Easily branched cable

An easy-branching, optical cable technology, applied in the direction of fiber mechanical structure, etc., can solve the problems of optical cable structure damage, limited number of optical fiber cores, and difficulty in production, and achieve stable optical cable performance, small optical cable volume, and large optical fiber capacity. Effect

Inactive Publication Date: 2010-05-12
李祎帆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used branch optical cable has a Chinese invention patent application, the publication number is CN 1916680A, and the name is a cluster type branch optical cable; this optical cable is realized by bonding adjacent optical cable subunits, but the yield rate in the production process is not high. , due to the short bonding distance, it is very easy to separate the sub-units after repeated twisting during construction, which will affect the recognition
The other is a Chinese invention patent, its announcement number is CN 2800301Y, and its name is a non-parallel branch optical cable. The optical cable consists of an outer sheath and at least two optical cable subunits placed in a non-twisted form inside the outer sheath. The outer sheath is longitudinally cut with at least one gap cut for easy separation, and the separation of the optical cable sub-units is achieved by tearing the cut during construction. This method can easily separate the optical cable sub-units, but it is extremely difficult to achieve in production. Moreover, The optical cable also has the above-mentioned defects, that is, the outer sheath of the cable is very easy to crack when it is rotated and twisted during the construction process; in addition, in the case of a tear-shaped incision, the structure of the optical cable is greatly damaged, which affects other subunits. performance
Another is a Chinese invention patent, its announcement number is CN 2800302Y, and its name is a parallel branch optical cable. The function of branching is realized by connecting multiple optical cable subunits through the connection of adjacent connection strips. The connection strips are usually placed on the tear Due to the existence of the connecting tape, it occupies a relatively large area. Therefore, the number of fiber cores of the entire optical cable is very limited, and the manufacture of the entire optical cable is more complicated.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] See figure 1 , figure 2 , a branchable optical cable, is characterized in that: it comprises six loose tubes 3, a central strength member 6 located in the center of the optical cable, an outer sheath 5 covering the central strength member as a whole, and coated on the loose tube 3 The outer suspension wire 1 and the rib 2 connecting the suspension wire 1 and the outer sheath 5; each of the loose tubes contains four optical fibers 4; the suspension wire 1 and the rib 2 are distributed around the outer sheath 5 and adjacent suspension wires There is a gap between the ribs; the suspension wire 1, the rib 2, and the outer sheath 5 are integrally formed and are of the same material; the central reinforcement is a metal wire; the material of the loose tube 3 is poly Butylene phthalate; the material of the suspension wire 1 or the rib 2 or the outer sheath 5 is medium-density polyethylene; the optical fiber 4 is a single-mode optical fiber.

Embodiment 2

[0023] See image 3 , an optical cable that is easy to branch, basically the same as the implementation example 1, the difference is that: a loose tube 3 is covered with a protective layer 7; the protective layer 7 is located inside the suspension wire 1; the protective layer is water-blocking Tape or water blocking yarn or fiberglass tape or steel tape or aluminum tape or polyester tape.

Embodiment 3

[0025] See Figure 4 , a kind of easy-to-branch optical cable, which is basically the same as the implementation example 1, the difference is that there are four suspension wires and four ribs, there is a loose tube 3 in each of the two suspension lines, and there are two in each loose tube 3 Optical fiber 4; There is also a loose tube in another suspension line, four of which are located in the optical fiber ribbon 10; The loose tube in another suspension line is replaced by a single signal line, which is composed of conductor 9 and package It is composed of the sheath 8 covering the conductor; the conductor is a single metal.

[0026] Of course, the branchable optical cable described in any of the above embodiments is also characterized in that: when there are multiple optical fibers 4, they can be placed in the loose tube in the form of optical fiber ribbons.

[0027] Certainly, the branchable optical cable described in any of the above embodiments is characterized in that...

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Abstract

The invention relates to the technical field of cables, in particular to an easily branched cable. The cable is characterized in that: the cable at least comprises a loose sleeve (3), a central reinforcer (6), an outer sheath (5), suspension wires (1) and ribs (2), wherein the central reinforcer (6) is positioned in the center of the cable; the outer sheath (5) integrally covers the central reinforcer; the suspension wires (1) cover the outside of the loose sleeve (3); the ribs (2) are connected with the suspension wires (1) and the outer sheath (5); the loose sleeve is internally provided with at least one optical fiber (4); the suspension wires (1) and the ribs (2) are distributed around the outer sheath (5); gaps exist between adjacent suspension wires and between adjacent ribs; and the suspension wires (1), the ribs (2) and the outer sheath (5) are integrally formed and made of the same material. The cable has the advantages of easy branching, small cable volume, high fiber capacity, easy processing and stable cable performance.

Description

technical field [0001] The invention relates to the technical field of optical cables, in particular to an easily branched optical cable. Background technique [0002] With the continuous development of the communication industry, optical cables are widely used in various industries involving signals, such as cable television networks, GMS networks, CDMA networks, etc.; and with the continuous growth of broadband access services and people's requirements for signal bandwidth Increasingly, more and more occasions use optical fiber access, therefore, the requirements for the branching of optical cables are getting higher and higher. At present, the commonly used branch optical cable has a Chinese invention patent application, the publication number is CN 1916680A, and the name is a cluster type branch optical cable; this optical cable is realized by bonding adjacent optical cable subunits, but the yield rate in the production process is not high. , due to the short bonding di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
Inventor 王春鸿
Owner 李祎帆
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