CN218728157U

CN218728157U - Ferrule with welding points inside

Info

Publication number: CN218728157U
Application number: CN202223034503.XU
Authority: CN
Inventors: 金建峰; 刘光兵
Original assignee: Suzhou Guangzhuo Communication Technology Co ltd
Current assignee: Suzhou Guangzhuo Communication Technology Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-03-24
Anticipated expiration: 2032-11-16

Abstract

The utility model relates to the technical field of optical fiber components, in particular to a ferrule with a welding point inside, which comprises a ferrule, a first optical fiber and a second optical fiber, wherein the ferrule is internally provided with a through hole which is communicated from front to back, the through hole consists of a front section hole, a middle section hole and a back section hole in a three-section structure, anterior segment hole and middle section hole are straight holes, and anterior segment hole aperture is less than middle section hole aperture, and middle section hole aperture is less than back end hole aperture, and the fibre core of first optic fibre and the fibre core of second optic fibre are at the downthehole butt fusion of middle section, and the outer epoxy glue that wraps up of the downthehole fibre core of middle section, and its advantage lies in: move the splice protection to inside the pottery lock pin, save space by a wide margin, and do not influence outside optic fibre and bend, applicable in the small space application scene to the protection of splice can be strengthened.

Description

Ferrule with welding points inside

Technical Field

The utility model relates to an optical fiber assembly technical field is an insertion core of splice point in inside particularly.

Background

Along with to building safety's attention degree is more and more high, the sensor quantity that uses on the public building constantly increases, and these sensors adopt optic fibre to carry out data transmission mostly, during the construction, must cut optic fibre and lay the requirement with the adaptation optic fibre with the butt fusion, and the splice point is comparatively fragile after the optical fiber butt fusion, and slight atress just can lead to the disconnection of optical fiber splice point, in order to solve this problem, needs protect the splice point.

For protection of the welding points, the prior art is generally implemented by using welding protection tubes, such as the disclosed chinese patents: CN217213235U discloses an optical fiber fusion point protection device, which comprises a fusion protection tube sleeved outside a fusion point, an inner protection tube outside the fusion protection tube, an outer protection tube outside the inner protection tube, and a cement mortar layer arranged between the inner protection tube and the outer protection tube. The structure for protecting the welding points is too bulky. Even if only the fusion point protection tube is adopted, as shown in fig. 1, the volume is still too large to meet the application scene that needs the optical fiber bending.

SUMMERY OF THE UTILITY MODEL

The utility model provides a splice point is in the design of lock pin in inside, the splice point protection architecture volume that exists among its aim at solution above-mentioned prior art is too big, uses the limited problem of scene.

In order to achieve the purpose, the ferrule with the welding points inside comprises a ferrule, a first optical fiber and a second optical fiber, wherein a through hole which is communicated from front to back is arranged in the ferrule, the through hole consists of a front section hole, a middle section hole and a rear section hole in a three-section structure, the anterior segment hole and the middle segment hole are straight holes, the aperture of the anterior segment hole is smaller than that of the middle segment hole, the aperture of the middle segment hole is smaller than that of the rear segment hole, the fiber core of the first optical fiber and the fiber core of the second optical fiber are welded in the middle segment hole, and epoxy resin glue wraps the fiber core in the middle segment hole.

The utility model discloses still have following preferred technical scheme:

1. the rear section hole is in a straight hole structure or a taper hole structure.

2. The connection section between the front section hole and the middle section hole is of an R-angle structure.

3. The connection section between the middle section hole and the rear section hole is of an R-angle structure.

4. The coating layer of the first optical fiber is disposed within the back-end hole.

5. Tail rubber is arranged in the rear section hole.

Compared with the prior art, the utility model, its advantage lies in: move the splice protection to inside the pottery lock pin, save space by a wide margin, and do not influence outside optic fibre and bend, applicable in the small space application scene to the protection of splice can be strengthened.

Drawings

FIG. 1 is a schematic view of a conventional fusion splice between optical fibers;

FIG. 2 is a schematic view of the overall structure of the present invention;

in the figure: 1. the front section hole 2, the middle section hole 3, the rear section hole 4, the first optical fiber 5, the second optical fiber 6 and the welding point.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and the structure and principle of the present invention will be apparent to those skilled in the art. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in FIG. 2, the utility model relates to a splice point is lock pin in inside, including lock pin, first optic fibre and second optic fibre, be equipped with the through-hole that link up around in the lock pin, the through-hole constitute by the straight hole section of preceding back three-section, the straight hole aperture of anterior segment is 125 μm for fixed 125 μm's optic fibre core, the fibre core of second optic fibre extends to the straight hole in middle section in the straight hole of anterior segment. The aperture of the middle section straight hole is 200 mu m, the fiber core of the first optical fiber and the fiber core of the second optical fiber are welded in the middle section straight hole, the fiber core in the middle section straight hole is externally wrapped with epoxy resin glue, the aperture of the rear section straight hole is 250 mu m and used for fixing the fiber coating layer and enhancing the mechanical property of the optical fiber, the fiber coating layer of the first optical fiber is arranged in the rear section straight hole, and the fiber core of the first optical fiber extends to the middle section straight hole from the rear section straight hole. The linking section between anterior segment straight hole and the middle section straight hole is R angle structure, and the linking section between middle section straight hole and the back end straight hole is R angle structure, prevents the scratch optic fibre. Tail rubber is arranged in the straight hole of the rear section for side pulling reinforcement.

In a preferred embodiment, the through hole in the core is still formed by a three-segment structure, namely a straight hole segment of the front segment and the middle segment and a taper hole segment of the rear segment, the maximum aperture of the taper hole segment of the rear segment is larger than 250 μm, and the optical fiber coating layer of the first optical fiber is arranged in the taper hole segment of the rear segment.

As shown in figure 1, the fusion point of the optical fiber is outside the ferrule, and the fusion protection tube is sleeved outside the fusion point after fusion splicing of the optical fibers, because the ferrule exists, after the fusion protection tube is additionally added, the structure is larger in size, the length of the rigid part is longer, and in some small scenes, the optical fiber is difficult to bend because the rigid part is longer.

As shown in fig. 2, the fusion-spliced point of the optical fiber is provided inside the ferrule, no additional structure is required, the rigid portion is shorter, and the optical fiber is more easily bent.

Claims

1. The utility model provides a lock pin of splice point in inside, includes lock pin, first optic fibre and second optic fibre, is equipped with the through-hole that link up around the lock pin, its characterized in that: the through hole is composed of a front section hole, a middle section hole and a rear section hole in a three-section structure, the front section hole and the middle section hole are straight holes, the aperture of the front section hole is smaller than that of the middle section hole, the aperture of the middle section hole is smaller than that of the rear section hole, the fiber core of the first optical fiber and the fiber core of the second optical fiber are welded in the middle section hole, and the fiber core in the middle section hole is wrapped with epoxy resin glue.

2. A ferrule with a fusion point inside according to claim 1, wherein: the rear section hole is of a straight hole structure.

3. A ferrule with a fusion point inside according to claim 1, wherein: the rear section hole is in a taper hole structure.

4. A ferrule with fusion points in the interior according to any of claims 1-3, wherein: the connection section between the front section hole and the middle section hole is of an R-angle structure.

5. A ferrule with a fusion point inside according to claim 2, wherein: the connecting section between the middle section hole and the rear section hole is of an R-angle structure.

6. A ferrule with fusion points in the interior according to any of claims 1-3, wherein: the coating layer of the first optical fiber is arranged in the rear section hole.

7. A ferrule with a fusion point inside according to claim 6, wherein: and tail rubber is arranged in the rear section hole.