JPS60169811A - Containing device for connection excessive length of optical fiber - Google Patents

Abstract

PURPOSE:To easily lead out the connection excessive-length part of an optical fiber by suspending plural optical fiber connection excessive-length storage cases detachably from case suspension holders. CONSTITUTION:The containing device 26 for the connection excessive-length part of an optical fiber consists of a couple of case suspension holders 27 stood horizontally on a vertical substrate 1 and plural optical fiber connection excessive-length storage cases 28 suspended detachably from the holders 27. Each holder 27 consists of a U-sectioned stand 29 stood horizontally on the vertical substrate 1 and a rubber-made support 30 supported while clamped in the stand 29. Case suspension parts 30A are projected from a flank of the support 30 at constant intervals and an arm engaging groove 30B has an area reduction part halfway on the top surface of each case suspension part 30A. The case 28 is supported on each suspension arm 34.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an optical fiber connection excess length storage device that stores the connection excess length of an optical fiber.

(Prior art) In terms of cable connections, the extra length of the optical fiber connection is taken in advance in preparation for connection change or reconnection at a later date, and this extra connection length of the optical fiber is stored in the connection box. It is stored inside the case.

Conventional optical fiber connection excess length storage devices are configured by stacking optical fiber connection excess length storage cases in a connection box, so the connection excess length of the optical fiber in a specific optical fiber connection excess length storage case is It had the disadvantage that it was difficult to remove it. Also, if the device is made into a drawer type for convenience without being taken out, the structure becomes complicated.

(Object of the Invention) An object of the present invention is to provide an optical fiber connection excess length storage device which allows easy removal of the connection excess length of an optical fiber and has a simple structure.

(Structure of the Invention) In the optical fiber connection extra length storage device according to the present invention, a plurality of optical fiber connection extra length storage cases are each removably suspended and supported by a case hanging holder installed horizontally. It is characterized by:

If each optical fiber connection extra length storage case is removably hung and supported on the case hanging holder in this way, you can easily open any case by simply flipping over it, and you can easily select the case you want. It can be removed to take out the remaining length of the optical fiber connection. Further, in the present invention, since the cases are not stacked one on top of the other, it is possible to avoid a situation in which the upper case is weighed down by the lower case and the transmission loss of the optical fiber increases.

(Example) Examples of the present invention will be described in detail below with reference to FIGS. 1 to 6. In this embodiment, the optical fiber connection surplus length storage device of the present invention is shown installed in the optical cable connection section. That is, the optical cable connection part has a plain wooden body 3 consisting of a rectangular flat plate-shaped substrate 1 arranged vertically, and a chevron-shaped IJ bar 2 covered so as to close the periphery and front side of the substrate 1. There is. Supports 4 are intermittently erected on the edges of the board 1, and the cover 2 has screws 5 attached to the upper ends of the supports 4.
is fixed. A cable lead-in port 6 and a cord lead-in lower are formed on the bottom surface of the cover 2 so as to open to the board 1 side as well. A cable retaining unit 8 is fixed with screws 9 on the board 1 in correspondence with the cable lead-in port 6 of the cover 2. The cable retaining unit 8 has a structure in which a cable sheath retaining part 11 and a cable tension member retaining part 12 are integrally connected to a common board 10, and an optical cable 13 drawn into the white wooden body 3. The cable sheath 14 of the cable sheath 14 is held in place by a cable sheath holding part 11, and the cable tension member 15 is held in place by a cable tension member holding part 12.

Further, a rubber bushing 16 is supported by the 1-sol retaining unit 8 . A cord retaining unit 17 is fixed on the board 1 with screws 18 in correspondence with the cord retracting lower part of the cover 2. This cord retaining unit 17 consists of a retaining stand 19 fixed to the board 1 with screws 18, and retaining fittings 21 fitted into slits 20 cut into the stand 19 at predetermined intervals in the longitudinal direction. The wiring optical cord 22 drawn into the white wooden body 3 is held in place by a holding bushing 21.

Inside the plain wood body 3, the coated optical fiber 23 led out from the optical cable 13 and the coated optical fiber 24 led out from the optical wiring cord 22 are connected at a fiber connection part 25 with the necessary extra connection length. It has been done.

These fiber connection parts 25 and each coated optical fiber 23.
The extra connection length portion 24 is stored in the optical fiber connection extra length storage device 26 of the present invention. This optical fiber connection extra length storage device 26 is detachably suspended and supported by a pair of base suspension holders 27 erected horizontally on the vertically oriented substrate 1 and by these case suspension holders 27, respectively. It consists of a plurality of optical fiber connection extra length storage cases 28. Each case hanging holder 27 includes a stand 29 with a mouth-shaped cross section that stands horizontally with respect to the vertically oriented substrate 1, and a rubber case that is supported by being sandwiched between the stands 29. It consists of a hanging support 30. Case hanging parts 30A are protruded from the side surface of the case hanging support 30 at regular intervals, and each case hanging part 30
An arm fitting fR30B is formed on the upper surface of A so as to have a constricted part in the middle. The optical fiber connection extra length storage case 28 includes a rubber substrate 31,
On the surface of this board 310, disk-shaped bobbins 32 are arranged at predetermined intervals.
is installed protrudingly. The upper end of the substrate 31 has a flexible 1
A pair of hanging hands 33 are provided in a protruding manner, and a hanging arm 34 is supported horizontally through these hanging hands 33. A fiber connection portion holder 35 is provided protruding from the upper part of the substrate 31 between the two hanging hands 33 . A thin, transparent plastic cover 36 is attached to the back surface of the substrate 31. This cover 36 has side folding portions 3 that are folded back onto the upper surfaces of both bobbins 32 on both sides in the alignment direction of the bobbins 32.
6A, and a lower folded part 36B which is folded back to the upper surface of both bobbins 32 at the lower part of both bobbins 32. Each folded portion 36A.

36B is bent so that it comes into contact with each bobbin 32. The cover 36 also covers a presser band portion 36C that penetrates the substrate 31 under the fiber connection portion holder 35 and is led out to the front side. This presser band part 3
6G passes between both bobbins 320 and attaches to cover 3 with hook 37.
It is designed to be removably fixed to the lower part of 6. A cross-shaped groove 38 is formed on the surface of each bobbin 32 to increase the flexibility of each bobbin 32.

A clip-shaped fiber presser 39 is fitted around each bobbin 32 using this groove 38. In such an optical fiber connection extra length storage case 28, the hanging arm 33 is inserted into each arm fitting groove 3 of the case hanging holder 27.
It is suspended and supported by the case hanging holder 27 by being fitted into the case 0B. Recoated optical fiber 23.24
The extra length of the connection is wrapped around the outer periphery of both bobbins 32 and held down by a fiber presser 39, and the downward hanging portion is stored in the folded portions 368 and 36B of the cover 36, and is held by the fiber presser 39. It is held down by the band portion 36C to prevent it from popping out. The optical fiber connection part 25 is fitted and supported by a fiber connection part holder 35.

A fiber stand 40 for fitting and supporting the intermediate portion of the coated optical fiber 23 is erected on the substrate 1, and a cord stand 41 for fitting and supporting the intermediate portion of the optical cord 22 is erected.

In this optical fiber connection extra length storage device 26, each of the optical fiber connection extra length storage cases 28 is suspended and supported by the case suspension boulder 27, so that the load on the lower case 28 that occurs when stacked and supported is avoided. This can also solve the problem of negative effects on transmission loss. Furthermore, it is easy to take out a particular case 28 because each case 28 is individually suspended, lined up horizontally, and can be removed individually. Furthermore, even when inspecting the inside of each case 28, since the hanging arm 34 of each case 28 rotates within the arm fitting m30B of the case hanging support section 30, it is easy to turn over each case 28 one by one and inspect. I can do it. At this time, since the hanger 33, bobbin 32, and cover 36 have appropriate flexibility, there is no tension between them, and the turning operation can be easily performed.

(Effects of the Invention) As explained above, the optical fiber connection surplus length storage device according to the present invention allows a plurality of optical fiber connection length storage cases to be detachably hung on a case hanging holder installed horizontally. Since the lower case is not supported, it is possible to avoid a problem when the cases are stacked, where the load is applied to the lower case and adversely affects the transmission loss of the optical fiber.

Further, by suspending and supporting the case in this manner, it is possible to easily see the case by simply flipping over any case, and the desired case can be easily taken out by removing it from the case hanging holder.

[Brief explanation of drawings]

Fig. 1 is a front view with the cover cut away showing an example of an optical cable connection section incorporating an optical fiber connection surplus storage device according to the present invention, Fig. 2 is a bottom view of the open cable connection box, and Fig. 3 is a bottom view of the open cable connection box. A plan view showing an example of a case hanging holder of the optical fiber connection surplus length storage device according to the present invention, FIG.
Figure A-Ali! A sectional view, FIG. 5 is a side view of a case hanging support used in this case hanging holder, and FIG. 6 shows an example of an optical fiber connection surplus length storage case of the optical fiber connection surplus length storage device according to the present invention. FIG. 1... Board, 2... Cover, 3... White wood body, 13
... Optical cable, 22 ... Optical cord for wiring, 23.
24...Coated optical fiber, 25...Fiber connection part, 26...Optical fiber connection extra length storage device, 27...
・Case hanging holder, 28... Optical fiber connection extra length storage case, 29... Stand, 30... Case hanging support, 30A... Case hanging part, 30B... Arm fitting groove, 31 ... Board, 32 ... Bobbin, 33
...User, 34...Hanging arm, 35...Fiber connection part holder, 36...Cover, 36Δ...Side folding part, 36B...Lower folding part, 36C.
... Presser band part, 37 ... hook, 38 ... groove,
39...Fiber holder. Continued from page 1 0 Inventor: Kazuo Hashimoto Rikiuchi, Chiyoda-ku, Tokyo 0 Inventor: Yuji Sato 2-6-1 Nouchi, Chiyoda-ku, Tokyo Furukawa Electric Co., Ltd.! 1-1-6 Saiwai-cho Nippon Telegraph and Telephone Public Corporation-1''-Zokuneyamailkogare) (
0 Man) March 22, 1980 Director-General of the Patent Office Kazuo Wakasugi 1, Indication of case Patent VId59-2427682, Name of invention Optical fiber connection surplus length storage device 3, Relationship with the amended person case Patent application Person (529) Furukawa Electric Co., Ltd. (1 other person) 4. Agent, 6th floor, Expenditure Building, 4-31-6 Shinbashi, Minato-ku, Tokyo. 6. Contents of the amendment. Mei III printed in the specified size. (No change in content.) amended as shown in the attached sheet. / Is J・t+Q'? ＼・

Claims (1)

[Claims] 1. An optical fiber connection excess length storage device, characterized in that a plurality of optical fiber connection excess length storage cases are each removably suspended and supported on a case hanging boulder installed horizontally.