Intelligent deer repelling device with LED explosion flashing function

Abstract

The utility model discloses an intelligent deer repelling device with an LED explosion flashing function, and aims to provide the intelligent deer repelling device with the LED explosion flashing function, which can improve repelling efficiency and use comfort, is convenient to quickly and stably mount, and improves assembly efficiency between structures and later disassembly and maintenance convenience. One end of the light guide pipe is detachably connected with a cover plate assembly, an energy supply assembly and a switch assembly are connected in the cover plate assembly, the other end of the light guide pipe is detachably connected with an insertion pipe, the insertion pipe is connected with a threaded plug, a main circuit board is connected in the light guide pipe, and the main circuit board and the switch assembly are electrically connected with the energy supply assembly through the wires. The main circuit board is electrically connected with LED lamp beads. The beneficial effects of the utility model are that noiseless intelligent explosion flash expelling of the LED lamp is realized; the deer repeller is fast and stable to assemble; the structure is convenient to disassemble and maintain; a protection structure; the endurance and continuous work of the expelling device are ensured; the connection strength of the threaded plug and the insertion tube is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of deer repelling devices, in particular to an intelligent deer repelling device with an LED flashing function. Background Art

[0002] In order to prevent deer and other animals from entering the territory and causing damage outdoors or in the yard, it is necessary to drive away the deer through animal repellers. Animal repellers are usually composed of a main body, a top base, a top cover and solar panels. When in use, the solar panels generate current and voltage under light to charge the battery, thereby driving the built-in buzzer in the repeller body to emit sound waves and vibration waves, making the animals feel uncomfortable and stay away from the scene, thus achieving the purpose of driving away rats.

[0003] China Patent Authorization Announcement Number: CN 220223231 U, Authorization Announcement Date December 22, 2023, This utility model relates to a solar mouse repeller, including a mouse repeller body and a top seat, the bottom surface of the top seat is provided with an integrated socket, and the top of the mouse repeller body is inserted into the inner side of the socket, a connection structure is provided between the mouse repeller body and the socket, and the connection structure includes undercuts, grooves and ridges, and the top surface of the mouse repeller body is evenly provided with four integrated undercuts, and the inner wall of the socket is evenly provided with four grooves, and the bottom end of the groove is connected to the bottom surface of the socket, and the inner wall of the groove is provided with a ridge that is an integrated structure with the socket, and the undercut is at the top of the ridge. The shortcomings of this technical solution are: 1. In outdoor environments such as at night, the effect of sound repelling is not good, and it is easy to disturb people, which reduces the repelling effect and comfort of use; 2. The convenience and structural stability during installation are insufficient; 3. The assembly efficiency between the structures is low, which is not conducive to assembly and later disassembly.

[0004] In summary: the expeller has the shortcomings of inappropriate expulsion method and low efficiency, poor equipment installation stability and inconvenient assembly, disassembly and maintenance between structures. Utility Model Content

[0005] The utility model aims to overcome the shortcomings of the prior art deer repellents, such as inappropriate repelling methods and low effectiveness, poor equipment installation stability, and inconvenient assembly and disassembly maintenance between structures. The utility model provides an intelligent deer repellent with LED flashing function, which can improve the repelling effectiveness and the comfort of use, facilitate quick and stable installation of the equipment, improve the assembly efficiency between structures and the convenience of later disassembly and maintenance.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An intelligent deer repellent with an LED flashing function comprises a light guide tube and a wire. One end of the light guide tube is disassembled and connected to a cover plate assembly, an energy supply assembly and a switch assembly are connected inside the cover plate assembly, the other end of the light guide tube is disassembled and connected to a plug, the plug is connected to a threaded plug, a main circuit board is connected inside the light guide tube, the main circuit board and the switch assembly are electrically connected to the energy supply assembly through the wire, and the main circuit board is electrically connected to an LED lamp bead.

[0008] The light guide is made of visible material, so that the inside of the light guide can be seen from the outside, and then the main circuit board connected to the light guide and the LED lamp beads on the main circuit board can be directly transparent. Among them, one end of the light guide is connected to the cover assembly, and the power supply assembly provides power to the switch assembly and the main circuit board through the connection of the wire, so that the switch assembly controls the opening and closing of the power supply of the device, and the flash lamp beads on the main circuit board are controlled to flash to drive the deer away by flashing, so as to avoid disturbing the public by the sharp sound of the buzzer, so that the expulsion method is calm, comfortable and deterrent, that is, through the cooperation of the power supply assembly and the main circuit board, the deer repellent can achieve noiseless LED light intelligent flashing expulsion; the other end of the light guide is connected to the plug for supporting the upper end and connecting the lower end, and the end of the plug is connected to the threaded plug for inserting into the target soil. The threaded end can be inserted more easily and is not easy to be pulled out during rotation, thereby improving the installation stability; the various structures are connected by detachable connection to facilitate quick connection during assembly and later maintenance. The effect of achieving noise-free, high-efficiency LED light intelligent flashing to drive away deer is achieved, the deer repellent is quick and stable to assemble, and the structure is easy to disassemble and maintain.

[0009] Preferably, the cover assembly includes an upper cover and a lower cover, the inner side of the upper cover is connected with a plug-in column, the inner side of the lower cover is connected with a mounting column, the plug-in column is plugged into the mounting column, the outer side of the mounting column is plugged with a fixing screw, the fixing screw is threadedly connected to the plug-in column, one end of the light guide is provided with a fixing groove 1, the outer side of the lower cover is connected with a connecting tube, the connecting tube is plugged into the fixing groove 1. The cover assembly includes an upper cover and a lower cover, the inner side of the upper cover is connected with a plurality of plug-in columns, the inner side of the lower cover is connected with mounting columns corresponding to the positions and numbers of the plug-in columns, the plug-in columns are inserted into the mounting columns when the upper cover is connected to the lower cover, so as to locate the connection accuracy and stability between the two structures, and at the same time, the fixing screw is used to make the connection between the upper cover and the lower cover more stable; the light guide is inserted into the connecting tube of the lower cover through the fixing groove 1 to support the connection of the lower cover, and the connection method is quick and efficient. The effect of improving the efficiency of structural assembly and the convenience of later disassembly and maintenance is achieved.

[0010] Preferably, the energy supply component includes a solar panel, a battery pack and a battery holder, the switch component includes a switch circuit board, a positioning groove is provided on the outer side of the upper cover plate, the solar panel is embedded in the positioning groove, a receiving cavity is provided on the inner side of the lower cover plate, the mounting column is connected to the receiving cavity, the battery holder and the switch circuit board are connected to the receiving cavity, the battery pack is connected to the battery holder, the battery holder is connected to the switch circuit board through a wire, and the switch circuit board, the battery holder and the solar panel are all electrically connected to the main circuit board through a wire. The battery pack (battery holder) and the solar panel in the energy supply component supply power to the switch circuit board and the main circuit board through a wire, wherein the battery pack is fixed on the battery holder, the solar panel is installed in the end face positioning groove of the upper cover plate to collect solar energy and convert it into electrical energy, and the battery pack (battery holder) and the switch circuit board are installed in the receiving cavity of the lower cover plate to protect the power supply system. The effect of protecting the structure and ensuring that the deer repellent has enough energy to work continuously is achieved.

[0011] Preferably, the upper cover is provided with a limit plate, one end of which is connected to the inner side of the upper cover, and the end face of the other end of the limit plate is provided with a limit groove, which is in contact with the battery pack. The inner side of the upper cover is connected to a limit plate arranged opposite to the battery pack, and the shape of the end face of the limit plate opposite to the battery pack matches the structural shape of the battery pack - the limit groove is used to fix and press the battery pack to prevent the battery pack from detaching from the battery holder and causing power failure. This achieves the effect of improving the installation stability of the battery structure.

[0012] Preferably, the switch assembly includes a switch button and a switch waterproof cap, the lower cover is provided with a mounting hole, the switch circuit board is connected at the mounting hole, the switch waterproof cap is connected to the mounting hole, one end of the switch button is connected inside the switch waterproof cap, and the other end of the switch button is connected to the switch circuit board. The switch button in the switch assembly passes through the mounting hole and is connected to the switch circuit board in the lower cover body, so that power is turned off and on by pressing the switch button; the switch waterproof cap is connected to the mounting hole and wraps the switch button, and the switch waterproof cap is made of a colloid material to improve the sealing and adapt to the movement of the switch button. The effect of improving the sealing of the deer repellent and protecting the internal structure while facilitating the switch operation is achieved.

[0013] Preferably, a positioning seat is connected inside the light guide tube, the main circuit board is connected to the positioning seat, and an anti-skid groove is provided on the outside of the light guide tube. The positioning seat is connected inside the light guide tube to facilitate positioning and placement of the structure when installing the main circuit board; the light guide tube is provided with a plurality of anti-skid grooves so that the light guide tube is used as the center for easy operation during installation and removal. The effect of improving the convenience of structural installation and removal of the deer repellent is achieved.

[0014] Preferably, the other end of the light guide is provided with a second fixing groove, the groove surface of the second fixing groove is provided with a limiting groove, the ports of the insert are provided with inner chamfers, the light guide is plugged into one end of the insert, and the insert is plugged into the limiting groove. The end of the light guide is quickly inserted into the insert through the inner chamfer of the insert, thereby realizing the structural sleeve and the connection through friction as one, and then further inserted into the limiting groove of the light guide to make the connection tighter. The effect of ensuring the connection method of rapid structural assembly while improving the connection friction and stability between the structures is achieved.

[0015] Preferably, a limiting ring is connected to the inner side of the other end of the insert, one end of the threaded plug is set as a connecting part, the other end of the threaded plug is set as a pointed cone part, the pointed cone part is provided with a spirally arranged protruding thread, one end of the connecting part is connected to the pointed cone part, a guide groove is provided at the end of the other end of the connecting part, the connecting part is provided with a limiting groove, and the limiting ring is engaged with the limiting groove. The inner wall of the insert is connected to the limiting ring, the spiral thread structure in the threaded plug is connected to the surface of the pointed cone part for insertion and strong connection to the soil, and the connecting part of the threaded plug is quickly inserted into the insert through the inner chamfer and the guide groove until the limiting ring is engaged with the limiting groove. The effect of improving the connection efficiency of the threaded plug, locating the connection position, and improving the connection strength between the threaded plug and the insert is achieved.

[0016] The beneficial effects of the utility model are: realizing noise-free and high-efficiency LED light intelligent flashing deer repelling; quick and stable assembly of the deer repellent; easy disassembly and maintenance; protective structure; ensuring the endurance and continuous operation of the deer repellent; improving the installation stability of the battery structure; improving the sealing of the deer repellent; facilitating switch operation; rapid structural assembly; improving the connection efficiency and positioning connection position of the threaded plug; and improving the connection strength between the threaded plug and the insert. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 yes Figure 1 Exploded diagram of

[0019] Figure 3 It is an exploded view of the cover assembly and the energy supply assembly;

[0020] Figure 4 yes Figure 1 Section Figure 1 (partial);

[0021] Figure 5 yes Figure 1 Section Figure 2 (partial);

[0022] Figure 6 yes Figure 1 Section Figure 3 (partial).

[0023] In the figure: 1. light guide tube, 2. limiting groove, 3. insert tube, 4. threaded plug, 5. main circuit board, 6. LED lamp beads, 7. upper cover plate, 8. lower cover plate, 9. insert column, 10. mounting column, 11. fixing screw, 12. connecting pipe, 13. fixing groove 1, 14. solar panel, 15. battery pack, 16. battery holder, 17. switch circuit board, 18. positioning groove, 19. accommodating cavity, 20. limiting plate, 21. limiting groove, 22. switch button, 23. switch waterproof cap, 24. mounting hole, 25. positioning seat, 26. anti-slip groove, 27. fixing groove 2, 28. limiting groove, 29. limiting ring, 30. connecting part, 31. pointed cone part, 32. guide groove, 33. through hole 1, 34. through hole 2, 35. limiting groove, 36. sealing ring 1, 37. sealing ring 2. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless otherwise specified, the relative arrangement of the components, numerical expressions and numerical values ​​described in these embodiments do not limit the scope of the present application. For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" are used in the embodiments to illustrate the relationship between an element or feature shown in the figure and another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or located in other orientations), and the spatial relative description used here can be interpreted accordingly. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, process and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, process and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values.It should be noted that similar reference numerals and letters denote similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0027] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0028] Embodiment 1:

[0029] like Figure 1 , 2 As shown, an intelligent deer repellent with LED flashing function comprises a light guide tube 1 and a wire. One end of the light guide tube 1 is disassembled and connected to a cover assembly, and a power supply assembly and a switch assembly are connected inside the cover assembly. The other end of the light guide tube 1 is disassembled and connected to a plug 3, and the plug 3 is connected to a threaded plug 4. A main circuit board 5 is connected inside the light guide tube 1, and the main circuit board 5 and the switch assembly are electrically connected to the power supply assembly through wires, and the main circuit board 5 is electrically connected to an LED lamp bead 6.

[0030] like Figure 2 , 4As shown, the cover plate assembly includes an upper cover plate 7 and a lower cover plate 8. The inner side of the upper cover plate 7 is connected with a plug post 9, the inner side of the lower cover plate 8 is connected with a mounting post 10, the plug post 9 is plugged into the mounting post 10, the outer side of the mounting post 10 is plugged with a fixing screw 11, the fixing screw 11 is threadedly connected to the plug post 9, one end of the light guide 1 is provided with a fixing groove 13, the outer side of the lower cover plate 8 is connected with a connecting tube 12, the connecting tube 12 is plugged into the fixing groove 13.

[0031] like Figure 2-4 As shown, the energy supply component includes a solar panel 14, a battery pack 15 and a battery holder 16, the switch component includes a switch circuit board 17, a positioning groove 18 is provided on the outer side of the upper cover plate 7, the solar panel 14 is embedded in the positioning groove 18, and a receiving cavity 19 is provided on the inner side of the lower cover plate 8. The mounting column 10 is connected to the receiving cavity 19, the battery holder 16 and the switch circuit board 17 are connected to the receiving cavity 19, the battery pack 15 is connected to the battery holder 16, and the battery holder 16 is connected to the switch circuit board 17 through a wire. The switch circuit board 17, the battery holder 16 and the solar panel 14 are all electrically connected to the main circuit board 5 through a wire.

[0032] like Figure 5 As shown, the upper cover plate 7 is provided with a limiting plate 20 , one end of the limiting plate 20 is connected to the inner side of the upper cover plate 7 , and the end surface of the other end of the limiting plate 20 is provided with a limiting groove 21 , and the limiting groove 21 is in contact with the battery pack 15 .

[0033] like Figure 2-4 As shown, the switch assembly includes a switch button 22 and a switch waterproof cap 23. The lower cover plate 8 is provided with a mounting hole 24. The switch circuit board 17 is connected at the mounting hole 24. The switch waterproof cap 23 is connected to the mounting hole 24. One end of the switch button 22 is connected inside the switch waterproof cap 23, and the other end of the switch button 22 is connected to the switch circuit board 17.

[0034] like Figure 2 , 4 As shown, a positioning seat 25 is connected inside the light guide tube 1 , the main circuit board 5 is connected to the positioning seat 25 , and an anti-slip groove 26 is provided on the outer side of the light guide tube 1 .

[0035] like Figure 4 , 5 As shown, the other end of the light guide 1 is provided with a fixing groove 27, the groove surface of the fixing groove 27 is provided with a limiting groove 28, the ports of the insert tube 3 are provided with inner chamfers, the light guide 1 is plugged into one end of the insert tube 3, and the insert tube 3 is plugged into the limiting groove 28.

[0036] like Figure 2 , 6As shown, the inner side of the other end of the insert tube 3 is connected with a limiting ring 29, one end of the threaded plug 4 is set as a connecting portion 30, the other end of the threaded plug 4 is set as a pointed cone portion 31, the pointed cone portion 31 is provided with a spirally arranged protruding thread, one end of the connecting portion 30 is connected to the pointed cone portion 31, and a guide groove 32 is provided at the end of the other end of the connecting portion 30, the connecting portion 30 is provided with a limiting groove 2, and the limiting ring 29 is clamped with the limiting groove 2.

[0037] like Figure 1-6 As shown: the insert tube 3 is a straight rod tubular structure, and both ends of the tube mouth are chamfered on the inside to facilitate quick guided installation.

[0038] The switch circuit board 17 and the switch button 22 adopt a button self-locking switch control structure. The switch circuit board 17 includes an automatic light sensing structure to start the automatic light sensing to achieve bright stop and dark start, and realize the pressing cycle function through the ON / OFF (start / off) mark on the surface of the lower cover plate 8. The cooperation between the switch circuit board 17 and the main circuit board 5 makes the LED lamp beads (using the LED blue flashing light structure) work for 3 seconds, with an interval of 30 seconds, to achieve a flashing effect to make the passing deer feel panic and flee.

[0039] The positioning groove 18 is provided with a through hole 1 33, and the accommodating cavity is provided with a through hole 2 34. The through hole 1 33 and the through hole 2 34 are used for connecting wires (not shown in the figure), so that the switch circuit board 17 and the main circuit board 5 can be electrically connected to the power supply component through the insertion of wires.

[0040] The upper cover plate 7 is provided with a limiting groove 35, and a sealing ring 1 36 is embedded in the limiting groove 35. The lower cover plate 8 is closely attached to the sealing ring 1 to prevent liquid from penetrating from the connection between the upper cover plate 7 and the lower cover plate 8. The solar panel 14 is sleeved with a sealing ring 2 37, and the sealing ring 2 37 is embedded in the positioning groove 18 to further improve the sealing performance and prevent liquid from entering the accommodating cavity 34 from the through hole 1 33. After the two ends of the light guide 1 are connected, the sealing is achieved by applying glue at the connection. Similarly, after the threaded plug 4 is installed on the connection part 12, the glue treatment is carried out to further seal.

[0041] When in use: select the target soil, hold the deer repellent and insert it into the soil through the threaded plug 4 while rotating, the thread of the pointed cone 31 is screwed into the soil and part of the insert tube 3 is brought into the soil, so that the deer repellent is vertically inserted into the soil, and the installation of the deer repellent is completed. By pressing the switch button 22 (contacting the switch waterproof cap 23), the circuit is connected and opened, and the automatic light sensing is started to realize bright stop and dark start. The cooperation of the switch circuit board 17 and the main circuit board 5 makes the LED lamp beads work for 3 seconds, with an interval of 30 seconds, to produce a flashing effect to make the passing deer feel panic and flee to realize electronic intelligent repelling.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent deer repellent with LED flashing function, characterized in that: The invention comprises a light guide tube (1) and a wire, wherein one end of the light guide tube (1) is detachably connected to a cover plate assembly, wherein an energy supply assembly and a switch assembly are connected inside the cover plate assembly, and the other end of the light guide tube (1) is detachably connected to an insert tube (3), wherein the insert tube (3) is connected to a threaded plug (4), wherein a main circuit board (5) is connected inside the light guide tube (1), wherein the main circuit board (5) and the switch assembly are both electrically connected to the energy supply assembly via the wire, and wherein the main circuit board (5) is electrically connected to an LED lamp bead (6).

2. The intelligent deer repellent with LED flashing function according to claim 1, characterized in that: The cover plate assembly comprises an upper cover plate (7) and a lower cover plate (8); the inner side of the upper cover plate (7) is connected to an insertion column (9); the inner side of the lower cover plate (8) is connected to a mounting column (10); the insertion column (9) is plugged into the mounting column (10); the outer side of the mounting column (10) is plugged into a fixing screw (11); the fixing screw (11) is threadedly connected to the insertion column (9); one end of the light guide tube (1) is provided with a fixing groove (13); the outer side of the lower cover plate (8) is connected to a connecting tube (12); the connecting tube (12) is plugged into the fixing groove (13).

3. The intelligent deer repellent with LED flashing function according to claim 2, characterized in that: The energy supply component comprises a solar panel (14), a battery pack (15) and a battery holder (16); the switch component comprises a switch circuit board (17); a positioning groove (18) is provided on the outer side of the upper cover plate (7); the solar panel (14) is embedded in the positioning groove (18); a receiving cavity (19) is provided on the inner side of the lower cover plate (8); the mounting column (10) is connected to the receiving cavity (19); the battery holder (16) and the switch circuit board (17) are connected to the receiving cavity (19); the battery pack (15) is connected to the battery holder (16); the battery holder (16) is connected to the switch circuit board (17) via a wire; the switch circuit board (17), the battery holder (16) and the solar panel (14) are all electrically connected to the main circuit board (5) via a wire.

4. The intelligent deer repellent with LED flashing function according to claim 3, characterized in that: The upper cover plate (7) is provided with a limiting plate (20), one end of the limiting plate (20) is connected to the inner side of the upper cover plate (7), and the end surface of the other end of the limiting plate (20) is provided with a limiting groove (21), and the limiting groove (21) is in contact with the battery pack (15).

5. The intelligent deer repellent with LED flashing function according to claim 3, characterized in that: The switch assembly comprises a switch button (22) and a switch waterproof cap (23); the lower cover plate (8) is provided with a mounting hole (24); the switch circuit board (17) is connected to the mounting hole (24); the switch waterproof cap (23) is connected to the mounting hole (24); one end of the switch button (22) is connected to the switch waterproof cap (23); and the other end of the switch button (22) is connected to the switch circuit board (17).

6. The intelligent deer repellent with LED flashing function according to claim 2, characterized in that: A positioning seat (25) is connected inside the light guide tube (1), the main circuit board (5) is connected to the positioning seat (25), and an anti-slip groove (26) is provided on the outside of the light guide tube (1).

7. The intelligent deer repellent with LED flashing function according to claim 6, characterized in that: The other end of the light guide tube (1) is provided with a second fixing groove (27), the groove surface of the second fixing groove (27) is provided with a limiting groove (28), the ports of the insert tube (3) are provided with inner chamfers, the light guide tube (1) is plugged into one end of the insert tube (3), and the insert tube (3) is plugged into the limiting groove (28).

8. The intelligent deer repellent with LED flashing function according to claim 7, characterized in that: The inner side of the other end of the insertion tube (3) is connected to a limiting ring (29); one end of the threaded plug (4) is provided as a connecting portion (30); the other end of the threaded plug (4) is provided as a pointed cone portion (31); the pointed cone portion (31) is provided with a spirally arranged protruding thread; one end of the connecting portion (30) is connected to the pointed cone portion (31); a guide groove (32) is provided at the end of the other end of the connecting portion (30); the connecting portion (30) is provided with a limiting groove (2); and the limiting ring (29) is clamped with the limiting groove (2).

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