Ultra-light high-strength high-temperature-resistant data bus

Abstract

An ultra-light high-strength high-temperature-resistant data bus belongs to the technical field of data cables, and is characterized in that two ultra-light high-temperature-resistant data lines, two ultra-light high-strength filling cores and four high-temperature-resistant light filling cores form a cable core; a polytetrafluoroethylene micropore inner protective layer, a polyimide aluminum composite film inner shielding layer, a silver-plated copper-clad aluminum alloy braided outer shielding layer and a polytetrafluoroethylene raw material belt outer sheath are sequentially arranged outside the cable core; the specific structure of the cable core is that an ultra-light high-strength filling core is arranged between the two ultra-light high-temperature-resistant data lines, and a high-temperature-resistant light filling core is arranged between the two ultra-light high-temperature-resistant data lines and the two ultra-light high-strength filling cores. The conductors and insulating materials of the ultra-light high-temperature-resistant data line are high-temperature-resistant materials, and the data line can be used for a long time at the temperature of 250 DEG C.

Description

Technical Field

[0001] The utility model relates to an ultralight, high-strength, high-temperature-resistant data bus, belongs to the technical field of data cables, is applied to control and signal transmission between electronic equipment and communication systems in aerospace and weapon equipment, and is an ultralight, high-strength, high-temperature-resistant, low-attenuation data bus. Background Art

[0002] At present, the common data buses on the market mostly use solid structures for insulation, filling cores and sheaths, with high material density, and the shielding uses a woven double-layer metal wire structure. This design makes the overall volume and weight of the cable larger. When the user's usage conditions are weight-restricted or laid in a small space, the ordinary data bus will not be able to meet the user's requirements due to its disadvantages such as overweight and volume.

[0003] The existing ordinary data bus does not take the tensile performance of the cable into consideration during design, and has a low tensile strength. When the cable is pulled by external force, the conductor and insulation of the cable will be the first to be stressed. The stretched conductor and insulation will deform or even break, causing the cable performance to deteriorate or even fail.

[0004] Existing ordinary data bus insulation, filling core, sheath and other cable components are mostly made of room temperature materials or materials with a temperature resistance not exceeding 150°C. When the ambient temperature exceeds the material's tolerance temperature range, the cable's insulation, sheath and other components will quickly soften or even fail, causing the cable to fail to work properly. Summary of the invention

[0005] In view of the shortcomings of the data bus in the prior art, such as heavy overall weight, large volume, poor tensile performance and low operating temperature, the utility model provides an ultra-light, high-strength and high-temperature resistant data bus, which is a data bus with comprehensive functions, small volume and light weight, high tensile strength, high temperature resistance and excellent environmental adaptability.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: an ultra-light high-strength high-temperature resistant data bus, two ultra-light high-strength filling cores and four high-temperature resistant light filling cores constitute a cable core; the cable core is provided with a polytetrafluoroethylene microporous inner sheath, a polyimide aluminum composite film inner shielding layer, a silver-plated copper-clad aluminum alloy braided outer shielding layer and a polytetrafluoroethylene raw tape outer sheath in sequence;

[0007] The specific structure of the cable core is that an ultralight high-strength filling core is respectively arranged between two ultralight high-temperature resistant data cables, and a high-temperature resistant light filling core is respectively arranged between the two ultralight high-temperature resistant data cables and the two ultralight high-strength filling cores.

[0008] The beneficial effects of the utility model are as follows: the conductor and the insulating material of the ultra-light high-temperature resistant data line of the utility model are both high-temperature resistant materials and can be used for a long time at 250°C.

[0009] The data bus is light in weight, small in size, has excellent transmission performance, and also has excellent tensile strength and high operating temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 This is a schematic diagram of the structure of the ultra-light data cable core of the utility model;

[0012] Figure 3 This is a schematic diagram of the structure of the ultra-light reinforced filling core of the utility model.

[0013] In the figure: 1. Ultra-light and high-temperature resistant data cable; 1-1. Silver-plated copper alloy conductive core; 1-2. Fusible polytetrafluoroethylene inner insulation layer; 1-3. Fusible polytetrafluoroethylene foam insulation layer; 1-4. Fusible polytetrafluoroethylene outer insulation layer; 2. Ultra-light and high-strength filling core; 2-1. High-strength aramid yarn; 2-2. Fusible polytetrafluoroethylene inner sheath; 2-3. Fusible polytetrafluoroethylene foam middle layer; 2-4. Fusible polytetrafluoroethylene outer sheath; 3. High-temperature resistant light filling core; 4. Polytetrafluoroethylene microporous inner sheath; 5. Polyimide aluminum composite film inner shielding layer; 6. Silver-plated copper clad aluminum alloy braided outer shielding layer; 7. Polytetrafluoroethylene raw tape outer sheath. DETAILED DESCRIPTION

[0014] like Figure 1 As shown, an ultra-light high-strength high-temperature resistant data bus comprises an ultra-light high-temperature resistant data line 1, an ultra-light high-strength filling core 2, a high-temperature resistant light filling core 3, a polytetrafluoroethylene 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 polytetrafluoroethylene raw tape outer sheath 7. Two ultra-light high-temperature resistant data lines 1, two ultra-light high-strength filling cores 2, and four high-temperature resistant light filling cores 3 are twisted to form a cable core; a layer of polytetrafluoroethylene microporous inner sheath 4 is extruded out of the cable core in sequence, a layer of polyimide aluminum composite film inner shielding layer 5 is wrapped, a layer of silver-plated copper-clad aluminum alloy braided outer shielding layer 6 is woven, and a layer of polytetrafluoroethylene raw tape outer sheath 7 is wrapped.

[0015] The inner shielding layer of the utility model adopts a wrapped polyimide aluminum composite film structure, and the outer shielding layer adopts a braided silver-plated copper-clad aluminum alloy wire structure. This design makes the product lighter and also ensures the shielding efficiency of the product.

[0016] The outer sheath of the utility model adopts a wrapped polytetrafluoroethylene raw tape structure. This design makes the overall size of the cable smaller and the weight lighter, and also makes the product softer.

[0017] The selection of materials for ultra-light high-strength filling core, high-temperature resistant light filling core, inner sheath, shielding layer and outer sheath all take into account the use conditions in which the cable may be exposed to high temperature environment for a long time. The temperature resistance grade is 250℃, which can ensure the normal operation of the cable in high temperature environment.

[0018] like Figure 2 The ultra-light high temperature resistant data cable 1 is composed of several silver-plated copper alloy conductive wire cores 1-1, a fusible polytetrafluoroethylene inner insulation layer 1-2 is extruded outside the fusible polytetrafluoroethylene inner insulation layer 1-2, and a fusible polytetrafluoroethylene outer insulation layer 1-4 is extruded outside the fusible polytetrafluoroethylene foam insulation layer 1-3; several silver-plated copper alloy conductive wire cores are used as conductors, which have excellent tensile strength, can ensure that the conductor does not break when the cable is stretched by external force, and have the characteristics of small size and light weight. The combined structure of the insulation layer has extremely light weight while ensuring the transmission performance of the cable, and compared with other insulation forms, this insulation structure is more stable.

[0019] like Figure 3 It is shown that the ultra-light high-strength filling core 2 is composed of a fusible polytetrafluoroethylene inner protective layer 2-2 extruded from a plurality of high-strength aramid yarns 2-1, a fusible polytetrafluoroethylene foamed intermediate layer 2-3 extruded from the fusible polytetrafluoroethylene inner protective layer 2-2, and a fusible polytetrafluoroethylene outer protective layer 2-4 extruded from the fusible polytetrafluoroethylene foamed intermediate layer 2-3; this structure has extremely high tensile strength and light weight. When the cable is stretched by external force, the ultra-light high-strength filling core will be stressed first to prevent the cable core from being broken due to excessive tension. This structure can make the filling core lighter and more regular in appearance.

Claims

1. An ultra-light, high-strength, high-temperature resistant data bus, characterized in that: Two ultralight high-temperature resistant data cables (1), two ultralight high-strength filling cores (2) and four high-temperature resistant light filling cores (3) form a cable core; the cable core is provided with a polytetrafluoroethylene 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 polytetrafluoroethylene raw tape outer sheath (7) in sequence; The specific structure of the cable core is that an ultralight high-strength filling core (2) is respectively arranged between two ultralight high-temperature resistant data cables (1), and a high-temperature resistant light filling core (3) is respectively arranged between the two ultralight high-strength filling cores (2) and the two ultralight high-strength filling cores (1).

2. The ultra-light, high-strength, high-temperature resistant data bus according to claim 1, characterized in that: The ultra-light high temperature resistant data cable (1) comprises a plurality of silver-plated copper alloy conductive wire cores (1-1) on the outside of which a fusible polytetrafluoroethylene inner insulation layer (1-2), a fusible polytetrafluoroethylene foam insulation layer (1-3) and a fusible polytetrafluoroethylene outer insulation layer (1-4) are sequentially arranged.

3. The ultra-light, high-strength, high-temperature-resistant data bus according to claim 1, characterized in that: The ultra-light high-strength filling core (2) is composed of a plurality of high-strength aramid yarns (2-1), and is provided with a fusible polytetrafluoroethylene inner protective layer (2-2), a fusible polytetrafluoroethylene foamed middle layer (2-3) and a fusible polytetrafluoroethylene outer protective layer (2-4) in sequence.

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