JPH0961638A - Optical connection storage structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform operation for connection switching, etc., without exerting the influence of a momentary break, etc., on an optical communication by providing a rotary support means which supports optical connection storage trays rotatably on arbitrary axes in both directions and relatively moves optical connection storage trays. SOLUTION: A tray storage part 58 where optical connection storage trays 57 are stacked is equipped with a support shaft 59 which supports the optical connection storage trays 57 rotatably in both directions on the axes of rotation perpendicular to a continuous plate 53 so that the optical connection storage trays 57 can move relatively. When the connection of an optical fiber 54 is switched, a target optical connection storage tray 57 among the optical connection storage trays 57 is drawn out to an input-side wiring part 62 or output-side wiring part 63 and the optical storage part tray 57 is opened. At this time, the insertion hole 61 of each optical connection storage tray 57 is opened nearby the support shaft 59, so even if the optical connection storage tray 57 rotates, the optical fiber 5 move little and no momentary break is made.

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 connection terminal box for branching and connecting an optical fiber led out from an optical fiber cable.

[0002]

2. Description of the Related Art Conventionally, as an optical connecting portion housing structure installed in a connecting terminal box for an optical fiber cable or the like, as shown in FIG. 3, an optical connecting portion such as an optical connector 1 and a connecting extra length 2 thereof are thin plates. The optical connection part storage tray 3 is generally housed in the optical connection part storage tray 3 and a plurality of the optical connection part storage trays 3 are stacked.

[0003]

By the way, in the case of the above-mentioned optical connection part accommodation structure, when switching the connection of the optical fiber 4, etc., the corresponding optical connection part accommodation tray 3 is pulled out to perform the work. Since the movement amount of the optical fiber 4 accompanying the pulling out of the optical connection part storage tray 3 is large, the optical fiber 4
However, there was a problem such as a momentary interruption of communication when the optical connection unit storage tray 3 was pulled out in a live state. In addition, since it is necessary to secure the extra connection length 2, the optical connection part storage tray 3 becomes large, and it is difficult to downsize the connection terminal box for the optical fiber cable.

In view of the above problems, for example, the optical connecting portion housing structure shown in FIGS. 4 and 5 has been proposed. The optical connection part storage structure of FIG. 4 is configured such that the stacked optical connection part storage trays 3 are relatively rotatably connected to each other by a rotational connection means such as a hinge and are opened and closed in a book shape. . In the case of this optical connection part storage structure, when the number of stacked optical connection part storage trays 3 is small, the amount of movement of the optical fiber 4 due to opening and closing is small, but when the number of stacked layers is increased, especially at the top or bottom of the stack. Since the amount of movement of the optical fiber 4 in a certain optical connection part storage tray 3 increases, the problem cannot be fundamentally solved. Further, since the other optical connection unit storage trays 3 also move when the target optical connection unit storage tray 3 is opened / closed, the number of moving optical connection unit storage trays 3 increases, which may cause a momentary interruption. is there.

In the optical connection part housing structure of FIG. 5, a plurality of optical connection part housing trays 3 each having one end close to the same axis are arranged radially about the axis. This optical connection part storage structure has a structure in which when a desired optical connection part storage tray 3 is moved, a plurality of adjacent optical connection part storage trays 3 are provided.
May be displaced to cause a momentary interruption, which does not lead to a fundamental solution to the problem. In addition, in the optical connecting part housing structure of FIGS. 3 to 5, although the optical connecting parts such as the optical connector 1 and the extra connection length 2 can be arranged and housed, a large number of optical fibers 4 can be stored.
Since they are wired around the optical connection part storage tray 3 and are likely to intersect with each other, this has been a cause of a decrease in work efficiency at the time of assembly or connection switching.

The present invention has been made in view of the above-mentioned problems, and it is possible to perform work such as connection switching without affecting optical communication such as momentary interruption, and moreover, optical connection in which work efficiency is improved. An object is to provide a part storage structure.

[0007]

In order to solve the above-mentioned problems, the following structure has been adopted as the means for solving the problems in the optical connecting part housing structure of the present invention. That is, in the optical connecting part accommodating structure according to claim 1, the optical connecting part accommodating trays are rotatably supported in the respective plane directions by using arbitrary pivot axes so that the optical connecting part accommodating trays can move relative to each other. The provision of the rotation support means was the means for solving the above problems.

According to another aspect of the present invention, there is provided the optical connecting portion accommodating structure, wherein a plurality of rotation supporting means are installed with their rotation axes parallel and close to each other, and the optical connecting portion accommodating tray is provided in the rotation supporting means. Radially arranged outward from the rotation axis arrangement portion in which each rotation axis is arranged, and an insertion hole for inserting an optical fiber inside and outside is provided in the vicinity of the rotation axis of each optical connection portion storage tray. The opening was used as a means for solving the above problems.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a connection terminal box for an optical fiber cable according to the present invention will be described below with reference to FIGS. Reference numeral 20 in the figure is a connection terminal box for an optical fiber cable to which the optical connection part housing structure of the present embodiment is applied. As shown in FIGS. 1 and 2, the optical fiber cable connection terminal box 20 holds a cylindrical sleeve 50 that is dividable and waterproof, and an optical fiber cable 51 at both ends in the axial direction of the sleeve 50. Grip fitting 52 and sleeve 50, a connecting plate 53 extending along the axial direction of the sleeve 50 for connecting the grip fittings 52, and an optical connection between the optical fibers 54 led from the optical fiber cable 51 on the connecting plate 53. Optical connector 55 as a part
And a pair of tray storage parts 58 each of which is formed by stacking a plurality of optical connection part storage trays 57 for accommodating the connection extra length 56, and in each tray storage part 58, the optical connection part storage tray 57 is connected to the connecting plate 53 in a vertical direction. And a support shaft 59 as a rotation support means for rotatably supporting each in the plane direction (plane direction parallel to the connecting plate 53) along the axis of motion so that the optical connection part accommodating trays 57 are relatively movable. are doing.

The support shafts 59 of the respective tray accommodating parts 58 are installed close to each other on the axis of the sleeve 50 in the rotation axis arrangement part 60 installed in the central part of the connecting plate 53 in the axial direction of the sleeve 50. The optical connection part storage tray 57 of each tray storage part 58 is formed of a light-weight material such as plastic into a thin plate having the same planar shape, and one end of the optical connection part storage tray 57 is rotatably connected to the rotation axis arrangement part 60. ing.
Further, when the sleeve 50 is closed, each tray storage portion 58
The optical connection part storage tray 57 of the sleeve 5 is positioned so as to be separated from each other around the rotation axis arrangement part 60.
It is designed to be stored in 0. Each optical connection part storage tray 57 is composed of a tray body (not shown) and a lid that can be opened and closed with respect to the tray body. By opening the lid, internal work can be performed. . In addition, the shape of the optical connection part storage tray 57 is the support shaft 5
It is not necessary that they are all the same as long as they are rotatable around 9, and it is also possible to stack optical connection part storage trays of various shapes as appropriate according to the application.

An insertion hole 6 for inserting the optical fiber 54 in and out is provided in the vicinity of the rotation axis of each optical connection part storage tray 57.
1 is opened. The optical fiber 54 wired in each optical connection part storage tray 57 is wired by utilizing the clearance between the support shafts 59. Inside the sleeve 50, there are two tray housing parts 58 and a rotation axis line arranging part 60, and an input side wiring part 62 on one side in the width direction of the connecting plate 53 (upper side in FIG. 1).
And the output side wiring portion 63 on the other side,
The signal input side optical fiber 54 is distributed to the input side wiring portion 62, and the signal output side optical fiber 54 is distributed to the output side wiring portion 63.

The operation and effect of the optical connecting part housing structure of the present invention will be described below. In the optical connection part storage structure,
When performing operations such as connection switching of the optical fiber 54 in the optical connector 55 in the optical connection unit storage tray 57, the target optical connection unit storage tray 57 is selected from the stacked optical connection unit storage trays 57 on the input side. The optical connection part storage tray 57 is opened by pulling it out to either the wiring part 62 or the output side wiring part 63. At this time, the optical connection part storage tray 57 other than the pulled out optical connection part storage tray 57 can be easily prevented from being moved only by the operator pressing the optical connection part storage tray 57 with a hand. Further, since the optical fiber 54 is distributed and wired to the input side wiring section 62 and the output side wiring section 63, it is easy to select the corresponding optical fiber 54 when switching the connection, and the work efficiency is improved. Furthermore, since the insertion hole 61 of each optical connection part storage tray 57 is opened near the support shaft 59,
Even if the optical connection part storage tray 57 is rotated, the optical fibers 54 hardly move, there is no concern about instantaneous interruption, and the entanglement of the optical fibers 54 is prevented.

When the work inside the optical connection unit storage tray 57 that has been pulled out is completed, the optical connection unit storage tray 57 is returned to the original position to form a stacked state. Also in this case, it is possible to easily prevent the influence of movement or vibration due to the re-stacking of the optical connection unit storage tray 57 from affecting the optical connection unit storage tray 57 in the stacked state.

Therefore, according to the optical connection part accommodation structure of the present embodiment, there is no fear of instantaneous interruption even if the optical connection part accommodation tray 57 is pulled out and re-stacked while the optical fiber 54 is in the live state. The work efficiency of connection switching and the like is improved, and the reliability of optical signal transmission is improved. Further, the optical fiber 54 is distributed to the input side wiring part 62 and the output side wiring part 63 and wired, and then the optical fiber 54 is wired to each optical connection part storage tray 57 through the insertion hole 51 opened near the support shaft 59. Optical fiber 5 accompanying movement of optical connection part storage tray 57
Since the movement of 4 has been eliminated, a large number of optical fibers 54 can be efficiently arranged and wired without causing entanglement, vibration, etc. due to movement of the optical connection unit storage tray 57, and instantaneous interruptions can be prevented to transmit optical signals. It is possible to further improve the reliability and work efficiency of connection switching.

In the above embodiment, an example in which a support shaft is applied as the rotation support means is shown, but if the optical connection part storage trays 57 can be supported so as to be relatively rotatable, for example, the rotation support means. Other configurations such as a guide member arranged along the locus may be used. You may arrange | position three or more rotation support means in a rotation axis arrangement part. In this case, three or more clearances formed between the rotation supporting means are used by distributing them to the wiring part of the input side optical fiber and the wiring part of the output side optical fiber. Further, the installation position of the rotation axis arrangement portion does not need to be the central portion of the sleeve 50, and the connecting plate 5
There is no need to be above 3. The optical connection part storage structure of the present invention is not limited to the connection terminal box for optical fiber cables, and various optical devices such as an optical fiber connection box and an optical wiring rack, as long as they accommodate a large number of optical connection parts between optical fibers. Can be applied to.

[0016]

As described above, according to the optical connecting portion accommodating structure of the present invention, the optical connecting portion accommodating tray is rotatably supported in the plane direction by using an arbitrary pivot axis, and the optical connecting portion is supported. The storage tray is provided with a rotation support means capable of moving relative to each other, and the optical connection portion storage tray is pulled out and re-stacked while the optical fiber is in a live state without moving the optical connection portion storage tray other than the intended one. Since the optical signal transmission can be performed, it is possible to prevent the instantaneous interruption of the optical signal transmission, improve the work efficiency such as connection switching, and improve the reliability of the optical signal transmission.

According to another aspect of the present invention, there is provided the optical connecting portion accommodating structure, wherein a plurality of rotation supporting means are installed such that their rotation axes are parallel and close to each other, and the optical connecting portion accommodating tray is provided in the rotation supporting means. Radially arranged outward from the rotation axis arrangement portion in which each rotation axis is arranged, and an insertion hole for inserting an optical fiber inside and outside is provided in the vicinity of the rotation axis of each optical connection portion storage tray. Since it is opened, the movement of the optical fiber due to the movement of the optical connection part storage tray is eliminated, and many optical fibers can be efficiently arranged and wired without causing entanglement etc. due to the movement of the optical connection part storage tray. Therefore, it is possible to prevent the instantaneous interruption and further improve the reliability of the transmission of the optical signal and the work efficiency such as the connection switching.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of an optical connection part housing structure of the present invention.

FIG. 2 is a side view showing an embodiment of the optical connection part housing structure of FIG.

FIG. 3 is a perspective view showing a conventional optical connection part housing structure.

FIG. 4 is a perspective view showing another example of a conventional optical connection part housing structure.

FIG. 5 is a perspective view showing another example of a conventional optical connection part housing structure.

[Explanation of symbols]

54 ... Optical fiber, 55 ... Optical connection part (optical connector), 5
6 ... Extra connection length, 57 ... Optical connection part storage tray, 59 ... Rotation support means (support shaft), 60 ... Rotation axis wiring part

Front page continuation (72) Inventor Yutaka Kurosawa 1440 Rokuzaki, Sakura City, Chiba Prefecture Fujikura Sakura Factory

Claims (2)

[Claims] 1. An optical connection housing for organizing and storing a plurality of optical connecting parts (55) of optical fibers and connection extra lengths (56) thereof in a plurality of laminated thin plate optical connecting part storage trays (57). The structure is provided with a rotation support means (59) for supporting the optical connection part storage trays rotatably in the surface direction with an arbitrary rotation axis and allowing the optical connection part storage trays to move relative to each other. A structure for storing an optical connection part, which is characterized in that 2. The optical connection part accommodating structure according to claim 1, wherein a plurality of rotation supporting means are installed with their respective rotation axes parallel and close to each other, and the optical connection part storage tray is pivotally supported. A rotation axis arrangement portion (6) in which each rotation axis of the means is arranged.
0) to the outside in a radial arrangement, and an insertion hole (61) for inserting the optical fiber (54) inside and outside is opened in the vicinity of the rotation axis of each optical connection part storage tray. Characteristic optical connection part storage structure.