Arm assembly and unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, in particular to a vehicle arm assembly and an unmanned aerial vehicle. The arm assembly comprises a first arm part, a second arm part, a first fixing assembly and a second fixing assembly, and the first arm part is connected with a fuselage of the unmanned aerial vehicle; the second arm part is provided with a rotor wing, the first end of the second arm part is hinged to the first arm part, and the second arm part is provided with a first position and a second position; when the second vehicle arm part is located at the first position, the second vehicle arm part and the first vehicle arm part are coaxially arranged; when the second arm part is located at the second position, the second end of the second arm part is close to the fuselage; the first fixing assembly is used for detachably fixing the second arm part at the first position on the first arm part; and the second fixing assembly is used for detachably connecting the second arm part at the second position with the fuselage. According to the vehicle arm assembly, the carrying size of the unmanned aerial vehicle can be reduced, and meanwhile the vehicle arm assembly can be rapidly assembled on the vehicle body.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to an arm assembly and a unmanned aerial vehicle. Background Art

[0002] With the continuous expansion of drone application fields, drones are playing an important role in all walks of life. Since most drones fly and work in outdoor environments, in order to facilitate the transportation of drones to outdoor venues, there are higher requirements for the carrying size of drones.

[0003] In order to reduce the carrying size of the drone, the drone's arms can be designed to be foldable, that is, when transporting the drone, the arms can be folded on the fuselage to reduce the transport size of the drone. Although the existing foldable arms can reduce the carrying size of the drone, the operation of folding or unfolding the arms is relatively complicated, thus affecting the assembly efficiency of the arms on the drone. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0005] To this end, the utility model provides an arm assembly, which can reduce the carrying size of the unmanned aerial vehicle and realize the rapid assembly of the arm assembly on the fuselage.

[0006] The utility model also provides a drone comprising the above-mentioned machine arm assembly.

[0007] According to an embodiment of the first aspect of the present invention, an arm assembly includes:

[0008] The first arm is connected to the fuselage of the UAV;

[0009] The second arm portion is provided with a rotor, the first end of the second arm portion is hinged to the first arm portion, and the second arm portion has a first position and a second position; when the second arm portion is in the first position, the second arm portion is coaxially arranged with the first arm portion; when the second arm portion is in the second position, the second end of the second arm portion is close to the fuselage;

[0010] A first fixing assembly, used for detachably fixing the second machine arm portion at the first position to the first machine arm portion;

[0011] The second fixing assembly is used to detachably connect the second arm portion at the second position to the fuselage.

[0012] Optionally, the first fixing component includes:

[0013] A threaded portion, disposed near the first end of the first arm portion;

[0014] The nut part is sleeved on the second arm part and can move along the length direction of the second arm part; when the second arm part is in the first position, the nut part can be matched and connected with the threaded part.

[0015] Optionally, the first fixing component further includes:

[0016] A plug-in hole, provided on the nut portion;

[0017] A plug-in connector, movably connected to the first arm portion, having a third position and a fourth position;

[0018] A driving member connected to the plug-in member and used for driving the plug-in member to reciprocate between the third position and the fourth position;

[0019] After the nut portion is connected with the threaded portion and the plug hole is moved to a relative position with the connector, when the connector is in the third position, the connector is plugged with the plug hole; when the connector is in the fourth position, the connector is away from the plug hole.

[0020] Optionally, a mounting seat is provided on the first machine arm, and the connector is movably connected to the mounting seat; the driving member includes:

[0021] A spring is located in the mounting seat and sleeved on the plug-in component, wherein the first end of the spring abuts against the plug-in component, and the second end of the spring abuts against the mounting seat; when the spring is in an extended state, the plug-in component is located at a third position;

[0022] The driving rod is connected to the plug-in component and is used for applying a force to compress the spring to the plug-in component so as to move the plug-in component to the fourth position.

[0023] Optionally, the driving member further comprises a locking portion, and when the connector is in the fourth position, the locking portion is used to lock the driving rod to fix the connector in the fourth position.

[0024] Optionally, the first fixing component further includes:

[0025] A retaining ring is provided at one end of the nut portion close to the threaded portion;

[0026] A rubber ring is sleeved on the first arm portion and is arranged close to an end of the threaded portion away from the second arm portion;

[0027] When the nut portion is connected with the threaded portion, one end of the nut portion provided with a retaining ring can move to abut against the rubber ring.

[0028] Optionally, one end of the first arm portion connected to the second arm portion is provided with a cylindrical surface, and a first tooth-shaped portion is provided on an outer peripheral wall of the cylindrical surface; the first end of the first arm portion is connected to the second tooth-shaped portion;

[0029] When the second arm portion is at the first position, the second tooth-shaped portion is located on the outer circumference of the cylindrical surface and is matched and connected with the first tooth-shaped portion.

[0030] Optionally, the second fixing component includes:

[0031] A fixing member connected to the second machine arm;

[0032] The locking part is arranged on the fuselage; when the second machine arm part is in the second position, the fixing member can be unlocked and locked on the locking part.

[0033] Optionally, the locking portion includes:

[0034] A connecting seat, arranged on the fuselage;

[0035] Ball plungers, two ball plungers are arranged on the connecting seat, and the ball heads of the two ball plungers are arranged opposite to each other;

[0036] When the second arm portion is at the second position, the fixing member can be inserted between the two ball plungers and can be unlockably locked by the ball heads of the two ball plungers.

[0037] A drone according to an embodiment of the second aspect of the utility model includes the arm assembly of the first aspect or its various implementations.

[0038] One of the above technical solutions has at least the following advantages or beneficial effects:

[0039] For an arm assembly of an embodiment of the utility model, before using the drone, the second arm part is rotated to the first position, and the second arm part in the first position is fixed to the first arm part by the first fixing assembly; when the drone is stored, the first fixing assembly fixes the second arm part on the first arm part, and then the second arm part is rotated to the second position, and the second arm part in the second position is fixed to the fuselage by the second fixing assembly. The arm assembly provided by the utility model can fold the second arm part relative to the first arm part through the hinge design between the first arm part and the second arm part, and the folded second arm part is fixed to the fuselage by the second fixing assembly, which can reduce the carrying size of the drone and improve the convenience of drone transportation. At the same time, by fixing the second arm part in the extended state to the first arm part by the first fixing assembly, the arm assembly can be quickly assembled on the fuselage, and the efficiency of the arm assembly installation is improved.

[0040] The drone provided by the embodiment of the utility model is provided with the above-mentioned arm assembly. Since the arm assembly has the above-mentioned technical effects, the drone provided with the arm assembly should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1A schematic diagram showing the connection between an arm assembly and a fuselage according to an embodiment of the utility model is shown;

[0042] Figure 2 A schematic structural diagram of an arm assembly according to an embodiment of the present invention is shown;

[0043] Figure 3 Shows Figure 2 A schematic diagram of the local structure of the arm assembly in FIG.

[0044] Figure 4 Shows Figure 2 The cross-sectional view at AA in FIG.

[0045] Figure 5 Shows Figure 5 A schematic diagram of the local structure of the arm assembly in FIG.

[0046] Figure 6 A schematic structural diagram of an arm assembly of another embodiment provided by the utility model is shown;

[0047] Figure 7 Shows Figure 6 The cross-sectional view at AA in FIG.

[0048] Figure 8 Shows Figure 7 A schematic diagram of the local structure of the arm assembly in FIG.

[0049] Fig. 9 A schematic structural diagram of a second fixing assembly according to another embodiment of the present invention is shown;

[0050] Fig.10 A schematic structural diagram of a first machine arm portion and a second machine arm portion at a connection point of another embodiment provided by the utility model is shown.

[0051] [Description of Reference Numerals]

[0052] 1. a first arm portion, 101. a cylindrical surface, 102. a first toothed portion;

[0053] 2. a second machine arm portion, 201 , a second toothed portion;

[0054] 3. first fixing assembly, 301. threaded portion, 302. nut portion, 303. plug hole, 304. plug connector, 305. plug socket, 306. mounting socket, 307. spring, 308. driving rod, 309. retaining ring, 3010. rubber ring, 3091. first fixing portion, 3092. second fixing portion;

[0055] 4. Second fixing assembly, 401. Fixing member, 402. Ball plunger, 403. Housing, 404. Mounting plate, 405. Mounting through hole, 406. Plug interface;

[0056] 5. Body;

[0057] 6. Articulated assembly, 601. First articulated seat, 602. Second articulated seat, 603. Rotating shaft. DETAILED DESCRIPTION

[0058] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0059] With the continuous expansion of drone application fields, drones are playing an important role in all walks of life. Since most drones fly and work in outdoor environments, in order to facilitate the transportation of drones to outdoor venues, there are higher requirements for the carrying size of drones.

[0060] In order to reduce the carrying size of the drone, the drone's arm assembly is generally set to a detachable connection form, that is, the arm assembly is assembled through ordinary threaded connection or snap-on connection. However, the ordinary threaded connection method lacks an effective anti-loosening device, and the vibration during the operation of the drone is likely to cause the thread to loosen; while the snap-on connection method and the snap-on method require manual operation of each arm assembly in sequence, which requires a large amount of labor, and there is a gap between the snaps of the two components, so the assembly space is large and the weight is high. It can be seen that the above two arm assembly methods are not conducive to the storage or assembly of the arm assembly.

[0061] In order to solve at least one of the technical problems existing in the prior art or related technology, the utility model provides an arm assembly. Through the hinge design between the first arm part and the second arm part, the second arm part can be folded relative to the first arm part, and the folded second arm part can be fixed to the fuselage by the second fixing assembly, which can reduce the carrying size of the UAV and improve the convenience of transporting the UAV. At the same time, by fixing the second arm part in an extended state to the first arm part by using the first fixing assembly, the arm assembly can be quickly assembled on the fuselage, thereby improving the efficiency of installing the arm assembly.

[0062] The following describes an arm assembly and a drone according to some embodiments of the present invention with reference to the accompanying drawings.

[0063] See also Figures 1 to 8An arm assembly of an embodiment of the utility model is applied to a drone, and the arm assembly includes a first arm part 1, a second arm part 2, a first fixing assembly 3 and a second fixing assembly 4, the first arm part 1 is connected to the fuselage 5 of the drone; the second arm part 2 is provided with a rotor, the first end of the second arm part 2 is hinged to the first arm part 1, and the second arm part 2 has a first position and a second position; when the second arm part 2 is in the first position, the second arm part 2 is coaxially arranged with the first arm part 1; when the second arm part 2 is in the second position, the second end of the second arm part 2 is close to the fuselage 5; the first fixing assembly 3 is used to detachably fix the second arm part 2 in the first position on the first arm part 1; the second fixing assembly 4 is used to detachably connect the second arm part 2 in the second position to the fuselage 5.

[0064] Here, an articulation assembly 6 is provided at the articulation of the first arm portion 1 and the second arm portion 2. The articulation assembly 6 may include a first articulation seat 601, a second articulation seat 602 and a rotating shaft 603. The first articulation seat 601 is provided on the first arm portion 1, the second articulation seat 602 is provided on the second articulated arm, and the first articulation seat 601 and the second articulation seat 602 are hinged through the rotating shaft 603.

[0065] For clarification, see Figure 1 When the second arm portion 2 is in the second position, the angle between the second arm portion 2 and the first arm portion 1 can be 86°; the second fixing component 4 is used to connect the second arm portion 2 in the second position to the side of the fuselage 5 close to the second arm portion 2, so that the second arm portion 2 is fixed on the fuselage 5 by cooperation between the first arm portion 1 and the second fixing component 4.

[0066] Among them, see Figures 2 to 8 When the second arm portion 2 is in the first position, the arm assembly is in an unfolded state that can be used; see Figure 1 When the second arm portion 2 is in the second position, the arm assembly is in a folded state that can be stored.

[0067] In this embodiment, before using the drone, the second arm 2 is rotated to the first position, and the second arm 2 in the first position is fixed to the first arm 1 by the first fixing assembly 3; when the drone is stored, the first fixing assembly 3 is released to fix the second arm 2 on the first arm 1, and then the second arm 2 is rotated to the second position, and the second arm 2 in the second position is fixed to the fuselage 5 by the second fixing assembly 4. The arm assembly provided by the utility model can fold the second arm 2 relative to the first arm 1 through the hinge design between the first arm 1 and the second arm 2, and the folded second arm 2 is fixed to the fuselage 5 by the second fixing assembly 4, which can reduce the carrying size of the drone and improve the convenience of transporting the drone. At the same time, by fixing the second arm 2 in the extended state with the first arm 1 by the first fixing assembly 3, the arm assembly can be quickly assembled on the fuselage 5, and the efficiency of installing the arm assembly can be improved.

[0068] In some possible embodiments, the first fixing component 3 includes a threaded portion 301 and a nut portion 302, the threaded portion 301 is arranged near the first end of the first arm portion 1; the nut portion 302 is mounted on the second arm portion 2 and can move along the length direction of the second arm portion 2; when the second arm portion 2 is in the first position, the nut portion 302 can be matched and connected with the threaded portion 301.

[0069] Here, after the nut portion 302 is mounted on the second arm portion 2 , the axis of the nut portion 302 and the axis of the second arm portion 2 are located on the same straight line.

[0070] In this embodiment, before using the drone, the second arm portion 2 is rotated relative to the first arm portion 1 to be in the first position, and the nut portion 302 mounted on the second arm portion 2 is threadedly connected with the threaded portion 301 to fix the second arm portion 2 in the first position to the first arm portion 1, so that the entire arm assembly is in an unfolded state that can be used; when storing the drone, the nut portion 302 is disengaged from the threaded portion 301 to release the fixation of the second arm portion 2 in the first position on the first arm portion 1, and then the second arm portion 2 is rotated relative to the first arm portion 1 to be in the second position, and the second arm portion 2 is fixed to the fuselage 5 by the second fixing component 4, so that the entire arm assembly is in a folded state that can be stored.

[0071] Furthermore, the first fixing component 3 also includes a plug-in hole 303, a connector 304 and a driving member, wherein the plug-in hole 303 is arranged on the nut portion 302; the connector 304 can be movably connected to the first arm portion 1, and has a third position and a fourth position; the driving member is connected to the connector 304, and is used to drive the connector 304 to reciprocate between the third position and the fourth position; after the nut portion 302 is cooperatively connected with the threaded portion 301, and the plug-in hole 303 is moved to a relative position with the connector 304, when the connector 304 is in the third position, the connector 304 cooperates with the plug-in hole 303 for plugging; when the connector 304 is in the fourth position, the connector 304 is away from the plug-in hole 303.

[0072] Here, a socket 305 may be provided on the nut portion 302 , and a socket 303 is provided on the socket 305 . The axial direction of the socket 303 may be parallel to the length direction of the second arm portion 2 .

[0073] Before using the drone, and after the second arm 2 is fixed to the first arm 1 by threaded cooperation between the nut portion 302 and the threaded portion 301, the socket 305 can be moved with the nut portion 302 to a relative position with the connector 304, that is, a coaxial position of the plug hole 303 and the connector 304, and then the driving member is used to drive the connector 304 to move toward the plug hole 303 to the third position, so that the connector 304 and the plug hole 303 are plugged in, so as to lock the nut portion 302 on the first arm 1, so as to avoid the problem of the nut portion 302 loosening relative to the threaded portion 301 due to the vibration of the drone during operation.

[0074] When the drone is to be stored, the driving member is used to drive the connector 304 to move away from the plug hole 303 to the fourth position, so that the connector 304 is away from the plug hole 303, and then the nut portion 302 is disengaged from the threaded portion 301, and the second arm portion 2 in the first position is released from the first arm portion 1, so that the second arm portion 2 can be rotated relative to the first arm portion 1 to the second position, thereby making the entire arm assembly present a folded state that can be stored.

[0075] Furthermore, a mounting seat 306 is provided on the first arm portion 1, and the connector 304 is movably connected to the mounting seat 306; the driving member includes a spring 307 and a driving rod 308, the spring 307 is located in the mounting seat 306 and is sleeved on the connector 304, the first end of the spring 307 abuts against the connector 304, and the second end of the spring 307 abuts against the mounting seat 306; when the spring 307 is in an extended state, the connector 304 is located in the third position; the driving rod 308 is connected to the connector 304, and is used to apply a force to the connector 304 to compress the spring 307, so as to move the connector 304 to the fourth position.

[0076] Here, a mounting cavity is provided on the mounting seat 306, and the plug-in component 304 is disposed in the mounting cavity and can move axially in the mounting cavity.

[0077] For example, see Figures 2 to 5 A slide groove connected to the installation cavity is provided on the side wall of the mounting seat 306, and the length direction of the slide groove is parallel to the length direction of the installation cavity. One end of the driving rod 308 passes through the slide groove and is connected to the connector 304. When the driving rod 308 is driven to move along the slide groove close to the side of the fuselage 5, the connector 304 applies a force to compress the spring 307 as the driving rod 308 moves, so that the connector 304 can overcome the force of the spring 307 and move to the fourth position.

[0078] For example, see Figures 6 to 8 A through hole is provided at one end of the mounting seat 306 away from the plug hole 303, and one end of the driving rod 308 passes through the through hole and is connected to the connector 304. When the driving rod 308 is driven to move along the side of the mounting cavity close to the fuselage 5, the connector 304 applies a force to compress the spring 307 as the driving rod 308 moves, so that the connector 304 can overcome the force of the spring 307 and move to the fourth position.

[0079] In this embodiment, when the nut portion 302 is threadedly connected with the threaded portion 301, the driving rod 308 can apply a force to compress the spring 307 to the connector 304, so that the connector 304 moves to the fourth position. After the plug hole 303 moves to a relative position with the nut portion 302 and the connector 304, the driving rod 308 is released to compress the spring 307 to move the connector 304 to the third position under the resetting action of the spring 307, so that the connector 304 is plugged into the plug hole 303.

[0080] Furthermore, the driving member further includes a locking portion, and when the connector 304 is in the fourth position, the locking portion is used to lock the driving rod 308 to fix the connector 304 in the fourth position.

[0081] In order to facilitate the mating connection between the connector 304 and the plug-in hole 303, a locking portion is provided here. When the connector 304 is in the fourth position, the driving rod 308 can be locked by the locking portion to fix the connector 304 in the fourth position, so as to avoid the problem of inconvenient assembly caused by manually controlling the driving rod 308 to apply a force to compress the spring 307 to the connector 304 before the plug-in hole 303 moves with the nut portion 302 to a relative position with the connector 304.

[0082] For example, see Figures 2 to 5A sliding groove connected to the mounting cavity is provided on the side wall of the mounting seat 306, and when one end of the driving rod 308 passes through the sliding groove and is connected to the connector 304, the locking portion can be a limiting groove connected to the sliding groove. When the connector 304 is in the fourth position, the driving rod 308 can be rotated to make it cooperate with the limiting groove to fix the driving rod 308 on the mounting seat 306, thereby fixing the connector 304 in the fourth position.

[0083] For example, see Figures 6 to 8 A through hole is provided at one end of the mounting seat 306 away from the plug hole 303, and when one end of the driving rod 308 passes through the through hole and is connected to the connector 304, the locking portion can be provided on the first arm portion 1, and when the connector 304 is in the fourth position, the locking portion can be matched and connected with the driving rod 308 to fix the driving rod 308 on the first arm portion 1, and then the connector 304 is fixed at the fourth position.

[0084] In this embodiment, before the nut portion 302 is mated and connected with the threaded portion 301, and when the driving rod 308 drives the connector 304 to move to the fourth position, the locking portion is used to lock the driving rod 308 so that the connector 304 is fixed in the fourth position, and then the nut portion 302 is rotated to be mated and connected with the threaded portion 301, and after the plug hole 303 moves to a relative position with the nut portion 302 and the connector 304, the locking portion is released from the driving rod 308, so that the connector 304 moves to the third position under the resetting action of the spring 307, thereby completing the mating connection between the connector 304 and the plug hole 303.

[0085] In some possible embodiments, the first fixing component 3 also includes a stop ring 309 and a rubber ring 3010, the stop ring 309 is arranged at one end of the nut portion 302 close to the threaded portion 301; the rubber ring 3010 is sleeved on the first arm portion 1 and is arranged close to the end of the threaded portion 301 away from the second arm portion 2; when the nut portion 302 is connected with the threaded portion 301, the end of the nut portion 302 provided with the stop ring 309 can be moved to abut against the rubber ring 3010.

[0086] Here, the stop ring 309 is sleeved on the nut part 302, and the stop ring 309 can be detachably connected to the nut part 302. The stop ring 309 is provided with a first fixing part 3091 and a second fixing part 3092. After the stop ring 309 is sleeved on the nut part 302, the first fixing part 3091 and the second fixing part 3092 are locked to fix the stop ring 309 on the nut part 302. In addition, the plug hole 303 can be provided on the stop ring 309. After the nut part 302 and the threaded part 301 are connected, the plug hole 303 can be adjusted to be located at a position opposite to the plug connector 304 by adjusting the position of the stop ring 309 on the nut part 302.

[0087] In this embodiment, a stop ring 309 is provided at one end of the nut portion 302 close to the threaded portion 301, and a rubber ring 3010 is provided on the first arm portion 1. When the nut portion 302 is matingly connected with the threaded portion 301, the end of the nut portion 302 provided with the stop ring 309 is moved to abut against the rubber ring 3010, so that extrusion is generated between the nut portion 302 and the rubber ring 3010, thereby increasing the friction force at the connection between the first arm portion 1 and the second arm portion 2, and making the mating connection between the nut portion 302 and the threaded portion 301 more stable.

[0088] In some possible implementations, see Figure 1 and Fig.10 A cylindrical surface 101 is provided at one end where the first arm portion 1 is connected to the second arm portion 2, and a first tooth-shaped portion 102 is provided on the outer peripheral wall of the cylindrical surface 101; the first end of the first arm portion 1 is connected to the second tooth-shaped portion 201; when the second arm portion 2 is in the first position, the second tooth-shaped portion 201 is located on the outer peripheral side of the cylindrical surface 101 and is matched and connected with the first tooth-shaped portion 102.

[0089] It should be noted that when the second arm portion 2 is in the first position, the second toothed portion 201 and the opposing surfaces of the first toothed portion 102 cooperate with each other, so that the first toothed portion 102 and the second toothed portion 201 form a cylindrical surface covering the outer peripheral wall of the cylindrical surface 101. The cylindrical surface 101 is coaxially arranged with the first arm portion 1.

[0090] In this embodiment, by providing a cylindrical surface 101 at one end where the first arm portion 1 and the second arm portion 2 are connected, the second arm portion 2 and the first arm portion 1 can be kept coaxial when the second arm portion 2 is fixed to the first arm portion 1 through the first fixing assembly 3, so as to improve the straightness of the entire arm assembly. At the same time, by providing the first toothed portion 102 and the second toothed portion 201, the force condition at the connection between the first arm portion 1 and the second arm portion 2 can be improved when the arm assembly is pitching and tilting.

[0091] In some possible embodiments, the second fixing assembly 4 includes a fixing member 401 and a locking portion, the fixing member 401 is connected to the second arm portion 2; the locking portion is arranged on the fuselage 5; when the second arm portion 2 is in the second position, the fixing member 401 can be unlockably locked on the locking portion.

[0092] It should be noted that a rotor connector is provided at the second end of the second arm portion 2, and the rotor connector is used to install the rotor, and the fixing member 401 is provided on the rotor connector.

[0093] In this embodiment, when the second arm portion 2 is in the second position, the fixing piece 401 connected to the second arm portion 2 can be locked in cooperation with the locking portion on the fuselage 5 to achieve fixing the second arm on the fuselage 5 in a stored state; when the drone is used, the locking portion on the fixing piece 401 can be released to release the stored state of the second arm portion 2, and then the second arm portion 2 can be rotated to the first position so that the second arm portion 2 can be connected to the first arm portion 1 through the cooperation of the nut portion 302 and the threaded portion 301.

[0094] For further information, see Fig.10 The locking part includes a connecting seat and a ball plunger 402, the connecting seat is arranged on the fuselage 5; the two ball plungers 402 are arranged on the mounting seat 306, and the ball heads of the two ball plungers 402 are arranged opposite to each other; when the second arm part 2 is in the second position, the fixing member 401 can be inserted between the two ball plungers 402 and can be unlocked and locked by the ball heads of the two ball plungers 402.

[0095] Here, the connecting seat may include a shell 403 and a mounting plate 404 arranged on the shell 403, the shell 403 is installed on the fuselage 5, and the mounting plate 404 is provided with a mounting hole 405 for installing the ball head plunger 402, and the two ball head plungers 402 are respectively arranged on the mounting plate 404 through a mounting hole 405, and the mounting plate 404 is provided with a plug interface 406, which is located between the two mounting holes 405. The fixing member 401 can pass through the plug interface 406 to realize the insertion of the fixing member 401 between the two ball head plungers 402, thereby realizing that the fixing member 401 is unlockably locked by the ball heads of the two ball head plungers 402.

[0096] An embodiment of the utility model provides a drone, comprising a propeller, a fuselage and an arm assembly in any of the above embodiments.

[0097] Since the drone includes any of the arm assemblies in the first aspect, it has the beneficial effects of any of the above embodiments, which will not be described in detail here.

[0098] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0099] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0100] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0101] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "exemplary embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0102] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A machine arm assembly, characterized in that: include: The first arm is connected to the fuselage of the UAV; a second machine arm portion, provided with a rotor, wherein a first end of the second machine arm portion is hinged to the first machine arm portion, and the second machine arm portion has a first position and a second position; when the second machine arm portion is in the first position, the second machine arm portion is coaxially arranged with the first machine arm portion; when the second machine arm portion is in the second position, the second end of the second machine arm portion is close to the fuselage; a first fixing assembly, used for detachably fixing the second machine arm portion at the first position to the first machine arm portion; The second fixing assembly is used to detachably connect the second arm portion at the second position to the body.

2. The machine arm assembly according to claim 1, characterized in that: The first fixing assembly comprises: a threaded portion, disposed near the first end of the first arm portion; The nut portion is sleeved on the second arm portion and can move along the length direction of the second arm portion; when the second arm portion is in the first position, the nut portion can be matched and connected with the threaded portion.

3. The machine arm assembly according to claim 2, characterized in that: The first fixing assembly also includes: A plug-in hole, provided on the nut portion; A connector, movably connected to the first arm portion, having a third position and a fourth position; a driving member connected to the plug-in member and used for driving the plug-in member to reciprocate between the third position and the fourth position; After the nut portion is connected in cooperation with the threaded portion and the plug-in hole is moved to a relative position with the connector, when the connector is in the third position, the connector is plugged in with the plug-in hole; when the connector is in the fourth position, the connector is away from the plug-in hole.

4. The machine arm assembly according to claim 3, characterized in that: The first arm portion is provided with a mounting seat, and the connector is movably connected to the mounting seat; the driving member comprises: a spring, located in the mounting seat and sleeved on the connector, wherein the first end of the spring abuts against the connector, and the second end of the spring abuts against the mounting seat; when the spring is in an extended state, the connector is located at the third position; A driving rod is connected to the connector and is used to apply a force to the connector to compress the spring, so as to move the connector to the fourth position.

5. The machine arm assembly according to claim 4, characterized in that: The driving member further comprises a locking portion, and when the connector is in the fourth position, the locking portion is used to lock the driving rod so that the connector is fixed in the fourth position.

6. The machine arm assembly according to claim 2, characterized in that: The first fixing assembly also includes: A stop ring, arranged at one end of the nut portion close to the threaded portion; A rubber ring is sleeved on the first arm portion and is arranged close to an end of the threaded portion away from the second arm portion; When the nut portion is connected with the threaded portion in a cooperative manner, one end of the nut portion provided with the retaining ring can be moved to abut against the rubber ring.

7. The machine arm assembly according to claim 1, characterized in that: One end of the first arm portion connected to the second arm portion is provided with a cylindrical surface, and a first tooth-shaped portion is provided on the outer peripheral wall of the cylindrical surface; the first end of the first arm portion is connected to the second tooth-shaped portion; When the second arm portion is at the first position, the second tooth-shaped portion is located at the outer circumferential side of the cylindrical surface and is cooperatively connected with the first tooth-shaped portion.

8. The machine arm assembly according to any one of claims 1 to 7, characterized in that: The second fixing assembly comprises: A fixing member connected to the second machine arm portion; The locking part is arranged on the fuselage; when the second arm part is in the second position, the fixing member can be unlockably locked on the locking part.

9. The machine arm assembly according to claim 8, characterized in that: The locking portion comprises: A connecting seat, arranged on the fuselage; A ball plunger, two of which are arranged on the connecting seat, and the ball heads of the two ball plungers are arranged opposite to each other; When the second arm portion is at the second position, the fixing member may be inserted between the two ball plungers and may be unlockably locked by the ball heads of the two ball plungers.

10. A drone, characterized in that: Comprising the arm assembly as described in any one of claims 1 to 9.

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