Quick plug structure

Abstract

This utility model discloses a quick-connect structure, including a female plug, a male plug, and a U-shaped retaining spring. The female plug and male plug are tubular. The U-shaped retaining spring is made of 304SUS stainless steel and has a Teflon coating. The U-shaped retaining spring includes two retaining arms. One end of the female plug has a connector with side openings on both sides. The middle portions of the retaining arms extend into the female plug through the side openings. The male plug has an annular groove into which the retaining arms engage. This quick-connect structure, using a U-shaped retaining spring and an annular groove, enables rapid insertion and removal of the female plug and male plug without the need for twisting, significantly improving connection efficiency. The 304SUS stainless steel U-shaped retaining spring with Teflon coating increases its lubricity, ensuring smooth insertion and removal of the female plug and male plug, reducing the occurrence of forced insertion and removal, and significantly enhancing wear resistance and corrosion resistance, thus extending service life.

Description

Technical Field

[0001] This utility model belongs to the field of quick-connect structure technology, specifically relating to quick-connect structures. Background Technology

[0002] Tubular plugs are widely used in fluid transport and electrical connections. Traditional plug connections often employ threaded tightening or snap-fit ​​methods. The former requires multiple rotations to secure the plug, making it cumbersome and inefficient; while the latter simplifies operation, ordinary snap-fits (spring clips) are prone to material fatigue, leading to weakened clamping force and loosening after prolonged use. Using stronger spring clips can maintain stable clamping force over a longer period, but during plug insertion, the spring clip may not expand under stress, preventing the female plug from being inserted into the female plug. Forcing the plug in with increased force can cause irreversible deformation of the spring clip or damage to the plug itself, making it impossible to remove and reinsert. Quick-connect mechanisms are also prone to leakage under high pressure or vibration environments. Utility Model Content

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a quick-connect structure, including a female plug, a female plug, and a U-shaped retaining spring. The female plug and the female plug are tubular. The U-shaped retaining spring is made of 304SUS stainless steel and has a Teflon coating on its surface. The U-shaped retaining spring includes two retaining arms. One end of the female plug has a socket for inserting the female plug. The two sides of the socket have side openings that connect to the inside of the female plug. The middle parts of the retaining arms pass through the side openings and extend into the inside of the female plug. The female plug has an annular groove, and the retaining arms engage with the annular groove.

[0004] As a preferred embodiment of the above technical solution, the female plug is provided with a limiting platform inside for blocking the female plug.

[0005] As a preferred embodiment of the above technical solution, a sealing ring is provided between the female plug and the female plug, and an annular groove for the sealing ring to be embedded is provided inside the female plug, the annular groove being located between the limiting platform and the side opening.

[0006] As a preferred embodiment of the above technical solution, the sub-plug is provided with a tapered portion, which includes a large-diameter end and a small-diameter end, with the large-diameter end located between the small-diameter end and the annular groove.

[0007] As a preferred embodiment of the above technical solution, the female plug has a tapered surface inside that fits against the tapered portion.

[0008] As a preferred embodiment of the above technical solution, the two arms of the U-shaped retaining ring are connected by a connecting part, and a feeding part is provided in the middle of the connecting part.

[0009] As a preferred embodiment of the above technical solution, one end of the clamping arm is provided with a bent portion, the bent portion being parallel to the axial direction of the female plug, and the bent portions of the two clamping arms are bent in opposite directions.

[0010] As a preferred embodiment of the above technical solution, the female plug is provided with two protective grooves, and the bent portion is located in the protective grooves respectively.

[0011] The beneficial effects of this utility model are as follows: The quick-connect structure of this utility model uses a U-shaped retaining ring and an annular retaining groove to achieve quick insertion and removal of the male and female plugs without the need for twisting, which greatly improves the docking efficiency; the U-shaped retaining ring made of 304SUS stainless steel with a Teflon coating increases the lubricity of the U-shaped retaining ring, making the insertion and removal process of the male and female plugs smooth, reducing the friction between the retaining ring and the male plug, and improving the assembly process of the male and female plugs. This avoids the difficulty of assembly caused by the beveled surface of the male connector and retaining ring being worn and deformed during the quick insertion process, reducing the occurrence of hard insertion and removal, and significantly enhancing wear resistance and corrosion resistance, thus extending the service life. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model; Figure 3 This is a cross-sectional structural diagram of the present invention from another angle. Detailed Implementation

[0013] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] like Figure 1-3 As shown, the quick-connect structure includes a female plug 1, a female plug 2, and a U-shaped retaining ring 3. The female plug 1 and female plug 2 are tubular. The U-shaped retaining ring 3 is made of 304SUS stainless steel and has a Teflon coating. The U-shaped retaining ring 3 includes two retaining arms 4. One end of the female plug 1 has a connector 5 for inserting the female plug 2. The connector 5 has side openings 6 on both sides that connect to the interior of the female plug 1. The middle portions of the retaining arms 4 extend through the side openings 6 into the interior of the female plug 1. The female plug 2 has an annular groove 7 into which the retaining arms 4 engage. After the female plug 2 is inserted into the female plug 1 through the connector 5, the two retaining arms 4 of the U-shaped retaining ring 3 engage in the annular groove 7, preventing the female plug 2 from detaching from the female plug 1. The U-shaped retaining ring 3, made of 304SUS stainless steel, has high strength and good toughness. After the U-shaped retainer 3 is coated with Teflon, the surface is smooth. The quick-connect structure allows the U-shaped retainer 3 to expand and contract more smoothly during insertion and removal, preventing jamming and avoiding excessive force during insertion and removal that could cause deformation or damage to various components.

[0017] Furthermore, the female plug 1 is provided with a limiting platform 8 for blocking the female plug 2. The limiting platform 8 restricts the position of the female plug 2 inside the female plug 1.

[0018] Furthermore, a sealing ring 9 is provided between the female plug 1 and the female plug 2, and an annular groove 10 is provided inside the female plug 1 for the sealing ring 9 to be embedded. The annular groove 10 is located between the limiting platform 8 and the side opening 6. The sealing ring 9 improves the sealing performance between the female plug 1 and the female plug 2.

[0019] Furthermore, the sub-plug 2 is provided with a tapered portion 11, which includes a large-diameter end 12 and a small-diameter end 13. The large-diameter end 12 is located between the small-diameter end 13 and the annular groove 7. The diameter of the small-diameter end 13 is smaller than the distance between the two retaining arms 4. During the process of inserting the sub-plug 2 into the female plug 1, the tapered portion 11 gradually expands the retaining arms 4, and finally makes the retaining arms 4 engage in the annular groove 7.

[0020] Furthermore, the female plug 1 has a conical surface 14 inside that fits against the conical portion 11. The conical surface 14 limits the conical portion 11, preventing the female plug 2 from being over-inserted into the female plug 1.

[0021] Furthermore, the two retaining arms 4 of the U-shaped retaining spring 3 are connected by a connecting part 15, and a lifting part 16 is provided in the middle of the connecting part 15. The lifting part 16 facilitates the removal of the U-shaped retaining spring 3 using tools.

[0022] Furthermore, one end of the clamping arm 4 is provided with a bent portion 17, which is parallel to the axial direction of the female plug 1, and the bending directions of the bent portions 17 of the two clamping arms 4 are opposite. The bent portion 17 provides an action point for tools (pliers, etc.), and the U-shaped retaining spring 3 can be easily removed by using the tool to clamp the bent portion 17.

[0023] Furthermore, the female plug 1 is provided with two protective grooves 18, and the bent portions 17 are respectively located in the protective grooves 18. The protective grooves 18 protect the bent portions 17, preventing the U-shaped retaining spring 3 from falling off due to other external forces during use, thus improving the stability of the quick-connect structure. Limiting grooves can also be provided on both sides of the female plug 1, with a smooth transition between the limiting grooves and the protective grooves 18. By clamping the supply part 16 with a tool, the U-shaped retaining spring 3 can be moved radially a certain distance. By changing the diameter, the two retaining arms 4 of the U-shaped retaining spring 3 expand outward at a certain angle, and the retaining arms 4 disengage from the annular retaining groove 7. In this way, the female plug 2 can be pulled out without completely disassembling the U-shaped retaining spring 3. After re-inserting the female plug 2, pushing the U-shaped retaining spring 3 forward will complete the connection between the female plug 2 and the female plug 1 again.

[0024] It is worth mentioning that the technical features such as 304SUS stainless steel and Teflon coating involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control methods and spatial arrangement of these technical features can be adopted by conventional choices in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated in detail.

[0025] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experimentation on the basis of the prior art should be within the scope of protection defined by the claims.

Claims

1. A quick plug structure, characterized by, It includes a female plug, a female plug, and a U-shaped retaining spring. The female plug and the female plug are both tubular. The U-shaped retaining spring is made of 304SUS stainless steel and has a Teflon coating. The U-shaped retaining spring includes two retaining arms. One end of the female plug has a socket for inserting the female plug. The two sides of the socket have side openings that connect to the inside of the female plug. The middle parts of the retaining arms extend into the inside of the female plug through the side openings. The female plug has an annular groove into which the retaining arms engage. The inside of the female plug has a limiting platform for blocking the female plug. The two retaining arms of the U-shaped retaining spring are connected by a connecting part, and the middle of the connecting part has a starting part.

2. The quick-connect structure as described in claim 1, characterized in that, A sealing ring is provided between the female plug and the female plug. The female plug has an annular groove inside for the sealing ring to be embedded. The annular groove is located between the limiting platform and the side opening.

3. The quick connect structure of claim 2, wherein, The sub-plug is provided with a tapered portion, which includes a large-diameter end and a small-diameter end, with the large-diameter end located between the small-diameter end and the annular groove.

4. The quick connect structure of claim 3, wherein, The female plug has a tapered surface inside that fits into the tapered part.

5. The quick connect structure of claim 1, wherein, One end of each clamp arm is provided with a bent portion, which is parallel to the axial direction of the female plug, and the bending directions of the two clamp arms are opposite.

6. The quick-connect structure as described in claim 5, characterized in that, The female plug is provided with two protective grooves, and the bent part is located in the protective grooves respectively.

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