JP3176906B2 - Optical distribution frame - 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 distribution frame for switchably connecting a plurality of cable-side optical fibers on an optical cable side to a terminating optical fiber which can be connected to a connector by an optical connector. is there.

[0002]

2. Description of the Related Art FIG. 12 is a front view showing a conventional optical distribution board. In FIG. 12, reference numeral 1 denotes a box, and a plurality of optical cables 2 are drawn in from above or below. These optical cables 2 include those connected to a transmission device and those connected to an external optical cable. These optical cables 2 are arranged along the side plate 10 of the box 1, fixed at a branch portion 4a under the box 1 by a cable clamp 4b or a tension member clamp 4c, and are drawn out to draw out the optical fiber core 3a. I have. These optical fibers 3
a is drawn into the fusing section tray storage section T1 at the bottom of the box 1,
.. Are stored in a slide unit 12 provided in the fusion part tray storage part T1 in a drawer type fusion part tray 6, which is stacked and stored in multiple stages. In each of the fusion trays 6, 6,..., The optical fiber core wire 3a is connected to one end of the branch-out fan-out cord 3b, which is not branched, via a fusion splicing reinforcement (not shown).

[0003] The fan-out code 3b is pulled out upward through a center tray 9 installed above the fusion part tray storage section T1.
b are introduced from the left side in the drawing into the drawer-type branch connection trays 8, 8,... stacked in multiple stages in the branch connection tray storage portion T2 installed above the center tray 9, It is connected to a jumper cord j (optical cord) introduced into the branch connection tray 8 from the right side via an optical connector (not shown) so as to be switchably connectable. The branch connection trays 8, 8,... Are guided by guide rods 15 projecting from the back plate 11 of the box 1 so that they can be pulled out / stored in the front-rear direction (the depth direction on the paper of FIG. 12). The jumper code j is wired between the two branch connection trays 8, 8, and is connected to the other branched end of the fan-out cord 3 b in the branch connection tray 8, thereby connecting the target optical lines. The extra length of the jumper cord j can be stored in the tray 8 in the branch connection tray storage portion T2, or can be adjusted by using the support 4 (cord clamp) on the side surface of the box 1 so that It is absorbed by bending wiring so that it is folded back. When both ends of the jumper cord j are connected to the fan-out cord 3b in the branch connection tray 8, the optical lines on the transmission device side and the external optical cable side are connected via the jumper cord j. Also, in the branch connection tray 8, the wiring 3d (optical code) introduced into the case 1 from the wiring wiring storage trays 9a and 9b arranged on the upper and lower parts of the case 1, the fan-out code 3b, and the like. May be connected.

[0004]

By the way, in the optical distribution board shown in FIG. 12, the optical line on the transmission device side and the optical line on the external optical cable side are respectively stored from the fusion part tray storage part T1 to the branch connection tray storage part. Since the fan-out cords 3b routed to the section T2 are drawn into the branch connection tray storage section T2 through the same wiring route, the fan-out cords 3b can be distributed to the multiple branch connection trays 8 in an orderly manner. It was a time-consuming task. Further, in order to additionally add the optical cables 2 on the transmission device side and the external line side and to branch connect the optical fibers 3a drawn from these optical cables 2, wiring of the fan-out cord 3b corresponding to each of the added optical cables 2 is required. In addition, it is necessary to carry out this wiring work carefully so as not to affect the fan-out cord 3b wired in advance, and there is a problem that workability is reduced. In order to connect the target optical lines on the transmission device side and the external line side with the jumper code j, first, the branch connection tray 8 containing the target optical line (fan-out code 3b) to be connected is selected, and furthermore, It is necessary to find the corresponding optical fiber (the other end of the fan-out cord 3b) in the branch connection tray 8, and there has been a complaint that it takes time and effort to control the optical line. In addition, it is necessary to pull out and open a plurality of branch connection trays 8 and perform connection work with each branch connection tray 8, which is unsatisfactory in workability. As the number of optical lines connected to each other increases, the above problem becomes more remarkable, and the number of jumper codes j also increases. If the number of the jumper cords j is large, the cost is increased, and the jumper cords j are easily entangled with each other, so that the workability of the switching connection is reduced. Further, even when the number of required cores is small, the use of a large optical distribution board increases the waste of installation space for the optical distribution board, and
Since it is disadvantageous in terms of cost, development of a technology capable of solving this has been required.

The present invention has been made in view of the above-mentioned problems, and (1) an optical fiber wiring in which a cable side optical fiber and a terminal optical fiber connected to each other by a terminal unit are separated from each other. (2) Since the wiring is divided into a section and a terminating optical fiber wiring section, the wiring can be neatly arranged without causing entanglement, and the optical fibers can be easily compared and the connection workability is improved. The processing from the fixing of the optical cable to the termination of the connector of the optical fiber on the cable side can be performed independently by the termination unit. It is an object of the present invention to provide an optical distribution board which can efficiently store and take out optical fibers in the vicinity of a module storage section by using a duct.

[0006]

[Means for Solving the Problems]Optical distribution board according to the present invention
Is the multiple cable side optical fiber on the optical cable side,
Termination terminated by an optical connector to enable connector connection
An optical distribution frame switchably connected to an optical fiber,
A cable fixing portion for fixing the optical recording cable;
Cable-side optical fiber pulled out from the cable terminal
The terminal optical fiber is terminated so as to be connectable to a connector.
Optical module with an optical connector provided on one side
A module capable of storing a plurality of arrays by aligning the directions of the optical connectors.
A termination unit with a module storage section is not provided.
The optical module housed in the module housing
Can be pulled out to the operation side where the optical connector is directed
In the termination unit, the cable fixing portion
From the termination unit to the module
The cable introduced into the target optical module in the housing section
An optical fiber wiring section to which an optical fiber is wired;
Switchable connector connection to the optical connector on the module side
Terminating optical fiber to which the terminated optical fiber is connected
And the wiring section are provided separately from each other.Configuration
AndIt is also possible to provide a plurality of termination units. Termination
Check if the optical cable is fixed by the cable fixing part.
The optical fiber cable on the optical connector of the optical module.
It is possible to perform up to the termination that can be connected to the
Can be installed according to the number of optical cables.
The number is adjusted (however, the number of optical
It does not mean that the number of end units installed is the same.) Termination Uni
The optical fiber wiring section and the termination
By the optical fiber wiring part, the cable side optical fiber and
Both optical fibers are separated from the terminated optical fiber and wired.
There is no fear of entanglement between fibers. Cable side light
Even if you add fiber or termination optical fiber,
By wiring to the wiring section or termination optical fiber wiring section,
It can be easily wired to the module storage section.

[0007] first aspect of the present invention, an optical monitoring unit for optically connecting one or both of the optical lines of the previous SL cable-side optical fiber and the terminated optical fiber relative to the optical pulse tester side optical line, The above-mentioned termination unit can be installed in a desired number. Further, according to the present invention, the number of termination units and the number of optical monitoring units to be installed is appropriately set according to the number of corresponding optical distribution boards,
It is possible to eliminate a waste in which the number of cable fixing sections, module storage sections, and the like is excessive for the number of corresponding cores. Whether to install the optical monitoring unit or the number of the optical monitoring unit is selected as necessary.

[0008] According to a second aspect of the invention, prior Symbol the termination optical fiber duct which is vertically movably supported by said disposed on the operating side vertical movement mechanism of the module housing portion is accommodated, said duct, said When the module storage portion is at the raised position, the termination optical fiber is prevented from protruding toward the operation side by the pressing portion, and when at the lower position from the raised position, the pressing portion is displaced to perform the operation. It is characterized by being opened to the side. According to the present invention, when the duct is at the raised position, the internal termination optical fiber is prevented from protruding to the operation side, and is prevented from interfering with the switching work of the optical fiber outside the duct. The holding portion also serves as a protective wall for preventing an object from hitting the termination optical fiber from the outside. On the other hand, since the duct is opened to the operation side at the lowered position, the termination optical fiber can be easily taken out in this state.

[0009] According to a third aspect, the bending member cable-side optical fiber drawn from the cable fixing portion to the optical fiber wiring portion is wound, characterized in that provided for each of the termination unit . Between the cable fixing portion and the optical fiber wiring portion, the cable-side optical fiber introduced from the cable fixing portion to the optical fiber wiring portion sags such as an extra length, and the load of the sag portion is reduced by the cable side in the optical fiber wiring portion. They tend to act as tensile forces on optical fibers. According to this optical distribution board, it is possible to prevent the cable-side optical fiber from hanging down by winding the cable-side optical fiber around the curved member and then introducing the cable-side optical fiber into the optical fiber wiring section. As a result, a tensile force or the like is applied to the cable-side optical fiber in the optical fiber wiring section. Influence can be prevented.

According to a fourth aspect of the present invention , there is provided a jumper light which is a jumper-connecting termination optical fiber for switchably connecting an optical connector on one side of the optical module housed in each termination unit. Both ends of the fiber are connected to the same termination unit or a pair of termination units, and the termination position optical fiber wiring section is provided through an optical fiber introduction port provided such that the horizontal installation position and the opening direction are different. The extra length of the jumper optical fiber is curvedly absorbed by a curved portion formed at the lower end of the jumper optical fiber which is introduced between the optical fiber introduction ports. According to this optical distribution board, the ends of the jumper optical fibers are dropped between the two optical fiber introduction ports due to the horizontal separation distance between the two optical fiber introduction ports and the difference in the opening direction. Ensure that the bending radius of the jumper optical fiber exceeds the specified value. Therefore, even if the extra length processing space on the side of the termination unit is small, the extra length of the jumper optical fiber is secured with a sufficient bending radius due to the difference in the separation distance between the optical fiber introduction ports and the difference in the opening direction. Can be curved. Thereby, the extra processing space can be reduced in size.

[0011] According to a fifth aspect, prior to light fiber introducing wiring portion provided to extend vertically at KiNarutan unit side, terminated optical fiber wiring from the optical fiber introducing wiring portion The position of the optical fiber introduction port for introducing the termination optical fiber to the section is shifted, and a guide member for holding the termination optical fiber wired in the optical fiber introduction wiring section is provided separately from the guide member. The terminated optical fiber wired so as to pass between the optical fiber introduction port and the optical fiber introduction port is inclined with respect to the optical fiber in the optical fiber introduction wiring section. According to this optical distribution board, the optical fiber wired between the guide member and the optical fiber introduction port is inclined with respect to the terminated optical fiber wired so as to pass through the optical fiber introduction wiring section. Since they can be clearly distinguished, workability such as taking out can be improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An optical distribution board 20 according to an embodiment of the present invention will be described below with reference to FIGS. 1 (a) to 1 (c) to FIG. 1A to 1C, the optical distribution board 20
A plurality of termination units 22 in a frame 21
Line monitoring device 23, optical fiber selection device 24,
The optical monitoring unit 25 has a configuration in which the optical monitoring unit 25 and the optical monitoring unit 25 are stacked in multiple stages vertically (up and down in FIG. 1).

Each termination unit 22 is provided with the frame 21
A cable fixing portion 27 for fixing the optical cable 26 drawn inside, and a cable-side optical fiber 28 drawn from the terminal of the optical cable 26 can be connected to a termination optical fiber 29 drawn into the frame 21 by a connector. Module storage unit 3 for storing the end optical module 30
1 is provided. In addition, each termination unit 2
In 2, a module storage unit 31, an optical fiber wiring shelf 35, a duct 37, a vertical movement mechanism 39, and the like, which will be described in detail later, are provided integrally with the frame-shaped unit frame 22a.
When the unit frame 22a is fixed to the support frame 21a (post) or the like of the optical wiring board 20, the module storage portion 31,
The optical fiber distribution shelf 35, the duct 37, the vertical movement mechanism 39, and the like can be collectively provided on the optical distribution panel 20. The unit frame 22a is, for example, a fixed component 22b such as a bolt.
(See FIG. 2 (a)), it can be easily attached to the support frame 21a. In addition, the detachable fixing component 22b such as a bolt can attach and detach the unit frame 22a to and from the support frame 21a, so that the number of termination units 22 installed in the optical distribution board 20 can be changed freely. The cable fixing portion 27 may be attached to the frame 21 in advance, or may be attached later together with the attachment of the unit frame 22a. Also,
The cable fixing section 27 is provided with a tension member clamp 27a as necessary, and fixes the tension member 26a exposed at the end of the optical cable 26.
In FIG. 2, a door 21 that can be opened and closed is provided on the operation side of the frame 21.
c is provided, and the door 21c is normally closed to prevent inconvenience such as careless contact with an internal optical fiber.

As the cable-side optical fiber 28, an optical fiber such as a single-core or multi-core optical fiber tape is generally used. For example, an optical cord drawn from a cable terminal is also used. It is possible. The termination optical fiber 29 is an optical cord whose end is terminated by an optical connector 29 a (optical connector plug) so as to be connectable to a connector.
Optical cable 33 such as a cord cable pulled in from 2
The optical cord drawn out to the terminal and the cable introduction unit 3
An optical code or the like drawn directly from the second device is used. In the cable introduction unit 32, the optical cables 26, 33, etc. are fixed by using a fixing device such as a binding device, and are held down by a tensile force or the like. Optical connector 2 at the end of terminated optical fiber 29
9a is, for example, an SC type optical connector (Single fiber Coupling optical connector) defined in JIS C5973.
fiber connector), MU type optical connector (Miniature-Unit couplimg optica) specified in JIS C5983
An optical connector plug such as a fiber connector is employed. In FIG. 1A, reference numeral 32a denotes an inter-interconnect wiring unit that receives an optical fiber that is wired so as to pass between optical distribution boards or the like. The optical fiber 32b drawn into the optical distribution board 20 from the inter-unit wiring unit 32a becomes a terminated optical fiber.

2 (a), 2 (b), 2 (c) and 3
3A and 3B are diagrams showing the termination unit 22, wherein FIG. 3A is a plan view, FIG. 3B is a front view, FIG. 3C is a side view, and FIG. 3 is a perspective view. As shown in FIGS. 2 (a), 2 (b), 2 (c) and 3, the optical module 30 is in the form of a thin external case, and is vertically arranged on the module base 31a of the module storage section 31 to form a plurality of rows and columns. Is stored. Each optical module 30
The optical connector 30a provided on one side of the optical module 30 terminates the cable-side optical fiber 28 drawn into the optical module 30 so as to be connectable to the termination optical fiber 29. Each optical module 30 is housed in the module housing section 31 with the direction of the optical connector 30a aligned.
Each optical module 30 housed in the module housing 31
Is the operation side to which the optical connector 30a is directed (FIG. 2).
(C) Left side. It can be pulled out to the work space 34). Conversely, the module storage section 3 of the optical module 30
The storage work in the storage unit 1 is performed by inserting from the operation side. In the present embodiment, the optical modules 30 housed in the module housing 31 are the same size, and the optical connector 30a of each optical module 30 housed in the module housing 31 is
0 are aligned on substantially the same vertical plane. In addition, as the optical connector 30a, an optical connector adapter, an optical connector receptacle, or the like to which the optical connector 29a on the termination optical fiber 29 side can be connected is adopted.

The cable-side optical fiber 28 pulled out from the terminal of the optical cable 26 is drawn into the module storage section 31 via the optical fiber wiring shelf 35 provided on the upper side of the module storage section 31, and is wired to the target optical module 30. Is done. The optical fiber wiring shelf 35 is a module storage unit 3
The cable-side optical fiber 28 is wired in the optical fiber wiring shelf 35 and pulled down from an appropriate location to be wired to the target optical module 30. Even when the cable-side optical fiber 28 is not terminated so as to be connectable to a connector or when the optical fiber 28 is terminated so as to be connectable to a connector by an optical connector,
In the case where the optical module 30 cannot be connected to the optical connector 30a from the inside of the optical module 30,
0 is connected to the optical connector 30a via a built-in optical fiber or the like. The extra length of the cable-side optical fiber 28 is stored in the optical module 30 in a curved manner. The optical fiber wiring shelf 35 constitutes an optical fiber wiring section according to the present invention.

FIG. 5 is a front view showing a wiring state of the cable side optical fiber 28, and FIG. 6 is a view showing a specific example of a wiring state of the cable side optical fiber 28 on the optical fiber wiring shelf 35. (a) is a plan view and (b) is a front view. As shown in FIG. 5, the cable-side optical fiber 28 (in FIG. 5 and the like, a portion in which the cable-side optical fiber 28 is housed in a reinforcing tube and coded. Hereinafter, this portion is referred to as an “optical fiber cord 28b”). After being wound around the bending member 28 a provided for each of the termination units 22, it is introduced into the optical fiber wiring shelf 35. Since the cable-side optical fiber 28 in the optical fiber wiring shelf 35 can be prevented from hanging down between the cable fixing portion 27 and the optical fiber wiring shelf 35 by being wound around the bending member 28a, Hanging cable-side optical fiber 28
Of the cable-side optical fiber 2 in the optical fiber distribution shelf 35.
8 can be stably maintained. In addition, the bending member 2
The extra length of the cable-side optical fiber 28 can be absorbed by wrapping around the 8a or hanging from the bending member 28a, so that the extra length processing in the optical fiber wiring shelf 35 can be simplified or omitted. As shown in FIG. 6A, the bending member 28a is provided to be fixed to the rear plate 21b of the frame 21 in a protruding state. In the other figures, the bending member 2
Illustration of 8a is omitted.

The cable-side optical fiber 28 drawn from the optical cable 26 drawn into the termination unit 22 is
Basically, the cable-side optical fiber 28 is introduced into the optical fiber wiring shelf 35 of the termination unit 22. However, there may be a case where it is desired to introduce the cable-side optical fiber 28 into the optical fiber wiring shelf 35 of another termination unit 22. In this case, as shown by an imaginary line in FIG.
8a and then introduced into the optical fiber distribution shelf 35. The effect of winding the cable-side optical fiber 28 around the bending member 28a is as described above. Also,
Cable side optical fiber 28 exiting from optical cable 26
If the extra length is extremely long, the upper termination unit 22
Of the target termination unit 22 so as to be hooked on the curved member 28a of the target termination unit 22.
After being wound around the second bending member 28a, it is introduced into the optical fiber wiring shelf 35 of the termination unit 22.

6 (a) and 6 (b), the optical fiber cord 28b pulled into the optical fiber wiring shelf 35 is
A plurality of cord clamps 35a are arranged on the back side of the operation side of the optical fiber wiring shelf 35, and the cable side optical fiber 28 is led out at an appropriate position on the optical fiber wiring shelf 35. The exit position does not need to be constant for each optical fiber cord 28b.
It may be shifted as shown in (a) and (b). The cable-side optical fiber 28 led out from the tip of the optical fiber cord 28b clamped and fixed by the code clamp 35a is routed on the optical fiber wiring shelf 35 and wired so as to be directly above the target optical module 30. The cable-side optical fibers 28 inserted into the same optical module 30 are bound by clips 35b provided at the optical module 30 storage positions at the operation side end of the wiring shelf 35. Thereby, the plurality of cable-side optical fibers 28 can be efficiently inserted into the optical module 30 at a time. Although not shown, the same optical module 3
The plurality of cable-side optical fibers 28 inserted into the tube 0 may be housed in a tube, and the tube may be held and fixed by the clip 35b. In this configuration, clip 3
Even if the cable-side optical fibers 28 are unbundled by 5b, the plurality of cable-side optical fibers 28 are not bound by the tubes and are not separated. 35b
Work such as collective relocation can be performed efficiently.

As described above, the cable-side optical fiber 28 led out from the optical fiber cord 28b is connected to the optical module 30 to be inserted into the optical fiber distribution shelf 35.
The optical fiber distribution shelf 3
The exit position of the cable-side optical fiber 28 from the optical fiber cord 28b drawn into the cable 5 also corresponds to the position of the optical module 30 into which the cable-side optical fiber 28 is inserted, which is advantageous for insertion of the cable-side optical fiber 28. It is preferable to set the position (generally, a position close to the storage position of the optical module 30). As a result, there are many cases where the outlet position is not constant. However, by selecting and fixing an appropriate cord clamp 35a, each optical fiber cord 28b can be stably fixed at a target position of the optical fiber wiring shelf 35. .

On the other hand, the termination optical fiber 29 bends and absorbs the excess length 29 b from the cable introduction unit 32 at the extra length absorption portion 36 on the side of the target termination unit 22, and the distal end of the termination optical fiber 29 is inserted into the module storage portion 31. It is drawn into the duct 37 (code duct) arranged on the operation side. The duct 37
The terminating optical fiber 29 which extends along the module storage section 31 slightly below the module storage section 31 and is drawn into the duct 37 and wired, rises at an appropriate place, and Optical connector 30 of optical module 30
The connector is switchably connected to a.
Thereby, the target optical fibers 28 and 29 are connected to each other.

As shown in FIG. 1C, in the extra length absorbing portion 36, a curved member 36a protruding from the frame 21 is provided.
The bending process is performed by hooking a surplus length 29b on the upper side, or pulling up a portion hanging downward from the bending member 36a to bend a lower end portion. The termination optical fiber 29 drawn into the duct 37 from the excess length absorbing portion 36 is removably clamped by a clamp 38 provided near the entrance 37 a of the duct 37. Thus, for example, even if operations such as connection, disconnection (pulling out), and switching connection of the termination optical fiber 29 with respect to the optical connector 30a on the optical module 30 side are performed, the termination optical fiber 29 in the excess length absorbing portion 36 is performed. Since the vibration or the like caused by the above-mentioned operation or the like is not transmitted, the optical characteristics of the terminated optical fiber 29 can be stably maintained. The excess length absorbing portion 36 is configured by installing a bending member 36a, but the bending member 36a can be retrofitted in accordance with the installation of the unit frame 22a.

In FIG. 2C and FIG. 3, the duct 37 is a gutter-shaped member supported vertically by a vertical movement mechanism 39, and is located at a raised position 40 on the side of the module storage section 31. At the time, the protrusion of the terminated optical fiber 29 to the operation side is prevented by the pressing portion 37b, and when the optical fiber 29 is at the lowering position 41 below the rising position 40, the pressing portion 37b is displaced and opened toward the operation side. It is supposed to be. More specifically, the pressing portion 37b
It has a wall-like shape standing up from the operation side of the duct 37. The vertical movement mechanism 39 includes a module storage section 3 on the opposite side of the holding section 37b of the duct 37 about a hinge 39a arranged slightly below the module storage section 31.
One side is rotatably supported around a horizontal axis. However, a protruding piece 37c protruding from the hinge 39a toward the module storage unit 31 is inserted between a pair of stopper walls 42 and 43 provided separately from each other below the module storage unit 31. In the rotation range of the protruding piece 37c between the engagement protrusion 42a attached to the wall 42 and the stopper 43a (pin) provided near the stopper wall 43, the duct 37 is located closer to the operation side than the hinge 39a. The whole part moves up and down by rotation. As a result, when the duct 37 is at the ascending position 40, the pressing portion 37b
Prevents the termination optical fiber 29 from protruding to the operation side because the operation side of the duct 37 is closed, and damages the termination optical fiber 29 in the duct 37 due to collision of an article from the operation side. It also functions as a protective wall for preventing inconvenience.

In FIG. 3, one stopper wall 42 is
The other stopper wall 43 is a wall-shaped member provided on the operation side below the module storage unit 31, and is connected to each other. Module storage unit 3 via members 44 and 45
It is supported by one module base 31a.

The stopper wall 43 and the connecting member 45 extend horizontally along the module base 31a, and serve as partitions for preventing the termination optical fiber 29 from entering the rotation range of the projecting piece 37c of the duct 37. Fulfill. The stopper wall 43 has an optical fiber holder 46 for removably holding the termination optical fiber 29 wired between the optical connector 30a of the optical module 30 housed in the module housing 31 and the duct 37. (Cord holders) are protruded at an arrangement pitch substantially equal to the arrangement pitch of the optical modules 30 in the module storage section 31. The optical fiber holder 46 is provided for each of the optical modules 30 so that the termination optical fiber 2 connected to the optical connector 30a of the optical module 30 is provided.
In order to hold the bundles 9 in a bundle, a large number of termination optical fibers 29 are arranged and wired in units of the optical modules 30 between the module storage unit 31 and the duct 37.

When the duct 37 rotated about the hinge 39a of the vertical movement mechanism 39 is positioned at the descending position 41, the pressing portion 37b gradually becomes closer to the horizontal state from the standing state with the rotation of the entire duct 37, and the duct 37 is moved. Opened to the operation side. In this state, a new termination optical fiber 29 is drawn into the duct 37 or the termination optical fiber 29
Can be freely taken out. The descending of the duct 37 can be performed until the contact portion 37c contacts the stopper 43a. When the duct 37 is rotated to the ascending position 40, the engaging piece 37d attached to the projecting piece 37c engages with the engaging projection 42a provided on the stopper wall 42 so as to sandwich the engaging projection 42a. . Thereby, unless the engagement piece 37d is forcibly disengaged from the engagement protrusion 42a,
The lowering of the duct 37 from the raised position 40 is restricted. Further, since the engagement piece 37d made of an elastic material functions as a cushioning material, vibration is not easily transmitted to the duct 37, and the termination optical fiber 29 in the duct 37, all the optical fibers in the optical distribution board 20, etc. In addition, it is possible to prevent the optical communication from being affected by the vibration. It is preferable that the cushioning material is also provided on a portion of the contact piece 37d that comes into contact with the stopper wall 43. The holding portion is not limited to the above-described configuration, and may be any configuration that allows the opening of the duct to the operation side when the duct is lowered, and various configurations can be adopted. It is also possible to adopt a configuration that drives the main body of the duct in conjunction with elevating to open and close the duct operation side. As the up-down movement mechanism, for example, a mechanism that moves up and down vertically without rotating the duct can also be adopted.However, this configuration is simple in that the configuration can be simplified and the entire duct can be tilted open to the operation side. It is suitable to employ the vertical movement mechanism 39 exemplified in the embodiment.

In the termination unit 22, the cable route of the cable optical fiber 28 introduced from the cable fixing portion 27 to the target optical module 30 in the module storage portion 31 via the optical fiber wiring shelf 35 is provided. and certain optical fiber wiring unit via the duct 37 from the extra-length absorbing unit 36, the light module housed in the module housing section 31
Since the terminating optical fiber wiring section, which is the wiring route of the terminating optical fiber 29 to the optical connector 30a on the side of the cable 30 , is separated from each other, the cable side optical fiber 28 and the terminating optical fiber 29 are separated from each other. Also the termination unit 2
2 is divided and wired, and there is no fear of being entangled with each other. When viewed in detail, the optical fiber wiring shelf 35 is disposed above the module storage unit 31 near the module storage unit 31, and the duct 37 is disposed on the operation side of the module storage unit 31. Are separated via the module storage section 31,
Even in the vicinity of the module storage section 31, both optical fibers 2
The state in which 8, 29 are separated is maintained. For this reason,
Operations such as connection of the termination optical fiber 29 to the optical connector 30 a of the target optical module 30, extraction, and switching connection are performed from the optical fiber wiring shelf 35 to the module storage section 31.
There is no interference with the cable-side optical fiber 28 wired up to the optical module 30 in the inside, and the workability can be improved. Work such as wiring and removal of the optical fibers 28 and 29 in each wiring unit is also performed individually by the wiring unit.
They do not contact each other with the optical fiber in the wiring part on the other side, nor have the influence of disturbance of communication due to vibration.

In addition, the desired cable-side optical fiber 28
Of the termination optical fiber 29 to the optical module 3
It is only necessary to select the 0 optical connector 30a and connect the terminating optical fiber 29 to the connector, which is very easy. The switching connection of the termination optical fiber 29 to the cable side optical fiber 28 is also performed by the optical connector 30 of the optical module 30.
It can be performed very easily only by switching the connection of the termination optical fiber 29 to a. The optical connector 30a of the optical module 30 is exposed on the operation side of the module storage section 31 and is arranged in an orderly manner.
It is easy to select the optical connector 30a to be connected.

FIGS. 4A to 4C show the optical monitoring unit 2.
5A and 5B are views showing the vicinity of FIG. 5A, FIG. 5A is a plan view, FIG. 5B is a front view, and FIG. As shown in FIGS. 4A to 4C, the optical monitoring unit 25 has a configuration similar to that of the termination unit 22. When the unit frame 25a is attached to the support frame 21a of the optical distribution board 20, this unit frame The module storage portion 25b, the duct 25c, the vertical movement mechanism 25d, the optical fiber holder 25e, and the like, which are provided integrally with the optical distribution board 25, are provided collectively on the optical distribution board 20. In the module storage section 25b, a plurality of optical modules 25g in the form of a thin external case, which are vertically mounted on the module table 25f, are stored side by side. The optical module 25g is accommodated in the module accommodating portion 25b with the orientation of the optical connector 25h (optical connector adapter) attached to one side thereof being aligned, and the operation side (work space 25) to which the optical connector 25h is directed.
It can be pulled out to the i side). The insertion and withdrawal of the optical module 25g into and from the module storage portion 25b is performed by the guide piece 25j protruding from the optical module 25g.
Is inserted into the guide groove 25k on the module base 25f side and is slid and moved smoothly. In addition, since the guide piece 25j is inserted into the guide groove 25k and the upper part of the optical module 25g is supported by a support member (not shown), the storage position of the optical module 25g in the module storage part 25b is stabilized. And wobble and the like are prevented.

Each of the line monitoring device 23 and the optical fiber selecting device 24 has a unit frame 23a, 24a
The unit frame is fixed to
By fixing the 3a and 24a to the support frame 21a by the fixing means, the optical disc 20 is provided. Track monitoring device 2
Reference numeral 3 denotes an optical pulse tester such as an OTDR.

The optical connector 25h of the optical module 25g has a jumper optical fiber 47 having one end connected to the optical connector 30a of the optical module 30 in the termination unit 22.
The other end of the jumper cord (see FIG. 1) and the termination optical fiber 29 are switchably connected to a connector. These connected optical fibers 47 and 29 are connected to the optical module 25g.
Are connected to each other via a built-in optical coupler (not shown), and are also connected to the optical fibers 24b of the optical fiber selecting device 24, respectively. Optical fiber for jumper 4
7, the optical module 30 is the same as the termination optical fiber 29.
Function as a terminated optical fiber connected to the optical connector 30a. The optical fiber selecting device 24 is connected to the line monitoring device 23 via an optical fiber (not shown), and selectively switches and connects a large number of optical fibers 24b to the line monitoring device 23. The line monitoring device 23 is connected via the optical fiber 24b selected by the optical fiber selecting device 24,
The optical fiber 47 connected to the optical fiber 24b
Alternatively, the test light is incident on the termination optical fiber 29 and the return light of the incident light is observed, so that the cable-side optical fiber 28 and the termination optical fiber 2 connected to the optical fiber 47 are connected.
Monitor the optical line according to 9 for disconnection and the like. In the optical fiber selecting device 24, the optical fiber 24 with respect to the line monitoring device 23
While sequentially switching the connection of b, each optical fiber 47, 29
By monitoring the line by observing the return light of the incident light to the line, disconnection of many optical lines can be continuously and efficiently monitored. The optical fiber 24b functions as an optical line for allowing the test light output from the line monitoring device 23 to enter the optical fibers 29 and 47.

The optical module 25 of the optical fibers 47 and 29
The connection to g is appropriately selected. Only the optical fibers 28 and 29 for monitoring the disconnection of the optical line need be connected to the optical module 25g, and the other optical fibers 28 and 29 are Terminating optical fiber 2
9 to the optical module 30, and without passing through the optical module 25g for optical monitoring, the optical fiber 28,
29 may be connected to each other. Further, when there is no optical line for performing line monitoring, it is not necessary to install the line monitoring device 23, the optical fiber selection device 24, and the optical monitoring unit 25 on the optical distribution board 20. The line monitoring device 23, the optical fiber selection device 24, and the optical monitoring unit 25 are preferably detachable from the optical distribution board 20, so that it is easy to remove the line monitoring after installation if the line monitoring becomes unnecessary. It is. The fixing means 48 for fixing the line monitoring device 23, the optical fiber selection device 24, and the light monitoring unit 25 to the optical distribution board 20 is, for example, a bolt screwed to the support frame 21a,
With such fixing means 48, the track monitoring device 23,
The optical fiber selection device 24 and the optical monitoring unit 25 can be easily attached to and detached from the optical distribution board 20. For example, when connecting the optical fiber 28 on the optical cable 26 which is an external optical cable to the terminating optical fiber 29 on the transmission device side by the optical distribution board 20, both optical fibers are connected via the optical monitoring unit 25. When the connection between the optical fibers 28 and 29 is made, it is possible to monitor the disconnection or the like of the optical line related to each of the optical fibers 28 and 29. In the optical monitoring unit 25, one optical fiber 28,
Even if only 29 is connected, monitoring of the optical line related to the optical fiber is possible.

According to the optical distribution board 20, the termination unit 22 and the line monitoring device 2 are all unitized.
3. Only the required number of optical fiber selection devices 24 and optical monitoring units 25 need to be installed, and the number of cores can be flexibly handled. In particular, since the termination unit 22 can perform a series of processes from the fixing of the optical cable 26 to the termination of the connector by the optical module 30, the termination unit 22 can function alone as an optical distribution board. If the required number is increased in accordance with the number of optical cables 26 to be added to the optical fiber 26, it is possible to efficiently cope with the termination processing of the optical fiber 28 drawn out from the optical cable 26. Therefore, this optical distribution board 2
In the case of 0, there is an advantage that the optical wiring board in which the number of corresponding cores is determined from the beginning is unlikely to cause waste when the actual number of processing cores is smaller than the number of corresponding cores, and the cost can be reduced.

In the optical distribution board 20, the termination optical fiber 29 may be connected to the optical connectors 30a of the optical modules 30 arranged in order within the termination unit 22, so that the optical connection Needless to say, it is easy to compare the fibers 28 and 29, and furthermore, an optical fiber wiring section in which the cable-side optical fiber 28 is wired and a terminated optical fiber wiring section in which the terminated optical fiber 29 is wired. For example, even when the number of the cable-side optical fibers 28 and the terminating optical fibers 29 is increased, the optical fibers 28 and 29 are wired to predetermined wiring portions, so that the optical fibers 28 and 29 are separated. It can be easily processed to a contrasting state.

In the optical distribution board 20, a jumper optical fiber which is wired between the same or different termination units 22 and which is switchably connected between the optical connectors 30a of the optical module 30 is also used. But,
If a large number of jumper optical fibers are used in addition to the large number of terminated optical fibers 29 and 47, and the workability of switching connection of each of these optical fibers to the optical module 30 is also ensured, the aforementioned extra length absorption There is dissatisfaction with part 36. In view of this, the following will propose and explain a termination optical fiber wiring system shown in FIGS. 7 to 11,
The jumper optical fiber 49 is a so-called jumper cord, and both ends are connected to the optical connector 30a of the optical module 30.
This is a terminated optical fiber terminated so as to be connectable to a connector.

In the optical distribution board 50 shown in FIG. 7, the termination optical fiber 29 is utilized by utilizing the optical fiber distribution space 51 in which the spaces provided on the sides of the units 22, 23, 24 and 25 are communicated. , 47, 49 are wired to the units 22, 25. The optical distribution board 50 is different from the optical distribution board 20 in that the ducts 37 and 25c (the duct 25
c is the optical fiber 2 for FIGS. 4 (a) and 4 (b)).
Only the configurations related to the wirings 9, 47, and 49 are changed, and the other configurations are the same as those of the optical distribution board 20, and may be omitted in FIGS. 7 to 11 in some cases.

FIG. 8 schematically shows an example of a wiring route of the optical fibers 29, 47 and 49. 7 and 8, the terminated optical fiber 2 exited from the optical cable 33.
The duct 9 is drawn into the intended termination unit 22 through an optical fiber introduction wiring section 52 extending vertically in the optical fiber wiring space 51, and is a duct which is a termination optical fiber wiring section via a clamp 38. 37. The optical fiber introduction wiring section 52 is configured to hold the optical fiber in a predetermined area by, for example, a frame-shaped guide member, and is basically configured to be capable of freely taking out and storing the optical fiber anywhere. And The optical fiber 47 is also wired to the units 22 and 25 via the optical fiber wiring section 52. The optical fiber 49 uses another optical fiber introduction wiring part 53 that extends slightly up and down in the optical fiber wiring space 51 at a distance from the optical fiber introduction wiring part 52, and the optical fiber introduction wiring part 52. Between the termination units 22, more specifically, between the module storage sections 31 of the same termination unit 22 or different termination units 22, and between the optical connectors 30a of the optical modules 30 stored in the module storage sections 31. Is switchably connected. The excess length of the optical fiber 49 is absorbed by a curved portion 49a which is curved so as to pass between the introduction wiring portions 52 and 53 in a lower portion of the optical fiber wiring space 51 (lower side in FIGS. 7 and 8). You. In the optical fiber introduction wiring section 53, only the jumper optical fiber 49 is wired. In addition,
As shown in FIGS. 9A and 10, the optical fiber introduction wiring section 53 places the optical fiber 49 in a region inside a frame-shaped guide member 54 (code guide) provided at a plurality of locations in the extending direction. The optical fiber 49 can be freely taken and stored at any place.

7 and 8, in each of the termination units 22, the two clamps 38, 38a are set at the installation positions with respect to the operation side (the near side in FIG. 7 and FIG. 8).
It is provided with a different opening direction. FIG. 9 (a),
(B) and as shown in FIG.
a is a U-shape in which an optical fiber is housed inside, and is detached from above by a pressing member 38b to prevent the optical fiber from being detached. The clamp 38 is installed farther away from the operation side than the duct 37 of the termination unit 22, and has an opening direction that opens in a front view from the operation side. The clamp 38a
The clamp 38 is located closer to the operation side than the clamp 38, the opening direction differs from the clamp 38 by 90 °, and the central opening thereof is substantially in communication with the duct 37. That is, the installation positions of the clamps 38 and 38a are shifted in the horizontal direction,
Moreover, the opening directions are also different (the entrance 3 of the duct 37).
Radial to 7a). Optical fiber introduction wiring section 52, 5
The position 3 corresponds to the installation position of these clamps 38 and 38a and the opening direction.
Reference numeral 3 is located closer to the operation side than the optical fiber introduction wiring section 52. Both the clamps 38 and 38a function as optical fiber introduction ports to the termination optical fiber wiring section including the duct 37 in the termination unit 22.

Each of the optical fibers 29 and 47 is wired to the duct 37 via only the clamp 38. On the other hand, the jumper optical fiber 49 has one end introduced into the duct 37 from the optical fiber introduction wiring part 52 via the clamp 38 and the other end from the optical fiber introduction wiring part 53 to the clamp 38.
It is introduced into the duct 37 via a. The end wired from the optical fiber introduction wiring part 53 via the clamp 38a is higher than the end wired using the optical fiber introduction wiring part 52 and the clamp 38, or to the same termination unit 22. (See FIG. 8). Thereby, the wiring portion to the optical fiber introduction wiring section 52 is shortened, and the optical fibers 29, 4
The congestion of 7, 49 can be reduced as much as possible.

The jumper optical fiber 49 wired between the clamps 38 and 38a provided in the same terminating unit 22 or between a pair of terminating units 22 so as to have different horizontal installation positions and opening directions. The extra length is bent and absorbed by a curved portion 49a which is pulled down between the clamps 38 and 38a and formed so as to pass between the lower portions of the optical fiber introduction wiring portions 52 and 53. The bending portion 49a is formed so as to obliquely cross the optical fiber wiring space 51 (see FIG. 9A), and effectively utilizes the volume of the optical fiber wiring space 51 to increase the bending radius. Obtainable. Thereby, even if the optical fiber wiring space 51 is narrow, it is possible to secure a sufficient bending radius and absorb the extra length, and eventually, the optical fiber wiring space 51 can be downsized.

FIG. 11 is a sectional view taken along the line AA in FIG. 9B, showing the relationship between the jumper optical fiber 49 wired via the clamp 38a and the optical fiber introduction wiring section 53. Shown schematically. As shown in FIGS. 10 and 11, the optical fiber introduction wiring unit 5
Jumper optical fiber 4 introduced into duct 37 from 3
9 is wired so as to pass between the clamp 38a and the guide member 54 below the clamp 38a. By the way, as shown in FIG. 9A and FIG.
8a is shifted in the horizontal direction with respect to the optical fiber introduction wiring unit 53 (in the figure, the optical fiber introduction wiring unit 5
(Position closer to the operation side than 3). For this reason, the clamp 3
The jumper optical fiber 49 wired between the optical fiber 8a and the guide member 54 thereunder is provided with an optical fiber introduction wiring section 53.
It is inclined obliquely with respect to another jumper optical fiber 49 wired so as to pass through the inside. Thereby, in the intended termination unit 22, the optical fiber 49 introduced into the duct 37 can be clearly distinguished from other components, and workability in taking out the optical fiber from the optical fiber introduction wiring portion 53 can be improved. Thereby, in the optical distribution board 50, the workability of jumper connection of the jumper optical fiber 49 can be improved.
Further, the jumper optical fibers 49 wired between the clamp 38a and the guide member 54 can be collectively taken out by gathering them just enough to be grasped by hand. This makes it possible to efficiently transfer a plurality of jumper optical fibers 49 collectively for each termination unit 22. The guide member is not limited to the frame-shaped guide member 54, and may have any configuration as long as the optical fiber 49 in the optical fiber introduction wiring section 53 can be stably held in a certain area. . The same applies to the guide member provided in the optical fiber introduction wiring section 52.

Although not shown, the optical fiber introduction wiring section 52
The terminal optical fibers 29, 47, and 49 wired between the optical fiber introduction wiring section 52 and the clamp 38 are also shifted in the horizontal direction between the optical fiber introduction wiring section 52 and the optical fiber introduction wiring section 52. It is also possible to apply a configuration in which the termination optical fibers 29, 47, and 49, which are wired so as to pass through them, are inclined to improve the extraction workability and the like. In this case, not only the jumper optical fiber 49 but also the other termination optical fibers 29 and 47 can be improved in workability and the like.

It should be noted that the present invention is not limited to the above-described embodiment, and various changes can be made. For example, the configuration for separating the optical fiber wiring portion and the termination optical fiber wiring portion provided in the termination unit is not limited to separating the two wiring portions, and a configuration using a partition wall can also be adopted. . In the division using the partition wall, both wiring portions can be adjacent to each other via the partition wall, which contributes to downsizing of the termination unit and the like. The termination unit may be a unit that can be appropriately laminated, including a cable fixing portion, a surplus length absorbing portion, and the like. Thereby, the number of corresponding cores of the optical distribution board can be changed for each termination unit, and adjustment of the increase or decrease in the number of termination units to be installed is further facilitated. Further, in an optical distribution board configured by stacking or connecting the termination units in a desired number, the size of the optical distribution board is determined by the number of termination units installed. There is an advantage that waste such as securing a space does not occur.

[0044]

As described above, according to the optical distribution board of the present invention, from the fixing of the optical cable by the cable fixing section to the termination of the optical fiber connector of the optical module to which the optical fiber connector of the optical module can be connected. In the termination unit, the optical fiber wiring section and the termination optical fiber wiring section are separated from each other, so that the cable side optical fiber and the termination optical fiber are separated and wired. There is no fear of entanglement between the fibers. In addition, since the work of adding or removing optical fibers is performed individually in each wiring section, the work of one of the wiring sections may affect the optical characteristics of the optical fiber housed in the other wiring section. , And the work can be efficiently performed, and workability is improved. In addition, the termination unit and the optical monitoring unit
The number of knits to be installed depends on the number of cores supported by this optical distribution board.
The cable fixing part and module storage part
Waste that the number of installations etc. becomes excessive with respect to the actual number of processing cores.
Can be resolved. Once the optical distribution board has been installed,
The number of installed units, optical monitoring units, etc.
Excellent effect of easily responding to increases and decreases in the number of cables.
Play a fruit.

[0045]

According to the second aspect of the present invention, with the vertical movement of the duct provided in the termination unit by the vertical movement mechanism, the termination optical fiber is protected and the termination optical fiber is taken out by opening the duct. It is designed to switch between a workable state in which storage and storage are possible, so that by opening the duct only at the time of work, it is possible to improve workability such as connection, switching connection and removal of the termination optical fiber to the optical module. It has an excellent effect.

According to the third aspect of the present invention, since the bending member around which the cable side optical fiber drawn from the cable fixing portion to the optical fiber wiring portion is wound is provided for each of the terminating units, the cable side is provided. By winding the optical fiber around the curved member and then introducing the optical fiber into the optical fiber wiring section, it is possible to prevent sagging in the middle, and as a result, it is possible to prevent the tensile force or the like from affecting the cable side optical fiber in the optical fiber wiring section, An excellent effect of stably maintaining the wiring state and the storage state of the cable-side optical fiber in the optical fiber wiring section is achieved.

According to the fourth aspect of the present invention, the introduction of these optical fibers is caused by the horizontal separation distance between the two optical fiber introduction ports into which the ends of the jumper optical fibers are respectively introduced and the difference in the opening direction. Since the jumper optical fiber dropped between the openings has a curved radius exceeding the specified value, even if the excess processing space on the side of the termination unit is small, the separation distance between the optical fiber introduction ports and the opening direction Due to this difference, the surplus length of the jumper optical fiber can be curved while securing a sufficient radius of curvature, thereby providing an excellent effect that the extra length processing space can be reduced in size.

According to the fifth aspect of the present invention, the optical fiber introduction wiring section extending vertically at the side of the termination unit is connected to the termination optical fiber. The position of the optical fiber introduction port for introducing the termination optical fiber to the wiring section is shifted, and the guide member holding the termination optical fiber wired to the optical fiber introduction wiring section is separated from the guide member. The terminated optical fiber wired so as to pass between the provided optical fiber introduction port is tilted with respect to the optical fiber in the optical fiber introduction wiring portion and can be clearly distinguished, so that removal and the like can be performed. It has an excellent effect of improving workability.

[Brief description of the drawings]

FIGS. 1A and 1B are diagrams showing an optical distribution board according to an embodiment of the present invention, wherein FIG. 1A is a front view, FIG. 1B is a bottom view showing a cable introduction unit, and FIG. It is a perspective view which shows a bending member.

FIGS. 2A and 2B are diagrams showing a termination unit provided in the optical distribution board of FIG. 1, wherein FIG. 2A is a plan view, FIG.
(C) is a side view.

FIG. 3 is a perspective view of a termination module provided in the optical distribution board of FIG. 1 as viewed from an operation side.

FIGS. 4A and 4B are diagrams showing the vicinity of an optical monitoring unit provided in the optical distribution board of FIG. 1, wherein FIG. 4A is a plan view, FIG. 4B is a front view, and FIG.

FIG. 5 is a front view showing details of a wiring state of a cable-side optical fiber in the optical distribution board of FIG. 1;

6A and 6B are diagrams showing a specific example of a wiring state of cable-side optical fibers on an optical fiber distribution shelf in the optical distribution board of FIG. 1, wherein FIG. 6A is a plan view and FIG. 6B is a front view. .

FIG. 7 is a front view schematically showing another mode of the wiring system (form) of the termination optical fiber in the optical distribution board according to the present invention.

8 is a front view schematically illustrating an example of a wiring route of a termination optical fiber, a jumper cord, and a jumper optical fiber wired by the wiring method of FIG. 7;

9A and 9B are diagrams showing a termination unit of the optical distribution board to which the wiring system of FIG. 7 is applied, wherein FIG. 9A is a plan view and FIG. 9B is a front view.

FIG. 10 is a perspective view showing a wiring state of optical fibers in the vicinity of clamps installed in a plurality of termination units in FIGS. 9 (a) and 9 (b).

FIG. 11 is a sectional view taken along line AA of FIG. 9 (b);
4 schematically shows a wiring state of a jumper optical fiber wired between an optical fiber introduction wiring portion and a clamp whose position is shifted in the horizontal direction with respect to the optical fiber introduction wiring portion.

FIG. 12 is a front view showing a conventional optical wiring board.

[Explanation of symbols]

Reference Signs List 20 optical distribution board, 22 termination unit, 23 line monitoring device (optical pulse tester), 24b optical line on optical pulse tester side, 25 optical monitoring unit, 26 optical cable, 2
7 ... Cable fixing part, 28 ... Cable side optical fiber, 2
8a: curved member, 29: terminated optical fiber (optical cord),
29a: optical connector (optical connector plug), 30: optical module, 30a: optical connector (optical connector adapter), 31: module storage section, 35: optical fiber wiring section (optical fiber wiring shelf), 37: duct, termination Optical fiber wiring part (cord duct), 37b ... holding part, 38, 3
8a: optical fiber inlet (clamp), 39: vertical movement mechanism, 40: rising position, 41: lowering position, 49: termination optical fiber (optical fiber for jumper), 49a: bending portion, 5
0: Optical distribution board, 53: Optical fiber introduction wiring section, 54: Guide member (code guide).

Continuation of the front page (56) References JP-A-11-23855 (JP, A) JP-A-2000-131534 (JP, A) JP-A-2000-75144 (JP, A) (58) Fields investigated (Int. . ^7, DB name) G02B 6/00 H04Q 1/14 H05K 7/00

Claims (5)

(57) [Claims] A plurality of cables on an optical cable (26) side.
The optical fiber (28) is connected to the optical connector (29a).
Terminating optical fiber (2
9, 47, 49).
Te, cable fixing portion for fixing the optical cable (27),
The cable-side light extracted from the optical cable terminal
Fiber can be connected to the terminated optical fiber with a connector
A terminated optical connector (30a) is provided on one side.
The optical module (30)
Module storage unit (31) that can store multiple arrays in alignment
A termination unit (22) comprising: the optical module housed in the module housing unit
Can be pulled out to the operation side where the optical connector is directed
In the termination unit, the cable fixing portion
The eye inside the module storage part
Cable optical fiber introduced into a target optical module
An optical fiber wiring section (35) where the optical module is wired;
Switchable connector connection to module side optical connector
Terminated optical fiber on which the terminated optical fiber is wired
A wiring section is provided so as to be separated from each other, and one or both optical lines of the cable-side optical fiber and the termination optical fiber are connected to the optical line (24b) of the optical pulse tester (23). the connection light monitoring unit (25), wherein the termination unit, the optical wiring board you characterized in that it is made possible installation purposes number (20). 2. A plurality of cables on the optical cable (26) side.
The optical fiber (28) is connected to the optical connector (29a).
Terminating optical fiber (2
9, 47, 49).
Te, cable fixing portion for fixing the optical cable (27),
The cable-side light extracted from the optical cable terminal
Fiber can be connected to the terminated optical fiber with a connector
A terminated optical connector (30a) is provided on one side.
The optical module (30)
Module storage unit (31) that can store multiple arrays in alignment
A termination unit (22) comprising: the optical module housed in the module housing unit
Can be pulled out to the operating side of the optical connector is eclipsed directed
In the termination unit, the cable fixing portion
The eye inside the module storage part
Cable optical fiber introduced into a target optical module
An optical fiber wiring section (35) where the optical module is wired;
Switchable connector connection to module side optical connector
Terminated optical fiber on which the terminated optical fiber is wired
A wiring section is provided separately from the wiring section, and the duct (3) is disposed on the operation side of the module storage section and supported vertically by a vertical movement mechanism (39).
7) stores the terminated optical fiber, and the duct includes:
When the termination optical fiber is at the raised position (40) on the side of the module storage section, the protrusion of the termination optical fiber toward the operation side is suppressed by the holding section (37).
b), the pressing portion is displaced and opened toward the operation side when the pressing portion is at the lowering position (41) below the raising position.
Optical distribution board. 3. A plurality of cables on an optical cable (26) side.
The optical fiber (28) is connected to the optical connector (29a).
Terminating optical fiber (2
9, 47, 49).
Te, cable fixing portion for fixing the optical cable (27),
The cable-side light extracted from the optical cable terminal
Fiber can be connected to the terminated optical fiber with a connector
A terminated optical connector (30a) is provided on one side.
The optical module (30)
Module storage unit (31) that can store multiple arrays in alignment
A termination unit (22) comprising: the optical module housed in the module housing unit
Can be pulled out to the operation side where the optical connector is directed
In the termination unit, the cable fixing portion
The eye inside the module storage part
Cable optical fiber introduced into a target optical module
An optical fiber wiring section (35) where the optical module is wired;
Switchable connector connection to module side optical connector
Terminated optical fiber on which the terminated optical fiber is wired
The wiring member is provided separately from the cable member, and the bending member (28) around which the cable-side optical fiber drawn into the optical fiber wiring portion from the cable fixing portion is wound.
a) is, the optical wiring board you characterized in that provided for each of the termination unit. 4. A plurality of cables on an optical cable (26) side.
The optical fiber (28) is connected to the optical connector (29a).
Terminating optical fiber (2
9, 47, 49).
Te, cable fixing portion for fixing the optical cable (27),
The cable-side light extracted from the optical cable terminal
Fiber can be connected to the terminated optical fiber with a connector
A terminated optical connector (30a) is provided on one side.
The optical module (30)
Module storage unit (31) that can store multiple arrays in alignment
A termination unit (22) comprising: the optical module housed in the module housing unit
Can be pulled out to the operation side where the optical connector is directed
In the termination unit, the cable fixing portion
The eye inside the module storage part
Cable optical fiber introduced into a target optical module
An optical fiber wiring section (35) where the optical module is wired;
Switchable connector connection to module side optical connector
Terminated optical fiber on which the terminated optical fiber is wired
A jumper, which is a termination optical fiber for jumper connection, wherein a wiring portion is provided separately from each other, and a switchable connector is connected between optical connectors on one side of the optical module housed in each termination unit. The optical fiber inlets (38, 38) are provided such that both ends of the optical fiber for use (49) are different in horizontal installation position and opening direction between the same termination unit or a pair of termination units.
38a), each of the jumper optical fibers is introduced into the terminated optical fiber wiring section, and the extra length of the jumper optical fiber is reduced by the curved portion (49a) formed at the lower end of the jumper optical fiber dropped between the optical fiber introduction ports. optical wiring board you characterized by being curved absorbed (50). 5. A plurality of cables on an optical cable (26) side.
The optical fiber (28) is connected to the optical connector (29a).
Terminating optical fiber (2
9, 47, 49).
Te, cable fixing portion for fixing the optical cable (27),
The cable-side light extracted from the optical cable terminal
Connector connectable fiber to the terminated optical fiber
A terminated optical connector (30a) is provided on one side.
The optical module (30)
Module storage unit (31) that can store multiple arrays in alignment
A termination unit (22) comprising: the optical module housed in the module housing unit
Can be pulled out to the operation side where the optical connector is directed
In the termination unit, the cable fixing portion
The eye inside the module storage part
Cable optical fiber introduced into a target optical module
An optical fiber wiring section (35) where the optical module is wired;
Switchable connector connection to module side optical connector
Terminated optical fiber on which the terminated optical fiber is wired
A wiring portion is provided separately from each other, and the optical fiber introduction wiring portion (53), which is provided to extend vertically on the side of the termination unit, is formed by the optical fiber introduction wiring portion. The position of the optical fiber introduction port (38a) for introducing the termination optical fiber into the end optical fiber wiring section is shifted, and a guide member (54) for holding the termination optical fiber wired to the optical fiber introduction wiring section. ) And the termination optical fiber wired so as to pass between the optical fiber introduction port provided separately from the guide member is inclined with respect to the optical fiber in the optical fiber introduction wiring section. light wiring board, characterized in that.