CN210427903U - Recessive butterfly-shaped optical cable - Google Patents

Abstract

The utility model relates to a recessive butterfly-shaped optical cable, it includes stealthy micro cable, enhancement line and oversheath. The invisible micro cable and the reinforcing wire are arranged in parallel and penetrate through the outer sheath. The outer diameter of the invisible micro cable is controlled to be 450-950 μm. The invisible micro cable is composed of non-colored optical fibers, a transparent tight-fitting layer and a transparent heat-activated adhesive layer which are concentrically arranged from inside to outside along the radial direction of the invisible micro cable. Therefore, the wiring process of the invisible micro cable is not easily affected by indoor corners, the wiring regularity is guaranteed, and the overall harmony of the wall surface is guaranteed. In addition, the butterfly-shaped optical cable is about to be stripped out after entering home, the transparent heat activated adhesive layer on the butterfly-shaped optical cable can be reliably fixed with the wall surface by heating, the construction process is simplified, and the damage to the wall surface caused by construction is avoided.

Description

Recessive butterfly-shaped optical cable

Technical Field

The utility model relates to a communication optical cable makes technical field, especially relates to a recessive butterfly-shaped optical cable.

Background

With the rapid development of optical fiber communication, optical cables are used increasingly frequently. In order to meet the requirement of increasing broadband network speed of users, the demand of Fiber To The Home (FTTH) and Fiber To The Building (FTTB) is increasing. In the prior art, the open-line laying mode is mainly adopted, namely, the butterfly-shaped optical cable or the round optical cable is placed outside the building wall or attached to the surface of the building wall in a mode of arranging nails and clamps on the wall. Among them, the butterfly cables are most commonly used. As is known, the butterfly-shaped optical cable has a large outer diameter and bright color, so that the butterfly-shaped optical cable is greatly influenced by indoor corners during wiring, wiring is irregular, the overall coordination of the wall surface is damaged to a certain extent after construction is finished, and the indoor attractiveness is directly influenced. More seriously, the construction process also causes damage which is difficult to repair to the wall surface and indoor decoration, so that the acceptance of customers is not high. Thus, a skilled person is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a can not destroy indoor original overall arrangement and aesthetic property, and construct convenient stealthy butterfly-shaped optical cable.

In order to solve the technical problem, the utility model relates to a recessive butterfly-shaped optical cable, it includes stealthy micro cable, enhancement line and oversheath. The invisible micro cable and the reinforcing wire are arranged in parallel and penetrate through the outer sheath. The outer diameter of the invisible micro cable is controlled to be 450-950 μm. The invisible micro cable is composed of non-colored optical fibers, a transparent tight-fitting layer and a transparent heat-activated adhesive layer which are concentrically arranged from inside to outside along the radial direction of the invisible micro cable.

As the further improvement of the technical proposal of the utility model, the non-colored optical fiber is a single-mode bending-resistant optical fiber, and the minimum bending radius is controlled below 8 mm.

As a further improvement of the technical proposal of the utility model, the mode field diameter of the non-colored optical fiber is controlled at 9.2 +/-0.4 mu m @1550nm and is compatible with the G652 optical fiber.

As the further improvement of the technical proposal of the utility model, the transparent tight-buffered layer is any one of a TPU layer, a nylon layer or a silica gel layer, and the thickness of the transparent tight-buffered layer is controlled between 260 mu m and 280 mu m.

As a further improvement of the technical proposal of the utility model, the outer sheath is made of low-smoke halogen-free flame-retardant polyolefin material.

As the technical proposal of the utility model is further improved, the above strengthening wire is formed by twisting copper-plated steel wire, phosphatized steel wire, galvanized steel wire or aramid fiber.

As the technical proposal of the utility model is further improved, the reinforcing wire comprises a first reinforcing wire and a second reinforcing wire which are symmetrically arranged on the upper side and the lower side of the invisible micro cable.

As a further improvement of the technical proposal of the utility model, a V-shaped groove is arranged on the left and right sides of the outer sheath and just corresponding to the position of the invisible micro cable.

As a further improvement of the technical scheme of the utility model, above-mentioned stealthy butterfly-shaped optical cable is still including holding the acting as go-between, and it also wears to locate the inside of oversheath, and arranges with stealthy micro cable parallel.

As a further improvement of the technical proposal of the utility model, the pull wire is a glass fiber optical cable reinforced core.

Set up through adopting above-mentioned technical scheme, the stealthy micro-cable after shelling has less external diameter to make its bend radius littleer, and then it walks the influence that is difficult for receiving indoor turning, and then has guaranteed the regularity of wiring, ensures the whole harmony of wall. In addition, the butterfly-shaped optical cable is about to be stripped out after entering the home, and the transparent heat activated adhesive layer on the butterfly-shaped optical cable can be reliably fixed with the wall surface by heating, so that the use of a top clamp is avoided, the construction process is simplified, and the damage to the wall surface caused by construction is avoided.

Drawings

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only 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 schematic structural diagram of a first embodiment of the invisible butterfly-shaped optical cable of the present invention.

Fig. 2 is a schematic structural diagram of a second embodiment of the invisible butterfly-shaped optical cable of the present invention.

Fig. 3 is a schematic structural diagram of a third embodiment of the invisible butterfly-shaped optical cable of the present invention.

1-invisible micro cable; 11-a non-colored optical fiber; 12-a transparent tight-fitting layer; 13-a transparent heat activated adhesive layer; 2-a reinforcing wire; 21-a first reinforcing wire; 22-a second reinforcing wire; 3-an outer sheath; 31-V-shaped grooves; 4-a supporting line.

Detailed Description

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The contents of the present invention will be further described in detail with reference to the following specific embodiments, and fig. 1 shows a schematic structural diagram of a first embodiment of the invisible butterfly optical cable of the present invention, which mainly comprises an invisible micro cable 1, a reinforcing wire 2, an outer sheath 3, and so on. The invisible micro cable 1 and the reinforcing wire 2 are arranged in parallel and penetrate through the outer sheath 3. Generally, the outer diameter of the invisible micro-cable 1 is controlled to 450 μm to 950 μm. From the inside to the outside in the radial direction, the invisible micro-cable 1 is composed of a non-colored optical fiber 11, a transparent tight-buffered layer 12 and a transparent heat-activated adhesive layer 13, which are arranged concentrically with each other. Through adopting above-mentioned technical scheme to set up, the butterfly-shaped optical cable after peeling off possesses less bend radius relatively to it walks the difficult influence that receives indoor turning of line, and then has guaranteed the regularity of wiring, ensures the whole harmony of wall. In addition, the butterfly-shaped optical cable is about to be stripped out after entering the home, and the transparent heat activated adhesive layer 13 on the butterfly-shaped optical cable is heated to realize reliable fixation with the wall surface, so that the use of a top clamp is avoided, the construction process is simplified, and the damage to the wall surface caused by construction is avoided.

The butterfly-shaped optical cable formed by the technical scheme has excellent use performance, and the experimental parameters of the invisible butterfly-shaped optical cables of two types are shown in table 1, and are as follows:

TABLE 1

Here, the transparent tight-fitting layer 12 may be preferably any one of a TPU layer, a nylon layer, and a silicone layer according to the actual situation. The thickness of the transparent tight-buffered layer 12 is preferably controlled to 260 μm to 280 μm, in consideration of reducing the bending radius of the invisible micro-cable 1 as much as possible and ensuring the protection safety.

As a further optimization of the invisible butterfly optical cable, the non-colored optical fiber 11 is preferably a single-mode bending-resistant optical fiber, and the minimum bending radius thereof is controlled to be 8mm or less, so that the attenuation of signals transmitted in the optical cable is effectively reduced, and the transmission requirements in a complex environment such as a small bending radius can be met.

Furthermore, the mode field diameter of the non-colored optical fiber 11 is also controlled to be 9.2 ± 0.4 μm @1550nm and compatible with the G652 fiber, from the viewpoint of ensuring the stability and reliability of signal transmission, as shown in table 2:

TABLE 2

As known, the low-smoke halogen-free flame-retardant polyolefin material is composed of thermoplastic or thermosetting materials which have low smoke discharge amount when being heated and do not contain halogen, so that toxic and corrosive gases generated during combustion can be effectively reduced, and the use safety is ensured. In view of this, the outer sheath 3 is preferably made of a low smoke, halogen-free and flame retardant polyolefin material.

The reinforcing wire 2 is preferably formed by stranding copper-plated steel wires, phosphated steel wires, galvanized steel wires or aramid fiber wires with good corrosion resistance, so that the service life of the butterfly-shaped optical cable is effectively prolonged.

In addition, the reinforcing wires 2 are arranged into 2 pieces, and comprise the first reinforcing wires 21 and the second reinforcing wires 22 which are distributed and symmetrically arranged at the upper part and the lower part of the outer sheath 3, so that the invisible micro-cable 1 can be effectively prevented from being directly under the action of tensile force, and the phenomenon of tensile breaking in the wiring process can be prevented.

Fig. 2 shows a schematic structural diagram of a second embodiment of the invisible butterfly-shaped optical cable of the present invention, which is different from the first embodiment in that: v-shaped grooves 31 are arranged on the left side and the right side of the outer sheath 3 and correspond to the positions of the invisible micro cables. Thus, when the butterfly-shaped optical cable is arranged in a crowded pipeline, the V-shaped groove 31 can ensure that air is always circulated along the length direction of the butterfly-shaped optical cable, heat generated when the invisible micro-cable 1 works is timely dissipated, and the phenomenon of overburning is prevented. In addition, the V-shaped groove 31 can facilitate the maintenance personnel to tear the optical cable, which is beneficial to the subsequent maintenance work.

Fig. 3 shows a schematic structural diagram of a third embodiment of the invisible butterfly-shaped optical cable of the present invention, which is different from the second embodiment in that: the inner part of the outer sheath 3 is also provided with a supporting wire 4 in a penetrating way, so that the tensile capacity of the butterfly-shaped optical cable is greatly improved, the butterfly-shaped optical cable has self-supporting capacity, the hollow erection is convenient to realize, and the construction difficulty and the personnel investment are greatly reduced. For the preferred stress state and the convenience of manufacturing and molding, the tensile cord 4 is preferably arranged in parallel with the invisible micro-cable 1 and adjacently above the first reinforcing cord 21.

It is known that the glass fiber optical cable reinforced core has the characteristics of high tensile strength and light weight. In addition, in the actual use process, the glass fiber optical cable reinforced core is not easily interfered by induced current generated by a power supply line or a power supply device. In view of this, the tensile wire 4 is preferably a glass fiber cable reinforcing core. In addition, in the process that the optical cable is bitten by rats, the acicular glass fiber can hurt the oral cavity of the rats, so that the rats feel afraid of the optical cable, and the rat-proof effect is achieved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A hidden butterfly-shaped optical cable is characterized by comprising a hidden micro cable, a reinforcing wire and an outer sheath; the invisible micro cable and the reinforcing wire are arranged in parallel and penetrate through the inner part of the outer sheath; the outer diameter of the invisible micro cable is controlled to be 450-950 μm; from inside to outside along the radial direction, the invisible micro cable is sequentially composed of a non-colored optical fiber, a transparent tight-sleeve layer and a transparent heat-activated adhesive layer which are concentrically arranged with each other.

2. The covert butterfly optical cable of claim 1, wherein said non-colored optical fiber is a single-mode bend-resistant optical fiber and has a minimum bend radius controlled to be less than 8 mm.

3. The covert butterfly optical cable of claim 2, wherein said uncolored optical fiber has a mode field diameter controlled to be 9.2 ± 0.4 μm @1550nm and is compatible with G652 fiber.

4. The covert butterfly-shaped optical cable of claim 1, wherein the transparent tight-buffered layer is any one of a TPU layer, a nylon layer or a silica gel layer, and the thickness of the transparent tight-buffered layer is controlled to be 260-280 μm.

5. The covert butterfly-shaped optical cable of claim 1, wherein the outer sheath is made of a low smoke, halogen-free, flame retardant polyolefin material.

6. The covert butterfly-shaped optical cable of claim 1, wherein the reinforcing wire is formed by stranding copper-plated steel wires, phosphated steel wires, galvanized steel wires or aramid fiber wires.

7. The invisible butterfly optical cable of claim 1, wherein the reinforcing wires comprise a first reinforcing wire and a second reinforcing wire, and are distributed symmetrically on the upper and lower sides of the invisible micro cable.

8. The concealed butterfly-shaped optical cable according to any one of claims 1 to 7, wherein V-shaped grooves are formed on the left and right sides of the outer sheath at positions corresponding to the concealed micro-cables.

9. The covert butterfly cable of any one of claims 1-7, further comprising a tensile strand also disposed through an interior of the outer sheath and arranged parallel to the covert micro-cable.

10. The covert butterfly cable of claim 9, wherein the tensile strand is a glass fiber cable strength member.

Images