CN201212920Y

CN201212920Y - Micro single-core and multi-core optical fiber

Info

Publication number: CN201212920Y
Application number: CNU2008200380725U
Authority: CN
Inventors: 陈炳炎; 张海军
Original assignee: Jiangsu Tongding Optic Electronic Stock Co Ltd
Current assignee: Tongding Interconnection Information Co Ltd
Priority date: 2008-06-11
Filing date: 2008-06-11
Publication date: 2009-03-25
Anticipated expiration: 2018-06-11

Abstract

The utility model relates to a minitype single fiber cable which comprises an optical fiber unit, an aromatic polyamide fiber layer that is made of aromatic polyamide fiber and is longitudinally arranged on the periphery of the optical fiber unit, and a jacket layer covered on the periphery of the aromatic polyamide fiber layer. Through the aromatic polyamide fiber layer that is made of the aromatic polyamide fiber and is longitudinally arranged on the periphery of the optical fiber unit, and the jacket layer covered on the periphery of the aromatic polyamide fiber layer, because the outer diameter of the optical fiber is generally 0.25 mm, the outer diameter of the fiber cable covered on the aromatic polyamide fiber layer and the jacket layer is also smaller, and because the aromatic polyamide fiber layer is arranged, the fiber cable has a certain tensile property, and the single fiber cable can be used as an insulated cable for cabling.

Description

Miniature single core and multifiber cable

Technical field

The utility model relates to a kind of optical cable, relates in particular to a kind of inside cable.

Background technology

Existing inside cable mainly as the tail optical fiber or the wire jumper of instrument and communications facility, can be selected single fiber cable or multifiber cable according to the application scenario.Traditional single fiber cable is to be the tight tube fiber of 0.9mm by external diameter, and the outside aramid fiber of vertically placing constitutes the anti-element of opening, and squeezes into sheath more thereon and forms.The single fiber cable external diameter of Xing Chenging is between 2～3mm in the manner described above, requires succinct not in disorder today day by day at house wiring, and this single fiber cable can not satisfy the requirement in market, therefore, needs a kind of more miniature and optical cable that can use separately.

The utility model content

The utility model purpose is exactly to provide a kind of external diameter the less but optical cable that can use separately in order to overcome the deficiencies in the prior art.

In order to reach the foregoing invention purpose, the technical solution of the utility model is: a kind of miniature single fiber cable, it comprises fiber unit, vertically is arranged on the aramid fiber layer that the aramid fiber of described fiber unit periphery forms, the restrictive coating that is coated on described aramid fiber layer periphery.

Further, the external diameter of described miniature single fiber cable is 0.9mm, thereby makes the external diameter of this micro optical cable only be equivalent to common tight tube fiber, but it can be used as optical cable and independently uses.

The utility model also provides a kind of miniature multifiber cable, it comprises a plurality of miniature single fiber cables, is coated on the outer jacket of described a plurality of miniature single fiber cable peripheries, and described each miniature single fiber cable comprises a fiber unit, vertically is arranged on the aramid fiber layer that the aramid fiber of described fiber unit periphery forms, the restrictive coating that is coated on described aramid fiber layer periphery.

Further, it also comprises the center strengthening core that is arranged between described a plurality of miniature single fiber cable, thereby can improve the intensity of whole optical cable.

The external diameter of described miniature single fiber cable is 0.9mm.

Because the utilization of technique scheme, the utility model compared with prior art has following advantage: the utility model forms the aramid fiber layer by the aramid fiber that vertically is provided with at fiber unit, periphery in aramid layers coats restrictive coating again, because the external diameter of fiber unit is generally 0.25mm, the external diameter that has coated the optical cable of aramid fiber layer and restrictive coating also can be smaller, and because it is provided with the aramid fiber layer, thereby make optical cable have certain tensile property, therefore, it can be used as independently the optical cable use of connecting up.

Description of drawings

Accompanying drawing 1 is the cross-sectional view of the miniature single fiber cable of the utility model;

Accompanying drawing 2 is the cross-sectional view of the miniature twin fiber cable of the utility model;

Accompanying drawing 3 is the cross-sectional view of the miniature multifiber cable of the utility model;

Wherein: 1, fiber unit; 11, optical fiber; 12, coating; 2, aramid fiber layer; 3, restrictive coating; 10, single fiber cable; 20, outer jacket; 4, center strengthening core.

Embodiment

Below in conjunction with accompanying drawing the utility model preferred embodiment is elaborated:

Miniature single fiber cable 10 as shown in Figure 1, comprise conventional fiber unit 1, the restrictive coating 3 that is coated on the aramid fiber layer 2 of described fiber unit 1 periphery and is coated on described aramid fiber layer 2 periphery is formed, wherein, fiber unit 1 is the conventional fiber unit, it comprises that diameter is the optical fiber 11 of 0.125mm, being coated in the thickness that optical fiber 11 peripheries form by the ultra-violet curing acryl resin is the coating 12 of 0.25mm, aramid fiber layer 2 vertically evenly is placed on coating 12 outsides by the less aramid fiber of some yarn count line densities (dtex) and forms, restrictive coating 3 usefulness Polyvinylchloride (PVC) or flame retardant polyolefine material are made, when making, aramid yarn vertically can be placed and sheath is extruded once and finished, therefore processing is provided with simply, and processing technology is convenient.Simultaneously, when extruding sheath, need to vacuumize, the good binding effect is arranged to guarantee sheath and aramid fiber layer at head at miniature single fiber cable.

The external diameter of the above-mentioned miniature single fiber cable of producing only is 0.9mm, the external diameter that is equivalent to conventional tight tube fiber, owing between fiber unit 1 and restrictive coating 3, be provided with aramid fiber layer 2, this aramid fiber layer 2 can be used as reinforcing element, again as the cushion of fiber cores, simultaneously attenuate sheath thickness, can bear the pulling force of 50N, thereby the alternative traditional single fiber cable of this kind single fiber cable is made tail optical fiber and wire jumper uses, particularly in compact instrument of placing of need and communication facilities, join a large amount of lines when placing, particularly practical.

Certainly form aramid fiber layer 2 to play the booster action except aramid fiber can be set between fiber unit 1 and restrictive coating 3, this aramid fiber layer 2 also can adopt reinforcing fiber materials such as superhigh molecular weight polyethylene fibers or glass fibre to make.

Miniature single fiber cable 10 of the present utility model also can further make up stranding, shown in Figure 2 is by two miniature single fiber cable 10 formed twin fiber cables, two miniature single fiber cables 10 are by outer jacket 20 phase hard-pressed bales, the structure of the miniature single fiber cable 10 that is adopted is identical with single fiber cable structure shown in Figure 1, does not repeat them here.

Shown in Figure 3 is by six described miniature single fiber cable 10 formed multifiber cable sectional views, six described miniature single fiber cable 10 same outer jacket 20 phase hard-pressed bales that pass through, above-mentioned outer jacket 20 still adopts Polyvinylchloride (PVC) or flame retardant polyolefine material to make, simultaneously, in order to make this multifiber cable have higher intensity, between a plurality of miniature single fiber cables 10, also be provided with and be longitudinally set with center strengthening core 4, the structure of the miniature single fiber cable 10 that is adopted is identical with single fiber cable structure shown in Figure 1, does not repeat them here.

Claims

1, a kind of miniature single fiber cable is characterized in that: it comprises fiber unit (1), vertically is arranged on the aramid fiber layer (2) that the aramid fiber of described fiber unit (1) periphery forms, the restrictive coating (3) that is coated on described aramid fiber layer (2) periphery.

2, miniature single fiber cable according to claim 1 is characterized in that: the external diameter of described miniature single fiber cable is 0.9mm.

3, a kind of miniature multifiber cable, it is characterized in that: it comprises a plurality of miniature single fiber cables (10), is coated on the outer jacket (11) of described a plurality of miniature single fiber cables (10) periphery, and described each miniature single fiber cable (10) comprises a fiber unit (1), vertically is arranged on the aramid fiber layer (2) that the aramid fiber of described fiber unit (1) periphery forms, the restrictive coating (3) that is coated on described aramid fiber layer (2) periphery.

4, miniature multifiber cable according to claim 3 is characterized in that: it also comprises the center strengthening core (4) that is arranged between described a plurality of miniature single fiber cables (10).

5, miniature multifiber cable according to claim 3 is characterized in that: the external diameter of described miniature single fiber cable is 0.9mm.