JP3112733B2 - Optical fiber storage board in optical communication equipment - Google Patents

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 each having an optical component module in a shelf in parallel. About 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 on which the optical component modules 41 are mounted are housed side by side along rails 45 in a shelf 44 attached to a frame 43. Optical fiber 4
6 is pulled into the optical fiber storage board 47 installed above the shelf 44 from the side, and the extra length 50 is placed on the board.
After being formed, it is drawn out to the front side and introduced and connected inside the optical unit 42.

[0003]

Conventionally, optical fibers which have been mainly used for connection in telephone offices and between telephone offices have recently been used for connection between telephone offices and subscribers. The number of optical fibers introduced into an optical communication device tends to increase rapidly. For this reason, the extra length portion 50 of the optical fiber is placed in an overlapping state on the storage board 47, and the risk of accidents such as erroneous connection and disconnection of the cable increases.

An object of the present invention is to solve such a problem of the prior art and to provide an optical fiber storage board capable of storing optical fibers in order for each optical unit in response to the increased number of optical fibers. With the goal.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to arrange a plurality of optical units formed of a printed circuit board on which electronic components including an optical component module are mounted so as to be inserted in and removed from a shelf in parallel in a vertical posture. In the optical communication device, each of the optical fiber storage boards for introducing optical fibers into each of the optical units is provided in a sub-shelf with a guide tray installed above the shelf in which each optical unit is stored. It consists of a plate accommodated in a vertical position corresponding to the position of the optical unit and which can be inserted and withdrawn in parallel, and on the surface of the plate for locking an optical connector attached to the tip of an optical fiber to be introduced. A stopper and a holder for forming an extra length of the optical fiber are provided, and further, a tip of the plate is elastically attached to a connecting member attached to a tip of the optical unit. An optical fiber housing, wherein an interlocking member that can be freely engaged is attached, and the optical unit is integrated with the plate so that it can be inserted into and extracted from the shelf by engaging both members as necessary. Achieved by the board.

[0006]

An optical fiber storage board is accommodated in a subshelf installed above the shelf corresponding to each optical unit accommodated in the shelf. The optical fiber introduced into the guide tray from the side is wound around the holder of the optical fiber storage board housed in the subshelf corresponding to each optical unit to form an extra length, and attached to the tip The optical connector is locked and fixed to a stopper.
Next, the optical connector is detached from the fastener, and the optical connector is connected to the optical component module of the optical unit. In this way, the optical fibers are orderly arranged 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 a connecting member and an interlocking member, so that the two can be integrally inserted and removed, so that the work can be efficiently performed during maintenance and inspection. It can be performed. Less than,
The present invention will be described in further detail based on preferred embodiments shown in the drawings.

[0008]

FIG. 1 shows an example of the configuration of an electronic apparatus equipped with an optical fiber storage board according to the present invention. As in the conventional electronic device described with reference to FIG. 6, a plurality of optical units 2 on which the optical component modules 1 are mounted are arranged and accommodated in a vertical position along rails 5 on a shelf 4 mounted on a frame 3. Te The optical component module 1 is connected via a connection cable 6 to an optical adapter 7 on the optical unit.

A sub-shelf 9 provided with a rail 8 is installed just above the shelf 4 as an extension thereof, and an optical fiber storage board 20 corresponding to each optical unit 2 is arranged along the rail 8 in a vertical posture. Housed side by side. Further, above the front side of the sub-shelf 9, a guide tray 10 for drawing optical fibers into each optical fiber storage board 20 is provided.

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

The optical fiber storage board 2 constructed as described above.
The operation of 0 will be described. As shown in FIG. 3, the optical fiber storage board 20 is pulled out of the sub-shelf 9, and is kept in a state where it does not fall off from 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 each corresponding optical fiber storage board 20 from the slit 10a 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 attached to the distal end is held and fixed to the stopper 21.
In this state, the optical fiber storage board 20 is inserted into the subshelf 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 inside to the optical unit 2, the corresponding optical unit 2 is mounted on the shelf 4 as shown in FIG. The optical connector 11 may be removed and connected to the optical adapter 7 on the optical unit 2. Thereafter, when the optical unit 2 is inserted into the shelf 4, as shown in FIG. 5 (a), the connecting member 16 of the front plate 15 abuts on the interlocking member 17 of the optical fiber storage board 20 in the middle thereof, The storage board 20 is pushed into the sub shelf 9. At the same time as the optical fiber storage board 20 is completely inserted into the sub-shelf 9, the connecting member 16 elastically deforms the interlocking member 17 upward as shown in FIG. And connect them. Thus, when the optical unit 2 is pulled out from the shelf 4 during maintenance and 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 two may be separated while deforming the interlocking member 17 with a finger.

[0013]

As described above, according to the present invention, the optical fiber storage board is provided for each optical unit and housed in the sub-shelf above the shelf, so that the optical fiber introduced into the optical unit is provided. Are stored in a state where they are neatly sorted, thereby facilitating connection work and preventing erroneous connection. As a result, it becomes possible to prepare an optical fiber by preparing the excess length of the optical fiber in advance in preparation for the expansion of the optical unit, thereby improving the working efficiency. Further, the optical unit and the corresponding optical fiber storage board can be simultaneously inserted and removed, thereby facilitating maintenance work. Of course, it is also possible to insert or remove only one if necessary.

[Brief description of the drawings]

FIG. 1 is a perspective view of an optical communication device provided with an optical fiber storage board of 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 introduction of an optical fiber into an optical fiber storage board. FIG.

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

5 (a) to 5 (c) are partially enlarged side views showing a procedure of an engagement / disengagement operation between 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]

 DESCRIPTION OF SYMBOLS 1 ... Optical component module 2 ... Optical unit 3 ... Frame 4 ... Shelf 5 ... Rail 6 ... Connection cable 7 ... Optical adapter 8 ... Rail 9 ... Subshelf 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)

(57) [Claims] 1. A plurality of optical units (2) each comprising a printed circuit board on which an electronic component including an optical component module (1) is mounted is housed in a shelf (4) in parallel in a vertical posture so as to be insertable and removable. In the optical communication apparatus, an optical fiber storage board (20) for introducing an optical fiber (12) into each of the optical units (2), wherein the shelf (4) in which each optical unit (2) is stored is provided. ) Comprises a plate which is accommodated in a sub-shelf (9) provided with a guide tray (10) and which can be inserted and withdrawn in parallel in a vertical position corresponding to the position of each optical unit. Above is a stopper (2) for locking the optical connector (11) attached to the tip of the optical fiber to be introduced.
1) and a holder (1) for forming the extra length (13) of the optical fiber.
4), and an interlocking member (17) which is resiliently and removably engageable with a connecting member (16) mounted on the front end of the optical unit is attached to the front end of the plate. An optical fiber housing, wherein the optical unit (2) is integrated with the plate by making the members (16, 17) engage with each other as necessary so that the optical unit (2) can be inserted into and removed from the shelf (4). Board.