Multi-rotor unmanned aerial vehicle arm quick dismounting mechanism and unmanned aerial vehicle

Abstract

The invention relates to the technical field of unmanned aerial vehicles, and particularly discloses a multi-rotor unmanned aerial vehicle arm quick dismounting mechanism and an unmanned aerial vehicle, the quick dismounting mechanism comprises a mounting seat arranged on a vehicle body of the unmanned aerial vehicle, the mounting seat is provided with a connecting part and a mounting part, the connecting part is provided with a joint cavity, and the mounting seat is provided with a first mounting hole extending to the joint cavity; a second mounting hole is formed in the mounting part; the vehicle arm is provided with a boss which can be detachably connected with the mounting seat, and the boss is provided with a first clamping groove and a locking block; the pre-locking elastic assembly is arranged in the first mounting hole in a penetrating mode and can be connected with or separated from the first clamping groove in a clamped mode. The deformation locking assembly is arranged on the mounting part and can be clamped with or separated from the locking block in a pressing manner; the locking assembly is arranged in the second mounting hole, the locking assembly is configured to be in locking fit with the deformation locking assembly based on linkage after the deformation locking assembly is in clamping fit with the locking block, and the quick disassembly mechanism has the characteristics of locking reliability, zero-clearance assembly, mistaken opening prevention protection and convenient disassembly and assembly.

Description

Technical Field

[0001] This application relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a quick-release mechanism for the arm of a multi-rotor UAV and the UAV itself. Background Technology

[0002] Multirotor drones are widely used in various fields due to their flexible control and stable flight performance. As the core component connecting the fuselage and propellers, the reliability of the connection directly affects the flight safety of the drone. The folding structure of the arms reduces the space occupied by the drone when not in flight, making it easier to store and transport. However, for drones with long arms, the folding design cannot achieve a better reduction in space ratio, and the folding structure is complex. In this case, a disassembly mechanism for the arms is more convenient for transportation and storage.

[0003] To balance rapid assembly and disassembly of the arms with flight stability, existing quick-release mechanisms for multi-rotor UAV arms mostly employ a single elastic locking or simple mechanical locking structure. However, these structures present several challenges in practical applications: Firstly, relying solely on elastic pins for locking can lead to arm loosening during flight due to vibrations and airflow impacts, potentially causing mis-locking and seriously threatening flight safety. Furthermore, after elastic locking, a gap of at least 0.2mm often exists between the arm and fuselage, causing flight attitude fluctuations and reducing flight control accuracy. Secondly, some quick-release structures require tools for multiple steps, resulting in cumbersome and inefficient assembly and disassembly processes that fail to meet the needs of rapid maintenance. Additionally, the locking mechanism is prone to accidental unlocking during collisions or extreme airflow during UAV flight, further exacerbating the operational risks.

[0004] Therefore, how to overcome the limitations of existing structures and design a quick-release mechanism for the arm that combines locking reliability, gapless assembly, protection against accidental opening, and convenient disassembly and assembly, while ensuring locking stability under extreme conditions and eliminating the impact of assembly gaps on flight performance, has become an important technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This application aims to propose a quick-release mechanism for the arm of a multi-rotor unmanned aerial vehicle (UAV) to overcome the limitations of existing quick-release arm structures. It combines locking reliability, gapless assembly, protection against accidental opening, and convenient disassembly and assembly. While achieving rapid disassembly and assembly of the arm, it ensures locking stability under extreme working conditions and eliminates the impact of assembly gaps on flight performance.

[0006] In a first aspect, this application provides a quick-release mechanism for the arm of a multi-rotor unmanned aerial vehicle, comprising: Mounting base, disposed on the body of UAV, the mounting base has a connecting part and a mounting part adjacent to the connecting part, the connecting part has a joint cavity along a first direction, the connecting part has a first mounting hole extending to the joint cavity along a second direction, and the mounting part has a second mounting hole along the second direction; The arm is provided with a boss that can be detachably connected to the connecting part. The boss has a first slot on the front end face and a locking block on the side end face. A pre-locking elastic component is inserted through the first mounting hole, and the pre-locking elastic component is configured to selectively engage or disengage with the first slot. A deformation locking assembly is provided at the mounting portion, and the deformation locking assembly is configured to selectively engage or disengage with the locking block; A locking component is inserted into the second mounting hole. The locking component is configured to form a locking engagement with the deformation locking component through linkage after the deformation locking component and the locking block are engaged.

[0007] In some embodiments, the mating cavity is provided with a male connector for electrical connection, and two pre-locking elastic components are respectively disposed on both sides of the male connector in a third direction; and, The boss has a female connector on its front end face that mates with the male connector, and the first slots are respectively opened on both sides of the female connector in the third direction.

[0008] In some embodiments, the pre-locking elastic component includes a first pin, a first elastic element sleeved on the first pin, and a first latch disposed on the first pin; The first pin is rotated in a restricted manner through the first mounting hole, and one end of the first elastic member abuts against a portion of the outer sidewall of the first pin, while the other end abuts against a portion of the inner sidewall of the first mounting hole. The first latch is provided with a first locking end extending into the engagement cavity, and the first locking end can engage with the first slot.

[0009] In some embodiments, one end of the first pin protrudes from the top surface of the mounting base; the front end face of the first locking end is provided with a guide surface, and the front end face of the boss is provided with a guide block adapted to the guide surface; When the arm engages with the mounting base, the guide block presses the guide surface along the first direction to drive the first pin to move along the second direction and compress the first elastic element, and causes the first locking end to automatically slide into the first slot for locking engagement. When the arm is separated from the mounting base, the first pin protruding from the surface of the mounting base is pressed down by external force, so that the first locking end is disengaged from the first slot.

[0010] In some embodiments, the mounting base is provided with mounting portions at opposite ends on both sides of the connecting portion, and the two deformation locking components are respectively mirror-displayed on the two mounting portions; the boss is provided with two locking blocks that cooperate with the deformation locking components on opposite side end faces.

[0011] In some embodiments, the deformation locking assembly includes a pressing member and a deformation locking member; the pressing member has a first through hole and a second through hole offset from each other, wherein the first through hole is located at the end of the pressing member; the deformation locking member has a locking hook portion and a third through hole offset from each other, wherein the third through hole and the locking hook portion are respectively located at opposite ends of the deformation locking member; The pressing member is rotatably connected to the mounting part through a first rotating shaft passing through the first through hole. The deformation locking member is rotatably connected to the pressing member through a second rotating shaft passing through the second through hole and the third through hole in sequence. When the pressing member is driven to rotate around the first rotating shaft, the locking hook part is pressed and engaged or separated from the locking block by lever action.

[0012] In some embodiments, the portion of the deformation locking member between the locking hook and the third through hole has an arc-shaped projection profile along the second direction, and the deformation locking member is provided with a relief cavity. One end of the pressing member passes through the relief cavity and is rotatably connected to the mounting portion within the arc-shaped enclosed area.

[0013] In some embodiments, the deformation locking member is provided with a limiting part near the third through hole, the limiting part is rotatable around the second rotating shaft and has a locking groove on its end face; The locking assembly includes a second pin, a second elastic element sleeved on the second pin, and a second latch provided on the second pin; The second pin is rotated in a restricted manner through the second mounting hole. One end of the second elastic member abuts against a portion of the outer side wall of the second pin, and the other end abuts against a portion of the inner side wall of the second mounting hole. The second latch is provided with a second locking end that extends to the rotation path of the limiting part and cooperates with the locking groove.

[0014] In some embodiments, the locking groove is formed on the bottom end face of the limiting portion along the second direction, and the surface of the mounting portion is provided with a rib surface on the rotation path of the second rotating shaft, the rib surface being adapted to the outer contour of the deformable locking member on the second rotating shaft; When the pressing member drives the deformation locking member to rotate until it engages with the locking block, the deformation locking member abuts against the rib surface on the outer contour of the second rotating shaft; the limiting part can squeeze the second locking end to drive the second pin to move along the second direction and compress the second elastic member, and cause the second locking end to automatically slide into the locking groove for locking engagement.

[0015] The one or more technical solutions provided in the first aspect of this application have at least the following technical effects or advantages: The quick-release mechanism for the UAV arm provided in this application utilizes the engagement cavity of the connecting part to provide precise assembly space for the arm boss. Combined with the layout adaptation of the first and second mounting holes, it enables the pre-locking elastic component, deformation locking component, and locking component to form an orderly linkage. The first slot and locking block of the arm boss correspond to the snap-fit ​​positioning of the pre-locking elastic component and the pressing engagement of the deformation locking component, respectively, achieving a step-by-step connection between pre-positioning locking and snap-fit ​​fixation. The pre-locking elastic component first provides a reference for subsequent snap-fit ​​fixation by snap-fitting with the first slot, avoiding assembly deviations. The deformation locking component then achieves a tight fit between the arm and the fuselage by pressing the locking block. After deformation locking is in place, the locking component forms a secondary lock through linkage. The collaboration of these three components not only achieves quick disassembly and assembly without tool assistance but also integrates the convenience of pre-positioning, the gapless locking, and the reliability of preventing accidental opening. The resulting dual locking protection and integrated operation significantly improve the stability and ease of use of the arm connection.

[0016] Secondly, this application also provides a drone, which includes a multi-rotor drone arm quick-release mechanism as described in any of the first aspects above.

[0017] It should be noted that the technical effects achievable by the technical solution provided in the second aspect of this application can be found in the relevant description in the first aspect above, and will not be repeated here.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a partial structural schematic diagram of a multi-rotor unmanned aerial vehicle provided according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the body provided according to an embodiment of this application; Figure 3 This is a schematic diagram of the mounting base and pre-locking elastic component provided according to the embodiments of this application; Figure 4 This is a partial structural schematic diagram of the arm provided according to an embodiment of this application; Figure 5 This is a partial sectional view of the body and arm after connection according to an embodiment of this application; Figure 6 This is an exploded structural diagram of the deformation locking assembly provided in the embodiments of this application; Figure 7 This is a structural schematic diagram of the deformation locking assembly and locking assembly provided according to the embodiments of this application; Figure 8 This is a cross-sectional view of the locking engagement between the deformation locking component and the locking component according to an embodiment of this application; Figure 9 This is a structural schematic diagram of the deformation locking assembly in an unlocked state according to an embodiment of this application; Figure 10 This is a structural schematic diagram of the deformation locking assembly in the locking state according to an embodiment of this application; Figure 11 This is another structural schematic diagram of the deformation locking assembly in an unlocked state according to the embodiments of this application; Figure 12 This is another structural schematic diagram of the locking state of the deformation locking assembly provided in the embodiments of this application.

[0021] Figure label: 100. Quick-release mechanism; 200. Body; 10. Mounting base; 11. Connecting part; 111. Engaging cavity; 112. First mounting hole; 1121. First pressure block; 113. Male connector; 114. Positioning hole; 115. Connecting base; 12. Mounting part; 121. Second mounting hole; 1211. Second pressure block; 122. Rib surface; 20. Arm; 21. Boss; 211. First slot; 212. Locking block; 213. Guide block; 214. Plug-in female; 215. Positioning pin; 30. Pre-locking elastic component; 31. First pin; 311. Limiting surface; 32. First elastic element; 33. First latch; 331. First locking end; 3311. Guide surface; 40. Deformation locking assembly; 41. Pressing element; 411. First through hole; 412. Second through hole; 42. Deformation locking element; 421. Locking hook portion; 422. Third through hole; 423. Relief cavity; 424. Limiting portion; 4241. Locking groove; 43. First rotating shaft; 44. Second rotating shaft; 50. Locking assembly; 51. Second pin; 52. Second elastic element; 53. Second latch; 531. Second locking end; A. First direction; B. Second direction; C. Third direction. Detailed Implementation

[0022] The embodiments of this application are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are merely for explaining this application and are not intended to limit this application.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Please see Figures 1 to 4 This embodiment provides a quick-release mechanism for the arm of a multi-rotor drone. The quick-release mechanism 100 can be used with quadcopters, hexacopter drones, or drones with other numbers of rotors. One quick-release mechanism 100 can correspond to the connection and fixation of one or more rotors. For example, in this embodiment, each quick-release mechanism 100 is used for the installation and fixation of two rotors. The specific design can be selectively chosen according to actual needs. Specifically, the quick-release mechanism 100 includes a mounting base 10, an arm 20, a pre-locking elastic component 30, a deformation locking component 40, and a locking component 50. The mounting base 10 is located on the drone's body 200. It should be understood that the body 200 in this embodiment only shows a conventional structure drone, with a rectangular body. For ease of description, the length direction of the drone's body 200 is defined as the first direction A, the height direction as the second direction B, and the width direction as the second direction B. For details, please refer to [reference needed]. Figure 1 As shown in the image.

[0026] Furthermore, the mounting base 10 can be disposed at opposite ends of the UAV. Since the structures of the mounting base 10, arm 20, pre-locking elastic component 30, deformation locking component 40, and locking component 50 at opposite ends are the same, this embodiment is described from one end of the body 200, and the end face on which the mounting base 10 is mounted in the figure is defined as the front end face. The mounting base 10 is provided with a connecting part 11 and a mounting part 12 adjacent to the connecting part 11. Preferably, the connecting part 11 is located on the front end face of the body 200, and the mounting part 12 is located on the side end face of the body 200. The mounting parts 12 are respectively disposed on two opposite side end faces. The connecting part 11 has a mating cavity 111 along the first direction A, and the connecting part 11 has a first mounting hole 11 extending to the mating cavity 111 along the second direction B. 2. The mounting part 12 has a second mounting hole 121 along the second direction B; the pre-locking elastic component 30 passes through the first mounting hole 112, the deformation locking component 40 is disposed in the mounting part 12, and the locking component 50 passes through the second mounting hole 121. The arm 20 is provided with a boss 21 that can be detachably connected to the mounting base 10. The boss 21 has a first slot 211 on its front end face and a locking block 212 on its side end face. The pre-locking elastic component 30 is configured to be selectively engaged or disengaged from the first slot 211. The deformation locking component 40 is configured to be selectively engaged or disengaged from the locking block 212. The locking component 50 is configured to form a locking engagement with the deformation locking component 40 through linkage after the deformation locking component 40 and the locking block 212 are engaged.

[0027] It should be noted that the first mounting hole 112 and the second mounting hole 121 can be provided in two at intervals on the third direction C, that is, the pre-locking elastic component 30, the deformation locking component 40 and the locking component 50 are designed as a group. Each of the pre-locking elastic component 30, the deformation locking component 40 and the locking component 50 works independently. The pre-locking elastic component 30 can be pressed along the second direction B and can automatically reset after being pressed, thereby controlling the pre-locking elastic component 30 to move up and down at the first locking end 331 of the engagement cavity 111, so as to selectively engage or disengage with the first slot 211; the deformation locking component 40 is rotated by a rotating shaft. The deformation locking assembly 40 is movably connected to the outer wall of the mounting part 12, and the locking hook part 421 of the deformation locking assembly 40 protrudes from the front end face of the mounting base 10 along the first direction A, so that after the arm 20 is docked and installed with the body 200, it can cooperate with the locking block 212 to further lock and fix the arm 20. When the deformation locking assembly 40 completes the locking cooperation with the locking block 212, the locking assembly 50 is automatically locked by the linkage synchronous drive after the deformation locking assembly 40 has completed the locking cooperation with the locking block 212, so that the deformation locking assembly 40 is further fixed after the locking cooperation with the locking block 212.

[0028] It should also be noted that during the installation of the aforementioned quick-release structure, the protrusion 21 of the arm 20 is inserted into the end face of the engagement cavity 111 of the mounting base 10 along the first direction A. After pushing the arm 20 to the preset position, in this process, firstly, the end face of the protrusion 21 will squeeze the pre-locking elastic component 30, causing the first locking end 331 of the pre-locking elastic component 30 to automatically slide into the first slot 211 to achieve engagement, thus completing the pre-locking of the arm 20. At the same time, a "click" can be heard during this process. The system detects whether pre-locking is complete by sound. Then, it operates the deformation locking assembly 40 by external force, causing it to rotate around the pivot and press and engage with the locking block 212 on the side end face of the boss 21, thus achieving a mechanical, gapless lock between the arm 20 and the mounting base 10. After the deformation locking assembly 40 is engaged, the locking assembly 50 automatically forms a locking engagement with the deformation locking assembly 40, restricting its reverse rotation and completing the overall assembly. When disassembling, first release the locking assembly 50, then operate the deformation locking assembly 40 in the reverse direction to disengage it from the locking block 212, and finally release the engagement between the pre-locking elastic assembly 30 and the first slot 211, so that the arm 20 can be pulled out along the first direction A.

[0029] The quick-release mechanism 100 for the UAV arm 20 provided in this embodiment utilizes the engagement cavity 111 of the connecting part 11 to provide a precise assembly space for the protrusion 21 of the arm 20. Combined with the layout adaptation of the first mounting hole 112 and the second mounting hole 121, it enables the pre-locking elastic component 30, the deformation locking component 40, and the locking component 50 to form an orderly linkage. The first slot 211 and the locking block 212 of the protrusion 21 of the arm 20 correspond to the snap-fit ​​positioning of the pre-locking elastic component 30 and the pressing engagement of the deformation locking component 40, respectively, realizing the step-by-step connection of pre-positioning locking and snap-fit ​​fixing. First, component 30 is locked in place with the first slot 211 to provide a reference for subsequent locking and fixing, avoiding assembly deviation. Then, the deformation locking component 40 achieves a tight fit between the arm 20 and the body by pressing the locking block 212. After the deformation locking is in place, the locking component 50 forms a secondary lock through linkage. The three components work together to achieve quick disassembly and assembly without the need for tools, and integrate the convenience of pre-positioning, the gapless locking and the reliability of preventing accidental opening. The resulting dual locking protection and integrated operation effect significantly improve the stability of the arm 20 connection and the ease of use.

[0030] In some embodiments, continue reading Figure 2 and Figure 3Since the arm 20 needs to be completely separated from the body 200, and the power supply battery pack is generally located in the body 200, and the arm 20 is equipped with electrically powered rotors, the power supply connection needs to be considered. In this embodiment, a male connector 113 for electrical connection is provided in the engagement cavity 111. The male connector 113 can be provided with multiple pins arranged along the first direction A. It should be noted that placing the male connector 113 in the engagement cavity 111 ensures the stability of the electrical connection and simplifies the structure of the connection. To further improve the stability of the electrical connection, two pre-locking elastic components 30 are respectively provided on both sides of the male connector 113 in the third direction C. A female connector 214 that mates with the male connector 113 is provided on the front end face of the boss 21. The female connector 214 is provided with multiple electrical connection holes for mates with the pins. The first slots 211 are respectively opened on both sides of the female connector 214 in the third direction C.

[0031] It should be noted that, in order to ensure the stability of the connection, two sets of first slots 211 can be provided. The two sets of first slots 211 are located on both sides of the connector 214 in the third direction C, and multiple first slots 211 can be provided in each set. In this embodiment, two first slots 211 are provided in each set at intervals, and the two first slots 211 are provided at intervals in the second direction B. At the same time, two latches can be provided along the axis on each pre-locking elastic component 30 to achieve a more stable connection and fixation.

[0032] With this configuration, when the boss 21 of the robotic arm 20 is inserted into the mounting base 10 along the first direction A, the female connector 214 on the front end of the boss 21 and the male connector 113 at the bottom of the engagement cavity 111 are simultaneously connected, realizing the electrical connection between the robotic arm 20 and the machine body. At the same time, the pre-locking elastic components 30 on both sides are simultaneously engaged with the first slot 211 at the corresponding position, completing the mechanical pre-positioning of the robotic arm 20. This design allows the electrical connection and mechanical pre-positioning to be completed simultaneously in the same assembly step, eliminating the need for separate electrical docking operations, simplifying the assembly process. Furthermore, the symmetrically arranged pre-locking elastic components 30 can ensure that the robotic arm 20 is subjected to balanced force, avoiding the offset of the robotic arm 20 caused by unilateral positioning, and improving the pre-positioning accuracy and the reliability of the electrical connection.

[0033] Optional, please continue reading Figure 2 and Figure 3 Multiple positioning pins 215 can be provided on the front end face of the boss 21. In this embodiment, two positioning pins 215 are preferably provided at intervals along the third direction C. The two positioning pins 215 are located on both sides of the female connector 214. At the same time, two positioning holes 114 are provided on the front end face of the connecting part 11. By setting the positioning pins 215 and positioning holes 114, the precise docking of the male connector 113 and the female connector 214 is achieved during the installation of the arm 20 with the body 200.

[0034] In some embodiments, see Figure 3 and Figure 5 The pre-locking elastic component 30 includes a first pin 31, a first elastic member 32 sleeved on the first pin 31, and a first latch 33 provided on the first pin 31. The first pin 31 is rotatably restricted through the first mounting hole 112. One end of the first elastic member 32 abuts against a portion of the outer side wall of the first pin 31, and the other end abuts against a portion of the inner side wall of the first mounting hole 112. The first latch 33 is provided with a first locking end 331 extending to the engagement cavity 111, and the first locking end 331 can engage with the first slot 211.

[0035] Specifically, the first latch 33 can be fixed to the first pin 31 by threaded connection, and two first latches 33 can be provided. Of course, other connection and fixing methods can also be used, such as welding, depending on the actual needs. The first elastic element 32 can be a spring structure or other elastic structure. In this embodiment, a spring structure is preferred. In order to limit the two ends of the first elastic element 32, protrusions can be provided in the first mounting hole 112 and on the outer wall of the first pin 31. In order to restrict the rotation of the first pin 31, a detachable first pressure block 1121 can be provided in the area coaxially extending from the first mounting hole 112 into the engagement cavity 111. The first pressure block 1121 is provided with a special groove. At the same time, a limiting surface 311 that cooperates with it can be provided on the first pin 31, so that the first pin 31 is limited circumferentially by the first pressure block 1121.

[0036] It should be noted that both ends of the first elastic member 32 can also be fixed to the first mounting hole 112 and the first pin 31. When the arm 20 is not locked, the first elastic member 32 can be in its original length state. Furthermore, the bottom end of the first pin 31 has reserved space, and the top end extends beyond the top surface of the body 200, thus facilitating automatic locking and unlocking by pressing the first pin 31. When the boss 21 of the arm 20 is not inserted into the engagement cavity 111, the first elastic member 32 is in a naturally extended state, and the first locking end 331 remains extended into the engagement cavity 111. When the boss 21 is inserted into the engagement cavity... When part 11 is pushed to the preset position, the first locking end 331 aligns with the first slot 211, the first elastic member 32 is compressed, and the front end face of the boss 21 pushes and drives the first pin 31 to move along the second direction B, so that the first locking end 331 is inserted into the first slot 211. The locking state is maintained by the continuous elastic pressure of the first elastic member 32, and the pre-locking positioning is achieved. When it is necessary to separate, an external force along the second direction B is applied to drive the first pin 31 to move, compress the first elastic member 32, and drive the first locking end 331 to disengage from the first slot 211, thus releasing the locking positioning. With this design, the rotation restriction of the first pin 31 avoids the buckle from shifting during the locking process, ensuring that the first locking end 331 and the first slot 211 are precisely matched; the first elastic element 32 provides continuous elastic pressure to ensure the stability of the pre-positioning and prevent unexpected disengagement; the component structure is simple and compact, and improves the operational reliability and service life of the pre-locking elastic component 30.

[0037] In some embodiments, see Figures 3 to 5 One end of the first pin 31 protrudes from the top surface of the mounting base 10; the front end face of the first locking end 331 is provided with a guide surface 3311, which can be arc-shaped; the front end face of the boss 21 is provided with a guide block 213 adapted to the guide surface 3311; the guide block 213 is provided at the top of the opening of each first slot 211 and covers part of the opening of the first slot 211; the front end face of the guide block 213 can be provided with an inclined surface, when the machine... When the arm 20 engages with the mounting base 10, the guide block 213 presses the guide surface 3311 along the first direction A to drive the first pin 31 to move downward along the second direction B and compress the first elastic element 32, and cause the first locking end 331 to automatically slide into the first slot 211 for locking engagement; when the arm 20 is separated from the mounting base 10, the first pin 31 protruding from the surface of the mounting base 10 is pressed down by external force to disengage the first locking end 331 from the first slot 211. It should be understood that one end of the first pin 31 protrudes from the top surface of the mounting base 10, forming an external force operating end; the guide surface 3311 of the first locking end 331 is adapted to the guide block 213 on the front end face of the boss 21. When the arm 20 engages with the mounting base 10, the guide block 213 presses the guide surface 3311 along the first direction A, and drives the first pin 31 to move along the second direction B through the inclined plane force conversion, simultaneously compressing the first elastic element 32. When the boss 21 is assembled in place, the first locking end 331 is in the first elastic element 3311. 2. Under the action of the reset force, it automatically slides into the first slot 211 to achieve locking; when disassembling, the protruding end of the first pin 31 is pressed down, driving the first locking end 331 to disengage from the first slot 211 and release the pre-lock; the cooperation between the guide surface 3311 and the guide block 213 realizes the automatic triggering of the pre-lock. The design of unlocking by external force is convenient to operate and does not require tools, thus improving the efficiency of disassembly and assembly; the automatic reset function of the first elastic element 32 ensures the timeliness and reliability of locking and avoids pre-positioning failure caused by improper manual operation.

[0038] In some embodiments, continue reading Figure 2Mounting base 10 has mounting portions 12 at opposite ends on both sides of connecting portion 11. Two deformation locking components 40 are mirror images of each other on the two mounting portions 12. Boss 21 has two locking blocks 212 on opposite side faces that cooperate with the deformation locking components 40. Specifically, the position and size of the two locking blocks 212 correspond one-to-one with the position of the locking hook portions 421 of the two deformation locking components 40, ensuring that the two deformation locking components 40 can cooperate synchronously with the corresponding locking blocks 212. During assembly, the operator simultaneously operates the deformation locking components 40 on both sides, causing the locking hook portions 421 of the two deformation locking components 40 to rotate around their respective axes, synchronously pressing and engaging with the corresponding locking blocks 212 from both sides of the arm 20. The symmetrical pressing force on both sides further fixes the arm 20. During disassembly, the deformation locking components 40 on both sides are operated in reverse simultaneously, causing the locking hook portions 421 to disengage from the locking blocks 212, thus releasing the locking. The mirror layout design ensures that the force on both sides of the arm 20 is balanced when locked, avoiding tilting of the arm 20 or local stress concentration caused by locking on one side. This effectively improves the fit between the arm 20 and the mounting base 10. At the same time, the double-sided locking structure enhances the overall connection strength, which can better resist external loads such as vibration and airflow impact during flight, and further improves the connection stability.

[0039] In some embodiments, please refer to Figure 2 , Figure 6 and Figure 7 The deformation locking assembly 40 includes a pressing member 41 and a deformation locking member 42. The pressing member 41 has a first through hole 411 and a second through hole 412 offset from each other, wherein the first through hole 411 is located at the end of the pressing member 41. The deformation locking member 42 has a locking hook portion 421 and a third through hole 422 offset from each other, wherein the third through hole 422 and the locking hook portion 421 are located at opposite ends of the deformation locking member 42. The pressing member 41 is rotatably connected to the mounting part 12 through a first rotating shaft 43 passing through the first through hole 411. The deformation locking member 42 is rotatably connected to the pressing member 41 through a second rotating shaft 44 coaxially passing through the second through hole 412 and the third through hole 422. When the pressing member 41 is driven to rotate around the first rotating shaft 43, the locking hook portion 421 is pressed and engaged or disengaged from the locking block 212 by lever action.

[0040] Specifically, the pressing member 41 can be a bent plate-like structure, with one end being an operating end for easy pressing by the operator, and the other end having a first through hole 411. A first rotating shaft 43 passes through the first through hole 411 and is rotatably connected to the outer wall of the mounting part 12. The axis of the first rotating shaft 43 is arranged along the second direction B, allowing the pressing member 41 to rotate around the first rotating shaft 43 in a plane perpendicular to the second direction B. A second through hole 412 opened in the middle of the pressing member 41 is staggered from the first through hole 411 along the length of the pressing member 41, and the axis of the second through hole 412 is parallel to the axis of the first through hole 411. The deformable locking member 42 is an arc-shaped plate structure, with a locking hook 421 integrally formed at one end. The locking hook 421 is a bent hook-shaped structure, and its inner side is provided with an inner concave surface that matches the pressing surface of the locking block 212. The third through hole 422 opened at the other end of the deformable locking member 42 and the locking hook 421 are respectively located at the opposite ends of the deformable locking member 42. The second rotating shaft 44 is coaxially inserted through the second through hole 412 of the pressing member 41 and the third through hole 422 of the deformable locking member 42, so that the deformable locking member 42 can rotate relative to the pressing member 41 around the second rotating shaft 44, forming a two-stage rotating connection structure.

[0041] It should be understood that when the arm 20 needs to be locked, the operator presses the operating end of the pressing member 41 towards the mounting base 10, driving the pressing member 41 to rotate around the first rotating shaft 43; when the pressing member 41 rotates, it drives the deformation locking member 42 to move synchronously through the second rotating shaft 44, using the lever principle to amplify the force applied by the operator, causing the locking hook part 421 of the deformation locking member 42 to rotate towards the locking block 212 and to fit against the pressing surface of the locking block 212; if the pressing member 41 is pressed to the limit position, the deformation locking member 42 will undergo elastic deformation under pressure, and the continuous pressing force generated by the deformation will tightly engage the locking hook part 421 with the locking block 212, thus achieving locking; When unlocking is required, the operating end of the pressing member 41 is moved away from the mounting base 10. This lever transmission causes the deformation locking member 42 to rotate in the opposite direction, disengaging the locking hook 421 from the locking block 212. The deformation locking member 42 then returns to its original deformation, releasing the lock. This lever transmission structure reduces the operating force, making locking and unlocking operations easier. Furthermore, the engagement between the locking hook 421 and the concave surface of the locking block 212 increases the contact area, improving the locking stability.

[0042] In some embodiments, continue reading Figure 3 and Figure 6The portion of the deformable locking member 42 between the locking hook portion 421 and the third through hole 422 has an arc-shaped projection profile along the second direction B. The deformable locking member 42 is provided with a relief cavity 423. One end of the pressing member 41 passes through the relief cavity 423 and is rotatably connected to the mounting portion 12 within the arc-shaped enclosed area. Specifically, the main body portion of the deformable locking member 42 between the locking hook portion 421 and the third through hole 422 has an arc-shaped projection profile along the second direction B. The radius of curvature of this arc-shaped profile matches the rotation trajectory of the deformable locking member 42 around the second rotating axis 44, ensuring that the deformable locking member 42 does not interfere with the mounting base 10, the pressing member 41, or other components during rotation. The main body of the deformation locking member 42 has a relief cavity 423. The relief cavity 423 is an elongated through hole, the length of which is consistent with the length of the deformation locking member 42. The width of the relief cavity 423 is greater than or equal to the width of the pressing member 41. One end of the pressing member 41 passes through the relief cavity 423, and the end of the pressing member 41 with the first through hole 411 is rotatably connected to the connecting seat 115 provided on the outer side wall of the mounting part 12, so that the pressing member 41 and the deformation locking member 42 form a nested layout.

[0043] This design ensures smooth rotation of the deformation locking component 42 through its arc-shaped contour, avoiding motion interference and improving the fluidity of the mechanism's movements. The clearance cavity 423 allows the pressing component 41 to pass through the interior of the deformation locking component 42, significantly reducing the overall space occupied by the deformation locking assembly 40, making the mechanism structure more compact, and adapting to the lightweight and miniaturized design requirements of UAVs, while not affecting the movement stroke and transmission efficiency of each component.

[0044] In some embodiments, see Figure 6 and Figure 7 The deformation locking member 42 is provided with a limiting part 424 near the third through hole 422. The limiting part 424 can rotate around the second rotating shaft 44 and has a locking groove 4241 on its end face. The surface of the mounting part 12 is provided with a rib surface 122 on the rotation path of the second rotating shaft 44. The rib surface 122 is adapted to the outer contour of the deformation locking member 42 on the second rotating shaft 44. When the pressing member 41 drives the deformation locking member 42 to rotate to engage with the locking block 212, the outer contour of the deformation locking member 42 on the second rotating shaft 44 abuts against the rib surface 122, thereby avoiding excessive deformation of the deformation locking member 42 and ensuring that the deformation locking member 42 is within a safe deformation range and does not fail due to deformation while the machine body and the machine arm are locked.

[0045] Furthermore, the locking assembly 50 includes a second pin 51, a second elastic member 52 sleeved on the second pin 51, and a second latch 53 provided on the second pin 51; the second pin 51 is rotatably restricted through the second mounting hole 121, one end of the second elastic member 52 abuts against a portion of the outer side wall of the second pin 51, and the other end abuts against a portion of the inner side wall of the second mounting hole 121; the second latch 53 is provided with a second locking end 531 extending to the rotation path of the limiting part 424 and cooperating with the locking groove 4241; the locking groove 4241 is opened along the second direction B on the bottom end face of the limiting part 424; wherein, when the pressing member 41 drives the deformable locking member 42 to rotate to engage with the locking block 212, the limiting part 424 can squeeze the second locking end 531 to drive the second pin 51 to move along the second direction B and compress the second elastic member 52, and cause the second locking end 531 to automatically slide into the locking groove 4241 for locking engagement.

[0046] Specifically, the limiting portion 424 of the deformation locking member 42 rotates synchronously with the deformation locking member 42, and the locking groove 4241 on its bottom end surface is adapted to the second locking end 531 of the locking assembly 50; the limiting portion 424 is a block structure, which can rotate synchronously with the deformation locking member 42 around the second rotating shaft 44; the bottom end surface of the limiting portion 424 is provided with a locking groove 4241 along the second direction B, and the locking groove 4241 is adapted to the second locking end 531; the general structure of the second pin 51 is the same as that of the first pin 31. The main difference is that a second latch 53 is connected to the second pin 51. In order to restrict the rotation of the second pin 51, a special-shaped surface can be provided on part of the surface of the second pin 51, and a second pressure block 1211 can be provided at the extension of the second mounting hole 121. When the second pin 51 passes through the second mounting hole 121, the circumferential rotation is restricted by the cooperation between the second pressure block 1211 and the special-shaped surface, and only movement along the second direction B is allowed, so as to achieve the assembly effect of restricted rotation.

[0047] Furthermore, the second elastic element 52 can be a spring structure, which is sleeved on the outer periphery of the second pin 51. One end of the second elastic element 52 can abut against the annular step on the outer peripheral wall of the second pin 51, and the other end abuts against the limiting boss 21 on the wall of the second mounting hole 121, providing the second pin 51 with an elastic restoring force along the second direction B. The second latch 53 can be fixed to one end of the second pin 51 by thread or welding. Its end extends to form a second locking end 531. The end of the second locking end 531 is a wedge-shaped structure, and the second locking end 531 extends to the rotation path of the limiting part 424 and is adapted to the locking groove 4241 on the bottom end surface of the limiting part 424.

[0048] In one example, see 8 to Figure 10The linkage locking process in this embodiment is as follows: When the pressing member 41 drives the deformation locking member 42 to rotate until the locking hook 421 is fully engaged with the locking block 212, the limiting part 424 of the deformation locking member 42 rotates synchronously with it. The bottom end surface of the limiting part 424 contacts and presses the wedge-shaped surface of the second locking end 531, generating a driving force along the second direction B, driving the second pin 51 to move along the second direction B and compressing the second elastic member 52; when the deformation locking member 421 rotates to rotate until the locking hook 421 is fully engaged with the locking block 212, the limiting part 424 rotates synchronously with it. The bottom end surface of the limiting part 424 contacts and presses the wedge-shaped surface of the second locking end 531, generating a driving force along the second direction B, driving the second pin 51 to move along the second direction B and compressing the second elastic member 52; when the deformation locking member 421 rotates to rotate ... When rotated to the locking limit position, the locking groove 4241 of the limiting part 424 aligns with the second locking end 531. The elastic restoring force of the second elastic member 52 drives the second pin 51 to move in the opposite direction, causing the second locking end 531 to automatically slide into the locking groove 4241, forming a locking engagement. At this time, the second locking end 531 restricts the limiting part 424 from rotating in the opposite direction around the second rotating shaft 44, thereby restricting the reverse movement of the deformation locking member 42, and realizing the secondary locking of the deformation locking assembly 40. This linkage design does not require additional operation of the locking assembly 50, and can automatically complete the secondary locking after the deformation locking assembly 40 is locked in place, effectively avoiding accidental unlocking caused by vibration, impact and other working conditions, and improving the locking reliability.

[0049] When unlocking is required, the locking component 50 can be pressed to disengage the locking groove 4241 of the limiting part 424 from the second locking end 531, and then the deformable locking part 42 can be manually rotated to complete the unlocking.

[0050] In one example, see 11 and Figure 12 To further describe the locking principle of the deformation locking assembly, before the deformation locking member locks, line segment E is outside line segments C and D (relative to the body). As line segment E approaches line segments C and D, the deformation locking member 42 is gradually stretched, simultaneously preventing the pressing member 41 from rotating towards the mounting part 12. When line segment E coincides with line segments C and D, the locking force is at its maximum. At this time, line segment E becomes longer and reaches its longest length, and the deformation of the deformation locking member 42 is at its maximum. As the rotation continues, line segment E moves inward toward the inner side of line segments C and D. This generates a torque toward the mounting part 12. When a click is heard, the deformation locking member 42 contacts the rib surface on the outer contour (R convex surface) of the second rotating shaft 44, preventing the pressing member 41 from rotating toward the mounting part 12. At this time, line segment E is greater than the initial line segment E, meaning that the deformation locking member 42 still has deformation. This ensures that while the machine body and the machine arm are locked, the deformation locking member 42 is within a safe deformation range and will not fail due to deformation.

[0051] In some embodiments, a drone is also provided, the drone including a multi-rotor drone arm quick-release mechanism as described in any of the above embodiments. The quick-release mechanism 100 enables the drone body and arm to achieve the coordinated operation of three mechanisms: elastic linkage pre-locking, mechanical deformation locking, and anti-accidental opening secondary locking during the assembly process.

[0052] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial direction", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the invention.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0054] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0055] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A quick-release mechanism for the arm of a multi-rotor unmanned aerial vehicle (UAV), characterized in that, include: Mounting base, disposed on the body of UAV, the mounting base has a connecting part and a mounting part adjacent to the connecting part, the connecting part has a joint cavity along a first direction, the connecting part has a first mounting hole extending to the joint cavity along a second direction, and the mounting part has a second mounting hole along the second direction; The arm is provided with a boss that can be detachably connected to the connecting part. The boss has a first slot on the front end face and a locking block on the side end face. A pre-locking elastic component is inserted through the first mounting hole, and the pre-locking elastic component is configured to selectively engage or disengage with the first slot. A deformation locking assembly is provided at the mounting portion, and the deformation locking assembly is configured to selectively engage or disengage with the locking block; A locking component is inserted into the second mounting hole. The locking component is configured to form a locking engagement with the deformation locking component through linkage after the deformation locking component and the locking block are engaged.

2. The quick-release mechanism for the arm of a multi-rotor UAV according to claim 1, characterized in that, The mating cavity is provided with a male connector for electrical connection, and two pre-locking elastic components are respectively located on both sides of the male connector in a third direction; and, The boss has a female connector on its front end face that mates with the male connector, and the first slots are respectively opened on both sides of the female connector in the third direction.

3. The quick-release mechanism for the arm of a multi-rotor UAV according to claim 2, characterized in that, The pre-locking elastic component includes a first pin, a first elastic element sleeved on the first pin, and a first latch provided on the first pin. The first pin is rotated in a restricted manner through the first mounting hole, and one end of the first elastic member abuts against a portion of the outer sidewall of the first pin, while the other end abuts against a portion of the inner sidewall of the first mounting hole. The first latch is provided with a first locking end extending into the engagement cavity, and the first locking end can engage with the first slot.

4. The quick-release mechanism for the arm of a multi-rotor UAV according to claim 3, characterized in that, One end of the first pin protrudes from the top surface of the mounting base; the front end face of the first locking end is provided with a guide surface, and the front end face of the boss is provided with a guide block adapted to the guide surface; When the arm engages with the mounting base, the guide block presses the guide surface along the first direction to drive the first pin to move along the second direction and compress the first elastic element, and cause the first locking end to automatically slide into the first slot for locking engagement. When the arm is separated from the mounting base, the first pin protruding from the surface of the mounting base is pressed down by external force, so that the first locking end is disengaged from the first slot.

5. The quick-release mechanism for the arm of a multi-rotor UAV according to claim 1, characterized in that, The mounting base is provided with mounting portions at opposite ends on both sides of the connecting portion, and the two deformation locking components are respectively mirror-displayed on the two mounting portions; the boss is provided with two locking blocks that cooperate with the deformation locking components on opposite side end faces.

6. The quick-release mechanism for the arm of a multi-rotor UAV according to claim 5, characterized in that, The deformation locking assembly includes a pressing element and a deformation locking element; The pressing member has a first through hole and a second through hole offset from each other, wherein the first through hole is located at the end of the pressing member; The deformation locking member is provided with a locking hook portion and a third through hole offset from each other, wherein the third through hole and the locking hook portion are respectively located at opposite ends of the deformation locking member; The pressing member is rotatably connected to the mounting part through a first rotating shaft passing through the first through hole. The deformation locking member is rotatably connected to the pressing member through a second rotating shaft passing through the second through hole and the third through hole in sequence. When the pressing member is driven to rotate around the first rotating shaft, the locking hook part is pressed and engaged or separated from the locking block by lever action.

7. The quick-release mechanism for the arm of a multi-rotor UAV according to claim 6, characterized in that, The portion of the deformable locking member between the locking hook and the third through hole has an arc-shaped projection profile along the second direction, and the deformable locking member is provided with a relief cavity. One end of the pressing member passes through the relief cavity and is rotatably connected to the mounting part within the arc-shaped enclosed area.

8. The quick-release mechanism for the arm of a multi-rotor UAV according to claim 6, characterized in that, The deformation locking member is provided with a limiting part near the third through hole. The limiting part can rotate around the second rotating shaft and has a locking groove on its end face. The locking assembly includes a second pin, a second elastic element sleeved on the second pin, and a second latch provided on the second pin; The second pin is rotated in a restricted manner through the second mounting hole. One end of the second elastic member abuts against a portion of the outer side wall of the second pin, and the other end abuts against a portion of the inner side wall of the second mounting hole. The second latch is provided with a second locking end that extends to the rotation path of the limiting part and cooperates with the locking groove.

9. The quick-release mechanism for the arm of a multi-rotor UAV according to claim 8, characterized in that, The locking groove is formed on the bottom end face of the limiting part along the second direction, and the surface of the mounting part is provided with a rib surface on the rotation path of the second rotating shaft. The rib surface is adapted to the outer contour of the deformable locking member on the second rotating shaft. When the pressing member drives the deformation locking member to rotate until it engages with the locking block, the deformation locking member abuts against the rib surface on the outer contour of the second rotating shaft; the limiting part can squeeze the second locking end to drive the second pin to move along the second direction and compress the second elastic member, and cause the second locking end to automatically slide into the locking groove for locking engagement.

10. A drone, characterized in that, The drone includes a quick-release mechanism for the arms of a multi-rotor drone as described in any one of claims 1-9.

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