JP3638867B2 - Optical connection module - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical connection module for connecting a central office optical cord and a central office optical cord.
[0002]
[Prior art]
As a conventional optical connection module, for example, an optical branching module described in Japanese Patent Laid-Open No. 9-258033 is known. The optical branching module described in this publication includes a main body that stores a plurality of branch connection tape cords and optical components, and a drawer case that is separable from the main body. In the drawer case, a connector that detachably supports an optical connector that optically connects the terminating tape cord to the branch connection tape cord and an optical connector that optically connects the selection tape cord to the branch connection tape cord. A holder is provided.
[0003]
Japanese Patent Application Laid-Open No. 9-258035 also describes an optical branching module similar to the above.
[0004]
[Problems to be solved by the invention]
However, in the above prior art, when connecting the termination side tape cord and the branch connection tape cord,
▲ 1 ▼ Pull out the drawer case to the main body
(2) Open the lid on one side of the drawer case and take out the optical connector from the connector holder in the drawer case.
(3) Connect the termination side tape cord and the branch connection tape cord with an optical connector.
(4) The extra connection length of the optical connector and branch connection tape cord is stored in the drawer case.
(5) Reconnect the drawer case to the main unit
A plurality of processes are necessary, and the work at the time of connection is complicated.
[0005]
The objective of this invention is providing the optical connection module which can improve the workability | operativity at the time of connecting the connection optical cord and the outside optical cord.
[0006]
  The present invention relates to an optical connection module that is accommodated in an optical termination and connects a station-side optical cord and a station-side optical cord, and stores a connection length of a connection optical cord connected to the station-side optical cord. An optical connector that is provided on the outer surface of one end side of the module main body and that connects the connecting optical cord led out from the connecting optical cord storage portion and the outside optical cord, A connector holding member that is detachably held in a state where the module main body is housed in the optical termination frame,A partition plate that is arranged in parallel to the side surface of the module main body and forms two extra length storage areas for storing the connection extra length of the connection optical cord, and is formed on one side of the partition plate, A guide groove for guiding the cord, and a guide hole formed in the partition plate so as to be continuous with the guide groove, and for guiding the connecting optical cord to the other surface side of the partition plate,With the minimum bending radius of the optical cord for connection secured, the extra length of the optical cord for connection can be pushed and retracted.There are two sets of connector holding members, and these connector holding members are provided at different positions corresponding to the respective extra length storage areas on the outer surface on one end side of the module body.An optical connection module.
[0007]
  In such a connection module, when connecting the outside-side optical cord and the connection optical cord, first, the connection extra length of the connection optical cord stored in the connection optical cord storage unit is pulled out from the module body. The connecting optical cord and the outside optical cord are connected by an optical connector, and the optical connector is held by the connector holding member. Thereafter, the connection extra length of the connection optical cord is pushed into the module body. Thus, the connection work between the outside-side optical cord and the connecting optical cord can be performed in a state where the optical connecting module is accommodated in the optical termination. This is because the connector holding member is provided not on the inside of the module body but on the outer surface on one end side of the module body, and with the minimum bending radius of the connecting optical cord secured, the extra length of the connecting optical cord can be pushed in and pulled out. This is possible by configuring the connecting optical cord storage portion so as to be stored in the housing. Accordingly, unnecessary work such as opening the module lid is unnecessary, and workability when connecting the connecting optical cord and the outside optical cord is improved. Further, since the connection work can be performed while the optical connection module is housed in the optical termination frame, the extra length of the connection optical cord is not required, and the size of the connection optical cord storage portion can be reduced accordingly. This makes it possible to reduce the size of the optical connection module. Furthermore, by making the shape of the cord outlet formed in the module main body a shape corresponding to the cross-sectional shape of the connecting optical cord, the connecting optical cord can be pulled out without being twisted.
  Also, a partition plate that forms two extra-length storage areas, a guide groove for guiding the connection optical cord, and a connection optical cord to the other surface side of the partition plate in the connection optical cord storage unit And two sets of connector holding members are provided at portions corresponding to the respective extra length storage areas on the outer surface on one end side of the module body, so that two sets of connection optical cords are provided in the connection optical cord storage section. Can be stored in a space-efficient manner. At this time, in a state where two sets of connecting optical cords are inserted together in the guide groove, one connecting optical cord is moved from the guide hole to the extra length storage area on the other surface side of the partition plate. The connection extra length of the pair of connecting optical cords can be easily stored.
  Furthermore, by providing two sets of connector holding members at positions corresponding to the respective extra length storage areas on the outer surface on one end side of the module main body, the two sets of connector holding members are arranged in the thickness direction of the module main body. Even if they are arranged close to each other, the possibility of touching the adjacent optical connector in the connected state is reduced when the outside-side optical cord and the connecting optical cord are connected or when the connection is switched. For this reason, the dimension of the module body in the thickness direction can be reduced while preventing the transmission signal of other live wires from being affected.
[0008]
Preferably, the connecting optical cord storage portion is provided around a first bending radius restricting member that restricts the bending radius of the connecting optical cord to be equal to or greater than the minimum bending radius, and connected to the first bending radius restricting member. And a second bending radius restricting member for restricting the bending radius of the optical cord to a minimum bending radius or more, and connecting light in a region between the first bending radius restricting member and the second bending radius restricting member. The connection extra length of the cord is wound and stored. As a result, it is possible to realize the connection optical cord storage portion having a simple structure that the connection extra length of the connection optical cord can be pushed and pulled out in a state where the minimum bending radius of the connection optical cord is secured.
[0009]
Preferably, the module main body has an outside optical code storage portion for storing a connection extra length of the outside optical cord. As a result, there is no need to provide a member for storing the extra connection length of the outside optical cord on the frame of the optical termination frame. Therefore, a plurality of outside optical cords connected to a plurality of optical connection modules can be provided. Inconveniences such as entanglement of the outside-side optical cord that occur when stored together are avoided. In this case, since the structure of the frame is simplified, more optical connection modules can be accommodated if the size of the frame can be reduced or the size of the frame is not changed. Note that the reason why the outside-side optical cord storage portion can be provided in the module body without increasing the size of the optical connection module is that the space for the connection optical cord storage portion is reduced as described above. doing.
[0012]
Preferably, the connector holding member is disposed below the first hook portion for holding the connecting optical cord and the first hook portion, and holds the optical connector so as to restrain the optical connector in the front-rear direction. And a second hook portion. In this case, when holding the optical connector with the connection optical cord and the outside optical cord connected to the connector holding member, the optical connector is dropped after the connection optical cord is hooked on the first hook portion. Hang on the second hook. When removing the optical connector from the connector holding member, the optical connector is lifted and pulled out from the second hook portion, and then the connection optical cord is pulled out from the first hook portion. Thus, the optical connector can be easily attached to and detached from the connector holding member.
[0013]
Further, preferably, the module main body has an optical component storage portion for storing an optical component including an optical coupler portion connected to the connection optical cord, and the test optical cord is branched and connected to the optical coupler portion. ing. Thus, by connecting the test optical cord to the optical pulse tester, it is possible to cope with an optical communication network that requires an optical line test function.
[0014]
  In this case, the module bodyThe upper end of the outer surface at one end isIn order to guide the test optical cord downward so as to ensure the specified bending radius of the test optical cordIt has a curved surface in which a guide groove extending in a curved shape in the vertical direction is formed, and at the lower end of the curved surface,Test optical cord inserted into the guide grooveHold downA pressing member is provided. Thus, for example, when connecting the test optical cord to an optical switch or the like disposed above the optical connection module, the test optical cord is placed at a position lower than the height position of the optical switch and the minimum curvature radius is set. It can be routed in a secured state.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the optical connection module according to the present invention will be described below with reference to the drawings.
[0016]
FIG. 1 is a front view showing an optical termination frame containing a plurality of optical branching modules as an embodiment of the optical connection module according to the present invention. In the figure, an optical termination 1 has a frame 3 having a cable introduction part 2 provided on the upper surface, and the cable introduction part 2 includes a plurality of local optical cables connected to a transmission device (not shown). 4 and a plurality of outside optical cables 5 connected to the subscriber side are secured. A plurality of alignment elements 6 are stacked on the right end in the frame 3, and the alignment elements 6 hold a plurality of site-side optical cords 7 extending from the site-side optical cable 4 in an aligned state. Here, each optical cord extending from the inside optical cable 4 is optically distributed to a plurality of optical cords 7 by an optical splitter module (not shown), and these optical cords 7 are held by the alignment element 6.
[0017]
  On the left side in the frame 3, a module storage frame 9 having a multi-stage (here, four-stage) structure for storing a plurality of optical branching modules 8 is installed. A plurality (for example, 63) of optical branching modules 8 are accommodated in parallel in each stage of the module housing frame 9. As shown in FIG. 2, the optical branching module 8 is inserted into the module housing frame 9 from the back side (X direction side in the figure) of the optical termination 1. The plastic fixing claw member 10 provided on the front surface of the optical module 8 is a module housing frame.9It connects with the latching | locking part 8a.
[0018]
The optical branching module 8 connects the outside optical cord 11 extending from the outside optical cable 5 and the local optical cord 7 via the connecting optical cord 12, and also connects the connecting optical cord 12 and the test optical cord 13. Is a branch connection. The test optical cord 13 is connected to a fiber selector (optical switch) 14 disposed above the optical branching module 8. The fiber selector 14 is an optical pulse test disposed below the module housing frame 9. A device 15 is connected. Here, the station inner side optical cord 7 is a single-core cord, and for example, 16 station inner side optical cords 7 are connected to the connection optical cord 12. Further, the outside optical cord 11 is, for example, an eight-core tape cord, and the test optical cord 13 is, for example, a sixteen-core tape cord or two eight-core tape cords.
[0019]
The optical branching module 8 has a module main body 16 in which optical components, a connection optical cord 12 and a test optical cord 13 are housed. An optical connector adapter (16-unit MU simple receptacle) 17 connected to the connection optical cord 12 in the module main body 16 is attached above the fixing claw member 10 on the front surface of the module main body 16. The station inner side optical cord 7 is connected to 17. A wiring tray 18 is provided on the front side of each stage of the module housing frame 9, and a plurality of local optical cords 7 are placed on the wiring tray 18 in a state of being bundled by a batch pressing member 19. . The connecting optical cord 12 and the outside optical cord 11 are connected by an 8-fiber MT optical connector 20, and the testing optical cord 13 and the fiber selector are connected by a 16-fiber MT optical connector 21.
[0020]
A terminal number is printed on each cap portion 17a of the optical connector adapter 17, and a marker 22 for identifying the terminal number is printed on each side (see FIG. 3). Thereby, even if the optical cable 7 inside the office is connected to the optical connector adapter 17, the terminal number can be easily recognized and identified.
[0021]
Further, a movable plate 23 having a handle 23a and capable of being pushed and pulled in the front-rear direction is provided above the optical connector adapter 17 on the front surface portion of the module body 16, and equipment information is provided on the front end surface of the movable plate 23. A seal 24 with a two-dimensional bar code for managing (article code, manufacturer, year of manufacture, serial number, etc.) is attached (see FIG. 3). As a result, even if the local optical cord 7 is connected to the optical connector adapter 17, the barcode is printed on the seal 24 by the barcode reader by pulling the moving plate 23 forward (see the two-dot chain line in FIG. 2). The bar code can be read reliably. Accordingly, it is possible to check the facility information without touching the plurality of local optical cords 7 connected to the optical connector adapter 17. Further, a bar code seal 26 for managing facility information is also attached to the front end surface of the protrusion 25 provided at the upper end of the rear surface of the module body 16 (see FIG. 6). Thereby, equipment information can be checked not only on the front side of the optical termination 1 but also on the back side.
[0022]
The internal configuration of the optical branching module 8 is shown in FIG. In the figure, the inside of the module main body 16 of the optical branching module 8 is generally composed of an optical component storage unit 27, a connection optical code storage unit 28, and an outside optical code storage unit 29.
[0023]
The optical component storage unit 27 stores an optical coupler unit 30 connected to two sets of connecting tape core wires (connecting optical cords) 12. From the optical coupler unit 30, two sets of test tape core wires are stored. (Test optical cord) 13 is branched. The two sets of connecting tape core wires 12 are each divided into single-core optical cords 12 a at the single-core branch portion 31, and each single-core optical cord 12 a is connected to the optical connector adapter 17. The optical component storage unit 27 stores a plurality of guide members including R guides 32a and 32b and a plurality of holding members 33 having slits for entering and exiting the cord. The precautionary tape core wire 13 is routed along the R guides 32a and 32b and held by the holding member 33. The plurality of guide members including the R guides 32a and 32b are configured to maintain the minimum bending radius (30 mm) of the connecting tape core 12 and the test core 13.
[0024]
A connecting optical cord storage portion 28 is arranged on the rear side of the optical component storage portion 27. The connecting optical cord storage section 28 has a partition plate 34 arranged in parallel to the side surface 16a (see FIG. 2) of the module body 16, and the partition plate 34 provides a surface side (the surface side in FIG. 4). ) A surplus length storage area and a back side surplus length storage area are formed. In each extra length storage area, one extra connection length of the connecting tape core wire 12 held by the optical component storage unit 28 is stored.
[0025]
Each of the front side surplus length storage area and the back side surplus length storage area is provided with an inner bending radius regulating member 35 composed of R guides 35a and 35b. An outer bending radius restricting member 36 having a guide 36a is disposed. The R guides 35a and 35b and the R guide 36a have curved surfaces that restrict the bending radius of the connecting tape core wire 12 to a minimum bending radius (30 mm) or more. In the region between the inner bending radius regulating member 35 and the outer bending radius regulating member 36, the connection extra length of the connecting tape core wire 12 is wound and stored.
[0026]
A cord introduction port 37 for introducing the two connecting tape core wires 12 from the optical component storage unit 27 is provided at the lower part of the outer bending radius regulating member 36 in the front side surplus length storage region. On the surface side, a guide groove 38 is formed continuously to the cord introduction port 37. The guide groove 38 has a curved shape that ensures the minimum radius of curvature of the connecting tape core wire 12, and extends from the cord introduction port 37 toward the inner bending radius regulating member 35. Further, a guide hole 39 that is continuous with the guide groove 38 is formed between the R guides 35 a and 35 b of the inner bending radius regulating member 35 in the partition plate 34. The guide hole 39 extends in a curved shape along the R guides 35a and 35b so that the connecting tape core wire 12 inserted into the guide groove 38 can be easily guided to the rear side surplus length storage region. .
[0027]
Further, a cord outlet 40 is provided in the upper part of the rear surface portion of the module body 16 to lead out the connection extra length of the connecting tape core wire 12 housed in the connection optical cord housing portion 28 from the inside of the module body 16. ing. The height position of the cord outlet 40 substantially coincides with the upper end position of the R guide 35 b of the inner bending radius regulating member 35. Thereby, the connecting tape core wire 12 wound along the R guide 35 b can be smoothly put in and out from the cord outlet 40. The shape of the cord outlet 40 is a shape corresponding to the cross-sectional shape of the connecting tape core wire 12. As a result, the connecting tape core wire 12 can be pulled out from the module body 16 without being twisted.
[0028]
When the connecting tape core wire 12 is stored in the connecting optical cord storage portion 28, the two connecting tape core wires 12 fastened by the optical component storage portion 27 are gathered together from the fiber introduction port 37 to guide grooves. 38. Then, either one of the two connecting tape core wires 12 is brought to the back side surplus length storage region through the guide hole 39. Thereby, the two connecting tape core wires 12 can be easily distributed to the respective extra-length storage areas.
[0029]
In each excess length storage area, the connecting tape core wire 12 is wound a plurality of times along the inner bending radius regulating member 35, and then the leading end side of the connecting tape core wire 12 is connected to the module main body 16 from the cord outlet 40. Take it out. At this time, the number of windings of the connecting tape core 12 is adjusted, and the connecting tape core 12 is wound by winding the connecting tape core 12 as shown in FIG. 5A. In each extra-length storage area, it is held so as to be inserted in the longitudinal direction so as not to be twisted. As a result, as shown in FIG. 5B, the connecting tape core wire 12 can be pulled out from the module body 16 by a predetermined length. That is, the connecting tape core wire 12 can be pushed into and pulled out of the connecting optical cord storage portion 28 in the module body 16. At this time, the minimum curvature radius of the connecting tape core wire 12 is always ensured regardless of the pushing and pulling of the connecting tape core wire 12, so that the optical properties of the connecting tape core wire 12 are not deteriorated. Connection extra length can be taken.
[0030]
Returning to FIG. 4, an outside-side optical cord storage unit 29 is provided below the connection optical cord storage unit 28. The outside optical code storage unit 29 also includes a partition plate 41 parallel to the side surface 16a of the module body 16, and the partition plate 41 allows the front side (paper surface side in FIG. 4) storage region and the back side storage region. Are formed, and one extra connection length of the outside-side tape core wire 11 is stored in each storage area. In addition, the outside optical code storage unit 29 has an opening 42 (see FIG. 6) that opens to the rear side in each surplus length storage area, and the front side end of each surplus length storage area An R guide 43 for securing a minimum bending radius of the outer tape core wire 11 is formed.
[0031]
Since the outside optical code storage 29 is provided in the module main body 16 in this way, it is not necessary to attach a member such as an extra storage box to each step of the frame 3. For this reason, there are no problems such as the entanglement of the outer-side tape core wires 11 as in the case where the connection extra lengths of the plurality of the outer-side tape core wires 11 are collectively stored in an extra-length storage box or the like. In this case, not only the structure of the frame 3 is simplified, but more optical branch modules 8 can be provided if the frame 3 can be downsized or if the size of the frame 3 is not changed. Can be stored.
[0032]
Two sets of connector holding members 44 are provided on the rear surface of the module body 16. The connector holding member 44 holds the optical connector 20a attached to the tip of the outside-side tape core wire 11 and the optical connector 20b attached to the tip of the connecting tape core wire in a connected state. As shown in FIGS. 4 and 6, the two sets of connector holding members 44 are shifted in height at portions corresponding to the front-side surplus length storage area and the back-side surplus length storage area of the connecting optical cord storage portion 28. Are arranged.
[0033]
Each connector holding member 44 has a main body frame 45 fixed to the rear surface of the module main body 16. A U-shaped upper hook portion 46 for holding the connecting tape core wire 12 is attached to the upper end portion of the main body frame 45, and the optical connector 20 a in a connected state is held at the lower end portion of the main body frame 45. An L-shaped lower hook portion 47 is attached. The lower hook portion 47 has a notch 47a for allowing the outside-side tape core wire 11 to pass through at the center, and has a claw portion 47b protruding upward. And the optical connector 20a is accommodated and hold | maintained in the area | region R (refer FIG. 7) between the main body frame 45 and the nail | claw part 47b. At this time, the optical connectors 20a and 20b are restricted from moving in the front-rear direction by the claw portions 47b.
[0034]
The upper end portion of the rear surface of the module body 16 has a curved surface 48, and a guide groove 48a extending in a curved shape in the vertical direction is formed on the curved surface 48. Then, the two test tape core wires 13 held by the optical component storage unit 27 are guided to the guide groove 48 a through the connection optical cord storage unit 28. The two test tape cores 13 inserted into the guide groove 48 a are pressed by the pressing member 49 at the lower end of the curved surface 48. Thereby, the test tape core wire 13 is guided downward in a state where the minimum bending radius is ensured, and is drawn in a position lower than the height position of the fiber selector 14 while ensuring the minimum bending radius. Thus, it becomes possible to connect to the fiber selector 14. Note that the two connecting tape core wires 12 are configured to pass through both sides of the guide groove 48 a in the curved surface 48, and do not interfere with the test tape core wire 13.
[0035]
In the optical branching module 8 as described above, the connecting tape core wire 12 is taken out of the module main body 16 and connected to the outside-side tape core wire 11, and the connecting tape core wire 12 is inserted into the module main body 16. Since the connection surplus length of the connecting tape core 12 is stored so that it can be pushed in and pulled out, the surplus length of the connecting tape core wire 12 becomes unnecessary. For this reason, the dimension of the connecting optical cord storage portion 28 can be reduced by that amount. In this case, it is possible to reduce the size of the entire optical branching module 8 and increase the space of the outside optical code storage unit 29.
[0036]
In the optical termination 1 in which the optical branching module 8 configured as described above is accommodated, when connecting the connecting tape core wire 12 extending from the optical branching module 8 and the outside-side tape core wire 11, first, On the back side of the termination rack 1, the connecting tape core wire 12 is pulled out from the optical branching module 8. At this time, in the connecting optical cord storage section 28, as shown in FIG. 5 (b), there is no slack in the connecting tape core wire 12, and the connecting tape core wire 12 becomes the inner bending radius regulating member 35. Come along. Thereby, it is possible to obtain a desired drawing length while securing the minimum bending radius of the connecting tape core wire 12.
[0037]
Subsequently, the optical connector 20a at the tip of the outside-side tape core wire 11 and the optical connector 20b at the tip of the connecting tape core wire 12 are connected, and the optical connectors 20a and 20b are fixed by a fixing clip 50 (see FIG. 7). . The fixing clip 50 may be sandwiched from the connector holding member 44 side or from the opposite side of the connector holding member 44 as shown in FIG. Then, the connecting tape core wire 12 is hooked on the upper hook portion 46 of the connector holding member 44 from the side, and then the local outer tape core wire 11 is put into the notch 47a of the lower hook portion 47, and the main body frame 45 and the claw portion The optical connectors 20a and 20b in the connected state are dropped into the region R between 47b. At this time, since the optical connectors 20a and 20b are restrained in the front-rear direction by the claw portions 47b of the lower hook portion 47, the optical connectors 20a and 20b are securely held (see FIG. 7A).
[0038]
Further, since such a connector holding member 44 is provided on the rear surface of the module main body 16 so that the height position is shifted, even if the dimension in the thickness direction of the module main body 16 is small to some extent, the adjacent optical connectors 20a and 20b are arranged. And the possibility of touching the optical connector of the adjacent optical branching module 8 is small. Therefore, it is possible to prevent the transmission signal of other live lines from being affected.
[0039]
When the optical connectors 20a and 20b are removed from the region R between the main body frame 45 and the claw portion 47b, the optical connectors 20a and 20b are slightly above the claw portion 47 as shown in FIG. It can be easily removed by lifting and shifting to the side.
[0040]
Thereafter, the extra connection length of the outside-side tape core wire 11 is pushed into the outside-side optical cord storage part 29 in the module body 16 from the opening 42 on the rear surface of the module body 16. At this time, the extra connection length of the outer-side tape core wire 11 is such that the minimum bending radius is secured by the R guide 43 provided in the outer-side optical cord storage portion 29 and the bending rigidity of the outer-side tape core wire 11. Stored.
[0041]
Subsequently, the connection extra length of the connecting tape core wire 12 is pushed into the connecting optical cord storage portion 28 in the module body 16. As a result, as shown in FIG. 5A, the connection extra length of the connecting tape core wire 12 sags in a region between the inner bending radius regulating member 35 and the outer bending radius regulating member 36, and a minimum bending radius is secured. It will be stored in the state which was done.
[0042]
As described above, according to the present embodiment, the connecting operation between the connecting tape core 12 and the outside-side tape core 11 is performed while the optical branch module 8 is stored in the module storage frame 9 of the optical termination 1. be able to. Therefore, the number of man-hours can be greatly reduced as compared with the conventional case, and workability at the time of connection is improved.
[0043]
In addition, this invention is not limited to the said embodiment. For example, in the above-described embodiment, the optical branching module has been described as an optical connection module that can cope with an optical communication network that requires an optical line testing function. However, the optical connection module according to the present invention is such an optical branching module. The present invention is not limited to this, and can be applied to an optical communication network that does not require an optical test function.
[0044]
【The invention's effect】
  According to the present invention, the module bodyOne end outer surfaceIn addition, optical cable for connection and outside lightcodeConnect the optical connectorWith the module body housed in an optical terminationIn addition to providing a connector holding member that is detachably held, the connecting optical cord storage section in the module body is pushed and pulled out with the connection optical cord connecting length remaining in the state where the minimum bending radius of the connecting optical cord is secured. Since the optical connection module can be stored freely, the connection work between the outside-side optical cord and the connecting optical cord can be performed while the optical connection module is stored in the optical termination. Thereby, workability when connecting the connecting optical cord and the outside optical cord is improved.
[Brief description of the drawings]
FIG. 1 is a front view showing an optical termination frame that houses a plurality of optical branching modules that are one embodiment of an optical connection module according to the present invention.
FIG. 2 is a side view showing a state where the optical branching module shown in FIG. 1 is housed in a module housing frame of a frame.
3 is a diagram showing an upper front portion of the module main body shown in FIG. 2;
4 is a diagram showing an internal configuration of the optical branching module shown in FIG. 2;
5 shows a state in which the connection extra length of the connection optical cord shown in FIG. 4 is stored in the connection optical cord storage unit, and a state in which the connection extra length of the connection optical cord is pulled out from the connection optical cord storage unit. FIG.
6 is a view showing a rear surface of the module main body shown in FIG. 2;
7 is a diagram showing a state in which the optical connector shown in FIG. 2 is held by a connector holding member and a state in which the optical connector is detached from the connector holding member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Optical termination frame, 7 ... Inner side optical cord, 8 ... Optical branching module (optical connection module), 11 ... Outer side optical cord (outside tape core wire), 12 ... Connection optical cord (connecting tape core) Wire), 13 ... optical cord for testing (core tape for testing), 16 ... module main body, 16a ... side, 20, 20a, 20b ... optical connector, 27 ... optical component housing, 28 ... optical cord housing for connection , 29 ... Outside optical cord storage part, 30 ... Optical coupler part, 34 ... Partition plate, 35 ... Inner bending radius restriction member (first bending radius restriction member), 36 ... Outer bending radius restriction member (second bending) Radius regulating member), 38 ... guide groove, 39 ... guide hole, 44 ... connector holding member, 46 ... upper hook part (first hook part), 47 ... lower hook part (second hook part), 48a ... Guide groove, 49 ... holding member.

Claims (6)

In the optical connection module that is housed in the optical termination and connects the office inner optical cord and the office outer optical cord,
A module main body having a connecting optical cord storage portion for storing a connection extra length of the connecting optical cord connected to the station inner optical cord;
An optical connector provided on an outer surface of one end of the module main body and connecting the connection optical cord led out from the connection optical cord storage portion and the outside optical cord, and the module main body includes the optical termination. A connector holding member that is detachably held in a state of being accommodated in
The connection optical cord storage portion is arranged in parallel with the side surface of the module body, and forms a two extra length storage area for storing the connection extra length of the connection optical cord, and the partition plate A guide groove for guiding the connection optical cord, and formed on the partition plate so as to be continuous with the guide groove, and the connection optical cord is connected to the other surface side of the partition plate. And a guide hole for guiding the connection, and in a state in which a minimum bending radius of the connection optical cord is secured, the connection extra length of the connection optical cord is configured to be pushed and retracted ,
The connector holding members have two sets, and these connector holding members are provided at different positions corresponding to the extra length storage areas on the one end side outer surface of the module main body. An optical connection module.   The connecting optical cord storage portion is provided around a first bending radius restricting member that restricts a bending radius of the connecting optical cord to be equal to or greater than the minimum bending radius, and A second bend radius restricting member for restricting a bend radius of the connecting optical cord to be equal to or greater than the minimum bend radius, and a region between the first bend radius restricting member and the second bend radius restricting member The optical connection module according to claim 1, wherein the connection extra length of the connection optical cord is wound and stored.   3. The optical connection module according to claim 1, wherein the module main body includes an outside optical cord storage portion that stores a connection extra length of the outside optical cord. 4. The connector holding member is disposed under the first hook portion for holding the connection optical cord and the second hook portion, and holds the optical connector so as to restrain the optical connector in the front-rear direction. optical connection module of any one of claims 1-3, characterized in that it comprises a hook portion. The module main body has an optical component storage portion for storing an optical component including an optical coupler portion connected to the connection optical cord,
Optical connection module of any one of claims 1 to 4 to the optical coupler portion, characterized in that light encoding test is branched. The upper end of the outer surface on one end side of the module body is formed with a guide groove extending in a vertical direction for guiding the test optical cord downward so as to secure the minimum bending radius of the test optical cord. Has a curved surface,
6. The optical connection module according to claim 5 , wherein a pressing member for pressing the test optical cord inserted into the guide groove is provided at a lower end portion of the curved surface.

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