JP2957558B2 - Optical fiber cable main wiring 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 fiber cable main wiring frame or an optical line aggregation frame for branching and connecting a multi-core optical fiber cable to a transmission device via an intra-office cable.

[0002]

2. Description of the Related Art A conventional optical fiber cable main wiring frame is
For example, the type shown in FIG. 10 is common. FIG.
Reference numeral 0 is a conceptual diagram showing a conventional optical fiber cable main wiring rack. In the optical fiber cable main wiring frame shown in FIG. 10, the multi-core optical cable 46 in which the tape cores introduced from the outside are assembled is connected to the tape core side of the optical fiber tape cord shown in FIG. Spliced.

In FIG. 10, reference numeral 31 denotes a connector connection unit; 38, a fusion tray; 39, a connector adapter;
0 is a jumper connection between frames, 41 is jumper ring, 42
Is a jumper cable fixing tool, 43 is a jumper cable fixing panel, 44 is a jumper panel, 45 is a tape code (FO code), 46 is a multi-core optical cable, and 47 is a fusion processing unit.

FIG. 11 is a schematic view showing the appearance of a tape cord connected to the connector connection unit 31 in the conventional optical fiber cable main wiring frame of FIG. In FIG. 11, 32 is an optical fiber tape cord, 33 is a single-core optical connector, 34 is an optical fiber single-core cord, and 35 is a branch portion. That is, tape cord of the optical fiber ribbon cord 32, as shown in FIG. 10, is fusion-spliced in the fusion tray 38, a single-fiber optical connectors at the other end (e.g., FC or SC
The type connector 33 is joined to the connector adapter 39. The connector connection unit 31 shown in FIG. 10 collectively stores the extra lengths of the branch portion 35 and the optical fiber single-core cord 34 in a coil shape.

[0005] As shown in FIG. 10, the single-core optical connector 33 is guided to the connector connection unit 31 and connected to the connector adapter 39. Further, a jumper cord 48 wired from a transmission device (not shown) is introduced through the jumper opening 40 between the frames, and is connected to the connector adapter 39 to which the corresponding multi-core cable is connected.
Connectors are attached to both ends of the jumper cord 48 in advance, and the extra length of the cord is wound inside the connector connection unit 31 or around the cylindrical portion of the jumper panel 44.

[0006]

(1) In the conventional method,
A large space is required for separately storing the extra lengths of the tape cords and the jumper cords, and since the extra length storage portions are dispersed, the wiring is complicated and is not suitable for high-density mounting. (2) Wiring of jumper cords becomes messy, and when switching an arbitrary connector, it takes time to perform the task of recognizing the corresponding code and performing switching such as changing the route of the code. (3) When removing jumper cables that are no longer needed, when removing the jumper cables, the jumper cords are complicated, and the jumper cables cannot be tangled and removed. In addition, if it is forcibly removed, another bend may occur in the other jumper cable, causing an inconvenience such as causing damage or increased loss to the optical fiber.

(4) Normally, the jumper code is an optical fiber.
Since the reinforcing layer and the coating are applied on the 9-core nylon fiber, it is difficult to detect with a fiber-optic core detector. The optical fiber core contrast device referred to herein is an ID tester, which is a device that inputs light of a special wavelength into an optical fiber, bends the optical fiber with the ID tester, and detects leaked light. Therefore, in this jumper code, the coating film is thick and the leakage light is small, so that the detection is difficult.

[0008]

As a result of various studies on the above-mentioned problems, the present inventor has found that the extra length of the connector connection part and the external multi-core optical cable and the extra length of the jumper cord are stored in a plurality of extra length storage cards. As a result, the present inventors have found that high-density mounting can be performed, and that the switching operation can be easily performed in a short time, thereby completing the present invention.

That is, the present invention provides: (A) a frame for branching and connecting an optical fiber cable;
Main unit and (B) optical fiber and jumper on multi-core optical cable side
Both optical fibers connected to the optical fiber connection on the cord side
Multiple extra lengths for storing the extra length of fiber in connection units
Storage card and (C) jumper from multiple extra storage cards.
Place the optical fiber on the pacord side, and
ByguideAnd an extra-length storage card
(B) and the substrate (C) are optical fibers located close to each other.
Provide a cable main wiring frame. Also, multiple slacks
Storage cards (B) are stacked horizontally so that they can be
And the jumper guide is visible
And the board (C) is attached to the extra length storage card.
Placed in front of (B) or forwardInclinationAre arranged as possible
It is characterized by Also, multiple extra storage cards
(B) provides that it is held rotatably with respect to the rotation axis
I do. Also,  ContactThe connecting part is composed of connectors and both connected
The optical fiber of one of the other multiple storage card
Has a surplus length that can be switched and connected to the connector of the connection part of
Has features. Also,  The jumper fiber fixing guide has a plurality of flanges,
TsumaFrom the jumper guideOptical fiber on the jumper cord side
Has a gap for grippingWhat is,And substrate (C)
Jumper fiber fixing guide and jumper
Guides are arrangedIt is characterized by points. Also,

[0010]  Configure the jumper fiber fixing guide
The two guide members are odd-numbered on one side with respect to the center axis.
The flange has an even-numbered flange on the opposite side, and is fixed to a jumper fiber.
One of the guides rotates 180 degrees about the center axis.
The two guide members above
The feature is that it has odd-numbered and even-numbered collars on both sides.
Have. Also,  The optical fiber on the jumper cord side has multiple optical fibers.
Guide fixed by jumper fiber fixing guide for each group
Between the extra length storage card unit (B) and the wiring frame body (A).
The feature is that it is held in a state where it hangs individually
Have. Also,  The optical fiber on the jumper cord side must be
The wiring frame body has a retaining portion, and
It is characterized by having a Pacord fixing part. Also,  The jumper cord fixing part is the same as the jumper cord retention part.
It is characterized in that it has a recess that complementarily fits. Ma
Was. (Ten)RecessIs on the reinforcement tube holder
The holder is rotatably held with respect to the wiring frame body.
The feature is that it is possessed. Also, (11) The optical fiber is covered with a protective tube.
Probe detects leaked light from optical fiber with fiber optic comparator
It is characterized by having a degree of transparency as much as possible. Also,(12 ) The protective tube has an outer diameter of 1.4 mm or less.
Characteristic of using polyester elastomer as material
Having.

Hereinafter, the present invention will be described in detail. (1) Configuration of Optical Fiber Cable Main Wiring Rack The optical fiber cable main wiring rack of the present invention basically includes (A) a multi-core optical cable 16, an intra-office cable (multi-core optical cable) as shown in FIGS. (B) Main wiring rack 11 for branching / connecting 19; (B) Extra length of both optical fibers connected to connection portion (MT connector) 15 between the optical fiber on the multi-core optical cable side and the optical fiber on the jumper cord side. A spare length storage card unit 12 composed of a plurality of extra length storage cards 3 'for storing portions in connection unit units; (C) Arranging optical fibers on the jumper code 7' side from the plurality of extra length storage cards 3 '. and, and a 'substrate 8 that guides a' predetermined jumper guide 6, and as shown in FIG. 3, slack storage card 3 '(B) and the substrate 8' (C) is, FIG 3- ( As shown in (a) and (b), close proximity to improve workability, etc. It is location (claim 1). Then, as shown in FIGS. 3A and 3B, a jumper fiber fixing guide 4 'and a jumper guide 6' are arranged and fixed on the substrate 8 ', and shown in FIG. As described above, the jumper code 7 ′ is fixed by the jumper code fixing unit 13. FIG. 1 is a schematic diagram showing a basic configuration of an optical fiber cable main wiring rack of the present invention. In FIG. 1, 11 is a main wiring frame (frame main body), 12 is a surplus storage card unit, 1
3 is a jumper cord fixing part (see FIG. 5), 14 is a fixing part holder (corresponding to the auxiliary pipe holder 20 'in FIG. 5), and 15 is M
T connector (see FIG. 4), 16 is a multi-core optical cable, 5 is a branch portion (see FIG. 2), 7 is an SC connector on the jumper cord side (see FIG. 2), 19 is an intra-office cable (using a multi-core optical cable). is there. FIG. 9 is a schematic view showing another main wiring rack. In FIG. 9, 13 is a jumper code fixing part,
17 is a frame wall, 31 ′ is a cable termination (see FIG. 8),
Reference numeral 12 denotes a surplus storage card unit.

(2) The multi-core optical cable 16 in FIG. 1 is terminated as shown in FIG. FIG. 8 is a schematic diagram showing the appearance of a terminated optical cable constituting a multi-core optical cable. In FIG. 8, 16 is a multi-core optical cable, 31 'is a cable termination, 32' is a spiral tube, 33 'is a color tube, 34' is a protection tube, 35 'is a connector number, and 15 is an MT connector (connection). Part). That is, in FIG. 8, the cable core (not shown) is covered with a cylindrical polyester protective tube 34 ′ having a standard outer diameter of 1.4 mm or less and an inner diameter of 0.75 mm or more. The MT connector 15 is attached (claim 12 ).

The protective tube made of polyester elastomer is thin and durable, and has a property of easily transmitting light. This polyester-based elastomer has a characteristic that it is easy to bend or hardly bend, and is easily stored or taken out. Therefore, the polyester-based elastomer can be made into a thin film, and the leaked light can be easily detected and identified by a cord detector or the like (Claim 11 ). Examples of the polyester elastomer material include a polyester block copolymer such as Hytrel.

(3) The jumper code (FO code) has, for example, the shape shown in FIG. The jumper cord is provided with an anchoring portion 3 (claim 8 ), and a tape-shaped core wire (not shown) is made of a polyester elastomer having a cylindrical shape having a standard outer diameter of 1.4 mm or less and an inner diameter of 0.75 mm or more. The tube 1 is covered, and the MT connector 15 is attached to the tip.

FIG. 2 is a schematic diagram showing an example of a jumper cord mounted on a jumper cord fixing portion in the main wiring frame of FIG. In FIG. 2, 1 is a protective tube, 15 is an MT connector, 3 is a retaining part, 4 is a tape cord, 5 is a branch part,
Reference numeral 6 denotes a single-core optical fiber cord, and reference numeral 7 denotes an SC connector.
Here, the MT connector 15 is a collective connector of 2 to 4 optical fibers, the SC connector 7 is a connector for a single optical fiber, and the retaining portion 3 holds a tension member of the tape cord 4, which will be described later. The jumper cord fixing portion 13 shown in FIGS. 5 and 6 is engaged with and fixed to the concave portion 21 'in the auxiliary pipe holder 20' (claim 8 ).

(4) FIG. 3 is a schematic diagram showing details of the extra length storage card unit shown in FIG. 1, (a) is a top view showing the extra length storage state, and (b) is an extra length. FIG. 4 is a front view showing a cross section of the storage card unit, and FIG. In FIG. 3, 1 'is an extra-length storage case, 2' is a fixed base plate, 3 'is an extra-length storage card, 4' is a jumper fiber fixing guide, 5 'is an extra-length storage card rotating shaft, and 6'
Is a jumper guide, 7 'is a jumper cord, and 8' is a frame wall. In FIG. 3 (b), each extra length storage case 1 'is attached in multiple stages at right angles to the fixed base plate 2', and extra length storage cards 3 'are laterally stacked so that individual extra storage is possible. It is arranged in the case 1 '(claim 2).
As shown in FIG. 3 (b), the jumper cord fixing guide 4 ′ and the jumper guide 6 ′ (FIG. 3- (b) are hidden behind and cannot be seen, but in FIG. Is fixed to the substrate 8 '. Moreover, as shown in FIG. 3A, the jumper guide 6 'is fixed to the substrate 8' in a state where the guide state is visible (claim 2), and is fixed to the jumper fiber fixing guide 4 '. The jumper cord 7 ′ (claim 7 ) is hooked on or passed through the jumper guide 6 ′ and then introduced into the extra length storage card 3 ′. In this case, as shown in Fig.
Fiber fixing guide 4 'is該余length storage card 3' located in front of, or are tiltably arranged positioned forward (claim 2). The plurality of extra-length storage cards 3 'are rotatably mounted around the extra-length storage card rotating shaft 5' (see FIG. 4) in the extra-length storage case 1 '(claim 3 ).

(5) To store the extra length, the extra length storage card 3 'is rotated to the front, and the lid 10' is opened as shown in FIG. FIGS. 4A and 4B are schematic diagrams showing an example of the structure of the extra-length storage card. FIG. 4A shows a state when the lid is opened, and FIG. In FIG. 4, 3 'is an extra storage card,
5 'is the extra storage card rotation axis, 7' is the jumper code,
10 'is a lid, 11' is a hinge, 12 'is a connector fixing portion, 13' is a multi-core optical cable entrance / exit, 16 is a multi-core optical cable, 15 is an MT connector (on the multi-core optical cable side), 1
5 ′ is an MT connector on the jumper code side.

(6) As shown in FIG. 1, the jumper cord fixing part 13 is attached to the upper part of the main wiring frame 11, and as shown in FIG.
Is composed of a holder receiver 24 'and a reinforcing pipe holder 20'. FIG. 5 is a schematic view showing the appearance of a holder receiver which constitutes a part of the jumper cord fixing portion of FIG. FIG.
FIG. 2 is a schematic diagram showing a reinforcing pipe holder constituting another part of the jumper cord fixing part of FIG. 1.

In FIG. 5, 13 is a jumper cord fixing portion, 17 is a frame wall, 20 'is a reinforcing pipe holder (corresponding to the fixing portion holder 14 in FIG. 1), 23' is a support plate, and 24 'is a holder receiver. 25 'is a support bar and 9' is a stopper. In FIG. 6, reference numeral 20 'denotes a reinforcing pipe holder, 21' denotes a concave portion (opening), and 22 'denotes a hole through which a support rod 25' (see FIG. 5) passes. As shown in FIG. 5, in the present invention,
The jumper cord fixing portion 13 has a concave portion 21 ′ which complementarily fits the jumper cord retaining portion 3 (FIG. 2), and the concave portion is provided on a holder receiver 24 ′ constituting the jumper cord fixing portion 13. It is formed (claims 9 and 10 ). For example,
As shown in FIG. 5, the jumper cord is provided with the convex retaining portion 3 shown in FIG.
6 is inserted and fixed from the opening (recess) 21 'of the reinforcing tube holder 20' on the holder receiver 24 'of the jumper cord fixing portion 13 of FIG. As shown in FIG. 5- (A), the fixed part holder 14 composed of the auxiliary pipe holder 20 ′ is connected to the main wiring frame (FIG. 1).
11) is held rotatably with respect to the frame wall 17 of the eleventh embodiment (Claim 10 ). The reinforcing pipe holder 20 'is passed through the support rod 25' of the holder receiver 24 'and fixed by holes 22' on both sides shown in FIG.

(7) As shown in FIG. 1, the optical fiber on the jumper cord side is fixedly guided by a jumper fiber fixing guide 4 'for each of a plurality of optical fiber groups, and a wiring portion in the rack on the jumper cord side. Are individually and naturally suspended in a section from the upper part of the main wiring frame 11 to the extra-length storage card unit 12 (Claim 7 ). FIG.
As shown in the figure, in the wiring section of the storage card unit, the jumper cord 7 'is first fixed by the jumper fiber fixing guide 4' (claim 7 ). The jumper fiber fixing guide 4 ′ is provided so that the protective tube of the jumper cord (see FIG. 2) can be appropriately deformed so as to have a necessary holding force and be easily detached as necessary.
As shown in (a) to (c), a plurality of collars 26 'on both sides,
27 '(claim 5 ).

FIG. 7 is a schematic diagram showing the structure of a jumper fiber fixing guide corresponding to the extra-length storage card unit of FIG. In FIG. 7, 26 'is an even flange, 27' is an odd flange, 28 'is a tape fiber protection tube, and 29' is a gap. The jumper fiber fixing guide is formed of a plastic material, and has an even number of flanges 26 'having a gap 29' on one side, as shown in FIG.
On the opposite side, a part having an odd-numbered flange 27 'having a gap 29', a guide member A, and a guide member B, one of which is rotated by 180 degrees as shown in FIG.
Are overlapped with each other as shown in FIG. 7- (c) to form a completed jumper fiber fixing guide (claim 6 ).

As shown in FIG. 7- (c), the tape fiber protection tube 28 'is provided with a flange 2 having a gap 29'.
As shown in FIG. 7- (D), it is fitted between 6 ′ and 27 ′ to have a holding force and is gripped. As shown in FIG. 3- (A), the jumper cord is wired such that the jumper cord 7 ′ is first held by the jumper fiber fixing guide 4 ′ (claim 7 ), and passes through the jumper guide 6 ′. 'Introduced. In FIG. 3, the positional relationship between the jumper fiber fixing guide 4 'and the extra length storage card 3' is such that the jumper fiber fixing guide 4 'farthest from the extra length storage card rotating shaft 5' and the portion farthest from the jumper cord introduction part. Are stored in such a manner that the extra length storage cards 3 'are combined. To facilitate the task of housing the 'jumper cord 7' slack storage card 3, as shown in FIG. 3 (b), rotates around the slack storage card rotary shaft 5 '(claim 3 ), And the board 8 'is an extra-length storage card.
It is held so as to be tiltable with respect to 3 '(claim 2 ).

(8) In FIG. 4, the MT on the multi-core cable side
Connector 15 (see FIG. 1) and jumper cord 7 'side M
The T connector 15 'is connected by a known method, and is stored at a predetermined position of the connector fixing portion 12' in the extra length storage card 3 '. Further, the extra length on the multi-core cable side and the extra length on the jumper side are all stored in the same extra length storage card. That is, the connection unit is composed of a connector, for example, the MT connector 15 on the multi-core cable side and the MT connector 15 ′ on the jumper cord side, and both connected optical fibers are included in other plural extra length storage cards. one having extra length connector and switchable connection of the connection portion of (claim 4).

[0024]

The optical fiber cable main wiring frame of the present invention is
A frame body for branching and connecting the optical fiber cable;
The extra length of both optical fibers is stored in connection units.
A plurality of slack storage card, an optical fiber jumper cable end from the plurality of slack storage card arranged, and a substrate to be guided by a predetermined jumper guide and slack storage card and the substrate are close Because of the arrangement, the overall configuration such as extra-length storage and optical fiber wiring is simplified as compared with the conventional method, wiring can be performed neatly, high-density mounting is possible, and extra-length storage is possible. The configuration is such that the connection can be performed individually for each connection portion, and there is an advantage that the work can be performed without any adverse effect on the other extra length storage portions and the workability is improved (claim 1). The storage card unit is arranged side by side so that the plurality of extra length storage cards can be individually taken out, and the jumper guide is fixed to the substrate in a state where the guide state can be seen, and the substrate is located in front of the extra length storage card. because placement or is tiltably arranged forward, easy to recognize the relationship between the excess length and the optical fiber wiring of the optical fiber as compared with the conventional method, there is likely a further advantage to work such as a wiring switch (according Item 2).

Since the storage card unit is provided with a plurality of extra-length storage cards rotatably mounted around the rotation axis, any optical fiber connection portion can be easily connected to another core wire as compared with the conventional method. There is an advantage that the storage and the switching operation can be performed without any adverse effect (claim 3 ). Substrate, because it is held slack storage card tiltably to conventional methods less storage space than the working time may easily benefit work in an inclined (claim 2).

The connecting portion is formed of a connector, and the two connected optical fibers have a surplus length that can be switchably connected to the connector of the connecting portion in one of the other extra length storage cards. In addition, it is possible to switch over the optical fiber of the storage card of any extra length compared to the conventional method, and there is an advantage that the replacement of the optical fiber can be eliminated (Claim 4 ). The jumper fiber fixing guide is fixed to the substrate and has a plurality of flanges, and has a space between the flanges for holding the optical fiber on the jumper cord side from the jumper guide. or jumper cord can be held at a constant pressing force, there is an advantage that can hold a large number of jumper cord compact (claim 5).

The two guide members constituting the jumper fiber fixing guide have odd-numbered flanges on one side and an even-numbered flange on the other side with respect to the center axis, and one of the jumper cord fixing guides has the center axis. On the other hand, since the two guide members are overlapped in a state of being rotated by 180 degrees, an odd-numbered flange and an even-numbered flange are provided on both sides, so that a small-sized guide member having a plurality of flanges on both sides can be obtained. (Claim 6 ). Conventionally, the optical fibers on the jumper cord side are guided and fixed by a jumper fiber fixing guide for each of a plurality of optical fiber groups, and are held individually hanging between the extra storage card unit and the wiring frame main body. The wires fixed for each group are compact compared to the method, but they are easily entangled, but the hanging wires have the advantage that they can be taken out without entanglement of any jumper fiber (Claim 7 ).

Since the optical fiber on the jumper cord side has a protective tube and a retaining portion, and the wiring frame main body has a jumper cord fixing portion for fixing the retaining portion, it is easier to fix and remove the jumper fiber than the conventional method. And it is easy to handle (claim 8 ). (10) Since the jumper cord fixing portion has a concave portion to be fitted complementarily to the jumper cord retaining portion, the cord fixing portion has an advantage that the retaining portion can be reduced in size (claim 9 ).

(11) The concave portion of the jumper cord fixing portion is formed on the reinforcing pipe holder, and the holder is rotatably held with respect to the wiring frame main body. Therefore, the holder receiver of the jumper fixing portion is rotated in the horizontal direction. can, by escape rotate the unmatched holder receiving any back jumpers, to be raised to rack the wiring density, there is an advantage that it is possible to easily remove the anchor portion of any jumper fiber (claim 1
0 ). (12) The optical fiber is covered with a protective tube, and the protective tube has a degree of transparency so that light leaking from the optical fiber can be detected by a fiber optic comparator. There is the advantage that the control is assured (claim 11 ). (13) Since the protective tube has an outer diameter of 1.4 mm or less and is made of a polyester-based elastomer, it has the advantages of good light passage, small diameter, and good handleability (Claim 12 ).

[0030]

[Effect of the Invention] High-density mounting By storing all the extra lengths on the multi-core cable side and the jumper cord side in the extra length card, the conventional extra length processing unit becomes unnecessary, and the space is utilized to achieve high density. Can be implemented. Shortening of switching time The fiber tape with the protective tube hangs naturally from each jumper cord fixing part to the extra length storage card unit, and in the extra length storage card unit, it is aligned and held by the jumper fiber fixing guide, and the jumper Since the relationship between the fiber fixing guide and the extra length storage card is clarified, an arbitrary core wire to be switched can be easily taken out. Furthermore, the switching operation can be performed in a short time of 30 ms or less by using a known MT connector switching tool. Therefore, M
There is an advantage that the T connector can be switched.

Ease of removing unnecessary jumper cables The jumper tape with the protective tube naturally hangs from each jumper cord fixing portion side to the extra length storage card unit, and the jumper tape is inside the extra length storage card unit. Since the fibers are aligned and held by the fiber fixing guide and the relationship between the jumper fiber fixing guide and the extra length storage card is clarified, an arbitrary core wire to be removed can be easily taken out. In addition, since the holder holder of the jumper cord fixing part rotates in the horizontal direction, the work base can be made near any jumper cord by rotating and missing the holder holder that is not applicable to any jumper cord at any depth. Jumper cord can be removed. Easy to detect with optical fiber core detector The jumper cord wiring inside the frame is a polyester elastomer type with a 0.25 UV core tape and a cylindrical shape with a standard outer diameter of 1.4 mm or less and an inner diameter of 0.75 mm or more. Since the protective tube is covered, detection with the optical fiber core detector becomes easy.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a basic configuration of an optical fiber cable main wiring rack of the present invention.

FIG. 2 is a schematic diagram showing an example of a jumper cord attached to a jumper cord fixing portion in a main wiring frame of FIG.

3 is a schematic view showing details of the extra-length storage card unit shown in FIG. 1, (a) is a top view showing an extra-length storage card state, and (b) is a cross section of the extra-length storage card unit. (C) is a front view showing the extra length stored state.

FIG. 4 is a schematic view showing an example of the structure of an extra storage card;
(A) shows the state when the lid is opened, and (b) shows the side.

FIG. 5 is a schematic view showing the appearance of a holder receiver which constitutes a part of the jumper cord fixing portion of FIG. 1;

FIG. 6 is a schematic view showing a reinforcing pipe holder constituting another part of the jumper cord fixing part of FIG. 1;

FIG. 7 is a schematic diagram showing a structure of a jumper fiber fixing guide corresponding to the extra length storage card unit of FIG. 1;

FIG. 8 is a schematic diagram showing the appearance of a terminated optical cable constituting a multi-core optical cable.

FIG. 9 is a schematic view showing a main wiring rack of the present invention.

FIG. 10 is a conceptual view showing a conventional optical fiber cable main wiring rack.

FIG. 11 is a schematic view showing an appearance of a tape cord connected to a connector connection unit 31 in the conventional optical fiber cable main wiring rack of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Protective tube 2 MT connector 3 Detention part 4 (2-core optical fiber) tape cord 5 Branch part 6 (single core) optical fiber cord 7 SC connector 11 Main wiring rack 12 Extra storage card unit 13 Jumper cord fixing part 14 Fixing part Holder 16 Multi-core optical cable 17 Frame wall 19 Office cable (using multi-core optical cable) 21 Cable termination 22 Extra length storage card unit 31 Connector connection unit 32 Optical fiber tape cord 33 Single-core optical connector (for example, FC or SC type connector) ) 34 Optical fiber single-core cord 35 Branch section 38 Fusion tray 39 Connector adapter 40 Jumper connection port between bridges 41 Jumper ring 42 Jumper cable fixing tool 43 Jumper cable fixing panel 44 Jumper panel 45 FO cord 46 Multi-core optical cable 47 Fusion Processing unit 48 Jumper code 1 'Extra length storage case 2' Fixed base plate 3 'Extra length storage card 4' Jumper fiber fixing guide 5 'Extra length storage card rotating shaft 6' Jumper guide 7 'Jumper code 8' Board 9 'Stop Metal fitting 10 'Lid 11' Hinge 12 'Connector fixing part 13' Multi-core optical cable entrance / exit 14 'Multi-core cable 15 MT connector (connection part) 15' (jumper cord side) MT connector (connection part) 20 'Reinforcement tube holder 21' Recess 22 'Hole 23' Support plate 24 'Holder support 25' Support rod 26 'Even flange 27' Odd flange 28 'Tape fiber protection tube 29' Void 31 'Cable termination 32' Spiral Tube 33 'Colored tube 34' Protective tube 35 'Connector number display

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-32404 (JP, A) JP-A-4-291207 (JP, A) JP-A-9-159840 (JP, A) 33202 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) G02B 6/00 336

Claims (12)

(57) [Claims] (A) a frame body for branching and connecting an optical fiber cable; and (B) both optical fibers connected to a connection between an optical fiber on the multi-core optical cable side and an optical fiber on the jumper cord side. accommodating the extra length portion in the connection portion unit, a plurality of slack storage card, (C) an optical fiber jumper cable end from the plurality of slack storage card positioned a predetermined jumper guided by the guide <br / And a substrate having an extra length storage card (B) and the substrate
(C) is a main wiring frame of an optical fiber cable, which is arranged in close proximity. 2. A plurality of extra-length storage cards (B) are stacked side by side so that they can be individually taken out, and a jumper guide is fixed to a board so that the guide state can be seen. 2. The storage device according to claim 1, wherein the extra length storage card is disposed in front of or can be inclined forward.
Optical fiber cable main wiring rack described. 3. The optical fiber cable main wiring frame according to claim 1, wherein the plurality of extra-length storage cards (B) are held rotatably with respect to a rotation axis. 4. The connecting portion is constituted by a connector, and both of the connected optical fibers have a surplus length that can be switched and connected to the connector of the connecting portion of one of the other plurality of extra length storage cards. The optical fiber cable main wiring frame according to claim 1, wherein: 5. A jumper fiber fixing guide has a plurality of flange, which has a gap for gripping an optical fiber jumper cable end from the jumper guide between flange, 且
Jumper fiber fixing guide and its back side
2. The optical fiber cable main wiring frame according to claim 1 , wherein a jumper guide is provided on the optical fiber cable. 6. The two guide members constituting the jumper fiber fixing guide are odd-numbered flanges on one side with respect to the center axis.
It has an even-numbered flange on the opposite side, and the jumper fiber fixing guide has two odd-numbered flanges and even-numbered flanges on both sides by overlapping the two guide members with one of them rotated by 180 degrees with respect to the center axis. The optical fiber cable main wiring rack according to claim 5 , further comprising a flange. 7. An optical fiber on the jumper cord side is fixed by a jumper fiber fixing guide for each of a plurality of optical fiber groups, and is individually provided between the extra length storage card unit (B) and the wiring frame main body (A). 2. The optical fiber cable main wiring rack according to claim 1, wherein the optical fiber cable is held in a hanging state. 8. The optical fiber cable according to claim 1, wherein the optical fiber on the jumper cord side has a protective tube and a retaining portion, and the wiring frame body has a jumper cord fixing portion for fixing the retaining portion. Main wiring frame. 9. The optical fiber cable main wiring frame according to claim 8, wherein the jumper cord fixing portion has a concave portion to be fitted complementarily to the retaining portion of the jumper cord. 10. The optical fiber cable main wiring according to claim 9 , wherein the concave portion of the jumper cord fixing portion is formed on a reinforcing tube holder, and the holder is rotatably held with respect to the wiring frame main body. Frame. 11. The optical fiber is covered with a protective tube,
The main wiring frame of an optical fiber cable according to claim 1, wherein the protective tube has a degree of transparency such that light leaking from the optical fiber can be detected by a cord detector. 12. The optical fiber cable main wiring frame according to claim 11 , wherein the protective tube has an outer diameter of 1.4 mm or less and is made of a polyester elastomer.