A pipe assembly
By directly bonding protective sheets to the quick-connect fittings of the piping assembly, and utilizing the combined structure of the base layer, waterproof layer, and adhesive layer, the problems of cumbersome assembly and high cost in the existing technology are solved, achieving a simple, economical, and reliable sealing and protection effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUTCHINSON (WUHAN) AUTOMOTIVE RUBBER PRODUCTS CO LTD
- Filing Date
- 2025-09-23
- Publication Date
- 2026-08-04
AI Technical Summary
The existing quick-connector protective structure of pipeline assemblies is cumbersome to assemble and costly, making it difficult to achieve efficient sealing and protection.
The protective sheet is directly bonded to the quick-connect end face to seal the connector. The combination structure of the base layer, waterproof layer and adhesive layer achieves a seal and protection without the need for screwing, reducing assembly complexity and cost.
It simplifies the assembly process, improves operational efficiency, enhances protective performance, reduces costs, and the protective sheet is small in size, environmentally friendly, and reliable.
Smart Images

Figure CN224592935U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive parts technology, and in particular relates to a pipeline assembly. Background Technology
[0002] In automotive and industrial equipment, piping assemblies are widely used to transport media such as gases and liquids. Their sealing and protective performance has a significant impact on the stability and safety of system operation. To prevent dust ingress, protective structures are usually installed at quick-connect fittings when unconnected. In existing technology, dust caps are commonly used to protect quick-connect fittings. Dust caps are usually made of plastic or metal and their internal threaded structure mates with the external thread of the quick-connect fitting. Tightening them in this way achieves the functions of dust prevention and leak prevention. However, such piping assemblies are cumbersome to assemble and costly. Utility Model Content
[0003] This utility model provides a pipeline assembly that is simple to assemble and low in cost.
[0004] This utility model embodiment provides a pipeline assembly, which includes a pipeline, a quick-connect connector, and a protective sheet. One end of the quick-connect connector is connected to the pipeline, and the other end has a quick-connect end face with an insertion interface. The protective sheet is adhered to the quick-connect end face and seals the insertion interface.
[0005] Furthermore, the projection of the protective sheet along its thickness direction coincides with the projection of the quick-connect end face; or the projection of the protective sheet along its thickness direction exceeds the projection of the quick-connect end face.
[0006] Furthermore, the protective sheet includes: a substrate layer, the substrate layer including a first surface and a second surface opposite to each other along its thickness direction, the first surface being bonded to the quick-connect end face and sealing the connector; and a waterproof layer connected to the second surface.
[0007] Furthermore, the waterproof layer is a polyethylene terephthalate film or a polyvinyl chloride film, wherein the thickness of the polyethylene terephthalate film or the polyvinyl chloride film is greater than or equal to 25 μm and less than or equal to 200 μm.
[0008] Furthermore, the protective layer is kraft paper, and the thickness of the kraft paper is greater than or equal to 80 μm and less than or equal to 300 μm.
[0009] Furthermore, the substrate layer is an adhesive layer.
[0010] Furthermore, the adhesive layer is an acrylic pressure-sensitive adhesive layer with a thickness greater than or equal to 50 μm and less than or equal to 150 μm; or the adhesive layer is a rubber-type pressure-sensitive adhesive layer with a thickness greater than or equal to 25 μm and less than or equal to 200 μm.
[0011] Furthermore, the first surface of the substrate layer is bonded with a first adhesive layer, and the first surface is bonded to the quick-connect end face through the first adhesive layer.
[0012] Furthermore, the waterproof layer is bonded to the second surface.
[0013] Furthermore, the substrate layer includes a main body and a handle. The main body is bonded to the quick-connect end face and closes the connector. One end of the handle is connected to the main body, and the other end extends away from the main body.
[0014] This utility model provides a piping assembly, which includes a pipe, a quick-connect fitting, and a protective sheet. One end of the quick-connect fitting is connected to the pipe, and the other end has a quick-connect face with a connector. The protective sheet is adhered to the quick-connect face and seals the connector. The protective sheet is bonded to the quick-connect face without screwing, resulting in high operational efficiency and saving assembly time. The protective sheet seals the connector, preventing contaminants such as oil and sand from entering the pipe, providing reliable protection. The protective sheet is small, low-cost, and environmentally friendly. Therefore, the piping assembly is simple to assemble, low-cost, and economical. Attached Figure Description
[0015] Figure 1 An exploded view of the piping assembly provided in some embodiments of this application;
[0016] Figure 2 This is a schematic diagram of the piping assembly provided in some embodiments of this application.
[0017] Explanation of reference numerals in the attached figures
[0018] 1. Quick-connect connector; 2. Protective sheet; 3. Pipeline; 10. Quick-connect end face; 11. Socket; 12. Connector body; 13. First connector; 14. Second connector; 20. Substrate layer; 21. Waterproof layer; 201. Main body; 202. Handheld part; 203. First surface; 204. Second surface. Detailed Implementation
[0019] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.
[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.
[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0022] In the description of the embodiments of this application, the technical terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated, or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.
[0023] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.
[0024] In automotive and industrial equipment, piping assemblies are widely used to transport media such as gases and liquids. Their sealing and protective performance has a significant impact on the stability and safety of system operation. To prevent dust ingress, protective structures are usually installed at quick-connect fittings when unconnected. In existing technology, dust caps are commonly used to protect quick-connect fittings. Dust caps are usually made of plastic or metal and their internal threaded structure mates with the external thread of the quick-connect fitting. Tightening them in this way achieves the functions of dust prevention and leak prevention. However, such piping assemblies are cumbersome to assemble and costly.
[0025] Therefore, this application provides a piping assembly that is simple to assemble and has low cost.
[0026] Below, refer to Figure 1 and Figure 2 Some embodiments of this application will be described in detail.
[0027] Figure 1 Exploded views of protective sheets for piping assemblies provided in some embodiments of this application; Figure 2 This is a schematic diagram of the piping assembly provided in some embodiments of this application.
[0028] This application provides a piping assembly, such as Figure 1 and Figure 2 As shown, the piping assembly includes a pipe 3, a quick-connect fitting 1, and a protective sheet 2. One end of the quick-connect fitting 1 is connected to the pipe 3, and the other end has a quick-connect end face 10, which has a connector 11. The protective sheet 2 is bonded to the quick-connect end face 10 and seals the connector 11.
[0029] For example, the quick-connect connector 1 includes a connector body 12 and a first connector head 13 connected to the connector body 12, with a plug interface 11 disposed on the first connector head 13.
[0030] For example, the connector body 12 is integrally formed with the first connector 13.
[0031] For example, the quick-connect fitting 1 also includes a second connector 14 connected to the fitting body 12, and the second connector 14 is sealed to the conduit 3.
[0032] For example, the connector body 12 and the second connector 14 are integrally formed.
[0033] For example, an anti-detachment component is provided between the second connector 14 and the pipe 3. The anti-detachment component reduces the risk that the pipe 3 will come off or loosen at the second connector 14 when the pipe assembly is in operation.
[0034] For example, the anti-slip component can be, but is not limited to, a locking collar, a retaining ring, a retaining claw, and an O-ring.
[0035] The protective sheet 2 is directly bonded to the quick-connect end face 10 and seals the connector 11, eliminating the need for a threaded structure to achieve dustproofing and sealing of the pipeline assembly. This eliminates the need for tightening, resulting in high operational efficiency and saving assembly time. The protective sheet 2 seals the connector 11, preventing contaminants such as oil and sand from entering the pipeline 3, ensuring reliable protection. The protective sheet 2 is small, low-cost, and environmentally friendly. Therefore, the pipeline assembly is simple to assemble, low-cost, and economically viable.
[0036] In some embodiments of this application, such as Figure 2 As shown, the projection of the protective sheet 2 along its thickness direction coincides with the projection of the quick-connect end face 10; or the projection of the protective sheet 2 along its thickness direction exceeds the projection of the quick-connect end face 10.
[0037] It is understandable that the projection of the protective sheet 2 along its thickness direction coincides with the projection of the quick-connect end face 10, meaning that the area and shape of the protective sheet 2 are completely consistent with the quick-connect end face 10; the projection of the protective sheet 2 along its thickness direction exceeds the projection of the quick-connect end face 10, meaning that the entire quick-connect end face 10 coincides with a portion of the protective sheet 2 and the protective sheet 2 extends beyond the edge of the quick-connect end face 10.
[0038] Along the thickness direction of the protective sheet 2, the projection of the protective sheet 2 can be consistent with or slightly exceed the projection of the quick-connect end face 10, so that the protective sheet 2 can cover the insertion interface 11, reduce the sealing failure caused by size deviation, and further improve the protective performance.
[0039] In some embodiments of this application, such as Figure 1 As shown, the protective sheet 2 includes a base layer 20 and a waterproof layer 21. The base layer 20 includes a first surface 203 and a second surface 204 that are opposite to each other along its thickness direction. The first surface 203 is bonded to the quick-connect end face 10 and seals the insertion interface 11. The waterproof layer 21 is connected to the second surface 204.
[0040] For example, the substrate layer 20 itself has adhesive properties, that is, the first surface 203 has adhesive properties, and the first surface 203 uses its own adhesive properties to adhere to the quick-connect end face 10 and seal the connector 11.
[0041] For example, the substrate layer 20 itself does not have adhesive properties, that is, the first surface 203 does not have adhesive properties. By bonding an adhesive layer to the first surface 203, the first surface 203 is bonded to the quick-connect end face 10 through the adhesive layer and the insertion interface 11 is sealed. The adhesive layer can be formed by brushing or spraying adhesive.
[0042] The substrate layer 20 is a solid with a certain thickness, providing support. When the protective sheet 2 is bonded to the quick-connect end face 10 and seals the connector 11, providing protection for the piping assembly, it reduces the possibility of damage to the protective sheet 2 or partial detachment from the quick-connect end face 10 due to the impact of contaminants. The substrate layer 20 is used to bond and fix to the quick-connect end face 10, providing protection for the piping assembly. The second surface 204 is connected to a waterproof layer 21, which further enhances the protective effect in humid environments or in the presence of liquid contamination, preventing moisture from penetrating into the connector 11 and flowing into the piping 3.
[0043] In some embodiments of this application, such as Figure 1 As shown, the waterproof layer 21 is a polyethylene terephthalate film or a polyvinyl chloride film, and the thickness of the polyethylene terephthalate film or the polyvinyl chloride film is greater than or equal to 25 μm and less than or equal to 200 μm.
[0044] For example, the thickness of the polyethylene terephthalate film or the polyvinyl chloride film can be, but is not limited to, 25μm, 30μm, 35μm, 40μm, 45μm, 50μm, 55μm, 60μm, 65μm, 70μm, 75μm, 80μm, 85μm, 90μm, 100μm, 150μm, and 200μm.
[0045] Polyethylene terephthalate film or polyvinyl chloride film is a material with certain mechanical strength and corrosion resistance. Using such materials as waterproof layer 21, combined with a thickness range of 25μm to 200μm, can achieve waterproof performance while taking into account flexibility and fit, so as to adapt to the shape changes of quick-connect end face 10.
[0046] In some embodiments of this application, such as Figure 1 As shown, the protective layer is kraft paper with a thickness greater than or equal to 80 μm and less than or equal to 300 μm.
[0047] For example, the thickness of kraft paper can be, but is not limited to, 80μm, 85μm, 90μm, 95μm, 100μm, 110μm, 120μm, 130μm, 140μm, 150μm, 160μm, 170μm, 180μm, 190μm, 200μm, 250μm, and 300μm.
[0048] Using kraft paper as a protective layer is economical, provided that it meets certain strength and waterproof requirements. Kraft paper is widely available and inexpensive.
[0049] In some embodiments of this application, such as Figure 1 As shown, the substrate layer 20 is an adhesive layer.
[0050] The adhesive layer serves as the base layer 20, meaning that the base layer 20 itself has adhesive properties. This allows both the first and second surfaces of the base layer 20 to have adhesive properties, making the bond between the protective sheet 2 and the quick-connect end face 10 stronger and less prone to falling off. This improves the stability of the overall structure and enhances the protection performance of the pipeline assembly.
[0051] In some embodiments of this application, such as Figure 1 As shown, the adhesive layer is an acrylic pressure-sensitive adhesive layer with a thickness greater than or equal to 50 μm and less than or equal to 150 μm; or the adhesive layer is a rubber-type pressure-sensitive adhesive layer with a thickness greater than or equal to 25 μm and less than or equal to 200 μm.
[0052] For example, the thickness of the acrylic pressure-sensitive adhesive layer can be, but is not limited to, 50μm, 55μm, 60μm, 65μm, 70μm, 75μm, 80μm, 85μm, 90μm, 100μm, and 150μm; the thickness of the rubber-type pressure-sensitive adhesive layer can be, but is not limited to, 25μm, 30μm, 35μm, 40μm, 45μm, 50μm, 55μm, 60μm, 65μm, 70μm, 75μm, 80μm, 85μm, 90μm, 100μm, 150μm, and 200μm.
[0053] Adjust the bonding strength and flexibility according to the actual usage scenario, using either acrylic pressure-sensitive adhesive or rubber-based pressure-sensitive adhesive to adapt to different needs and environmental conditions. For example, if the piping assembly needs to be used outdoors for a long time or is UV resistant, an acrylic pressure-sensitive adhesive can be used. If a higher initial tack is required to prevent the adhesive layer from loosening or falling off at the quick-connect end face 10, a rubber-based pressure-sensitive adhesive can be used. When the protective sheet 2 is peeled off, the adhesive layer can be cleanly peeled off at the quick-connect end face 10 without leaving any residue, reducing the probability of internal contamination of the quick-connect connector 1.
[0054] In some embodiments of this application, such as Figure 1 As shown, a first adhesive layer is bonded to the first surface 203 of the substrate layer 20, and the first surface 203 is bonded to the quick-connect end face 10 through the first adhesive layer.
[0055] For example, the substrate layer 20 itself does not have initial adhesion. The first adhesive layer is applied to the first surface 203 by brushing or spraying, so that the first surface 203 is bonded to the quick-connect end face 10 through the first adhesive layer.
[0056] By providing a first adhesive layer between the substrate layer 20 and the quick-connect end face 10, the adhesion performance between the substrate layer 20 and the quick-connect end face 10 can be improved, reducing the occurrence of delamination after long-term use, extending the service life of the substrate layer 20, and thus improving the protection performance of the pipeline assembly.
[0057] In some embodiments of this application, such as Figure 1 As shown, the waterproof layer 21 is bonded to the second surface 204.
[0058] For example, the substrate layer 20 itself has adhesive properties, that is, the second surface 204 has adhesive properties, and the second surface 204 is bonded to the waterproof layer 21 by its own adhesiveness.
[0059] For example, the substrate layer 20 itself does not have adhesive properties, that is, the second surface 204 does not have adhesive properties. By brushing or spraying an adhesive onto the second surface 204, the second surface 204 is bonded to the waterproof layer 21 by the adhesive.
[0060] The waterproof layer 21 is fixed to the base layer 20 by adhesive bonding, so that the layers of the protective sheet 2 are tightly bonded together to form a stable composite structure, which further enhances the protective effect and prevents moisture from penetrating into the insertion interface 11 and flowing into the pipe 3.
[0061] For example, the substrate layer 20 itself does not have adhesive properties, that is, the second surface 204 does not have adhesive properties. A waterproof layer 21 with waterproof properties is formed on the second surface 204 by brushing or spraying a waterproof material.
[0062] In some embodiments of this application, such as Figure 2 As shown, the substrate layer 20 includes a main body 201 and a handle 202. The main body 201 is bonded to the quick-connect end face 10 and closes the connector 11. One end of the handle 202 is connected to the main body 201, and the other end extends away from the main body 201.
[0063] For example, the shape of the main body 201 can be, but is not limited to, circular, strip, and square. No specific limitation is made here, as long as the insertion interface 11 is closed.
[0064] For example, the main body 201 shares a central axis with the quick-connect end face 10, and the outer circumference of the main body 201 extends beyond the outer circumference of the quick-connect end face 10 along the radial direction of the quick-connect end face 10.
[0065] For example, the main body 201 and the quick-connect end face 10 share a central axis, and along the radial direction of the quick-connect end face 10, the outer circumference of the main body 201 partially or completely overlaps with the outer circumference of the quick-connect end face 10.
[0066] For example, the handheld part 202 can be, but is not limited to, circular and polygonal.
[0067] For example, the two ends of the connector body 12 are respectively connected to the first connector 13 and the second connector 14. The connector body 12 is bent, and the central axis of the first connector 13 and the central axis of the second connector 14 intersect.
[0068] For example, the extension direction of the handle 202 is consistent with the extension direction of the second connector 14, and the handle 202 extends toward the side of the first connector 13 where the second connector 14 is provided. In this way, the second connector 14 can play a certain blocking role on the handle 202 in the direction along the central axis of the first connector 13, reducing the probability that the handle 202 will be accidentally touched and thus loosened and detached.
[0069] For example, a portion of the waterproof layer 21 covers the main body 201, and another portion of the waterproof layer 21 covers the handheld part 202. The waterproof layer 21 is provided on both the main body 201 and the handheld part 202, which can improve the protection and reduce the probability of contamination of the pipeline assembly due to damage to the handheld part 202.
[0070] For example, the extension direction of the hand-held part 202 is consistent with the direction of the central axis of the insertion interface 11. The hand-held part 202 provided in this direction can facilitate the user to operate, such as tearing, peeling or removing the main body part 201.
[0071] For example, the extension direction of the hand-held part 202 is at an angle to the direction of the central axis of the insertion interface 11. The hand-held part 202, which is provided in this direction, makes it convenient for the user to operate, such as tearing, peeling or removing the main body part 201.
[0072] The handle 202 extends from one side of the main body 201, facilitating user operation such as tearing, peeling, or removing the main body 201. Since the handle 202 does not participate in the sealing function of the connector 11, it is thin and flexible, making it easy to grip and pull. The length of the handle 202 can be adjusted according to the usage scenario. For example, in space-constrained environments, the length of the handle 202 can be appropriately shortened; while in situations where frequent replacement of the main body 201 is required, the length of the handle 202 can be appropriately lengthened for ease of operation.
[0073] For example, the waterproof layer 21 may be printed with visible information, including but not limited to installation date, airtightness parameters, quick connector 1 model, brand logo, QR code, etc.
[0074] For example, the protective sheet 2 also includes a release layer, which is used to protect the base layer 20. When the protective sheet 2 is not bonded to the quick-connect end face 10, the release layer is bonded to the base layer 20. The process of using the protective sheet 2 is to peel off the release layer and bond the first surface 203 of the base layer 20 to the quick-connect end face 10.
[0075] For example, the release layer is glassine release paper or polyethylene release film.
[0076] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A plumbing assembly, comprising: include: Piping; A quick-connect connector, one end of which is connected to the pipeline, and the other end has a quick-connect face with a connector interface; A protective sheet is bonded to the quick-connect end face and seals the connector.
2. The plumbing assembly of claim 1, wherein, The projection of the protective sheet along its thickness direction coincides with the projection of the quick-connect end face; or The projection of the protective sheet along its thickness direction exceeds the projection of the quick-connect end face.
3. The plumbing assembly of claim 1, wherein, The protective sheet includes: A substrate layer, the substrate layer including a first surface and a second surface opposite to each other along its thickness direction, the first surface being bonded to the quick-connect end face and sealing the connector; A waterproof layer is attached to the second surface.
4. The plumbing assembly of claim 3, wherein, The waterproof layer is a polyethylene terephthalate film or a polyvinyl chloride film, and the thickness of the polyethylene terephthalate film or polyvinyl chloride film is greater than or equal to 25 μm and less than or equal to 200 μm.
5. The plumbing assembly of claim 3, wherein, The waterproof layer is kraft paper, and the thickness of the kraft paper is greater than or equal to 80 μm and less than or equal to 300 μm.
6. The plumbing assembly of claim 3, wherein, The substrate layer is an adhesive layer.
7. The plumbing assembly of claim 6, wherein, The adhesive layer is an acrylic pressure-sensitive adhesive layer, and the thickness of the acrylic pressure-sensitive adhesive layer is greater than or equal to 50 μm and less than or equal to 150 μm; or The adhesive layer is a rubber-type pressure-sensitive adhesive layer, and the thickness of the rubber-type pressure-sensitive adhesive layer is greater than or equal to 25 μm and less than or equal to 200 μm.
8. The plumbing assembly of claim 3, wherein, The first surface of the substrate layer is bonded with a first adhesive layer, and the first surface is bonded to the quick-connect end face through the first adhesive layer.
9. The plumbing assembly of claim 3, wherein, The waterproof layer is bonded to the second surface.
10. The plumbing assembly of any one of claims 3 to 9, wherein, The substrate layer includes a main body and a handle. The main body is bonded to the quick-connect end face and closes the connector. One end of the handle is connected to the main body, and the other end extends away from the main body.