Unmanned aerial vehicle arm assembly

Abstract

The utility model belongs to the technical field of unmanned aerial vehicles, and particularly relates to an unmanned aerial vehicle arm assembly which comprises a fixed arm and a movable arm, the fixed arm is fixed to an unmanned aerial vehicle main frame, an ascending propeller is fixed to the far end of the movable arm, and locking mechanisms are arranged at the opposite ends of the fixed arm and the movable arm. The fixed arm and the movable arm are detachably and fixedly connected through a locking mechanism, the position, close to the movable arm, of the outer ring side of the fixed arm is a smooth ring face, a first thread is arranged at the position, away from the movable arm, of the outer ring side of the fixed arm, and a second thread with the same thread pitch as the first thread is arranged at the end, opposite to the fixed arm, of the movable arm. The locking mechanism is a pluggable locking piece, specifically a clamping block arranged on the plane of the end portion of the fixed arm, and a clamping groove matched with the clamping block is formed in the opposite end of the movable arm. According to the unmanned aerial vehicle, the connecting tightness degree of the two vehicle arms can be enhanced, the situation that the connecting position of the two vehicle arms is vacant or does not correspond to each other after the two vehicle arms are unfolded is avoided, and therefore the safety of the unmanned aerial vehicle during flight is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field, and specifically relates to an unmanned aerial vehicle arm assembly. Background Art

[0002] The arms of drones are an important part of the main structure of drones. They not only support the fuselage and carry various equipment, but are also directly related to the flight performance and stability of drones. In modern drone design, the design of the arms and the selection of materials are one of the key factors in improving the overall performance of drones.

[0003] With the development of technology, the design of drone arms is also constantly innovating. For example, some drones use a foldable arm design, which not only improves the portability of drones, but also allows drones to be stored more compactly when not in use. However, it is this design that also destroys the integrity of the drone arms. For example, when a folded drone is unfolded, the docking position of its arms is prone to misalignment, which affects the flight status of the drone and reduces the safety of the drone during flight.

[0004] Useful content

[0005] The purpose of the present invention is to provide a drone arm assembly that can strengthen the tightness of the connection between the two arms so that there will be no empty space or mismatch in the connection position of the two arms after unfolding, thereby improving the safety of the drone during flight.

[0006] The technical solutions adopted in this utility are as follows:

[0007] An unmanned aerial vehicle arm assembly comprises a fixed arm and a movable arm, wherein the fixed arm is fixed to a main frame of the unmanned aerial vehicle, and a lifting propeller is fixed at the far end of the movable arm;

[0008] Wherein, a locking mechanism is provided at the opposite ends of the fixed arm and the movable arm, and the fixed arm and the movable arm are detachably fixedly connected through the locking mechanism;

[0009] The outer ring side of the fixed arm is provided with a smooth annular surface near the movable arm, and a first thread is provided at a position away from the movable arm. The end of the movable arm opposite to the fixed arm is provided with a second thread with the same pitch as the first thread.

[0010] In a preferred embodiment of an unmanned aerial vehicle arm assembly, the locking mechanism is a plug-in type locking member, specifically a card block provided on the plane at the end of the fixed arm, and a card slot is provided at the opposite end of the movable arm to adapt to the card block.

[0011] In a preferred embodiment of an unmanned aerial vehicle arm assembly, the locking mechanism is a claw-type locking member, specifically a claw spring piece arranged on the side of a movable arm ring, one end of the claw spring piece is embedded in the interior of the movable arm, and the other end extends toward the fixed arm to form an extension plate, and the end of the extension plate is bent downward and inward to form a claw hook.

[0012] In a preferred embodiment of an unmanned aerial vehicle arm assembly, a claw groove is provided at a position of the fixed arm on the annular surface, and the claw hook is adapted to fit into the claw groove and buckle the fixed arm to complete locking.

[0013] In a preferred embodiment of an unmanned aerial vehicle arm assembly, a rubber strip is provided inside the claw groove, and the inner side surface of the rubber strip abuts against the claw hook, wherein the inner side surface of the rubber strip is raised to form a round convexity.

[0014] In a preferred embodiment of an unmanned aerial vehicle arm assembly, the locking mechanism is a threaded locking piece, which is columnar, hollow in the middle, and has a third thread on its inner annular surface. The threaded locking piece is threadedly connected to the second thread of the movable arm, and as the threaded locking piece spirals forward, the threaded locking piece gradually threads the knob on the first thread of the fixed arm.

[0015] The technical effects achieved by this utility model are:

[0016] The utility model is that the clamping block on the fixed arm is clamped into the inside of the clamping groove on the movable arm, and the hand claw spring piece on the movable arm is clamped into the inside of the claw groove on the fixed arm, so that a mutually locked state is formed. Finally, as the spiral knob of the threaded locking piece gradually clamps the hand claw spring piece, the claw hook will not be separated from the clamping groove until the threaded locking piece is connected to the fixed arm and the movable arm at the same time. This method can strengthen the tightness of the connection between the two arms, so that the connection position of the two arms will not be vacant or mismatched after unfolding, and it is not easy to bend, so the state of the arms during flight is stabilized, thereby improving the safety of the UAV during flight. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of this utility;

[0018] Figure 2 It is a disassembly diagram of the locking mechanism in the present utility model;

[0019] Figure 3 This is a practical Figure 2 Another perspective disassembly diagram;

[0020] Figure 4 It is a structural schematic diagram of the hand claw shrapnel in the present utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the rubber strip in this utility model;

[0022] Figure 6It is a schematic diagram of the docking structure between the fixed arm and the movable arm in this utility model;

[0023] Figure 7 It is a schematic diagram of the docking process between the fixed arm and the movable arm in this utility model.

[0024] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0025] 1. Fixed arm; 101. First thread; 102. Toroidal surface;

[0026] 2. Movable arm; 201. Second thread;

[0027] 3. Plug-in locking part; 301. Block; 302. Card slot;

[0028] 4. Claw-type locking part; 401. Claw spring piece; 402. Extension plate; 404. Claw hook; 405. Claw slot; 406. Rubber strip; 407. Round convex;

[0029] 5. Threaded locking part; 501. Third thread. Specific implementation manners

[0030] To make the above objects, features and advantages of this utility model more obvious and understandable, the specific implementation manners of this utility model will be described in detail below with reference to the drawings in the specification.

[0031] In the following description, many specific details are set forth in order to fully understand this utility model. However, this utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of this utility model. Therefore, this utility model is not limited by the specific embodiments disclosed below.

[0032] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of this utility model. The "in a preferred implementation manner" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that excludes other embodiments.

[0033] Thirdly, this utility model is described in detail in conjunction with the schematic diagrams. When describing the embodiments of this utility model in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples, which should not limit the protection scope of this utility model herein. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0034] Please refer to the attached drawings. This utility model provides a drone arm assembly, including a fixed arm 1 and a movable arm 2. The fixed arm 1 is fixed to the main frame of the drone, and a rising propeller is fixed to the distal end of the movable arm 2;

[0035] Among them, a locking mechanism is provided at the relative ends of the fixed arm 1 and the movable arm 2, and the fixed arm 1 and the movable arm 2 form a detachable fixed connection through the locking mechanism;

[0036] The outer ring side of the fixed arm 1 near the movable arm 2 is provided with a smooth toroidal surface 102, and the position far from the movable arm 2 is provided with a first thread 101; one end of the movable arm 2 opposite to the fixed arm 1 is provided with a second thread 201 having the same pitch as the first thread 101.

[0037] Embodiment 1:

[0038] Please refer to the attached Figure 2-3 , the locking mechanism is a plug-in locking member 3, specifically a clamping block 301 provided on the end face of the fixed arm 1, and a clamping groove 302 is provided on the relative end of the movable arm 2 to fit the clamping block 301.

[0039] In this embodiment, the fixed arm 1 and the movable arm 2 are fixedly connected in a plug-in manner through the embedding structure of the clamping block 301 and the clamping groove 302.

[0040] Embodiment 2:

[0041] Please refer to the attached Figure 2-3 , the locking mechanism is a claw-type locking member 4, specifically a claw spring piece 401 provided on the ring side of the movable arm 2. One end of the claw spring piece 401 is embedded inside the movable arm 2, and the other end extends towards the fixed arm 1 to form an extension plate 402. The end of the extension plate 402 bends downward and inward to form a claw hook 404.

[0042] Please refer to the attached Figure 4 , a claw groove 405 is provided at the position of the fixed arm 1 where the toroidal surface 102 is located, and the claw hook 404 is fitted into the claw groove 405 to latch the fixed arm 1 to complete the locking.

[0043] Please refer to the attached Figure 5 , a rubber strip 406 is provided inside the claw groove 405, and its inner side surface abuts against the claw hook 404. Among them, a round convex 407 is formed by the inner side surface of the rubber strip 406 protruding.

[0044] Specifically, there are at least two sets of engaging structures between the clamping block 301 and the clamping groove 302, and between the claw spring piece 401 and the claw groove 405.

[0045] In this embodiment, when the fixed arm 1 and the movable arm 2 are butted, the claw hook 404 formed by inward bending bites inside the claw groove 405, making it difficult for the movable arm 2 to disengage to complete the locking and fixing. Moreover, the round convex 407 provided on the inner side surface of the rubber strip 406 abuts against the claw hook 404, which can increase the friction with the claw hook 404 and reduce the probability of unhooking. And during the flight of the robotic arm, tremors will occur, and the rubber strip 406 can effectively relieve the vibration conduction.

[0046] Embodiment 3:

[0047] Please refer to the attached Figure 6-7 The locking mechanism is a threaded locking member 5. The threaded locking member 5 is columnar with a hollow middle. Its inner ring surface is provided with a third thread 501. The threaded locking member 5 is threadedly connected to the second thread 201 of the movable arm 2. As the threaded locking member 5 screws forward, the threaded locking member 5 is gradually screwed onto the first thread 101 of the fixed arm 1.

[0048] In this embodiment, the fixed arm 1 and the movable arm 2 are mainly threadedly connected by the threaded locking member 5 to connect the two arms.

[0049] Based on the above embodiment and referring to the attached Figure 7 When the three embodiments are used in combination, the block 301 on the fixed arm 1 is snapped into the inner part of the slot 302 on the movable arm 2, and the pawl spring piece 401 on the movable arm 2 is snapped into the inner part of the pawl slot 405 on the fixed arm 1 to form a mutually locked state. Finally, as the threaded locking member 5 is screwed and tightened step by step, the pawl spring piece 401 is clamped so that its pawl hook 404 will not disengage from the slot 302 until the threaded locking member 5 is simultaneously connected to the fixed arm 1 and the movable arm 2. This method can strengthen the tightness of the connection between the two arms, prevent the position where the two arms are connected from having play or misalignment after deployment, and is not easily bent, stabilizing the state of the arms during flight, thereby improving the safety of the drone during flight.

[0050] It should be particularly noted that the technical solutions in the first, second, and third embodiments can be cross-combined and used with each other. Moreover, the technical solutions in this application are not limited to only two vertically docked drone arms. It can also be rotatably docked drone arms. When in a rotating state, the locking mechanism should avoid the position where the arms are rotatably connected. There is no need to elaborate too much here. Adapted production should be carried out according to the actual situation.

[0051] The above is only the preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model. The structures, devices, and operation methods not specifically described and explained in the present utility model are implemented according to the conventional means in the art without special instructions and limitations.

Claims

1. An unmanned aerial vehicle arm assembly, characterized in that, Including: A fixed arm (1), which is fixed to the main frame of the drone; A movable arm (2), with a rising propeller fixed to the distal end of the movable arm (2); Wherein, locking mechanisms are provided at the opposite ends of the fixed arm (1) and the movable arm (2), and the fixed arm (1) and the movable arm (2) form a detachable fixed connection through the locking mechanisms; On the outer ring side of the fixed arm (1) near the movable arm (2), a smooth toroidal surface (102) is provided, and a first thread (101) is provided at a position away from the movable arm (2); at one end of the movable arm (2) opposite to the fixed arm (1), a second thread (201) with the same pitch as the first thread (101) is provided.

2. The drone arm assembly according to claim 1, wherein: The locking mechanism is a plug-in locking member (3), specifically a block (301) provided on the end plane of the fixed arm (1), and a slot (302) is provided at the opposite end of the movable arm (2) to fit the block (301).

3. The drone arm assembly according to claim 1, wherein: The locking mechanism is a pawl-type locking member (4), specifically a pawl elastic piece (401) provided on the ring side of the movable arm (2), one end of the pawl elastic piece (401) is embedded inside the movable arm (2), and the other end extends towards the fixed arm (1) to form an extension plate (402), and the end of the extension plate (402) bends downward and inwards to form a claw hook (404).

4. The drone arm assembly according to claim 3, characterized in that: A claw groove (405) is provided at the position of the fixed arm (1) where the toroidal surface (102) is located, and the claw hook (404) is adapted to be inserted into the claw groove (405) to latch the fixed arm (1) to complete the locking.

5. The drone arm assembly according to claim 4, characterized in that: A rubber strip (406) is provided inside the claw groove (405), and its inner side abuts against the claw hook (404). Among them, a circular convex (407) is formed by the inner side of the rubber strip (406) protruding.

6. A drone arm assembly according to claim 1, characterized in that: The locking mechanism is a threaded locking member (5), the threaded locking member (5) is columnar, with a hollow middle, and a third thread (501) is provided on its inner ring surface. The threaded locking member (5) is threadedly connected to the second thread (201) of the movable arm (2). As the threaded locking member (5) spirally advances, the threaded locking member (5) is gradually threadedly rotated onto the first thread (101) of the fixed arm (1).

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