JP4673249B2 - Cable connector pulling cap device and optical cable wiring method using the same - Google Patents

Description

  The present invention relates to a cable connector pulling cap used for carrying out optical fiber wiring by passing an optical fiber cable used for advanced information communication in a building or home from an optical branch end into a wiring conduit. The present invention relates to an apparatus and an optical cable wiring method using the same.

  Conventionally, as a technique for performing optical fiber wiring by passing an optical fiber cable from an optical branch end into a wiring conduit, for example, as disclosed in Patent Document 1, it can be attached to and detached from a lock portion of a connector. There is a technique that uses a towing end provided with a flexible sleeve holder.

That is, the sleeve holder and the untwisted string are connected with a string, and the twisted string is connected to the untwisted thread. The sleeve holder is attached to the connector lock so that the ferrule can be inserted, and the sleeve holder is further provided with a sleeve for protecting the connector. By attaching a protective cap to the sleeve and attaching the protective cap to the connector, the towing end is attached to the connector, and this towing end is connected to the tip of a tool that has been previously wired in the pipe line and pulled in. An optical cable with a connector is passed through the pipe and optical fiber wiring is performed.
JP 2003-322727 A

  However, conventionally, the pipe inner diameter is not designed to be sufficiently large with respect to the connector. For example, the outer diameter of the connector is about 7.5 × 9 mm and the length is about 26 mm, whereas the inner diameter of the pipe is about 15 to 30 mm, particularly about 15 to 22 mm for home use. Therefore, when the wiring conduit is bent at, for example, a right angle, it is quite difficult to pass the connector through the conduit. That is, there is a high degree of collision between the inner wall of the pipe and the connector, and they are easily damaged.

  Further, according to the technique disclosed in Patent Document 1, since the towing end is composed of five points, that is, a sleeve holder, a sleeve, a protective cap, a string, and untwisting, there are too many members to perform assembly and removal work. A very narrow pipe that twists along the pull-in direction because it is very troublesome and has only a degree of freedom in the direction of torsion rotation perpendicular to the pull-in direction by twisting back when passing through the pipe. When passing through the road, even if the optical cable itself has bending rigidity, the tow end sleeve, protective cap, string, untwisted component parts, especially the lock part and sleeve holder formed on the connector There is a risk that excessive load or friction will be applied to the mounting part due to excessive bending.

  Therefore, the present invention has been made in view of the conventional circumstances as described above, and the cap device itself can be easily assembled and removed from the connector by constituting it with a simple single member. In addition, by providing flexibility to the cap device itself, when the cable is routed in a very narrow wiring conduit, the piping inner wall of the wiring conduit having a bent portion collides with the connector. And a cable connector pulling cap device that can absorb and relieve excessive load and friction on the connector due to collision with the inner wall of the pipe, and an optical cable wiring method using the same For the purpose.

In order to solve the above-described problem, the cable connector pulling cap device according to the present invention is a connector part having a structure in which the plug frame and the knob are removed from the connector of the finished product, and the stop ring is provided with a spring. A cable connector pulling cap device for pulling the connector part formed by fixing the optical cable Kevlar to the stop ring using caulking , and the cap device has a narrow width. In the state where it is inserted into the hole, a connector mounting part that is detachably fitted and fixed to the stop ring via a fixing means in the wide cylindrical part on the rear side of the hole part, and a wiring pipe line a hook portion for hooking the towing tool that line made by connecting via the arm portion having flexibility, a single member Wherein the configured Te.

  In the above configuration, the fixing means is a screw-in type, and the length of the arm portion is substantially the same as or slightly longer than the length of the connector mounting portion.

On the other hand, in the optical cable wiring method using the cable connector pulling cap device according to any one of claims 1 to 3, the connector having a structure in which the plug frame and the knob are removed from the connector of the finished product. A connector mounting part for fixing the connector ring to the stop ring, which is a component, wherein the ferrule is mounted on the stop ring via a spring, and the Kevlar of the optical cable is fixed to the stop ring using caulking. A narrow portion of the connector mounting portion of the cap device formed by a single member formed by connecting a hook portion for hooking a towing tool that is passed through the pipe line, and a flexible arm portion. With the ferrule inserted into the wide hole, it is fixed to the stop ring at the wide cylindrical part on the rear side of the hole. Through means is removably fitted and fixed, the hook portion of the cap device and the optical cable by pulling it by hooking the towing tool that Tsusen the wiring conduit to Tsusen the wiring duct Thereafter, the cap device is removed from the stop ring of the connector part, and a plug frame and a knob are assembled to the connector part to form a finished connector, which is attached to a connection adapter provided in the outlet box .

  According to the present invention, by constituting the cap device itself with a simple single member, it is possible to easily assemble and remove small connector parts and to provide flexibility to the cap device itself. Therefore, when a cable is routed in a very narrow conduit, it can be passed smoothly even if the pipe inner wall of the bent conduit and the connector collide with each other, and with the inner wall of the pipe. It is possible to absorb and mitigate excessive loads and friction on the connector parts due to the collision.

  That is, in the present invention, the cap device is a connector mounting portion that is detachably fitted and fixed to the stop ring via the fixing means in a state where the ferrule in the small connector part that does not have the plug frame or the knob is inserted. And a hook portion for hooking a towing tool that has been previously wired in the wiring conduit through a flexible arm portion, so that the cable can be used in a very narrow wiring conduit. When passing through, for example, the pipe inner wall of the wiring line having a bent portion and the connector part can be smoothly pulled and passed without colliding.

  In particular, since the connector mounting portion of the cap device can be fitted to the stop ring of the connector via the fixing means with the ferrule inserted into the hole portion, the entire ferrule is protected by the connector mounting portion, and the wiring tube Even if the inner wall of the road collides with the connector, the ferrule itself is not damaged. In addition, the bending force on the cap device when passing through a narrow and narrow wiring conduit is absorbed and relaxed by the flexible arm portion, so that excessive loads and friction on the connector parts are minimized. be able to.

  Since the fixing means is a screw-in type, the assembling and detaching operations for the connector parts of the cap device can be easily performed. In addition, since the length of the arm portion is substantially the same as or slightly longer than the length of the connector mounting portion, the cap device can be reduced in size, and the arm portion can be freely bent with respect to the connector mounting portion of the cap device. A sufficient degree can be secured.

  Further, in the optical cable wiring method according to the present invention, in the small connector part formed by attaching a spring and a ferrule to the stop ring and fixing the Kevlar of the optical cable to the stop ring using caulking. Fit the connector mounting part of the cap device to the ring with the ferrule inserted in the hole of the cap device, and hook the traction tool that has been previously passed through the wiring conduit to the hook part of the cap device. After drawing the cable, the optical cable is routed through the optical pipe by removing the cap device from the stop ring of the connector part. Thus, the assembly and removal of the cap device with respect to the connector portion is performed. Since the work can be done easily, the optical fiber wiring work It can be carried out with the speed.

  After wiring, the cap device is removed from the stop ring, and the plug frame and knob are assembled to the connector parts to make the finished connector, which is attached to the connection adapter provided in the outlet box. It can be performed quickly and smoothly.

  That is, in the optical cable passing method according to the present invention, the cable Kevlar is sandwiched between the stop ring and the caulking ring and further fixed by the boot. Therefore, the demand for miniaturization of the connector during wiring in the conduit for wiring is satisfied, and at the same time, even if the stop ring is pulled by the cap device, the optical fiber of the cable is inserted and held around this by the pulling force There is no possibility that the ferrule and the coil spring being pulled are pulled together. In other words, the connector parts are not adversely affected by the traction with the cap device, thereby making it easy to assemble existing parts without requiring damage repair of the connector parts after wiring, Moreover, it can be performed with a single touch, and work efficiency can be improved.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Reference numeral 1 shown in the figure denotes a cable connector pulling cap device used for passing an optical cable K used for advanced information communication from the optical branch end P into the wiring conduit Q. As shown in FIGS. 1 and 2, the apparatus 1 includes a bottomed cylindrical connector mounting portion 2 for mounting a small connector part 11 so as to cover a ferrule 14 and a wiring pipe Q in advance. A hook portion 3 for hooking a traction tool that is connected to the arm is connected via a substantially strip-shaped arm portion 4 having flexibility.

  When the cap device 1 is formed, the connector mounting portion 2, the hook portion 3, and the arm portion 4 are integrally formed simultaneously by, for example, injection molding of an elastic member using a mold.

  As shown in FIG. 2, the connector mounting portion 2 of the cap device 1 is provided with a narrow hole 2a for inserting the ferrule 14 of the connector part 11 attached to the optical cable K. Since the rear side has a wide cylindrical shape, an opening end 2b is formed for fitting and fixing the stop ring 12 of the connector part 11 so as to be detachable via a fixing means 5 described later. .

  As a means for fixing the stop ring 12 to the opening end 2b, as shown in FIG. 2, a female screw portion 5a formed on the inner periphery of the opening end 2b is provided at a symmetrical position on the outer periphery of the stop ring 12. The male screw portion 5b on the outer periphery of the protrusion 6 is screwed.

  As the fixing means 5, a bendable locking piece projecting on the inner periphery of the opening end 2b is engaged with a locking hole formed on the outer periphery of the stop ring 12, or more arbitrarily. A so-called bayonet structure that can be locked at the rotational position, or various other locking methods can be employed.

  Further, as shown in FIG. 1 or FIG. 2, for example, a rope L, which is a towing tool that has been previously connected in the wiring conduit Q, is hooked on the tip of the arm portion 4 extending from the connector mounting portion 2. The ring-shaped hook portion 3 is formed. The length of the arm portion 4 is substantially the same as or slightly longer than the length of the connector mounting portion 2, so that the cap device 1 can be reduced in size and at the same time the waist strength of the arm portion 4 is maintained. However, it is set so that the degree of freedom of bending of the arm portion 4 itself with respect to the connector mounting portion 2 can be sufficiently secured. Note that the towing tool may be other than the rope L, and for example, a metal wire or the like may be employed.

  On the other hand, as an example of a specific configuration of the small connector component 11, as shown in FIGS. 2 and 3, a structure in which the plug frame 17 and the knob 18 are removed from the finished connector 10, that is, an optical branching end. The stop ring 12 inserted into the separation tip of the optical cable K drawn from P, the ferrule 14 attached to the stop ring 12 via a spring 13, and the Kevlar S are fixed to the outer periphery of the stop ring 12 A caulking ring 15 fitted to the stop ring 12 and a boot 16 covering the outer side of the caulking ring 15 are generally configured. As described above, the connector mounting portion 2 of the cap device 1 is fitted to the distal end side of the stop ring 12. I can do it.

Next, an example of an optical cable wiring method in the best mode configured as described above will be described.
First, a small connector component 11 that does not include the plug frame 17 and the knob 18 is provided. Therefore, by attaching a ferrule 14 to the stop ring 12 in the connector part 11 inserted into the optical fiber separation end P from the optical fiber separation end P via a spring 13, the optical cable Kevlar S is exposed to the ferrule 14. The optical fiber o in the state is inserted and fixed.

  Then, the Kevlar S is arranged on the outer peripheral side of the stop ring 12 and fixed so as to sandwich the Kevlar S by the caulking ring 15 fitted to the stop ring 12, and then the outer side of the caulking ring 15 is covered and fixed by the boot 16. (See FIG. 3).

  The connector mounting portion 2 of the cap device 1 is fitted and fixed to the stop ring 12 in the small connector component 11 formed in this way by the fixing means 5. At this time, as shown in FIG. 2, the fixing means 5 sets the male screw portion 5 b of the protrusion 6 of the stop ring 12 to the opening of the cap device 1 after the ferrule 14 is inserted into the hole 2 a of the cap device 1. The cap device 1 is fixed to the connector component 11 by screwing into the female screw portion 5a at the end 2b.

  Then, as shown in FIG. 4 (a), the hook portion 3 of the cap device 1 is hooked with a rope L as a traction tool that has been previously passed through the wiring conduit Q, and then pulled. Thus, the optical cable K may be passed through the wiring conduit Q.

  At this time, even if the stop ring 12 is pulled by the cap device 1, the optical fiber o of the optical cable K and the ferrule 14 and the coil spring 13 inserted and held around the optical cable K are pulled by each other by the pulling force. There is no adverse effect on the coupling force between the small connector part 11 and the optical cable K.

  After passing the optical cable K into the wiring pipeline Q, the cap device 1 is removed from the stop ring 12 of the connector part 11, and a plug frame 17 and a knob 18 are attached to the front end side of the ferrule 14 as shown in FIG. Thus, the finished connector 10 is obtained.

  Next, in a state where the cover plate 25 is once removed from the outlet box 21 disposed on the wall surface inside the building, as shown in FIG. After the connector 10 of the finished product connected to the optical cable K drawn into the wall surface is inserted into the connection adapter 24 provided in the outlet box 21, the cover plate 25 is covered from the front side, thereby covering the optical outlet. 26 is formed.

  Thus, the optical fiber wiring work can be performed quickly and smoothly without any damage repair work by passing through the wiring conduit and then attaching the plug frame 17 and knob 18 parts. It can be done. Then, as shown in FIG. 4C, for example, a mating connector 23 from a personal computer 22 or the like is connected to the mating terminal of the connection adapter 24 of the optical outlet 26.

BRIEF DESCRIPTION OF THE DRAWINGS The cap apparatus in the best form for implementing this invention is shown, (a) is a top view, (b) is a side view. Similarly, a state where the cap device is attached to the connector part is shown, (a) is a partially cutaway sectional view, (b) is a sectional view taken along line AA in (a), and (c) is a sectional view taken along line BB in (a). It is. An example of the connector structure of a finished product is shown, (a) is a plan view, (b) is a partially cutaway sectional view, and (c) is a front view. The procedure of the optical cable wiring method which connects an optical cable in a pipe line using the cap apparatus which concerns on this invention is shown, (a) is in a pipeline for wiring via the cap apparatus attached to the connector component. (B) is a partially cutaway cross-sectional view showing the state of optical fiber wiring after passing through the conduit, and (c) is a mating connector from a personal computer or the like to the connection adapter. It is a partially notched sectional view of the inserted state.

P Optical branch end Q Wiring conduit S Kevlar K Optical cable L Rope o Optical fiber 1 Cap device 2 Connector mounting portion 2a Hole portion 2b Open end portion 3 Hook portion 4 Arm portion 5 Fixing means 5a Female screw portion 5b Male screw portion 6 Protrusion 10 Finished connector 11 Connector part 12 Stop ring 13 Spring 14 Ferrule 15 Caulking ring 16 Boot 17 Plug frame 18 Knob 21 Outlet box 22 Personal computer 23 Mating connector 24 Connection adapter 25 Cover plate 26 Optical outlet

Claims (4)

A connector part with a structure in which a plug frame and a knob are removed from a finished connector, and a ferrule is attached to a stop ring via a spring, and an optical cable kevlar is fixed to the stop ring using caulking. A cable connector pulling cap device for pulling the connector component , wherein the cap device is inserted into the narrow hole portion, and the stop is provided at the wide cylindrical portion on the rear side of the hole portion. A connector mounting part that is detachably fitted and fixed to the ring via a fixing means, and a hook part for hooking a towing tool that is passed through the wiring pipe line are connected via a flexible arm part. A cable connector pulling cap device comprising a single member and a single member .   The cable connector pulling cap device according to claim 1, wherein the fixing means is a screw-in type.   3. The cable connector pulling cap device according to claim 1, wherein the length of the arm portion is substantially the same as or slightly longer than the length of the connector mounting portion. A connector part with a structure in which a plug frame and a knob are removed from a finished connector, and a ferrule is attached to a stop ring via a spring, and an optical cable kevlar is fixed to the stop ring using caulking. A connector mounting portion to be fixed to the stop ring of the connector component and a hook portion for hooking a towing tool passed through the wiring conduit are connected via a flexible arm portion. In a state where a ferrule is inserted into a narrow hole portion of the connector mounting portion of the cap device constituted by a single member, a wide cylindrical portion on the rear side of the hole portion is fixed to the stop ring via a fixing means. removably to fit fixed Te, the hook portion of the cap device to draw it by hooking the towing tool that Tsusen the wiring duct After Tsusen optical cables in the wiring conduit by Mukoto, remove the cap device from stop ring of the connector part, the plug frame to the connector parts, by assembling knob and finished products of the connector is provided with this outlet box An optical cable passing method using the cable connector pulling cap device according to any one of claims 1 to 3, wherein the optical connector is attached to a connection adapter .

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