CN203825248U - Indoor soft optical cable - Google Patents

Abstract

The utility model discloses an indoor soft optical cable comprising at least one cable core, a filling rope, an aramid fiber yarn layer, a filling paste, a plastic-coated steel band, strengthening steel wires and an outer protection sleeve, wherein each cable core is formed by at least one optical fiber and a sleeve tube filling object and is wrapped with a tight sleeve coating layer, the cable cores are intertwisted around the filling rope and are wrapped with the aramid fiber yarn layer, gaps between the cable cores and the filling rope are provided with the filling paste, the plastic-coated steel band and the outer protection sleeve are orderly wrapped around the outer part of the aramid fiber yarn layer in a from-internal-to-external manner, and the strengthening steel wires are arranged in the outer protection sleeve; thickness ration among the aramid fiber yarn layer, the plastic-coated steel band and the outer protection sleeve is 0.5:0.5 to 0.7: 1 to 2. The indoor soft optical cable of the utility model is small in external diameter, excellent in bending performance, strong in anti-compression capability, and strong in mechanical protection performance. The indoor soft optical cable can be well prevented from being damaged by external environment, optical cable strength is improved through adoption of high-count aramid fiber filaments, and the indoor soft optical cable is suitable for being applied to optical-fiber-to-desktop cable distribution and optical-fiber-to-building-data-vertical-trunk cable distribution; the indoor soft optical cable can be made to be one of cables of a plurality of standards such as a single-mode core standard, a multi-mode 62.5/125 core standard, a multi-mode 50/125 core standard and the like; and good practicality is achieved.

Description

A kind of indoor flexible optical cable

Technical field

The utility model relates to a kind of optical cable, is specifically related to a kind of indoor flexible optical cable.

Background technology

Optical cable is that the optical fiber of some forms the cable heart according to certain way, is surrounded by sheath outward, and the also coated outer jacket having, in order to realize a kind of communication line of optical signal transmission.Be divided into single-mode fiber and multimode optical fiber by the transmission mode of optical fiber.Single-mode fiber refers in operation wavelength, can only transmit the optical fiber of a communication mode, conventionally referred to as single-mode fiber (SMF:Single ModeFiber).At present, in CATV (cable television) and optical communication, be most widely used optical fiber.Distribute because, the fibre core of optical fiber very thin (about 10pm) and refractive index is step-like, in the time of normalized frequency V parameter L EssT.LTssT.LT2.4, in theory, can only form single mode transport.In addition, SMF does not have mode dispersion, and not only transmission band is wider compared with multimode optical fiber, adds the material dispersion of SMF and the addition of structure dispersion and offsets, and its composite character forms the characteristic of zero dispersion just, and transmission band is widened more.In SMF, there are many types because alloy is different with the difference of manufacture.Umbilicate type cladded-fiber (DePr-essed Clad Fiber), its covering forms double structure, the covering of contiguous fibre core, the refractive index of outer ladle-to-ladle layer is also low.In addition, have matching type cladded-fiber, its cladding index is evenly distributed.Multimode optical fiber, is called multimode optical fibers (MMF:MUlti ModeFiber) by optical fiber by those length of work taking its propagable pattern as the optical fiber of multiple patterns.Core diameter is 50pm, and because transmission mode can reach hundreds of, transmission bandwidth is arranged by modal dispersion mainly compared with SMF.In history once for the short-distance transmission of CATV (cable television) and communication system.After there is SMF optical fiber, seem history of forming product.But in fact,, because MMF is large and be combined easily with light sources such as LED compared with the core diameter of SMF, in numerous LAN, more have superiority.So MMF is still coming into one's own again in short haul connection field.

Inside cable is for indoor optical cable, must possess some mechanical properties, the environmental characteristicses such as durable, withstand voltage, corrosion-resistant, tension.Existing inside cable can't meet user demand completely.

Utility model content

Goal of the invention: for deficiency of the prior art, the purpose of this utility model is to provide a kind of indoor flexible optical cable, makes it have durable, withstand voltage, decay resistance, meets user demand.

Technical scheme: in order to realize foregoing invention object, the technical solution adopted in the utility model is:

A kind of indoor flexible optical cable, comprises that at least 1 by cable core, gasket for packing, aramid yarn, filling paste, plastic-coated steel band, reinforcement steel wire and the oversheath that 1 optical fiber and sleeve pipe filling material forms that be no less than that tightly overlaps coating parcel; Described cable core is stranded around gasket for packing, is wrapped up by aramid yarn, in the gap between cable core, gasket for packing, establishes filling paste; Wrap up successively from inside to outside plastic-coated steel band and oversheath outward at described aramid yarn; Described reinforcement steel wire is located in oversheath; Wherein, the Thickness Ratio between aramid yarn, plastic-coated steel band and oversheath is 0.5:0.5 ~ 0.7:1 ~ 2.

Described sleeve pipe filling material is fine cream.

Described filling paste is greasy for preventing water.

Described oversheath is tygon inner sheath.

Beneficial effect: compared with prior art, indoor flexible optical cable of the present utility model, outer dia is little, there is good bending property, anti-pressure ability is strong, has stronger mechanical protection, better avoids external environment infringement, adopt high-count aramid fiber yarn to strengthen optical cable intensity, be applicable to the application of fiber to the desk and the vertical trunk of building data; Can be made into the plurality of specifications such as single mode, multimode 62.5/125, multimode 50/125 core, there is good practicality.

Brief description of the drawings

Fig. 1 is the structural representation of indoor flexible optical cable.

Embodiment

Below in conjunction with accompanying drawing, technical solutions of the utility model are elaborated.

As shown in Figure 1, a kind of indoor flexible optical cable, comprise at least 1 by being no less than of tightly overlapping that coating 1 wraps up cable core 4, gasket for packing 10, aramid yarn 5, filling paste 6, plastic-coated steel band 7 that 1 optical fiber 2 and sleeve pipe filling material 3 form, strengthen steel wire 8 and oversheath 9; Cable core 4 is stranded around gasket for packing 10, is wrapped up by aramid yarn 5, in the gap between cable core 4, gasket for packing 10, establishes filling paste 6; Outside aramid yarn 5, wrap up successively from inside to outside plastic-coated steel band 7 and oversheath 9; Strengthening steel wire 8 is located in oversheath 9; Wherein, the Thickness Ratio between aramid yarn, plastic-coated steel band and oversheath is 0.5:0.5 ~ 0.7:1 ~ 2.Sleeve pipe filling material 3 is fine cream.Filling paste 6 is greasy for preventing water.Oversheath 9 is tygon inner sheath.

Indoor flexible optical cable of the present utility model, be mainly used between house wiring and indoor various communication facilities, between equipment and instrument, instrument is connected with instrument cubicle.This optical cable outer dia is little, has good bending property, and anti-pressure ability is strong, there is stronger mechanical protection, better avoid external environment infringement, adopt high-count aramid fiber yarn to strengthen optical cable intensity, be applicable to the application of fiber to the desk and the vertical trunk of building data; Can be made into the plurality of specifications such as single mode, multimode 62.5/125, multimode 50/125 core, there is good practicality.

Claims (4)

1. an indoor flexible optical cable, is characterized in that: comprise that at least 1 by cable core (4), gasket for packing (10), aramid yarn (5), filling paste (6), plastic-coated steel band (7), reinforcement steel wire (8) and the oversheath (9) that 1 optical fiber (2) and sleeve pipe filling material (3) form that be no less than that tightly overlaps coating (1) parcel; Described cable core (4) is stranded around gasket for packing (10), by aramid yarn (5) parcel, in the gap between cable core (4), gasket for packing (10), establishes filling paste (6); Outside described aramid yarn (5), wrap up successively from inside to outside plastic-coated steel band (7) and oversheath (9); Described reinforcement steel wire (8) is located in oversheath (9); Wherein, the Thickness Ratio between aramid yarn (5), plastic-coated steel band (7) and oversheath (9) is 0.5:0.5 ~ 0.7:1 ~ 2.

2. indoor flexible optical cable according to claim 1, is characterized in that: described sleeve pipe filling material (2) is fine cream.

3. indoor flexible optical cable according to claim 1, is characterized in that: described filling paste (6) is greasy for preventing water.

4. indoor flexible optical cable according to claim 1, is characterized in that: described oversheath (9) is tygon inner sheath.