JPH0776804B2 - Optical fiber connector manufacturing method - Google Patents

Description

The present invention relates to a method for manufacturing an optical fiber connector.

[Prior Art] FIG. 3 shows a conventional example of an optical fiber connector.

As shown in the figure, in the conventional optical fiber connector, the two-fluid adhesive 2 is injected into the ferrule 1 as shown in FIG. 4, the optical fiber strand 3, the jacket 4,
The sheath 5 that has been stripped off in order is inserted into the ferrule 1 and bonded.

[Problems to be Solved by the Invention] In the above-mentioned conventional technology, since the adhesive is a liquid, it is necessary to measure the mixing ratio of the two liquids every time the work is performed, and further stir the mixture to inject it into the ferrule. It was

Also, the adhesives that have been used in the past are generally of epoxy resin type, but this may cause an allergic disease if it adheres to the skin, so it is necessary to use protective gloves etc. It was worse.

The present invention has been made in view of the above points, and an object of the present invention is to provide a method for manufacturing an optical fiber connector that can improve workability.

[Means for Solving the Problems] The gist of the present invention is to insert an end of an optical fiber having a jacket and a sheath on the outer circumference of an optical fiber wire into a ferrule, and to connect the optical fiber and the ferrule. In a method of constructing an optical fiber connector that is adhesively fixed with an adhesive, a step of stripping the jacket and the sheath at the end of the optical fiber, while mixing a prescribed amount of a powdered main agent and a curing agent is used. , The inner space portion has a shape that substantially matches the stepped shape of the optical fiber terminal, and the outer portion has a shape that is substantially in conformity with the inner shape of the ferrule. Prepare a curable adhesive, first insert the thermosetting adhesive that has been pre-compacted into the ferrule into the ferrule, and then insert the light stripped in the inner space of the thermosetting adhesive. fiber Then, the thermosetting adhesive is once melted by heating the ferrule to mix the main agent and the curing agent, and then cured to bond the ferrule and the optical fiber terminal. According to another aspect of the present invention, there is provided an optical fiber connector manufacturing method.

[Function] A thermosetting adhesive powder at room temperature has an internal space portion that substantially conforms to a predetermined shape, that is, the shape of the optical fiber step stripping treatment,
The outer shape of the ferrule is pre-formed into a shape that roughly matches the inner shape of the ferrule. First, insert it into the ferrule, insert the stripped optical fiber strand, jacket, and sheath into it, and heat the ferrule part to make it thermosetting. The adhesive once becomes a liquid, the main agent and the curing agent are mixed, and the adhesive is cured to bond the ferrule to the optical fiber element wire, the jacket, and the sheath.

Therefore, unlike the conventional adhesive, there is no need to mix and stir to inject into the ferrule, and the adhesive does not adhere to the skin, thus improving workability.

[Example] Hereinafter, a manufacturing method of the present invention will be described based on an illustrated example.

An embodiment of the present invention is shown in FIGS.

Since the same parts as those of the conventional one are designated by the same reference numerals, the description thereof will be omitted.

In this embodiment, the adhesive 2a has a predetermined shape, that is, an internal space portion that substantially matches the stepped shape of the optical fiber, and the outer shape is formed in advance in a shape that substantially matches the inner shape of the ferrule. The thermosetting adhesive was inserted into the ferrule 1 and was powdery at room temperature.

By doing so, the workability is improved, and the optical fiber connector capable of improving the workability can be obtained.

That is, the adhesive 2a is formed into a billet by mixing a powdered base material and a curing agent in specified amounts and compacting.

The adhesive (see FIG. 2) that has been compacted into a predetermined shape in this manner is inserted into the ferrule 1 (see FIG. 1).

Insert an optical fiber having a stripped optical fiber strand, a jacket and a sheath (neither shown) into this,
Heat ferrule 1.

When heated, the powder-molded adhesive 2a is once melted, the main agent and the curing agent are mixed, and the mixture is cured to bond the optical fiber element wire, the jacket and the sheath to the ferrule 1, and the conventional structure shown in FIG. It will be exactly the same.

As described above, according to this embodiment, it is not necessary to measure, stir, and inject the mixing ratio of the two liquids as in the conventional case, and the assembling work of the optical fiber connector can be shortened and the optical fiber connector can be easily supplied.

It is also desirable for safety and hygiene because it does not touch the adhesive.

[Advantages of the Invention] As described above, according to the present invention, workability is improved.
An optical fiber connector capable of improving workability can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view showing a state in which a powder-molded adhesive of an embodiment of the optical fiber connector manufacturing method of the present invention is inserted into a ferrule, and FIG. 2 is also used in an embodiment of the present invention. FIG. 3 is a vertical cross-sectional side view of the pressure-molded adhesive, and FIG. 3 is a vertical cross-sectional side view showing an example of a conventional optical fiber connector.
FIG. 4 is a vertical sectional side view showing an example of a conventional ferrule. 1: Ferrule, 2a: Adhesive, 3: Optical fiber strand, 4: Jacket, 5: Sheath.

Claims (1)

[Claims] 1. A method of constructing an optical fiber connector in which an end of an optical fiber having a jacket and a sheath on the outer periphery of an optical fiber is inserted into a ferrule and the optical fiber and the ferrule are bonded and fixed with an adhesive. Then, the jacket and the sheath of the end portion of the optical fiber are stepped off, while a prescribed amount of a powdery main agent and a curing agent are mixed, and the inner space portion is a stepped off shape of the optical fiber end. Has a shape that substantially corresponds to, the outside is pre-compacted so as to have a shape that substantially matches the shape of the inside of the ferrule, and a thermosetting adhesive that is solid at room temperature is prepared in advance. Insert the pre-compacted thermosetting adhesive, then insert the end of the optical fiber that has been subjected to the step treatment in the inner space of the thermosetting adhesive, after which,
By heating the ferrule, the thermosetting adhesive is once dissolved to mix the main component and the curing agent and then cured to bond the ferrule and the optical fiber terminal to each other. Production method.