Bending-resistant and compression-resistant flexible soft optical cable, tail fiber and jumper wire for indoor optical wiring

Abstract

The utility model discloses an anti-bending and anti-compression flexible soft optical cable for indoor optical wiring, a tail fiber and a jumper wire, the anti-bending and anti-compression flexible soft optical cable for indoor optical wiring comprises an optical fiber, two reinforcing members and a high-elasticity soft sheath, the two reinforcing members are symmetrically arranged at the left side and the right side of the optical fiber, the surface of the optical fiber is provided with a coating layer, and the high-elasticity soft sheath is arranged on the tail fiber. The high-elasticity soft sheath is coated on the optical fiber and the reinforcer, and the reinforcer is composed of a plurality of soft metal wires. According to the utility model, the bending radius is small, the tensile resistance, the flattening resistance and the bending resistance are stronger, the optical fibers are protected from being damaged when the optical cable is extruded, the additional attenuation is not increased, and the optical cable is suitable for being used in spaces with different sizes.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of indoor light wiring is bent and is pressed flexible soft optical cable, tail fiber and jumper, belong to optical communication technical field. BACKGROUND

[0002] With the development of optical fiber communication, optical fiber resources are used in every corner of society, but the existing optical fiber wiring cable is mainly butterfly cable and circular indoor soft optical cable, the existing soft optical cable includes optical fiber, reinforcing member and sheath, the reinforcing member in which is usually made of single steel wire, glass fiber and spunlaid into bar-shaped three forms, the glass fiber is brittle, and it is easy to break when bending, while the reinforcing member made of spunlaid has good tensile resistance, but its cost is high, so the current optical fiber generally uses single steel wire as reinforcing member, the diameter of single steel wire is relatively large, and its bending radius is large, which is not suitable for use in narrow space. Butterfly cable has flat structure, and has very good tensile resistance and compression resistance, but it is very hard and has poor bending resistance, and in the case of small bending angle or large bending angle, fiber breakage or joint attenuation may occur, although the internal optical fiber uses G.657A bend-insensitive optical fiber to offset, but due to its flat structure, the cable may be twisted when wiring, and fiber breakage may occur when twisted to a certain extent. Circular indoor soft optical cable has good flexibility and strong tensile resistance, but has poor compression resistance and bending resistance, and is only suitable for use in ODF frame or special fiber passing channel with bending radius greater than or equal to 30mm in cabinet, if used for temporary wiring, jumper or fiber adapter in cabinet, fiber breakage may occur due to limited space, which affects wiring, and is not suitable for use in narrow space and high-density wiring scene. SUMMARY

[0003] The utility model aims at providing a kind of indoor light wiring is bent and is pressed flexible soft optical cable, solve the technical defects that the bending radius of optical cable is large in prior art, which uses single steel wire with large diameter as reinforcing member.

[0004] To solve the above problems, the utility model adopts the technical field of indoor light wiring is bent and is pressed flexible soft optical cable, which includes optical fiber, two reinforcing members and high-elasticity soft sheath, the two reinforcing members are symmetrically arranged on the left and right sides of the optical fiber, the optical fiber surface is provided with a coating layer, the high-elasticity soft sheath covers the optical fiber and the reinforcing member, and the reinforcing member is composed of multiple soft metal wires. Compared with the single steel wire with large diameter used in the prior art, the reinforcing member composed of multiple soft metal wires has a smaller bending radius, making the utility model suitable for use in smaller space.

[0005] As a further improvement of the utility model, the left and right sides of the high-elasticity soft sheath are arc-shaped, and two V-shaped or trapezoidal grooves are symmetrically arranged on the upper and lower sides of the high-elasticity soft sheath, the bottom of the groove and the top of the groove are both arc-shaped and are in arc transition with the arc-shaped portions on the left and right sides of the high-elasticity soft sheath. The utility model sets symmetric grooves on the high-elasticity soft sheath, which saves materials and reduces economic cost on the one hand, and on the other hand, the outer surface of the high-elasticity soft sheath is in overall arc transition, so that stress concentration is reduced, and when the high-elasticity soft sheath is subjected to torsional force, bending force and flattening force, it has corresponding transition space expansion and contraction, thereby protecting the optical fiber.

[0006] As a further improvement of the utility model, the soft metal wire made into the reinforcing member is one of a steel wire, an aluminum wire, an iron wire and a copper wire. The soft metal wire is made of the aforementioned material, thereby ensuring the tensile resistance and flexibility of the optical cable, supporting the outer sheath of the optical cable and protecting the optical fiber together with the outer sheath of the optical cable.

[0007] As a further improvement of the utility model, the high-elasticity soft sheath is made of polyvinyl chloride elastomer, polyethylene elastomer, polyolefin elastomer, thermoplastic elastomer, thermoplastic polyester elastomer, thermoplastic polyurethane elastomer, polyurethane elastomer, silicone or polycaprolactam or poly(hexamethylene adipate). The optical cable has improved flexibility, tensile resistance, flattening resistance and bending resistance when subjected to tensile force, and the optical fiber is protected from kinking when the optical cable is twisted.

[0008] As a further improvement of the utility model, the optical fiber is a bend-insensitive optical fiber, a common optical fiber, a single-mode optical fiber or a multi-mode optical fiber, the number of the optical fibers is one or more, and the multiple optical fibers are distributed in a strip shape or a bundle shape between the two reinforcing members. The utility model sets multiple optical fibers, which can transmit more data and signals, wherein the optical fibers distributed in the strip shape have high density and can adopt smaller connectors or multi-core connectors, are suitable for direct fusion transmission of optical signals, can be made into multi-core connectors and are connected through a coupler, the optical fibers distributed in the bundle shape occupy a smaller volume, the optical fibers are arranged side by side at a joint and are suitable for branching, are used for different ports according to user scenarios, can be fused according to the direction of the optical fiber routing, and are suitable for different line sequence requirements.

[0009] As a further improvement of the utility model, the high-elasticity soft sheath adopts a loose cover or a semi-loose cover or a tight package or a semi-tight package structure.

[0010] Another object of the utility model is to provide a pigtail, which comprises the indoor optical wiring anti-bending and anti-pressing flexible soft optical cable and the single-core optical fiber connector or the multi-core optical fiber connector, and the single-core optical fiber connector or the multi-core optical fiber connector is arranged at one end of the indoor optical wiring anti-bending and anti-pressing flexible soft optical cable. The utility model is fused or jumpered in the corresponding ODF and distribution frame, or is not damaged due to extrusion, bending and kinking in the condition of limited space in emergency wiring.

[0011] The third object of the present application is to provide a jumper wire, comprising a bending and pressure resistant flexible soft optical cable for indoor optical wiring and a single-core optical fiber connector or a multi-core optical fiber connector, and the bending and pressure resistant flexible soft optical cable for indoor optical wiring is provided with the single-core optical fiber connector or the multi-core optical fiber connector at both ends.

[0012] In summary, the present application has the advantages of small bending radius, strong tensile force, compression flatness and bending resistance, protection of optical fibers from damage when the optical cable is squeezed, no additional loss, and application in different sizes of spaces. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic diagram of example 1.

[0014] Figure 2 is a structural schematic diagram of example 2 using double cores.

[0015] Figure 3 is a structural schematic diagram of example 2 using four cores.

[0016] Figure 4 is a structural schematic diagram of example 3 using four cores.

[0017] Figure 5 is a structural schematic diagram of example 3 using seven cores.

[0018] Figure 6 is a three-dimensional structural schematic diagram of example 5.

[0019] Figure 7 is a three-dimensional structural schematic diagram of example 6.

[0020] Figure 8 is a three-dimensional structural schematic diagram of example 7.

[0021] Figure 9 is a three-dimensional structural schematic diagram of example 8.

[0022] Figure 10 is an effect diagram of example 8 folded in half.

[0023] Figure 11 is a three-dimensional structural schematic diagram of example 9.

[0024] Figure 12 is an effect diagram of example 9 folded in half.

[0025] Figure 13 is a three-dimensional structural schematic diagram of example 10.

[0026] The components include: 1. Optical fiber; 2. Reinforcing member; 3. High-elasticity soft sheath; 31. Arc part; 4. Groove; 41. Rounded corner; 42. Side wall; 43. Connecting part; 5. Single-core optical fiber connector; 6. Multi-core optical fiber connector; 7. Light-emitting device. Detailed Implementation

[0027] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Example 1

[0028] like Figure 1 The illustrated flexible optical cable for indoor optical cabling, resistant to bending and compression, includes one optical fiber 1, two reinforcing members 2, and a highly elastic flexible sheath 3. The optical fiber 1 is a bend-insensitive fiber or a common fiber, single-mode fiber or multimode fiber. The two reinforcing members 2 are symmetrically arranged on the left and right sides of the optical fiber 1. The optical fiber 1 is a bend-insensitive G.657A or B3 fiber with an added acrylic resin coating. The highly elastic flexible sheath 3 covers the optical fiber 1 and the reinforcing members 2. The optical fiber 1 is located at the center of the entire flexible optical cable, and the optical fiber 1 is parallel to the two reinforcing members 2. The centerline of the optical fiber 1 and the centerline of the reinforcing member 2 are aligned. In this embodiment, the reinforcing member 2 is composed of multiple parallel flexible metal wires. Specifically, it consists of seven flexible metal wires, with one wire located at the center and the other six evenly distributed around and tangentially contacting the central wire. The flexible metal wires used to make the reinforcing member 2 are selected from steel, aluminum, iron, and copper wires to ensure the tensile strength and flexibility of the optical cable, supporting the outer sheath and protecting the optical fiber together. In this embodiment, steel wire is the optimal choice for the reinforcing member 2. This embodiment can be installed in conventional ODF frames, fiber optic distribution frames for structured cabling, and in scenarios requiring high-density cabling. It will not damage the optical fiber during splicing or patching within the corresponding ODF or distribution frame, or during emergency cabling.

[0029] In this embodiment, the left and right sides of the high-elasticity soft sheath 3 are both arc-shaped, which are marked as arc portions 31 in this embodiment. The upper and lower sides of the high-elasticity soft sheath 3 are symmetrically recessed towards the direction of the optical fiber 1 to form two V-shaped or trapezoidal grooves 4. In this embodiment, the grooves 4 are preferably V-shaped structures. The bottom of the grooves 4 is rounded corner 41. The two side walls 42 of the grooves 4 are arc-shaped transitions with the arc portions 31 on the left and right sides of the high-elasticity soft sheath 3 to form connecting portions 43. The high-elasticity soft sheath 3 in this embodiment improves the flexibility, tensile strength, flattening resistance, and bending resistance of the optical cable, and protects the optical fiber from twisting when the optical cable is twisted.

[0030] The high-elasticity soft sheath 3 in the embodiment is made of polyvinyl chloride elastomer, polyethylene elastomer, polyolefin elastomer, thermoplastic elastomer TPE, thermoplastic polyester elastomer TPEE, thermoplastic polyurethane elastomer TPU, polyurethane elastomer PUR, silicone, polyhexamethylene adipamide PA6, or polyhexamethylene adipamide PA66, to ensure the flexibility of bending. Embodiment 2

[0031] The embodiment is a further improvement based on embodiment 1. Compared with embodiment 1, the number of optical fibers 1 in the embodiment is multiple, the multiple optical fibers 1 are distributed in a strip shape between the two reinforcing members 2, the multiple optical fibers 1 are arranged in parallel, and the center lines of the multiple optical fibers 1 are located on the same plane, and the two adjacent optical fibers 1 on the left and right are in close contact, wherein Figure 2 the optical fibers 1 shown in the left part are two, Figure 3 the optical fibers shown in the right part are four. The rest of the structure in the embodiment is the same as that in embodiment 1, and details can be referred to embodiment 1, which will not be described herein. Embodiment 3

[0032] The embodiment is a further improvement based on embodiment 1. Compared with embodiment 1, the number of optical fibers 1 in the embodiment is multiple, the multiple optical fibers 1 are distributed in a bundle shape between the two reinforcing members 2, Figure 4 the optical fibers 1 shown in the left part are four, which are distributed at the four vertices of a square, Figure 5 the optical fibers shown in the right part are seven, one of which is located at the center, and the other six are uniformly distributed around the one at the center and in close contact with the one at the center. The rest of the structure in the embodiment is the same as that in embodiment 1, and details can be referred to embodiment 1, which will not be described herein. Embodiment 4

[0033] The embodiment is a further improvement based on embodiment 1 or embodiment 2 or embodiment 3. Compared with the foregoing embodiments, the high-elasticity soft sheath 3 in the embodiment adopts a loose cover or a semi-loose cover or a tight package or a semi-tight package structure, specifically, the difference in the tightness of the cooperation between the high-elasticity soft sheath 3 and the optical fibers 1. The rest of the structure in the embodiment is the same as that in embodiment 1 or embodiment 2 or embodiment 3, and details can be referred to embodiment 1 or embodiment 2 or embodiment 3, which will not be described herein. Embodiment 5

[0034] The technical solution of the embodiment is a pigtail, like Figure 6As shown, it includes a fiber connector and the indoor optical wiring anti-bending and anti-pressure flexible soft optical cable of embodiment 1, the fiber connector is arranged at one end of the indoor optical wiring anti-bending and anti-pressure flexible soft optical cable, the fiber connector is a single-core fiber connector 5, the fiber connector in this embodiment is suitable for SC, LC, FC, ST, MU and other fiber connectors of standard connectors, this embodiment is fused or jumpered in the corresponding ODF, distribution frame, or in the limited space conditions in emergency wiring, the fiber will not be damaged due to extrusion, bending and kinking. Embodiment 6

[0035] The technical solution of this embodiment is a tail fiber, as shown in Figure 7 As shown, it includes a fiber connector and the indoor optical wiring anti-bending and anti-pressure flexible soft optical cable of embodiment 2 or embodiment 3, the fiber connector is arranged at one end of the indoor optical wiring anti-bending and anti-pressure flexible soft optical cable, the fiber connector is a single-core fiber connector 5, the fiber connector in this embodiment is suitable for SC, LC, FC, ST, MU and other fiber connectors of standard connectors, this embodiment is fused or jumpered in the corresponding ODF, distribution frame, or in the limited space conditions in emergency wiring, the fiber will not be damaged due to extrusion, bending and kinking. Embodiment 7

[0036] The technical solution of this embodiment is a jumper, as shown in Figure 9 and Figure 10 As shown, it includes a fiber connector and the indoor optical wiring anti-bending and anti-pressure flexible soft optical cable of embodiment 1, the fiber connector is arranged at one end of the indoor optical wiring anti-bending and anti-pressure flexible soft optical cable, the fiber connector is a single-core fiber connector 5, the fiber connector in this embodiment is suitable for SC, LC, FC, ST, MU and other fiber connectors of standard connectors, this embodiment is fused or jumpered in the corresponding ODF, distribution frame, or in the limited space conditions in emergency wiring, the fiber will not be damaged due to extrusion, bending and kinking. Embodiment 8

[0037] The technical solution of this embodiment is a jumper, as shown in Figure 11 and Figure 12 As shown, it includes a fiber connector and the indoor optical wiring anti-bending and anti-pressure flexible soft optical cable of embodiment 2 or embodiment 3, the fiber connector is arranged at one end of the indoor optical wiring anti-bending and anti-pressure flexible soft optical cable, the fiber connector is a single-core fiber connector 5, the fiber connector is a multi-core fiber connector 6, the fiber connector in this embodiment is suitable for LC double-core, LC four-core, MT-RJ, MPO, MTP fiber connectors of standard connectors, this embodiment is fused or jumpered in the corresponding ODF, distribution frame, or in the limited space conditions in emergency wiring, the fiber will not be damaged due to extrusion, bending and kinking.

[0038] The parts not particularly mentioned in the above description are all prior art or can be realized by prior art. Moreover, the specific implementation cases described in the utility model are only the preferred implementation cases of the utility model, and are not used to limit the implementation range of the utility model. That is, equivalent changes and modifications made according to the content of the utility model patent range should be regarded as the technical scope of the utility model.

Claims

1. A flexible, soft optical cable for indoor light wiring, characterized by: The flexible soft optical cable comprises an optical fiber, two reinforcing members and a high-elasticity soft sheath, the two reinforcing members are symmetrically arranged on the left and right sides of the optical fiber, the surface of the optical fiber is provided with a coating layer, and the high-elasticity soft sheath is wrapped on the optical fiber and the reinforcing members.

2. The crush and kink resistant flexible soft optical cable for indoor optical wiring according to claim 1, characterized in that: The left and right sides of the high-elasticity soft sheath are in the shape of a circular arc, and the upper and lower sides of the high-elasticity soft sheath are symmetrically provided with two V-shaped or trapezoidal grooves, the bottom of the groove and the top of the groove are both in the shape of a circular arc and are connected to the circular arc-shaped parts on the left and right sides of the high-elasticity soft sheath.

3. The crush and kink resistant flexible soft optical cable for indoor optical wiring according to claim 1, characterized in that: The soft metal wire used to make the reinforcing member is one of a steel wire, an aluminum wire, an iron wire and a copper wire.

4. The crush and kink resistant, flexible, soft optical cable for use in indoor lighting wiring according to claim 1, characterized in that: The high-elasticity soft sheath is made of polyvinyl chloride elastomer, polyethylene elastomer, polyolefin elastomer, thermoplastic elastomer, thermoplastic polyester elastomer, thermoplastic polyurethane elastomer, polyurethane elastomer, silicone, polycaprolactam or poly(hexamethylene adipamide).

5. The crush and kink resistant, flexible, soft optical cable for use in indoor lighting wiring according to claim 1, characterized in that: The optical fiber is a bend-insensitive optical fiber, a common optical fiber, a single-mode optical fiber or a multi-mode optical fiber, the number of the optical fiber is one or more, and the multiple optical fibers are distributed in the form of a band or a bundle between the two reinforcing members.

6. The crush and kink resistant, flexible, soft optical cable for use in indoor lighting wiring according to claim 1, characterized in that: The high-elasticity soft sheath adopts a loose cover, a semi-loose cover, a tight package or a semi-tight package structure.

7. A pigtail characterized by: The indoor optical wiring anti-bending and anti-pressure flexible soft optical cable comprises the indoor optical wiring anti-bending and anti-pressure flexible soft optical cable and a single-core optical fiber connector or a multi-core optical fiber connector, and the single-core optical fiber connector or the multi-core optical fiber connector is arranged at one end of the indoor optical wiring anti-bending and anti-pressure flexible soft optical cable.

8. A jumper, characterized by: The indoor optical wiring anti-bending and anti-pressure flexible soft optical cable comprises the indoor optical wiring anti-bending and anti-pressure flexible soft optical cable and a single-core optical fiber connector or a multi-core optical fiber connector, and the single-core optical fiber connector or the multi-core optical fiber connector is arranged at one end of the indoor optical wiring anti-bending and anti-pressure flexible soft optical cable.

Images