JPH0664213U - Optical connector ferrule - Google Patents

Abstract

(57) [Summary] [Object] When connecting an optical fiber tape to an optical fiber ferrule, it is possible to avoid the optical fiber from being broken due to a step between the boot and the V groove in the ferrule. For the purpose of providing. [Structure] The end of the V-shaped groove 3 in the optical connector ferrule 1 is formed into a curved slope 2, and the optical fiber inserted from the boot 6 in the direction of the arrow α moves smoothly along the slope 2 so that it is easy to bend without being broken. And is inserted into the fiber hole 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an optical connector ferrule for connecting optical fibers.

[0002]

[Prior art]

 Currently, in order to provide broadband services such as CATV and high-definition television, the construction of a subscriber optical line network connecting the central office and the customer is being actively promoted. Optical fiber connection technology is important for constructing this subscriber optical line network. Regarding the connection of this optical fiber, the multi-core batch connection technology for simultaneously connecting the optical fiber tapes that collectively cover several optical fiber strands as shown in Fig. 3 has made rapid progress, and the connection efficiency has dramatically increased. Improved. As an example of the optical fiber tape, FIG. 3 shows a cross-sectional view of a four-core optical fiber tape in which four optical fibers are collectively covered. Here, 9 is an optical fiber, 10 is an optical fiber coating, and 11 is a collective coating.

Generally, as a method of connecting these optical fibers, there are fusion splicing and connector connection. Fusion splicing is a method of melting and connecting optical fibers by electric discharge, and connector splicing is done by inserting and fixing the optical fiber in a connector plug made with high precision, and using these two plugs with pins. This is a method of connecting by aligning the axes.

FIG. 4 shows an example of connection of a multi-fiber optical connector. 1 is an optical connector ferrule, 12 is an optical fiber tape, 13 is a connector lip, and 14 is a fitting pin. By abutting the optical connector ferrule in the direction of the arrow through the fitting 14 pin, and fixing it with the connector clip 13. It is possible to connect a plurality of optical fibers together.

The assembly of this optical connector includes four steps of removing the coating of the optical fiber tape 12, inserting the optical fiber tape into the optical connector ferrule 1, adhering, and polishing the end surface. In particular, the process of inserting the optical fiber tape into the optical connector ferrule requires the most skill.

A detailed perspective view of the optical connector ferrule 1 is shown in FIG. 5, and a sectional view thereof is shown in FIG. 5 and 6, 1 is an optical connector ferrule, 3 is a V groove, 4 is a connector window portion, 5 is a fiber hole, 6 is a boot, 7 is a pin hole, 8 is a step, and V groove 3 is an optical flap. It is provided according to the number of cores of the fiber tape.

FIG. 8 is a perspective view of an optical fiber insertion tool used when inserting an optical fiber tape into an optical connector ferrule. 14 is a fitting pin, 15 is an insertion tool main body, 16 is a movable slide, 17 Is a connector fixing base, and 18 is a tape groove. The movable slide 16 moves in the direction of arrow γ or in the opposite direction. Insert the pin hole 7 of the optical connector ferrule 1 into the fitting pin 14 of the insertion tool main body 15 in the direction of the arrow β, and move the optical fiber tape from which the collective coating and the optical fiber coating are removed along the tape groove 18 to move. By sliding the slide 16 in the arrow γ direction, the optical fiber tape also slides in the arrow γ direction at the same time. Thereby, the optical fiber can be inserted into the optical connector ferrule 1.

[0008]

[Problems to be solved by the device]

 However, when the optical fiber insertion tool 15 is used to insert the optical fiber into the optical connector ferrule 1 from the direction of the arrow δ in FIG. There were times when 9 was broken. FIG. 7 is an enlarged view of an optical fiber tape inserted in a portion surrounded by a dotted line in FIG. 6, where 3 is a V groove portion, 8 is a step, and 9 is an optical fiber. The fact that the optical fiber 9 is broken at the step 8 is a great obstacle in automating the optical connector assembly. Therefore, inserting the optical fiber into the optical connector ferrule was the most time-consuming process. In order to solve the above problems, an object of the present invention is to provide an optical connector ferrule in which an optical fiber can be easily inserted without breaking.

[0009]

The present invention provides an optical connector ferrule for connecting an optical fiber tape, in which a step between the boot and the V groove portion in the optical connector ferrule is eliminated, and a slope having a curvature is provided, Further, it is characterized in that a V groove is provided on the slope portion thereof.

[0010]

[Action]

 By using the optical connector ferrule of the present invention, when the optical fiber is inserted, it is not possible to hit the step between the boot and the V groove portion in the ferrule and break it. Also, by providing the V groove in the slobe portion having a curvature, it is possible to easily insert an optical fiber having a plurality of cores into the fiber hole.

[0011]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows a sectional view of an optical connector ferrule of the present invention. 1 is an optical connector felt, 2 is a slope, 3 is a V groove, 4 is a connector window, 5 is a fiber hole, 6 is a boot, and the slope 2 is also provided with a V groove. 2 is an enlarged view of an optical fiber tape inserted in the portion surrounded by a dotted line in FIG. 1, in which 2 is a slope, 3 is a V groove, and 9 is an optical fiber. In this embodiment, a V groove is also provided on the slope 2.

When inserting the optical fiber, the optical fiber inserted from the boot 6 (in the direction of arrow α in FIG. 1) hits the slope 2 (FIG. 2), but the optical fiber moves along the slope 2. , The optical fiber will not break. Furthermore, by providing the V 2 groove in the slope 2 portion, the V groove 3 can be easily fitted in the V groove 3 without shaking in the direction perpendicular to the insertion direction, and can be inserted into the fiber hole 5 of the optical connector ferrule 1. Thus, by using the optical connector ferrule of the present invention, the optical fiber can be easily inserted without breaking.

[0013]

[Effect of device]

 As described above, according to the optical connector ferrule of the present invention, the step between the boot and the V groove portion in the optical connector ferrule is eliminated, and the slope having the curvature is formed so that the optical fiber is not broken. Further, by providing the V groove in the slope portion, the optical fiber can be easily inserted into the optical connector ferrule, and the workability is improved.

[Brief description of drawings]

FIG. 1 is a sectional view of an optical connector ferrule of the present invention.

FIG. 2 is an enlarged view of a slope portion of the present invention.

FIG. 3 is a sectional view of an optical fiber tape.

FIG. 4 is a connection example of a multi-fiber optical connector.

FIG. 5 is a perspective view of an optical connector ferrule.

FIG. 6 is a sectional view of an optical connector ferrule.

FIG. 7 is an enlarged view of a step portion in the optical connector ferrule.

FIG. 8 is a perspective view of an optical fiber insertion tool.

[Explanation of symbols]

 1 Optical connector ferrule 2 Slope 3 V groove 4 Connector window 5 Fiber hole 6 Boot 7 Pin hole 8 Step 9 Optical fiber 10 Optical fiber coating 11 Collective coating 12 Optical fiber tape 13 Connector clip 14 Fitting pin 15 Insert tool body 16 Movable Type slide 17 pin fixing base 18 tape groove

Claims (2)

[Scope of utility model registration request] 1. In an optical connector ferrule in which a plurality of optical fibers are arranged in parallel and an optical fiber tape coated in a tape form is connected, an end of a V groove portion in the optical connector ferrule is a slope having a curvature. An optical connector ferrule that is characterized. 2. The optical connector ferrule according to claim 1, wherein a V groove is provided in the slob portion.