JP2001324621A - Extra-wire storage case - Google Patents

Abstract

(57) [Abstract] (with correction) [Problem] To provide an extremely compact storage case that can hold and fix a plurality of storage trays collectively and facilitate expansion, thereby providing an extra length of optical fiber core and connecting a core. Store the part safely. SOLUTION: A pin shaft portion 2 is provided to protrude from both ends of a side plate having an optical fiber core lead-in / out portion 11 of a storage tray 10, and a locking claw portion 14 and a locking receiving portion 15 are provided on both side walls. A plurality of bearing portions 3 arranged side by side at equal intervals on the support 4 are formed with guide grooves opened upward, and the pin shaft portions 2 are inserted into the bearing portions 3 from the guide grooves so that the respective storage trays 10 are formed. The plurality of storage trays 10 are sequentially folded and placed on the support 4 in a multiplexed state, and the plurality of storage trays 10 are collectively rotated and laid down in a stacked state. The configuration is such that it can be held and fixed by the engagement between the pawl portion 5 and the lock receiving portion 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication cable, and more particularly to a case for storing an extra-core connection length storage case comprising a storage tray for protecting a connection portion of an optical fiber cable having an optical fiber core and storing the extra core length. Things.

[0002]

2. Description of the Related Art Conventionally, branching of optical fiber cables,
When performing pull-in, connection, or the like, a core wire connection extra length storage case is used to connect the cable cores to each other and to store the extra length of the cable cores. In this case,
A core wire lead-in / out portion serving as a portion for guiding a core wire into / from a storage tray, and optical fiber core wires drawn out from a trunk optical fiber cable to be drawn in / out from the core lead-in / out portion or drawn out from a branching optical fiber cable. A connector storage portion for storing a connection portion such as a connector for connecting a cored wire, and a core storage portion for further winding and protecting and storing the extra length portion of the connected core wire. Are known.

[0003]

However, in a communication network using an optical fiber cable, the capacity tends to be insufficient in the extra-core storage section as the cable density and the number of cores increase, and a large number of sheets are stacked. Diversification of the storage trays provided makes it difficult to accommodate the extra length of the core wire, causing optical loss of the core wire, adversely affecting the transmission characteristics, making it difficult to perform the work associated with the connection branch, and easily coping with expansion There is a problem that it cannot be made compact because it cannot be made.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can easily perform connection, switching or branch connection of an optical fiber cable without adversely affecting the transmission characteristics of the optical fiber cable. The purpose of the present invention is to provide an inexpensive form of an easy-to-handle core-wire connection extra-length storage case that can hold and fix the storage trays collectively, is easy to add, and can stably store the connection portion in an extremely compact manner. Things.

[0005]

In order to solve the above-mentioned problems, a first aspect of the present invention relates to a core lead-in / out part for leading / leading out an optical fiber core, and a core lead-in / out from the core lead-in / out part. A plurality of storage trays having a connector storage portion for storing connected connectors and a core length storage portion for winding and storing the core length are supported by hinge portions each including a pin shaft portion and a bearing portion. It is rotatable on the body, and detachably arranged side by side to constitute a core wire connection extra length storage case,
Pin shafts are provided opposite to each other at both ends of the side plate having the core wire lead-in / out portion of the storage tray, and a locking claw portion and a locking receiving portion are provided on both side walls. A guide groove opened upward is formed in the bearing portion, and the pin shaft portion is inserted into the bearing portion from the guide groove, and the respective storage trays are sequentially folded and arranged on the support under a multiplex state, The plurality of storage trays are collectively rotated in a stacked state and turned down, and at the final stage of the rotation, the storage trays can be held and fixed by the engagement of the respective locking claws and the locking receiving portions. It is characterized by having comprised.

According to a second aspect of the present invention, there is provided the core connection excess length storage case according to the first aspect, further comprising a connector storage portion for holding a plurality of connectors, which is derived from the connectors held in each connector storage portion. The core holding portion is separated and wound around a pair of core holding portions arranged in parallel in the storage tray, and an elastic holding member for inserting and holding the core wire through the core lead-in / out portion is detachable. Characterized by being fitted and deployed on

According to a third aspect of the present invention, in the core-line extra-length storage case according to the first or second aspect, when a plurality of the storage trays are stacked, the locking claw on one adjacent storage tray is provided. In a multiplex state in which the portions are sequentially engaged with the locking receiving portions of the other storage tray and shifted in a stepwise manner, the portions are inclined and held on the support.

According to a fourth aspect of the present invention, there is provided the core connection extra length storage case according to the first, second or third aspect,
A partition wall is provided in the center of the side plate of the storage tray in a horizontal state, and a core lead-in / out portion, a connector storage portion, and a core wire excess length storage portion are formed by guide ribs on both upper and lower sides of the partition wall. It is characterized by.

[0009]

According to the present invention, a plurality of storage trays for protecting and storing the excess connection portion of the optical fiber are rotatably connected to each other. Rotate all at once and face down, at the final stage of the rotation,
Since each storage tray can be held and fixed by the engagement of each locking claw and locking receiving part, raise and open any storage tray to check the work of connecting core wires and the connection status. , Confirmation, adjustment, and the like can be performed very easily, and the storage trays can be collectively held down with a single touch after completion of the storage of the extra-core wire, thereby improving workability. In addition, since each storage tray pivots with a hinge portion on a side plate having an optical fiber core lead-in / out portion, fluctuations in the length of the optical fiber core due to rotation of the storage tray are accommodated, and transmission characteristics are reduced. There is no adverse effect. Moreover, even if the upper storage tray is rotated to return to the original position after the core wire is connected, the optical fiber core wire does not loosen, and the core portion is not excessively bent and the arc-shaped portion having a small radius of curvature is formed. It can be stored without any problem and can be safely protected. Furthermore, when a plurality of storage trays are stacked, the locking claw portion on one adjacent storage tray is sequentially engaged with the locking receiving portion on the other storage tray and is shifted in a stepwise manner under a multiplex state. By holding the support at an angle, the wiring arrangement can be neatly arranged, the core wire can be easily identified, and the connected storage trays can be separately removed, so that the storage trays can be easily updated and expanded. Can be.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings. The extra-core-length storage case 1 is composed of a plurality of storage trays 10 of the same shape. , A connector storage section 12 for storing a connector connecting the cores which enter from the core lead-in / out section 11, and an extra-core storage for winding and storing the extra-core. And a plurality of storage trays 10 stacked one upon another.

The storage tray 10 is a molded article integrally formed of a synthetic resin, and has a substantially rectangular outer shape as shown in FIGS. 1 and 2, and has an inner surface formed in the same shape. The pin shafts 2 are protruded from both sides of the side plate of the storage tray 10 having the cord lead-in / out portions 11 so as to face each other. In a state where the storage trays 10 are overlapped with each other, the locking claws 5 of one storage tray 10 are inserted into the locking receiving portions 6 of the other storage tray 10 so that the two storage trays 10 are inclined with respect to each other. It is something that is held.

As shown in FIGS. 3 to 6, the storage tray 10 is of a four-core collective storage type, and includes a connector storage portion 12 for storing and holding a connector b for connecting a core a, The extra-core-length storage portion 13 drawn from the connection connector b held in the storage portion 12 and wound and held in a loop shape is divided by the guide ribs 12 ₁ and 13 ₁ . The storage tray 10 having a substantially rectangular shape is used. The storage trays 10 adjacent to each other by a hinge portion composed of a pair of pin shafts 2 provided on both sides of the outer wall side surface of the storage tray 10 and a pair of bearings 3 provided on the support 4 are supported by the support 4. It is rotatable, for example, rotatable by 120 to 150 degrees, and is removably connected so as to be vertically stacked in multiple stages. The pin shafts 2 are provided opposite to each other at both ends of the adjacent storage trays 10 where the core wire lead-in / out portions 11 are provided, and the locking claw portions 5 and the locking receiving portions 6 are provided on both side walls. to form the guide grooves 3 ₁ which is open upward to the bearing portions 3 in which a plurality of juxtaposed at equal intervals in the support body 4, by inserting the said pin shank 2 into the bearing part 3 from the guide groove 3 ₁ Each of the storage trays 10 is sequentially folded and disposed on the support 4 in a multiplexed state, and the plurality of storage trays 10 are turned and turned down at once in a stacked state. Each is a locking claw 5
It can be held and fixed by engagement between the lock receiving portion 6 and the lock receiving portion 6.

An elastic holding member c provided with a core wire insertion hole having a separation slit is press-fitted into a core wire lead-in / out portion 11 having a tongue-shaped locking piece 14 formed in the storage tray 10. The support of the core wire a is ensured, and the elastic holding member c having a through hole according to the core wire diameter or the number of core wires is selected and used. Guide ribs 12 and more connector housing section 12 and the core wire excess length accommodating portion 13 _1, 13 ₁ and integrally molded core locking pieces 15 or the hook 16 prevents the floating of the core wire to choose sidewall extra A long core wire a and a connector b serving as a core wire connection portion can be securely held in the storage tray 10, and the core wire a is separated and stored for each storage tray 10, and the fiber is inserted from the cable insertion portion. The bending of the core is minimal, and the twist during storage of the core can be prevented, and high reliability can be obtained with safe, high-density storage.

In this case, if the locking claws 5 of the storage tray 10 on the upper side of the desired storage tray 10 are removed from the locking receiving portion 6 among the storage trays 10 stacked in multiple stages, the pin shaft 2 and the pin shaft 2 can be removed. The storage tray 10 can be pivoted about the hinge part composed of the bearing part 3 as a fulcrum, the overlapping surface can be opened, and the inner surface side of the lower storage tray 10 is exposed, thereby facilitating the connection and wiring work of the storage core wire. it can.

Furthermore, when connecting the one storage tray 10 on the other storage tray 10, if pushed lightly by inserting the pin shaft 2 with the guide groove 3 ₁ of the bearing portion 3, the bearing part 3 is in its pushing force It is elastically displaced, is easily fitted into the shaft hole, and is rotatably connected. When a plurality of storage trays 10 are stacked, the lock receiving portion 5 on one of the storage trays 10 adjacent to the storage trays 10 is connected to the other storage tray 10. Is fixed by being inclinedly held on the support 4 in a multiplexed state in which it is sequentially engaged with the locking receiving portions 6 and shifted in stages. Also during removal is easily pin shank 2 from the guide groove 3 ₁ of the bearing portion 3 guide grooves 3 ₁
The pin shaft portion 2 can be easily pulled out from the bearing portion 3 and easily removed, and inspection of the core wire in the storage tray 10 can be performed.
Repair and connection can be easily performed.

The core wire lead-in / out section 11 is not limited to a single type provided on one side, but may be a pair type provided on both sides, that is, a double type provided at four corners.
Moreover, since the storage tray 10 is formed into a substantially square, rectangular quadrangle or elliptical shape by injection molding of a synthetic resin, the excess core storage portion 1 adjacent to the connector storage portion 12 is provided.
3 is provided so that the core wire can be wound and held in a smoothly curved loop shape so that the transmission characteristics are not adversely affected by the cable holding member 15 for cable holding arranged at a predetermined interval. .

As shown in FIG. 6, a plurality of the storage trays 10 are superimposed on each other and used as a core-line-excess-length storage case 1 incorporated in a cylindrical closure 22 composed of a base member 20 and a cover member 21. But storage tray 1
The support member 4 supporting the shaft 0 is fixed to a support plate 8 provided via an attachment member 9, and a cable seal 23 made of a rubber-like elastic material, for example, a thermoplastic rubber composition is inserted into the insertion hole 1 of the base member 20. The cable A is inserted into the cable seal 23 so as to penetrate the cable A in a liquid-tight manner, and the cable A has a cable holding metal fitting 24 formed on the inner surface of the base member 20.
It is arranged to be removable. In this case, the cover member 21
The base member 20 and the cover member 21 are packed (not shown) by fitting the base member 20 to the outer peripheral surface of the base member, fitting the openable and closable band 25 with a hinge, and tightening the buckle.
Are connected and connected via.

To explain this example of the closure 22, the trunk optical cable A is pierced through the base member 20 and fixed by the cable holding metal fitting 24, and the tension member of the cable is connected to the tension member holding metal fitting 24 _1.
Connected. The cover member 21 is configured such that the storage tray 10 is butt-sealed and connected to the base member 20 in an interior state to be integrally connected.

The engagement knob 7 provided on the storage tray 10
May be used as an operation handle, and may be used to connect and hold the base member 20 by inserting a hand or a support rod (not shown) as necessary when a plurality of storage trays 10 are stacked. However, it is also possible to adopt a mode in which connection bosses are fitted and connected for each of the upper and lower stages.

In the storage tray 10 having the above configuration,
The cord a branched from the cable A is
Enter from the core lead-in / out section 11 of one of the first entrances
And the guide rib 12₁ , 13₁ Through the core passage between
Together with the retaining piece 15 for holding down the core wire.
The wire enters the extra wire length storage section 12. Core a is core
When entering the long storage portion 13 or the like, the guide rib 13₁
 Pass through the entrance formed by. The core wire a is
While being held down by the stopper 15, the guide rib 13
₁ And the insertion of the connector storage section 12
Guide rib 12 ₁ Connected to connector b attached to
Is done. The core a coming out of the connector b is
Through the long storage part 13, the lead-in / out of the core wire of the other second entrance / exit
The case 11 goes out of the case. In addition, hold down the core wire a.
The locking piece 15 is divided into two upper and lower parts, for example,
Alternatively, it can be distributed to 2/3, 1/3, etc.
When passing through the core wire a, the upper locking piece 15 and the lower locking piece 15
15 and let it pass through, for wiring at the time of expansion
Ensure safe wiring without interference of each core
Is considered.

As described above, when the core wire a is inserted from one side of the core wire lead-in / out portion 11, when the core wire a is stored in the core wire extra length storage portion 13, it can be taken out to the other core lead-in / out portion 11 side. . When the core wire a is inserted from one side of the core wire lead-in / out portion 11 and stored in the core excess length storage portion 13, which side of both the core wire lead-in / out portions 11 depends on how the core wire a is wound. Can also be issued. As described above, the core wire a can be inserted into the storage tray 10 from any of the core wire lead-in / out portions 11 and the entrance side without reducing the curvature of the core wire a (without applying an overload). Core lead-out section 1 has become
The same or different cord lead-in / out section 11 as 1 can be taken out as the exit side. Thereby, the entrance / exit side of the core wire can be freely set, so that the wiring of the core wire in the optical cable closure can be facilitated.

The core lead-in / out section 11 is provided with an elastically deformable elastic holding member c (see FIG. 1) made of rubber or the like having a through-hole formed therein. To enter the storage tray 10 and out of the storage tray 10.
The elastic holding member c for supporting the cord is held by the locking piece 14. In this manner, the elastic holding member c is
When the core wire a passes through the core wire lead-in / out portion 11, the core wire a can be prevented from rubbing against the tray body, and a tensile impact can be reliably prevented.

The storage trays 10 are mounted so as to be sequentially stacked in the optical cable closure (see FIG. 6). In this stacking, the (tray body upper surface) side is set to the upper side, and the locking claw portion 5 for engagement is set to the lower side. Then, if the storage trays 10 are placed in the locking receiving portions 6 of the lower storage trays 10, the overlapping storage trays 10 can be connected to each other without screwing or the like. For example, when each storage tray 10 is raised and opened, the storage tray 10 at one end is turned and turned down, then the other storage trays 10 are also turned down in a shogi manner, and a plurality of storage trays 10 are collectively collected. The locking claws 5 and the locking receiving portions 6 can lock and hold.

In the embodiment shown in FIGS. 7 to 10, the storage tray 30 which is configured as the core connection excess length storage case 1 is configured so that both front and back surfaces can be used as a storage part for the core a. Partition wall 3 in the horizontal state at the center of the side plate 31
2, a core wire lead-in / out portion 11, a connector storage portion 12, and a core excess length storage portion 13 are formed on both upper and lower sides of the partition wall 32 by guide ribs. The structure in which the engagement receiving portion 6, the guide ribs 12 ₁ and 13 ₁ and the locking pieces 14 and 15 are integrally formed is the same as that of the previous example, and eliminates the interference of the respective branch cores a and safely provides the core. Extra length can be stored. In addition, the above-mentioned extra core length storage section 13 and the like are formed two on one side, but one type or two or more types can also be used. In the case where a plurality of core wires a are arranged in parallel, a communication passage is formed in the adjacent core wire extra length storage portion 13 by a guide rib and can be folded back and wound, thereby increasing the degree of freedom of drawing and inserting the core wire a. Be considered.

[0025]

According to the present invention, according to the first aspect of the present invention, pin shaft portions are provided opposite to each other at both ends of the side plate having the core wire lead-in / out portion of the storage tray, and the locking claw portion and the locking receiving portion are further provided. Are provided on both side walls, and a plurality of bearing portions arranged in parallel at equal intervals on the support body are formed with guide grooves opened upward, and the pin shaft portion is inserted into the bearing portions from the guide grooves to fit the respective bearing portions. The storage trays are successively folded and arranged on the support under a multiplexed state, and the plurality of storage trays are turned in a lump in a stacked state and turned down, and at the final stage of the rotation, each storage tray is With the configuration that can be held and fixed by the engagement between the locking claw and the locking receiving portion, the hinge connection of the upper and lower storage trays can be easily engaged and disengaged, and can be easily stacked in multiple stages, and more than one sheet can be stacked. The stacked storage trays are mutually rotated about the side plate of the lead-in / out section. Can be quickly opened to open any storage tray after connecting the core wires, and the stored optical fiber core wires can be quickly taken out. Because it can be held, the work is simple and extremely good, the core wire can be easily identified, the connection can be readjusted and repaired easily, and the workability is greatly improved. In addition to being able to be stacked and displaced, simplification of the operation of checking the entire storage trays stacked in multiple stages, and the ability to properly hold the storage trays, thereby improving safety. According to the second aspect of the present invention, it is possible to easily store the extra length of the core wire, and there is also room for the winding and storage of the core wire, and the core wire is also held in a buffered manner. No change occurs in the length of the extra length of the stored optical fiber even when the respective storage trays are rotated and unfolded. In addition, it is possible to maintain good transmission characteristics by eliminating light loss without causing excessive bending or small arcs. According to the third aspect of the present invention, when branching or pulling in the core wire, there is a degree of freedom in drawing and inserting the core wire into and out of the storage tray, so that access to the core wire connection portion can be simplified in operation, and The storage tray can be compactly arranged, management and assembly / disassembly operations can be easily performed, and high density and high reliability can be obtained. Furthermore, according to the invention of claim 4, the storage trays stacked in as many stages as necessary are not displaced or displaced from each other, and can be safely handled without interference in the storage of the extra cord length. It is easily and securely connected and can be held in the closure as an easy-to-identify extra-core storage case, so high reliability in extra-core storage is obtained, and there is no need to screw between the storage trays. It can be attached and detached, handling can be greatly facilitated, and compactness can be achieved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a core wire connection extra length storage case according to one embodiment of the present invention, showing a part of a tray opened to show an inner surface side.

FIG. 2 is a side view showing the use state shown in FIG.

FIG. 3 is a plan view of the state shown in FIG. 2 as viewed from above.

FIGS. 4A and 4B are views showing a state in which the extra-core-length storage case shown in FIG. 3 is separated from a support, wherein FIG. 4A is a plan view and FIG. 4B is a bottom view of a storage tray.

FIG. 5 is an enlarged view showing each part of the example of FIG. 4;
FIG. 2B is an enlarged longitudinal sectional view taken along line A, FIG. 2B is a partially enlarged longitudinal sectional view taken along line BB, and FIG. 2C is a side view of the entire storage tray.

FIG. 6 is a longitudinal sectional view of one use state in which the core connection excess length storage case of the example of FIGS. 1 to 5 is incorporated in a closure.

FIG. 7 is a plan view of another embodiment of the present invention, showing a four-core separated and accommodated core connection extra-length storage case.

FIG. 8 is a bottom view of the example of FIG. 7;

9 is an enlarged vertical sectional view taken along line CC of FIG. 7;

FIG. 10 is a front view of the example of FIG. 7;

[Explanation of symbols]

Reference Signs List A optical cable a core wire b connector c elastic holding member 1 excess core wire connection storage case 2 pin shaft part 3 bearing part 4 support 5 locking claw part 6 locking receiving part 7 engagement knob 8 support plate 9 mounting member 10 Storage tray 11 Core lead-in / out part 12 Connector storage part 12 ₁ , 13 ₁ Guide rib 13 Extra core length storage part 14 Locking piece 15 Locking piece 16 Locking claw 20 Base member 21 Cover member 23 Cable seal 24 Cable gripping fitting

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Ichiro Tanaka 4-35-3 Yoyogi, Shibuya-ku, Tokyo Japan Recomm. Inc. (72) Yasuhiko Shinmachi 4-35-3 Yoyogi, Shibuya-ku, Tokyo Japan Co., Ltd. Within RECOM (72) Inventor Kazuka Niimi 2-3-1 Otemachi, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Masaaki Shinfuku 2-3-1 Otemachi, Chiyoda-ku, Tokyo Issue Nippon Telegraph and Telephone Corporation (72) Inventor Sadaaki Takano 2-3-1 Otemachi, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Minoru Murayama 2-chome Otemachi, Chiyoda-ku, Tokyo No. 1 Nippon Telegraph and Telephone Corporation F-term (reference) 2H036 RA23 RA25 2H038 CA37

Claims (4)

[Claims] 1. An optical fiber lead-in / out part for guiding an optical fiber core, a connector storage part for storing a connector connecting the cores entering from the core lead-in / wire-out part, and a core wire extra length wound and stored. A plurality of storage trays each having a core wire storage portion are rotatably and detachably juxtaposed on a support by hinge portions each composed of a pin shaft portion and a bearing portion. A storage case is configured, and pin shaft portions are provided opposite to each other at both ends of the side plate having the core wire lead-in / out portion of the storage tray, and further, a locking claw portion and a locking receiving portion are provided on both side walls, A plurality of bearing portions provided side by side at equal intervals on the support are formed with guide grooves opened upward, and the pin shaft portions are inserted from the guide grooves into the bearing portions, and the respective storage trays are sequentially folded and folded. Deployed on a support in a multiplexed state and stacking multiple storage trays And the storage trays can be held and fixed by engaging the respective locking claws and the locking receiving portions at the final stage of the rotation. Extra wire connection storage case. 2. The core wire connection excess length storage case according to claim 1, further comprising a plurality of connector storage portions for holding connectors, and a core excess length derived from the connector held in each connector storage portion. Is separated and wound into a pair of extra-core storage portions arranged side by side in the storage tray, and an elastic holding member that inserts and holds the core into the core lead-in / out portion is detachably fitted and provided. An extra-length core storage case. 3. The core wire connection extra length storage case according to claim 1, wherein a locking claw portion and a locking receiving portion are provided on both side plates of the storage tray, and a plurality of the storage trays are stacked. In this case, the locking claws on one of the adjacent storage trays are sequentially engaged with the locking receiving portions on the other storage tray, and are tilted and held on the support in a multiplexed state shifted in a stepwise manner. A core connection extra-length storage case, characterized in that: 4. The core connection extra-length storage case according to claim 1, wherein a partition wall is provided horizontally at a center of a side plate of the storage tray, and upper and lower surfaces of the partition wall are provided. An extra core storage case, wherein a core lead-in / out portion, a connector storage portion, and an extra core storage portion are formed by guide ribs on the side.