JP4215938B2 - Optical module, optical wiring system and optical wiring unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical module, an optical wiring system, and an optical wiring unit.
[0002]
[Prior art]
In various optical wiring units such as a frame such as an optical distribution board and an optical junction box, a plurality of optical modules in the appearance of a thin plate housing optical fibers are mounted, mounted on one side of the optical module, Widely adopted to connect optical fibers in an optical module so that they can be switched by connecting another optical fiber to an optical connector that is terminated so that it can be connected to a connector. Has been.
24A and 24B show an example of an optical wiring board.
24 (a) and 24 (b), the optical wiring board 70 has a configuration in which units 71, each of which accommodates an optical module 1 in the form of a thin-walled outer appearance in a vertical arrangement, a horizontal arrangement, and a plurality of arrangement states, are vertically mounted in multiple stages. . An optical connector 3 (optical connector adapter) provided on one side of each optical module 1 is arranged on the switching connection work surface side that is one side of the unit 71. Each optical module 1 houses an optical fiber 4 drawn from the other side, and terminates the optical fiber 4 so that the optical connector 4 can be connected to the connector. Then, another optical fiber 73 terminated so as to be connector-connectable by an optical connector 72 (optical connector plug) is connected to the optical connector 3 from the switching connection work surface of the unit 71, whereby the optical connector 3 The optical fibers 4 and 73 are connected to each other via the switch.
[0003]
FIGS. 25A, 25B, and 25C show a conventional optical module.
25 (a), (b), and (c), the optical module 1 is drawn into the module main body 2 by the optical connector 3 mounted on one side of the module main body 2 in the appearance thin plate case shape. The optical fiber 4 is terminated so that it can be connected to a connector. The inside of the module body 2 is partitioned in the thickness direction by a partition member 5. The storage space 6 defined on one side of the partition member 5 stores the extra length of the optical fiber 4 in a curved manner, and the storage space 7 defined on the other side of the partition member 5 stores the optical connector 3. The optical connection part 9 (optical connector, fusion splicing part, etc.) between the internal optical fiber 8 connected to the optical fiber 4 is accommodated. One end of the internal optical fiber 8 is branched, for example, 1: 4, 1: 8, etc., and the tip of the optical fiber 4 is connected to the end of the internal optical fiber 8 on the non-branched side, The optical fiber 4 is branched and connected to the optical connector 3. The terminal of the optical fiber 4 drawn into the optical module 1 is branched into a plurality of optical fibers terminated so as to be connectable by an optical connector (optical connector plug), and the optical connector 3 is branched by each branched optical fiber. On the other hand, when the connector can be connected from the inside of the optical module 1, the connection with the internal optical fiber 8 can be omitted by directly connecting the plurality of branched optical fibers to the optical connector 3.
When the optical fiber 4 whose terminal is branched by an optical component such as an optical coupler interposed in the middle is stored, the optical component such as the optical coupler is also stored in the storage space 7. However, when storing optical components such as optical couplers, it is necessary to use the optical module 1 provided with a holder or the like that can stably hold the optical components.
Since the space between the two storage spaces 6 and 7 is partitioned by the partition member 5, for example, operations such as taking out the extra length of the optical fiber 4 in the storage space 6 are stored in another storage space 7. There is an advantage that it can be performed efficiently without interfering with optical components such as an optical fiber, the optical connecting portion 9 and the optical coupler. The optical fiber 4 is communicated between the storage spaces 6 and 7 through a communication hole 10 opened in the partition member 5. The module main body 2 has a tray shape that is opened and closed by a lid 11 that is detachably provided on one side, and the storage space 6 can be opened first by removing the lid 11. The storage space 7 can be opened by taking out the partition member 5 made of a sheet or the like separate from the module main body 2 in a state in which the module body 2 is opened, whereby the optical fiber 4 and the optical connection portion can be opened. 9 can be stored and taken out. The lid 11 is openable and detachable (detachable) by an elastic claw 11 a that is detachable with respect to the module body 2.
[0004]
[Problems to be solved by the invention]
By the way, conventionally, it is common to use a dedicated optical module corresponding to the type and size of optical components to be stored, the number of branches of the optical fibers 4 and 8 in the module body 2, the branching form, etc. It was necessary to prepare many types of optical modules. Not only the optical elements such as optical couplers, but also whether or not attachment parts are attached in the middle of the optical fiber is determined by the number of optical fiber branches, the branching form, etc., so it is necessary to prepare an optical module that can handle this. is there. For this reason, for example, a plurality of molds for molding an optical module made of a resin such as plastic are required, and an increase in cost is unavoidable. Also, in view of the use of multiple types of optical modules, if multiple types of units for storing optical modules are prepared, the cost will increase significantly, and multiple units will be wired according to the type of optical module. When mounted on a panel, the size of the optical wiring board is increased. Even a unit structure that can cope with the structures of a plurality of types of optical modules has a problem that the structure becomes complicated and it is difficult to reduce the cost.
[0005]
The present invention has been made in view of the above-described problems, and exhibits excellent versatility corresponding to the number of branches of optical fibers housed therein, branching forms, types of optical components housed therein, and the like. An object is to provide an optical module, an optical wiring system, and an optical wiring unit that can realize cost reduction.
[0006]
[Means for Solving the Problems]
According to the present invention, in an optical module in which an optical connector for terminating the optical fiber so as to be connected to a connector is attached to one side of a case-like module main body that accommodates the optical fiber, the optical fiber is provided in the module main body. Branch part in the middle of the fiber , Retaining parts ,and Optical elements such as optical couplers At least one of A holder portion for supporting the optical component is provided, The inside of the module main body is partitioned in a thickness direction by a partition member, and is defined into an output side storage space and an input side storage space via the partition member, and the optical fiber passes through the input side storage space. Introduced into the output-side storage space and terminated by the optical connector, the holder portions are respectively provided in the output-side storage space and the input-side storage space, and each storage space has at least one of the holder portions. One Holder mounting part to which a holder for supporting the optical component can be retrofitted Can function as An optical module characterized by the above is used as means for solving the problems.
According to a second aspect of the present invention, there is provided an optical wiring system according to the number of branches of the optical fiber in the module main body of the optical module according to the first aspect, the branch form, or the like. , The optical component is held by selectively using a holder attached to the holder attaching portion.
According to a third aspect of the present invention, there is provided an optical wiring unit comprising a unit frame that houses a plurality of the optical modules according to the first aspect side by side, wherein the optical module is provided with the optical connector in the module body. A plurality of wirings are accommodated side by side in a direction that exposes the connector mounting wall to the work surface provided on one side of the unit frame, and the wiring is opened in the connector mounting wall of the optical module housing the optical branching device. An optical fiber in which a branched optical fiber branched into a plurality by the optical branching unit is terminated so as to be connectable to the connector by the optical connector is drawn out from the opening, and the optical fiber drawn out from the wiring port is drawn in the unit frame A connector can be connected from the work surface side to the optical connector of another optical module. And said that you are.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1A and 1B are diagrams showing an optical wiring board as an optical wiring unit 80 according to the present invention, wherein FIG. 1A is a plan view and FIG. 1B is a front view.
As shown in FIG. 1, an optical wiring unit 80 (hereinafter also referred to as “optical wiring board 80”) includes a termination frame 82 in which termination units 81 are mounted in multiple stages, and a connection unit 83. Are connected side by side and connected to a connecting frame 84 that is mounted in multiple stages in the vertical direction.
[0008]
2A to 2C are views showing the termination unit 81, where FIG. 2A is a plan view, FIG. 2B is a front view, and FIG. 2C is a side view. FIG. 3 is a front view showing a unit mounting frame 82a provided on the termination frame 82, and FIG. 4 is an exploded perspective view showing a mounting structure of the termination unit 81 with respect to the unit mounting frame 82a.
2 (a) to 2 (c) to FIG. 4, the termination unit 81 is a vertically placed horizontal array of termination optical modules 20a (hereinafter sometimes referred to as "termination modules 20a") in the form of thin sheet cases. A plurality of frame-shaped unit frames 85 that are stored in an array are mounted on the termination frame 82 by being detachably mounted on the unit mounting frame 82a by a fixing part 82b (see FIG. 4). Specifically, the unit mounting frame 82a is fixed to the back plate 82c of the termination frame 82, and two of the unit mounting frames 82a extend vertically. The unit frame 85 is placed on a guide member 82e projecting in multiple stages on the opposing inner surface side of each unit mounting frame 82a, and the depth direction of the termination frame 82, that is, the depth direction in FIG. 3 is inserted into the termination frame 82 by sliding in the depth direction of the paper surface in FIG. 3 and from the left front side of the paper surface in FIG. 4 to the right back direction, and the fixing portions 85a protruding from the left and right sides of the unit frame 85 are respectively provided. It is mounted at the target position of the termination frame 82 by being fixed to the unit mounting frame 82a by the fixing component 82b. In the present embodiment, the fixing component 82b is specifically a screw that is removably screwed into a screw hole 82f of the unit mounting frame 82a, and the fixing component 82b is fastened to the unit mounting frame 82a. If released, the termination unit 81 can be pulled out from the termination frame 82 to the work surface side, that is, in front of the middle paper surface in FIG. 1B, in front of the paper surface in FIG. 3, and to the left front surface in FIG.
[0009]
The termination unit 81 includes the termination module 20a on the working surface side with respect to the unit frame 85, that is, in front of the middle sheet in FIG. 1B, in the lower side in FIG. 2A, and in FIG. The unit frame 85 that can be pulled out to the front side, the left side in FIG. 2C, a connection portion storage shelf 86 mounted on the upper portion of the unit frame 85, and a work surface side of the unit frame 85 are provided. The wiring duct 87 is provided. The connection portion storage shelf 86 is provided so as to be drawn out from the upper part of the unit frame 85 to the work surface side, and the wiring duct 87 is provided so as to protrude from the lower part of the unit frame 85 to the work surface side.
[0010]
In the termination unit 81, the optical module 20 a is slidably supported between a pair of plate-like rail members 95 and 96 that are opposed to each other above and below the unit frame 85, so that the optical module 20 a is slidably supported. Is stored on the work surface side so that it can be pulled out. The upper and lower rail members 95, 96 are formed with a plurality of guide grooves 95a, 96a extending in the depth direction from the work surface side, and the optical module housed in the unit frame 85 is either upper or lower By inserting the guide grooves 95a and 96a into the positioning pieces projecting on one side or both sides, the connecting unit 83 can be housed and pulled out to the work surface side by a smooth sliding movement. In the termination module 20a shown in FIGS. 16 (a) and 16 (b), the mounting plate 53 (see also FIG. 8 (b)) mounted on the lower wall 56 side serves as a positioning piece, and the lower rail member 96 is used. Is inserted into the guide groove 96a. The optical module 20a does not include a positioning piece inserted into the guide groove 95a on the upper end side (upper wall 55 side), but the optical module housed in the termination unit 81 has positioning pieces on both upper and lower ends. Can be used. In addition, the optical module 20a has an engagement recess (not shown) formed in the upper rail member 95 with a protrusion 55b projecting from a latch 55a extending from the upper wall 55 to the connector mounting wall 34 side. 3), the engaging recesses can be stably stored in a predetermined position in the termination unit 81 and operated by the latch 55a (downward pressing operation and pulling operation) protruding toward the work surface. By releasing the engagement with the place, it can be pulled out to the work surface side.
[0011]
As shown in FIGS. 1 (a) and 1 (b), an optical fiber 90 introduced into the termination frame 82 from an optical fiber introduction portion 89 provided in the outer frame 88 of the termination frame 82 is terminated. It is wired to the surplus length absorbing portion 91 that is a space secured on one side of the frame 82 (left side in FIG. 1), and distributed to the target termination unit 81. A number of drawing members 89a are projected from the optical fiber introducing portion 89, and the optical fiber 90 is fixed to the drawing member 89a by using a binding member (string or the like) or the like and held.
The optical fiber termination frame 82 includes a unit mounting portion 92 in which the termination units 81 are mounted in multiple stages in the vertical direction, and the surplus length absorbing portion 91 is interposed via the unit mounting portion 92. It is secured on the side opposite to the connection frame 83. Further, the surplus length absorbing portion 91 absorbs the surplus length of the optical fiber 90 by wiring the optical fiber 90 so as to be hooked on the curved guides 93 provided at a plurality of locations.
In FIGS. 1A and 1B, the optical fiber introducing portion 89 is provided at the upper portion of the outer frame 88, but the installation position of the optical fiber introducing portion is not limited to this, and the termination frame is provided. The lower part etc. of the body 82 may be sufficient.
[0012]
As shown in FIGS. 2A to 2C, the connection portion holder 86a provided at the center of the connection portion storage shelf 86 has an optical fiber 90 drawn into the termination unit 81 and an optical module 20a. The optical connection portion 94 with the optical fiber 41 drawn out from is clamped and held so that it can be taken out. Various configurations such as a fusion splicing portion and an optical connector can be adopted as the optical connecting portion 94. The optical fiber 90 is drawn from one side (left side in FIG. 2 (a), left side in FIG. 2 (b)) into the connection portion storage shelf 86, and the optical fiber 41 on the optical module 20a side is connected to the connection portion storage shelf. 86 is drawn from the other side (right side in FIG. 2A, right side in FIG. 2B).
The optical fibers 90 and 41 drawn into the connection portion storage shelf 86 are fastened by clamps 86b provided on both left and right sides of the connection portion storage shelf 86 when viewed from the front (from the work surface side). Wiring is done by pulling down. The connection portion storage shelf 86 is stored in the unit frame 85 except during work such as storage and holding work of the optical connection portion 94. In this stored state, the optical fibers 90 and 41 are wired so as to be drawn out from the clamp 86b to the work surface side without interfering with the unit frame 85. The optical fiber 41 on the optical module 20a side is wired to the connection portion storage shelf 86 so as to rise from the vicinity of the curved guide 87a provided at the end portion on the connection frame 84 side of the wiring duct 87 below the unit frame 85. ing.
Each optical module 20a is housed in the termination unit 81 with the connector mounting wall 34 on which the optical connector 40 is mounted facing the work surface, and the optical fiber 41 on the optical module 20a side is connected to the connector mounting wall 34. It is pulled out from the wiring port 34b opened in the.
[0013]
The optical fiber 41 on the optical module 20a side is connected to the optical connector 40 attached to one side of the optical module 20a in the optical module 20a, and is terminated so that the connector can be connected. Therefore, the optical fiber 90 drawn into the termination unit 81 is connected to the optical fiber 41 on the target optical module 20a side, so that the optical connector 40 of the optical module 20a allows the optical fiber 90 from the work surface side of the termination unit 81. It is terminated so that the connector can be connected to the optical fiber connected to the optical connector 40.
The optical connector 40 is an optical connector adapter here, but is not limited to this. For example, another optical fiber such as an optical connector receptacle can be connected to the connector from the outside (an optical connector plug at the tip of the optical fiber can be connected). Various female optical connectors can be used.
[0014]
FIG. 5 is an optical wiring diagram showing a connection state between the optical fibers 90 and 41 in the termination unit 81.
In FIG. 5, the optical fiber 41 includes a plurality of branches whose ends are terminated to be connectable by an optical connector 42 with respect to one end formed of a multi-core optical fiber portion 41 a such as a multi-core optical fiber cord. The optical fiber 41b is an optical fiber for branch connection (so-called fan-out cord or the like) branched via the branching portion 43, and each branch optical fiber 41b is inside the optical module 20a with respect to the optical connector 40 that is an optical connector adapter. The connector is connected from.
[0015]
The curved guide 87a is provided facing a jumper working portion 98 that is a space secured between the unit mounting portions 92 and 97 of the termination frame 82 and the connection frame 84, and the wiring duct 87 includes: The jumper optical fiber 100 wired between the termination unit 81 of the termination frame 82 and the connection unit 83 of the connection frame 84 is drawn from the jumper working portion 98 via the curved guide 87a. Further, in the vicinity of the curved guide 87a, a clamp 87b is provided for clamping the optical fibers 90 and 41 wired to the wiring duct 87 so that they can be taken out.
[0016]
As shown in FIGS. 1B and 2C, the jumper optical fiber 100 includes the optical connector 40 of the optical module 20a housed in the termination unit 81 of the termination frame 82, and the connection frame. 84 is an optical fiber such as an optical fiber cord that is switchably connected (jumper connection) between the optical connectors 20b and 20c of the optical modules 20b and 20c housed in the connection unit 83, and both ends are respectively connected by the optical connector 100a. The optical module 20a, 20b is terminated so that the connector can be connected to the optical connector 40 on the side. In the termination unit 81, the jumper optical fiber 100 is detachably connected to the optical connector 40 of the target optical module 20 a by pulling up from the wiring duct 87.
[0017]
As shown in FIG. 1B and FIGS. 6A to 6C, the connection frame 84 has a unit mounting portion 97 provided at the center of the frame-shaped outer frame 101 and a connection unit 83 vertically It is designed to be installed in multiple stages. The connection unit 83 is attached to and detached from a unit mounting frame (not shown) fixed to the back plate 102 of the external frame 101 by detachably fixing the fixing portions 108a on both the left and right sides of the unit frame 108 with fixing means such as screws. Mounted as possible.
[0018]
In the connecting frame 84, the optical fiber 104 drawn from the optical fiber introducing portion 103 provided in the external frame 101 is secured on the opposite side facing the termination frame 82 via the unit mounting portion 97. It is distributed and wired to the target connection unit 83 of the unit mounting portion 97 via the surplus length absorbing portion 105 that is a space. The optical fiber introducing portion 103 has a configuration in which a plurality of retaining members 103a for fixing the optical fiber 104 using a binding member or the like are provided in a protruding manner. In the surplus length absorbing portion 105, the surplus length of the optical fiber 104 is subjected to a curving process, for example, by wiring the optical fiber 104 so as to be hooked on the curving guides 106 provided at a plurality of locations.
[0019]
As shown in FIGS. 6A to 6C, the connection unit 83 includes a frame-shaped unit frame 108 that accommodates a plurality of optical modules 20b and 20c in the form of thin-plate external appearances arranged vertically and horizontally, and this unit frame. The first wiring duct 109 and the second wiring duct 110 are provided on the work surface side 108, that is, the lower side in FIG. 6 (a), the front side in FIG. 6 (b) and the left side in FIG. 6 (c). It has a configuration with.
The optical modules 20b and 20c are housed in the unit frame 108 with the connector mounting wall 34 facing the work surface.
The optical modules 20b and 20c are different in the optical components housed therein, the number of branches of optical fibers, and the like, and there is no difference in the module body 30 itself constituting the optical modules 20b and 20c. Also, the difference between the optical module 20a accommodated in the termination unit 81 and the optical modules 20b, 20c is the difference in the number of optical components and optical fibers accommodated therein, the branch form (the multi-fiber optical fiber by the branch portion). The difference between the single-core branch and the branch using an optical element such as an optical coupler), and there is no difference in the module body 30 itself. This point will be described in detail later. In addition, in the case where the components common to the optical modules 20a, 20b, and 20c are described, they may be referred to as “optical modules 20”.
[0020]
In the connection unit 83, the optical modules 20b and 20c are slidably supported between a pair of plate-like rail members 111 and 112 disposed on the top and bottom of the unit frame 108 so as to be slidable. 20b and 20c are housed in the work surface side so that they can be pulled out. In the rail members 111 and 112, a plurality of guide grooves 111a and 112a are formed in parallel to realize a smooth sliding movement of the optical module by inserting a positioning piece protruding from the optical module. In the optical modules 20b and 20c, the mounting plate portion 53 (see FIGS. 8A and 8B) that is mounted on the lower wall portion 56 and functions as a positioning piece is inserted into the guide groove 112a of the lower rail member 112. By doing so, the housing with respect to the connection unit 83, the drawing to the work surface side, and the like can be performed smoothly.
In addition, the optical modules 20b and 20c have an engaging recess (formed on the upper rail member 111) with a protrusion 55b projecting from a latch 55a extending from the upper wall portion 55 to the connector mounting wall 34 side. (Not shown) is detachably engaged so that the latch 55a is stably stored in a predetermined position in the termination unit 81 and is operated by the latch 55a projecting to the work surface side (down-pressing operation and pulling-out operation). By releasing the engagement with the recess, it can be pulled out to the work surface side.
[0021]
The first wiring duct 109 extends along the working surface side edge of the lower rail member 112 at the lower part of the unit frame 108, and the second wiring duct 110 is connected to the first wiring duct 110. On the lower side of the duct 109, it extends in parallel with the first wiring duct 109. One end of the first wiring duct 109 in the extending direction is opened facing the jumper working portion 98. The second wiring duct 110 is opened with one end in the extending direction facing the jumper working portion 98 and the other end in the extending direction facing the surplus length absorbing portion 105. It communicates with the absorber 105. A curved guide 109a and a clamp 109b are provided at one end in the extending direction of the first wiring duct 109, and clamps 110a are provided at both ends in the extending direction in the second wiring duct 110. The first wiring duct 109 is provided with a clamp 109b at a place other than one end in the extending direction.
[0022]
7A and 7B are optical wiring diagrams in the connection unit 83. FIG.
As shown in FIGS. 7A and 7B, in the connection unit 83,
(1) The optical fiber 104 drawn into the connection frame 84 is accommodated in the optical module 20b (hereinafter sometimes referred to as “jumper module 20b”) and directly connected to the optical connector 40 from the inside of the optical module 20b. Thus, the optical connector 40 is terminated so as to be connectable to the jumper optical fiber 100 (see FIG. 7A).
(2) An optical fiber 114 (specifically, a base) drawn from an optical module 20c (hereinafter sometimes referred to as “coupler module 20c”) incorporating an optical coupler (hereinafter referred to as “optical coupler 113”) as the optical splitter 113. The end side optical fiber 114a) is connected from the work surface side to the optical connector 40 of the optical module 20b that is terminated so that the optical fiber 104 can be connected to the connector, and is connected to the jumper optical fiber 100 by the optical connector 40 of the coupler module 20c. To be connected to the connector (see FIG. 7B),
The optical fiber 104 can be terminated so as to be connectable to the jumper optical fiber 100 by selecting the two termination methods.
Whichever termination method is adopted, the jumper optical fiber 100 drawn into the first wiring duct 109 is connected to the optical connector 40 of the target optical modules 20b and 20c so as to be pulled up appropriately. Thus, the optical fibers 100 and 104 are optically connected to each other.
[0023]
The optical fiber 104 is, for example, a so-called in-house terminated cord, and the like, which is a terminated optical fiber that can be connected to a connector by an optical connector 104 (optical connector plug), and is connected to the optical connector 40 of the optical module 20b. On the other hand, the connector can be directly connected from the inside of the optical module 20b. Therefore, the optical fiber 104 drawn into the connection unit 83 is simply housed in the optical module 20b and connected to the optical connector 40 (termination method shown in FIG. 7A). The optical fiber 100 can be terminated so that a connector can be connected.
[0024]
In the termination system shown in FIG. 7B, the wiring port 34b (FIGS. 8A, 8B, 21A, 21A) provided in the connector mounting wall 34 of the optical module 20c incorporating the optical coupler 113 is used. The optical fiber 114 drawn out from (b) is connected to the optical connector 40 of the jumper module 20b in which the optical fiber 104 can be connected to the optical connector 40 by the optical connector 40 (the left side in FIG. 7B). Connect the connector. The other end of the optical fiber 114 is branched into a plurality of branched optical fibers 114b with respect to one end (hereinafter referred to as “base end side optical fiber 114a”) which is not branched by an optical coupler 113 disposed in the middle. This is an optical fiber for branch connection. The branch optical fiber 114b is housed in the coupler module 20c together with the optical coupler 113, and the distal ends terminated so as to be connectable by the optical connector 114f are connected to the optical connector 40 from the inside of the coupler module 20c. Yes. An end portion of the base-end side optical fiber 114a terminated so as to be connectable by an optical connector 114c (optical connector plug) is drawn out from the wiring port 34b to the outside of the optical module 20c. When the connector is connected to the optical connector 40 of the jumper module 20b, the optical fiber 104 is branched into the number of branch optical fibers 114b of the optical fiber 114 that is an optical fiber for branch connection via the two optical modules 20b and 20c. In addition, the optical fiber connector 40 of the coupler module 20c is terminated so as to be connectable to the jumper optical fiber 100.
[0025]
As shown in FIGS. 6A to 6C, in the connection unit 83, the jumper optical fiber 100 drawn into the first wiring duct 109 from the jumper working unit 98 is pulled up from the first wiring duct 109. The optical modules 20b and 20c are detachably connected to the optical connector 40. An end portion (base end side optical fiber 114a) of the branch connection optical fiber 114 drawn from the coupler module 20c passes from the second wiring duct 110 to the first wiring duct 109 via the end portion on the jumper working portion 98 side. In the same manner as the jumper optical fiber 100, it is pulled up from the first wiring duct 109 and connected to the optical connector 40 of the target jumper module 20b. As a result, the target optical line terminated so that the connector can be connected by the optical connector 40 of the jumper module 20b is branched to, for example, 1: 4 via the coupler module 20c, and is separated by the optical connector 40 of the coupler module 20c. It is terminated so that the connector can be connected. The optical fiber 114 (base optical fiber 114b) drawn out from the coupler module 20c can be switched and connected to the optical connector 40 of each jumper module 20b housed in the connection unit 83, and the optical connector 40 of the jumper module 20b. Can be connected to the jumper optical fiber 100 by branching the desired optical fiber 104 drawn into the connection unit 83 into a plurality of lines. Can be terminated.
[0026]
According to the optical wiring board 70, the optical connector 40 of the optical module 20a accommodated in the termination unit 81 of the termination frame 82 and the optical connector of the jumper module 20b accommodated in the connection unit 83 of the connection frame 84. 40 or the optical connector 40 of the coupler module 20c through the jumper optical fiber 100, the optical fibers 90 and 104 drawn into the units 81 and 83 can be connected. The jumper optical fiber 100 can be switched and connected to the optical connectors 40 of the optical modules 20a, 20b, and 20c of the units 81 and 83, so that the optical fibers 90 and 104 can be switched and connected freely.
Moreover, the desired jumper module can be obtained by accommodating the coupler module 20c in the connection unit 83 and connecting the branch connection optical fiber 114 drawn from the coupler module 20c to the optical connector 40 of the jumper module 20b. An optical line on the 20b side, that is, a desired optical fiber 104 drawn into the connection unit 83 can be branched into a plurality of lines so that the connector can be easily connected to the jumper optical fiber 100.
[0027]
The jumper module 20b and the coupler module 20c connected to the jumper module 20b by the optical fiber 114 may be installed apart from each other in the connection unit 83, but in the connection unit 83, Since the optical module 20 can be installed as a pair by means of fin-like partition projections 111b and 112b projecting from the upper and lower rail members 111 and 112, the partition projections 111b and 112b can be used to It is also possible to install them in groups. In this case, the position of the pair of connected optical modules 20b and 20c can be easily understood, the optical modules 20b and 20c are replaced, and the jumper optical fiber 100 is switched and connected to the optical connector 40 of these optical modules 20b and 20c. The workability such as can be improved.
[0028]
Moreover, since the work surface side of each frame 82, 84 and each unit 81, 83 is aligned with one side of the optical wiring board 80, the switching of the jumper optical fiber 100 with respect to the optical modules 20a, 20b, 20c is performed. It is possible to efficiently perform operations such as connection and attachment / detachment of the base end side optical fiber 114a of the optical fiber 114 drawn from the coupler module 20c to the optical connector 40 of the jumper module 20b. Furthermore, in order to carry out the work inside the optical modules 20a, 20b, 20c, the optical modules 20a, 20b, 20c are drawn out from the respective frames 82, 84 and the units 81, 83 to the work surface side. Since the drawing direction is constant and the work space to be secured around the optical wiring board 80 only needs to be one side of the optical wiring board 80, the installation space of the optical wiring board 80 can be substantially reduced. There are also advantages.
[0029]
The termination module 20a, the jumper module 20b, and the coupler module 20c are different from each other only in the components housed therein, the number of branches of the optical fiber, the branching form, and the like. Cost reduction can be realized by sharing the main body 30. That is, the optical modules 20a, 20b, and 20c correspond to the number of branches of the optical fiber, the branching form, and the like by selectively storing a plurality of types of components in the same module body 30.
In the optical wiring system and the optical connection unit (optical distribution board 80) according to the present invention, by using the optical module 20 that selectively stores a plurality of types of components corresponding to the number of branches of the optical fiber, the branching form, and the like, The cost can be reduced by sharing the module main body 30, and the termination unit 81 and the connection unit 83 that store the optical module 20 are also low in design change corresponding to the optical module shape and the like. Cost can be reduced.
Hereinafter, this will be described in detail.
[0030]
First, the basic configuration of the optical module 20 will be described.
8A and 8B are diagrams showing the optical module 20 according to the present invention, where FIG. 8A is a front view and FIG. 8B is a side view as viewed from the optical connector 40 side. 9A is a front view showing the inside of one storage space 21 in the module main body 30 with the lid 31 (not shown) opened in FIG. 8B, and FIG. 9B is a holding piece. It is an expansion perspective view which shows 27 vicinity. 10A is a plan sectional view showing the optical module 20 (however, illustration of the curved wall 23, the holder portions 24, 25, etc. in the storage space 21 shown in FIG. 9 is omitted), FIG. FIG. 9B is a rear view showing the inside of the storage space 22 with the lid 22 on the opposite side facing FIG. 11A and 11B are views showing a state in which the lids 31 and 32 which are side wall portions on opposite sides of the module main body 30 are opened. FIG. 11A is a side view seen from the optical connector 40 side, and FIG. It is an enlarged view which shows the part 57 vicinity. FIG. 13 is a front view showing a state in which a lid 33 (hereinafter sometimes referred to as “rear lid 33”) which is a rear wall portion of the module body is opened.
[0031]
8 to 13, the optical module 20 has a configuration in which an optical connector 40 that is an optical connector adapter is attached to one side portion of a module main body 30 having an external thin plate case shape, and is housed in the module main body 30. The optical fiber F is terminated by the optical connector 40 so that the connector can be connected. The optical fiber F is wired so as to be drawn out of the optical module 20 through a wiring port 35 opened in the connector mounting wall 34 to which the optical connector 40 of the module body 30 is mounted. Here, the optical fiber F is a general term for optical fibers housed in the module main body 30. The optical fiber 41 (see FIG. 5), which is an optical fiber for branch connection in the termination module 20a, and the optical connector in the jumper module 20b. An optical fiber 104 (see FIG. 7) which is a terminated optical fiber terminated so as to be connectable by a connector 104a (optical connector plug), and an optical fiber 114 (see FIG. 7) which is an optical fiber for branch connection in the coupler module 20c. is there.
[0032]
The inside of the module main body 30 is partitioned by a partition material 36 that is a partition wall provided in the center in the thickness direction of the module main body 30, and two storage spaces 21 are provided on both sides thereof via the partition material 36. , 22 are defined. As shown in FIG. 10A, in the vicinity of the connector mounting wall 34, the partition material 36 is curved to expand the storage space 21, and the extended portion is opened to the connector mounting wall 34 of the module body 30. A part of the optical connector 40 fitted in the connector hole 34a is accommodated. A partition material 36 is provided between one storage space 22 (hereinafter sometimes referred to as “input-side storage space 22”) and the other storage space 21 (hereinafter sometimes referred to as “output-side storage space 21”). The optical fiber F communicated and wired to both the storage spaces 21 and 22 is inserted into the communication hole 36a.
In the configuration in which the inside of the module main body 30 is partitioned into two storage spaces 21 and 22 by the partition material 36, the work in each storage space 21 and 22 is stored in another storage space partitioned by the partition material 36. There is an advantage that it can be efficiently performed without affecting the wiring state of the optical fiber and the characteristics of optical components such as optical elements.
[0033]
As shown in FIGS. 9A, 10 </ b> A, and 10 </ b> B, in each of the storage spaces 21 and 22, a bending wall 23 for bending the optical fiber protrudes from the partition member 36.
Further, in the output side storage space 21, a pressing piece 27 for pressing the optical fiber F stored therein into the partitioning material 36 is projected from the partitioning material 36, the curved wall 23, and the like. As shown in FIG. 9 (b), the presser piece 27 protruding from the partition member 36 holds the optical fiber 41 between the part bent from the tip raised from the partition member 36 and the partition member 36. It comes to include. The presser piece 27 is formed not only in the output side storage space 21 but also in the input side storage space 22.
[0034]
The input-side storage space 22 communicates with the wiring port 35 of the connector mounting wall 34 through a through hole 35b defined by a partition wall 35a that partitions the output-side storage space 21. Therefore, the input-side storage space 22 The optical fiber wired so as to be drawn out from the optical module 20 to the outside of the optical module 20 is not exposed in the output-side storage space 21 and does not cause inconveniences such as entanglement with the optical fiber in the output-side storage space 21.
[0035]
The module main body 30 includes a partition member 36, a frame portion 51 including an outer peripheral wall 37 projecting in a rib shape on the outer peripheral portion of the partition member 36, and a lid member 52 attached to the outside of the frame portion 51. It is prepared for.
Here, as shown in FIGS. 14A and 14B and FIGS. 15A and 15B, the lid member 52 is a lid 31 provided to be openable and closable on both sides in the thickness direction of the module main body 30. , 32 and a lid 33 (rear lid), which is a rear wall portion of the module body provided at the rear end portion facing the optical connector 40 so as to be freely opened and closed, is mounted on the lower wall portion 56 of the bottom portion of the module body 30. The mounting plate portion 53 is connected to the mounting plate portion 53 via hinge portions 57 and 60 so as to be freely rotatable.
[0036]
The outer peripheral wall 37 constituting the frame portion 51 includes a connector mounting wall 34, an upper wall portion 55, and a lower wall portion 56, and has a frame shape that forms an outer peripheral portion excluding the rear cover 33 at the rear end portion of the module body 30. It has become. The upper wall portion 55 and the lower wall portion 56 are provided on the upper and lower sides (up and down in FIG. 9A, FIG. 10B, etc.) facing each other with the partition member 36, and the longitudinal direction of the elongated connector mounting wall 34 It extends from the end portion to the rear end portion of the module main body 30. Each of the outer peripheral walls 34, 55, and 56 has a rib shape protruding from the partition member 36 to both sides in the thickness direction of the partition member 36.
[0037]
FIGS. 14A and 14B and FIGS. 15A and 15B show the lid member 52.
As shown in FIGS. 14A and 14B and FIGS. 15A and 15B, the lid member 52 is an elongated plate-like attachment plate portion 53 that is attached to the lower wall portion 56 of the frame portion 51. A pair of lids 31 and 32 rotatably connected to both sides in the width direction perpendicular to the longitudinal direction of the mounting plate portion 53 via hinge portions 57, and one end portion in the longitudinal direction of the mounting plate portion 53, respectively. A rear lid 33 is rotatably connected via a hinge part 60.
[0038]
The lid member 52 is attached to the frame portion 51 by attaching the attachment plate portion 53 to the lower wall portion 56. The module main body 30 is assembled by attaching the attachment plate portion 53 to the lower wall portion 56 and attaching the lid member 52.
The lid member 52 is assembled to the frame portion 51 constituting the module main body 30 by engaging the attachment plate portion 53 with an engagement piece 56 b protruding from the lower surface 56 a side of the lower wall portion 56. 15A and 15B, specifically, the elongated holes 53a continuously provided at a plurality of locations (three locations in the figure) in the longitudinal direction of the mounting plate portion 53 are formed as engaging pieces of the lower wall portion 56. 56b, and by sliding the attachment plate portion 53 along the extending direction of the lower wall portion 56, the engagement portion 53b projecting like a flange on the inner surface of one end in the longitudinal direction of the elongated hole 53a. The engaging piece 56b is engaged. The engaging portion 53b on the mounting plate portion 53 side is fitted in a gap secured between the protruding portion 56c protruding from the protruding tip of the engaging piece 56b from the lower wall portion 56 and the lower wall portion 56. Therefore, the attachment plate portion 53 is stably attached to the lower wall portion 56 without wobbling. As a result, the attachment plate portion 53 is integrally attached to the lower wall portion 56 and attached so that the entire lid member 52 does not fall on the frame portion 51. By slidably moving the mounting plate 53 in the opposite direction with respect to the lower wall portion 56, the passage hole 53 c at the other end in the longitudinal direction of the elongated hole 53 a is positioned with respect to the engaging piece 56 b of the lower wall portion 56. The engagement portion 53b of the attachment plate portion 53 with respect to the engagement piece 56 of the lower wall portion 56 is released, and the engagement plate 56b is extracted from the elongated hole 3a so that the attachment plate portion is attached to the lower wall portion 56. 53 can be removed. Thereby, the lid member 52 can be easily separated from the module main body 30.
[0039]
The lids 31, 32, 33 can be opened and closed, and the lids 31, 32 and the rear lid 33 are attached to the frame portion 51 as shown in FIGS. The entire main body 30 is assembled in a case shape.
The lid 31 functions as a lid that opens and closes the output-side storage space 21, and the lid 32 functions as a lid that opens and closes the input-side storage space 22, and the storage spaces 21, 22 are operated by opening and closing these lids 31, 32. Can be opened and closed individually. Further, since the lids 31 and 32 constitute side wall portions themselves that close the storage spaces 21 and 22 and both side wall portions themselves in the thickness direction of the module main body 30, the storage spaces 21 are opened when the lids 31 and 32 are opened. , 22 are exposed.
[0040]
As shown in FIGS. 11A and 11B, each of the lids 31 and 32 has a latch 58 provided at an end portion farthest from the hinge portion 57 and a latch provided on the upper wall portion 55. By engaging the portion 59 (see FIGS. 9 and 13), the closed state (the phantom line in FIG. 11A) can be maintained. The latch 58 is detachable with respect to the locking portion 59, and the engagement with the locking portion 59 is released by operating the lever portion 58a exposed to the outside of the module main body 30 even in the closed state. It can be opened easily.
[0041]
As shown in FIG. 13, the rear lid 33 is rotatably connected to the attachment plate portion 53 via a hinge portion 60, and the module main body 30 rear end portion is rotated by the rotation about the hinge portion 60. Open and close. The rear lid 33 is in a closed state (a solid line in FIG. 9) by engaging a latch 61 provided at an end portion farthest from the hinge portion 60 with a locking portion 62 provided on the upper wall portion 55. , A virtual line in FIG. 13A can be maintained. The latch 61 is detachable with respect to the locking portion 62, and the engagement with the locking portion 62 is released by operating the lever portion 61a exposed to the outside of the module body 30 even in the closed state. It can be opened easily.
[0042]
In the present embodiment, the frame portion 51 and the lid member 52 constituting the module main body 30 are each integrally molded products made of a synthetic resin such as plastic. As shown in FIG. 11B, the hinge portion 57 is a portion where the thickness of the boundary between the mounting plate portion 53 and the lids 31 and 32 is reduced. A similar thin portion is also used for the hinge portion 60 of the rear lid 33.
In the present invention, the hinge portions 57 and 60 are not limited to the thin-walled portion of the resin module body 30, and for example, the other engagement with the shaft portion formed on one of the mounting plate portion 53 and the lids 31 and 32. Various configurations such as a configuration in which the portions are rotatably engaged and a configuration in which the attachment plate portion 53 and the lids 31 and 32 are connected via another component such as a pin can be employed. However, in terms of cost reduction, reduction in the number of parts, etc., it is advantageous to employ the lid member 52, which is integrally formed from synthetic resin, and the hinge portions 57, 60 made of thin portions thereof.
[0043]
According to this optical module 20, if both the lids 31 and 32 are opened, the storage spaces 21 and 22 on both sides can be opened at the same time, and the work can be carried out while comparing the storage spaces 21 and 22 on both sides. Therefore, workability can be improved. In addition, since the communication hole 36a of the partition member 36 is exposed on either side of each of the storage spaces 21 and 22, when performing operations involving insertion, removal (extraction) of the optical fiber F from the communication hole 36a, etc. Even so, workability can be improved.
The communication hole 36a formed at the end facing the rear lid 33 in the partition member 36 is configured such that one side is opened and closed by the rear lid 33. When the rear lid 33 is opened, the one side is opened. Therefore, by opening the rear lid 33 in addition to the both lids 31 and 32, the optical fiber F can be freely inserted into and removed from the communication hole 36a. Work involving the optical fiber F communicated can be performed more efficiently.
[0044]
Even if the lids 31, 32, 33 are opened, the lid member 52 is separated from the module body 30 and dropped unless the engagement state of the attachment plate portion 53 with respect to the engagement piece 56 a of the lower wall portion 56 is released. There is no worry. Since both the lids 31 and 32 and the rear lid 33 are one continuous component as the lid member 52, they are not separated even when opened, so that there is no inconvenience such as damage or loss due to dropping when opened. In addition, the lids 31, 32, and 33 can be easily opened and closed by operating the latches 58 and 61 with respect to the locking portions 59 and 62 on the frame 51 side, so that the working time required for opening and closing can be reduced. .
[0045]
As shown in FIGS. 8A, 8 </ b> B, 11 </ b> A, and 11 </ b> B, one side portion of the connector hole 34 a opened in the connector mounting wall 34 of the module body 30 is covered by one lid 31. The optical connector 40 can be opened and closed, and operations such as storage and removal of the optical connector 40 can be performed. Therefore, outside the module main body 30, the connector connection work of the optical fiber F to the optical connector 40, and the cleaning of the inside of the housing 40a (described later) of each optical connector 40 to which the optical fiber F is connected (for example, an internal split sleeve) There is also an advantage that cleaning can be performed efficiently.
[0046]
That is, the optical connector 40 is provided with a pair of mounting pieces 40b protruding on opposite sides of the sleeve-like housing 40a, and as shown in FIGS. 10A and 10B, in the vicinity of the connector hole 34a. The one mounting piece 40b is fitted into the groove-shaped connector positioning hole 36b formed in the partition member 36, and the other mounting piece 40b is fitted into the groove-shaped connector positioning hole 31a formed in the lid 31. It is designed to be stably mounted at a predetermined position. As shown in FIGS. 12A and 12B, the mounting pieces 40 b on both sides of the optical connector 40 are provided with holes 40 c, and the mounting pieces 40 b fitted into the connector positioning holes 36 b of the partition member 36. The optical connector 40 is stably supported by removably fitting the hole 40c into the fitting protrusion 36c projecting from the inner surface of the connector positioning hole 36b of the partition member 36. The connector positioning hole 31a on the lid 31 side does not have a fitting projection that fits into the hole 40c of the other mounting piece 40b of the optical connector 40. When the lid 31 is opened, the mounting piece 40b is pulled out from the connector positioning hole 31a. The optical connector 40 supported on the frame 51 (specifically, partition material 36) side is exposed.
The optical connector 40 can be easily removed from the module main body 30 simply by opening the cover 31 of the module main body 30, pulling the optical connector 40 strongly, and extracting the mounting piece 40b from the connector positioning hole 36b of the partition member 36. . Then, by pulling out the optical connector F1 at the end of the optical fiber F connected to the optical connector 40 from the optical connector 40 taken out from the module main body 30, a sufficient working space outside the module main body 30 can be secured. Thus, operations such as cleaning inside the optical connector 40 can be performed efficiently.
Needless to say, if the lid 31 is opened, the optical connector 40 can be easily mounted simply by pushing the fitting piece 40b into the connector positioning hole 36b of the partition member 36 and fitting it.
The formation position of the connector positioning hole on the frame part 51 side is not limited to the partition member 36, and may be anywhere near the connector mounting wall 34 of the frame part 51.
[0047]
The specific configuration of the optical module 20 is not limited to the above-described configuration, and various changes can be made.
For example, in the above-described embodiment, the entire side wall portions 31 and 32 and the entire rear wall portion 33 of the module main body 30 function as openable / closable lids, but the present invention is not limited to this. A configuration in which a part of each side wall part on both sides of the module main body and a part of the rear wall part function as an openable / closable lid can also be employed. Further, the lid for opening and closing the entire side wall part or one part and the lid for opening and closing the whole rear wall part or part are not limited to those constituting the lid member 52 described above, and a part of the module body is hinged. A structure that functions as a lid that is rotatably connected can also be employed. However, if the lid member 52 is removable from the module main body, it will not be an obstacle if it is detached from the module main body, and operations such as storing and taking out the optical fiber with respect to the storage spaces and communication holes on both sides via the partitioning material. In this respect, it is advantageous in that excellent workability can be obtained.
[0048]
The retaining part 38 shown in FIG. 8A is a member for retaining the optical fiber F inserted through the wiring port 35, and is housed so as not to move by being fitted into the wiring port 35. Since the wiring port 35 can be opened at one side by opening the lid 32 opposite to the lid 31, it is possible to easily perform operations such as storing, taking out, and replacing the retaining component 38 with respect to the wiring port 35. .
The retaining part 38 also corresponds to the optical part according to the present invention.
[0049]
Next, each of the optical modules 20a, 20b, and 20c will be specifically described.
[0050]
(Termination module 20a)
As shown in FIGS. 5, 16 (a), 16 (b), 17 (a) and 17 (b), the termination module 20 a houses the optical fiber 41 (see FIG. 5) in the module body 30. Is.
The optical fiber 41 includes, for example, a multi-core optical fiber portion 41a made of a multi-core optical fiber cord (here, a 4-core optical fiber cord) and the like from the terminal of the multi-core optical fiber portion 41a via the branch portion 43. And a plurality of branched optical fibers 41b branched into a plurality of branches, eight branches, and the like. Terminals branched from the multi-core optical fiber portions 41b of the branched optical fibers 41b are terminated so as to be connectable to the connectors by the optical connectors 42, respectively, from the inside of the module main body 30 (specifically, the output side storage space 21). A connector is connected to the optical connector 40, so that the n-core optical lines of the optical fibers 41 can be connected to the jumper optical fiber 100 in units of the branched optical fibers 41 b by the optical connectors 40. It is terminated. In addition, the input side storage space 22 stores the extra length of the branch optical fiber 41b in a curved manner.
As the branch optical fiber 41b, an optical fiber cord, an optical fiber core wire, or the like is employed. Further, the branch optical fiber 41b is not limited to a single core, and a multi-core optical fiber can be employed.
[0051]
Specifically, the optical module 20a shown in FIGS. 16A and 16B has an optical fiber 41 (multi-core optical fiber portion 41a) terminal that is a four-core optical fiber cord and a branching portion 43 (hereinafter, for convenience of explanation). 17 (a) and 17 (b), in which two optical fibers 41 branched into four single-core branched optical fibers 41b via “branching portion 43a” are housed. In the optical module 20a shown in FIG. 1, an optical fiber 41 (multi-core optical fiber portion 41a) terminal, which is an eight-core optical fiber cord, is connected via a branch portion 43 (hereinafter, sometimes referred to as “branch portion 43b” for convenience of explanation). One optical fiber 41 branched into eight single-core branched optical fibers 41b is accommodated.
[0052]
In the optical module 20a shown in FIGS. 16 (a) and 16 (b), a holder 28 is attached to a holder portion 26 provided in the input-side storage space 22, and a branching portion 43a of each optical fiber 41 is taken out from the holder 28. The clamp is held as possible. The holder part 26 functions as a holder attaching part to which the holder 28 is retrofitted.
In the optical module 20a shown in FIGS. 17A and 17B, the branch portion 43b of the optical fiber 41 is clamped and held directly on the holder portion 26 provided in the input-side storage space 22.
[0053]
As shown in FIGS. 16B and 17B, the holder portion 26 includes protrusions 26 a that protrude from the lower wall portion 56 of the module body 30 along two partitions 36. And a projection 26b projecting from the partition member 36 so as to ensure a gap of several millimeters between the two projections 26a and the lower wall portion 56. , 26b is clamped and held so that the branching portion 43b inserted between them can be taken out.
As shown in FIG. 18, the holder 28 is formed of a material having elasticity such as rubber, and is a plate-like member in which a plurality of holding grooves 28a are formed in parallel to accommodate and hold the branch portions 43a so that they can be taken out. It has become. The holder 28 can be easily fitted and fixed by pushing a fitting hole 28b provided in the center portion into the projection 26b protruding in a pin shape from the partition member 36. Since the holder 28 fitted to the protrusion 26b comes into contact with the partition member 36 and the lower wall portion 56, a stable attachment state without rattling or the like is obtained. The holder 28 can be pulled out from the protrusion 26b by pulling it strongly.
[0054]
By the way, the size of the branching portion 43 varies depending on the number of branches of the optical fiber 41 and the like. The branch part 43a illustrated in FIGS. 16 (a) and 16 (b) is smaller in size than the branch part 43b shown in FIGS. 17 (a) and 17 (b), and the holder part 26 is adapted to stably hold the branch part 43b. Then, although it cannot hold stably, it can hold stably with the holder 28 attached to the holder part 26. By selecting the holder 28 that matches the size of the branch portion 43 and attaching it to the holder portion 26, stable holding of the branch portions 43 of various sizes can be realized. Further, when the number of branch portions 43 stored in the module main body 30, specifically, the input side storage space 22, is larger, a holder 28 having a holding groove 28 a that can accommodate the number of branch portions 43 is employed. And by attaching to the holder 28, it can respond to the stable holding | maintenance of each branch part 43. FIG.
[0055]
(Jumper module 20b)
As shown in FIGS. 19A and 19B, the jumper module 20b accommodates the optical fiber 104 terminated so as to be connectable by an optical connector 104a (optical connector plug) into the module body 30 and accommodates it. The optical fiber 104 is connected to the optical connector 40 from the inside of the module main body 30 (specifically, the output side storage space 21), and the optical connector 40 is terminated so as to be connectable to the jumper optical fiber 100. Is.
19A and 19B, specifically, the extra length of a plurality of single-core optical fibers 104 made of an optical fiber cord or the like is stored in a curved manner in the input-side storage space 22, and a communication hole 36 is obtained. Each optical fiber 104 that is wired and stored in the output-side storage space 21 is connected to the optical connector 40. Since optical parts such as a branching portion are not provided in the middle of the optical fiber 104, it is not necessary to install a holder for holding the optical parts such as the holder 28 of the termination module 20a described above.
[0056]
(Coupler module 20c)
As shown in FIGS. 8A, 8B, 20A, 20B, 21A, and 21B, the coupler module 20c includes an optical fiber 114 that is an optical fiber for branch connection. It is housed in the module body 30.
The input-side storage space 22 of the module body 30 stores the excess length of the proximal-side optical fiber 114a in a curved manner, and the output-side storage space 21 includes an optical coupler 113 as an optical component (optical element), and the optical coupler 113. And a surplus length of the branched optical fiber 114b branched from the base end side optical fiber 114a.
[0057]
In the coupler module 20c shown in FIGS. 20 (a), 20 (b), 21 (a), and 21 (b), the extra length of the single-core proximal-side optical fiber 114a, which is an optical fiber cord, is provided in the input-side storage space 22. An optical fiber core wire 114d that is stored in a curved shape and is exposed by removing the protective tube of the proximal-end side optical fiber 114a in the vicinity of the optical coupler 113 is inserted into the communication hole 36a, and the both sides of the optical fiber cored wire 114d through the partition member 36 are inserted. The storage spaces 21 and 22 are communicated.
In the input-side storage space 22, a retaining member 114e fixed to the mouth from which the optical fiber core wire 114d is led out is held in a holder portion 29 provided in the vicinity of the communication hole 36a.
In the output-side storage space 21, the end of each branch optical fiber 114 b terminated so as to be connectable by an optical connector 114 c (optical connector plug) is connected to the optical connector 40 and connected to the jumper optical fiber 100. Terminated as possible.
The retaining member 114e also corresponds to the optical component according to the present invention.
[0058]
Specifically, the coupler module 20c shown in FIGS. 20A and 20B may be provided with a 1: 4 optical coupler 113 from the single-core base-end side optical fiber 114a (hereinafter, for convenience of explanation, the reference numeral 113a is sometimes attached). ), A single optical fiber 114 branched from four single-core branched optical fibers 114b is housed. Specifically, the coupler module 20c shown in FIGS. An optical fiber 114 is formed by branching eight single-core branched optical fibers 114b from a single-core proximal-side optical fiber 114a via a 1: 8 optical coupler 113 (for convenience of explanation, the reference numeral 113b may be attached hereinafter). One is stored.
In the coupler module 20c shown in FIGS. 20 (a) and 20 (b), the optical connector 40 corresponding to a total of four cores (single cores) is formed only in one of the connector holes 34a opened at two locations of the connector mounting wall 34. 4 optical connector adapters) are housed, and a plug 44 is fitted in the other connector hole 34a. However, the coupler module 20c that accommodates the optical fiber 114 with the optical coupler 113a interposed in the middle is not limited to the configuration shown in FIGS. 20A and 20B. For example, FIGS. The optical fiber 114 shown in b) is accommodated in two, and the optical connector 40 mounted in each of the two connector holes 34a may be used to realize a termination capable of connecting a total of eight optical lines. . In this case, the optical coupler 113 a of each optical fiber 114 can be stably held in the holder portion 24.
[0059]
The optical couplers 113a and 113b are selectively attached to the holder portions 24 and 25 disposed opposite to each other in the vertical direction of the output-side storage space 21 or a holder 25a (see FIG. 21A) that is detachably provided on one of the holder portions 25. By holding the clamp, the output side storage space 21 is stably stored.
That is, the holder parts 24 and 25 are both provided with protrusions projecting from the partition member 36 and the like (in the figure, the protrusions constituting the holder part 24 are denoted by reference numeral 24b, and the protrusions constituting the holder part 25 are denoted by reference numeral 25b. The holders 24 and 25 have different sizes of optical components (here, optical couplers) that can be stably clamped and held. In addition, a holder 25a that clamps and holds an optical component such as an optical coupler (optical element) so that it can be taken out is detachably attached to the lower holder portion 25 separately. The holder part 25 functions as a holder attaching part to which the holder 25a is retrofitted. The holder 25a is detachably attached by fitting between the plurality of protrusions 25b constituting the holder portion 25. Accordingly, by selecting the holder portions 24 and 25 and the holder 25a attached to the holder portion 25, stable clamp holding of various sizes of optical couplers can be realized.
Specifically, one optical coupler 113a is clamped and held by the upper holder portion 24 in FIGS. 20A, 20B, 21A, and 21B, and is branched compared to the optical coupler 113a. The optical coupler 113b having a large number and a large size is clamped and held by a holder 25a detachably attached to the lower holder portion 25.
Further, in the coupler module 20c shown in FIGS. 20 (a), 20 (b), 21 (a), and 21 (b), by using the curved wall 23 and the like, the extra optical fiber 114b is left in the output-side storage space 21. The length is stored curved.
[0060]
In the middle of the optical fiber 114, there is no branching portion 43 that branches the plurality of branching optical fibers 41 from the multi-core optical fiber portion 41a. Therefore, it is necessary to attach the holder 28 to the holder portion 26 of the input-side storage space 22 No.
On the contrary, in the termination module 20a and the jumper module 20b, the optical fiber 41, 104 accommodated in the module body 30 is not provided with the drawing part 38 or the optical coupler 113. The holder parts 24 and 25 of the output side storage space 21 may be left empty, and these holder parts 29, 24 and 25 can be used for routing the optical fibers 41 and 104.
[0061]
As described above, according to the optical module 20, the optical wiring system, and the optical wiring unit (optical wiring board 80) according to the present invention, the holder portions 26 and 29 of the input-side storage space 22 and the holder portions of the output-side storage space 21. 24, 25, holders 28, 25a that are detachably attached to the holder portions 26, 25 are selectively used to hold the optical parts that are the branching portion 43, the retaining member 114e, and the optical coupler 113, thereby allowing the module main body The optical modules 20a, 20b, and 20c that match the branching configuration, the number of branches, and the like of the optical fibers 41, 104, and 114 accommodated in the unit 30 can be assembled.
Further, by configuring the jumper module 20b and the coupler module 20c by sharing the same module body 30, the two types of optical modules 20b and 20c can be stored in the same connection unit 83, and the storage position in the connection unit 83 can be stored. However, it is not necessary to distinguish between the types of the optical modules 20b and 20c. Therefore, this makes it possible to reduce the cost of the connection unit 83 and to reduce the size and cost of the connection frame 84 on which the connection unit 83 is mounted.
The termination module 20a is also configured by using the same module body 30 as the jumper module 20b and the coupler module 20c, so that the manufacturing cost of the multiple types of optical modules 20 housed in the optical wiring board 80 can be reduced.
[0062]
According to the optical wiring system and the optical wiring unit 80, both the termination unit 81 and the connection unit 83 can be configured without storing the optical connection portion between the optical fibers in the optical modules 20a, 20b, and 20c. The termination unit 81 has a configuration in which the optical connection portion 94 between the optical fiber 90 drawn into the termination unit 81 and the optical fiber 41 on the termination module 20a side is collected and stored in the connection portion storage shelf 86. Yes, the connecting unit 83 connects the optical fiber 114 drawn from the coupler module 20b to the optical connector 40 of the jumper module 20b, so that the optical fiber 104 on the jumper module 20b side and the optical fiber 114 on the coupler module 20c side Therefore, the connection between the optical fibers 90 and 41 and the connection between the optical fibers 104 and 114 are performed without pulling out or opening the optical modules 20a, 20b, and 20c from the units 81 and 83. And workability can be improved.
[0063]
Further, in each of the optical modules 20a, 20b, and 20c, the optical fiber 41, 104, and the optical fiber 41, 104 that are wired so as to be drawn out from the input side storage space 22 through the wiring port 35 are also accommodated in the wiring port 35. Corresponding to the 114 types, the number of cores, the number of cores, etc., for example, the configurations shown in FIGS. 22A, 22B, 23A, and 23B are selectively used.
22 (a) and 22 (b) is a drawing component 38 (hereinafter, for convenience of description, a reference numeral 38a may be attached), in which a plurality of optical fiber holes 39a having different shapes and sizes are formed. 23 (a) and 23 (b) is a drawing part 38 (hereinafter, for convenience of description, a reference numeral 38b may be attached) in which a plurality of circular optical fiber holes 39b having substantially the same diameter are formed. It is. Each of the retaining parts 38 is formed of a material having elasticity such as rubber or synthetic resin, and the side openings 39c for fitting and fixing the optical fibers into and out of the optical fiber holes 39a and 39b, 39d is opened in a slit shape on the side surface.
In the termination module 20a, corresponding to the fact that the multi-core optical fiber portion 41a of the optical fiber 41 inserted through the wiring port 35 is a multi-core optical fiber such as a multi-core optical fiber cord, FIG. The retaining part 38a shown in b) is fitted and stored in the wiring port 35, and the multi-core optical fiber portion 41a is fitted and fixed in the optical fiber hole 39a. In the wiring port 35 of the jumper module 20b or the coupler module 20c, the retaining part 39a shown in FIGS. 23A and 23B is fitted and stored in the wiring port 35, and the optical fiber 104 inserted through the wiring port 35 or the like. A single-core optical fiber such as a single-core optical fiber cord, which is the proximal end side optical fiber 114a of the optical fiber 114, is fitted and fixed in the optical fiber hole 39b.
[0064]
Needless to say, the present invention is not limited to the above-described embodiment, and various modifications are possible.
For example, the number of optical fibers 41 and 114 accommodated in the termination module 20a and the coupler module 20c and the number of branches are not limited to those exemplified in the above-described embodiment, and can be changed as appropriate. Further, the number of optical fibers 104 accommodated in the jumper module 20b can be changed as appropriate.
The optical components housed in the module body are components that are interposed in the optical fiber or attached to the optical fiber, and are limited to the branch portion 43, the drawing component 38, the optical coupler 113, and the drawing member 114e. For example, various optical elements such as an optical filter provided in the middle of the optical fiber accommodated in the module main body can also be employed.
In the said embodiment, the connection unit 83 and the connection frame 84 which comprise the optical wiring board 80 also function as an optical wiring unit which concerns on this invention, respectively. The optical wiring unit according to the present invention is not limited to the optical wiring board as long as the optical module is accommodated, and various configurations such as an optical junction box can be employed.
The optical branching device accommodated in the optical module is not limited to the optical coupler, and various configurations such as a substrate-type optical waveguide can be adopted. Even in an optical module containing an optical branching device other than an optical coupler, the functions and operations described above for the “coupler module 20c” are the same, and “coupler module” can be read as “branching module”.
[0065]
【The invention's effect】
As described above, according to the present invention, the use of the holder portion provided in the module main body according to the type, shape, size, etc. of the optical component provided in the optical fiber housed in the module main body. By selecting whether or not the holder is attached to the holder portion, it is possible to obtain an optical module that can stably store the optical fiber. When storing a branched optical fiber in a plurality of branched optical fibers, the holder part is designed according to the type, shape, size, etc. of the optical components used corresponding to the branching form, the number of branches, etc. of the optical fiber. An optical module capable of stably storing the optical fiber can be obtained by selecting use, non-use, and whether or not the holder is attached to the holder portion.
For this reason, a plurality of types of optical modules can be configured by using the same module body, and the cost can be reduced. In addition, it is not necessary to divide the unit frame of the optical wiring unit that houses the optical module according to the type of the optical module, and the unit frame can be shared. Therefore, an excellent effect can be obtained that the cost can be reduced.
[Brief description of the drawings]
1A and 1B are diagrams showing an optical wiring board as an optical wiring unit according to the present invention, wherein FIG. 1A is a plan view and FIG. 1B is a front view.
2A and 2B are diagrams showing a termination unit mounted on the optical wiring board of FIG. 1, wherein FIG. 2A is a plan view, FIG. 2B is a front view, and FIG. 2C is a side view.
3 is a front view showing a unit mounting frame provided on the termination frame constituting the optical wiring board of FIG. 1. FIG.
4 is an exploded perspective view showing a structure for attaching a termination unit to the unit mounting frame of FIG. 3; FIG.
5 is an optical wiring diagram showing a connection state of optical fibers in the termination unit of FIG. 2; FIG.
6A and 6B are diagrams showing a connection unit mounted on the optical wiring board of FIG. 1, wherein FIG. 6A is a plan view, FIG. 6B is a front view, and FIG. 6C is a side view.
7 is an optical wiring diagram showing a connection state of optical fibers in the connection unit of FIG. 6, (a) is an optical wiring diagram relating to a jumper module, and (b) is a case where a jumper module and a coupler module are used. The optical wiring diagram of is shown.
8A and 8B are diagrams showing an optical module according to the present invention, in which FIG. 8A is a front view and FIG. 8B is a side view as viewed from the optical connector 40 side.
9A is a front view showing a state in which a lid, which is a side wall portion of the module body, is removed in FIG. 8B, and FIG. 9B is an enlarged perspective view showing the vicinity of a presser piece.
10A is a plan sectional view showing the optical module, and FIG. 10B is a rear view showing the internal structure of the storage space on the opposite side facing FIG. 9A.
11A and 11B are views showing a state in which the lids that are side wall portions on both sides of the module main body are opened, in which FIG. 11A is a side view seen from the optical connector side, and FIG. FIG.
12A is a perspective view showing an optical connector adapter mounted on the module main body of the optical module according to the present invention, and FIG. 12B is a diagram illustrating a mounting piece on both sides of the optical connector adapter of FIG. 5 is a cross-sectional plan view showing a fitting state of the hole, a partition member on the module body side, and a fitting protrusion formed on one lid.
FIG. 13 is a front view showing a state where a lid, which is a rear wall portion of the module body, is opened.
14A and 14B are views showing a cover member constituting the module main body, wherein FIG. 14A is a plan view showing a developed state, and FIG. 14B is a side view of FIG. 14A.
FIGS. 15A and 15B are diagrams showing a lid member constituting the module main body, wherein FIG. 15A is a front sectional view showing a developed state, and FIG. 15B is a bottom view showing a long hole opened in a mounting plate portion; .
FIGS. 16A and 16B are diagrams showing a termination module which is a configuration example of an optical module according to the present invention, in which FIG. 16A is a front view showing an output side storage space, and FIG. 16B is a rear view with respect to FIG. The input side storage space is shown.
FIGS. 17A and 17B are diagrams showing another configuration example of the termination module, which is a configuration example of the optical module according to the present invention, in which FIG. 17A is a front view showing an output-side storage space, and FIG. FIG.
18A and 18B are diagrams showing a holder for holding a branch portion of an optical fiber housed in the termination module shown in FIGS. 16 and 17, wherein FIG. 18A is a perspective view, FIG. 18B is a plan view, and FIG. Is a side view.
19A and 19B are diagrams showing a jumper module which is a configuration example of an optical module according to the present invention, in which FIG. 19A is a front view showing an output side storage space, and FIG. 19B is a rear view with respect to FIG. The side storage space is shown.
FIGS. 20A and 20B are diagrams showing a coupler module which is a configuration example of an optical module according to the present invention, in which FIG. 20A is a front view showing an output-side storage space, and FIG. 20B is a rear view with respect to FIG. The side storage space is shown.
FIG. 21 is a diagram showing another configuration example of a coupler module which is a configuration example of an optical module according to the present invention, in which (a) is a front view showing an output-side storage space, and (b) is a diagram corresponding to (a). It is a rear view and shows the input side storage space.
FIGS. 22A and 22B are diagrams showing an example of a retaining part that is fitted into and stored in the wiring port of the optical module according to the present invention, where FIG. 22A is a front view and FIG. 22B is a side view.
FIGS. 23A and 23B are diagrams showing another example of the retaining component that is fitted into the wiring port of the optical module according to the present invention, wherein FIG. 23A is a front view, and FIG. 23B is a side view.
FIGS. 24A and 24B are diagrams showing an optical wiring board as an optical wiring unit of a conventional example, where FIG. 24A is a front view and FIG. 24B is a side view.
25A and 25B are diagrams showing an optical module of a conventional example, where FIG. 25A is a plan view, FIG. 25B is a front view, and FIG. 25C is a side view as viewed from the optical connector side.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 20 ... Optical module, 20a ... Optical module (termination module), 20b ... Optical module (jumper module), 20c ... Optical module (coupler module), 24 ... Holder part, 25 ... Holder part, Holder attachment part, 25a ... Holder , 26 ... holder part, holder attaching part, 28 ... holder, 29 ... holder part, 30 ... module main body, 34 ... connector mounting wall, 35 ... wiring port, 38 ... optical component (clamping part), 40 ... optical connector (optical Connector adapter), 41 ... optical fiber, 43 ... optical component (branch), 80 ... optical wiring unit, 83 ... optical wiring unit (connection unit), 84 ... optical wiring unit (connection frame), 85 ... unit frame, DESCRIPTION OF SYMBOLS 104 ... Optical fiber, 108 ... Unit frame, 113 ... Optical component (optical coupler), 114 ... Optical fiber, 114b ... Branch optical fiber Bar, 114e ... optical components (anchor member).

Claims (3)

In an optical module in which an optical connector (40) that terminates the optical fiber so that it can be connected to a connector is attached to one side of a case-shaped module body (30) that houses the optical fiber (41, 104, 114) ,
In said module body, branch part provided in the middle of the optical fiber, parts for anchoring, and at least is one optical component of such an optical device such as an optical coupler a (38,43,113,114e) Supporting holder parts (26, 29, 24, 25) are provided,
The inside of the module body is partitioned in a thickness direction by a partition member (36), and is defined into an output side storage space (21) and an input side storage space (22) through the partition member,
The optical fiber is introduced into the output side storage space through the input side storage space and terminated by the optical connector,
The holder portion is provided in each of the output-side storage space and the input-side storage space, and in each storage space, at least one of the holder portions is retrofitted with a holder (28, 25a) that supports the optical component. An optical module (20, 20a, 20b, 20c) characterized in that it can function as a possible holder mounting part (26, 25). Corresponding to the number of branches of the optical fiber in the module body of the optical module according to claim 1, the branch form, etc., selectively using the holder part in the module body or the holder attached to the holder mounting part, An optical wiring system characterized in that the optical component is held. A unit frame (108) for storing a plurality of optical modules according to claim 1 side by side, wherein the optical module has a connector mounting wall (34) provided with the optical connector in the module body. A plurality of side-by-side housings are arranged side by side so as to be exposed to the work surface provided on one side of the unit frame, and the wiring ports (opened in the connector mounting wall of the optical module housing the optical splitter (113)) 35), an optical fiber in which the branched optical fiber (114b) branched into a plurality by the optical branching unit is terminated so as to be connectable by the optical connector is drawn, and the optical fiber drawn from the wiring port is drawn Connector connection from the work surface side to the optical connector of another optical module in the unit frame. Optical wiring unit which is characterized that it is possible (80,83,84).

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