A high-shield flame-retardant chassis cable

Abstract

This utility model discloses a high-shield flame-retardant chassis cable, relating to the field of chassis cable technology. It includes an outer flame-retardant layer, with protective connecting sleeves fixedly connected to both ends of the outer flame-retardant layer. A plug is fixedly connected to the end of the protective connecting sleeve furthest from the outer flame-retardant layer. The outer flame-retardant layer contains two symmetrically distributed inner flame-retardant layers, each containing a protective layer. Equidistantly distributed bending limiting rings are located on the outer side of each inner flame-retardant layer. A metal shielding layer is located between the inner side of the inner flame-retardant layer and the outer side of the protective layer. This high-shield flame-retardant chassis cable achieves physical blocking of the flame propagation path through triple flame retardancy of the outer flame-retardant layer, inner flame-retardant layer, and bending limiting rings. The bending limiting rings, while flame-retardant, limit the cable bending angle, preventing the risk of flame penetration after structural deformation. The insulating fireproof filler between the conductor and the cable tray prevents the flame from spreading along the conductor to the plug, avoiding fire at the connection end.

Description

Technical Field

[0001] This utility model relates to the field of chassis cable technology, specifically a high-shield flame-retardant chassis cable. Background Technology

[0002] Chassis cables generally refer to the various cables that connect the internal hardware devices of a computer case, including power cables, data cables, and interface cables.

[0003] Chinese patent (publication number: CN209844126U) discloses a waterproof modular power cord, including an upper box and a lower box. A support plate is fixedly connected to one side of the lower box, and an output end is fixedly connected to the side of the support plate away from the lower box. Upper and lower fixing blocks are provided on the upper and lower boxes to facilitate the gathering of the power cord, avoiding messiness and tangling. The upper and lower boxes are fastened together, facilitating the initial installation and subsequent disassembly of the power cord. A rubber layer is provided to improve the sealing of the connection when the output end is connected to the corresponding device, preventing leakage and water seepage. The wire body is wrapped with a heat-resistant layer made of polytetrafluoroethylene, which has good heat resistance. The waterproof layer is made of polyethylene, which has good waterproof and insulation properties, reducing safety hazards. The overall structure is reasonable, easy to assemble and disassemble, has good sealing performance, high safety factor, and improves the service life of the power cord.

[0004] While existing technologies can overcome the shortcomings mentioned above, other problems still exist in their operation: existing chassis cables achieve their flame-retardant effect through their outer flame-retardant layer, but the individual cables that make up the chassis cables have poor protection, and excessive bending of the cables can easily cause the internal shielding layer to fail. Utility Model Content

[0005] The purpose of this invention is to provide a highly shielded flame-retardant chassis cable to solve the problems in the background art where the individual cables constituting the chassis cable have poor protection and excessive bending of the cable can easily lead to the failure of its internal shielding layer.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-shield flame-retardant chassis cable, comprising an outer flame-retardant layer, both ends of which are fixedly connected to protective connecting sleeves, and a plug is fixedly connected to the end of the protective connecting sleeve away from the outer flame-retardant layer;

[0007] The outer flame-retardant layer has two symmetrically distributed inner flame-retardant layers inside, and a protective layer inside the inner flame-retardant layer. The outer side of the inner flame-retardant layer has equidistantly distributed bent limiting rings, and a metal shielding layer is provided between the inner side of the inner flame-retardant layer and the outer side of the protective layer.

[0008] Preferably, the inner flame-retardant layer and the bending limiting ring are both flame-retardant materials, the metal shielding layer is a mesh structure made of metal, and the protective layer is an insulating material.

[0009] Preferably, the protective layer has radially distributed wiring channels inside, the wiring channels contain wires, and the space between the wires and the wiring channels is filled with insulating and fireproof filler.

[0010] Preferably, a retaining ring is fixedly connected to the end of the plug near the protective connecting sleeve, and the retaining ring is fixedly connected to the inside of the protective connecting sleeve, while the end of the protective connecting sleeve away from the plug is fixedly connected to the outside of the outer flame-retardant layer.

[0011] Preferably, the plug has equally spaced wiring holes at one end near the protective connecting sleeve, and the insulating and fireproof filler extends into the wiring holes.

[0012] Preferably, the side of the plug away from the protective connecting sleeve is fixedly connected with equidistant conductive plug rods, and the conductive plug rods and wiring holes are aligned one by one.

[0013] Preferably, the wire extends through the fixing ring into the interior of the conductive plug rod, and a limiting buckle is installed on the outer wall of the plug.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This highly shielded flame-retardant chassis cable uses a triple flame-retardant system consisting of an outer flame-retardant layer, an inner flame-retardant layer, and a bending limiting ring to physically block the path of flame propagation. The bending limiting ring limits the bending angle of the cable while providing flame retardancy, preventing the risk of flame penetration after structural deformation. The fireproof insulating filler between the conductor and the cable tray prevents the flame from spreading along the conductor to the plug, thus preventing fire at the connection end.

[0016] The metal shielding layer is located between the inner flame-retardant layer and the protective layer. It is a full-coverage barrier made of metal mesh, which effectively absorbs or reflects external electromagnetic interference and prevents internal signals from leaking out. The radially distributed wiring channels isolate the wires and reduce crosstalk. The bending limit ring restricts excessive bending and avoids the metal shielding layer from becoming gaps due to deformation, which would cause shielding failure. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the metal shielding layer structure of this utility model;

[0020] Figure 4This is a schematic diagram of the cross-sectional structure of the protective layer of this utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the outer flame-retardant layer of this utility model;

[0022] Figure 6 This is a schematic diagram of the wiring hole structure of this utility model.

[0023] In the diagram: 1. Outer flame-retardant layer; 2. Protective connecting sleeve; 3. Plug; 4. Inner flame-retardant layer; 5. Protective layer; 6. Bending limit ring; 7. Metal shielding layer; 8. Cable tray; 9. Fireproof filler; 10. Wire; 11. Fixing ring; 12. Cable hole; 13. Conductive plug rod; 14. Limiting buckle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figure 1 - Figure 6 This utility model provides the following technical solution: a high-shield flame-retardant chassis cable, comprising an outer flame-retardant layer 1, with protective connecting sleeves 2 fixedly connected to both ends of the outer flame-retardant layer 1, and a plug 3 fixedly connected to the end of the protective connecting sleeve 2 away from the outer flame-retardant layer 1; two symmetrically distributed inner flame-retardant layers 4 are provided inside the outer flame-retardant layer 1, with a protective layer 5 inside the inner flame-retardant layer 4, and equidistantly distributed bending limiting rings 6 on the outer side of the inner flame-retardant layer 4; a metal shielding layer 7 is provided between the inner side of the inner flame-retardant layer 4 and the outer side of the protective layer 5; both the inner flame-retardant layer 4 and the bending limiting rings 6 are made of flame-retardant materials, the metal shielding layer 7 is a metal mesh structure, and the protective layer 5 is an insulating material; the protective layer 5 has radially distributed cable trays 8 inside, and the cable trays 8 have conductive... The wire 10 and the cable tray 8 are filled with insulating and fireproof filler 9; the end of the plug 3 near the protective connecting sleeve 2 is fixedly connected to a fixing ring 11, and the fixing ring 11 is fixedly connected to the inside of the protective connecting sleeve 2, and the end of the protective connecting sleeve 2 away from the plug 3 is fixedly connected to the outside of the outer flame-retardant layer 1; the end of the plug 3 near the protective connecting sleeve 2 is provided with equally spaced cable holes 12, and the insulating and fireproof filler 9 extends into the inside of the cable holes 12; the side of the plug 3 away from the protective connecting sleeve 2 is fixedly connected with equally spaced conductive plug rods 13, and the conductive plug rods 13 and the cable holes 12 are aligned one by one; the wire 10 passes through the fixing ring 11 and extends into the inside of the conductive plug rod 13, and a limit fastener 14 is installed on the outer wall of the plug 3.

[0026] It is particularly suitable for industrial or IT environments requiring high security and electromagnetic interference protection. Its multi-layered structure provides flame retardancy and shielding, ensuring stable operation under high temperature, fire, or electromagnetic interference conditions.

[0027] The outer flame-retardant layer 1 serves as the outermost layer of protection, connecting to the protective connecting sleeves 2 at both ends, and then fixed to the plug 3 through the protective connecting sleeves 2, forming a basic frame to protect the internal components. When the cable is installed, the flame-retardant material and the metal shielding layer 7 work together to prevent the spread of flames and signal distortion; the internal wiring channel 8 and the wire 10 ensure efficient transmission.

[0028] In the external structure, the outer flame-retardant layer 1 is made of flame-retardant material, such as high-temperature resistant polymer. Its main function is to prevent external fire sources from entering the cable. When a short circuit or fire occurs inside the chassis, the outer flame-retardant layer 1 can suppress the spread of flames and prevent further damage. At the same time, the protective connecting sleeve 2 is fixed at both ends of the outer flame-retardant layer 1, close to the plug 3, forming a physical barrier. The material of the protective connecting sleeve 2 is tough and impact-resistant, and can absorb mechanical stress such as bending or vibration, preventing the connection point between the plug 3 and the outer flame-retardant layer 1 from loosening. This ensures the durability of the cable in daily use and reduces the risk of damage caused by external friction. The end of the protective connecting sleeve 2 away from the outer flame-retardant layer 1 is directly fixed to the plug 3, forming a sealed transition area to prevent dust or moisture from entering the core part.

[0029] The internal flame retardant system achieves double protection through the inner flame retardant layer 4 and the bending limiting ring 6. The outer flame retardant layer 1 has two symmetrically distributed inner flame retardant layers 4, each of which is also made of flame retardant material, providing secondary fire protection. If the fire source breaks through the outer flame retardant layer 1, the inner flame retardant layer 4 acts as a supplementary barrier to further delay the spread of the flame to the protective layer 5, preventing the internal wires 10 from being exposed to high temperatures.

[0030] Bending limit rings 6 are evenly distributed on the outer side of the inner flame-retardant layer 4. They are made of flame-retardant material and their main function is to limit the bending angle of the cable. When the cable is installed in a narrow space, the bending limit rings 6 can prevent excessive bending from causing structural deformation. At the same time, as an extension of the flame-retardant element, they enhance the overall fire resistance. At the corner of the chassis, the bending limit rings 6 keep the cable shape stable, reduce the risk of wear caused by repeated bending, and ensure that the cable does not fail after long-term use.

[0031] The metal shielding layer 7 is a mesh structure made of metal wires, such as copper or aluminum mesh, used to block electromagnetic interference. When external electronic equipment generates high-frequency electromagnetic waves, the metal shielding layer 7 can absorb or reflect these interference signals, preventing them from penetrating into the internal conductors 10 and maintaining signal purity. Conversely, the signals transmitted by the internal conductors 10 will not leak into the external environment, avoiding mutual interference. The protective layer 5, made of insulating material, wraps around the metal shielding layer 7, providing electrical isolation and preventing short circuits caused by contact between the shielding layers. This layout ensures that signal transmission does not attenuate in electromagnetic radiation environments.

[0032] The core circuit consists of a protective layer 5, cable trays 8, conductors 10, and insulating and fireproof filler 9. The protective layer 5 has a radially distributed cable tray 8 inside. This design allows multiple conductors 10 to be arranged radially, reducing mutual entanglement and signal crosstalk. The conductors 10 are installed inside the cable trays 8 and are responsible for current or data transmission. The space between the conductors 10 and the cable trays 8 is filled with insulating and fireproof filler 9. This filler has both insulation and fireproof properties. During operation, the insulating and fireproof filler 9 isolates the potential difference between the conductors to prevent arcing. At the same time, in the event of a fire, it prevents the flame from spreading along the conductors 10, protecting the conductivity integrity of the conductors. The radial cable trays 8 improve heat dissipation efficiency and prevent the conductors from overheating and causing failure.

[0033] The plug 3 is fixed to the outer flame-retardant layer 1 by the protective connecting sleeve 2, and a fixing ring 11 is provided at one end of the plug 3 near the protective connecting sleeve 2. The fixing ring 11 is embedded in the inner side of the protective connecting sleeve 2 to strengthen the mechanical fastening. During operation, the wire 10 passes through the fixing ring 11 from the wiring groove 8 to keep the wires neatly arranged. The limit movable buckle 14 is installed on the outer wall of the plug 3 to provide safety locking. When the user operates, the socket can be fastened to prevent accidental dislodgement.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-shield flame-retardant chassis cable, comprising an outer flame-retardant layer (1), wherein protective connecting sleeves (2) are fixedly connected to both ends of the outer flame-retardant layer (1), and a plug (3) is fixedly connected to one end of the protective connecting sleeve (2) away from the outer flame-retardant layer (1); characterized in that The outer flame retardant layer (1) has two symmetrically distributed inner flame retardant layers (4), the inner flame retardant layer (4) has a protective layer (5), the outer side of the inner flame retardant layer (4) has equidistantly distributed bending limiting rings (6), and a metal shielding layer (7) is provided between the inner side of the inner flame retardant layer (4) and the outer side of the protective layer (5).

2. A high shielding, flame-retardant chassis line according to claim 1, characterized in that: The inner flame-retardant layer (4) and the bending limiting ring (6) are both flame-retardant materials, the metal shielding layer (7) is a mesh structure made of metal, and the protective layer (5) is an insulating material.

3. A high shielded flame retardant enclosure raceway according to claim 2, wherein: The protective layer (5) has radially distributed wiring channels (8) inside, and wires (10) are provided inside the wiring channels (8). The space between the wires (10) and the wiring channels (8) is filled with insulating and fireproof filler (9).

4. A high shielding, flame-retardant chassis line according to claim 3, characterized in that: The plug (3) is fixedly connected to a fixing ring (11) at one end near the protective connecting sleeve (2), and the fixing ring (11) is fixedly connected to the inside of the protective connecting sleeve (2). The end of the protective connecting sleeve (2) away from the plug (3) is fixedly connected to the outside of the outer flame retardant layer (1).

5. A high shielded flame retardant enclosure raceway according to claim 4, wherein: The plug (3) has equally spaced wiring holes (12) at one end near the protective connecting sleeve (2), and the insulating fireproof filler (9) extends into the wiring holes (12).

6. The high-shield flame-retardant chassis cable according to claim 5, characterized in that: The plug (3) is fixedly connected to a conductive plug rod (13) that is equidistantly distributed on the side away from the protective connecting sleeve (2), and the conductive plug rod (13) and the wiring hole (12) are aligned one by one.

7. The high-shield flame-retardant chassis cable according to claim 6, characterized in that: The wire (10) passes through the fixing ring (11) and extends into the interior of the conductive plug rod (13), and a limit snap (14) is installed on the outer wall of the plug (3).

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