Propeller fixing device

Abstract

The utility model discloses a propeller fixing device, which belongs to the technical field of propeller fixing, and comprises a motor and a propeller body in transmission connection with the power output end of the motor, the power output end of the motor is provided with a connecting seat, the connecting seat is detachably connected with a mounting seat, and the mounting seat is detachably connected with the motor. A threaded column connected with the propeller body in a sleeving mode is fixedly connected to the middle of the upper surface of the mounting base, a sliding groove is formed in the edge of the surface of the mounting base, guide grooves are symmetrically formed in the inner wall of the sliding groove, and the mounting base can be in butt joint with a guide column head through a spiral hole groove formed in the surface of a fastening disc; the guide blocks arranged on the side walls of the clamping blocks are matched with the guide grooves to slide till the clamping blocks abut against the middle section of the propeller body, and therefore the propeller body can be disassembled and assembled only by rotating the fastening disc, and use is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of propeller fixing, and more specifically, to a propeller fixing device. Background Art

[0002] With the development of technology and the improvement of people's living standards, unmanned aerial vehicles (UAVs) are becoming more and more common as aerial photography devices and industry application carriers. In the prior art, the power device of a UAV is connected to a propeller through a motor. Specifically, a gasket is directly installed on the propeller blade, and then a bolt is installed on the gasket. This bolt can be directly connected to the bolt hole at the bottom of the motor, and the propeller and the motor are firmly connected together by directly tightening the bolt with an external force. Installing a bolt on the propeller, directly connecting the bolt to the bolt hole of the motor, and tightening it with an external force, this reinforcement method has the following defects: 1. It is not convenient to disassemble. During the process of disassembling the propeller, it is necessary to directly tighten the bolt connecting the propeller blade to the motor to remove the propeller. This process is not conducive to the quick disassembly between the motor and the propeller blade; 2. It is easy to damage the motor. When disassembling the bolt connecting the propeller of the aircraft to the bolt hole of the motor, it is easy to accelerate the damage of the bolt hole of the motor during the frequent disassembly of the propeller bolt, resulting in problems such as the bolt hole of the motor being stripped or the bolt being stripped, because the reinforcement bolt on the propeller blade is directly connected to the bolt hole on the motor, and the propeller and the motor are firmly connected together by tightening the bolt with an external force; 3. It is not convenient to maintain. After the bolt hole of the motor is damaged and stripped, it is necessary to replace the new motor to continue using, which is a time-consuming, laborious and costly matter.

[0003] In the prior patent, a fixed connection device between the motor and the propeller on a UAV. The connection device in the patent authorization announcement number CN205971837U is respectively connected to the motor and the propeller. When disassembling the propeller, the bolt used to connect the propeller and the connecting piece can be directly removed to disassemble the propeller, without having to remove the propeller by tightening the bolt connected to the bolt hole of the motor. This installation and disassembly is convenient, solves the problems such as affecting the service life of the motor during the frequent disassembly process of the motor and the propeller, and realizes the quick disassembly between the motor and the propeller.

[0004] However, during the process of disassembling and assembling the propeller in the patent authorization announcement number CN205971837U, it is still necessary to tighten multiple bolts, which reduces the disassembly and assembly efficiency of the propeller to a certain extent and there is still room for improvement. Therefore, we propose a propeller fixing device to solve the above existing problems. Summary of the Utility Model

[0005] 1. Technical Problems to be Solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a propeller fixing device, which can be connected with the guide column head through the spiral hole groove arranged on the surface of the fastening disk. As the fastening disk rotates, the guide block arranged on the side wall of the clamping block slides in cooperation with the guide groove until the clamping block abuts against the middle section of the propeller body. Therefore, the propeller body can be disassembled and assembled only by rotating the fastening disk, which is very convenient to use.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A propeller fixing device comprises a motor and a propeller body drivingly connected to a power output end of the motor, wherein a connecting seat is installed at the power output end of the motor;

[0010] The connecting seat is detachably connected to a mounting seat, a threaded column connected to the sleeve of the propeller body is fixedly connected to the middle of the upper surface of the mounting seat, a sliding groove is provided on the surface edge of the mounting seat, and a guide groove is symmetrically provided on the inner wall of the sliding groove;

[0011] The inner side of the slide groove is slidably connected with a clamping block abutting against the middle section of the propeller body, the outer wall of the clamping block is integrally formed with a guide block slidably connected with the guide groove, and a guide column head is installed on the top of the clamping block;

[0012] A fastening plate is detachably connected to the top of the propeller body, a spiral hole groove is provided on the surface of the fastening plate and is slidably connected to the guide column head, a fixing seat is integrally formed in the middle of the fastening plate, and a threaded hole is provided at the bottom of the fixing seat and is threadedly connected to the threaded column.

[0013] Furthermore, an anti-loosening component is installed between the propeller body and the fastening plate;

[0014] The release assembly comprises an anti-loosening spring sheet and a flat washer which are sequentially sleeved on the threaded column.

[0015] Furthermore, a screw hole is provided on the surface of the connecting seat, and a countersunk hole is provided at a position of the mounting seat corresponding to the screw hole.

[0016] Furthermore, three slide grooves are specifically provided, and the angle between two adjacent slide grooves corresponding to the central axis of the threaded column is 120°.

[0017] Furthermore, a hexagonal recessed hole is formed on the top of the fixing seat.

[0018] Furthermore, the axis lines of the output shaft, the connecting seat, the mounting seat and the fastening plate of the motor are all located on the same straight line.

[0019] Further, an assembly seat is integrally formed at the middle position of the propeller body, and the inner diameter of the assembly seat is adapted to the outer diameter of the threaded column.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the advantages of the present utility model are as follows:

[0022] (1) In this solution, the mounting seat is fixed on the connecting seat, then the clamping block is installed inside the sliding groove, and then the propeller body is installed at the threaded column, and the middle part of the propeller body is fitted with the upper surface of the mounting seat. Finally, the threaded hole provided at the bottom of the fixing seat is screwed with the threaded column, and at the same time, the spiral hole groove provided on the surface of the fastening plate is docked with the guiding head. As the fastening plate rotates, the guiding block provided on the side wall of the clamping block cooperates with the guiding groove to slide until the clamping block abuts against the middle part of the propeller body. Therefore, only by rotating the fastening plate can the disassembly and assembly of the propeller body be realized, which is very convenient to use.

[0023] (2) In this solution, during the rotation of the fastening plate, the anti-loosening elastic piece abuts against the middle position of the propeller body, while the flat washer is closely fitted with the fastening plate. Therefore, under the action of the self-elastic force of the anti-loosening elastic piece, the loosening of the fastening plate can be effectively prevented, thereby ensuring the fixing effect on the propeller body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0025] Figure 2 is a disassembled schematic diagram of the present utility model;

[0026] Figure 3 is a structural schematic diagram of the connecting seat of the present utility model;

[0027] Figure 4 is a structural schematic diagram of the mounting seat of the present utility model;

[0028] Figure 5 is a structural schematic diagram of the clamping block of the present utility model;

[0029] Figure 6 is a structural schematic diagram of the anti-loosening assembly of the present utility model;

[0030] Figure 7 is a structural schematic diagram of the fastening plate of the present utility model.

[0031] Explanation of the reference numerals in the drawings:

[0032] Motor; 2. Propeller body; 3. Connecting seat; 4. Mounting seat; 5. Threaded post; 6. Chute; 7. Guide groove; 8. Clamping block; 9. Guide block; 10. Guide head; 11. Tightening disc; 12. Spiral hole groove; 13. Fixed seat; 14. Threaded hole; 15. Hexagonal concave hole; 16. Anti-loosening spring piece; 17. Flat washer. Detailed implementation mode

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment

[0035] Please refer to Figure 1-7 , a propeller fixing device, including a motor 1 and a propeller body 2 drivingly connected to the power output end of the motor 1. A connecting seat 3 is installed at the power output end of the motor 1;

[0036] A mounting seat 4 is detachably connected to the connecting seat 3. A threaded post 5 sleeved and connected to the propeller body 2 is fixedly connected to the middle of the upper surface of the mounting seat 4. A chute 6 is formed at the edge of the surface of the mounting seat 4, and guide grooves 7 are symmetrically formed on the inner wall of the chute 6;

[0037] A clamping block 8 abutted against the middle section of the propeller body 2 is slidably connected inside the chute 6. Guide blocks 9 slidably connected to the guide grooves 7 are integrally formed on the outer walls of both sides of the clamping block 8. A guide head 10 is installed at the top of the clamping block 8;

[0038] A tightening disc 11 is detachably connected above the propeller body 2. A spiral hole groove 12 slidably connected to the guide head 10 is formed on the surface of the tightening disc 11. A fixed seat 13 is integrally formed in the middle of the tightening disc 11. A threaded hole 14 screwed with the threaded post 5 is formed at the bottom of the fixed seat 13;

[0039] It should be noted that when the propeller fixing device is in use, the mounting seat 4 is first fixed on the connecting seat 3, and then the clamping block 8 is installed on the inner side of the slide groove 6, and then the propeller body 2 is installed on the threaded column 5, and the middle section of the propeller body 2 is made to fit with the upper surface of the mounting seat 4, and finally the threaded hole 14 set at the bottom of the fixing seat 13 is screwed to the threaded column 5 (the rotation and tightening direction of the fixing seat 13 is consistent with the rotation direction of the output shaft of the motor 1), and at the same time, the spiral hole groove 12 set on the surface of the fastening disk 11 is connected to the guide column head 10. As the fastening disk 11 rotates, the guide block 9 set on the side wall of the clamping block 8 cooperates with the guide groove 7 to slide until the clamping block 8 is in contact with the middle section of the propeller body 2. Therefore, the propeller body 2 can be disassembled and assembled by rotating the fastening disk 11, which is very convenient to use.

[0040] like Figure 6 As shown, an anti-loosening component is installed between the propeller body 2 and the fastening plate 11;

[0041] The loosening assembly includes an anti-loosening spring sheet 16 and a flat washer 17 which are sequentially sleeved on the threaded column 5;

[0042] It should be noted that, in the process of rotating the fastening disk 11, the anti-loosening spring sheet 16 is brought into contact with the middle position of the propeller body 2, and the flat washer 17 is tightly fitted with the fastening disk 11. Therefore, under the action of the elastic force of the anti-loosening spring sheet 16 itself, the fastening disk 11 can be effectively prevented from loosening, thereby ensuring the fixing effect of the propeller body 2.

[0043] like Figure 3 , Figure 4 As shown, a screw hole is provided on the surface of the connecting seat 3, and a countersunk hole is provided at a position corresponding to the screw hole of the mounting seat 4;

[0044] It should be noted that the disassembly and assembly between the connecting seat 3 and the mounting seat 4 is convenient.

[0045] like Figure 2 , Figure 4 As shown, three slide grooves 6 are specifically provided, and the angle between two adjacent slide grooves 6 corresponding to the central axis of the threaded column 5 is 120°, and the axis lines of the output shaft of the motor 1, the connecting seat 3, the mounting seat 4 and the fastening plate 11 are all located on the same straight line;

[0046] It should be noted that it is possible to ensure that the propeller body 2 is clamped in the center, thereby avoiding the generation of eccentric force during the rotation of the propeller body 2.

[0047] like Figure 6 As shown, a hexagonal recess 15 is formed on the top of the fixing seat 13;

[0048] It should be noted that the hexagonal recessed hole 15 is provided to facilitate tightening the fixing seat 13 using a tool.

[0049] like Figure 4 , Figure 6 As shown, a mounting seat is integrally formed at the middle of the propeller body 2, and the inner diameter of the mounting seat is matched with the outer diameter of the threaded column 5;

[0050] It should be noted that the assembly between the propeller body 2 and the threaded column 5 is facilitated.

[0051] When in use: first fix the mounting seat 4 on the connecting seat 3, then install the clamping block 8 on the inner side of the slide groove 6, then install the propeller body 2 on the threaded column 5, and make the middle section of the propeller body 2 fit with the upper surface of the mounting seat 4, finally use the threaded hole 14 set at the bottom of the fixing seat 13 to screw with the threaded column 5 (the rotation and tightening direction of the fixing seat 13 is consistent with the rotation direction of the output shaft of the motor 1), and at the same time make the spiral hole groove 12 set on the surface of the fastening disk 11 contact with the guide column head 10, and as the fastening disk 11 rotates, the guide block 9 set on the side wall of the clamping block 8 cooperates with the guide groove 7 to slide until the clamping block 8 abuts against the middle section of the propeller body 2.

[0052] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A propeller fixing device, comprising a motor (1), a propeller body (2) drivingly connected to a power output end of the motor (1), and an anti-loosening component, characterized in that: A connecting seat (3) is installed at the power output end of the motor (1); The connecting seat (3) is detachably connected to a mounting seat (4), a threaded column (5) sleeved and connected to the propeller body (2) is fixedly connected to the middle of the upper surface of the mounting seat (4), a sliding groove (6) is provided on the edge of the surface of the mounting seat (4), and a guide groove (7) is symmetrically provided on the inner wall of the sliding groove (6); The inner side of the slide groove (6) is slidably connected to a clamping block (8) that abuts against the middle section of the propeller body (2); the outer wall of the clamping block (8) is integrally formed with a guide block (9) that is slidably connected to the guide groove (7); and a guide column head (10) is installed on the top of the clamping block (8); A fastening plate (11) is detachably connected to the upper side of the propeller body (2); a spiral hole groove (12) is provided on the surface of the fastening plate (11) and is slidably connected to the guide column head (10); a fixing seat (13) is integrally formed in the middle of the fastening plate (11); a threaded hole (14) is provided at the bottom of the fixing seat (13) and is threadedly connected to the threaded column (5).

2. A propeller fixing device according to claim 1, characterized in that: An anti-loosening component is installed between the propeller body (2) and the fastening plate (11); The anti-loosening assembly comprises an anti-loosening spring sheet (16) and a flat washer (17) which are sequentially sleeved on the threaded column (5).

3. A propeller fixing device according to claim 1, characterized in that: The surface of the connecting seat (3) is provided with a screw hole, and the mounting seat (4) is provided with a countersunk hole at a position corresponding to the screw hole.

4. A propeller fixing device according to claim 1, characterized in that: Specifically, three slide grooves (6) are provided, and the angle between two adjacent slide grooves (6) corresponding to the central axis of the threaded column (5) is 120°.

5. A propeller fixing device according to claim 1, characterized in that: A hexagonal recessed hole (15) is formed on the top of the fixing seat (13).

6. A propeller fixing device according to claim 1, characterized in that: The axis lines of the output shaft of the motor (1), the connecting seat (3), the mounting seat (4) and the fastening plate (11) are all located on the same straight line.

7. A propeller fixing device according to claim 1, characterized in that: An assembly seat is integrally formed at the middle of the propeller body (2), and the inner diameter of the assembly seat is matched to the outer diameter of the threaded column (5).

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