Network cable sleeve capable of preventing signal interference

Abstract

The utility model discloses a network cable sleeve capable of preventing signal interference, which comprises a sleeve body used for loading a network cable, the sleeve body comprises an inner insulating layer, a middle shielding layer and an outer protective layer from inside to outside, and the network cable sleeve also comprises a semicircular bulge integrally formed on the inner wall of the inner insulating layer, a placing cavity for placing a cable is formed in the semicircular bulge; the middle shielding layer is mainly composed of a main shielding layer, a conductive cloth layer and a woven mesh layer. According to the utility model, the inner wall of the inner insulating layer is provided with the annular equidistant semicircular projections and the independent placing cavities, so that classified storage and physical isolation of a plurality of network cables are realized, and sheath damage and core wire hidden dangers caused by collision and friction among the network cables are avoided; meanwhile, the middle shielding layer composed of the corrugated single-face conductive aluminum foil, the copper-graphene composite conductive cloth and the double-layer reverse spiral tinned copper wire net is matched, low-frequency, intermediate-frequency and high-frequency electromagnetic interference is blocked in a layered mode, full-band signal protection is formed, and stability and reliability of network cable data transmission are guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of communication cable protection devices, and more specifically, to a network cable sleeve that can prevent signal interference. Background Technology

[0002] A network cable conduit is a tubular material worn over a network cable to provide physical protection and a certain degree of environmental protection. Its core function is to provide an external barrier for the fragile and critical network cable, preventing damage from daily use or complex environments. Specifically, network cable conduits can resist potential threats such as physical friction, compression, rodent bites, moisture, chemical corrosion, and excessively high temperatures. By threading the network cable through the conduit, the lifespan of the cable can be effectively extended, reducing signal interruptions or network failures caused by external damage, thereby ensuring the reliability and stability of network cabling. Common conduit materials include PVC (polyvinyl chloride), PE (polyethylene), corrugated metal flexible tubing, and shielding materials with special functions. Depending on the application, their flexibility, flame retardancy, and protection level vary.

[0003] Existing network cable conduits have certain problems in terms of protection performance and structural design. Firstly, in terms of protection performance, they are not only weak in preventing signal interference, but most rely on only a single shielding layer, which is difficult to effectively isolate electromagnetic interference, easily leading to data transmission packet loss or delay. Moreover, their bending resistance is poor, and they are prone to wrinkling or breaking under stress, which in turn damages the shielding structure and squeezes the network cable core. Secondly, in terms of structural design and installation, they lack internal partitioning structures. When multiple network cables are run together, they are prone to wear and tear on the outer sheath due to mutual friction, further weakening the shielding effect. At the same time, the installation method is cumbersome, especially for long-distance or fixed network cables, where the cable pulling is difficult and inefficient. Therefore, we urgently need a network cable conduit that can prevent signal interference to solve the above problems. Utility Model Content

[0004] One objective of this invention is to provide a new technical solution for a network cable sheath that can prevent signal interference. Through the inner layer of equidistant semi-circular protrusions and independent placement cavities, a three-layer composite shielding layer, and a moisture-proof spiral groove structure, it achieves anti-collision for multiple network cables, anti-interference across the entire frequency band, and moisture and excessive bending prevention, thus ensuring stable network cable transmission.

[0005] According to a first aspect of the present invention, a network cable sheath that can prevent signal interference is provided, comprising a sheath body for loading network cables, the sheath body comprising, from the inside out, an inner insulating layer, an intermediate shielding layer and an outer protective layer, and further comprising: a semi-circular protrusion integrally formed on the inner wall of the inner insulating layer, the semi-circular protrusion having a placement cavity for placing cables; the intermediate shielding layer mainly consisting of a main shielding layer, a conductive cloth layer and a braided mesh layer; and a reinforcing portion disposed on the outer protective layer for preventing bending.

[0006] Optionally, the reinforcing part includes a moisture-proof layer disposed between the outer protective layer and the woven mesh layer. The moisture-proof layer has a spiral groove formed along the axial direction of the sleeve body. The inner wall of the outer protective layer has a spiral reinforcing rib integrally formed along the axial direction of the sleeve body, and the spiral reinforcing rib is embedded in the spiral groove to form an anti-bending area.

[0007] Optionally, the number of the semicircular protrusions is at least six sets, and the multiple sets of the semicircular protrusions are arranged equidistantly in a ring along the axis of the sleeve body.

[0008] Optionally, the inner wall of the placement cavity is provided with a silicone layer for cushioning.

[0009] Optionally, the main shielding layer is a single-sided conductive aluminum foil with isosceles trapezoidal corrugations on its surface, and the troughs of the corrugations are bonded to the inner insulating layer by dotted hot melt adhesive.

[0010] Optionally, the gap between the main shielding layer and the inner insulating layer is in the range of 0.1 to 0.3 mm.

[0011] Optionally, the conductive cloth layer is mainly composed of a copper coating and a graphene coating, and the conductive cloth layer is bonded and fixed to the main shielding layer by a nickel-containing conductive adhesive.

[0012] Optionally, the woven mesh layer is a tin-plated copper wire woven mesh.

[0013] 1. According to one embodiment of this disclosure, the network cable sheath that can prevent signal interference achieves classified storage and physical isolation of multiple network cables by setting annular equidistant semi-circular protrusions and independent placement cavities on the inner wall of the inner insulation layer. This avoids damage to the outer sheath and potential core wire hazards caused by collisions and friction between network cables. At the same time, it is combined with an intermediate shielding layer composed of corrugated single-sided conductive aluminum foil, copper-graphene composite conductive cloth and double-layer reverse spiral tinned copper wire mesh to block low-frequency, medium-frequency and high-frequency electromagnetic interference in layers, forming full-band signal protection and ensuring stable and reliable network cable data transmission.

[0014] 2. According to one embodiment of this disclosure, the network cable conduit that can prevent signal interference effectively blocks the infiltration of external moisture to avoid the intermediate shielding layer from being damp and corroded by adding a moisture-proof layer between the outer protective layer and the braided mesh layer, thus extending the overall service life of the conduit. At the same time, the spiral groove of the moisture-proof layer and the embedded cooperation of the spiral reinforcing ribs on the inner wall of the outer protective layer form a precise anti-bending zone, which allows the conduit to bend normally to adapt to the wiring requirements, while limiting excessive bending from damaging the structure of the internal insulation layer and shielding layer. It can also fix the interlayer position to prevent displacement, thereby improving the structural stability and application of the conduit.

[0015] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0017] Figure 1 This is a schematic diagram of the overall structure of a network cable sheath that can prevent signal interference in one embodiment;

[0018] Figure 2 This is a front view schematic diagram of a network cable sheath that can prevent signal interference in one embodiment;

[0019] Figure 3 This is a schematic diagram of a half-section structure of a network cable sheath that can prevent signal interference in one embodiment.

[0020] Figure 4 This is a schematic diagram of the intermediate shielding layer structure of a network cable sheath that can prevent signal interference in one embodiment;

[0021] Figure 5 This is a schematic diagram of the moisture-proof layer structure of a network cable sheath that can prevent signal interference in one embodiment;

[0022] Figure 6 This is a schematic diagram of the outer protective layer structure of a network cable sheath that can prevent signal interference in one embodiment;

[0023] Figure 7 This is a schematic diagram of the inner insulation layer structure of a network cable sheath that can prevent signal interference in one embodiment.

[0024] The following are marked in the diagram: 1. Sleeve body; 2. Inner insulating layer; 3. Intermediate shielding layer; 4. Outer protective layer; 5. Semi-circular protrusion; 6. Placement cavity; 7. Main shielding layer; 8. Conductive cloth layer; 9. Braided mesh layer; 10. Moisture-proof layer; 11. Spiral groove; 12. Spiral reinforcing rib; 13. Silicone layer. Detailed Implementation

[0025] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0026] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0027] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0028] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0029] like Figure 1-7 As shown, a network cable sleeve that can prevent signal interference includes a sleeve body 1 for loading network cables. The sleeve body 1 includes an inner insulating layer 2 from the inside to the outside, and a semi-circular protrusion 5 integrally formed on the inner wall of the inner insulating layer 2. The number of semi-circular protrusions 5 is at least six sets. The multiple sets of semi-circular protrusions 5 are arranged equidistantly in a ring along the axis of the sleeve body 1. A placement cavity 6 for placing cables is opened on the semi-circular protrusion 5. A silicone layer 13 for buffering is provided on the inner wall of the placement cavity 6.

[0030] Here, the inner insulation layer 2 is made of low dielectric loss polyethylene material with a thickness of 1.0-1.2 mm and an inner diameter of 8-10 mm. Its inner wall is integrally formed with semi-circular protrusions 5, and there are at least six sets of semi-circular protrusions 5. The sets of semi-circular protrusions 5 are arranged equidistantly in a ring along the axis of the sleeve body 1. Each semi-circular protrusion 5 has a placement cavity 6 for placing cables. The cross-section of the placement cavity 6 is adapted to the shape of the network cable and is suitable for CAT5e / CAT6 type network cables. The inner wall of the placement cavity 6 is provided with a silicone layer 13 for buffering, with a thickness of 0.25-0.3 mm and a smooth surface treatment. Through the equidistantly arranged semi-circular protrusions 5 and the independent placement cavity 6, multiple network cables can be classified and stored, eliminating collision and friction between cables. The silicone layer 13 further absorbs external impact and avoids wear on the outer sheath and damage to the core wire of the network cable.

[0031] The intermediate shielding layer 3 mainly consists of the main shielding layer 7, which is a single-sided conductive aluminum foil with isosceles trapezoidal corrugations on its surface. The troughs of the corrugations are bonded to the inner insulating layer 2 with dotted hot melt adhesive. The gap between the main shielding layer 7 and the inner insulating layer 2 is in the range of 0.1 to 0.3 mm.

[0032] Here, the intermediate shielding layer 3 is tightly wrapped around the outer side of the inner insulating layer 2, with a total thickness of 0.6 to 0.7 mm. It is mainly composed of the main shielding layer 7, the conductive cloth layer 8, and the braided mesh layer 9, which are sequentially combined from the inside to the outside.

[0033] Furthermore, a single-sided conductive aluminum foil with a thickness of 0.06–0.08 mm is used, with the conductive side facing inward. The surface is pressed with isosceles trapezoidal corrugations with a peak spacing of 5–8 mm and a peak height of 0.3–0.5 mm. The troughs are bonded to the inner insulating layer 2 with dotted hot melt adhesive, forming a gap of 0.1–0.3 mm between the main shielding layer 7 and the inner insulating layer 2, preferably 0.2 mm. The corrugated structure and the gap work together to form a dual barrier of air reflection and aluminum foil absorption against low-frequency interference, significantly improving the low-frequency shielding effectiveness.

[0034] The conductive cloth layer 8 is mainly composed of a copper coating and a graphene coating. The conductive cloth layer 8 and the main shielding layer 7 are bonded and fixed together by a nickel-containing conductive adhesive.

[0035] Here, the conductive cloth layer 8 is mainly composed of a copper coating and a graphene coating. It uses polyester fiber as the base fabric, and first electroplats a 0.02mm thick copper layer on the surface, and then sprays a 0.005mm thick graphene coating. The conductive cloth layer 8 and the main shielding layer 7 are bonded and fixed together with nickel powder conductive adhesive without gaps. The copper layer ensures the continuity of the conductive path, and the graphene coating fills the micropores of the copper layer, eliminates shielding breaks, improves the shielding effectiveness against intermediate frequency interference by 10-15dB, and reduces the interlayer contact resistance.

[0036] Woven mesh layer 9, which is a tin-plated copper wire woven mesh.

[0037] Here, the woven mesh layer 9 consists of two layers of tin-plated copper wire woven in opposite spirals. Each layer has 64 strands of 0.1mm tin-plated copper wire, with a weaving density of ≥95% and a mesh size of 0.15×0.15mm. The first layer has a pitch of 10mm, which is a clockwise spiral, and the second layer has a pitch of 12mm, which is a counterclockwise spiral. The reverse spiral structure forms a labyrinthine high-frequency barrier. High-frequency interference needs to pass through the misaligned mesh multiple times, and the path is blocked. The high-frequency shielding effectiveness is 20-25dB higher than that of a single-layer mesh. In addition, the double-layer structure enhances mechanical strength and prevents copper wire breakage and mesh enlargement when bent.

[0038] The outer protective layer 4 has a reinforcing part for preventing bending. The reinforcing part includes a moisture-proof layer 10 disposed between the outer protective layer 4 and the woven mesh layer 9. The moisture-proof layer 10 has a spiral groove 11 formed along the axial direction of the sleeve body 1. The inner wall of the outer protective layer 4 has a spiral reinforcing rib 12 integrally formed along the axial direction of the sleeve body 1, and the spiral reinforcing rib 12 is embedded in the spiral groove 11 to form a bending-resistant area.

[0039] Here, the outer protective layer 4 is made of flame-retardant PVC material with a thickness of 0.9 to 1.1 mm to ensure that the total outer diameter of the sleeve body 1 is ≤13 mm; the anti-bending reinforcement is set on the outer protective layer 4.

[0040] Furthermore, the moisture-proof layer 10 is set between the outer protective layer 4 and the woven mesh layer 9, and is made of modified bitumen waterproof membrane or EVA waterproof membrane with a thickness of 0.1 to 0.2 mm. The moisture-proof layer 10 can block the infiltration of external water vapor, prevent the intermediate shielding layer 3 from failing due to moisture corrosion, and extend the service life of the sleeve. It is especially suitable for humid environments, such as basements and outdoor wiring environments.

[0041] Furthermore, a spiral groove 11 is formed on the moisture-proof layer 10 along the axial direction of the sleeve body 1; a spiral reinforcing rib 12 is integrally formed on the inner wall of the outer protective layer 4 along the axial direction of the sleeve body 1. The rib is made of nylon, and its cross-section is adapted to the spiral groove 11, with a bottom edge length of 1.0 mm and a height of 0.5 mm. The spiral reinforcing rib 12 is embedded in the spiral groove 11 to form an anti-bending zone. This structure can limit the excessive bending of the sleeve body 1, allowing normal bending ≤90°. When the bending exceeds 120°, the spiral reinforcing rib 12 abuts against the groove wall of the spiral groove 11, preventing the inner insulating layer 2 and the intermediate shielding layer 3 from breaking under stress. At the same time, the spiral fit fixes the outer protective layer 4 and the moisture-proof layer 10, preventing interlayer displacement and improving the tensile strength of the sleeve.

[0042] In this utility model, the network cable sheath uses a long strip-shaped sheath body 1 as the core carrier. Through the coordinated operation of a multi-layer structure from the inside out, it achieves comprehensive protection functions such as preventing signal interference, preventing cable collisions, preventing excessive bending, and preventing moisture.

[0043] The inner insulation layer 2 serves as the direct carrier layer of the network cable. Its inner wall has at least six sets of equidistant semi-circular protrusions 5 forming an independent placement cavity 6, which can classify and isolate multiple network cables, prevent collisions and friction between cables, and the silicone layer 13 in the placement cavity 6 further absorbs external impacts, buffers damage to the outer sheath and core wires of the network cable during installation and use, and ensures the integrity of the physical structure of the cable.

[0044] The intermediate shielding layer 3 serves as the core for preventing signal interference. It uses a three-layer structure to block interference in different frequency bands: the corrugated single-sided conductive aluminum foil of the main shielding layer 7 and the 0.1-0.3mm interlayer gap utilize "air reflection + aluminum foil absorption" to block low-frequency interference "30kHz-1MHz"; the copper-graphene composite structure of the conductive cloth layer 8 fills the microscopic pores, eliminates "shielding breaks", and strengthens the shielding of intermediate frequency interference "1MHz-300MHz"; the double-layer reverse spiral tinned copper wire mesh of the braided mesh layer 9 forms a "maze-like" path to block high-frequency interference "300MHz-10GHz". The three layers work together to achieve full-band signal shielding and ensure stable data transmission of the network cable.

[0045] The outer protective layer 4, together with the moisture-proof layer 10 and the spiral structure, forms an external protection system: the moisture-proof layer 10 blocks the infiltration of external moisture, prevents the intermediate shielding layer 3 from failing due to moisture corrosion, and extends the service life of the sleeve; the spiral groove 11 of the moisture-proof layer 10 and the spiral reinforcing rib 12 of the outer protective layer 4 are embedded and cooperate to form an anti-bending zone. When the normal bending is ≤90°, it meets the wiring requirements. When the bending exceeds 120°, the rib groove resists and limits excessive bending, protecting the structural integrity of the inner insulation layer 2 and the intermediate shielding layer 3. At the same time, the spiral cooperation prevents interlayer displacement and improves the tensile strength of the sleeve, ultimately achieving safe protection and stable transmission of the network cable in multiple scenarios.

[0046] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A cable jacket capable of preventing signal interference, comprising a jacket body (1) for loading a network cable, characterized in that: The sleeve body (1) comprises from inside to outside an inner layer insulation layer (2), a middle shielding layer (3) and an outer layer protection layer (4), and further comprises: A semicircular protrusion (5) integrally formed on the inner wall of the inner layer insulation layer (2), wherein a placing cavity (6) for placing a cable is formed on the semicircular protrusion (5); The middle shielding layer (3) is mainly composed of a main shielding layer (7), a conductive cloth layer (8) and a woven mesh layer (9); A reinforcing part for preventing bending is arranged on the outer layer protection layer (4).

2. The signal interference preventing network cable jacket of claim 1, wherein: The reinforcing part comprises a moisture-proof layer (10) arranged between the outer layer protection layer (4) and the woven mesh layer (9), wherein a spiral groove (11) is formed on the moisture-proof layer (10) along the axial direction of the sleeve body (1), and a spiral reinforcing rib (12) is integrally formed on the inner wall of the outer layer protection layer (4) along the axial direction of the sleeve body (1), and the spiral reinforcing rib (12) is embedded in the spiral groove (11) to form a bending prevention area.

3. The signal interference preventing net cable sleeve according to claim 1, characterized in that: The number of the semicircular protrusions (5) is at least six groups, and a plurality of the semicircular protrusions (5) are arranged in a ring shape at equal intervals along the axial direction of the sleeve body (1).

4. The signal interference preventing net cable sleeve according to claim 2, characterized in that: A silica gel layer (13) for buffering is arranged on the inner wall of the placing cavity (6).

5. The signal interference preventing net cable sleeve according to claim 1, wherein: The main shielding layer (7) is a single-sided conductive aluminum foil, and an isosceles trapezoidal corrugation is arranged on the surface of the main shielding layer (7), and the valleys of the isosceles trapezoidal corrugation are bonded to the inner layer insulation layer (2) by means of point-shaped hot melt adhesive.

6. The signal interference preventable network cable jacket according to claim 5, wherein: The gap between the main shielding layer (7) and the inner layer insulation layer (2) ranges from 0.1 to 0.3 mm.

7. The signal interference preventing net cable sleeve according to claim 1, wherein: The material of the conductive cloth layer (8) is mainly composed of a copper coating and a graphene coating, and the conductive cloth layer (8) and the main shielding layer (7) are fixedly connected by means of a nickel-containing conductive adhesive.

8. The signal interference preventing net cable sleeve according to claim 1, wherein: The woven mesh layer (9) is a tinned copper wire woven mesh.

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