JPS61295510A - Storage part for excessive length of optical fiber - Google Patents

Abstract

PURPOSE:To take out the intermediate excessive-length part of a suspended excessive-length part easily and individually by providing plural storage plates which are suspended at mutual intervals and a holding means which holds those storage plates at specific positions. CONSTITUTION:The respective storage plates 16 are normally suspended in many stages by upper and lower hook suspenders 20 and 22. In this state, each storage plate 16 is held by holders 32 and 32' pressed by springs 30 and 30'. When one or two optional storage plates 16 are drawn out, their holders 32 and 32' are freed from cams 28 and 28' and receiving plates 34 and 34' are moved forth by springs 30 and 30' in one body, so that a storage plate 16 below it is suspended by receiving plates 34 and 34'.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in an extra length storage section used in an optical cable junction box.

(Prior Art) Generally, this type of junction box is housed by stacking the excess lengths of a large number of core wires of optical cables in multiple stages. In the prior art, this type of extra length storage section consisted of a plurality of storage cases having holes through which a pair of stud bolts fixed to the junction box body passed. However, with such a structure, work efficiency is poor because it is not possible to take out any intermediate core wire alone when removing the extra length during connection change or maintenance, and when removing this intermediate core wire, other Since the core wire excess length storage case also had to be pulled out, there was a risk of damaging other core wires. To provide an optical cable surplus storage part which can be easily taken out independently, improves workability, and has a simple and economical structure.

(Structure of the Invention) The optical cable surplus length storage unit according to the present invention includes a plurality of storage plates that store the surplus lengths of each core wire of the optical cable and are suspended at intervals, and these storage plates are arranged in a predetermined manner. The upper and lower surfaces of both ends of each storage board include an upper hanging fixture for hanging from the storage plate on the upper side and a lower hanging fixture for hanging the storage plate on the lower side. The holding means has a spring that is compressed by cams provided on both sides of the storage plate when the storage plate is in the stored state, and a holder that holds the storage plate and the cam when the storage plate is released from the stored state. and a receiving plate that is released from the storage plate and moves forward to the lower surface of the storage plate on the lower side to hold the storage plate on the lower side. Parts can be easily taken out individually, improving work efficiency when changing connections or performing maintenance.

Therefore, other core wires will not be damaged when taking out this extra length, and even if any storage plate is removed, the storage plate below it will be received by the advancement of the receiving plate provided on the holding means. Therefore, it will not fall off.

(Embodiment) An embodiment of the present invention will be described in detail with reference to the drawings. FIG. A plurality of storage plates 16 that store the extra length portions 14 wound into an oval shape (see FIG. 2) and are suspended at intervals, and a holding means 18 (a second (see figure).

As shown in FIG. 2, each storage plate 16 has upper hooks 2 on the upper and lower surfaces of both ends thereof, which are suspended from the upper storage plate 16.
0 and the lower hanging stop jL, 2 for hanging the storage board 16 on the lower side.
In the illustrated embodiment, these upper and lower latches 20 and 22 accommodate a plate 21 having a U-shaped bent piece 20a and a plate 23 having an L-shaped bent piece 22a, respectively, with screws 24. It is fixed to the board 16 and attached to the storage board 16. Incidentally, in FIG. 2, reference numeral 26 is a bent piece that prevents the extra length portion 14 from jumping out from the storage plate 16.

The holding means 18 holds the storage plate 16 in the stored state.
The spring 3 is
Holder 3 compressed by 0.30° to hold storage plate 16
2, 32' and the storage plate 16 are released from the cam 28゜28' when the storage plate 16 is released from the storage state and the storage plate 16 on the lower side is released.
In the embodiment shown, the retainer 32, 32' and the receiving plates 34, 34' are screwed together. 36.3
The holders 32 and 32 degrees are slidably supported by sliding plates 40 and 40' which are horizontally fixed to support plates 38 and 38 degrees in a connection box (not shown). Guide rod 42゜4 fixed to moving plates 40, 40'
2' into the holders 32, 32' to insert the holder 32.
, 32'. Also, spring 30
, 30' are attached to the guide rods 42, 42' and bias the retainers 32, 32' toward the cams 28, 28'. Cam 28.28' and retention, 3
2 and 32 degrees are provided at diagonal positions A and B of one storage plate 16 as shown in FIG.
28' and holders 32, 32' are at other diagonal positions C
, D. In addition, since the storage plate 16 is held by holders 32 and 32' located at diagonal positions, in order to prevent the storage plate 16 from tilting, a holding member of the storage plate is placed at the vacant position C, D or A, B. It is preferable to provide one.

Next, we will explain how the present invention is used.1 Normally, as shown in FIG.
It is suspended in multiple tiers. In this state, as shown in FIG. When it is pulled out, its retainer J432, 32' is released from the cam 28, 28', and the springs 30, 30' hold the support plate 3 integral therewith.
4,34° is advanced and therefore the storage plate 16 on its lower side
is suspended by this receiving plate 34.34'.

(Effects of the Invention) According to the present invention, as described above, since it is possible to pull out any storage plate and easily take out the extra length at the intermediate position, workability during connection change or maintenance is improved. Therefore, other core wires are not damaged when this extra length is taken out.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of an optical cable surplus length storage section according to the present invention, FIG. 2 is an enlarged perspective view of one storage plate and its holding means, and FIG. 3 is a schematic top view of one storage plate. be. 10---Excess length storage section for optical cable, 12.12'
-----One optical core wire, 16------ Storage plate, 1a---
- retention means, 20.22 - upper and lower latches;
28.28'----1 cam, 30.30°-1---
Spring, 32.32'---11 Holder, 34.34'-
-1--Socket plate.

Claims (2)

[Claims] (1) A plurality of storage plates that store the extra length of each core wire of an optical cable and are suspended at a distance from each other, and a holding means that holds the storage plates in a predetermined position, both ends of each storage plate. The upper and lower surfaces thereof have an upper hook for hanging the storage plate on the upper side and a lower hook for hanging the storage plate on the lower side, and the holding means is in the storage state of the storage plate. A spring is compressed by cams provided on both sides of the storage plate, and when the holder that holds the storage plate and the storage plate are removed from the stored state, it is released from the cam and advances to the lower surface of the storage plate located below. and a receiving plate for holding a lower storage plate. (2) The optical cable surplus length storage unit according to claim 1, wherein the holder is disposed at a diagonal position on a side surface of the storage plate.