Easily-disassembled paddle fixing structure for unmanned aerial vehicle

Abstract

The utility model relates to an unmanned aerial vehicle paddle fixing structure easy to disassemble, which comprises an upper paddle clamp, a lower paddle clamp and a motor, a paddle is fixedly arranged between the upper paddle clamp and the lower paddle clamp through a fixing screw, a motor shaft of the motor is provided with a fixing thread, the lower paddle clamp and the upper paddle clamp are coaxially provided with a center hole, and the center hole is provided with a through hole. The lower paddle clamp is arranged on a motor shaft of the motor in a sleeved mode through a center hole, and the upper end of the lower paddle clamp is locked and fixed with a fixing thread on the motor shaft through a locknut. According to the utility model, the screw threads are additionally arranged on the motor shaft, and the paddles are fixed by the nuts, so that the screws cannot be damaged during assembly and disassembly, and the paddles are driven by the positioning table on the motor, so that the screws cannot be damaged; and meanwhile, the weight of the paddle fixing structure can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of unmanned aerial vehicle blade installation, and in particular relates to an easily detachable unmanned aerial vehicle blade fixing structure. Background Art

[0002] In recent years, drone technology has developed by leaps and bounds. Due to its advantages such as low cost, good maneuverability, strong survivability, and no risk of casualties, drones have occupied an extremely important position in modern military warfare and also have very broad prospects in the civilian field. The current drones mainly include fixed-wing drones and rotary-wing drones.

[0003] At present, rotorcraft UAVs mostly use small fixing screws to fix the blades. When the blades are disassembled, the fixing screws are small and easily slip off or break, making it inconvenient to disassemble the blades. However, directly increasing the size of the fixing screws will make the blade fixing structure too heavy, affecting the flight performance of the UAV. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an easily detachable blade fixing structure for a drone. The utility model adopts a method of adding threads to the motor shaft and fixing the blades with nuts, so that the fixing screws will not be damaged during assembly and disassembly, and the blades are driven through the positioning grooves on the motor without causing damage to the fixing screws. The weight of the blade fixing structure can also be reduced.

[0005] The utility model solves the technical problem through the following technical solutions:

[0006] A structure for fixing an easily detachable propeller blade for an unmanned aerial vehicle is characterized in that it comprises an upper propeller clamp, a lower propeller clamp and a motor, the propeller blade is fixedly installed between the upper propeller clamp and the lower propeller clamp by means of fixing screws, a fixing thread is arranged on the motor shaft of the motor, a center hole is coaxially arranged on the lower propeller clamp and the upper propeller clamp, the lower propeller clamp is sleeved on the motor shaft of the motor through the center hole, and the upper end of the lower propeller clamp is locked and fixed with the fixing thread on the motor shaft by means of a locking nut.

[0007] Moreover, a positioning platform is provided at the bottom of the motor shaft, and the positioning platform cooperates with the central hole of the lower propeller clamp.

[0008] Moreover, an R angle is arranged on the positioning platform, and a chamfer is arranged on the center hole of the lower propeller clamp.

[0009] Moreover, a plurality of positioning holes are arranged at intervals on the lower end surface of the lower propeller clamp, and bosses are arranged on the upper end surface of the motor corresponding to the positioning holes, and the bosses are transitionally matched with the positioning holes.

[0010] Moreover, a plurality of groove gaskets are arranged on the upper end surface of the motor, and a clamping table is arranged on the lower end surface of the lower propeller clamp corresponding to the groove gaskets, and the clamping table is transitionally matched with the groove gaskets.

[0011] Moreover, a gasket is arranged between the upper end surface of the lower propeller clamp and the anti-loosening nut.

[0012] Moreover, fixing screw holes are arranged at both ends of the upper paddle clamp, fixing screw mounting posts are arranged at both ends of the lower paddle clamp, and the paddle blades are sleeved on the fixing screw mounting posts and fixed by fixing screws passing through the fixing screw holes.

[0013] The advantages and beneficial effects of the utility model are:

[0014] 1. A positioning platform is provided at the bottom of the motor shaft of the utility model, and the positioning platform cooperates with the central hole of the lower propeller clamp to prevent the large nut from pressing on the motor bearing when being fixed.

[0015] 2. A plurality of positioning holes are arranged at intervals on the lower end surface of the lower propeller clamp of the utility model, and bosses are arranged on the upper end surface of the motor corresponding to the positioning holes, and the bosses are transitionally matched with the positioning holes; the propeller torque is provided by the positioning platform on the motor, and the screws are not subjected to shear force and are not easily damaged; a locking nut is used to fix the propeller blades, which is convenient for disassembly and assembly and is not easy to cause damage to the propeller blades.

[0016] 2. The utility model adopts the method of adding threads on the motor shaft and fixing the blades with nuts, so that the screws will not be damaged during assembly and disassembly, and the blades are driven by the positioning platform on the motor without causing damage to the screws; at the same time, the weight of the blade fixing structure can be reduced.

[0017] 3. An R angle is set on the positioning platform of the utility model, and a chamfer is set on the center hole of the lower propeller clamp to prevent stress concentration fracture.

[0018] 4. The upper end surface of the motor of the utility model is provided with a plurality of groove gaskets, and the lower end surface of the lower propeller clamp is provided with a clamping table corresponding to the groove gaskets. The clamping table and the groove gaskets are transitionally matched to increase the positioning and installation accuracy of the lower propeller clamp and the motor.

[0019] 5. A gasket is arranged between the upper end surface of the lower oar clamp of the utility model and the anti-loosening nut to ensure the installation firmness of the lower oar clamp and the convenience of disassembly and assembly of the anti-loosening nut.

[0020] 6. The propeller blade or propeller clamp of the utility model cooperates with the motor using a boss and a positioning hole or a clamping table and a groove gasket. The propeller blade rotation torque is provided by the positioning table, and there is no need to use screws to provide torque, and the screws are not subject to shear force. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the explosion structure of the utility model (positive propeller motor);

[0023] Figure 3 It is a schematic diagram of the explosion structure of the utility model (reverse propeller motor);

[0024] Figure 4 This is another exploded structural schematic diagram of the utility model (reverse propeller motor).

[0025] Description of Reference Numerals

[0026] 1-propeller blade, 2-upper propeller clamp, 3-fixing screw, 4-lower propeller clamp, 5-motor shaft, 6-positive propeller motor, 7-boss, 8-center hole, 9-reverse propeller motor, 10-clamping table, 11-locking nut, 12-washer, 13-positioning table, 14-groove gasket. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not restrictive, and the protection scope of the present invention cannot be limited by them.

[0028] like Figure 1 As shown, an easily detachable propeller blade fixing structure for a drone, the innovation of which lies in: comprising an upper propeller clamp 2, a lower propeller clamp 4 and a motor, the propeller blade 1 being fixedly installed between the upper propeller clamp and the lower propeller clamp by a fixing screw 3, a fixing thread being arranged on a motor shaft 5 of the motor, a center hole 8 being coaxially arranged on the lower propeller clamp and the upper propeller clamp, the lower propeller clamp being sleeved on the motor shaft of the motor through the center hole, and the upper end of the lower propeller clamp being locked and fixed with the fixing thread on the motor shaft by a locking nut 11.

[0029] A positioning platform 13 is provided at the bottom of the motor shaft, and the positioning platform cooperates with the center hole of the lower propeller clamp to prevent the large nut from pressing on the motor bearing when being fixed; the blade torque is provided by the positioning platform on the motor, and the screw is not subjected to shear force and is not easily damaged.

[0030] An R angle is set on the positioning table, and a chamfer is set on the center hole of the lower propeller clamp to prevent stress concentration fracture.

[0031] A gasket 12 is arranged between the upper end surface of the lower oar clamp and the anti-loosening nut to ensure the installation firmness of the lower oar clamp and the convenience of disassembly and assembly of the anti-loosening nut.

[0032] Both ends of the upper paddle clamp are provided with fixing screw holes, and both ends of the lower paddle clamp are provided with fixing screw mounting columns. The paddle blade is sleeved on the fixing screw mounting columns and fixed by passing the fixing screws through the upper fixing screw holes. The paddle blade is firmly installed and fixed with a locking nut. The disassembly and assembly is convenient and the paddle blade is not easily damaged.

[0033] The utility model adopts the method of adding threads on the motor shaft and fixing the blades with nuts, so that the screws will not be damaged during assembly and disassembly, and the blades are driven by the positioning platform on the motor without causing damage to the screws; at the same time, the weight of the blade fixing structure can be reduced.

[0034] like Figure 2 As shown, in the positive propeller motor 6, a plurality of positioning holes are arranged at intervals on the lower end surface of the lower propeller clamp, and a boss 7 is arranged on the upper end surface of the motor corresponding to the positioning holes, and the boss is transitionally matched with the positioning holes.

[0035] like Figure 3 , 4 As shown, a plurality of groove gaskets 14 are arranged on the upper end surface of the reverse propeller motor 9, and a clamping table 10 is arranged on the lower end surface of the lower propeller clamp corresponding to the groove gaskets, and the clamping table is transitionally matched with the groove gaskets.

[0036] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. An easily detachable blade fixing structure for a drone, characterized in that: It includes an upper paddle clamp, a lower paddle clamp and a motor, the upper paddle clamp and the lower paddle clamp are used to fix the paddle blades by fixing screws, a fixing thread is arranged on the motor shaft of the motor, a center hole is coaxially arranged on the lower paddle clamp and the upper paddle clamp, the lower paddle clamp is sleeved on the motor shaft of the motor through the center hole, and the upper end of the lower paddle clamp is locked and fixed with the fixing thread on the motor shaft by a locking nut.

2. The easily detachable blade fixing structure for a drone according to claim 1, characterized in that: A positioning platform is provided at the bottom of the motor shaft, and the positioning platform cooperates with the central hole of the lower propeller clamp.

3. The easily detachable blade fixing structure for a drone according to claim 2, characterized in that: The positioning platform is provided with an R angle, and the center hole of the lower propeller clamp is provided with a chamfer.

4. The easily detachable blade fixing structure for a drone according to claim 1, characterized in that: A plurality of positioning holes are arranged at intervals on the lower end surface of the lower propeller clamp, and bosses are arranged on the upper end surface of the motor corresponding to the positioning holes, and the bosses are transitionally matched with the positioning holes.

5. The easily detachable blade fixing structure for a drone according to claim 1, characterized in that: A plurality of groove gaskets are arranged on the upper end surface of the motor, and a clamping table is arranged on the lower end surface of the lower propeller clamp corresponding to the groove gaskets, and the clamping table is transitionally matched with the groove gaskets.

6. The easily detachable blade fixing structure for a drone according to claim 1, characterized in that: A gasket is arranged between the upper end surface of the lower propeller clamp and the anti-loosening nut.

7. The easily detachable blade fixing structure for a drone according to claim 1, characterized in that: The two ends of the upper paddle clamp are provided with fixing screw holes, the two ends of the lower paddle clamp are provided with fixing screw mounting posts, the paddle blades are sleeved on the fixing screw mounting posts and are fixed by fixing screws passing through the upper fixing screw holes.

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