JP2011059729A - Embedded type optical repeater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an embedded type optical repeater that facilitates the indoors adjustment of a drawing length of an optical cable from a wall face. <P>SOLUTION: The repeater is equipped with: a housing 40 which can house at least a part of an optical cable installed at the non-exposed side of an installation face or a part of the optical fiber drawn from the optical cable; a terminating panel 60 which is installed in the housing 40 from the exposed side of the installation face; and a front cover 50 which is freely detachably mounted to the housing 40 from the exposed side of the installation face. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an embedded optical repeater for accommodating an optical fiber laid on the receiving end side of an optical transmission system and an optical connector connected to the optical fiber so that the optical fiber can be pulled out on a wall surface in a house.

  In response to the rapid increase in the amount of information distribution due to the expansion of the Internet in recent years, FTTH (Fiber To The Home), which is a data communication service for homes using optical fibers, is rapidly spreading to ordinary homes. In this FTTH, an optical cable including an optical fiber is drawn into an indoor such as a general house via an outdoor optical receiver and connected to an indoor optical receiver (ONU: Optical Network Unit) installed indoors. Is done. Then, the communication data relayed through the indoor optical receiver is transmitted to each device such as a personal computer or a TV in the home (for example, see Patent Document 1).

  As an optical fiber connection structure for such an indoor optical receiver, conventionally, an optical cable is provided on the back side of the wall surface, and the optical cable is drawn into the front side of the wall surface through an opening formed in the wall surface. The optical fiber was pulled out, an optical connector was connected to the tip of the optical fiber, and the optical connector was inserted into the connector of the indoor optical receiver.

JP 2005-025094 A

  However, in such a conventional optical fiber connection structure for an indoor optical receiver, the length of the optical cable drawn to the front side of the wall surface changes according to the distance from the wall surface to the indoor optical receiver, and is close to the wall surface If an indoor optical receiver is installed at the location, the longer optical cable will be in the way, or conversely, if an indoor optical receiver is installed at a location far from the wall, it will be shorter. In some cases, the optical cable pulled out from the wall did not reach the indoor optical receiver, and the length of the optical cable pulled out from the wall surface could not be adjusted at home.

  The present invention has been made in view of the above, and an object of the present invention is to provide an embedded optical repeater that can easily adjust the length of the optical cable drawn from the wall surface in the home.

  In order to solve the above-described problems and achieve the object, the present invention according to claim 1 accommodates at least a part of an optical cable laid on a non-exposed side of an installation surface or an optical fiber drawn from the optical cable. A possible housing, termination means attached to the inside of the housing from the exposed side of the installation surface, and a front cover detachably attached to the housing from the exposed side of the installation surface.

  According to a second aspect of the present invention, in the first aspect of the present invention, the termination means is detachably provided inside the casing.

  According to a third aspect of the present invention, in the present invention according to the first or second aspect, the surplus length processing section for winding the surplus length portion of the optical fiber around the front cover or the termination means. Was established.

  According to a fourth aspect of the present invention, in the present invention according to any one of the first to third aspects, an optical cable fixing means for fixing the optical cable is provided.

According to the third aspect of the present invention, since the surplus length processing section is provided, the surplus length processing of the optical fiber can be easily performed.
In addition, when the termination means is provided detachably in the housing and the termination means is provided with a surplus length processing section, the termination means is removed from the exposed side of the installation surface to process the extra length of the optical fiber. By doing so, the extra length processing of the optical fiber can be easily performed.

  According to the fourth aspect of the present invention, the optical cable can be fixed by the optical cable fixing means, and the optical cable can be pulled in easily and reliably.

It is a figure which shows the optical repeater concerning Embodiment 1 of this invention, Comprising: (a) is a front view, (b) is a top view, (c) is a bottom view. It is a side view of the optical repeater of FIG. It is AA arrow sectional drawing of FIG.1 (b). It is BB arrow sectional drawing of Fig.1 (a). It is a disassembled perspective view of an optical repeater. It is a figure which shows a housing | casing, (a) is a front view, (b) is a side view, (c) is a rear view, (d) is a bottom view. It is an enlarged view of the optical cable fixing | fixed part in the state which fixed the optical cable. It is a figure which shows a front cover, (a) is a front view, (b) is a bottom view, (c) is a side view, (d) is a rear view, (e) is a CC arrow section of (a). (F) is a DD arrow sectional drawing of (a). It is a figure which shows the optical repeater after attachment, (a) is a front view, (b) is a side view. It is a figure which shows the optical repeater concerning Embodiment 2 of this invention, Comprising: (a) is a front view, (b) is a top view, (c) is a bottom view. It is a side view of the optical repeater of FIG. It is EE arrow sectional drawing of (b) of FIG. It is a front view of an optical repeater in the state where a front cover was removed. It is FF arrow sectional drawing of Fig.10 (a) in the state which removed the front cover. It is GG arrow sectional drawing of Fig.10 (a) in the state which removed the front cover. It is a disassembled perspective view of an optical repeater. It is a figure which shows a housing | casing, (a) is a front view, (b) is a side view, (c) is a rear view, (d) is a bottom view. It is a figure which shows a front cover, (a) is a front view, (b) is a bottom view, (c) is a side view, (d) is a rear view. It is a figure which shows the termination | terminus panel in the state before fixing, such as an optical fiber, (a) is a right view, (b) is a bottom view, (c) is a front view, (d) is a left view. It is a figure which shows the termination | terminus panel in the state after fixing optical fibers etc., (a) is a right view, (b) is a bottom view, (c) is a front view, (d) is a left view.

  Embodiments of an embedded optical repeater (hereinafter simply referred to as an optical repeater) according to the present invention will be described below in detail with reference to the accompanying drawings. First, [I] the basic concept common to each embodiment was explained, then [II] the specific contents of each embodiment were explained, and [III] finally, a modification to each embodiment was explained. To do. However, the present invention is not limited by these embodiments.

[I] Basic concept common to the embodiments First, the basic concept common to the embodiments will be described. Each embodiment relates to an optical repeater that enables an optical cable drawn from outside to be drawn out into the house.

  One of the features of this optical repeater is that it is configured as an embedded optical repeater having a fixing means for embedding and fixing at least a part of the casing constituting the optical repeater on a wall surface (mainly an indoor wall surface). There is in being. That is, by adopting an embedded fixed structure for the optical repeater, the portion of the optical repeater exposed to the indoor space can be significantly reduced, and the optical repeater does not interfere with the user, and the optical repeater The device is not subject to mischief such as children, and furthermore, the indoor aesthetics are not impaired by the optical repeater. Thus, the optical repeater having the embedded structure itself is a novel thing that cannot be seen in the prior art, but in each embodiment, various new features that may occur when such an embedded structure is adopted are also included. By eliminating various problems, the convenience and reliability of optical repeaters are improved.

  Furthermore, one of the other characteristics of this optical repeater is that an optical fiber drawn out from an optical cable, an extra length portion of another optical fiber connected to the optical fiber, and the like can be wound inside the housing. In the point. Therefore, when an optical fiber is prepared longer and an indoor optical receiver is installed at a position close to the wall surface, it can be prevented from getting in the way by winding up the extra length of the optical fiber, When the indoor optical receiver is installed at a position far from the wall surface, it is possible to reliably connect to the indoor optical receiver by using a long optical fiber drawn out from the housing. In this way, winding the extra length portion of the optical fiber inside the optical repeater itself is a novel thing that cannot be seen in the prior art, but in each embodiment, the specific configuration of the extra length portion is further added. By adding various ideas, the convenience and reliability of the optical repeater are improved.

[II] Specific Contents of Each Embodiment The specific contents of each embodiment will be sequentially described in detail below with reference to the accompanying drawings.

[Embodiment 1]
First, specific contents of the first embodiment according to the present invention will be described in detail. In the first embodiment, a surplus length processing unit is provided on the front cover of the optical repeater. In the first embodiment, it is assumed that an optical cable is laid from the outdoor side to the back side of the wall surface, an optical fiber is drawn from the optical cable, and an optical connector is connected to the tip of the optical fiber.

(Configuration of optical repeater)
First, the configuration of the optical repeater 1 will be described. 1A and 1B are diagrams showing an optical repeater 1 according to the first embodiment, where FIG. 1A is a front view, FIG. 1B is a plan view, FIG. 1C is a bottom view, and FIG. 3 is a sectional view taken along the line AA in FIG. 1B, FIG. 4 is a sectional view taken along the line BB in FIG. 1A, and FIG. 5 is an exploded perspective view of the optical repeater. Yes (in these FIGS. 1-5, the optical repeater is shown with the fixture and part of the wall). In the following description, the X direction in FIGS. 1A and 1B is the left-right direction (width direction), the Y direction is the front-rear direction (thickness direction, front-back direction), and the Z direction is the up-down direction (height direction). ). Further, as shown in FIG. 1B, with the wall surface W as a boundary, the near side is the indoor side and the far side is the wall back side. As shown in these drawings, the optical repeater 1 includes a housing 10 and a front cover 20 and is attached to a wall surface W using an attachment tool 30 described later.

  First, the housing 10 will be described. 6A and 6B are views showing the housing 10, in which FIG. 6A is a front view, FIG. 6B is a side view, FIG. 6C is a rear view, and FIG. The housing 10 includes a housing body 11 and a decorative plate 12 that is integrally provided on the front surface of the housing body 11.

  The housing main body 11 is formed in a hollow box shape with the front surface open, and an extra length storage portion 22 to be described later can be stored in the internal space of the housing main body 11. As shown in FIGS. 5 and 6, the upper and lower surfaces of the housing body 11 are formed with slits 13 through which screwing pieces 32 b of the storage box cover 32 described later are inserted.

  As shown in FIGS. 3 and 4, an optical cable fixing portion 14 is integrally provided on the back surface of the housing body 11. The optical cable fixing portion 14 is for fixing the optical cable OC laid on the back of the wall from the outdoor side to the housing 10 and for drawing out the optical fiber OF from the optical cable OC. Correspond. FIG. 7 shows an enlarged view of the optical cable fixing portion 14 in a state where the optical cable OC is fixed. As shown in FIG. 7, the cable fixing portion 14 includes a cable holding portion 14a, a clamping portion 14b, and a covered wire holding portion 14c. Then, after the optical cable OC is held by the cable holding portion 14a, the covered wire OCa is branched together with a reinforcing material (not shown), so that the optical fiber OF surrounded by the covered wire OCa is exposed. Here, the covered wire OCa is bent with the cable holding portion 14a as a fulcrum, and is further sandwiched between the cable holding portion 14a and the holding portion 14b, and further protrudes in the bending direction to reach the covered wire holding portion 14c. In this state, the covered wire OCa is held by the covered wire holding portion 14c by its own restoring force. The optical cable OC drawn out in this way is drawn into the housing 10 through the insertion hole 15 shown in FIG.

  In FIG. 6, the decorative plate 12 functions as an embedding fixing means for embedding and fixing the housing to the wall surface W as will be described later, and covers the periphery of the accommodating box cover 32 described later. The cover 32 is not exposed to the indoor side. The decorative plate 12 is configured as a flat plate-like member that extends vertically and horizontally from the front edge of the housing body 11. Screw fixing pieces 16 are provided at substantially the center positions on the upper and lower sides of the decorative plate 12, and screw holes 16 a are formed in the screw fixing pieces 16.

  Next, the front cover 20 will be described. 8A and 8B are views showing the front cover 20, wherein FIG. 8A is a front view, FIG. 8B is a bottom view, FIG. 8C is a side view, FIG. 8D is a rear view, and FIG. C arrow sectional drawing, (f) is DD arrow sectional drawing of (a). The front cover 20 is configured by integrally providing a surplus length processing section 22, a connector fixing section 23, and a drawer section 24 on a panel body 21.

  The panel body 21 is detachably attached to the front surface of the housing 10 and covers the inside of the housing 10 in a non-exposed manner with respect to the house. The panel body 21 has a height and width slightly larger than the internal space of the housing 10. It has a thin plate shape. Locking pieces 21a extending toward the housing 10 are provided on the left and right side portions of the panel body 21, and the locking pieces 21a are detachably locked to the left and right side portions of the housing 10 from the inside. By doing so, the front cover 20 can be detachably attached to the housing 10.

  The surplus length processing unit 22 accommodates the surplus length portion of the optical fiber OF so that it can be pulled out, and corresponds to the surplus length processing means in the claims. Specifically, the surplus length processing unit 22 is raised from the front cover 20 toward the housing 10, and as shown in FIG. It has 1 wall part 22a and 2nd wall part 22b. The first wall portion 22a and the second wall portion 22b are formed concentrically with each other, and are arranged so as to be slightly separated from each other. The first wall portion 22a and the second wall portion 22b This extra length can be accommodated by winding the extra length of the optical fiber OF an arbitrary number of times between the wall portion 22b. Moreover, the stopper 22c extended toward the 1st wall part 22a is formed in the front-end | tip of the 2nd wall part 22b, The surplus length part accommodated in the surplus length process part 22 by this stopper 22c Is prevented from dropping from the surplus length processing section 22.

  The connector fixing portion 23 is for temporarily fixing the optical connector CT in a detachable manner, and corresponds to the connector fixing means in the claims. Here, the specific structure of the optical connector CT is arbitrary. For example, the optical connector CT is configured as an F04 type single-core optical fiber connector (SC type connector) standardized by JIS5973. It is configured. The connector fixing portion 23 has a shape that is slightly larger than the frame of the optical connector CT, and is configured as a rectangular frame having a height and a width that can be brought into close contact with the outer surface of the frame. As shown, the optical connector CT can be temporarily fixed to the front cover 20 detachably by inserting the optical connector CT into the connector fixing portion 23.

  In FIG. 8, a drawing portion 24 is for drawing the optical fiber OF from the inside of the housing 10 to a desired external position, and corresponds to a drawing opening in the claims. Specifically, the drawer portion 24 includes a drawer slit 24a and a movement slit 24b. The drawing slit 24a is an opening for drawing the optical fiber OF from the inside of the housing 10 to the outside, and is formed as a slit having a width that allows at least insertion of the optical fiber OF. The drawer slit 24a is formed so as to extend from the end portion (here, the lower end portion) of the panel body 21 to the moving slit 24b. Therefore, even when the front cover 20 is fixed to the housing 10, It becomes possible to draw the optical fiber OF to the outside through the drawing slit 24a.

  The moving slit 24b is an opening for moving the optical fiber OF drawn out of the housing 10 to a desired position. Specifically, the moving slit 24b is formed as a slit having a width that allows at least insertion of the optical fiber OF. ing. The movement slit 24b is formed to communicate with at least the extraction slit 24a, and the optical fiber OF drawn through the extraction slit 24a can be inserted into the movement slit 24b. Further, the moving slit 24b is formed so as to face the direction in which the optical fiber OF is desired to be moved. Here, the front surface shown in FIG. 8A is shown so that the optical fiber OF can be moved in the left-right direction. The shape is substantially U-shaped.

(Mounting structure of optical repeater 1)
Next, a structure for attaching the thus configured optical repeater 1 to the wall surface W will be described. As shown in FIG. 5, as the attachment device 30 for attaching the optical repeater 1 to the wall surface W, here, an accommodation box 31 and an accommodation box cover 32 are used. Schematically, a storage box 31 and a storage box cover 32 are fixed to the back side of the wall. The housing 10 of the optical repeater 1 is stored in the storage box 31 and the front cover 20 is exposed indoors.

  The storage box 31 is formed in a hollow rectangular shape with an open front, and has a storage space portion in which the housing 10 can be received. A wiring pipe (not shown) is connected to the opening 31a on the upper surface of the housing box 31, and the optical cable OC can be drawn into the housing box 31 through the wiring pipe. The upper and lower side pieces of the storage box 31 are provided with screwing pieces 31b, and the screwing pieces 31b are formed with screw holes 31c.

  The storage box cover 32 is a rectangular frame-shaped member that abuts against the non-exposed surface of the wall surface W, and the housing 10 can be taken in and out of the storage box 31 through the central opening. The upper and lower side pieces of the storage box cover 32 are provided with screw holes 32a, and the mounting box 33 inserted into the screw hole 32a is screwed into the screw hole 31c of the storage box 31, whereby the storage box cover 32 is provided. Can be screwed to the storage box 31. Further, screwing pieces 32b are provided above and below the opening of the storage box cover 32, and screw holes 32c are formed in each screwing piece 32b.

(Drawing method of optical fiber OF)
In such a configuration, the optical fiber OF is drawn as follows. First, the storage box 31 and the storage box cover 32 are mutually connected. This fixing can be performed by screwing the attachment screw 33 inserted into the screw hole 32 a of the storage box cover 32 into the screw hole 31 c of the storage box 31. The storage box 31 and the storage box cover 32 fixed in this way are arranged inside the wall surface W, a wiring pipe (not shown) is connected to the opening 31a of the storage box 31, and the storage box 31 is connected via the wiring pipe. The optical cable OC is drawn into the interior of the. The optical cable OC is temporarily pulled out indoors through the opening of the storage box cover 32 and the opening of the wall surface W, and the optical cable OC is fixed to the optical cable fixing portion 14 on the back surface of the housing 10. The optical fiber OF drawn from the OC is drawn into the housing 10 through the insertion hole 15. Then, the optical connector CT is connected to the tip of the optical fiber OF by a known method.

  Next, the housing 10 is fixed to the storage box cover 32. Specifically, the housing 10 is inserted into the storage box 31 through the opening of the wall surface W and the opening of the storage box cover 32. This insertion can be performed while the screwing pieces 32b of the storage box cover 32 are inserted through the upper and lower slits 13 of the housing 10, so that the screwing pieces 32b do not hinder the insertion of the housing 10. And in the state which inserted the housing | casing 10 in the storage box 31 completely, since the screwing piece 16 of the housing | casing 10 and the screwing piece 32b of the storage box cover 32 are arrange | positioned in a mutually overlapping position, The mounting screw 34 inserted into the screw hole 16 a of the stopper piece 16 can be screwed into the screw hole 32 c of the screw stopper piece 32 b of the storage box cover 32, and the housing 10 can be fixed to the storage box cover 32 with screws. Moreover, by fixing in this way, the wall surface W is clamped between the decorative plate 12 of the housing | casing 10 and the storage box cover 32, and the optical repeater 1 can be fixed to the wall surface W. Thereafter, by pressing the front cover 20 against the housing 10, the locking piece 21 a of the front cover 20 is locked inside the housing 10, so that the front cover 20 can be fixed to the housing 10. This completes the installation work.

  Here, when the optical connector CT is unnecessary, the front cover 20 is removed before the front cover 20 is attached to the housing 10 (or even after the front cover 20 is once attached to the housing 10). ), The extra length portion of the optical fiber OF (in this case, the substantially full length portion of the optical fiber OF) is wound around the extra length processing section 22, the optical connector CT is fixed to the connector fixing section 23, and the front cover 20 is mounted on the housing Attach to 10. In this state, since the optical fiber OF and the optical connector CT are completely accommodated in the optical repeater 1 and are not exposed to the indoor side, the optical fiber OF or the optical connector CT becomes an obstacle, or the optical fiber OF or optical fiber It is possible to prevent the appearance of the room from being damaged by the connector.

  Further, when the optical connector CT is necessary, before the front cover 20 is attached to the housing 10 (or even after the front cover 20 is temporarily attached to the housing 10, the front cover 20 is removed). Then, after the optical fiber OF is unwound from the extra length processing unit 22 by a required length, and the optical fiber OF is pulled out to the front side through the drawing slit 24a of the front cover 20, the front cover 20 is mounted on the housing. Attach to body 10. FIGS. 9A and 9B are diagrams showing the optical repeater 1 after installation, in which FIG. 9A is a front view and FIG. 9B is a side view. In this state, since the optical fiber OF and the optical connector CT are exposed to the indoor side through the drawing slit 24a, the optical connector CT can be used by being connected to any optical receiver (not shown). Particularly, since the extra length portion of the optical fiber OF is wound around the extra length processing unit 22 (not shown in FIG. 9), only the necessary portion of the optical fiber OF is exposed on the indoor side, and the optical fiber OF is too long. It is possible to prevent the aesthetics of the room from being disturbed by the optical fiber OF.

  Further, when the drawing direction of the optical fiber OF is changed, the optical fiber OF can be moved from the drawing slit 24a to the moving slit 24b and drawn out in any left and right directions through the moving slit 24b. . Further, even when the required distance of the optical fiber OF changes after the optical repeater 1 is attached in this way, the front cover 20 is once removed from the housing 10 and the optical fiber OF is wound up in the extra length processing unit 22. By reattaching the front cover 20 to the housing 10 after increasing or decreasing the amount, it is possible to always optimize the drawing amount of the optical fiber OF.

(Effect of Embodiment 1)
As described above, according to the first embodiment, the optical repeater 1 can be embedded and fixed to the wall surface W, and the optical fiber OF and the optical connector CT can be accommodated on the back side of the wall when not needed. It is possible to prevent a person from getting in the way, being a subject of mischief such as a child, or impairing the aesthetics of the room. In particular, since unnecessary portions of the optical fiber OF can be wound around and accommodated in the extra length processing unit 22, the optical fiber OF can be safely accommodated without being damaged. Further, the drawing direction of the optical fiber OF can be arbitrarily changed through the moving slit 24b.

[Embodiment 2]
Next, the specific content of Embodiment 2 which concerns on this invention is demonstrated in detail. In the second embodiment, the surplus length processing section is provided not on the front cover but on the termination panel that is detachably accommodated inside the housing. However, unless otherwise specified, the configuration is the same as that of the first embodiment, and the same components and elements as those of the first embodiment are given the same names and reference numerals as those used in the first embodiment as necessary. Is attached. In the second embodiment, the optical cable OC is laid from the outdoor side to the back side of the wall surface W, the optical fiber OF is drawn from the optical cable OC, and the optical fiber OF is mechanically spliced MS ( It is assumed that the optical connector CT is connected to the tip of the other optical fiber OF.

(Configuration of optical repeater 2)
First, the configuration of the optical repeater 2 will be described. 10A and 10B are diagrams showing the optical repeater 2 according to the second embodiment, where FIG. 10A is a front view, FIG. 10B is a plan view, FIG. 10C is a bottom view, and FIG. FIG. 12 is a cross-sectional view taken along the line EE of FIG. 10B, FIG. 3 is a front view of the optical repeater 2 with the front cover removed, and FIG. 14 is the front cover removed. 10A is a cross-sectional view taken along arrow FF in FIG. 10A in a state, FIG. 15 is a cross-sectional view taken along arrow GG in FIG. 10A with the front cover removed, and FIG. It is a figure (in these FIGS. 10-16, the optical repeater 2 is shown with a fixture and a part of wall surface). As shown in each of these drawings, the optical repeater 2 includes a housing 40, a front cover 50, and a termination panel 60, and is attached to the wall surface W using the same attachment device 30 as in the first embodiment. It is done.

  First, the housing 40 will be described. 17A and 17B are views showing the housing 40, where FIG. 17A is a front view, FIG. 17B is a side view, FIG. 17C is a rear view, and FIG. The housing 40 includes a housing main body 41, a decorative plate 42 provided integrally with the front surface of the housing main body 41, and a termination panel fixing portion 43 provided inside the housing main body 41. ing. The termination panel fixing portion 43 is termination panel fixing means for detachably attaching the termination panel 60 to the inside of the housing body 41. Specifically, the termination panel fixing portion 43 includes a support piece 43a extending from the bottom of the housing 40 to the front surface side, sandwiching pieces 43b provided at both ends in the longitudinal direction of the support piece 43a, and a support piece 43a. And a locking piece 43c provided near the approximate center in the longitudinal direction.

  The support piece 43 a is a protruding piece having a length substantially the same as that of the termination panel 60, substantially abuts on the side of the termination panel 60, and supports the termination panel 60. In particular, as shown in FIG. 17A, since the support pieces 43a are formed obliquely toward the opposite corners of the housing 40, the termination panel 60 is formed obliquely inside the housing 40. Even if the entire length of the termination panel 60 is longer than the height of the housing 40, the termination panel 60 can be supported inside the housing 40. The sandwiching piece 43b extends in a substantially L shape from the support piece 43a, and sandwiches the end portion of the termination panel 60 between the sandwiching piece 43b and the support piece 43a. The locking piece 43 c is a fixing means for fixing the termination panel 60 by being detachably locked to the termination panel 60. As shown in FIGS. 17A, 17 </ b> B, and 17 </ b> D, the locking piece 43 c is a substantially L-shaped member that extends forward from the support piece 43 a and protrudes toward the termination panel 60. A projection 43d is provided, and the projection 43d is detachably locked to the termination panel 60, whereby the termination panel 60 is fixed to the housing 40. The locking piece 43c is elastically deformed by pressing the upper portion of the locking piece 43c to the opposite side of the termination panel 60 with a finger or the like. By this deformation, the locking of the projection 43d with respect to the termination panel 60 is released, The termination panel 60 becomes removable.

  Next, the front cover 50 will be described. 18A and 18B are diagrams showing the front cover 50, where FIG. 18A is a front view, FIG. 18B is a bottom view, FIG. 18C is a side view, and FIG. The front cover 50 is basically configured in the same manner as the front cover 20 of the first embodiment, but the excess length processing section and the connector fixing section as in the first embodiment are omitted. That is, in the second embodiment, the surplus length processing function and the temporary fixing function of the optical connector CT are provided not on the front cover 50 but on the termination panel 60, and the configuration of the front cover 50 is simplified.

  Next, the termination panel 60 will be described. 19A and 19B are diagrams showing the termination panel 60 in a state before fixing an optical fiber or the like, where FIG. 19A is a right side view, FIG. 19B is a bottom view, FIG. 19C is a front view, and FIG. FIGS. 20A and 20B are views showing the termination panel 60 in a state after fixing an optical fiber or the like, where FIG. 20A is a right side view, FIG. 20B is a bottom view, FIG. 20C is a front view, and FIG. It is a left side view. The termination panel 60 corresponds to the termination means in the claims, and is configured by integrally including a panel body 61, a surplus length processing portion 62, a connection fixing portion 63, and a connector fixing portion 64. .

  The panel body 61 is a flat plate that forms the basic structure of the termination panel 60. As shown in FIG. 19 (a), a pair of slits 61a are provided on one side of the panel body 61, and the sandwiching piece 43b of the termination panel fixing portion 43 is inserted into the slit 61a. Thus, the termination panel 60 can be attached to the termination panel fixing portion 43.

  The surplus length processing unit 62 accommodates the surplus length portion of the optical fiber OF so that it can be pulled out, and corresponds to surplus length processing means in the claims. Specifically, the surplus length processing portion 62 is raised from one side surface of the termination panel 60, and has a first wall portion 62a and a second wall portion 62b whose side surface shape is substantially circular. It is configured with. Then, by winding the extra length portion of the optical fiber OF around the first wall portion 62a and the second wall portion 62b an arbitrary number of times, the extra length portion can be accommodated. Further, the first wall portion 62a and the second wall portion 62b are formed with stoppers 62c extending outward from the upper ends of the first wall portions 62a and the second wall portions 62b. The extra length portion is prevented from falling off from the extra length processing section 62.

  The connection fixing part 63 is for fixing the mechanical splice MS for connecting the optical fibers OF to each other, and corresponds to the connection part fixing means in the claims. The connection fixing portion 63 is provided on the same surface as the side on which the surplus length processing portion 62 is formed, on both side surfaces of the termination panel 60, and a support piece 63 a protruding from the panel body 61, The locking piece 63b protrudes toward the support piece 63a. The mechanical splice MS is pushed between the support piece 63a and the locking piece 63b while elastically deforming the locking piece 63b, so that the mechanical splice MS is supported by the elastic force of the locking piece 63b. The mechanical splice MS is detachably fixed to the termination panel 60 by being pressed toward 63a.

  The connector fixing part 64 is for temporarily fixing the optical connector CT in a detachable manner, and corresponds to the connector fixing means in the claims. The connector fixing portion 64 is provided on the opposite side surface of the termination panel 60 to the side on which the extra length processing portion 62 and the connection fixing portion 63 are formed, and holds the frame of the optical connector CT. And a pair of clamping pieces 64a. The optical connector CT can be temporarily fixed to the termination panel 60 by pushing the optical connector CT between the sandwiching pieces 64a.

(Drawing method of optical fiber OF)
In such a configuration, the optical fiber OF is drawn as follows. First, in the same manner as in the first embodiment, the storage box 31 and the storage box cover 32 are arranged inside the wall surface W while being fixed to each other, the optical cable OC is drawn into the storage box 31, and the optical cable OC is pulled out. The optical fiber OF is pulled into the housing 10. Then, another optical fiber OF is connected to the tip of the optical fiber OF by a known method using a mechanical splice MS, and the optical connector CT is connected to the tip of the optical fiber OF.

  Next, as in the first embodiment, by fixing the housing 40 to the storage box cover 32, the wall surface W is sandwiched between the decorative plate 42 of the housing 40 and the storage box cover 32, and the optical repeater 2. Can be fixed to the wall surface W. Thereafter, the termination panel 60 is obliquely inserted into the housing 40 and fixed to the termination panel fixing portion 43 of the housing 40. Specifically, the projection 43 d of the locking piece 43 c is locked to the termination panel 60 by pushing the termination panel 60 into the termination panel fixing portion 43. Thereafter, by pressing the front cover 50 against the housing 40, the locking piece 21 a of the front cover 50 is locked inside the housing 40, so that the front cover 50 can be fixed to the housing 40. This completes the installation work.

  Here, when the optical connector CT is unnecessary, the front cover 50 is removed before the front cover 50 is attached to the housing 40 (or even after the front cover 50 is once attached to the housing 40). ) In the state where the termination panel 60 is removed from the termination panel fixing portion 43, the surplus length portion of the optical fiber OF (in this case, the substantially full length portion of the optical fiber OF) is wound around the surplus length processing portion 62 and mechanical. The splice MS is fixed to the connection fixing portion 63, and the optical connector CT is fixed to the connector fixing portion 64. And after fixing the termination panel 60 which fixed each part in this way to the termination panel fixing | fixed part 43, the front cover 50 is attached to the housing | casing 40. FIG. In this state, since the optical fiber OF, the mechanical splice MS, and the optical connector CT are completely accommodated in the optical repeater 2 and are not exposed to the indoor side, the optical fiber OF, the optical connector CT, and the like are obstructive. It is possible to prevent the appearance of the room from being damaged by the optical fiber OF, the optical connector CT, or the like.

  Further, when the optical connector CT is necessary, before the front cover 50 is attached to the housing 40 (or even after the front cover 50 is once attached to the housing 40, the front cover 50 is removed). Then, the termination panel 60 is removed from the termination panel fixing portion 43, and the optical fiber OF is unwound from the extra length processing portion 62 by a required length, and this optical fiber OF is front-faced through the drawing slit 24a of the front cover 20. Pull out. And after fixing the termination panel 60 to the termination panel fixing | fixed part 43 again, the front cover 50 is attached to the housing | casing 40. FIG. In this state, since the optical fiber OF and the optical connector CT are exposed to the indoor side through the drawing slit 24a, the optical connector CT can be used by being connected to an arbitrary optical receiver. In particular, since the surplus length portion of the optical fiber OF is wound around the surplus length processing unit 62, only the necessary portion of the optical fiber OF is exposed indoors, and the optical fiber OF is too long to obstruct the optical fiber. The OF can prevent the indoor aesthetics from being damaged. Further, when the drawing direction of the optical fiber OF is changed, the optical fiber OF can be drawn in any direction on the left and right via the movement slit 24b. Further, even when the required distance of the optical fiber OF changes after the optical repeater is attached in this way, the front cover 50 is once removed from the housing 40 and the termination panel 60 is detached from the termination panel fixing portion 43. Then, after increasing or decreasing the winding amount of the optical fiber OF in the extra length processing unit 62, the termination panel 60 is attached to the termination panel fixing unit 43, and the front cover 50 is attached to the housing 40 again to The drawing amount of the fiber OF can be always optimized.

(Effect of Embodiment 2)
As described above, according to the second embodiment, the optical repeater 2 can be embedded and fixed to the wall surface W, and the optical fiber OF, the mechanical splice MS, or the optical connector CT can be accommodated on the back side of the wall when not needed. It is possible to prevent the optical connector CT and the like from being in the way of the user, being a mischief object for a child or the like, or impairing the indoor aesthetics. In particular, since unnecessary portions of the optical fiber OF can be wound and accommodated in the surplus length processing portion, the optical fiber OF can be safely accommodated without being damaged. Further, the drawing direction of the optical fiber OF can be arbitrarily changed through the moving slit 24b.

[Modifications to Embodiment]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention may be arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. Can do. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above-described contents, and the present invention solves the problems not described above or has the effects not described above. There are also cases where only some of the described problems are solved or only some of the described effects are achieved.

(Relationship between each embodiment)
The configurations shown in the respective embodiments can be applied to other embodiments. For example, the connector fixing portion 23 may be provided on the front cover 20 as in the first embodiment, and the surplus length processing portion 62 may be provided on the termination panel 60 as in the second embodiment. Or you may provide the connection fixing | fixed part 63 of Embodiment 2 in the back surface of the front cover 20 of Embodiment 1. FIG.

(About the connection form of optical cables and optical fibers and the aspect of the fixed structure associated with this form)
The connection form of the optical cable OC and the optical fiber OF shown in each embodiment can be arbitrarily changed, and the configuration of the optical repeaters 1 and 2 can be changed with the change of the connection form. For example, in the second embodiment, a form in which only one mechanical splice MS is used is shown, but a larger number of optical fibers OF may be connected by a larger number of mechanical splices MS. In this case, The number of connection fixing portions 63 of the termination panel 60 may be increased. In addition, a WDM (Wavelength Division Multiplexing) filter may be connected to the optical fiber OF as signal separation means for separating a signal transmitted through the optical fiber OF into a video signal and a communication signal. In this case, the termination panel 60 may be provided with separation unit fixing means for fixing the WDM filter with the same configuration as the connection fixing unit 63.

(Fixing structure for wall surface W)
The fixing structure of the optical repeaters 1 and 2 to the wall surface W can take other forms. For example, the housings 10 and 40 of the optical repeaters 1 and 2 are directly fixed to the wall surface W with screws. Alternatively, a known fixing structure used in a commercial power outlet or a TV signal distribution series unit may be applied.

(Appendix)
The present invention described in appendix 1 can accommodate at least a part of an optical cable laid on the non-exposed side of the installation surface or an optical fiber drawn from the optical cable, and is directly connected to the optical fiber. Or a housing that allows the indirectly connected optical connector to be pulled out to the exposed side of the installation surface, and an embedding fixing means for embedding and fixing at least a part of the housing to the installation surface. It is characterized by.

  The present invention described in appendix 2 is characterized in that, in the present invention described in appendix 1, a surplus length processing section for winding the surplus length portion of the optical fiber is provided inside the casing. And

  Further, the present invention described in Appendix 3 is the present invention described in Appendix 2, further comprising a front cover that is detachably attached to the casing from an exposed side of the installation surface, and the casing of the front cover is provided. The surplus length processing section is provided on the body side surface.

  Further, the present invention described in appendix 4 is the present invention described in appendix 2, wherein termination means that is detachably attached to the inside of the housing from the exposed side of the installation surface is provided. Features.

  Further, the present invention described in appendix 5 is the present invention described in appendix 4, wherein the casing is formed in a substantially rectangular box shape, and the termination means is arranged along the diagonal line of the casing. It is characterized by being detachable from the body.

  Further, the present invention described in appendix 6 is the present invention described in any one of appendices 1 to 5, wherein a connection portion fixing means for fixing a connection means between the optical fiber and another optical fiber is provided. It is characterized by being provided so as to be housed inside the housing.

  Further, according to the present invention described in appendix 7, in the present invention according to any one of appendices 1 to 6, a signal separation means for separating a signal in a predetermined band from a signal transmitted through the optical fiber is fixed. Separating section fixing means is provided inside the housing so as to be freely housed.

  Further, in the present invention described in appendix 8, in the present invention described in any one of appendices 1 to 7, the housing includes an optical connector fixing means for detachably fixing an optical connector. It is characterized in that it can be accommodated inside the housing.

  The present invention described in appendix 9 is characterized in that in the present invention described in any one of appendices 1 to 8, an optical cable fixing means for fixing the optical cable is provided.

  Further, according to the present invention described in Appendix 10, in the present invention described in any one of Appendixes 1 to 9, a front cover that is detachably attached to the housing from the exposed side of the installation surface is provided. The front cover is provided with a drawer opening for pulling out the optical connector from the front cover.

  According to the present invention described in appendix 1, the optical connector can be pulled out of the housing embedded and fixed on the installation surface, and the optical fiber and the optical connector can be accommodated on the back side of the wall when not needed. It is possible to prevent the user from getting in the way, being a target of mischief such as a child, or impairing the aesthetics of the room.

  Further, according to the present invention described in appendix 2, since the extra length portion of the optical fiber can be wound around the extra length processing portion inside the housing, it can be safely accommodated without damaging the optical fiber.

  Further, according to the present invention described in appendix 3, since the surplus length processing portion is provided on the housing side surface of the front cover, the surplus length processing of the optical fiber is performed by removing the front cover from the exposed side of the installation surface. Thus, the extra length processing of the optical fiber can be easily performed.

  Further, according to the present invention described in appendix 4, since the surplus length processing section is provided in the termination means, the termination means is removed from the exposed side of the installation surface to perform the surplus length processing of the optical fiber. The extra length processing of the fiber can be easily performed.

  Further, according to the present invention described in appendix 5, since the termination means is detachable so as to substantially follow the diagonal line of the casing, even if the termination means is larger than the height or width of the casing, The termination means can be accommodated in the housing, and the area of the termination means can be widened to secure the mounting area for the extra length processing portion, the connection portion fixing means, and the like.

  Further, according to the present invention described in appendix 6, the connection portion fixing means is also stored in a non-exposed state inside the housing, so that the connection portion fixing means can be in the way of a user or a child or the like can be tampered with. It can be prevented from becoming a target of, or detracting from the beauty of the room.

  Further, according to the present invention described in appendix 7, the separation unit fixing means is also stored in the housing in a non-exposed state, so that the separation unit fixing unit is not in the way of the user or mischief of a child or the like. It can be prevented from becoming a target of, or detracting from the beauty of the room.

  Further, according to the present invention described in appendix 8, the optical connector fixing means is also housed in the housing in a non-exposed state, so that the optical connector can be accommodated in the housing when not needed. It is possible to prevent a person from getting in the way, being a subject of mischief such as a child, or impairing the aesthetics of the room.

  Further, according to the present invention described in appendix 9, the optical cable can be fixed by the optical cable fixing means, and the drawing operation of the optical cable can be easily and reliably performed.

  Further, according to the present invention described in appendix 10, since the optical connector can be pulled out through the drawer opening of the front cover, the optical connector can be placed indoors in a state where the housing is not exposed by the front cover. The optical connector can be exposed and only the optical connector can be exposed.

  The present invention can be applied to an optical repeater that receives an optical signal and converts it into an electrical signal, and is useful for effectively utilizing the installation space by embedding and fixing the optical repeater on a wall surface or the like.

DESCRIPTION OF SYMBOLS 1, 2 Optical repeater 10, 40 Case 11, 41 Case main body 12, 42 Decorative plate 13, 61a Slit 14 Optical cable fixing part 14a Cable holding part 14b Bending part 14c Cable holding part 15 Insertion hole 20, 50 Front cover 21 61 Panel body 21a, 43c, 63b Locking piece 22, 62 Extra length processing part 22a, 62a First wall part 22b, 62b Second wall part 23, 64 Connector fixing part 24 Drawer part 30 Mounting tool 31 Storage box 31 31a Opening 31b, 32b Screwing piece 31c, 32a, 32c Screw hole 32 Housing box cover 33, 34 Mounting screw 43 Termination panel fixing part 43a, 63a Supporting piece 43b, 64a Holding piece 43d Projection 60 Termination panel 62c Stopper 63 Connection fixing part W Wall surface OC Optical cable F optical fiber CT optical connector

Claims (4)

A housing capable of accommodating at least a part of an optical cable laid on the non-exposed side of the installation surface or an optical fiber drawn from the optical cable;
Termination means attached to the inside of the housing from the exposed side of the installation surface;
A front cover detachably attached to the housing from the exposed side of the installation surface,
Embedded optical repeater. The termination means is detachably provided in the housing.
The embedded optical repeater according to claim 1. The front cover or the termination means is provided with a surplus length processing section for winding the surplus length portion of the optical fiber.
The embedded optical repeater according to claim 1 or 2. An optical cable fixing means for fixing the optical cable is provided,
The embedded optical repeater according to any one of claims 1 to 3, wherein:

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