JP4115906B2 - Optical termination box - Google Patents

Description

  The present invention includes an outer case that accommodates an optical fiber led out from an optical fiber cable terminal, and the optical fiber or an optical fiber optically connected to the optical fiber is connected to another side of the outer case. The present invention relates to an optical termination box having a connector mounting wall to which an optical connector that can be connected to a connector is mounted.

Conventionally, as an optical termination box for terminating an optical fiber of an optical fiber cable so that it can be connected to a connector, the optical fiber is connected to a side portion of an outer case that accommodates an optical fiber led out from an optical fiber cable terminal. A structure having a connector mounting wall to which a connectable optical connector (optical connector adapter) is mounted is widely adopted (for example, Patent Documents 1 and 2).
JP-A-9-1173738 JP-A-11-167029

As such an optical termination box, a structure having a cable fixing portion for fixing an optical fiber cable terminal to an outer case is common. For example, the optical termination box 50 shown in FIG. 7 is a horizontal installation type optical termination box, and the depth direction in FIG. 7 is set to the vertical direction by mounting on a rack or fixing on the floor with a jig. It will be installed. FIG. 7 is a plan sectional view showing the internal structure of the optical termination box 50. In FIG. 7, this optical termination box 50 has an outer case 53 having a connector mounting wall 52 for supporting an optical connector 58b (here, an optical connector adapter) at one end thereof, on the opposite side (others). Cable fixing portions 55 for fixing the ends of the optical fiber cables 54 are provided on the left and right sides of the end portion.
Here, the cable fixing part 55 includes a gripping part 53a for gripping and fixing the optical fiber cable 54 terminal, and a tension member fixing part 55b for fixing the tension member 54a exposed in a protruding state from the optical fiber cable 54 terminal. In the outer case 53, the end of the optical fiber cable 54 drawn into the outer case 53 from the cable hole (not shown) of the rear wall 56 facing the connector mounting wall 52 is fixed in a predetermined direction. In FIG. 7, reference numeral 57 denotes an extra length storage tray installed for the outer case 53, and an optical fiber 54 b (such as an optical fiber core wire) led out from the end of the optical fiber cable 54, and the outer case 53. A connecting portion 59 (here, a fusion splicing portion) with the optical fiber with connector 58 accommodated therein and the extra lengths of the optical fibers 54b and 58 are accommodated. The optical fiber with connector 58 is an optical fiber having one end terminated with an optical connector 58a (optical connector plug), and the optical fiber 54b of the optical fiber cable 54 is connected to the other end of the optical fiber with connector 58 ( In this case, the optical connector 58a of the connector-attached optical fiber 58 is selectively connected to the plurality of optical connector adapters 58b of the connector mounting wall 52 from the inside of the outer case 53. The optical fiber 60 outside the termination box 50 (optical fiber terminated by an optical connector 60a (optical connector plug)) is terminated so as to be connectable to a connector. In this optical termination box 50, the one that is advantageous in securing workability of drawing the end of the optical fiber cable 54 into the outer case 53 is selected and used from among the cable fixing portions 55 that are opposed to the left and right. Yes.
Also, the optical termination box shown in FIGS. 8A and 8B is attached to the cable fixing portion 61 (cable fixing component) at the other end of the outer case 53 (upper side in FIGS. 8A and 8B). The position can be selectively set to either the left or right of the other end of the light.
Further, in the optical termination box shown in FIGS. 8A and 8B, fixed component mounting bases 62 </ b> A and 62 </ b> B (exterior case 53) for attaching the cable fixing portion 61 to the left and right of the other end of the external case 53. , In which the screw holes 63, 64, etc. for attaching the cable fixing portion 61 are provided), the cable when the cable fixing portion 61 is attached to the left fixed component attaching portion 62A. Fixing direction of optical fiber cable 54 in fixing part 61 (drawing direction) Fixing direction of optical fiber cable 54 terminal in cable fixing part 61 when cable fixing part 61 is attached to fixing part mounting base 62B on the right side (fixing direction) Are not parallel to each other. Retraction direction of the optical fiber cable 54 terminals can be selected.
The optical termination box has the same configuration as the optical termination box shown in FIG. 7 except that the cable fixing portion 61 can be selectively attached to the fixing component mounting base portions 62A and 62B. This also applies to the horizontal installation type.

  However, none of the above-mentioned conventional techniques can widely cope with various drawing directions of the optical fiber cable terminal with respect to the optical termination box. For example, the optical termination box is arranged around the optical termination box. In the case where there is a restriction on the route of the optical fiber cable to be drawn in, there has been a case in which the installation direction of the optical termination box has to be changed in order to be able to fix the optical fiber cable end without difficulty. In particular, in the case of a horizontal installation type optical termination box, for example, the optical termination examples illustrated in FIGS. 6 and 7 are applicable, although it corresponds to various drawing directions of the optical fiber cable into the optical termination box. The end box is horizontal (or nearly horizontal) with respect to the outer case by selecting the cable fixing portion for fixing the optical fiber cable end or by selectively attaching the cable fixing portion to the fixing part mounting base of the outer case. Only the pull-in direction and the fixing direction of the optical fiber cable drawn into the optical fiber cable can be selected. For example, the optical fiber cable terminal can be fixed in accordance with the pull-in of the optical fiber cable from above or below. Is not something that can be realized. Corresponding to this, for example, it is conceivable that a cable fixing portion for horizontal pull-in and a cable fixing portion for vertical pull-in (drawing from the top or the bottom) are provided side by side. New problems such as an increase in size and the complexity of the routing of the optical fiber in the outer case are feared, and the cost increases. Therefore, the fundamental problem cannot be solved at all.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an optical termination box that can easily cope with various drawing directions of an optical fiber cable terminal at a low cost.

In order to achieve the above object, the present invention provides a base plate on which an optical fiber led out from an optical fiber cable terminal is wired , the optical fiber or an optical fiber optically connected to the optical fiber, and another optical fiber. An outer case having a connector mounting wall to which an optical connector that can be connected to the connector is attached, a cable fixing portion to which an optical fiber cable terminal is fixed, and the cable fixing portion provided in the outer case The cable fixing part has a plate-like fixing part main body, and the optical fiber cable terminal can be fixed to a fixing surface which is one surface of the fixing part attaching part. by selection of the mounting direction with respect to parts, the orientation of the fixing surface, so that you can change with respect to the direction perpendicular to the base plate It is, the fixed portion mounting portion, wherein a pipe which extends outside of the outer instrumentation case from the outer case, extending the mounting cable fixing portion in the direction leading end outward from the outer casing of the pipe The optical termination is characterized in that an optical fiber led out from an optical fiber cable terminal fixed to the cable fixing portion is drawn into the outer case through the pipe. Provide a box.

In the present invention, the cable fixing portion may be configured so that the fixing surface is oriented in one of the direction along the base plate and the direction perpendicular to the base plate by selecting an attachment direction with respect to the fixing portion attachment portion. The structure which can do is also employable.

Moreover, in this invention, the structure by which the said cable fixing | fixed part can change the said attachment direction by rotation of the said pipe center axis rotation direction is also employable.

  As described above, according to the present invention, the cable fixing portion has a fixing surface to which the optical fiber cable terminal is fixed, and the fixing surface with respect to the vertical direction can be selected by selecting the mounting direction with respect to the fixing portion mounting portion. Therefore, even when the optical fiber cable terminal reaches the optical termination box from various directions, it is possible to secure workability for fixing the cable fixing portion of the optical fiber cable terminal.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1-4 is a figure which shows the optical termination box 1 of embodiment of this invention, FIG. 1 is a schematic front view of the optical termination box 1, and FIG. 2 is the schematic plan view. 3 and 4 are detailed perspective views of the cable fixing portion 3 to which the optical fiber cable 8 terminal 4 is fixed. 3 and 4 are both fixed portion mounting portions (rotation mounting members; here, pipes, which will be described as pipes) attached to the outer case 4 of the optical termination box 1. 5) shows a state in which the cable fixing portion 3 is fixed with respect to 5, but in FIGS. 3 and 4, the mounting direction of the cable fixing portion 3 with respect to the pipe 5 is around the central axis of the pipe 5 ( That is, the circumferential direction of the pipe 5 is different.

As shown in FIGS. 1 and 2, an optical termination box 1 according to the present invention includes a termination box body 6 and a cable fixing part 3 attached to a fixing part attachment part (pipe) 5 of the termination box body 6. And have. The termination box body 6 has a configuration in which an extra-length storage case (reference numeral 7) and the like are accommodated in a box-shaped outer case 4.
The outer case 4 shown in FIGS. 1 and 2 covers a base plate 41, a connector mounting wall 42 fixed to the base plate 41 and erected on the base plate 41, the extra storage case 7 and the like from the outside. In this way, the structure has the detachable cover 43 attached to the base plate 41, but the exterior case of the optical termination box according to the present invention is not limited to this, and various configurations can be adopted. .

The connector mounting wall 42 constitutes one end (front wall) of the outer case 4, and the connector mounting wall 42 is an optical connector 44 (here, an optical connector adapter, hereinafter referred to as an optical connector). A plurality of optical connector adapters may be attached.
The optical termination box 1 illustrated in FIGS. 1 and 2 is a so-called horizontal installation type optical termination box, and the base plate 41 is installed in a substantially horizontal orientation by being mounted on a rack or the like. However, the optical termination box according to the present invention is not limited to the horizontal installation type, and the installation direction is not particularly limited.

The pipe 5 is passed through a rear wall 44 that constitutes the other end of the outer case 4 that faces the connector mounting wall 42. The pipe 5 is fixed to the outer case 4 (specifically, the base plate 41) by a fixing component 48. In FIG. 1 and FIG. 2, a part (one end) of the pipe 5 housed in the outer case 4 is fixed to the outer case 4 by a fixing component 48 fixed to the base plate 41 and installed in the outer case 4. Although it is fixed, the fixing part for fixing the pipe 5 to the outer case 4 is not necessarily as shown in FIGS. 1 and 2. For example, it is fixed to the rear wall 44 of the outer case 4. It may be a thing fixed to a mounting base protruding from the base plate 41 to the outside of the outer case 4 on the other end side of the outer case 4.
The exterior case 4 does not necessarily have a configuration having the rear wall 44, and may have a configuration in which the other end facing the connector mounting wall 43 is opened.

The cable fixing portion 3 is fixed to an end portion of the pipe 5 that protrudes to the outside of the outer case 4 (protruding end portion; hereinafter referred to as “the other end portion 5a”). An optical fiber cable 8 end is fixed to the cable fixing portion 3 by using a cable fixing member 17 (see FIG. 3) such as an insulation lock tie.
In the optical termination box 1 shown in FIGS. 1 and 2, an optical fiber 8 a extending (extracted) from the end of the optical fiber cable 8 fixed to the cable fixing portion 3 is terminated via a pipe 5. It is drawn into the box body 6. The pipe 8 also functions as a conduit for drawing the optical fiber 8 a from the outside of the outer case 4 into the outer case 4.
An optical fiber (hereinafter also referred to as a terminated optical fiber) 9 is connected to the tip of the optical fiber 8a drawn into the outer case 4 by fusion splicing or the like, and a connection portion between the optical fibers 8a and 9 10 is stored in the extra length storage tray 47 in the outer case 4 together with the extra lengths of the optical fibers 8 a and 9.
In addition, the connection part 10 is not limited to the fusion splicing part which fused-connected the optical fibers 8a and 9, and may be a connector connection by an optical connector, for example.

  The terminated optical fiber 9 is an optical fiber in which the other end opposite to the one connected to the optical fiber 8a on the optical fiber cable 8 side is terminated by an optical connector 9a (optical connector plug) so that the connector can be connected. . The optical connector 9 a at the end of the terminated optical fiber 9 is detachably connected to the optical connector adapter 44 from the inside of the exterior case 4. The optical connector adapter 44 has a distal end of an optical fiber 31 (hereinafter also referred to as an external optical fiber) 31 outside the outer case 4 that is terminated so as to be connectable by an optical connector 31a (optical connector plug). When the optical connector 31a at the tip of the optical fiber 31 is inserted and connected to the optical connector adapter 44, the optical connector 9a at the tip of the termination optical fiber 9 and the tip of the external optical fiber 31 are connected. By connecting the optical connector 31 a within the optical connector adapter 44, the optical fibers 9 and 31 are optically connected to each other. As a result, the external optical fiber 31 is optically connected to the optical fiber 8 a of the optical fiber cable 8 through the termination optical fiber 9.

  The optical connector adapter 44 and the optical connector 9a at the end of the terminated optical fiber 9 are formed by inserting the optical connector 9a into the optical connector adapter 44 from the inside of the exterior case 4 and connecting the optical fiber 8a of the optical fiber cable 8 to the exterior. An optical connector (symbol 7) that terminates so as to be connectable to the optical fiber 31 (external optical fiber) outside the case 4 is configured. In the optical termination box 1 illustrated in FIG. 2, a plurality of optical connectors 7 are arranged on the connector mounting wall 42, and an optical fiber cable is connected by switching connection of the optical connector 31 a at the tip of the external optical fiber 31 to the optical connector 7. The switching connection of the optical fiber 31 to the 8-side optical fiber 8a can be realized. There is no limitation in particular as the optical connector 7, For example, an optical connector receptacle etc. may be sufficient.

  The optical fiber 8a, the terminated optical fiber 9, and the optical fiber 31 (external optical fiber) of the optical fiber cable 8 are multi-core or single-core optical fibers, such as an optical fiber core wire, an optical fiber strand, Various configurations such as an optical fiber cord can be adopted. The optical connector 9a at the tip of the terminated optical fiber 9 and the optical connector 31a at the tip of the optical fiber 31 are multi-core or single-core optical connector plugs, and are not particularly limited. As a single-fiber optical connector, for example, an SC-type optical connector (SC: Single fiber Coupling optical fiber connector; F04-type optical connector established in JIS C 5973), for example, an MPO-type optical connector is used. (MPO: Multifiber Push-On. F13 type optical connector established in JIS C 5982) can be used.

  3 and 4, the cable fixing portion 3 has a configuration in which a plate-like fixing portion main body 11 is provided with a cable fixing means for fixing the end of the optical fiber cable 8 to the fixing portion main body 11. . Specifically, the cable fixing portion 3 has a terminal fixing portion 12 for fixing an optical fiber cable 8 terminal (particularly, a portion where an outer sheath (outer skin) is present) to the cable fixing portion 3 as a cable fixing means. And a tension member fixing portion 13 for fixing a portion of the tension member 8b (steel wire) housed in the optical fiber cable 8 that extends from the end of the optical fiber cable 8.

  The fixing portion main body 11 has a fixing surface 14 to which the end of the optical fiber cable 8 is fixed. Specifically, the fixing surface 14 is one surface of the plate-shaped fixing portion main body 11, and a plurality of optical fiber cable 8 terminals fixed to the fixing portion main body 11 by the cable fixing means are provided on the fixing surface 14. (6 in FIG. 3 and FIG. 4) can be fixed side by side. In the cable fixing portion 3 of this embodiment, a plurality of pairs of terminal fixing portions 12 and tension member fixing portions 13 are provided, and a plurality of optical fiber cable 8 ends can be fixed side by side on the fixing surface 14.

In this embodiment, the cable fixing portion 3 is fixed by pressing the fixing portion main body 11 toward the outer peripheral surface of the other end portion 5a of the pipe 5 using fixing means such as an insulation lock tie. It is like that. Hereinafter, for the cable fixing portion 3 and the fixing portion main body 11, the direction along the central axis of the pipe other end portion 5a is referred to as “lateral direction”, and the direction orthogonal to the horizontal direction (in the thickness direction of the fixing portion main body 11). The description will be made assuming that the direction (orthogonal to the vertical direction) is “vertical direction”.
The end of the optical fiber cable 8 fixed to the fixing surface 14 of the fixing portion main body 11 is fixed in such a direction that the central axis direction (in other words, the direction of the tension member 8b) is in the vertical direction (or the direction along the vertical direction). Fixed to the surface 14. A plurality of optical fiber cable 8 terminals can be fixed to the fixing surface 14 in the horizontal direction in an array state.

Holes 16 (fixing portions) through which wire-like fixing tools 17 such as an insulation lock tie for fixing the end portion (the other end portion 5a) of the pipe 5 to the fixing portion main body 11 are passed through both ends in the horizontal direction of the fixing portion main body 11. A through hole penetrating the main body 11 is formed. Both ends in the horizontal direction of the fixing portion main body 11 function as pipe fixing base portions 15 for fixing the pipe 5. The cable fixing part 3 is fixed to the pipe other end part 5a in a direction in which the horizontal direction is along the central axis direction (and its extension) of the pipe other end part 5a. In addition, by fixing one end of the fixing portion main body 11 in the horizontal direction to the other end 5a of the pipe, the cable fixing portion 3 extends along the extension of the central axis of the pipe 5 from the tip of the other end 5a of the pipe. It is provided to extend. The cable fixing portion 3 is fixed to the other end 5a of the pipe so that the fixing surface 14 faces the pipe 5 and the fixing surface 14 is pressed against the outer peripheral surface of the pipe 5.
The other end 5a of the pipe fixed to the pipe fixing base part 15 is projected from the fixing part main body 11 so as to rise on the fixing surface 14 at a longitudinal interval in the pipe fixing base part 15. When the fixing work using the wire-shaped fixture 17 is performed, the pair of protruding pieces 18 are connected to the other end 5a of the pipe of the fixing portion main body 11. There is an advantage that the fixing work can be efficiently performed by fulfilling the function of preventing the positional deviation with respect to.

  In order to fix the pipe other end portion 5 a to the pipe fixing base portion 15 using the wire-like fixing tool 17, a part of the fixing portion main body 11 (a part of the pipe fixing base portion 15 is used). ) And a wire-like fixture 17 wound around the pipe 5 from the outside so that a part of the fixing part main body 11 (a part of the pipe fixing base part 15) and the pipe 5 are bound together, and the pipe fixing base part 15 And the other end 5a of the pipe are fixed. In FIG. 3, a portion of the pipe fixing base 15 located between the two holes 16 is piped by a wire-like fixing tool 17 that is passed through two holes 16 formed in the pipe fixing base 15. The configuration for fixing the other end portion 5a so as to be bound is exemplified, but the pipe fixing base portion may be any configuration that can be fixed by being bound to the other end portion 5a of the pipe by the wire-like fixture 17, For example, the structure etc. which functioned the protrusion formed by the punching or cutting process of the horizontal direction both ends of the fixing | fixed part main body 11 as a pipe fixing base part, etc. are employable.

Here, the pipe 5 is a sufficiently flexible material (flexible tube) made of rubber, synthetic resin, or the like, but is not a flexible material (for example, metal or It may be formed of a hard resin or the like. In the case of a flexible tube, the other end portion 5a of the pipe 5 needs to have a rigidity that does not hinder the fixing of the cable fixing portion 3 by the wire-like fixture 17, and for example, the other end portion 5a In addition, a configuration in which a ring formed of a hard material such as metal is mounted can be employed.
3 and 4 exemplify the configuration in which the fixing portion main body 11 (specifically, the pipe fixing base portion 15) is brought into direct contact with the outer peripheral surface of the pipe 5 and fixed with an insulation lock tie, the pipe 5 and the fixing portion are illustrated. A member such as a spacer (for example, a receiving member that receives the pipe 5 by a curved surface in surface contact with a part of the outer peripheral surface of the pipe 5) may be interposed between the main body 11 and the like. Further, the fixing means for fixing the cable fixing portion 3 to the other end portion 5a of the pipe 5 is not limited to the wire-like fixing device 17 described above. For example, the other end portion 5a of the pipe 5 is connected to the cable fixing portion 3. By fixing the other end portion 5a of the pipe 5 by a clamping mechanism sandwiched between the fixing portion main body 11 and the clamping member or a gripping mechanism provided on the fixing portion main body 11, the fixing portion main body 11 is fixed. Various configurations such as a configuration of fixing to the other end portion 5a of the pipe 5 can be employed.

3 and 4, the terminal fixing portion 12 is a portion obtained by processing the fixing portion main body 11 in order to fix the optical fiber cable 8 end to the cable fixing portion 3 using a wire-like fixing tool 19 such as an insulation lock tie. More specifically, a plurality of fixing protrusions 20 fixed to the optical fiber cable 8 end so as to be bundled together with the end of the optical fiber cable 8 by the wire-like fixing device 19 by punching of the fixing portion main body 11 or the like. It is a formed region. 3 and 4, reference numeral 21 denotes a hole (window) formed in the fixing portion main body 11, and each fixing protrusion 20 has a shape protruding into the hole 21. In addition, the hole 21 has a shape that extends in the lateral direction of the fixing portion main body 11 at one end portion in the vertical direction of the fixing portion main body 11, and the fixing protrusion 20 formed on the terminal fixing portion 12 includes: A plurality of rows are arranged in the horizontal direction at intervals. Thereby, the terminal fixing | fixed part 12 can fix the terminal of the several optical fiber cable 8 to an arrangement | sequence state. The hole 21 functions as an insertion space for allowing the wire-shaped fixture 19 to pass through the fixing portion main body 11 in the thickness direction of the fixing portion main body 11 and to be wound around the fixing protrusion 20.
Note that the fixing protrusion 20 does not necessarily have a shape that protrudes into the hole 21 formed in the fixing portion main body 11. For example, the fixing protrusion 20 has a shape that protrudes to the end portion of the fixing portion main body 11. May be.
Further, the terminal fixing portion for fixing the optical fiber cable 8 end to the cable fixing portion 3 is not limited to a configuration in which the end of the optical fiber cable 8 is fixed using the wire-shaped fixing tool 19. A configuration in which the cable 8 terminal and the fixing portion main body 11 are fixed so as to be sandwiched between two members (a configuration in which the fixing is realized by bolting the two members) or the fixing portion main body 11 is provided. Various configurations such as a configuration in which the end of the optical fiber cable 8 is gripped and fixed by the gripping mechanism can be employed.

The tension member fixing portion 13 is the other end in the vertical direction of the fixing portion main body 11 (in the vertical direction of the fixing portion main body 11, opposite to the “one end in the vertical direction” where the terminal fixing portion 12 is provided). The tension member 8b extended from the end of the optical fiber cable 8 is fixed to the tension member fixing base 22 provided at the end of the optical fiber cable 8 with screws 23. Specifically, the tension member fixing base 22 is an elongated member formed of a material having sufficient rigidity such as a metal, and the fixing portion main body 11 is formed at the other longitudinal end of the fixing portion main body 11. It is being fixed to the fixing | fixed part main body 11 so that it may extend along the horizontal direction.
In the cable fixing portion 3, the end of the optical fiber cable 8 is fixed to the end fixing portion 12 using the wire-shaped fixture 19, and the tension member 8 b extending from the end of the optical fiber cable 8 is attached to the tension member fixing base 22. By fixing, the optical fiber cable terminal 8 is firmly fixed.

  3 and FIG. 4, specifically, the tension member 8b extending from the end of the optical fiber cable 8 fixed to the cable fixing portion 3 is the fixing member. A tension member fixing base 22 having a tension member insertion hole 24 to be inserted from one end side in the longitudinal direction of the main body 11 is adopted, and the tension member 8b is inserted into the tension member insertion hole 24 to When the screw 23 is screwed into the fixing base 22, the tension member 8 b in the tension member insertion hole 24 receives the side pressure by the screw 23 and is fixed in the tension member insertion hole 24. The fixing portion may be any structure that can firmly fix the tension member, and various configurations can be employed.

  In the cable fixing portion 3, the end of the optical fiber cable 8 is arranged between the terminal fixing portion 12 and the tension member fixing portion 13 so that the end from which the optical fiber 8 a is led out is fixed to the fixing portion main body 11. Fixed. The optical fiber 8a is drawn and wired from the mouth of the end of the optical fiber cable 8 to the pipe opening of the pipe other end 5a by being routed on the fixed surface 14. On the fixing surface 14, the area between the terminal fixing part 12 and the tension member fixing part 13 is caused to function as a wiring area 25 for routing the optical fiber 8a. Since the optical fibers 8a wired between the mouth and the pipe opening of the other pipe end 5a can be assembled, the optical fiber 8a is connected to the optical fiber cable 8 at the terminal fixing portion 12 or the tension member fixing portion 13. It is possible to prevent the terminal from being obstructed (or unfixed).

  In this embodiment, the pipe other end portion 5a is cylindrical, and the cable fixing portion 3 is fixed to the pipe other end portion 5a around the central axis of the pipe other end portion 5a (in the outer peripheral direction of the pipe other end portion 5a). The position can be set freely. Moreover, when using the wire-shaped fixing tool 17 as a fixing means of the cable fixing | fixed part 3 with respect to the pipe other end part 5a, the wire shape made into the ring shape which accommodates the pipe other end part 5a and the cable fixing | fixed part 3 inside. If the fastening of the fixture 17 is loosened to such an extent that the other end 5a of the pipe and the cable fixing portion 3 are not firmly fixed, the cable fixing portion 3 is moved around the central axis of the other end 5a of the pipe (pipe other By rotating in the outer peripheral direction of the end portion 5a, the fixing position of the cable fixing portion 3 with respect to the pipe other end portion 5a can be easily set, adjusted, or changed. Here, the pipe other end portion 5a functions as a rotation attachment member for setting the orientation of the fixing surface 14 by the rotation of the cable fixing portion 3 with respect to the pipe other end portion 5a.

In this optical termination box 1, the direction of the fixing surface 14 can be freely set by setting the direction of fixing (attaching) the cable fixing portion 3 to the other end portion 5 a of the pipe 5 drawn on the floor or the like. Even if there is a restriction in the direction in which the optical fiber cable 8 is drawn into the installation location of the box 1, the setting of the orientation of the fixing surface 14 will not adversely affect the optical communication, such as preventing the optical fiber cable 8 from being bent excessively. It is possible to realize the fixing of the end of the optical fiber cable 8 by satisfying the above condition. In particular, in this optical termination box 1, the setting of the fixing (attaching) direction of the cable fixing part 3 with respect to the pipe other end part 5 a makes the direction of the fixing surface 14 the direction along the horizontal direction (see FIG. 3), and Since it can be set in any direction along the vertical direction (see FIG. 4), for example, when the optical fiber cable 8 is drawn into the installation place of the optical termination box 1 from above or from below (that is, In the case of the direction along the vertical direction), the fixing surface 14 of the cable fixing portion 3 is set in the direction along the vertical direction by setting the fixing (attachment) direction of the cable fixing portion 3 with respect to the pipe other end portion 5a. Therefore, it is possible to easily fix the optical fiber cable 8 end to the cable fixing portion 3, and to fix the optical fiber cable 8 end widely corresponding to various directions of the optical fiber cable 8. It can be realized.
Furthermore, in this optical termination box 1, the installation position and orientation of the cable fixing portion 3 on the floor can be set by, for example, bending a pipe 5 (flexible tube) drawn on the floor. There is an advantage that the end of the optical fiber cable 8 can be fixed corresponding to various directions of the cable 8.

  Further, in this optical termination box 1, the positional relationship between the terminal fixing portion 12 and the tension member fixing portion 13 can be easily reversed by selecting one of the pipe fixing base portions 15 on both lateral sides of the cable fixing portion 3. Further, as illustrated in FIGS. 3 and 4, in addition to the pipe fixing base part 15, the vertical position of the cable fixing part 3 is shifted with respect to the pipe fixing base part 15. However, the pipe fixing base part (reference numeral 15A) for fixing the cable fixing part 3 to the pipe other end part 5a by using a wire-like fixing tool is provided. There is also an advantage that adjustment of the fixing position of the cable fixing portion 3 with respect to the pipe other end portion 5a can be easily performed in the vertical direction of the cable fixing portion 3 only by selection. However, in FIGS. 3 and 4, the pipe fixing base portion 15 </ b> A uses the wire-like fixing tool passed through the hole (through hole) drilled on the tension member fixing base 22 to use the tension member fixing base 22. However, the present invention is not limited to this, and, like the pipe fixing base part 15, a part of the fixing part main body 11 is made to function as a pipe fixing base part. Various configurations such as the configuration described above and a structure in which the pipe other end portion 5a is gripped and fixed by a gripping mechanism using a gripping part with a demon or the like can be employed.

FIG. 5 shows an optical termination box 1 according to the second embodiment of the present invention.
In FIG. 5, the pipe 5 is not provided as in FIGS. 1 to 4, and a bracket (fixed portion mounting portion) 45 is provided in the outer case 4 as a rotating mounting member that rotatably supports the cable fixing portion 3. It has been. Since the bracket 45 rotatably supports the cable fixing portion 3, the cable fixing portion 3 can be attached to the exterior case 4 by changing the direction in the vertical direction.
Further, as the rotation mounting member, for example, a structure in which the receiving member to which the cable fixing portion is mounted is rotatably supported by a bearing provided in the outer case can be adopted. In this case, the cable fixing portion can be fixed in a desired direction by fixing the receiving member to the bearing or the outer case with fixing means such as screws.

FIG. 6 shows an optical termination box 1 according to the third embodiment of the present invention.
FIG. 6A shows a schematic plan view of the optical termination box 1, and FIG. 6B shows a schematic front view of the optical termination box 1.
In this embodiment, the termination box body 6 has a structure in which a slide guide frame 46 is attached to the outside of the outer case 4. The outer case 4 is slidable relative to the slide guide frame 46. This is advantageous in adjusting the position of the cable fixing portion 3.

In the embodiment of the present invention, the optical termination box 1 is a so-called horizontal installation type, but is not limited to this, and can also be applied as a vertical optical termination box 1 attached to a wall or the like.
Moreover, although the pipe was used as the fixing | fixed part attaching part 5, it is not limited to this, A solid stick | rod etc. can also be used.
In addition, a pipe as the fixed portion mounting portion 5 is fixed to the rear wall 44 side that constitutes the other end portion facing the connector mounting wall 42 of the outer case 4, but the mounting position of the fixed portion mounting portion is the rear wall. It is not limited to the 44 side, and any side wall side (side portion side) of the outer case 4 may be used.

It is a schematic front view of the optical termination box by embodiment of this invention. It is a schematic plan view of the optical termination box by embodiment of this invention. It is a detailed perspective view of the cable fixing part by embodiment of this invention. It is a detailed perspective view of the cable fixing part by embodiment of this invention. It is a schematic plan view of the optical termination box by the 2nd Embodiment of this invention. It is the schematic of the optical termination box by the 3rd Embodiment of this invention. It is a figure which shows the exterior case provided with the cable fixing | fixed part as a prior art. It is a figure which shows the exterior case provided with the cable fixing | fixed part as a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Optical termination box, 3 ... Cable fixing part, 4 ... Exterior case, 5 ... Fixing part attaching part, 7 ... Optical connector, 8 ... Optical fiber cable, 8a ... Optical fiber, 9 ... Optical fiber, 14 Fixing surface, 31 Optical fiber, 42 Connector mounting wall

Claims (3)

An optical fiber cable (8) is connected to a base plate (41) to which an optical fiber (8a) led out from a terminal is wired, and the optical fiber (9) optically connected to the optical fiber or another optical fiber. An outer case (4) having a connector mounting wall (42) to which an optical connector (7) terminated so as to be connectable to the connector (31) is mounted;
A cable fixing part (3) to which the optical fiber cable terminal is fixed;
A fixing portion mounting portion (5, 45) provided on the outer case and to which the cable fixing portion is mounted;
The cable fixing portion has a plate-like fixing portion main body (11), and the optical fiber cable terminal can be fixed to a fixing surface (14) which is one surface thereof , and selection of an attachment direction with respect to the fixing portion attaching portion is selected. The orientation of the fixed surface can be changed with respect to the direction perpendicular to the base plate ,
The fixing portion mounting portion is a pipe extending from the outer case to the outside of the outer case, and the cable fixing portion is attached to the leading end of the pipe in the extending direction from the outer case; An optical termination box (1) characterized in that an optical fiber led out from an optical fiber cable terminal fixed to the cable fixing portion is drawn into the outer case through the pipe. . The cable fixing portion may be configured such that the direction of the fixing surface can be set to one of a direction along the base plate and a direction perpendicular to the base plate by selecting an attachment direction with respect to the fixing portion attachment portion. The optical termination box according to claim 1. 3. The optical termination box according to claim 1 , wherein the cable fixing portion is capable of changing the mounting direction by rotating around the pipe center axis . 4.

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