CN217847469U - Photoelectric composite digital communication cable - Google Patents

Abstract

The utility model discloses a compound digital communication cable of photoelectricity, including shielding group unit, optical cable unit, braided shield and fire-retardant oversheath to the line, shielding group unit includes conductor, insulating sheath and shielding band to the line, the extruded cladding of insulating sheath is outside the conductor and forms insulated wire core, two insulated wire core twists each other and forms a set of insulating pair twist group, shielding band winding cladding is outside insulating pair twist group, the optical cable unit includes the fibre core, moulds the cover, fire-retardant inner sheath and reinforcing filler, a plurality of groups the clearance department and the formation cable core of shielding group unit are arranged at a plurality of groups to the line to the optical cable unit surrounding the formula respectively, braided shield weaves the cladding outside the cable core, fire-retardant extruded cladding is outside braided shield, and the bulk ability is strong.

Description

Photoelectric composite digital communication cable

[ technical field ] A

The utility model relates to a technical field of cable, especially a photoelectric composite digital communication cable's technical field.

[ background of the invention ]

The communication cable refers to a cable for audio communication at a short distance and high frequency carrier, digital communication and signal transmission at a long distance, and is generally applied to intelligent buildings, data centers, 5G communication network centers and the like. In the process of transmitting signals, the communication cable is easily interfered by external electromagnetic signals, and the problems of differential signal interference and the like occur, so that the phenomena of screen splash and the like occur on the picture at the far-end output end. For this reason, a metal shielding layer is usually wrapped outside the insulating layer. However, in the practical use process, the shielding effect of this kind of method is not satisfactory, and when the external interference is strong, the signal transmission rate and the stability of signal transmission are still relatively poor, and it is difficult to satisfy the anti-interference requirement in the scene of multi-channel, long distance and high frequency transmission, and a solution is urgently needed. In addition, most of communication cable cores are all bound together, and the problem of excessive heat accumulation can occur during electric conduction, so that the potential safety hazard of fire hazard is caused.

[ Utility model ] A method for manufacturing a semiconductor device

The utility model aims at solving the problem among the prior art, providing a compound digital communication cable of photoelectricity, whole interference killing feature is strong, can satisfy the photoelectric communication needs of many communications, long distance, multi-functional, high frequency transmission.

In order to achieve the above object, the utility model provides a photoelectric composite digital communication cable, including shielding group unit, optical cable unit, woven shield and fire-retardant oversheath to the line, shielding group unit includes conductor, insulating sheath and shielding band to the line, the extrusion cladding of insulating sheath is outside the conductor and form the insulated core, two the insulated core twists each other and forms a set of insulating pair twist group, shielding band winding cladding is outside insulating pair twist group, the optical cable unit includes fibre core, plastic sheath, fire-retardant inner sheath and reinforcing filler, the extrusion cladding of plastic sheath is outside the fibre core and forms the optical cable sinle silk, two the mutual twist of optical cable sinle silk forms a set of optical cable pair twist group, the extrusion cladding of fire-retardant inner sheath is outside optical cable pair twist group, reinforcing filler is filled between optical cable pair twist group and fire-retardant inner sheath, a plurality of groups the optical cable unit is arranged around the formula respectively and is located and forms the cable core to the clearance of shielding group unit to the line, woven shield is woven shield outside the cladding of fire-retardant extrusion cladding.

Preferably, the conductor has a diameter of 0.4 to 0.8mm and an elongation of 23 to 27%.

Preferably, the thickness of the insulating sleeve is 0.2-0.6 mm, the insulating sleeve is a foaming sleeve, the foaming degree is 45-55%, the tensile strength of the insulating sleeve is not less than 17MPa, and the elongation of the insulating sleeve is not less than 350%.

Preferably, the shielding tape is a single-sided aluminum foil tape, and the metal surface of the single-sided aluminum foil tape is arranged outwards.

Preferably, the fiber core is a single-mode tight-buffered fiber insensitive to bending loss, and the diameter of the fiber core is 0.3-0.7 mm.

Preferably, the plastic sleeve is a polyvinyl chloride sleeve, and the outer diameter of the plastic sleeve is 2.5-4.5 mm.

Preferably, the flame-retardant inner sheath is a polyolefin sheath, and the thickness of the flame-retardant inner sheath is 0.35-0.75 mm.

Preferably, the reinforcing filler is aramid fiber yarn, and the denier number of the aramid fiber yarn is 1500 to 2000.

Preferably, the braided shielding sleeve is a tinned copper wire braided sleeve, the braiding density of the tinned copper wire braided sleeve is more than or equal to 80%, and the diameter of a tinned copper wire of the tinned copper wire braided sleeve is 0.05-0.15 mm.

Preferably, the flame-retardant outer sheath is a polyolefin sheath, and the thickness of the flame-retardant outer sheath is 0.5-0.9 mm.

The utility model has the advantages that:

the utility model discloses utilize shielding band winding cladding insulation pair twist group among the shielding group unit of line, the multiple reflection of usable shielding band metal self, absorb shielding function, effectively improve the shielding effect to the shielding group unit of line, and then ensure that the cable has good interference immunity, adopt multiunit to line shielding group unit and optical cable unit to form the cable core simultaneously, again outside the cable core cladding woven shield cover and fire-retardant oversheath in proper order, usable woven shield cover is under the condition that does not influence the cable flexibility, further improve the anti-electromagnetic interference ability of cable, thereby furthest has guaranteed that the cable does not change at the minimum transmission performance under the crooked condition, whole interference killing feature is strong, can satisfy many communications, long distance, multi-functional, high-frequency transmission's photoelectric communication needs, can be applied to among intelligent building, data center and the 5G communication network center; by combining the flame-retardant outer sheath and the flame-retardant inner sheath, the product has higher transmission performance and stronger anti-electromagnetic interference capability and also has higher flame-retardant performance.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic cross-sectional view of an optical-electrical composite digital communication cable according to the present invention;

fig. 2 is a schematic cross-sectional view of a pair wire shielding unit of the photoelectric composite digital communication cable of the present invention;

fig. 3 is a schematic cross-sectional view of an optical cable unit of the optical-electrical composite digital communication cable of the present invention.

In the figure: 1-paired wire shielding group unit, 11-conductor, 12-insulating sleeve, 13-shielding wrapping tape, 2-optical cable unit, 21-fiber core, 22-plastic sleeve, 23-flame-retardant inner sheath, 24-reinforced filler, 3-braided shielding sleeve and 4-flame-retardant outer sheath.

[ detailed description ] embodiments

Referring to fig. 1, fig. 2 and fig. 3, the utility model relates to a photoelectric composite digital communication cable, including shielding group unit 1, optical cable unit 2, braided shield 3 and fire-retardant oversheath 4 to the line, shielding group unit 1 includes conductor 11, insulating sheath 12 and shielding band 13 to the line, the extrusion cladding of insulating sheath 12 is outside conductor 11 and forms the insulating sinle silk, two the insulating sinle silk twists each other and forms a set of insulating pair twist group, shielding band 13 winding is outside insulating pair twist group, optical cable unit 2 includes fibre core 21, plastic sheath 22, fire-retardant inner sheath 23 and reinforcing filler 24, the extrusion cladding of plastic sheath 22 is outside fibre core 21 and forms the optical cable sinle silk, two the optical cable core twists each other and forms a set of pair twist group, the extrusion cladding of fire-retardant inner sheath 23 is outside optical cable pair twist group, reinforcing filler 24 is filled between optical cable pair twist group and fire-retardant inner sheath 23, a plurality of groups optical cable unit 2 is arranged at the clearance department of a plurality of line group unit 1 and forms the cable core around the formula respectively, the braided shield group is outside the cable core, the braided shield 3 outer sheath is wrapped in the fire-retardant extrusion cladding outside the cable core. The number of the pair line shielding group units 1 is 4, the number of the optical cable units 2 is 5, the 4 pairs line shielding group units 1 and the 5 groups of optical cable units 2 are arranged in a circular symmetry manner, in order to ensure the stable cable core structure, the cabling pitch is designed to be 130-150 mm, the tension of the take-up and pay-off lines is uniform and consistent, and the deviation of the cabling pitch is controlled within +/-5 mm. In addition, the colors of 8 groups of insulation wire cores are white (blue), white (orange), white (green), white (brown), blue, orange, green and brown respectively, 8 groups of insulation wire cores need to be twisted according to a certain regular color sequence, different wire group twisting pitches are adopted according to a pitch balance knot principle to further optimize the pitch combination of 4 insulation pair twisting groups, and the paying-off tension of two single wires of the insulation pair twisting groups needs to be adjusted well in the production process, the stability and the uniformity of the paying-off tension are guaranteed, and the structural symmetry performance of the insulation pair twisting groups is better.

The diameter of the conductor 11 is 0.57mm, and the elongation of the conductor 11 is 23 to 27%. The conductor 11 is a soft round copper conductor.

The thickness of the insulating sleeve 12 is 0.38 +/-0.02 mm, the insulating sleeve 12 is a foaming sleeve, the foaming degree is 50%, the tensile strength of the insulating sleeve 12 is more than or equal to 17MPa, and the elongation of the insulating sleeve 12 is more than or equal to 350%. Wherein, the insulating sleeve 12 adopts a skin-foam insulating foaming structure.

The shielding wrapping tape 13 is a single-side aluminum foil tape, and the metal surface of the single-side aluminum foil tape is arranged outwards. The shielding tape 13 outside the insulation pair-twisting group of the 4-group paired line shielding group unit 1 is wrapped by an automatic tape placing machine, the directions and angles of the outer edges of the overlapped wrapping are consistent, the tape placing tension is consistent and uniform, and the poor phenomena of wrinkles, scratches and the like are not required.

The fiber core 21 is a single mode tight-buffered optical fiber insensitive to bending loss, and the diameter of the fiber core 21 is 0.5mm.

The plastic sleeve 22 is a polyvinyl chloride sleeve, and the outer diameter of the plastic sleeve 22 is 3.5 +/-0.05 mm.

The flame-retardant inner sheath 23 is a polyolefin sheath, and the thickness of the flame-retardant inner sheath 23 is 0.55 +/-0.05 mm.

The reinforcing filler 24 is aramid yarn having a denier of 1670.

The braided shielding sleeve 3 is a tinned copper wire braided sleeve, the braiding density of the tinned copper wire braided sleeve is more than or equal to 80%, and the diameter of a tinned copper wire of the tinned copper wire braided sleeve is 0.1mm. Wherein, the number of the tinned wires of the tinned wire braided sleeve is 160.

The flame-retardant outer sheath 4 is a polyolefin sheath, and the thickness of the flame-retardant outer sheath 4 is 0.7mm.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims (10)

1. An optoelectrical composite digital communication cable, characterized by: the cable comprises a pair shielding group unit (1), an optical cable unit (2), a woven shielding sleeve (3) and a flame-retardant outer sheath (4), wherein the pair shielding group unit (1) comprises a conductor (11), an insulating sleeve (12) and a shielding tape (13), the insulating sleeve (12) is extruded to be coated outside the conductor (11) and form an insulating wire core, the insulating wire core is twisted with each other and form a group of insulating twisted pair group, the shielding tape (13) is wound and coated outside the insulating twisted pair group, the optical cable unit (2) comprises a fiber core (21), a plastic sleeve (22), a flame-retardant inner sheath (23) and a reinforcing filler (24), the plastic sleeve (22) is extruded and coated outside the fiber core (21) and form an optical cable core, the optical cable core is twisted with each other and form a group of optical cable twisted pair group, the flame-retardant inner sheath (23) is extruded and coated outside the optical cable twisted pair group, the reinforcing filler (24) is filled between the optical cable twisted pair group and the flame-retardant inner sheath (23), the plurality of groups are respectively arranged around the plurality of cable unit (2) and are woven outside a gap between the plurality of the cable shielding group (1) and the woven and the extruded and coated outside the flame-retardant outer sheath (3) and the cable shielding group, and the woven and the cable sheath (4) is woven and coated outside the cable shielding group.

2. The optoelectrical composite digital communication cable of claim 1, wherein: the diameter of the conductor (11) is 0.4-0.8 mm, and the elongation of the conductor (11) is 23-27%.

3. The optoelectrical composite digital communication cable of claim 1, wherein: the thickness of the insulating sleeve (12) is 0.2-0.6 mm, the insulating sleeve (12) is a foaming sleeve, the foaming degree is 45-55%, the tensile strength of the insulating sleeve (12) is not less than 17MPa, and the elongation of the insulating sleeve (12) is not less than 350%.

4. The optoelectrical composite digital communication cable of claim 1, wherein: the shielding tape (13) is a single-sided aluminum foil tape, and the metal surface of the single-sided aluminum foil tape is arranged outwards.

5. The optoelectrical composite digital communication cable of claim 1, wherein: the fiber core (21) is a single-mode tight-buffered optical fiber insensitive to bending loss, and the diameter of the fiber core (21) is 0.3-0.7 mm.

6. The optoelectrical composite digital communication cable of claim 1, wherein: the plastic sleeve (22) is a polyvinyl chloride sleeve, and the outer diameter of the plastic sleeve (22) is 2.5-4.5 mm.

7. The optoelectrical composite digital communication cable of claim 1, wherein: the flame-retardant inner sheath (23) is a polyolefin sheath, and the thickness of the flame-retardant inner sheath (23) is 0.35-0.75 mm.

8. The optoelectrical composite digital communication cable of claim 1, wherein: the reinforced filler (24) is aramid fiber yarn, and the denier number of the aramid fiber yarn is 1500-2000.

9. The optoelectrical composite digital communication cable of claim 1, wherein: the braided shielding sleeve (3) is a tinned copper wire braided sleeve, the braiding density of the tinned copper wire braided sleeve is more than or equal to 80%, and the diameter of a tinned copper wire of the tinned copper wire braided sleeve is 0.05-0.15 mm.

10. The optoelectrical composite digital communication cable of claim 1, wherein: the flame-retardant outer sheath (4) is a polyolefin sheath, and the thickness of the flame-retardant outer sheath (4) is 0.5-0.9 mm.

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