Carbon fiber propeller folding device

Abstract

The utility model particularly relates to a carbon fiber propeller folding device which comprises an upper connecting base and a lower connecting base which are connected with each other, a limiting mechanism is arranged between the upper connecting base and the lower connecting base, and foldable propeller blade mechanisms are arranged between the upper connecting base and the lower connecting base and located on the two sides of the limiting mechanism. The foldable paddle mechanism comprises paddles rotationally arranged between an upper connecting base and a lower connecting base, plug screws are arranged among the upper connecting base, the lower connecting base and the paddles in a penetrating mode, nuts are connected to the plug screws, and buffer gaskets are arranged between the tops of the paddles and the bottom of the upper connecting base. A buffer gasket is also arranged between the bottom of the paddle and the top of the lower connecting seat, gasket grooves are formed in the bottom of the upper connecting seat and the top of the lower connecting seat, and the two buffer gaskets are located in the gasket grooves close to the buffer gaskets respectively. And the buffer gaskets play a role in pressing the paddles with the upper connecting seat and the lower connecting seat, so that vibration generated between the paddles and the upper connecting seat and the lower connecting seat can be reduced during flight.

Description

Technical Field

[0001] This utility model relates to the field of drone propellers, specifically to a carbon fiber propeller folding device. Background Art

[0002] Currently, drones are becoming increasingly common. Existing drones on the market have fixed rotor hubs and blades, and the blades cannot be folded, taking up considerable space when stored. Prior art document CN216684832U discloses a propeller folding mechanism, but this mechanism causes noise and other issues when the blades rotate, as they collide with the upper and lower connecting parts. Summary of the Invention

[0003] This invention provides a carbon fiber propeller folding device.

[0004] The technical solution of this utility model is implemented as follows: A carbon fiber propeller folding device includes an upper connecting seat and a lower connecting seat connected to each other. A limiting mechanism is provided between the upper connecting seat and the lower connecting seat. A foldable blade mechanism is provided between the upper connecting seat and the lower connecting seat and on both sides of the limiting mechanism. The foldable blade mechanism includes a blade rotatably disposed between the upper connecting seat and the lower connecting seat. A plug screw passes through the upper connecting seat, the lower connecting seat and the blade. A nut is connected to the plug screw. A buffer pad is provided between the top of the blade and the bottom of the upper connecting seat. A buffer pad is also provided between the bottom of the blade and the top of the lower connecting seat. A pad groove is opened at the bottom of the upper connecting seat and the top of the lower connecting seat. Two buffer pads are respectively located in the pad grooves adjacent to them.

[0005] The bottom of the lower connector is provided with a receiving groove 2, the plug screw extends downward into the receiving groove 2, and the nut is located in the receiving groove 2. The top of the upper connector is provided with a receiving groove 1, and the screw head of the plug screw is received in the receiving groove 1.

[0006] The cushioning pads are made of Teflon or PEEK material.

[0007] The outer part of the screw is fitted with a steel sleeve, and the outer part of the steel sleeve is fixedly connected to the blade.

[0008] The limiting mechanism includes a limiting post and a limiting groove. The limiting post is vertically fixed to the top of the lower connecting seat, and the limiting groove is opened at the bottom of the upper connecting seat.

[0009] The limiting post is fitted with a rubber sleeve.

[0010] The technical solution of this utility model has the following positive effects: the blade of this utility model can rotate around the locking screw as the axis, thereby realizing the folding of the blade and reducing its length for easy storage; the nut prevents the locking screw from falling off; the locking screw and nut are installed in a square manner, and the receiving groove one and receiving groove two can hide them; the buffer pad plays the role of pressing the blade with the upper and lower connecting seats, which can reduce the vibration generated between the blade and the upper and lower connecting seats during flight; the buffer pad is set in the pad groove, which can prevent the buffer pad from shifting. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the structure of this utility model.

[0013] Figure 3 This is a top view of the structure of this utility model.

[0014] Figure 4 for Figure 3 Sectional view at point BB. DETAILED DESCRIPTION

[0015] like Figure 1-4 As shown, a carbon fiber propeller folding device includes an upper connecting seat 1 and a lower connecting seat 2 connected to each other. A limit mechanism is provided between the upper connecting seat 1 and the lower connecting seat 2. A foldable blade mechanism is provided between the upper connecting seat 1 and the lower connecting seat 2 and on both sides of the limit mechanism. The foldable blade mechanism includes a blade 3 rotatably disposed between the upper connecting seat 1 and the lower connecting seat 2. A plug screw 4 passes through the upper connecting seat 1, the lower connecting seat 2 and the blade 3. A nut 5 is connected to the plug screw 4. A buffer pad 7 is provided between the top of the blade 3 and the bottom of the upper connecting seat 1, and a buffer pad 7 is also provided between the bottom of the blade 3 and the top of the lower connecting seat 2. The bottom of the upper connecting seat 1 and the bottom of the lower connecting seat 2 are connected to the blade 3. The top of the blade is provided with a gasket groove 13, and two buffer gaskets 7 are respectively located in the gasket groove 13 adjacent to it. Specifically, the blade 3 rotates around the locking screw 4 as the rotation axis. The nut 5 plays a role in preventing the locking screw 4 from falling off. The locking screw 4 and the nut 5 are easy to install. The buffer gaskets 7 play a role in pressing the blade 3 with the upper connecting seat 1 and the lower connecting seat 2. During flight, they can reduce the vibration generated between the blade 3 and the upper connecting seat 1 and the lower connecting seat 2. The buffer gaskets 7 are located in the gasket groove 13, which can prevent the buffer gaskets 7 from moving. The bottom surface of the buffer gasket 7 in the upper connecting seat 1 abuts against the top surface of the blade 3, and the top surface of the buffer gasket 7 in the lower connecting seat 2 abuts against the bottom surface of the blade 3.

[0016] The bottom of the lower connecting seat 2 is provided with a receiving groove 2 12, the plug screw 4 extends downward into the receiving groove 2 12, and the anti-loosening nut 5 is located in the receiving groove 2 12. The top of the upper connecting seat 1 is provided with a receiving groove 1 6, and the screw head of the plug screw 4 is received in the receiving groove 1 6. The screw head of the plug screw 4 is received in the receiving groove 1 6, and the nut 5 is received in the receiving groove 2 12, which is more aesthetically pleasing.

[0017] The buffer pad 7 is made of Teflon or PEEK material; it has a certain degree of elasticity and can cushion the blades.

[0018] The outer part of the screw 4 is fitted with a steel sleeve 8, and the outer part of the steel sleeve 8 is fixedly connected to the blade 3; specifically, the blade 3 is fixedly connected to the steel sleeve 8, and the steel sleeve 8 rotates around the screw 4.

[0019] The limiting mechanism includes a limiting post 9 and a limiting groove 10. The limiting post 9 is vertically fixed to the top of the lower connecting seat 2, and the limiting groove 10 is formed at the bottom of the upper connecting seat 1. During the assembly of the upper connecting seat 1 and the lower connecting seat 2...

[0020] The limiting post 9 is fitted with a rubber sleeve 11; the outside of the rubber sleeve 11 is in contact with the outside of one end of the blade 3. The rubber sleeve 11 has a certain elasticity to prevent the blade 3 from colliding with the limiting post 9 and causing damage.

Claims

1. A carbon fiber propeller folding device, comprising an upper connecting seat and a lower connecting seat connected to each other, characterized in that: A limiting mechanism is provided between the upper connecting seat and the lower connecting seat. A foldable blade mechanism is provided between the upper connecting seat and the lower connecting seat and on both sides of the limiting mechanism. The foldable blade mechanism includes a blade that is rotatably disposed between the upper connecting seat and the lower connecting seat. A plug screw is inserted between the upper connecting seat, the lower connecting seat and the blade. A nut is connected to the plug screw. A buffer pad is provided between the top of the blade and the bottom of the upper connecting seat. A buffer pad is also provided between the bottom of the blade and the top of the lower connecting seat. A pad groove is opened at the bottom of the upper connecting seat and the top of the lower connecting seat. Two buffer pads are respectively located in the pad grooves adjacent to them.

2. The carbon fiber propeller folding device according to claim 1, characterized in that: The bottom of the lower connector is provided with a receiving groove 2, the plug screw extends downward into the receiving groove 2, and the nut is located in the receiving groove 2. The top of the upper connector is provided with a receiving groove 1, and the screw head of the plug screw is received in the receiving groove 1.

3. The carbon fiber propeller folding device according to claim 1, characterized in that: The cushioning pads are made of Teflon or PEEK material.

4. The carbon fiber propeller folding device according to claim 1, characterized in that: The outer part of the screw is fitted with a steel sleeve, and the outer part of the steel sleeve is fixedly connected to the blade.

5. A carbon fiber propeller folding device according to claim 1, characterized in that: The limiting mechanism includes a limiting post and a limiting groove. The limiting post is vertically fixed to the top of the lower connecting seat, and the limiting groove is opened at the bottom of the upper connecting seat.

6. A carbon fiber propeller folding device according to claim 5, characterized in that: The limiting post is fitted with a rubber sleeve.

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