Quick connector

Abstract

The utility model relates to the technical field of quick connectors and discloses a quick connector which comprises a first connecting block, a connecting plug is fixedly connected to the top of the first connecting block, a fixing pipe is fixedly connected to the right side of the first connecting block, and a locking device is rotationally connected to the left side of the outer wall of the fixing pipe. Fixing blocks are fixedly connected to the upper end and the lower end of the left side of the locking device correspondingly, threaded grooves are formed in the adjacent sides of the two fixing blocks correspondingly, a connecting pipe is arranged on the right side of the outer wall of the fixing pipe, and second connecting blocks are fixedly connected to the upper side and the lower side of the left end of the connecting pipe correspondingly; and the right sides of the outer walls of the two second connecting blocks are clamped with the left side of the inner wall of the locking device. According to the utility model, the position of the connecting pipe is quickly determined through the clamping and positioning of the connecting block II and the locking device, the repeated adjustment is avoided, the mounting efficiency is improved, the handle is rotated to drive the locking device to rotate, and the connecting pipe can be tightly connected to the fixed pipe through the matching of the threaded groove and the threaded block.

Description

Technical Field

[0001] This utility model relates to the field of quick coupling technology, and in particular to a quick coupling. Background Technology

[0002] Quick couplings are devices used to connect and disconnect fluid or gas transmission systems. They enable quick and convenient connection and disconnection without the need for tools and are applicable to various industrial fields and related scenarios in daily life.

[0003] A search revealed Chinese Patent Publication No. CN219198482U, which discloses a quick connector. The quick connector includes a hollow connector body with both ends connected. The connector body includes a connecting portion and a rotating portion rotatably connected to one end of the connecting portion. The end of the connecting portion facing the rotating portion mates with the rotating portion to form a first interface for connecting a cooling water conduit. The inner wall of the rotating portion has a limiting groove for inserting an adapter. This application facilitates changing the orientation of the cooling water conduit connected to the quick connector according to actual needs. However, relying solely on the limiting groove on the inner wall of the rotating portion for inserting the adapter requires aligning the limiting groove and inserting the adapter during connection. It lacks a snap-fit ​​and magnetic quick-locking structure. When frequent connection of the cooling water conduit is required, the user needs to spend considerable time and effort on alignment and insertion operations. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a quick connector, which aims to improve the problem that in the prior art, the fitting is inserted by relying solely on the limiting groove on the inner wall of the rotating part. When it is necessary to frequently connect cooling water pipes, users need to spend a lot of time and effort on alignment and insertion operations.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a quick connector, comprising a connecting block one, a plug connector fixedly connected to the top of the connecting block one, a fixing tube fixedly connected to the right side of the connecting block one, a locking device rotatably connected to the left side of the outer wall of the fixing tube, fixing blocks fixedly connected to the upper and lower ends of the left side of the locking device, threaded grooves provided on adjacent sides of the two fixing blocks, a connecting tube provided on the right side of the outer wall of the fixing tube, connecting blocks two fixedly connected to the upper and lower sides of the left end of the connecting tube, the right sides of the outer walls of the two connecting blocks two engaging with the left side of the inner wall of the locking device, a screw block fixedly connected to the left side of the outer wall of the connecting tube, the outer wall of the screw block threadedly connected to the inner walls of the two threaded grooves, and a sealing mechanism provided on the inner wall of the connecting tube.

[0006] The above technical solution involves a quick connector with a plug at the top for insertion, a fixed tube on the right side serving as the basic connection component, and a locking device on the left side of the outer wall of the fixed tube for locking. The threaded groove on the fixed block on the left side of the locking device engages with the structure on the connecting tube, and the connecting block at the left end of the connecting tube engages with the inner wall of the locking device for initial positioning. Simultaneously, the screw block on the left side of the outer wall of the connecting tube is threadedly connected to the threaded groove on the fixed block. When the locking device is rotated, the screw block rotates and moves within the threaded groove, ensuring a tight connection between the connecting tube and the fixed tube, thus realizing the connection function of the quick connector.

[0007] As a further description of the above technical solution:

[0008] The sealing mechanism includes a sealing barrel, the outer wall of which is fixedly connected to the middle of the inner wall of the connecting pipe. A filter plate is fixedly connected to the right side of the inner wall of the sealing barrel. A sealing groove is formed on the left side of the outer wall of the sealing barrel. A slot is formed at the end of the outer wall of the connecting pipe. A sealing ring is fixedly connected to the inner wall of the slot. The outer wall of the sealing ring engages with the inner wall of the sealing groove.

[0009] The above technical solution involves fixing the sealing barrel in the middle of the inner wall of the connecting pipe. The filter plate on the right side of its inner wall filters the passing medium, preventing impurities from affecting the connection and sealing effect. The sealing groove on the left side of the outer wall of the sealing barrel cooperates with the sealing ring fixed in the groove on the outer wall of the connecting pipe. When all components are connected in place, the sealing ring is inserted into the sealing groove to form a sealing structure, preventing the medium from leaking from the connection point, thereby ensuring the sealing performance of the entire quick connector connection.

[0010] As a further description of the above technical solution:

[0011] A connecting groove is provided on the right side of the outer wall of the connecting pipe, and a reflective sticker is provided on the inner wall of the connecting groove.

[0012] Through the above technical solution, reflective stickers can help staff quickly locate the connecting tube in dimly lit environments or when it is necessary to quickly locate the position of the connecting tube, avoiding operational errors or safety hazards due to lack of visibility, and improving safety and convenience during use.

[0013] As a further description of the above technical solution:

[0014] The two fixing blocks each have an installation groove on their upper and lower outer walls, and each of the two installation grooves has an indicator arrow fixedly connected to its inner wall.

[0015] Through the above technical solution, when connecting or disconnecting quick connectors, the indicator arrows can indicate the correct installation direction and the rotation direction of the locking device, helping users to complete the operation quickly and accurately, reducing the risk of loose connections or damage due to improper operation, and improving operating efficiency and the reliability of connector use.

[0016] As a further description of the above technical solution:

[0017] The top of the locking device has a second mounting groove, and a handle is fixedly connected to the inner wall of the second mounting groove.

[0018] With the above technical solution, when operating the quick connector, the user can easily rotate the locking device by holding the handle to achieve a tight connection or separation between the connecting tube and the fixed tube. Compared with the case without a handle, it greatly reduces the difficulty of operation, improves the convenience and efficiency of operation, and makes the use of quick connectors easier and more convenient.

[0019] As a further description of the above technical solution:

[0020] A second connecting groove is provided on the front side of the outer wall of the first connecting block, and a warning sign is fixedly connected to the inner wall of the second connecting groove.

[0021] Through the above technical solution, the warning sign can be marked with safety precautions, operational taboos and potential risks during the use of quick connectors, so that users can clearly understand the relevant warning information before operation, thereby standardizing their operation.

[0022] As a further description of the above technical solution:

[0023] The bottom of the connecting block 1 is provided with an installation groove 3, and a flexible plate 1 is fixedly connected to the inner wall of the installation groove 3.

[0024] Through the above technical solution, the flexible plate can act as a buffer when the quick connector is placed, reducing hard collisions with the placement surface and preventing bottom wear. When the quick connector is subjected to external impact, the flexible plate can absorb part of the impact force, protecting the internal structure from damage.

[0025] As a further description of the above technical solution:

[0026] A fixing plate is fixedly connected to the left side of the outer wall of the connecting block one, and the outer wall of the fixing plate is designed with a smooth shape.

[0027] Through the above technical solution, the smoothly designed fixing plate can avoid sharp edges and corners from scratching operators, prevent accidental injuries during operation or handling, and at the same time reduce friction and wear when in contact with other objects, reducing the risk of component damage caused by sharp edges and corners.

[0028] As a further description of the above technical solution:

[0029] A connecting groove three is provided on the left side of the outer wall of the fixed plate, and a flexible plate two is fixedly connected to the inner wall of the connecting groove three.

[0030] Through the above technical solution, the flexible plate can play a role in buffering and shock absorption when the fixed plate comes into contact with other components or objects, so as to avoid damage to the fixed plate or the objects in contact with it due to hard collisions.

[0031] As a further description of the above technical solution:

[0032] A second sealing groove is provided on the middle right side of the outer wall of the locking device. A second sealing ring is fixedly connected to the inner wall of the second sealing groove. The outer wall of the second sealing ring engages with the left end of the outer wall of the connecting pipe.

[0033] Through the above technical solution: when the connecting pipe is assembled with the locking device, the sealing ring two is tightly engaged with the left end of the outer wall of the connecting pipe, filling the gap between the two and effectively preventing fluid medium from leaking from the connection between the locking device and the connecting pipe.

[0034] This utility model has the following beneficial effects:

[0035] 1. In this utility model, the position of the connecting pipe can be quickly determined by the engagement and positioning of the connecting block two and the locking device, avoiding repeated adjustments and improving installation efficiency. Turning the handle drives the locking device to rotate, and by utilizing the cooperation of the threaded groove and the screw block, the connecting pipe can be tightly connected to the fixed pipe without complicated tools and cumbersome steps, thereby enabling rapid installation.

[0036] 2. In this utility model, the filter plate can effectively intercept impurities and particles in the fluid, preventing them from entering subsequent pipelines or equipment and preventing equipment failures caused by impurities clogging and wear. On the other hand, the sealing ring and the sealing groove fit tightly together, filling the gaps with elastic deformation to form a reliable sealing barrier, preventing fluid leakage and ensuring the safety and stability of the transmission process. Attached Figure Description

[0037] Figure 1 This is a perspective view of a quick connector proposed in this utility model;

[0038] Figure 2 This is a front view of a quick connector proposed in this utility model;

[0039] Figure 3 This is a schematic diagram of the screw block structure of a quick connector proposed in this utility model;

[0040] Figure 4 This is a schematic diagram of the structure of a flexible circuit board 2 for a quick connector proposed in this utility model;

[0041] Figure 5 This is a cross-sectional view of the sealing mechanism of a quick connector proposed in this utility model.

[0042] Legend:

[0043] 1. Connecting block one; 2. Sealing mechanism; 201. Sealing barrel; 202. Filter plate; 203. Sealing groove one; 204. Slot; 205. Sealing ring one; 3. Connector; 4. Fixing pipe; 5. Locking device; 6. Fixing block; 7. Threaded groove; 8. Connecting pipe; 9. Connecting block two; 10. Screw block; 11. Connecting groove one; 12. Reflective sticker; 13. Mounting groove one; 14. Indicator arrow; 15. Mounting groove two; 16. Handle; 17. Connecting groove two; 18. Warning sign; 19. Mounting groove three; 20. Flexible plate one; 21. Fixing plate; 22. Connecting groove three; 23. Flexible plate two; 24. Sealing groove two; 25. Sealing ring two. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0045] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a quick connector, including a connecting block 1. A plug connector 3 is fixedly connected to the top of the connecting block 1. A fixing tube 4 is fixedly connected to the right side of the connecting block 1. The fixing tube 4 is connected to the connecting block 1 and is an important component of the quick connector's connection structure, providing a foundation for the subsequent installation and fixing of the connecting tube 8. A locking device 5 is rotatably connected to the left side of the outer wall of the fixing tube 4. The locking device 5 can rotate around the left side of the outer wall of the fixing tube 4. Its rotation function is key to achieving a tight connection and separation between the connecting tube 8 and the fixing tube 4. The connection state is controlled by the rotation operation. Fixing blocks 6 are fixedly connected to the upper and lower ends of the left side of the locking device 5, respectively. Threaded grooves 7 are opened on adjacent sides of the two fixing blocks 6. The threaded grooves 7 on the fixing blocks 6 cooperate with the threaded blocks 10 on the connecting tube 8. When the locking device 5 rotates... The threaded connection between the threaded groove 7 and the screw block 10 allows the connecting pipe 8 to move closer to or further away from the fixed pipe 4, thereby achieving a tight connection or disassembly. The connecting pipe 8 is provided on the right side of the outer wall of the fixed pipe 4. The connecting pipe 8 is used to connect with other pipes or equipment and is an important channel for the quick connector to realize functions such as fluid transmission. The upper and lower sides of the left end of the connecting pipe 8 are fixedly connected to the connecting block 2 9. The right side of the outer wall of the two connecting blocks 2 9 is engaged with the left side of the inner wall of the locking device 5. The screw block 10 is fixedly connected to the left side of the outer wall of the connecting pipe 8. The outer wall of the screw block 10 is threadedly connected to the inner wall of the two threaded grooves 7. The screw block 10 and the threaded groove 7 are threadedly engaged. When the locking device 5 is rotated, the screw block 10 rotates and moves in the threaded groove 7, so that the connecting pipe 8 and the fixed pipe 4 are tightly connected, ensuring the firmness and sealing of the connection. The inner wall of the connecting pipe 8 is provided with a sealing mechanism 2.

[0046] Specifically, connecting block 1 is the basic component, with a plug 3 fixed to its top for initial connection with external equipment. The fixed pipe 4, fixedly connected to the right side of connecting block 1, provides basic support for the overall connection. The locking device 5 is rotatably connected to the left side of its outer wall. The device can achieve the connection and separation of connecting pipe 8 by rotation. The fixed blocks 6 at the upper and lower ends of the left side of the locking device 5 have threaded grooves 7, which cooperate with the screw block 10 on the left side of the outer wall of connecting pipe 8. When the locking device 5 is rotated, the threaded groove 7 and the screw block 10 interact, bringing the connecting pipe 8 close to the fixed pipe 4 and tightly connected. The connecting pipe 8 is used to connect other pipes or equipment and is an important channel for fluid transmission. The connecting blocks 2 9 on the upper and lower sides of its left end first engage with the inner wall of the locking device 5 to achieve initial positioning, which facilitates the accurate connection of the screw block 10 and the threaded groove 7, thereby ensuring the firmness and sealing of the entire quick connector connection and achieving efficient and stable use.

[0047] Reference Figure 2 , Figure 3 and Figure 5The sealing mechanism 2 includes a sealing barrel 201. The outer wall of the sealing barrel 201 is fixedly connected to the middle of the inner wall of the connecting pipe 8. As the main component of the sealing mechanism 2, the sealing barrel 201, fixed in the middle of the inner wall of the connecting pipe 8, provides a supporting structure for subsequent filtration and sealing functions, ensuring its stable position within the connecting pipe 8. A filter plate 202 is fixedly connected to the right side of the inner wall of the sealing barrel 201. The filter plate 202 is installed on the right side of the inner wall of the sealing barrel 201. When fluid passes through the connecting pipe 8, the filter plate 202 filters impurities and particles in the fluid. A sealing groove 203 is provided on the left side of the outer wall of the sealing barrel 201, providing an installation position for the sealing ring 205 to be installed later. This allows the sealing ring 205 to be accurately positioned and cooperate with other components to achieve a sealing function. The outer wall end of the connecting pipe 8 is provided with a groove 204, and the inner wall of the groove 204 is fixedly connected to the sealing ring 205. The groove 204 is used to fix the sealing ring 205 and prevent it from shifting during use. The sealing ring 205 is elastic and can fill the gap between components to play a sealing role. The outer wall of the sealing ring 205 engages with the inner wall of the sealing groove 203. When the sealing ring 205 engages with the sealing groove 203, a sealed space can be formed to prevent fluid from leaking from the connection between the sealing barrel 201 and the connecting pipe 8, thereby ensuring the sealing performance of the entire quick connector.

[0048] Specifically, the sealing barrel 201 is fixed in the middle of the inner wall of the connecting pipe 8, providing a stable support structure for the entire sealing mechanism 2. The filter plate 202 on the right side of the inner wall of the sealing barrel 201 can filter impurities and particles in the fluid when it passes through the connecting pipe 8, ensuring the quality of fluid transmission and protecting the connected equipment. The sealing groove 203 on the left side of the outer wall of the sealing barrel 201 cooperates with the sealing ring 205 fixed in the slot 204 at the end of the outer wall of the connecting pipe 8. The slot 204 ensures that the sealing ring 205 will not shift during use. The elastic sealing ring 205, after engaging with the sealing groove 203, can fill the gap between the components to form a sealed space, effectively preventing fluid leakage from the connection between the sealing barrel 201 and the connecting pipe 8. In this way, the sealing mechanism 2 improves the stability and reliability of the quick connector through the dual functions of filtration and sealing, ensuring the high efficiency and safety of fluid transmission.

[0049] Reference Figure 1 , Figure 2 and Figure 3A connecting groove 11 is provided on the right side of the outer wall of the connecting pipe 8. A reflective sticker 12 is provided on the inner wall of the connecting groove 11. The connecting groove 11 provides an installation position for the reflective sticker 12. The reflective sticker 12 utilizes the reflective material properties to reflect light under illumination, making the connecting pipe 8 easily identifiable even in dim environments. Mounting grooves 13 are provided on the upper and lower sides of the outer walls of the two fixing blocks 6. Indicator arrows 14 are fixedly connected to the inner walls of both mounting grooves 13. The indicator arrows 14 provide intuitive visual guidance for the operator. Operating instructions: The top of the locking device 5 is provided with a second mounting groove 15, and a handle 16 is fixedly connected to the inner wall of the second mounting groove 15. The second mounting groove 15 is used to fix the handle 16. The handle 16 provides a force point for the operator. By holding the handle 16, the locking device 5 can be rotated more easily and effortlessly to connect or separate the connecting pipe 8 from the fixed pipe 4; The front side of the outer wall of the first connecting block 1 is provided with a second connecting groove 17, and a warning sign 18 is fixedly connected to the inner wall of the second connecting groove 17. The warning sign 18 is marked with safety precautions for the use of the quick connector;

[0050] Specifically, a reflective sticker 12 is installed in the connecting groove 11 on the right side of the outer wall of the connecting pipe 8. The reflective properties enable a conspicuous warning and location in dim environments. The mounting grooves 13 on the upper and lower sides of the outer walls of the two fixing blocks 6 fix the indicator arrows 14, providing directional guidance for the operation of the quick connector and reducing errors. The mounting groove 15 on the top of the locking device 5 fixes the handle 16, making it easy for the operator to apply force to rotate the locking device 5 to complete the connection and disconnection operations. The connecting groove 17 on the front side of the outer wall of the connecting block 1 fixes the warning sign 18. The safety information marked on it can standardize the operation behavior. The reflective sticker 12 ensures environmental safety, the indicator arrows 14 and the handle 16 optimize the operation process, and the warning sign 18 avoids operation risks. Together, they ensure the efficiency, safety and reliability of the quick connector during use.

[0051] Reference Figure 1 , Figure 2 and Figure 5The bottom of connecting block 1 has a mounting groove 3 19, and a flexible plate 20 is fixedly connected to the inner wall of the mounting groove 3 19. The mounting groove 3 19 provides installation space for the flexible plate 20. The flexible plate 20 is soft and can act as a buffer and shock absorber when the quick connector is placed on a flat surface. A fixing plate 21 is fixedly connected to the left side of the outer wall of connecting block 1. The outer wall of fixing plate 21 has a smooth design. Fixing plate 21 can enhance the structural strength of connecting block 1. Its smooth design avoids sharp edges and corners, preventing scratches to operators during operation. A connecting groove 3 22 is opened on the left side of the outer wall of fixing plate 21. A flexible plate 23 is fixedly connected to the inner wall of the connecting groove 3 22. The connecting groove 3 22 is used to fix the flexible plate 23. The flexible plate 23 can further enhance the buffering effect when the fixed plate 21 comes into contact with other objects. A sealing groove 24 is opened in the middle of the right side of the outer wall of the locking device 5. A sealing ring 25 is fixedly connected to the inner wall of the sealing groove 24. The outer wall of the sealing ring 25 engages with the left end of the outer wall of the connecting pipe 8. The sealing groove 24 provides an installation position for the sealing ring 25. The sealing ring 25 is elastic. After engaging with the left end of the outer wall of the connecting pipe 8, it can fill the gap between the locking device 5 and the connecting pipe 8 to form a sealing structure.

[0052] Specifically, the soft plate 20 fixed in the mounting groove 19 at the bottom of the connecting block 1 cushions and reduces shock and wear when placed, and improves grip comfort when held. The fixing plate 21 adopts a smooth design to avoid scratching operators and reduce the risk of component wear. At the same time, the connecting groove 22 on the fixing plate 21 fixes the soft plate 23, further enhancing cushioning and grip stability. The sealing ring 25 fixed in the sealing groove 24 in the middle of the right side of the outer wall of the locking device 5 tightly engages with the left end of the outer wall of the connecting pipe 8, using elastic deformation to fill the gap and form a reliable sealing structure to effectively prevent fluid leakage.

[0053] Working principle: First, plug the connector 3 into the external equipment or pipe to complete the initial connection. Then, align the connecting block 2 9 on the connecting pipe 8 with the left side of the inner wall of the locking device 5 so that the two engage and achieve the initial positioning of the connecting pipe 8. Then, rotate the handle 16 on the top of the locking device 5 to drive the locking device 5 to rotate around the left side of the outer wall of the fixed pipe 4. At this time, the threaded groove 7 on the fixed block 6 interacts with the screw block 10 on the left side of the outer wall of the connecting pipe 8. As the locking device 5 rotates, the screw block 10 rotates in the threaded groove 7 and moves towards the fixed pipe 4, so that the connecting pipe 8 gradually approaches and is tightly connected to the fixed pipe 4. At the same time, the sealing ring 25 in the middle of the right side of the outer wall of the locking device 5 engages with the left end of the outer wall of the connecting pipe 8 to achieve a quick connection.

[0054] Furthermore, when the fluid enters the connecting pipe 8, it first passes through the filter plate 202 on the right side of the inner wall of the sealing barrel 201. The filter plate 202 intercepts and filters impurities and particles in the fluid, preventing them from entering subsequent pipes or equipment and ensuring the cleanliness of the transmission medium. At the same time, the sealing groove 203 on the left side of the outer wall of the sealing barrel 201 and the sealing ring 205 in the end slot 204 on the outer wall of the connecting pipe 8 are tightly engaged. The sealing ring 205 fills the gap between the two with its elastic deformation, forming a sealing barrier to prevent the fluid from leaking from the connection between the sealing barrel 201 and the connecting pipe 8. During the quick coupling connection process, as the connecting pipe 8 and the fixed pipe 4 are gradually connected tightly through the locking device 5, the various components of the sealing mechanism 2 cooperate stably, continuously ensuring the sealing and cleanliness of the fluid transmission. When disassembling, the sealing structure of the sealing mechanism 2 is released, and the filter plate 202 is also convenient for subsequent cleaning and maintenance.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick connector, comprising a connecting block (1), characterized in that: A connector (3) is fixedly connected to the top of the first connecting block (1). A fixing tube (4) is fixedly connected to the right side of the first connecting block (1). A locking device (5) is rotatably connected to the left side of the outer wall of the fixing tube (4). A fixing block (6) is fixedly connected to the upper and lower ends of the left side of the locking device (5). Threaded grooves (7) are opened on the adjacent sides of the two fixing blocks (6). A connecting tube (8) is provided on the right side of the outer wall of the fixing tube (4). A connecting block (9) is fixedly connected to the upper and lower sides of the left end of the connecting tube (8). The right side of the outer wall of the two connecting blocks (9) is engaged with the left side of the inner wall of the locking device (5). A screw block (10) is fixedly connected to the left side of the outer wall of the connecting tube (8). The outer wall of the screw block (10) is threadedly connected to the inner wall of the two threaded grooves (7). A sealing mechanism (2) is provided on the inner wall of the connecting tube (8).

2. A quick coupling according to claim 1, characterized in that: The sealing mechanism (2) includes a sealing barrel (201). The outer wall of the sealing barrel (201) is fixedly connected to the middle of the inner wall of the connecting pipe (8). A filter plate (202) is fixedly connected to the right side of the inner wall of the sealing barrel (201). A sealing groove (203) is opened on the left side of the outer wall of the sealing barrel (201). A slot (204) is opened at the end of the outer wall of the connecting pipe (8). A sealing ring (205) is fixedly connected to the inner wall of the slot (204). The outer wall of the sealing ring (205) engages with the inner wall of the sealing groove (203).

3. A quick coupling according to claim 1, characterized in that: A connecting groove (11) is provided on the right side of the outer wall of the connecting pipe (8), and a reflective sticker (12) is provided on the inner wall of the connecting groove (11).

4. A quick coupling according to claim 1, characterized in that: The upper and lower sides of the outer walls of the two fixing blocks (6) are provided with mounting grooves (13), and the inner walls of the two mounting grooves (13) are fixedly connected with indicator arrows (14).

5. A quick coupling according to claim 1, characterized in that: The top of the locking device (5) is provided with a second mounting groove (15), and a handle (16) is fixedly connected to the inner wall of the second mounting groove (15).

6. A quick connector according to claim 1, wherein: A connecting groove 2 (17) is provided on the front side of the outer wall of the connecting block 1 (1), and a warning sign (18) is fixedly connected to the inner wall of the connecting groove 2 (17).

7. A quick coupling according to claim 1, characterized in that: The bottom of the connecting block 1 (1) is provided with a mounting groove 3 (19), and a flexible plate 1 (20) is fixedly connected to the inner wall of the mounting groove 3 (19).

8. The quick connector of claim 1, wherein: A fixing plate (21) is fixedly connected to the left side of the outer wall of the connecting block (1), and the outer wall of the fixing plate (21) is designed with a smooth shape.

9. A quick connector according to claim 8, characterized in that: The outer wall of the fixed plate (21) is provided with a connecting groove three (22), and the inner wall of the connecting groove three (22) is fixedly connected with a flexible plate two (23).

10. The quick connector of claim 1, wherein: A sealing groove 2 (24) is provided on the middle right side of the outer wall of the locking device (5). A sealing ring 2 (25) is fixedly connected to the inner wall of the sealing groove 2 (24). The outer wall of the sealing ring 2 (25) is engaged with the left end of the outer wall of the connecting pipe (8).

Images