Variable pitch propeller

Abstract

The utility model belongs to the technical field of propellers, and particularly discloses a variable pitch propeller which comprises a shell, a connecting cylinder is fixedly connected to the top of the shell, a connecting disc is arranged in the connecting cylinder, and a dismounting assembly is arranged in the connecting disc. The number of the disassembling assemblies is two, each disassembling assembly comprises a connecting piece, the connecting piece is fixedly connected with the inner wall of the connecting disc, a sliding groove is formed in the connecting piece, a spring is fixedly connected into the sliding groove, one side of the spring is fixedly connected with a limiting clamping block, the limiting clamping block is slidably connected with the sliding groove, and the top of the limiting clamping block is fixedly connected with an L-shaped rod; according to the detachable variable pitch propeller, the propeller body and the shell can be rapidly detached through the detaching assembly, compared with a non-detachable variable pitch propeller in the prior art, the detachable variable pitch propeller can be more conveniently maintained and detached, the whole unmanned aerial vehicle does not need to be detached, the maintenance time and energy are saved, and meanwhile the damage risk of other parts is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of propellers, and more specifically, to a variable pitch propeller. Background Art

[0002] A variable pitch propeller is a propeller that can automatically (or manually) change the blade angle according to the flight speed and altitude during flight; during takeoff, the forward speed is low, and the variable pitch device reduces the propeller blade angle, so that the engine operates at maximum speed and maximum power, thereby allowing the propeller to produce maximum thrust; during level flight, the variable pitch mechanism can change the pitch to a high pitch propeller suitable for this flight state. At this time, the propeller can obtain the maximum useful power from the engine at maximum speed.

[0003] Existing variable pitch propellers usually consist of multiple parts, which are used to change the angle of the blades to adjust thrust and flight performance. In the design of variable pitch propellers for drones, in order to reduce weight and improve performance, a more compact and integrated design is often adopted. Due to the non-detachable nature of drone propeller components, once a component needs to be repaired or replaced, the entire drone may need to be disassembled. This maintenance method does consume more time and effort, and also increases the risk of damage to other components. Utility Model Content

[0004] In order to solve the above problems, the present application provides a variable pitch propeller.

[0005] The variable pitch propeller provided in this application adopts the following technical solution:

[0006] A variable pitch propeller comprises a shell, a connecting cylinder is fixedly connected to the top of the shell, a connecting disk is arranged inside the connecting cylinder, and a disassembly assembly is arranged inside the connecting disk;

[0007] There are two groups of disassembly components, each group of disassembly components includes a connecting piece, the connecting piece is fixedly connected to the inner wall of the connecting plate, a sliding groove is opened inside the connecting piece, a spring is fixedly connected inside the sliding groove, a limiting block is fixedly connected to one side of the spring, the limiting block is slidably connected to the sliding groove, and an L-shaped rod is fixedly connected to the top of the limiting block.

[0008] Through the above technical solution, the disassembly assembly can realize the rapid separation of the propeller body and the shell. Compared with the non-detachable variable-pitch propeller in the prior art, it can be repaired and disassembled more conveniently without disassembling the entire drone, saving maintenance time and energy, while reducing the risk of damage to other components.

[0009] Furthermore, each disassembly assembly also includes a push block, which is fixedly connected to the L-shaped rod. A telescopic limit rod is fixedly connected to the bottom of the L-shaped rod. A slot is provided at one end of the connecting plate, and the telescopic limit rod is plugged into the slot.

[0010] Furthermore, a motor is arranged inside the shell, an output end of the motor is fixedly connected to a transmission shaft, and a sleeve is arranged on the top of the transmission shaft.

[0011] Furthermore, a paddle shaft is provided inside the sleeve, the paddle shaft is rotatably connected to the sleeve, and a cross clamp block is fixedly connected to the bottom of the sleeve.

[0012] Through the above technical solution, when the motor drives the propeller shaft to rotate through the transmission shaft, the sleeve will not rotate because it is rotationally connected to the propeller shaft.

[0013] Furthermore, a cross groove is provided on the top of the transmission shaft, and the cross clamping block is clamped with the cross groove.

[0014] Through the above technical solution, when installing the propeller body, the cross block at the bottom of the propeller shaft is inserted into the cross slot of the transmission shaft, and then the transmission shaft is driven to rotate by the motor, thereby driving the propeller body to rotate, so that the power of the motor can be effectively transmitted to the propeller body, driving the drone to fly.

[0015] Furthermore, two slots are provided inside the sleeve, and two limit blocks are respectively engaged with the corresponding slots. A sealing gasket is fixedly connected to the top of each slide slot, and the two sealing gaskets are respectively located on one side of the corresponding L-shaped rod.

[0016] Through the above technical solution, the sealing gasket is made of elastic material, so it can provide sealing performance while not affecting the normal movement of the L-shaped rod.

[0017] Furthermore, both ends of the sleeve away from the two L-shaped rods are fixedly connected with fixing rods, the fixing rods and the connecting plate are provided with threaded grooves inside, and the insides of the two threaded grooves are threadedly connected with fixing bolts.

[0018] Through the above technical solution, when the limit block is inserted, the fixing bolt is screwed into the threaded groove of the fixing rod and the connecting plate, which further ensures the stable docking of the propeller body and the transmission shaft.

[0019] Furthermore, a plurality of connecting plates are fixedly connected to the outside of the connecting disk, the outer ends of the plurality of connecting plates are fixedly connected to the connecting tube, the top end of the propeller shaft is fixedly connected to a connecting piece, and the outer wall of the connecting piece is fixedly connected to a plurality of propeller bodies.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] (1) The utility model facilitates the installation and disassembly of the propeller body by providing a disassembly component. Specifically, when the propeller body needs to be disassembled, the telescopic limit rod is retracted and lifted, and then the push block is pushed. The push block drives the L-shaped rod to move outward. When the L-shaped rod moves outward, it drives the limit block to disengage from the slot of the sleeve, thereby realizing the disassembly of the propeller body on the top of the propeller shaft and the rapid separation of the propeller body and the shell. Compared with the non-detachable variable pitch propeller in the prior art, it can be repaired and disassembled more conveniently without disassembling the entire drone, saving maintenance time and energy, and reducing the risk of damage to other components;

[0022] (2) When the propeller body needs to be installed, the cross block at the bottom of the propeller shaft can be inserted into the cross slot of the transmission shaft, and then the transmission shaft is driven by the motor to rotate, thereby driving the propeller body to rotate, so that the power of the motor can be effectively transmitted to the propeller body to drive the UAV to fly;

[0023] (3) In the present invention, after the limit block is inserted, the fixing bolt is screwed into the threaded grooves of the fixing rod and the connecting plate, thereby further ensuring the stable connection between the propeller body and the transmission shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the connection structure between the transmission shaft and the propeller shaft of the utility model;

[0026] Figure 3 It is a schematic diagram of the connection structure between the propeller shaft and the cross clamp block of the utility model;

[0027] Figure 4 This is a schematic diagram of the internal structure of the connection disk of the utility model;

[0028] Figure 5 It is a plan view of the connection disk of the utility model;

[0029] Figure 6 For the utility model Figure 5 A magnified view of the structure in the middle.

[0030] Explanation of the reference numerals in the accompanying drawings: 1. Shell; 2. Connecting tube; 3. Paddle body; 4. Motor; 5. Transmission shaft; 6. Sleeve; 7. Connecting plate; 8. Cross block; 9. Paddle shaft; 10. Connecting piece; 11. Sealing gasket; 12. L-shaped rod; 13. Limit block; 14. Connecting plate; 15. Fixing rod; 16. Fixing bolt; 17. Push block; 18. Telescopic limiting rod; 19. Slide groove; 20. Spring. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0032] Reference Figure 1-Figure 6 A variable pitch propeller comprises a housing 1, a connecting tube 2 is fixedly connected to the top of the housing 1, a connecting disk 7 is arranged inside the connecting tube 2, and a disassembly assembly is arranged inside the connecting disk 7;

[0033] There are two groups of disassembly components, each group of disassembly components includes a connecting member 10, the connecting member 10 is fixedly connected to the inner wall of the connecting disk 7, a slide groove 19 is opened inside the connecting member 10, a spring 20 is fixedly connected inside the slide groove 19, one side of the spring 20 is fixedly connected to a limit block 13, the limit block 13 is slidably connected to the slide groove 19, the top of the limit block 13 is fixedly connected to an L-shaped rod 12, each group of disassembly components also includes a push block 17, the push block 17 is fixedly connected to the L-shaped rod 12, the bottom of the L-shaped rod 12 is fixedly connected to a telescopic limit rod 18, one end of the connecting disk 7 is opened with a slot, and the telescopic limit rod 18 is plugged into the slot.

[0034] The provision of the disassembly assembly facilitates the installation and disassembly of the propeller body 3. Specifically, when the propeller body 3 needs to be disassembled, the telescopic limit rod 18 is retracted and lifted, and then the push block 17 is pushed. The push block 17 drives the L-shaped rod 12 to move outward. When the L-shaped rod 12 moves outward, it drives the limit block 13 to disengage from the slot of the sleeve 6. Then the fixing bolt 16 is screwed out to realize the disassembly of the propeller body 3 on the top of the propeller shaft 9, and the rapid separation of the propeller body 3 and the shell 1 is realized. Compared with the non-detachable variable pitch propeller in the prior art, it can be repaired and disassembled more conveniently without disassembling the entire drone, saving maintenance time and energy, and reducing the risk of damage to other components.

[0035] Reference Figure 1-Figure 3 A motor 4 is provided inside the housing 1, and a transmission shaft 5 is fixedly connected to the output end of the motor 4. A sleeve 6 is provided on the top of the transmission shaft 5, and a paddle shaft 9 is provided inside the sleeve 6. The paddle shaft 9 is rotatably connected to the sleeve 6. A cross clamp 8 is fixedly connected to the bottom of the sleeve 6. A cross groove is provided on the top of the transmission shaft 5, and the cross clamp 8 is clamped with the cross groove.

[0036] When the propeller body 3 needs to be installed, the cross block 8 at the bottom of the propeller shaft 9 can be inserted into the cross slot of the transmission shaft 5, and then the transmission shaft 5 is driven to rotate by the motor 4, thereby driving the propeller body 3 to rotate, so that the power of the motor 4 can be effectively transmitted to the propeller body 3, driving the drone to fly.

[0037] Reference Figure 4-Figure 6 Two card slots are provided inside the sleeve 6, and two limit blocks 13 are respectively engaged with the corresponding card slots. A sealing gasket 11 is fixedly connected to the top of each slide groove 19, and the two sealing gaskets 11 are respectively located on one side of the corresponding L-shaped rod 12. Both ends of the sleeve 6 away from the two L-shaped rods 12 are fixedly connected to fixing rods 15, and threaded grooves are provided inside the fixing rod 15 and the connecting plate 7, and fixing bolts 16 are threadedly connected inside the two threaded grooves.

[0038] When the cross block 8 at the bottom of the paddle shaft 9 is inserted into the cross groove of the concave transmission shaft 5, the spring 20 is in a compressed state, and the limit block 13 is close to the outer wall of the sleeve 6. When the limit block 13 contacts the groove, the spring 20 rebounds, and the limit block 13 is inserted into the groove of the sleeve 6. The telescopic limit rod 18 is also inserted into the slot. At this time, the cross block 8 and the cross groove are docked. When the limit block 13 is close to the sleeve 6, the L-shaped rod 12 will also squeeze the sealing gasket 11. Because the sealing gasket 11 is made of elastic material, it can provide sealing performance while not affecting the normal movement of the L-shaped rod 12.

[0039] After the limiting block 13 is inserted, the fixing bolt 16 is screwed into the threaded grooves of the fixing rod 15 and the connecting plate 7 , thereby further ensuring the stable docking of the propeller body 3 and the transmission shaft 5 .

[0040] Reference Figure 1-Figure 5 The outside of the connecting disk 7 is fixedly connected with a plurality of connecting plates 14, the outer ends of the plurality of connecting plates 14 are fixedly connected to the connecting tube 2, the top end of the paddle shaft 9 is fixedly connected with a connecting piece 10, and the outer wall of the connecting piece 10 is fixedly connected with a plurality of paddle bodies 3.

[0041] Working principle: when the cross block 8 at the bottom of the propeller shaft 9 is inserted into the cross slot of the concave transmission shaft 5, the spring 20 is in a compressed state, and the limit block 13 is close to the outer wall of the sleeve 6. When the limit block 13 contacts the slot, the spring 20 rebounds, and the limit block 13 is inserted into the slot of the sleeve 6. The telescopic limit rod 18 is also inserted into the slot. At this time, the cross slot of the cross block 8 is docked, and then the transmission shaft 5 is driven to rotate by the motor 4, thereby driving the propeller body 3 to rotate, and then the drone can operate normally. When disassembly is required, the telescopic limit rod 18 is retracted and lifted, and then the push block 17 is pushed. The push block 17 drives the L-shaped rod 12 to move outward. When the L-shaped rod 12 moves outward, it drives the limit block 13 to disengage from the slot of the sleeve 6, thereby realizing the disassembly of the propeller body 3 at the top of the propeller shaft 9 and the rapid disassembly of the propeller body 3 and the shell 1.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A variable pitch propeller, characterized in that: include: A shell (1), the top of the shell (1) being fixedly connected to a connecting cylinder (2), a connecting disk (7) being provided inside the connecting cylinder (2), and a disassembly assembly being provided inside the connecting disk (7); The disassembly components are provided in two groups, each group of the disassembly components comprises a connecting member (10), the connecting member (10) is fixedly connected to the inner wall of the connecting plate (7), a sliding groove (19) is provided inside the connecting member (10), a spring (20) is fixedly connected inside the sliding groove (19), a limiting block (13) is fixedly connected to one side of the spring (20), the limiting block (13) is slidably connected to the sliding groove (19), and an L-shaped rod (12) is fixedly connected to the top of the limiting block (13).

2. A variable pitch propeller according to claim 1, characterized in that: Each disassembly assembly further comprises a push block (17), the push block (17) being fixedly connected to the L-shaped rod (12), a telescopic limit rod (18) being fixedly connected to the bottom of the L-shaped rod (12), a slot being provided at one end of the connection plate (7), the telescopic limit rod (18) being plugged into the slot.

3. A variable pitch propeller according to claim 1, characterized in that: A motor (4) is provided inside the housing (1); an output end of the motor (4) is fixedly connected to a transmission shaft (5); and a sleeve (6) is provided on the top of the transmission shaft (5).

4. A variable pitch propeller according to claim 3, characterized in that: A paddle shaft (9) is provided inside the sleeve (6), the paddle shaft (9) is rotatably connected to the sleeve (6), and a cross clamping block (8) is fixedly connected to the bottom of the sleeve (6).

5. A variable pitch propeller according to claim 4, characterized in that: A cross groove is provided on the top of the transmission shaft (5), and the cross clamping block (8) is clamped with the cross groove.

6. A variable pitch propeller according to claim 3, characterized in that: Two slots are provided inside the sleeve (6), and the two limit blocks (13) are respectively engaged with the corresponding slots. A sealing gasket (11) is fixedly connected to the top of each slide groove (19), and the two sealing gaskets (11) are respectively located on one side of the corresponding L-shaped rod (12).

7. A variable pitch propeller according to claim 3, characterized in that: Both ends of the sleeve (6) away from the two L-shaped rods (12) are fixedly connected to fixing rods (15), the fixing rods (15) and the connecting plate (7) are provided with threaded grooves inside, and fixing bolts (16) are threadedly connected inside the two threaded grooves.

8. A variable pitch propeller according to claim 4, characterized in that: The outside of the connection disk (7) is fixedly connected to a plurality of connection plates (14), the outer ends of the plurality of connection plates (14) are fixedly connected to the connection tube (2), the top end of the paddle shaft (9) is fixedly connected to a connection piece (10), and the outer wall of the connection piece (10) is fixedly connected to a plurality of paddle bodies (3).

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