WO2021139650A1

WO2021139650A1 - Power assembly, arm assembly, arm connector, and unmanned aerial vehicle

Info

Publication number: WO2021139650A1
Application number: PCT/CN2021/070322
Authority: WO
Inventors: 董国帅; 朱路路; 郑卫锋; 卢志宏
Original assignee: 苏州臻迪智能科技有限公司
Priority date: 2020-01-10
Filing date: 2021-01-05
Publication date: 2021-07-15
Also published as: CN114901549A; CN113120214A

Abstract

A power assembly (10), comprising: a propeller (13) comprising a propeller hub (131) and a propeller blade (136), the propeller blade (136) and the propeller hub (131) being rotatably connected; a propeller driving device (11) fixedly connected to the propeller hub (131) and used to drive the propeller hub (131) to rotate, the direction of rotation of the propeller hub (131) being perpendicular to the direction of rotation of the propeller blade (136) relative to the propeller hub (131); an elastic member (16, 16a) connected between the propeller hub (131) and the propeller blade (136), and comprising a first connection end (161) and a second connection end (163) opposite to each other, the first connection end (161) being connected to the propeller blade (136), the second connection end (163) being connected to the propeller hub (131), and the elastic member (16, 16a) being capable of keeping the propeller blade (136) in an unfolded state; and a propeller blade tray (15) disposed at a connection location between the propeller driving device (11) and the propeller (13), the propeller blade tray (15) being capable of moving back and forth in the axial direction thereof, so as to restrain an elastic force of the elastic member (16, 16a) to fold the propeller blade (136), and/or to release an elastic force of the elastic member (16, 16a) to unfold the propeller blade (136). In the present disclosure, the back-and-forth movement of the propeller blade tray (15) in the axial direction thereof enables the propeller to be unfolded when in use and folded when not in use, thereby facilitating storage and placement of the power assembly, and accordingly facilitating storage and placement of an unmanned aerial vehicle having the power assembly. The present disclosure further relates to an arm assembly, an arm connector, and an unmanned aerial vehicle.

Description

Power components, arm components, arm connectors and drones

Cross-references to related applications

This disclosure requires the priority of the Chinese patent application filed with the Chinese Patent Office on January 10, 2020, with the application number CN202010030633.2, titled "power assembly, arm assembly, arm attachment and drone", which The entire content is incorporated into this disclosure by reference.

Technical field

The present disclosure relates to the field of unmanned aerial vehicles, and in particular to a power assembly, an arm assembly, an arm connecting piece and an unmanned aerial vehicle.

Background technique

In recent years, due to its convenience, drones have been widely used in aerial photography, agriculture, plant protection, selfies, express transportation, disaster rescue, observation of wild animals, monitoring of infectious diseases, surveying and mapping, news reports, power inspections, disaster relief, Film and television shooting or creating romance and other fields. However, the propellers of the current drones are usually in a fixed unfolded state, which makes it inconvenient to store the drones.

Summary of the invention

The purpose of the embodiments of the present disclosure is to provide a power assembly, an arm assembly, an arm connecting piece and an unmanned aerial vehicle, so as to improve the current problem of inconvenient storage and placement of an unmanned aerial vehicle.

A first aspect of the present disclosure provides a power assembly, including: a propeller, including a hub and blades, the blades are rotatably connected with the hub; a propeller drive device is fixedly connected with the hub for Drive the hub to rotate, the direction of rotation of the hub and the direction of rotation of the blades relative to the hub are perpendicular to each other; an elastic member is connected between the hub and the blades, including opposite The first connecting end and the second connecting end, the first connecting end is connected to the blade, the second connecting end is connected to the hub, and the elastic member can keep the blade in an unfolded state And a blade tray, which is arranged at the connection between the propeller driving device and the propeller, the blade tray can move back and forth along its axial direction to restrain the elastic force of the elastic member to make the blades close and/ Or release the elastic force of the elastic member to expand the blade.

The power assembly provided by the present disclosure enables the propeller to be unfolded when in use and folded when not in use through the back and forth movement of the blade tray along its axial direction, thereby facilitating the storage and placement of the power assembly, thereby improving the drone with the power assembly The storage placement problem.

A second aspect of the present disclosure provides a machine arm assembly, including a machine arm and the aforementioned power assembly. The power assembly is rotatably connected to one end of the machine arm, and the machine arm assembly further includes a rotating machine connected to the machine arm. The driving device is configured to drive the power assembly to rotate and fold in parallel with the arm, or to rotate and unfold in a direction perpendicular to the arm.

In the arm assembly provided by the present disclosure, the power assembly tends to rotate and fold parallel to the arm or to rotate and unfold perpendicular to the arm through a rotary drive device, which can facilitate the storage of the arm assembly and further improve the arm assembly The storage and placement of drones.

A third aspect of the present disclosure provides an arm connecting piece, which is configured to connect the aforementioned arm assembly to the drone, and includes a fuselage fixing piece and a first arm fixing piece rotatably connected to opposite ends of the fuselage fixing piece. A connecting piece and a second arm fixing piece, the fuselage fixing piece is fixedly connected to the fuselage of the drone, the first arm fixing piece and the second arm fixing piece are respectively It is fixedly connected with the arm of the arm assembly.

A fourth aspect of the present disclosure provides an unmanned aerial vehicle including a fuselage, the aforementioned arm connecting piece and the aforementioned arm assembly, and the arm connecting piece connects the arm assembly to the fuselage.

The details of one or more embodiments of the present disclosure are set forth in the following drawings and description. Other features, objects, and advantages of the present disclosure will become apparent from the description, drawings, and claims.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the following will briefly introduce the drawings that need to be used in the embodiments of the present disclosure. It should be understood that the following drawings only show certain embodiments of the present disclosure. Therefore, It should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other relevant drawings can be obtained from these drawings without creative work.

Fig. 1 is a perspective view of a power assembly provided by an embodiment of the present disclosure.

Fig. 2 is an enlarged view of area A in Fig. 1.

Fig. 3 is a schematic diagram of the structure of the upper cover of the propeller driving device of Fig. 1.

Fig. 4 is a perspective view of the hub in Fig. 1.

Fig. 5 is a perspective view of the paddle in Fig. 1.

Fig. 6 is a perspective view of the paddle tray in Fig. 1.

FIG. 7 is a schematic structural diagram of an elastic member provided by an embodiment of the disclosure in a natural state.

Fig. 8 is a schematic structural diagram of the elastic member of Fig. 7 in a stretched state.

Fig. 9 is a schematic structural diagram of the elastic member of Fig. 7 in a stretched state in the propeller.

Fig. 10 is a schematic structural diagram of the elastic member of Fig. 7 in a natural state in the propeller.

FIG. 11 is a schematic structural diagram of an elastic member in a natural state according to another embodiment of the present disclosure.

Fig. 12 is a schematic structural diagram of the elastic member of Fig. 11 in a compressed state.

Fig. 13 is a schematic structural diagram of the elastic member of Fig. 11 in a stretched state in the propeller.

Fig. 14 is a schematic structural diagram of the elastic member of Fig. 11 in a natural state in the propeller.

FIG. 15 is a schematic structural diagram of an unfolded state of an arm assembly provided by an embodiment of the present disclosure.

FIG. 16 is a schematic structural diagram of a folded state of an arm assembly provided by an embodiment of the present disclosure.

FIG. 17 is a schematic structural diagram of a bracket provided by an embodiment of the disclosure.

FIG. 18 is a schematic structural diagram of a fixing frame provided by an embodiment of the disclosure.

FIG. 19 is a schematic structural diagram of a landing gear provided by an embodiment of the disclosure.

FIG. 20 is a schematic structural diagram of a machine arm connecting piece connected with a machine arm assembly according to an embodiment of the present disclosure.

FIG. 21 is a schematic structural diagram of a machine arm connector in a folded state according to an embodiment of the present disclosure.

Fig. 22 is a schematic structural diagram of the arm connecting member with the upper pressing plate removed in an unfolded state according to an embodiment of the present disclosure.

FIG. 23 is an exploded view of the arm connecting piece provided by an embodiment of the disclosure.

FIG. 24 is a top view of a machine arm connecting piece in a folded state provided by another embodiment of the present disclosure that connects the organic arm assembly and removes the upper pressure plate.

FIG. 25 is a top view of a machine arm connecting piece in an unfolded state provided by another embodiment of the present disclosure, which connects the organic arm assembly and removes the upper pressure plate.

FIG. 26 is a schematic structural diagram of a machine arm connector provided by another embodiment of the present disclosure.

Fig. 27 is a top view of Fig. 26.

Fig. 28 is a cross-sectional view of the arm connecting member along the line A-A in Fig. 27;

Fig. 29 is a schematic diagram of the mating process of the dial wheel and the sheave wheel of the arm connector in Fig. 26.

Fig. 30 is a schematic structural diagram of a machine arm connector provided by another embodiment.

Figure 31 is a schematic structural diagram of a machine arm connector provided by still another embodiment.

Fig. 32 is a schematic diagram of the mating process of the dial wheel and the sheave wheel of the arm connector in Fig. 31.

FIG. 33 is a schematic structural diagram of an unmanned aerial vehicle provided with an unfolded arm assembly according to an embodiment of the present disclosure.

Fig. 34 is a side view of the drone with the arm assembly in a folded state according to an embodiment of the disclosure.

Icon: Power Unit-10; Propeller Drive-11; Propeller-13; Blade Tray-15; Shell-111; Upper Cover-112; Body-113; Cylinder-114; Through Hole-1141; First Rotating Shaft -115; lower shell-116; propeller hub-131; blade-136; top surface-1311; bottom surface-1312; outer peripheral surface-1313; fixing hole-132; rib-1321; blade connecting groove-133 Groove connecting hole-1331; handle-137; blade-138; handle connecting hole-1371; first extension-1372; second extension-1373; containment space-1374; through hole-151; hole wall- 1511; accommodating hole-153; tray driving device-14; fixing member-141; driving motor-142; driving shaft 143; driving gear-144; elastic member-16, 16a; first connecting end-161, 161a; winding part -162; second connecting end-163, 163a; first extension rod-164; second extension rod-165; cooling device-17; top cover-171; bottom shell-172; arm assembly-20; arm- 21; bracket-22; connecting part-221; first cantilever-222; second cantilever 223; connecting hole-2211,3731,330,350; fixing hole-2212; first shaft hole-2221; second shaft hole -2231; First convex shaft-1161; Second convex shaft-1162; Rotation drive device-23; Socket-24; Connecting part-241; Fixing frame-25; Fixing part-251; Third cantilever-252 ; Fourth cantilever-253; third shaft hole 2521; fourth shaft hole 2531; third convex shaft-1721; fourth convex shaft-1722; limit protrusion-1723; first limit surface-1724; second Limit surface-1725; landing gear-26; connecting end-261,3711; free end-262; pulley-263; arm connecting piece-30,30a,30b,30c; fuselage fixing piece-31,31a, 31b, 31c; first arm fixing part-33, 33a, 33b, 33c; second arm fixing part-35, 35a, 35c; upper pressing plate-311, 311a, 311b, 311c; lower pressing plate-313, 313a, 313b, 313c; shaft connection hole-3111, 3111a, 3111c, 3131, 3131a; fixed plate-3113, 3133; first connecting shaft-32, 32a, 32c; second connecting shaft-34, 34a, 34c; arm drive Device-36,36a,36b,36c; Transmission component-37,37a,37b,37c; Drive shaft-361; Screw-371; Sliding plate-372; Threaded hole-3721; First sliding groove-3722; Second Sliding groove-3723; first sliding hole-3724; second sliding hole-3725; first stroke bracket-373; second row Stroke support-374; first perforation-3741; second perforation-3742; first gear-375; second gear-376; first sliding rod-377; second sliding rod-378; fixing holes-3732, 3733 , 3743, 3744; first bearing -3791; second bearing -3792; circlip -370; clamping part -3712,3611; arm fixing end 331,351; sliding connection end -333,353; arm connecting hole-3311, 3511; first extension arm -3331,3531; second extension arm -3333,3533; shaft hole -3332,3334,3811,3532,3534,3821; first slider -381; second slider -382; A rack-3726; a second rack-3727; a first tooth joint part-334; a second tooth joint part-354; UAV-100; connecting part-1011; connecting hole-1012; first connecting hole- 3113a, 3113c; raised portion-3112a; third connecting hole 3133a;

end caps

315a, 315b; motor-361a, 361c; first transmission wheel-363a, 363c; motor mounting seat-362a, 362c; mounting platform-3621a, 3621c; first side plate-3622a, 3622c; first lug-3624a, 3624c; dial-371a, 371b, 371c; second transmission wheel-373a, 373c; dial shaft-375a, 375b, 375c; body-3711a , 3711b, 3711c; lever-3713a, 3713b, 3713c; channel-331a, 351a, 331b, 331c, 351c; arc-333a, 353a, 333b, 333c, 353c; mounting plate-312b; first mounting part -3131b; second mounting part -3133b; connecting part -3132b; second connecting hole 3115c; bump -3132c; auxiliary support -315c; second side plate -3623c; second lug -3625c; first adjusting groove -3626c; The first abutment plate-3628c.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present disclosure clearer, the following further describes the present disclosure in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, but not used to limit the present disclosure.

Please refer to FIG. 1 and FIG. 2 together. An embodiment of the present disclosure provides a power assembly 10 to provide flight power for the drone. The power assembly 10 includes a propeller driving device 11, a propeller 13 connected to the propeller driving device 11, and a blade tray 15 provided at the connection between the propeller driving device 11 and the propeller 13. The blade tray 15 can move back and forth along its axial direction to allow the propeller 13 to be folded and/or unfolded. The propeller driving device 11 is configured to drive the propeller 13 to rotate after the propeller tray 15 is moved to allow the propeller 13 to be deployed, so as to provide flight power for the drone.

In this embodiment, the propeller driving device 11 may be a motor.

Please refer to FIGS. 2 and 3 together, the propeller driving device 11 includes a housing 111. The casing 111 includes an upper cover 112 and a lower casing 116. The upper cover 112 and the lower casing 116 enclose a containing space, and are configured to contain the driving mechanism included in the propeller driving device. In the illustrated embodiment, the upper cover 112 includes a main body 113 and a cylindrical portion 114 protruding from the main body 113. Optionally, the body 113 may include a step portion 1131. The step portion 1131 is substantially elongated. The cylindrical portion 114 protrudes from one end of the step portion 1131. The cylindrical portion 114 is provided with a through hole 1141 along its axial direction. The through hole 1141 penetrates the body 113. In this embodiment, the propeller driving device 11 further includes a first rotating shaft 115. The first rotating shaft 115 passes through the through hole 1141 and is fixedly connected to the propeller 13. In the illustrated embodiment, the outer side wall of the cylindrical portion 114 is provided with external threads, which are configured to cooperate with the blade tray 15 to realize the back and forth movement of the blade tray 15 along its axial direction.

Please refer to FIG. 2, FIG. 3 and FIG. 4 together, the propeller 13 is disposed on the upper cover 112 and connected to the propeller driving device 11. The propeller 13 includes a hub 131 and a blade 136 connected to the hub 131. The propeller driving device 11 is connected to the propeller hub 131 and is configured to drive the propeller hub 131 to rotate. In this embodiment, the first rotating shaft 115 is fixedly connected to the hub 131 and is configured to drive the hub 131 to rotate. The direction of rotation of the hub 131 is perpendicular to the direction of rotation of the blade 136 relative to the hub 131 during the unfolding process or the retracting process.

In this embodiment, the hub 131 is substantially in the shape of a disc. The hub 131 includes a top surface 1311, a bottom surface 1312 parallel to the top surface 1311, and an outer peripheral surface 1313 connected between the top surface 1311 and the bottom surface 1312. A fixing hole 132 is provided in the center of the hub 131. The fixing hole 132 penetrates the top surface 1311 and the bottom surface 1312. The wall of the fixing hole 132 is provided with ribs 1321 extending in the axial direction of the hub 131 at intervals. Correspondingly, the outer peripheral surface of the first rotating shaft 115 is provided with a complementary structure of the rib 1321, and the boss 131 is fixedly connected to the first rotating shaft 115 through the cooperation of the rib 1321 and the complementary structure, so that the rotation of the first rotating shaft 115 is driven. The propeller hub 131 rotates, thereby driving the propeller 13 to rotate.

It can be understood that the fixing between the first rotating shaft 115 and the hub 131 is not limited to the fixing holes 132 provided on the hub 131 and the ribs 1321 are provided on the wall of the fixing holes 132, and the first rotating shaft 115 The outer peripheral surface of the shaft is provided with the complementary structure of the rib 1321, as long as the fixed connection between the first shaft 115 and the hub 131 can be realized, for example, the first shaft 115 and the propeller can also be realized by welding. Fixing of the hub 131.

The hub 131 is also provided with a blade connecting groove 133. In this embodiment, a plurality of radially extending blade connection grooves 133 are provided equiangularly from the outer circumference of the hub 131 to the inside of the hub 131. The blade connecting groove 133 penetrates the top surface 1311, the bottom surface 1312 and the outer peripheral surface 1313 of the hub 131 to facilitate the folding and unfolding of the blade 136. In order to reduce the weight of the propeller hub 131, the part of the propeller hub 131 located between two adjacent blade connecting grooves 133 may be hollowed out. In order to facilitate the connection between the hub 131 and the blade 136, the side groove wall of each blade connection groove 133 is provided with a groove connection hole 1331. In this embodiment, the number of blade connecting grooves 133 is three. Optionally, a hook portion (not shown) may be provided on the bottom wall of the blade connecting groove 133, which is configured to provide elasticity when the power assembly 10 includes an elastic member connected between the hub 131 and the blade 136 One end of the piece is hung.

The number of blades 136 corresponds to the number of blade connecting grooves 133.

Please refer to FIGS. 2, 4 and 5 together. The blade 136 includes a handle 137 and a blade 138 fixedly connected to the handle 137.

The handle 137 is arranged in the blade connecting groove 133 and is connected with the groove wall of the blade connecting groove 133 through a connecting shaft, so that the handle 137 is hinged with the hub 131 and the blade 136 can rotate around the connecting shaft. In this embodiment, the handle 137 is provided with a handle connecting hole 1371 corresponding to the slot connecting hole 1331, and a connecting shaft is inserted through the slot connecting hole 1331 and the handle connecting hole 1371, so that the handle 137 is hinged with the hub 131 . It can be understood that the blade 138 and the handle 137 may be integrally formed, or the blade 138 and the handle 137 are connected by a screw and a screw hole.

In this embodiment, the handle 137 includes a first extension portion 1372 and a second extension portion 1373 that extend in a direction away from the blade 138 and are disposed oppositely. The first extension portion 1372 and the second extension portion 1373 are respectively provided with a handle connection hole 1371. The handle connecting hole 1371 of the first extension portion 1372 and the handle connecting hole 1371 of the second extension portion 1373 are arranged coaxially. A receiving space 1374 is formed between the first extension portion 1372 and the second extension portion 1373. Optionally, the handle 137 may also be provided with an insertion slot (not shown), which is configured to allow the other end of the elastic member to be inserted when the power assembly 10 includes an elastic member connected between the blade 136 and the hub 131 . Specifically, the insertion groove may be opened from the bottom wall of the receiving space 1374 into the handle 137.

Please refer to FIG. 1, FIG. 2 and FIG. 6 together, the blade tray 15 is provided at the connection between the propeller driving device 11 and the propeller 13.

In this embodiment, the paddle tray 15 is sleeved on the cylindrical portion 114. The paddle tray 15 defines a through hole 151 along its axial direction. The through hole 151 includes a hole wall 1511. The hole wall 1511 is provided with an internal thread that cooperates with the external thread of the outer side wall of the cylindrical portion 114. In this embodiment, the paddle tray 15 is further provided with a receiving hole 153 along its axial direction. The receiving hole 153 and the through hole 151 are arranged coaxially, and the hole diameter of the receiving hole 153 is larger than the hole diameter of the through hole 151. The accommodating hole 153 is configured to accommodate the hub 131 and the end of the blade 136 connected to the hub 131 (that is, the handle 137) when the propeller 13 is folded.

In this embodiment, when the propeller 13 is closed, the handle 137 is received in the receiving hole 153, and the end of the handle 137 away from the blade 138 abuts against the bottom wall of the receiving hole 153, which can increase the blade 136 when the propeller 13 is closed. The stability of the blade 136 is prevented from shaking.

In this embodiment, the power assembly 10 further includes a tray driving device 14. The tray driving device 14 is arranged on the upper cover 112 and arranged in parallel with the paddle tray 15. In the embodiment shown in FIG. 2, the tray driving device 14 is disposed on the step portion 1131 and is located at the other end of the step portion 1131 relative to the end of the cylindrical portion 114. The tray driving device 14 is connected to the paddle tray 15 and is configured to drive the paddle tray 15 to move the paddle tray 15 back and forth.

In this embodiment, the tray driving device 14 and the paddle tray 15 are connected by a gear structure. The tray driving device 14 includes a fixing member 141, a driving motor 142, a driving shaft 143, and a driving gear 144. The fixing member 141 is configured to fix the tray driving device 14 on the upper cover 112. The driving motor 142 is connected to the driving shaft 143 and is configured to drive the driving shaft 143 to rotate. The driving gear 144 is fixedly connected to the driving shaft 143, and the rotation of the driving shaft 143 drives the driving gear 144 to rotate. In this embodiment, the outer peripheral surface of the blade tray 15 is provided with a toothed structure that meshes with the driving gear 144, and the rotation of the driving gear 144 drives the blade tray 15 to rotate. In this embodiment, when the paddle tray 15 rotates forward or backward under the drive of the tray driving device 14, the back and forth movement is realized through the cooperation of the internal thread and the external thread.

It can be understood that in other embodiments, the tray driving device 14 and the paddle tray 15 may be connected by a conveyor belt. At this time, the drive gear 144 of the tray drive device 14 can be replaced with a driving wheel fixedly connected to the drive shaft 143, the toothed structure of the outer peripheral surface of the blade tray 15 can be omitted, and the blade tray 15 serves as a driven wheel, which is passed by the driving wheel. The conveyor belt drives forward or reverse rotation. Of course, the connection mode of the tray driving device 14 and the paddle tray 15 may also be a chain transmission connection, or a combination of one or more transmission modes such as a gear structure connection, a conveyor belt connection, or a chain transmission connection.

It can be understood that in other embodiments, the tray driving device 14 may be configured as a lifting mechanism fixedly connected to the paddle tray 15. At this time, the internal thread of the hole wall of the through hole 151, the external thread of the outer peripheral surface of the cylindrical portion 114, and the paddle The toothed structure on the outer peripheral surface of the leaf tray 15 can be omitted, and the back and forth movement of the blade tray 15 is directly realized by the lifting mechanism.

In this embodiment, when the tray driving device 14 moves the blade tray 15 to allow the propeller 13 to expand, the propeller 13 may remain in the collapsed state due to inertia. In this case, when the propeller driving device 11 drives the propeller 13 to rotate in the radial direction of the blade tray 15, the propeller 13 is unfolded by the centrifugal force generated by the rotation.

It is understandable that please refer to FIGS. 7 to 10 together. In an embodiment, the power assembly 10 may further include an elastic member 16 connected between the hub 131 and the blade 136. The elastic member 16 is configured to collapse the propeller 13 and/or expand the propeller 13 (that is, make the blades 136 of the propeller 13 in a collapsed state or an expanded state). The elastic member 16 may be, for example, a torsion spring, a tension spring, or the like. In this embodiment, the elastic member 16 is a torsion spring.

In one embodiment, the elastic member 16 stores the elastic force that causes the propeller 13 to collapse (that is, the elastic member 16 can keep the blade 136 in the collapsed state). When the tray driving device 14 moves the blade tray 15 to allow the propeller 13 to be deployed, the propeller 13 is kept in a collapsed state due to the action of the elastic member 16. In this case, when the propeller driving device 11 drives the propeller 13 to rotate, the centrifugal force generated by the rotation gradually increases as the rotation speed increases. When the centrifugal force increases to be greater than or equal to the elastic force of the elastic member 16, the combined force of the centrifugal force generated by the rotation and the elastic force of the elastic member 16 causes the propeller 13 to be in an unfolded state. When the propeller driving device 11 stops driving the propeller 13 to rotate, the centrifugal force gradually disappears, and the elastic force of the elastic member 16 drives the propeller 13 to close.

The elastic member 16 includes a first connecting end 161 and a second connecting end 163 opposite to each other. The first connecting end 161 is connected with the blade 136 (in the illustrated embodiment, with the handle 137 of the blade 136). The second connecting end 163 is connected to the hub 131. In the natural state of the elastic member 16, the angle between the extending direction of the first connecting end 161 and the extending direction of the second connecting end 163 ranges from 85° to 95°. The elastic member 16 may further include a winding portion 162 connected between the first connecting end 161 and the second connecting end 163.

In the illustrated embodiment, the elastic member 16 is generally a ring-like structure. The first connecting end 161 is inserted into the insertion groove of the handle 137 to realize the connection between the elastic member 16 and the handle 137. The winding portion 162 is wound around the connecting shaft connecting the blade 136 and the hub 131 (that is, the connecting shaft passing through the slot connecting hole 1331 and the handle connecting hole 1371). The second connecting end 163 connects the elastic member 16 with the hub 131 by hooking on the hooking portion provided on the bottom wall of the blade connecting groove 133. Optionally, the elastic member 16 includes a first extension rod 164 and a second extension rod 165 that extend from the first connection end 161 to the second connection end 163 and are arranged in parallel. The distance between the second extension rod 165 and the first extension rod 164 gradually decreases from the second connection end 163 to the first connection end 161. Optionally, the elastic member 16 has an axisymmetric structure with respect to the connection line between the midpoint of the first connecting end 161 and the midpoint of the second connecting end 163, so that the stability of the elastic member 16 can be improved.

It can be understood that in other embodiments, an inserting groove may be opened from the bottom wall of the blade connecting groove 133 to the inside of the hub 131 for the second connecting end 163 to be inserted, and the bottom wall of the receiving space is provided for the first connecting end. The hooking portion for hanging, or, respectively, opening from the bottom wall of the blade connecting groove 133 to the inside of the hub 131 and from the bottom wall of the receiving space 1374 to the inside of the handle 137 for the first connecting end 161 and the second connecting end 163 is inserted into the insertion groove, or respectively provided on the bottom wall of the blade connection groove 133 and the bottom wall of the receiving space 1374 with hooking parts for the first connection end 161 and the second connection end 163 to be hung, the elastic member 16 The connection with the blade 136 and the hub 131 is not limited to the manner described in the above embodiment, as long as the connection between the elastic member 16 and the blade 136 and the hub 131 can be realized.

Please refer to FIGS. 11 to 14 together. In another embodiment, the elastic member 16a stores the elastic force for deploying the propeller 13 (that is, the elastic member 16 can keep the blade 136 in the deployed state). The structure of the elastic element 16a provided in this embodiment is substantially the same as the structure of the elastic element 16 provided in the previous embodiment, with the difference that in the natural state of the elastic element 16a, the extension direction of the first connecting end 161a is the same as The angle formed by the extending direction of the second connecting end 161a ranges from 120° to 130°. In this case, when the tray driving device 14 moves the blade tray 15 to allow the propeller 13 to be collapsed, the propeller 13 gradually reaches the collapsed state due to the restriction of the blade tray 15 (ie, restraining the elastic force of the elastic member 16); When the tray driving device 14 moves the blade tray 15 to allow the propeller 13 to expand, the restriction of the blade tray 15 on the propeller 13 gradually disappears (that is, the elastic force of the elastic member 16 is released), and the elastic member 16a makes the propeller 13 The unfolding elastic force drives the propeller to gradually unfold.

Please refer to FIG. 1 again. In this embodiment, the power assembly 10 further includes a cooling device 17 connected to the propeller driving device 11 and configured to cool the propeller driving device 11 to avoid excessive temperature during the operation of the propeller driving device 11. The cooling device 17 is connected to one end of the propeller driving device 11 and is located on the side of the propeller driving device 11 away from the blade tray 15 and the tray driving device 14. In the embodiment shown in FIGS. 1 and 2, the outer shell of the cooling device 17 includes a top cover 171 and a bottom shell 172. The top cover 171 and the bottom case 172 enclose a containing space, and are configured to contain the cooling mechanism included in the cooling device. The top cover 171 is connected to one end of the lower case 116. Optionally, the top cover 171 and the lower housing 116 are integrally formed.

Please refer to FIG. 15 and FIG. 16, an embodiment of the present disclosure further provides an arm assembly 20, including an arm 21 and the aforementioned power assembly 10. The power assembly 10 is rotatably connected to one end of the arm 21.

The arm assembly 20 also includes a bracket 22. The bracket 22 is fixedly connected to one end of the arm 21. The power assembly 10 is rotatably connected to one end of the arm 21 through a bracket 22. It can be understood that in other embodiments, the bracket 22 may be integrally formed with the arm 21.

Please also refer to FIGS. 15 to 17. In this embodiment, the bracket 22 includes a connecting portion 221 and a first cantilever 222 and a second cantilever 223 extending in the same direction from the connecting portion 221 and arranged in parallel. The connecting portion 221, the first cantilever 222 and the second cantilever 223 form a U-like structure.

The connecting portion 221 is fixedly connected to the arm 21. In this embodiment, the connecting portion 221 is provided with a connecting hole 2211 along its axial direction, and is configured to be connected to the arm 21. The connecting hole 2211 may be a through hole or a blind hole opened from the surface of the connecting portion 221 away from the first cantilever 222 and the second cantilever 223 toward the inside of the connecting portion 221 along the axial direction thereof. Optionally, the hole wall of the connecting portion 221 can be provided with a fixing hole 2212, and the corresponding fixing hole 2212 on the arm 21 can be provided with an organic arm fixing hole, which is matched with the fixing hole 2212 and the arm fixing hole by a screw , In order to improve the stability of the connection between the connecting portion 221 and the arm 21. Optionally, in order to reduce the weight of the arm assembly 20, the hole wall of the connecting portion 221 may be hollowed out.

The ends of the first cantilever 222 and the second cantilever 223 away from the connecting portion 221 are respectively provided with a first shaft hole 2221 and a second shaft hole 2231. The first shaft hole 2221 and the second shaft hole 2231 are coaxially arranged. Please refer to FIGS. 1 and 2 again. Correspondingly, the outer peripheral surface of the propeller driving device 11 is provided with a first convex shaft 1161 and a second convex shaft 1162 respectively passing through the first shaft hole 2221 and the second shaft hole 2231. The first convex shaft 1161 and the second convex shaft 1162 are coaxial and protrude in opposite directions from the outer peripheral surface of the propeller driving device 11. In this embodiment, the first convex shaft 1161 and the second convex shaft 1162 are disposed on the lower casing 116 and are located in the middle of the length direction of the lower casing 116 near the top cover 171. The first convex shaft 1161 and the second convex shaft 1162 are respectively protruded in opposite directions along the width direction of the lower housing 116. It can be understood that in other embodiments, the first convex shaft 1161 and the second convex shaft 1162 may also be arranged at other positions on the outer circumferential surface of the propeller driving device 11, for example, on the bottom shell 172 of the cooling device 17, which is not in this disclosure. Make a limit. In this embodiment, in order to reduce the weight of the arm assembly 20, the first cantilever 222 and the second cantilever 223 may also be hollowed out.

The arm assembly 20 also includes a rotation driving device 23 configured to drive the power assembly 10 to rotate and fold in parallel with the arm 21 or to rotate and unfold in a direction perpendicular to the arm 21. The rotation driving device 23 can be a hydraulic push rod, a pneumatic push rod or an electric push rod. One end of the rotation driving device 23 is connected to the arm 21 and the other end is connected to the power assembly 10.

In this embodiment, the rotation driving device 23 is connected to the arm 21 through a socket 24. The sleeve 24 is sleeved on the arm 21. The socket 24 includes a connecting portion 241 protruding in the radial direction thereof. One end of the rotation driving device 23 is connected to the connecting portion 241.

Please refer to FIG. 15, FIG. 16 and FIG. 18 together, the arm assembly 20 may further include a fixing frame 25. The rotation driving device 23 is fixedly connected to the fixing frame 25. The power assembly 10 is rotatably connected with the fixing frame 25. The other end of the rotation driving device 23 is connected to the power assembly 10 through a fixing frame 25. The rotation driving device 23 drives the power assembly 10 to rotate relative to the bracket 22 by moving the fixing frame 25. It can be understood that in other embodiments, the rotation driving device 23 and the fixing frame 25 may be integrally formed.

In this embodiment, the fixing frame 25 includes a fixing portion 251 and a third cantilever 252 and a fourth cantilever 253 extending in the same direction from the fixing portion 251 and arranged in parallel. The fixing portion 251 is fixedly connected to the rotation driving device 23. The ends of the third cantilever 252 and the fourth cantilever 253 away from the fixing portion 251 have a third shaft hole 2521 and a fourth shaft hole 2531 respectively. The third shaft hole 2521 and the fourth shaft hole 2531 are arranged coaxially. Please refer to FIG. 1, FIG. 15 and FIG. 16, again, the outer peripheral surface of the propeller driving device 11 is also provided with a third convex shaft 1721 and a fourth convex shaft 1722 respectively penetrated in the third shaft hole 2521 and the fourth shaft hole 2531 . The third convex shaft 1721 and the fourth convex shaft 1722 are coaxial and protrude in opposite directions from the outer peripheral surface of the propeller driving device 11. In this embodiment, the third convex shaft 1721 and the fourth convex shaft 1722 are arranged in parallel with the first convex shaft 1161 and the second convex shaft 1162. Optionally, the outer peripheral surface of the propeller driving device 11 is protruded with a limiting protrusion 1723 at positions adjacent to the third convex shaft 1721 and the fourth convex shaft 1722 respectively. The limiting protrusion 1723 includes a first limiting surface 1724 and a second limiting surface 1725 perpendicular to each other. The first limit surface 1724 is configured to abut against the third cantilever 252 and the fourth cantilever 253 after the power assembly 10 is driven by the rotation driving device 23 to rotate and fold, so as to restrict the power assembly 10 from continuing to rotate. The second limit surface 1725 is configured to abut against the first cantilever 222 and the second cantilever 223 after the rotation driving device 23 drives the power assembly 10 to rotate and expand, so as to restrict the power assembly 10 from continuing to rotate. It can be understood that in other embodiments, a limit protrusion 1723 may be provided only at a position adjacent to the third convex shaft 1721 or the fourth convex shaft 1722, and it can also be used after the rotary drive device 23 drives the power assembly 10 to rotate and fold or After the rotation driving device 23 drives the power assembly 10 to rotate and unfold, the power assembly 10 is restricted from continuing to rotate. In the embodiments shown in FIG. 1, FIG. 13 and FIG. 14, the third convex shaft 1721, the fourth convex shaft 1722 and the limiting protrusion 1723 are all disposed on the bottom shell 172.

Please refer to FIG. 15, FIG. 16 and FIG. 19 together. In this embodiment, the arm assembly 20 further includes a landing gear 26. The landing gear 26 is fixedly connected to the propeller driving device 11. The landing gear 26 and the propeller 13 are respectively located on opposite sides of the propeller driving device 11. In addition, the landing gear 26 extends in the opposite direction with respect to the propeller 13 after being folded. The landing gear 26 rotates and folds or unfolds together when the rotating drive device 23 drives the power assembly 10 to rotate and fold or rotate and unfold. The landing gear 26 is configured to maintain the stability of the drone when the drone is taking off or landing.

In the embodiments shown in FIGS. 15, 16 and 19, the landing gear 26 is connected to the side of the bottom shell 172 away from the top cover 171. The landing gear 26 includes a connecting end 261 and a free end 262 opposite to the connecting end 261. The landing gear 26 also includes a pulley 263 connected to the free end 262.

In the arm assembly 20 provided by the present disclosure, the power assembly 10 is driven by the rotary drive device 23 to rotate and fold parallel to the arm 21 or to rotate and unfold perpendicular to the arm, which can facilitate the storage of the arm assembly 20 and further improve The storage and placement of the drone with the arm assembly 20 is a problem.

Please refer to FIGS. 20 to 23 together. An embodiment of the present disclosure further provides an arm connecting member 30. The arm connector 30 is configured to connect the arm assembly 20 to the fuselage of the drone.

In this embodiment, the arm connecting member 30 includes a body fixing member 31 and a first arm fixing member 33 and a second arm fixing member 35 rotatably connected to opposite ends of the body fixing member 31. The first arm fixing member 33 and the second arm fixing member 35 are respectively fixedly connected to the arm 21 of one arm assembly 20.

The fuselage fixing member 31 is fixedly connected with the fuselage of the drone. In this embodiment, the fuselage fixing member 31 includes an upper pressing plate 311 and a lower pressing plate 313 arranged in parallel and spaced apart. The upper pressing plate 311 and the lower pressing plate 313 are respectively fixedly connected to the fuselage of the drone.

In this embodiment, the upper pressing plate 311 is substantially elongated and has a centrally symmetric structure. The opposite ends of the upper pressing plate 311 are provided with shaft connection holes 3111. In this embodiment, the shaft hole 3111 is provided along the thickness direction of the upper pressing plate 311. The middle part of the upper pressing plate 311 is respectively provided with fixing plates 3113 extending to both sides. The fixing plate 3113 is provided with screw holes, which are configured to cooperate with screws to fix the upper pressing plate 311 to the fuselage of the drone. The lower pressing plate 313 and the upper pressing plate 311 have the same structure. Correspondingly, the opposite ends of the lower pressing plate 313 are provided with shaft connection holes 3131, and the middle part of the lower pressing plate 313 is respectively provided with fixing plates 3133 extending to both sides. The fixing plate 3133 is provided with screw holes, which are configured to cooperate with screws to fix the lower pressing plate 313 to the fuselage of the drone.

In this embodiment, the arm connecting member 30 further includes a first connecting shaft 32 and a second connecting shaft 34. The first connecting shaft 32 and the second connecting shaft 34 are respectively connected to opposite ends of the body fixing member 31. The first arm fixing member 33 and the fuselage fixing member 31 are rotatably connected by a first connecting shaft 32. The second arm fixing member 35 and the fuselage fixing member 31 are rotatably connected by a second connecting shaft 34. In the embodiment shown in FIGS. 20-22, the two ends of the first connecting shaft 32 are respectively connected with the shaft hole 3111 of the upper pressing plate 311 and the shaft hole 3131 of the lower pressing plate 313. Two ends of the second connecting shaft 34 are respectively connected to the shaft hole 3111 of the upper pressing plate 311 and the shaft hole 3131 of the lower pressing plate 313.

In this embodiment, the arm connecting member 30 further includes an arm driving device 36, and a transmission connected between the arm driving device 36 and the first arm fixing member 33 and the second arm fixing member 35 Component 37. The arm driving device 36 drives the transmission assembly 37 to drive the first arm fixing member 33 and the second arm fixing member 35 to rotate in opposite directions at the same time, thereby driving the first arm fixing member 33 and the second arm fixing member 33 The arm assembly 20 connected by the connector 35 can be unfolded or folded. In this embodiment, the arm driving device 36 and the transmission assembly 37 are both arranged between the upper pressing plate 311 and the lower pressing plate 313.

In this embodiment, the arm driving device 36 may be, for example, a motor, including a driving shaft 361.

In this embodiment, the transmission assembly 37 is a screw transmission assembly.

The transmission assembly 37 includes a screw rod 371 and a sliding plate 372 connected with the screw rod 371. The opposite ends of the sliding plate 372 are slidably connected to the first arm fixing member 33 and the second arm fixing member 35.

The screw rod 371 includes a connecting end 3711. The connecting end 3711 is rotatably connected with the arm driving device 36. The arm driving device 36 drives the screw rod 371 to rotate through the connecting end 3711. In this embodiment, the screw rod 371 is a trapezoidal screw rod, which can realize self-locking, and can avoid the rotation of the first arm fixing member 33 and the second arm fixing member 35.

Specifically, a threaded hole 3721 is opened in the middle of the sliding plate 372. The threaded hole 3721 is opened along the width direction of the sliding plate 372. The screw rod 371 is threadedly engaged with the threaded hole 3721. The arm driving device 36 can drive the screw rod 371 to rotate, thereby driving the sliding plate 372 to move. In this embodiment, the opposite ends of the sliding plate 372 are further provided with a first sliding groove 3722 and a second sliding groove 3723 respectively. Both the first sliding groove 3722 and the second sliding groove 3723 extend along the length direction of the sliding plate 372. In this embodiment, the opposite ends of the sliding plate 372 are connected to the first arm fixing member 33 and the second arm fixing member 35 through the first sliding groove 3722 and the second sliding groove 3723, respectively. The fixing member 33 and the sliding block on the second arm fixing member 35 cooperate to achieve a sliding connection. In this embodiment, the sliding plate 372 is also provided with a first sliding hole 3724 and a second sliding hole 3725 for the sliding rod to pass through. The first sliding hole 3724 and the second sliding hole 3725 are both opened along the width direction of the sliding plate 372 and are located on both sides of the threaded hole 3721 respectively. Specifically, the first sliding hole 3724 is arranged between the threaded hole 3721 and the first sliding groove 3722, and the second sliding hole 3725 is arranged between the threaded hole 3721 and the second sliding groove 3723. Optionally, the structure of the sliding plate 372 is axisymmetric with respect to the axis where the threaded hole 3721 is located.

In this embodiment, the transmission assembly 37 further includes a first stroke support 373 and a second stroke support 374. The first travel support 373 and the second travel support 374 are arranged in parallel and fixedly connected to opposite sides of the fuselage fixing member 31 respectively. The sliding plate 372 is located between the first stroke support 373 and the second stroke support 374. The first stroke support 373 and the second stroke support 374 are configured to limit the sliding range of the sliding plate 372. In this embodiment, in order to make the structure of the arm connecting member 30 more compact, the arm driving device 36 is also located between the first stroke support 373 and the second stroke support 374. In this embodiment, the screw rod 371 is also located between the first stroke support 373 and the second stroke support 374. Specifically, the screw rod 371 extends from the first stroke support 373 to the second stroke support 374. The connecting end 3711 passes through the opposite side of the second stroke support 374 and the first stroke support 373. In this embodiment, the first stroke bracket 373 is provided with a connecting hole 3731 connected to the other end of the screw rod 371 opposite to the connecting end 3711. The connecting hole 3731 is opened along the thickness direction of the first stroke bracket 373. The second stroke bracket 374 is provided with a first through hole 3741 and a second through hole 3742. The first through hole 3741 is configured to allow the connecting end 3711 of the screw rod 371 to pass through. The second through hole 3742 is configured to allow the driving shaft 361 of the arm driving device 36 to pass through. In this embodiment, the first through hole 3741 and the second through hole 3742 are staggered in the width direction and the length direction of the second stroke bracket 374, so as to prevent the arm drive device 36 from obstructing the sliding plate 372 after the assembly of the arm connector 30 is completed. mobile. It can be understood that, in order to prevent the arm driving device 36 from obstructing the movement of the sliding plate 372 after the assembly of the arm connecting member 30 is completed, the arm driving device 36 can also be arranged on the side of the second stroke support 374 away from the first stroke support 373 , And directly connected with the connecting end 3711 of the screw rod 371. Specifically, the driving shaft 361 of the arm driving device 36 may be directly and fixedly connected to the connecting end 3711 of the screw rod 371 through a coupling.

In this embodiment, the transmission assembly 37 further includes a first gear 375 and a second gear 376 meshing with the first gear 375. The arm driving device 36 is connected to the first gear 375. The second gear 376 is fixedly connected to the connecting end 3711 of the screw rod 371. The arm driving device 36 drives the first gear 375 to rotate, thereby driving the screw rod 371 fixedly connected to the second gear 376 to rotate. In this embodiment, the first gear 375 and the second gear 376 are both arranged on the side of the second stroke support 374 away from the first stroke support 373.

It can be understood that in other embodiments, the first gear 375 and the second gear 376 can be replaced with a first pulley and a second pulley, respectively. The first pulley and the second pulley are connected by a transmission belt. The arm driving device 36 drives the first pulley to rotate, so as to drive the second pulley to rotate through the transmission belt, thereby driving the screw rod 371 to rotate.

In this embodiment, in order to increase the stability of the sliding plate 372 when sliding, the transmission assembly 37 further includes a first sliding rod 377 and a second sliding rod 378 connected between the first stroke support 373 and the second stroke support 374. The first sliding rod 377 and the second sliding rod 378 are respectively inserted in the first sliding hole 3724 and the second second sliding hole 3725, and the opposite ends of each are connected to the first stroke bracket 373 and the second stroke bracket 374, respectively. Fixed connection. In this embodiment, the first stroke bracket 373 is provided with fixing

holes

3732 and 3733 configured to be fixedly connected to the first sliding rod 377 and the second sliding rod 378. Optionally, the fixing

holes

3732 and 3733 are arranged axisymmetrically with respect to the axis of the connecting hole 3731. The second stroke bracket 374 is provided with fixing

holes

3743 and 3744 configured to be fixedly connected to the second sliding rod 377 and the second sliding rod 378. Correspondingly, the fixing

holes

3743 and 3744 are arranged axisymmetrically with respect to the axis of the first through hole 3741. In this embodiment, the first sliding rod 377 and the second sliding rod 378 can guide the sliding of the sliding plate 372 on the one hand, so that the sliding plate 372 keeps the screw rod 371 moving axially; 372 and the screw rod 371 have a certain supporting effect. When the arm assembly 20 connected to the first arm fixing part 33 or the second arm fixing part 35 is impacted, the torque caused by the impact can be caused by the screw rod 371. , The first sliding rod 377 and the second sliding rod 378 are shared, avoiding excessive torque caused by the impact of the arm assembly 20 connected to the first arm fixing member 33 or the second arm fixing member 35 , Causing the sliding plate 372 or the screw rod 371 to bend and damage; in addition, it can support the first stroke support 373 and the second stroke support 374 to a certain extent, and strengthen the first stroke support 373 and the second stroke support 374 Stiffness.

It can be understood that, in order to facilitate the rotation of the screw rod 371, the transmission assembly 37 may further include a first bearing 3791 and a second bearing 3792. The first bearing 3791 and the second bearing 3792 are respectively connected to opposite ends of the screw rod 371, and are respectively disposed in the connecting hole 3731 and the first through hole 3741. The other end of the screw rod 371 opposite to the connecting end 3711 is connected to the first stroke bracket 373 through the first bearing 3791. The connecting end 3711 of the screw rod 371 is connected to the second stroke support 374 through the second bearing 3792, and the connecting end 3711 passes through the central shaft hole of the second bearing 3792 so as to be connected to the second gear 376.

It can be understood that, in order to limit the axial movement of the screw rod 371 to increase the stability of the screw rod 371 and the arm driving device 36 when rotating, the transmission assembly 37 may further include two circlips 370. The connecting end 3711 of the screw rod 371 is provided with a clamping portion 3712 for clamping the clamping spring 370. The driving shaft 361 of the arm driving device 36 is provided with a clamping portion 3611 for the clamping spring 370 to be clamped. The two circlips 370 are respectively arranged at the

clamping portions

3712 and 3611, and after the assembly of the arm connector 30 is completed, they are located on the side of the second stroke support 374 close to the first stroke support 373 and abut against the second stroke support 374.

The first arm fixing member 33 and the second arm fixing member 35 are respectively connected to the transmission assembly 37. In this embodiment, the first arm fixing member 33 and the second arm fixing member 35 are slidably connected to the first sliding groove 3722 and the second sliding groove 3723 at both ends of the sliding plate 372, respectively.

In this embodiment, the first arm fixing member 33 is provided with a connecting hole 330 for the first connecting shaft 32 to pass through. The connecting hole 330 is opened along the thickness direction of the first arm fixing member 33. The first arm fixing member 33 includes a arm fixing end 331 and a sliding connection end 333 opposite to the arm fixing end 331. In this embodiment, the included angle between the sliding connection end 333 and the arm fixing end 331 is an obtuse angle.

The arm fixing end 331 is provided with an organic arm connecting hole 3311, and is configured to be fixedly connected to the other end of the arm 21 of the arm assembly 20 relative to the end connected to the bracket 22. The arm connecting hole 3311 is opened from the end of the arm fixing end 331 away from the sliding connecting end 333 to the inside of the arm fixing end 331. In this embodiment, the hole wall of the connecting hole 3311 is provided with a fixing hole. Correspondingly, the arm 21 is also provided with a fixing hole. The screw is matched with the fixing hole of the hole wall of the connecting hole 3311 and the fixing hole of the arm 21, so that The arm 21 is fixedly connected with the first arm fixing member 33. It can be understood that the present disclosure is not limited to the use of screws and screw holes to make the arm 21 and the first arm fixing member 33 fixedly connected, for example, welding, clamping, etc., as long as the arm 21 can be made It suffices to be fixedly connected with the first arm fixing member 33.

The sliding connection end 333 includes a first extension arm 3331 and a second extension arm 3333 that are arranged in parallel. The first extension arm 3331 and the second extension arm 3333 extend from the position of the connecting hole 330 in a direction away from the fixing end 331 of the arm. The vertical distance between the first extension arm 3331 and the second extension arm 3333 is greater than or equal to the thickness of the sliding plate 372. The first extension arm 3331 is provided with a shaft hole 3332 connected to the slider along its thickness direction. The second extension arm 3333 is provided with a shaft hole 3334 connected to the slider along its thickness direction. The shaft hole 3332 and the shaft hole 3334 are arranged coaxially. In this embodiment, the arm connecting member 30 further includes a first sliding block 381 arranged in the first sliding groove 3722. The first sliding block 381 is rotatably connected with the sliding connection end 333. In this embodiment, the first sliding block 381 is rotatably connected with the first extension arm 3331 and the second extension arm 3333. The first extension arm 3331 and the second extension arm 3333 define the first sliding block 381 in the first sliding groove 3722. The first sliding block 381 is provided with a shaft hole 3811. The shaft hole 3811 is connected with the shaft hole 3332 and the shaft hole 3334 by a rotating shaft.

In this embodiment, the second arm fixing member 35 is provided with a connecting hole 350 for the second connecting shaft 34 to pass through. The connecting hole 350 is opened along the thickness direction of the second arm fixing member 35. The second arm fixing member 35 includes a arm fixing end 351 and a sliding connection end 353 relative to the arm fixing end 351. In this embodiment, the included angle between the sliding connection end 353 and the arm fixed connection end 351 is an obtuse angle.

The arm fixing end 351 is provided with an organic arm connecting hole 3511, and is configured to be fixedly connected to the other end of the arm 21 of the other arm assembly 20 relative to the end connected to the bracket 22. The arm connecting hole 3511 is opened from the end of the arm fixing end 351 away from the sliding connecting end 353 to the inside of the arm fixing end 351. In this embodiment, the hole wall of the connecting hole 3511 is provided with a fixing hole. Correspondingly, the arm 21 is also provided with a fixing hole. The screw is matched with the fixing hole of the hole wall of the connecting hole 3511 and the fixing hole of the arm 21, so that The arm 21 is fixedly connected to the second arm fixing member 35. It can be understood that the present disclosure is not limited to the use of screws and screw holes to make the arm 21 and the second arm fixing member 35 fixedly connected, for example, welding, clamping, etc. can also be used, as long as the arm 21 can be made It is only required to be fixedly connected with the second arm fixing member 35.

The sliding connection end 353 includes a first extension arm 3531 and a second extension arm 3533 arranged in parallel. The first extension arm 3531 and the second extension arm 3533 extend from the position of the connecting hole 350 in a direction away from the fixed end 351 of the arm. The vertical distance between the first extension arm 3531 and the second extension arm 3533 is greater than or equal to the thickness of the sliding plate 372. The first extension arm 3531 is provided with a shaft hole 3532 connected to the slider along its thickness direction. The second extension arm 3533 is provided with a shaft hole 3534 connected to the slider along its thickness direction. The shaft hole 3532 and the shaft hole 3534 are arranged coaxially. In this embodiment, the arm connecting member 30 further includes a second sliding block 382 arranged in the second sliding groove 3723. The second sliding block 382 is rotatably connected with the sliding connection end 353. In this embodiment, the second sliding block 382 is rotatably connected with the first extension arm 3531 and the second extension arm 3533. The first extension arm 3531 and the second extension arm 3533 define the second sliding block 382 in the second sliding groove 3723. The second sliding block 382 is provided with a shaft hole 3821. The shaft hole 3821 is connected with the shaft hole 3532 and the shaft hole 3534 by a rotating shaft.

In the arm connecting member 30 provided in the present disclosure, when the arm driving device 36 drives the screw rod 371 to rotate, the screw rod 371 is threadedly connected with the sliding plate 372, and the opposite ends of the sliding plate 372 are caused by the first sliding rod 377 and the first sliding rod 377. The restriction of the second sliding rod 378 cannot follow the rotation of the screw rod 371, but converts the rotation into a movement along the axial direction of the screw rod 371. Since the opposite ends of the sliding plate 372 are respectively slidably connected with the sliding connection end 333 of the first arm fixing member 33 and the sliding connection end 353 of the second arm fixing member 35, the sliding plate 372 is slidably connected along the screw rod. The movement of 371 urges the first machine arm fixing part 33 and the second machine arm fixing part 35 to rotate in opposite directions around the first connecting shaft 32 and the second connecting shaft 34, respectively, so as to realize the fixing part with the first machine arm Folding and unfolding of the arm assembly 20 connected with 33 and the arm assembly connected with the second arm fixing member 35.

The arm connecting member 30 provided by the present disclosure can enable the first arm fixing member 33 and the second arm fixing member 35 respectively connected to the arm assembly 20 to rotate in reverse synchronously through the arm driving device 36, and to rotate in place After positioning and locking. The rotatable angle of the first arm fixing part 33 and the second arm fixing part 35 can be designed to be any angle between 0° and 180°, for example, 45°, 90°, 120°, etc. . The arm connector 30 provided by the present disclosure has the advantages of small space occupation, strong driving power, reliable positioning and locking, etc., and is suitable for the arm connection of various dual-axis, four-axis and multi-axis unmanned and manned aerial vehicles , And can make the connected arm assembly 20 can be stored and/or folded, reducing the space occupied by the arm assembly 20, in conjunction with the folding and unfolding design of the power assembly 10, can reduce the amount of the arm assembly 20 as much as possible space.

It is understandable that please refer to FIGS. 24 and 25 together. In other embodiments, opposite ends of the sliding plate 372 are connected to the first arm fixing member 33 and the second arm fixing member 35 by gears. At this time, the first sliding groove 3722 and the second sliding groove 3723 at the opposite ends of the sliding plate 372 can be omitted. Instead, the transmission assembly 37 includes a first rack 3726 and a second rack 3727 respectively connected to the opposite ends of the sliding plate 372. . The first rack 3726 includes a connecting end and a tooth end. The first rack is fixedly connected to one end of the sliding plate 372 through its connecting end. In this embodiment, the tooth structure of the tooth end of the first rack 3726 is arranged along a straight line perpendicular to the length direction of the sliding plate 372. The second rack 3727 has the same structure as the first rack 3726. Correspondingly, the second rack 3727 includes a connecting end and a tooth structure end. The second rack 3727 is fixedly connected to the other end of the sliding plate 372 through its connecting end. The tooth structure of the tooth end of the second rack 3727 is arranged along a straight line perpendicular to the length direction of the sliding plate 372. In this embodiment, the tooth structure of the first rack 3726 and the tooth structure of the second rack 3727 are arranged in parallel and facing opposite directions. Optionally, the first rack 3726 and the second rack 3727 can also be integrally formed with the sliding plate 372. Correspondingly, the sliding connection end 333 of the first arm fixing member 33 and the sliding connection end 353 of the second arm fixing member 35 can be omitted. Instead, the first arm fixing member 33 includes a first tooth joint 334 meshed with the first rack 3726. The first toothed portion 334 is disposed at an end of the first arm fixing member 33 away from the arm fixing end 331. The tooth structure of the first tooth connecting portion 334 is arranged in an arc along the width direction of the first arm fixing member 33, and the first tooth connecting portion 334 and the connecting hole 330 are arranged coaxially. The second arm fixing member 35 includes a second toothed portion 354 engaged with the second rack 3727. The second tooth connection portion 354 is disposed at an end of the second arm fixing member 35 away from the arm fixing end 351. The tooth structure of the second tooth connection part 354 is arranged in an arc along the width direction of the second arm fixing member 35, and the second tooth connection part 354 and the connecting hole 350 are arranged coaxially.

In the arm connecting member 30 provided in this embodiment, when the arm driving device 36 drives the screw rod 371 to rotate, the screw rod 371 is threadedly connected with the sliding plate 372, and the opposite ends of the sliding plate 372 are caused by the first sliding rod 377 and the sliding plate 372. The restriction of the second sliding rod 378 cannot follow the rotation of the screw rod 371, but converts the rotation into a movement along the axial direction of the screw rod 371. Since the opposite ends of the sliding plate 372 pass through the first rack 3726 and the second rack 3727, the first toothed portion 334 of the first arm fixing member 33 and the second toothed portion 334 of the second arm fixing member 35, respectively. The toothed portion 353 is connected, and the sliding plate 372 moves along the screw rod 371, which causes the first arm fixing member 33 and the second arm fixing member 35 to be synchronized in reverse directions around the first connecting shaft 32 and the second connecting shaft 34, respectively By rotating, the folding and unfolding of the arm assembly 20 connected with the first arm fixing member 33 and the arm assembly connected with the second arm fixing member 35 are realized.

It can be understood that in other embodiments, the sliding plate 372 can move along the first sliding rod 377 and the second sliding rod 378 through the cooperation of gears and racks. At this time, the threaded hole 3721 of the sliding plate 372, the screw rod 371, The first bearing 3791 and the second bearing 3792 can be omitted. The driving shaft 361 of the arm driving device 36 may be arranged perpendicular to the thickness direction of the sliding plate 372. The gear is fixedly connected with the driving shaft 361. The rack is fixedly connected to the sliding plate 372 and is arranged along the width direction of the sliding plate 372. The rack meshes with the gear, and the arm driving device 36 drives the rack meshed with the gear to move through the driving gear, and then drives the sliding plate 372 to move. Optionally, the rack, gear and arm driving device 36 may be arranged between the first sliding rod 377 and the second sliding rod 378.

It can be understood that in other embodiments, the first sliding block 381 and the second sliding block 382 may be replaced by deep groove ball bearings.

It can be understood that in other embodiments, the first sliding rod 377 and the second sliding rod 378 may be omitted. Or the design of one screw rod and two sliding rods in the foregoing embodiment can be replaced by two screw rods. Optionally, the two screw rods are arranged symmetrically with respect to the center line of the sliding plate 372 in the width direction. Correspondingly, the two screw rods are respectively provided with the driving mechanism of the charter arm driving device 36, the first gear 375 and the second gear 376 in the foregoing embodiment. The specific setting method can refer to the foregoing embodiment, and will not be repeated here.

Please refer to FIGS. 26 to 29 together. Another embodiment of the present disclosure provides an arm connecting member 30a configured to connect the arm assembly 20 to the fuselage of the drone.

Referring to FIG. 26, in this embodiment, the arm connecting member 30a includes a body fixing member 31a and a first arm fixing member 33a and a second arm fixing member connected to opposite ends of the arm fixing member 31a 35a. The first arm fixing member 33a and the second arm fixing member 35a are respectively fixedly connected to the arm 21 of one arm assembly 20.

The fuselage fixing member 31a is fixedly connected with the fuselage of the drone. In this embodiment, the fuselage fixing member 31a includes an upper pressing plate 311a and a lower pressing plate 313a arranged in parallel and spaced apart. The upper pressing plate 311a and the lower pressing plate 313a are respectively fixedly connected to the fuselage of the drone.

Please refer to FIG. 26, FIG. 27, and FIG. 28 together. The upper pressing plate 311a is provided with two axial connection holes 3111a and two first connection holes 3113a. The shaft connecting hole 3111a and the first connecting hole 3113a are both opened along the thickness direction of the upper pressing plate 311a. In this embodiment, the two shaft connecting holes 3111a and the two connecting holes 3113a are both through holes. The two shaft contact holes 3111a are respectively located at opposite ends of the upper pressing plate 311a. The two first connecting holes 3113a are located between the two shaft connecting holes 3111a.

Optionally, in order to increase the depth of the hole and thereby increase the connection stability based on the shaft connection hole 3111a and the first connection hole 3113a, in this embodiment, the upper pressing plate 311a may include a side from the upper pressing plate 311a close to the lower pressing plate 313a The convex portion 3112a protrudes outward, and the shaft connection hole 3111a and the first connecting hole 3113a are both opened from the side of the convex portion 3112a close to the lower pressing plate 313a inside the upper pressing plate 311a.

The lower pressing plate 313a is provided with two shaft connecting holes 3131a and two third connecting holes 3133a. The two shaft contact holes 3131a are respectively located at opposite ends of the lower pressing plate 313a. The two third connecting holes 3133a are located between the two shaft connecting holes 3131a. In this embodiment, the shaft connecting hole 3131a and the third connecting hole 3133a are blind holes opened inside the lower pressing plate 313a from the side of the lower pressing plate 313a close to the upper pressing plate 311a.

Correspondingly, in order to increase the hole depth and thereby increase the connection stability based on the shaft connection hole 3131a and the third connection hole 3133a, in this embodiment, the lower pressing plate 313a may include a side from the lower pressing plate 313a close to the upper pressing plate 311a. A convex portion 3132a is protruding outward, and the

shaft connection holes

3131a and 3133a are both opened from the side of the convex portion 3132a close to the upper pressing plate 311a to the inside of the downward pressing plate 313a.

After the assembly of the arm connecting member 30a is completed, the shaft connection hole 3131a is opposite to the shaft connection hole 3111a and is arranged coaxially, and the third connection hole is opposite to the first connection hole 3113a and is arranged coaxially.

It can be understood that the upper pressing plate 311a and the lower pressing plate 313a are also provided with connection holes (not shown) configured to be fixedly connected to the fuselage of the drone.

In this embodiment, the arm connecting member 30a further includes a first connecting shaft 32a and a second connecting shaft 34a. The first connecting shaft 32a and the second connecting shaft 34a are respectively connected to opposite ends of the body fixing member 31a. The first arm fixing member 33a and the fuselage fixing member 31a are rotatably connected by a first connecting shaft 32a. The second arm fixing member 35a and the fuselage fixing member 31a are rotatably connected by a second connecting shaft 34a. Both ends of the first connecting shaft 32a are respectively connected with the shaft hole 3111a of the upper pressing plate 311a and the shaft hole 3131a of the lower pressing plate 313a. Two ends of the second connecting shaft 34a are respectively connected with the shaft hole 3111a of the upper pressing plate 311a and the shaft hole 3131a of the lower pressing plate 313a.

It can be understood that, in order to avoid shaking of the first connecting shaft 32a and the second connecting shaft 34a, the body fixing member 31a may further include an end cover 315a. In this embodiment, the end cover 315a is disposed on the side of the upper pressing plate 311a away from the lower pressing plate 313a, and is fixedly connected to the upper pressing plate 311a, and is configured to limit the first connecting shaft 32a and the second connecting shaft 34a between the end cover 315a and the lower pressing plate 313a. Between the pressure plate 313a. Optionally, the end cover 315a and the upper pressing plate 311a can be fixedly connected by the fit of the screw hole and the screw or the fit of the buckle and the slot.

Please refer to FIGS. 26 and 28 together. In this embodiment, the arm connecting member 30a further includes an arm driving device 36a, and the arm driving device 36a is connected to the first arm fixing member 33a and the arm driving device The transmission assembly 37a between 36a and the second arm fixing member 35a. The arm driving device 36a, the transmission assembly 37a, the first arm fixing member 33a and the second arm fixing member 35a are all arranged between the upper pressing plate 311a and the lower pressing plate 313a. In this embodiment, the first arm fixing member 33a and the second arm fixing member 35a correspond to an arm driving device 36a and a rotating assembly 37a, respectively. The arm driving device 36a corresponding to the first arm fixing member 33a drives the first arm fixing member 33a to rotate by driving the corresponding transmission assembly 37a, thereby driving the arm connected to the first arm fixing member 33a The assembly 20 realizes rotating expansion or folding. The arm driving device 36a corresponding to the second arm fixing member 35a drives the second arm fixing member 33a to rotate by driving the corresponding transmission assembly 37a, thereby driving the arm connected to the second arm fixing member 35a The assembly 20 realizes rotating expansion or folding. In this embodiment, the arm driving device 36a corresponding to the first arm fixing member 33a and the arm driving device 36a corresponding to the second arm fixing member 35a are synchronous motors with opposite rotation directions.

In this embodiment, the arm driving device 36a is fixed on the lower pressing plate 313a. The arm driving device 36a includes a motor 361a and a first transmission wheel 363a. The motor 361a is connected to the first transmission wheel 363a and is configured to drive the first transmission wheel 363a to rotate.

In this embodiment, the arm driving device 36a may further include a motor mounting seat 362a. The motor mounting seat 362a is configured to fix the motor 361a on the lower pressing plate 313a and support the first transmission wheel 363a.

The motor mounting seat 362a is roughly in the shape of an arch bridge, and includes a mounting platform 3621a, a first side plate 3622a and a second side plate (not shown). The first side plate 3622a and the second side plate are respectively connected to both ends of the installation platform 3621a, and are configured to support the installation platform 3621a. The first side plate 3622a, the installation platform 3621a and the second side plate enclose a bridge-like accommodation space.

In this embodiment, the motor 361a is accommodated in the bridge-shaped accommodation space, and is fixed on the lower plate 313a through the motor mounting seat 362a. The rotating shaft of the motor 361a passes through the side of the mounting platform 3621a away from the lower pressing plate 313a, and is connected to the first transmission wheel 363a to drive the first transmission wheel 363a to rotate.

The first transmission wheel 363a is arranged on the installation platform 3621a, and the axle of the first transmission wheel 363a is perpendicular to the installation platform 3621a. Optionally, the first side plate 3622a and the second side plate are vertically connected to both ends of the installation platform 3621a. It can be understood that in other embodiments, the first side plate 3622a and the second side plate may also be connected to the two ends of the mounting platform 3621a at other angles (for example, obtuse angles) to the mounting platform 3621a, and the present disclosure is not limited thereto.

In this embodiment, the motor mounting seat 362a may further include a first lug 3624a and a second lug (not shown). The first lug 3624a and the second lug are respectively connected to the first side plate 3622a and the end of the second side plate away from the mounting platform 3621a, and are configured to fix the motor mounting seat 362a. In this embodiment, the first lug 3624a and the second lug can be fixedly connected to the lower pressing plate 313a by a screw and a screw hole or a buckle and a clamping groove, so as to fix the motor mounting seat 362a on the lower pressing plate 313a. on.

Optionally, the first lug 3624a and the second lug are both arranged in parallel with the mounting platform 3621a, and the first lug 3624a and the second lug are located on the same plane. Optionally, the first lug 3624a and the second lug extend away from each other in opposite directions.

The transmission assembly 37a is in transmission connection with the arm driving device 36a. In this embodiment, the transmission assembly 37a is in transmission connection with the first transmission wheel 363a.

The transmission assembly 37a may be a dial assembly. The transmission assembly 37a includes a shift wheel 371a and a second transmission wheel 373a fixedly connected to the shift wheel 371a. In this embodiment, the transmission assembly 37a further includes a dial shaft 375a. The dial 371a is fixedly connected with the dial shaft 375a, the second transmission wheel 373a is fixedly connected with the dial shaft 375a, and the second transmission wheel 373a is fixedly connected with the dial 371a through the dial shaft 375a. In this embodiment, the shift lever 3713a of the shift wheel 371a extends in a direction away from the second transmission wheel 373a, and is spaced from the second transmission wheel 373a in the axial direction of the shift wheel shaft 375a, so as to prevent the arm driving device 36a from driving the second transmission wheel 373a. When the second transmission wheel 373a drives the dial wheel 371a to rotate, the arm driving device 36a blocks the rotation of the dial wheel 371a.

In this embodiment, the dial 371a and the dial shaft 375a are integrally formed. The dial 371a includes a main body 3711a and a dial 3713a protruding from the outer edge of the main body 3711a. The body 3711a may be arranged coaxially with the dial shaft 375a. In this embodiment, the number of the shift lever 3713a is one. The extension direction of the shift lever 3713a is parallel to the axial direction of the shift wheel 371a. In this embodiment, the shift lever 3713a protrudes outward from the outer edge of the body 3711a along the radial direction of the body 3711a, and the extension direction of the shift lever 3713a is parallel to the axial direction of the shift wheel 371a.

In this embodiment, the second transmission wheel 373a is sleeved on the dial shaft 375a, and the second transmission wheel 373a is drivingly connected with the first transmission wheel 363a. The radius of the second transmission wheel 373a may be, for example, larger than the radius of the first transmission wheel 363a and smaller than the distance from the center of the body 3711a of the dial wheel 371a to the distal end of the shift lever 3713a. In this embodiment, both the first transmission wheel 363a and the second transmission wheel 373a are gears. The second transmission wheel 373a meshes with the first transmission wheel 363a. It can be understood that in other embodiments, the second transmission wheel 373a may also be integrally formed with the dial shaft 375a, which is not limited in the present disclosure.

In this embodiment, the opposite ends of the wheel shaft 375a are respectively disposed in the first connecting hole 3113a and the third connecting hole 3133a, and the opposite ends of the wheel shaft 375a are connected to the first connecting hole 3113a and the third connecting hole 3133a, respectively. Rotatingly connected. In order to facilitate the rotation of the dial shaft 375a, the arm connecting member 30a may further include a bearing (not shown). The bearing may be arranged in the first connecting hole 3113a and/or the third connecting hole 3133a, and located between the hole wall of the dial shaft 375a and the first connecting hole 3113a and/or the hole wall of the dial shaft 375a and the third connecting hole 3133a .

The first arm fixing member 33a is fixedly connected to one end of the arm 21 of the arm assembly 20, and is rotatably connected to the body fixing member 31a through the first connecting shaft 32a. The first arm fixing member 33a is drivingly connected with the dial wheel 371a of the corresponding transmission assembly 37a. The second arm fixing member 35a is fixedly connected to one end of the arm 21 of the other arm assembly 20, and is rotatably connected to the body fixing member 31a through the second connecting shaft 34a. The second arm fixing member 35a is drivingly connected with the dial wheel 371a of the corresponding transmission assembly 37a. In this embodiment, the first arm fixing member 33a and the arm 21 of the arm assembly 20 fixedly connected to it are integrally formed. The second arm fixing member 35a and the arm 21 of the arm assembly 20 fixedly connected therewith are integrally formed. It can be understood that in other embodiments, the arm fixing member can be fixedly connected to one end of the arm 21 of the corresponding arm assembly 20 through the cooperation of the screw hole and the screw or the cooperation of the buckle and the slot. This is not limited.

The first arm fixing member 33a is a sheave. In this embodiment, the first arm fixing member 33a includes the first arm fixing member 33a from the outer edge of the first arm fixing member 33a to the inside of the first arm fixing member 33a and extending along the radial direction of the first arm fixing member 33a. The groove 331a, and at least two arc-shaped portions 333a provided along the outer edge of the first arm fixing member 33a. The channel 331a is located between two adjacent arc-shaped portions 333a. The radius of the circle where the arc-shaped portion 333a is located is the same as the radius of the body 3711a of the dial 371a of the corresponding transmission assembly 37a. In this embodiment, the number of grooves 331a is two, and the number of corresponding arc-shaped portions 333a is three. The first arm fixing member 33a realizes the transmission connection with the dial 371a of the transmission assembly 37a through the cooperation of the channel 331a and the shift lever 3713a of the corresponding transmission assembly 37a.

The second arm fixing member 35a is also a sheave and has the same structure as the first arm fixing member 33a. Correspondingly, the second arm fixing member 35a includes a groove extending from the outer edge of the second arm fixing member 35a to the inside of the second arm fixing member 35a along the radial direction of the second arm fixing member 35a Road 351a, and at least two arc-shaped portions 353a provided along the outer edge of the second arm fixing member 35a. The channel 351a is located between two adjacent arc-shaped portions 353a. The radius of the circle where the arc-shaped portion 353a is located is the same as the radius of the body 3711a of the dial 371a of the corresponding transmission assembly 37a. In this embodiment, the number of grooves 351a is two, and the number of corresponding arc-shaped portions 353a is three. The second arm fixing member 35a realizes the transmission connection with the dial 371a of the transmission assembly 37a through the cooperation of the channel 351a and the shift lever 3713a of the corresponding transmission assembly 37a.

It can be understood that, in order to facilitate the rotation of the first arm fixing member 33a and the second arm fixing member 35a, the first arm fixing member 33a and the first connecting shaft 32a can also be fixed between the first arm fixing member 33a and the first connecting shaft 32a. A bearing is arranged between the connecting piece 35a and the second connecting shaft 34a.

When working, the arm driving device 36a drives the first transmission wheel 363a to rotate; the first transmission wheel 363a drives the second transmission wheel 373a to rotate; because the second transmission wheel 373a is fixedly connected with the dial shaft 375a, and the dial 371a and the dial shaft 375a Fixed connection, the second transmission wheel 373a drives the dial shaft 375a to rotate, and then drives the dial 371a to rotate; because the dial 371a and the arm fixing part (including the first arm fixing part 33a and the second arm fixing part 35a ) Drive connection, and the arm fixing part is fixedly connected with the arm 21 of the arm assembly 20, the dial 371a rotates to drive the arm fixing part to rotate, and then the drive arm assembly 20 rotates to realize the rotation and deployment of the arm assembly And rotate and fold.

Referring to Figure 29, the following takes the cooperation of the first arm fixing member 33a and the corresponding transmission assembly 37a of the dial wheel 371a as an example, the cooperation between the dial wheel 371a and the arm fixing member to realize the process of rotation and deployment is performed Introduction.

In the initial state (corresponding to state 1 in FIG. 29), the arm assembly 20 connected to the first arm fixing member 33a is in a folded state. At this time, the outer edge of the body 3711a of the dial wheel 371a is coupled with the arc-shaped portion 333a on the left side of the first arm fixing member 33a, and the lever 3713a of the dial wheel 371a is set away from the arm fixing member 33a. When the arm driving device 36a drives the first transmission wheel 363a to drive the second transmission wheel 373a to rotate in the counterclockwise direction, the lever 3713a of the dial 371a rotates to the left arc 333a of the first arm fixing member 33a and the middle At the notch of the channel 331a (for ease of description, hereinafter referred to as the first channel) between the arc-shaped portions 333a (corresponding to state 2 in FIG. 29). When the motor 361a continues to drive the first transmission wheel 363a to drive the second transmission wheel 373a to rotate, and then to drive the dial 371a to rotate counterclockwise, the dial 3713a slides in along the first groove and passes through the groove with the first groove. The interaction of the walls drives the first arm fixing member 33a to rotate in a clockwise direction (corresponding to state 3 in FIG. 29). The shift lever 3713a gradually slides with the rotation of the shift wheel 371a until the first channel is close to the axis of the first arm fixing member 33a. At this time, if the shift wheel 371a is driven by the second transmission wheel 373a to continue in the counterclockwise direction Rotating, the shift lever 3713a will slide back along the first channel to the notch of the first channel in the direction away from the axis of the first arm fixing member 33a (corresponding to state 4 in FIG. 29).

When the shift lever slides back to the notch of the first channel, if the shift wheel 371a is driven by the second transmission wheel 373a to continue to rotate in the counterclockwise direction, the shift lever 3713a reaches the middle arc part 333a and the right side of the sheave wheel. The notch of the channel 331a (for ease of description, hereinafter referred to as the second channel) between the arc-shaped portions 333a. At this time, if the dial 371a is driven by the second transmission wheel 373a to continue to rotate in the counterclockwise direction, the shift lever 3713a will cooperate with the second channel to repeat the transmission process of the shift lever 3713a and the first channel, thereby making the first channel The arm assembly connected to the arm fixing member 33a reaches the unfolded state. The process in which the arm assembly connected to the first arm fixing member 33a is converted from the unfolded state to the folded state is opposite to the above process, and will not be repeated here.

The mating process of the second arm fixing member 35a and the dial wheel 371a of the corresponding transmission assembly 37a is the same as the above process, and will not be repeated here.

It can be understood that the angle range that the arm fixing member (the first arm fixing member 33a and the second arm fixing member 33a and the second arm 35a can be used for reference) and the number of the lever 3713a of the dial wheel 371a, the channel on the arm fixing member The number of and the included angle between the channels are related, and those skilled in the art can design according to their needs, which is not limited in the present disclosure.

It can be understood that in other embodiments, the first arm fixing member 33a and the first connecting shaft 32a may be integrally formed. The second arm fixing member 35a and the second connecting shaft 34a may be integrally formed. At this time, the arm fixing member and the connecting shaft rotate together with respect to the shaft connecting hole.

The arm connecting member provided by the embodiment of the present disclosure drives the transmission assembly 37a to rotate through the arm driving device 36a, thereby driving the first arm fixing member 33a and the arm assembly 20 fixedly connected to the first arm fixing member 33a , Or the second arm fixing member 35a and the arm assembly 20 fixedly connected to the second arm fixing member 35a rotate, so that the arm assembly 20 is expanded or collapsed, thereby making the arm assembly 20 in use Unfold and fold up when not in use to facilitate the storage of the drone.

Referring to FIG. 30, another embodiment of the present disclosure provides an arm connecting member 30b configured to connect the arm assembly 20 to the fuselage of the drone.

In this embodiment, the arm connecting member 30b includes a body fixing member 31b and an arm fixing member 33b connected to the body fixing member 31b.

The fuselage fixing member 31b is fixedly connected with the fuselage of the drone. In this embodiment, the body fixing member 31b includes an upper pressing plate 311b and a lower pressing plate 313b arranged in parallel and spaced apart, and a mounting plate 312b perpendicularly connected to the upper pressing plate 311b and the lower pressing plate 313b. The fuselage fixing member 31b is fixedly connected to the fuselage of the drone through the mounting plate 312b.

The upper pressing plate 311b is provided with a shaft connection hole (not shown in the figure) and a first connection hole (not shown in the figure). Both the shaft connection hole and the first connection hole are opened along the thickness direction of the upper pressing plate 311b. In this embodiment, the shaft connection hole and the first connection hole are both through holes, and the shaft connection hole is closer to the mounting plate 312b than the first connection hole.

The lower pressing plate 313b includes a first mounting portion 3131b and a second mounting portion 3133b arranged in parallel, and a connecting portion 3132b connected between the first mounting portion 3131b and the second mounting portion 3133b. The first mounting portion 3131b, the connecting portion 3132b and the second mounting portion 3133b jointly form a stepped structure. The first mounting portion 3131b is provided with a third connecting hole (not shown in the figure). The third connecting hole is coaxially arranged with the first connecting hole 3113b, and the third connecting hole is a through hole. The second mounting portion 3133b is provided with an axial connection hole (not shown) that is coaxially arranged with the axial connection hole of the upper pressing plate 311b. In this embodiment, the shaft hole opened in the second mounting portion 3133b is a blind hole with an opening facing the upper pressing plate 311b.

In this embodiment, the arm connecting member 30b further includes a connecting shaft (not shown in the figure). The arm fixing member 33b is rotatably connected with the fuselage fixing member 31b through a connecting shaft. In this embodiment, the two ends of the connecting shaft are respectively penetrated in the shaft connection hole of the upper pressing plate 311b and the shaft connection hole of the second mounting portion 3133b.

It can be understood that, in order to avoid shaking of the connecting shaft, the body fixing member 31b may further include an end cover 315b. In this embodiment, the end cover 315b is disposed on the side of the upper pressing plate 311b away from the lower pressing plate 313b, and is fixedly connected to the upper pressing plate 311b, and is configured to limit the connecting shaft between the end cover 315b and the second mounting portion 3133b of the lower pressing plate 313b. between. Optionally, the end cover 315b and the upper pressing plate 311b can be fixedly connected by the fit of the screw hole and the screw or the fit of the buckle and the slot.

In this embodiment, the arm connecting member 30b further includes an arm driving device 36b, and a transmission assembly 37b connected between the arm driving device 36a and the arm fixing member 33b. The arm driving device 36b drives the transmission assembly 37b to rotate the motor arm fixing member 33b, so as to drive the arm assembly 20 connected with the arm fixing member 33b to rotate and expand or close.

The arm driving device 36b is arranged in the space enclosed by the first mounting portion 3131b, the connecting portion 3132b, and the mounting plate 312b, and the arm driving device 36b, the mounting plate 312b and/or the first mounting portion 3131b and/or the connecting portion 3132b fixed connection. In this embodiment, the arm driving device 36b is a motor, and its rotating shaft passes through the third connecting hole of the first mounting portion 3131b to between the first mounting portion 3131b and the upper pressing plate 311b.

The transmission assembly 37b is arranged between the upper pressing plate 311b and the first mounting portion 3131b. In this embodiment, the transmission assembly 37b includes a dial 371b and a dial shaft (not shown). The wheel shaft is fixedly connected with the rotating shaft of the arm driving device 36b. The dial 371b is fixedly connected to the dial shaft. The arm driving device 36b drives the rotating shaft to rotate, drives the dial shaft to rotate, and then drives the dial 371b to rotate. It can be understood that the dial 371b can be integrally formed with the dial shaft.

In this embodiment, the dial 371b includes a main body 3711b and a dial 3713b protruding from the outer edge of the main body 3711b. The body 3711b may be arranged coaxially with the dial shaft 375a. In this embodiment, the number of the shift lever 3713b is one. The extension direction of the shift lever 3713b is parallel to the axial direction of the shift wheel 371b. In this embodiment, the shift lever 3713b protrudes outward from the outer edge of the body 3711b along the radial direction of the body 3711b, and the extension direction of the shift lever 3713b is parallel to the axial direction of the shift wheel 371b.

The opposite ends of the wheel shaft are respectively arranged in the first connection hole and the third connection hole, and the opposite ends of the wheel shaft are respectively rotatably connected with the first connection hole and the third connection hole. In order to facilitate the rotation of the dial shaft, the arm connecting member 30a may also include a bearing (not shown). The bearing may be arranged in the first connecting hole and/or the third connecting hole, and between the hole wall of the dial shaft and the first connecting hole and/or the hole wall of the dial shaft and the third connecting hole.

The arm fixing member 33b is fixedly connected to one end of the arm 21 of the arm assembly 20, and is rotatably connected to the body fixing member 31b through a connecting shaft. The arm fixing member 33b is drivingly connected with the dial wheel 371b of the corresponding transmission assembly 37b. In this embodiment, the arm fixing member 33b and the arm 21 of the arm assembly 20 fixedly connected thereto are integrally formed. It can be understood that in other embodiments, the arm fixing member 33b can be fixedly connected to one end of the arm 21 of the arm assembly 20 through the cooperation of the screw hole and the screw or the cooperation of the buckle and the slot. Not limited.

In this embodiment, the arm fixing member 33b is a sheave. In this embodiment, the arm fixing member 33b includes a channel 331b opened along the radial direction of the arm fixing member 33b from the outer edge of the arm fixing member 33b to the inside of the arm fixing member 33b, and along the machine arm fixing member 33b. At least two arc-shaped portions 333b are provided on the outer edge of the arm fixing member 33b. The channel 331b is located between two adjacent arc-shaped portions 333b. The radius of the circle where the arc-shaped portion 333b is located is the same as the radius of the body 3711b of the dial 371b of the transmission assembly 37b. In this embodiment, the number of grooves 331b is two, and the number of corresponding arc-shaped portions 333a is three. The arm fixing member 33b realizes the transmission connection with the dial 371b of the transmission assembly 37b through the cooperation of the channel 331b and the shift lever 3713b of the transmission assembly 37b.

It can be understood that, in order to facilitate the rotation of the arm fixing member 33b, a bearing may also be provided between the arm fixing member 33b and the connecting shaft.

When working, the arm drive device 36b drives its shaft to drive the dial shaft to rotate, and then drives the dial 371b to rotate; because the dial 371b is in transmission connection with the arm fixing part 33b, and the arm fixing part is connected to the arm assembly 20. The arm 21 is fixedly connected, the dial wheel 371b rotates and the motor arm fixing member 33b rotates, and then the motor arm assembly 20 rotates, so as to realize the rotation expansion and rotation folding of the arm assembly.

For the specific mating process of the dial 371b and the arm fixing member 33b, reference may be made to the foregoing embodiment, which will not be repeated here.

Referring to FIG. 31, yet another embodiment of the present disclosure further provides an arm connecting member 30c, which is configured to connect the arm assembly 20 to the fuselage of the drone.

In this embodiment, the arm connecting member 30c includes a body fixing member 31c and a first arm fixing member 33c and a second arm fixing member 35c connected to opposite ends of the arm fixing member 31c. The first arm fixing member 33c and the second arm fixing member 35c are fixedly connected to the arm 21 of one arm assembly 20, respectively.

The fuselage fixing member 31c is fixedly connected with the fuselage of the drone. In this embodiment, the body fixing member 31c includes an upper pressing plate 311c and a lower pressing plate 313c arranged in parallel and spaced apart. The upper pressing plate 311c and the lower pressing plate 313c are respectively fixedly connected to the fuselage of the drone. In this embodiment, the upper pressing plate 311c is provided with two axial connection holes 3111c, two first connection holes 3113c, and two second connection holes 3115c. The shaft connecting hole 3111c, the first connecting hole 3113c and the second connecting hole 3115c are all opened along the thickness direction of the upper pressing plate 311c. The two shaft contact holes 3111c are respectively located at opposite ends of the upper pressing plate 311c. The two first connecting holes 3113c are located between the two shaft connecting holes 3111c. The two second connecting holes 3115c are located between the two first connecting holes 3113c. The lower pressing plate 313c is provided with two shaft connection holes (not shown in the figure), two third connection holes (not shown in the figure) and two fourth connection holes (not shown in the figure). The two shaft connection holes are respectively located at opposite ends of the lower pressing plate 313c. The two third connecting holes are located between the two shaft connecting holes. The two fourth connecting holes are located between the two third connecting holes. After the assembly of the arm connector 30c is completed, the shaft connection hole of the lower pressing plate 313c is opposite and coaxially arranged with the shaft connection hole 3111c of the upper pressing plate 311c, the third connection hole is opposite to the first connection hole 3113c and is arranged coaxially, and the fourth The connecting hole is opposite to the second connecting hole 3115c and is arranged coaxially. In this embodiment, the surface of the lower pressing plate 313c close to the upper pressing plate 311c is convexly provided with a bump 3132c. The protrusion 3132c is configured to provide a lever for adjusting the tension of the transmission belt and the pulley.

It can be understood that the upper pressing plate 311c and the lower pressing plate 313c are also provided with connecting holes configured to be fixedly connected to the fuselage of the drone. The fuselage fixing member 31c may further include a plurality of auxiliary support members 315c, which are configured to support the lower pressing plate 313c.

In this embodiment, the arm connecting member 30c further includes a first connecting shaft 32c and a second connecting shaft 34c. The first connecting shaft 32c and the second connecting shaft 34c are respectively connected to opposite ends of the body fixing member 31c. The first arm fixing member 33c and the fuselage fixing member 31c are rotatably connected by a first connecting shaft 32c. The second arm fixing member 35c and the fuselage fixing member 31 are rotatably connected by a second connecting shaft 34c. Two ends of the first connecting shaft 32c are respectively connected to the shaft hole 3111c of the upper pressing plate 311c and the shaft hole 313c of the lower pressing plate 313c. Two ends of the second connecting shaft 34c are respectively connected to the shaft hole 3111c of the upper pressing plate 311c and the shaft hole 313c of the lower pressing plate 313c. It can be understood that, in order to avoid shaking of the first connecting shaft 32c and the second connecting shaft 34c, bearing end caps may be provided at the shaft connection holes 3111c of the upper pressure plate 311c and the shaft connection holes of the lower pressure plate 313c.

In this embodiment, the arm connecting member 30c further includes an arm driving device 36c, and a transmission connected between the arm driving device 36c and the first arm fixing member 33c and the second arm fixing member 35c Component 37c. The arm driving device 36c, the transmission assembly 37c, the first arm fixing member 33c and the second arm fixing member 35c are all arranged between the upper pressing plate 311c and the lower pressing plate 313c. In this embodiment, the first arm fixing member 33c and the second arm fixing member 35c respectively correspond to an arm driving device 36c and a rotating assembly 37c. The arm driving device 36c corresponding to the first arm fixing member 33c drives the first arm fixing member 33c to rotate by driving the corresponding transmission assembly 37c, thereby driving the arm connected to the first arm fixing member 33c The assembly 20 realizes rotating expansion or folding. The arm driving device 36c corresponding to the second arm fixing member 35c drives the second arm fixing member 33c to rotate by driving the corresponding transmission assembly 37c, thereby driving the arm connected to the second arm fixing member 35c The assembly 20 realizes rotating expansion or folding. In this embodiment, the arm driving device 36c corresponding to the first arm fixing member 33c and the arm driving device 36c corresponding to the second arm fixing member 35c are synchronous motors with opposite rotation directions.

In this embodiment, the arm driving device 36c is fixed on the lower pressing plate 313c. The arm driving device 36c includes a motor 361c and a first transmission wheel 363c. The motor 361c is connected to the first transmission wheel 363c and is configured to drive the first transmission wheel 363c to rotate.

In this embodiment, the arm driving device 36c may further include a motor mounting seat 362c. The motor mount 362c is configured to support the motor 361c and the first transmission wheel 363c. The motor mounting seat 362c is roughly in the shape of an arch bridge, and includes a mounting platform 3621c, a first side plate 3622c, and a second side plate 3623c. The first side plate 3622c and the second side plate 3623c are respectively connected to both ends of the installation platform 3621c, and are configured to support the installation platform 3621c. The first side plate 3622c, the installation platform 3621c and the second side plate 3623c enclose a bridge-like accommodation space.

In this embodiment, the motor 361c is installed on the installation platform 3621c. The end of the motor 361c away from the installation platform is inserted through the first connecting hole 3113c. The first transmission wheel 363c is arranged in the bridge-shaped receiving space, and the axle of the first transmission wheel 363c is perpendicular to the installation platform 3621c. The drive shaft of the motor 361c passes through the mounting platform 3621c and is connected to the first transmission wheel 363c, and passes through the third connecting hole. Optionally, the first side plate 3622c and the second side plate 3623c are vertically connected to both ends of the installation platform 3621c. It can be understood that in other embodiments, the first side plate 3622c and the second side plate 3623c can also be connected to the mounting platform 3621c at other angles (for example, obtuse angles) at both ends of the mounting platform 3621c, and the present disclosure is not limited to this. .

In this embodiment, the motor mounting seat 362c may further include a first lug 3624c and a second lug 3625c. The first lug 3624c and the second lug 3625c are respectively connected to the end of the first side plate 3622c and the second side plate 3623c away from the mounting platform 3621c, and are configured to fix the motor mounting seat 362c. Optionally, the first lug 3624c and the second lug 3625c are both arranged in parallel with the mounting platform 3621c, and the first lug 3624c and the second lug 3625c are located on the same plane. Optionally, the first lug 3624c and the second lug 3625c extend away from each other in opposite directions. In this embodiment, the first lug 3624c is provided with an elongated first adjusting groove 3626c. The second lug 3625c is provided with an elongated second adjusting groove (not shown in the figure). The second adjusting groove and the first adjusting groove 3626c are parallel to each other and parallel to the first side plate 3622c and the second side plate 3623c. The first adjusting groove 3626c and the second adjusting groove are configured to cooperate with the fixing bolt (the fixing bolt is configured to fix the motor mounting seat 362c) to adjust the tension of the transmission belt and the pulley when the first transmission wheel 363c is a pulley. In this embodiment, a first abutting plate 3628c is protrudingly provided at one side edge of the first lug 3624c. Optionally, the first abutment plate 3628c is perpendicular to the first lug 3624c and the first side plate 3622c. A second abutment plate (not shown in the figure) protrudes from one side edge of the second lug 3625c. Optionally, the second abutment plate is perpendicular to the second lug 3625c and the second side plate 3623c. The first abutment plate 3628c and the second abutment plate are located on the same side, and are configured to cooperate with the abutment rod. After the tension of the transmission belt and the pulley is adjusted to a proper tension through the cooperation of the adjusting groove and the fixing bolt, The tension of the transmission belt and the pulley is maintained at the proper tension.

After the assembly of the arm connecting member 30c is completed, the first abutment plate 3628c and the second abutment plate of the motor mounting seat 362c are respectively disposed opposite to the protrusion 3132c. The abutment rod installed on the protrusion 3132c is configured to adjust the tension of the transmission belt and the pulley to a proper degree of tension through the cooperation of the adjusting groove and the fixing bolt, and then cooperate with the abutment plate to make the transmission belt and the pulley tension. The degree of tightness is maintained at the appropriate degree of tension.

The transmission assembly 37c is in transmission connection with the arm driving device 36c. In this embodiment, the transmission assembly 37c is in transmission connection with the first transmission wheel 363c.

In this embodiment, the transmission assembly 37c is a dial assembly. The transmission assembly 37c includes a dial 371c and a second transmission wheel 373c fixedly connected to the dial 371c. In this embodiment, the dial 371c and the second transmission wheel 373c are fixedly connected by a fixing screw. It can be understood that in other embodiments, the dial 371c may also be integrally formed with the second transmission wheel 373c, which is not limited in the present disclosure.

The dial 371c includes a main body 3711c and a dial 3713c protruding from the outer edge of the main body 3711c. The main body 3711c is provided with a screw hole configured to cooperate with a fixing screw to realize a fixed connection with the second transmission wheel 373c.

In this embodiment, the dial 371c includes two dials 3713c spaced apart along the outer edge of the body 3711c. The extension direction of the shift lever 3713c is parallel to the axial direction of the shift wheel 371c. In this embodiment, the shift lever 3713c protrudes outward from the outer edge of the main body 3711c along the radial direction of the main body 3711c, and the extension direction of the shift lever is parallel to the axial direction of the shift wheel 371c. Optionally, the included angle formed by the line connecting the two shift levers 3713c and the axis of the shift wheel 371c is 120°.

The second transmission wheel 373c is in transmission connection with the first transmission wheel 363c, and is fixedly connected with the dial 371c. The diameter of the second transmission wheel 373c may be, for example, greater than the diameter of the first transmission wheel 363c, and less than or equal to the diameter of the dial 371c (the body 3711c). In this embodiment, both the first transmission wheel 363c and the second transmission wheel 373c are pulleys. The first transmission wheel 363c and the second transmission wheel 373c are connected by a transmission belt. Through the belt transmission, a large center distance transmission can be realized, so that the arm connecting piece 30c has impact resistance.

It can be understood that, in other embodiments, the first transmission wheel 363c and the second transmission wheel 373c may also be gears, and the first transmission wheel 363c meshes with the second transmission wheel 373c. This disclosure does not limit this, as long as the first transmission wheel 373c The wheel 363c can drive the second transmission wheel 373c to rotate under the drive of the arm driving device 361c, and then drive the dial wheel 371c to rotate.

In this embodiment, the transmission assembly 37c may further include a dial shaft 375c. The opposite ends of the wheel shaft 375c are respectively disposed in the second connecting hole 3115c and the fourth connecting hole. In this embodiment, the opposite ends of the wheel shaft 375c are respectively fixedly connected to the second connecting hole 3115c and the fourth connecting hole. The dial 371c and the second transmission wheel 373c are sleeved on the dial shaft 375c, and are connected to the upper pressing plate 311c and the lower pressing plate 313c through the dial shaft 375c.

It can be understood that, in order to facilitate the rotation of the second transmission wheel 373c and the dial 371c, the transmission assembly 37c may further include being arranged between the dial 371c and the dial shaft 375c and/or between the second transmission wheel 373c and the dial shaft 375c. Bearings.

The first arm fixing member 33c is fixedly connected with one end of the arm 21 of the arm assembly 20, and the first arm fixing member 33c is drivingly connected with the dial 371c of the corresponding transmission assembly 37c. The second arm fixing member 35c is fixedly connected to one end of the arm 21 of the other arm assembly 20, and is drivingly connected to the dial 371c of the corresponding transmission assembly 37c.

In this embodiment, the connection between the machine arm fixing member and the machine arm can be realized by a screw and a screw hole. It can be understood that in other embodiments, the arm fixing parts (the first arm fixing part 33c and the second arm fixing part 35c) can be integrally formed with the arm, and pass through the connecting shafts (the first connecting shaft 32c and the second connecting shaft 32c). The two connecting shafts 34c) are rotatably connected with the body fixing member 31c.

The first arm fixing member 33c is a sheave. In this embodiment, the first arm fixing member 33c includes the first arm fixing member 33c from the outer edge of the first arm fixing member 33c to the inside of the first arm fixing member 33c and extending along the radial direction of the first arm fixing member 33c. The groove 331c, and at least two arc-shaped portions 333c provided along the outer edge of the first arm fixing member 33c. The channel 331c is located between two adjacent arc-shaped portions 333c. The radius of the circle where the arc-shaped portion 333c is located is the same as the radius of the body 3711c of the dial 371c of the corresponding transmission assembly 37c. In this embodiment, the number of grooves 331c is two, and the number of corresponding arc-shaped portions 333c is three. The central angle subtended by each arc-shaped portion 333c is the same as the included angle formed by the line connecting the two shift rods 3713c and the axis of the shift wheel 371c (in this embodiment, it is 120°). The first arm fixing member 33c realizes the transmission connection with the dial 371c of the transmission assembly 37c through the cooperation of the channel 331c and the shift lever 3713c of the corresponding transmission assembly 37c.

The second arm fixing member 35c is also a sheave and has the same structure as the first arm fixing member 33c. Correspondingly, the second arm fixing member 35c includes a groove extending from the outer edge of the second arm fixing member 35c to the inside of the second arm fixing member 35c along the radial direction of the second arm fixing member 35c The channel 351c, and at least two arc-shaped portions 353c arranged along the outer edge of the second arm fixing member 35c. The channel 351c is located between two adjacent arc-shaped portions 353c. The radius of the circle where the arc-shaped portion 353c is located is the same as the radius of the body 3711c of the dial 371c of the corresponding transmission assembly 37c. In this embodiment, the number of grooves 351c is two, and the number of corresponding arc-shaped portions 353c is three. The central angle of each arc-shaped portion 353c is the same as the included angle formed by the line connecting the two shift rods 3713c of the corresponding transmission assembly 37c and the axis of the shift wheel 371c (in this embodiment, it is 120°). The second arm fixing member 35c realizes the transmission connection with the dial 371c of the transmission assembly 37c through the cooperation of the channel 351c and the shift lever 3713c of the corresponding transmission assembly 37c.

It can be understood that, in order to facilitate the rotation of the first arm fixing member 33c and the second arm fixing member 35c, the first arm fixing member 33c and the first connecting shaft 32c can also be fixed between the first arm fixing member 33c and the first connecting shaft 32c. A bearing is provided between the connecting piece 35c and the second connecting shaft 34c.

32, the following takes the cooperation of the first arm fixing member 33c and the shift wheel 371c of the corresponding transmission assembly 37c as an example to introduce the coordination process between the shift wheel 371c and the arm fixing member.

In the initial state, the arm assembly 20 connected to the first arm fixing member 33c is in a folded state (corresponding to the state 1 in FIG. 32), and the outer edge of the body 3711c of the dial 371c and the first arm fixing member 33c The left arc portion 333c is coupled, and the right lever 3713c (for ease of description, hereinafter referred to as the right lever) of the dial 371c is located on the left arc portion 333c and the middle arc of the first arm fixing member 33c At the notch of the channel 331c (for ease of description, hereinafter referred to as the first channel) between the shaped portions 333c. When the motor 361c drives the first transmission wheel 363c to rotate, the first transmission wheel 363c drives the second transmission wheel 373c to rotate and then drives the dial wheel 371c to rotate in the counterclockwise direction, the right lever slides in along the first channel and passes through and The interaction of the groove walls of the first groove drives the first arm fixing member 33c to rotate in the clockwise direction (corresponding to state 2 in FIG. 32). With the rotation of the dial wheel 371c, the right shift lever gradually slides until the first channel is close to the axis of the first arm fixing member 33c. At this time, if the shift wheel 371c is driven by the second transmission wheel 373c, it continues to move counterclockwise. Rotating in the direction, the right shift lever will slide back along the first groove to the notch of the first groove in the direction away from the axis of the first arm fixing member 33c. When the right shift lever slides back to the notch of the first channel, the left shift lever 3713c of the shift wheel reaches the channel 331c between the middle arc part 333c and the right arc part 333c of the wheel (for convenience Description, hereinafter referred to as the second channel), the outer edge of the inferior arc of the body 3711c located between the two shift levers 3713c is coupled with the middle arc portion 333c (corresponding to state 3 in FIG. 32). At this time, if the dial 371c is driven by the second transmission wheel 373c to continue to rotate in the counterclockwise direction, the left dial slides into the second channel and drives the first arm fixing member 33c to continue to rotate in the clockwise direction. With the rotation of the dial wheel 371c, the left shift lever gradually slides until the second channel is close to the axis of the first arm fixing member 33c. At this time, if the shift wheel 371c is driven by the second transmission wheel 373c, it continues to move counterclockwise. Rotate in the direction, the left lever will slide back to the notch of the second channel along the second channel in the direction away from the axis of the first arm fixing member 33c, the body 3711c is located between the two levers 3713c The outer edge of the predominant arc is matched with the right arc portion 333c (corresponding to state 4 in FIG. 32). At this time, if the dial 371c continues to rotate, since the dial 3713c (including the left and right dials) does not cooperate with the channel 331c including the first channel and the second channel, the dial 371c is idling (corresponding to State 5) in FIG. 32 does not drive the first arm fixing member 33c to continue to rotate (that is, the circumferential locking of the first arm fixing member 33c is realized). At this time, the arm assembly connected to the first arm fixing member 33c is maintained in the unfolded state. The process of converting the arm assembly connected to the first arm fixing member 33c from the unfolded state to the folded state is the opposite of the above process, and will not be repeated here.

The mating process of the second arm fixing member 35c and the dial wheel 371c of the corresponding transmission assembly 37c is the same as the above process, and will not be repeated here.

It can be understood that the rotatable angle range of the arm fixing member (the first arm fixing member 33c and the second arm fixing member 33c and the second arm 35c) are related to the number of the dial 3713c of the dial wheel 371c, and those skilled in the art can do it according to needs. Design, this disclosure does not limit this.

It can be understood that in other embodiments, the first arm fixing member 33c and the first connecting shaft 32c may be integrally formed. The second arm fixing member 35c and the second connecting shaft 34c may be integrally formed.

The arm connecting member provided by the embodiment of the present disclosure drives the transmission assembly 37c to rotate through the arm driving device 36c, thereby driving the first arm fixing member 33c and the arm assembly 20 fixedly connected to the first arm fixing member 33c , Or the second arm fixing member 35c and the arm assembly 20 fixedly connected to the second arm fixing member 35c rotate, so that the arm assembly 20 is expanded or collapsed, thereby making the arm assembly 20 in use Unfold and fold up when not in use to facilitate the storage of the drone.

Please refer to Figure 33 and Figure 34 together. The embodiment of the present disclosure also provides an unmanned aerial vehicle 100 including a fuselage 101, the aforementioned arm connecting member 30 and the aforementioned arm assembly 20. The unmanned aerial vehicle 100 may be an unmanned aerial vehicle, an unmanned ship, or the like. In this embodiment, the drone 100 is a flying motorcycle. In this embodiment, the unmanned aerial vehicle 100 includes two aforementioned arm connecting members 30 and four aforementioned arm assemblies 20. It can be understood that the number of arm connectors 30 and the number of arm assemblies 20 included in the drone 100 are not limited to this, and other numbers can be designed as required, as long as the number of arm assemblies 20 is satisfied. It is sufficient to double the number of arm connectors 30.

The main body 101 includes a connecting portion 1011 configured to connect with the arm connecting member 30. In this embodiment, the number of connecting portions 1011 is two, one connecting portion 1011 is provided at a position where the pedal of the motorcycle is close to the front wheel, and the other connecting portion 1011 is located under the seat of the motorcycle and near the front of the motorcycle. The structure of the two connecting portions 1011 is substantially the same. The connecting portion 1011 is provided with a connecting hole 1012 along the width direction of the motorcycle body (body 101), which is configured for the arm connecting member 30 to pass through. In this embodiment, the connecting hole 1012 is a square hole.

The arm connecting member 30 is fixedly connected to the body 101. It can be understood that the fixed connection between the arm connecting member 30 and the fuselage 101 can be realized by the cooperation of screws and screw holes, and the specific cooperation with the present disclosure is not limited. In this embodiment, the arm connecting member 30 and the connecting portion 1011 correspond one-to-one. The arm connecting member 30 passes through the connecting hole 1012 of the corresponding connecting portion 1011.

In this embodiment, the upper pressing plate 311 and the lower pressing plate 313 are both penetrated in the connecting hole 1012, and are respectively fixedly connected to the top wall and the bottom wall of the connecting hole 1012, so that the fuselage fixing member 31 is fixedly connected to the fuselage 101 .

In the drone 100 provided in this embodiment, when the arm drive device 36 drives the arm assembly 20 fixed to the first arm fixing member 33 and the second arm fixing member 35, the arm assembly 20 is folded and folded. It is stored on both sides of the drone 100, so the space occupied by the drone 100 can be reduced.

In this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such existence between these entities or operations. The actual relationship or order.

The above are only the embodiments of the present disclosure, and are not used to limit the protection scope of the present disclosure. For those skilled in the art, the present disclosure may have various modifications and changes. Any modification, equivalent replacement or improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

A power assembly, which includes:

The propeller includes a hub and blades, and the blades are rotatably connected with the hub;

A propeller drive device, which is fixedly connected to the propeller hub and is used to drive the propeller hub to rotate, and the rotation direction of the propeller hub is perpendicular to the rotation direction of the propeller blades relative to the propeller hub;

The elastic member is connected between the hub and the blade, and includes a first connection end and a second connection end opposite to each other. The first connection end is connected to the blade, and the second connection end is connected to the blade. The hub is connected, and the elastic member can keep the blades in an unfolded state; and

The blade tray is arranged at the connection between the propeller driving device and the propeller, and the blade tray can move back and forth along its axial direction to restrain the elastic force of the elastic member to cause the blade to close and/or release The elastic force of the elastic member expands the blade.
The power assembly according to claim 1, wherein the hub is provided with a blade connecting groove, the blade includes a handle, and the handle is disposed in the blade connecting groove and is connected to the blade. The groove wall of the connecting groove is connected by a connecting shaft, the paddle can rotate around the connecting shaft, the handle portion is provided with an insertion groove for inserting the first connecting end, and the bottom wall of the paddle connecting groove A hooking part for the second connecting end to be hung on is provided.
The power assembly according to claim 1, wherein the elastic member comprises a first extension rod and a second extension rod that extend from the first connection end to the second connection end and are arranged in parallel, and the first extension rod The distance between an extension rod and the second extension rod gradually decreases from the second connection end to the first connection end.
The power assembly according to claim 1, wherein the elastic member has an axisymmetric structure with respect to a line connecting a midpoint of the first connecting end and a midpoint of the second connecting end.
The power assembly according to claim 1, wherein the housing of the propeller driving device includes an upper cover, the upper cover includes a main body and a cylindrical portion protruding from the main body, and the cylindrical portion extends along its axial direction. A through hole is opened, the propeller driving device includes a first rotating shaft fixedly connected to the propeller hub, and the first rotating shaft penetrates through the through hole.
The power assembly according to claim 5, wherein the power assembly further comprises a tray driving device connected to the paddle tray for driving the paddle tray to make the paddle tray Move back and forth.
The power assembly according to claim 6, wherein the blade tray is provided with a threaded hole along its axial direction, the threaded hole includes a hole wall, the hole wall is provided with an internal thread, and the outer side wall of the cylindrical portion is provided with a threaded hole. There is an external thread that cooperates with the internal thread, and when the paddle tray rotates forward or backward under the drive of the tray driving device, the internal thread and the external thread realize the back and forth movement through the cooperation of the internal thread and the external thread.
The power assembly according to claim 6, wherein the tray driving device and the paddle tray are connected by a gear structure.
The power assembly according to claim 6, wherein the tray driving device and the paddle tray are connected by a conveyor belt.
The power assembly according to claim 7, wherein the paddle tray is further provided with a receiving hole along its axial direction, the receiving hole is arranged coaxially with the threaded hole, and the hole diameter of the receiving hole is larger than that of the threaded hole. The hole diameter of the threaded hole, and the receiving hole is configured to receive the propeller hub and the end connected to the propeller hub when the propeller is folded.
The power assembly according to claim 10, wherein the blade includes a handle and a blade fixedly connected to the handle, the handle is hinged with the hub, and when the propeller is retracted, the handle The part is received in the receiving hole, and the end of the handle away from the blade abuts against the bottom wall of the receiving hole.
The power assembly according to claim 1, wherein, in the natural state of the elastic member, the angle formed by the extending direction of the first connecting end and the extending direction of the second connecting end ranges from 175° to 185 °.
The power assembly according to claim 1, wherein the power assembly further comprises a cooling device connected to the propeller driving device, and configured to perform a cooling process on the propeller driving device.
A machine arm assembly, comprising a machine arm and the power assembly according to any one of claims 1 to 13, wherein the power assembly is rotatably connected to one end of the machine arm, and the machine arm assembly further includes The rotation driving device connected to the arm is used to drive the power assembly to rotate and fold parallel to the arm or to rotate and unfold perpendicular to the arm.
An arm connecting piece, which is used to connect the arm assembly according to claim 14 to an unmanned aerial vehicle, comprising a fuselage fixing piece and a first machine rotatably connected to opposite ends of the fuselage fixing piece. An arm fixing part and a second arm fixing part, the fuselage fixing part is fixedly connected to the fuselage of the drone, the first arm fixing part and the second arm fixing part are fixedly connected The parts are respectively fixedly connected with the arm of the arm assembly.
An unmanned aerial vehicle, comprising a fuselage, the arm connecting piece according to claim 15 and the arm assembly according to claim 14, wherein the arm connecting piece connects the arm assembly to the aircraft body.