Pressing rotary type motor propeller quick release mechanism and aircraft

Abstract

The utility model discloses a pressing rotary type motor propeller quick release mechanism and an aircraft, and relates to the field of unmanned aerial vehicles. The buckle base assembly is used for being fixedly connected to a motor rotor. The buckle top plate assembly is used for fixedly connecting a propeller; the buckle base assembly is symmetrically provided with at least one pair of plunger pressing rods capable of moving in the radial direction in the circumferential direction, and each plunger pressing rod is fixedly provided with a pressing plate pin extending in the vertical direction. An elastic reset piece is arranged between the plunger pressing rod and the buckle base assembly, so that the plunger pressing rod has the trend of moving outwards in the radial direction. L-shaped guide pin grooves matched with the pressing plate pins are correspondingly formed in the two sides of the buckle top plate assembly, and each L-shaped guide pin groove comprises a mounting guide-in groove and a locking limiting groove communicated with the mounting guide-in groove; and an axial elastic pushing structure is arranged between the buckle top plate assembly and the buckle base assembly. The propeller can be rapidly disassembled and assembled through pressing-rotating, the deployment and maintenance efficiency of a power system is improved, and the risk of accidents caused by misoperation is reduced.

Description

Technical Field

[0001] This application relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a press-and-rotate motor propeller quick-release mechanism and an aircraft. Background Technology

[0002] As the application scenarios of drones continue to expand, higher demands are placed on the rapid deployment and maintenance of their power systems. Traditional propellers are mostly fixed with bolts, which is inefficient to assemble and disassemble and requires special tools. This makes them inconvenient to operate in restricted environments such as the field, and can easily lead to flight accidents due to inadequate tightening or operational errors. In addition, the propellers of large drones are either non-removable or difficult to disassemble, resulting in large transport packaging volume and high costs.

[0003] Currently available quick-release mechanisms mostly use direct plug-in or single buckle forms, which have problems such as insufficient locking force and easy loosening, and their reliability is difficult to guarantee, especially in high-speed rotation and vibration environments. Utility Model Content

[0004] This application provides a quick-release mechanism for a press-and-rotate motor propeller and an aircraft, which solves the problems mentioned in the background art.

[0005] In a first aspect, embodiments of this application provide a quick-release mechanism for a press-and-rotate motor propeller, comprising: a snap-fit ​​base assembly for fixedly connecting to a motor rotor; a snap-fit ​​top plate assembly for fixedly connecting to a propeller; the snap-fit ​​base assembly is symmetrically provided with at least one pair of radially movable plunger rods along the circumferential direction, each plunger rod being fixedly provided with a vertically extending pressure plate pin; an elastic reset member is provided between the plunger rod and the snap-fit ​​base assembly, causing the plunger rod to have a tendency to move radially outward; the snap-fit ​​top plate assembly is provided with L-shaped guide pin grooves on both sides corresponding to the pressure plate pins, the L-shaped guide pin grooves including an installation guide groove and a groove communicating therewith. The locking and limiting groove; an axial elastic pushing structure is provided between the snap-on top plate assembly and the snap-on base assembly; during installation, the snap-on top plate assembly is placed on the snap-on base assembly, the plunger rod is pressed to make the pressure plate pin radially retract, and the pressure plate pin is aligned with the installation guide groove by relative rotation; then the snap-on top plate assembly is pressed down and rotated further, so that the pressure plate pin slides from the installation guide groove into the locking and limiting groove along the L-shaped guide pin groove. Under the combined action of the axial pressing force of the elastic pushing structure and the elastic reset member driving the pressure plate pin to lock in the locking and limiting groove, the snap-on top plate assembly and the snap-on base assembly are locked.

[0006] In conjunction with the first aspect, in one possible implementation, the bottom center of the snap-on top plate assembly is provided with a first multi-tooth thrust protrusion; the top center of the snap-on base assembly is provided with a second multi-tooth thrust groove that matches the first multi-tooth thrust protrusion, and a second multi-tooth thrust protrusion is formed between the second multi-tooth thrust grooves; the elastic push structure includes a plunger sleeve disposed within the first multi-tooth thrust protrusion, and a plunger spring disposed on the top of the plunger sleeve and acting on the plunger sleeve to give it a downward extension tendency; when the snap-on top plate assembly is rotated and locked, the bottom end of the plunger sleeve is pressed against the corresponding shoulder surface on the snap-on base assembly, and at the same time, the top of the first multi-tooth thrust protrusion abuts against the bottom of the second multi-tooth thrust protrusion.

[0007] In conjunction with the first aspect, in one possible implementation, both the first multi-tooth thrust protrusion and the second multi-tooth thrust protrusion are quincunx-shaped structures; the second multi-tooth thrust groove is a quincunx-shaped groove; the bottom of the second multi-tooth thrust protrusion is provided with a first guide slope, and the top of the first multi-tooth thrust protrusion is correspondingly provided with a second guide slope that cooperates with it.

[0008] In conjunction with the first aspect, in one possible implementation, the sidewall of the plunger sleeve is connected to the snap-on top plate assembly via a plunger pin, and the snap-on top plate assembly is provided with an oblong hole that allows the plunger pin to move up and down, thereby restricting the plunger sleeve from moving axially.

[0009] In conjunction with the first aspect, in one possible implementation, the snap-fit ​​base assembly includes a base body, the base body having a plunger groove for accommodating the plunger rod and a spring cavity for accommodating the elastic reset member.

[0010] In conjunction with the first aspect, in one possible implementation, the installation guide groove is a through-hole structure that penetrates the side wall of the snap-on top plate assembly.

[0011] Secondly, embodiments of this application provide an aircraft including the press-and-rotate motor propeller quick-release mechanism described in the first aspect or any possible implementation of the first aspect.

[0012] One or more technical solutions provided in the embodiments of this application have at least the following technical effects:

[0013] The press-and-rotate motor propeller quick-release mechanism of this application requires no special tools and allows for rapid assembly and disassembly of the propeller through a simple "press-and-rotate" motion. This improves the deployment and maintenance efficiency of the power system and reduces the risk of accidents caused by operational errors. The snap-fit ​​engagement between the circumferential pressure plate pin and the L-shaped guide pin groove, combined with the continuous clamping force of the axial elastic pushing structure, forms a double limit, ensuring reliable locking even under high-speed rotation and strong vibration conditions. This solves the problem of loosening in traditional quick-release mechanisms. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A perspective sectional view of the quick-release mechanism for the press-rotary motor propeller provided in an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the structure of the snap-on top plate assembly provided in the embodiments of this application;

[0017] Figure 3 This is a schematic diagram of the elastic jacking structure provided in the embodiments of this application;

[0018] Figure 4 This is a schematic diagram of the structure of the snap-fit ​​base assembly provided in the embodiments of this application;

[0019] Figure 5 This is a schematic diagram of the structure of the second guide slope provided in an embodiment of this application;

[0020] Figure 6 This is a schematic diagram of the initial installation state of the snap-fit ​​base assembly provided in the embodiments of this application;

[0021] Figure 7 and Figure 8 This is a schematic diagram illustrating the installation process of the snap-fit ​​base assembly provided in an embodiment of this application.

[0022] Figure 9 This is a schematic diagram of the L-shaped guide pin groove in Example 1;

[0023] Figure 10 This is a schematic diagram of the L-shaped guide pin groove in Example 2.

[0024] Icons: 1-Snap-on base assembly; 11-Plunger rod; 12-Pressure plate pin; 13-Second multi-tooth thrust groove; 14-Second multi-tooth thrust protrusion; 141-First guide slope; 15-Base body; 16-Elastic reset component; 17-Shoulder surface; 2-Snap-on top plate assembly; 21-L-shaped guide pin groove; 211-Installation guide groove; 212-Locking limit groove; 22-First multi-tooth thrust protrusion; 221-Second guide slope; 23-Top plate body; 24-Pressure cap; 25-First fastener; 3-Elastic push structure; 31-Plunger sleeve; 32-Plunger spring; 33-Plunger pin; 34-Oval hole; 4-Second fastener; 5-Rib groove. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for 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. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0027] Example 1

[0028] This application provides a quick-release mechanism for a press-and-rotate motor propeller, such as... Figures 1 to 9As shown, the quick-release mechanism for the push-to-rotate motor propeller includes a snap-fit ​​base assembly 1 and a snap-fit ​​top plate assembly 2. The snap-fit ​​base assembly 1 is used to fixally connect to the motor rotor. The snap-fit ​​top plate assembly 2 is used to fixally connect to the propeller. The snap-fit ​​base assembly 1 has at least one pair of radially movable plunger rods 11 symmetrically arranged circumferentially, and each plunger rod 11 is fixedly provided with a vertically extending pressure plate pin 12. An elastic reset member 16 is provided between the plunger rod 11 and the snap-fit ​​base assembly 1, so that the plunger rod 11 has a tendency to move radially outward. The snap-fit ​​top plate assembly 2 has L-shaped guide pin grooves 21 on both sides corresponding to the pressure plate pins 12. The L-shaped guide pin grooves 21 include an installation guide groove 211 and a locking limit groove 212 communicating with it. An axial elastic push structure 3 is provided between the snap-fit ​​top plate assembly 2 and the snap-fit ​​base assembly 1. During installation, place the snap-on top plate assembly 2 on the snap-on base assembly 1, press the plunger rod 11 to cause the pressure plate pin 12 to retract radially inward, and align the pressure plate pin 12 with the installation guide groove 211 by relative rotation. Then press down and continue to rotate the snap-on top plate assembly 2, so that the pressure plate pin 12 slides from the installation guide groove 211 into the locking limit groove 212 along the L-shaped guide pin groove 21. Under the combined action of the axial clamping force of the elastic push structure 3 and the elastic reset member 16 driving the pressure plate pin 12 to lock in the locking limit groove 212, the snap-on top plate assembly 2 and the snap-on base assembly 1 are quickly and reliably locked and torque is transmitted.

[0029] Specifically, the snap-on top plate assembly 2 includes a top plate body 23 and a pressure cover 24 for pressing the propeller. The pressure cover 24 is fixed to the top plate body 23 by a first fastener 25, so that the snap-on top plate assembly 2 is integrated with the propeller.

[0030] It should be noted that the press-and-rotate motor propeller quick-release mechanism of this application requires no special tools. The propeller can be quickly disassembled and assembled by "pressing and rotating," which improves the deployment and maintenance efficiency of the power system and reduces the risk of accidents caused by operational errors. The snap-fit ​​engagement between the circumferential pressure plate pin 12 and the L-shaped guide pin groove 21, combined with the continuous clamping force of the axial elastic pushing structure 3, forms a double limit, allowing the mechanism to lock reliably even under high-speed rotation and strong vibration conditions, thus solving the problem of easy loosening in traditional quick-release mechanisms.

[0031] In this embodiment, a first multi-tooth thrust protrusion 22 is provided at the bottom center of the snap-on top plate assembly 2. A second multi-tooth thrust groove 13 matching the first multi-tooth thrust protrusion 22 is provided at the top center of the snap-on base assembly 1, and a second multi-tooth thrust protrusion 14 is formed between the second multi-tooth thrust grooves 13. The elastic push structure 3 includes a plunger sleeve 31 disposed in the first multi-tooth thrust protrusion 22, and a plunger spring 32 disposed on the top of the plunger sleeve 31 and acting on the plunger sleeve 31 to give it a downward extension tendency. When the snap-on top plate assembly 2 is rotated and locked, the bottom end of the plunger sleeve 31 is pressed against the corresponding shoulder surface 17 on the snap-on base assembly 1, while the top of the first multi-tooth thrust protrusion 22 abuts against the bottom of the second multi-tooth thrust protrusion 14.

[0032] Specifically, the shoulder surface 17 is formed at the step inside the second multi-tooth thrust protrusion 14.

[0033] It should be noted that this application strengthens the axial positioning accuracy and tightness of the snap-on top plate assembly 2 and the snap-on base assembly 1 by the mutual contact between the first multi-tooth thrust protrusion 22 and the second multi-tooth thrust protrusion 14, combined with the elastic push structure 3 composed of the plunger sleeve 31 and the plunger spring 32.

[0034] In this embodiment, both the first multi-tooth thrust protrusion 22 and the second multi-tooth thrust protrusion 14 have a quincunx-shaped structure. The second multi-tooth thrust groove 13 is also a quincunx-shaped groove. A first guide slope 141 is provided at the bottom of the second multi-tooth thrust protrusion 14, and a corresponding second guide slope 221 is provided at the top of the first multi-tooth thrust protrusion 22. This beveled design automatically guides the multi-tooth teeth to precisely mesh during rotational locking, effectively reducing assembly difficulty.

[0035] In this embodiment, the sidewall of the plunger sleeve 31 is connected to the snap-on top plate assembly 2 via the plunger pin 33. The snap-on top plate assembly 2 is provided with an oblong hole 34 that allows the plunger pin 33 to move up and down, so as to restrict the plunger sleeve 31 to move only along its axial direction, effectively preventing it from deflecting or getting stuck during operation.

[0036] In this embodiment, the snap-fit ​​base assembly 1 includes a base body 15. The base body 15 is provided with a plunger groove for accommodating the plunger rod 11 and a spring cavity for accommodating the elastic reset member 16, providing a precise accommodating space and movement track for the plunger rod 11 and its elastic reset member 16, ensuring the smooth and stable radial elastic movement of the plunger rod 11.

[0037] In this embodiment, the two ends of the elastic reset member 16 are respectively connected to the inner wall of the spring cavity and the plunger rod 11.

[0038] In this embodiment, the two side structures of the base body 15 are integrally connected by a rib groove 5 that is higher than the bolt mounting surface. This not only improves the overall structural rigidity and deformation resistance of the base body 15, but also avoids interference between the rib groove 5 and the bolt mounting surface, ensuring ease of assembly.

[0039] In this embodiment, the top plate body 23, the plunger rod 11, and the base body 15 are preferably made of high-strength aluminum alloy through precision machining. This material selection scheme achieves overall lightweighting while meeting the high strength and high rigidity requirements of the mechanism, thus meeting the needs of aircraft power components for both weight and reliability.

[0040] In this embodiment, the base body 15 has a plurality of mounting holes evenly distributed circumferentially for fixing to the motor rotor. Specifically, the second fastener 4 passes through the mounting holes to connect the base body 15 to the motor rotor.

[0041] In this embodiment, the installation guide groove 211 is a through hole structure that penetrates the side wall of the snap-on top plate assembly 2, so that the pressure plate pin 12 can be directly observed in the initial stage of installation, which facilitates quick visual alignment, simplifies the initial positioning operation, and improves the convenience and intuitiveness of assembly.

[0042] The installation and locking process in this embodiment of the application is as follows:

[0043] Combination Figures 6-8 As shown, the installation steps for the quick-release mechanism of the press-rotary motor propeller are as follows:

[0044] Initial alignment: Place the snap-on top plate assembly 2, which has been fixedly connected to the propeller, on top of the snap-on base assembly 1, which is connected to the motor rotor. By rotating relative to each other, align the mounting guide grooves 211 on both sides of the snap-on top plate assembly 2 with the pressure plate pins 12 on both sides of the snap-on base assembly 1.

[0045] Press and guide: Press the plunger rods 11 on both sides inward with your fingers simultaneously to overcome the elastic force of the elastic reset member 16, causing the pressure plate pin 12 to retract radially inward. Then press the snap-on top plate assembly 2 axially downward, so that the pressure plate pin 12 enters the installation guide groove 211.

[0046] Rotary locking: Maintain downward pressure and rotate the snap-on top plate assembly 2 counterclockwise by approximately 30°. At this time, the pressure plate pin 12 slides from the installation guide groove 211 into the locking limit groove 212 along the L-shaped guide pin groove 21. Under the radial elastic force of the elastic reset member 16, the pressure plate pin 12 is locked at the end of the locking limit groove 212, achieving circumferential locking, often accompanied by a "click" sound.

[0047] Axial pressing: During the rotational pressing process, the bottom end of the plunger sleeve 31 contacts the shoulder surface 17 of the snap-fit ​​base assembly 1 and compresses the plunger spring 32. After locking, under the restoring force of the plunger spring 32, the bottom surface of the plunger sleeve 31 and the shoulder surface 17 continue to press together. At the same time, the first multi-tooth thrust protrusion 22 and the second multi-tooth thrust protrusion 14 are tightly engaged through the first guide slope 141 and the second guide slope 221 to form an axial pressing and torque transmission surface.

[0048] Disassembly is the reverse process of installation, and the steps are as follows:

[0049] Press to unlock: Press the plunger rods 11 on both sides inward to the bottom at the same time, so that the pressure plate pin 12 is disengaged from the locking limit groove 212.

[0050] Reverse rotation: Rotate the snap-on top plate assembly 2 approximately 30° in the opposite direction to the installation (e.g., clockwise) until the pressure plate pin 12 retracts into the installation guide groove 211.

[0051] Separation and removal: Loosen the plunger lever 11 and lift the snap-on top plate assembly 2 vertically upwards to achieve quick separation of the propeller assembly.

[0052] Example 2

[0053] like Figure 10 As shown, the difference between this embodiment and Embodiment 1 lies in the provision of a different structural configuration for the snap-on top plate assembly 2. The overall layout of all L-shaped guide pin grooves 21 on this snap-on top plate assembly 2 is a left-right mirror image of that in Embodiment 1, and the extension direction of its locking limiting groove 212 is opposite. Therefore, during installation, clockwise rotation (instead of counterclockwise rotation as in Embodiment 1) is required to lock it in place. By equipping these two specifications of snap-on top plate assemblies 2, they can be specifically used for forward-rotating propellers and counter-rotating propellers, respectively. Because the locking directions are opposite, incorrect assembly of forward and counter-rotating propellers is fundamentally prevented.

[0054] Example 3

[0055] This application also provides an aircraft that includes a press-to-rotate motor propeller quick-release mechanism as described in Embodiment 1 or Embodiment 2.

[0056] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0057] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A push-rotary motor propeller quick release mechanism, characterized in that, include: The snap-fit ​​base assembly (1) is used to fix the motor rotor in place; The snap-on top plate assembly (2) is used to fix and connect the propeller; The buckle base assembly (1) is symmetrically provided with at least one pair of radially movable plunger rods (11) along the circumferential direction, and each plunger rod (11) is fixedly provided with a vertically extending pressure plate pin (12). An elastic reset member (16) is provided between the plunger rod (11) and the snap-fit ​​base assembly (1), so that the plunger rod (11) has a tendency to move radially outward; The buckle top plate assembly (2) has L-shaped guide pin grooves (21) on both sides corresponding to the pressure plate pin (12). The L-shaped guide pin groove (21) includes an installation guide groove (211) and a locking limit groove (212) connected thereto. An axial elastic pushing structure (3) is provided between the snap-on top plate assembly (2) and the snap-on base assembly (1). During installation, the snap-on top plate assembly (2) is placed on the snap-on base assembly (1), and the plunger rod (11) is pressed to make the pressure plate pin (12) radially retract. The pressure plate pin (12) is aligned with the installation guide groove (211) by relative rotation. Then, the snap-on top plate assembly (2) is pressed down and rotated further, so that the pressure plate pin (12) slides from the installation guide groove (211) into the locking limit groove (212) along the L-shaped guide pin groove (21). Under the combined action of the axial pressing force of the elastic push structure (3) and the elastic reset member (16) driving the pressure plate pin (12) to be locked in the locking limit groove (212), the snap-on top plate assembly (2) and the snap-on base assembly (1) are locked.

2. The press and rotate motor propeller quick release mechanism of claim 1, wherein, The bottom center of the snap-on top plate assembly (2) is provided with a first multi-tooth thrust protrusion (22); the top center of the snap-on base assembly (1) is provided with a second multi-tooth thrust groove (13) that matches the first multi-tooth thrust protrusion (22), and a second multi-tooth thrust protrusion (14) is formed between the second multi-tooth thrust grooves (13). The elastic push structure (3) includes a plunger sleeve (31) disposed in the first multi-tooth thrust protrusion (22) and a plunger spring (32) disposed on the top of the plunger sleeve (31) and acting on the plunger sleeve (31) to give it a downward extension tendency. When the snap-on top plate assembly (2) is rotated and locked, the bottom end of the plunger sleeve (31) is pressed against the corresponding shoulder surface (17) on the snap-on base assembly (1), and at the same time, the top of the first multi-tooth thrust protrusion (22) abuts against the bottom of the second multi-tooth thrust protrusion (14).

3. The press and swivel motor propeller quick release mechanism of claim 2, wherein, The first multi-tooth thrust protrusion (22) and the second multi-tooth thrust protrusion (14) are both plum blossom-shaped structures; the second multi-tooth thrust groove (13) is a plum blossom-shaped groove; the bottom of the second multi-tooth thrust protrusion (14) is provided with a first guide slope (141), and the top of the first multi-tooth thrust protrusion (22) is provided with a corresponding second guide slope (221).

4. The press and rotate motor propeller quick release mechanism of claim 3, wherein, The sidewall of the plunger sleeve (31) is connected to the snap-on top plate assembly (2) via a plunger pin (33). The snap-on top plate assembly (2) is provided with an oblong hole (34) that allows the plunger pin (33) to move up and down, so as to restrict the plunger sleeve (31) from moving along its axial direction.

5. The press and swivel motor propeller quick release mechanism of claim 1, wherein, The buckle base assembly (1) includes a base body (15), which has a plunger groove for accommodating the plunger rod (11) and a spring cavity for accommodating the elastic reset member (16).

6. The press and rotate motor propeller quick release mechanism of claim 1, wherein, The installation guide groove (211) is a through hole structure that penetrates the side wall of the snap-on top plate assembly (2).

7. An aircraft, characterized in that Includes a press-and-rotate motor propeller quick-release mechanism as described in any one of claims 1 to 6.

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