JP4281599B2 - Optical fiber wiring equipment - Google Patents

Description

  The present invention relates to an optical fiber wiring device using an optical outlet for connecting an optical fiber cable introduced into a wall or under a floor of a construction structure.

From an optical outlet that installs an optical fiber cable that penetrates the construction structure into a box embedded in the wall of the construction structure and attaches to the box with a standardized mounting frame in the same manner as an embedded electrical wiring device An optical fiber wiring device is conventionally provided. (Patent Document 1)
Japanese Patent No. 2793183 (FIG. 1 (a))

  In the optical fiber wiring equipment that attaches an optical outlet to the box embedded in the wall as described above, it takes time to process the extra length of the optical fiber cable in order to satisfy the optical communication characteristics without impairing the signal transmission characteristics of the optical fiber cable. The construction was complicated. In addition, a switch box having a size larger than a switch box used for a normal wiring device is used in order to consider the extra length processing and securing the allowable minimum curvature radius of the optical fiber cable.

  Therefore, the optical fiber cable can be easily connected to the receptacle for the optical fiber of the optical outlet without impairing the signal transmission characteristics of the optical fiber cable, and it is easy to perform uniform installation with no variation by the installer, and the number of parts There has been a demand for an optical fiber wiring device that can reduce the cost.

  Therefore, the present applicant fixes an optical outlet attached to a mounting frame corresponding to a switch box and the like, and an optical fiber cable connected to the optical fiber receptacle of the optical outlet, and winds the optical outlet with a radius of curvature greater than the allowable minimum radius of curvature of the optical fiber cable. An optical fiber wiring device comprising a winding body and a holding body that holds the winding body and is detachably attached to the body has already been filed (Japanese Patent Application No. 2003-299096). In the device, after the winding body is stored in the holding body, the entire device is stored in the mounting hole of the switch box or the like while the extra length of the optical fiber cable is wound around the holding body outer periphery. As the number of wraps around the cable increases, wrap it around the outside of the wiring device With site protrusion, in some cases no longer enter the result mounting hole.

  The present invention has been made in view of the above-mentioned problems, and the object of the present invention is to easily wrap the excess length of the optical fiber cable and to store it in a mounting hole of a small switch box or the like. An object of the present invention is to provide an optical fiber wiring device.

In order to achieve the above-mentioned object, the invention of claim 1 has a receptacle main body attached to a mounting hole opened in the construction structure and a plug connection port provided in the receptacle main body and facing the front side of the receptacle main body. An optical outlet provided with an optical fiber receptacle, and a pair of winding portions formed with a circumferential winding surface having a radius of curvature equal to or larger than an allowable minimum radius of curvature of the optical fiber cable, and wired inside the construction structure, the optical fiber An optical fiber cable connected to the receptacle for the cable is wound and stored in a figure 8 between both winding parts, and is provided with a winding body attached to the rear side of the outlet body, and between the outlet body and the winding body And a groove-shaped wrap around the excess length of the optical fiber cable Is provided with a section, the winding of the pair is in a state of attaching the winding body rear side of the outlet body, are provided on the winding body so as to be aligned in the longitudinal direction of the outlet body, the pair One of the winding portions of the outlet body is an introduction side of an optical fiber cable connected to the optical fiber receptacle of the outlet body, and the other is a winding portion for starting the winding of the optical fiber cable. It is arranged between the introduction part of the optical fiber cable and the winding part for starting the winding, and is provided with a latching claw for hooking the introduced optical fiber cable before starting the winding to the winding part. .

  According to the first aspect of the present invention, since the extra space is wound around the extra length winding groove using the dead space, the extra length portion of the optical fiber cable can be easily wound and can be housed and attached to an attachment hole of a small switch box or the like. It becomes.

According to a second aspect of the present invention, there is provided an optical outlet provided with an optical fiber receptacle having an outlet main body attached to an attachment hole opened in a construction structure and a plug connection port provided in the outlet main body and facing the front side of the outlet main body. An optical fiber cable provided with a pair of winding portions formed with a circumferential winding surface having a radius of curvature equal to or larger than an allowable minimum radius of curvature of the optical fiber cable and wired inside the construction structure and connected to the optical fiber receptacle A winding body that is wound and stored in a figure 8 between both winding sections and attached to the rear side of the outlet body, and is wound for extra length in which an extra length portion of the optical fiber cable is wound around the back surface of the winding body It is provided with a section, a pair of the winding portion, the rear surface of the outlet body With the winding body attached to the outlet body, the winding body is provided so as to be aligned in the longitudinal direction of the outlet body, and one of the pair of winding portions is connected to the optical fiber receptacle of the outlet body. An optical fiber cable introduction side and the other is an optical fiber cable winding start winding part, and the introduction side winding part is disposed between the optical fiber cable introduction part and the winding start winding part. A hooking claw is provided for hooking the introduced optical fiber cable before starting to wind around the winding portion .

  According to the invention of claim 2, since the extra length portion of the optical fiber cable is wound around the extra length winding groove provided at the bottom of the winding body, the extra length portion of the optical fiber cable can be easily wound and a small switch box, etc. It is possible to store and attach to the mounting holes.

  The present invention has an effect that the extra length portion of the optical fiber cable can be easily wound and can be housed in a mounting hole such as a small switch box.

  Embodiments of the present invention will be described below.

(Embodiment 1)
The optical fiber wiring device of the present embodiment is a large standardized by JIS as shown in FIGS. 1 (a) to 1 (c), 2 (a), 2 (b), 3 (a) and 3 (b). Three square module wiring devices can be attached, for example, the body 2 formed with dimensions of three modules that can be attached to a metal mounting frame 7 and the front part of the body 2 can be opened and closed. An optical outlet 1 composed of an outlet body consisting of a cover 3 pivotally supported by the optical fiber receptacle 4 and an optical fiber receptacle 4 attached to the cover 3, and an optical fiber cable 8 connected to the optical fiber receptacle 4 is wound in a figure 8 shape. A winding case 5 which is a winding body integrally provided with a pair of winding portions 50a and 50b, a decorative cover 6 corresponding to the mounting frame 7, and a decorative plate 30 (described later) Consisting of 6 (f) see).

  The body 2 comprising the main body of the optical outlet 1 and the cover 3 with the cover 3 is a synthetic resin molded body having a substantially rectangular parallelepiped shape with the vertical direction being the longitudinal direction, and the upper half is open on the rear side. The front side is almost entirely open. The vertical positions of the outer surfaces of the left and right side walls 2a, 2a correspond to the mounting pieces 70 that protrude backward from the vertical positions of the both side frame pieces of the mounting frame 7, respectively, and are engaged with the locking holes 70a of the mounting pieces 70 from the inside. Locking projections 9 that are fixed and fixed to the mounting pieces 70 by caulking deformation of the mounting pieces 70 are provided, and the body 2 is fixed to the mounting frame 7 by fixing these locking protrusions 9 to the mounting pieces 70. It is supposed to be fixed.

  Further, a bearing portion 12 is formed on the front end surface located above the upper opening edge of the front opening portion 10 so as to protrude forwardly by supporting the rotation shaft 11 of the cover 3 by inserting it in the left and right directions.

  Further, as shown in FIGS. 4 (a) and 4 (b), the bottom portion of the body 2 is composed of double bottom walls 2b and 2c, and the front end of the upper bottom wall 2b extends downward, and the central portion of the extension wall. Are connected to the front end of the bottom wall 2b only on both sides of the upper end portion of the central portion, and the central portion can be freely bent rearward and downward with this connecting portion as a center. Further, a locking hole 13b is provided between the connecting portions on both sides for releasably locking the locking protrusion 3d provided at the center of the lower end of the cover 3. The operation part 13 for pop-up is comprised by this latching hole 13b and the elastic part 13a which consists of the said center part.

  Further, a four-sided wall 14 for abutting and supporting the lower front surface of the winding case 5 is provided at the center of the rear surface of the rear wall 2d covering the lower half of the rear surface of the body 2, and from the center of both side portions of the four-sided wall 14 A locking claw piece 15 for fixing the winding case that is integrally projected rearward is projected. The lower side of the four-way wall 14 is formed as an arcuate wall 14a that protrudes downward.

  Further, the rear opening on the upper side of the body 2 is an opening that allows a later-described arcuate wall 20 formed integrally with the upper front surface of the winding case 5 to face. The outer surface of the arc-shaped wall 20 and the outer surface of the arc-shaped wall 14a constitute a winding portion for extra length processing of the outer sheath 8b portion of the optical fiber cable 8 described later.

  On the other hand, the cover 3 constituting the outlet body with the body 2 is made of a composite resin molded body, has a rectangular front surface portion 3a, legs 3b and 3b formed to extend rearward from both sides of the rear surface of the front surface portion 3a, and the upper end of the rear surface. The shaft holding portions 17 and 17 projecting rearward on both sides of the portion constitute a storage portion for storing and holding the optical fiber receptacle 4 in the space between the rear surface side of the front surface portion 3a and the legs 3b and 3b. ing. Further, the shaft holding portions 17 and 17 are formed by penetrating shaft holes 18 that support both ends of the rotating shaft 11 on the opposing surfaces, and the bearing portion 12 on the body 2 side is interposed between the shaft holding portions 17 and 17. By inserting the rotation shaft 11 through the shaft hole 18 of one shaft holding portion 17, the bearing recess 12 a of the bearing portion 12, and the shaft hole 18 of the other shaft holding portion 17, the upper end portion of the cover 3 can be turned freely. It is designed to pivot on the body 2.

  The optical fiber receptacle 4 is used as a housing 40 made of a rectangular parallelepiped hollow member made of a synthetic resin molding, and this housing 40 has an outer peripheral surface on the side of the front (below when attached to the cover 3) on the rear (cover). The inner space is divided into right and left by a partition wall, and a light guide tube (not shown) is stored in the middle of each space portion. The front side of the space part is a plug connection part 41, and the rear side is a cable connection part 42. The plug connecting portion 41 is for inserting an optical fiber plug (not shown), and an optical fiber plug (not shown) is inserted into and connected to the plug connecting portion 41 so that the above-described light guide cylinder can be connected. The optical fiber cable 8 connected to the cable connectable portion 42 side through the guide hole and the optical fiber cable (not shown) connected to the optical fiber plug (not shown) are optically coupled. It has become. When the optical fiber plug (not shown) is not connected, the laser beam transmitted through the optical fiber cable 8 leaks to the plug connection portion 41 side. A protective door (not shown) for prevention is provided in the opening of each plug connecting portion 41. The protective door is opened by an insertion force when an optical fiber plug (not shown) is inserted from the opening, but a detailed description of the structure is omitted here.

  In order to fix the optical fiber receptacle 4 having such a configuration to the cover 3, the holding metal fitting 19 shown in FIG. 2A and the front surface (from front to rear of the housing 40 provided on the inner surface of each leg 3 b) ( The surface is opposed to the rear surface side of the cover 3) by sandwiching the housing 40 with the step portion 3 c matching the side shape. In other words, the holding metal fitting 19 contacts the leg pieces 19a, 19a arranged along the inner side surfaces of the leg portions 3b, 3b on both sides, and the rear surface of the housing 40 of the optical fiber receptacle 4 (surface opposite to the cover 3). The contact piece 19b in contact, the oblique piece 19c formed obliquely extending rearward from the lower end of the contact piece 19b, and projecting forward from both side edges of the oblique piece 19c. Protruding pieces 19d and 19d are provided. In order to fix the housing 40 of the optical fiber receptacle 4 to the cover 3 using the presser fitting 19, first, the housing 40 is inserted between the leg portions 3b and 3b, and both sides of the front surface portion of the housing 40 are aligned with the stepped portion 3c. At the same time, the front end of the housing 40 is brought into contact with the rib 3e protruding from the lower end of the rear surface of the cover 3 for positioning. Next, after this positioning, in this state, the presser fitting 19 is inserted between the leg portions 3b and 3b to bring the contact piece 19b into contact with the rear surface of the rear portion of the housing 40, and at the tip of the projecting pieces 19d and 19d The screws 22 and 22 inserted from the outside through the insertion holes 21 and 21 provided in the leg portions 3b and 3b are respectively screwed into the screw holes 23 and 23 provided in the leg pieces 19a and 19a. When the clamp 19 is fastened and fixed between the legs 3 b and 3 b, the housing 40 of the optical fiber receptacle 4 is fixed to the cover 3.

  Next, the assembly of the optical outlet 1 will be described.

  First, when assembling the cover 3 to the body 2, as shown in FIG. 2 (a), the center part is bent into a U-shape, and spring bodies 24 having twisted parts 24a and 24a formed at both ends are attached. That is, in this attachment, holes (not shown) in which the central portion of the spring body 24 is locked to the lower surface side of the bearing portion 12 of the body 2 and the twisted portions 24a and 24a at both ends are formed on the back sides of the both end portions of the bearing portion 12 are not shown. ) Are inserted into recesses (not shown) formed on the backs of both ends of the bearing portion 12 through the two ends of the bearing portion 12 and the openings of both ends of the bearing recess portion 12a and the through holes of the twisted portions 24a and 24a are communicated. is there.

  Next, the cover 3 is arranged on the front side of the body 2 so that the bearing 12 is interposed between the shaft holding portions 17 and 17 of the cover 3, and the one twisted portion 24 a is inserted from the shaft hole 18 of the one shaft holding portion 17. The rotating shaft 11 is inserted into the through hole, the bearing recess 12 a of the bearing portion 12, the through hole of the other twisted portion 24 a, and the shaft hole 18 of the other shaft holding portion 17.

  Further, the extended portions 24b and 24b extended from the twisted portions 24a and 24a of the spring body 24 are elastically contacted with the rear surface of the front surface portion 3a of the cover 3 and rotate in a direction in which the cover 3 protrudes forward from the front portion of the body 2. The urging force to be given is given.

  In this way, the cover 3 has the upper end pivoted on the body 2 in a state in which the spring body 24 is applied with a biasing force that pivots in the direction in which the lower end side projects forward from the front portion of the body 2 around the pivot shaft 11. Be supported. At this time, the tip portions of the leg portions 3b and 3b protrude rearward of the body 2 through holes (not shown) provided on both sides of the rear wall 2d of the body 2 (see FIG. 4A).

  In this way, the cover 3 is attached to the body 2 and the optical fiber receptacle 4 is attached to the cover 3 to complete the optical outlet 1 of the present embodiment. FIG. 4A shows that the cover 3 is rotated to the front side of the body 2 against the urging force of the spring body 24, and the locking protrusion 3 d at the lower end of the cover 3 is moved to the elastic portion 13 a of the pop-up operation portion 13. In this state, the cover 3 is held in a state where the front surface portion 3a is substantially flush with the front surface of the pop-up operation portion 13, The optical fiber receptacle 4 attached to the rear of the front surface portion 3a is housed in the body 2 as shown.

  In this state, when the pop-up operation portion 13 is pushed downward by using the elastic force of the elastic portion 13a, the tip of the locking protrusion 3d is detached from the locking hole 13b, whereby the cover 8 is moved to the spring body 24. The front surface of the body 2 is rotated so that the front surface 3a is inclined downward from the upper end to the lower end as shown in FIG. 4 (b). Thus, the plug connecting portion 41 of the optical fiber receptacle 4 faces outward from between the lower end portion and the front portion of the body 2. This state is a use state in which plug connection is performed.

  Thus, the spring body 24, the elastic piece 13, and the push button 14 function as a pop-up mechanism for popping up the cover 3 and the optical fiber receptacle 4.

  On the other hand, the winding case 5 used for processing the extra length portion of the optical fiber cable 8 is formed of a synthetic resin molded body and is detachably attached to the rear part of the body 2 of the outlet body. A flat case portion formed of a base 5a in the longitudinal direction and a peripheral wall 5b integrally projecting on the peripheral edge portion of the base 5a, and a position above and below a surface of the base 5a in the case portion (hereinafter referred to as a rear surface). Winding portions 50a and 50b provided at a predetermined interval, an arc-shaped wall 20 integrally formed on the back surface (hereinafter referred to as front surface) side upper portion of the base 5a, and extending downward from both sides from the center portion, and the arc-shaped wall A guide comprising an arc-shaped groove formed so as to extend rearward from the front end position of the central upper end portion of the base 20 and from the upper end of the rear surface of the base 5a to the central portion of the winding portion 50a. As shown in FIG. 3 (b), the side edge of the groove 16 is integrally connected to the tip of the peripheral wall 5b on one side, and the winding portions 50a and 50b are individually pivotally supported by the connecting position as a hinge. Lid 51a, 51b which can be covered is provided.

  Here, each of the winding portions 50a and 50b is a winding surface of the optical fiber cable 8 which is an outward arc surface of a plurality of ribs 500 that are integrally projected on the base 5a so as to be arranged at a predetermined interval on the circumference. The diameter of the arc of the rib 500 is set so that the radius of the circumference formed by extending and connecting the winding surfaces is equal to or greater than the allowable minimum curvature radius of the optical fiber cable 8. The lower end of the guide groove 16 faces the inner central part of the upper winding part 50a, and projects from the rear part of the body 2 to the base 5a located in the circumference that becomes the dead space of the lower winding part 50a. Locking holes 25 for inserting and locking the locking claw pieces 15 from the front side are provided so as to correspond to the respective locking claw pieces 15.

  Further, a claw portion 501 for winding the optical fiber cable 8 is integrally protruded outward from the tip of an appropriate rib 500. Further, the peripheral wall 5b is provided with a plurality of pull-out holes 26 for cutting out the optical fiber cable 8 by cutting out at an appropriate interval. Further, two hooking claws 27 are provided in the vicinity of the lower end of the guide groove 16 for collecting the optical fiber cables 8 introduced from the guide groove 16.

  Next, the optical fiber wiring device of the present embodiment is arranged in a mounting hole constituted by a switch box embedded in the modeling structure so as to open to the outer surface of the construction structure constituting the wall such as a wall panel or a concrete wall. The construction to be installed will be described. It is assumed that the optical outlet 1 is attached to the mounting frame 7 before construction.

  First, as shown in FIG. 5A, the optical fiber cable 8 wired in advance in the construction structure is pulled out from the mounting hole H of the switch box BOX (see FIG. 6B), and the optical fiber cable 8 The connection tool 28 provided at the tip of the optical fiber core 8a peeled off by peeling off the jacket is inserted and connected to the cable connection portion 42 at the rear end of the optical fiber receptacle 4 of the optical outlet 1. After this connection, as shown in FIG. 5B, the locking claw piece 15 of the body 2 is locked in the locking hole 25 on the winding case 5 side, and the winding case 5 is attached to the rear part of the body 2.

  After this attachment, the winding operation of the optical fiber cable 8 is started with the cover 3 popped up and protruded forward.

  In this winding work, while holding the mounting frame 7 with one hand, the core wire 8a portion of the optical fiber cable 8 is first led out from the rear opening of the body 2 with the other hand and is guided through the guide groove 16 in FIG. As shown in c), it is drawn into the winding case 5 surrounded by the peripheral wall 5b, and is further formed by the rib 500 of the winding portion 50b which is the lower side during attachment while hooking the core 8a of the optical fiber cable 8 on the hooking claw 27. Start winding along the winding surface.

  Then, as shown in FIG. 5 (d), when the winding at the winding portion 50b has made a round, it is passed in an S shape to the upper winding portion 50a side and wound so as to follow the winding surface of the rib 500 of the winding portion 50a. When the winding is completed, it is handed to the lower winding part 50b in an S-shape, and then the winding part 5b is wound. Thus, by alternately winding between the winding portions 50a and 50b, the core wire 8a of the optical fiber cable 8 is wound in the shape of a figure 8.

  Here, since the winding is performed while alternately changing the winding direction, the optical cable fiber 8 is not twisted during the winding operation, and when the optical fiber cable 8 is introduced into the winding case 5, the radius is equal to or larger than the allowable minimum curvature radius. Therefore, the signal transmission characteristics are not deteriorated. Further, since the winding claw portion 501 is formed on an appropriate rib 500, the winding operation can be performed efficiently without the core wire 8a falling off from the winding surface during the winding operation. The rib 500 including the claw portion 501 is arranged so as to be orthogonal to the surface of the base 5a when the winding case 5 is formed, and the lower mold is formed on the surface of the base 5a formed after molding. On the other hand, the shape is such that it can be pulled out in a direction (vertical direction) perpendicular to it, so that the structure of the mold used for molding can be simplified.

  Now, as shown in FIG. 5E, when the winding of the core wire 8a reaching the outer sheath 8b portion of the optical fiber cable 8 is finished, the outer sheath wire 8b of the optical fiber cable 8 is further wound around the outer core wire 8a. This is done (see FIGS. 6A and 6B), and the outer sheath 8b portion of the optical fiber cable 8 is pulled out of the peripheral wall 5b from the optimally drawn hole 26. After this drawing, the lids 51a and 51b are closed as shown in FIG. The lids 51a and 51b are held in a closed state by locking the side edge opposite to the hinge part to the locking claw 5c provided at the upper end of the corresponding peripheral wall 5b so as to be freely disengaged by snap fit. . The holes 510 and the notches 511 formed in the lids 51a and 51b are for releasing the claw portions 501 at the tips of the ribs 500.

  In the above-described procedure, the lids 51a and 51b are closed after the winding operation in the winding case 5 is completed. However, the winding corresponding to one winding part 50a or 50b is performed in the winding operation process of the core 8a. When the lid 5b or 51a corresponding to the other winding part 50b or 50a is closed, the core 8a of the optical fiber cable 8 wound around the other winding part 50b or 50a is separated. Therefore, the winding work can be easily performed.

  As described above, after the winding operation in the winding case 5 is completed and the lids 51a and 51b are closed, it is necessary to perform further extra length processing depending on the cut length of the optical fiber cable 8. In this extra length process, an optical fiber is provided along the outer surface of the arc-shaped walls 20 and 14a constituting the extra length winding portion in a groove formed between the base 5a of the winding case 5 and the body 2. This is done by winding the extra length of the outer sheath 8a portion of the cable 8. In this case, since the winding operation can be performed while being guided by the groove, the extra length processing is easy, and even if the amount of winding is somewhat large, the optical fiber cable 8 wound around the extra length winding portion is accommodated in the groove. There is almost no protrusion from around the wiring device.

  FIG. 7A is a view of the wiring device after the extra length processing is viewed from the rear, and FIG. 7B is a diagram of the wiring device after the extra length processing is viewed from the side, FIG. ) Is a cross-sectional view of the extra length winding portion showing the above extra length processing state.

  Now, the extra length processing outside the winding case 5 is completed, and the optical outlet 1 is held in the mounting hole H while holding the optical outlet 1 with one hand so that the extra length optical fiber cable 8 does not come apart as shown in FIG. As shown in FIG. 6 (e), the mounting holes 7a and 7a provided in the upper and lower frame pieces of the mounting frame 7 are aligned with the upper and lower screw holes 29 of the switch box BOX, and mounting screws (not shown) are attached to the mounting holes. The optical outlet 1 is attached to the attachment hole H together with the attachment frame 7 by being screwed into the screw hole 29 via 7a and 7a. Here, as described above, the optical fiber cable 8 wound around the extra length winding portion hardly protrudes out of the groove even if the amount of winding is large. Therefore, even if a small switch box BOX is used, the optical fiber cable 8 is stored in the mounting hole H. Installation is possible.

  When the attachment is completed, the upper and lower locking claws 6a... Projecting rearward from the periphery of the opening of the decorative cover 6 are locked in locking holes (not shown) provided in the front surface of the body 2. Attach the front surface of the optical outlet 1 to the front of the opening of the decorative cover 6. Thereafter, as shown in FIG. 6 (f), the decorative plate 30 is fitted from the front to expose the front portion of the decorative cover 6 and the optical outlet 1 from the opening 30a of the decorative plate 30, and the optical fiber wiring device of the present invention. Installation work will be completed.

  In the construction procedure described above, the optical fiber receptacle 4 is first attached to the cover 3 side, and after this attachment, the optical fiber cable 8 is connected to the optical fiber receptacle 4, but the optical fiber receptacle before being attached to the cover 3 is used. It is of course possible to connect the optical fiber cable 8 to 4 and then attach the optical fiber receptacle 4 to the cover 3.

Further, as shown in FIG. 7D, it is possible to attach to a shallow switch box BOX. In the figure, W is a wall.
(Embodiment 2)
An arcuate wall 20 on the side of the winding case 5 in which the winding portion for the extra length of the outer jacket 8 portion of the optical fiber cable 8 of the first embodiment is interposed between the body 2 and the winding case 5, In this embodiment, as shown in FIGS. 8A and 8B, ribs are formed on the semicircular circumference so as to have an upward arc portion on the surface of the lid 51a. 200a is integrally formed, and a rib 200b is integrally formed on the semicircular circumference so as to have a downward arc portion on the surface of the lid 51a, and the outer surface of the arc portion of these ribs 200a, 200b is formed outside the winding case 5 A winding portion for winding the extra length of the outer sheath 8b portion of the optical fiber cable 8 drawn out is configured.

  Thus, in this embodiment, as shown in FIGS. 8C and 8D, the extra length of the outer jacket 8b portion of the optical fiber cable 8 drawn out from the drawing hole 26 of the winding case 5 is used as the rib 200a, 200b. Since the extra length processing is performed by winding along the outer surface of the arc portion, the extra length processing is easy.

  Further, the wound optical fiber cable 8 hardly protrudes outside the outer edges of the lids 51a and 51b, and can be housed and mounted in the mounting hole H of the small switch box BOX as described above.

Embodiment 1 is shown, (a) is a rear view, (b) is a side view, and (c) is an AA sectional view of (b). Embodiment 1 is shown, (a) is an exploded perspective view, (b) is a perspective view. Embodiment 1 is shown, (a) is a perspective view, (b) is a perspective view of the state which opened the cover body. 1 shows Embodiment 1, (a) is a side sectional view showing a state in which an optical fiber cable is connected to an optical fiber receptacle with the winding case removed from the body and the cover closed, and (b) shows the winding case. It is side sectional drawing which shows the state which attached to the body and popped up the cover. FIG. 3 is a construction explanatory diagram of the first embodiment. FIG. 3 is a construction explanatory diagram of the first embodiment. The extra length processing state of the optical fiber cable of Embodiment 1 is shown, (a) is a rear view, (b) is a side view, (c) is an AA cross-sectional view of (b), and (d) is a switch box. It is a partially broken side view which shows an attachment state. 4A and 4B show a second embodiment, (a) is a rear view, (b) is a side view, (c) is a rear view after the extra length processing of the optical fiber cable, and (d) is a side view after the extra length processing of the optical fiber cable. is there.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical outlet 2 Body 3 Cover 4 Optical fiber receptacle 5 Winding case 8 Optical fiber cable 8b Jacket | cover 14a Arc-shaped wall 20 Arc-shaped wall

Claims (2)

An optical outlet provided with a receptacle for an optical fiber having an outlet body attached to a mounting hole opened in the construction structure and a plug connection port provided in the outlet body and facing the front side of the outlet body, and an allowable minimum curvature of the optical fiber cable A pair of winding portions having a circumferential winding surface having a radius of curvature equal to or greater than the radius is provided , and an optical fiber cable wired inside the construction structure and connected to the optical fiber receptacle is connected between the winding portions. and stored wrapped in shape, and a winding body to be attached to the rear side of the outlet body, a groove-like wrapping a surplus length portion of the optical fiber cable to a site between the winding body and the outlet body over Yes and the wound portion is provided for length, the winding portions of the pair of said U- With the winding body attached to the rear side of the cent body, the winding body is provided so as to be aligned in the longitudinal direction of the outlet body, and one of the pair of winding portions is an optical fiber of the outlet body. The optical fiber cable connected to the receptacle is used as the introduction side, and the other is used as a winding part for starting the winding of the optical fiber cable. An optical fiber wiring device comprising a hooking claw for hooking the introduced optical fiber cable before being wound around the winding portion . An optical outlet provided with a receptacle for an optical fiber having an outlet body attached to a mounting hole opened in the construction structure and a plug connection port provided in the outlet body and facing the front side of the outlet body, and an allowable minimum curvature of the optical fiber cable A pair of winding portions having a circumferential winding surface having a radius of curvature equal to or greater than the radius is provided , and an optical fiber cable wired inside the construction structure and connected to the optical fiber receptacle is connected between the winding portions. and stored wrapped in shape, the outlet and a winding body to be attached to the rear side of the body, it is provided with a wrapping section for extra length of winding the extra length portion of the optical fiber cable to the back of the winding body, a pair The winding part of the main body takes the winding body on the rear side of the outlet body. An optical fiber cable introduction side that is provided in the winding body so as to be aligned in the longitudinal direction of the outlet body in a bent state, and one of the pair of winding portions is connected to the optical fiber receptacle of the outlet body And the other is a winding part for starting the winding of the optical fiber cable, and the introduced optical fiber cable is disposed between the introduction part of the optical fiber cable and the winding part for starting the winding in the winding part on the introduction side. An optical fiber wiring device is provided with a hooking claw for hooking a wire before starting to wind around the winding portion .

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