Light data cable with reliable transmission and high strength

Abstract

The utility model relates to a light-weight reliable-transmission high-strength data cable. Four 1 * 0.15 mm light-weight high-temperature data lines, four micropore filling cores and a high-strength filling core stranded cable form a cable core; a PTFE micropore inner protection layer, a polyimide aluminum composite film inner shielding layer, a silver-plated copper-clad aluminum alloy woven outer shielding layer and a PTFE raw material belt sheath are sequentially arranged outside the cable core. According to the structural design, the tensile strength of the product is guaranteed, and meanwhile the filling core is round in appearance, small in outer diameter, small in size and light in weight.

Description

Technical Field

[0001] The utility model relates to a light transmission reliable high-strength data cable, belongs to the field of cable technology, is applied to control systems in the fields of aerospace, aviation, ships, vehicles, and weapon equipment, and is a high-temperature data cable suitable for signal transmission. Background Art

[0002] The common data cables currently available on the market are large in size and heavy in weight and cannot meet the requirements of users for volume and weight. For common data cables, the insulation generally adopts an extruded structure, the shield adopts a braided structure, and the sheath adopts an extruded structure. This structure determines that the product has thick insulation thickness and a large insulation core size; the outer diameter of the shield is large after braiding, and the weight is heavy; the finished cable sheath is thick, the overall size is large, and the weight is heavy. Under the conditions of space and weight restrictions in aerospace, aviation, ships, etc., common data cables often cannot meet the requirements.

[0003] The existing common data cables have unstable structures, and their transmission performance fluctuates greatly, which cannot meet the use requirements. The insulation and conductors of common data cables are greatly affected by factors such as raw materials, processing technology, and processing equipment, and their consistency is poor; the core of common data cables is mostly filled in a single way, and the core structure is not stable enough. When the cable is bent or squeezed, the overall dielectric constant of the core will change, affecting the transmission performance of the cable.

[0004] The existing common data cables have low tensile strength and generally cannot be used under pulling or tensile resistance conditions. The pulling and tensile resistance performance is not considered in the structural design of common data cables, and the part that can withstand the tensile force is not designed in the product structure. Therefore, when the product is pulled by external force or has tensile resistance performance requirements, the cable core, shielding, and sheath will directly bear the tensile force. Under excessive tensile force, these parts will break and cause product failure. Summary of the invention

[0005] In view of the deficiencies in the prior art, the utility model provides a data cable with small size, light weight, stable transmission and excellent tensile performance.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: a light transmission reliable high-strength data cable, 4 1×0.15mm² light high-temperature data lines, 4 microporous filling cores and high-strength filling core twisted cables constitute the cable core; the cable core is sequentially provided with a PTFE microporous inner sheath, a polyimide aluminum composite film inner shielding layer, a silver-plated copper clad aluminum alloy braided outer shielding layer and a PTFE raw tape sheath.

[0007] The beneficial effects of the utility model are as follows: the conductor of the utility model adopts a silver-plated copper wire core, and the conductor is subjected to a compacting process. On the basis of ensuring its electrical properties, it also has a smaller size and a relatively lighter weight, a more stable structure, and a higher consistency in outer diameter; the insulating layer adopts a combined structure of a wrapped PTFE film inner insulating layer and a wrapped FEP / PI / FEP composite film outer insulating layer, and this structure makes the insulation outer diameter of the product smaller and the volume lighter; the core filling adopts a PTFE microporous core filling, and this material as a core filling can effectively reduce the weight of the product; the shielding adopts a combined structure of a wrapped polyimide aluminum composite film inner shielding layer and a braided silver-plated copper-clad aluminum alloy outer shielding layer, and this design also makes the product outer diameter smaller and lighter.

[0008] When twisting cables, the utility model adopts a combination of center filling and multi-point filling, and adds a high-strength filling core in the center of four 1×0.15mm² light high-temperature data cables. The high-strength filling core fully considers the tensile strength it should bear during structural design, and its inner core is twisted by high-strength aramid yarns, and the inner core is wrapped with PTFE raw tape; microporous filling cores are filled in the adjacent gaps of the 1×0.15mm² light high-temperature data cables. This material selection and structural design not only ensures the tensile strength of the product, but also makes the filling core more rounded in appearance, smaller in outer diameter, smaller in volume, and lighter in weight. The structure of the cable core is more stable, and the overall dielectric constant is more uniform and consistent, ensuring the stability and consistency of the cable transmission performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model;

[0010] Figure 2 For the utility model 1×0.15mm 2 Schematic diagram of the structure of a lightweight high-temperature data cable;

[0011] Figure 3 It is a structural schematic diagram of the high-strength filling core of the utility model.

[0012] In the figure: 1. 1×0.15mm² lightweight high-temperature data cable; 1-1. Conductor; 1-2. PTFE film inner insulation layer; 1-3. FEP / PI / FEP composite film outer insulation layer; 2. High-strength filling core; 2-1. High-strength aramid yarn; 2-2. PTFE raw tape; 3. Microporous filling core; 4. PTFE microporous inner sheath; 5. Polyimide aluminum composite film inner shielding layer; 6. Silver-plated copper clad aluminum alloy braided outer shielding layer; 7. PTFE raw tape sheath. DETAILED DESCRIPTION

[0013] like Figures 1 to 3 As shown, a light transmission reliable high strength data cable, including 1×0.15mm 2Light high temperature data cable 1, high strength filling core 2, microporous filling core 3, PTFE microporous inner sheath 4, polyimide aluminum composite film inner shielding layer 5, silver-plated copper clad aluminum alloy braided outer shielding layer 6 and PTFE raw tape sheath 7; a high strength filling core 2 is arranged in the center of 4 1×0.15mm² light high temperature data cables 1, and a microporous filling core 3 is arranged between each two adjacent 1×0.15mm² light high temperature data cables 1 to form a cable core after twisting, a PTFE microporous inner sheath 4 is wrapped around the cable core, a polyimide aluminum composite film inner shielding layer 5 is wrapped around the PTFE microporous inner sheath 4, a silver-plated copper clad aluminum alloy outer shielding layer 6 is woven outside the polyimide aluminum composite film inner shielding layer 5, and a PTFE raw tape sheath 7 is wrapped around the silver-plated copper clad aluminum alloy outer shielding layer 6.

[0014] 1×0.15mm 2 The light high temperature data line 1 is composed of a conductor 1-1 composed of several silver-plated copper conductive wire cores, which is sequentially wrapped with a PTFE film inner insulation layer 1-2 and a FEP / PI / FEP composite film outer insulation layer 1-3.

[0015] The high-strength filling core 2 is composed of a high-strength aramid yarn 2-1 wrapped with a PTFE raw tape 2-2.

[0016] The stability and consistency of the cable transmission performance are fully considered in the structural design, material selection and manufacturing of the conductor and insulation layer of the utility model. When manufacturing the conductor 1-1, several silver-plated copper conductive wire cores are pressed by a mold. After pressing, the structure of the conductor 1-1 is more stable and the outer diameter consistency is higher. When the inner and outer insulation layers are wrapped, guide wheels and clamps are installed on the wrapping machine to stabilize the wrapping angle during wrapping and prevent the wrapping point from shifting. At the same time, after wrapping, the product passes through a conical alloy mold to make the insulation outer diameter of the cable more stable and more consistent. When twisting the cable, a combination of center filling and multi-point filling is adopted. A high-strength filling core is filled in the center of the cable, and microporous filling cores are filled between the gaps of each light high-temperature data line. This structural design can make the structure of the cable core more stable and the overall dielectric constant more uniform and consistent, ensuring the stability and consistency of the cable transmission performance.

Claims

1. A light-weight, reliable, high-strength data cable, characterized by: Four 1×0.15 mm² light high-temperature data cables (1), four microporous filling cores (3) and a high-strength filling core (2) are twisted into a cable core; the cable core is provided with a PTFE microporous inner sheath (4), a polyimide aluminum composite film inner shielding layer (5), a silver-plated copper-clad aluminum alloy braided outer shielding layer (6) and a PTFE raw tape sheath (7) in sequence.

2. A light-weight, reliable, and high-strength data cable according to claim 1, characterized in that: The structure of the cable core is that a high-strength filling core (2) is arranged at the center of four 1×0.15 mm² light high-temperature data cables (1), and a microporous filling core (3) is arranged between each of the four 1×0.15 mm² light high-temperature data cables (1).

3. A light-weight, reliable, and high-strength data cable according to claim 1, characterized in that: 1×0.15mm 2 A light high-temperature data cable (1) is composed of a conductor (1-1) consisting of a plurality of silver-plated copper conductive wire cores, and a PTFE film inner insulation layer (1-2) and a FEP / PI / FEP composite film outer insulation layer (1-3) are sequentially wrapped around the conductor.

4. A light-weight, reliable, and high-strength data cable according to claim 1, characterized in that: The high-strength filling core (2) is composed of high-strength aramid yarns (2-1) wrapped with PTFE raw tapes (2-2).

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