CN203406090U - Aviation differential network cable - Google Patents

Abstract

The utility model discloses an aviation differential network cable. The network cable comprises four conductors, each conductor is coated with a fluoroplastic insulation layer to form an insulated wire core, the insulated wire cores are mutually twisted with a filling core as the center to form a cable core, the center of the filling core is provided with a plastic pipe formed through plastic extrusion molding, the cable core is externally provided with a coating layer formed by wrapping a Teflon turning film, a filling layer made of filler resistant to high temperature is arranged between the coating layer and the cable core, and the coating layer is externally provided with an inner shielding layer, an outer shielding layer and an outer sheath layer in sequence. The aviation differential network cable is novel in structure design. The insulated wire cores and the filing core jointly form the cable core and the cable core is externally provided with the coating layer so that structural compactness of the cable can be well guaranteed. In addition, the cable has excellent shielding performance, the whole cable is lightweight, and signal transmission stability is good.

Description

A differential network cable for aviation

Technical field:

The utility model relates to cables, in particular to a differential network cable for aviation.

Background technique:

Differential transmission is a signal transmission technology, which is different from the traditional method of one signal line and one ground line. The differential signal transmits signals on both lines. The amplitude of the two signals is equal and the phase is opposite. The signals transmitted on these two lines are differential signals.

The first is the stringent requirements for the weight and volume of aerospace cables; the second is the requirements for the accuracy and transmission rate of the cable transmission signal; the third is the anti-interference shielding layer specially designed to prevent signal interference.

The current structure design of the differential network cable for aviation is unreasonable, the structure compactness and mechanical performance are poor, and the shielding performance is weak. How to design a reasonable structure is an urgent problem to be solved.

Utility model content:

In order to make up for the existing technical problems, the purpose of this utility model is to provide a differential network cable for aviation, which can effectively improve the structure compactness, shielding performance and mechanical performance of the cable, and ensure the stability of signal transmission.

The technical scheme of the utility model is as follows:

A differential network cable for aviation, including four conductors, is characterized in that: the four conductors are covered with a fluoroplastic insulating layer to form an insulated wire core, and the insulated wire cores are twisted with each other around the filling core to form a cable core. There is a plastic extruded plastic tube in the center of the core, and a polytetrafluoroethylene turning film is wrapped around the cable core to form a cladding layer. An inner shielding layer, an outer shielding layer and an outer sheathing layer are sequentially arranged outside the cladding layer.

The above-mentioned differential network cable for aviation is characterized in that: the four conductors are made of silver-plated annealed copper wires twisted into bundles.

The differential network cable for aviation is characterized in that: the inner shielding layer is braided by a single silver-plated copper wire, tin-plated copper wire or nickel-plated copper wire with a diameter of 0.08-0.30 mm.

The above-mentioned differential network cable for aviation is characterized in that: the outer shielding layer is composed of double-layer aluminum-plastic composite tapes overlapping and wrapping, and the overlapping rate of the wrapping is not less than 50%.

The utility model has the advantages of:

The utility model has a novel structural design. The cable core is composed of the insulating core and the filling core. The cable core is provided with a cladding layer, which can well ensure the compactness of the cable structure. The overall weight is light, and the signal transmission stability is good.

Description of drawings:

Fig. 1 is the structural representation of the utility model.

Detailed ways:

See Figure 1:

Differential network cable for aviation, including four conductors 1, the four conductors 1 are covered with fluoroplastic insulating layer 2 to form an insulated wire core, the insulated wire cores are twisted with each other around the filling core 3 to form a cable core, and the center of the filling core 3 is A plastic pipe 4 formed by plastic extrusion is provided, and a polytetrafluoroethylene turning film is wrapped around the cable core to form a cladding layer 5, which improves the structural compactness of the cable core. There is a filling layer 6 made of high-temperature-resistant fillers, and an inner shielding layer 7, an outer shielding layer 8, and an outer sheath layer 9 are arranged outside the cladding layer 5 in sequence.

The four conductors 1 are made of silver-plated annealed copper wires twisted into bundles, and have excellent electrical conductivity.

The inner shielding layer 7 is braided by a single silver-plated copper wire, tin-plated copper wire or nickel-plated copper wire with a diameter of 0.08-0.30 mm.

The outer shielding layer 8 is composed of double-layer aluminum-plastic composite tapes overlapping and wrapping, and the lapping rate of the wrapping is not less than 50%.

Claims (4)

1. A differential network cable for aviation, comprising four conductors, characterized in that: the four conductors are covered with a fluoroplastic insulating layer to form an insulated wire core, and the insulated wire core is formed by twisting each other with the filling core as the center In the center of the cable core, there is a plastic extruded plastic tube in the center of the filling core, and a polytetrafluoroethylene turning film is wrapped around the cable core to form a cladding layer. The filling layer and the cladding layer are successively provided with an inner shielding layer, an outer shielding layer and an outer sheath layer. 2. The aviation differential network cable according to claim 1, wherein the four conductors are formed by twisting silver-plated annealed copper wires into bundles. 3. The differential network cable for aviation according to claim 1, wherein the inner shielding layer is braided by a single silver-plated copper wire or tin-plated copper wire or nickel-plated copper wire with a diameter of 0.08-0.30 mm . 4. The differential network cable for aviation according to claim 1, characterized in that: the outer shielding layer is composed of double-layer aluminum-plastic composite tapes overlapping and wrapping, and the lapping rate of the wrapping is not less than 50%.

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