JP2002258062A - Optical subscriber's lin terminating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a preceding wiring of an optical fiber performable before installing a device main body side casing by installing an optical fiber slack part storing tray on the wall side and also to make usable the device main body side casing by detaching it from the optical fiber slack part storing tray in the case of being used on a desk. SOLUTION: This optical subscriber's line terminating device is composed by providing the device main body side casing 2 which stores an optical subscriber's line terminating device and the optical fiber part storing tray 1 which stores the slack part 10a of the optical fiber 10 connecting the optical subscriber's line terminating device to an optical communication station side. The optical fiber slack part storing tray 1 is detachably attached to the outside surface of the bottom plate part 2a of the device main body side casing 2, and a wall hanging structure 5 is provided in the optical fiber slack part storing tray 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical network unit for performing an optical communication connection between an optical communication station and a subscriber optical communication device.

[0002]

2. Description of the Related Art Conventionally, this type of optical network unit is disclosed in, for example, Japanese Utility Model Laid-Open No. 5-4106, and FIG.
As shown in FIG. 1 and FIG. 11, an optical subscriber unit including a main board b, an Ethernet card c, a power supply device j, or the like, and an optical line terminal d in an apparatus main body side housing a formed in a case shape. The optical fiber extra length accommodation tray g that accommodates the extra length of the optical fiber f that connects the external line termination device d and the optical communication station side via the optical plug e is accommodated and mounted, and is covered with a main body side lid (not shown). It consists of. In addition, the optical network unit having the above-described configuration, an apparatus body side housing a
Has a wall-hung structure comprising a hook portion h and a mounting hole portion i on the rear side of the hook. The hook portion h is hooked on an engaging portion of a wall-mounting fixture (not shown) installed on the wall side, and the mounting hole The mounting screw inserted into the part i was screwed to the wall mounting bracket, and was installed on the wall.

[0003]

However, in the conventional optical network unit, the extra length of the optical fiber accommodating the extra length of the optical fiber e together with the optical network unit d in the apparatus main body side a. Since the storage tray g is configured to be housed and mounted, the optical cable f is laid after the apparatus main body side housing a is installed on the wall, and the advance wiring of only the optical fiber f cannot be performed. In addition, when used on a desk, although the extra length of the optical fiber f is not necessary, the optical fiber f must be used with the extra fiber length accommodation tray g installed.
This has been a factor in increasing the overall size of the apparatus.

In view of the above, the present invention makes it possible to install an optical fiber extra length storage tray on the wall side, thereby enabling advance wiring of optical fibers before installing the apparatus body side housing. It is an object of the present invention to provide an optical network unit that is configured to be able to be used by removing an apparatus main body side housing from an optical fiber extra length storage tray when used on a desk.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a method of connecting an optical line terminal equipment and an optical communication station between an apparatus main body housing housing an optical line terminal equipment. An optical fiber line termination device comprising an optical fiber extra length accommodation tray for accommodating an extra length of an optical fiber to be connected, wherein the optical fiber extra length accommodation device is provided on an outer surface of a bottom plate portion of the device body side housing. The tray is detachably mounted.

According to the present invention, the tray for storing the extra length of optical fiber is mounted on the outer surface of the casing on the side of the apparatus main body. Optical fiber can be pre-wired. In addition, when using the device body side housing that accommodates the optical transmission termination device on a desk, an optical fiber having no extra length may be connected to the optical transmission termination device,
In this case, the optical fiber extra length storage tray is removed from the apparatus main body side housing and used, and the unnecessary optical fiber extra length storage tray is eliminated, and the device size can be reduced.

Further, the present invention is characterized in that the apparatus main body side housing and the optical fiber extra length storage tray are configured to be assembled by an engaging structure, and are easily operated by engaging and disengaging the engaging structure. In addition, the apparatus body side housing and the optical fiber extra length storage tray can be detachably configured.

Further, the present invention is characterized in that a wall-hung structure is applied to the optical fiber extra length storage tray, and the optical fiber extra length accommodation tray is installed on a wall or the like before the apparatus body side housing is attached. In this way, advance wiring of optical fibers is possible.

Further, according to the present invention, a part of the extra-fiber-length accommodation tray in the extra-fiber-length accommodation tray can be covered by the apparatus body-side housing, and the remaining part can be removed from the extra-fiber-length accommodation tray. The optical fiber can be connected to the optical transmission terminating device in a state where the tray-side lid is removed from the extra-fiber-length storage tray.

The present invention is characterized in that a storage tray portion for storing one end of an optical fiber before being connected to an optical transmission terminating device is formed on the tray-side cover, and an optical fiber extra length storage tray is provided. When the optical fiber is pre-wired by installing it on a wall or the like, one end of the optical fiber to be connected to the optical transmission terminating equipment can be housed in the tray side lid and kept compact, and the optical fiber extra length tray During installation on a wall or the like or prior wiring work of an optical fiber, the optical fiber does not fluctuate and is not obstructed.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

First, a schematic configuration of an embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is an overall perspective view illustrating an optical network unit according to an embodiment of the present invention, FIG. 2 is an exploded perspective view illustrating an optical fiber cable with the optical fiber removed, and FIG. FIG. 4 is a perspective view of the apparatus main body side housing removed from the unit storage tray, which is drawn from the back side. FIG. 4 is a perspective view of the apparatus main body side housing also drawn with the front side removed and the optical cable attached. FIG.

Referring to FIGS. 1 and 2, the optical network unit according to the present embodiment comprises a main board, an Ethernet card, a power supply, or the like in a form that partially covers an optical fiber extra length storage tray 1. The apparatus main body-side housing 2 accommodating the optical transmission terminating equipment to be stacked is arranged, and the remaining portion of the optical fiber extra length accommodation tray 1 is covered with a tray-side lid 3.

An optical subscriber terminating device comprising a main board (not shown) or an Ethernet card or the like is built in the housing 2 on the apparatus body side, and a part of the inside of the housing can be opened by the cover 4 on the housing side. Has become.

The bottom plate 2a of the apparatus body side housing 2 includes
In order to mount the apparatus main body side housing 2 on the optical fiber extra length storage tray 1, four hook-shaped engaging recesses 2b are provided.
Are provided with a predetermined gap therebetween, and a locking recess 2c is formed on one end side.

Further, on the upper surface side of the apparatus body side housing 2, a hooking portion 2d and a projecting hooking portion 2e are formed to be engaged with the hooking piece 4a and the pair of hooking projections 4b of the housing side cover 4, respectively. The housing-side cover 4 is attached to the device body-side housing 2 by engaging the hooking projections 4b with the projecting hooking portions 2e while inserting the hooking pieces 4a into the hooking portions 2d. It is configured to cover the opening of the housing 2.

In the tray base portion 1a of the optical fiber extra length storage tray 1, a hooking concave portion 5a is formed in an upper portion thereof, and a mounting hole portion 5b is formed in a lower portion thereof to form a hooking concave portion 5a. Wall mounting structure 5 with mounting holes 5b
Is composed.

A substantially elliptical tray outer wall portion 11 and a substantially circular tray inner wall portion 12 are disposed on the tray base portion 1a of the optical fiber extra length storage tray 1 in a state where they are separated from each other. A unit housing 13 is formed, and the extra-length portion 10a of the optical fiber 10 accommodated in a method described later is formed between the tray outer wall portion 11 and the tray inner wall portion 12.
In order to prevent bending of the optical fiber, a plurality of hooking claws 11a and 12a are formed so as to protrude toward the optical fiber extra length accommodation portion 13 side.

Further, a hook-shaped engaging piece 14 is formed on the base portion 1a of the optical fiber extra length tray 1 so as to protrude outwardly and engages with the engaging concave portion 2b on the apparatus body side housing 2 side. In addition, a locking piece 15 that is locked in the locking recess 2c is formed, and the hook-shaped engaging piece 4 is moved while sliding the apparatus main body side housing 2 with respect to the optical fiber extra length accommodation tray 1. By engaging with the engaging concave portion 2b and locking the locking piece 15 with the locking portion 2c, the apparatus main body side housing 2 is removably mounted on the optical fiber extra length accommodation tray 1. .

As a result, the bottom plate 2a of the apparatus body side housing 2 is formed.
The optical fiber extra length storage tray 1 is placed on the outer surface of the optical fiber stack, and the front surface of the optical fiber extra length storage tray 1 is covered by the apparatus body side housing 2 but is not covered. A part is covered by the tray side lid 3.

Therefore, on both side walls of the tray side lid 3,
A U-shaped engaging portion 3a is formed, and the U-shaped engaging portion 3a is formed.
a of the optical fiber extra-long part storage tray 1 is protruded from both side walls of the optical fiber extra length storage tray 1. The body 3 is mounted on the optical fiber extra length storage tray 1, and the front portion of the optical fiber extra length storage tray 1 that is not covered by the apparatus main body side housing 2 is covered.

The optical fiber 10 is, as shown in FIG.
The optical connector 20 is connected to one end, and the other end is connected to the optical communication station via another optical fiber or the like.

In order to attach the optical fiber 10 to the extra-fiber-length storage tray 1, the optical fiber 10 is first drawn in from the take-out port 1b of the extra-fiber-extension storage tray 1, and the extra length 10a of the optical fiber 10 is moved to the extra-fiber-extension storage portion. 13 is wound and stored. The fiber length is determined by matching the tip end of the optical connector 20 with the mounting guide line 17 drawn on one side of the optical fiber extra length storage tray 1.

As shown in FIG. 6, one end of the optical fiber 10 hangs down from the optical fiber extra length storage tray 1 together with the other end, as shown in FIG. Along with the optical connector 20, the apparatus main body-side housing 2 can be accommodated in the accommodation tray 21 formed by attaching the tray-side lid 3 to the optical fiber extra-length part accommodation tray 1 before the attachment. When the receiving tray 1 is installed on a wall or the like and the optical fibers 10 are pre-wired, the optical fiber 10 can be compactly assembled. , Optical fiber 10
It won't hinder you from wobbling.

When the optical fiber extra length storage tray 1 is installed on a wall or the like and the optical fibers 10 are to be pre-wired, the tray cover 3 is removed and the hooking recess 5a is set in the wall as shown in FIG. After hooking on the screws installed at 30 etc.,
The other end of the optical fiber 10 is wired in advance and connected to an optical fiber (not shown) on the optical communication station side.

Next, as shown in FIG. 8, the apparatus main body side housing 2 is mounted on the optical fiber extra length accommodation tray 1, and the housing side cover 4 and the tray side lid 3 are mounted by the above-described method. The optical network unit according to the present embodiment can be mounted on the wall 30 or the like.

When the apparatus main body side housing 2 is used on a desk or the like, as shown in FIG. 9, the optical fiber extra length accommodation tray 1 is used without being attached.

[0029]

As described above, according to the present invention,
Since the optical fiber extra length storage tray is mounted on the outer surface of the apparatus main body side housing, the apparatus main body housing or the optical fiber extra length accommodation tray can be removed and installed on a wall or the like so that the optical fibers can be pre-wired. . In addition, when the device body housing housing the optical transmission terminating equipment is used on a desk, an optical fiber having no extra length may be connected to the optical transmission terminating equipment. The optical fiber extra length storage tray is removed and used, and unnecessary optical fiber extra length storage trays are eliminated, and the size of the apparatus can be reduced.

[Brief description of the drawings]

FIG. 1 is an overall perspective view illustrating an optical network unit employing an embodiment of the present invention.

FIG. 2 is an exploded perspective view illustrating a state where an optical fiber is removed.

FIG. 3 is a perspective view of the apparatus body-side housing in a state where it is removed from the optical fiber extra length storage tray and an optical cable is attached, which is drawn from the back side.

FIG. 4 is a perspective view illustrating the front side of the device body side housing with the housing side cover removed.

FIG. 5 is a plan view of an optical fiber extra length storage tray for explaining a case where an optical fiber is mounted.

FIG. 6 is a plan view of the extra-fiber-length storing tray showing the state where the optical fiber is mounted.

FIG. 7 is a plan view of the optical fiber extra length storage tray showing a state where the optical fiber and the tray side lid are also attached.

FIG. 8 is a side view showing a state where the optical network unit employing the embodiment of the present invention is installed on a wall.

FIG. 9 is a perspective view illustrating the external appearance of the apparatus body side housing with the optical fiber extra length storage tray removed for use on a desk or the like.

FIG. 10 is a plan view depicting a conventional optical network unit.

FIG. 11 is a side view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical fiber extra length accommodation tray 2 Device main body side housing 2a Bottom plate part 2b Engaging concave part 2c Engaging concave part 3 Tray side lid 3a U-shaped engaging part 4 Housing side cover 4a Hook piece 4b Engagement projection 5 Wall hanging structure 5a hook concave portion 5b mounting hole portion 10 optical fiber 10a extra length portion 13 excess optical fiber length accommodation portion 21 accommodation tray portion

Claims (5)

[The claims] 1. An apparatus main body-side housing accommodating an optical line terminal, and an optical fiber extra length accommodating an extra length of an optical fiber connecting between the optical network unit and an optical communication station side. An optical subscriber line termination device comprising a tray, wherein the optical fiber extra length accommodation tray is detachably mounted on an outer surface of a bottom plate portion of the device main body side housing. Optical subscriber line termination. 2. The optical network unit according to claim 1, wherein the apparatus main body side housing and the optical fiber extra length storage tray are configured to be assembled by an engagement structure. 3. The optical network unit according to claim 1, wherein a wall-hung structure is applied to the optical fiber extra length storage tray. 4. A part of the excess optical fiber storage tray on the optical fiber excess storage side is covered by the apparatus body side housing, and the remaining portion can be removed from the optical fiber excess storage tray. 4. The optical network unit according to claim 1, wherein the optical network unit is covered by a tray-side lid mounted on the optical network unit. 5. The optical subscriber line according to claim 4, wherein an accommodation tray section for accommodating one end of the optical fiber before being connected to the optical transmission terminating device is formed on the tray side lid. Terminating device.