JPS63141008A - Conversion module incorporating type optical plug socket - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an optical outlet used in an optical communication system, and more particularly to an optical outlet with a built-in conversion module used in a wiring network constructed indoors. .

[Conventional technology and its problems]

As optical communication systems that use optical fibers as communication paths become more widespread, it has become necessary to construct a wiring network indoors.

In such cases, conventional technology has adopted methods of directly wiring optical fibers to various devices, but when changing the layout of the equipment or expanding the system, there is a problem in that there is a lack of flexibility in changing the wiring. There is.

On the other hand, examples of conventionally known indoor wiring include electrical wiring for AC power supplies and communication wiring for telephones, and in these cases, outlets and rosettes are used to cope with changes in wiring. Therefore, it is conceivable to use wiring equipment similar to these in the case of optical communication as well.

However, if electrical wiring outlets or telephone communication wiring rosettes are used in the optical communication wiring network, the following problems arise.

(2) Since the permissible bending radius of an optical fiber is 20 to 50 m, it is difficult to fit the optical fiber into a wall-embedded outlet box with the correct length.

■ The optical connector installation work requires extra length of optical fiber, and after the work is completed, there is no space available to accommodate the extra length.

■ It is difficult to fix the optical connector to the outlet box easily and without taking up space.

■ It is difficult to take measures against the tension that acts on optical fibers.

(2) In optical communications, depending on the use and purpose, it may be necessary to incorporate into the outlet an active element or circuit that not only transmits optical signals but also mutually converts optical signals and electrical signals.

This invention uses components of the same standard as electrical wiring sockets that have been widely used in the past, especially sockets embedded in walls, etc., and also solves the problems specific to optical fiber cables or optical communications. The purpose is to provide an electrical outlet.

[Means for solving problems]

In order to achieve the above object, the present invention forms an optical fiber cable lead-in part in an outlet box with an open front, installs an optical fiber cable fixture in the box, and attaches a mounting frame to the open surface of the box. At the same time, the photoelectric conversion module is attached to the mounting frame, and its tip connector portion is exposed to the open surface of the outlet box.

〔Example〕

The embodiment shown in the drawing is an outlet for AC wiring. jH
There is a power outlet. This outlet consists of an outlet box 1 similar to those used for ordinary electrical wiring outlets, a cover frame 2 attached to the open surface of the outlet box, a mounting frame 3.3' attached to the front of the cover frame 2, and these. It has a front plate 4 that covers the front surface.

The illustrated outlet box 1 is of a type in which two mounting frames 3 and 3' are installed in parallel, and the front is open.
Cable lead-in portions 5 are formed on the rear wall, earth wall, and both side walls. This cable lead-in portion 5 is formed by a cut groove that is formed into a circular shape as a whole, leaving a partial connecting portion, and a hole is made by cutting out the connecting portion. Among these, in order to draw in the optical fiber cable, the drawing part 5 on the upper wall is used. Incidentally, on two sides of the open surface of the outlet box 1, a mounting piece 6 is provided to protrude inwardly, and a screw hole 7 is formed in the mounting piece 6.

A cable fixture 9 is housed inside the outlet box 1 described above. The cable fixing device 9 is formed into a U-shape in plan, and includes a rectangular rear frame portion 10 along the rear wall of the outlet box 1 and a rectangular side frame portion 11 along both side walls. The rear frame portion 10 is substantially aligned with the center axis of the retracting portion 5, and two grooves 12 are formed in the upper edge of the rear frame portion 10 in the vertical direction. A cable holder 13 is detachably provided and constitutes a fixing part for the optical fiber cable 14 and the cable body 15 (see FIG. 4). Further, a tension member presser 16 is removably provided on the front surface of the lower edge of the rear frame portion 10, so that the tension member 17 (
(see Fig. 4). Above 6 presser foot 13.1
A small protrusion for preventing slippage may be provided on either or both of the inner surfaces of one or both of the inner surfaces and the rear frame portion 10 facing thereto.

Furthermore, mounting portions 18 that protrude to both sides are formed at the front end edges of both side frame portions 11 of the fixture 9.

Mounting holes 19 are formed on both sides of the cover frame 2, and the mounting holes 190 overlap the mounting portions 18 of the fixture 9, and both are integrally screwed to the mounting pieces 6 of the outlet box 1. Mounting holes 19 are provided on the left and right sides of the upper and lower sides of the inner periphery of the cover frame 2, respectively, and the mounting frame 3 is screwed into the pair of upper and lower mounting holes 19'.

The mounting frame 3 has several protrusions 20 vertically formed on its inner side that face left and right, and a U-shaped hole 21 is provided on the side of one of the protrusions 20, so that the person 21 can insert the tip of a screwdriver or the like. By prying the protrusion 20 toward the opposing protrusion 20, the protrusion 20 is deformed so that the distance between the protrusions 20 becomes closer.

As shown in FIG.
4. An electrical connector 25 is provided on the front, and an O-E converter consisting of a photo-electric conversion element or circuit and an electrical connector are provided inside.
It incorporates an E-0 conversion section consisting of a filling element or a circuit.

Grooves 2 are provided on both sides of the casing 23 of the conversion module 22.
6 is formed, and the lowermost protrusion 20 of the mounting frame 3 is engaged with this for installation.

In addition, the projection 20 at the top of the mounting frame 3 has a conventionally known AC
A power outlet terminal 27 (see FIG. 10) is attached. In addition, the same conversion module 22 and A
Another mounting frame 3' to which a C power outlet terminal 27 is attached is installed in parallel with the mounting frame 3.

Further, a front plate 4 is attached to the front surface of each of the above-mentioned mounting frames 3, 3'. This front plate 4 is formed with a hole 28 through which the tip of the conversion module 22 and the tip of the AC power outlet terminal 27 are partially exposed.

The configuration of the embodiment is as described above, and how to use it will now be explained based on FIGS. 2 to 10.

As shown in FIG. 2, a hole is made in the lead-in part 5 of the upper wall of the outlet box 1, and the electrical conduit 29 is fixed in the hole, and the outlet box 1 is fixed in a recess in the wall surface. The optical fiber cable 14 passes through the above-mentioned conduit 29 to the box 1.
drawn inside. In this case, the tip is pulled out by 1 to 2 m to provide extra length for attaching the optical connector 30 to the tip. However, there is also a method of attaching a ferrule to the optical fiber cord in advance and assembling the optical connector 30 on site. In this case, almost no extra length is required.

The optical connector 30 is installed by stripping off the cable sheath and exposing the cord 31, and after completion, a protective tape 32 is wrapped around the cord 31 except for the tip (1) (see FIG. 3).

Next, as shown in FIG. 4, the optical fiber cable main body 1
5 by the cable retainer 13 of the fixture 9, and its tension member 17 by the tension member retainer 16.
They are fixed to the upper and lower edges of the rear frame portion 10, respectively. The purpose of the cable holder 13 is to determine the fixing position and direction of the optical fiber cable 14, and the fixing position is set at the conduit 2.
It is set on the center axis of 9 or a little further back to take up a lot of front space. optical fiber cable 14
This is done by the tension member presser 16, so that the optical fiber cable 14 will not move even if it is pulled or pushed out.

The optical fiber cable 14 is fixed so as to leave a length that allows the optical connector 30 to be comfortably connected to the conversion module 22 attached to the lowermost protrusion 20 of the mounting frame 3.3' as described later.

Is the optical fiber cable 14 connected in the above state? ii ′la
While pushing it back into the tube 2S, the solid foot odor 9 is accommodated in the outlet box 1 as shown in FIG.

Next, as shown in FIG. 6, a rectangular cover frame 2 is applied and fixed to the outlet box 1 together with the fixture 9.
Furthermore, one mounting frame 3 is attached to the front surface of the cover frame 2 (see FIG. 7).

Next, the tip of the conversion module 22 is inserted from inside the mounting frame 3 as shown in FIG. The optical connector 30 of the cable 14 is inserted into the optical connector 24 of the conversion module 22.

Next, although not shown, attach the conversion module to another mounting frame 3' on the right half of the outlet box 1, insert the optical connector, and also pull in the electrical wiring to the top protrusion 20 for ACta. Attach the outlet terminal 27. Thereafter, the front plate 4 is screwed onto the mounting frame 3.3', resulting in the completed state shown in FIG. 1O.

Although the above embodiment shows a type that uses two mounting frames 3.3', it is also possible to use one mounting frame, and the wiring used in combination is the electrical wiring for AC power supply. , telephone communication wiring, or other communication wiring.

In addition, in the above embodiment, the outlet box 1 is embedded in the wall or pillar as a front embankment, but if the wall or pillar is a board, the cover frame 2 is not used and the front wall of the outlet box 1 is In some cases, a hole corresponding to the hole 28 of the front plate 4 is made in the board, a mounting frame 3.3' is screwed to the back side of the hole, and the front plate 4 is further placed over the board surface.

Furthermore, the conversion module 22 has several variations depending on the power supply method and signal bypass method.

That is, the operation of the conversion module 22 requires the supply of power, which can be supplied from the outside via the electrical connector 25 (external supply method) or via the optical fiber cable 1.
There is a method in which a power supply line is combined with the power supply line 4, or a separate power supply line is provided and connected to the conversion module 22 (internal supply method). The former method does not function at all unless power is supplied from the outside, but it has the advantage of being able to operate only when necessary. The latter method requires a terminal for connecting the power supply line to the conversion module 22.

The internal structure of the conversion module 22 described above, as shown in FIG. An electrical connector 25 is connected to the electrical signal side. 0
A bypass circuit 38 is provided at the output side of the -E conversion section 35 and the input end of the E-0 conversion section 36 via an electronic changeover switch 37, and a control section 39 for switching the bypass circuit 38 is provided. A control signal for the control unit 39 is input from the outside via the electrical connector 24.

In the case shown, if the control signal is not input, the bypass circuit 3
8 is formed, but when a control signal is input, the switch 37
When switched, the optical signal is converted into an electrical signal in the O-E converter 35 and outputted via the electrical connector, and the electrical signal is converted into an optical signal in the E-0 converter 36 and outputted via the optical connector. be done.

In addition, 40 in the figure indicates each connector 24 of the conversion module 22.
．． This is a power terminal provided in a portion other than 25.

〔Effect of the invention〕

The effects of this invention are listed below.

■ Commercially available parts such as outlet boxes and mounting frames can be used as is, making the transition from electrical wiring to optical wiring smooth. In addition, since parts can be shared, costs can be reduced and it can be used in conjunction with electrical wiring or other communication wiring outlets.

(2) Since a fixing device is provided to fix the optical fiber cable body and the tension member, the position of the cable body is stabilized and sufficient tensile strength can be obtained.

■ When assembling an optical outlet involves electrical wiring and 112
This is easy because it can be done using the following method.

(2) By providing a conversion module, it is possible to connect directly to gTl using electrical signals.

■ In addition, as in the embodiment, if the conversion module is attached to the lowest stage of the mounting frame, the length of the optical fiber cord in the outlet box can be increased, and the bending radius can be increased.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the embodiment, FIGS. 2 to 9 are perspective views showing an example of the assembly process, and FIG. 10 is a diagram of the internal connection structure of the conversion module. 1...Outlet box, 2...Cover frame, 3.3'...Mounting frame, 4...
Front plate, 5... Cable entry section, 9...
・Fixing tool, 12... Concave groove, 13... Cable holder, 14... Optical fiber cable, 1
5... Cable body, 16... Tension member holder, 17... Tension member,
20...Protrusion, 22...Conversion module, 23...Casing, 24...Optical connector, 25...Electrical connector, 26・・・
... Groove, 27 ... Outlet terminal, 35.
...0-E converter, 36...E-0 converter. Patent applicant Sumitomo Electric Industries, Ltd. Agent Kama 1) Text 2 Figure 3 Figure 5

Claims (7)

[Claims] (1) Form an optical fiber cable lead-in part in an outlet box with an open front, install an optical fiber cable fixture inside the box, attach a mounting frame to the open surface of the box, and attach the photoelectric conversion to the mounting frame. An optical outlet with a built-in conversion module, in which a module is attached and the tip connector part is exposed on the open surface of the outlet box. (2) The above-mentioned fixing device has fixing parts for an optical fiber cable main body and a tension member of the cable, and the former fixing part is located on or behind the central axis of the lead-in part. An optical outlet with a built-in conversion module as described in Scope 1. (3) An optical outlet with a built-in conversion module according to claim 1 or 2, wherein grooves are formed on both sides of the photoelectric conversion module to engage with projections of the mounting frame. (4) The optical connector of the photoelectric conversion module is arranged to face the optical fiber cable lead-in part, and the electrical connector is arranged on the open side of the outlet box. Optical outlet with built-in conversion module as described. (5) An optical outlet with a built-in conversion module according to claim 1 or 2, wherein the power terminal of the photoelectric conversion module is provided in an electrical connector. (6) An optical outlet with a built-in conversion module according to claim 1 or 2, wherein the photoelectric conversion module is provided in a portion of the module other than the connector portion. (7) The above-mentioned photoelectric conversion module has a photoelectric conversion section and an electro-optical conversion section, and connects the optical signal side of these to an optical connector, and connects the electrical signal side of these to an electrical connector. An optical outlet with a built-in conversion module according to claim 1 or 2, comprising a bypass circuit that is turned on and off by a changeover switch between the electric signal side and the electric connector, and a switching control section thereof.