Double-seal quick-plug connector

Abstract

The utility model discloses a double-seal quick-plug connector which comprises a straight-through quick-plug connector body, a penetrating type installation through cavity is formed in the straight-through quick-plug connector body, a lining core is installed in the installation through cavity, and a clamping sleeve and a fixing sleeve are installed between the lining core and the inner wall of the installation through cavity. A double-sealing structure is formed among the lining core, the clamping sleeve and the fixing sleeve, and through the double-sealing structure, in the actual using process, efficient sealing is achieved, and the product performance is improved.

Description

Technical Field

[0001] The utility model relates to a double-sealed quick-plug connector. Background Art

[0002] The quick-connect connectors currently available on the market have the following shortcomings: after the nylon hose is inserted, a sealing ring is generally used on the surface of the hose, which sometimes causes leakage. Therefore, the applicant proposes further improvements on this basis and designs a lightweight and compact quick-connect connector to meet the market automotive industry's requirements for product weight reduction. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a double-sealed quick-plug connector, which reduces the cost and facilitates the connection, while improving the sealing performance of the product.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A double-seal quick-connect fitting, characterized in that it includes a straight-through quick-connect fitting body, a through-type installation cavity is formed in the straight-through quick-connect fitting body, a liner core is installed in the installation cavity, a ferrule and a fixing sleeve are installed between the liner core and the inner wall of the installation cavity, and a double-seal structure is formed between the liner core and the ferrule and the fixing sleeve.

[0006] As a further optimization for the utility model, the double sealing structure includes a first sealing ring and a second sealing ring, wherein the first sealing ring is located between the ferrule and the liner core, and the second sealing ring is located between the fixed sleeve and the liner core.

[0007] As a further optimization of the utility model, the liner core includes an inner support tube and an outer support tube which are integrally formed and connected at the ends, and a mounting cavity is formed between the inner support tube and the outer support tube, and the end of the outer support tube is convex outward to form a limiting ring.

[0008] As a further optimization of the utility model, the fixed sleeve includes a sleeve body, an undercut groove is formed on the outer wall of the sleeve body, a plurality of undercut teeth are formed on the inner wall of the sleeve body, a telescopic groove is formed between adjacent undercut teeth, and a first sealing groove is formed on the inner wall of the sleeve body.

[0009] As a further optimization of the utility model, one end of the straight-through quick-connect fitting body is a quick-connect end, and the other end is a threaded end, and a second sealing groove for installing an O-ring is formed at the bottom of the threaded end.

[0010] As a further optimization of the utility model, an outer conical surface and an inner conical surface are formed on the ferrule, and a shrinkage groove is provided on the ferrule.

[0011] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0012] The utility model includes a straight-through quick-connect fitting body, in which a through-type installation cavity is formed, a liner core is installed in the installation cavity, a ferrule and a fixing sleeve are installed between the liner core and the inner wall of the installation cavity, and a double sealing structure is formed between the liner core and the ferrule and the fixing sleeve. Through the double sealing structure, the utility model can achieve efficient sealing and improve product performance during actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] In the attached picture:

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the lining core of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the ferrule in the utility model.

[0018] Figure 4 It is a structural schematic diagram of the fixing sleeve in the utility model. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] like Figure 1-Figure 4 As shown, the utility model discloses a double-seal quick-plug connector, which is characterized by: comprising a straight-through quick-plug connector body 1, a through-type installation cavity 2 is formed in the straight-through quick-plug connector body 1, a liner 3 is installed in the installation cavity 2, a ferrule 4 and a fixing sleeve 5 are installed between the liner 3 and the inner wall of the installation cavity 2, and a double-seal structure is formed between the liner 3 and the ferrule 4 and the fixing sleeve 5. Through the double-seal structure, the utility model can achieve efficient sealing and improve product performance during actual use.

[0021] The double sealing structure of the utility model includes a first sealing ring and a second sealing ring 7, wherein the first sealing ring 6 is located between the ferrule 4 and the liner core 3, and the second sealing ring 7 is located between the fixed sleeve 5 and the liner core 3. The liner core 3 of the utility model includes an inner support tube 31 and an outer support tube 32 which are integrally formed and connected at the ends, and an installation cavity 33 is formed between the inner support tube 31 and the outer support tube 32, and the end of the outer support tube 32 is convex to form a limit ring 34. The fixed sleeve 5 of the utility model includes a sleeve body 51, and an undercut groove 52 is formed on the outer wall of the sleeve body 51, and a first sealing groove 53 is formed on the inner wall of the sleeve body 51 for placing the second sealing ring 7; at the same time, a plurality of undercut teeth 54 for buckling nylon tubes are formed on the inner wall, and a telescopic groove 55 is formed between adjacent undercut teeth. One end of the straight-through quick-connect fitting body 1 of the utility model is a quick-connect end 11, and the other end is a threaded end 12, and a second sealing groove 14 for installing an O-ring 13 is formed at the bottom of the threaded end 12. An outer conical surface 41 and an inner conical surface 42 are formed on the clamping sleeve 4 of the utility model, and a contraction groove 43 is provided on the clamping sleeve 4 to realize the buckle clamping of the inserted nylon tube.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A double-seal quick-connect fitting, characterized in that: It comprises a straight-through quick-connect fitting body, in which a through-type installation cavity is formed, a liner core is installed in the installation cavity, a ferrule and a fixing sleeve are installed between the liner core and the inner wall of the installation cavity, and a double sealing structure is formed between the liner core and the ferrule and the fixing sleeve.

2. A double seal quick-connect fitting according to claim 1, characterized in that: The double sealing structure includes a first sealing ring and a second sealing ring, wherein the first sealing ring is located between the ferrule and the liner core, and the second sealing ring is located between the fixed sleeve and the liner core.

3. The double-seal quick-connect fitting according to claim 1, characterized in that: The liner core comprises an inner support tube and an outer support tube which are integrally formed and connected at the ends, and a mounting cavity is formed between the inner support tube and the outer support tube, and the end of the outer support tube is convex outward to form a limiting ring.

4. The double-seal quick-connect connector according to claim 1, characterized in that: The fixing sleeve comprises a sleeve body, an undercut groove is formed on the outer wall of the sleeve body, a plurality of undercut teeth are formed on the inner wall of the sleeve body, a telescopic groove is formed between adjacent undercut teeth, and a first sealing groove is formed on the inner wall of the sleeve body.

5. The double-seal quick-connect fitting according to claim 1, characterized in that: One end of the straight-through quick-connect fitting body is a quick-connect end, and the other end is a threaded end. The bottom of the threaded end forms a second sealing groove for installing an O-ring.

6. The double-seal quick-connect connector according to claim 1, characterized in that: An outer conical surface and an inner conical surface are formed on the ferrule, and a shrinkage groove is provided on the ferrule.

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