New Quick Release Device and Drone

Abstract

An embodiment of the present invention discloses a novel quick-release device, which is applied to the field of unmanned aerial vehicle technology. The novel quick-release device includes a quick-release fastener assembly fixed with an unmanned aerial vehicle blade and a quick-release base assembly fixed on an unmanned aerial vehicle motor. The quick-release base assembly includes a first hook portion that elastically moves in the horizontal direction; the quick-release fastener assembly includes a second hook portion and a locking structure that elastically limits the movement in the vertical direction; by hooking the second hook portion with the first hook portion when the first hook portion is compressed in the horizontal direction and hooking the second hook portion tightly with the first hook portion when the first hook portion is relaxed in the horizontal direction, the quick-release fastener assembly and the quick-release base assembly are detachably connected; when the locking structure is pressed to a target limiting position in the vertical direction, the quick-release fastener assembly and the quick-release base assembly that are connected together are limited and locked. Also disclosed is an unmanned aerial vehicle. The novel quick-release device and the unmanned aerial vehicle can realize the quick disassembly and assembly of the unmanned aerial vehicle blade.

Description

Technical Field

[0001] The present invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to a novel quick-release device and an unmanned aerial vehicle. Background Art

[0002] With the development of unmanned aerial vehicle technology, the application of unmanned aerial vehicles is becoming more and more extensive. In many cases, it is necessary to quickly disassemble and assemble the propellers of unmanned aerial vehicles. Therefore, corresponding quick-release devices have emerged. The quick-release device is first connected to the propeller and then installed on the motor of the unmanned aerial vehicle, and generally has the characteristics of convenient and quick disassembly and assembly.

[0003] However, the existing quick-release devices are generally connected to the motor of the unmanned aerial vehicle through a simple clamping structure, with an unstable structure and inconvenient and inefficient operation. Summary of the Invention

[0004] The present invention provides a novel quick-release device and an unmanned aerial vehicle, aiming to solve the problems of unstable installation structure and inconvenient and inefficient disassembly and assembly operation when disassembling and assembling the propellers of unmanned aerial vehicles.

[0005] An embodiment of the present invention provides a novel quick-release device for disassembling and assembling an unmanned aerial vehicle propeller from an unmanned aerial vehicle motor, including:

[0006] A quick-release fastener assembly fixed with the unmanned aerial vehicle propeller and a quick-release base assembly fixed on the unmanned aerial vehicle motor; wherein, the quick-release base assembly includes a first engaging portion that elastically moves in the horizontal direction; the quick-release fastener assembly includes a second engaging portion and a locking structure that elastically limits and moves in the vertical direction; by hooking the second engaging portion with the first engaging portion when the first engaging portion is compressed in the horizontal direction and hooking the second engaging portion tightly with the first engaging portion when the first engaging portion is relaxed in the horizontal direction, so that the quick-release fastener assembly and the quick-release base assembly are detachably connected; when the locking structure is pressed to a target limiting position in the vertical direction, the quick-release fastener assembly and the quick-release base assembly that are connected together are limited and locked.

[0007] An embodiment of the present invention further provides an unmanned aerial vehicle including the above novel quick-release device.

[0008] As can be seen from the above embodiments of the present invention, the quick-release fastener assembly fixed with the drone blade includes a first engaging portion that can elastically move in the horizontal direction. The quick-release base assembly fixed on the drone motor includes a second engaging portion and a locking structure that can elastically limit the movement in the vertical direction. When the first engaging portion is compressed in the horizontal direction, the second engaging portion snaps into the first engaging portion. When the first engaging portion is released, the second engaging portion hooks tightly with the first engaging portion, so that the quick-release fastener assembly and the quick-release base assembly are detachably hooked together. When the locking structure is pressed in the vertical direction to the target limiting position, the quick-release fastener assembly and the quick-release base assembly that are locked together are limited, so that the drone blade and the drone motor are installed together and are not easy to slip off. The connection structure is more stable, the installation is fast and convenient. When disassembling, lift the locking structure in the quick-release fastener assembly upward and compress the first engaging portion in the horizontal direction, and the quick-release fastener assembly and the quick-release base assembly can be disassembled, so that the drone blade can be quickly removed from the drone motor, and the disassembly is fast and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention.

[0010] Figure 1 Schematic diagram of the assembly structure of the novel quick-release device provided by the embodiment of the present invention with the drone blade and the drone motor;

[0011] Figure 2 For Figure 1 Partial enlarged schematic diagram of the assembly structure diagram in

[0012] Figure 3 Exploded view of the quick-release fastener assembly and the drone blade in the novel quick-release device provided by the embodiment of the present invention;

[0013] Figure 4 For Figure 3 Partial enlarged schematic diagram of

[0014] Figure 5 Partial structure schematic diagram of the quick-release fastener assembly in the novel quick-release device provided by the embodiment of the present invention;

[0015] Figure 6 Another partial structure schematic diagram of the quick-release fastener assembly in the novel quick-release device provided by the embodiment of the present invention;

[0016] Figure 7 Schematic diagram of the assembly structure of the quick-release fastener assembly and the drone blade in the novel quick-release device provided by the embodiment of the present invention;

[0017] Figure 8is Figure 7 a partially enlarged schematic diagram of the assembly structure diagram in

[0018] Figure 9 an exploded view of the quick-release base assembly and the drone motor in the novel quick-release device provided by the embodiment of the present invention;

[0019] Figure 10 an assembly structure diagram of the quick-release base assembly and the drone motor in the novel quick-release device provided by the embodiment of the present invention. Detailed implementation manners

[0020] To make the objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] The novel quick-release device provided by the present invention can be widely applied to the disassembly and assembly between two components. For example, the first component can be quickly installed on the second component, and the first component can be quickly removed from the second component. According to the differences between the two components, the structure of the joint between the component and the novel quick-release device can be adjusted to make the structure adapt to the shape of the component. The novel quick-release device includes a quick-release fastener assembly and a quick-release base assembly. Among them, the first component is fixed on the quick-release fastener assembly, and the quick-release base assembly is fixed on the second component. Through the quick assembly and disassembly of the quick-release fastener assembly and the quick-release base assembly, the quick disassembly and assembly of the first component and the second component are realized. For the convenience of description, in the following embodiments, the first component is taken as an example of a drone blade, and the second component is taken as an example of a drone motor, which does not limit other application scenarios.

[0022] See Figures 1 to 10 , Figure 1 an assembly structure diagram of the novel quick-release device provided by the embodiment of the present invention, the drone blade, and the drone motor; Figure 2 is Figure 1 a partially enlarged schematic diagram of the assembly structure diagram in Figure 3 an exploded view of the quick-release fastener assembly and the drone blade in the novel quick-release device provided by the embodiment of the present invention; Figure 4 is Figure 3 a partially enlarged schematic diagram of Figure 5 a partial structure schematic diagram mainly taking a lock as the main part in the quick-release fastener assembly of the novel quick-release device provided by the embodiment of the present invention; Figure 6 a partial structure schematic diagram mainly taking a quick-release fastener as the main part in the quick-release fastener assembly of the novel quick-release device provided by the embodiment of the present invention; Figure 7Schematic diagram of the assembly structure of the quick-release fastener assembly and the drone blade in the new quick-release device provided by the embodiment of the present invention; Figure 8 is Figure 7 a partial enlarged schematic diagram of the assembly structure diagram in; Figure 9 Explosion diagram of the quick-release base assembly and the drone motor in the new quick-release device provided by the embodiment of the present invention; Figure 10 Schematic diagram of the assembly structure of the quick-release base assembly and the drone motor in the new quick-release device provided by the embodiment of the present invention. This new quick-release device is used to quickly disassemble and install the drone blade from the drone motor. This new quick-release device mainly includes:

[0023] Quick-release fastener assembly 10 and quick-release base assembly 20;

[0024] Among them, the drone blade 30 is fixed on the quick-release fastener assembly 10, the quick-release base assembly 20 is fixed on the drone motor 40, and the quick-release fastener assembly 10 is detachably fixed together with the quick-release base assembly 20.

[0025] The quick-release base assembly 20 includes a first engaging portion 21 that elastically moves in the horizontal direction. Specifically, the quick-release base assembly 20 has an elastic member with a horizontal elastic force, which interacts with the first engaging portion 21 and applies a pressing force along the horizontal direction of the first engaging portion 21. When the pressing force is greater than the elastic force, the first engaging portion 21 moves in the horizontal direction towards the direction of the pressing force; when the pressing force is reduced and the pressing force is less than the elastic force, the first engaging portion 21 moves in the horizontal direction towards the opposite direction of the pressing force.

[0026] The quick-release fastener assembly 10 includes a second engaging portion 11 and a locking structure that elastically limits the movement in the vertical direction.

[0027] When the first engaging portion 21 is compressed in the horizontal direction, the second engaging portion 11 can hook the first engaging portion 21; when the first engaging portion 21 is relaxed in the horizontal direction, the second engaging portion 11 is hooked tightly with the first engaging portion 21, so that the quick-release fastener assembly 10 and the quick-release base assembly 20 are detachably hooked together. When the locking structure is pressed to the target limiting position in the vertical direction, the connected quick-release fastener assembly 10 and quick-release base assembly 20 can be limited and locked, making it difficult for the two to slip off and the connection structure more stable.

[0028] In this embodiment, the quick-release fastener assembly fixed with the drone blade includes a first engaging portion that can elastically move in the horizontal direction. The quick-release base assembly fixed on the drone motor includes a second engaging portion and a locking structure that can elastically limit and move in the vertical direction. When the first engaging portion is compressed in the horizontal direction, the second engaging portion snaps into the first engaging portion. When the first engaging portion is released, the second engaging portion hooks tightly with the first engaging portion, so that the quick-release fastener assembly and the quick-release base assembly are detachably hooked together. When the locking structure is pressed vertically to the target limit position, the quick-release fastener assembly and the quick-release base assembly that are locked and connected together are limited, so that the drone blade and the drone motor are installed together and are not easy to slip off, the connection structure is more stable, the installation is fast and convenient. When disassembling, lift the locking structure in the quick-release fastener assembly upward and compress the first engaging portion in the horizontal direction, and the quick-release fastener assembly and the quick-release base assembly can be disassembled, so that the drone blade can be quickly removed from the drone motor, and the disassembly is fast and convenient.

[0029] Further, the quick-release fastener assembly 10 includes: a quick-release fastener 12 having a first elastic limiting structure, and a lock 13 having a second elastic limiting structure and a blocking limiting structure. The first elastic limiting structure, the second elastic limiting structure and the blocking limiting structure cooperate with each other, so that the lock 13 elastically limits and moves relative to the quick-release fastener 12 in the vertical direction, that is, the first elastic limiting structure, the second elastic limiting structure and the blocking limiting structure constitute the locking structure; and when pressed vertically downward to the first limit position, the blocking limiting structure blocks the quick-release fastener assembly 10 from detaching from the quick-release base assembly 20, and the first limit position is the above-mentioned target limit position. And when the lock 13 is pulled vertically upward to the second limit position, the blocking of the quick-release fastener assembly 10 from detaching from the quick-release base assembly 20 is released.

[0030] Specifically, the first elastic limiting structure is located on the quick-release fastener 12 and includes: a machine screw 51, a first steel ball 52, a second steel ball 53, a first spring 54 and a first spring groove (not shown in the figure). The first steel ball 52, the second steel ball 53 and the first spring 54 are located in the first spring groove. The first steel ball 52 and the second steel ball 53 are respectively located at both ends of the first spring 54. The first spring groove is located in the quick-release fastener 12 and inside the second engaging portion 11. More specifically, each end of the quick-release fastener 12 has a second engaging portion 11. A groove 80 for placing the drone blade is provided on the upper surface of the quick-release fastener 12. A first spring groove is provided in the fastener body of the quick-release fastener 12 between the second engaging portion 11 and the groove 80.

[0031] Snap the lock 13 vertically downward with the quick-release fastener 12 and fix it with the machine screw 51. The machine screw 51 is coaxial with the first steel ball 52, the first spring 54 and the second steel ball 53.

[0032] The buckle 13 includes an I-shaped holding portion 131 and four locking portions 132 vertically and fixedly connected to the four corners of the holding portion. The blocking and limiting structure is the end 133 of the four locking portions, which has a notch facing the second engaging portion 11. Preferably, the shape of the notch matches the outer shape of the first engaging portion 21. The ends 133 of the four locking portions cooperate with the second engaging portion 11 to block and limit the first engaging portion 21, making the connection between the first engaging portion 21 and the second engaging portion 11 more firm, and the structure of the quick-release fastener assembly 10 and the quick-release base assembly 20 stable after connection and not easily detached.

[0033] The second elastic limiting structure is located on the buckle 13 and includes: a first limiting groove 611 and a plurality of vertically arranged limiting holes. In this embodiment, two limiting holes are taken as an example. The first limiting hole 612 is the above-mentioned first limiting position, and the second limiting hole 613 is the above-mentioned second limiting position. The first limiting hole 612 is located above the second limiting hole 613.

[0034] The first limiting groove 611 is arranged on one of the locking portions 132 at one end of the horizontal line in the I-shaped holding portion 131, and the two limiting holes are arranged on one of the locking portions 132 at the other end of the horizontal line in the I-shaped holding portion 131. The machine screw 51 is located in the first limiting groove 611 and elastically limits and moves up and down in the first limiting groove 611 under the cooperation of the first steel ball 52, the first spring 54 and the second steel ball 53. Specifically, the diameter of the first steel ball 52 is larger than the diameters of the first limiting hole 612 and the second limiting hole 613, and it can expose the two limiting holes but will not fall out from them. The user can press the exposed part of the first steel ball 52 with one finger, making the first steel ball 52 press the first spring 54 inward, and press the machine screw 51 with the other finger. The machine screw 51 abuts against the second steel ball 53, making the first spring 54 continue to be compressed. Thus, the first steel ball 52, the first spring 54, the second steel ball 53 and the machine screw 51 can, under the control of the user, release the limiting control by the current limiting hole, and the first steel ball 52 at one end moves up and down between the two limiting holes. Correspondingly, the machine screw 51 at the other end moves up and down in the first limiting groove 611, realizing the up and down movement of the buckle 13 relative to the quick-release fastener 12.

[0035] Further, four guide grooves 121 are provided on the side of the quick-release fastener 12, and each guide groove 121 is pressed into one of the locking portions 132. This can improve the convenience and structural stability of pressing the buckle 13 into the quick-release fastener 12.

[0036] Further, both ends of the quick-release fastener 12 have second engaging portions 11 extending in the opposite direction to the drone blade 30 and bending inward. The second engaging portion 11 includes four hook feet.

[0037] Further, the quick-release fastener assembly 10 further includes a gasket 14 and a screw 15. The upper surface of the quick-release fastener 12 is provided with a groove 80 for accommodating the drone blade 30. The groove 80, the drone blade 30, and the gasket 14 are all provided with screw holes corresponding to each other in position. In the exact middle of the bottom surface of the groove 80, a limiting post (not marked in the figure) is provided, which is located between the two screw holes shown in the figure and is used to match the limiting hole (not marked in the figure) on the drone blade 30. The drone blade 30 and the gasket 14 are fixed in the groove 80 by the screw 15. The gasket 14 is located on the upper surface of the drone blade 30, and the gripping portion 131 of the lock 13 is located above the gasket 14.

[0038] In the up-and-down order of the gasket 14, the drone blade 30, and the quick-release fastener 12, the drone blade 30 is fixed between the gasket 14 and the quick-release fastener 12 by the screw 15, and the drone blade 30 is fitted into the accommodating space of the groove 80. The drone blade 30 is not easily separated from the quick-release fastener 12, improving the assembly stability between the drone blade 30 and the quick-release fastener 12.

[0039] The quick-release base assembly 20 includes a quick-release base 22, a button 23, a second spring 24, and a first engaging portion 21. The quick-release base assembly 20 is fixed to the drone motor 40 by screws.

[0040] Among them, the second spring 24 is the elastic member with a horizontal elastic force in the above-mentioned embodiment. Second spring grooves 25 are respectively provided at both ends of the quick-release base 22. The second spring 24 and the button 23 are placed in the second spring grooves 25. The button 23 contacts and presses the second spring 24 in the second spring grooves 25. The button 23 has a button hole 26 penetrating through the button body;

[0041] Second limiting grooves 27 are provided at both ends of the quick-release base 22 in a direction perpendicular to the second spring grooves 24. The first engaging portion 21 is specifically a steel shaft. The steel shaft passes through the button hole 26 and is limited at both ends of the quick-release base 22 by the button hole 26 and the second limiting grooves 27. A limiting groove is provided at the middle position of the steel shaft for engaging and limiting one end of the second spring 25, which is beneficial to the stability of the assembly. The steel shaft slides back and forth horizontally in the second limiting grooves 27 along with the pressing and releasing of the button 23. When the button 23 is pressed, the second spring 24 slides along both ends of the quick-release base 22 in the pressing direction, pushing the steel shaft to also slide in the second limiting grooves 27 in the pressing direction. When the button 23 is released, the steel shaft slides in the second limiting grooves 27 in the opposite direction of the pressing to achieve reset.

[0042] Further, the second engaging portion 11 of the quick-release fastener 12 includes four hook feet respectively located at both ends of the quick-release fastener 12. There is a hollow portion between the two hook feet at each end, and the hollow portion matches both ends of the quick-release base 20.

[0043] It should be noted that both the quick-release fastener assembly 10 and the quick-release base assembly 20 have a symmetric structure at both ends. The structures described above from one end also have the same structure at the opposite end, so they will not be elaborated here.

[0044] The working principle of this new quick-release device is as follows:

[0045] First, quickly install the drone blade 30 on the drone motor 40: First, in the order of the gasket 14, the drone blade 30, and the quick-release fastener 12 from top to bottom, fix the drone blade 30 between the gasket 14 and the quick-release fastener 12 through the screw 15, and the drone blade 30 is fitted into the accommodation space of the groove 80. Put the first steel ball 52, the first spring 54, and the second steel ball 53 into the first spring groove in sequence, press the lock 13 into the quick-release fastener 12, and fix the lock 13 and the quick-release fastener 12 with the setscrew 51. After the setscrew 51 is tightened, it is located in the first limit groove 611 on the side of the lock 13. Thus, the quick-release fastener assembly 10 is assembled.

[0046] Further, put two second springs 24 into the second spring grooves 25 at both ends of the quick-release base 22, buckle the button 23, the button 23 contacts and presses the second spring 24 in the second spring groove 25, pass the steel shaft 21 through the button hole 26 of the button 23 and the second limit groove 27, and fix it with a setscrew. Thus, the quick-release base assembly 20 is assembled.

[0047] Apply an opposite pressing force to both ends of the two buttons 23 of the quick-release base assembly 20, drive the two steel shafts to approach each other, so that the distance between the two steel shafts is less than the distance between the two hook feet of the second engaging part 11 of the quick-release fastener assembly 10 at the same end, and snap the second engaging part 11 onto the steel shaft. Then, release the button 23. Under the action of the restoring force of the second spring 24, the steel shafts slide back to the outermost side of the second limit groove 25 respectively. When the two steel shafts respectively abut against the inner side of the bending part of the hook foot towards the lower surface of the quick-release fastener 12, stop sliding. At this time, the second engaging part 11 is hooked together with the steel shaft, so that the quick-release fastener assembly 10 and the quick-release base assembly 20 are fixed together, and the drone blade 30 is installed on the drone motor 40. At this time, press the setscrew 51 in the first limit groove 611 of the lock 13, as well as the first steel ball 52, the first spring 54, and the second steel ball 53, so that the setscrew 51 moves downward in the first limit groove 611. At the same time, the first steel ball 52, the first spring 54, and the second steel ball 53 enter the first limit hole 612, so that the ends 133 of the four locking parts of the lock 13 face the notch of the steel shaft to form a blocking limit for the steel shaft, making the connection between the second engaging part 11 and the steel shaft more firm, and the structure of the quick-release fastener assembly 10 and the quick-release base assembly 20 is stable after connection and not easy to disengage.

[0048] The disassembly process is carried out in the reverse direction of the above process. Press to move the machine screw 51, the first steel ball 52, the first spring 54, and the second steel ball 53 in the first limiting groove 611 of the buckle 13, so that the machine screw 51 can move upward in the first limiting groove 611. At the same time, lift the buckle 13 upward, then the first steel ball 52, the first spring 54, and the second steel ball 53 enter the second limiting hole 613, releasing the blocking limit on the steel shaft. Then press the button 23 horizontally to disconnect the second engaging portion 11 from the steel shaft, completing the separation of the quick-release fastener assembly 10 and the quick-release base assembly 20, so that the drone blade can be removed from the drone motor. The disassembly is convenient and easy to operate.

[0049] This embodiment also provides a drone, including the novel quick-release device as described above, for disassembling and assembling the drone blades.

[0050] In this embodiment, the quick-release fastener assembly fixed with the drone blade includes a first engaging portion that can elastically move in the horizontal direction, and the quick-release base assembly fixed on the drone motor includes a second engaging portion and a locking structure that can elastically limit and move in the vertical direction. When the first engaging portion is compressed in the horizontal direction, the second engaging portion snaps into the first engaging portion. When the first engaging portion is released, the second engaging portion hooks tightly with the first engaging portion, so that the quick-release fastener assembly and the quick-release base assembly are detachably hooked together. When the locking structure is pressed vertically to the target limiting position, the quick-release fastener assembly and the quick-release base assembly locked together are limited and locked, so that the drone blade and the drone motor are installed together and are not easy to slip off, the connection structure is more stable, the installation is fast and convenient. When disassembling, lift the locking structure in the quick-release fastener assembly upward and compress the first engaging portion in the horizontal direction, and the quick-release fastener assembly and the quick-release base assembly can be disassembled, so that the drone blade can be quickly removed from the drone motor, and the disassembly is fast and convenient.

[0051] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0052] The above is the description of the novel quick-release device and the drone provided by the present invention. For those skilled in the art, according to the idea of the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A novel quick-release device for disassembling and assembling a drone blade from a drone motor, characterized in that, include: A quick-release fastener assembly fixed with the drone blades and a quick-release base assembly fixed on the drone motor; Wherein, the quick-release base assembly comprises a first hooking portion that elastically moves in a horizontal direction; The quick-release fastener assembly includes a second hooking portion and a locking structure that elastically limits movement in the vertical direction; The second hooking portion is hooked with the first hooking portion when the first hooking portion is compressed in the horizontal direction, and is hooked with the first hooking portion when the first hooking portion is relaxed in the horizontal direction, so that the quick-release fastener assembly is detachably connected to the quick-release base assembly; When the locking structure is pressed to the target limiting position in the vertical direction, the quick release fastener assembly and the quick release base assembly connected together are locked in position; the quick release fastener assembly includes: a quick release fastener with a first elastic limiting structure, and a lock buckle with a second elastic limiting structure and a blocking limiting structure; The first elastic limiting structure, the second elastic limiting structure and the blocking limiting structure cooperate with each other, so that the lock buckle elastically limits movement relative to the quick-release fastener in the vertical direction, and when being vertically pressed downward to the first limiting position, the blocking limiting structure blocks the quick-release fastener assembly from separating from the quick-release base assembly, and when being vertically pulled upward to the second limiting position, the blocking limiting structure releases the blocking of the quick-release fastener assembly from separating from the quick-release base assembly; the first elastic limiting structure is located on the quick-release fastener, and includes: a machine screw, a first steel ball, a second steel ball, a first spring and a first spring groove; The first steel ball, the second steel ball and the first spring are located in the first spring groove, the first steel ball and the second steel ball are located at two ends of the first spring respectively, and the first spring groove is located in the quick release fastener and is located on the inner side of the second hooking portion; The machine screw fixes the lock buckle on the quick-release fastener, and the machine screw is coaxial with the first steel ball, the first spring and the second steel ball; the lock buckle includes an I-shaped gripping portion and four locking portions vertically fixedly connected to the four corners of the gripping portion, the blocking and limiting structure is the end of the locking portion, and has a notch facing the second hooking portion, and the end of the locking portion cooperates with the second hooking portion to form a blocking and limiting function for the first hooking portion; the second elastic limiting structure is located on the lock buckle, and includes: a first limiting groove and a plurality of vertically arranged limiting holes; there are two limiting holes, and the limiting holes include a first limiting hole and a second limiting hole, and the first limiting hole is located above the second limiting hole; The first limiting groove is arranged on a locking part at one end of the I-shaped horizontal line of the holding part, and the plurality of limiting holes are arranged on the locking part at the other end of the I-shaped horizontal line of the holding part. The machine screw is located in the first limiting groove, and with the cooperation of the first steel ball, the first spring and the second steel ball, it elastically limits and moves up and down in the first limiting groove; the diameter of the first steel ball is larger than the diameters of the first limiting hole and the second limiting hole.

2. The novel quick-release device according to claim 1, wherein Four guide grooves are provided on the side of the quick-release fastener, and one of the locking parts is pressed into each of the guide grooves.

3. The novel quick-release device according to claim 2, characterized in that, Both ends of the quick-release fastener have the second engaging parts that extend in the opposite direction to the drone blade and bend inward, and the second engaging parts include four hook feet.

4. The novel quick-release device according to claim 3, characterized in that, The quick-release fastener assembly further includes a gasket and a screw; The upper surface of the quick-release fastener has a groove for accommodating the drone blade. Corresponding screw holes are provided on the groove, the drone blade and the gasket. The drone blade and the gasket are fixed in the groove by the screw. The gasket is located on the upper surface of the drone blade, and the holding part of the lock is located above the gasket.

5. The novel quick-release device according to claim 4, wherein, The quick-release base assembly includes: a quick-release base, a button, a second spring and the first engaging part; Second spring grooves are respectively provided at both ends of the quick-release base. The second spring and the button are placed in the second spring grooves. The button contacts and presses the second spring in the second spring groove. The button has a button hole penetrating through the button body; Second limiting grooves are provided at both ends of the quick-release base in a direction perpendicular to the second spring grooves. The first engaging part is limited at both ends of the quick-release base by the button hole and the second limiting grooves, and slides back and forth horizontally in the second limiting grooves with the pressing and releasing of the button.

6. A drone, characterized in that, A novel quick-release device as described in claims 1 to 5 above is included, which is used for disassembling and assembling the drone blade.

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