CN109752808B - Butterfly cable - Google Patents

Butterfly cable Download PDF

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Publication number
CN109752808B
CN109752808B CN201910128905.XA CN201910128905A CN109752808B CN 109752808 B CN109752808 B CN 109752808B CN 201910128905 A CN201910128905 A CN 201910128905A CN 109752808 B CN109752808 B CN 109752808B
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CN
China
Prior art keywords
sheath
optical fiber
butterfly cable
separation
blocking pieces
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CN201910128905.XA
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CN109752808A (en
Inventor
王醒东
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Tianjin Futong Information Technology Co.,Ltd.
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Hangzhou Futong Communication Technology Co Ltd
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Priority to CN201910128905.XA priority Critical patent/CN109752808B/en
Publication of CN109752808A publication Critical patent/CN109752808A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • G02B6/4432—Protective covering with fibre reinforcements
    • G02B6/4433—Double reinforcement laying in straight line with optical transmission element
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G02B6/56—Processes for repairing optical cables
    • G02B6/566—Devices for opening or removing the mantle

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

The invention provides a butterfly cable, comprising: an optical fiber; the reinforcing pieces are arranged on the left side and the right side of the optical fiber; the sheath is coated on the outer sides of the optical fibers and the reinforcing piece, and the cross section of the shape of the sheath is rectangular; and the separation blocking pieces are arranged on the upper side and the lower side of the optical fiber and arranged in the sheath, two side edges of the separation blocking pieces bend towards the outer side of the sheath, the sheath coated on the upper side and the lower side of the optical fiber is respectively divided into a first part and a second part by the separation blocking pieces, the first part is close to the optical fiber, and the second part is far away from the optical fiber. The butterfly cable is not provided with the groove, so that dust can be prevented from being accumulated, the thickness of the sheath on the outer side of the optical fiber is increased compared with the existing butterfly cable, the protection of the optical fiber is improved, and the sheath is prevented from being torn by itself during installation. And the arrangement of the separation baffle plate is beneficial to tearing the sheath to obtain the bare optical fiber when needed.

Description

Butterfly cable
The application is a divisional application with the application date of 2016, 7, 15 and the application number of 201610575300.1 and the name of 'butterfly cable'.
Technical Field
The invention relates to the technical field of optical cables, in particular to a butterfly cable.
Background
At present, the optical cable applied to the subscriber leading-in section in the fiber-to-the-home network in a large scale generally adopts a butterfly cable. As shown in fig. 1, the center of the butterfly cable is an optical fiber 100 as an optical communication unit, two sides of the optical fiber 100 are respectively provided with a reinforcing core 200 for protecting the optical fiber, the outer sides of the optical fiber 100 and the reinforcing core 200 are wrapped with a sheath 300, and the sheath 300 is flat in shape and convenient for indoor laying. Generally, the jacket 300 is provided with grooves 301 at both sides of the optical fiber 100, and the thickness of the jacket at the bottom of the grooves 301 is smaller than that at other positions, so that the jacket 300 can be easily torn from the bottom of the grooves 301 to take out the optical fiber 100. However, dust is easily accumulated at the groove 301, and the protection of the optical fiber 100 is very poor due to the thin sheath 300 at the groove 301, so that the optical fiber 100 is easily exposed due to self-tearing caused by the force applied at the groove 301 during the installation process.
Disclosure of Invention
The invention aims to solve the problems and provides a butterfly cable which is not provided with a groove, thereby avoiding dust accumulation, increasing the thickness of a sheath on the outer side of an optical fiber, improving the protection of the optical fiber and avoiding the self-tearing of the sheath during installation.
In order to achieve the above object, the present invention provides a butterfly cable, including: an optical fiber; the reinforcing pieces are arranged on the left side and the right side of the optical fiber; the sheath is coated on the outer sides of the optical fibers and the reinforcing piece, and the cross section of the shape of the sheath is rectangular; and the separation blocking pieces are arranged on the upper side and the lower side of the optical fiber and arranged in the sheath, two side edges of the separation blocking pieces bend towards the outer side of the sheath, the sheath coated on the upper side and the lower side of the optical fiber is respectively divided into a first part and a second part by the separation blocking pieces, the first part is close to the optical fiber, and the second part is far away from the optical fiber.
In an embodiment of the invention, a plurality of first cutting edges are arranged on the outer side of the sheath corresponding to the second part of the sheath, and the plurality of first cutting edges are arranged at intervals along the length direction of the butterfly cable.
In an embodiment of the present invention, the first cutting blades penetrate the second portion of the sheath.
In an embodiment of the invention, a plurality of second cutting edges are disposed on two side edges of the separation blade, and the plurality of second cutting edges are arranged at intervals along the length direction of the separation blade.
In an embodiment of the present invention, the cross section of the separation blade is in a shape of a trapezoid groove.
In an embodiment of the present invention, the cross section of the separation blade is arc-shaped groove.
In an embodiment of the invention, the shortest distance between the separation blade and the optical fiber is 0.1mm-0.2 mm.
In an embodiment of the present invention, the sheath is made of flame retardant polyethylene material.
In one embodiment of the present invention, the reinforcing member is made of steel wire, KFRP, GFRP or QFRP material.
Compared with the prior art, the technical scheme has the beneficial effects that:
according to the butterfly cable, the cross section of the appearance of the sheath is rectangular, namely the sheath is not provided with the groove, so that the butterfly cable laid indoors is not easy to accumulate dust. Because the cross section of the appearance of the sheath is rectangular and is not provided with the groove, compared with the existing butterfly cable, the butterfly cable has the advantages that the thickness of the sheath on the outer side of the optical fiber is relatively thick, the protection of the optical fiber is improved, and the butterfly cable can be prevented from being torn by the sheath due to external force during installation. The sheath is internally provided with a separation blocking piece, the sheath on the upper side or the lower side of the optical fiber is divided into a first part and a second part due to the separation blocking effect of the separation blocking piece, the second part is applied with force towards the outer side, the second part can be torn, and then the separation blocking piece is taken out, so that the butterfly cable can be changed into a common butterfly cable in the prior art, and the exposed optical fiber can be obtained by tearing the first part. In the installation process, the force applied to the butterfly cable by twisting or collision is not the force applied to the second part and towards the outer side of the second part, so that the situation that the sheath is torn to expose the optical fiber is not easy to occur in the installation process. The user purposefully tears the jacket to gain access to the bare optical fiber as needed for use. When the bare optical fiber is needed, a user only needs to tear the second part of the sheath, the separation blade and the first part of the sheath in sequence to obtain the bare optical fiber, and the bare optical fiber is very convenient.
Drawings
FIG. 1 is a schematic structural diagram of a conventional butterfly cable;
FIG. 2 is a schematic structural view of one embodiment of a butterfly cable of the invention;
FIG. 3 is a schematic structural view of another embodiment of a butterfly cable of the invention;
FIG. 4 is a schematic perspective view of an embodiment of a butterfly cable of the invention;
fig. 5 is a schematic structural diagram of a separation blade of an embodiment of the butterfly cable of the invention.
Detailed Description
The technical solution of the present invention is described in detail and fully with reference to the accompanying drawings.
Referring to fig. 2, 4 and 5, the present invention provides a butterfly cable, including: optical fiber 1, strength member 2, jacket 3, and barrier sheet 4. The strength members 2 are disposed at left and right sides of the optical fiber 1. The jacket 3 covers the optical fiber 1 and the strength member 2. The cross section of the shape of the sheath 3 is rectangular, namely the sheath 3 is not provided with a groove, so that the butterfly cable laid indoors is not easy to accumulate dust. Four angles of the rectangle can be round corners, and the appearance is more attractive. Because the cross section of the appearance of the sheath 3 is rectangular and is not provided with a groove, compared with the existing butterfly cable, the butterfly cable has the advantages that the thickness of the sheath 3 at the outer side of the optical fiber 1 is relatively thicker, the protection of the optical fiber 1 is improved, and the sheath 3 can be prevented from being torn by itself under the action of external force when the butterfly cable is installed.
The separation blocking pieces 4 are arranged on the upper side and the lower side of the optical fiber 1 and in the sheath 3. Both sides of the blocking piece 4 are bent toward the outside of the sheath 3, and the blocking piece 4 divides the sheath 3 coated on both upper and lower sides of the optical fiber 1 into a first portion 31 and a second portion 32, respectively, the first portion 31 being close to the optical fiber 1 and the second portion 32 being far from the optical fiber 1. Due to the blocking function of the blocking piece 4, the sheath 3 on the upper side or the lower side of the optical fiber 1 is divided into a first part 31 and a second part 32, the second part 32 is applied with force towards the outer side, the second part 32 can be torn, the blocking piece 4 is taken out, the butterfly cable can be changed into a common butterfly cable in the prior art, and the first part 31 is torn, so that the bare optical fiber 1 can be obtained. During installation, the force applied to the butterfly cable by twisting or collision is not the force applied to the second portion 32 and directed to the outside of the second portion 32, so that the sheath 3 is not easily torn to expose the optical fiber 1. The user can obtain the bare optical fiber 1 by purposefully tearing the sheath 3 according to the use requirement. As can be seen from the above analysis, the user can obtain the bare optical fiber 1 by simply tearing the second portion 32 of the sheath 3, the barrier 4, and the first portion 31 of the sheath 3 in sequence, which is very convenient.
The "left and right sides of the optical fiber" referred to herein is the position shown in fig. 2, and refers to the left and right sides of the optical fiber, but is not intended to limit the present invention, and changes in the "left and right sides of the optical fiber" when the butterfly cable is rotated. Similarly, the description of "both the upper and lower sides of the optical fiber" in the present specification refers to the upper and lower sides of the optical fiber with reference to the position shown in fig. 2, and the present invention is not limited thereto.
The outer side of the sheath 3 is provided with a plurality of first cutting knife edges 321 corresponding to the second part 32 of the sheath 3, and the plurality of first cutting knife edges 321 are arranged at intervals along the length direction of the butterfly cable. Then after tearing a portion of the second portion 32 of the sheath 3 along the length of the cable, the second portion 32 can be torn apart without the aid of other tools, so that one end of the cable is torn, while the other portion is not affected. Further, the plurality of first cutting blades 321 penetrate the second portion 32 of the sheath 3, so that the second portion 32 can be easily cut after the second portion 32 is cut.
A plurality of second cutting edges 41 are arranged on two side edges of the separation blade 4, and the plurality of second cutting edges 41 are arranged at intervals along the length direction of the separation blade 4. The second cutting blade 41 can be used to tear the barrier 4 directly, and after the second portion 32 of the sheath 3 is torn, the barrier 4 can be torn without using other tools, so that the first portion 31 of the sheath 3 is exposed, and the exposed optical fiber 1 can be obtained by tearing the first portion 31 of the sheath 3.
In this embodiment, the cross section of the blocking piece 4 is in a trapezoid groove shape, the notch faces the outside of the sheath 3, the second part 32 of the sheath 3 is filled in the trapezoid groove, and the second part 32 of the sheath 3 is torn to become the existing butterfly cable. The baffle 4 has a simple structure, separates the sheath 3, improves the protection effect of the sheath 3 on the optical fiber 1, and ensures the easy tearing performance of the sheath 3 when the sheath needs to be torn. However, the barrier sheet 4 may have other shapes. In another embodiment, as shown in fig. 3, the barrier 4 has an arc-shaped groove in cross section, the notch faces the outside of the sheath 3, and the second portion 32 of the sheath 3 is filled in the arc-shaped groove.
The second portion 32 of the sheath 3 is a tear point at the position corresponding to the two sides of the baffle plate 4, where the thickness cannot be too thin nor too thick. The second portion 32 is easily torn by a twisting force during installation, so that the protective effect of the sheath 3 on the optical fiber 1 is weakened; too thick makes it difficult to tear the second portion 32, and when the bare optical fiber 1 is required for installation, the second portion 32 needs to be torn by a special tool, which makes installation inconvenient. In this embodiment, the thickness d of the second portion 32 corresponding to the two side edges of the separation blade 4 is 0.05mm-0.1mm, and is neither too thin nor too thick, the second portion 32 is not easily torn by the twisting force during installation, the protective effect of the sheath 3 on the optical fiber 1 is ensured, the second portion 32 can be directly torn by a hand when the force is applied, and the installation is facilitated without using a special tool.
The shortest distance from the separation baffle 4 to the optical fiber 1 is 0.1mm-0.2mm, namely the minimum thickness of the first part 31 is 0.1mm-0.2mm, which plays a certain protection role for the optical fiber 1, and after the second part 32 and the separation baffle 4 are torn, the first part 31 is also easily torn, which is convenient for obtaining the bare optical fiber 1.
The sheath 3 is made of flame-retardant polyethylene material and has fireproof performance. The reinforcing member 2 may be made of a metal material such as a steel wire; non-metallic materials such as KFRP, GFRP or QFRP materials may also be used.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.

Claims (1)

1. A butterfly cable, comprising:
an optical fiber;
the reinforcing pieces are arranged on the left side and the right side of the optical fiber;
the sheath is coated on the outer sides of the optical fibers and the reinforcing piece, and the cross section of the shape of the sheath is rectangular; and
the separation blocking pieces are arranged on the upper side and the lower side of the optical fiber and arranged in the sheath, two side edges of the separation blocking pieces bend towards the outer side of the sheath, the sheath coated on the upper side and the lower side of the optical fiber is respectively divided into a first part and a second part by the separation blocking pieces, the first part is close to the optical fiber, and the second part is far away from the optical fiber;
a plurality of first cutting knife edges are arranged on the outer side of the sheath corresponding to the second part of the sheath, and the first cutting knife edges are arranged at intervals along the length direction of the butterfly cable; a plurality of second cutting edges are arranged on two side edges of the separation blade and are arranged at intervals along the length direction of the separation blade; the shortest distance from the separation block piece to the optical fiber is 0.1mm-0.2 mm.
CN201910128905.XA 2016-07-15 2016-07-15 Butterfly cable Active CN109752808B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910128905.XA CN109752808B (en) 2016-07-15 2016-07-15 Butterfly cable

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610575300.1A CN105974543B (en) 2016-07-15 2016-07-15 Butterfly cable
CN201910128905.XA CN109752808B (en) 2016-07-15 2016-07-15 Butterfly cable

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201610575300.1A Division CN105974543B (en) 2016-07-15 2016-07-15 Butterfly cable

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CN109752808A CN109752808A (en) 2019-05-14
CN109752808B true CN109752808B (en) 2020-07-03

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CN201610575300.1A Active CN105974543B (en) 2016-07-15 2016-07-15 Butterfly cable
CN201910131017.3A Active CN109752809B (en) 2016-07-15 2016-07-15 Butterfly-shaped optical cable
CN201910128905.XA Active CN109752808B (en) 2016-07-15 2016-07-15 Butterfly cable

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CN201610575300.1A Active CN105974543B (en) 2016-07-15 2016-07-15 Butterfly cable
CN201910131017.3A Active CN109752809B (en) 2016-07-15 2016-07-15 Butterfly-shaped optical cable

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107290831B (en) * 2017-07-31 2019-05-24 杭州富通通信技术股份有限公司 Butterfly optical cable
CN111399147B (en) * 2020-04-29 2024-07-26 成都亨通光通信有限公司 Capacity-expansion weather-resistant rural household lead-in optical cable
CN113970819B (en) * 2021-10-26 2023-08-01 深圳新澳科电缆有限公司 Detachable combined butterfly cable

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Publication number Publication date
CN109752809A (en) 2019-05-14
CN109752808A (en) 2019-05-14
CN105974543B (en) 2019-03-22
CN105974543A (en) 2016-09-28
CN109752809B (en) 2020-09-29

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Effective date of registration: 20210225

Address after: 311400 Yinhu Development Zone, Fuyang District, Hangzhou City, Zhejiang Province

Patentee after: HANGZHOU FUTONG COMMUNICATION TECHNOLOGY Co.,Ltd.

Patentee after: Tianjin Futong Information Technology Co.,Ltd.

Address before: 311400 Yinhu Development Zone, Fuyang District, Hangzhou City, Zhejiang Province

Patentee before: HANGZHOU FUTONG COMMUNICATION TECHNOLOGY Co.,Ltd.

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Address before: 311400 Yinhu Development Zone, Fuyang District, Hangzhou City, Zhejiang Province

Patentee before: HANGZHOU FUTONG COMMUNICATION TECHNOLOGY Co.,Ltd.

Patentee before: Tianjin Futong Information Technology Co.,Ltd.