JP2018185508A - Optical wiring unit, optical fiber tray and wiring guide for optical fiber cord - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an extra length of an optical fiber cord bundle drawn from an optical fiber tray from other optical fiber trays located above and below even if the optical fiber tray is repeatedly moved (pulled out or pushed in). Provided are an optical fiber unit, an optical fiber tray, and a wiring guide for an optical fiber cord, which can suppress entanglement with an extra length of an optical fiber cord bundle. An optical wiring unit 50 is an optical wiring unit in which a plurality of drawable optical fiber trays 30 are stacked and accommodated, and the optical fiber tray inserts and removes an optical fiber cord in a direction intersecting the drawing direction. It has a tray main body having a wiring port 36, and a wiring guide 1 of an optical fiber cord attached to the wiring port and formed so as to be thinner toward the end in the direction of drawing. [Selection diagram] Fig. 1

Description

  The present invention relates to an optical wiring unit, an optical fiber tray, and an optical fiber cord wiring guide.

  Patent Document 1 describes an optical wiring unit configured to be able to pull out an optical fiber tray that accommodates an optical fiber. This optical wiring unit is provided with an extra length storage space in which the extra length of the optical fiber cord drawn out from the wiring port provided on the side of the optical fiber tray is stored.

JP 2005-157195 A

  In the optical wiring unit as described in Patent Document 1, the optical fiber cords drawn from the wiring port of the optical fiber tray are bundled in a large number. Further, a plurality of optical fiber trays constituting the optical wiring unit are stacked and accommodated in the vertical direction. Therefore, as the movement (drawing or pushing) of a certain optical fiber tray is repeated, the extra length of the optical fiber cord bundle drawn from the optical fiber tray is pulled out from the other optical fiber trays positioned above and below. In some cases, the extra length of the optical fiber cord bundle was tangled.

  In the present invention, even if the movement (drawing or pushing) of the optical fiber tray is repeated, the excess length of the optical fiber cord bundle drawn from the optical fiber tray is pulled out from the other optical fiber trays positioned above and below. An object of the present invention is to provide an optical wiring unit capable of suppressing tangling with the extra length of the optical fiber cord bundle.

  Some embodiments of the present invention are optical wiring units in which a plurality of pullable optical fiber trays are stacked and accommodated, and the optical fiber tray has an optical fiber cord inserted / extracted in a direction crossing the pulling direction. An optical wiring unit comprising: a tray main body having a wiring port; and an optical fiber cord wiring guide attached to the wiring port and formed so as to be thinner toward an end in the direction of the drawer. is there.

  Other characteristics of the present invention will be made clear by the description and drawings described later.

  According to some embodiments of the present invention, even if the movement (drawing or pushing) of the optical fiber tray is repeated, the extra length of the optical fiber cord bundle drawn from the optical fiber tray is positioned up and down. It is possible to suppress entanglement with the extra length of the optical fiber cord bundle drawn from the other optical fiber tray.

FIG. 1 is an overall perspective view of the optical wiring unit 50 of the first embodiment. FIG. 2A is a plan view of the optical fiber tray 30. FIG. 2B is a right side view of the optical fiber tray 30. FIG. 3 is an overall perspective view of the optical wiring unit 50 of the first embodiment when the optical fiber tray 30 is pulled out. FIG. 4A is a plan view of the optical fiber tray 30 of the second embodiment. FIG. 4B is a right side view of the optical fiber tray 30 of the second embodiment. FIG. 5A is a plan view of the optical fiber tray 30 of the third embodiment. FIG. 5B is a right side view of the optical fiber tray 30 of the third embodiment.

  At least the following matters will be apparent from the description and drawings described below.

  An optical wiring unit in which a plurality of drawable optical fiber trays are stacked and accommodated, wherein the optical fiber tray includes a tray body having a wiring port for entering and exiting an optical fiber cord in a direction intersecting the direction of the drawer, The optical wiring unit is characterized by having an optical fiber cord wiring guide attached to the wiring port and formed so as to become thinner toward the end in the direction of the drawer. According to such an optical wiring unit, even if the movement (drawing or pushing) of the optical fiber tray is repeated, the extra length of the optical fiber cord bundle drawn out from the optical fiber tray is different from the other. It is possible to suppress tangling with the extra length of the optical fiber cord bundle drawn from the optical fiber tray.

  Preferably, the optical fiber tray has a wiring clip provided at the wiring port to collect the bundle of optical fiber cords, and the wiring guide is longer than the length of the wiring clip in the pull-out direction. Thereby, many optical fiber cords entering / exiting via a wiring clip can be guided without omission.

  It is desirable that the wiring guide protrudes from the wiring port in the direction of the drawer. Thereby, many optical fiber cords which enter / exit a wiring port can be guided without omission.

  A plurality of optical fiber trays that are stacked and accommodated in an optical wiring unit so that the optical fiber unit can be pulled out, the tray main body having a wiring port for entering and exiting an optical fiber cord in a direction intersecting the direction of the drawer, and attached to the wiring port. An optical fiber tray having the optical fiber cord wiring guide formed so as to become thinner toward the end in the direction of the drawer becomes apparent. According to such an optical fiber tray, even if the movement (drawing or pushing) of the optical fiber tray is repeated, the extra length of the optical fiber cord bundle drawn out from the optical fiber tray is positioned up and down. It is possible to suppress tangling with the extra length of the optical fiber cord bundle drawn from the optical fiber tray.

  An optical fiber cord wiring guide provided on a plurality of optical fiber trays accommodated in a stack so as to be capable of being pulled out by an optical wiring unit, wherein the optical fiber tray extends in a direction intersecting the direction of the drawer. An optical fiber cord wiring guide having a tray main body having a wiring port for entering and exiting a cord, attached to the wiring port, and formed so as to become narrower at an end portion in the direction of the drawer. It becomes. According to such an optical fiber cord wiring guide, even if the movement (drawing or pushing) of the optical fiber tray is repeated, the extra length of the optical fiber cord bundle drawn from the optical fiber tray is positioned vertically. It is possible to suppress tangling with the extra length of the optical fiber cord bundle drawn from the other optical fiber tray.

  An optical wiring unit in which a plurality of drawable optical fiber trays are stacked and accommodated, wherein the optical fiber tray includes a tray body having a wiring port for entering and exiting an optical fiber cord in a direction intersecting the direction of the drawer, An optical wiring unit having the wiring guide of the optical fiber cord attached to the wiring port is clarified. According to such an optical wiring unit, even if the movement (drawing or pushing) of the optical fiber tray is repeated, the extra length of the optical fiber cord bundle drawn out from the optical fiber tray is different from the other. It is possible to suppress tangling with the extra length of the optical fiber cord bundle drawn from the optical fiber tray.

=== First Embodiment ===
<Configuration of optical wiring unit and optical fiber tray>
FIG. 1 is an overall perspective view of the optical wiring unit 50 of the first embodiment. FIG. 2A is a plan view of the optical fiber tray 30. FIG. 2B is a right side view of the optical fiber tray 30. First, the basic configuration of the optical wiring unit 50 and the optical fiber tray 30 shown in FIG. 1, FIG. 2A and FIG. 2B will be described. The configuration of the wiring guide 1 will be described.

  In the following description, each direction is defined as shown in the figure. That is, the direction in which the optical fiber tray 30 is moved (drawn or pushed) with respect to the optical wiring unit 50 is “front-rear direction”, the side from which the optical fiber tray 30 is pulled out is “front”, and the opposite side (push-in side). Is “after”. Note that the front-rear direction may be referred to as a “drawing direction”. In addition, the direction in which the plurality of optical fiber trays 30 are stacked is “up and down direction”, the surface of the optical fiber tray 30 on which the connector holder 35 is provided is “up”, and the opposite side (the optical fiber tray 30 “Bottom” is the bottom side. Also, the direction perpendicular to the front-rear direction and the up-down direction is referred to as “left-right direction”, the right side when viewed from the front to the rear is “right”, and the opposite side is “left”.

  The optical wiring unit 50 is a device that organizes and stores an optical connector, a fusion splicing portion, a multi-fiber single-core branching portion, a connection extra length, and the like used for connecting an optical fiber cable and a plurality of optical fibers. . The optical wiring unit 50 may also be referred to as an optical wiring board, an optical wiring box, an optical connection box, an optical termination box, or an optical termination rack.

  The optical wiring unit 50 includes an optical fiber tray 30 and a tray housing frame 40. In the optical wiring unit 50 of this embodiment, a plurality of optical fiber trays 30 are stacked and accommodated in a tray accommodation frame 40 in the vertical direction. In the optical wiring unit 50 shown in FIG. 1, five optical fiber trays 30 are stacked and accommodated. However, the number of optical fiber trays 30 is not limited to this, and any number of optical fiber trays 30 may be used. Also good.

  The optical fiber tray 30 is a member for storing an optical splitter, an optical connector adapter, an extra length storage case, and the like in addition to the optical fiber for connecting the optical fibers. The optical fiber tray 30 is horizontally placed, that is, accommodated in the tray accommodating frame 40 in a direction in which the bottom plate of the optical fiber tray 30 is substantially horizontal. Further, the optical fiber tray 30 can be drawn forward or pushed backward (accommodated) with respect to the optical wiring unit 50 (tray housing frame 40) (optical fiber when pulled out). (See FIG. 3 for the tray 30 for use). In the following description, the term “drawer” may include “push-in (accommodation)”.

  The optical fiber tray 30 includes a tray bottom plate 31, a tray side plate 32, a guide attachment portion 34, and a wiring guide 1. The tray bottom plate 31, the tray side plate 32, and the guide mounting portion 34 may be collectively referred to as a tray body. Hereinafter, the configuration of the tray body that is a configuration other than the wiring guide 1 will be described.

  The tray bottom plate 31 is a part on which the connection length of the optical fiber cord is placed when the optical fibers are connected to each other. It is also a part where an optical splitter, an optical connector adapter, etc. for connecting optical fibers are provided. On the tray bottom plate 31, a wiring clip 33, a connector holder 35, and a bundle pressing portion 37 are provided.

  The wiring clip 33 is a member that collects a bundle of optical fiber cords 100 that are pulled in for connection with the optical fiber tray 30 (see FIG. 2A). The wiring clip 33 is provided in the vicinity of a wiring port 36 (described later) on the tray bottom plate 31. However, the wiring clip 33 may not be provided.

  The connector holder 35 is a member that fixes an optical connector adapter that connects the optical connector 101 assembled to the tip of the optical fiber cord 100 (see FIG. 2A). The optical connector adapter fixed to the connector holder 35 includes the optical fiber cord 100 drawn into the optical fiber tray 30 through the right side wiring port 36 (or the wiring clip 33) in FIG. 2A and the other side (left side). The optical fiber cord 100 drawn from the wiring port 36 is connected by a connector, and an optical connector 101 assembled at the tip of the optical fiber cord 100 is inserted from both sides and connected inside. .

  As the optical connector 101 connected to the optical connector adapter, for example, an SC type optical connector (an optical connector established in JISC5973; SC: Single fiber Coupling optical fiber connector), an SC2 type optical connector, an MU type optical connector (established in JISC5983). An optical connector such as MU (Miniature-Unit coupling optical fiber connector), an MT type optical connector (optical connector established in JISC 5981, etc., MT: Mechanically Transferable), or the like can be used.

  The bundle pressing portion 37 is a portion that supports the connection surplus length of the optical fiber cord 100 on the tray bottom plate 31. In FIG. 2A, the bundle of optical fiber cords 100 drawn into the optical fiber tray 30 through the wiring port 36 (or the wiring clip 33) is branched into two, and the connection surplus length is supported in a circle. Has been. However, the method of supporting the connection surplus length is not limited to this. Further, the bundle pressing portion 37 may not be provided.

  The tray side plate 32 is a portion that stands on the periphery of the tray bottom plate 31 and serves as a side wall. The tray side plate 32 is cut only at a portion where the optical fiber cord 100 enters and exits, and the cutout portion serves as a wiring port 36.

  The guide attachment portion 34 is a member that is provided so as to be connected to the tray bottom plate 31 and supports the wiring guide 1 described later. The guide attachment portion 34 is provided so as to protrude downward from the wiring port 36.

  The tray housing frame 40 is a frame-like member that supports the optical fiber tray 30 so that it can be pulled out. In order to enable the optical fiber tray 30 to be pulled out, the tray receiving frame 40 may be provided with a fixed rail (not shown). On the other hand, the optical fiber tray 30 may be provided with a moving rail (not shown). However, the method of pulling out is not limited to sliding by rails. For example, the optical fiber tray 30 may be detachably accommodated by other methods, such as a rail that is provided in the tray accommodating frame 40 and a wheel that moves on the rail.

<Configuration of wiring guide>
Next, the wiring guide 1 will be described. The wiring guide 1 is a member that guides the optical fiber cord 100 entering and exiting the optical fiber tray. The wiring guide 1 is attached to the guide attachment portion 34 of the optical fiber tray 30. The wiring guide 1 is a rod-shaped member provided in a direction (drawing direction, front-rear direction) orthogonal to the entering / exiting direction (left-right direction) of the optical fiber cord 100. That is, the wiring guide 1 is a rod-like member provided in parallel with the drawing direction (front-rear direction) of the optical fiber tray 30. Since the wiring guide 1 is attached to the guide attachment portion 34 provided so as to protrude downward from the wiring port 36, the optical fiber cord 100 is guided so as to straddle the wiring guide 1. Thereby, the optical fiber cord 100 pulled out from the wiring port 36 (or the wiring clip 33) does not hang down immediately after being pulled out and is maintained in the left-right direction. Accordingly, it is possible to suppress the crossing and entanglement with the bundle of optical fiber cords 100 drawn from the other optical fiber trays 30 positioned above and below (see FIG. 3 described later).

  The wiring guide 1 has a guide body 2 and a guide end 3.

  The guide body 2 is a rod-shaped part extending in the pulling direction (front-rear direction). The guide body 2 is attached to the guide attachment portion 34. Note that the lengths of the guide body 2 in the vertical direction and the horizontal direction are substantially constant in the pull-out direction (front-rear direction). That is, the thickness is substantially constant in the pull-out direction (front-rear direction).

  The guide end 3 is a part located at both front and rear ends of the guide body 2. The wiring guide 1 of the present embodiment has a tapered surface 4 such that the length in the vertical direction and the horizontal direction becomes smaller toward both ends. That is, the guide end 3 is formed so as to become thinner toward the end in the front-rear direction (the pulling-out direction of the optical fiber tray 30). In the wiring guide 1 shown in FIG. 2A, the tapered surface 4 is formed so as to be gradually narrowed toward the tray side plate 32 side.

  As shown in FIG. 2A, the length (Y) of the wiring guide 1 in the front-rear direction (drawing direction) is longer than the length (X) of the wiring clip 33 (Y> X). Thereby, the bundle | flux of many optical fiber cords 100 entering / exiting via a wiring clip can be guided without omission.

  Further, the wiring guide 1 protrudes from the wiring port 36 in the front-rear direction (drawing direction). Thereby, the bundle | flux of many optical fiber cords 100 entering / exiting via a wiring clip can be guided without omission.

<About movement (drawer or push-in) of optical fiber tray>
FIG. 3 is an overall perspective view of the optical wiring unit 50 of the first embodiment when the optical fiber tray 30 is pulled out. FIG. 3 shows a diagram when the optical fiber tray 30 in the second stage from the top is pulled out of the optical fiber trays 30 in which the optical wiring units 50 are stacked. As shown in FIG. 3, the optical fiber cord 100 drawn from the wiring port 36 (or the wiring clip 33) has an extra length. This extra length is referred to as a withdrawal extra length 102 in order to distinguish it from the above-described extra connection length.

  In order to pull out the optical fiber tray 30 having the above-described configuration from the tray housing frame 40, the optical fiber tray 30 shown in FIG. 3 is pulled out toward the front side. At this time, as the optical fiber tray 30 is pulled out from the tray housing frame 40, the pull-out surplus length 102 also moves integrally with the optical fiber tray 30, and the pull-out surplus length 102 is pulled out to the front side of the tray housing frame 40. Therefore, the portion of the drawer surplus length 102 that is curvedly wired in a U shape is stretched. Then, as shown in FIG. 3, the optical fiber tray 30 is pulled out from the tray housing frame 40. In this state, replacement and switching work of the optical connector 101 can be performed. At this time, since the extra length 102 of the optical fiber cord 100 is pulled out to the side of the optical fiber tray 30, the length required for the replacement and switching of the optical fiber cord 100 is sufficiently secured. .

  Next, in order to house the optical fiber tray 30 in the tray housing frame 40, the optical fiber tray 30 is pushed in the housing direction (rearward direction). At this time, the optical fiber cord 100 is similarly drawn out from the other optical fiber trays located above and below (the first-stage optical fiber tray 30 and the third-stage optical fiber tray 30), and the extra length 102 is drawn. Is formed. For this reason, in order to prevent the extra lengths of the optical fiber cords from being entangled, the extra length of the optical fiber cord 100 drawn from the drawn optical fiber tray 30 (second stage) needs to be accommodated in a predetermined place. is there. That is, it is necessary to accommodate in the space between the bundle of optical fiber cords 100 drawn from the optical fiber tray 30 (first stage) and the optical fiber tray 30 (third stage).

  As described above, the guide mounting portion 34 of the optical fiber tray 30 is provided so as to protrude downward from the wiring port 36 of the optical fiber tray 30. And the wiring guide 1 of this embodiment is attached to this guide attaching part 34. FIG. Accordingly, the optical fiber cord 100 drawn out from the wiring port 36 (or the wiring clip 33) extends on the wiring guide 1 in the left-right direction (the direction of entering and exiting the optical fiber cord 100 at the wiring port 36) by the wiring guide 1. Guided by In the present embodiment, due to the presence of the wiring guide 1, the distance until the optical fiber cord 100 drawn out from the wiring port 36 hangs down is increased by the width of the wiring guide 1. That is, in the present embodiment, the presence of the wiring guide 1 makes the sagging deflection of the optical fiber cord 100 drawn from the wiring port 36 gentle. Thereby, a larger space is formed in the lower part of the bundle of optical fiber cords 100 drawn out from the wiring port 36 as compared with the case where the wiring guide 1 is not provided.

  As shown in FIG. 3, a bundle of optical fiber cords 100 drawn from the wiring port 36 of the first to third optical fiber trays 30 extends rightward by the wiring guide 1. For this reason, when the optical wiring unit 50 is viewed from the front to the rear, there is no wiring guide 1 below the bundle of optical fiber cords 100 drawn out from the wiring port 36 of the first-stage optical fiber tray 30. Compared to time, a larger space is formed. Similarly, when the optical wiring unit 50 is viewed from the front to the rear, there is no wiring guide 1 in the lower part of the bundle of optical fiber cords 100 drawn from the wiring port 36 of the second-stage optical fiber tray 30. Compared to time, a larger space is formed.

  Thus, when the second-stage optical fiber tray 30 pulled out is pushed in, the bundle of optical fiber cords 100 pulled out from the second-stage optical fiber tray 30 is removed from the first-stage optical fiber tray 30. The optical fiber cord 100 is pulled out and fits in a space formed in the lower part of the bundle. Similarly, when the drawn second-stage optical fiber tray 30 is pushed in, the bundle of optical fiber cords 100 drawn from the third-stage optical fiber tray 30 is removed from the second-stage optical fiber tray 30. The optical fiber cord 100 is pulled out and fits in a space formed in the lower part of the bundle. Accordingly, the optical fiber trays 30 (here, where the extra lengths 102 of the bundles of the optical fiber cords 100 drawn out from the wiring ports 36 of a certain optical fiber tray 30 (here, the second stage) are mutually positioned in the vertical direction. Then, it is possible to suppress entanglement with the pull-out surplus length 102 of the bundle of optical fiber cords 100 drawn out from the wiring openings 36 in the first and third stages).

  In the above description, when the optical fiber tray 30 is pushed in, the suppression of the entanglement between the pull-out surplus lengths 102 of the bundle of optical fiber cords 100 in the optical fiber tray 30 positioned in the vertical direction is described. The same applies to the case where the optical fiber tray 30 is pulled out. That is, even when the optical fiber tray 30 in the pushed state is pulled out, the wiring length of the optical fiber tray 30 where the pull-out lengths 102 of the bundle of the optical fiber cords 100 pulled out from the wiring port 36 are mutually positioned in the vertical direction. It is possible to suppress entanglement with the pull-out surplus length 102 of the bundle of optical fiber cords 100 drawn out from the port 36.

  As described above, the wiring guide 1 of the present embodiment is a rod-shaped member provided in the pulling direction, and the rear guide end 3 is formed so as to become thinner toward the end in the pulling direction. Thereby, the wiring guide 1 can be easily inserted into the space between the bundle of optical fiber cords 100 drawn from the optical fiber tray 30 (first stage) and the optical fiber tray 30 (third stage). Therefore, the optical fiber cord 100 guided by the wiring guide 1 is also easily in the space between the bundle of optical fiber cords 100 drawn from the optical fiber tray 30 (first stage) and the optical fiber tray 30 (third stage). Can be accommodated.

  The wiring guide 1 of the present embodiment is formed so as to be thinner toward the end in the pull-out direction, so that when the optical fiber tray 30 is pushed in or when the optical fiber tray 30 is pulled out, the wiring guide 1 is positioned vertically. It is easy to insert into the space formed in the lower part of the bundle of optical fiber cords 100 drawn out from the other optical fiber tray 30. As a result, the extra length 102 of the bundle of optical fiber cords pulled out from the wiring port 36 of the optical fiber tray 30 to be pulled out or pushed is pulled out from the wiring port 36 of the optical fiber tray 30 positioned in the vertical direction. Further, it is possible to suppress the entanglement with the pull-out surplus length 102 of the bundle of optical fiber cords 100.

  Further, as described above, in the wiring guide 1 shown in FIG. 2A, the guide end 3 is formed so as to be gradually narrowed toward the tray side plate 32 side. As a result, in the space between the bundle of optical fiber cords 100 drawn from the optical fiber tray 30 (first stage) and the optical fiber tray 30 (third stage), from the base side where the bundle of optical fiber cords 100 enters and exits. The wiring guide 1 can be easily inserted.

  Note that the guide end 3 of the wiring guide 1 of the present embodiment is formed so that the front end is also narrowed. This is particularly useful when the optical fiber tray 30 is pulled out. That is, even when the optical fiber tray 30 is pulled out, the bundle of optical fiber cords 100 drawn from the optical fiber tray 30 (first stage) and the optical fiber tray 30 (third stage) can be divided. Thereby, even if the movement (drawing or pushing) of the optical fiber tray 30 with respect to the wiring unit 50 is repeated, the entanglement between the extra lengths 102 of the optical fiber cord 100 can be suppressed. However, the front guide end 3 may not be formed to be thin (only the rear guide end 3 may be formed to be thin).

=== Second Embodiment ===
FIG. 4A is a plan view of the optical fiber tray 30 of the second embodiment. FIG. 4B is a right side view of the optical fiber tray 30 of the second embodiment. As shown in FIGS. 4A and 4B, the wiring guide 1 of the second embodiment may be formed in a flat plate shape. Further, it may be formed as a part of the tray bottom plate 31 protruding outside the wiring port 36. Note that the end of the wiring guide 1 in the pull-out direction is formed to be thin in the left-right direction.

=== Third Embodiment ===
FIG. 5A is a plan view of the optical fiber tray 30 of the third embodiment. FIG. 5B is a right side view of the optical fiber tray 30 of the third embodiment. As shown in FIGS. 5A and 5B, the wiring guide 1 of the third embodiment may be formed so as to be inserted through the support shaft 5. Note that the end of the wiring guide 1 in the pull-out direction is formed to be thin in the left-right direction.

=== Others ===
The above-described embodiments are for facilitating the understanding of the present invention, and are not intended to limit the present invention. The present invention can be modified and improved without departing from the gist thereof, and it goes without saying that the present invention includes equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Wiring guide, 2 Guide main body, 3 Guide end, 4 Tapered surface, 5 Support shaft 30 Tray for optical fibers, 31 Tray bottom plate, 32 Tray side plate 33 Wiring clip,
34 guide mounting portion, 35 connector holder, 36 wiring port, 37 bundle pressing portion 40 tray receiving frame 50 optical wiring unit,
100 optical fiber cord,
101 Optical connector, 102 Drawer length

Claims (6)

An optical wiring unit containing a plurality of stackable optical fiber trays,
The optical fiber tray is:
A tray body having a wiring port for entering and exiting an optical fiber cord in a direction crossing the direction of the drawer;
An optical wiring unit comprising: an optical fiber cord wiring guide attached to the wiring opening and formed so as to be thinner toward an end portion in the direction of the drawer. The optical wiring unit according to claim 1,
The optical fiber tray is:
A wiring clip provided at the wiring port for collecting the bundle of optical fiber cords;
The optical wiring unit, wherein the wiring guide is longer than a length of the wiring clip in the pull-out direction. The optical wiring unit according to claim 1 or 2,
The said wiring guide protrudes rather than the said wiring port in the direction of the said drawer | drawing-out. The optical wiring unit characterized by the above-mentioned. An optical fiber tray that is accommodated in a plurality of layers so that it can be pulled out to an optical wiring unit,
A tray body having a wiring port for entering and exiting an optical fiber cord in a direction crossing the direction of the drawer;
An optical fiber tray comprising: an optical fiber cord wiring guide attached to the wiring port and formed so as to become thinner toward an end in the direction of the drawer. An optical fiber cord wiring guide provided on an optical fiber tray accommodated in a plurality of layers so as to be drawable in an optical wiring unit,
The optical fiber tray has a tray body having a wiring port for entering and exiting the optical fiber cord in a direction intersecting with the direction of the drawer,
An optical fiber cord wiring guide, wherein the optical fiber cord wiring guide is attached to the wiring port and formed so as to become thinner toward an end in the direction of the drawer. An optical wiring unit containing a plurality of stackable optical fiber trays,
The optical fiber tray is:
A tray body having a wiring port for entering and exiting an optical fiber cord in a direction crossing the direction of the drawer;
An optical wiring unit comprising: a wiring guide for the optical fiber cord attached to the wiring port.

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