Hose plug with automatic locking function
By designing a throat plug with an automatic locking function, and utilizing a limit block and locking pin structure, the problem of traditional throat plugs requiring tools to lock and being prone to falling off is solved, achieving a fast and stable connection effect.
Patent Information
- Application Number
- CN202520107790.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Traditional throat plugs require additional tools to tighten and are prone to falling off in vibrating environments, resulting in unstable connections.
A throat plug with an automatic locking function was designed. Through a structure consisting of a limit block, screw, guide rod, mounting base, shaft pin, and locking pin, the extension of the locking pin is adjusted by rotating the screw to increase the contact area with the connecting mechanism and achieve rapid fixation.
It enables quick locking without additional tools, improves connection stability, prevents screws from falling off, and is suitable for vibration environments.
Smart Images

Figure CN223594664U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of throat plug technology, specifically a throat plug with an automatic locking function. Background Technology
[0002] A throat plug is a tool that uses the physical and mathematical principles of the inclined plane, circular rotation, and friction of an object to gradually tighten the parts of an object or machine.
[0003] Traditional hose plugs require specialized tools for tightening to ensure a secure connection between the plug and the workpiece. However, this tightening process is time-consuming and labor-intensive, and prone to instability. As a fixed connector, hose plugs without a locking function are easily detached in machines with high vibration, rendering them useless and causing loosening or detachment of the connection between the plug and the workpiece, making them inconvenient to use. Therefore, we propose a hose plug with an automatic locking function. Utility Model Content
[0004] The purpose of this invention is to provide a throat plug with an automatic locking function to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a throat plug with an automatic locking function, comprising a throat plug body, a throat plug head provided at the top of the throat plug body, a limiting block provided in a groove at the top of the throat plug head, and a screw threaded onto the limiting block, a guide rod rotatably connected to the bottom of the screw rod, a mounting seat provided at the bottom of the guide rod, and a locking pin hinged to the side of the mounting seat via a pivot pin, the locking pin being movably installed in a groove on the side of the throat plug body.
[0006] In the above scheme, the bottom of the throat plug body is provided with a sharp end.
[0007] In the above scheme, the throat plug body, the pointed end, and the throat plug head are an integrated structure.
[0008] In the above scheme, a sealing block is provided on the groove, a locking block is provided on the side of the sealing block to engage with the throat plug head, and a positioning groove is provided in the middle of the sealing block.
[0009] In the above solution, a spring is provided below the mounting base.
[0010] In the above scheme, the number of locking pins is three.
[0011] In the above scheme, a knob is provided at the top of the screw.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This type of throat plug with automatic locking function has a simple and reasonable structural design and strong practicality. By setting an integrated throat plug body, sharp end, and throat plug head, the structural strength is guaranteed, allowing the device to be quickly fixed in a suitable position to form a connection. By setting a structure such as a limiting block, screw, guide rod, mounting base, shaft pin, locking pin, and spring for cooperative use, the height of the mounting base can be adjusted by rotating the screw, thereby squeezing the locking pin so that the locking pin extends outward from the inside of the throat plug body. The cooperation of multiple locking pins increases the contact area between the throat plug body and the connecting mechanism, effectively improving the connection stability of the device and preventing the screw from falling off. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] Figure 2 This is a schematic diagram of the throat plug head structure of this utility model.
[0015] Figure 3 This is a schematic diagram of the mounting base connection structure of this utility model.
[0016] In the figure: 1 throat plug body, 11 sharp end, 12 throat plug head, 13 encapsulation block, 14 locking block, 15 positioning groove, 16 limiting block, 17 screw, 18 guide rod, 19 mounting base, 2 shaft pin, 21 locking pin, 22 slide groove, 23 spring. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Please see Figure 1-3 This utility model provides a technical solution: a throat plug with an automatic locking function, including a throat plug body 1, a throat plug head 12 is provided on the top of the throat plug body 1, a limiting block 16 is provided in the groove at the top of the throat plug head 12, and a screw 17 is screwed onto the limiting block 16. A guide rod 18 is rotatably connected to the bottom of the screw 17, and a mounting seat 19 is provided at the bottom of the guide rod 18. A locking pin 21 is hinged to the side of the mounting seat 19 through a shaft pin 2. The locking pin 21 is movably installed in a sliding groove 22 on the side of the throat plug body 1.
[0019] By setting up a structure including a limiting block 16, a screw 17, a guide rod 18, a mounting base 19, a shaft pin 2, a locking pin 21, and a spring 23, the height of the mounting base 19 can be adjusted by rotating the screw 17. This allows the locking pin 21 to be squeezed and protrude outward from the inside of the throat plug body 1. The cooperation of multiple locking pins 21 increases the contact area between the throat plug body 1 and the connecting mechanism, effectively improving the connection stability of the equipment and preventing the screws from falling off.
[0020] In the above solution, the bottom of the throat plug body 1 is provided with a sharp end 11. Specifically, the design of the sharp end 11 makes it easier to connect the throat plug body 1 to the device.
[0021] In the above solution, the throat plug body 1, the pointed end 11, and the throat plug head 12 are an integrated structure. By setting the throat plug body 1, pointed end 11, and throat plug head 12 as an integrated molding, the structural strength is ensured, allowing the device to be quickly fixed in a suitable position to form a connection effect, thus ensuring the connection effect of the equipment.
[0022] In the above scheme, a sealing block 13 is provided on the groove, a locking block 14 is provided on the side of the sealing block 13 to engage with the throat plug head 12, and a positioning groove 15 is provided in the middle of the sealing block 13.
[0023] In the above scheme, a spring 23 is provided below the mounting base 19. The mounting base 19 is supported by the spring 23. When the screw 17 is rotated, the guide rod 18 drives the mounting base 19 to move downward, thereby compressing the spring 23.
[0024] In the above scheme, the number of locking pins 21 is three. Furthermore, in order to increase the fixing effect, the number of locking pins 21 can be increased accordingly, and a matching number of grooves can be opened on the side of the throat plug body 1 for cooperation.
[0025] In the above scheme, a knob is provided at the top of the screw 17. After the user removes the encapsulation block 13, he / she manually rotates the knob to drive the screw 17 to rotate. The screw 17 and the limiting block 16 generate relative displacement, thereby driving the guide rod 18 to move down. This causes the mounting base 19 to move down and squeeze the locking pin 21, so that the movable end of the locking pin 21 extends out of the throat plug body 1 through the slide groove 22. This allows the tip of the locking pin 21 to enter the connecting mechanism laterally from the side, effectively increasing the fixing effect of the device.
[0026] Working principle:
[0027] In practical use, this type of throat plug with automatic locking function can first be fixed to the corresponding connection position with a screwdriver. Then, the encapsulation block 13 is removed, and the knob is manually rotated to drive the screw 17 to rotate. The screw 17 and the limit block 16 generate relative displacement, thereby driving the guide rod 18 to move down. This causes the mounting base 19 to move down and squeeze the locking pin 21, so that the movable end of the locking pin 21 extends out of the throat plug body 1 through the slide groove 22. This allows the tip of the locking pin 21 to enter the connection mechanism laterally from the side, effectively increasing the fixing effect of the device. Afterwards, the encapsulation block 13 can be reset to form a protective mechanism. With the cooperation of the above mechanisms, a rapid locking effect is achieved, which greatly improves the connection stability.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A throat plug with an automatic locking function, comprising a throat plug body (1), characterized in that: The top of the throat plug body (1) is provided with a throat plug head (12). A limiting block (16) is provided in the groove at the top of the throat plug head (12), and a screw (17) is screwed onto the limiting block (16). A guide rod (18) is rotatably connected to the bottom of the screw (17). A mounting seat (19) is provided at the bottom of the guide rod (18). A locking pin (21) is hinged to the side of the mounting seat (19) through a shaft pin (2). The locking pin (21) is movably installed in the sliding groove (22) on the side of the throat plug body (1).
2. A throat plug with an automatic locking function according to claim 1, characterized in that: The bottom of the throat plug body (1) is provided with a sharp end (11).
3. A throat plug with an automatic locking function according to claim 1, characterized in that: The throat plug body (1), the pointed end (11), and the throat plug head (12) are an integrated structure.
4. A throat plug with an automatic locking function according to claim 1, characterized in that: A sealing block (13) is provided on the groove, and a locking block (14) is provided on the side of the sealing block (13) to engage with the throat plug head (12). A positioning groove (15) is provided in the middle of the sealing block (13).
5. A throat plug with an automatic locking function according to claim 1, characterized in that: A spring (23) is provided below the mounting base (19).
6. A throat plug with an automatic locking function according to claim 1, characterized in that: The number of locking pins (21) is three.
7. A throat plug with an automatic locking function according to claim 1, characterized in that: A knob is provided at the top of the screw (17).