JPH05232328A - Optical fiber store board of optical communication device - Google Patents

Abstract

PURPOSE:To provide the optical fiber store board wherein optical fibers can orderly be put by optical units corresponding to the number of added optical fibers for the optical communication device which is constituted by putting plural plug-in optical units in shelves in parallel. CONSTITUTION:In subshelves 9 with a guide rail which are installed above the shelves 4, metallic stoppers 21 for locking optical fiber connectors which are guided onto the surface of stored plates and holders 14 for the formation of excessive-length parts 13 of the optical fibers are installed. Further, interlocking members 17 which can engage coupling members 16 mounted atop of the optical units elastically and detachably are fitted atop of the plates; and both the members 16 and 17 are engaged when necessary, so that the optical units 2 can be inserted into and extracted from the shelves 4 integrally with the plates.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber housing for introducing an optical fiber into an optical communication apparatus constructed by housing a plurality of plug-in optical units having optical component modules arranged in parallel in a shelf. Regarding the board.

[0002]

2. Description of the Related Art FIG. 6 schematically shows the structure of a conventional device of this type. The plurality of optical units 42 each having the optical component module 41 mounted therein are accommodated in a shelf 44 attached to a frame 43 in parallel along a rail 45. Optical fiber 4
6 is drawn into the optical fiber storage board 47 installed above the shelf 44 from the side surface side, and the extra length portion 50 is drawn on the board.
After being formed, it is drawn out to the front side and introduced / connected to the inside of the optical unit 42.

[0003]

Optical fibers, which have been conventionally used mainly for connection within a central office and between respective central offices, have recently begun to be used for connection between the central office and each subscriber. The number of optical fibers introduced into an optical communication device tends to increase rapidly. For this reason, the excess length portion 50 of the optical fiber is placed on the storage board 47 in an overlapping state, and the risk of accidents such as erroneous connection and disconnection of cables increases.

The present invention solves the problems of the prior art and provides an optical fiber storage board that can store optical fibers in each optical unit in an orderly manner in response to the increased number of optical fibers. With the goal.

[0005]

This object is constituted by accommodating a plurality of optical units, each of which is composed of a printed board on which an electronic component including an optical component module is mounted, in a shelf so that they can be inserted and removed in parallel in a vertical posture. In an optical communication device, an optical fiber storage board for introducing an optical fiber into each of the optical units, each in a sub-shelf with a guide tray installed above the shelf in which each optical unit is stored. It is composed of plates that are accommodated in parallel in a vertical posture so as to be insertable and removable in correspondence with the position of the optical unit, and for locking the optical connector mounted on the tip of the optical fiber to be introduced on the surface of the plate. A stopper and a holder for forming an extra length of the optical fiber are installed, and the tip of the plate is elastically attached to a connecting member attached to the tip of the optical unit. An optical fiber storage characterized in that an interlocking member that can be freely engaged is attached, and the optical unit is integrated with the plate and can be inserted into and removed from the shelf by engaging both members as necessary. Achieved by the board.

[0006]

According to each optical unit housed in the shelf, an optical fiber housing board is housed in a sub-shelf installed above the shelf. The optical fiber introduced into the guide tray from the side is wrapped around the holder of the optical fiber storage board accommodated in the sub-shelf corresponding to each optical unit to form the extra length portion, and is attached to the tip of the extra length portion. The optical connector is locked and fixed to the stopper.
Next, the optical connector is removed from the stopper and the optical component module of the optical unit is connected. In this way, the optical fibers are arranged in order on the optical fiber storage board for each optical unit, so that erroneous connection does not occur.

Further, the corresponding optical unit and the optical fiber storage board are detachably fixed to each other by the connecting member and the interlocking member, and the both can be inserted and removed as a unit to efficiently work at the time of maintenance and inspection. It can be performed. Less than,
The invention will be described in more detail on the basis of the preferred embodiments shown in the drawings.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the configuration of an electronic device equipped with the optical fiber storage board of the present invention. Similar to the conventional electronic device described with reference to FIG. 6, a plurality of optical units 2 having the optical component module 1 mounted therein are arranged in parallel in a vertical posture along a rail 5 on a shelf 4 attached to a frame 3. It's The optical component module 1 is connected to an optical adapter 7 on the optical unit via a connection cable 6.

A sub-shelf 9 having a rail 8 is installed as an extension of the shelf 8 directly above the shelf 4, and an optical fiber storage board 20 corresponding to each optical unit 2 is vertically installed along the rail 8. It is housed in parallel. Further, a guide tray 10 is provided above the front side of the sub-shelf 9 to draw the optical fiber into each optical fiber storage board 20.

The optical fiber storage board 20 is composed of a rectangular plate, and a stopper 21 for locking the optical connector 11 mounted on the tip of the optical fiber is provided on the surface thereof.
And the optical fiber 12 introduced into the optical fiber storage board 20.
A plurality of holders 14 for forming the extra length portion 13 are installed. As shown in FIG. 2, a connecting member 16 is provided on the upper surface of the front plate 15 attached to the front edge of each optical unit 2. Correspondingly, a connecting member 16 is provided at the lower corner of the front edge of the optical fiber storage board. A member 17 is provided.

The optical fiber storage board 2 thus constructed
The operation of 0 will be described. As shown in FIG. 3, the optical fiber storage board 20 is pulled out from the sub-shelf 9 and is kept in a state where it does not fall out of the sub-shelf 9 by the action of the stopper 18. The optical fiber 12 is guided from the side surface of the guide tray 10 to the front side of the sub-shelf 9, and is introduced into the corresponding optical fiber storage board 20 from the slit 10 a on the front surface of the guide tray 10. Then, after being loosely wound around the holder 14 to form the extra length portion 13, the optical connector 11 mounted at the tip is held and fixed to the stopper fitting 21.
In this state, the optical fiber storage board 20 is inserted into the sub-shelf 9 and stands by until it is connected to the optical unit 2.

The optical fiber storage board 20 thus prepared
In order to connect the optical fiber 12 in the inside to the optical unit 2, after the corresponding optical unit 2 is mounted on the shelf 4 as shown in FIG. 4, it is held by the stopper 21 of the optical fiber storage board 20. The existing optical connector 11 may be removed and connected to the optical adapter 7 on the optical unit 2. After that, when the optical unit 2 is inserted into the shelf 4, as shown in FIG. 5A, the connecting member 16 of the front plate 15 abuts the interlocking member 17 on the optical fiber storage board 20 side, and the optical fiber is closed. The storage board 20 is pushed into the sub-shelf 9. At the same time when the optical fiber storage board 20 is completely inserted into the sub-shelf 9, as shown in FIG. 5B, the connecting member 16 elastically deforms the interlocking member 17 upward so that the interlocking member 17 is engaged with the recess 16a. Combine and connect both. Accordingly, when the optical unit 2 is pulled out from the shelf 4 for maintenance / inspection, the optical fiber storage board 20 is also pulled out from the sub-shelf 9 at the same time, which saves labor. In order to release the engagement between the two, as shown in FIG. 5C, when the optical unit 2 is pulled out, the interlocking member 17 may be deformed upward with a finger and separated from each other.

[0013]

As described above, according to the present invention, since the optical fiber storage board is installed for each optical unit and accommodated in the sub-shelf above the shelf, the optical fiber introduced into the optical unit is installed. Are stored in an orderly manner, which facilitates connection work and prevents erroneous connection. As a result, it becomes possible to prepare the extra length of the optical fiber in advance for the expansion of the optical unit, thus improving the work efficiency. Further, the optical unit and the optical fiber storage board corresponding to the optical unit can be inserted and removed at the same time, which facilitates the maintenance work. Of course, it is also possible to insert or remove only one of them if necessary.

[Brief description of drawings]

FIG. 1 is a perspective view of an optical communication device including an optical fiber storage board according to the present invention.

FIG. 2 is a perspective view showing a configuration of a connecting member and an interlocking member.

FIG. 3 is a side view showing the introduction of an optical fiber into an optical fiber storage board. It is a figure.

FIG. 4 is a side view showing the connection from the optical fiber storage board to the optical unit.

5 (a) to (c) are partially enlarged side views showing a procedure of engaging / disengaging operations of a connecting member and an interlocking member.

FIG. 6 is a perspective view of an optical communication device including a conventional optical fiber storage board.

[Explanation of symbols]

 1 ... Optical component module 2 ... Optical unit 3 ... Frame 4 ... Shelf 5 ... Rail 6 ... Connection cable 7 ... Optical adapter 8 ... Rail 9 ... Sub-shelf 10 ... Guide tray 11 ... Optical connector 12 ... Optical fiber 13 ... Extra length Part 14 ... Holder 15 ... Front plate 16 ... Connecting member 17 ... Interlocking member 18 ... Stopper 20 ... Optical fiber storage board 21 ... Stopper

Claims (1)

[Claims] 1. A plurality of optical units (2) made of a printed circuit board on which electronic components including an optical component module (1) are mounted are arranged in a shelf (4) so that they can be inserted and removed in parallel in a vertical posture. In the optical communication device, an optical fiber storage board (20) for introducing an optical fiber (12) into each of the optical units (2), the shelf (4) containing each of the optical units (2) is provided. ), Which is a sub-shelf (9) with a guide tray (10) installed in parallel with the optical unit in a vertical posture so that the plates can be inserted and removed in parallel, and the surface of the plate A stopper (2) for locking the optical connector (11) attached to the tip of the optical fiber to be introduced is provided above.
1) and a holder (1) for forming an extra length portion (13) of the optical fiber
4) is installed, and further, an interlocking member (17) which is elastically and detachably engageable with the connecting member (16) attached to the end of the optical unit is attached to the end of the plate. , An optical fiber storage characterized in that the optical unit (2) is integrated with the plate by engaging the both members (16, 17) with each other as required, and can be inserted into and removed from the shelf (4). Board.