CN212647106U

CN212647106U - Heat shrink tube based on FTTH optical fiber

Info

Publication number: CN212647106U
Application number: CN202021662788.XU
Authority: CN
Inventors: 朱强
Original assignee: Shenzhen Shuangyu Industrial Co ltd
Current assignee: Shenzhen Shuangyu Industrial Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-03-02
Anticipated expiration: 2030-08-12

Abstract

The utility model relates to a heat shrink tube field, in particular to a heat shrink tube based on FTTH optical fiber, which comprises a sleeve and a hot melt tube arranged in the sleeve, wherein the outer wall of the sleeve is provided with a bulge along the axial direction of the sleeve, the sleeve is provided with a reinforcing rib along the axial direction of the sleeve, the sleeve is provided with a cavity, the inner wall of the sleeve is provided with a connecting piece, the hot melt tube wraps the connecting piece, the connecting piece comprises a fixed part arranged on the inner wall of the sleeve and a first connecting part connected with the fixed part, the first connecting part is arranged at the fixed part and is far away from one end of the sleeve, and the first connecting part is vertical to the fixed part, the bulge of the outer wall of the sleeve can play a role of buffering protection for the outer wall of the sleeve, meanwhile, in the installation process, the states of the heat shrink tube such as rotation, folding and stretching can be judged through the bulge, the damage to the optical fiber, prevent the hot melting pipe and the sleeve from falling off.

Description

Heat shrink tube based on FTTH optical fiber

Technical Field

The utility model relates to a pyrocondensation pipe technical field especially relates to pyrocondensation pipe based on FTTH optic fibre.

Background

FTTH, fibre (fiber) To The Home, i.e. fiber To The Home, is a transmission method for fiber-optic communication. Specifically, FTTH refers to the type of optical access network application that installs an Optical Network Unit (ONU) at a home subscriber or an enterprise subscriber and is closest to the subscriber in addition to FTTD (fiber to the desktop) in the optical access series. The heat shrinkable tube is a special polyolefin heat shrinkable sleeve, the outer layer is made of high-quality soft cross-linked polyolefin material and the inner layer of hot melt adhesive through composite processing, the outer layer has the characteristics of insulation, corrosion resistance, wear resistance and the like, and the inner layer has the advantages of low melting point, water resistance, sealing, high adhesion and the like. The existing FTTH-based optical fiber heat-shrinkable tube is likely to be damaged to FTTH optical fibers by the reasons of rotation, extrusion, stretching, compression and the like in the moving process, the installation process and the practical process, and the inspection of optical fiber breakpoints needs to be carried out section by section, so that the problem is very troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the prior art has the defects that the FTTH optical fiber is damaged due to the reasons of rotation, extrusion, stretching, compression and the like in the moving process, the installation process and the practical process, and providing the heat shrink tube based on the FTTH optical fiber.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a heat-shrinkable tube based on FTTH optic fibre, is in including sleeve pipe and setting intraductal hot melt pipe of sleeve, sheathed tube outer wall is followed sheathed tube axial is provided with the arch, follow on the sleeve pipe sheathed tube axial is provided with the strengthening rib, be provided with the cavity on the sleeve pipe, sheathed tube inner wall is provided with the connecting piece, the hot melt pipe will the connecting piece parcel, the connecting piece is including setting up the fixed part of sheathed tube inner wall and with the first connecting portion that the fixed part is connected, first connecting portion set up sheathed tube one end is kept away from to the fixed part, and first connecting portion with the fixed part is perpendicular.

Preferably, the connecting piece further comprises a second connecting portion, the second connecting portion is arranged at one end, away from the fixing portion, of the first connecting portion, and the cross sections of the fixing portion, the first connecting portion and the second connecting portion are in a shape like a Chinese character 'shan'.

Preferably, the cross-sectional shape of the protrusion is a semi-ellipse.

Preferably, the protrusion is elongated in the axial direction of the sleeve.

Preferably, the protrusion is block-shaped.

Preferably, the number of the cavities is multiple, and the multiple cavities are arranged along the circumferential direction of the sleeve.

The utility model has the advantages that:

the utility model discloses the arch of sheathed tube outer wall can play the buffering guard action to sheathed tube outer wall, simultaneously at the in-process of installation, can judge through the arch that the pyrocondensation pipe is rotatory, folding, state such as tensile, avoids causing the injury to inside optic fibre, utilizes the connecting piece can increase the connection stability between sleeve pipe and the hot melt pipe behind the hot melt pipe hot melt, prevents to drop between hot melt pipe and the sleeve pipe.

Drawings

Fig. 1 is a schematic structural diagram of a heat shrinkable tube based on an FTTH optical fiber according to the present invention;

FIG. 2 is a cross-sectional view taken at A-A in the heat shrinkable tube based on an FTTH optical fiber shown in FIG. 1;

FIG. 3 is an enlarged view of a portion of the heat shrinkable tube based on an FTTH optical fiber shown in FIG. 1 at B;

fig. 4 is a schematic structural diagram of a heat shrinkable tube based on an FTTH optical fiber according to another embodiment of the present invention.

In the figure: 1 hot melt pipe, 2 connecting pieces, 21 fixing parts, 22 first connecting parts, 23 second connecting parts, 3 bulges, 4 cavities, 5 reinforcing ribs and 6 sleeves.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-4, a heat shrinkable tube based on an FTTH optical fiber includes a sleeve 6 and a heat shrinkable tube 1 disposed in the sleeve 6, where an outer wall of the sleeve 6 is provided with a protrusion 3 along an axial direction of the sleeve 6, the protrusion 3 can buffer and protect an outer wall of the sleeve 6, and meanwhile, in an installation process, the protrusion 3 can determine states of the heat shrinkable tube, such as rotation, folding, and stretching, so as to avoid damage to an internal optical fiber, the sleeve 6 is provided with a reinforcing rib 5 along the axial direction of the sleeve 6, the reinforcing rib 5 can increase strength of the sleeve 6, the sleeve 6 is provided with a cavity 4, the cavity 4 can reduce impact and pressure on the sleeve 6 from outside, so as to protect the optical fiber, the inner wall of the sleeve 6 is provided with a connector 2, the heat shrinkable tube 1 wraps the connector 2, and the connector 2 includes a fixing portion 21 disposed on the inner wall of the sleeve 6 and a second fixing portion connected to the fixing portion 21 The first connecting part 22 is arranged at one end of the fixing part 21 far away from the sleeve 6, the first connecting part 22 is perpendicular to the fixing part 21, and the connecting stability between the sleeve 6 and the hot melt pipe 1 can be improved by using the connecting piece 2 after the hot melt pipe 1 is subjected to hot melt, so that the hot melt pipe 1 and the sleeve 6 are prevented from falling off.

Preferably, the connector 2 further includes a second connection portion 23, the second connection portion 23 is disposed at an end of the first connection portion 22 away from the fixing portion 21, and the cross-sectional shapes of the fixing portion 21, the first connection portion 22 and the second connection portion 23 are "chevron". The second connection portion 23 can further increase the connection stability between the sleeve 6 and the thermofusion tube 1, and prevent the thermofusion tube 1 and the sleeve 6 from falling off.

Preferably, the cross-sectional shape of the protrusion 3 is a semi-elliptical shape, which can play a role of buffering when the outer wall of the sleeve 6 is subjected to impact, extrusion and other forces.

Preferably, the protrusion 3 is elongated along the axial direction of the sleeve 6.

Preferably, the protrusions 3 are block-shaped.

Preferably, the number of the cavities 4 is multiple, and the multiple cavities 4 are arranged along the circumference of the sleeve 6. In one embodiment, the cavity 4 has a ring, the cavity 4 being arranged close to the outer wall of the sleeve 6. In another embodiment, the chamber 4 has two turns, one of which is disposed near the outer wall of the sleeve 6 and the other of which is disposed near the inner wall of the sleeve 6.

The utility model discloses sleeve 6's outer wall is followed sleeve 6's axial is provided with arch 3, and arch 3 can play the buffer protection effect to sleeve 6's outer wall, and simultaneously at the in-process of installation, can judge through arch 3 that the pyrocondensation pipe is rotatory, state such as folding, tensile, avoids causing the injury to inside optic fibre, utilizes connecting piece 2 can increase the stability of being connected between sleeve 6 and the hot melt pipe 1 behind 1 hot melt pipe of hot melt pipe, prevents to drop between 1 and the sleeve 6 of hot melt pipe.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A heat shrink tube based on FTTH optical fiber is characterized by comprising a sleeve (6) and a hot melt tube (1) arranged in the sleeve (6), the outer wall of the sleeve (6) is provided with a bulge (3) along the axial direction of the sleeve (6), the sleeve (6) is provided with a reinforcing rib (5) along the axial direction of the sleeve (6), a cavity (4) is arranged on the sleeve (6), a connecting piece (2) is arranged on the inner wall of the sleeve (6), the hot melting pipe (1) wraps the connecting piece (2), the connecting piece (2) comprises a fixing part (21) arranged on the inner wall of the sleeve (6) and a first connecting part (22) connected with the fixing part (21), the first connecting part (22) is arranged at one end of the fixing part (21) far away from the sleeve (6), and the first connecting portion (22) is perpendicular to the fixing portion (21).

2. An FTTH optical fiber-based heat shrink tube according to claim 1, wherein the connector (2) further comprises a second connecting portion (23), the second connecting portion (23) is disposed at one end of the first connecting portion (22) away from the fixing portion (21), and the cross-sectional shapes of the fixing portion (21), the first connecting portion (22) and the second connecting portion (23) are in a shape of Chinese character 'shan'.

3. An FTTH optical fiber-based heat shrink tube according to claim 1, wherein the cross-sectional shape of the protrusion (3) is a semi-ellipse.

4. A FTTH optical fiber-based heat shrinkable tube according to claim 3, wherein the projection (3) is elongated in the axial direction of the ferrule (6).

5. An FTTH-based optical fiber-based heat shrink tube according to claim 3, wherein said protrusions (3) are block-shaped.

6. An FTTH optical fiber-based heat shrink tube according to claim 1, wherein the number of said cavities (4) is plural, and a plurality of said cavities (4) are arranged along the circumference of said sleeve (6).