A plug seal structure

Abstract

The utility model discloses a kind of plug-in sealing structures, including male needle assembly, female needle assembly, plug assembly, first elastic member, plug assembly and second elastic member, plug assembly is set to flow-through hole;First elastic member is set in first hole section, one end of first elastic member and male needle assembly are abutted, the other end of first elastic member and plug main body are abutted;Plug assembly is set in connecting hole, and the inner wall of connecting hole and the top end of plug assembly are enclosed and form with accommodating space, second elastic member is set in connecting hole, one end of second elastic member and plug assembly are abutted, the other end of second elastic member and female needle assembly are abutted.The plug-in sealing structure of the application solves the phenomenon that internal residual gas will overflow and leak when male needle assembly and female needle assembly are separated, improves the sealing property when male needle assembly and female needle assembly are plugged, and improves safety reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of connectors, and in particular to a mating sealing structure. Background Technology

[0002] The female needle is used to introduce high-pressure gas. After the male and female needles are inserted, high-pressure gas is introduced into the male needle. When the male and female needles separate, the vent end of the female needle begins to seal slowly. During this process, some high-pressure gas inside the female needle still leaks out from the vent end, causing residual high-pressure gas in the female needle to leak out at the moment of separation. Therefore, if the application requires that the gas not leak out, this situation constitutes a product seal failure. Utility Model Content

[0003] Therefore, it is necessary to provide a mating sealing structure to solve the above-mentioned technical problems.

[0004] A mating sealing structure includes a male pin assembly and a female pin assembly. The female pin assembly has a connecting hole inside, and the male pin assembly has a flow hole inside, which communicates with the connecting hole. The flow hole includes a first segment and a second segment, with the second segment located below the first segment. The diameter of the second segment is smaller than the diameter of the first segment. The structure also includes:

[0005] A plug assembly is disposed in the flow hole and is used to seal or open the connection between the first hole segment and the second hole segment;

[0006] A first elastic element is disposed within the first hole segment. One end of the first elastic element abuts against the male needle assembly, and the other end of the first elastic element abuts against the plug body.

[0007] A plug assembly is disposed within the connection hole. The inner wall of the connection hole and the top of the plug assembly form a receiving space. The plug assembly is used to seal or open the connection hole. During insertion, the male pin assembly and the plug assembly are inserted into the connection hole through the receiving space and abut against the plug assembly.

[0008] A second elastic element is disposed in the connecting hole. One end of the second elastic element abuts against the plug assembly, and the other end of the second elastic element abuts against the female needle assembly.

[0009] Optionally, the plug assembly includes a plug body and a first sealing ring. The plug body is disposed in the flow hole, and the plug body has a first groove. The first groove is arranged circumferentially around the plug body, and the first sealing ring is disposed in the first groove. The first sealing ring is used to seal the connection between the first hole segment and the second hole segment.

[0010] Optionally, the plug body includes a first main body and a second main body, the diameter of the second main body is smaller than the diameter of the first main body, the first main body is disposed in the first hole segment, the second main body is disposed in the second hole segment, and the first groove is disposed between the first main body and the second main body.

[0011] Optionally, the plug body further includes a plug portion located below the second body portion, the diameter of the plug portion being smaller than the diameter of the second body portion, and the flow hole further includes a third hole segment located below the second hole segment, the diameter of the third hole segment being smaller than the diameter of the second hole segment, the plug portion being disposed within the third hole segment and extending out from the bottom end of the third hole segment.

[0012] Optionally, the connecting hole includes a first through hole, a second through hole, and a third through hole from top to bottom. The diameter of the second through hole is smaller than the diameter of the first through hole, and the diameter of the second through hole is also smaller than the diameter of the third through hole. The plug-in part is used to be inserted into the first through hole.

[0013] Optionally, the plug assembly includes a plug body and a second sealing ring. The plug body also has a second groove, which is arranged circumferentially around the plug body. The second sealing ring is disposed in the second groove and is used to seal the connection between the second through hole and the third through hole.

[0014] Optionally, the plug body includes a first plug and a second plug, the diameter of the first plug is smaller than the diameter of the second plug, the first plug is disposed in the first through hole and the second through hole, the second plug is disposed in the third through hole, and the second groove is disposed between the first plug and the second plug.

[0015] Optionally, the male pin assembly includes a male end pin and a first connector. The male end pin has a flow hole inside, and the first connector is disposed in the flow hole. The first connector and the flow hole are connected.

[0016] Optionally, the female pin assembly includes a female end pin and a second connector. The female end pin has a connection hole inside, and the second connector is partially disposed in the connection hole. The second connector and the connection hole are connected.

[0017] This application provides a mating sealing structure. By forming a receiving space through the inner wall of the connecting hole and the top of the plug assembly, when the male and female pin assemblies are about to be pulled out, the internal gas can flow from the female pin assembly into the male pin assembly during mating until no gas escapes from the male and female pin assemblies, and then the male and female pin assemblies are separated. Therefore, the mating sealing structure of this application solves the problem of residual gas leakage when the male and female pin assemblies are separated, improves the sealing performance of the male and female pin assemblies during mating, and enhances safety and reliability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is an exploded view of the male pin assembly, plug assembly, and first elastic element of the mating sealing structure in one embodiment;

[0020] Figure 2 This is a cross-sectional view of the male pin assembly, the plug assembly, and the first elastic element assembled in one embodiment;

[0021] Figure 3 This is an exploded view of the female needle assembly, the plug assembly, and the second elastic element in one embodiment;

[0022] Figure 4 This is a cross-sectional view of the assembly of the female needle assembly, the plug assembly, and the second elastic element in one embodiment.

[0023] Figure 5 This is a cross-sectional view of the female pin assembly and the male pin assembly in an interlocking state in one embodiment.

[0024] Figure 6 for Figure 5 Enlarged view of point A;

[0025] Figure 7 This is a cross-sectional view of the female needle assembly and the male needle assembly being pulled outwards in one embodiment;

[0026] Figure 8 for Figure 7Enlarged view of point B.

[0027] 1. Male needle assembly; 11. Flow hole; 111. First hole segment; 112. Second hole segment; 113. Third hole segment; 12. Male end insert pin; 13. First connector; 14. Male needle seat; 15. Male needle head; 16. Third sealing ring; 2. Female needle assembly; 21. Connecting hole; 211. First through hole; 212. Second through hole; 213. Third through hole; 22. Female end insert pin; 23. Second connector; 3. Plug assembly; 31. Plug body; 311. First body part; 312. Second body part; 313. Insertion part; 32. First sealing ring; 33. First groove; 4. First elastic element; 5. Plug assembly; 51. Plug body; 511. First plug; 512. Second plug; 52. Second sealing ring; 53. Second groove; 6. Second elastic element; 7. Accommodation space.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] 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 scope of protection of the present utility model.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] refer to Figures 1 to 8 This application provides a mating sealing structure, which includes a male needle assembly 1, a female needle assembly 2, a plug assembly 3, a first elastic element 4, a plug assembly 5, and a second elastic element 6. The female needle assembly 2 has a connecting hole 21 that extends axially along the female needle assembly 2. During mating, the male needle assembly 1 is partially inserted into the connecting hole 21. The male needle assembly 1 also has a flow hole 11 that extends axially along the male needle assembly 1 and communicates with the connecting hole 21. The flow hole 11 includes a first segment 111 and a second segment 112, with the second segment 112 located below the first segment 111 and having a smaller diameter than the first segment 111. The plug assembly 3 includes a plug body 31 and a first sealing ring 32. The plug body 31 is disposed in the flow hole 11 and has a first groove. 33. A first groove 33 is arranged circumferentially around the plug body 31. A first sealing ring 32 is disposed in the first groove 33. The first sealing ring 32 is used to seal the connection between the first hole segment 111 and the second hole segment 112. A first elastic member 4 is disposed in the first hole segment 111. One end of the first elastic member 4 abuts against the male needle assembly 1, and the other end of the first elastic member 4 abuts against the plug body 31. A plug assembly 5 is disposed in the connecting hole 21. The inner wall of the connecting hole 21 and the top of the plug assembly 5 form a receiving space 7. The plug assembly 5 is used to seal or open the connecting hole 21. When inserted, the male needle assembly 1 and the plug assembly 3 are inserted into the connecting hole 21 through the receiving space 7 and abut against the plug assembly 5. A second elastic member 6 is disposed in the connecting hole 21. One end of the second elastic member 6 abuts against the plug assembly 5, and the other end of the second elastic member 6 abuts against the female needle assembly 2.

[0033] In the initial state, plug assembly 3 blocks the flow hole 11 inside the male needle assembly 1, and plug assembly 5 blocks the connection hole 21 inside the female needle assembly 2. (Reference) Figure 5 and Figure 6 The male needle assembly 1 is inserted into the female needle assembly 2. The plug assembly 3 and the male needle assembly 1 enter from the receiving space 7. Then, the plug assembly 3 and the male needle assembly 1 push the plug assembly 5 downward and compress the second elastic member 6 to move downward, so that the plug assembly 5 opens the connecting hole 21. The plug assembly 3 moves upward along the first hole section 111, so that the first sealing ring 32 moves into the first hole section 111. The first sealing ring 32 cancels the seal between the first hole section 111 and the second hole section 112, so that the flow hole 11 and the connecting hole 21 are connected, and high-pressure gas can enter the flow hole 11 from the connecting hole 21.

[0034] refer to Figure 7 and Figure 8When the male needle assembly 1 and the female needle assembly 2 are pulled out and separated, the plug assembly 5 moves upward synchronously with the plug assembly 3 under the action of the upward pushing force of the internal gas and the elastic force released by the second elastic element 6. When the plug assembly 5 moves to return to the initial state, the plug assembly 5 completes the sealing. At this time, the plug assembly 3 is located in the receiving space 7 above the plug assembly 5. The plug assembly 3 is still in the open state and can continue to be pulled upward along the receiving space 7. When the male needle assembly 1 and the female needle assembly 2 are inserted, the residual gas inside can continue to enter the flow hole 11. When there is no residual gas inside, the plug assembly 3 closes and the male needle assembly 1 is pulled out.

[0035] This application provides a mating sealing structure. By forming a receiving space 7 through the inner wall of the connecting hole 21 and the top of the plug assembly 5, when the male needle assembly 1 and the female needle assembly 2 are about to be pulled out, the internal gas can flow from the female needle assembly 2 into the male needle assembly 1 during mating until no gas overflows from the female needle assembly 2 and the male needle assembly 1, and then the male needle assembly 1 and the female needle assembly 2 are separated. Therefore, the mating sealing structure of this application solves the problem of residual gas overflowing and leaking when the male needle assembly 1 and the female needle assembly 2 are separated, improving the sealing performance of the male needle assembly 1 and the female needle assembly 2 during mating and improving safety and reliability.

[0036] refer to Figure 1 and Figure 2 The plug body 31 includes a first body portion 311, a second body portion 312, and a plug portion 313. The diameter of the second body portion 312 is smaller than the diameter of the first body portion 311. The first body portion 311 is disposed within the first hole segment 111, and the second body portion 312 is disposed within the second hole segment 112. A first groove 33 is disposed between the first body portion 311 and the second body portion 312. The plug portion 313 is located below the second body portion 312, and its diameter is smaller than the diameter of the second body portion 312. The flow hole 11 also includes a third hole segment 113, which is located below the second hole segment 112. The diameter of the third hole segment 113 is smaller than the diameter of the second hole segment 112. The plug portion 313 is disposed within the third hole segment 113 and extends out from the bottom end of the third hole segment 113.

[0037] Specifically, the maximum diameter of the first main body 311 is smaller than the diameter of the first hole segment 111, the maximum diameter of the second main body 312 is smaller than the diameter of the second hole segment 112, and the diameter of the insertion part 313 is smaller than the diameter of the third hole segment 113. This allows a flow channel for high-pressure gas to flow around the flow hole 11 and the plug body 31. Thus, when the first sealing ring 32 moves upward to the first hole segment 111 and cancels the seal at the connection between the first hole segment 111 and the second hole segment 112, the flow hole 11 in the male needle assembly 1 is connected, and the plug assembly 3 does not obstruct the flow of high-pressure gas along the flow hole 11.

[0038] refer to Figure 3 and Figure 4 The connecting hole 21 includes a first through hole 211, a second through hole 212 and a third through hole 213 from top to bottom. The inner wall of the first through hole 211 and the top of the plug assembly 5 form a receiving space 7. The diameter of the second through hole 212 is smaller than the diameter of the first through hole 211 and the diameter of the third through hole 213 is also smaller. The insertion part 313 is used to be inserted into the first through hole 211.

[0039] The plug assembly 5 includes a plug body 51 and a second sealing ring 52. The plug body 51 also has a second groove 53, which is arranged circumferentially around the plug body 51. The second sealing ring 52 is disposed in the second groove 53 and is used to seal the connection between the second through hole 212 and the third through hole 213.

[0040] The plug body 51 includes a first plug 511 and a second plug 512. The diameter of the first plug 511 is smaller than the diameter of the second plug 512. The first plug 511 is disposed in the first through hole 211 and the second through hole 212. The second plug 512 is disposed in the third through hole 213. The second groove 53 is disposed between the first plug 511 and the second plug 512.

[0041] Specifically, the diameter of the first plug 511 is smaller than the diameter of the second through hole 212, and the diameter of the second plug 512 is smaller than the diameter of the third through hole 213. A flow channel for high-pressure gas to flow is formed around the connecting hole 21 and the plug assembly 5. Thus, when the plug assembly 5 moves downward, the second sealing ring 52 moves into the third through hole 213, and the connecting hole 21 in the female needle assembly 2 is connected. The plug assembly 5 will not obstruct the flow of high-pressure gas in the connecting hole 21.

[0042] Specifically, in the initial state, the first sealing ring 32 is located between the first hole segment 111 and the second hole segment 112, and the second sealing ring 52 is located between the second through hole 212 and the third through hole 213.

[0043] refer to Figure 2 The male pin assembly 1 includes a male end pin 12 and a first connector 13. The male end pin 12 has a flow hole 11 inside, and the first connector 13 is partially disposed in the flow hole 11. The first connector 13 and the flow hole 11 are connected.

[0044] One end of the first elastic member 4 abuts against the first connector 13, and the other end abuts against the first main body 311.

[0045] Specifically, the male insertion pin 12 includes a male pin seat 14 and a male pin head 15. The diameter of the male pin head 15 is smaller than the diameter of the male pin seat 14. A flow hole 11 is provided through the male pin seat 14 and the male pin head 15. A first connector 13 is provided at the end of the male pin seat 14 away from the male pin head 15. The male pin head 15 matches the first through hole 211. The male pin head 15 is used to insert into the first through hole 211 and abut against the top of the first plug 511.

[0046] Specifically, the male needle assembly 1 also includes a third sealing ring 16, which is sleeved on the male needle head 15 so that the male needle head 15 is inserted into the first through hole 211 to achieve a seal between the male needle head 15 and the first through hole 211.

[0047] refer to Figure 3 and Figure 4 The female needle assembly 2 includes a female end pin 22 and a second connector 23. The female end pin 22 has a connection hole 21 inside, and the second connector 23 is partially disposed in the connection hole 21. The second connector 23 and the connection hole 21 are connected.

[0048] When the male needle assembly 1 and the female needle assembly 2 are inserted, the male needle head 15 and the plug body 31 are inserted into the first through hole 211 and push open the plug assembly 5. At the same time, the second elastic member 6 is compressed and moves downward. When the male end pin 12 and the female end pin 22 are inserted to the stop surface, the end of the second connector 23 away from the female end pin 22 is used to connect the high-pressure gas. The high-pressure gas enters the third through hole 213 through the second connector 23, and then enters the flow hole 11 of the male needle assembly 1 through the first through hole 211 around the plug assembly 5.

[0049] Therefore, the product of this application has a good sealing effect, is safe and reliable, durable and long-lasting, and has a simple structure and short assembly time. Under high pressure gas, it can be repeatedly inserted and removed, and the force required for insertion and removal is small, making it easy to operate.

[0050] Furthermore, when the male needle assembly 1 and the female needle assembly 2 are in the interlocking state, the outer diameter of the male needle head 15 and the inner diameter of the third sealing ring 16 are interference fit, further ensuring the sealing effect.

[0051] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A mating sealing structure, comprising a male pin assembly and a female pin assembly, wherein the female pin assembly has a connecting hole inside, and the male pin assembly has a flow hole inside, the flow hole communicating with the connecting hole, the flow hole comprising a first segment and a second segment, the second segment being located below the first segment, and the diameter of the second segment being smaller than the diameter of the first segment, characterized in that, Also includes: A plug assembly is disposed in the flow hole and is used to seal or open the connection between the first hole segment and the second hole segment; A first elastic element is disposed within the first hole segment, one end of the first elastic element abuts against the male needle assembly, and the other end of the first elastic element abuts against the plug assembly; A plug assembly is disposed within the connection hole. The inner wall of the connection hole and the top of the plug assembly form a receiving space. The plug assembly is used to seal or open the connection hole. During insertion, the male pin assembly and the plug assembly are inserted into the connection hole through the receiving space and abut against the plug assembly. A second elastic element is disposed in the connecting hole. One end of the second elastic element abuts against the plug assembly, and the other end of the second elastic element abuts against the female needle assembly.

2. The interlocking sealing structure according to claim 1, characterized in that, The plug assembly includes a plug body and a first sealing ring. The plug body is disposed in the flow hole and has a first groove. The first groove is arranged circumferentially around the plug body. The first sealing ring is disposed in the first groove and is used to seal the connection between the first hole segment and the second hole segment.

3. The interlocking sealing structure according to claim 2, characterized in that, The plug body includes a first main body and a second main body, the diameter of the second main body is smaller than the diameter of the first main body, the first main body is disposed in the first hole segment, the second main body is disposed in the second hole segment, and the first groove is disposed between the first main body and the second main body.

4. The interlocking sealing structure according to claim 3, characterized in that, The plug body also includes a plug portion located below the second body portion. The diameter of the plug portion is smaller than the diameter of the second body portion. The flow hole also includes a third hole segment located below the second hole segment. The diameter of the third hole segment is smaller than the diameter of the second hole segment. The plug portion is disposed within the third hole segment and extends out from the bottom end of the third hole segment.

5. The mating sealing structure according to claim 4, characterized in that, The connecting holes include a first through hole, a second through hole, and a third through hole from top to bottom. The diameter of the second through hole is smaller than the diameter of the first through hole, and the diameter of the second through hole is also smaller than the diameter of the third through hole. The plug is used to insert into the first through hole.

6. The interlocking sealing structure according to claim 5, characterized in that, The plug assembly includes a plug body and a second sealing ring. The plug body also has a second groove, which is arranged circumferentially around the plug body. The second sealing ring is disposed in the second groove and is used to seal the connection between the second through hole and the third through hole.

7. The mating sealing structure according to claim 6, characterized in that, The plug body includes a first plug and a second plug. The diameter of the first plug is smaller than the diameter of the second plug. The first plug is disposed in the first through hole and the second through hole, the second plug is disposed in the third through hole, and the second groove is disposed between the first plug and the second plug.

8. The mating sealing structure according to claim 1, characterized in that, The male pin assembly includes a male end pin and a first connector. The male end pin has a flow hole inside, and the first connector is disposed in the flow hole. The first connector and the flow hole are connected.

9. The interlocking sealing structure according to claim 1, characterized in that, The female pin assembly includes a female end pin and a second connector. The female end pin has a connection hole inside, and the second connector is partially disposed in the connection hole. The second connector and the connection hole are connected.

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