Multi-shielding flame-retardant computer cable

Abstract

The utility model discloses a multi-shielding flame-retardant computer cable which comprises an outer sheath, a first flame-retardant layer, a first shielding layer, a second flame-retardant layer, a second shielding layer, a wrapping layer and a filling layer which are sequentially arranged from outside to inside, a drainage wire is arranged in the second flame-retardant layer, and a plurality of cable cores are arranged in the filling layer. The cable core comprises an inner sheath and a third shielding layer located in the inner sheath, two twisted wire cores are arranged in the third shielding layer, and each wire core sequentially comprises an insulating layer, a fireproof layer and a conductor from outside to inside. The computer cable is provided with the fireproof layer and a multi-layer flame-retardant layer structure, and the flame-retardant and fireproof performance of the cable is remarkably improved, so that in the case of a fire, the further spreading of the fire behavior can be delayed, and the integrity of the cable structure and the stable transmission of signals can be maintained. And a plurality of shielding layers are arranged, so that the influence of external electromagnetic interference on internal signals of the cable is effectively prevented, and the transmission quality and stability of the signals are improved.

Description

Technical Field

[0001] The utility model relates to the field of cables, and more specifically to a multi-shielded flame-retardant computer cable. Background Art

[0002] Computer cable is a type of cable used for electrical equipment. It plays an important role in modern computer and automation systems. It is mainly used to connect computers and other devices to achieve functions such as data transmission, power supply, remote control and network connection.

[0003] Existing computer cables often lack flame retardancy and fire resistance. In extreme situations, such as fires, cables can quickly burn and spread, rapidly damaging the cable structure and disrupting signal transmission. This can not only lead to data loss but also exacerbate the fire hazard. Some computer cables also have limitations in their electromagnetic interference resistance. Especially in complex environments, external electromagnetic interference can severely impact the signal within the cable, causing degradation or even interruption of signal transmission. This can affect the normal operation of computer systems and the accuracy of data transmission. Utility Model Content

[0004] The utility model aims to overcome the defects of the prior art and provides a multi-shielded flame-retardant computer cable.

[0005] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: A computer cable, comprising an outer sheath, a first flame-retardant layer, a first shielding layer, a second flame-retardant layer, a second shielding layer, a wrapping layer and a filling layer, which are arranged in sequence from the outside to the inside, the second flame-retardant layer has a drain wire, the filling layer has multiple cable cores, the cable core comprises an inner sheath and a third shielding layer located in the inner sheath, the third shielding layer has two twisted wire cores, the wire core comprises an insulating layer, a fire-resistant layer and a conductor from the outside to the inside, the first shielding layer is an aluminum foil wrapped shielding layer, the second shielding layer is a copper wire braided shielding layer, the third shielding layer is a copper tape wrapped shielding layer, the first flame-retardant layer is made of silicone rubber material, and the second flame-retardant layer is wrapped with a fire-resistant mica tape.

[0006] Furthermore, the outer sheath is made of polyvinyl chloride.

[0007] Thereby effectively protecting the internal structure of the cable.

[0008] Furthermore, the wrapping layer is formed by wrapping an aluminum-plastic composite tape.

[0009] This not only protects the internal cable core, but also has a certain shielding effect.

[0010] Furthermore, the filling layer is an asbestos filling layer.

[0011] Thereby further improving the flame retardant performance of the cable.

[0012] Furthermore, the inner sheath is made of polyvinyl chloride.

[0013] This effectively protects the conductor from the influence of the external environment.

[0014] Furthermore, the fire-resistant layer is a glass fiber layer.

[0015] Thereby improving the fire resistance of the wire core.

[0016] Furthermore, there are three cable cores, which are distributed in a herringbone shape.

[0017] Thus the cable has high structural stability.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The computer cable of the present application has a fire-resistant layer and a multi-layer flame-retardant layer structure, which significantly improves the flame retardant and fire-resistant performance of the cable, thereby being able to delay the further spread of fire in the event of a fire, maintain the integrity of the cable structure and the stable transmission of signals.

[0020] 2. The computer cable of the present application has multiple shielding layers, which effectively prevents the influence of external electromagnetic interference on the internal signal of the cable, improves the transmission quality and stability of the signal, and can meet the data transmission needs in various complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a computer cable;

[0022] Figure 2 This is an enlarged view of area A;

[0023] Figure 3 This is a cross-sectional view of a computer cable.

[0024] Explanation of reference numerals: outer sheath 1; first flame retardant layer 2; first shielding layer 3; second flame retardant layer 4; drain wire 4.1; second shielding layer 5; wrapping layer 6; filling layer 7; inner sheath 8; third shielding layer 9; insulating layer 10; fire-resistant layer 11; conductor 12. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The utility model provides Figure 1-3 The multi-shielded flame-retardant computer cable shown includes an outer sheath 1, a first flame-retardant layer 2, a first shielding layer 3, a second flame-retardant layer 4, a second shielding layer 5, a wrapping layer 6 and a filling layer 7, which are arranged in sequence from the outside to the inside. The second flame-retardant layer 4 has a drain wire 4.1, and the filling layer 7 has multiple cable cores. The cable core includes an inner sheath 8 and a third shielding layer 9 located in the inner sheath 8. The third shielding layer 9 has two twisted wire cores. The wire core includes an insulating layer 10, a fire-resistant layer 11 and a conductor 12 from the outside to the inside. The first shielding layer 3 is an aluminum foil wrapped shielding layer, the second shielding layer 5 is a copper wire braided shielding layer, and the third shielding layer 9 is a copper tape wrapped shielding layer. The first flame-retardant layer 2 is made of silicone rubber material, and the second flame-retardant layer 4 is wrapped with a fire-resistant mica tape.

[0027] The outer sheath 1 is made of polyvinyl chloride. The wrapping layer 6 is wrapped with aluminum-plastic composite tape. The filling layer 7 is an asbestos filling layer. The inner sheath 8 is made of polyvinyl chloride. The fire-resistant layer 11 is a glass fiber layer. The cable has three cores, arranged in a herringbone pattern.

[0028] Working Principle: This computer cable, featuring a fire-resistant layer and multiple flame-retardant layers, significantly improves its flame-retardant and fire-resistant properties. This can slow the spread of fire in the event of a fire, maintaining the integrity of the cable structure and ensuring stable signal transmission. Furthermore, the multi-layer shielding effectively prevents external electromagnetic interference from affecting the cable's internal signals, improving signal transmission quality and stability, and meeting data transmission requirements in a variety of complex environments.

[0029] The computer cable of the present application is specifically prepared by wrapping the three prepared cable cores together with an aluminum-plastic composite tape, and filling the wrapping layer with asbestos. Then, a second shielding layer is made outside the wrapping layer to improve the shielding performance of the cable. Then, a second flame-retardant layer is made outside the second shielding layer to improve the flame-retardant performance of the cable, and a drain wire is made inside the second flame-retardant layer to enhance the safety and reliability of the cable. Then, a first shielding layer is made outside the second flame-retardant layer to further improve the shielding performance of the cable. Then, a first flame-retardant layer is made outside the first shielding layer to further improve the flame-retardant performance of the cable. Finally, an outer sheath is made outside the first flame-retardant layer.

[0030] Although the present invention has been illustrated and described with respect to preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A multi-shielded flame-retardant computer cable, characterized in that: The invention comprises an outer sheath (1), a first flame retardant layer (2), a first shielding layer (3), a second flame retardant layer (4), a second shielding layer (5), a wrapping layer (6) and a filling layer (7) which are arranged in sequence from the outside to the inside. The second flame retardant layer (4) has a drain wire (4.1) therein. The filling layer (7) has a plurality of cable cores therein. The cable cores comprise an inner sheath (8) and a third shielding layer (9) located in the inner sheath (8). The third shielding layer (9) has two twisted wire cores therein. The wire cores comprise an insulating layer (10), a fire-resistant layer (11) and a conductor (12) from the outside to the inside. The first shielding layer (3) is an aluminum foil wrapping shielding layer, the second shielding layer (5) is a copper wire braiding shielding layer, the third shielding layer (9) is a copper tape wrapping shielding layer, the first flame retardant layer (2) is made of silicone rubber material, and the second flame retardant layer (4) is a fire-resistant mica tape wrapping.

2. The multi-shielded flame-retardant computer cable according to claim 1, characterized in that: The outer sheath (1) is made of polyvinyl chloride.

3. The multi-shielded flame-retardant computer cable according to claim 1, characterized in that: The wrapping layer (6) is formed by wrapping an aluminum-plastic composite tape.

4. The multi-shielded flame-retardant computer cable according to claim 1, characterized in that: The filling layer (7) is an asbestos filling layer.

5. The multi-shielded flame-retardant computer cable according to claim 1, characterized in that: The inner sheath (8) is made of polyvinyl chloride.

6. The multi-shielded flame-retardant computer cable according to claim 1, characterized in that: The fire-resistant layer (11) is a glass fiber layer.

7. The multi-shielded flame-retardant computer cable according to claim 1, characterized in that: The cable cores are three and distributed in a herringbone shape.

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