CN110794533A - Self-supporting butterfly-shaped optical cable capable of overcoming influence of stripping groove on optical fiber protection strength - Google Patents
Self-supporting butterfly-shaped optical cable capable of overcoming influence of stripping groove on optical fiber protection strength Download PDFInfo
- Publication number
- CN110794533A CN110794533A CN201911047251.4A CN201911047251A CN110794533A CN 110794533 A CN110794533 A CN 110794533A CN 201911047251 A CN201911047251 A CN 201911047251A CN 110794533 A CN110794533 A CN 110794533A
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- CN
- China
- Prior art keywords
- loose tube
- stripping
- cross
- sleeve
- protective sleeve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
-
- 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
Abstract
The invention discloses a self-supporting butterfly-shaped optical cable capable of overcoming the influence of a stripping groove on the protection strength of an optical fiber, and overcomes the influence of a protective sleeve stripping groove on the protection strength of the optical fiber. The optical fiber stripping device comprises an upper protective sleeve (1), a lower protective sleeve (4), a loose tube (6) and an optical fiber (7), wherein two pairs of stripping grooves (8) with right-angled triangle-shaped cross sections are symmetrically arranged on two side edges of the lower protective sleeve (4); the extension lines of the right-angle sides (801) of the two stripping grooves (8) at the lower end of the lower protective sleeve are arranged below the cross section area of the loose tube (6), the extension lines of the right-angle sides (803) of the two stripping grooves (8) at the upper end of the lower protective sleeve (4) are arranged above the cross section area of the loose tube (6), and the notches of the two stripping grooves on the two side edges of the lower protective sleeve (4) are arranged on the outer sides of the outer contour lines at the two ends of the cross section area of the loose tube. Excellent fracture resistance, reliable operation and long service life.
Description
Technical Field
The invention relates to an optical communication device, in particular to a self-supporting butterfly-shaped optical cable.
Background
At present, a butterfly optical cable becomes the most basic network transmission tool, and is named after the appearance of a butterfly outside the cross section, the butterfly optical cable is a widely applied user access optical cable, is an optical cable which is applied to a user lead-in section in an FTTH (fiber to the home) network in a large scale, is also applicable to users of networks such as FTTO (fiber to the home) and FTTB (fiber to the home) and the like accessed by other optical fibers, and plays a unique role in networks such as an intelligent building, a digital cell, a campus network, a local area network and the like; the butterfly-shaped optical cable has the characteristics of small optical cable outer diameter, light weight, low cost, good flexibility and bending performance. In order to improve the mechanical strength of the butterfly-shaped optical cable, the prior art has a plurality of technical schemes of self-supporting butterfly-shaped optical cables, for example, a patent with the patent publication number of CN208580231U, which proposes a safe self-supporting butterfly-shaped optical cable convenient for stripping, wherein the groove structure of the protective layer is mainly improved, grooves are symmetrically formed on two sides of the outer protective layer, and raised grains are symmetrically formed in the two grooves, so as to facilitate the breaking and stripping of the optical cable; for another example, patent publication No. CN206096569U proposes a double-jacket self-supporting butterfly-shaped optical cable, which improves the properties of the self-supporting optical cable, such as strength, by adding a layer of jacket outside the conventional self-supporting butterfly-shaped optical cable. However, in a longitudinal view of various self-supporting butterfly cables in the prior art, there is no common defect, that is, the grooves of the protective sleeve are all aligned with the arrangement positions of the optical fibers, the protective sleeve is used for protecting the optical fibers and plays a role in buffering external force when external force is directly applied to the optical fibers, and the grooves formed on the protective sleeve at the corresponding positions of the optical fibers greatly reduce the buffering capacity of the protective sleeve on impact of the external force exactly at the positions of the optical fibers to be protected, so that the protection capacity of the protective sleeve on the optical fibers is sharply reduced, the external force can directly act on the optical fibers through the peeling grooves of the protective sleeve, and the optical fibers are easily broken.
Disclosure of Invention
The invention provides a self-supporting butterfly-shaped optical cable capable of overcoming the influence of a stripping groove on the protection strength of an optical fiber, and overcomes the influence of a protective sleeve stripping groove on the protection strength of the optical fiber.
The invention solves the technical problems by the following technical scheme:
a self-supporting butterfly-shaped optical cable capable of overcoming the influence of stripping grooves on the protection strength of optical fibers comprises an upper protection sleeve, a lower protection sleeve, hanging strips, hanging wires, a reinforcing core, a loose sleeve and optical fibers, wherein the optical fibers are arranged in the loose sleeve, the hanging wires are arranged in the upper protection sleeve, the upper protection sleeve is connected with the top end face of the lower protection sleeve through the hanging strips, the cross section of the lower protection sleeve is rectangular, the central axis of the lower protection sleeve is superposed with the central axis of the loose sleeve, and two pairs of stripping grooves with right-angled triangular cross sections are symmetrically arranged on two side edges of the lower protection sleeve; the extension lines of the right-angle sides of the two stripping grooves at the lower end of the lower protective sleeve are arranged below the cross section area of the loose tube, and the bevel sides of the two stripping grooves at the lower end are arranged below the right-angle sides; the extension lines of the right-angle sides of the two stripping grooves at the upper end of the lower protective sleeve are arranged above the cross section area of the loose tube, and the bevel sides of the two stripping grooves at the upper end are arranged above the right-angle sides; two notches of peeling off the recess on the left side edge on the lower protective sheath are arranged on the left outer side of the left end outer contour line of the cross section area of the loose tube, and two notches of peeling off the recess on the right side edge on the lower protective sheath are arranged on the right outer side of the right end outer contour line of the cross section area of the loose tube.
The cross section of the loose tube is rectangular or circular.
The self-supporting butterfly-shaped optical cable provided by the invention adopts the triangular stripping grooves, when the lower protective sleeve is stripped, the lower protective sleeve tears the connecting line at the bottom ends of the two triangular stripping grooves at two sides, and the connecting line is tangent to or superposed with the edge of the loose tube, so that the edge of the loose tube is exposed after the lower protective sleeve is torn, and the lower protective sleeve can be quickly stripped.
Drawings
Fig. 1 is a schematic structural view of a loose tube 6 of the present invention having a rectangular cross section;
fig. 2 is a schematic view of the loose tube 6 of the present invention when it is circular in cross section;
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
a self-supporting butterfly-shaped optical cable capable of overcoming the influence of stripping grooves on the protection strength of optical fibers comprises an upper protection sleeve 1, a lower protection sleeve 4, hanging strips 3, hanging wires 2, a reinforcing core 5, a loose tube 6 and optical fibers 7, wherein the optical fibers 7 are arranged in the loose tube 6, the hanging wires 2 are arranged in the upper protection sleeve 1, the upper protection sleeve 1 is connected with the top end face of the lower protection sleeve 4 through the hanging strips 3, the cross section of the lower protection sleeve 4 is rectangular, the central axis of the lower protection sleeve 4 is superposed with the central axis of the loose tube 6, and two pairs of stripping grooves 8 with right-angled triangular cross sections are symmetrically arranged on two side edges of the lower protection sleeve 4; the extension lines of the right-angle sides 801 of the two stripping grooves 8 at the lower end of the lower protective sleeve 4 are arranged below the cross-sectional area of the loose tube 6, and the bevel sides 802 of the two stripping grooves 8 at the lower end are arranged below the right-angle sides 801; the extension lines of the right-angled sides 803 of the two stripping grooves 8 at the upper end on the lower protective sheath 4 are arranged above the cross-sectional area of the loose tube 6, and the bevel sides 804 of the two stripping grooves 8 at the upper end are arranged above the right-angled sides 803; the notches of the two stripping grooves 8 on the left side edge of the lower protective sleeve 4 are arranged on the left outer side of the left end outer contour line of the cross section area of the loose tube 6, and the notches of the two stripping grooves 8 on the right side edge of the lower protective sleeve 4 are arranged on the right outer side of the right end outer contour line of the cross section area of the loose tube 6; the gaps arranged on the four stripping grooves are arranged outside the direct stress range of the loose tube 6 and the optical fiber 7, so that the reduction of the protective force on the gaps can not be directly conducted to the buffer area of the optical fiber 7, namely, the forward direct impact force borne on the gaps avoids the optical fiber 7, and the influence of the stripping grooves on the optical fiber protective strength is reduced to the minimum.
The cross-section of the loose tube 6 is rectangular or circular in shape. The triangle-shaped that the symmetry was seted up peels off recess 8 and is provided with two sets ofly, and this kind of structural setting can use the user to peel off protective sheath down from upper and lower both sides simultaneously, when loose sleeve pipe size is great, peels off back to protective sheath both sides down, the more taking out of the loose sleeve pipe of being convenient for.
The suspension wire 2 and the reinforcing core 5 of the invention both use FRP, and the upper protective sleeve 1, the lower protective sleeve 4 and the suspension belt 3 are all selected from low smoke halogen-free materials. Go up protective sheath, suspender, lower protective sheath and be low smoke and zero halogen material, low smoke and zero halogen material's fire behaviour is good, and the pressurized deformation is little when being heated. The outside cladding of loose tube 6 has the water blocking layer, through setting up the water blocking layer, can avoid optic fibre to wet, and perhaps the aquatic work still can have excellent operational reliability in humid environment, has widened the application scope of optical cable, still be provided with the insulation shielding layer outside the water blocking layer, the shielding property of optical cable can be strengthened to the insulation shielding layer, and it is lower to guarantee to receive the influence of environment in the optical cable use, has widened the range of application of optical cable, the shielding layer still twines outward has the aramid fiber, also pack in the loose tube has the aramid fiber, and the tensile strength of aramid fiber is very excellent, through the outside winding aramid fiber of loose tube to cladding optic fibre and with the inside aramid fiber that fills of loose tube, can promote the tensile strength of optical cable by a wide margin, guarantees that the optical cable can normally work under more abo.
Claims (2)
1. A self-supporting butterfly-shaped optical cable capable of overcoming the influence of stripping grooves on the protection strength of optical fibers comprises an upper protection sleeve (1), a lower protection sleeve (4), a hanging strip (3), a hanging wire (2), a reinforcing core (5), a loose tube (6) and optical fibers (7), wherein the optical fibers (7) are arranged in the loose tube (6), the hanging wire (2) is arranged in the upper protection sleeve (1), and the upper protection sleeve (1) is connected with the top end face of the lower protection sleeve (4) through the hanging strip (3), and the self-supporting butterfly-shaped optical cable is characterized in that the cross section of the lower protection sleeve (4) is rectangular, the central axis of the lower protection sleeve (4) is superposed with the central axis of the loose tube (6), and two pairs of stripping grooves (8) with right-angled triangular cross sections are symmetrically arranged on two; the extension lines of the right-angle sides (801) of the two stripping grooves (8) at the lower end of the lower protective sleeve (4) are arranged below the cross section area of the loose tube (6), and the bevel sides (802) of the two stripping grooves (8) at the lower end are arranged below the right-angle sides (801); the extension lines of the right-angle sides (803) of the two stripping grooves (8) at the upper end of the lower protective sleeve (4) are arranged above the cross section area of the loose tube (6), and the bevel sides (804) of the two stripping grooves (8) at the upper end are arranged above the right-angle sides (803); the breach setting that two on the left side on lower protective sheath (4) peeled off recess (8) is in the left outside of the regional left end outer contour line of the cross section of pine sleeve (6), and the breach setting that two on the right side on lower protective sheath (4) peeled off recess (8) is in the right outside of the regional right end outer contour line of the cross section of pine sleeve (6).
2. A self-supporting butterfly-shaped optical cable capable of overcoming the influence of the stripping groove on the protective strength of the optical fiber as claimed in claim 1, wherein the cross-section of the loose tube (6) is rectangular or circular in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911047251.4A CN110794533A (en) | 2019-10-30 | 2019-10-30 | Self-supporting butterfly-shaped optical cable capable of overcoming influence of stripping groove on optical fiber protection strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911047251.4A CN110794533A (en) | 2019-10-30 | 2019-10-30 | Self-supporting butterfly-shaped optical cable capable of overcoming influence of stripping groove on optical fiber protection strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110794533A true CN110794533A (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911047251.4A Pending CN110794533A (en) | 2019-10-30 | 2019-10-30 | Self-supporting butterfly-shaped optical cable capable of overcoming influence of stripping groove on optical fiber protection strength |
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| Country | Link |
|---|---|
| CN (1) | CN110794533A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111399150A (en) * | 2020-04-29 | 2020-07-10 | 西安西古光通信有限公司 | Separable butterfly-shaped leading-in optical cable assembly and optical cable stripping method based on same |
-
2019
- 2019-10-30 CN CN201911047251.4A patent/CN110794533A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111399150A (en) * | 2020-04-29 | 2020-07-10 | 西安西古光通信有限公司 | Separable butterfly-shaped leading-in optical cable assembly and optical cable stripping method based on same |
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