CN217360410U - Waterproof tail cable - Google Patents
Waterproof tail cable Download PDFInfo
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- CN217360410U CN217360410U CN202221976811.1U CN202221976811U CN217360410U CN 217360410 U CN217360410 U CN 217360410U CN 202221976811 U CN202221976811 U CN 202221976811U CN 217360410 U CN217360410 U CN 217360410U
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Abstract
The embodiment of the utility model provides a belong to communication optical cable technical field, concretely relates to waterproof tail cable. The embodiment of the utility model provides a solve the terminal poor problem of anti lateral pressure ability of the sub-cable that is exposed of relevant waterproof tail cable. The utility model discloses waterproof tail cable, including central reinforcement and sub-cable, the sub-cable is around establishing the outside at central reinforcement, and the sub-cable includes optic fibre, loose tube and the spiral armor that sets gradually from inside to outside, and the spiral armor includes stainless steel wire or bonderized steel wire, and the cross-section of stainless steel wire or bonderized steel wire is the platykurtic, and stainless steel wire or bonderized steel wire spiral are around establishing outside the loose tube. Through the arrangement, the spiral armor layer can improve the compression resistance and the impact resistance of the sub-cable, so that the exposed sub-cable is not easily damaged by mechanical impact, and the waterproof tail cable can be ensured to carry out normal signal transmission.
Description
Technical Field
The embodiment of the utility model provides a relate to communication optical cable technical field, especially relate to a waterproof tail cable.
Background
The communication optical cable is a main transmission tool of various information networks in the information society at present, and the waterproof tail cable is generally used for connecting a backbone optical cable line, an optical receiver and the like.
The waterproof tail cable in the related art comprises a sub cable, an armor layer and an outer sheath which are sequentially arranged from inside to outside, wherein the sub cable comprises an optical fiber and a tight cladding layer longitudinally wrapped outside the optical fiber, and the tight cladding layer protects the optical fiber; the armor layer has higher strength so as to improve the lateral pressure resistance of the waterproof tail cable; the outer sheath is used for improving the mechanical strength and the corrosion resistance of the waterproof tail cable. When the waterproof tail cable is used, the outer sheath and the armor layer with a certain length need to be stripped to expose the sub-cables, then various connectors are installed at the tail ends of the sub-cables, and the waterproof tail cable is connected with the optical receiver through the connectors.
The armor layer can improve the lateral pressure resistance of the sub-cable inside the armor layer, but the sub-cable with the outer sheath and the armor layer stripped basically does not have the lateral pressure resistance, and is easy to damage by unexpected mechanical impact in the later use process, so that the signal transmission of the waterproof tail cable is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a waterproof tail cable to solve the technical problem of poor lateral pressure resistance of the exposed sub-cable at the end of the relevant waterproof tail cable.
In order to achieve the above object, an embodiment of the present invention provides a waterproof tail cable, including: the optical cable comprises a central reinforcing piece and sub cables, wherein the sub cables are arranged on the outer side of the central reinforcing piece in a winding mode, the sub cables comprise optical fibers, a loose tube and a spiral armor layer which are sequentially arranged from inside to outside, the spiral armor layer comprises stainless steel wires or phosphatized steel wires, the sections of the stainless steel wires or the phosphatized steel wires are flat, and the stainless steel wires or the phosphatized steel wires are arranged outside the loose tube in a spiral winding mode.
In some embodiments, which may include the above embodiments, the sub-cable further includes a first water resistant layer disposed between the optical fibers and the loose tube.
In some embodiments, which may include the above embodiments, the sub-cable further includes an upjacket layer disposed between the optical fiber and the first water-resistant layer.
In some embodiments, which may include the above embodiments, the sub-cable further includes an inner sheath disposed outside of the spiral armor layer.
In some embodiments, which may include the above embodiments, the sub-cable further includes a second water-resistant layer disposed between the spiral armor layer and the inner sheath.
In some embodiments, which may include the above embodiments, the sub-cable further includes an aramid layer disposed between the spiral armor layer and the second water-resistant layer.
In some embodiments, which may include the above-described embodiments, the sub-cable is one, and the sub-cable is helically wound outside the central reinforcing member; or, the number of the sub cables is plural, and the plural sub cables are twisted outside the central reinforcing member.
In some embodiments that may include the foregoing embodiments, the waterproof trailing cable further includes a longitudinally-wrapped armor layer and an outer sheath, the longitudinally-wrapped armor layer is disposed outside the sub-cable, the outer sheath is disposed outside the longitudinally-wrapped armor layer, and the longitudinally-wrapped armor layer is surrounded by a plastic-coated aluminum tape.
In some embodiments, which may include the above embodiments, the plastic-coated aluminum strip includes a first connection aluminum strip, an intermediate aluminum strip, and a second connection aluminum strip, which are sequentially disposed along a circumferential direction of the sub-cable, and the first connection aluminum strip is overlapped outside the second connection aluminum strip.
In some embodiments, which may include the above embodiments, a length of a portion of the first connection aluminum strip coinciding with the second connection aluminum strip in a circumferential direction of the sub-cable is 2mm to 4 mm.
The embodiment of the utility model provides a waterproof tail cable, including central reinforcement and sub-cable, the sub-cable is around establishing the outside at central reinforcement, and the sub-cable includes from inside to outside optic fibre, loose sleeve pipe and the spiral armor that sets gradually, and the spiral armor includes stainless steel wire or bonderizing steel wire, and the cross-section of stainless steel wire or bonderizing steel wire is the platykurtic, and stainless steel wire or bonderizing steel wire spiral are around establishing outside the loose sleeve pipe. Through the arrangement, the spiral armor layer can improve the compression resistance and the impact resistance of the sub-cable, so that the exposed sub-cable is not easily damaged by mechanical impact, and the waterproof tail cable can be ensured to carry out normal signal transmission.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a cross-sectional view of a waterproof tail cable according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a waterproof pigtail cable according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a longitudinal clad armor layer in a waterproof tail cable provided by an embodiment of the present invention.
Description of reference numerals:
10. a central reinforcement; 101. Plastic coating;
20. a sub-cable; 210. An optical fiber;
220. loosening the sleeve; 230. A spiral armor layer;
240. an inner protective layer; 250. Water-blocking yarn;
201. a tight wrapping layer; 202. A first water resistant layer;
203. an aramid fiber layer; 204. A second water resistant layer;
30. longitudinally wrapping the material layer; 40. Longitudinally wrapping an armor layer;
401. a first connecting aluminum strip; 402. An intermediate aluminum strip;
403. a second connecting aluminum strip; 50. An outer sheath.
Detailed Description
First of all, it should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications.
Next, it should be noted that in the description of the embodiments of the present invention, the terms of direction or positional relationship indicated by the terms "inside", "outside", and the like are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" in the description of the embodiments of the present invention are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the related technology, the waterproof tail cable comprises a central reinforcing part, a sub cable, an armor layer and an outer sheath which are sequentially arranged from inside to outside, the sub cable is wound outside the central reinforcing part and comprises an optical fiber and a tight cladding layer longitudinally wrapped outside the optical fiber, and the tight cladding layer protects the optical fiber; the armor layer has higher strength so as to improve the lateral pressure resistance of the waterproof tail cable; the outer sheath is used for improving the mechanical strength and the corrosion resistance of the waterproof tail cable.
When the waterproof tail cable is used for connecting a backbone optical cable line and an optical receiver, the outer sheath and the armor layer are usually stripped in the length of 0.5 meter or 1 meter or longer to expose sub-cables, then various connectors are installed on the exposed sub-cables, and the waterproof tail cable is connected with the optical receiver and the like through the connectors.
Although the tensile and pressure resistance of the waterproof tail cable is protected by the armor layer and the outer sheath, the branch sub cable after stripping basically has no pressure and impact resistance, and the exposed sub cable is complex in use environment and likely to be damaged by unexpected mechanical impact to influence the signal transmission of the waterproof tail cable.
This embodiment provides a waterproof tail cable, through set up loose sleeve pipe in order to protect optical fiber outside optic fibre, then set up the spiral armor in loose sheathed tube outside, the resistance to compression and the shock resistance of sub-cable can be improved to the spiral armor, make the sub-cable that exposes be difficult for by mechanical shock damage to ensure that waterproof tail cable can carry out normal signal transmission.
As shown in fig. 1, the present embodiment provides a waterproof tail cable, which includes a central reinforcing member 10 and sub-cables 20, wherein the central reinforcing member 10 may be a steel wire, a fiberglass rod or a non-metal reinforced plastic rod, and preferably, the central reinforcing member 10 is a fiberglass rod or a non-metal reinforced plastic rod. The steel wire has an excessive hardness and may cause extrusion of the sub-cable 20. The hardness of the glass fiber rod and the nonmetal reinforced plastic rod is smaller than that of the steel wire, and the extrusion degree of the sub-cable 20 is smaller than that of the steel wire, so that the overall bending performance of the waterproof tail cable can be ensured. In an implementation where the central stiffener 10 is a non-metal reinforced plastic rod, the tensile strength of the non-metal reinforced plastic rod is not less than 1100MPa, and the elastic modulus is not less than 55GPa, so that the waterproof pigtail cable has sufficient tensile strength.
The sub-cable 20 includes an optical fiber 210, a loose tube 220 and a spiral armor layer 230, which are arranged from inside to outside, and the optical fiber 210 may be a g.652 optical fiber, a g.657 optical fiber or other types of optical fibers 210. The loose tube 220 is wrapped outside the optical fiber 210, the loose tube 220 can be formed by extrusion molding of common polybutylene terephthalate, also can be formed by extrusion molding of high-performance flame-retardant polybutylene terephthalate, and also can be formed by extrusion molding of flame-retardant polypropylene, and the loose tube 220 protects the optical fiber 210 and prevents the optical fiber 210 from being bent or damaged due to stress when the spiral armor layer 230 is arranged.
The spiral armor layer 230 comprises stainless steel wires or phosphated steel wires, the stainless steel wires or the phosphated steel wires are flattened and then spirally wound outside the loose tube 220, the spiral armor layer 230 can enable the lateral pressure resistance of the sub-cable 20 to reach over 1200N, so that the compression resistance and the impact resistance of the sub-cable 20 are improved, the exposed sub-cable 20 is not easily damaged by mechanical impact, and normal signal transmission of the waterproof tail cable is ensured.
The width after stainless steel wire or bonderizing steel wire flatten is greater than the external diameter of stainless steel wire or bonderizing steel wire that do not flatten, around establishing the spiral armor 230 of the same length, and the length of stainless steel wire or bonderizing steel wire that need after flattening is less than the length of stainless steel wire or bonderizing steel wire when not flattening, can reduce spiral armor 230's consumptive material like this, but also can reduce spiral armor 230's weight, makes final waterproof tail cable's weight littleer.
As shown in fig. 1, in some embodiments, the sub-cable 20 may further include an inner sheath 240, the inner sheath 240 is wrapped on the outer side of the spiral armor layer 230, and the inner sheath 240 may further reinforce the strength of the sub-cable 20, while the inner sheath 240 has a certain waterproof effect, so as to improve the waterproof performance of the sub-cable 20.
As shown in fig. 2, in some embodiments, sub-cable 20 may further include a first water-resistant layer 202, where first water-resistant layer 202 is disposed between optical fiber 210 and loose tube 220, first water-resistant layer 202 may include a material having a water-resistant effect, such as ointment, water-resistant yarn, fiber ointment, or water-resistant powder, and first water-resistant layer 202 is configured to block moisture so as to prevent optical fiber 210 from contacting moisture and increasing attenuation of optical fiber 210.
Further, a tight cladding layer 201 can be arranged between the optical fiber 210 and the first water-resistant layer 202, the tight cladding layer 201 is tightly sleeved outside the optical fiber 210, the tight cladding layer 201 can be made of low-smoke halogen-free flame-retardant polyolefin material or polyvinyl chloride material, the oxygen index of the tight cladding layer 201 is not less than 32% to ensure the flame-retardant performance of the tight cladding layer 201, the tight cladding layer 201 protects the optical fiber 210, and meanwhile, the tight cladding layer 201 can increase the strength of the optical fiber 210 and the strength of the sub-cable 20.
When the connector is connected to the end of the sub-cable 20, the inner sheath 240, the spiral armor 230, the loose tube 220, and the first water blocking layer 202 at the end of the sub-cable 20 need to be stripped off, only the optical fiber 210 and the tight cladding 201 remain, the tight cladding 201 is wrapped around the optical fiber 210, the connector is connected to the outside of the tight cladding 201, and the tight cladding 201 protects the optical fiber 210. The thickness of the tight-buffered layer 201 may be 0.6mm to 0.9mm to ensure the strength of the tight-buffered layer 201 so as not to damage the optical fiber 210 when the end of the sub-cable 20 is connected to the connector.
As shown in fig. 2, in some embodiments, a second water-resistant layer 204 may be disposed between the spiral armor layer 230 and the inner sheath 240, the second water-resistant layer 204 may include a material having a water-resistant effect, such as ointment, water-resistant yarn, fiber paste, or water-resistant powder, and the second water-resistant layer 204 is used for blocking water, so as to further improve the waterproof performance of the sub-cable 20.
Further, an aramid fiber layer 203 can be arranged between the second water-blocking layer 204 and the spiral armor layer 230, the aramid fiber layer 203 is wrapped on the outer side of the spiral armor layer 230, and the aramid fiber layer 203 can increase the tensile resistance of the waterproof tail cable.
The number of the sub-cables 20 may be one or more, and when the number of the sub-cables 20 is one, the sub-cables 20 are spirally wound on the outer side of the central reinforcing member 10.
When the sub-cables 20 are plural, the plural sub-cables 20 are twisted outside the central strength member 10, that is, the plural sub-cables 20 are wound outside the central strength member 10, and for example, four sub-cables 20 are twisted outside the central strength member 10 as shown in fig. 1.
As shown in fig. 1, in an implementation manner that the plurality of sub cables 20 are provided, the outer side of the central reinforcement 10 may be wrapped by the plastic sheathing layer 101, the plastic sheathing layer 101 may be low-smoke halogen-free flame-retardant polyolefin, and when the outer diameter of the central reinforcement 10 is small, the plastic sheathing layer 101 may increase the outer diameter of the whole body formed by the central reinforcement 10 and the plastic sheathing layer 101, so that the plurality of sub cables 20 may be stranded outside the whole body formed by the central reinforcement 10 and the plastic sheathing layer 101. In addition, the plastic coating layer 101 can increase the tensile strength of the sub-cable 20,
in the implementation mode that the sub-cables 20 are multiple, the gaps between the sub-cables 20 can be filled with the water blocking yarns 250, and the water blocking yarns 250 further improve the waterproof effect of the waterproof tail cable.
As shown in fig. 1, in some embodiments, the waterproof trailing cable may further include a longitudinal covering material layer 30, a longitudinal covering armor layer 40, and an outer sheath 50, the longitudinal covering material layer 30 is wrapped outside the sub-cable 20, the longitudinal covering material layer 30 may include aramid fiber and water-blocking yarn, the aramid fiber may improve the tensile property of the waterproof trailing cable, and the water-blocking yarn is used for blocking water to prevent moisture from entering the sub-cable 20.
The longitudinal cladding armor layer 40 wraps the outer portion of the longitudinal cladding material layer 30, the longitudinal cladding armor layer 40 can be formed by surrounding plastic-coated aluminum strips, and the thickness of the plastic-coated aluminum strips can be 0.3 mm. As shown in fig. 3, the plastic-coated aluminum strip may include a first connection aluminum strip 401, an intermediate aluminum strip 402 and a second connection aluminum strip 403 which are sequentially arranged along the circumferential direction of the sub-cable 20, the first connection aluminum strip 401, the intermediate aluminum strip 402 and the second connection aluminum strip 403 are integrally formed, and the first connection aluminum strip 401 is overlapped outside the second connection aluminum strip 403 to improve the overall tensile and compressive capacity of the waterproof trailing cable.
Further, the length of the overlapping portion of the first connecting aluminum strip 401 and the second connecting aluminum strip 403 along the circumferential direction of the sub-cable 20 may be 2mm to 4mm, so that the first connecting aluminum strip 401 and the second connecting aluminum strip 403 are connected more firmly, and the first connecting aluminum strip 401 and the second connecting aluminum strip 403 are not easily separated.
The outer sheath 50 can be made of polyethylene materials, the thickness of the outer sheath 50 can be 0.9 mm-1.1 mm, the outer diameter of the outer sheath 50 can be 11.4 mm-11.8 mm, and the outer sheath 50 protects the waterproof tail cable, so that the waterproof tail cable can be suitable for outdoor various environments.
The waterproof tail cable in this embodiment, including central reinforcement 10 and sub-cable 20, sub-cable 20 is around establishing the outside at central reinforcement 10, and sub-cable 20 includes optic fibre 210, loose tube 220 and the spiral armor 230 that sets gradually from inside to outside, and spiral armor 230 includes stainless steel wire or bonderized steel wire, and stainless steel wire or bonderized steel wire spiral are around establishing outside loose tube 220. Through the above arrangement, the spiral armor layer 230 can improve the compression resistance and the impact resistance of the sub-cable 20, so that the exposed sub-cable 20 is not easily damaged by mechanical impact, thereby ensuring that the waterproof tail cable can perform normal signal transmission.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.
Claims (7)
1. A waterproof tail cable, comprising: the optical fiber cable comprises a central reinforcing part and sub cables, wherein the sub cables are wound on the outer side of the central reinforcing part and comprise optical fibers, a loose tube and a spiral armor layer which are sequentially arranged from inside to outside, the spiral armor layer comprises stainless steel wires or phosphatized steel wires, the cross sections of the stainless steel wires or the phosphatized steel wires are flat, and the stainless steel wires or the phosphatized steel wires are wound outside the loose tube in a spiral manner;
the sub-cable further comprises an inner protection layer, and the inner protection layer is arranged on the outer side of the spiral armor layer;
the waterproof tail cable further comprises a longitudinally-wrapped armor layer and an outer sheath, the longitudinally-wrapped armor layer is arranged outside the sub-cable, the outer sheath is arranged outside the longitudinally-wrapped armor layer, and the longitudinally-wrapped armor layer is formed by surrounding a plastic-coated aluminum belt; the plastic-coated aluminum strip comprises a first connecting aluminum strip, a middle aluminum strip and a second connecting aluminum strip which are sequentially arranged along the circumferential direction of the sub-cable, and the first connecting aluminum strip is connected with the outer side of the second connecting aluminum strip in a lap joint mode.
2. The water resistant pigtail cable of claim 1 wherein the sub-cable further comprises a first water resistant layer disposed between the optical fiber and the loose tube.
3. The water resistant pigtail cable of claim 2, wherein the sub-cable further comprises a tight-buffered layer disposed between the optical fiber and the first water resistant layer.
4. The water resistant tail-cord of claim 1, wherein the sub-cord further comprises a second water resistant layer disposed between the spiral armor layer and the inner jacket.
5. The waterproof pigtail cable of claim 4 wherein the sub-cable further comprises an aramid layer disposed between the spiral armor layer and the second water resistant layer.
6. The water resistant tail cable of any one of claims 1 to 5, wherein the sub cable is one, and the sub cable is helically wound outside the central reinforcing member; alternatively, the sub-cable may be a plurality of sub-cables stranded on an outer side of the central reinforcing member.
7. The waterproof tail cable according to claim 1, wherein the length of the overlapping portion of the first connecting aluminum strip and the second connecting aluminum strip in the circumferential direction of the sub cable is 2-4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221976811.1U CN217360410U (en) | 2022-07-29 | 2022-07-29 | Waterproof tail cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221976811.1U CN217360410U (en) | 2022-07-29 | 2022-07-29 | Waterproof tail cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217360410U true CN217360410U (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221976811.1U Active CN217360410U (en) | 2022-07-29 | 2022-07-29 | Waterproof tail cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217360410U (en) |
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2022
- 2022-07-29 CN CN202221976811.1U patent/CN217360410U/en active Active
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