Novel pneumatic pipe quick-connection plug

Abstract

The utility model discloses a novel pneumatic pipe quick-connection plug, which belongs to the technical field of quick-connection devices and comprises a connecting plug and a locking piece, and the connecting plug comprises a connecting pipe body and a medium flow passage axially arranged in the connecting pipe body. A mounting pipe cavity, a conical clamping ring, a limiting ring groove and a limiting clamping ring are sequentially arranged on the connecting pipe body in the flowing direction of the medium flow channel; the locking piece comprises a locking pipe body, a sealing ring body is arranged on the outer side wall of the locking pipe body, a plurality of connecting blocks are arranged at one end of the locking pipe body in the circumferential direction of the pipe wall, an expansion joint is formed between every two adjacent connecting blocks, the far ends of the connecting blocks protrude outwards to form locking blocks, and locking steps are formed on the outer walls of the connecting blocks. When the locking piece is pushed to be inserted into the connecting plug, the multiple locking blocks deform inwards through the limiting clamping ring, restore to original shapes after penetrating through the limiting clamping ring and are clamped into the limiting annular groove, and the limiting clamping ring is correspondingly clamped in the locking step. The pipe body and the rubber pipe can be fixedly connected quickly, efficiently, stably, hermetically and firmly.

Description

Technical Field

[0001] This utility model relates to quick-connect devices, and more particularly to a novel pneumatic quick-connect plug. Background Technology

[0002] In production and daily life, the connections between plastic pipes and other plastic pipes, as well as between plastic pipes and metal pipes or valves, are mostly achieved through methods such as pressure ring locking, heat fusion, or bonding. Heat fusion connections require specialized tools, are cumbersome to install, and are not suitable for users to install and replace pipes themselves. Pipes bonded with adhesives are prone to releasing harmful substances over time, affecting water quality. Connecting and disassembling these connections is also very troublesome, costly, and the quality of the joints cannot be guaranteed. Other quick couplings are also used for pipe connections, but their structures are more complex, with more components that cannot be easily disassembled. The manufacturing process is cumbersome, inefficient, costly, and has limited functionality. Some quick couplings also have poor sealing performance. Utility Model Content

[0003] Technical problem to be solved: The purpose of this utility model is to provide a new type of pneumatic quick-connect plug to improve the connection speed and sealing performance of the quick-connect plug.

[0004] Technical solution: The present invention provides a novel quick-connect plug for pneumatic hoses, the quick-connect plug comprising:

[0005] A connector includes a connecting tube body. The connecting tube body has a medium flow channel along its axial direction, and along the flow direction of the medium flow channel, it sequentially includes an installation cavity, a tapered retaining ring, a limiting annular groove, and a limiting retaining ring. The installation cavity and the tapered retaining ring have approximately the same inner diameter. The tapered retaining ring has a trapezoidal cross-section limiting annular groove formed on its distal outer periphery, and a ring-shaped limiting retaining ring is provided between the inner wall of the limiting annular groove and the open end of the connecting tube body.

[0006] A locking component includes a locking tube body, the outer wall of which is provided with a sealing ring adapted to the inner diameter of the open end of the connecting tube body; multiple connecting blocks are arranged circumferentially along the tube wall at the mating end of the locking tube body and the connecting tube body, and an expansion joint is formed between adjacent connecting blocks; the distal end of the connecting block protrudes outward to form a locking block, the cross-sectional structure of the locking block has a shape approximately the same as the cross-section of the limiting ring groove, the outer diameter of the annular structure composed of multiple locking blocks is larger than the outer diameter of the annular structure composed of connecting blocks, and a locking step is formed on the outer wall of the connecting block;

[0007] During the process of pushing the locking member into the open end of the connector plug, multiple locking blocks deform inward through the limiting retaining ring, pass through the limiting retaining ring to restore their original shape and be inserted into the limiting ring groove, and the limiting retaining ring is correspondingly fitted into the locking step formed at the rear end of the locking block.

[0008] Preferably, the mounting cavity has a sealing groove in the direction of liquid inlet of the conical retaining ring, the inner diameter of the sealing groove is larger than the inner diameter of the mounting cavity, and a sealing ring is fitted in the sealing groove.

[0009] Preferably, the outer wall of the connecting pipe is provided with a hexagonal nut structure, and an external thread area is provided on the outer wall away from the open end.

[0010] Preferably, the locking tube body is provided with a mounting ring body away from the connecting end, and the inner wall of the mounting ring body is chamfered.

[0011] Preferably, the locking block has a first conical surface on its outer front side and a second conical surface on its inner front side, and the front ends of multiple locking blocks can be correspondingly supported on the front end of the conical retaining ring.

[0012] Preferably, locking protrusions are provided on the inner side of the multiple locking blocks at the rear end of the second conical surface, and the inner diameter of the locking protrusions is consistent with the inner diameter of the installation cavity.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention achieves a fast, stable, and secure connection between the pneumatic hose and the connector by pushing the locking component along the pneumatic hose to insert into the open end of the connector plug. During this process, multiple locking blocks deform inward under the pressure of the limiting retaining ring, and return to their original shape after passing through the limiting retaining ring. This allows the outer wall of the locking block to be inserted into the limiting ring groove, and the limiting retaining ring to be inserted into the locking step formed at the rear end of the locking block. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the connection structure between the quick-connect plug and the pneumatic tube of this utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the quick-connect plug and pneumatic tube;

[0017] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure of the central locking component;

[0018] Figure 4 for Figure 2 Axial structural cross-sectional view of the quick-connect plug;

[0019] Figure 5 for Figure 3 Axial structural cross-sectional view of the locking component;

[0020] Figure 6 for Figure 1 A cross-sectional view of the quick-connect plug and pneumatic tube axial structure.

[0021] Reference numerals: 100, quick-connect plug; 1, connecting plug; 11, connecting tube body; 12, medium flow channel; 13, external thread area; 14, mounting cavity; 15, sealing groove; 16, tapered retaining ring; 17, limiting ring groove; 18, limiting retaining ring; 2, locking element; 21, locking tube body; 22, mounting ring body; 23, sealing ring body; 24, connecting block; 25, expansion joint; 26, locking block; 27, first tapered surface; 28, second tapered surface; 29, locking step; 210, locking protrusion; 3, pneumatic hose; 4, sealing ring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings. Figures 1-6 The technical solutions of the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0023] like Figures 1-6As shown, this utility model discloses a novel pneumatic hose quick-connect plug. The quick-connect plug 100 includes a connecting plug 1 and a locking element. The connecting plug 1 includes a connecting tube body 11, which has a medium flow channel 12 arranged along its axial direction. Along the flow direction of the medium flow channel 12, the connecting tube body 11 sequentially includes an installation cavity 14, a conical retaining ring 16, a limiting annular groove 17, and a limiting retaining ring 18. The installation cavity 14 and the conical retaining ring 16 have approximately the same inner diameter, which is adapted to the outer diameter of the pneumatic hose 3 to be connected. When the pneumatic hose 3 is inserted into the connecting tube body 11, it is supported in the installation cavity, and the conical retaining ring 16 fits snugly around the pneumatic hose. A limiting annular groove 17 with a trapezoidal cross-section is formed on the outer periphery of the distal end of the conical retaining ring 16. A ring-shaped limiting retaining ring 18 is provided between the inner wall of the limiting annular groove 17 and the open end of the connecting tube body 11. The locking component 2 includes a locking tube body 21. The outer wall of the locking tube body 21 is provided with a sealing ring 23 that matches the inner diameter of the open end of the connecting tube body 11. When the locking component 2 is inserted into the connecting plug 1, the sealing ring is supported within the open end of the connecting tube body 11, thus sealing the open end of the connecting tube body 11. Multiple connecting blocks 24 are arranged circumferentially along the tube wall at the mating end of the locking tube body 21 and the connecting tube body 11. An expansion joint 25 is formed between adjacent connecting blocks 24. The expansion joint 25 allows the multiple connecting blocks 24 and their end locking blocks 26 to contract radially inward, meeting assembly requirements. The distal end of the connecting block 24 protrudes outward to form a locking block 26. The cross-sectional structure of the locking block 26 has a shape that is approximately the same as the cross-section of the limiting ring groove 17, and its shape is a trapezoidal structure. When assembled, the locking block 26 can be supported in the limiting ring groove 17. The outer diameter of the ring structure composed of multiple locking blocks 26 is larger than the outer diameter of the ring structure composed of connecting blocks 24, and a locking step 29 is formed on the outer wall of the connecting block 24. During installation, when the locking member 2 is pushed into the open end of the connecting plug 1, multiple locking blocks 26 deform inward under the pressure of the limiting retaining ring 18. After passing through the limiting retaining ring 18, they return to their original shape, so that the outer wall of the locking block 26 is correspondingly inserted into the limiting ring groove 17, and the limiting retaining ring 18 is correspondingly engaged in the locking step 29 formed at the rear end of the locking block 26.

[0024] like Figure 4 and Figure 6 As shown, the mounting cavity 14 is provided with a sealing groove 15 in the liquid inlet direction of the conical retaining ring 16. The inner diameter of the sealing groove 15 is larger than the inner diameter of the mounting cavity 14. A sealing ring 4 is installed in the sealing groove 15. When the pneumatic hose 3 is inserted into the position, the inner side of the sealing ring 4 is press-fitted with the outer wall of the pneumatic hose 3 to improve the sealing performance between the pneumatic hose and the connecting plug 1.

[0025] like Figures 1-2 As shown, the outer wall of the connecting pipe 11 is provided with a hexagonal nut structure, and the outer wall away from the open end is provided with an external thread area 13.

[0026] like Figure 3 As shown, a mounting ring 22 is provided on the locking tube body 21 away from the connecting end. The inner wall of the mounting ring 22 is chamfered to facilitate the insertion of the pneumatic hose 3 into the locking tube body 21 for installation.

[0027] like Figure 5 As shown, the locking block 26 has a first conical surface 27 on its outer front end and a second conical surface 28 on its inner front end. The front ends of multiple locking blocks 26 can be supported on the front end of the conical retaining ring 16. This arrangement not only facilitates the quick connection between the locking member and the connector 1, but also, after the connection is in place, the conical retaining ring 16 supports the front end of the annular structure formed by multiple locking blocks 26, thereby limiting the position of the locking member 2 inserted into the connector 1. During the flow of fluid in the pneumatic hose, the locking block 26 can be inserted into the limiting ring groove 17, and the limiting retaining ring 18 can restrict the locking block 26 from moving backward, effectively preventing the locking member 2 from disengaging from the quick connector.

[0028] like Figure 5 As shown, locking protrusions 210 are respectively provided on the inner side of multiple locking blocks 26 at the rear end of the second conical surface 28, and the inner diameter of the locking protrusions 210 is consistent with the inner diameter of the mounting cavity 14. When the pneumatic hose is inserted into the locking tube body 21, the locking protrusions can be installed on the outer wall of the pneumatic hose to achieve a firm connection between the pneumatic hose and the locking component.

[0029] The working principle or method of this utility model:

[0030] In use, the pneumatic hose is inserted into the locking tube body 21 and extends a distance from one end of the locking block 26. Then, the pneumatic hose is inserted into the mounting cavity 14 of the connecting tube body 11 until it reaches the innermost end of the mounting cavity to form a support. Then, as the locking member 2 is pushed along the pneumatic hose to insert into the open end of the connecting plug 1, multiple locking blocks 26 are deformed inward by the pressure of the limiting ring 18. After passing through the limiting ring 18, they return to their original shape, so that the outer wall of the locking block 26 is correspondingly engaged in the limiting ring groove 17, and the limiting ring 18 is correspondingly engaged in the locking step 29 formed at the rear end of the locking block 26, thereby achieving a quick, stable, and secure connection between the pneumatic hose and the connecting plug 1.

[0031] The above are preferred embodiments of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A novel pneumatic hose quick-connect plug, characterized in that, The quick-connect plug (100) includes: A connecting plug (1) includes a connecting tube (11), which has a medium flow channel (12) along its axial direction. The connecting tube (11) is provided with an installation cavity (14), a conical retaining ring (16), a limiting ring groove (17), and a limiting retaining ring (18) in sequence along the flow direction of the medium flow channel (12). The installation cavity (14) and the conical retaining ring (16) have approximately the same inner diameter. The limiting ring groove (17) with a trapezoidal cross-section is formed on the outer periphery of the distal end of the conical retaining ring (16), and a limiting retaining ring (18) with an annular structure is provided between the inner wall of the limiting ring groove (17) and the open end of the connecting tube (11). The locking component (2) includes a locking tube body (21), and a sealing ring (23) adapted to the inner diameter of the open end of the connecting tube body (11) is provided on the outer wall of the locking tube body (21); multiple connecting blocks (24) are provided along the circumference of the tube wall at the mating end of the locking tube body (21) and the connecting tube body (11), and an expansion and contraction gap (25) is formed between adjacent connecting blocks (24); the far end of the connecting block (24) protrudes outward to form a locking block (26), and the cross-sectional structure of the locking block (26) has a shape that is approximately the same as the cross-section of the limiting ring groove (17). The outer diameter of the ring structure composed of multiple locking blocks (26) is larger than the outer diameter of the ring structure composed of connecting blocks (24) and a locking step (29) is formed on the outer wall of the connecting block (24). During the process of pushing the locking member (2) into the open end of the connecting plug (1), multiple locking blocks (26) deform inward through the limiting ring (18) and return to their original shape and are locked into the limiting ring groove (17), and the limiting ring (18) is correspondingly locked in the locking step (29) formed at the rear end of the locking block (26).

2. The novel pneumatic quick-connect plug according to claim 1, characterized in that, The installation cavity (14) is provided with a sealing groove (15) in the liquid inlet direction of the conical retaining ring (16). The inner diameter of the sealing groove (15) is larger than the inner diameter of the installation cavity (14), and a sealing ring (4) is installed in the sealing groove (15).

3. The novel pneumatic quick-connect plug according to claim 1, characterized in that, The outer wall of the connecting pipe (11) is provided with a hexagonal nut structure, and an external thread area (13) is provided on the outer wall away from the open end.

4. The novel pneumatic quick-connect plug according to claim 1, characterized in that, The locking tube (21) is provided with an installation ring (22) away from the connection end, and the inner wall of the installation ring (22) is chamfered.

5. The novel pneumatic quick-connect plug according to claim 1, characterized in that, The locking block (26) has a first conical surface (27) on its outer front side and a second conical surface (28) on its inner front side. The front ends of multiple locking blocks (26) can be supported on the front ends of the conical retaining ring (16).

6. The novel pneumatic quick-connect plug according to claim 2, characterized in that, Multiple locking blocks (26) are provided with locking protrusions (210) on the inner side of the second conical surface (28) at the rear end, and the inner diameter of the locking protrusions (210) is consistent with the inner diameter of the installation cavity (14).

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