Power arm, wing assembly and aircraft

Abstract

The utility model provides a power arm, a wing assembly and an aircraft. The power arm comprises a power arm body, a switching assembly and a reinforcing assembly. The power arm body comprises a pipe body. The switching assembly comprises a first switching piece, and the first switching piece is arranged on the outer wall of the pipe body and is configured to be installed on a wing. The reinforcing assembly comprises a reinforcing piece and a mounting piece, and the reinforcing piece is located in the pipe body and supported on the inner wall of the pipe body. The mounting piece is mounted on the reinforcing piece and the first adapter piece. According to the power arm provided by the invention, the shape of the pipe body of the power arm can be more diversified while the power arm is mounted on the wing, and the connection between the power arm and the wing has higher reliability.

Description

Technical Field

[0001] The present application relates to the technical field of aircraft, and in particular to a power arm, a wing assembly and an aircraft. Background Art

[0002] Vertical take-off and landing aircraft usually need to install power arms on the wings, which are connected to the propellers through the motors on the power arms, and the power arms can provide support for the motors and propellers.

[0003] The power arm includes a tube body, and the propeller is rotatably arranged at the end of the tube body. The wing includes a wing frame, an upper skin and a lower skin. The upper skin and the lower skin are both covered on the wing frame. When the power arm is installed on the wing, the tube body of the power arm is close to the lower skin. When designing the tube body of a traditional power arm, it is required that the shape of the tube body has a high degree of matching with the shape of the lower skin of the wing so that the tube body can be better installed on the wing. For example, the shape of the tube body refers to the shape of the tube body at the end. However, this will limit the shape of the tube body. Utility Model Content

[0004] The present application provides a power arm, a wing assembly and an aircraft, which can realize the installation of the power arm on the wing, not only making the shape of the tube body of the power arm more diversified, but also enhancing the reliability of the connection between the power arm and the wing.

[0005] In a first aspect, an embodiment of the present application provides a power arm, the power arm comprising:

[0006] The power arm body includes a tube body;

[0007] The adapter assembly includes a first adapter, which is disposed outside the tube body and is configured to be mounted on the wing;

[0008] The reinforcement component includes a reinforcement member and a mounting member. The reinforcement member is located in the tube body and supported on the inner wall of the tube body; the mounting member is mounted on the reinforcement member and the first adapter member.

[0009] An embodiment of the present application provides a power arm. By arranging a reinforcement, a mounting member and a first adapter in the power arm, since the first adapter is constructed to be installed on a wing, and the mounting member is installed on the reinforcement and the first adapter, the reinforcement can be installed on the wing through the first adapter, thereby realizing the installation and fixation of the power arm on the wing.

[0010] The tube body is separated from the wing by the first adapter to avoid the shape of the tube body being limited by the shape of the wing, thereby solving the technical problem that the shape of the tube body of the existing power arm is limited by the lower skin of the wing and making the shape of the tube body more diversified.

[0011] Since the reinforcement is supported on the inner wall of the tube body, the strength of the connection between the tube body and the wing can be strengthened. When the reinforcement is installed on the wing through the first adapter, the connection between the tube body and the wing can also have a higher reliability, so that the power arm can be installed on the wing more stably.

[0012] In some optional embodiments, the mounting member has a first end and a second end, the first end is mounted on the reinforcement member, and the second end is exposed outside the tube body and mounted on the first adapter.

[0013] In this way, the mounting member can be mounted on the reinforcement member and the first transition member to connect the reinforcement member and the first transition member.

[0014] In some optional embodiments, the tube body has a first mounting hole that passes through both sides of the tube body, and the first end of the mounting piece is installed on the inside of the reinforcement member on the side facing the first adapter member, so that the mounting piece can be installed on the reinforcement member while being close to the first adapter member so that the mounting piece connects the reinforcement member and the first adapter member; the second end of the mounting piece extends to the outside of the tube body through the first mounting hole so that the mounting piece can be exposed on the outside of the tube body to facilitate the installation of the mounting piece on the first adapter member.

[0015] In some optional embodiments, the mounting member can be detachably mounted on the reinforcement member to facilitate the removal of the power arm.

[0016] In some optional embodiments, the reinforcement member has a second mounting hole, and the mounting member extends into the second mounting hole and is connected to the second mounting hole, so as to achieve installation of the mounting member on the reinforcement member.

[0017] In some optional embodiments, the second mounting hole is a threaded hole, and the mounting member is screwed into the second mounting hole to achieve a threaded connection between the mounting member and the reinforcement member in the second mounting hole, thereby achieving installation and fixation of the mounting member on the reinforcement member and facilitating assembly and disassembly of the mounting member.

[0018] In some optional embodiments, the reinforcement assembly further includes a connecting member, the connecting member is fixed to the reinforcement member, and the mounting member is connected to the connecting member.

[0019] By providing the connecting piece, the mounting piece can be fixed to the reinforcing piece through the connecting piece, and the connecting piece and the reinforcing piece can be processed as two independent components to simplify the structure of the reinforcing piece.

[0020] In some optional embodiments, the connecting member has a third mounting hole, and the mounting member extends into the third mounting hole and is connected to the third mounting hole, so that the mounting member is fixed to the reinforcing member through the connecting member.

[0021] In some optional embodiments, the reinforcement member has a placement cavity and a communication channel, and the communication channel connects the placement cavity and the outer wall of the reinforcement member;

[0022] The connecting piece is embedded in the placement cavity so as to realize the fixing of the connecting piece inside the reinforcement piece. The mounting piece is connected to the connecting piece via the communication channel so that the mounting piece can be connected with the connecting piece, thereby fixing the mounting piece inside the reinforcement piece.

[0023] In some optional embodiments, the third mounting hole is a threaded hole, and the mounting member is screwed into the third mounting hole, so that the mounting member can be installed and fixed in the connecting member while being easy to install and disassemble.

[0024] In some optional embodiments, the first adapter has a first through hole at a position corresponding to the mounting member;

[0025] The mounting member is passed through the first through hole to connect the first adapter and the reinforcement member, so as to realize the connection between the mounting member and the first adapter.

[0026] In some optional embodiments, the adapter assembly further includes a second adapter, which is constructed to be disposed inside the wing and mounted on the wing; the second adapter and the first adapter are connected to each other so that the first adapter can be mounted on the wing through the second adapter.

[0027] In some optional embodiments, the first adapter and the second adapter are connected via a mounting member, so that while the mounting member connects the first adapter and the reinforcement, the second adapter and the first adapter can also be connected to each other through the mounting member, thereby simplifying the assembly of the power arm and the wing.

[0028] In some optional embodiments, the second adapter has a second through hole at a position corresponding to the mounting member;

[0029] The mounting member is passed through the second through hole and the first through hole to connect the first adapter and the second adapter, so that the first adapter, the second adapter and the reinforcement are connected through the mounting member.

[0030] In some optional embodiments, the first through hole and the second through hole are coaxially arranged, and the axis of the first through hole is perpendicular to the axis of the tube body, so that the mounting member can be inserted into the second through hole and the first through hole in sequence from top to bottom, and fixed on the reinforcement member, thereby realizing the connection between the first adapter, the second adapter and the reinforcement member, so as to facilitate the installation of the mounting member.

[0031] In some optional embodiments, the second adapter is detachably connected to the wing to facilitate the removal of the power arm.

[0032] In some optional embodiments, the tube body has a fourth mounting hole, the first adapter has a fifth mounting hole, and the reinforcement has a sixth mounting hole;

[0033] The adapter assembly also includes a fastener, which is inserted into the fifth mounting hole, the fourth mounting hole and the sixth mounting hole and is detachably connected to the reinforcement.

[0034] The first adapter can be further fixed to the reinforcement member by fasteners to enhance the connection effect between the first adapter and the reinforcement member. When assembled with the wing, the first adapter can be pre-fixed to the reinforcement member by fasteners, which can improve the installation efficiency of the power arm on the wing.

[0035] In some optional embodiments, the mounting member and the reinforcement member are threadedly connected, and the mounting member has a first limiting hole, the second adapter has a second limiting hole, and the adapter assembly also includes a fuse, which is passed through the first limiting hole and the second limiting hole; the second adapter limits the rotation of the mounting member relative to the second adapter through the fuse.

[0036] In this way, the rotation of the mounting part can be limited by the fuse to prevent the mounting part from loosening.

[0037] In some optional embodiments, the first adapter has an extension portion, which is used to extend into the wing and be detachably connected to the wing, thereby achieving the connection between the first adapter and the wing while reducing the number of parts of the power arm, thereby further improving the installation efficiency of the power arm on the wing.

[0038] In some optional embodiments, the axis of the first through hole is inclined relative to the axis of the tube body to avoid interference with the extension portion when the mounting member is inserted into the first through hole, thereby affecting the insertion of the mounting member into the first through hole.

[0039] In some optional embodiments, the power arm further comprises a first fairing, which is fixed to the outer wall of the tube body and is configured to abut against the wing;

[0040] At least a portion of the first adapter is located outside the first rectifier.

[0041] In this way, while ensuring the connection between the first adapter and the wing, the first fairing can achieve aerodynamic fairing between the connection area of ​​the tube body and the wing, and can also minimize the impact on the appearance of the power arm.

[0042] Since the reinforcement member in the tube body is connected to the wing via the mounting member, the first fairing can also be a non-load-bearing component, which can reduce the weight of the first fairing to the maximum extent.

[0043] In some optional embodiments, the first fairing is bonded to the outer wall of the tube body so that the first fairing is fixed to the outer wall of the tube body.

[0044] In some optional embodiments, the number of adapter assemblies is more than two, and the more than two adapter assemblies are arranged outside the tube body at intervals along the axial direction of the tube body, and reinforcement assemblies are provided in the tube body at positions opposite to the adapter assemblies.

[0045] By arranging more than two adapter assemblies and reinforcing assemblies at positions opposite to each adapter assemblies in the tube body, while enhancing the fixing effect of the power arm on the tube body, the reinforcing assemblies can be used to provide multi-segment support for the tube body in the axial direction, thereby further enhancing the bearing capacity of the tube body.

[0046] In some optional embodiments, the power arm body further comprises:

[0047] The power device includes a motor and an electronic speed regulator, wherein the motor is configured to be connected to the propeller and drive the propeller to rotate; the electronic speed regulator is electrically connected to the motor and configured to control the rotation speed of the motor;

[0048] The mounting assembly comprises a mounting seat, on which the motor and the electronic speed regulator are fixed, and the mounting seat is detachably connected to the end of the pipe body.

[0049] By setting the mounting seat, the number of mounting seats in the power arm can be reduced while the motor and the electronic speed regulator are fixed at the end of the tube body, so as to simplify the structure of the power arm. In addition, the load of the motor can be transmitted to the tube body of the power arm through the mounting seat, so that the tube body shares the load of the motor, so as to ensure the stability of the power arm structure.

[0050] In some optional embodiments, along the axial direction of the tube body, the mounting seat has a first end and a second end, the first end is located inside the tube body and is detachably connected to the tube body.

[0051] The second end is located outside the tube body, and the motor is fixed to the second end, so that the motor can be fixed and exposed to the outside of the tube body and connected to the propeller.

[0052] In some optional embodiments, the mounting seat has a first mounting surface and a second mounting surface along a direction intersecting the axial direction of the tube body, the first mounting surface faces the propeller, and the motor is mounted on the first mounting surface so that the motor is connected to the propeller;

[0053] The electronic speed regulator and the motor are located on the same side or different sides of the mounting base, so that the electronic speed regulator can be installed on the mounting base and the installation position of the electronic speed regulator on the mounting base can be more diversified to meet the installation requirements of different power arms for the electronic speed regulator.

[0054] In some optional embodiments, the end of the tube body has a mounting notch in the circumference at a position corresponding to the electronic speed regulator, and the electronic speed regulator is located at the mounting notch.

[0055] The electronic speed regulator can be avoided by the installation notch to ensure that the electronic speed regulator is installed at the end of the pipe body.

[0056] In some optional embodiments, the electronic speed regulator is located on the second mounting surface of the mounting base.

[0057] Since the size of the electronic speed controller is larger than that of the motor, the second mounting surface of the mounting base has a larger area than the side wall of the mounting base. Therefore, when the electronic speed controller is located on the second mounting surface of the mounting base, it can facilitate the installation of the electronic speed controller on the mounting base and enhance the fixing effect of the electronic speed controller on the mounting base.

[0058] In some optional embodiments, a closed cavity is formed between the first end and the tube body.

[0059] Since a closed cavity is formed between the first end and the tube body, the end of the tube body forms a closed port. Compared with the structure in which the end of the tube body is open, the setting of the closed cavity can enhance the bending and torsion resistance of the end of the tube body, so as to ensure that the load of the motor can be more efficiently transmitted to the tube body, so as to ensure that the power arm has a higher force transmission efficiency.

[0060] In some optional embodiments, the mounting assembly further includes two support members, and along the axial direction of the tube body, the two support members are fixed on the mounting seat at intervals;

[0061] The support members are all connected to the inner wall of the tube body and abut against the inner wall of the tube body; the support members, the mounting seat and part of the tube wall of the tube body together form a cavity, so that a closed cavity is formed between the first end and the tube body, and the mounting seat can be supported and fixed inside the tube body by the support members to enhance the fixing effect of the mounting seat at the end of the tube body.

[0062] In some optional embodiments, the rotation axis of the motor is perpendicular to the axis of the tube, or the rotation axis of the motor is tilted relative to the axis of the tube. This allows for more diverse ways to set the motor at the end of the tube. Furthermore, when the rotation axis of the motor is tilted relative to the axis of the tube, it also helps to enhance the heading control capability of the aircraft and improve the heading accuracy.

[0063] In some optional embodiments, the power arm body further includes a fairing assembly, the fairing assembly includes a second fairing, the second fairing is arranged outside the motor and connected to the outer wall of the tube body;

[0064] The second fairing is provided with an avoidance opening, and at least a part of the motor is exposed to the outside of the second fairing through the avoidance opening.

[0065] The second fairing can be used to rectify the airflow passing through the motor and between the motor and the tube body, thereby realizing aerodynamic rectification of the power arm at the motor. At least part of the motor is exposed to the outside of the second fairing through the avoidance opening, so as to facilitate the connection between the motor and the propeller.

[0066] In some optional embodiments, the fairing assembly further includes a third fairing, which is disposed outside the electronic speed regulator and connected to the outer wall of the tube body; the third fairing is detachably connected to the second fairing.

[0067] The airflow passing through the electronic speed governor and between the electronic speed governor and the tube body is rectified by the third fairing, thereby realizing pneumatic rectification of the power arm at the electronic speed governor.

[0068] Furthermore, the third fairing is detachably connected to the second fairing, which facilitates the installation of the third fairing and the second fairing on the motor or the electronic speed regulator and also facilitates the assembly and disassembly of the motor or the electronic speed regulator.

[0069] In some optional embodiments, the fairing assembly further includes a fairing support frame, the fairing support frame is located between the third fairing and the second fairing, and is supported on the inner walls of the third fairing and the second fairing;

[0070] The rectifying support frame is installed at one end of the mounting seat away from the pipe body.

[0071] The fairing support frame can support the ends of the third fairing and the second fairing away from the tube body, so as to enhance the stability of the third fairing and the second fairing being assembled on the tube body.

[0072] In some optional embodiments, the third fairing has a heat dissipation port to facilitate heat dissipation of the electronic speed regulator.

[0073] In some optional embodiments, the electronic speed regulator has a heat dissipation fin, and the heat dissipation port is arranged opposite to the heat dissipation fin, so that the heat on the heat dissipation fin can be dissipated to the outside of the power arm through the heat dissipation port, so as to improve the heat dissipation efficiency of the electronic speed regulator;

[0074] The third fairing is provided with a heat dissipation grille, which is located at the heat dissipation port.

[0075] On the basis that the heat on the cooling fins can be dissipated to the outside of the power arm through the cooling openings, the cooling grilles can shield and modify the cooling openings to reduce the impact of the openings on the aerodynamic fairing effect of the third fairing.

[0076] In some optional embodiments, the tube body is an integrally molded structure, which can avoid the problem of precision deviation when bonding two or more tubular structures in the split structure tube body at the joint. In addition, the bonding process of the tubular structure can be omitted, reducing the assembly work of the power arm, which is more conducive to ensuring the dimensional accuracy of the tube body while enhancing the structural stability of the tube body.

[0077] In some optional embodiments, the inner diameter of the tube body is equal along the axial direction of the tube body, so that the reinforcement member is assembled into the tube body from the end of the tube body; or,

[0078] In the axial direction of the tube body, the inner diameter of the end of the tube body is larger than the inner diameter of the tube body where the reinforcement piece is installed, which can also facilitate the assembly of the reinforcement piece from the end of the tube body into the tube body.

[0079] In some optional embodiments, when the inner diameter of the tube body along the axial direction is equal, the wall thickness of the tube body along the axial direction is equal, which can make the outer wall of the tube body smoother to avoid turbulence when the airflow flows through the tube body.

[0080] In some optional embodiments, the tube body is a carbon fiber tube or a metal tube, so that the material of the tube body is more diversified to adapt to different power arms.

[0081] Furthermore, when the power arm of the present application is assembled on both sides of the fuselage, except for the different structures at the installation notches of the tube body, which makes it impossible to use the tube body universally on both sides of the fuselage, the remaining parts in the power arm can be used universally on both sides of the fuselage, which can reduce the number of molds used in the production process of the power arm, thereby further reducing the manufacturing cost of the power arm.

[0082] On the second aspect, an embodiment of the present application also provides a wing assembly, which includes a wing and a power arm as described above, wherein a first adapter in a reinforcement assembly in the power arm is installed on the wing to facilitate the disassembly and assembly of the power arm, and not only can the shape of the tube body be more diversified, but also the connection between the tube body and the wing can be made more reliable.

[0083] In some optional embodiments, the wing includes a wing frame, an upper skin and a lower skin, wherein the upper skin and the lower skin cover both sides of the wing frame in the thickness direction; the wing frame includes a wing spar;

[0084] The first adapter is installed on the wing spar, so that when the first adapter is installed on the wing, the stability of the connection between the power arm and the wing can be enhanced because the wing spar is the main load-bearing component in the wing.

[0085] In a third aspect, an embodiment of the present application further provides an aircraft, comprising a fuselage and a power arm as described in any one of the above items, or a wing assembly as described in any one of the above items, wherein the power arm or the wing assembly is installed on the side of the fuselage.

[0086] The power arm in the aircraft of the present application can not only make the shape of the tube body more diversified on the basis of being easy to disassemble and assemble, but also make the connection between the tube body and the wing more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0087] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0088] Figure 1 A schematic diagram of the structure of a UAV aircraft provided for this application;

[0089] Figure 2 A partial schematic diagram of a wing assembly provided in the present application;

[0090] Figure 3 A schematic diagram of the connection between a power arm and a wing provided in this application;

[0091] Figure 4 A cross-sectional view of the connection between a power arm and a wing provided in the present application;

[0092] Figure 5 for Figure 3 The enlarged view of point B in the middle;

[0093] Figure 6 A cross-sectional view of another power arm connected to a wing provided in the present application;

[0094] Figure 6a A schematic diagram of the connection between a mounting member and a reinforcement member provided in this application;

[0095] Figure 7 for Figure 4 A partial schematic diagram of the

[0096] Figure 8 An exploded view of a power arm provided for this application;

[0097] Fig. 9 for Figure 8 Enlarged view of point C in the middle;

[0098] Fig.10 For fuse Figure 4 Installation diagram in the figure;

[0099] Fig.11 A schematic diagram of another connection between a power arm and a wing provided in this application;

[0100] Fig.12 for Fig.11 Enlarged view of the middle D part;

[0101] Fig.13 for Fig.11 A cross-sectional view of the connection between the power arm and the wing;

[0102] Fig.14 A schematic diagram of the structure of a power arm provided in this application;

[0103] Fig.15 for Fig.14 Enlarged view of the middle E part;

[0104] Fig.16 for Figure 3 Enlarged view of the middle F part;

[0105] Fig.17 for Figure 8 Enlarged view of the middle G section;

[0106] Fig.18 This is a partial schematic diagram of the interior of the power arm in the mounting base.

[0107] Reference numerals:

[0108] 100 - aircraft;

[0109] 1-fuselage; 2-wing; 21-upper skin; 211-cover; 22-lower skin; 23-spar; 231-web; 232-front spar; 233-rear spar;

[0110] 3-Power arm;

[0111] 31-tube body; 311-first mounting hole; 312-fourth mounting hole; 313-mounting notch;

[0112] 32-reinforcement assembly; 321-reinforcement member; 3211-second mounting hole; 3212-placement cavity; 3213-communication channel; 3214-threading hole; 3215-weight reduction hole; 3216-sixth mounting hole; 322-mounting member; 3221-elastic clamping portion; 3222-first limiting hole; 323-connecting member; 3231-third mounting hole;

[0113] 33-first adapter; 331-first through hole; 332-fifth mounting hole; 333-extension portion;

[0114] 34-second adapter; 341-second through hole; 342-second limiting hole; 343-lifting hole;

[0115] 35-Fuse;

[0116] 36- fairing; 361- first fairing; 3611- second opening; 3612- third opening; 362- second fairing; 3621- avoidance opening; 363- third fairing; 3631- radiator grille;

[0117] 37-power device; 371-motor; 372-electronic speed regulator; 3721-heat sink;

[0118] 38-mounting assembly; 381-mounting seat; 3811-first mounting surface; 3812-second mounting surface; 382-supporting member;

[0119] 39-rectifier support frame;

[0120] 4- Propeller;

[0121] The X direction is the width of the wing; the Y direction is the length of the wing; and the Z direction is the thickness of the wing. DETAILED DESCRIPTION

[0122] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0123] The terms used in the implementation section of this application are only used to explain the specific embodiments of the application and are not intended to limit the application.

[0124] The embodiment of the present application provides an aircraft. The aircraft may be a vertical take-off and landing aircraft. A vertical take-off and landing aircraft may be understood as an aircraft capable of vertical take-off and landing. For example, the aircraft of the present application may include an unmanned aerial vehicle or a manned aerial vehicle. In the present application, the type of aircraft is not particularly limited.

[0125] The structure of the aircraft of the present application is further explained below by taking a UAV aircraft as an example.

[0126] Figure 1 The structure of a UAV aircraft is schematically shown. Figure 1As shown, the aircraft 100 includes a fuselage 1 and a wing assembly (not shown). The wing assembly can be installed on the side of the fuselage 1. The wing assembly includes a wing 2 and a power arm 3. The power arm 3 is connected to the wing 2 to achieve the installation and fixation of the power arm 3 on the aircraft 100. The power arm 3 can be installed on the side of the fuselage 1 to achieve the installation of the wing assembly on the side of the fuselage 1. Specifically, the power arm 3 can be installed on the side of the fuselage 1 through the connected wing 2.

[0127] Figure 2 A partial schematic diagram of a wing assembly is schematically shown. Figure 1 and Figure 2 As shown, the wing 2 includes a wing frame (not shown), an upper skin 21 and a lower skin 22. The upper skin 21 and the lower skin 22 cover both sides of the wing frame in the thickness direction. The thickness direction of the wing frame is parallel to the thickness direction of the wing 2, specifically, refer to the Z direction.

[0128] Figure 3 A schematic diagram of the connection between the power arm 3 and the wing 2 is shown schematically. Figure 3 The upper skin 21 and the lower skin 22 are omitted, and only part of the structure of the wing skeleton is shown. Figure 3 As shown, the wing frame includes a spar 23 and a rib (not shown). The spar 23 is a crossbeam of the wing frame in the length direction. The length direction of the wing frame is parallel to the length direction of the wing 2, which can be seen in the Y direction. The rib is a rib of the wing 2 in the width direction. The width direction of the wing frame is parallel to the width direction of the wing 2, which can be seen in the X direction. The connection between the spar 23 and the rib and the distribution in the wing frame can be seen in the relevant description of the existing unmanned aerial vehicle, which will not be repeated here.

[0129] See also Figure 3 The middle part of the power arm 3 can be connected to the wing beam 23 of the wing 2 to achieve the installation and fixation of the power arm 3 on the wing 2, which can maintain the balance of force on the two ends of the power arm 3 in the axial direction.

[0130] See also Figure 3 Combined with Figure 1 As shown, in addition to the wing 2 and the power arm 3, the wing assembly also includes a propeller 4. The propeller 4 is rotatably arranged at two ends of the power arm 3 in the axial direction. The power arm 3 can drive the propeller 4 to rotate.

[0131] The power arm 3 has a power device 37 (not shown) at the end in the axial direction. The power device 37 includes a motor 371. The motor 371 is configured to be connected to the propeller 4 and drive the propeller 4 to rotate. For example, when the aircraft 100 is in the vertical take-off and landing stage, the motor 371 on the power arm 3 is running, which drives the propeller 4 to rotate.

[0132] The power device 37 further includes an electronic speed regulator 372 (hereinafter referred to as an electronic speed regulator, not shown). The electronic speed regulator 372 is electrically connected to the motor 371 and is configured to control the rotation speed of the motor 371. In this way, under the control of the electronic speed regulator 372, the rotation of the motor 371 can be changed, thereby achieving the adjustment of the rotation speed of the propeller 4.

[0133] It should be noted that the electronic speed governor 372 can be electrically connected to the flight control system of the aircraft 100 through the power transmission line in the wing 2, and can also be electrically connected to the motor 371 through the power transmission line in the wing 2. The electronic speed governor 372 can control the speed of the motor 371 under the control signal of the flight control system of the aircraft 100. The flight control system and its control of the electronic speed governor 372 are well known to those skilled in the art and will not be described in detail here.

[0134] The wing assembly may include two power arms 3. The two power arms 3 may be distributed on both sides of the wing 2 in the Y direction and connected to the spar 23 of the wing 2.

[0135] In order to solve the technical problem that the shape of the tube body of the existing power arm in the background technology is limited, the embodiment of the present application also provides a wing assembly. The wing assembly may include a wing 2 and a power arm 3. The power arm 3 is installed on the wing 2, so that the shape of the tube body of the power arm 3 of the present application is not limited to the shape of the lower skin 22 of the wing 2, so that the shape of the tube body is more diversified.

[0136] The structure of the power arm 3 of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0137] Figure 4 A schematic cross-sectional view of the connection between the power arm 3 and the wing 2 is shown. Figure 4 The cross section can be seen in Figure 2 AA section in. Figure 4 The spar 23 of the wing 2 is not shown. Figure 5 Shows Figure 3 Enlarged view of point B in the middle.

[0138] See also Figure 4 and Figure 5 As shown, the power arm 3 includes a power arm body (not shown) and an adapter assembly. The power arm body includes a tube body 31. The adapter assembly includes a first adapter 33. The first adapter 33 is arranged outside the tube body 31 and is configured to be installed on the wing 2 to achieve the fixing of the first adapter 33 on the wing 2.

[0139] The first adapter 33 and the tube body 31 may be two independent structural members. Alternatively, the first adapter 33 may also be integrally connected to the outer wall of the tube body 31 and form a structural member with the tube body 31.

[0140] The structure of the power arm 3 is further described below by taking the first adapter 33 and the tube body 31 as two independent structural components.

[0141] See also Figure 4 and Figure 5 As shown, the power arm 3 also includes a reinforcement assembly 32. The reinforcement assembly 32 includes a reinforcement member 321 and a mounting member 322. Figure 4 As shown, the reinforcing member 321 is located in the tube body 31 and supported on the inner wall of the tube body 31. The mounting member 322 is mounted on the reinforcing member 321 and the first adapter 33, so that the reinforcing member 321 can be connected to the first adapter 33 through the mounting member 322.

[0142] Since the first adapter 33 is configured to be mounted on the wing 2 , when the reinforcement 321 can be connected to the first adapter 33 via the mounting member 322 , the reinforcement 321 can be mounted on the wing 2 via the first adapter 33 .

[0143] Since the reinforcement 321 is supported on the inner wall of the tube body 31, when the reinforcement 321 is installed on the wing 2 through the first adapter 33, the power arm 3 can be installed and fixed on the wing 2, and the tube body 31 can be separated from the wing 2 by the first adapter 33 to avoid the shape of the tube body 31 being limited by the shape of the wing 2, thereby solving the technical problem that the shape of the tube body of the existing power arm is limited by the lower skin 22 of the wing 2, and making the shape of the tube body 31 more diversified.

[0144] The shape of the tube body 31 of the present application may be the shape of the tube body 31 at the end. The shape of the tube body 31 may include but is not limited to: Figure 4 In the embodiment of the present invention, the tube body 31 may be a circular tube. For example, the inner wall of the tube body 31 may be in a rectangular shape (including a square shape), etc. In this case, the tube body 31 may be a rectangular tube. In the present application, the shape of the tube body 31 is not particularly limited.

[0145] The structure of the power arm 3 of the present application is further described below by taking the tube body 31 as a round tube as an example.

[0146] The position where the tube body 31 is provided with the reinforcement 321 is the connection between the tube body 31 and the wing 2. Since the reinforcement 321 is supported on the inner wall of the tube body 31, it can strengthen the strength of the connection between the tube body 31 and the wing 2, so as to improve the bearing capacity of the tube body 31 at the connection with the wing 2, and ensure the stability of the tube body 31 and the power arm 3 structure. In this way, when the reinforcement 321 is installed on the wing 2 through the first adapter 33, the connection between the tube body 31 and the wing 2 can also have a higher reliability, so that the power arm 3 can be installed on the wing 2 more stably.

[0147] Specifically, when the power arm 3 is connected to the wing 2, the load applied by the wing 2 on the power arm 3 can be transmitted to the tube body 31, so that the reinforcement 321 can concentrate on bearing the load applied by the wing 2 on the tube body 31, so as to share the load applied by the wing 2 on the tube body 31, improve the bearing capacity of the tube body 31, and ensure the stability of the tube body 31 and the power arm 3 structure.

[0148] Furthermore, the power arm 3 will apply a load to the tube body 31 when in operation. For example, when the motor 371 on the power tube is running and drives the propeller 4 to rotate, the motor 371 will apply a load to the tube body 31 when in operation. The load applied to the tube body 31 can be transferred to the reinforcement 321 through the tube body 31, so that the reinforcement 321 can also concentrate on bearing the load applied to the tube body 31 by the power arm 3 when in operation, thereby sharing the load applied to the tube body 31 by the power arm 3. It can also improve the bearing capacity of the tube body 31 and ensure the stability of the structure of the tube body 31 and the power arm 3.

[0149] Since the surface of the lower skin 22 of the wing 2 is a curved surface (not shown), and since the shape of the outer wall of the tube 31 may be different from the lower skin 22, an irregular gap exists between the lower skin 22 of the wing 2 and the outer wall of the tube 31. For example, when the outer wall of the tube 31 may be an arc surface, an irregular gap exists between the lower skin 22 and the outer wall of the tube 31.

[0150] Since the first adapter 33 is located outside the tube 31 and is installed on the wing 2, the first adapter 33 can also fill the gap between the wing 2 and the outer wall of the tube 31 to enhance the installation effect of the reinforcement 321 on the wing 2 and achieve the reliability of force transmission (load transmission) between the wing 2 and the reinforcement 321. For example, the first adapter 33 can fill the gap between the lower skin 22 of the wing 2 and the outer wall of the tube 31.

[0151] See also Figure 4 and Figure 5 As shown, in order to enhance the filling effect of the first adapter 33 on the gap, the side of the first adapter 33 close to the wing 2 can be set to a shape that matches the surface of the lower skin 22, and the side of the first adapter 33 close to the tube 31 can be set to a shape that matches the outer wall of the tube 31. In this way, the surface of the first adapter 33 becomes a contoured structure that matches the shapes of the lower skin 22 and the tube 31, so as to further enhance the connection effect of the mounting member 322 on the reinforcement member 321 and the wing 2, and enhance the reliability of force transmission between the wing 2 and the reinforcement member 321.

[0152] The first adapter 33 may be a metal part, so that the first adapter 33 has a high strength to ensure the connection effect between the first adapter 33 and the wing 2. For example, the first adapter may be made of a metal with a high strength, such as steel.

[0153] The tube body 31 can be a carbon fiber tube or a metal tube, so that the material of the tube body 31 is more diversified to adapt to different power arms 3. The carbon fiber tube can be simply referred to as a carbon tube. The material of the carbon tube adopts the existing carbon fiber composite material. The carbon fiber composite material has a ply. The ply is mainly made of fabric and can be set according to the load-bearing requirements of the carbon tube. Here, the design of the ply is not particularly limited. In addition to the ply, the carbon fiber composite material also has a unidirectional tape. Through the design of the unidirectional tape, the bending stiffness of the carbon tube can be improved.

[0154] The tube body 31 of the present application is a tube body that is closed in the circumferential direction. At this time, the cross section of the tube body 31 in the axial direction is a closed shape. Along the circumference of the tube body 31, the wall thickness of the tube body 31 of the present application is equal to simplify the structure of the tube body 31. Accordingly, along the axial direction of the tube body 31, the wall thickness of the tube body 31 of the present application can be equal or unequal.

[0155] In some embodiments, along the axial direction of the tube body 31, the inner diameters of the tube body 31 may be equal, so that the reinforcement member 321 can be assembled into the tube body 31 from the end of the tube body 31. Alternatively, in other embodiments, along the axial direction of the tube body 31, the inner diameter of the end of the tube body 31 may be larger than the inner diameter of the tube body 31 where the reinforcement member 321 is installed, which can also facilitate the reinforcement member 321 to be assembled into the tube body 31 from the end of the tube body 31.

[0156] It should be noted that when the inner diameters of the ends of the tube body 31 are equal in the axial direction of the tube body 31, the wall thickness of the tube body 31 of the present application can be equal along the axial direction of the tube body 31 so that the bearing force of each section of the tube body 31 in the axial direction will not be too different.

[0157] Correspondingly, in the axial direction of the tube body 31, when the inner diameter of the end of the tube body 31 is larger than the inner diameter of the tube body 31 at the installation reinforcement 321, the wall thickness of the tube body 31 at the end can be smaller than the wall thickness of the tube body 31 at the reinforcement 321 to reduce the weight of the tube body 31 at the end, thereby avoiding the inner diameter at the end of the tube body 31 being too large, affecting the bearing force of the tube body 31 at the reinforcement 321, and avoiding twisting of the tube body 31 at the reinforcement 321.

[0158] It should be noted that when the inner diameter of the tube body 31 along the axial direction is equal and the wall thickness of the tube body 31 along the axial direction is equal, the outer wall of the tube body 31 can be made smoother to avoid turbulence when the airflow flows through the tube body 31.

[0159] When the tube body 31 can be a metal tube, the tube body 31 can be a metal hollow profile. For example, the tube body 31 can be made of aluminum profile.

[0160] The reinforcement member 321 may be a metal member so that the reinforcement member 321 has a higher strength. Figure 4 As shown, the surface of the reinforcement 321 facing the inner wall of the tube body 31 can be understood as the outer wall of the reinforcement 321. In other words, the outer wall of the reinforcement 321 can be regarded as the surface of the reinforcement 321 along the circumference of the tube body 31. The shape of the outer wall of the reinforcement 321 can be adapted to the shape formed by the inner wall of the tube body 31. In the present application, the shape formed by the inner wall of the tube body 31 is the same as the shape formed by the outer wall of the tube body.

[0161] It should be noted that the matching mentioned in the present application can be understood as being the same or similar. For example, when the shape formed by the inner wall of the tube body 31 is circular, the shape of the outer wall of the reinforcement 321 can also be circular, so that the shape of the outer wall of the reinforcement 321 and the shape formed by the inner wall of the tube body 31 have a high degree of matching, which can enhance the supporting effect of the reinforcement 321 on the tube body 31.

[0162] The reinforcement member 321 may also be connected to the tube body 31 through a fixing member, so as to further enhance the stability of the connection between the reinforcement member 321 and the tube body 31 through the fixing member, so that the load can be better transferred between the reinforcement member 321 and the tube body 31, so as to ensure that the load can be reliably transferred between the reinforcement member 321 and the tube body 31. The fixing member may be a blind rivet or the like.

[0163] See also Figure 4 As shown, the mounting member 322 has a first end (not shown) and a second end (not shown). The first end is mounted on the reinforcement member 321, so that the mounting member 322 is mounted on the reinforcement member 321. The second end is exposed outside the tube body 31 and is mounted on the first adapter 33. In this way, the mounting member 322 can be mounted on the reinforcement member 321 and the first adapter 33 to connect the reinforcement member 321 and the first adapter 33.

[0164] The mounting member 322 can be fixedly connected to the reinforcing member 321 by welding, integral formation, etc. In order to facilitate the disassembly and assembly of the power arm 3, the mounting member 322 can be detachably mounted on the reinforcing member 321.

[0165] The structure of the power arm 3 is further described below by taking the example that the mounting member 322 is detachably mounted on the reinforcing member 321 .

[0166] Figure 6 Another cross-sectional view schematically shows another connection between the power arm 3 and the wing 2. Figure 6 The cross section can refer to the AA cross section mentioned above. Figure 6 The mounting member 322 is not shown.

[0167] See also Figure 6 Combined with Figure 4 As shown, the tube body 31 has a first mounting hole 311 that runs through both sides of the tube body 31. That is, the first mounting hole 311 can be understood as a through hole on the tube body 31. The first mounting hole 311 can be a non-threaded hole. For example, the non-threaded hole can be a plain hole.

[0168] The first end of the mounting member 322 is installed inside the reinforcement member 321 on the side facing the first adapter member 33 so that when the mounting member 322 is installed on the reinforcement member 321, the mounting member 322 can be close to the first adapter member 33 to facilitate the mounting member 322 to connect the reinforcement member 321 and the first adapter member 33.

[0169] The second end of the mounting member 322 extends to the outside of the tube body 31 through the first mounting hole 311 , so that the mounting member 322 can be exposed outside the tube body 31 , thereby enabling the mounting member 322 to be installed on the first adapter 33 .

[0170] See also Figure 6 As shown, in some embodiments, the reinforcement member 321 may have a second mounting hole 3211 . The mounting member 322 may extend into the second mounting hole 3211 and be connected to the second mounting hole 3211 , so as to achieve the installation of the mounting member 322 on the reinforcement member 321 .

[0171] The second mounting hole 3211 may be a threaded hole. The mounting member 322 is screwed into the second mounting hole 3211 to achieve a threaded connection between the mounting member 322 and the reinforcement member 321 in the second mounting hole 3211, so that the mounting member 322 can be installed and fixed on the reinforcement member 321, and the mounting member 322 can be easily assembled and disassembled. At this time, the mounting member 322 may be a screw, a bolt, etc.

[0172] It should be noted that, in some embodiments, when the mounting member 322 is inserted into the second mounting hole 3211, the end of the mounting member 322 can also be elastically engaged with the reinforcement member 321, so that the mounting member 322 can be installed and fixed on the reinforcement member 321 while being able to be assembled and disassembled.

[0173] Figure 6a A schematic diagram of the connection between the mounting member 322 and the reinforcing member 321 is shown. Figure 6aIn the embodiment, the end of the mounting member 322 is inserted into the second mounting hole 3211 and elastically clamped with the reinforcement member 321. At this time, the second mounting hole 3211 can be a non-threaded hole. For example, the end of the mounting member 322 can have two elastic clamping parts 3221. One end of the two elastic clamping parts 3221 is connected to each other, and there is a gap between the other ends. In the process of the end of the mounting member 322 being inserted into the second mounting hole 3211, the two elastic clamping parts 3221 will interfere with the reinforcement member 321, and the reinforcement member 321 will squeeze the two elastic clamping parts 3221 to elastically deform toward the side close to each other. After the mounting member 322 is installed in place in the second mounting hole 3211, the two elastic clamping parts 3221 will be elastically deformed toward the side away from each other under the action of elastic force, and abut against the hole wall of the second mounting hole 3211, so as to realize the elastic clamping of the end of the mounting member 322 with the reinforcement member 321.

[0174] When it is necessary to remove the mounting member 322, an external force can be applied to the mounting member 322 to cause the two elastic clamping portions 3221 of the mounting member 322 to elastically deform toward the side close to each other, and before the two elastic clamping portions 3221 abut against the hole wall of the second mounting hole 3211 again, the end of the mounting member 322 is separated from the second mounting hole 3211, thereby achieving the disassembly of the mounting member 322. Alternatively, to facilitate the disassembly of the mounting member 322, a hole can be opened at the position of the reinforcing member 321 corresponding to the elastic clamping portion 3221, so that when an external force acts on the hole, the mounting member 322 can be disassembled.

[0175] Figure 7 Shows Figure 4 A partial schematic diagram of the . Figure 7 The mounting member 322 is not shown. Figure 8 The exploded view of a power arm 3 is schematically shown. Figure 7 and Figure 8 Combined with Figure 4 As shown, in some embodiments, the reinforcement assembly 32 may further include a connecting member 323. The connecting member 323 may be fixed to the reinforcement member 321, and the mounting member 322 may be connected to the connecting member 323, so that the mounting member 322 may be fixed to the reinforcement member 321 through the connecting member 323, and the connecting member 323 and the reinforcement member 321 may be processed as two independent structural members to simplify the structure of the reinforcement member 321.

[0176] In some embodiments, the connecting member 323 has a third mounting hole 3231 , and the mounting member 322 extends into the third mounting hole 3231 and is connected to the third mounting hole 3231 , so that the mounting member 322 is installed on the reinforcing member 321 through the connecting member 323 .

[0177] See also Figure 8As shown, the number of adapter assemblies is more than two. More than two adapter assemblies are arranged outside the tube body 31 at intervals along the axial direction of the tube body 31, and the first adapter 33 of the adapter assembly realizes the connection of the power arm 3 with the wing 2 at different positions, while further enhancing the stability of the connection between the power arm 3 and the wing 2.

[0178] A reinforcing assembly 32 is provided at a position in the tube body 31 opposite to each adapter assembly, so that the first adapter 33 in the adapter assembly can be connected to the tube body 31 through the corresponding reinforcing assembly 32. At this time, the number of reinforcing assemblies 32 is more than two, and the more than two reinforcing assemblies 32 are arranged inside the tube body 31 at intervals along the axial direction of the tube body 31, and the reinforcing members 321 of each reinforcing assembly 32 can also be supported on the inner wall of the tube body 31 along the axial direction of the tube body 31, so as to enhance the bearing capacity of the reinforcing assembly 32 on the tube body 31.

[0179] Figure 8 The structure of two first adapters 33 and two reinforcement components 32 is shown in FIG. At this time, the tube body 31 and the wing 2 have two connections, which does not constitute a limitation on the connection between the power arm 3 and the wing 2. For example, the tube body 31 and the wing 2 may also have more (greater than two) connections. When the tube body 31 and the wing 2 have more connections, the number of adapter components may also be multiple, and correspond one to one with the connections. In the present application, the number of adapter components is not limited.

[0180] The structure of the power arm 3 is further described below by taking two adapter assemblies and two reinforcement assemblies 32 as an example.

[0181] The tube body 31 of the present application may include two or more (including two) mutually bonded tubular structures, that is, the tube body 31 may be a split structure. Alternatively, the tube body 31 of the present application may also be an integrally formed structure (referred to as an integral structure). In the present application, whether the tube body 31 is an integral structure is not particularly limited.

[0182] When the tube body 31 includes more than two mutually bonded tubular structures, the reinforcing member 321 may be pre-installed inside the corresponding tubular structure before bonding the tubular structures. The joint of the tubular structure may be located between two adapter components.

[0183] When the tube body 31 is an integrated structure, the reinforcing member 321 can be placed into the inner wall of the tube body 31 through the end of the tube body 31, and the reinforcing member 321 can be pushed by the external structure so that the reinforcing member 321 moves along the axial direction of the tube body 31 to the first mounting hole 311 of the tube body 31 by sliding or the like. In this way, the mounting member 322 can be inserted into the first mounting hole 311 and fixed on the reinforcing member 321.

[0184] Compared with the tube body 31 adopting an integrated structure, when the tube body 31 adopts a split structure, it is convenient to pre-install the structural parts (such as the reinforcement part 321, etc.) of the power arm 3 in the tube body 31.

[0185] Compared with the split structure of the tube body 31, when the tube body 31 adopts an integrated structure, it can avoid the problem of accuracy deviation when bonding two or more tubular structures in the split structure of the tube body at the joint, and the bonding process of the tubular structure can be omitted, reducing the assembly work of the power arm 3, which is more conducive to ensuring the dimensional accuracy of the tube body 31 and enhancing the structural stability of the tube body 31.

[0186] When the tube body 31 is an integrated structure, the tube body 31 can be rolled and formed by combining an inner core mold and an outer mold group to ensure that the inner and outer walls of the tube body 31 are smooth. In this application, the manufacturing method of the tube body 31 is not further described.

[0187] The first adapter 33 can be detachably connected to the spar 23 in the wing frame to achieve a detachable connection between the first adapter 33 and the wing 2 (see Figure 6 At the same time, since the spar 23 is the main load-bearing member in the wing 2, when the first adapter 33 is detachably connected to the spar 23, the stability of the connection between the power arm 3 and the wing 2 can be enhanced. For example, the first adapter 33 can be detachably connected to the web 231 of the spar 23. The web 231 can be understood as the side wall of the spar 23. The corresponding position of the tube body 31 and the spar 23 can form a connection point where the tube body 31 is connected to the wing 2.

[0188] The spar 23 in the wing frame may include a front spar 232 and a rear spar 233 spaced apart in the X direction (see Figure 3 ). The front spar 232 is close to the nose of the aircraft 100, and the rear spar 233 is close to the tail of the aircraft 100. The two adapter assemblies can be distributed on the side where the front spar 232 and the rear spar 233 are away from each other, and the first adapter 33 in the two adapter assemblies is connected to the web 231 of the front spar 232 or the rear spar 233 respectively.

[0189] The structure of the power arm 3 is further described below by taking the connection between a transition assembly, a reinforcement assembly 32 and a wing 2 as an example.

[0190] Fig. 9 Shows Figure 8 Enlarged view of point C in the middle. Fig. 9 Combined with Figure 7 and Figure 4As shown, in some embodiments, the reinforcement member 321 may have a placement cavity 3212 and a communication channel 3213. The communication channel 3213 communicates the placement cavity 3212 with the outer wall of the reinforcement member 321. The connecting member 323 is embedded in the placement cavity 3212 to achieve the fixing of the connecting member 323 inside the reinforcement member 321. At this time, the connecting member 323 can be understood as an insert in the reinforcement member 321.

[0191] The mounting member 322 is connected to the connecting member 323 via the communicating channel 3213. That is, the mounting member 322 is connected to the third mounting hole 3231 of the connecting member 323 via the communicating channel 3213. In this way, by setting the connecting member 323, the mounting member 322 can be fixed inside the reinforcing member 321.

[0192] Compared with the above-mentioned method in which the mounting member 322 is directly connected to the second mounting hole 3211 of the reinforcement member 321, the connection member 323 and the reinforcement member 321 can be processed separately through the setting of the connection member 323, which can simplify the structure of the reinforcement member 321 and reduce the processing difficulty of the reinforcement member 321.

[0193] See also Figure 7 As shown, the third mounting hole 3231 may be a threaded hole, and the mounting member 322 is screwed into the third mounting hole 3231 to achieve threaded connection between the mounting member 322 and the connecting member 323 in the third mounting hole 3231, so that the mounting member 322 can be installed and fixed in the connecting member 323, and the mounting member 322 can be easily disassembled. At this time, the mounting member 322 may be a screw, a bolt, etc.

[0194] It should be noted that the mounting member 322 may also be elastically snap-fitted into the third mounting hole 3231. In this case, the third mounting hole 3231 may be a non-threaded hole. The elastic snap-fitting manner of the mounting member 322 in the third mounting hole 3231 may refer to the above description of the elastic snap-fitting of the mounting member 322 in the second mounting hole 3211, which will not be repeated here.

[0195] The structure of the power arm 3 is further described below by taking the example of the mounting member 322 being screwed into the third mounting hole 3231 .

[0196] See also Fig. 9As shown, the connector 323 may include but is not limited to a rectangular block. For example, the connector 323 may also be a pentagonal or other non-circular block structure. In the present application, the shape of the connector 323 is not particularly limited. Since the third mounting hole 3231 is a threaded hole, the connector 323 may also be called a threaded block. For example, the connector 323 may be a steel or other metal threaded block with high strength, so that the connector 323 has high strength, so as to avoid damage to the third mounting hole 3231 of the connector 323 after the mounting member 322 is disassembled multiple times, and ensure the stability of the connection between the mounting member 322 and the connector 323.

[0197] See also Fig. 9 As shown, the placement cavity 3212 may be a groove body adapted to the shape of the connecting member 323. For example, when the connecting member 323 is a rectangular block, the placement cavity 3212 may be a rectangular groove having the same shape as the connecting member 323. In this way, while the connecting member 323 is fixed in the accommodation cavity, the connecting member 323 can be restricted from rotating relative to the reinforcing member 321 through the accommodation cavity, so as to ensure the accurate connection between the mounting member 322 and the connecting member 323.

[0198] The placement cavity 3212 may be located on the axial end face of the reinforcement member 321 on the tube body 31. When the mounting member 322 is connected to the connecting member 323 and connected to the wing 2, a pulling force is generated on the connecting member 323. At this time, the connecting member 323 may abut against the inner wall of the placement cavity 3212 facing the wing 2 under the pulling force to ensure that the connecting member 323 can be stably assembled in the placement cavity 3212. In some embodiments, in order to prevent the connecting member 323 from falling out of the placement cavity 3212, the connecting member 323 may be fixed in the placement cavity 3212 by bonding, screws, bolts, etc.

[0199] The communication channel 3213 can be understood as a through hole in the reinforcement 321. The communication channel 3213 is located at a position where the outer wall of the reinforcement 321 is opposite to the first mounting hole 311 and the third mounting hole 3231, and communicates with the placement cavity 3212 and the outer wall of the reinforcement 321. In this way, it can be ensured that the mounting member 322 can be inserted into the first mounting hole 311, the communication channel 3213 and the third mounting hole 3231, so as to be connected to the connecting member 323 via the communication channel 3213, so as to realize the installation and fixation of the mounting member 322 in the reinforcement 321.

[0200] It should be noted that, in some embodiments, the connecting member 323 may also be embedded in the communicating channel 3213, and in this case, there is no need to provide an accommodating cavity in the reinforcing member 321. The connecting member 323 may be a connecting structure having a third mounting hole 3231 (threaded hole) inside. For example, the connecting member 323 may be a wire screw sleeve.

[0201] The structure of the power arm 3 is further described below by taking the example that the connecting member 323 is embedded in the placement cavity 3212 and the mounting member 322 is screwed into the third mounting hole 3231 .

[0202] See also Fig. 9 As shown, the reinforcement member 321 has threading holes 3214 that pass through both ends of the tube body 31 in the axial direction, so that the power transmission line in the power arm 3 can be passed through the threading holes 3214 to realize the passing of the power transmission line in the power arm 3.

[0203] Among them, the threading hole 3214 can be located on the side of the first slot body away from the wing 2, so as to ensure that the power transmission line can be passed through the threading hole 3214 while making the threading hole 3214 away from the wing 2, so as to facilitate the setting of the connecting channel 3213 and the placement cavity 3212 in the reinforcement 321.

[0204] See also Fig. 9 As shown, the reinforcement member 321 may also have a weight-reducing hole 3215. The weight-reducing hole 3215 is located on the side of the threading hole 3214 to reduce the weight of the reinforcement member 321 and the weight of the power arm 3.

[0205] See also Figure 7 Combined with Figure 4 As shown, the first adapter 33 has a first through hole 331 at a position corresponding to the mounting member 322. The mounting member 322 is provided through the first mounting hole 311 and the first through hole 331 to connect the first adapter 33 and the reinforcement member 321, so that the mounting member 322 is connected to the first adapter 33, and the first adapter 33 can be connected to the reinforcement member 321 through the mounting member 322, so that the load applied by the wing 2 on the power arm 3 can be transmitted to the tube body 31 through the first adapter 33, the mounting member 322 and the reinforcement member 321, and the reinforcement member 321 can concentrate on bearing the load applied by the wing 2 on the tube body 31.

[0206] Furthermore, the load applied to the tube body 31 by the motor 371 during operation can be transferred to the reinforcement member 321 through the tube body 31 , so that the reinforcement member 321 can also share the load applied to the tube body 31 by the power arm 3 .

[0207] See also Figure 7 Combined with Figure 4 As shown, in some embodiments, the adapter assembly may further include a second adapter 34. The second adapter 34 is configured to be disposed in the wing 2 and mounted on the wing 2. The second adapter 34 and the first adapter 33 are connected to each other so that the first adapter 33 can be installed on the wing 2 through the second adapter 34.

[0208] The second adapter 34 can be detachably connected to the wing 2 to facilitate the disassembly of the power arm 3. For example, the second adapter 34 can be detachably connected to the spar 23 of the wing 2 by means of a clamp, screws, bolts, etc.

[0209] Of course, the second adapter 34 can also be fixedly connected to the spar 23 of the wing 2 by welding or the like. In this case, the first adapter 33 can be detachably connected to the second adapter 34, which can also facilitate the disassembly of the power arm 3. In the present application, the connection method between the second adapter 34 and the wing 2 is not particularly limited.

[0210] The structure of the power arm 3 is further described below by taking the detachable connection between the second adapter 34 and the wing 2 as an example.

[0211] See also Figure 7 Combined with Figure 4 As shown, the first adapter 33 and the second adapter 34 can be connected via the mounting member 322, so that while the mounting member 322 connects the first adapter 33 and the reinforcement 321, the second adapter 34 and the first adapter 33 can also be connected to each other through the mounting member 322, so as to simplify the assembly of the power arm 3 and the wing 2.

[0212] The second adapter 34 has a second through hole 341 at a position corresponding to the mounting member 322. The mounting member 322 is inserted through the second through hole 341 and the first through hole 331 to connect the first adapter 33 and the second adapter 34, thereby realizing the connection among the first adapter 33, the second adapter 34 and the reinforcement member 321 through the mounting member 322.

[0213] When the power arm 3 is mounted on the wing 2, the mounting member 322 can be directly inserted into the second through hole 341, the first through hole 331, and the first mounting hole 311, and the mounting member 322 can be connected to the reinforcement member 321, so that the power arm 3 can be hoisted below the lower skin 22 of the wing 2 (see Figure 7 shown).

[0214] The first through hole 331 and the second through hole 341 may be threaded holes or non-threaded holes. To improve the installation efficiency of the power arm 3 on the wing 2, the first through hole 331 and the second through hole 341 may be non-threaded holes. Alternatively, in some embodiments, the first through hole 331 and the second through hole 341 may also be threaded holes. In the present application, the structures of the first through hole 331 and the second through hole 341 are not particularly limited.

[0215] See also Figure 7As shown, the first through hole 331 and the second through hole 341 can be coaxially arranged. The axis of the first through hole 331 can be perpendicular to the axis of the tube body 31, so that the mounting member 322 can be sequentially inserted into the second through hole 341 and the first through hole 331 from top to bottom, and installed on the reinforcement member 321, thereby realizing the connection between the first adapter 33, the second adapter 34 and the reinforcement member 321.

[0216] See also Figure 7 As shown, the upper skin 21 of the wing 2 has an openable cover 211, and the cover 211 is arranged corresponding to the mounting member 322, so that after the cover 211 is opened, the mounting member 322 can be inserted into the second through hole 341 and the first through hole 33 from top to bottom in sequence to achieve the connection among the first adapter 33, the second adapter 34 and the reinforcement 321.

[0217] The cover 211 can also be overlapped on the upper skin 21, and can be detachably connected to the upper skin 21 by means of clamping, screws, bolts, etc. When the cover 211 needs to be opened, the cover 211 can be removed from the upper skin 21. Alternatively, the cover 211 can be rotatably connected to the upper skin 21, so that the cover 211 can be opened by rotation. In the present application, the connection method between the cover 211 and the upper skin 21 is not particularly limited.

[0218] The lower skin 22 has a first opening (not shown) at a position corresponding to the mounting member 322 , so that the mounting member 322 inserted into the second adapter 34 can pass through the first opening and be inserted into the first through hole 331 of the first adapter 33 .

[0219] There can be more than two mounting members 322, and the more than two mounting members 322 can be symmetrically distributed around the reinforcing member 321. The first adapter 33 is provided with first through holes 331 at positions corresponding to the mounting members 322. The second adapter 34 is provided with second through holes 341 at positions corresponding to the mounting members 322. The tube body 31 is provided with first mounting holes 311 at positions corresponding to the mounting members 322. The reinforcing member 321 is provided with connecting members 323 at positions corresponding to the mounting members 322. In this way, by providing more than two mounting members 322, the stability of the connection among the first adapter 33, the second adapter 34 and the reinforcing member 321 can be enhanced.

[0220] See also Figure 7As shown, the tube body 31 may also have a fourth mounting hole 312. The first adapter 33 has a fifth mounting hole 332. The reinforcement 321 has a sixth mounting hole 3216. The adapter assembly also includes a fastener (not shown). The fastener may include a screw, a bolt, etc. The fastener may be inserted into the fifth mounting hole 332, the fourth mounting hole 312, and the sixth mounting hole 3216, and be detachably connected to the reinforcement 321, so that the first adapter 33 can be further fixed to the reinforcement 321 by the fastener to enhance the connection effect between the first adapter 33 and the reinforcement 321. When assembled with the wing 2, the first adapter 33 can be pre-fixed to the reinforcement 321 by the fastener, which can improve the installation efficiency of the power arm 3 on the wing 2.

[0221] Fig.10 The fuse 35 is schematically shown in Figure 4 See the installation diagram in Fig.10 As shown, when the mounting member 322 and the reinforcing member 321 are threadedly connected, the mounting member 322 also has a first limiting hole 3222. The second adapter 34 has a second limiting hole 342. The adapter assembly also includes a fuse 35. The fuse 35 is inserted into the first limiting hole 3222 and the second limiting hole 342. The second adapter 34 limits the rotation of the mounting member 322 relative to the second adapter 34 through the fuse 35, so that the rotation of the mounting member 322 can be limited by the fuse 35 to prevent the mounting member 322 from loosening.

[0222] It should be noted that Fig.10 The positions of the first limiting hole 3222 and the second limiting hole 342 are only schematically shown, and do not constitute a limitation on the positions of the first limiting hole 3222 and the second limiting hole 342.

[0223] See also Fig.10 As shown, the second adapter 34 also has a lifting hole 343, and a lifting head (not shown) of a lifting device can be assembled and fixed in the lifting hole 343, so as to lift the wing assembly for the convenience of maintenance of the power arm 3. For example, the lifting hole 343 can be a threaded hole, and the lifting head can be screwed and fixed in the lifting hole 343. It should be noted that when the cover 211 on the upper skin 21 is opened, the lifting head can be extended into the lifting hole 343, so as to be fixed in the lifting hole 343.

[0224] Fig.11 Another schematic diagram of the connection between the power arm 3 and the wing 2 is shown schematically. Fig.11 Only the spar 23 of the wing 2 is shown. Fig.11As shown, in some embodiments, the adapter assembly may not need to be provided with the second adapter 34. In this case, the first adapter 33 can be detachably installed with the spar 23 in the wing 2, and the reinforcement 321 can also be detachably installed on the wing 2.

[0225] Fig.12 Shows Fig.11 Enlarged view of the middle D. Fig.12 As shown, the first adapter 33 has an extension portion 333. The extension portion 333 is used to extend into the wing 2 and be detachably connected to the wing 2, so as to realize the connection between the first adapter 33 and the wing 2 while reducing the number of parts of the power arm, so as to further improve the installation efficiency of the power arm 3 on the wing 2. The extension portion 333 can be detachably connected to the wing 2 by means of clamping, screws or bolts. In the present application, the connection method of the extension portion 333 and the wing 2 is not particularly limited.

[0226] The number of the extension parts 333 may include but is not limited to two. By connecting the two extension parts 333 to the wing 2, the stability of the connection between the first adapter 33 and the wing 2 can be enhanced. For example, there may be one extension part 333. In the present application, the number of the extension parts 333 is not particularly limited.

[0227] Fig.13 Schematically shows Fig.11 Schematic diagram of the connection between the power arm 3 and the wing 2. Fig.13 The upper skin 21 and the lower skin 22 of the wing 2 are shown, and the spar 23 and the connecting member 323 are not shown. As described above, see Fig.13 As shown, the connecting member 323 may be located in the connecting channel 3213 of the reinforcing member 321 .

[0228] See also Fig.13 As shown, the lower skin 22 of the wing 2 has a seventh mounting hole at a position corresponding to the extension portion 333 , so that the extension portion 333 can be inserted into the seventh mounting hole to achieve connection with the wing 2 .

[0229] See also Fig.13 As shown, the axis of the first through hole 331 is tilted relative to the axis of the tube body 31 to prevent the installation member 322 from interfering with the extension portion 333 when the installation member 322 is inserted into the first through hole 331, thereby affecting the installation member 322 from being inserted into the first through hole 331. At this time, the first through hole 331 on the first adapter 33 is coaxially arranged with the first mounting hole 311, so that the installation member 322 can be inserted into the first through hole 331 and the first mounting hole 311 and fixed in the reinforcement member 321.

[0230] The structure of the power arm 3 is further described below by taking the example that the adapter assembly includes the first adapter 33 and the second adapter 34 at the same time.

[0231] The power arm 3 is provided with a corresponding adapter assembly at each reinforcement assembly 32 so that the mounting member 322 of the reinforcement assembly 32 can be detachably connected to the front spar 232 or the rear spar 233 of the wing 2 through the corresponding adapter assembly.

[0232] See also Fig.13 As shown, the power arm 3 further includes a fairing 36. The fairing 36 may include a first fairing 361 and a second fairing 362. In some embodiments, the fairing 36 may further include a third fairing 363. The second fairing 362 and the third fairing 363 will be further described below.

[0233] The first fairing 361 is fixed to the outer wall of the tube body 31 and is configured to abut against the wing 2 to achieve assembly of the first fairing 361 between the tube body 31 and the wing 2 .

[0234] The first adapter 33 is at least partially located outside the first fairing 361. In this way, while ensuring the connection between the first adapter 33 and the wing 2, the first fairing 361 can realize aerodynamic rectification between the connection area of ​​the tube 31 and the wing 2, and the first adapter 33 can be prevented from being exposed on the surface of the aircraft 100, thereby minimizing the impact on the appearance of the power arm 3.

[0235] It should be noted that the connection area between the tube body 31 and the wing 2 can be understood as the area of ​​the tube body 31 where the adapter assembly is provided. The connection between the tube body 31 and the wing 2 is located in the connection area.

[0236] When the tube body 31 is a round tube, part of the first adapter 33 can be located outside the first fairing 361 so that when it is connected to the wing 2, the first fairing 361 can shield the outside of the first adapter 33 to prevent the first adapter 33 from being exposed on the surface of the aircraft 100, so that the first fairing 361 can realize aerodynamic straightening between the connection area of ​​the tube body 31 and the wing 2.

[0237] When the tube body 31 is a rectangular tube and there is a small gap between the tube body 31 and the wing 2, the first adapter 33 can be completely located outside the first fairing 361. For example, when the first adapter 33 can be located inside the wing 2, it is also possible to avoid the first adapter 33 being exposed on the surface of the aircraft 100, so that the aerodynamic fairing between the connection area of ​​the tube body 31 and the wing 2 can be achieved through the first fairing 361.

[0238] Since the reinforcement member 321 in the tube body 31 is connected to the wing 2 via the first adapter 33 , the first fairing 361 can also be a non-load-bearing component, which can reduce the weight of the first fairing 361 to the maximum extent.

[0239] The first fairing 361 can be bonded to the outer wall of the tube body 31 to fix the first fairing 361 on the outer wall of the tube body 31. For example, the first fairing 361 can also be fixed on the outer wall of the tube body 31 by screws, bolts, etc.

[0240] The first fairing 361 may be a streamlined cover to achieve the function of aerodynamic fairing. The first fairing 361 may be bonded to the outer wall of the tube body 31 by structural adhesive. The first fairing 361 may be pre-bonded to the outer wall of the tube body 31 to improve the installation efficiency of the power arm 3 on the wing 2.

[0241] In some embodiments, the first fairing 361 can be abutted against the lower skin 22 of the wing 2 by foam glue, so as to achieve the abutment between the first fairing 361 and the wing 2 and enhance the fixing effect of the first fairing 361 between the tube body 31 and the wing 2.

[0242] In other embodiments, a sealing strip may be provided between the first fairing 361 and the lower skin 22 of the wing 2. When the tube body 31 is suspended below the lower skin 22 through the mounting member 322, the first fairing 361 may be pressed onto the sealing strip and abutted against the lower skin 22 of the wing 2 through the sealing strip. In this way, the tube body 31 may also abut against the first fairing 361 and the wing 2.

[0243] See also Fig.13 As shown, when the adapter assembly does not include the second adapter 34, the first fairing 361 may be provided with a second opening 3611. The second opening 3611 may be understood as a through hole on the first fairing 361. The second opening 3611 may be provided corresponding to the mounting member 322, so that the mounting member 322 may be disassembled and assembled at the second opening 3611.

[0244] Fig.14 A schematic structural diagram of a power arm 3 is shown schematically. Fig.15 Shows Fig.14 Enlarged view of part E in the middle. Fig.14 and Fig.15 As shown, in order to prevent the existence of the first fairing 361 from affecting the arrangement of the first adapter 33 on the tube body 31, a third opening 3612 may be provided on the first fairing 361. The first adapter 33 of each adapter assembly is located in the third opening 3612, so that the first adapter 33 can be exposed outside the first fairing 361, and the detachable connection with the spar 23 of the wing 2 can be achieved, and the convenience of installing the power arm 3 and the wing 2 can be enhanced.

[0245] By providing at least the third opening 3612 (which may also include the second opening 3611 ), the weight of the first fairing 361 can be further reduced.

[0246] For example, the third opening 3612 may be a strip-shaped opening, so that the first adapter 33 of each adapter assembly can be located in the third opening 3612 .

[0247] When the tubular body 31 is a split structure, the first fairing 361 may also be a split structure, in which case a portion of the first fairing 361 may be disposed on one tubular structure in the tubular body 31, and another portion of the first fairing 361 may be disposed on another tubular structure in the tubular body 31. When the tubular structures are bonded to each other, the first fairings 361 on the tubular structures are also connected to each other to form a complete first fairing 361.

[0248] Fig.16 Schematically shows Figure 3 Enlarged view of the middle F part. Fig.16 As shown, the power arm body also includes the power device 37 described above. The power device 37 includes a motor 371 and an electronic speed regulator 372. The structures of the motor 371 and the electronic speed regulator 372 can be referred to the relevant description above, and will not be repeated here.

[0249] See also Fig.16 As shown, the power arm body also includes a mounting assembly 38. The mounting assembly 38 includes a mounting seat 381. The motor 371 and the electronic speed regulator 372 are both fixed on the mounting seat 381, and the mounting seat 381 is detachably connected to the end of the tube body 31. By setting the mounting seat 381, while the motor 371 and the electronic speed regulator 372 are fixed at the end of the tube body 31, the number of mounting seats 381 in the power arm 3 can be reduced to simplify the structure of the power arm 3. In addition, the load of the motor 371 can be transmitted to the tube body 31 of the power arm 3 through the mounting seat 381, so that the tube body 31 shares the load of the motor 371, so as to ensure the stability of the structure of the power arm 3.

[0250] The motor 371 and the electronic speed regulator 372 can be fixed on the mounting base 381 by means of clamping, screws, bolts, etc.

[0251] The tube body 31 has two ends, and each end of the tube body 31 is provided with a power device 37. The structure of the power arm 3 is further described below by taking one end of the tube body 31 as an example.

[0252] Fig.17 Shows Figure 8 Enlarged view of section G in the middle. Fig.17 Combined with Fig.16As shown, along the axial direction of the tube body 31, the mounting seat 381 has a first end and a second end. The first end is located inside the tube body 31 and is detachably connected to the tube body 31. The second end is located outside the tube body 31, and the motor 371 is fixed to the second end, so that the motor 371 can be fixed and exposed outside the tube body 31 and connected to the propeller 4. In addition, since the first end is located inside the tube body 31, the size of the mounting seat 381 extending out of the tube body 31 can be reduced to avoid the tube body 31 from being twisted under the action of the mounting seat 381, the motor 371 and the electronic speed regulator 372, thereby enhancing the stability of the motor 371 and the electronic speed regulator 372 installed on the tube body 31.

[0253] A closed cavity can be formed between the first end of the mounting seat 381 and the tube body 31. Due to the setting of the closed cavity, the end of the tube body 31 forms a closed port. Compared with the structure in which the end of the tube body 31 is open, the setting of the closed cavity can enhance the bending and torsion resistance of the end of the tube body 31, so as to ensure that the load of the motor 371 can be more efficiently transmitted to the tube body 31, so that the power arm 3 has a higher force transmission efficiency.

[0254] Fig.18 The internal partial schematic diagram of the power arm 3 in the mounting seat 381 is schematically shown. Fig.18 It is a structure with the tube body 31 at one end.

[0255] See also Fig.17 and Fig.18 As shown, the mounting assembly 38 further includes two support members 382. Along the axial direction of the tube body 31, the two support members 382 are fixed on the mounting seat 381 at intervals. The support members 382 are connected to the inner wall of the tube body 31 and abut against the inner wall of the tube body 31. The support members 382, ​​the mounting seat 381 and part of the tube wall of the tube body 31 together form a cavity, so that a closed cavity is formed between the first end and the tube body 31, and the mounting seat 381 can be supported and fixed inside the tube body 31 by the support members 382, ​​so as to enhance the fixing effect of the mounting seat 381 on the end of the tube body 31.

[0256] Furthermore, since the support member 382 abuts against the inner wall of the tube body 31 , the support member 382 can also support the inner wall of the tube body 31 to enhance the stability of the end structure of the tube body 31 and enhance the fixing effect of the power device 37 at the end of the tube body 31 .

[0257] One of the two support members 382 is installed at the end surface of the first end, and the support member 382 can be called a rear support member 382. The other of the two support members 382 is installed at the middle of the mounting seat 381, and the support member 382 can be called a front support member 382.

[0258] The front support member 382 can be used to support and fix the middle part of the mounting seat 381 inside the tube body 31, and can support part of the cavity inside the tube body 31. The rear support member 382 can be used to support and fix the first end of the mounting seat 381 inside the tube body 31, and can support the entire cavity inside the tube body 31.

[0259] The side edge shape of the support member 382 is adapted to the shape formed by the inner wall of the tube body 31 (the shape of the inner cavity of the tube body 31), so that the side edge shape of the support member 382 is adapted to the shape of the inner cavity of the tube body 31, so as to enhance the supporting effect of the support member 382 on the cavity of the tube body 31. For example, when the shape of the cavity of the tube body 31 is circular, the side edge shape of the front support member 382 can be semicircular, and the side edge shape of the rear support member 382 can be circular, so that the front support member 382 supports part of the cavity inside the tube body 31, and the rear support member 382 supports the entire cavity inside the tube body 31.

[0260] The support member 382 can be fixed to the mounting seat 381 by means of bolts, bolts, etc., so as to facilitate the disassembly of the support member 382. Alternatively, the two support members 382 can also be formed integrally on the mounting seat 381, so that the two support members 382 and the mounting seat 381 can form an integral structure to reduce the connection between the support member 382 and the mounting seat 381, which can improve the installation efficiency of the power device 37 on the tube body 31. The support member 382 can be connected to the tube body 31 by means of screws, bolts or blind rivets. In the present application, the connection method of the support member 382 with the mounting seat 381 and the tube body 31 is not particularly limited.

[0261] It should be noted that, in order to facilitate the installation of the power transmission line in the tube body 31, at least part of the support member 382 may be provided with a through hole for the power transmission line to pass through. For example, the rear support member 382 may be provided with a through hole.

[0262] The support member 382 may be a metal support plate. For example, the material of the metal support plate may be an aluminum alloy or the like. Alternatively, the support member 382 may also be a plastic plate. In the present application, the material of the support member 382 is not particularly limited.

[0263] See also Fig.18 As shown, along the direction intersecting with the axial direction of the tube body 31, the mounting seat 381 has a first mounting surface 3811 and a second mounting surface 3812. The direction intersecting with the axial direction of the tube body 31 can be understood as the thickness direction of the mounting seat 381. Fig.18 Combined with Fig.16As shown, the first mounting surface 3811 faces the propeller 4. The motor 371 is mounted on the first mounting surface 3811 so that the motor 371 is connected to the propeller 4. The electronic speed regulator 372 and the motor 371 are located on the same side or different sides of the mounting seat 381, so that while the electronic speed regulator 372 is installed on the mounting seat 381, the installation position of the electronic speed regulator 372 on the mounting seat 381 can be more diversified, so as to meet the installation requirements of different power arms 3 for the electronic speed regulator 372.

[0264] See also Fig.17 Combined with Fig.16 As shown, the end of the tube body 31 has a mounting notch 313 at a position corresponding to the electronic speed regulator 372 in the circumferential direction. The electronic speed regulator 372 is located at the mounting notch 313, so that the electronic speed regulator 372 is avoided through the mounting notch 313, ensuring that the electronic speed regulator 372 is installed at the end of the tube body 31. In addition, due to the setting of the mounting notch 313, while not affecting the formation of a cavity between the first end of the mounting seat 381 and the tube body 31, it is also possible to prevent the mounting seat 381 from extending too far from the tube body 31, thereby affecting the stability of the mounting seat 381 installed on the tube body 31.

[0265] Compared with the motor 371 , the electronic speed regulator 372 has a larger size. When the electronic speed regulator 372 is located at the installation notch 313 , part of the structure of the electronic speed regulator 372 can be located at the installation notch 313 , and another part of the structure is located outside the tube body 31 .

[0266] See also Fig.16 As shown, when the electronic speed regulator 372 and the motor 371 are located on different sides of the mounting seat 381, the electronic speed regulator 372 can be located on the second mounting surface 3812 of the mounting seat 381, or the electronic speed regulator 372 can also be located on the side wall of the mounting seat 381. Since the size of the electronic speed regulator is larger than that of the motor 371, the second mounting surface 3812 of the mounting seat 381 has a larger area than the side wall of the mounting seat 381. Therefore, when the electronic speed regulator 372 is located on the second mounting surface 3812 of the mounting seat 381, it can facilitate the installation of the electronic speed regulator 372 on the mounting seat 381, and enhance the fixing effect of the electronic speed regulator 372 on the mounting seat 381.

[0267] When the electronic speed regulator 372 is located on the second mounting surface 3812 of the mounting seat 381, the mounting notch 313 can be located at a position where the tube body 31 is opposite to the second mounting surface 3812 of the mounting seat 381. When the electronic speed regulator 372 is located on the side wall of the mounting seat 381, the mounting notch 313 can be located at a position where the tube body 31 is opposite to the side wall of the mounting seat 381.

[0268] When the electronic speed regulator 372 and the motor 371 are located on different sides of the mounting seat 381, the front support member 382 can be located on the first mounting surface 3811 of the mounting seat 381. In this way, when the electronic speed regulator 372 can be located on the second mounting surface 3812 of the mounting seat 381, the front support member 382, ​​the rear support member 382, ​​the mounting seat 381, and part of the tube wall of the tube body 31 can jointly form a cavity. When the front support member 382 can be located on the side wall of the mounting seat 381, the front support member 382, ​​the rear support member 382, ​​the mounting seat 381, part of the tube wall of the tube body 31, and the electronic speed regulator 372 can jointly form a cavity.

[0269] When the electronic speed regulator 372 and the motor 371 are located on the same side of the mounting seat 381, the electronic speed regulator 372 can be located on the first mounting surface 3811 of the mounting seat 381. At this time, the electronic speed regulator 372 can be located in the middle of the mounting seat 381 and between the front support member 382 and the motor 371. In this way, the front support member 382, ​​the rear support member 382, ​​the mounting seat 381 and part of the tube wall of the tube body 31 can still together form a cavity.

[0270] When the electronic speed regulator 372 is located on the first mounting surface 3811 of the mounting seat 381 , the mounting notch 313 may be located at a position where the tube body 31 is opposite to the first mounting surface 3811 of the mounting seat 381 .

[0271] The structure of the power arm 3 is further described below by taking the electronic speed regulator 372 located on the second mounting surface 3812 of the mounting seat 381 as an example.

[0272] See also Fig.16 As shown, the rotation axis of the motor 371 can be perpendicular to the axis of the tube body 31. The rotation axis of the motor 371 is perpendicular to the first mounting surface 3811 of the mounting seat 381, and at this time, the first mounting surface 3811 is parallel to the axis of the tube body 31. Alternatively, in other embodiments, the rotation axis of the motor 371 can also be tilted relative to the axis of the tube body 31, and at this time, the first mounting surface 3811 is also tilted relative to the axis of the tube body 31. In the present application, the angle between the rotation axis of the motor 371 and the axis of the tube body 31 is not particularly limited. This can make the arrangement of the motor 371 at the end of the tube body 31 more diverse.

[0273] It should be noted that when the rotation axis of the motor 371 can be tilted relative to the axis of the tube 31, it is also helpful to enhance the heading control capability of the aircraft 100 and improve the heading accuracy. For example, when the rotation axis of the motor 371 can be tilted relative to the axis of the tube 31, the two motors 371 of the two power arms 3 of the aircraft 100 at the same end of the tube 31 can be symmetrically arranged relative to the fuselage 1. In this way, the heading control capability of the aircraft 100 can be enhanced and the heading accuracy can be improved.

[0274] See also Fig.16 and Fig.17 As shown, the power arm body also includes a fairing assembly (not shown). The fairing assembly includes a second fairing 362 in the fairing 36. The second fairing 362 is arranged outside the motor 371 and connected to the outer wall of the tube body 31, so that the second fairing 362 can be installed and fixed on the tube body 31, and the airflow flowing through the motor 371 and between the motor 371 and the tube body 31 can be rectified by the second fairing 362, so as to realize pneumatic rectification of the power arm 3 at the motor 371.

[0275] The second fairing 362 may be a streamlined structure so as to achieve pneumatic fairing of the power arm 3 at the motor 371 .

[0276] The second fairing 362 can be connected to the outer wall of the tube body 31 by screws, bolts, etc. and fixed to the outer wall of the tube body 31. Alternatively, when the tube body 31 is a split structure, the second fairing 362 can also be integrally formed on the tubular structure of the tube body 31.

[0277] See also Fig.16 As shown, the second fairing 362 has a avoidance opening 3621, and at least part of the motor 371 is exposed to the outside of the second fairing 362 through the avoidance opening 3621, so as to facilitate the connection between the motor 371 and the propeller 4. Among them, the rotating shaft of the motor 371 can be connected to the propeller 4. At this time, the rotating shaft of the motor 371 can be exposed to the outside of the second fairing 362 through the avoidance opening 3621, or one end of the motor 371 with the rotating shaft can also be exposed to the outside of the second fairing 362 as a whole through the avoidance opening 3621.

[0278] See also Fig.16 As shown, when the electronic speed regulator 372 is located on the second mounting surface 3812 of the mounting seat 381, the fairing assembly may further include a third fairing 363. The third fairing 363 may be arranged outside the electronic speed regulator 372 and connected to the outer wall of the tube body 31. The third fairing 363 is detachably connected to the second fairing 362, so that the third fairing 363 can be installed and fixed on the tube body 31, and the airflow passing through the electronic speed regulator 372 and between the electronic speed regulator 372 and the tube body 31 can be rectified by the third fairing 363, so as to realize the pneumatic rectification of the power arm 3 at the electronic speed regulator 372.

[0279] Furthermore, the third fairing 363 and the second fairing 362 are detachably connected, which facilitates the installation of the third fairing 363 and the second fairing 362 on the motor 371 or the electronic speed regulator 372, and also facilitates the installation and disassembly of the motor 371 or the electronic speed regulator 372. For example, after the motor 371 and the electronic speed regulator 372 are installed on the end of the tube body 31 through the mounting seat 381, the second fairing 362 and the third fairing 363 are respectively installed on the motor 371 or the electronic speed regulator 372, and the second fairing 362 and the third fairing 363 are respectively connected to the tube body 31.

[0280] The third fairing 363 may be a streamlined structure to achieve pneumatic fairing of the power arm 3 at the electronic speed regulator 372. The third fairing 363 may also be connected to the outer wall of the tube body 31 by screws, bolts, etc., and fixed to the outer wall of the tube body 31.

[0281] See also Fig.16 As shown, the third fairing 363 and the second fairing 362 have an overlapping area, so that the third fairing 363 and the second fairing 362 are detachably connected in the overlapping area. The overlapping area can be understood as the overlapping edge (not shown) of the third fairing 363 and the second fairing 362. For example, the third fairing 363 and the second fairing 362 can be connected in the overlapping area by screws, bolts, etc.

[0282] The third fairing 363 has a heat dissipation port (not shown) to facilitate heat dissipation of the electronic speed regulator 372. Specifically, the electronic speed regulator 372 has a heat dissipation fin 3721, so that the heat of the electronic speed regulator 372 can be dissipated through the heat dissipation fin 3721. The heat dissipation port is arranged opposite to the heat dissipation fin 3721, so that the heat on the heat dissipation fin 3721 can be dissipated to the outside of the power arm 3 through the heat dissipation port, so as to improve the heat dissipation efficiency of the electronic speed regulator 372.

[0283] The third fairing 363 has a heat dissipation grille 3631 inside, which is located at the heat dissipation port to ensure that the heat on the heat dissipation fins 3721 can be dissipated to the outside of the power arm 3 through the heat dissipation port. At the same time, the heat dissipation grille 3631 can shield and modify the heat dissipation port to reduce the impact of the opening of the heat dissipation port on the aerodynamic rectification effect of the third fairing 363.

[0284] See also Fig.16 and Fig.17As shown, the fairing assembly may further include a fairing support frame 39. The fairing support frame 39 is located between the third fairing 363 and the second fairing 362, and is supported on the inner walls of the third fairing 363 and the second fairing 362, so that the end of the third fairing 363 and the second fairing 362 away from the tube body 31 can be supported by the fairing support frame 39, so as to enhance the stability of the third fairing 363 and the second fairing 362 being assembled on the tube body 31.

[0285] The rectifying support frame 39 is mounted on one end of the mounting seat 381 away from the tube body 31, so that the rectifying support frame 39 can be fixed to the end of the tube body 31 through the mounting seat 381. For example, the rectifying support frame 39 can be connected to the mounting seat 381 by clamping, bolts, screws, etc., so as to realize the installation of the rectifying support frame 39 on the mounting seat 381.

[0286] It should be noted that when the electronic speed regulator 372 is located on the side wall of the mounting seat 381 or the first mounting surface 3811, the third fairing 363 may not be provided outside the electronic speed regulator 372. In this case, other methods may be adopted to achieve the pneumatic rectification effect of the power arm 3 at the electronic speed regulator 372. For example, the pneumatic rectification effect of the power arm 3 at the electronic speed regulator 372 may be achieved by changing the shape of the heat dissipation fins 3721. In the present application, the shape of the heat dissipation fins 3721 will not be further described.

[0287] When the tube body 31 is an integrated structure, since the first fairing 361, the second fairing 362, etc. in the power arm 3 can be processed as a separate structural part, when the tube body 31 is an integrated structure, the mold cost of the tube body 31 during manufacturing can also be reduced, and the manufacturing cost of the power arm 3 can be reduced.

[0288] It should be noted that when the power arm 3 of the present application is assembled on both sides of the fuselage 1, except that the structure of the installation notch 313 of the tube body 31 is different, which makes it impossible to use the tube body 31 on both sides of the fuselage 1, the remaining parts in the power arm 3 can be used on both sides of the fuselage 1, which can reduce the number of molds used in the manufacturing process of the power arm 3, so as to further reduce the manufacturing cost of the power arm 3.

[0289] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0290] In the description of the present application, it should be understood that the terms "include" and "have" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, display structure, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0291] The term "and / or" used in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0292] Unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected or indirectly connected through an intermediate medium, which can enable the internal connectivity of two elements or the interaction relationship between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0293] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A power arm, characterized in that: include: The power arm body includes a tube body; An adapter assembly, comprising a first adapter, the first adapter being disposed outside the tube body and configured to be mounted on a wing; The reinforcement assembly comprises a reinforcement member and a mounting member, wherein the reinforcement member is located in the tube body and supported on the inner wall of the tube body; and the mounting member is mounted on the reinforcement member and the first adapter member.

2. The power arm according to claim 1, characterized in that: The mounting member has a first end and a second end, the first end is mounted on the reinforcing member, and the second end is exposed outside the tube body and mounted on the first adapter.

3. The power arm according to claim 2, characterized in that: The tube body has a first mounting hole that passes through both sides of the tube body, the first end portion is mounted on a side of the interior of the reinforcement member facing the first adapter, and the second end portion extends to the outside of the tube body through the first mounting hole.

4. The power arm according to claim 2, characterized in that: The mounting member is detachably mounted on the reinforcement member.

5. The power arm according to claim 4, characterized in that: The reinforcement member has a second mounting hole, and the mounting member extends into the second mounting hole and is connected to the second mounting hole.

6. The power arm according to claim 5, characterized in that: The second mounting hole is a threaded hole, and the mounting member is screwed into the second mounting hole.

7. The power arm according to claim 4, characterized in that: The reinforcement assembly further includes a connecting member, the connecting member is fixed to the reinforcement member, and the mounting member is connected to the connecting member.

8. The power arm according to claim 7, characterized in that: The connecting member has a third mounting hole, and the mounting member extends into the third mounting hole and is connected to the third mounting hole.

9. The power arm according to claim 8, characterized in that: The reinforcement member has a placement cavity and a communication channel, and the communication channel connects the placement cavity and the outer wall of the reinforcement member; The connecting piece is embedded in the placement cavity, and the mounting piece is connected to the connecting piece via the communicating channel.

10. The power arm according to claim 8, characterized in that: The third mounting hole is a threaded hole, and the mounting member is screwed into the third mounting hole.

11. The power arm according to any one of claims 1 to 10, characterized in that: The first adapter has a first through hole at a position corresponding to the mounting member; The mounting member is inserted into the first through hole to connect the first adapter and the reinforcement member.

12. The power arm according to claim 11, characterized in that: The adapter assembly also includes a second adapter, which is configured to be disposed in the wing and mounted on the wing; the second adapter and the first adapter are connected to each other.

13. The power arm according to claim 12, characterized in that: The first adapter and the second adapter are connected via the mounting member.

14. The power arm according to claim 13, characterized in that: The second adapter has a second through hole at a position corresponding to the mounting member; The mounting member is inserted into the second through hole and the first through hole to connect the first adapter member and the second adapter member.

15. The power arm according to claim 14, characterized in that: The first through hole and the second through hole are coaxially arranged, and the axis of the first through hole is perpendicular to the axis of the tube body.

16. The power arm according to claim 12, characterized in that: The second adapter is detachably connected to the wing.

17. The power arm according to claim 12, characterized in that: The tube body has a fourth mounting hole, the first adapter has a fifth mounting hole, and the reinforcement has a sixth mounting hole; The adapter assembly also includes a fastener, which is inserted into the fifth mounting hole, the fourth mounting hole and the sixth mounting hole and is detachably connected to the reinforcement.

18. The power arm according to claim 12, characterized in that: The mounting member and the reinforcement member are threadedly connected, and the mounting member has a first limiting hole, the second adapter has a second limiting hole, and the adapter assembly also includes a fuse, which is passed through the first limiting hole and the second limiting hole; the second adapter limits the rotation of the mounting member relative to the second adapter through the fuse.

19. The power arm according to claim 11, characterized in that: The first adapter has an extension portion, and the extension portion is used to extend into the wing and be detachably connected to the wing.

20. The power arm according to claim 19, characterized in that: The axis of the first through hole is inclined relative to the axis of the tube body.

21. The power arm according to any one of claims 1 to 10, characterized in that: Also included is a first fairing, which is fixed to the outer wall of the tube body and is configured to abut against the wing; At least a portion of the first adapter is located outside the first fairing.

22. The power arm according to claim 21, characterized in that: The first fairing is bonded to the outer wall of the tube.

23. The power arm according to any one of claims 1 to 10, characterized in that: The number of the adapter assemblies is more than two, and the more than two adapter assemblies are arranged outside the tube body at intervals along the axial direction of the tube body, and the reinforcing assembly is provided at a position in the tube body opposite to each of the adapter assemblies.

24. The power arm according to any one of claims 1 to 10, characterized in that: The power arm body also includes: The power device comprises a motor and an electronic speed regulator, wherein the motor is configured to be connected to a propeller and drive the propeller to rotate; the electronic speed regulator is electrically connected to the motor and configured to control the rotation speed of the motor; The mounting assembly comprises a mounting seat, the motor and the electronic speed regulator are both fixed on the mounting seat, and the mounting seat is detachably connected to the end of the tube body.

25. The power arm according to claim 24, characterized in that: In the axial direction of the tube body, the mounting seat has a first end and a second end, wherein the first end is located inside the tube body and is detachably connected to the tube body; The second end is located outside the tube body, and the motor is fixed to the second end.

26. The power arm according to claim 25, characterized in that: The mounting seat has a first mounting surface and a second mounting surface along a direction intersecting with the axial direction of the tube body, the first mounting surface faces the propeller, and the motor is mounted on the first mounting surface; The electronic speed regulator and the motor are located on the same side or different sides of the mounting base.

27. The power arm according to claim 26, characterized in that: The end of the tube body has a mounting notch at a position corresponding to the electronic speed regulator in the circumferential direction, and the electronic speed regulator is located at the mounting notch.

28. The power arm according to claim 27, characterized in that: The electronic speed regulator is located on the second mounting surface of the mounting base.

29. The power arm according to claim 25, characterized in that: A closed cavity is formed between the first end and the tube body.

30. The power arm according to claim 29, characterized in that: The mounting assembly further comprises two supporting members, which are fixed on the mounting seat at intervals along the axial direction of the tube body; The support members are all connected to the inner wall of the tube body and abut against the inner wall of the tube body; the support members, the mounting seat and a part of the tube wall of the tube body together surround the cavity.

31. The power arm according to claim 24, characterized in that: The rotation axis of the motor is perpendicular to the axis of the tube body, or the rotation axis of the motor is inclined relative to the axis of the tube body.

32. The power arm according to claim 24, characterized in that: The power arm body further includes a fairing assembly, the fairing assembly includes a second fairing, the second fairing is arranged outside the motor and connected to the outer wall of the tube body; The second fairing is provided with an escape opening, and at least a portion of the motor is exposed to the outside of the second fairing through the escape opening.

33. The power arm according to claim 32, characterized in that: The fairing assembly also includes a third fairing, which is arranged outside the electronic speed regulator and connected to the outer wall of the tube body; the third fairing is detachably connected to the second fairing.

34. The power arm according to claim 33, characterized in that: The fairing assembly further includes a fairing support frame, the fairing support frame is located between the third fairing and the second fairing, and is supported on the inner walls of the third fairing and the second fairing; The rectifying support frame is mounted on an end of the mounting seat away from the tube body.

35. The power arm according to claim 33, characterized in that: The third fairing has a heat dissipation port.

36. The power arm according to claim 35, characterized in that: The electronic speed regulator has a heat dissipation fin, and the heat dissipation port is arranged opposite to the heat dissipation fin; The third fairing has a heat dissipation grille inside, and the heat dissipation grille is located at the heat dissipation port.

37. The power arm according to any one of claims 1 to 10, characterized in that: The tube body is an integrally formed structure.

38. The power arm according to any one of claims 1 to 10, characterized in that: Along the axial direction of the tube, the inner diameters of the tube are equal; or, In the axial direction of the tube body, the inner diameter of the end portion of the tube body is larger than the inner diameter of the tube body where the reinforcement is installed.

39. The power arm according to claim 38, characterized in that: When the inner diameters of the tube bodies along the axial direction are equal, the wall thicknesses of the tube bodies along the axial direction are equal.

40. The power arm according to any one of claims 1 to 10, characterized in that: The tube body is a carbon fiber tube or a metal tube.

41. A wing assembly, characterized in that: It comprises a wing and a power arm as claimed in any one of claims 1 to 40, wherein a first adapter in the power arm is mounted on the wing.

42. The wing assembly according to claim 41, characterized in that The wing comprises a wing frame, an upper skin and a lower skin, wherein the upper skin and the lower skin cover both sides of the wing frame in the thickness direction; the wing frame comprises a wing spar; The first adapter is mounted on the wing spar.

43. An aircraft, characterized in that: It comprises a fuselage and a power arm as described in any one of claims 1-40, or a wing assembly as described in claim 41 or 42, wherein the power arm or the wing assembly is installed on the side of the fuselage.

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