JP2019139181A - Optical wiring unit, rack having optical wiring unit, and manufacturing method of rack having optical wiring unit - Google Patents

Abstract

To easily perform installation work of an optical wiring unit to a rack when arranging the optical wiring unit to the rack with high density.SOLUTION: An optical wiring unit having a drawer part having an optical connector connection part and a casing for storing the drawer part includes a cable introduction part 80 for introducing an optical cable fiber connected to the optical connection part into the casing, and the cable introduction part includes a movable plate part 82 for fixing the optical fiber cable and a hinge mechanism 83 for allowing the movable plate part to be rotatable.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an optical wiring unit.

  2. Description of the Related Art As an optical wiring unit constituting an optical connection box, an optical wiring box, or the like, a unit in which a plurality of optical component storage trays are inserted into a housing and stored is known. In the optical wiring unit, the multi-core optical fiber cable is branched into single-fiber optical fiber cables. Each branched optical fiber cable is connected to a plurality of optical adapters provided on the front side (operator side) of each optical component storage tray. With regard to such an optical wiring unit, for example, in Patent Document 1, a plurality of optical wiring units (fiber termination block 101 shown in FIG. 1) are arranged for one rack (fiber distribution frame 11 shown in FIG. 1). An optical fiber wiring facility is disclosed.

Special table 2009-503581

  In the optical fiber wiring facility as described in Patent Document 1, the optical wiring units cannot be arranged at high density due to the restriction due to the arrangement of the introduction part that introduces the backbone optical fiber cable into each optical wiring unit. was there. That is, when the introduction part is provided on the upper surface (or lower surface) of the housing of the optical wiring unit, when the optical wiring unit is attached to the rack from the front side (operator side), the main optical fiber cable is disposed adjacent to the rack. Sometimes it interferes with the existing optical wiring unit. Further, when the introduction portion is provided on the side surface (or the back surface) of the optical wiring unit casing, the backbone optical fiber cable must be bent in order to route the backbone optical fiber cable upward (downward), A separate space is required to ensure a sufficient curvature so as not to increase the loss.

  An object of the present invention is to facilitate installation work of an optical wiring unit on a rack when the optical wiring units are arranged at a high density with respect to the rack.

  Some embodiments of the present invention are optical wiring units each having an extraction portion including an optical connector connection portion and a housing that accommodates the extraction portion, and an optical fiber cable connected to the optical connector connection portion. A cable introduction part for introducing the inside of the housing, the cable introduction part comprising a movable plate part for fixing the optical fiber cable and a hinge mechanism for rotating the movable plate part. This is a featured optical wiring unit.

  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, when the optical wiring units are arranged at a high density with respect to the rack, the installation work of the optical wiring units on the rack can be facilitated.

FIG. 1 is a perspective view of the optical wiring unit 10 provided with the cable introduction part 80 of the present embodiment. FIG. 2 is a perspective view of the cable introduction portion 80 of the present embodiment. FIG. 3A is a front view of the cable introduction portion 80 of the present embodiment. 3B is a cross-sectional view taken along line AA in FIG. 3A. FIG. 4 is a diagram of the optical wiring unit 10 provided with the cable introduction part 80 of the first comparative example. FIG. 5A is a diagram of the optical wiring unit 10 provided with the cable introduction part 80 of the second comparative example. FIG. 5B is a diagram of the optical wiring unit 10 provided with the cable introduction part 80 of the third comparative example. FIG. 6 is a side view showing a state in which the optical wiring unit 10 provided with the cable introduction part 80 of the present embodiment is attached to the rack. FIG. 7 is a plan view showing a state in which the optical wiring unit 10 provided with the cable introduction part 80 of the present embodiment is attached to the rack. FIG. 8 is a side view showing a state in which the optical wiring unit 10 provided with the cable introduction part 80 according to the modification of the present embodiment is attached to the rack.

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

  An optical wiring unit having a drawer portion having an optical connector connection portion and a housing for housing the drawer portion, and a cable for introducing an optical fiber cable connected to the optical connector connection portion into the housing An optical wiring unit is provided that has an introduction portion, and the cable introduction portion includes a movable plate portion that fixes the optical fiber cable and a hinge mechanism that allows the movable plate portion to rotate. . According to such an optical wiring unit, installation work of the optical wiring unit on the rack can be facilitated when the optical wiring unit is arranged with high density with respect to the rack.

  It is desirable that an optical fiber cable having a plurality of optical fibers has a branch part that branches for each single optical fiber cable, and the branch part is attached to the movable plate part. Thereby, in the movable plate part, it is possible to easily introduce the optical fiber cable into the optical wiring unit by branching from the basic optical fiber cable to a single-fiber optical cable that is easier to bend.

  It is desirable that the movable plate portion is provided to be inclined with respect to a direction perpendicular to the drawing direction of the drawer portion or a direction perpendicular to the pushing direction of the drawer portion. Thereby, even after the optical wiring unit is installed in the rack, it is possible to make it easy to see the branch portion attached to the movable plate portion from the side surface of the optical wiring unit.

  The direction of the axis around which the movable plate portion rotates is preferably a direction perpendicular to the drawing direction of the drawer portion or a direction perpendicular to the pushing direction of the drawer portion. Thereby, when installing an optical wiring unit in a rack with a movable plate part opened, it can suppress that a movable plate part interferes with a rack.

  The hinge mechanism includes a housing-side hinge member provided in the housing and a pair of plate-side hinge members provided in the movable plate portion. The housing-side hinge member includes the movable plate portion. It is desirable that a shaft portion that is a rotating shaft is attached, the pair of plate-side hinge members are provided on opposite sides of the movable plate portion, and the shaft portions are respectively inserted. Accordingly, the movable plate portion is provided to be inclined with respect to the direction perpendicular to the pulling direction of the drawer portion or the direction perpendicular to the pushing direction of the drawer portion, and the direction of the axis around which the movable plate portion rotates is The direction perpendicular to the pulling-out direction of the drawer or the direction perpendicular to the pushing-in direction of the drawer can be used.

  A rack with an optical wiring unit, comprising: an optical wiring unit including a drawer part including an optical connector connection part; a housing for housing the drawer part; and a rack on which a plurality of the optical wiring units can be installed. The optical wiring unit has a cable introduction part for introducing an optical fiber cable connected to the optical connector connection part into the housing, and the cable introduction part is a movable plate for fixing the optical fiber cable. And a rack with an optical wiring unit characterized by comprising a hinge mechanism that allows the movable plate portion to rotate. According to such a rack with an optical wiring unit, when the optical wiring units are arranged at a high density with respect to the rack, the installation work of the optical wiring unit on the rack can be facilitated.

  It is preferable that the movable plate portion is provided to be inclined with respect to a direction perpendicular to a direction in which the optical wiring unit is installed with respect to the rack. Thereby, even after the optical wiring unit is installed in the rack, it is possible to make it easy to see the branch portion attached to the movable plate portion from the side surface of the optical wiring unit.

  The direction of the axis around which the movable plate portion rotates is preferably perpendicular to the direction in which the optical wiring unit is installed with respect to the rack. Thereby, when installing an optical wiring unit in a rack with a movable plate part opened, it can suppress that a movable plate part interferes with a rack.

  A method of manufacturing a rack with an optical wiring unit, comprising: an optical wiring unit including a drawer portion including an optical connector connection portion; a housing for housing the drawer portion; and a rack capable of installing a plurality of the optical wiring units. A cable introduction part for introducing an optical fiber cable connected to the optical connector connection part into the housing, a movable plate part for fixing the optical fiber cable, and a rotation of the movable plate part Preparing the optical wiring unit including a hinge mechanism that enables the rotating mechanism, and rotating the movable plate unit to open the movable plate unit with respect to the housing; The manufacturing method of the rack with an optical wiring unit, which is characterized by being installed, becomes clear. According to such a method for manufacturing a rack with an optical wiring unit, the optical wiring unit can be easily installed in the rack when the optical wiring units are arranged with high density relative to the rack.

  After the optical wiring unit is installed with respect to the rack, it is desirable that the movable plate portion is closed with respect to the casing by rotating the movable plate portion. Accordingly, when the optical wiring units are arranged with high density with respect to the rack, the installation work of the optical wiring units on the rack can be facilitated.

=== This Embodiment ===
<Overall Configuration of Optical Wiring Unit 10>
FIG. 1 is a perspective view of the optical wiring unit 10 provided with the cable introduction part 80 of the present embodiment.

  In the following description, each direction is defined as shown in the figure. That is, the direction in which the drawer 12 is moved (drawn or pushed) with respect to the housing 11 of the optical wiring unit 10 is “front-rear direction”, the side from which the drawer 12 is pulled out is “front”, and the opposite side (drawer 12 The side that pushes in is “rear”. Note that the front-rear direction may be referred to as a “drawing direction” or a “push-in direction”. The direction in which a plurality of optical connector adapters 16 (hereinafter sometimes simply referred to as “optical adapters 16”) are arranged in the drawer 12 is referred to as “vertical direction”, and the optical fiber cable holder 20 is The side to be provided is “lower” and the opposite side is “upper”. Further, 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 left-right direction is also the direction in which the plurality of drawers 12 are arranged.

  The optical wiring unit 10 is a device in which a trunk optical fiber cable having a plurality of cores is branched into optical fibers for each single core, and the ends of the branched optical fibers are terminated so that connectors can be connected. It is. The optical wiring unit 10 may be called an optical connection box. Furthermore, the optical wiring unit 10 may be called an optical termination box or an optical wiring box. As shown in FIG. 1, in this embodiment, a trunk optical fiber cable 1 having a plurality of cores is branched into an inner side optical fiber cable 3 for each single core by a branching section 2 provided at the rear of the optical wiring unit 10. ing. Further, the bundle of branched inner optical fiber cables 3 is introduced into the housing 11 of the optical wiring unit 10, and the end of each inner optical fiber cable 3 is connected to the optical adapter 16 inside the housing 11. Each is connected (not shown). An internal optical connector plug 4 (hereinafter sometimes simply referred to as “internal optical plug 4”) is provided at the end of each internal optical fiber cable 3, and each internal optical plug 4 Is connected to the optical adapter 16. A work-side optical connector plug 5 (hereinafter sometimes simply referred to as “work-side optical plug 5”) is inserted into and removed from the optical adapter 16 to which the internal-side optical plug 4 is connected. By doing so, the connection between the internal optical fiber cable 3 and the working optical fiber cable 6 can be switched. As shown in FIG. 1, the bundle of working side optical fiber cables 6 is routed below the optical wiring unit 10.

  The optical wiring unit 10 includes a housing 11, a plurality of drawers 12, and a slide mechanism 50.

  The housing 11 is a member that houses the plurality of drawers 12 and the slide mechanism 50. Moreover, the housing | casing 11 is also a member which fixes the optical wiring unit 10 by attaching to the rack not shown. Since the front surface of the housing 11 is not provided and is open, a later-described drawer portion 12 can be pulled out from the housing 11 to the front side. Note that a lid member (not shown) may be provided so as to cover the front surface of the housing 11 when all of the plurality of drawers 12 are in the pushed state (described later).

  The drawer portion 12 is a member that holds a plurality (six in this case) of optical adapters 16 (described later). As shown in FIG. 1, the lead-out part 12 is formed in a plate shape perpendicular to the left-right direction. The drawer portion 12 has an optical adapter 16, and a plurality of optical adapters 16 are arranged on the front side of the drawer portion 12. In the optical wiring unit 10 of the present embodiment, twelve lead portions 12 are arranged in the left-right direction. However, the arrangement direction and the number of the lead portions 12 in the optical wiring unit 10 of the present embodiment are not limited to this. A slide mechanism 50 is provided at each of the upper and lower ends of the drawer portion 12. Thereby, the drawer part 12 can be moved (drawn or pushed) with respect to the housing 11.

  In FIG. 1, among the plurality of lead portions 12 included in the optical wiring unit 10, the second lead portion 12 from the left is pulled out. In this way, the state where the drawer portion 12 is pulled out may be referred to as a “drawer state”. Further, as shown in FIG. 1, among the plurality of lead portions 12 included in the optical wiring unit 10, the lead portions 12 other than the second lead portion 12 from the left are not drawn. Thus, the state where the drawer portion 12 is not pulled out may be referred to as an “initial state” or a “push-in state”. Since the optical adapter 16 (described later) is pulled out to the front side of the optical adapter 16 of the other drawer portion 12 in the drawer portion 12 in the drawer state, the worker can work the optical plug 5 on the work side with respect to the optical adapter 16. Can be easily performed. Then, when the drawer portion 12 that is in the pulled out state is pushed in, the initial state (or the pushed state) is restored.

  The optical adapter 16 is a member that allows the optical fiber cable inside and outside the optical wiring unit 10 to be connected to a connector. As shown in FIG. 1, in the present embodiment, the inner side optical plug 4 and the working side optical plug 5 are connected via the optical adapter 16, so that the inner side optical fiber cable 3 in the casing 11 and the casing are connected. A work-side optical fiber cable 6 outside the body 11 is connected by a connector. The optical adapter 16 may be referred to as “optical connector connection portion 16”. As shown in FIG. 1, the lead-out portion 12 in the optical wiring unit 10 of the present embodiment has a plurality (here, six) of optical adapters 16. The optical adapter 16 is a four-fiber type optical adapter. For this reason, the drawer | drawing-out part 12 has a connection port of a total of 24 work side optical plugs 5 (or internal side optical plug 4) in an up-down direction. However, the arrangement direction and the number of the optical adapters 16 and the connection ports are not limited to this.

  The slide mechanism 50 is a member that enables the drawer portion 12 to move in the front-rear direction. A fixed rail of the slide mechanism 50 is attached to the housing 11, and a movable rail of the slide mechanism 50 is attached to the drawer portion 12. When the movable rail moves in the front-rear direction with respect to the fixed rail, the drawer portion 12 can move in the front-rear direction with respect to the housing 11. Note that a pair of slide mechanisms 50 are provided above and below the drawer 12.

  In the present embodiment, the optical wiring unit 10 further includes an optical fiber cable holder 20, a wiring identification unit 40, a coupling mechanism 60, and a cable introduction unit 80.

  The optical fiber cable holder 20 is a member that holds a plurality of optical fiber cables in a bundle. As shown in FIG. 1, the optical fiber cable holder 20 of this embodiment is attached to the lower part of the drawer portion 12. A plurality of work-side optical fiber cables 6 that are connected to the optical adapter 16 of the drawer portion 12 and hang down are bundled and held. As described above, since the drawer portion 12 has a total of 24 connection ports for the work side optical plugs 5 in the vertical direction, the optical fiber cable holder 20 has a maximum of 24 work side optical fiber cables 6. Can be bundled and held. However, the number of work side optical fiber cables 6 that can be held by the optical fiber cable holder 20 is not limited to this. Further, for example, the optical fiber cable holder 20 may be attached to the inside of the housing 11 to bundle and hold the plurality of inner optical fiber cables 3. Furthermore, the optical fiber cable holder 20 may bundle and hold a plurality of optical fiber cables other than the work side optical fiber cable 6 and the inner side optical fiber cable 3.

  The wiring identification unit 40 is a member that identifies a bundle of optical fiber cables. As shown in FIG. 1, the wiring identification unit 40 of the present embodiment is attached to a fixing member 13 provided inside the housing 11. A plurality of inner-side optical fiber cables 3 connected to the optical adapter 16 of the drawer portion 12 are bundled and held. However, in FIG. 1, illustration of a state in which the wiring identification unit 40 holds the plurality of inner optical fiber cables 3 in a bundle is omitted. In addition, the bundle of the inner optical fiber cables 3 can be identified for each lead-out portion 12 by the identification mark 44 provided on the identification portion 42 of the wiring identification unit 40. As described above, since the lead-out portion 12 has a total of 24 connection ports for the internal optical plugs 4 in the vertical direction, the wiring identification unit 40 has a maximum of 24 internal optical fiber cables 3. Can be bundled and held. However, the number of the inner side optical fiber cables 3 that can be held by the wiring identification unit 40 is not limited to this. Further, for example, the work identification optical fiber cable 6 may be bundled and held by attaching the wiring identification unit 40 to the outside of the housing 11. Further, the wiring identification unit 40 may bundle and hold a plurality of optical fiber cables other than the work side optical fiber cable 6 and the inner side optical fiber cable 3.

  The connection mechanism 60 is a member that allows the drawer portion of the optical wiring unit to be detached from the housing of the optical wiring unit. As shown in FIG. 1, the connection mechanism 60 of the present embodiment is provided between the drawer portion 12 and the slide mechanism 50. A pair of coupling mechanisms 60 are provided above and below the drawer portion 12.

  The cable introduction unit 80 is a member that introduces the optical fiber cable into the housing of the optical wiring unit. As shown in FIG. 1, the cable introduction portion 80 of this embodiment is provided at the rear portion of the housing 11. Further, the branch portion 2 is attached to the cable introduction portion 80. A trunk optical fiber cable 1 having a plurality of cores is branched into an inner side optical fiber cable 3 for each single core by the branch part 2, and a bundle of the inner side optical fiber cables 3 is introduced into an introduction opening 81 provided in the cable introduction part 80. To the inside of the housing 11.

<Cable introduction part 80>
FIG. 2 is a perspective view of the cable introduction portion 80 of the present embodiment. FIG. 3A is a front view of the cable introduction portion 80 of the present embodiment. 3B is a cross-sectional view taken along line AA in FIG. 3A. FIG. 3A shows a front view of a plate body 84 (movable plate portion 82) provided to be inclined with respect to the left-right direction. Moreover, in FIG. 3B, the plate main body 84 (movable plate part 82) part to which the branch part 2 is attached is shown with the broken line.

  As described above, the cable introduction unit 80 is a member that introduces the optical fiber cable into the housing of the optical wiring unit. The cable introduction part 80 has a movable plate part 82 and a hinge mechanism 83. In addition, a range surrounded by the movable plate portion 82 and the hinge mechanism 83 is formed in the cable introduction portion 80 as an introduction opening portion 81.

  The movable plate portion 82 is a member that fixes an optical fiber cable introduced into the housing of the optical wiring unit. Further, the movable plate portion 82 may be a member that can change the extending direction of the optical fiber cable by rotating with respect to the housing while fixing the optical fiber cable when the optical wiring unit is installed in the rack. is there. As shown in FIG. 2, the movable plate portion 82 of the present embodiment is provided on the rear side (back side) of the housing 11 of the optical wiring unit 10. A hinge mechanism 83 is provided below the movable plate portion 82. As will be described later, the movable plate portion 82 can rotate around the shaft portion 87 of the hinge mechanism 83.

  Moreover, as shown in FIG. 2, the branch part 2 is attached to the movable plate part 82 of this embodiment. The branch portion 2 is a member that branches an optical fiber cable having a plurality of optical fibers for each single-fiber optical fiber cable. In the present embodiment, the trunk optical fiber cable 1 having a plurality of cores is branched for each single-core inner-side optical fiber cable 3 by the branch portion 2. The backbone optical fiber cable 1 is introduced into the branch part 2 from the upper part of the branch part 2, and is branched into a plurality of internal optical fiber cables 3 in the branch part 2. The plurality of internal optical fiber cables 3 branched in the branching section 2 are drawn out of the branching section 2 from the lower part of the branching section 2. The backbone optical fiber cable 1 and the plurality of inner optical fiber cables 3 are fixed to the movable plate part 82 via the branch part 2. The plurality of inner-side optical fiber cables 3 are introduced into the housing 11 of the optical wiring unit 10 through an introduction opening 81 that is a range surrounded by the movable plate portion 82 and the hinge mechanism 83.

  As described above, since the branch portion 2 is attached to the movable plate portion 82, it is possible to easily introduce the optical fiber cable into the housing 11 of the optical wiring unit 10. That is, in this embodiment, the branching part 2 attached to the movable plate part 82 branches from the trunk optical fiber cable 1 to the single-core inner side optical fiber cable 3 that is easier to bend. For this reason, a single-core inner-side optical fiber cable 3 that is easier to bend as an optical fiber cable introduced into the inside of the housing 11 of the optical wiring unit 10 through the introduction opening 81 formed in the lower portion of the movable plate portion 82. Thus, introduction can be facilitated.

  The movable plate portion 82 has a plate body 84 and a lock portion 88.

  The plate body 84 is a part for fixing an optical fiber cable introduced into the housing of the optical wiring unit. In the present embodiment, the branch portion 2 is attached to the plate body 84, and the backbone optical fiber cable 1 and the plurality of inner-side optical fiber cables 3 are fixed to the plate body 84 via the branch portion 2. The plate body 84 is a plate-like portion provided on the rear side (back side) of the housing 11 of the optical wiring unit 10. As shown in FIG. 3A, the lower portion of the plate body 84 is cut out at the center. A range surrounded by the notched portion and the shaft portion 87 of the hinge mechanism 83 is an introduction opening 81. As shown in FIG. 3A, in the introduction opening 81, a plurality of inner-side optical fiber cables 3 branched from the trunk optical fiber cable 1 by the branching portion 2 are introduced into the housing 11.

  As shown in FIG. 3A, in the present embodiment, the plate body 84 is provided with a pair of leg portions 90 (a leg portion 90A and a leg portion 90B) on both the left and right sides of the introduction opening 81 described above. The lower ends of the pair of leg portions 90 are connected to plate-side hinge members 85 (plate-side hinge member 85A and plate-side hinge member 85B) of the hinge mechanism 83, respectively. Note that the leg portion 90A and the plate side hinge member 85A (and the leg portion 90B and the plate side hinge member 85B) may be integrally formed.

  As shown in FIG. 3B, in the present embodiment, the plate body 84 is provided to be inclined with respect to the left-right direction. In addition, a pair of leg portions 90 (leg portion 90A and leg portion 90B) which are part of the plate body 84 are also provided to be inclined with respect to the left-right direction. As shown in FIG. 7 to be described later, when the optical wiring unit 10 is installed in the rack, in this embodiment, the front side, which is the side where the lead-out portion 12 is provided in the optical wiring unit 10, is fronted. It will be installed against. At this time, the rear side of the optical wiring unit 10 on which the branch portion 2 is provided is the back side of the rack 7, and a lot of wiring may be routed. It may be difficult to see from the back side. Therefore, as shown in FIG. 3B, the plate main body 84 is provided so as to be inclined with respect to the left-right direction, so that the plate main body can be viewed from the side of the optical wiring unit 10 (from the left to the right in this embodiment). It is possible to make it easy to see the bifurcation 2 portion attached to 84.

  Further, as shown in FIG. 7 to be described later, when the optical wiring unit 10 is installed in the rack 7, the optical wiring unit 10 is moved so that the front side on which the drawer portion 12 is provided is the front surface. The direction (rear direction) is the same as the pushing direction of the drawer portion 12. When the optical wiring unit 10 is removed from the rack, the direction in which the optical wiring unit 10 is moved (forward direction) is the same as the pulling-out direction of the drawer portion 12. That is, in the installation work or removal work from the rack of the optical wiring unit 10, the optical wiring unit 10 is moved in the push-in direction of the drawer part 12 or in the pull-out direction of the drawer part 12. Then, the plate body 84 (movable plate portion 82) of the present embodiment is provided so as to be inclined with respect to the direction (left-right direction) perpendicular to the pull-out direction of the pull-out portion 12 or the push-in direction of the pull-out portion 12. Become. In the present embodiment, the plate body 84 (movable plate portion 82) is inclined so as to face the left side, but the direction in which the plate body 84 faces is not limited to this. The plate main body 84 (movable plate portion 82) may be provided so as to be inclined with respect to the direction (left-right direction) perpendicular to the pull-out direction of the drawer portion 12 or the push-in direction of the drawer portion 12.

  The lock portion 88 is a member that fixes the movable plate portion 82 to the housing 11. In the present embodiment, the lock portion 88 is provided on the upper portion of the plate body 84. Further, a pair of lock portions 88 are provided on the left and right. As will be described later, the movable plate portion 82 is provided to be rotatable about a shaft portion 87 by a hinge mechanism 83. For this reason, the rotation of the movable plate portion 82 can be restricted by fixing the movable plate portion 82 to the housing 11 by the lock portion 88. In the lock part 88 of this embodiment, the movable plate part 82 is fixed to the housing 11 by screwing. However, the lock portion 88 is not limited to screwing, and may be any device that can fix the movable plate portion 82 to the housing 11. Further, the lock portion 88 may not be provided.

  The hinge mechanism 83 is a member that makes the movable plate portion 82 rotatable. As shown in FIG. 2, the hinge mechanism 83 of the present embodiment is provided on the rear side (back side) of the housing 11 of the optical wiring unit 10. A movable plate portion 82 is provided on the upper portion of the hinge mechanism 83.

  The hinge mechanism 83 includes a plate side hinge member 85, a casing side hinge member 86, and a shaft portion 87. The hinge mechanism 83 is a mechanism in which a plate-side hinge member 85 and a casing-side hinge member 86 are provided so as to be rotatable with respect to each other with a shaft portion 87 as an axis. In the hinge mechanism 83 of this embodiment, the housing side hinge member 86 is fixed to the housing 11, and the shaft portion 87 is also fixed to the housing 11 via the housing side hinge member 86. For this reason, in the hinge mechanism 83 of this embodiment, the plate side hinge member 85 is a mechanism provided rotatably with respect to the housing | casing 11 centering on the axial part 87. As shown in FIG.

  The plate side hinge member 85 is a member that becomes the movable side (rotation side) in the hinge mechanism. A pair of left and right plate-side hinge members 85 are provided, and are respectively connected to the lower ends of the pair of leg portions 90 of the plate body 84 (movable plate portion 82). Further, the plate-side hinge member 85A and the leg portion 90A (and the plate-side hinge member 85B and the leg portion 90B) may be integrally formed. In the present embodiment, the shaft portion 87 is inserted through the plate-side hinge member 85. For this reason, the plate side hinge member 85 is provided so that it can rotate centering | focusing on the axial part 87. As shown in FIG. As will be described later, since the shaft portion 87 extends in the left-right direction, the plate-side hinge member 85 rotates about the left-right direction as an axis. Thereby, the movable plate part 82 provided in the upper part of the plate side hinge member 85 can be rotated with respect to the housing | casing 11. FIG. 6 and 7, which will be described later, when the optical wiring unit 10 is installed in the rack 7, the backbone optical fiber 1 is rotated with respect to the housing 11 while the backbone optical fiber cable 1 is fixed. The extending direction of the cable 1 can be changed to the front-rear direction.

  The case-side hinge member 86 is a member that is a fixed side in the hinge mechanism. A pair of left and right housing side hinge members 86 are provided and connected to the housing 11, respectively. The pair of housing-side hinge members 86 are provided outside the pair of plate-side hinge members 85 in the left-right direction. A shaft portion 87 is provided between the pair of housing-side hinge members 86.

  The shaft portion 87 is a member that becomes a rotation shaft of the hinge mechanism. The shaft portion 87 of the present embodiment is a member that extends in the left-right direction between the pair of housing-side hinge members 86. That is, the shaft portion 87 of the present embodiment is provided in a direction (left-right direction) perpendicular to the drawing direction of the drawing portion 12 or the pushing direction of the drawing portion 12. As described above, the plate body 84 (movable plate portion 82) is provided to be inclined with respect to the left-right direction. However, the shaft portion 87 is a member extending in the left-right direction, and the plate-side hinge member 85 is rotatably provided with the shaft portion 87 as an axis. For this reason, in the present embodiment, the plate body 84 (movable plate portion 82) provided to be inclined with respect to the left-right direction is rotatable about the shaft portion 87 extending in the left-right direction. That is, the plate body 84 (movable plate portion 82) rotates and can be tilted in the pushing direction (rear side) of the drawer portion 12, and the extending direction of the core optical fiber cable 1 can be changed to the rear direction. .

  As shown in FIG. 3B, the plate-side hinge member 85 is provided on the opposite side of the plate body 84 (movable plate portion 82), and the shaft portion 87 is inserted therethrough. That is, the plate-side hinge member 85A is provided on the rear side with respect to the plate main body 84 (movable plate portion 82). On the other hand, the plate side hinge member 85B is provided on the front side with respect to the plate main body 84 (movable plate portion 82). The shaft portion 87 is inserted through the plate-side hinge member 85A and the plate-side hinge member 85B. Accordingly, the movable plate portion 82 is provided to be inclined with respect to the direction perpendicular to the pulling direction of the drawer portion 12 or the direction perpendicular to the pushing direction of the drawer portion 12 (left and right direction), and the movable plate portion 82 rotates. The direction of the shaft portion 87 can be a direction perpendicular to the drawing direction of the drawer portion 12 or a direction perpendicular to the pushing direction of the drawer portion 12 (left-right direction). The state after the movable plate portion 82 rotates will be described later.

<Attachment of Optical Wiring Unit 10 in Comparative Example>
In the following description, the optical wiring unit 10 provided with the cable introduction part 80 of the comparative example will be described. In this comparative example, a plurality of examples are given for the optical wiring units 10 where the positions where the cable introduction portions 80 are provided are different.

First Comparative Example FIG. 4 is a diagram of the optical wiring unit 10 provided with the cable introduction part 80 of the first comparative example. The cable introduction part 80 of the first comparative example is provided in the upper part of the casing 11 of the optical wiring unit 10, and the backbone optical fiber cable 1 is introduced into the casing 11 in the cable introduction part 80. FIG. 4 shows a state in which the optical wiring unit 10 provided with the cable introduction part 80 of the first comparative example is installed in the rack. In FIG. 4, in order to install the optical wiring unit 10 in the rack side by side in the vertical direction, the optical wiring unit 10 already installed in the rack is illustrated on the upper side, and below the optical wiring unit 10, A state in which another optical wiring unit 10 is installed in a rack is shown.

  As described above, the cable introducing portion 80 of the first comparative example is provided on the upper portion of the housing 11 of the optical wiring unit 10. For this reason, the trunk optical fiber cable 1 extends upward from the upper part of the housing 11. When the optical wiring units 10 are installed in the rack side by side in the vertical direction, it is necessary to secure a space for accommodating the backbone optical fiber cable 1 extending upward. That is, in order to secure a space for accommodating the backbone optical fiber cable 1 extending to the upper part of the optical wiring unit 10, it is necessary to separate the vertical interval between the optical wiring units 10 by a predetermined amount D. For this reason, even if it is going to arrange | position the optical wiring unit 10 with respect to a rack with high density, in order to ensure the space | interval D for accommodating the backbone optical fiber cable 1, the several optical wiring unit 10 is adjoined to an up-down direction. There was a limit to this. Further, as shown in FIG. 4, in order to accommodate the backbone optical fiber cable 1, the bending loss of the optical fiber inside the backbone optical fiber cable 1 is increased by adding a bend R to the backbone optical fiber cable 1. There was a fear. Further, when another optical wiring unit 10 is to be installed in the rack below the optical wiring unit 10 already installed in the rack, if the interval D is small, it extends from the upper part of the other optical wiring unit 10. The backbone optical fiber cable 1 may interfere with the optical wiring unit 10 already installed in the rack.

Second Comparative Example FIG. 5A is a diagram of the optical wiring unit 10 provided with the cable introduction part 80 of the second comparative example. The cable introduction part 80 of the second comparative example is provided at the rear part of the casing 11 of the optical wiring unit 10, and the backbone optical fiber cable 1 is introduced into the casing 11 at the cable introduction part 80. Since the cable introduction part 80 of the second comparative example is provided at the rear part of the casing 11 of the optical wiring unit 10, the backbone optical fiber cable 1 extends rearward from the rear part of the casing 11. When installing the optical wiring unit 10 in the rack, it is necessary to secure a space for housing the backbone optical fiber cable 1 extending to the rear part between the optical wiring unit 10 and the rack 7. That is, in order to secure a space for accommodating the backbone optical fiber cable 1 extending to the rear part of the optical wiring unit 10, it is necessary to separate the optical wiring unit 10 and the rack in the front-rear direction by a predetermined amount D. For this reason, even if it is going to arrange | position the optical wiring unit 10 with high density with respect to a rack, in order to ensure the space | interval D for accommodating the backbone optical fiber cable 1, the optical wiring unit 10 is installed in the front-back direction with respect to a rack. There was a limit to the proximity. Further, as shown in FIG. 5A, by bending the backbone optical fiber cable 1 to accommodate the backbone optical fiber cable 1, bending loss of the optical fiber inside the backbone optical fiber cable 1 is increased. There was a fear.

Third Comparative Example FIG. 5B is a diagram of the optical wiring unit 10 provided with the cable introduction unit 80 of the third comparative example. The cable introducing portion 80 of the third comparative example is provided on the left side of the housing 11 of the optical wiring unit 10, and the backbone optical fiber cable 1 is introduced into the housing 11 in the cable introducing portion 80. Since the cable introduction part 80 of the third comparative example is provided on the left side of the casing 11 of the optical wiring unit 10, the backbone optical fiber cable 1 extends leftward from the side of the casing 11. . When installing the optical wiring unit 10 in the rack, it is necessary to secure a space for accommodating the backbone optical fiber cable 1 extending to the left side with the rack 7. In other words, in order to secure a space for accommodating the backbone optical fiber cable 1 extending to the left side of the optical wiring unit 10, it is necessary to increase the horizontal distance between the optical wiring unit 10 and the rack by a predetermined amount D. For this reason, even if it is going to arrange | position the optical wiring unit 10 with high density with respect to a rack, in order to ensure the space | interval D for accommodating the trunk optical fiber cable 1, the optical wiring unit 10 is set to the left-right direction with respect to a rack. There was a limit to the proximity. Further, as shown in FIG. 5B, in order to accommodate the backbone optical fiber cable 1, the bending loss of the optical fiber inside the backbone optical fiber cable 1 is increased by adding a bend R to the backbone optical fiber cable 1. There was a fear.

<Manufacturing method of rack with optical wiring unit in this embodiment>
FIG. 6 is a side view showing a state in which the optical wiring unit 10 provided with the cable introduction part 80 of the present embodiment is attached to the rack. Of the three optical wiring units 10 shown in FIG. 6, the upper and lower optical wiring units 10 are already installed in the rack. Further, the central optical wiring unit 10 shows a state where it is installed between the upper and lower optical wiring units 10 already installed in the rack. The cable introduction part 80 of this embodiment is provided at the rear part of the housing 11 of the optical wiring unit 10. Then, the trunk optical fiber cable 1 extends upward from the upper part of the branch part 2 attached to the cable introduction part 80. For this reason, it is not necessary to bend the basic optical fiber cable 1 for the optical wiring unit 10 already installed in the rack, and the receiving portion of the basic optical fiber cable 1 is small in the front-rear direction. Can be brought closer to the rear side. For this reason, the optical wiring unit 10 can be installed with high density with respect to the rack.

  When installing the central optical wiring unit 10 between the upper and lower optical wiring units 10 already installed in the rack, the operator loosens the screwing of the lock portion 88 and moves the movable plate portion 82 to the housing 11. To make it rotatable. If it does so, the movable plate part 82 can be rotated with respect to the housing | casing 11 centering on the axial part 87, and the movable plate part 82 can be tilted back. As a result, the branch portion 2 attached to the movable plate portion 82 also rotates, so that the trunk optical fiber cable 1 extends rearward from the branch portion 2. Since the rearward direction from which the backbone optical fiber cable 1 extends can be made the same direction as the installation direction (rearward direction) of the optical wiring unit 10 in the rack, the backbone optical fiber cable 1 interferes with the upper and lower optical wiring units 10. Can be suppressed. For this reason, the installation work to the rack of the optical wiring unit 10 can be made easy.

  FIG. 7 is a plan view showing a state in which the optical wiring unit 10 provided with the cable introduction part 80 of the present embodiment is attached to the rack. As described above, the plate body 84 (movable plate portion 82) is provided to be inclined with respect to the left-right direction. However, the shaft portion 87 is a member extending in the left-right direction, and the plate-side hinge member 85 is rotatably provided with the shaft portion 87 as an axis. As a result, the plate body 84 (movable plate portion 82) rotates and can be tilted in the rack installation direction (rear side). By doing so, the plate body 84 (movable plate portion 82) can be prevented from interfering with the rack. That is, when the optical wiring unit 10 is installed in the rack with the movable plate portion 82 opened, it is possible to suppress the movable plate portion 82 from interfering with the rack.

<Manufacturing Method of Rack with Optical Wiring Unit in Modification>
FIG. 8 is a side view showing a state in which the optical wiring unit 10 provided with the cable introduction part 80 according to the modification of the present embodiment is attached to the rack. In the optical wiring unit 10 of the present embodiment described above, the branch portion 2 is attached to the movable plate portion 82 of the cable introduction portion 80. However, in the optical wiring unit 10 provided with the cable introduction part 80 of this modification, the branching part 2 may be provided inside the housing 11 of the optical wiring unit 10. At this time, the movable plate portion 82 is provided with a cable fixing portion 89 that fixes the backbone optical fiber cable 1 to the movable plate portion 82. In this case, when the movable plate portion 82 is closed, the backbone optical fiber cable 1 is bent. Therefore, compared to the case where the inner optical fiber cable 3 having a diameter smaller than that of the backbone optical fiber cable 1 is bent, it is difficult to apply the bending. For this reason, the force which opens and closes the movable plate part 82 will increase. However, also in this modification, when the optical wiring unit 10 is arranged with high density with respect to the rack, the direction in which the backbone optical fiber cable 1 extends (rear direction) is the direction in which the optical wiring unit 10 is installed in the rack ( Therefore, the installation work of the optical wiring unit 10 on the rack can be facilitated.

=== Other Embodiments ===
The above-described embodiments are for facilitating 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.

1 trunk optical fiber cable, 2 branching section,
3 Internal optical fiber cable, 4 Internal optical connector plug (internal optical plug),
5 working side optical connector plug (working side optical plug), 6 working side optical fiber cable,
7 racks, 10 optical wiring units (optical junction boxes), 11 housings,
12 drawer part, 16 optical connector adapter (optical adapter, optical connector connection part),
20 optical fiber cable holder, 40 wiring identification unit,
42 identification part, 44 identification mark, 50 slide mechanism, 60 coupling mechanism,
80 cable introduction part, 81 introduction opening part, 82 movable plate part,
83 Hinge mechanism, 84 Plate body,
85 Plate side hinge member, 86 Housing side hinge member, 87 Shaft part,
88 Locking part, 89 Cable fixing part, 90 Leg part

Claims (10)

An optical wiring unit having a drawer portion including an optical connector connection portion and a housing for accommodating the drawer portion,
A cable introduction part for introducing an optical fiber cable connected to the optical connector connection part into the housing;
The cable introduction part is
A movable plate portion for fixing the optical fiber cable;
An optical wiring unit comprising: a hinge mechanism that enables the movable plate portion to rotate. The optical wiring unit according to claim 1,
An optical fiber cable having a plurality of optical fibers has a branch part that branches for each single optical fiber cable,
The optical wiring unit, wherein the branch portion is attached to the movable plate portion. The optical wiring unit according to claim 2,
The optical wiring unit, wherein the movable plate portion is provided to be inclined with respect to a direction perpendicular to a drawing direction of the drawing portion or a direction perpendicular to a pushing direction of the drawing portion. The optical wiring unit according to claim 1,
An optical wiring unit, wherein a direction of an axis around which the movable plate portion rotates is a direction perpendicular to a drawing direction of the drawing portion or a direction perpendicular to a pushing direction of the drawing portion. The optical wiring unit according to claim 4,
The hinge mechanism has a housing-side hinge member provided in the housing and a pair of plate-side hinge members provided in the movable plate portion,
A shaft portion that is a shaft on which the movable plate portion rotates is attached to the housing side hinge member,
The pair of plate-side hinge members are provided on opposite sides with respect to the movable plate portion, and the shaft portions are respectively inserted through the optical wiring unit. An optical wiring unit comprising a drawer portion provided with an optical connector connection portion, and a housing for accommodating the drawer portion;
A rack with an optical wiring unit having a rack capable of installing a plurality of the optical wiring units,
The optical wiring unit has a cable introduction part for introducing an optical fiber cable connected to the optical connector connection part into the housing,
The cable introduction part is
A movable plate portion for fixing the optical fiber cable;
A rack with an optical wiring unit, comprising: a hinge mechanism that enables the movable plate portion to rotate. It is a rack with an optical wiring unit according to claim 6,
The rack with an optical wiring unit, wherein the movable plate portion is provided to be inclined with respect to a direction perpendicular to a direction in which the optical wiring unit is installed with respect to the rack. A rack with an optical wiring unit according to claim 6 or 7,
The rack with an optical wiring unit, wherein the direction of the axis around which the movable plate portion rotates is a direction perpendicular to a direction in which the optical wiring unit is installed with respect to the rack. An optical wiring unit comprising a drawer portion provided with an optical connector connection portion, and a housing for accommodating the drawer portion;
A method of manufacturing a rack with an optical wiring unit, comprising: a rack capable of installing a plurality of the optical wiring units,
A cable introduction part for introducing an optical fiber cable connected to the optical connector connection part into the housing, a movable plate part for fixing the optical fiber cable, and a hinge for rotating the movable plate part Preparing the optical wiring unit comprising a mechanism;
A method of manufacturing a rack with an optical wiring unit, wherein the optical wiring unit is installed with respect to the rack after the movable plate portion is opened with respect to the housing by rotating the movable plate portion. . It is a manufacturing method of the rack with an optical wiring unit according to claim 9,
After the optical wiring unit is installed on the rack, the movable plate portion is closed with respect to the casing by rotating the movable plate portion.

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