Propeller suitable for small unmanned aerial vehicle

Abstract

The propeller suitable for the small unmanned aerial vehicle comprises a blade, supporting rods, a first connecting assembly and a second connecting assembly, the multiple supporting rods are fixedly installed in the blade, a hole is formed in a semi-annular clamping block, the semi-annular clamping block is arranged in the first connecting assembly, and the second connecting assembly is arranged in the hole. A fixing frame is connected to the lower portion of the first connecting assembly, a connecting block is fixedly installed at the bottom of the outer side of the fixing frame and connected into a connecting shell, a second connecting assembly is installed in the connecting block, a motor is fixedly connected to the bottom of the outer side of the connecting shell, and a through hole is formed in the side face of the connecting shell. The first connecting assembly comprises a lower shell, an upper cover, an inner fixing ring, an auxiliary rod and a bolt, and the inner fixing ring and the auxiliary rod are fixedly installed in the lower shell. The propeller suitable for the small unmanned aerial vehicle is light in weight and high in bearing pressure, the single blade is convenient to disassemble, and the motor is convenient to disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of small unmanned aerial vehicles, and particularly relates to a propeller suitable for small unmanned aerial vehicles. Background Technique

[0002] The propeller for a small unmanned aerial vehicle refers to a device that rotates the propeller blades in the air and converts the rotational power of the engine into propulsion. Propellers are divided into many types and are widely used, such as the propellers of airplanes and ships. A device that rotates the propeller blades in the air and converts the rotational power of the engine into propulsion or lift is simply called a propeller.

[0003] Referring to the Chinese patent authorization announcement number CN212195896U, the authorization announcement date is December 22, 2020. It discloses a propeller for an unmanned aerial vehicle that is easy to replace, belonging to the technical field of propellers. It includes a mounting block. Both sides of the mounting block are welded and fixed with propeller blades. The bottom of the propeller blades is adhesively fixed with two clamping blocks. Slots are opened on both clamping blocks. A connecting plate is snap-fitted in the two slots. A screw is screwed on the mounting block. This propeller for an unmanned aerial vehicle that is easy to replace is provided with a screw and a patch. The screw can rotate clockwise on the mounting block, which is convenient for pushing the patch to move, so that the patch fits on the mounting shaft of the unmanned aerial vehicle, increasing the firmness of the mounting block clamped on the mounting shaft. When replacing, only need to rotate the screw counterclockwise to drive the patch to disengage from the mounting shaft, and the replacement is convenient and fast. The slots on the clamping blocks play a role in clamping the connecting plate. The connecting plate is convenient for increasing the toughness and compressive resistance of the propeller blades, preventing the propeller blades from being easily broken when bearing pressure and affecting the flight of the unmanned aerial vehicle.

[0004] However, when the existing propeller suitable for small unmanned aerial vehicles uses a connecting plate to enhance the pressure-bearing capacity of the propeller blades, the connecting plate has a certain weight, which will increase the weight of the propeller blades, thereby reducing the stability and making it inconvenient to disassemble a single propeller blade. Therefore, we propose a propeller suitable for small unmanned aerial vehicles to solve the problems raised above. Content of the Utility Model

[0005] The purpose of the utility model is to provide a propeller suitable for small unmanned aerial vehicles, so as to solve the problem that when the existing propeller suitable for small unmanned aerial vehicles uses a connecting plate to enhance the pressure-bearing capacity of the propeller blades, the connecting plate has a certain weight, which will increase the weight of the propeller blades, thereby reducing the stability and making it inconvenient to disassemble a single propeller blade as mentioned in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A propeller suitable for small unmanned aerial vehicles, comprising a blade, a support rod, a first connection assembly and a second connection assembly. A plurality of support rods are fixedly installed inside the blade. A semi-circular clamping block is fixedly connected to the side of the blade. A hole is provided inside the semi-circular clamping block. The semi-circular clamping block is arranged inside the first connection assembly. A fixing frame is connected below the first connection assembly. A connection block is fixedly installed at the outer bottom of the fixing frame. The connection block is connected inside a connection shell. A second connection assembly is installed inside the connection block. A motor is fixedly connected to the outer bottom of the connection shell. A through hole is provided on the side of the connection shell.

[0007] Preferably, the first connection assembly includes a lower shell, an upper cover, an inner fixing ring, an auxiliary rod and a bolt. An inner fixing ring and an auxiliary rod are fixedly installed inside the lower shell.

[0008] Preferably, an upper cover is arranged above the inner fixing ring. Threaded holes are provided in the middle of both the lower shell and the upper cover. The lower shell and the upper cover are connected by bolts. A fixing frame is fixedly connected to the outer bottom of the lower shell.

[0009] Preferably, a semi-circular clamping block is arranged outside the auxiliary rod. Semi-circular clamping blocks are arranged at non-coincident positions of the lower shell and the inner fixing ring.

[0010] Preferably, the second connection assembly includes a connection cavity, a spring, a fixing rod and a clamping rod. A spring is fixedly connected inside the connection cavity. One end of the spring away from the connection cavity is fixedly connected to a clamping rod. The clamping rod is slidably connected inside the connection shell.

[0011] Preferably, a fixing rod is fixedly connected to one end of the clamping rod close to the spring. The fixing rod is arranged inside the spring. One end of the clamping rod away from the spring is arranged inside the through hole.

[0012] Preferably, the connection cavity is provided inside the connection block.

[0013] Compared with the prior art, the beneficial effects of the present utility model are: The propeller suitable for small unmanned aerial vehicles is lighter in weight and has stronger pressure resistance. It is convenient to disassemble a single blade and the motor.

[0014] 1. Support rods are provided. The blade is made of a lighter material and is hollow inside, thereby reducing the weight of the material. A plurality of support rods are fixedly installed in the hollow part, and their two ends are respectively fixedly installed at the top and bottom of the blade, thereby improving the pressure resistance of the blade.

[0015] 2. A semi-circular clamping block and a first connection assembly are provided. The semi-circular clamping block penetrates through the auxiliary rod and is clamped inside the lower shell. An upper cover is arranged above the lower shell, thereby connecting the blade. Unscrew the bolts inside the upper cover and the lower shell, and directly open the upper cover, thereby facilitating the disassembly of a single blade.

[0016] Further, the inner fixing ring and the auxiliary rod are used to make the connection of the plate annular clamping block more stable and prevent the paddle from shifting during rotation;

[0017] 3. A connecting block, a connecting shell and a second connecting component are provided. Two springs are fixed in the cavity of the connecting block. The springs push the clamping rod into the through hole of the connecting shell and press the clamping rod into the connecting cavity. The motor can be disassembled by pulling the connecting block upward;

[0018] Further, a fixing rod is arranged inside the spring. The fixing rod is fixedly installed at one end of the clamping rod close to the spring, so that the connection of the fixing rod is more stable. Description of the Drawings

[0019] Figure 1 It is a front sectional view structure diagram of the present utility model;

[0020] Figure 2 For the present utility model Figure 1 An enlarged structure diagram of part A in it;

[0021] Figure 3 For the present utility model Figure 1 An enlarged structure diagram of part B in it;

[0022] Figure 4 It is a front view structure diagram of the present utility model;

[0023] Figure 5 It is a top sectional view structure diagram of the present utility model;

[0024] Figure 6 It is a top view structure diagram of the present utility model;

[0025] Figure 7 It is a three-dimensional structure diagram of the paddle of the present utility model.

[0026] In the figure: 1, paddle; 2, support rod; 3, semi-annular clamping block; 4, first connecting component; 401, lower shell; 402, upper cover; 403, inner fixing ring; 404, auxiliary rod; 405, bolt; 5, fixing frame; 6, connecting block; 7, connecting shell; 8, second connecting component; 801, connecting cavity; 802, spring; 803, fixing rod; 804, clamping rod; 9, through hole; 10, motor. Detailed Embodiment

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-7 , the present utility model provides the following technical solutions:

[0029] Embodiment 1: The existing propellers suitable for small unmanned aerial vehicles are relatively heavy in weight and have a low pressure-bearing capacity. To solve this technical problem, the following technical content is disclosed in this embodiment:

[0030] A propeller suitable for a small unmanned aerial vehicle includes a blade 1, a support rod 2, a first connection component 4, and a second connection component 8. A plurality of support rods 2 are fixedly installed inside the blade 1. A semi-circular clamping block 3 is fixedly connected to the side of the blade 1. A hole is provided in the semi-circular clamping block 3. The semi-circular clamping block 3 is arranged inside the first connection component 4. A fixing frame 5 is connected below the first connection component 4. A connection block 6 is fixedly installed at the outer bottom of the fixing frame 5. The connection block 6 is connected inside a connection shell 7. A second connection component 8 is installed inside the connection block 6. The outer bottom of the connection shell 7 is fixedly connected to a motor 10. A through hole 9 is provided on the side of the connection shell 7;

[0031] As Figure 1 and Figure 2 shown, the blade 1 is made of a lighter material and is hollow inside, so as to reduce the material weight. A plurality of support rods 2 are installed in the internal hollow part. The support rods 2 are inclined and installed inside the blade 1, thereby improving the pressure-bearing capacity of the blade 1;

[0032] Embodiment 2: The existing propellers suitable for small unmanned aerial vehicles are not convenient for disassembling a single blade 1. To solve this technical problem, the following technical content is disclosed in this embodiment:

[0033] As Figure 1 , Figure 2 , Figures 4-6As shown, the first connecting component 4 includes a lower shell 401, an upper cover 402, an inner fixing ring 403, an auxiliary rod 404, and a bolt 405. The inner fixing ring 403 and the auxiliary rod 404 are fixedly installed inside the lower shell 401. The semi-circular clamping block 3 is connected through the outside of the auxiliary rod 404 and is arranged at a non-coincident position between the lower shell 401 and the inner fixing ring 403. The upper cover 402 is arranged above the inner fixing ring 403. Threaded holes are provided in the middle of both the lower shell 401 and the upper cover 402. The lower shell 401 and the upper cover 402 are connected by the bolt 405. When the blade 1 needs to be disassembled, the nut of the bolt 405 is unscrewed, the screw rod of the bolt 405 is screwed out from the lower shell 401 and the upper cover 402, the upper cover 402 is directly opened, and the semi-circular clamping block 3 is taken out. The semi-circular clamping block 3 is fixedly connected to the side of the blade 1, so as to disassemble the blade 1. When installing the blade 1, the through hole 9 in the semi-circular clamping block 3 is aligned with the auxiliary rod 404, so that the auxiliary rod 404 is connected in the through hole 9. After aligning the notch on the upper cover 402 with the position of the blade 1, it can be fixed with the bolt 405. The auxiliary rod 404 and the inner fixing ring 403 can prevent the blade 1 from shifting during operation;

[0034] Embodiment 3: The existing propeller suitable for small unmanned aerial vehicles is not convenient for disassembling the motor 10. To solve this technical problem, the following technical content is disclosed in this embodiment:

[0035] As Figure 1 , Figure 3 and Figure 6 shown, the second connecting component 8 includes a connecting cavity 801, a spring 802, a fixing rod 803, and a clamping rod 804. The connecting cavity 801 is opened in the connecting block 6, and a through hole 9 is opened on the side of the connecting shell 7. When the motor 10 needs to be disassembled, the clamping rod 804 is slidably connected in the connecting shell 7. At the same time, the clamping rod 804 is pressed into the connecting cavity 801 so that the clamping rod 804 leaves the through hole 9. The connecting shell 7 is pulled downward to separate the through hole 9 from the clamping rod 804. A connecting block 6 is arranged inside the connecting shell 7. The connecting shell 7 is continuously pulled downward until the connecting block 6 and the connecting shell 7 are separated. The bottom of the outside of the connecting shell 7 is fixedly connected to the motor 10, and the top of the connecting block 6 is fixedly connected to the fixing frame 5. The fixing frame 5 is fixedly connected to the bottom end of the outside of the lower shell 401, so that the motor 10 is separated from the lower shell 401.

[0036] When installing the motor 10, press the clamping rod 804 into the connection cavity 801 again. At the same time, sleeve the connection shell 7 on the outside of the bottom of the connection block 6. Align the through hole 9 on the side wall of the connection shell 7 with the clamping rod 804. A spring 802 is fixedly connected inside the connection cavity 801. One end of the spring 802 away from the connection cavity 801 is fixedly connected with the clamping rod 804. When the clamping rod 804 is aligned with the through hole 9, the spring 802 pushes it into the through hole 9, thereby connecting the motor 10. One end of the clamping rod 804 close to the spring 802 is fixedly connected with a fixing rod 803. The fixing rod 803 is arranged inside the spring 802, so that the connection of the clamping rod 804 is more stable.

[0037] The above completes a series of operations for the propeller suitable for small unmanned aerial vehicles. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0038] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, it will not be elaborated here.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A propeller suitable for a small unmanned aerial vehicle, comprising a blade (1), a support rod (2), a first connecting component (4) and a second connecting component (8), characterized in that: A plurality of support rods (2) are fixedly installed inside the blade (1); a semi-annular clamping block (3) is fixedly connected to the side of the blade (1); a hole is provided in the semi-annular clamping block (3); the semi-annular clamping block (3) is arranged in a first connecting component (4); a fixing frame (5) is connected below the first connecting component (4); a connecting block (6) is fixedly installed at the outer bottom of the fixing frame (5); the connecting block (6) is connected to a connecting shell (7); a second connecting component (8) is installed in the connecting block (6); a motor (10) is fixedly connected to the outer bottom of the connecting shell (7); and a through hole (9) is provided on the side of the connecting shell (7).

2. A propeller suitable for a small UAV according to claim 1, characterized in that: The first connecting assembly (4) comprises a lower shell (401), an upper cover (402), an inner fixing ring (403), an auxiliary rod (404) and a bolt (405); the inner fixing ring (403) and the auxiliary rod (404) are fixedly installed inside the lower shell (401).

3. A propeller suitable for a small UAV according to claim 2, characterized in that: An upper cover (402) is arranged above the inner fixing ring (403), threaded holes are provided in the middle of the lower shell (401) and the upper cover (402), the lower shell (401) and the upper cover (402) are connected by bolts (405), and a fixing frame (5) is fixedly connected to the outer bottom of the lower shell (401).

4. A propeller suitable for a small UAV according to claim 2, characterized in that: A semi-annular clamping block (3) is arranged on the outside of the auxiliary rod (404), and a semi-annular clamping block (3) is arranged at a non-overlapping position between the lower shell (401) and the inner fixing ring (403).

5. The propeller suitable for a small drone according to claim 1, characterized in that: The second connecting assembly (8) comprises a connecting cavity (801), a spring (802), a fixing rod (803) and a clamping rod (804); the connecting cavity (801) is fixedly connected with the spring (802); one end of the spring (802) away from the connecting cavity (801) is fixedly connected with the clamping rod (804); and the clamping rod (804) is slidably connected in the connecting shell (7).

6. A propeller suitable for a small UAV according to claim 5, characterized in that: One end of the clamping rod (804) close to the spring (802) is fixedly connected to a fixing rod (803), the fixing rod (803) is arranged in the spring (802), and one end of the clamping rod (804) away from the spring (802) is arranged in the through hole (9).

7. A propeller suitable for a small UAV according to claim 5, characterized in that: The connecting cavity (801) is opened in the connecting block (6).

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