CN210864135U

CN210864135U - Side pressure resistant outdoor overhead and indoor wiring optical cable

Info

Publication number: CN210864135U
Application number: CN201922099164.5U
Authority: CN
Inventors: 王爱国
Original assignee: Shenzhen Sdgi Photoelectricity Technologies Co ltd
Current assignee: Shenzhen Sdgi Photoelectricity Technologies Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-06-26
Anticipated expiration: 2029-11-28

Abstract

The utility model provides an outdoor built on stilts of anti side pressure and indoor wiring optical cable, including non-metal center reinforcement, optic fibre and oversheath, the lateral surface of non-metal center reinforcement is equipped with the helicla flute, optic fibre sets up inside the helicla flute, the oversheath parcel is in outside non-metal center reinforcement, optic fibre. The utility model has the advantages that: the outer diameter is small, the consumed materials are less, and the cost is low; the lateral pressure resistance is good; the environmental resistance is good; has long optical fiber length and good tensile property.

Description

Side pressure resistant outdoor overhead and indoor wiring optical cable

Technical Field

The utility model relates to an optical cable especially relates to an outdoor aerial and indoor wiring optical cable of anti side pressure.

Background

The existing optical cable structure (non-backbone/trunk network) mainly comprises two types of loose-sleeve layer stranded structures and loose-sleeve central tube structures. The number of optical fiber cores is relatively large. If the number of the cores of the optical cable is to be small, some elements in the core of the optical cable are not necessary, such as the central strength member, the filler cord, the armor layer (if any), the sheath and the optical fiber loose tube of the loose tube type optical cable, the optical fiber loose tube of the loose tube type central tube type structure, the double strength member, the sheath, and the like. Especially, the optical cable structure is naturally enlarged much because the optical fiber loose tube is thick.

For the FTTx structure, several types of optical cables or cables are generally used, such as tight-buffered optical cables or cables, and the main structure thereof has three types: one is that the tight-buffered optical fiber is embedded into the reinforcement such as aramid yarn, and the reinforcement is coated with a layer of outer sheath; one is that the tight-buffered optical fiber is twisted and wound on a KFRP or FPR and other central reinforcing members and is arranged in an aramid yarn reinforcing layer, and a layer of outer sheath is coated outside the aramid yarn reinforcing layer; one is that the optical fiber is arranged in the center of the butterfly structure, the two sides of the butterfly structure are central reinforcing parts, and the optical fiber and the central reinforcing parts are both coated by an outer sheath. The three tight-sleeved optical cables have no extra cable length, the optical cables expand with heat and contract with cold when being subjected to external environment changes, and the contraction or stretching force generated by other materials is directly transmitted to the internal optical fibers, so that the transmission performance and the service life of the optical fibers are influenced.

The existing loose tube structure optical cable has the following defects: the outer diameter is large, the consumed materials are more, and the cost is high; the lateral pressure resistance is not good.

The existing tight-jacketed structured optical cable has the following defects: poor environmental resistance; the lateral pressure resistance is poor; no extra length of optical fiber and poor tensile property.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides an anti side pressure outdoor built on stilts and indoor wiring optical cable.

The utility model provides an outdoor built on stilts of anti side pressure and indoor wiring optical cable, including non-metal center reinforcement, optic fibre and oversheath, the lateral surface of non-metal center reinforcement is equipped with the helicla flute, optic fibre sets up inside the helicla flute, the oversheath parcel is in outside non-metal center reinforcement, optic fibre.

As a further improvement of the utility model, the nonmetal central reinforcement is a glass fiber framework.

As a further improvement, a heat insulation layer is arranged between the nonmetal central reinforcement and the outer sheath.

As a further improvement, the non-metal central reinforcement is a solid cylindrical framework.

As a further improvement of the present invention, the optical fiber is located within the circumference of the non-metal center reinforcement.

As a further improvement of the utility model, the oversheath is PE oversheath or PVC oversheath or PU oversheath.

As a further improvement of the present invention, the optical fiber is provided with a gap between the spiral groove for the movement of the optical fiber.

As a further improvement of the present invention, the spiral groove is formed along a radial cross section of the non-metal center reinforcement member.

The utility model has the advantages that: the outer diameter is small, the consumed materials are less, and the cost is low; the lateral pressure resistance is good; the environmental resistance is good; has long optical fiber length and good tensile property.

Drawings

Fig. 1 is the utility model discloses an anti side pressure outdoor built on stilts and indoor wiring optical cable's schematic diagram.

Detailed Description

The present invention will be further described with reference to the following description and embodiments.

As shown in fig. 1, the side pressure resistant outdoor aerial and indoor wiring optical cable comprises a non-metal central reinforcement 1, an optical fiber 2 and an outer sheath 4, wherein a spiral groove 11 is formed in the outer side surface of the non-metal central reinforcement 1, the optical fiber 2 is arranged in the spiral groove 11, and the outer sheath 4 is wrapped outside the non-metal central reinforcement 1 and the optical fiber 2.

As shown in fig. 1, the non-metal central reinforcing member 1 is a glass fiber framework, and the expansion with heat and contraction with cold of the glass fiber is very close to that of the optical fiber 2, so that the non-metal central reinforcing member has very good environmental resistance.

As shown in fig. 1, a thermal insulation layer 3 is disposed between the non-metal central strength member 1 and the outer sheath 4, so as to ensure the stability of the process during the manufacturing of the optical cable and prevent the outer sheath 4 from being adhered to the optical fiber 2.

As shown in fig. 1, the non-metallic central reinforcement 1 is a cylindrical solid skeleton.

As shown in fig. 1, the optical fiber 2 is located within the circumference of the non-metallic central strength member 1.

As shown in fig. 1, the outer sheath 4 is a PE outer sheath or a PVC outer sheath or a PU outer sheath.

As shown in fig. 1, a gap for moving the optical fiber 2 is provided between the optical fiber 2 and the spiral groove 11, the optical fiber 2 is in a free state in the spiral groove 11, and the optical fiber may have an extra length (determined by a space of the groove).

As shown in fig. 1, the spiral groove 11 is circular arc-shaped along the radial section of the non-metallic central reinforcement 1.

As shown in FIG. 1, the spiral groove 11 may be made into a left-handed or right-handed spiral structure according to actual requirements, and the number of the spiral grooves 11 may be single or multiple.

As shown in figure 1, the optical fiber 2 is placed in the spiral groove 11 of the nonmetal central reinforcer 1 with high hardness and strength, the lateral pressure of the optical cable is completely born by the framework material and the PE outer protective layer, and the optical fiber 2 is not affected by the lateral pressure basically.

As shown in fig. 1, when the optical cable is stretched and bent, the optical fiber 2 is stretched and bent along with the non-metallic central strength member 1, and the non-metallic central strength member 1 has good rigidity and strength, and the optical fiber 2 inside the non-metallic central strength member is not stressed to bend or stretch under normal conditions.

The utility model provides a pair of outdoor built on stilts of anti side pressure and indoor wiring optical cable, characteristics are directly to open helicla flute 11 on nonmetal central reinforcement 1 for place optic fibre 2, then extrude oversheath 4 on it, bare fiber directly places in the helicla flute 11 of the solid skeleton that non-metallic material such as glass fiber made, like direct fluting on the FRP. The optical fiber 2, the glass fiber and other nonmetal frameworks are wrapped in the heat insulation layer 3, the outer layer of the optical fiber 2 and the glass fiber and other nonmetal frameworks is further wrapped with a layer of PE, PVC, PU or other materials to form an outer sheath 4 of the optical cable, and the optical cable which can be used for indoor and outdoor overhead, home entry and indoor wiring is formed, and has the advantages of very simple structure, simple manufacturing process, low cost and more convenient later installation and wiring; the structure supports the development of a nonmetal solid spiral skeleton groove structure with a tiny size, so that a single-core or multi-core optical cable with a tiny size is developed, and the size is about 3-5 mm. The PE outer sheath mainly plays a role in protection.

The utility model provides a pair of outdoor built on stilts of anti side pressure and indoor wiring optical cable has following advantage:

1. the optical cable has the advantages of simple structure, low cost and good protection to the optical fiber;

2. the material has good resistance to environmental performance influences such as high and low temperature changes;

3. the material has good lateral pressure resistance and tensile resistance;

4. the middle non-metal central reinforcement 1 can be formed in one step by using a special die, the manufacturing process is simple, and the manufacturing cost can be greatly reduced on the premise of ensuring the signal transmission efficiency.

5. And the wiring construction is simple. The connecting hardware fitting can be used in various conventional manners, and has the advantages of various and simple fixing manners and low installation cost.

The utility model provides a pair of anti side pressure outdoor built on stilts and indoor wiring optical cable uses glass fiber, PE material etc. has characteristics such as light, no oleamen, cross sectional dimension is little, light in weight, anti side pressure, temperature performance are good, still has characteristics such as manufacturing process is simple, the material quantity is few, with low costs. The optical cable can be used for manufacturing single-core and even multi-core optical cables according to actual conditions so as to meet the requirements of increasingly developed network construction. The optical cable is mainly used for home-entry optical cables and short-distance overhead optical cables with small core number, and can also be used for indoor optical fiber wiring, communication equipment in buildings, interconnection between an exchanger and equipment of end users and the like.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides an anti side pressure outdoor built on stilts and indoor wiring optical cable which characterized in that: the optical fiber cable comprises a non-metal central reinforcing part, an optical fiber and an outer sheath, wherein a spiral groove is formed in the outer side surface of the non-metal central reinforcing part, the optical fiber is arranged in the spiral groove, and the outer sheath is wrapped outside the non-metal central reinforcing part and the optical fiber.

2. The lateral pressure resistant outdoor aerial and indoor wiring optical cable of claim 1, wherein: the non-metal central reinforcing part is a glass fiber framework.

3. The lateral pressure resistant outdoor aerial and indoor wiring optical cable of claim 1, wherein: and a heat insulation layer is arranged between the nonmetal central reinforcing part and the outer sheath.

4. The lateral pressure resistant outdoor aerial and indoor wiring optical cable of claim 1, wherein: the non-metal central reinforcement is a cylindrical solid framework.

5. The lateral pressure resistant outdoor aerial and indoor wiring optical cable of claim 4, wherein: the optical fiber is located within a circumference of the non-metallic central strength member.

6. The lateral pressure resistant outdoor aerial and indoor wiring optical cable of claim 1, wherein: the outer sheath is a PE outer sheath or a PVC outer sheath or a PU outer sheath.

7. The lateral pressure resistant outdoor aerial and indoor wiring optical cable of claim 1, wherein: and a gap for the optical fiber to move is arranged between the optical fiber and the spiral groove.

8. The lateral pressure resistant outdoor aerial and indoor wiring optical cable of claim 1, wherein: the spiral groove is arc-shaped along the radial section of the non-metal central reinforcement.