A super category 7 data cable with a protective armor

Abstract

The present invention belongs to the technical field of cables, and specifically relates to a super seven - category data cable with a protective armor, which includes eight conductors. A uniformly - thick insulating layer is wrapped around the outside of each conductor. Every two conductors are twisted in pairs, and a uniformly - thick aluminum foil is commonly wrapped around the outside of every two conductors twisted in pairs. Each conductor is a tandem solid - core oxygen - free copper. A braided layer is coated on the outer periphery of multiple groups of the aluminum foils. A tearing rope is arranged on the braided layer, and a sheath assembly is coated on the outer periphery of the braided layer; through the double - layer shielding structure on the aluminum foil and the braided layer, and adopting the all - foamed process for the core wires, the high - frequency signal transmission of the cable and excellent electromagnetic interference resistance are realized, the overall shear - resistance and tensile - resistance capabilities of the sheath assembly are strengthened, and the protection effect of the cable outer surface on the inner cable core is further improved.

Description

Technical Field

[0001] The present invention relates to the field of cables, and more particularly to a super category 7 data cable with a protective armor. Background Art

[0002] CAT7A exceeds the 10Gbps transmission requirement, providing the best speed and the best total cost of ownership in the industry. Its unique sharing ability provides a more "green" solution for supporting low-speed applications and reduces the upfront investment by reducing the number of cables. CAT7A will be more and more widely used in the construction of data centers and enterprise local area networks. With the emergence of 5G Ethernet and the construction of future 6G projects, CAT7A has attracted the strong development and promotion of well-known domestic and foreign cabling companies and communication equipment manufacturers.

[0003] At present, the transmission bandwidth of category 6A and category 7 data cables on the market can only reach 600MHz at most, which can only meet the general data center requirements. If tested at frequencies higher than 600MHz, their performance indicators will show abnormal fluctuations or poor performance. This is because the structural stability and process design of the cables cannot meet the signal transmission requirements of high-frequency bands. In addition, the cable sheath of the existing data cables does not provide an ideal protection for the cable cores inside. The cable cores are easily damaged during the dragging and bending process of the cable. Therefore, a super category 7 data cable with a protective armor is needed to solve these problems. Summary of the Invention

[0004] In order to make up for the problems that the existing technology can only reach a transmission bandwidth of 600MHz at most, which can only meet the general data center requirements, and the cable sheath of the data cable does not provide an ideal protection for the cable cores inside, the present invention proposes a super category 7 data cable with a protective armor.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a super category 7 data cable with a protective armor, including eight conductors. Each conductor is wrapped with an insulating layer of uniform thickness. Every two conductors are twisted in pairs, and a layer of aluminum foil of uniform thickness is commonly wrapped outside every two twisted conductors. Each conductor is a tandem solid oxygen-free copper. A braided layer is provided on the outer periphery of multiple groups of aluminum foils. A tearing cord is provided on the braided layer, and a sheath assembly is provided on the outer periphery of the braided layer; through the double shielding structure on the aluminum foil and the braided layer, and adopting the full-foaming process for the core wires, the high-frequency signal transmission and excellent electromagnetic interference resistance of the cable are realized.

[0006] Preferably, a skeleton assembly is fixedly arranged at the central axis of the braided layer. A plurality of groups of the aluminum foils are arranged in a ring around the outer periphery of the skeleton assembly. The skeleton assembly includes an intermediate skeleton and a plurality of groups of side skeletons. The number of the plurality of groups of side skeletons matches the number of the aluminum foils, and the plurality of groups of sides are evenly arranged on the outer peripheral side wall of the intermediate skeleton. The side skeletons are arranged parallel to the intermediate skeleton. By arranging the intermediate skeleton and the plurality of groups of side skeletons at the axis of the braided layer, each group of aluminum foils can be separated and supported, ensuring the stability of the overall structure of the cable.

[0007] Preferably, the sheath assembly includes a low-smoke and halogen-free outer sheath, an armor layer, and an inner lining layer. The armor layer is located between the low-smoke and halogen-free outer sheath and the inner lining layer. The inner lining layer is arranged close to the braided layer. The sheath assembly composed of multiple layers of the low-smoke and halogen-free outer sheath, the armor layer, and the inner lining layer can provide good protection and support for the cable core inside.

[0008] Preferably, the armor layer includes a copper wire braided armor, a galvanized steel wire braided armor, a first self-adhesive layer, and a second self-adhesive layer. The copper wire braided armor and the galvanized steel wire braided armor are located between the first self-adhesive layer and the second self-adhesive layer. One side of the first self-adhesive layer adheres to the outer side of the inner lining layer, and the side of the first self-adhesive layer away from the inner lining pad adheres to the copper wire braided armor. The copper wire braided armor and the galvanized steel wire braided armor are fixedly attached. One side of the second self-adhesive layer adheres to the inner wall of the low-smoke and halogen-free outer sheath, and the side of the second self-adhesive layer away from the low-smoke and halogen-free outer sheath adheres to the galvanized steel wire braided armor. The armor layer composed of multiple layers of the copper wire braided armor, the galvanized steel wire braided armor, the first self-adhesive layer, and the second self-adhesive layer is relatively firmly connected, can have strong anti-bending and anti-extrusion capabilities, has high axial and radial connection strengths itself, and has a long service life.

[0009] Preferably, a plurality of groups of axially distributed and evenly arranged axial reinforcing ribs are press-fitted inside both the copper wire braided armor and the galvanized steel wire braided armor. A plurality of groups of evenly distributed annular reinforcing ribs are also fixedly connected between the plurality of groups of axial reinforcing ribs; this greatly enhances the axial and radial connection strengths of the copper wire braided armor and the galvanized steel wire braided armor, thereby indirectly enhancing the overall shear and tensile resistance capabilities of the sheath assembly and improving the protection effect of the sheath assembly on the cable core inside.

[0010] Preferably, the plurality of groups of annular reinforcing ribs are linearly and evenly arranged along the axis of the armor layer. The diameter of each annular reinforcing rib is one-third to one-half of the diameter of the axial reinforcing rib; the purpose of this design is to reduce costs while ensuring the connection strength of the armor layer, and reduce the production and processing difficulty.

[0011] Preferably, a plurality of groups of uniformly distributed protrusions are provided on the side of the first self-adhesive layer close to the inner lining cushion layer, and recesses matching the plurality of groups of protrusions are formed on the inner lining cushion layer; this greatly increases the bonding surface area between the armor layer and the inner lining cushion layer, improves the adhesion strength between the armor layer and the inner lining cushion layer, and prevents the two from separating.

[0012] Preferably, drainage lines are provided on the braided layer, and the drainage lines are made of tinned copper material; this enables the cable designed by the present invention to have a lightning protection function, thereby greatly reducing the probability of lightning strike faults occurring in the cable.

[0013] Preferably, the low-smoke and halogen-free outer sheath is made of PVC polyvinyl chloride material, and the inner lining cushion layer is made of polyolefin material, and the thickness of the inner lining cushion layer is two-thirds of the thickness of the low-smoke and halogen-free outer sheath; the low-smoke and halogen-free outer sheath made of PVC polyvinyl chloride material also has the characteristic of flame retardancy, reducing the probability of the cable causing a fire.

[0014] Preferably, a plurality of groups of uniformly distributed protrusions are also provided on the side of the second self-adhesive layer close to the low-smoke and halogen-free outer sheath, and recesses matching the plurality of groups of protrusions are also formed on the low-smoke and halogen-free outer sheath; this greatly increases the bonding surface area between the armor layer and the low-smoke and halogen-free outer sheath, improves the adhesion strength between the armor layer and the low-smoke and halogen-free outer sheath, and thus improves the overall tensile resistance of the cable.

[0015] The advantages of the present invention are as follows:

[0016] 1. The conductor is a tandem solid oxygen-free copper, the insulating layer uses a physical foaming process and adopts a skin-foam-skin structure. The aluminum foil is used to increase the anti-electromagnetic interference ability of the cable, and the setting of the braided layer also achieves an ultra-strong shielding effect. Through the double-layer shielding structure on the aluminum foil and the braided layer, and adopting the all-foaming process for the core wires, the high-frequency signal transmission and excellent anti-electromagnetic interference ability of the cable are realized;

[0017] 2. The sheath assembly composed of multiple layers of the low-smoke and halogen-free outer sheath, the armor layer and the inner lining cushion layer can provide good protection and support for the cable core inside. The armor layer composed of multiple layers of copper wire braided armor, galvanized steel wire braided armor, the first self-adhesive layer and the second self-adhesive layer is firmly connected, can have strong anti-bending and anti-extrusion capabilities, has high axial and radial connection strengths itself, and has a long service life. Through the setting of the axial reinforcing ribs and multiple groups of annular reinforcing ribs, the axial and radial connection strengths of the copper wire braided armor and the galvanized steel wire braided armor are greatly enhanced, thereby indirectly strengthening the overall shear and tensile resistance of the sheath assembly, and further improving the protection effect of the sheath assembly on the cable core inside;

[0018] 3. By providing raised portions on both sides of the armor layer and recessed portions on the inner lining cushion layer and the low-smoke and halogen-free outer sheath, the bonding surface area between the armor layer and the inner lining cushion layer and the low-smoke and halogen-free outer sheath is greatly increased, the adhesion strength among the three is improved, and the separation among the three is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of the overall radial cross-sectional structure of Embodiment 1;

[0021] Figure 2 It is a schematic diagram of the skeleton assembly structure of Embodiment 1;

[0022] Figure 3 It is a schematic diagram of the partial axial cross-sectional structure of the armor layer of Embodiment 1;

[0023] Figure 4 It is a schematic diagram of the matching structure between the inner lining cushion layer and the armor layer of Embodiment 1;

[0024] Figure 5 It is a schematic diagram of the matching structure between the low-smoke and halogen-free outer sheath and the armor layer of Embodiment 1;

[0025] Figure 6 It is a schematic diagram of the radial cross-section of the axial reinforcing rib and the longitudinal reinforcing rib of Embodiment 1;

[0026] Figure 7 It is a schematic diagram of the connection structure between the axial reinforcing rib and the longitudinal reinforcing rib of Embodiment 1.

[0027] In the figure: 1 conductor, 2 insulating layer, 3 aluminum foil, 4 braided layer, 5 tearing cord, 6 sheath assembly, 7 low-smoke and halogen-free outer sheath, 8 armor layer, 801 copper wire braided armor, 802 galvanized steel wire braided armor, 803 first self-adhesive layer, 804 second self-adhesive layer, 805 axial reinforcing rib, 806 annular reinforcing rib, 9 inner lining cushion layer, 10 skeleton assembly, 101 intermediate skeleton, 102 side skeleton, 11 raised portion, 12 recessed portion, 13 drainage line. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0029] Please refer to Figure 1-7 As shown, a super category 7 data cable with a protective armor includes eight conductors 1. A uniformly thick insulating layer 2 is wrapped around each conductor 1. Every two conductors 1 are twisted in pairs, and a uniformly thick aluminum foil 3 is commonly wrapped around every two twisted conductors 1. Each conductor 1 is a tandem solid oxygen-free copper. A braided layer 4 is provided on the outer periphery of multiple groups of aluminum foils 3. A tearing cord 5 is provided on the braided layer 4, and a sheath assembly 6 is provided on the outer periphery of the braided layer 4; the insulating layer 2 uses a physical foaming process and adopts a skin-foam-skin structure. The material of the insulating layer 2 is selected from high-density polyethylene (HDPE), high-density foaming material (HDPE / F), and low-density polyethylene (LDPE). Its material feature is that the dielectric constant is relatively low, which has a greater impact on the attenuation performance of the cable at high frequencies. The aluminum foil 3 uses a pair-by-pair shielding method to increase the electromagnetic interference resistance of the cable. The aluminum foil 3 mainly plays a role in shielding protection. The braided layer 4 is provided to achieve an ultra-strong shielding effect. Through the double-layer shielding structure on the aluminum foil 3 and the braided layer 4, the all-foamed process of the core wires is adopted, so as to realize the high-frequency signal transmission of the cable and excellent electromagnetic interference resistance.

[0030] As a specific embodiment of the present invention, a skeleton assembly 10 is fixedly provided at the central axis of the braided layer 4. Multiple groups of aluminum foils 3 are arranged in a ring around the skeleton assembly 10. The skeleton assembly 10 includes an intermediate skeleton 101 and multiple groups of side skeletons 102. The number of multiple groups of side skeletons 102 matches the number of aluminum foils 3, and multiple groups of sides are evenly provided on the outer side wall of the intermediate skeleton 101. The side skeletons 102 are arranged parallel to the intermediate skeleton 101; by providing the intermediate skeleton 101 and multiple groups of side skeletons 102 at the axis of the braided layer 4, each group of aluminum foils 3 can be separated and supported, ensuring the stability of the overall structure of the cable.

[0031] As a specific embodiment of the present invention, the sheath assembly 6 includes a low-smoke and halogen-free outer sheath 7, an armor layer 8, and an inner lining layer 9. The armor layer 8 is located between the low-smoke and halogen-free outer sheath 7 and the inner lining layer 9. The inner lining layer 9 is arranged close to the braided layer 4; the sheath assembly 6 composed of multiple layers of the low-smoke and halogen-free outer sheath 7, the armor layer 8, and the inner lining layer 9 can provide a good protection and support effect for the cable core inside.

[0032] As a specific embodiment of the present invention, the armor layer 8 includes a copper wire braided armor 801, a galvanized steel wire braided armor 802, a first self-adhesive layer 803 and a second self-adhesive layer 804. The copper wire braided armor 801 and the galvanized steel wire braided armor 802 are located between the first self-adhesive layer 803 and the second self-adhesive layer 804. One side of the first self-adhesive layer 803 adheres to the outer side of the inner lining layer 9, and the side of the first self-adhesive layer 803 away from the inner lining pad adheres to the copper wire braided armor 801. The copper wire braided armor 801 and the galvanized steel wire braided armor 802 are fixedly attached. One side of the second self-adhesive layer 804 adheres to the inner wall of the low-smoke and halogen-free outer sheath 7, and the side of the second self-adhesive layer 804 away from the low-smoke and halogen-free outer sheath 7 adheres to the galvanized steel wire braided armor 802. The armor layer 8 composed of multiple layers of the copper wire braided armor 801, the galvanized steel wire braided armor 802, the first self-adhesive layer 803 and the second self-adhesive layer 804 is relatively firmly connected, capable of having strong anti-bending and anti-extrusion capabilities, having high axial and radial connection strengths itself, and having a long service life.

[0033] As a specific embodiment of the present invention, multiple groups of uniformly distributed axial reinforcing ribs 805 are press-fitted inside both the copper wire braided armor 801 and the galvanized steel wire braided armor 802, and multiple groups of uniformly distributed annular reinforcing ribs 806 are also fixedly connected between the multiple groups of axial reinforcing ribs 805. Through the arrangement of the axial reinforcing ribs 805 and the multiple groups of annular reinforcing ribs 806, the axial and radial connection strengths of the copper wire braided armor 801 and the galvanized steel wire braided armor 802 are greatly enhanced, thereby indirectly strengthening the overall shear resistance and tensile strength of the sheath assembly 6, and improving the protection effect of the sheath assembly 6 on the inner cable core therein.

[0034] As a specific embodiment of the present invention, multiple groups of annular reinforcing ribs 806 are linearly and uniformly arranged along the axis of the armor layer 8, and the diameter of each annular reinforcing rib 806 is one-third to one-half of the diameter of the axial reinforcing rib 805. The purpose of such a design is to reduce costs while ensuring the connection strength of the armor layer 8 and reducing the production and processing difficulty.

[0035] As a specific embodiment of the present invention, multiple groups of uniformly distributed protrusions 11 are provided on the side of the first self-adhesive layer 803 close to the inner lining layer 9, and recesses 12 matching the multiple groups of protrusions 11 are formed on the inner lining layer 9. By forming the recesses 12 on the inner lining layer 9 and providing the protrusions 11 on the first self-adhesive layer 803, the bonding surface area between the armor layer 8 and the inner lining layer 9 is greatly increased, the adhesion strength between the armor layer 8 and the inner lining layer 9 is improved, and the separation of the two is avoided.

[0036] As a specific embodiment of the present invention, a drainage line 13 is provided on the braided layer 4, and the drainage line 13 is made of tinned copper material; through the arrangement of the drainage line 13, the cable designed by the present invention has a lightning protection function, thereby greatly reducing the probability of lightning strike faults occurring in the cable.

[0037] As a specific embodiment of the present invention, the low-smoke and halogen-free outer sheath 7 is made of PVC polyvinyl chloride material, and the inner lining layer 9 is made of polyolefin material, and the thickness of the inner lining layer 9 is two-thirds of the thickness of the low-smoke and halogen-free outer sheath 7; both the inner lining layer 9 and the low-smoke and halogen-free outer sheath 7 are made of environmentally friendly materials, and the low-smoke and halogen-free outer sheath 7 made of PVC polyvinyl chloride material also has the characteristic of flame retardancy, reducing the probability of the cable causing a fire.

[0038] As a specific embodiment of the present invention, a plurality of groups of uniformly distributed convex portions 11 are also provided on the side of the second self-adhesive layer 804 close to the low-smoke and halogen-free outer sheath 7, and a plurality of concave portions 12 matching the plurality of groups of convex portions 11 are also provided on the low-smoke and halogen-free outer sheath 7. By providing the concave portions 12 on the low-smoke and halogen-free outer sheath 7 and the convex portions 11 on the second self-adhesive layer 804, the bonding surface area between the armor layer 8 and the low-smoke and halogen-free outer sheath 7 is greatly increased, and the adhesion strength between the armor layer 8 and the low-smoke and halogen-free outer sheath 7 is improved, thereby improving the overall tensile resistance of the cable.

[0039] Working principle: Each conductor 1 is formed by arranging solid oxygen-free copper in series, and then eight conductors are paired and twisted in pairs. An aluminum foil 3 is commonly coated on the outer periphery of each pair of conductors 1. The braided layer 4 is provided to achieve an ultra-strong shielding effect. Through the double-layer shielding structure on the aluminum foil 3 and the braided layer 4, and adopting the all-foaming process for the core wire, the high-frequency signal transmission and excellent electromagnetic interference resistance of the cable are realized. The outer periphery of the braided layer 4 is coated with a sheath assembly 6, which can better protect the cable core and greatly improve the axial and radial connection strength of the cable.

[0040] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0041] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A super seven - category data cable with a protective armor, characterized in that: It includes eight conductors (1), each of the conductors (1) is wrapped with an insulating layer (2) with a uniform thickness. Every two of the conductors (1) are twisted in pairs, and a layer of aluminum foil (3) with a uniform thickness is commonly wrapped outside every two twisted conductors (1). Each of the conductors (1) is a tandem solid oxygen-free copper. A braided layer (4) is provided on the outer periphery of multiple groups of the aluminum foil (3). A tearing cord (5) is provided on the braided layer (4), and a sheath assembly (6) is provided on the outer periphery of the braided layer (4); A skeleton assembly (10) is fixedly provided at the central axis of the braided layer (4). Multiple groups of the aluminum foil (3) are arranged in a ring on the outer periphery of the skeleton assembly (10). The skeleton assembly (10) includes an intermediate skeleton (101) and multiple groups of side skeletons (102). The number of multiple groups of the side skeletons (102) matches the number of the aluminum foil (3), and multiple groups of the side skeletons are evenly provided on the outer side wall of the intermediate skeleton (101). The side skeletons (102) are arranged parallel to the intermediate skeleton (101); The sheath assembly (6) includes a low-smoke and halogen-free outer sheath (7), an armor layer (8), and an inner lining layer (9). The armor layer (8) is located between the low-smoke and halogen-free outer sheath (7) and the inner lining layer (9). The inner lining layer (9) is arranged close to the braided layer (4); The armor layer (8) includes a copper wire braided armor (801), a galvanized steel wire braided armor (802), a first self-adhesive layer (803), and a second self-adhesive layer (804). The copper wire braided armor (801) and the galvanized steel wire braided armor (802) are located between the first self-adhesive layer (803) and the second self-adhesive layer (804). One side of the first self-adhesive layer (803) adheres to the outer side of the inner lining layer (9), and the side of the first self-adhesive layer (803) away from the inner lining adheres to the copper wire braided armor (801). The copper wire braided armor (801) and the galvanized steel wire braided armor (802) are fixedly attached. One side of the second self-adhesive layer (804) adheres to the inner wall of the low-smoke and halogen-free outer sheath (7), and the side of the second self-adhesive layer (804) away from the low-smoke and halogen-free outer sheath (7) adheres to the galvanized steel wire braided armor (802); Multiple groups of uniformly distributed axial reinforcing ribs (805) are press-fitted inside both the copper wire braided armor (801) and the galvanized steel wire braided armor (802). Multiple groups of uniformly distributed annular reinforcing ribs (806) are also fixedly connected between multiple groups of the axial reinforcing ribs (805). Multiple groups of the annular reinforcing ribs (806) are linearly and evenly arranged along the axis of the armor layer (8). The diameter of each of the annular reinforcing ribs (806) is one-third to one-half of the diameter of the axial reinforcing ribs (805).

2. The super seven - category data cable with a protective armor according to claim 1, characterized in that: Multiple groups of uniformly distributed protrusions (11) are provided on the side of the first self-adhesive layer (803) close to the inner lining layer (9), and depressions (12) matching the multiple groups of protrusions (11) are provided on the inner lining layer (9).

3. The super seven - category data cable with a protective armor according to claim 2, characterized in that: A drainage line (13) is provided on the braided layer (4). The drainage line (13) is made of tinned copper material.

4. The super seven - category data cable with a protective armor according to claim 3, wherein: The low-smoke and halogen-free outer sheath (7) is made of PVC polyvinyl chloride material, and the inner lining layer (9) is made of polyolefin material, and the thickness of the inner lining layer (9) is two-thirds of the thickness of the low-smoke and halogen-free outer sheath (7).

5. The super seven - category data cable with a protective armor according to claim 4, characterized in that: On the side of the second self-adhesive layer (804) close to the low-smoke and halogen-free outer sheath (7), a plurality of uniformly distributed convex portions (11) are also provided, and recessed portions (12) matching the plurality of convex portions (11) are also formed on the low-smoke and halogen-free outer sheath (7).

Images