Quick-release propeller locking device for propeller and aircraft

Abstract

The utility model discloses a quick-release propeller locking device for a propeller and an aircraft, and relates to the field of unmanned aerial vehicles. The base assembly is fixedly connected with a motor rotor of the aircraft; the lock catch assembly is used for fixing a propeller and is detachably connected to the base assembly; the base assembly comprises a buckle base, a plunger push rod capable of moving relative to the buckle base, a locking pin transversely arranged on the plunger push rod in a penetrating mode and an elastic piece providing elastic force for the plunger push rod. The two sides of the buckle base are provided with plunger installation grooves for the plunger push rods to move and kidney-shaped pin grooves for the locking pins to move in a limited mode. A buckle groove matched with the locking pin is formed in the lock catch assembly, and a guide inclined face is arranged in the buckle groove. Therefore, the device can complete quick disassembly and assembly of the propeller without special tools such as a torque wrench, the disassembly and assembly time is effectively shortened, the operation efficiency is improved, meanwhile, convenient disassembly of the propeller can be achieved, the size of a packaging box during transportation of the unmanned aerial vehicle is reduced, the transportation cost is reduced, and the portability is improved.

Description

Technical Field

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

[0002] Currently, compound-wing UAVs and multi-rotor UAVs are widely used in surveying, inspection, logistics and other fields, and their power systems usually adopt a multi-axis, multi-propeller layout.

[0003] Traditional propeller installation methods typically involve bolt fastening, requiring tools such as torque wrenches for assembly and disassembly. This process is cumbersome, time-consuming, and severely impacts operational efficiency. Furthermore, for medium to large-sized drones, the propellers are quite large, often resulting in bulky packaging boxes during transportation due to their non-removable or inconvenient disassembly, leading to high transportation costs and poor portability. Utility Model Content

[0004] This application provides a propeller quick-release locking device and an aircraft, which solves the problems mentioned in the background art.

[0005] In a first aspect, embodiments of this application provide a propeller quick-release locking device, comprising: a base assembly for fixed connection with the motor rotor of an aircraft; and a locking assembly for fixing the propeller and detachably connected to the base assembly; the base assembly includes a snap-fit ​​base, a plunger push rod movable relative to the snap-fit ​​base, a locking pin transversely passing through the plunger push rod, and an elastic element providing elastic force to the plunger push rod; the snap-fit ​​base is provided with a plunger mounting groove for the plunger push rod to move and a locking pin for limiting the position of the locking pin. A movable waist-shaped pin groove; the two ends of the elastic element are connected to the inner wall of the plunger mounting groove and the plunger push rod; the locking assembly is provided with a snap-fit ​​groove that cooperates with the locking pin, and a guide slope is provided in the snap-fit ​​groove; wherein, pressing the plunger push rod can retract the locking pin so that the locking assembly can be installed on the base assembly; after releasing the plunger push rod, under the action of the elastic element, the locking pin moves along the guide slope and snaps into the snap-fit ​​groove, thereby achieving locking between the locking assembly and the base assembly.

[0006] In one possible implementation, the elastic element is a tension / compression spring.

[0007] In one possible implementation, the locking assembly includes a quick-release buckle and a pressure plate for clamping the propeller, the pressure plate being fixed to the quick-release buckle by a first fastener, and buckle slots being provided on both sides of the quick-release buckle.

[0008] In one possible implementation, the base assembly and the locking assembly are provided with an axial contact surface and a circumferential limiting surface that fit together.

[0009] In one possible implementation, the snap-fit ​​base has a plurality of mounting holes evenly distributed circumferentially for fixing to the motor rotor.

[0010] Secondly, embodiments of this application provide an aircraft including the propeller quick-release locking device described in the first aspect or any possible implementation of the first aspect.

[0011] One or more technical solutions provided in the embodiments of this application have at least the following technical effects:

[0012] The propeller quick-release locking device provided in this application includes a base assembly and a locking assembly. During installation, pressing the plunger push rod retracts the locking pin along the slotted groove, thereby releasing the locking assembly from its restraint and facilitating its installation onto the base assembly. After releasing the plunger push rod, the elastic element causes the plunger push rod to reset, and the locking pin moves along the guide ramp in the latching groove and finally engages, achieving reliable locking between the locking assembly and the base assembly. Therefore, this propeller quick-release locking device eliminates the need for specialized tools such as torque wrenches, enabling rapid propeller installation and removal. This not only shortens installation and removal time and improves operational efficiency but also makes propeller removal more convenient, helping to reduce the packaging volume during drone transportation, lowering transportation costs, and enhancing overall portability. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is a schematic diagram of the propeller quick-release locking device provided in an embodiment of this application;

[0015] Figure 2 This is a schematic diagram of the chamfered rib provided in an embodiment of this application;

[0016] Figure 3 This is a schematic diagram of the waist-shaped pin groove provided in an embodiment of this application;

[0017] Figure 4 This is a schematic diagram of the structure of the locking assembly provided in an embodiment of this application;

[0018] Figure 5 This is a schematic diagram of the base assembly provided in an embodiment of this application.

[0019] Icons: 1-Base assembly; 11-Snap-on base; 12-Plunger push rod; 13-Locking pin; 14-Elastic element; 15-Plunger mounting groove; 16-Waist-shaped pin groove; 2-Snap-on assembly; 21-Snap-on groove; 22-Guide bevel; 23-Quick-release snap; 24-Pressure plate; 25-First fastener; 26-Chamfered rib; 3-Second fastener. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] This application provides a propeller quick-release locking device, such as... Figures 1 to 5As shown. The propeller quick-release locking device includes a base assembly 1 and a locking assembly 2. The base assembly 1 is used for fixed connection with the motor rotor of the aircraft. The locking assembly 2 is used for fixing the propeller and is detachably connected to the base assembly 1. The base assembly 1 includes a snap-fit ​​base 11, a plunger push rod 12 movable relative to the snap-fit ​​base 11, a locking pin 13 transversely passing through the plunger push rod 12, and an elastic element 14 providing elastic force to the plunger push rod 12. The snap-fit ​​base 11 is provided with a plunger mounting groove 15 for the plunger push rod 12 to move and a waist-shaped pin groove 16 for the locking pin 13 to limit its movement. The two ends of the elastic element 14 are connected to the inner wall of the plunger mounting groove 15 and the plunger push rod 12. The locking assembly 2 is provided with a snap-fit ​​groove 21 that cooperates with the locking pin 13, and a guide slope 22 is provided in the snap-fit ​​groove 21. During operation, pressing the plunger push rod 12 causes the locking pin 13 to retract along the waist-shaped pin groove 16, thereby releasing the restriction on the locking assembly 2 and facilitating its installation onto the base assembly 1. After releasing the plunger push rod 12, under the action of the elastic element 14, the plunger push rod 12 resets, and the locking pin 13 moves along the guide slope 22 in the latching groove 21 and finally engages with the latching groove 21, achieving reliable locking between the locking assembly 2 and the base assembly 1. Therefore, this propeller quick-release locking device can complete the rapid installation and removal of the propeller without the need for special tools such as torque wrenches. This not only shortens the installation and removal time and improves work efficiency, but also makes propeller removal more convenient, helping to reduce the packaging volume during drone transportation, reduce transportation costs, and improve overall portability.

[0023] In one embodiment of this application, the locking assembly 2 is provided with symmetrical latching grooves 21 on both sides. The root of the latching groove 21 is machined with an arc chamfer for stress dispersion, which can effectively disperse the stress generated after the locking pin 13 is engaged, avoid stress concentration causing cracking and damage at the root of the latching groove 21, and thus ensure a good stress state when the locking assembly 2 and the base assembly 1 are locked together.

[0024] like Figure 2 As shown, to further optimize the structure, a chamfered rib 26 can be provided at the upper end of the snap-fit ​​groove 21. While enhancing the structural strength of the upper end of the snap-fit ​​groove 21, the chamfered rib 26 also constitutes a weight-reduction design.

[0025] In this embodiment, the elastic element 14 is a tension / compression spring, and the tension / compression spring is disposed between the plunger mounting groove 15 and the plunger push rod 12. It can stably provide elastic thrust to the plunger push rod 12, thereby reliably pushing the locking pin 13 outward, ensuring that the locking pin 13 can accurately engage with the buckle groove 21, and effectively locking the buckle assembly 2 and the base assembly 1.

[0026] In this embodiment of the application, the locking assembly 2 includes a quick-release buckle 23 and a pressure plate 24 for pressing the propeller. The pressure plate 24 is fixed to the quick-release buckle 23 by a first fastener 25, and buckle grooves 21 are provided on both sides of the quick-release buckle 23.

[0027] It should be noted that the pressure plate 24 of this application can firmly press the propeller to prevent axial movement of the propeller during high-speed rotation and ensure the stability of propeller operation; the buckle slots 21 on both sides of the quick-release buckle 23 can precisely cooperate with the locking pin 13 of the base assembly 1 to realize the quick disassembly and assembly of the locking assembly 2 and the base assembly 1, and improve the efficiency of propeller loading and unloading.

[0028] In this embodiment, the base assembly 1 and the locking assembly 2 are provided with an axial contact surface and a circumferential limiting surface that fit together. The axial contact surface is used to limit the axial displacement of the locking assembly 2 (and the propeller fixed thereto) relative to the base assembly 1 to prevent it from axially loosening; the circumferential limiting surface is used to limit the relative rotation between the two to transmit torque.

[0029] In this embodiment, the snap-fit ​​base 11 has multiple mounting holes evenly distributed circumferentially for fixing to the motor rotor. Specifically, the second fastener 3 passes through these mounting holes to securely connect the snap-fit ​​base 11 to the motor rotor. This circumferentially distributed mounting hole design ensures that the connection force between the base assembly 1 and the motor rotor is evenly distributed at each connection point, improving the overall stability of the base assembly 1 installation and effectively preventing deformation or loosening of the base assembly 1 caused by excessive local stress.

[0030] In this embodiment, plunger mounting grooves 15 are respectively formed on a pair of opposite sidewalls of the snap-fit ​​base 11; waist-shaped pin grooves 16 are respectively formed on another pair of sidewalls adjacent to the sidewalls where the plunger mounting grooves 15 are formed. This layout allows the locking pin 13 to extend and retract smoothly along the preset trajectory of the waist-shaped pin grooves 16, while optimizing the internal space utilization of the snap-fit ​​base 11, making the device structure more compact.

[0031] This application provides an aircraft including the aforementioned propeller quick-release propeller locking device.

[0032] 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.

[0033] 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 propeller quick release lock propeller device, characterized by, include: Base assembly (1) is used for fixed connection with the motor rotor of the aircraft; The locking assembly (2) is used to secure the propeller and is detachably connected to the base assembly (1). The base assembly (1) includes a snap-fit ​​base (11), a plunger push rod (12) movable relative to the snap-fit ​​base (11), a locking pin (13) transversely passing through the plunger push rod (12), and an elastic element (14) providing elastic force to the plunger push rod (12); the snap-fit ​​base (11) is provided with a plunger mounting groove (15) for the plunger push rod (12) to move and a waist-shaped pin groove (16) for the locking pin (13) to limit its movement; the two ends of the elastic element (14) are connected to the inner wall of the plunger mounting groove (15) and the plunger push rod (12). The latch assembly (2) is provided with a latch groove (21) that cooperates with the locking pin (13), and a guide slope (22) is provided in the latch groove (21). Pressing the plunger push rod (12) can retract the locking pin (13) so that the locking assembly (2) can be installed on the base assembly (1); after releasing the plunger push rod (12), under the action of the elastic member (14), the locking pin (13) moves along the guide slope (22) and engages in the snap-fit ​​groove (21), thereby locking the locking assembly (2) and the base assembly (1).

2. The quick-release propeller locking device of claim 1, wherein, The elastic element (14) is a tension / compression spring.

3. The quick-release propeller locking device of claim 1, wherein, The locking assembly (2) includes a quick-release buckle (23) and a pressure plate (24) for pressing the propeller. The pressure plate (24) is fixed to the quick-release buckle (23) by a first fastener (25). The buckle groove (21) is provided on both sides of the quick-release buckle (23).

4. The quick-release propeller locking device of claim 1, wherein, The base assembly (1) and the locking assembly (2) are provided with an axial contact surface and a circumferential limiting surface that fit together.

5. The quick-release propeller locking device of claim 1, wherein, The buckle base (11) has multiple mounting holes evenly distributed around its circumference for fixing to the motor rotor.

6. An aircraft, characterized in that Includes the propeller quick-release locking device as described in any one of claims 1-5.

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