Wear-resistant anti-wrinkle automobile cooling pipe
By designing the inner and outer layers and incorporating spiral guide channels, the problem of wear and wrinkling of automotive cooling pipes under high temperature and pressure is solved, resulting in improved wear and wrinkle resistance, extended service life, reduced weight, compliance with lightweight design, and improved coolant flow.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN KAITAI AUTO PARTS CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-04-17
AI Technical Summary
Existing automotive cooling pipes are prone to wear and wrinkling under high temperature and high pressure environments, affecting coolant flow and the stability of the cooling system. Existing solutions are costly, increase weight, or require frequent maintenance.
It adopts an inner and outer layer structure. The inner layer is made of high-strength nylon material and the outer layer is made of high-performance modified polyurethane material. The inner cavity of the inner layer is filled with nano-sized silica particles and a spiral guide groove is set in the inner cavity. The outer edge of the outer layer is covered with a protective layer and is bonded with hot melt adhesive.
It improves the wear resistance and wrinkle resistance of cooling pipes, extends service life, reduces production costs, reduces weight, meets lightweight requirements, improves coolant flow, and reduces energy loss.
Smart Images

Figure CN224135365U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive cooling pipe technology, and more particularly to a wear-resistant and wrinkle-resistant automotive cooling pipe. Background Technology
[0002] Currently, automotive cooling system pipes are mostly made of rubber or plastic. While these materials offer good flexibility and sealing performance, they are prone to wear and wrinkling over long-term use, especially in high-temperature and high-pressure environments. This not only affects the normal flow of coolant but can also lead to cooling system failure, ultimately impacting the safe operation of the entire vehicle.
[0003] To address the above problems, several common existing solutions include:
[0004] Cooling pipes are made using polymer composite materials, which have high heat resistance and wear resistance, but are also expensive and difficult to process.
[0005] Adding a layer of metal mesh or fiber reinforcement inside traditional rubber or plastic cooling pipes can improve their strength and durability, but this increases the overall weight of the cooling pipe and is not conducive to lightweight design.
[0006] By improving the production process and applying a protective coating to the surface of the cooling pipe, the aging rate can be effectively slowed down, but the protective effect is limited and it is difficult to completely solve the problem.
[0007] While the above solutions alleviate the wear and wrinkling problems of cooling pipes to some extent, they still have significant shortcomings. The high cost of polymer composite materials limits their widespread application, and the metal mesh or fiber reinforcement layers increase the weight of the cooling pipes, which is not in line with the trend of lightweighting in modern automobiles. The protective coating is not durable and requires regular maintenance, which increases the later maintenance costs.
[0008] Therefore, this application proposes a wear-resistant and wrinkle-resistant automotive cooling pipe to solve the above-mentioned problems. Utility Model Content
[0009] In view of the shortcomings of the prior art, this utility model provides a wear-resistant and wrinkle-resistant automotive cooling pipe, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.
[0010] To achieve the above objectives, this application adopts the following technical solution: a wear-resistant and wrinkle-resistant automotive cooling pipe, comprising an inner layer, an outer layer bonded to the outer edge of the inner layer by hot melt adhesive, the inner cavity of the inner layer being filled with nano-sized silica particles, and a spiral guide groove being formed in the inner cavity of the inner layer.
[0011] In a preferred embodiment, connector one and connector two are respectively installed at both ends of the inner layer.
[0012] By adopting the above technical solution, it is easy to connect with other cooling system components.
[0013] In a preferred embodiment, a protective layer is provided along the outer edge of the outer layer, and the protective layer is made of black and yellow bipolar yellow jacket material.
[0014] By adopting the above technical solution, protection can be formed on the outer edge of the outer layer, thereby ensuring its durability in different environments.
[0015] In a preferred embodiment, the inner layer is made of high-strength nylon material, the outer layer is made of high-performance modified polyurethane material, the outer layer has a thickness of 1.5 mm, and the inner layer has a thickness of 0.8 mm.
[0016] By adopting the above technical solution, the inner layer can withstand the pressure and corrosion of the liquid, ensuring the smooth flow of coolant, while the high-performance modified polyurethane material of the outer layer protects the pipe body from external physical damage and chemical corrosion, extending the service life of the pipe body.
[0017] In a preferred embodiment, the outer layer may be made of fluororubber or high-performance modified polyurethane material in different colors.
[0018] By adopting the above technical solutions, better oil resistance and chemical resistance can be obtained, and high-performance modified polyurethane materials of different colors can meet different appearance requirements.
[0019] In a preferred embodiment, the hot melt adhesive is a two-component epoxy resin adhesive with a curing time of no more than 3 minutes and a shear strength of no less than 15 MPa.
[0020] By adopting the above technical solution, it is possible to ensure that the hot melt adhesive is completely cured and that the inner and outer layers are tightly bonded together, preventing them from easily coming apart.
[0021] The beneficial effects of this application are:
[0022] 1. This wear-resistant and wrinkle-resistant automotive cooling pipe significantly improves the wear resistance and wrinkle resistance of the cooling pipe by setting inner and outer layers, extending its service life, reducing production costs, achieving an economical and efficient design, reducing the weight of the cooling pipe, meeting the requirements of automotive lightweighting, avoiding complex production processes, and simplifying production and maintenance procedures.
[0023] 2. This wear-resistant and wrinkle-resistant automotive cooling pipe improves the flowability of the coolant and reduces energy loss caused by vortices by setting spiral guide grooves. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of this application;
[0025] Figure 2 This is a partial structural diagram of this application;
[0026] Figure 3 This is a partially enlarged cross-sectional structural diagram of this application;
[0027] Figure 4 This is a schematic diagram of the cross-sectional spiral guide channel structure of this application.
[0028] The labels in the diagram are: 1. Inner layer; 2. Hot melt adhesive; 3. Outer layer; 4. Nanoscale silica particles; 5. Protective layer; 6. Spiral guide groove; 7. Connector 1; 8. Connector 2. Detailed Implementation
[0029] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0030] Reference Figure 1-4 A wear-resistant and wrinkle-resistant automotive cooling pipe includes an inner layer 1, an outer layer 3 bonded to the outer edge of the inner layer 1 by hot melt adhesive 2, the inner cavity of the inner layer 1 being filled with nano-sized silica particles 4, and a spiral guide groove 6 formed in the inner cavity of the inner layer 1.
[0031] See Figure 1 and Figure 2 The inner layer 1 has connector 7 and connector 8 installed at both ends, which facilitates connection with other cooling system components.
[0032] See Figure 1 - Figure 3 The outer edge of the outer layer 3 is fitted with a protective layer 5, which is made of black and yellow bipolar jacket material, so that it can protect the outer edge of the outer layer 3 and thus ensure its durability in different environments.
[0033] See Figure 3 and Figure 4 The inner layer 1 is made of high-strength nylon material, and the outer layer 3 is made of high-performance modified polyurethane material. The outer layer 3 has a thickness of 1.5mm, and the inner layer 1 has a thickness of 0.8mm. This allows the inner layer 1 to withstand the pressure and corrosion of the liquid, ensuring the smooth flow of coolant. The high-performance modified polyurethane material of the outer layer 3 protects the pipe body from external physical damage and chemical corrosion, extending the service life of the pipe body.
[0034] See Figure 3The outer layer 3 can be made of fluororubber or high-performance modified polyurethane material in different colors, which can achieve better oil resistance and chemical resistance, and the high-performance modified polyurethane material in different colors can meet different appearance requirements.
[0035] See Figure 3 Hot melt adhesive 2 is a two-component epoxy resin adhesive with a curing time of no more than 3 minutes and a shear strength of no less than 15MPa, which ensures that hot melt adhesive 2 is completely cured and that the inner layer 1 and the outer layer 3 are tightly bonded together, preventing them from easily detaching.
[0036] Working principle: When using this device, first prepare the required inner layer 1, hot melt adhesive 2, and outer layer 3. Then, cut the outer layer 3 into strips according to the predetermined size to serve as the outer layer of the cooling tube. At the same time, cut the inner layer 1 into strips of the same length to serve as the inner layer of the cooling tube. Apply hot melt adhesive 2 evenly along the outer edge of the hot melt adhesive 2 to ensure that the hot melt adhesive 2 covers the entire contact surface of the inner layer 1. Then, attach the outer layer 3 to the outside of the inner layer 1 and apply appropriate pressure to make the inner layer 1 and outer layer 3 tightly bonded. Then, place it in a constant temperature oven, set the temperature to 80℃, and heat and cure for 3 minutes to ensure that the hot melt adhesive 2 is completely cured. After the cooling tube cools naturally to room temperature, check the bonding quality to ensure that there are no defects such as bubbles or cracks. Install standard connector 1 7 and connector 2 8 at both ends of the cooling tube to complete the final assembly.
[0037] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0039] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.
Claims
1. A wear-resistant and wrinkle-resistant automotive cooling pipe, comprising an inner layer (1), characterized in that, The outer edge of the inner layer (1) is bonded to the outer layer (3) by hot melt adhesive (2). The inner cavity of the inner layer (1) is filled with nano-sized silica particles (4). The inner cavity of the inner layer (1) is provided with a spiral guide groove (6).
2. A wrinkle and abrasion resistant automotive cooling tube according to claim 1, wherein The inner layer (1) is equipped with connector one (7) and connector two (8) at its two ends respectively.
3. A wrinkle and abrasion resistant automotive cooling tube according to claim 1, wherein The outer edge of the outer layer (3) is fitted with a protective layer (5), which is made of black and yellow double-layered yellow jacket material.
4. The wrinkle and abrasion resistant automotive cooling tube of claim 1, wherein, The inner layer (1) is made of high-strength nylon material, the outer layer (3) is made of high-performance modified polyurethane material, the outer layer (3) has a thickness of 1.5 mm, and the inner layer (1) has a thickness of 0.8 mm.
5. The wrinkle and abrasion resistant automotive cooling tube of claim 1, wherein, The outer layer (3) is made of fluororubber, and the outer layer (3) is made of high-performance modified polyurethane material of different colors.
6. A wrinkle and abrasion resistant automotive cooling tube according to claim 1, wherein The hot melt adhesive (2) is a two-component epoxy resin adhesive.