CN211857003U - High-strength indoor branch optical cable - Google Patents
High-strength indoor branch optical cable Download PDFInfo
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- CN211857003U CN211857003U CN202020430285.3U CN202020430285U CN211857003U CN 211857003 U CN211857003 U CN 211857003U CN 202020430285 U CN202020430285 U CN 202020430285U CN 211857003 U CN211857003 U CN 211857003U
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Abstract
The utility model discloses an indoor optical cable that branches of high strength, weave stratum reticulare and oversheath layer including central core reinforcement, six optical fiber bundles of group, hexagonal arc support, filling layer, insulating layer, spiral steel pipe layer, metal, the filling layer center is located to hexagonal arc support, the equidistant six arcs of being equipped with in the hexagonal arc support outside, each the optical fiber bundle is located in the arc respectively. The utility model can effectively improve the whole mechanical strength of the optical cable and prevent the optical fiber from being bent or broken in the wiring process by arranging the spiral steel pipe layer and the metal woven net layer in the optical cable; be equipped with hexagonal arc support at the optical cable center, when the optical fiber bundle is receiving side direction extrusion effort, micro-deformation can take place for hexagonal arc support, reaches the effect of buffering extrusion effort, and the setting of core is strengthened at the center, can provide the supporting role to hexagonal arc support, prevents that hexagonal arc support inside deformation is too big, maintains optical cable inner structure's stability.
Description
Technical Field
The utility model relates to an optical cable technical field especially relates to a high strength indoor branch optical cable.
Background
In the prior art, with the continuous development of optical communication services, the trend from fiber to the home and from fiber to the desktop is a necessary trend for the future optical communication technology and the development of optical fiber network construction. The indoor optical cable is simple in structure, consists of a single-core tight-buffered optical fiber and a sheath layer coated on the surface of the single-core tight-buffered optical fiber, is simple in production process, low in overall mechanical strength, easy to bend or break in an indoor wiring process, and capable of influencing the signal transmission speed of the optical fiber, and capable of causing interruption of optical signal transmission by serious people; in addition, in an indoor dense layout environment, due to poor heat dissipation, nearby electronic instruments or equipment may be burned, which may easily burn optical fibers inside the optical cable, resulting in interruption of transmission signals.
Accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the high-strength indoor branch optical cable has high overall mechanical strength, compression resistance, impact resistance and a certain flame-retardant effect.
The technical scheme of the utility model as follows: a high-strength indoor branch optical cable comprises a central reinforcing core, six groups of optical fiber bundles, a hexagonal arc-shaped support, a filling layer, an insulating layer, a spiral steel pipe layer, a metal woven net layer and an outer sheath layer; each optical fiber bundle comprises a loose tube sleeve and a plurality of optical fibers, each optical fiber is arranged in the loose tube sleeve, and a gap area between the loose tube sleeve and the optical fiber is filled with optical fiber ointment;
the filling layer is filled with aramid fiber yarns, the insulating layer is arranged outside the filling layer, the spiral steel pipe layer is arranged outside the insulating layer, the metal woven net layer is arranged outside the spiral steel pipe layer, and the outer sheath layer is arranged outside the metal woven net layer;
the hexagonal arc support is arranged at the center of the filling layer, a through hole is formed in the middle of the hexagonal arc support, the center reinforcing core is arranged in the through hole, six arc-shaped grooves are formed in the outer side of the hexagonal arc support at equal intervals, each optical fiber bundle is arranged in each arc-shaped groove, a plurality of steel bars are arranged on the spiral steel pipe layer, and the steel bars are spirally arranged between the insulating layer and the metal woven net layer.
By adopting the technical scheme, in the high-strength indoor branch optical cable, the hexagonal arc-shaped support is made of polyurethane rubber.
By adopting the technical scheme, in the high-strength indoor branch optical cable, the central reinforced core is made of the nylon rod.
By adopting the technical scheme, in the high-strength indoor branch optical cable, the metal braided net layer is braided by stainless steel wires.
By adopting the technical scheme, in the high-strength indoor branch optical cable, the insulating layer is the halogen-free low-smoke flame-retardant cross-linked polyolefin.
By adopting the technical scheme, in the high-strength indoor branch optical cable, the outer sheath is made of polyvinyl chloride.
By adopting the technical scheme, in the high-strength indoor branch optical cable, the outer sheath layer is also provided with the wear-resistant layer.
By adopting the technical proposal, the utility model discloses an optical cable sets up spiral steel pipe layer and metal woven net layer, can effectively improve the whole mechanical strength of optical cable, prevents that optical cable from being bent or cracked in the wiring process, influencing the transmission speed of optic fibre; the hexagonal arc-shaped support is arranged in the center of the optical cable, when the optical fiber bundle is subjected to lateral extrusion acting force, the hexagonal arc-shaped support can be subjected to micro-deformation to achieve the effect of buffering the extrusion acting force, and the central reinforcing core can provide a supporting effect for the hexagonal arc-shaped support to prevent the optical fiber bundle from being loose in structure due to excessive deformation inside the hexagonal arc-shaped support so as to maintain the stability of the internal structure of the optical cable; the filling layer and the insulating layer have certain flame retardant effect, so that the optical fiber bundle is effectively prevented from being burnt by external fire, and the optical cable is prevented from being interrupted in transmission of optical signals due to the fire.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the present embodiment provides a high-strength indoor branch optical cable, which includes a central reinforced core 10, six sets of optical fiber bundles 2, a hexagonal arc-shaped bracket 3, a filling layer 4, an insulating layer 5, a spiral steel pipe layer 6, a metal braided mesh layer 7, and an outer sheath layer 8; each optical fiber bundle 2 comprises a loose tube sleeve 21 and a plurality of optical fibers 22, each optical fiber 22 is arranged in the loose tube sleeve 21, and a gap area between the loose tube sleeve 21 and the optical fibers 22 is filled with optical fiber ointment 23.
The filling layer 4 is filled with aramid fiber silk, the filling layer 4 is equipped with insulating layer 5 outward, the insulating layer 5 is equipped with spiral steel pipe layer 6 outward, spiral steel pipe layer 6 is equipped with metal woven mesh layer 7 outward, metal woven mesh layer 7 is equipped with oversheath layer 8 outward.
In this embodiment, each optical fiber bundle 2 includes a loose tube 21 and a plurality of optical fibers 22, each optical fiber 22 is disposed in the loose tube 21, and a gap area between the loose tube 21 and the optical fiber 22 is filled with an optical fiber ointment 23. The optical fiber 22 is used as a main body for optical signal transmission, the material is fragile and easy to break, and the optical fiber 22 is arranged in the loose tube sleeve 21, so that the optical fiber 22 can be initially protected, and the optical fiber 22 is prevented from being damaged by internal stress or external extrusion acting force. Meanwhile, the loose tube sleeve 21 is filled with the optical fiber ointment 23, so that the optical fiber 22 can be always in a stable structural state in the loose tube sleeve 21, and the influence of impact, vibration and bending acting force on the optical fiber is reduced.
The arrangement of the hexagonal arc-shaped bracket 3 can reduce the lateral extrusion acting force applied to the optical fiber bundle 2. Specifically, when optical cable 1 receives external force and assaults, fiber bundle 2 can produce a yawing force to hexagonal arc support 3, and hexagonal arc support 3 can produce little deformation to the extrusion force that fiber bundle 2 received is reduced in the buffering. Preferably, the hexagonal arc-shaped bracket 3 is made of polyurethane rubber. The polyurethane rubber has good tensile strength and elasticity, and can play a role in buffering and reducing pressure when being subjected to extrusion force acted by the outside. The setting of core 10 is strengthened at the center can provide supporting role to hexagonal arc support 3, prevents that the inside deformation of hexagonal arc support 3 is too big, leads to the optical fiber bundle 2 structure loose to maintain the stability of optical cable 1 inner structure. Preferably, the central reinforcing core 10 is made of nylon rod. The nylon rod has high mechanical strength, good toughness, high tensile strength and high compressive strength, and can effectively maintain the stability of the hexagonal arc-shaped support 3. In addition, the weight of the nylon rod is light, the overall weight of the optical cable 1 can be effectively reduced, and indoor wiring is facilitated.
In this embodiment, the filling layer 4 is filled with aramid fiber filaments. Aramid fiber silk light in weight has superhigh intensity and high temperature resistance, fills in 2 outsides of optic fibre bundle, when maintaining 2 overall structure of optic fibre bundle, still has fire-retardant effect, can extinguish the intensity of a fire when meeting with the naked light, effectively avoids optic fibre bundle 2 to be burnt out by the intensity of a fire, improves optical cable 1's safety in utilization. And an insulating layer 5 is arranged outside the filling layer 4. Preferably, the insulating layer 5 is a halogen-free low-smoke flame-retardant cross-linked polyolefin. The halogen-free low-smoke flame-retardant cross-linked polyolefin has the characteristics of good insulating property and high temperature resistance, and the adaptability of the optical cable 1 under the high-temperature working condition is enhanced.
The spiral steel pipe layer 6 is arranged outside the insulating layer 5, the spiral steel pipe layer 6 is provided with a plurality of steel bars 61, and the steel bars 61 are spirally arranged between the insulating layer 5 and the metal woven net layer 7. In this embodiment, the provision of the spiral steel pipe layer 6 can improve the overall mechanical strength of the optical cable 1, and reduce excessive bending or breaking of the optical fiber 22 during the wiring of the optical cable 1, while the provision of the spirally-provided steel rod 61 can improve the bending strength of the optical cable 1. And a metal woven net layer 7 is arranged outside the spiral steel pipe layer 6. The arrangement of the metal woven mesh layer 7 improves the anti-electromagnetic interference capability of the optical cable 1 while enhancing the compressive strength of the optical cable 1. Preferably, the metal mesh layer 7 is woven from stainless steel wires.
An outer sheath layer 8 is arranged outside the metal braided net layer 7. The arrangement of the outer sheath layer 8 can improve the waterproof and moistureproof capabilities of the optical cable 1, and prevent external water leakage from entering the optical cable 1. Preferably, the outer sheath 8 is polyvinyl chloride. Polyvinyl chloride has not only good flexibility but also good flame retardancy. The flexible property can facilitate the wiring arrangement of users, and the fire-retardant property can improve the fire-proof performance of the optical cable 1.
In order to improve the wear resistance of the optical cable 1, preferably, a wear-resistant layer 9 is further arranged outside the outer sheath layer 8. The arrangement of the wear-resistant layer 9 can reduce the surface layer damage of the optical cable 1 generated in the laying and dragging process. Further, the wear-resistant layer 9 is nitrile rubber. The nitrile rubber has excellent wear resistance, and can effectively reduce the damage to the wear-resistant layer 9 in the wire pulling process.
By adopting the technical proposal, the utility model discloses an optical cable sets up spiral steel pipe layer and metal woven net layer, can effectively improve the whole mechanical strength of optical cable, prevents that optical cable from being bent or cracked in the wiring process, influencing the transmission speed of optic fibre; the hexagonal arc-shaped support is arranged in the center of the optical cable, when the optical fiber bundle is subjected to lateral extrusion acting force, the hexagonal arc-shaped support can be subjected to micro-deformation to achieve the effect of buffering the extrusion acting force, and the central reinforcing core can provide a supporting effect for the hexagonal arc-shaped support to prevent the optical fiber bundle from being loose in structure due to excessive deformation inside the hexagonal arc-shaped support so as to maintain the stability of the internal structure of the optical cable; the filling layer and the insulating layer have certain flame retardant effect, so that the optical fiber bundle is effectively prevented from being burnt by external fire, and the optical cable is prevented from being interrupted in transmission of optical signals due to the fire.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A high-strength indoor branch optical cable is characterized in that: the cable comprises a central reinforcing core, six groups of optical fiber bundles, a hexagonal arc-shaped bracket, a filling layer, an insulating layer, a spiral steel pipe layer, a metal woven net layer and an outer sheath layer; each optical fiber bundle comprises a loose tube sleeve and a plurality of optical fibers, each optical fiber is arranged in the loose tube sleeve, and a gap area between the loose tube sleeve and the optical fiber is filled with optical fiber ointment;
the filling layer is filled with aramid fiber yarns, the insulating layer is arranged outside the filling layer, the spiral steel pipe layer is arranged outside the insulating layer, the metal woven net layer is arranged outside the spiral steel pipe layer, and the outer sheath layer is arranged outside the metal woven net layer;
the hexagonal arc support is arranged at the center of the filling layer, a through hole is formed in the middle of the hexagonal arc support, the center reinforcing core is arranged in the through hole, six arc-shaped grooves are formed in the outer side of the hexagonal arc support at equal intervals, each optical fiber bundle is arranged in each arc-shaped groove, a plurality of steel bars are arranged on the spiral steel pipe layer, and the steel bars are spirally arranged between the insulating layer and the metal woven net layer.
2. A high strength indoor drop cable according to claim 1, wherein: the hexagonal arc-shaped bracket is made of polyurethane rubber.
3. A high strength indoor drop cable according to claim 1, wherein: the central reinforcing core is made of a nylon rod.
4. A high strength indoor drop cable according to claim 1, wherein: the metal braided net layer is braided by stainless steel wires.
5. A high strength indoor drop cable according to claim 1, wherein: the insulating layer is halogen-free low-smoke flame-retardant cross-linked polyolefin.
6. A high strength indoor drop cable according to claim 1, wherein: the outer sheath is made of polyvinyl chloride.
7. A high strength indoor drop cable according to claim 1, wherein: and a wear-resistant layer is also arranged outside the outer sheath layer.
8. A high strength indoor drop cable according to claim 7, wherein: the wear-resistant layer is made of nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020430285.3U CN211857003U (en) | 2020-03-27 | 2020-03-27 | High-strength indoor branch optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020430285.3U CN211857003U (en) | 2020-03-27 | 2020-03-27 | High-strength indoor branch optical cable |
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| Publication Number | Publication Date |
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| CN211857003U true CN211857003U (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020430285.3U Active CN211857003U (en) | 2020-03-27 | 2020-03-27 | High-strength indoor branch optical cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415696A (en) * | 2020-12-29 | 2021-02-26 | 东莞市特旺通信科技有限公司 | Water-blocking high-temperature-resistant irradiation-resistant multi-core optical cable and preparation method thereof |
-
2020
- 2020-03-27 CN CN202020430285.3U patent/CN211857003U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415696A (en) * | 2020-12-29 | 2021-02-26 | 东莞市特旺通信科技有限公司 | Water-blocking high-temperature-resistant irradiation-resistant multi-core optical cable and preparation method thereof |
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