Bundling pipe with sub-pipes convenient to replace
The multi-layer composite structure and elastic locking mechanism solve the problem of difficult replacement of bundled tubes in confined spaces, enabling rapid installation and stable fixation, improving the pressure resistance and light transmittance of the bundled tubes, and increasing maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-03-03
AI Technical Summary
Traditional cluster conduits are difficult to replace in confined spaces or complex wiring scenarios, resulting in low maintenance efficiency, and the sub-conduits may move radially within the main conduit.
It adopts a multi-layer composite structure design, combining an elastic locking mechanism and quick-release components, including convex strips, latches, and telescopic springs, to achieve rapid installation and stable fixation of the sub-tubes and prevent radial displacement.
It significantly reduces insertion and extraction resistance, improves pressure resistance and weather resistance, maintains light transmittance, facilitates fiber optic status monitoring, improves maintenance efficiency, and prevents sub-tube bending damage.
Smart Images

Figure CN223966742U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of bundle tube technology, specifically a bundle tube that facilitates the replacement of sub-tubes. Background Technology
[0002] With the rapid development of fiber optic communication networks, the demand for fiber optic cable bundles, as a core component for fiber optic cable protection, is increasing daily. Traditional bundles typically consist of multiple sub-tubes bundled together to house and protect optical fibers. In high-density cabling environments, bundles need to possess high compressive strength, flexibility, and ease of maintenance. Current mainstream technologies improve performance through improved materials (such as high-density polyethylene) or optimized structures (such as spiral winding designs), but the problem of difficult sub-tube replacement remains, especially in confined spaces or complex cabling scenarios, resulting in low maintenance efficiency.
[0003] An existing patent (publication number: CN213690045U) discloses a bundled tube for easy replacement of sub-tubes, comprising a main tube and sub-tubes inserted within the main tube; multiple sub-tubes are provided, each slidably connected inside the main tube, and the sub-tubes abut against each other. The sub-tubes and main tube are not manufactured as a single bundled tube, but are separated, and the sub-tubes can slide inside the main tube and be pulled out from it; the main tube includes an installation tube disposed inside and slidably connected to the sub-tubes, and a protective tube sleeved on the installation tube. In practical use, when one sub-tube in the main tube fails, maintenance personnel only need to pull the faulty sub-tube out of the main tube and insert a new sub-tube into the main tube, without needing to replace the entire bundled tube. This application saves bundled tube materials, avoids waste of intact sub-tubes, and is energy-saving and environmentally friendly.
[0004] The device in the aforementioned prior art replaces the sub-tube by inserting and withdrawing it. While this allows for convenient replacement, the sub-tube is only constrained by contact, which may lead to radial movement. To retain the advantage of quick replacement while ensuring the stability of the sub-tube installation, a bundled tube that facilitates sub-tube replacement is proposed. Utility Model Content
[0005] To address the shortcomings of existing technologies, this application provides a bundled tube that facilitates the replacement of sub-tubes. While retaining the advantage of quick replacement, it also balances ease of installation and long-term stability through an elastic locking mechanism and composite coating design.
[0006] To achieve the above objectives, this application provides the following technical solution: a bundled tube for easy replacement of sub-tubes, comprising a bundled tube body, wherein multiple sub-tube bodies are installed inside the bundled tube body, and a quick-release assembly is provided between the bundled tube body and the sub-tube bodies. The quick-release assembly includes a convex strip fixedly connected to the outer surface of the sub-tube body, one end of the convex strip being fixedly connected to a latch A, a concave groove adapted to the convex strip being opened on the inner side of the bundled tube body, a locking groove being opened at the end of the concave groove, a latch B being slidably sleeved on the inner wall of the locking groove, the latch B being adapted to the latch A, a pressing rod being fixedly connected to one side of the latch B, and two telescopic springs being fixedly connected to the other side of the latch B.
[0007] Through the above scheme, the multi-layer composite structure design of the bundle tube body can significantly reduce insertion and extraction resistance and improve pressure resistance, while also enhancing weather resistance and nighttime identification efficiency. The multi-layer composite structure design of the sub-tube body can reduce insertion and extraction resistance, maintain a certain light transmittance, and facilitate real-time monitoring of fiber optic status. The quick-release assembly can effectively prevent radial displacement of the sub-tube body. The quick-release assembly uses a convex strip and concave groove guide cooperation, combined with the elastic locking mechanism of A-lock A, B-lock B and telescopic spring, to achieve quick installation and stable fixation of the sub-tube body. The pressing rod and shim optimize the ease of operation. Finally, the positioning post enhances the overall structural stability, avoids bending damage, and is more practical.
[0008] Furthermore, the pressing rod is slidably sleeved in the inner wall of the locking groove, and a gasket is fixedly connected to the other end of the pressing rod.
[0009] The above solution allows for greater stability of the pressing rod when it is pressed by limiting its position. The shims can increase the contact area at one end of the pressing rod, thus facilitating the pressing of the rod.
[0010] Furthermore, the other end of each of the two telescopic springs is fixedly connected to the inner wall of the locking groove.
[0011] By defining the positional relationship of the telescopic springs, the elastic force generated by the deformation of the telescopic springs can be used to reset the position of the latch B, thereby facilitating the locking and unlocking of the convex strip and the latch A.
[0012] Furthermore, the inside of the bundle tube body is provided with positioning posts, and the multiple sub-tube bodies abut against the positioning posts.
[0013] The above scheme allows for a more stable locking and installation of multiple sub-tube bodies inside the bundle tube body via the positioning posts.
[0014] Furthermore, the bundle tube body comprises, from the outside to the inside, a reflective coating, a protective coating, a buffer layer, a bundle tube structural layer, and a bundle tube inner lining layer.
[0015] The above solution optimizes the internal structure of the bundle tube body, enabling it to achieve efficient insertion and removal, pressure resistance, weather resistance, and corrosion protection. It also significantly improves mechanical strength, environmental adaptability, and maintenance efficiency, making it suitable for various scenarios.
[0016] Furthermore, the inner lining of the bundle tube is made of high-density polyethylene, and the buffer layer is made of foamed silicone.
[0017] The above scheme limits the material of the inner liner of the bundle tube, which can provide an ultra-low friction surface to ensure smooth insertion and removal of the sub-tube body. It also limits the material of the buffer layer, which can absorb mechanical vibration energy and protect the internal optical fiber from impact damage, making it suitable for high vibration scenarios.
[0018] Furthermore, the sub-tube body comprises, from the outside to the inside, a hydrophobic nano-coating, a low-friction coating, a reinforcing layer, a sub-tube structural layer, and a sub-tube inner liner.
[0019] The above solution optimizes the internal structural components of the sub-tube body, enabling it to achieve ultra-low friction insertion and extraction, high tensile strength, and wear and moisture resistance, making it more practical.
[0020] Furthermore, the inner lining of the sub-tube is made of an ultra-smooth polymer, and the structural layer of the sub-tube is made of transparent polycarbonate or wear-resistant TPU.
[0021] The above solution reduces insertion and extraction resistance and protects the fiber surface by limiting the material of the inner lining of the sub-tube. By limiting the material of the sub-tube structural layer, it provides high impact resistance while maintaining high light transmittance, which facilitates real-time monitoring of fiber status and is suitable for high-frequency maintenance scenarios.
[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0023] This is a type of bundled tube that facilitates the replacement of sub-tubes. The bundled tube body adopts a multi-layer composite structure design, which can significantly reduce insertion and extraction resistance and improve pressure resistance. It also has a certain degree of enhanced weather resistance and nighttime identification efficiency. The multi-layer composite structure design of the sub-tube body can reduce insertion and extraction resistance, maintain a certain light transmittance, and facilitate real-time monitoring of fiber optic status. The quick-release component can effectively prevent radial displacement of the sub-tube body. The quick-release component uses a convex strip and concave groove guide cooperation, combined with the elastic locking mechanism of A-lock A, B-lock B and telescopic spring, to achieve quick installation and stable fixation of the sub-tube body. The pressing rod and shim optimize the convenience of operation. Finally, the positioning post enhances the overall structural stability and avoids bending damage, making it more practical. Attached Figure Description
[0024] Figure 1 This is a top view of the overall structure of this application.
[0025] Figure 2 This is a schematic cross-sectional view of the bundle tube body structure of this application;
[0026] Figure 3 This is a schematic cross-sectional view of the sub-tube body structure of this application.
[0027] Figure 4 This is a partial cross-sectional view of the structure of this application;
[0028] Figure 5 This is a schematic diagram of the internal structure of the bundle tube body in this application.
[0029] Figure 6 This is a schematic diagram of the internal structure of the sub-tube body in this application.
[0030] In the picture:
[0031] 1. Bundled tube body; 101. Reflective coating; 102. Protective coating; 103. Buffer layer; 104. Bundled tube structural layer; 105. Bundled tube inner liner; 2. Sub-tube body; 201. Hydrophobic nano-coating; 202. Low-friction coating; 203. Reinforcing layer; 204. Sub-tube structural layer; 205. Sub-tube inner liner; 3. Quick-release assembly; 301. Convex strip; 302. Lock A; 303. Concave groove; 304. Lock groove; 305. Lock B; 306. Press rod; 307. Telescopic spring; 308. Gasket; 4. Positioning post. Detailed Implementation
[0032] The technical solutions of 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0033] Please see Figure 1 , Figure 3 and Figure 5This embodiment provides a bundled tube for easy replacement of sub-tubes, comprising a bundled tube body 1, with multiple sub-tube bodies 2 installed inside the bundled tube body 1. A positioning post 4 is provided inside the bundled tube body 1, and the multiple sub-tube bodies 2 abut against the positioning post 4. The positioning post 4 allows for a more stable locking of the multiple sub-tube bodies 2 inside the bundled tube body 1. From the outside to the inside, the bundled tube body 1 includes a reflective coating 101, a protective coating 102, a buffer layer 103, a bundled tube structural layer 104, and a bundled tube inner lining layer 105, thus optimizing the bundled tube body 1. The internal structure enables the bundle tube body 1 to achieve efficient insertion and removal, pressure resistance, and weather resistance and corrosion protection, and significantly improves mechanical strength, environmental adaptability and maintenance efficiency, making it suitable for various scenarios. The inner lining layer 105 of the bundle tube is made of high-density polyethylene, and the buffer layer 103 is made of foamed silicone. The material of the inner lining layer 105 is limited, which can provide an ultra-low friction surface to ensure smooth insertion and removal of the sub-tube body 2. The material of the buffer layer 103 is limited, which can absorb mechanical vibration energy and protect the internal optical fiber from impact damage, making it suitable for high vibration scenarios.
[0034] Please see Figure 1 , Figure 3 and Figure 6 The sub-tube body 2, from the outside to the inside, comprises a hydrophobic nano-coating 201, a low-friction coating 202, a reinforcement layer 203, a sub-tube structural layer 204, and a sub-tube inner liner 205. The internal structural components of the sub-tube body 2 are optimized, enabling it to achieve ultra-low friction insertion / extraction, high tensile strength, and wear and moisture resistance, making it more practical. The sub-tube inner liner 205 is made of an ultra-smooth polymer, and the sub-tube structural layer 204 is made of transparent polycarbonate or wear-resistant TPU. By limiting the material of the sub-tube inner liner 205, insertion / extraction resistance is reduced, protecting the fiber surface. By limiting the material of the sub-tube structural layer 204, high impact resistance is provided while maintaining high light transmittance, facilitating real-time monitoring of fiber status, making it suitable for high-frequency maintenance scenarios.
[0035] Please see Figure 1 , Figure 2 and Figure 3 A quick-release assembly 3 is provided between the bundle tube body 1 and the sub-tube body 2. The quick-release assembly 3 includes a convex strip 301 fixedly connected to the outer surface of the sub-tube body 2. One end of the convex strip 301 is fixedly connected to a latch A302. A concave groove 303 adapted to the convex strip 301 is provided on the inner side of the bundle tube body 1. The concave groove 303 allows the sub-tube body 2 to be easily inserted into the bundle tube body 1 along a specified trajectory, thereby facilitating the subsequent stable locking of the sub-tube body 2.
[0036] Please see Figure 2 , Figure 3 and Figure 4A locking groove 304 is provided at the end of the concave groove 303. A latch B305 is slidably fitted on the inner wall of the locking groove 304. The latch B305 is adapted to the latch A302. A pressing rod 306 is fixedly connected to one side of the latch B305. The pressing rod 306 is slidably fitted in the inner wall of the locking groove 304, and a washer 308 is fixedly connected to the other end of the pressing rod 306. By limiting the position of the pressing rod 306, the pressing rod 306 can be made more stable when pressed. The washer 308 can increase the contact area of one end of the pressing rod 306, thereby facilitating the pressing of the pressing rod 306. Two telescopic springs 307 are fixedly connected to the other side of the latch B305. The other ends of the two telescopic springs 307 are fixedly connected to the inner wall of the locking groove 304. Next, by limiting the positional relationship of the telescopic spring 307, the elastic force generated by the deformation of the telescopic spring 307 can be used to reset the position of the latch B305, thereby facilitating the locking and unlocking of the convex strip 301 and the latch A302. When locking, the latch A302 is inserted into the locking groove 304, and the elastic force of the telescopic spring 307 can lock the latch B305 and the latch A302 together. When unlocking and replacing the sub-tube body 2, the pressing rod 306 can be pressed to move the latch B305 down, thereby releasing the locking state between it and the latch A302, and then the sub-tube body 2 can be pulled out. In this way, the quick-release component 3 can ensure quick disassembly and assembly while preventing radial displacement of the sub-tube body 2.
[0037] In this embodiment, a bundled tube that facilitates the replacement of sub-tubes is provided. The bundled tube body 1 adopts a multi-layer composite structure design, which can significantly reduce insertion and extraction resistance and improve pressure resistance. It also has a certain degree of enhanced weather resistance and nighttime identification efficiency. The sub-tube body 2 adopts a multi-layer composite structure design, which can reduce insertion and extraction resistance and maintain a certain light transmittance, facilitating real-time monitoring of fiber status. The quick-release component 3 can effectively prevent radial displacement of the sub-tube body 2. The quick-release component 3 is guided by the convex strip 301 and the concave groove 303, combined with the elastic locking mechanism of the A latch A302, B latch B305 and the telescopic spring 307, to achieve quick installation and stable fixation of the sub-tube body 2. The pressing rod 306 and the gasket 308 optimize the convenience of operation. Finally, the positioning post 4 is provided to enhance the overall structural stability, avoid bending damage, and make it more practical.
[0038] The working principle of the above embodiment is as follows: When the sub-tube body 2 needs to be installed, the operator inserts the convex strip 301 of the sub-tube body 2 into the concave groove 303 of the bundle tube body 1. During the insertion process, the sub-tube inner lining 205 of the sub-tube body 2 and the bundle tube inner lining 105 of the bundle tube body 1 form an ultra-low friction fit to ensure smooth insertion and removal. When the sub-tube body 2 is pushed to the end, the locking buckle A302 at the end of the convex strip 301 and the locking buckle B305 inside the locking groove 304 automatically engage under the elastic force of the telescopic spring 307, forming a radial locking force. Then, multiple sub-tube bodies 2 are installed with the bundle tube body 1 in sequence according to the above steps. At the same time, the positioning post 4 abuts against the sub-tube body 2 to prevent radial displacement. The buffer layer 103 absorbs external vibration energy, while the protective coating 102 resists external corrosion and ensures long-term stability. When disassembly is required, press the pad 308 set on the outside of the bundle tube body 1. The pressure is transmitted through the pressing rod 306 to make the locking buckle B305 move down and disengage from the locking buckle A302. After the locking is released, the sub-tube body 2 can be pulled out in the reverse direction. Throughout the process, the sub-tube structural layer 204 maintains high light transmittance, which is convenient for observing the internal optical fiber status. The reinforcing layer 203 and the hydrophobic nano-coating 201 ensure the structural strength and moisture resistance of the sub-tube body 2 under frequent insertion and removal. The reflective coating 101 provides nighttime identification function, making the bundle tube suitable for various complex environments. Its overall performance has been significantly improved compared with the traditional structure.
[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0040] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bundled tube for easy replacement of sub-tubes, comprising a bundled tube body (1), characterized in that: The bundle tube body (1) is equipped with multiple sub-tube bodies (2). A quick-release assembly (3) is provided between the bundle tube body (1) and the sub-tube bodies (2). The quick-release assembly (3) includes a convex strip (301) fixedly connected to the outer surface of the sub-tube body (2). One end of the convex strip (301) is fixedly connected to a latch A (302). The inner side of the bundle tube body (1) is provided with a concave groove (303) that matches the convex strip (301). The end of the concave groove (303) is provided with a locking groove (304). The inner wall of the locking groove (304) is slidably fitted with a latch B (305). The latch B (305) matches the latch A (302). One side of the latch B (305) is fixedly connected to a pressing rod (306), and the other side of the latch B (305) is fixedly connected to two telescopic springs (307).
2. A bundled tube for easy replacement of sub-tubes according to claim 1, characterized in that: The pressing rod (306) is slidably sleeved in the inner wall of the locking groove (304), and the other end of the pressing rod (306) is fixedly connected to a gasket (308).
3. A bundled tube for easy replacement of sub-tubes according to claim 1, characterized in that: The other end of each of the two telescopic springs (307) is fixedly connected to the inner wall of the locking groove (304).
4. A bundled tube for easy replacement of sub-tubes according to claim 1, characterized in that: The bundle tube body (1) is provided with a positioning post (4) inside, and the multiple sub-tube bodies (2) all abut against the positioning post (4).
5. A bundled tube for easy replacement of sub-tubes according to claim 1, characterized in that: The bundle tube body (1) includes, from the outside to the inside, a reflective coating (101), a protective coating (102), a buffer layer (103), a bundle tube structure layer (104), and a bundle tube inner lining layer (105).
6. A bundled tube for easy replacement of sub-tubes according to claim 5, characterized in that: The inner lining (105) of the bundle tube is made of high-density polyethylene, and the buffer layer (103) is made of foamed silicone.
7. A bundled tube for easy replacement of sub-tubes according to claim 1, characterized in that: The sub-tube body (2) includes, from the outside to the inside, a hydrophobic nano-coating (201), a low-friction coating (202), a reinforcing layer (203), a sub-tube structural layer (204), and a sub-tube inner lining layer (205).
8. A bundle tube for easy replacement of sub-tubes according to claim 7, characterized in that: The inner lining (205) of the sub-tube is made of an ultra-smooth polymer, and the structural layer (204) of the sub-tube is made of transparent polycarbonate or wear-resistant TPU.
Citation Information
Patent Citations
Bundling pipe with sub-pipes convenient to replace
CN213690045U