JP3824881B2 - Assembly package for optical fiber cord parts and method for manufacturing the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an assembly package for an optical fiber cord component for inserting a ring-shaped component into an optical fiber cord, and a method for manufacturing the same.
[0002]
[Prior art]
When connecting the cord of the optical fiber cord, a rubber hood, a ring, a caulking ring, a stop ring, and a spring, which are necessary ring-shaped parts, are inserted into the optical fiber cord in advance. Next, the end of the optical fiber cord into which these components are inserted is subjected to terminal treatment, and the ferrule is bonded and fixed to the core wire subjected to the terminal treatment, and the ferrule end is polished. After that, the plug frame is attached to the stop ring, the tensile strength body is crimped and fixed on the stop ring using a caulking ring, the outer cover is crimped and fixed on the caulking ring using the ring, and then a rubber hood is attached.
[0003]
[Problems to be solved by the invention]
However, when connecting the cord of the conventional optical fiber cord described above, a rubber hood, a ring, a caulking ring, a stop ring, and a spring one by one in an optical fiber cord with low rigidity, in order and paying attention to the insertion direction, There was a need to insert. For this reason, not only is the insertion operation complicated, but there is a tendency for missing insertion parts and mistakes in the insertion direction to reduce the efficiency of the operation.
[0004]
The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide an assembly package for an optical fiber cord component that improves work efficiency and a manufacturing method thereof.
[0005]
[Means for Solving the Problems]
In order to achieve this object, the invention according to claim 1 fixes a plurality of ring-shaped parts to be inserted into the optical fiber cord to the heat-shrinkable resin coating so that the respective shaft holes are coaxial. This heat-shrinkable resin coating can be peeled off from the plurality of ring-shaped parts.
Therefore, a plurality of ring-shaped parts are packaged by heat-shrinkable resin coating , and the plurality of ring-shaped parts are inserted into the optical fiber cord at one time, and then the heat-shrinkable resin coating is peeled off from the plurality of ring-shaped parts. To do.
[0006]
The invention according to claim 2 is the invention according to claim 1, wherein the plurality of ring-shaped components are fixed by a plurality of heat-shrinkable resin coatings so that the ring-shaped components to be fixed are different.
Therefore, when the optical fiber cord is connected to the cord, the heat-shrinkable resin coating is individually peeled to keep the ring-shaped component to be assembled later among the plurality of ring-shaped components held by the heat-shrinkable resin tube. be able to.
[0007]
According to a third aspect of the present invention, there is provided a step of inserting a plurality of ring-shaped components to be inserted into an optical fiber cord into a rigid temporary support shaft, and a heat capable of peeling the entire ring-shaped component inserted into the temporary support shaft. A step of covering with a shrinkable resin, a step of heating the heat-shrinkable resin, and a step of extracting a temporary support shaft from the plurality of ring-shaped components.
Therefore, by heating the heat-shrinkable resin, the plurality of ring-shaped parts are fixed to the heat-shrinkable resin, and by removing the temporary support shaft, the respective shaft holes of the plurality of ring-shaped parts are positioned coaxially. .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 are views for explaining a method of manufacturing an assembly package for an optical fiber cord component according to the present invention. FIG. 3 is a diagram for explaining a method of transferring a plurality of ring-shaped components from the assembly package for optical fiber cord components to an optical fiber cord. FIG. 4 is a side view for explaining an optical fiber cord connecting method.
[0010]
In FIG. 1A, a reference numeral 1 denotes a metal temporary support shaft formed in a pipe shape. The temporary support shaft 1 includes a spring 2 and a stop ring as a plurality of ring-shaped parts. 3, a caulking ring 4, a ring 5, and a rubber hood 6 are loosely inserted. The plurality of ring-shaped parts 2 to 6 are formed such that the inner diameter D2 of any one of the parts 2 to 6 is larger than the outer diameter D1 of the temporary support shaft 1, as in the rubber hood 6 shown in FIG. The inner diameter D2 of any of the components 2 to 6 is formed larger than the outer diameter D3 of the optical fiber cord 15 described later in FIG. The plurality of ring-shaped parts 2 to 6 are inserted one by one by hand or an automatic machine in a certain order and with the wrong insertion direction, and the temporary support shaft 1 is formed of a rigid material. Therefore, when it is performed by hand, the insertion is easy, and when it is performed by an automatic machine, the introduction of the automatic machine is facilitated.
[0011]
In FIG. 2C, 8 is a heat-shrinkable resin tube (heat-shrinkable resin coating) as a fixing member, and two perforations 9 are formed in the axial direction. This heat-shrinkable resin tube The inner diameter of 8 is formed larger than the outer diameter of any of the plurality of ring-shaped components 2 to 6. As shown in FIG. 2D, the heat-shrinkable resin tube 8 is loosely inserted into the temporary support shaft 1 to cover the plurality of ring-shaped components 2 to 6.
[0012]
As shown in FIG. 2 (a), the heat-shrinkable resin tube 8 is shrunk by heating, and this heat-shrinkable resin tube 8 is brought into close contact with the outer surfaces of the plurality of ring-shaped components 2 to 6, thereby The plurality of ring-shaped components 2 to 6 are held by the heat-shrinkable resin tube 8 by the tension of the shrinkable resin tube 8. The heating temperature in this heating process is set higher than the melting point of the heat-shrinkable resin tube 8 and lower than the melting point of the rubber hood 6.
[0013]
As described above, since the plurality of ring-shaped components 2 to 6 are fixed by the heat-shrinkable resin tube 8, it is possible to prevent the plurality of ring-shaped components 2 to 6 from being lost and the insertion direction is incorrect. The transfer to 15 can be performed reliably. In addition, since the plurality of ring-shaped parts 2 to 6 are fixed at a time by utilizing the shrinkage of the heat-shrinkable resin tube 8, not only the productivity is improved but also mass production is possible. In addition, since the outer diameter of the ring-shaped parts 2 to 6 can be changed, it can be applied to the ring-shaped parts of various plug frames, and not only the versatility is improved but also the manufacturing cost is reduced. You can also.
[0014]
As shown in FIG. 4B, by pulling the temporary support shaft 1 from the shaft holes of the plurality of ring-shaped parts 2 to 6, the heat-shrinkable resin tube 8 and the plurality of ring-shaped parts 2 to 6 An assembly package 12 for fiber cord components is formed. In this assembly package 12 for optical fiber cord parts, the shaft holes of the plurality of ring-shaped parts 2 to 6 are coaxially positioned, and the shaft hole 11 extending in the axial direction of the heat-shrinkable resin tube 8 is provided. It has been. As described above, since the plurality of ring-shaped components 2 to 6 can be managed as one assembly package 12 for an optical fiber cord component, it is not necessary to manage individual components, so that complicated component management is not required.
[0015]
In order to transfer the plurality of ring-shaped components 2 to 6 from the optical fiber cord component assembly package 12 thus formed to the optical fiber cord 15, as shown in FIG. An optical fiber cord 15 is inserted into the shaft hole 11 of the package 12. As shown in FIG. 2B, the heat-shrinkable resin tube 8 is cut from the perforation 9 so that the heat-shrinkable resin tube 8 is peeled off from the plurality of ring-shaped parts 2 to 6, and the heat-shrinkable resin is removed. The holding of the plurality of ring-shaped components 2 to 6 by the tube 8 is released, and the plurality of ring-shaped components 2 to 6 are loosely inserted into the optical fiber cord 15 as shown in FIG. As described above, since the plurality of ring-shaped components 2 to 6 can be transferred to the optical fiber cord 15 at a time, the working time is shortened.
[0016]
Next, a method of connecting the optical fiber cord 15 having such a configuration will be described with reference to FIG.
As shown in FIG. 6A, the optical fiber cord 15 is subjected to terminal processing, the core wire 16 and a part of the optical fiber 17 are exposed, and the ferrule 18 is fixed to the optical fiber 17 with an adhesive. Finish the end face by polishing. As shown in FIG. 2B, after the plug frame 19 is attached to the stop ring 3, the tensile strength body 20 is crimped and fixed onto the stop ring 3 using the caulking ring 4, and the exposed portion of the tensile strength body 20 is cut. . As shown in FIG. 4D, the outer cover 21 is fixed by crimping onto the caulking ring 4 using the ring 5, and the rubber hood 6 is attached as shown in FIG.
[0017]
FIG. 5 shows a second embodiment of the present invention, in which FIG. 5 (a) is a side view showing a state in which a plurality of ring-shaped parts are covered with a heat-shrinkable resin tube, partially broken, and FIG. ) Is a cross-sectional view showing a state in which a heat-shrinkable resin tube is heated.
In the second embodiment, in addition to the heat-shrinkable resin tube 8 in the first embodiment described above, a rubber hood 6, a ring 5, and a caulking ring 4 are disposed inside the heat-shrinkable resin tube 8. The second heat-shrinkable resin tube 25 is provided. Although not shown, the second heat-shrinkable resin tube 25 is also provided with two perforations in the axial direction similarly to the heat-shrinkable resin tube 8 described above.
[0018]
As shown in FIG. 2B, by heating these two heat shrink resin tubes 8 and 25, the two heat shrink resin tubes 8 and 25 are contracted. When the second heat-shrinkable resin tube 25 is in close contact with the outer surface of the rubber hood 6, the ring 5, and the caulking ring 4, the rubber hood 6, the ring 5, and the caulking ring 4 are moved by the tension of the second heat-shrinkable resin tube 25. It is held by the second heat-shrinkable resin tube 25. At the same time, the heat-shrinkable resin tube 8 is brought into close contact with the outer surface of the rubber hood 6, the ring 5, the caulking ring 4 and the spring 2, and the stop ring 3 through the second heat-shrinkable resin tube 25. The plurality of ring-shaped parts 2 to 6 are held by the heat-shrinkable resin tube 8 by the tension of 8.
[0019]
In such a configuration, the temporary support shaft 1 is extracted from the shaft holes of the plurality of ring-shaped components 2 to 6, and instead inserted through the optical fiber cord and cut from the perforation 9 of the heat-shrinkable resin tube 8. The spring 2 and the stop ring 3 held by the heat-shrinkable resin tube 8 are released. Thus, the spring 2 and the stop ring 3 among the plurality of ring-shaped members 2 to 6 can be loosely inserted into the optical fiber cord 15 first. Accordingly, when the cord connecting work of the optical fiber cord is performed later, the other ring-shaped members 4 to 6 that perform the cord connecting work later are connected to the second heat at the cord connecting work of the spring 2 and the stop ring 3. Since it can be set as the state hold | maintained by the shrinkable resin tube 25, workability | operativity improves.
[0020]
Although the spring 2, the stop ring 3, the caulking ring 4, the ring 5 and the rubber hood 6 are used as the plurality of ring-shaped parts, the configuration varies depending on the type of the plug frame 14. Although the heat shrinkable resin tube 8 is used as the fixing member, a plurality of ring-shaped parts 2 to 6 are sandwiched between two heat shrinkable films, and the two heat shrinkable films are heated to heat shrink. The heat-shrinkable film may be shrunk to hold the plurality of ring-shaped parts 2 to 6 and the two heat-shrinkable films may be bonded to each other. In that case, it is not always necessary to provide the perforation 9 like the heat-shrinkable resin tube 8 if the two films are peeled from the plurality of ring-shaped components 2 to 6. In addition, the plurality of ring-shaped components 2 to 6 are fixed to the heat-shrinkable resin tube 8 by heating the heat-shrinkable resin tube 8. However, the fixing member is made of paper or resin, and the paper or resin is bonded to the paper or resin. A plurality of ring-shaped parts 2 to 6 may be fixed. Further, the plurality of ring-shaped parts 2 to 6 are covered with a bag-like film so as to be sealed, the inside of the film is evacuated, and the plurality of ring-shaped parts 2 to 6 are fixed to the film. Good.
[0021]
Further, the plurality of ring-shaped parts 2 to 6 are fixed to the heat-shrinkable tube 8 while being spaced apart from each other, but are fixed to the heat-shrinkable tube 8 with the plurality of adjacent ring-shaped parts 2 to 6 being in close contact with each other. May be. In the second embodiment, two heat-shrinkable resin tubes are used, but three or more heat-shrinkable resin tubes may be used as necessary. In addition, the entire ring-shaped components 2 to 6 are held by the heat-shrinkable resin tube 8, but the spring 2 and the stop ring 3 may be held by the heat-shrinkable tube 8. Design changes are possible.
[0022]
【The invention's effect】
As described above, according to the first aspect of the present invention, a plurality of ring-shaped components can be transferred to the optical fiber cord at a time, thereby reducing the work time. Further, since the plurality of ring-shaped parts are fixed by the heat-shrinkable resin tube, the lack of the plurality of ring-shaped parts and the mistake in the insertion direction can be prevented, so that the transfer can be reliably performed. Further, since the temporary support shaft is formed of a material having a rigid body, not only the operation of inserting a plurality of ring-shaped parts into the temporary support shaft is easy, but also an automatic machine can be easily introduced. Furthermore, since a plurality of ring-shaped parts can be managed as a package, it is not necessary to manage individual parts, so that complicated part management is not required.
[0023]
Moreover, according to the invention which concerns on Claim 2 , workability | operativity at the time of the cord connection operation | work of an optical fiber cord improves.
[0024]
Further, according to the invention according to claim 3 , since the plurality of ring-shaped parts are fixed at a time by utilizing the shrinkage of the heat-shrinkable resin tube, not only the productivity is improved but also mass production is possible. It is. Moreover, since it can respond even if the outer diameter of the ring-shaped part changes, it becomes possible to cope with the ring-shaped part of various plug frames, and not only the versatility is improved but also the manufacturing cost can be reduced.
[Brief description of the drawings]
FIG. 1 shows a first half process for explaining a method for manufacturing an assembly package for an optical fiber cord component according to the present invention, and FIG. 1 (a) shows a state in which a plurality of ring-shaped components are loosely inserted into a temporary support shaft. The side view to show, The figure (b) is expanded sectional drawing for demonstrating the relationship between the outer diameter of a temporary support shaft, and the internal diameter of several ring-shaped components, The figure (c) is a heat-shrinkable resin tube. FIG. 4D is a side view partially broken away showing a state in which a plurality of ring-shaped parts are covered with a heat-shrinkable resin tube.
FIG. 2 shows the latter half of the process for explaining the manufacturing method of the assembly package for an optical fiber cord component according to the present invention. FIG. 2 (a) is a cross-sectional view showing a state in which a heat-shrinkable resin tube is heated. FIG. 2B is a cross-sectional view showing a state where the temporary support shaft 1 is removed.
FIG. 3 is a view for explaining a method of transferring a plurality of ring-shaped parts from the assembly package for an optical fiber cord part according to the present invention to an optical fiber cord, and FIG. 3 (a) is an optical fiber cord according to the present invention; A cross-sectional view showing a state where an optical fiber cord is inserted into a component assembly package, FIG. 5B is a cross-sectional view showing a state where a heat-shrinkable resin tube is peeled from a plurality of ring-shaped components, and FIG. It is a side view which shows the state which moved the ring-shaped components of this to the optical fiber cord.
4A and 4B are side views for explaining the optical fiber cord connecting method according to the present invention, in which FIG. 4A shows the end processing of the optical fiber cord, and FIG. 4B shows the stop ring. The state where the plug frame is attached is shown. FIG. 10C shows a state in which the strength member is crimped and fixed onto the stop ring using the caulking ring. FIG. 9D shows the state in which the outer cover is fixed to the caulking ring. The figure (e) shows the state which attaches a rubber hood.
FIG. 5 shows a second embodiment of the present invention, in which FIG. 5 (a) is a partially cutaway side view showing a state in which a plurality of ring-shaped parts are covered with a heat-shrinkable resin tube. b) is a cross-sectional view showing a state in which the heat-shrinkable resin tube is heated.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Temporary support shaft, 2 spring, 3 ... Stop ring, 4 ... Caulking ring, 5 ... Ring, 6 ... Rubber hood, 8 ... Heat-shrinkable resin tube, 11 ... Shaft hole, 12 ... Assembly package for optical fiber cord parts, DESCRIPTION OF SYMBOLS 15 ... Optical fiber cord, 16 ... Core wire, 17 ... Optical fiber, 18 ... Ferrule, 19 ... Plug frame, 20 ... Strength body, 21 ... Outer casing, 25 ... 2nd heat shrink resin tube.

Claims (3)

A plurality of ring-shaped components to be inserted into the optical fiber cord can be fixed to the heat-shrinkable resin coating so that the respective shaft holes are coaxial, and the heat-shrinkable resin coating can be peeled off from the plurality of ring-shaped components. An assembly package for optical fiber cord parts characterized by the above. 2. The optical fiber cord assembly package according to claim 1 , wherein the plurality of ring-shaped components are fixed by a plurality of heat-shrinkable resin coatings so that the ring-shaped components to be fixed are different. Assembly package. A step of inserting a plurality of ring-shaped components to be inserted into the optical fiber cord into a rigid temporary support shaft, and a step of covering the entire ring-shaped component inserted into the temporary support shaft with at least one heat-shrinkable resin that can be peeled off And a step of heating the heat-shrinkable resin and a step of extracting a temporary support shaft from the plurality of ring-shaped components.

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