JP2012078743A - Optical wiring board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mechanism capable of completely protecting extra length parts of a primary side and a secondary side optical cords in an optical wiring board equipped with a slide type splice unit.SOLUTION: A slide type splice unit 5 is supported on a mount angle 2 in a rack. A primary side wiring duct 8 is laid between a stationary part 6 and a movable part 7 of the splice unit 5, and an extra length part of a primary side optical cord C1 is guided. A secondary side wiring duct 9 guiding the extra length part of a secondary side optical cord C2 is laid between the movable part 7 and the mount angle 2. A duct case 11 is installed on the mount angle 2, and a bent part 9a of the secondary side wiring duct 9 is stored to freely go in and out. The duct case 11 is formed so as to spread toward a slide direction of the splice unit 5. A cable clamp 16 for holding an optical cable exposed from the primary side wiring duct 8 and a fusion connection holder 19 for holding a fusion connection part of the optical cable are provided.

Description

  The present invention relates to an optical wiring board in which a slide type splice unit is supported at a mount angle in a rack.

  In this type of optical wiring board, conventionally, a technique is known in which extra length portions of a large number of optical cords are accommodated in a wiring duct and guided. For example, in Patent Document 1, a flexible wiring duct is installed between the fixed portion and the movable portion of the splice unit, and the extra length portion of the primary side optical cord introduced from the rear side of the rack is accommodated in the wiring duct. There is described an optical wiring board configured to bend and stretch a wiring duct as the movable part slides and to protect the primary side optical cord from abrasion and crosstalk.

JP 2005-148327 A

  However, in the conventional optical wiring board, the secondary side optical cord led out from the splice unit to the optical device side is not sufficiently protected. Usually, a large number of the extra length portions of the secondary side optical cord are bundled in an exposed state and stored in a space between the side wall of the rack and the mount angle. For this reason, along with the sliding of the splice unit, the extra length bundle of the secondary side optical cord tends to bend, stretch, swing, and cause problems due to entrainment, contact, crosstalk, and the like. Also, when branch connection work is performed in the rack, it is necessary to return the optical cord from the secondary side to the fusion splicing part in the splice unit, or to add a splice unit for branch connection. In addition, there is a problem that it takes up space in the rack.

  Accordingly, an object of the present invention is to sufficiently protect the extra lengths of the primary and secondary side optical cords in an optical distribution board equipped with a slide type splice unit and to easily perform branch connection work in the rack. It is to provide a mechanism capable of

  In order to solve the above-described problems, an optical distribution board according to the present invention supports a slide-type splice unit on a mount angle erected on the inner side of a rack, and a primary side light between a fixed portion and a movable portion of the splice unit. A primary wiring duct that guides the extra length of the cord is installed, and a secondary wiring duct that guides the extra length of the secondary optical cord is installed between the movable part of the splice unit and the mount angle. A duct case is attached to the angle so that the bent portion of the secondary wiring duct can be freely moved in and out.

  In addition, the optical wiring board of the present invention is formed so that the duct case is spread in the sliding direction of the splice unit so that the space of the duct case can be effectively used and the work such as branch connection of the optical cable can be easily performed inside the rack. The duct case is provided with a cable clamp that holds the optical cable exposed from the primary wiring duct and a fusion splicing holder that holds the splicing splice of the optical cable.

  According to the present invention, in the optical wiring board equipped with the slide type splice unit, the extra length portion of the primary side optical cord is guided by the primary side wiring duct, and the extra length portion of the secondary side optical cord is connected to the secondary side wiring. By guiding with the duct and further storing the bent part of the secondary wiring duct in the duct case, there is an effect that the extra length parts of the primary and secondary side optical cords can be fully protected.

It is a perspective view which shows the splice unit periphery mechanism of the optical distribution board by this invention. It is a perspective view which shows the state which pulled out the movable part of the splice unit. It is a perspective view which expands and shows a duct case.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, in the optical wiring board 1 of this embodiment, a pair of left and right mount angles 2 are erected on the inner side of a rack (not shown). A large number of mounting holes 3 are arranged in the vertical direction on the front surface of the mount angle 2, and a splice unit 5 is mounted by screws 4 that are screwed into the mounting holes 3.

  The splice unit 5 includes a fixed portion 6 fixed to the mount angle 2 and a movable portion 7 that can slide back and forth with respect to the mount angle 2. A flexible primary wiring duct 8 is installed between the fixed part 6 and the movable part 7. And the primary side wiring duct 8 accommodates the extra length part of the primary side optical cord C1, and guides the extra length part in a non-contact state with the fixed part 6 as the movable part 7 slides. .

  On the other hand, the secondary side optical cord C2 led out from the splice unit 5 to the optical device side is accommodated in the secondary side wiring duct 9. The secondary side wiring duct 9 is formed flexibly in the same manner as the primary side wiring duct 8, and is laid between the front end corner member 10 of the movable portion 7 and either the left or right mount angle 2. As the movable portion 7 slides, the secondary side wiring duct 9 bends back and forth outside the mount angle 2 to guide the secondary side optical cord C2 in a non-contact state with the mount angle 2 and the side wall of the rack. It is supposed to be.

  The mount angle 2 is provided with a duct case 11 that accommodates the bent portion 9a (see FIG. 1) of the secondary wiring duct 9 so as to freely enter and exit. The duct case 11 is formed in a flat shape extending in the sliding direction (front-rear direction) of the splice unit 5. In the duct case 11, a duct storage space 14 is defined between the flange 12 and the cover 13, and a work space 15 for performing branch connection work of an optical cable (not shown) is provided on the rear side of the storage space 14. A fixed end of the primary side wiring duct 8 is disposed in the vicinity of the work space 15.

  As shown in FIG. 3, the work space 15 is provided with a cable clamp 16 and a tension member clamp 17 that hold the optical cable exposed from the primary wiring duct 8. A tray 18 is provided between the work space 15 and the fixed end of the secondary wiring duct 9, and a fusion splicing holder 19 that holds a fusion splicing portion of the optical cable is provided on the tray 18. Further, an extra length storage chamber 20 for the optical cable is formed between the tray 18 and the cover 13, and the cover 13 can protect the fusion-bonded portion of the optical cable from the bent portion 9 a.

  Therefore, according to the optical wiring board of this embodiment, the extra length portion of the primary side optical cord C1 is guided by the primary side wiring duct 8, and the extra length portion of the secondary side optical cord C2 is guided by the secondary side wiring duct 9. The bent portion 9 a of the secondary wiring duct 9 can be accommodated in the duct case 11. For this reason, in the optical distribution board 1 equipped with the slide-type splice unit 5, the extra length protection of the primary and secondary side optical cords C1 and C2 is ensured, and the optical cable is reliably prevented from being caught, touched and mixed. The characteristic value can be stabilized and the appearance around the splice unit 5 can be improved.

  Further, since the work space 15 is provided in the duct case 11 in addition to the storage space 14, it is possible to easily perform the direct connection and branch connection work of the optical cable that does not need to be bent, and the fusion connection in the vicinity of the work space 15. It is also possible to hold the fusion spliced portion of the optical cable in the holder 19. For this reason, the functionality of the sliding splice unit 5 can be enhanced by effectively utilizing the storage space of the secondary side wiring duct 9 without adding a separate splice unit for branch connection.

  In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the meaning of invention, it is also possible to change and comprise the periphery mechanism of the slide type splice unit 5 suitably.

DESCRIPTION OF SYMBOLS 1 Optical wiring board 2 Mount angle 5 Splice unit 6 Fixed part 7 Movable part 8 Primary side wiring duct 9 Secondary side wiring duct 9a Bending part 11 Duct case 16 Cable clamp 19 Fusion splicing holder C1 Primary side optical cord C2 Secondary side Optical cord

Claims (2)

A light that supports a slide-type splice unit on a mount angle standing on the inner side of the rack, and a primary side wiring duct that guides the extra length of the primary side optical cord between the fixed part and the movable part of the splice unit In the wiring board,
A secondary wiring duct that guides the extra length of the secondary side optical cord is installed between the movable part of the splice unit and the mount angle, and the bent part of the secondary side wiring duct is stored in the mount angle so that it can freely enter and exit. An optical distribution board with a duct case attached.   The duct case is formed so as to spread in the sliding direction of the splice unit, and a cable clamp for holding the optical cable exposed from the primary wiring duct in the duct case, and a fusion connection holder for holding the fusion connection portion of the optical cable. The optical wiring board according to claim 1, wherein

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