Data transmission cable with high transmission performance

Abstract

This utility model discloses a wire-pair shielded data transmission cable with high transmission performance, comprising: a cross-shaped frame, the four isolation walls of the cross-shaped frame having different wall thicknesses, a buffer groove provided at the top of the isolation wall, and a folded groove aligned with the bottom of the buffer groove on the outer wall of the isolation wall, a filling rope and a set of twisted core wires arranged in the cavity between two adjacent isolation walls, aluminum-plastic composite tape wrapped around the twisted core wires, and tinned copper wire braided tape woven on the cross-shaped frame, the tinned copper wire braided tape being in direct contact with the aluminum surface of the aluminum-plastic composite tape, the tinned copper wire braided tape abutting against the twisted core wires and compressing the buffer groove, the groove wall of the buffer groove bending along the folded groove and abutting against the tinned copper wire braided tape after being compressed by the tinned copper wire braided tape, a wrapping tape wrapped around the tinned copper wire braided tape, and a sheath extruded onto the wrapping tape. This utility model has a simple structure and excellent signal shielding performance both internally and externally.

Description

Technical Field

[0001] This utility model relates to the field of cables, and more particularly to a wire-pair shielded data transmission cable with high transmission performance. Background Technology

[0002] With the rapid development of modern communication technologies, the demand for data transmission in emerging fields such as 5G communication, cloud computing, and the Industrial Internet of Things has surged. This places higher demands on the speed and reliability of information transmission systems, requiring cables with excellent high-frequency signal transmission characteristics and strong electromagnetic interference protection capabilities for data transmission. Currently, shielded cables on the market have relatively complex structures and generally offer high shielding performance against external signal interference, but the shielding between the internal twisted-pair cores is insufficient, making them prone to signal crosstalk. Utility Model Content

[0003] The purpose of this invention is to provide a wire-pair shielded data transmission cable with a simple structure that can improve the anti-crosstalk performance between the internal twisted core wires and ensure high shielding performance for external signals, thus providing high transmission performance.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a wire-pair shielded data transmission cable with high transmission performance, comprising: a cross-shaped frame, wherein the wall thicknesses of the four isolation walls of the cross-shaped frame are different, a buffer groove is provided on the top of the isolation wall, and a fold groove aligned with the bottom of the buffer groove is provided on the outer wall of the isolation wall, a filling rope and a set of twisted core wires are provided in the cavity between two adjacent isolation walls, an aluminum-plastic composite tape is wrapped around the twisted core wires, a tinned copper wire braided tape is woven on the cross-shaped frame, the tinned copper wire braided tape is in direct contact with the aluminum surface of the aluminum-plastic composite tape, the tinned copper wire braided tape abuts against the twisted core wires and compresses the buffer groove, the groove wall of the buffer groove is bent along the fold groove and abuts against the tinned copper wire braided tape after being compressed by the tinned copper wire braided tape, a wrapping tape is wrapped around the tinned copper wire braided tape, and a sheath is extruded on the wrapping tape.

[0005] Furthermore, in the aforementioned wire-pair shielded data transmission cable with high transmission performance, the first and second thickest isolation walls are arranged symmetrically about the axis of the cross skeleton, and the remaining two isolation walls are arranged symmetrically about the axis of the cross skeleton.

[0006] Furthermore, in the aforementioned wire-pair shielded data transmission cable with high transmission performance, a central hole is provided in the cross-shaped frame, and a tensile rope is filled in the central hole, wherein the tensile rope is aramid fiber.

[0007] Furthermore, in the aforementioned wire-pair shielded data transmission cable with high transmission performance, the top wall of the buffer groove is an inclined top wall that slopes from the outside in and from top to bottom.

[0008] Furthermore, in the aforementioned high-performance wire-pair shielded data transmission cable, the twist pitch of the four pairs of twisted cores is different and not a multiple, and the twisting direction of the four pairs of twisted cores is the same.

[0009] Furthermore, in the aforementioned wire-pair shielded data transmission cable with high transmission performance, the overlap rate of the aluminum-plastic composite tape wrapping is between 20% and 30%.

[0010] Furthermore, in the aforementioned wire-pair shielded data transmission cable with high transmission performance, the braiding density of the tinned copper wire braid is ≥95%.

[0011] Furthermore, in the aforementioned high-performance wire-pair shielded data transmission cable, the filler rope is made of foamed polyethylene material.

[0012] Furthermore, in the aforementioned wire-pair shielded data transmission cable with high transmission performance, the wrapping tape is made of flame-retardant non-woven fabric.

[0013] The advantages of this invention are as follows: Four sets of twisted-pair cores wrapped with aluminum-plastic composite tape are arranged in the cross-shaped frame. Then, a tin-plated copper wire braided tape, in contact with the aluminum surface of the aluminum-plastic composite tape, is woven onto the cross-shaped frame. A wrapping tape is wrapped around the tin-plated copper wire braided tape, and a sheath is extruded onto the wrapping tape, resulting in a simple overall structure. By setting isolation walls of different wall thicknesses, a gradient electromagnetic shielding can be formed, improving the cross-shaped frame's anti-crosstalk performance. The aluminum-plastic composite tape wrapped around the twisted-pair cores can suppress signal crosstalk between the four sets of twisted-pair cores. The combination of these two aspects improves the anti-crosstalk performance between the four sets of twisted-pair cores in the cross-shaped frame and enhances the signal transmission quality of the twisted-pair cores. Directly weaving the tin-plated copper wire braided tape onto the cross-shaped frame, in conjunction with the aluminum-plastic composite tape, can shield electromagnetic interference across the entire frequency band, improving the shielding effect and effectively reducing the impact of external electromagnetic interference on signal transmission. After the tin-plated copper wire braided tape is compressed against the buffer groove walls of the cross-shaped frame's isolation walls, the connection strength and stability between the tin-plated copper wire braided tape and the cross-shaped frame are improved, preventing loosening and ensuring the electrical performance of the cable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the wire-pair shielded data transmission cable with high transmission performance described in this utility model.

[0015] Figure 2 yes Figure 1 A schematic diagram of the central cruciform skeleton. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and preferred embodiments.

[0017] like Figure 1 , Figure 2As shown, the high-performance wire-pair shielded data transmission cable of this utility model includes: a cross-shaped frame 1, in which tensile ropes 11 are filled. The tensile ropes 11 are made of aramid fibers, which have high mechanical properties and can improve the tensile strength of the cross-shaped frame 1. The four isolation walls 12 of the cross-shaped frame 1 have different wall thicknesses. By setting isolation walls 12 with different wall thicknesses, a gradient electromagnetic shield can be formed, improving the anti-crosstalk performance between the twisted pair cores 3 placed in the cross-shaped frame 1. The first and second thickest isolation walls 12 are arranged symmetrically about the axis of the cross-shaped frame 1, and the remaining two isolation walls 12 are arranged symmetrically about the axis of the cross-shaped frame 1, that is, isolation walls 12 with similar wall thicknesses are arranged symmetrically. To improve the stability of the cross-shaped frame 1, a buffer groove 13 is provided on the top of the isolation wall 12. A crease groove 121 aligned with the bottom of the buffer groove 13 is formed on the outer wall of the isolation wall 12. The top wall of the buffer groove 13 is an inclined top wall that slopes from the outside in and from top to bottom. A filling rope 2 and a set of twisted core wires 3 are placed in the chamber between two adjacent isolation walls 12. Because the wall thickness of each isolation wall 12 is different, the space of each chamber is different. Since the outer diameter of each set of twisted core wires 3 is the same, their positions in the chambers are different when placed in the corresponding chambers. Therefore, filling ropes 2 of different diameters are needed to keep the four sets of twisted core wires 3 round. The filling rope 2 is made of... Made of foamed polyethylene, which has a low dielectric constant, it reduces capacitive coupling and skin effect during signal transmission, ensuring signal transmission quality. Furthermore, foamed polyethylene not only has high bending resistance but also good buffering properties. During filling, it can disperse stress through deformation, preventing deformation of the stranded core wire 3 and ensuring roundness. The twisting pitches of the four pairs of stranded core wires 3 are all different and not multiples of each other, preventing signal resonance between the pairs of stranded core wires 3, thus ensuring the stability and clarity of signal transmission. The twisting directions of the four pairs of stranded core wires 3 are the same, ensuring uniform stress on the four pairs of stranded core wires 3 during use, preventing damage caused by uneven stress. An aluminum-plastic composite tape 4 is wrapped around the stranded core wires 3, with overlapping sections. With a shielding efficiency between 20% and 30%, the aluminum-plastic composite tape 4 not only tightly wraps the stranded core wires 3 but also suppresses crosstalk between the four sets of stranded core wires 4. A tin-plated copper wire braided tape 5 is woven onto the cross-shaped frame 1, directly contacting the aluminum surface of the aluminum-plastic composite tape 4 to form a continuous conductive interface. This effectively reduces the transfer impedance of both the aluminum-plastic composite tape 4 and the tin-plated copper wire braided tape 5, minimizing the impact of electromagnetic interference on signal transmission. Furthermore, the tin-plated copper wire braided tape 5 forms a metal mesh shielding layer, reflecting low-frequency electromagnetic interference through the Faraday cage effect. Meanwhile, the aluminum foil in the aluminum-plastic composite tape 4 can shield high-frequency electromagnetic interference. Therefore, the combination of these two elements is complementary, providing full-band electromagnetic shielding and improving the shielding effect, further reducing the impact of external electromagnetic interference on signal transmission.The braiding density of the tinned copper wire braided tape 5 is ≥95%. The tinned copper wire braided tape 5 abuts against the stranded core wire 3 and compresses the buffer groove 13. After being compressed by the tinned copper wire braided tape 5, the groove wall of the buffer groove 13 bends along the crease groove 121 and adheres to the tinned copper wire braided tape 5, improving the connection strength between the cross frame 1 and the tinned copper wire braided tape 5. The surface of the tinned copper wire braided tape 5 is smooth and provides a support structure with a certain strength. Traditional cross frames have thinner isolation walls, so if the tinned copper wire braided tape 5 is directly braided onto an ordinary cross frame, slippage and loosening may occur between the tinned copper wire braided tape 5 and the ordinary cross frame, which will affect the electrical performance of the cable. In this embodiment, the isolation wall 12 of the cross skeleton 1 is thicker, and a buffer groove 13 is provided on the top of the isolation wall 12. When the tin-plated copper wire braided strip 5 is braided, the tin-plated copper wire braided strip 5 squeezes the two groove walls of the buffer groove 13. After being squeezed, the groove wall will bend outward under the guidance of the inclined top wall and the crease groove 121, which increases the contact area between the groove wall and the tin-plated copper wire braided strip 5. Moreover, the groove wall will generate elasticity after bending, and it will abut against the tin-plated copper wire braided strip 5 through elasticity, thereby improving the connection strength and connection stability between the cross skeleton 1 and the tin-plated copper wire braided strip 5, so that there will be no slippage or loosening between the two, and ensuring the electrical performance of the cable. A wrapping tape 6 is wrapped around the tin-plated copper wire braided strip 5. The wrapping tape 6 is made of flame-retardant non-woven fabric, which has both flame-retardant and moisture-proof functions. A sheath 7 is extruded onto the wrapping tape 6. The wrapping tape 6 prevents direct contact between the tin-plated copper wire braided strip 5 and the sheath 7, preventing them from separating due to mechanical friction during use.

[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. High-performance wire-pair shielded data transmission cables, including: A cross-shaped frame, characterized in that: the four partition walls of the cross-shaped frame have different wall thicknesses; a buffer groove is provided at the top of the partition wall; a crease groove aligned with the bottom of the buffer groove is provided on the outer wall of the partition wall; a filling rope and a set of twisted core wires are provided in the cavity between two adjacent partition walls; an aluminum-plastic composite strip is wrapped around the twisted core wires; a tin-plated copper wire braided strip is woven on the cross-shaped frame; the tin-plated copper wire braided strip is in direct contact with the aluminum surface of the aluminum-plastic composite strip; the tin-plated copper wire braided strip abuts against the twisted core wires and compresses the buffer groove; after being compressed by the tin-plated copper wire braided strip, the groove wall of the buffer groove bends along the crease groove and abuts against the tin-plated copper wire braided strip; a wrapping strip is wrapped around the tin-plated copper wire braided strip; and a sheath is extruded onto the wrapping strip.

2. The wire-pair shielded data transmission cable with high transmission performance according to claim 1, characterized in that: The first and second thickest isolation walls are arranged symmetrically about the left and right sides of the cross-shaped frame axis, while the remaining two isolation walls are arranged symmetrically about the top and bottom of the cross-shaped frame axis.

3. The wire-pair shielded data transmission cable with high transmission performance according to claim 1, characterized in that: A central hole is provided in the cross-shaped frame, and a tensile rope is filled in the central hole. The tensile rope is aramid fiber.

4. The wire-pair shielded data transmission cable with high transmission performance according to claim 1, characterized in that: The top wall of the buffer tank is an inclined top wall that slopes from the outside in and from top to bottom.

5. The wire-pair shielded data transmission cable with high transmission performance according to claim 1, characterized in that: The twisting pitches of the four pairs of stranded cores are all different and not multiples of each other, and the twisting directions of the four pairs of stranded cores are the same.

6. The wire-pair shielded data transmission cable with high transmission performance according to claim 1, characterized in that: The overlap rate of the aluminum-plastic composite tape is between 20% and 30%.

7. The wire-pair shielded data transmission cable with high transmission performance according to claim 1, characterized in that: The braiding density of tin-plated copper wire braided strip is ≥95%.

8. The wire-pair shielded data transmission cable with high transmission performance according to claim 1, characterized in that: The filler rope is made of foamed polyethylene material.

9. The wire-pair shielded data transmission cable with high transmission performance according to claim 1, characterized in that: The strap is made of flame-retardant non-woven fabric.

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