JP2018156037A - Connection box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection box that facilitates optical fiber connection work and effectively prevents an optical fiber from popping out from a guide path along which the optical fiber is guided on an adapter.SOLUTION: A connection box 1 comprises an optical fiber guide part 30 that simultaneously guides and holds an optical fiber 14 on an adapter 40. The optical fiber guide part 30 includes a movable member 230 that defines a guide path 34 together with a guide wall 130. The guide wall 130 has: a curved wall 134; and a guide-wall projecting part 132 projecting in a Y direction at the entrance end 34A of the guide path 34 and projecting in an X direction at the exit end 34B thereof. The movable member 230 has: a movable-member projecting part 232 projecting in the Y direction at the entrance end 34A and projecting in the X direction at the exit end 34B; and four semi-circular part 234A defining a curved path 34C together with the curved wall 134. The movable-member projecting part 232 covers part of the optical fiber 14 together with the guide-wall projecting part 132 at the entrance end 34A and the exit end 34B.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a connection box, and particularly to a connection box that accommodates therein an adapter that connects different optical fibers.

  In order to allocate optical information transmitted from cables introduced from outside to indoors to each room in an apartment or building, the optical fiber in the cable and the optical fiber extending from each room are connected via an adapter. Has been done. Generally, such an adapter is housed in a case body called a connection box, and includes a plurality of input ports and output ports corresponding to the number of rooms. When connecting optical fiber to supply optical information to a room, after removing the lid of the connection box and exposing the adapter, plug one optical fiber into the corresponding input port and The optical fiber extending from the desired room is connected to the corresponding optical fiber by plugging the optical fiber into the corresponding output port.

  In general, such a connection box is provided with an extra length accommodating portion for accommodating an extra length of the optical fiber and an optical fiber derived from the extra length accommodating portion in order to facilitate an operation of connecting the optical fiber to the adapter. And a guide path for guiding the adapter to the adapter. In such an adapter, in order to further facilitate the optical fiber connection work, the input port and the output port may be configured to be rotatable with respect to the board. When it is moved, there is a problem that the optical fiber bends with this rotation and falls off the guide path. There is also a problem in that the optical fiber jumps out of the guide path when the connection box vibrates.

JP 2003-107251 A

  The present invention has been made in view of the problems of the prior art, and can easily connect an optical fiber, and the optical fiber protrudes from a guide path that guides the optical fiber to the adapter. An object of the present invention is to provide a junction box that is effectively suppressed.

  According to one aspect of the present invention, a connection box that can easily connect optical fibers and that effectively suppresses the optical fibers from jumping out from a guide path that guides the optical fibers to the adapter. Is provided. The connection box is fixed to the substrate, the adapter fixed to the substrate, and connects the first optical fiber and the second optical fiber, and fixed to the substrate, and accommodates the extra length of the first optical fiber. An extra length accommodating portion and an optical fiber guide portion that holds the first optical fiber while guiding the first optical fiber from the extra length accommodating portion to the adapter. The optical fiber guide portion is fixed to the substrate, extends in a depth direction perpendicular to the substrate, and is movably fixed to the substrate so as to be movable in a movable direction along the substrate. And a movable member that forms a guide path for guiding the first optical fiber to the adapter together with the guide wall in an approaching state. The guide wall protrudes in a movable vertical direction perpendicular to both the depth direction and the movable direction at the inlet end, and a curved wall positioned between the inlet end and the outlet end of the guide path in the movable direction. And a guide wall protrusion protruding in the movable direction at the outlet end. The movable member protrudes in the movable vertical direction at the inlet end, and a movable member protruding portion that protrudes in the movable direction at the outlet end, and at least a part of the guide path together with the curved wall of the guide wall. A curved portion that forms a curved path. The movable member projecting portion covers a part of the first optical fiber together with the guide wall projecting portion at the entrance end and the exit end of the guide path.

  According to such a configuration, both the inlet end and the outlet end of the guide path are completely covered by the guide wall protruding portion and the movable member protruding portion, so that the depth direction of the first optical fiber is reached. Is restricted by the guide wall protrusion and the movable member protrusion, so that the first optical fiber is prevented from dropping out of the guide path.

  Moreover, since the space | interval between a guide wall and a movable member can be expanded by moving a movable member, a 1st optical fiber can be easily arrange | positioned to a guide path. Further, since the guide path includes a curved path, the first optical fiber can be guided to the adapter through the curved path. As described above, the first optical fiber can be easily arranged in the guide path, and the first optical fiber can be guided to the adapter through the curved path, so that the optical fiber can be easily connected. Can be done.

  Here, in the approaching state, at least one of the inlet end and the outlet end, the guide wall protrusion and the movable member protrusion may overlap in the depth direction. Alternatively, in the approaching state, at least one of the inlet end and the outlet end, the guide wall protruding portion and the movable member protruding portion may contact each other in the movable direction. With such a configuration, it is possible to more effectively suppress the first optical fiber from falling off the guide path.

  Further, the tip of the movable member protruding portion that protrudes in the movable vertical direction at the inlet end may be bent toward the substrate. Such a configuration effectively suppresses the first optical fiber from jumping out in the movable vertical direction.

  Here, the depth direction may be a horizontal direction. Thereby, it becomes possible to install the connection box on the wall (that is, vertically). The depth direction may be a vertical direction. This makes it possible to install the connection box on the floor (that is, horizontally).

  According to the present invention, since both the inlet end and the outlet end of the guide path are completely covered by the guide wall protruding portion and the movable member protruding portion, the light is guided from the guide path that guides the optical fiber to the adapter. It is possible to effectively suppress the fiber from jumping out. Further, since the optical fiber can be easily arranged in the guide path by moving the movable member, and the optical fiber can be guided to the adapter through the guide path, the optical fiber can be easily connected. it can.

FIG. 1 is a perspective view showing a junction box according to an embodiment of the present invention. FIG. 2 is a front view of the connection box shown in FIG. 1 with the cover removed. FIG. 3 is a perspective view showing a guide wall of the optical fiber guide portion shown in FIG. 4A is a front perspective view showing a movable member of the optical fiber guide portion shown in FIG. FIG. 4B is a rear perspective view showing the movable member shown in FIG. 4A. FIG. 5 is a front view showing a separated state of the optical fiber guide portion shown in FIG. FIG. 6 is a front view showing an approaching state of the optical fiber guide portion shown in FIG.

  Hereinafter, an embodiment of a junction box according to the present invention will be described in detail with reference to FIGS. 1 to 6. 1 to 6, the same or corresponding components are denoted by the same reference numerals, and redundant description is omitted. Moreover, in FIG. 1 to FIG. 6, the scales and dimensions of each component are exaggerated and some components may be omitted.

  FIG. 1 is a perspective view showing a junction box 1 according to an embodiment of the present invention. As shown in FIG. 1, the connection box 1 connects a cable 12 introduced indoors from the outside and a cable 17 extending from each room such as an apartment house or a building, and transmits optical information transmitted from the cable 12 to each of the cables. For distributing to rooms. The connection box 1 is fixed to a wall surface 900 in an apartment house or a building. Here, in this specification, the Y direction corresponds to the vertical direction of the wall surface 900, the + Y direction side is the upper side in the vertical direction of the wall surface 900, and the −Y direction side is the lower side in the vertical direction of the wall surface 900. Each corresponds.

  As shown in FIG. 1, the junction box 1 includes a substrate 10 extending in the X direction and the Y direction, and a cover 11 that covers the + Z direction side of the substrate 10. The substrate 10 is formed of a substantially square plate member. The cover 11 extends in the Z direction (depth direction) perpendicular to the substrate 10, and a frame portion 11A extending from the edge of the substrate 10 in the + Z direction and a lid portion 11B that closes the + Z direction side of the frame portion 11A are integrated. It has a structure formed automatically. With such a configuration, an accommodation space for accommodating an adapter, an optical fiber, and the like is formed between the substrate 10 and the cover 11. As shown in FIG. 1, the cable 12 introduced indoors from the outside is introduced into the housing space, and the cables 17 connected to the indoor rooms are led out.

  FIG. 2 is a plan view showing the connection box 1 with the cover 11 of the connection box 1 shown in FIG. 1 removed. As shown in FIG. 2, screw holes 15 are formed in the four corners of the substrate 10 of the connection box 1, and the substrate 10 is formed with screw holes (not shown) formed in the screw holes 15 and the wall surface 900. ) And the screw 2 are screwed together.

  As shown in FIG. 2, the substrate 10 includes a plurality of optical fibers 14 (first optical fibers) of the cable 12 and a plurality of optical fibers 13 (second optical fibers) of the cable 17, which are located at the center of the substrate 10. An optical fiber 14), an extra length accommodating portion 20 around which the optical fiber 14 is wound so that the extra length of the optical fiber 14 is accommodated, and an optical fiber derived from the extra length accommodating portion 20. And a plurality of optical fiber holders for holding the optical fibers 13 and guiding them to the adapter 40 while winding the optical fibers 13 of the cable 17. 60 and an optical fiber 13 that is not connected to the adapter 40 among the plurality of optical fibers 13 (hereinafter, such an optical fiber 13 is referred to as “unconnected optical fiber 13A”). A plurality of optical fiber holding structure 50 is provided. That is, the junction box 1 further includes a surplus length accommodating portion 20, an optical fiber guide portion 30, an adapter 40, a plurality of optical fiber holders 60, and a plurality of optical fiber holding structures 50.

  As shown in FIG. 2, the cable 12 introduced indoors from the outside is introduced into the connection box 1 from the lower right side of the connection box 1. Further, an extra length accommodating portion 20 for accommodating extra lengths of a plurality of optical fibers 14 (first optical fibers) included in the cable 12 is provided on the −X direction side (right side in FIG. 2) of the substrate 10. It has been. The surplus length accommodating portion 20 includes a first wall portion 21A standing on the + X direction side in the surplus length accommodating portion 20 and a second wall portion 21B standing on the −X direction side. .

  As shown in FIG. 2, the first wall portion 21 </ b> A has a substantially elliptical outer shape extending in the Y direction, and a wall is provided on the −X direction side over substantially the entire length in the Y direction. Absent. The second wall portion 21B is erected at a position spaced apart from the first wall portion 21A on the −X direction side of the first wall portion 21A, and has a linear outer shape extending in the Y direction. . The second wall portion 21B is formed so that the total length in the Y direction is slightly shorter than the total length in the Y direction of the first wall portion 21A. With such a configuration, an introduction portion 23 for introducing a cable, an optical fiber, or the like into the surplus length accommodating portion 20 is formed on the lower right side of the surplus length accommodating portion 20 in FIG. A lead-out portion 24 that leads out from the long accommodating portion 20 is formed.

  As shown in FIG. 2, the cable 12 is introduced into the surplus length accommodating portion 20 from the introduction portion 23 of the surplus length accommodating portion 20. The plurality of optical fibers 14 of the cable 12 are exposed from the cable 12 at the introduction portion 23. These exposed optical fibers 14 are wound along the first wall portion 21A and the second wall portion 21B of the surplus length accommodating portion 20, and then, from the lead-out portion 24 to the outside of the surplus length accommodating portion 20. Derived. In this way, by winding the optical fiber 14 by the necessary number of turns in the extra length accommodating portion 20, the extra length of the optical fiber 14 is absorbed and the optical fiber 14 is adjusted to an appropriate length.

  A plurality of projecting portions 22 projecting toward the inner side of the extra length accommodating portion 20 are formed on the top portions (the portions on the + Z direction side) of the first wall portion 21A and the second wall portion 21B. The protruding portion 22 prevents the optical fiber 14 from dropping from the extra length accommodating portion 20 (so as not to jump out).

  As shown in FIG. 2, the plurality of optical fibers 14 led out from the lead-out part 24 of the surplus length accommodating part 20 are bundled by the silicon tube 16 in the lead-out part 24. The silicon tube 16 is guided toward the adapter 40 provided at the central portion of the substrate 10 while being held in the + Y direction side portion of the substrate 10 by an optical fiber guide portion 30 described in detail later.

  As shown in FIG. 2, the plurality of optical fibers 14 are exposed from the silicon tube 16 led out from the optical fiber guide portion 30 (that is, guided toward the central portion of the substrate 10). A connector 18 is connected to each end of the optical fiber 14. On the other hand, input ports 41 corresponding to the number of the plurality of optical fibers 14 led out from the optical fiber guide portion 30 are provided in the upper half of the adapter 40 located at the center of the substrate 10. Then, the optical fiber 14 is connected to the adapter 40 by inserting the connector 18 of the optical fiber 14 into the input port 41 of the corresponding adapter 40.

  On the other hand, as shown in FIG. 2, the cable 17 extending inside the apartment house or building is introduced into the connection box 1 from the lower left side of the substrate 10, and a plurality of optical fibers 13 are exposed at the tip side. Yes. A connector 19 is connected to each exposed tip of the optical fiber 13.

  As shown in FIG. 2, a plurality of (two in the present embodiment) optical fiber holders 60 are provided on the lower left side of the substrate 10. Each of the optical fiber holders 60 has a cylindrical surface 62, and each of the exposed optical fibers 13 is wound around the cylindrical surface 62 of the optical fiber holder 60. As a result, the optical fiber 13 is guided from the side relatively close to the substrate 10 (−Z direction side) to the side relatively far (+ Z direction side), that is, the side close to the operator.

  As shown in FIG. 2, the lower half of the adapter 40 is provided with a number of output ports 42 corresponding to the number of optical fibers 13. According to this embodiment, since the optical fiber holder 60 described above is provided on the substrate 10, the operator adjusts the optical fiber 13 to an appropriate length with the optical fiber holder 60, and then the optical fiber 13. The (connector 19) can be fitted into the corresponding output port 42. As a result, the optical fiber 13 is connected to the adapter 40.

  Thus, according to the junction box 1 according to the present invention, the optical fiber 13 (second optical fiber) extending from a certain room and the optical fiber 14 (first optical fiber) corresponding to the optical fiber 13 are provided. By being connected via the adapter 40, the optical information transmitted from the cable 12 is transmitted to a predetermined room.

  As shown in FIG. 2, the input port 41 and the output port 42 corresponding to each other are fixed to a plate-like member 44 provided between a pair of side walls 45, 45. The plate-like member 44 is rotatably attached to the pair of side walls 45 and 45 through an axis that penetrates the end portion on the + Y direction side in the X direction. Therefore, by rotating the plate-like member 44, the insertion port of the output port 42 can be directed to the operator side, so that the optical fiber 13 (connector 19) can be easily fitted into the output port 42. it can.

  Incidentally, a plurality (two in this embodiment) of optical fiber holding structures 50 are provided on the upper left side of the substrate 10 in FIG. The optical fiber holding structure 50 is configured so that the optical fiber 13 can be suspended and held. More specifically, when there is an unconnected optical fiber 13A that does not need to be connected to the adapter 40, such as when there is a vacant room indoors or a room where optical information from the cable 12 is not desired, these unconnected The optical fiber 13A can be suspended by being suspended from the optical fiber retaining structure 50.

  As shown in FIG. 2, each of the optical fiber holding structures 50 includes a fixed portion 70 fixed to the substrate 10 and a rotating portion 80 pivotally supported by the fixed portion 70. . The rotating unit 80 is pivotally supported by the fixed unit 70 so that the rotating unit 80 can rotate 90 ° from a state parallel to the substrate 10 (the state shown in FIG. 2). A reel-shaped cylindrical portion 84 is provided on the + Y direction side (tip portion) in the state of FIG.

  As shown in FIG. 2, the above-described unconnected optical fiber 13 </ b> A is wound along the upper half of the cylindrical surface 84 </ b> A of the cylindrical portion 84. As a result, the unconnected optical fiber 13A is guided from the side relatively close to the substrate 10 (−Z direction side) to the side far from the side (+ Z direction side), and suspended from the cylindrical portion 84 and retained. Is done. That is, it is suspended in a state where it is suspended from the cylindrical portion 84 on the side close to the worker (+ Z direction side). Thus, since the unconnected optical fiber 13A is reserved on the side closer to the worker, the worker can easily identify the desired unconnected optical fiber 13A.

  Further, as described above, the optical fiber holding structure 50 is configured such that the rotating unit 80 can be rotated 90 ° from the state of FIG. Therefore, when an operator who connects the optical fiber connects the unconnected optical fiber 13 </ b> A to the output port 42, the operator can pull the rotating portion 80 closer to the operator by rotating 90 °. The connection work to the output port 42 can be easily performed.

  Incidentally, as described above, according to the present embodiment, the connector 19 can be easily fitted into the output port 42 by rotating the plate-like member 44 of the adapter 40. However, when the plate-like member 44 is rotated in this way, the optical fiber 14 connected to the input port 41 bends along with the rotation, and comes off from the guide portion that holds the optical fiber 14 (silicon tube 16). There is a risk that. Similarly, even when the junction box 1 is shaken with the shaking of the building, the optical fiber 14 (silicon tube 16) may be detached from the guide portion. However, since the junction box 1 according to the present invention includes the optical fiber guide portion 30 described in detail below, the optical fiber 14 (silicon tube 16) is effectively suppressed from being detached from the optical fiber guide portion 30. Is done.

  As shown in FIG. 2, such an optical fiber guide portion 30 includes a guide wall 130 fixed to the substrate 10 and a movable member 230 movably fixed to the substrate 10. Here, FIG. 3 is a perspective view showing such a guide wall 130, and shows a state before the movable member 230 is attached to the substrate 10.

  As shown in FIGS. 2 and 3, the guide wall 130 includes a wall main body 131 erected in the + Z direction (depth direction) from the substrate 10 and a guide wall protrusion 132 protruding from the wall main body 131. . As a whole, the wall main body 131 extends in the vicinity of the edge on the + Y direction side of the substrate 10 along the X direction. Such a wall body 131 has a straight wall 133 extending in the + X direction from the end portion on the −X direction side of the wall body 131, and a substantially quarter-circular shape curved from the end portion on the + X direction side of the straight wall 133. And a curved wall 134 formed. On the other hand, the guide wall protrusion 132 includes a first protrusion 135 protruding in the −Y direction from an end portion on the −X direction side of the wall body 131 and an end portion on the + X direction side of the wall body 131 (curved wall 134). And a second protrusion 136 protruding in the −X direction.

  Here, FIG. 4A is a front perspective view showing the movable member 230, and FIG. 4B is a rear perspective view showing the movable member 230. As shown in FIG. 2, FIG. 4A, and FIG. 4B, the movable member 230 includes a main body portion 231 and a movable member protruding portion 232 that protrudes from the main body portion 231.

  As shown in FIGS. 2, 4A, and 4B, the main body portion 231 extends in the X direction as a whole at a position slightly on the −Y direction side of the linear wall 133 of the wall main body 131 of the guide wall 130. Yes. The main body 231 has a hollowed central portion for weight reduction. The flat surface portion 231A extends linearly on the −X direction side of the main body portion 231 and the + X direction side end portion of the flat surface portion 231A. And a semicircular portion 234 connected to the. As shown in FIG. 4B, an engagement protrusion 237 protrudes from the back surface 234 </ b> B of the semicircular portion 234.

  As shown in FIGS. 2, 4A, and 4B, the movable member protruding portion 232 includes a first protruding portion 235 protruding in the + Y direction from the vicinity of the central portion in the X direction of the flat portion 231A, and a semicircular portion 234. And a second convex portion 236 projecting in the + X direction. As shown in FIGS. 4A and 4B, the first protrusion 235 includes a first protrusion 235A protruding in the + Y direction (see FIG. 2) from the flat surface 231A, and a substrate from the tip of the first protrusion 235A. And a second projecting piece 235B projecting to the 10 side (-Z direction). The first convex portion 235 is formed so that the position in the Z direction is the same as the position in the Z direction of the first protrusion 135 of the guide wall 130.

  As shown in FIG. 2, the second convex part 236 protrudes in the + X direction from the central part in the Y direction of the semicircular part 234. The second convex portion 236 is formed such that the position in the Y direction is the same as the position in the Y direction of the second protrusion 136 of the guide wall 130. That is, the 2nd convex part 236 and the 2nd protrusion 136 are formed so that it may mutually extend on a straight line along a X direction. The second convex portion 236 is formed so as to be located on the −Z direction side with respect to the position in the Z direction of the second protrusion 136.

  As shown in FIGS. 4A and 4B, the movable member 230 further includes an auxiliary convex portion 239 protruding from the tip of the flat portion 231A. The auxiliary convex part 239 is a first part extending in a direction perpendicular to the flat part 231A (Y direction in FIG. 2) from the edge opposite to the edge part of the flat part 231A from which the first convex part 235 extends. It has an auxiliary convex part 239A and a second auxiliary convex part 239B extending from the tip of the first auxiliary convex part 239A in a direction (Z direction) parallel to the plane part 231A.

  As shown in FIG. 4B, an engaging protrusion 237 protrudes from the back surface 234B of the semicircular portion 234. The engaging protrusion 237 has a substantially rectangular parallelepiped protrusion body 237A and both sides of the central portion of the protrusion body 237A. And an expansion portion 237B that expands at the same time. More specifically, the protrusion main body 237A extends in the radial direction of the semicircular portion 234 from the center of the semicircular portion 234 so as to divide the semicircular portion 234 into two equal parts. That is, the protrusion main body 237A extends in the direction in which the second convex portion 236 extends (X direction in FIG. 2). The extending portion 237B is formed so as to extend from both sides of the central portion in the direction in which the second convex portion 236 extends in a direction perpendicular to the direction in which the second convex portion 236 extends (Y direction in FIG. 2). ing.

  Referring again to FIGS. 2 and 3, a slit 238 extending along the X direction is formed in the vicinity of the edge on the −X direction side and the + Y direction side slightly from the central portion in the X direction of the substrate 10. The position of the slit 238 in the Y direction and the position of the guide wall 130 in the Y direction with the second protrusion 136 are substantially the same, and the slit 238 and the second protrusion 136 are straight along the X direction. It extends on the line. As shown in FIG. 3, such a slit 238 is cut in the + Y direction and the −Y direction at a slit region 238A extending in the X direction and at a position shifted from the central portion in the X direction of the slit region 238A to the −X direction side. And a notch region 238B.

  5 and 6 are enlarged plan views showing the vicinity of the optical fiber guide portion 30 in an enlarged manner. The outer shape of the notch region 238B described above is formed to be slightly larger than the outer shape of the extended portion 237B (see FIG. 4B) of the engaging protrusion 237 described above. Therefore, the extended portion 237B of the movable member 230 can be positioned on the back side of the substrate 10 through the cutout region 238B. The total length in the Y direction of the slit region 238A is slightly longer than the total length in the Y direction of the projection main body 237A. Therefore, the protrusion main body 237A (movable member 230) can be moved along the slit region 238A by positioning the extended portion 237B on the back side of the substrate 10 (see FIG. 6). That is, the movable member 230 can slide along the X direction (movable direction) from a separated state separated from the guide wall 130 (see FIG. 5) to an approached state approached to the guide wall 130 (see FIG. 2). . In such a sliding state, since the substrate 10 is sandwiched between the semicircular portion 234 and the extension portion 237B of the movable member 230, the movable member 230 is detached from the substrate 10. Is prevented.

  In the separated state shown in FIG. 5, the end portion 234 </ b> C on the −Y direction side of the semicircular portion 234 is in contact with the end portion 25 on the + Y direction side of the first wall portion 21 </ b> A of the surplus length accommodating portion 20. However, the end portion 25 of the extra length accommodating portion 20 is located at a position slightly shifted to the + X direction side from the cutout region 238B of the slit 238. With such a configuration, since the sliding of the movable member 230 in the −X direction is restricted by the end portion 25, the movable member 230 reaches the position of the notch region 238B (that is, the movable member 230 is a substrate). 10).

  As described above, the movable member 230 can be slid along the slit region 238A (that is, along the X direction). More specifically, as shown in FIG. 6, it can slide in the X direction (movable direction) from the separated state (see FIG. 5) toward the guide wall 130. When the movable member 230 is slid in this way, as described above, the planar portion 231A of the movable member 230 has the same position in the Z direction (depth direction) as the first protrusion 135 of the guide wall 130, And since the 1st convex part 235 extended in -Y direction is provided, the 1st convex part 235 extended in + Y direction and the 1st protrusion 135 extended in -Y direction contact | abut in X direction. Further, as described above, the semicircular portion 234 of the movable member 230 has the same position in the Y direction (movable vertical direction) as that of the second protrusion 136 of the guide wall 130 and the second protrusion 136. Since the second protrusion 236 is provided at a position closer to the −Z direction than the second protrusion 236 extending in the + X direction and the second protrusion 136 extending in the −X direction, The protrusions 236 overlap in the Z direction so as to be positioned on the −Z direction side (side closer to the substrate 10) of the second protrusion 136. As described above, the first protrusion 135 and the first protrusion 235 are in contact with each other in the X direction, and the second protrusion 136 and the second protrusion 236 overlap in the Z direction. It will be the approach state shown.

  As shown in FIG. 2, in this approaching state, the portion where the first protrusion 135 and the first protrusion 235 abut is the entrance end 34A, and the second protrusion 136 and the second protrusion 236 Is formed between the wall body 131 of the guide wall 130 and the body portion 231 of the movable member 230. This guide path 34 is a quadrilateral shape formed between the curved wall 134 of the wall main body 131 and the quarter-circular portion 234A (curved portion) located on the + Y direction side of the semicircular portion 234 of the main body portion 231. A curved path 34C is included.

  With such a configuration, the optical fiber 14 (silicon tube 16) led out from the lead-out portion 24 of the surplus length accommodating portion 20 is introduced into the guide path 34 from the inlet end 34 </ b> A, and exits through the curved path 34 </ b> C of the guide path 34. By being led out of the guide path 34 from the end 34B, it is guided toward the input port 41 of the adapter 40. More specifically, the silicon tube 16 is introduced into the guide path 34 through the inlet end 34A, and is led out from the guide path 34 through the outlet end 34B. In other words, the first protrusion 135 and the first protrusion 235 are introduced into the guide path 34 through the lower side (−Z direction side), and the second protrusion 136 and the second protrusion 236 are introduced. Is led out from the guide path 34 through the lower side (−Z direction side).

  Here, when a part of the silicon tube 16 is accommodated in the guide path 34, the movable member 230 is slid in the −X direction to be in the separated state shown in FIG. , The silicon tube 16 is inserted from between the guide wall 130 and the movable member 230 which are largely separated, and then the movable member 230 is slid in the + X direction (see FIG. 6). The silicon tube 16 can be easily accommodated in the guide path 34 (see FIG. 2).

  As described above, according to the optical fiber guide portion 30 according to the present invention, both the inlet end 34A and the outlet end 34B of the guide path 34 formed between the guide wall 130 and the movable member 230 are guided by the guide wall. Since the guide wall protrusion 132 and the movable member protrusion 232 are completely covered, the plate-like member 44 of the adapter 40 is rotated when the optical fiber 13 is connected to the output port 42. Even if the optical fiber 14 (silicon tube 16) bends due to the connection box 1 shaking, the deflection of the optical fiber 14 (silicon tube 16) is regulated by the inlet end 34A and the outlet end 34B. It is effectively suppressed that the fiber 14 (silicon tube 16) is detached from the guide path 34.

  Moreover, according to the optical fiber guide part 30 which concerns on this invention, since the guide path 34 contains the curved path 34C mentioned above, the optical fiber 14 (silicon tube 16) passes along this curved path 34C of the adapter 40. Since it is guided up to the input port 41 (+ Y direction side), the optical fiber 14 can be easily inserted into the input port 41.

  Moreover, since the space | interval between the guide wall 130 and the movable member 230 can be expanded by sliding the movable member 230 to -X direction, the optical fiber 14 (silicon tube 16) is easily accommodated in the guide path 34. FIG. be able to.

  Further, as described above, the first protrusion 235 has the second protrusion 235B extending in the −Z direction (substrate 10 side) from the tip of the first protrusion 235A. The optical fiber 14 (silicon tube 16) is effectively prevented from jumping out in the + Y direction at the inlet end 34A. Furthermore, an auxiliary convex portion 239 including a second auxiliary convex portion 239B protruding in the + Z direction from below the silicon tube 16 (−Z direction side) is provided on the −X direction side of the first convex portion 235. Therefore, the second auxiliary projection 239B more effectively suppresses the silicon tube 16 from jumping out in the + Y direction.

  In the above-described embodiment, the first protrusion 135 (guide wall protrusion 132) and the first protrusion 235 (movable member protrusion 232) at the inlet end 34A of the guide path 34 are in the X direction (movable direction). However, the first protrusion 135 and the first protrusion 235 may overlap each other in the Y direction (depth direction) at the inlet end 34A.

  In the above-described embodiment, the second protrusion 136 (guide wall protrusion 132) and the second protrusion 236 (movable member protrusion 232) at the outlet end 34B of the guide path 34 are in the Y direction (depth direction). However, the second protrusion 136 and the second protrusion 236 may be in contact with each other in the X direction (movable direction) at the outlet end 34B.

  In the above-described embodiment, the second protrusion 235B extending in the −Z direction is formed on the first convex portion 235 in order to suppress the optical fiber 14 from jumping out in the + Y direction. It is not necessary to form the two protruding pieces 235B. Similarly, although the auxiliary protrusion 239 is provided on the movable member 230 in order to suppress the optical fiber 14 from jumping out in the + Y direction, it is not necessary to provide such an auxiliary protruding piece.

  In the above-described embodiment, the connection box 1 is described as being installed on the wall surface 900 (that is, in the vertical direction). However, the connection box 1 may be installed on the floor (that is, in the horizontal direction). Needless to say.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and it goes without saying that the present invention may be implemented in various forms within the scope of the technical idea.

  Note that the terms “lower”, “upper”, “upper”, “lower”, “upper”, “lower”, and other positional relationships used in this specification are related to the illustrated embodiment. And is changed depending on the relative positional relationship of the apparatus.

DESCRIPTION OF SYMBOLS 1 Connection box 2 Screw 10 Board | substrate 11 Cover 11A Frame part 11B Cover part 12 1st cable 13 2nd optical fiber 13A Unconnected optical fiber 14 1st optical fiber 15 Screw hole 16 Silicon tube 17 2nd cable 18 Connector DESCRIPTION OF SYMBOLS 19 Connector 20 Extra length accommodating part 21A 1st wall part 21B 2nd wall part 22 Projection part 23 Introduction part 24 Derivation part 25 End part 30 Optical fiber guide part 34 Guide path 34A Inlet end 34B Outlet end 34C Curved path 40 Adapter 41 Input Port 42 Output Port 44 Plate Member 45 Side Wall 50 Optical Fiber Retaining Structure 60 Optical Fiber Holder 62 Cylindrical Surface 70 Fixed Portion 80 Rotating Portion 84 Cylindrical Portion 84A Cylindrical Surface 130 Guide Wall 131 Wall Main Body 132 Guide Wall Protrusion 133 Straight Line Wall 134 Curved wall 135 First protrusion 136 Second protrusion 30 movable member 231 body portion 231A plane portion 232 movable member protrusion 234 semicircular portion 234A quarter round portion (curved portion)
234B Rear surface 234C End portion 235 First protrusion 235A First protrusion 235B Second protrusion 236 Second protrusion 237 Engaging protrusion 237A Protrusion main body 237B Expansion section 238 Slit 238A Slit area 238B Notch area 239 Auxiliary Convex part 239A First auxiliary convex part 239B Second auxiliary convex part 900

Claims (6)

A substrate,
An adapter fixed to the substrate and connecting the first optical fiber and the second optical fiber;
An extra-length accommodating portion that is fixed to the substrate and accommodates an extra length of the first optical fiber;
An optical fiber guide portion for holding the first optical fiber while guiding the first optical fiber from the extra length accommodating portion to the adapter;
The optical fiber guide part is
A guide wall fixed to the substrate and extending in a depth direction perpendicular to the substrate;
A guide path is formed which is movably fixed to the substrate so as to be movable in a movable direction along the substrate and guides the first optical fiber to the adapter together with the guide wall in an approaching state approaching the guide wall. And a movable member
The guide wall is
A curved wall located between an inlet end and an outlet end of the guide path in the movable direction;
A guide wall protrusion that protrudes in the movable vertical direction perpendicular to both the depth direction and the movable direction at the inlet end, and protrudes in the movable direction at the outlet end;
The movable member is
A movable member projecting portion projecting in the movable vertical direction at the inlet end and projecting in the movable direction at the outlet end;
A curved portion that forms a curved path in at least a part of the guide path together with the curved wall of the guide wall;
The movable member projecting portion covers a part of the first optical fiber together with the guide wall projecting portion at the entrance end and the exit end of the guide path,
Connection box.   2. The junction box according to claim 1, wherein in the approaching state, at least one of the inlet end and the outlet end, the guide wall protruding portion and the movable member protruding portion overlap in the depth direction.   3. The junction box according to claim 1, wherein in the approaching state, at least one of the inlet end and the outlet end, the guide wall protruding portion and the movable member protruding portion are in contact with each other in the movable direction.   The junction box according to any one of claims 1 to 3, wherein a tip of a portion of the movable member projecting portion that projects in the movable vertical direction at the entrance end is bent toward the substrate.   The junction box according to any one of claims 1 to 4, wherein the depth direction is a horizontal direction.   The junction box according to any one of claims 1 to 4, wherein the depth direction is a vertical direction.

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