 20 The mutual fixing between them is also required to securely connect the fastening screw 50 to the first arm section 10 in a locked state.

In this regard, the fastening screw 50 has an annular base ring 51, and an end surface of the base ring 51 facing away from the second arm section 20 extends radially inwardly to form an annular pressure ring 52; the first arm section An annular limiting boss 11 is protruded outwardly from the outer peripheral surface of the ring 10. The outer diameter of the limiting boss 11 is larger than the inner diameter of the pressing ring 52, and the outer diameter of the limiting boss 11 is smaller than the inner diameter of the base ring 51; Fasten the screw ring 50 to make the internal thread Engaging with the external thread 21 until the pressure ring 52 abuts against the limiting boss 11, so that when the fastening screw 50 locks the second arm section 20, the limiting boss 11 limits the fastening screw 50 The internal thread is further engaged with the second arm section 20, and at the same time, the limiting boss 11 is also locked in the axial direction of the first arm section 10, that is, the first arm section 10 and the second arm section are realized. 20 fixed connection in the axial direction.

Meanwhile, when the first arm section 10 and the second arm section 20 are matched, the first arm section 10 and the second arm section 20 need to be circumferentially positioned, and the first arm section 10 is provided with the first The positioning member 12, the first positioning member 12 extends along the axial direction of the first arm segment 10; the second arm portion 20 is provided with the second positioning member 22, and the second positioning member 22 is along the axial direction of the second arm portion 20. The first arm section 10 and the second arm section 20 are coupled to the second positioning member 22 by the first positioning member 12 for positioning.

As an optional embodiment, the first positioning member 12 is disposed on the outer wall of the first arm segment 10, the first positioning member 12 is a positioning protrusion, and the second positioning member 22 is disposed on the inner wall of the second arm portion 20. The second positioning member 22 is a positioning groove adapted to the positioning protrusion.

As a modified embodiment, the first positioning member 12 is disposed on the outer wall of the first arm segment 10, the first positioning member 12 is a positioning groove, and the second positioning member 22 is disposed on the inner wall of the second arm portion 20. The second positioning member 22 is a positioning protrusion that is adapted to the positioning groove.

The detachable arm assembly of the present embodiment, while realizing mechanical fixation between the first arm section 10 and the second arm section 20, also requires internal electrical wiring connection, and also due to the first line core 30 The pins of the second line core 40 and the jacks of the second line core 40 need to be inserted one by one. For this, while the first arm section 10 and the second arm section 20 are secured, the first line core 30 is also required. And the second line core 40 is fixedly mounted in the first arm section 10 and the second arm section 20, respectively.

Specifically, the first arm section 10 has a hollow cylindrical shape, and the first line core 30 corresponds to the first arm section 10 in a substantially cylindrical shape, and the outer circumference of the first line core 30 is matched with the first The inner wall of the arm section 10 is adapted and mounted in the first arm section 10 by means of a transition fit or a slight interference fit. If necessary, the glue can be glued to the first arm section. In the inner wall of 10. Of course, the second line core 40 and the second arm section 20 can also be fixed and fixed in the above manner, and details are not described herein.

As shown in FIG. 3 and FIG. 4, the outer surface of the first circuit core 30 is provided with a first limit button 32, and the first arm segment 10 is internally provided with a first limit corresponding to the first limit button 32. a bit slot (not shown), the first limit button 32 cooperates with the first limit slot to limit the first line core 30 to the first arm segment 10; and/or the second line core 40 The outer surface is provided with a second limit button 42. The inner wall of the second arm portion 20 is provided with a second limiting slot (not shown) that cooperates with the second limit button 42. The second limit button 42 and the second limit button 42 The second limiting slot cooperates to limit the connection between the second line core 40 and the second arm section 20, and further facilitates the first line core 30 and the second line by mutual cooperation between the limiting key and the limiting slot. The cores 40 are mounted and positioned in the first arm section 10 and the second arm section 20, respectively. It can be understood that a limiting slot can be disposed on the outer surface of the first circuit core 30, and a limit button adapted to the limiting slot is disposed on the inner wall of the first arm segment 10; and/or, A limiting slot is disposed on the outer surface of the second circuit core 40. The inner wall of the second arm section 20 is provided with a matching limit button, which is not limited in this embodiment.

In addition, the first line core 30 is axially opened with a first connecting hole 33; the second line core 40 is provided with a second connecting hole 43; when the first line core 30 After the second circuit core 40 is mounted in position, the first line core 30 and the second line core 40 are fixedly mounted through the connecting members (not shown) in the first connecting hole 33 and the second connecting hole 43, respectively. In the first arm section 10 and the second arm section 20.

A specific embodiment of the aircraft shown in FIG. 5 includes a body 200 and a detachable arm assembly of the first embodiment, and the detachable arm assembly is disposed outside the body 200.

The above-described aircraft has the advantages described in any of the above, since it has the detachable arm assembly of the first embodiment.

As an alternative embodiment, the first arm segment 10 is a detachable arm segment, the detachable arm segment is coupled to a power motor 400 for driving the rotation of the propeller 300, and the second arm segment 20 is a fixed arm segment. The fixed arm section is fixedly connected to the body 200.

Specifically, the motor lead of the power motor and the first line core 30 in the first arm section 10 The first line is electrically connected, and the inside of the body 200 is provided with a control board for controlling the power motor, and the control board lead is electrically connected to the second line of the second line core 40 of the second arm section 20. Then, when the line pin 31 on the first line core 30 is inserted into the line jack 41 of the second line core 40, the circuit is turned on between the motor and the control board, thereby realizing the control board to the motor. control.

The first arm section 10 is provided with a positioning hole 13 on the outer wall of the first arm section 10, and the first arm section 10 is fixedly connected to the arm body through a rivet (not shown) disposed in the positioning hole 13; the second arm section At least one mounting portion 23 is protruded from the outer surface of the outer surface of the mounting portion 23, and the second arm portion 20 is fixedly connected by a connecting member (not shown) adapted to the fixing hole 231. On the body 200. It can be understood that the first arm section 10 can be integrally formed with the arm body. In this case, the positioning hole 13 is not required. The second arm section 20 can also be integrally formed with the body 200, which is not limited in this embodiment.

As a modified embodiment, the first arm section 10 is a fixed arm section, and the fixed arm section is fixedly connected to the body 200; the second arm section 20 is a detachable arm section, and the detachable arm section is used for The power motor 400 that drives the rotation of the propeller 300 is connected.

It is apparent that the above-described embodiments are merely illustrative of the examples, and are not intended to limit the embodiments. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations. The obvious changes or variations derived therefrom are still within the scope of protection created by the present invention.

Claims

A detachable arm assembly, comprising: a first arm section (10) and a second arm section (20) detachably coupled to the first arm section;

a first line core (30) is disposed inside the first arm section (10), and two ends of the first line core body (30) are respectively provided with a line pin (31) and a first line. The line pin (31) is electrically connected to the first line;

The second arm section (20) is internally provided with a second line core (40), and the two ends of the second line core (40) are respectively provided with a line jack (41) and a second line. a conductive channel is disposed in the line jack (41), and the conductive channel is electrically connected to the second line;

When the first arm section (10) is coupled to the second arm section (20), the line pin (31) is inserted into the line jack (41) such that the first line Conducted with the second line.
The detachable arm assembly according to claim 1, wherein the first arm section (10) is provided with a locking portion, and the second arm section (20) is provided with the a matching portion of the locking portion;

The locking portion cooperates with the engaging portion to detachably connect the first arm segment (10) with the second arm segment (20).
The detachable arm assembly according to claim 2, wherein the locking portion is a fastening screw (50) that is sleeved on an outer surface of the first arm portion (10). The inner surface of the fastening screw (50) has an internal thread;

The mating portion is an external thread (21) provided on an outer surface of the second arm section (20);

When the first arm section (10) is inserted into the second arm section (20), the first arm section (10) is engaged with the external thread by the internal thread and the external thread (21) The second arm section (20) is connected.
The detachable arm assembly of claim 3 wherein said fastening screw The ring (50) has an annular base ring (51), and the base ring (51) extends radially inward away from an end surface of the second arm section (20) to form an annular pressure ring ( 52); the outer peripheral surface of the first arm section (10) protrudes outwardly with an annular limiting boss (11);

The internal thread and the external thread (21) are engaged with each other, and the pressure ring (52) abuts against the limiting boss (11).
The detachable arm assembly according to claim 4, wherein an outer diameter of the limiting boss (11) is larger than an inner diameter of the pressure ring (52), and the limiting boss (11) The outer diameter is smaller than the inner diameter of the base ring (51).
The detachable arm assembly according to any one of claims 1 to 4, wherein the first arm section (10) is provided with a first positioning member (12), and the first positioning member (12) ) extending along the axial direction of the first arm section (10);

The second arm section (20) is provided with a second positioning member (22), and the second positioning member (22) extends along the axial direction of the second arm section (20);

The first arm section (10) and the second arm section (20) are in a positioning connection by the first positioning member (12) and the second positioning member (22).
The detachable arm assembly according to claim 6, wherein the first positioning member (12) is disposed on an outer wall of the first arm segment (10), and the first positioning member (12) Is a positioning protrusion; the second positioning member (22) is disposed on an inner wall of the second arm section (20), and the second positioning member (22) is adapted to the positioning protrusion Positioning groove.
The detachable arm assembly according to claim 6, wherein the first positioning member (12) is disposed on an outer wall of the first arm segment (10), and the first positioning member (12) Is a positioning groove; the second positioning member (22) is disposed on an inner wall of the second arm section (20), and the second positioning member (22) is adapted to the positioning groove Positioning bumps.
The detachable arm assembly according to any one of claims 1-8, wherein an outer surface of the first line core (30) is provided with a first limit button (32), the first The inside of the arm section (10) is provided with a first limiting slot matched with the first limiting key (32), the first limiting position The key (32) cooperates with the first limiting slot to limit the first circuit core (30) to the first arm segment (10); and/or

The outer surface of the second circuit core (40) is provided with a second limit button (42), and the inner wall of the second arm segment (20) is provided with the second limit button (42) a second limiting slot, wherein the second limiting button (42) cooperates with the second limiting slot to limit the second circuit core (40) and the second arm segment (20) Bit connection.
The detachable arm assembly according to any one of claims 1 to 9, wherein the first arm section (10) is a fixed arm section, and the fixed arm section and the body (200) Fixed connection; the second arm section (20) is a detachable arm section, and the detachable arm section is connected to a power motor (400) for driving the rotation of the propeller (300).
The detachable arm assembly according to any one of claims 1 to 9, wherein the second arm section (20) is a fixed arm section, and the fixed arm section and the body (200) A fixed connection; the first arm section (10) is a detachable arm section, and the detachable arm section is coupled to a power motor (400) for driving the rotation of the propeller (300).
An aircraft characterized by comprising: a body (200) and a detachable arm assembly according to any one of claims 1-11, wherein the detachable arm assembly is disposed on the body (200) The outside of the).