JP3378464B2 - Optical wiring storage box for optical switch - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical wiring containing box for an optical switch, which is used to accommodate a large number of tape fibers extending from an optical switch.

[0002]

2. Description of the Related Art As an example of a conventional optical switch,
It is disclosed in Japanese Patent Laid-Open No. 7-72398. This optical switch includes a large number of first optical fibers fixed to a V groove of an optical fiber aligning member, a second optical fiber fixed to a movable head, a movable head in the alignment direction of the first optical fiber, and a second optical fiber. A driving mechanism for moving the ends of the two optical fibers toward the optical fiber aligning member is provided, and the desired first optical fiber and the second optical fiber are selectively optically coupled by this driving mechanism. . In addition, a four-fiber tape fiber is formed by bundling four first optical fibers, and the first optical fibers are arranged in the optical fiber alignment member in the state of the tape fibers. Furthermore,
The optical switch has a case for preventing dust and the like from entering from the outside to affect optical coupling, and the first and second optical fibers and the drive mechanism are enclosed in the sealed case. Also, considering the workability of connection with external wiring, each first
By exposing the optical fiber from the case and providing a connector at the tip of each first optical fiber, connection between the external wiring and the first optical fiber is facilitated.

[0003]

However, the first optical fiber fixed to the optical fiber aligning member is simply pulled out from the sealed case of the optical switch, and in consideration of the connection workability with the external wiring, there is a relatively large margin. Has been pulled out. Since such a first optical fiber only hangs down from the case, the first optical fibers (tape fibers) are randomly entangled with each other outside the case, and a desired connector is searched for when connecting external wiring and an arbitrary connector. However, it took some time.

The present invention has been made to solve the above problems, and particularly provides an optical wiring accommodating box for an optical switch, which facilitates connection between a tape fiber extending from the optical switch and external wiring. With the goal.

[0005]

According to a first aspect of the present invention, there is provided an optical wiring housing box for an optical switch, wherein a plurality of tape fibers extending from the optical switch are housed in a housing for an extra length and a fiber outlet of the housing. An optical wiring storage box in which the connector of each tape fiber is exposed from
An extra length storage tray fixed inside the housing, a moving block fixed near the tip of the tape fiber laid on the extra length storage tray, and a fiber discharge side end of the upper surface of the extra length storage tray And a pair of left and right guide portions that extend along the moving direction of the moving block and guide the moving block from both sides.

[0006] In this optical wiring accommodating box for optical switches, when arranging the tape fibers extending from the optical switch on the extra length accommodating tray, the tape fibers are arranged on the extra length accommodating tray so as to have a margin. At this time, the moving block is fixed near the tip of the tape fiber, and the moving block is guided by being sandwiched between the guide portions fixed to the extra length storage tray, so that the moving block can be reliably advanced and retracted along the guide portion. Can be made. In this way, the moving block reliably moves within the predetermined route while extending in the extending direction of the guide portion. Therefore, when an operator picks up an arbitrary connector that has come out of the housing and pulls this connector, the tape fiber is reliably pulled out from the housing for an arbitrary length, and this connector is connected to the external wiring connector. Easier to do. Further, after the connection work between the connectors is completed, the tape fiber can be surely returned to the original position by pushing the connector back toward the housing. Such an operation allows the tape fiber to be reliably moved by the cooperation of the moving block and the guide portion, in conjunction with the fact that the tape fiber is laid around the tray for storing the excess length with a margin. Due to Further, since the connector exposed from the housing is pulled out when it is connected to or disconnected from the external wiring, it is possible to keep the length of the tape fiber exposed from the housing to a necessary minimum in normal times. It is difficult to entangle tape fibers with each other outside the housing.

In this case, it is preferable that the housing is provided with a stopper portion that abuts the moving block at a position facing the front end of the guide portion. When such a configuration is adopted, the moving block comes into contact with the stopper portion when the tape fiber is sufficiently pulled out from the housing. Therefore, the tape fiber is not pulled out from the housing more than necessary, the tape fiber is prevented from being pulled out too much by the carelessness of the operator, and the rupture of the core wire of the tape fiber can be appropriately avoided.

Further, it is preferable that the extra length accommodating trays are multi-tiered and a plurality of tape fibers are dispersed according to the number of stages of the extra length accommodating trays. Such a configuration is adopted when the number of tape fibers is extremely large, and reliably prevents the entanglement of the tape fibers caused by the congestion of the tape fibers on the extra length accommodation tray, and provides a margin on the extra length accommodation tray. Will be born. Then, by stacking the extra length storage trays, it becomes easy to cope with the number of tape fibers.

Further, it is preferable to dispose a height regulating block between each extra length accommodating tray. When such a configuration is adopted, a constant gap can be always created between the extra length storage trays by the height of the height regulation block, and a height space in which the moving block can be moved is easily and reliably created. be able to. And the assembling workability at the time of making the extra length accommodation tray multistage improves.

Further, a plurality of block-shaped fiber fixing members are arranged in a line at the fiber introduction side end of the extra length accommodating tray, and the pin inserting holes provided in each fiber fixing member protrude from the extra length accommodating tray. It is preferable to fit the positioning pins and sandwich a predetermined number of tape fibers in a standing state between the fiber fixing members. When such a structure is adopted, the positioning of the fiber fixing member can be achieved only by fitting the positioning pin into the pin insertion hole of the fiber fixing member. When the fiber fixing member is adhesively fixed to the extra length accommodation tray, the fiber fixing member will not be displaced even if the adhesive surface is peeled off for some reason, and the fiber introduction side of the extra length accommodation tray It is possible to always have a plurality of fiber fixing members in a line at the end.

Further, it is preferable that a plurality of fiber alignment pins are erected on the extra length storage tray at positions where the tape fibers are laid along the corrugation, and the tape fibers are laid up along the fiber alignment pins in a standing state. As described above, by deforming the tape fiber on the extra length storage tray so as to fit the fiber alignment pin in the upright state, the waveform of the tape fiber can be easily created. This waveform not only secures a radius of curvature of 30 mm, which is a problem in quality control of the tape fiber, but also makes it possible to increase the extra length of the tape fiber.

Further, it is preferable that the optical switch is housed in the housing and the extra length storage tray is arranged above the optical switch. If such a configuration is adopted, the inconvenience of separating the optical switch and the optical wiring housing box from each other,
For example, it is possible to eliminate inconvenience during transportation and installation work.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of an optical wiring accommodating box for an optical switch according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing the outer appearance of an optical wiring accommodating box for an optical switch according to this embodiment, and FIG.
It is a perspective view which shows the internal structure of an optical wiring storage box. The optical wiring housing box 1 shown in these drawings has a housing 2, and an optical switch 3 is arranged at the bottom of the internal space of the housing 2. Further, two extra-length accommodating trays 4 and 5 are arranged above the optical switch 3 in a stacked state, and the housing 2 has a flat plate-shaped lid 6 used to store these members 3 to 5.

This optical switch 3, as shown in FIG.
It has a rectangular parallelepiped housing 7, and a plurality of (for example, 1
00 tape fibers 8 are exposed. Since each tape fiber 8 is formed as a four-core tape fiber 8 by bundling four first optical fibers 9, a plurality of tape fibers 8 are formed from the housing 7 in a state where the first optical fibers 9 are bundled ( (E.g. 400) will be discharged. In addition, the first optical fiber 9 exposed from the tip of each tape fiber 8
Are arranged side by side in the two-divided optical fiber alignment member 10 housed in the sealed case 11. Then, 200 first optical fibers 9 are bonded and fixed to the left first optical fiber alignment member 10a, and 200 first optical fibers 9 are bonded and fixed to the right second optical fiber alignment member 10b. Has been done.

A head base 12 which moves along the extending direction of the optical fiber alignment member 10 is arranged in the sealed case 11, and a movable arm 14 is fixed to the head base 12. Further, a two-core master-side optical fiber (second optical fiber) 13 is fixed to the tip of this movable arm 14, and the tip of the master-side optical fiber 13 is aligned with the optical fibers by operating the movable arm 14. It comes into contact with the member 10.

As shown in FIG. 4, the optical fiber array member 1
On the surface of 0, a predetermined number of V grooves 15 extending linearly in the optical fiber coupling direction are formed. One side of each V groove 15 is used as a first optical fiber fixing groove 15a for fixing the 400-fiber first optical fiber 9 with an adhesive, and the other side of each V groove 15 is fixed to the movable arm 14. It is used as a second optical fiber introduction groove 15b for introducing the master side optical fiber 13 thus formed. Then, by decreasing the pitch of the V grooves 15, the 400-fiber first optical fibers 9 can be arranged on the optical fiber arrangement member 10 in the X direction.

As shown in FIG. 3, the first of 400 cores is used.
A plurality of (100) tape fibers 8 composed of the optical fibers 9 are led out of the sealed case 11 through a through hole 11a provided in the sealed case 11, and the housing 7 is also provided.
Are led out to the outside through the tape fiber pull-out portion 16 provided in the. Further, the master-side optical fiber 13 is led out to the outside of the hermetically sealed case 11 through a through hole 11b provided in the hermetically sealed case 11, and is also led out to the outside through a master side optical fiber lead-out portion 17 provided in the housing 7. . The through holes 11a and 11b have the first
After inserting the optical fiber 9 and the master-side optical fiber 13, they are sealed in a liquid-tight state or sealed with an adhesive.

Further, inside the housing 7, there is provided a coupling position selecting mechanism 21 for driving the head base 12 in the arrangement direction (X direction) of the first optical fibers 9. The coupling position selection mechanism 21 includes a screw shaft 22 extending in the arrangement direction (X direction) in the sealed case 11 accommodating the head base 12 and the optical fiber arrangement member 10, and the head base 12.
A female thread portion 23 provided on the
A motor 24 having an encoder 24a as a drive source for driving the screw shaft 22 and a bearing 25 fixed to the sealed case 11 to support the screw shaft 22 are provided. By placing the motor 24 outside the sealed case 11, the motor 24 is not affected by the light reflection preventing agent (for example, silicone oil) enclosed in the sealed case 11, and the motor 24 needs to be oil-sealed. Disappears. Reference numeral 26 is a control unit that controls the rotation of the motor 24. Further, in the sealed case 11, guide means (not shown) for guiding the head base 12 in the X direction.
Is provided.

Next, the movable arm 14 and the movable arm drive mechanism 31 described above will be described. As shown in FIGS. 4 to 6, the movable arm 14 is composed of a plate-shaped first movable arm 32 located above and having springiness, and a second movable arm 33 located below and having springiness. It is configured. The base end of the first movable arm 32 is the head base 1
The upper end surface 34a of the mounting base 34 fixed to 2 is fixed with screws or the like, and the base end of the second movable arm 33 is fixed to the lower surface 34b of the mounting base 34 with screws or the like.

Further, a spring portion 33a made of one spring plate is provided at the center of the second movable arm 33, and this spring portion 33a urges the second movable arm 33 downward in a steady state. , The master side optical fiber 13 is V
In order to correct the positional deviation when it is introduced into the groove 15, a lateral displacement is possible. Further, the second movable arm 3
A block-shaped movable head 33b is fixed to the tip of the movable head 33b, and a two-core master side optical fiber 13 is obliquely downward (the optical fiber array member 10) on the lower surface of the movable head 33b.
It is fixed toward the V groove 15). The first movable arm 32 is also formed of a spring plate and is urged downward in a steady state.

A movable arm drive mechanism 31 is provided adjacent to the side of the movable arm 14 described above. The movable arm drive mechanism 31 includes an electromagnetic solenoid 35 fixed to a mounting base 34, an L-shaped swing portion 36 that swings by pressing a plunger 35a of the solenoid 35, and a mounting base located above the plunger 35a. A support shaft 37 that is fixed to the shaft 34 and extends in the X direction to rotatably support the swing portion 36, and a free end of the swing portion 36 rearward (arrow E direction).
The coil spring 38 that is urged to extend between the mounting base 34 and the swing portion 36 and extends in the X direction from the upper portion of the inner side surface of the swing portion 36, and the first movable arm 32 and the second movable arm 33. And the first movable arm 32
The first actuation bar 39 that lifts the first movable bar 3 and the second movable arm 3 that extends in the X direction from the lower portion of the inner surface of the swing portion 36.
And a second operation bar 40 which is disposed below the third movable arm 33 and lifts the second movable arm 33.

Therefore, as shown in FIG. 6, the movable arm 1
4 is in a steady state (a so-called V contact state in which the master side optical fiber 13 is introduced into the V groove 15 of the optical fiber array member 10), the plunger 35a retracts and the swing portion 36 moves.
Is rotated in the direction of arrow E by the urging force of the coil spring 38 to engage the first movable arm 32 and the first operating bar 39 and
The engagement between the movable arm 33 and the second operation bar 40 is released. As a result, the tip of the second movable arm 33 is pressed by the tip of the first movable arm 32, so that the master-side optical fiber 13 is in V contact with the optical fiber array member 10.

When the movable arm 14 is moved in the arrangement direction (X direction) of the first optical fibers 9 in order to switch the optical connection, the V-contact state of the master side optical fiber 13 is changed as shown in FIG. Plunger 35 because it needs to be solved
a is moved forward, and the swing portion 36 is moved by the plunger 35a.
While pressing, the swing portion 36 is rotated about the support shaft 37 in the arrow F direction. As a result, the first operating bar 39 pushes up the first movable arm 32, and the second operating bar 40 pushes up the second movable arm 32.
While pushing up the movable arm 33, the V-contact state of the master side optical fiber 13 is released.

As shown in FIG. 4, the movable arm drive mechanism 31 is provided with a sensor section 41 for detecting the displacement of the movable arm 14. The sensor unit 41 includes an optical sensor 42 fixed to the lower surface 34b of the mount 34,
The optical sensor 42 is fixed to the tip of the first operation bar 39.
It is composed of a light-shielding plate 43 which goes in and out. Therefore, when the light shielding plate 43 shields the optical sensor 42 by the swing of the swing portion 36, as shown in FIG. 6, the second movable arm 33 is lowered and the master side optical fiber 13 is moved to the optical fiber array member. It is determined that the V groove 15 of 10 is in V contact. Further, when the light blocking of the optical sensor 42 is released, as shown in FIG. 6, the second movable arm 33 is raised and the master side optical fiber 13 is moved to the optical fiber array member 1.
It is determined that the V groove 15 of 0 is not in V contact.

The optical switch 3 constructed as described above is arranged in the housing 2 as shown in FIG.
The large number (100) of tape fibers 8 ejected from the optical switch 3 are distributed to the lower surplus length storage tray 4 and the upper surplus length storage tray 5 by 50. In this case, 50 tape fibers 8 fixed to the first optical fiber alignment member 10a are introduced into the extra length accommodation tray 4 on the lower side, and the second optical fibers are introduced into the extra length accommodation tray 5 on the upper side. Fifty tape fibers 8 fixed to the fiber alignment member 10b are introduced. And each extra length storage tray 4, 5
Are fixed to the inner wall surface of the housing 2 so as to be laminated at a predetermined interval by appropriate screw fastening.

Here, as shown in FIGS. 8 and 9, a block-shaped fiber fixing member 50 made of silicone rubber is provided at the fiber introduction side end 4a of the upper surface of the lower extra length accommodation tray 4. Plural are arranged. The fiber fixing members 50 are arranged in a line with the same pitch in a state of being fixed to the upper surface of the extra length accommodation tray 4 with an adhesive. In addition, a gap is provided between the fiber fixing members 50 so that two to four tape fibers 8 can be sandwiched in a standing state. Further, each fiber fixing member 50 is fixed so as to be stuck to the positioning pin 51 protruding from the upper surface of the extra length accommodating tray 4.

Specifically, a cylindrical pin insertion hole 50a is formed in the center of the fiber fixing member 50, and a positioning pin 51 is fitted into this pin insertion hole 50a, so that the fiber fixing member 50 is displaced. To prevent. Therefore, even if the adhesive surface of the fiber fixing member 50 is peeled off for some reason, the fiber fixing member 50 will not be displaced by the positioning pin 51, and the fiber introduction side end portion 4a of the extra length accommodating tray 4 will be prevented. , The plurality of fiber fixing members 50 are always held in a line. Further, by using silicon rubber for the fiber fixing member 50, the tape fiber 8 can be easily inserted between the fiber fixing members 50, and the workability of assembling the tape fiber 8 can be improved.

As shown in FIGS. 8 and 10, a connector 52 is provided at the tip of each tape fiber 8 laid out in a waveform on the extra length storage tray 4, and each connector 52 is connected to an external wiring (not shown). It is connected to the connector.
In the middle of the tape fiber 8, the connector 52
A rectangular parallelepiped moving block 53 is fixed at a position in the vicinity of with an adhesive, and two tape fibers 8 are bundled by each moving block 53. As shown in FIGS. 11 and 12, the moving block 53 has a through hole 54 therein, and after the two tape fibers 8 are inserted into the through hole 54, an adhesive is poured into the through hole 54. By this, moving block 5
3 can be fixed in place on the tape fiber 8. Further, a funnel portion 54a having a divergent shape is provided on one end side of the through hole 54. Such a funnel portion 54
The a makes it easier for the tape fiber 8 to pass through the through hole 54 and also makes it easier to pour the adhesive.

As shown in FIGS. 8 and 13, a guide portion 5 for guiding each moving block 53 is provided at the fiber discharge side end portion 4b on the upper surface of the extra length storage tray 4.
A plurality of 5 are arranged. Each guide portion 55 is formed as a pair of left and right elongated guide pieces 55A and 55B, and guides the moving block 53 so as to sandwich it from both sides. Therefore, the moving block 53 can be slid along the extending direction of the guide portion 55. The guide portions 55 are arranged in a line on the fiber discharge side end portion 4b of the extra length accommodation tray 4.

As shown in FIG. 14, the extra length storage tray 4
Has a metal tape guide plate 56 made of a thin plate,
The tape guide plate 56 includes the guide pieces 55A and 55 described above.
B is created. In producing each guide portion 55, first, a thin plate is pressed to form a U-shaped cutting portion 57 in a mirror-symmetrical shape, and then the cutting portion 5 is formed.
By bending the part surrounded by 7 in the same direction,
Two parallel guide pieces 55A and 55B are formed. The moving block 5 is provided between the guide pieces 55A and 55B.
3 are formed at intervals such that they can slide.

Further, as shown in FIGS. 15 and 16, a height control block 58 made of aluminum and having a rectangular parallelepiped shape is arranged between the guide portions 55, and the lower excess length accommodation tray 4 and the upper excess tray are accommodated. By sandwiching the height regulation block 58 with the long accommodation tray 5, the interval between the lower excess length accommodation tray 4 and the upper excess length accommodation tray 5 is always kept constant.
That is, a constant gap can always be created between the extra length storage trays 4 and 5 by the height of the height regulation block 58, and a height space in which the moving block 53 can move is easily and reliably created. Then, each height regulation block 58 is fixed to the extra length accommodation tray 4 by a screw, and at this time, by sandwiching the plate-shaped tape guide plate 56 between the height regulation block 58 and the extra length accommodation tray 4,
The fixing of the tape guide plate 56 is achieved.

As described above, even when the moving block 53 is sandwiched between the extra length storage trays 4 and 5, the moving block 53 can surely slide along the guide pieces 55A and 55B. Therefore, the operator grips the connector 52 and pulls the connector 52, so that the tape fiber 8
Will be reliably drawn for any length. Also, by pushing back the connector 52, the tape fiber 8
Can be reliably pushed back to its original position. In addition,
Such a height regulation block 58 includes guide pieces 55A,
This is a component adopted when it is difficult to control the height of 55B, and the moving block 53 is formed by the guide pieces 55A and 55B.
It may not be adopted when the sliding of the above is ensured.

Further, as shown in FIGS. 16 and 17, a stopper portion 59 is provided on the moving path of the moving block 53 so that the tape fiber 8 is not pulled out of the housing 2 more than necessary. The stopper portion 59 is provided at a position facing the front end of the guide portion 55, and the guide piece 55 is provided.
It is placed in the part that is sandwiched between A and the guide piece 55B,
Guide pieces 55A, 5 from the lower surface of the upper excess length storage tray 5
It hangs down between 5B and protrudes to a position where it abuts on the moving block 53. Therefore, the connector 52
When the tape is pulled out sufficiently, the moving block 53 hits the stopper portion 59, whereby it is possible to appropriately prevent the tape fiber 8 from being excessively pulled out due to the carelessness of the operator.
The breakage of the core wire of the tape fiber 8 is appropriately avoided. Although each stopper portion 59 is individually provided corresponding to each moving block 53, the stopper portion 59 may be formed in an elongated rod shape and integrally formed so as to correspond to all the moving blocks 53. Good.

Here, as shown in FIG. 8, the fiber fixing member 50 and the guide portion 55 are diagonally arranged on the substantially rectangular extra length storage tray 4, and the fiber fixing member 5 is arranged.
The tape fiber 8 between 0 and the moving block 53 is formed in a corrugated shape. In order to ensure this waveform, a plurality of fiber alignment pins 60 are provided upright on the upper surface of the extra length accommodation tray 4 in correspondence with the position where the tape fiber 8 is wound around the waveform. Also, on the extra length storage tray 4,
The tape fiber 8 is along the fiber alignment pin 60,
Crawling is performed while maintaining the standing state (that is, the "vertically placed state"), and a radius of curvature of 30 mm, which is a problem in quality control of the tape fiber 8, is secured. Then, by placing the tape fiber 8 vertically, the contact area of the tape fiber 8 with respect to the extra length storage tray 4 becomes small,
Not only can a large number of tape fibers 8 be regularly arranged on the extra length storage tray 4, but the extra length of the tape fibers 8 can be made long. It should be noted that the arrangement relationship of the fiber alignment pins 60 is arbitrary as long as the tape fiber 8 can be formed in a wavy shape in a vertically placed state.

Although the tape fiber 8 is forced to stand on the extra length storage tray 4, the tape fiber 8 is laid between the moving block 53 and the connector 52 ( That is, the tape fiber 8 is twisted by 90 degrees in the vicinity of the moving block 53, as shown in FIG.

As shown in FIGS. 1 and 17, the connector 5
2 needs to be exposed from the housing 2 in consideration of connection with external wiring. Therefore, a plurality of fiber outlets 61 aligned in a straight line are formed on the front surface of the housing 2, and each fiber outlet 61 is formed at a position facing each guide portion 55. Further, just below the fiber outlet 61, an inclined connector mounting surface 62 for mounting the respective connectors 52 is provided, and the connector mounting surface 62 projects the front surface of the housing 2 forward. Produced. Therefore, by mounting the connector 52 on the connector mounting surface 62, the bracing of the connector 52 is appropriately prevented.

Next, when the number of the tape fibers 8 accommodated in the housing 2 is extremely large, the tape fibers 8 are crowded on the lower excess length accommodation tray 4, and the tape fibers 8 are entangled with each other. There is fear. Therefore,
Another surplus length storage tray 5 is provided above the lower surplus length storage tray 4.
To provide.

As shown in FIG. 19, the upper surplus length storage tray 5 has substantially the same structure as the lower surplus length storage tray 4. Therefore, the same reference numerals are used in the drawings to show the structure. I will keep the explanation simple. The upper surplus length storage tray 5 is different from the lower surplus length storage tray 4 (see FIG. 8) in that when positioning the fiber fixing member 50 to one side of the fiber introduction side end 5a, this position is It faces the position of the fiber fixing member 50 (see FIG. 8) arranged on the fiber introduction side end 4a. That is, in the extra length accommodation tray 4 on the lower side, the fiber fixing members 50 are arranged on the left side of the paper surface of FIG. 8, and in the extra length accommodation tray 5 on the upper side, the fiber fixing members 50 are arranged on the right side of the paper surface of FIG. It is lined up.

Similarly, when positioning the guide portion 55 on one side of the fiber discharge side end portion 5b, this position is located at the guide portion 55 arranged on the fiber discharge side end portion 5b.
(See FIG. 8). That is, in the extra length accommodation tray 4 on the lower side, the guide portions 55 are arranged on the right side of the paper surface of FIG. 8, and in the extra length accommodation tray 5 on the upper side,
The guide portion 55 is arranged on the left side of the paper surface of FIG.
By doing so, as shown in FIG. 1, the fiber outlets 61 can be arranged in a line, and at the same time, the 100 tape fibers 8 from the housing 7 of the optical switch 3 can be replaced by 5 fibers.
It is possible to accurately distribute 0 lines to each side (see Fig. 2). Further, as shown in FIG. 16, the height regulation block 58 is arranged between the upper surplus length storage tray 5 and the lid 6, so that the movement block 53 slides on the surplus length storage tray 5. Reserved.

As described above, the tape fibers 8 coming out of the optical switch 1 are arranged in a corrugated shape while maintaining the state of being erected on the extra length storage trays 4 and 5, so that a tape fiber 8 is produced. It becomes an extra length of 8. Therefore, when an operator picks up the arbitrary connector 52 discharged from the fiber outlet 61 of the housing 2 and pulls the connector 52, the tape fiber 8 is pulled out by the amount that the moving block 53 can move. By such a drawing operation, the connector 52 and a connector for external wiring (not shown)
The connection work with can be performed reliably.

After the connector 52 and the connector for external wiring are connected or disconnected, the connector 52 is pushed back toward the housing 2 to return the connector 52 to its original position. As described above, the connector 52 is pulled out when the connection work with the connector of the external wiring is necessary or when the work of disconnecting from the connector of the external wiring is performed. It becomes difficult for the entanglement of 8 to occur.

The present invention is not limited to the above-described embodiment, and the number of trays of the extra length accommodating tray is arbitrary depending on the number of tape fibers 8. Further, the optical switch 3 and the optical wiring housing box can be separated from each other. By storing the optical switch 3 in the optical wiring housing box 1, the inconvenience of separating the optical switch 3 is eliminated.
In addition, such an optical wiring housing box 1 is used as a single item, or a conventional optical branch module housing rack (so-called FTM (Fiber Termination Module).
It may be installed and used at the bottom of the (dule) rack.

[0044]

The optical wiring storage box for an optical switch according to the present invention is provided with a surplus length storage tray fixed inside the housing and a moving member fixed near the tip of the tape fiber laid on the surplus length storage tray. A block, and a pair of left and right guide portions that are fixed to the fiber discharge side end of the upper surface of the extra length storage tray and that extend along the moving direction of the moving block and guide the moving block from both sides. This facilitates the connection work between the connector provided at the tip of the tape fiber extending from the optical switch and the external wiring connector.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an optical wiring storage box according to the present invention.

FIG. 2 is a perspective view showing an internal structure of an optical wiring housing box.

FIG. 3 is a cross-sectional view showing the internal structure of the optical switch.

FIG. 4 is a perspective view showing a movable arm and a movable arm drive mechanism applied to the optical switch.

5 is a plan view of the movable arm and the movable arm drive mechanism shown in FIG.

FIG. 6 is a side view showing a state in which a master side optical fiber provided on a movable arm is lowered and the optical fiber is brought into V contact with an optical fiber array member.

FIG. 7 is a side view showing a state in which the master side optical fiber is raised and the V contact state is released.

FIG. 8 is a plan view showing a lower excess length storage tray applied to the optical wiring storage box of the present invention.

FIG. 9 is a perspective view showing a fiber fixing member.

FIG. 10 is a perspective view showing a state in which a moving block is fixed to a tape fiber.

FIG. 11 is a sectional view of a moving block.

FIG. 12 is a front view of a moving block.

FIG. 13 is a perspective view showing a state in which a moving block is arranged between guide pieces.

FIG. 14 is a perspective view showing an arrangement state of guide pieces.

FIG. 15 is a perspective view showing a height regulation block.

FIG. 16 is a cross-sectional view showing a state where upper and lower surplus length storage trays of the optical wiring storage box are assembled in the housing.

17 is a sectional view taken along the line AA of FIG.

FIG. 18 is a perspective view showing an arrangement relationship of fiber alignment pins.

FIG. 19 is a plan view showing an upper side extra length storage tray applied to the optical wiring storage box of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Optical wiring accommodation box, 2 ... Housing, 3 ... Optical switch, 4, 5 ... Extra length accommodation tray, 4a, 5a ... Fiber introduction side end part, 4b, 5b ... Fiber discharge side end part, 8 ... Tape fiber, 50 ... Fiber fixing member, 50a ... Pin insertion hole, 51 ... Positioning pin, 53 ... Moving block, 5
5 ... Guide part, 55A, 55B ... Guide piece, 58 ... Height regulation block, 59 ... Stopper part, 60 ... Fiber alignment pin, 61 ... Fiber exit.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuya Ito 1 Taya-cho, Sakae-ku, Yokohama-shi, Kanagawa Sumitomo Electric Industries, Ltd. Yokohama Works (72) Inventor Takashi Ebihara 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo Japan Telegraph and Telephone Corporation (72) Inventor Naoki Nakao 3-19-3 Nishishinjuku, Shinjuku-ku, Tokyo Japan Telegraph and Telephone Corporation (72) Inventor Masato Kuroiwa 3--19 Nishishinjuku, Shinjuku-ku, Tokyo No. 2 Nihon Telegraph and Telephone Corporation (56) Reference JP-A-6-51218 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G02B 6/00 G02B 6/24 G02B 6/36-6/40

Claims (7)

(57) [Claims] 1. An optical wiring accommodation box in which a plurality of tape fibers extending from an optical switch are accommodated in a housing for an extra length, and connectors of the respective tape fibers are exposed from a fiber outlet of the housing, An extra length accommodating tray fixed inside the housing, a moving block fixed near the tip of the tape fiber crawled on the extra length accommodating tray, and a fiber discharge side end of the upper surface of the extra length accommodating tray. An optical wiring accommodating box for an optical switch, comprising: a pair of left and right guide portions that are fixed to a portion, extend along a moving direction of the moving block, and guide the moving block from both sides. 2. The optical wiring accommodating box for an optical switch according to claim 1, wherein the housing is provided with a stopper portion that abuts the moving block at a position facing the front end of the guide portion. 3. The optical wiring for an optical switch according to claim 1, wherein the extra length accommodating trays are multi-tiered and a plurality of the tape fibers are dispersed according to the number of stages of the extra length accommodating trays. Housing box. 4. The optical wiring accommodating box for an optical switch according to claim 3, wherein a height regulation block is arranged between the extra length accommodating trays. 5. A plurality of block-shaped fiber fixing members are arranged side by side in a line at the fiber introduction side end of the extra length accommodating tray, and pin insertion holes provided in each of the fiber fixing members are provided.
The positioning pin projecting from the extra length storage tray is fitted, and a predetermined number of the tape fibers are sandwiched between the fiber fixing members in an upright state. Optical wiring box for optical switches. 6. A plurality of fiber alignment pins are erected on the extra length storage tray at positions where the tape fibers are laid in a wave shape, and the tape fibers are laid up along the fiber alignment pins in a standing state. The optical wiring storage box for an optical switch according to any one of claims 1 to 5, wherein 7. The optical switch according to claim 1, wherein the optical switch is housed in the housing, and the extra length storage tray is arranged above the optical switch. Optical wiring box.