CN203871021U - Novel ethernet symmetric data cable - Google Patents

Abstract

The utility model provides a novel ethernet symmetric data cable which comprises an inner core and a sheath wrapping up the inner core , wherein the inner core comprises a plurality sets of twisted pair wires and filling strips in straight-line, T and cross shapes and E shape with opening facing upward. The filling strips separate the twisted pair wires, and each twisted pair wire comprise two twisted core wires, each of which comprises a conductor and an insulating layer wrapping up the conductor. An aluminum foil layer is arranged between the sheath and the inner core, and the aluminum foil layer is provided with a self-adhesive layer, through which the aluminum foil layer can be bonded together with an outer sheath and an inner sheath to prevent friction between the aluminum foil layer and the outer sheath or the inner sheath. Noise interference caused by triboelectrification when bending and twisting wire sets during wiring and using the cable can be suppressed, thereby effectively ensuring the transmission validity and accuracy, and improving transmission efficiency. The self-adhesive layer arranged on the aluminum foil layer is practical, economical and suitable.

Description

A kind of novel Ethernet symmetrical data cable

Technical field

The utility model relates to shielding and unshielded cable, relates in particular to the data communication symmetrical cable that 10G Ethernet is used.

Background technology

The high speed development of information technology needs that speed is faster, the greater and faster more accurately network of transmission of capacity carries, and traditional cable that is widely used in wiring market cannot meet the information technology of Modern High-Speed development.Wiring or while using between line group easily because bending or twisting produce the noise jamming that electrostatic interference causes, these problems are difficult to solve by simple Digital Signal Processing, solve structure itself due to the fricative electrostatic interference of static and error code phenomenon therefore need to design a kind of cable of new construction.

Utility model content

The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of novel Ethernet symmetrical data cable, the noise jamming that between the line group producing due to bending or twisting when can effectively suppressing wiring or using, triboelectrification causes, ensure validity and the accuracy of transmission, improve efficiency of transmission.

For achieving the above object and other relevant objects, the utility model provides a kind of novel Ethernet symmetrical data cable, comprise inner core, sheath, described sheath is coated on outside described inner core, described inner core comprises array twisted pair wire, and described twisted pair wire comprises the heart yearn of two stranded settings, and every heart yearn comprises conductor and is coated on the insulating barrier outside conductor, between described sheath and inner core, be provided with aluminium foil layer, described aluminium foil layer is provided with self-adhesive layer.

Preferably, described sheath comprises oversheath, and described aluminium foil layer is positioned at described oversheath inner surface, and described aluminium foil layer adheres to by described self-adhesive layer and described oversheath.

Preferably, described sheath comprises oversheath and inner sheath, and described aluminium foil layer adheres to by described self-adhesive layer and described inner sheath.

Preferably, described packing is a word, T word, cross, mountain font.

Preferably, two of described twisted pair wire heart yearns are twisting shape.

As mentioned above, symmetrical data cable of the present utility model has following beneficial effect: by be provided with self-adhesive layer on aluminium foil layer, aluminium foil layer and oversheath or inner sheath can be adhered to each other, prevent aluminium foil layer and described oversheath or the mutual friction of inner sheath phase, the noise jamming that between the line group producing due to bending or twisting when effectively suppressing wiring or using, triboelectrification causes, ensure validity and the accuracy of transmission, improve efficiency of transmission, and aluminium foil layer can play good shielding action after being provided with self-adhesive layer, and operation feasible in the actual use of self-adhesion aluminium foil, economic and practical, a stable, fast, economic and practical cable, both met the requirement of mechanical performance and the electric property of EIA/telecommunications industry association TIA-568-C.2, also meet the desired fire protecting performance in American insurance business laboratory (UL).

Brief description of the drawings

Fig. 1 is a kind of novel Ethernet symmetrical data cable cross sectional representation.

Element numbers explanation

1	Oversheath
		2	Inner sheath
3	Inner core
		4	Aluminium foil layer
31	Packing
		32	Twisted pair wire
41	Self-adhesive layer
		321	Insulating barrier
322	Conductor

Embodiment

By particular specific embodiment, execution mode of the present utility model is described below, person skilled in the art scholar can understand other advantages of the present utility model and effect easily by the disclosed content of this specification.

Refer to Fig. 1.Notice, appended graphic the illustrated structure of this specification, ratio, size etc., all contents in order to coordinate specification to disclose only, understand and read for person skilled in the art scholar, not in order to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, all should still drop on the technology contents that the utility model discloses and obtain in the scope that can contain.Simultaneously, in this specification, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, changing under technology contents, when being also considered as the enforceable category of the utility model without essence.

As shown in Figure 1, Figure 1 shows that taking cross and fill the non-shadow data of the 10G Ethernet cross sectional representation of symmetrical cable as example of communicating by letter, comprise inner core 3, sheath, sheath comprises oversheath 1 and inner sheath 2, inner sheath 2 is coated on outside inner core 3, and oversheath 1 is coated on outside inner sheath 2, between inner sheath 2 and oversheath 1, is provided with aluminium foil layer 4, be provided with self-adhesive layer 41 at inner sheath 2 and aluminium foil layer 4 contact-making surfaces, be provided with self-adhesive layer 41 at oversheath 1 and aluminium foil layer 4 contact-making surfaces.On aluminium foil layer 4, be provided with self-adhesive layer 41, aluminium foil layer 4 and oversheath 1, inner sheath 2 can be adhered to each other, prevent aluminium foil layer 4 and oversheath 1, inner sheath 2 phase mutual friction, when can effectively suppressing wiring or using because bending or twisting make the noise jamming that between oversheath 1, inner sheath 2, triboelectrification causes.

Wherein, inner core 3 comprises 4 groups of twisted pair wires 32 and packing 31, packing 31 is selected cross, 4 groups of twisted pair wires are separated to form to 4 marker spaces, every group of twisted pair wire 32 comprises the heart yearn of two stranded settings, heart yearn forms one group of twisted pair wire 32 between two, and every heart yearn comprises conductor 322 and is coated on the insulating barrier 321 outside conductor.

As a kind of optimal way, packing can also be a word, T word, mountain word or other are irregularly shaped.

Aspect material selection, conductor 322 of the present utility model adopts hypoxemia soft copper, by hypoxemia copper or oxygenless copper material through wire drawing and stranded the making of annealing, solid or the stranded conductor that conductor 322 specifications are 20～30AWG, can improve the soft degree of wire rod, packing 31 is made by polyethylene (PE) or the low tangent consumable material of other low-k, insulating barrier 321 adopts the material of low-k, low dielectric loss, is made up of high-density polyethylene (HDPE) material, physical blowing polyethylene (FOAM PE).

Two heart yearns of twisted pair wire 32 are twisting shape, and every group of twisted pair wire 32 all adopts 20～60% back twist technology.

High-speed data communication paired cable of the present utility model has cross-talk, electrostatic interference and the error rate between 6 important unit for electrical property parameters: Zu Kang ﹑ Shuai Jian ﹑ return losses, the interior cross-talk/group of group, has taken into full account six equilibrium in the time of design.

Impedance is parameter the most basic in electric property, and it determines apart from these three parameters of ﹑ insulative dielectric constant by the heart in conductor wire diameter ﹑ two conductors, any impedance do not mate the error that all can cause final acknowledge(ment) signal.We have taken into full account the impact of these three factors in the time of design, and conductor wire diameter is large, and low cut can be got well, but cost rising, final wire diameter is bigger than normal; The little decay of conductor wire diameter meeting is influenced.Considering while production the different and tension force of pitch, inconsistent can to produce each line different and affect impedance on two conductor centre-to-centre spacing, go out different insulation wire diameters according to different multiple twin pitch design, after guarantee finished product, the right resistance value of every line is controlled at 100 ± 15 Ohm left and right.

Decay is divided into conductor decay and diectric attenuation two parts, and conductor decay is relevant with resistance, so we adopt oxygen-free copper or hypoxemia copper product, makes resistance reach minimum; Insulating material is selected high density polyethylene (HDPE) (HDPE) or physical blowing polyethylene (FOAM PE) material, is all the smaller material of dielectric constant and dielectric loss angle.

Return loss is subject to the impact of input impedance, due to load impedance do not mate or make in the inhomogeneous point in cycle, and the reflection that produces signal, input impedance is fluctuateed up and down at characteristic impedance value, the energy of reflection aggravates along with the increase of frequency, even can produce the significantly sudden change of return loss.In design, adopt the pre-back twist technology of pair twist, eliminated the periodically impact of inconsistent generation on input impedance, improved the stability of input impedance, thereby optimized return loss.

When cross-talk designs in group, used the statistical method of Six Sigma experimental design to select best pitch, thereby met the requirement of crosstalking in group, real system can meet the qualified index of crosstalking of different levels.

One of superior performance of symmetrical data cable for a kind of novel Ethernet of the present utility model, is embodied in anti-static electricity interference and suppresses on error code.Traditional data communication paired cable design cannot solve due to triboelectrification and error code phenomenon between the insulator of bending or twisting generation.The utility model adopts and on aluminium foil layer, is provided with self-adhesive layer, aluminium foil layer and oversheath or inner sheath can be adhered to each other, prevent aluminium foil layer and described oversheath or the mutual friction of inner sheath phase, the noise jamming that between the line group producing due to bending or twisting when effectively suppressing wiring or using, triboelectrification causes, the performance of cable in transmitting procedure is improved, and handling ease, easy to operate, be aly get twice the result with half the effort, Eco-power new product.

Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all can, under spirit of the present utility model and category, modify or change above-described embodiment.Therefore, have in technical field under such as and conventionally know that the knowledgeable modifies or changes not departing from all equivalences that complete under spirit that the utility model discloses and technological thought, must be contained by claim of the present utility model.

Claims (5)

1. a novel Ethernet symmetrical data cable, it is characterized in that: comprise inner core, sheath, described sheath is coated on outside described inner core, described inner core comprises array twisted pair wire, described twisted pair wire comprises the heart yearn of two stranded settings, every heart yearn comprises conductor and is coated on the insulating barrier outside conductor, and between described sheath and inner core, be provided with aluminium foil layer, described aluminium foil layer is provided with self-adhesive layer.

2. the novel Ethernet symmetrical data cable of one according to claim 1, is characterized in that: described sheath comprises oversheath, and described aluminium foil layer is positioned at described oversheath inner surface, and described aluminium foil layer adheres to by described self-adhesive layer and described oversheath.

3. the novel Ethernet symmetrical data cable of one according to claim 1, is characterized in that: described sheath comprises oversheath and inner sheath, and described aluminium foil layer adheres to by described self-adhesive layer and described inner sheath.

4. the novel Ethernet symmetrical data cable of one according to claim 1 and 2, is characterized in that: described inner core also comprises packing, and described packing is separated array twisted pair wire, and described packing is a word, T word, cross, mountain font.

5. according to the novel Ethernet symmetrical data cable of one described in claim 1 or 2 or 3, it is characterized in that: two heart yearns of described twisted pair wire are twisting shape.