JPS6155607A - Light distributing board - Google Patents

Abstract

PURPOSE:To make the shape slim and to enable simple connection and housing of a light cord by providing a light connector plate provided with an adapter at the center of a slender box and providing a cord holder for winding excess cord allowing free oscillation. CONSTITUTION:A light connector plate 6 provided with a light adapter 7b connected with a light plug 7a is attached in the middle of a slender box 3 and a light cord holder 8 that houses excess cord is supported by a shaft 11 in the upper part to allow free oscillation. IN this constitution, as a lower-side light cord 5 has no excess length, it is connected directly to the connector plate 6. In the case of an upper-side light cord 4, the holder 8 is brought to the front, and housed after winding the excess length, and the light plug 7a of the cord 4 is connected to the adapter 7b. Thus, the shape becomes slim, and the light cords 4, 5 can be connected and housed simply.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to optical distribution following the connection between the original fiber cable C (hereinafter abbreviated as "optical cable") and the optical transmitting/receiving section of the terminal equipment in an optical communication system. The present invention relates to panels, and in particular to an optical distribution panel with a simple box-shaped block structure that can be mounted on a narrow slim frame.

[Conventional technology]

In optical communication systems, from the point of view of construction such as laying optical cables and installing terminal equipment, it is important to
toft and the transmitter/receiver section are usually connected via an optical distribution panel. An optical distribution panel consists of an optical fiber cord connected to an optical cable and an optical fiber cord connected to an optical transmitter/receiver (hereinafter both abbreviated as "optical cord"). ,,The original connector plug C attached to the end of these optical cords is
They are connected to each other through an optical connector board that is provided with a large number of optical connector adapters (hereinafter abbreviated as "optical adapters") for connecting two optical fibers (hereinafter referred to as "optical adapters"). In the case of these optical cords, especially the optical cords that are connected to optical cables, a large margin should be provided, taking into account the extra length for rounding the splicing connection with the optical cable and the extra length for wiring up to the terminal equipment. There is an old-fashioned person,
Therefore, preserving the extra length of this element is an important issue. For this reason, conventional optical distribution boards have been constructed by placing the original connector board vertically, connecting the optical cords on both the left and right sides of the original connector board, and then connecting the remaining length of the original cord to the left and right sides of the optical connector board in multiple stages. It is configured to be rolled up and stored and held on a cord support plate.

[Problem that the invention seeks to solve]

In recent years, slim racks with a width of, for example, 120 mm are often used in terminal equipment of optical communication systems. However, with the conventional structure described above, it is difficult to realize such a slim optical distribution panel. For this reason, the current situation is that terminal equipment is configured with a mixture of slim racks and wide racks, and there are many problems in mechanical design, appearance, and cost. In other words, it is intended to realize an optical distribution panel that has a slim shape that can be mounted on a slim rack and that can easily connect, hold and store optical cords.0 [Means for solving the problem] ] In order to solve the above-mentioned problems, the optical distribution panel according to the present invention has a front surface configured to introduce and store optical cords connected to optical cables and optical cords connected to an optical transmitter/receiver from the rear side. Inside the vertically elongated housing that can be opened and closed and can be attached to a slim rack, the original connector board with an optical adapter for connecting the original plugs at the ends of the original cords is installed horizontally in the vertical middle of the housing. Furthermore, a plurality of optical cord holders for wrapping and holding the extra length of each party cord are supported at the upper end of each on a support shaft so as to be swingable in the front and back direction, and can be taken out to the front side of the housing. It has a unique structure.

[For production]

According to the above structure, it is possible to have a slim shape that can be mounted on a slim frame with a width of 120 mm, for example, and after taking out the original cord holder from the housing and wrapping the optical cord around it and holding it. By storing the original cord holder in the housing and connecting the original cord to the original connector board, it is possible to easily connect and hold and store the optical cord.〇 [Example] Please refer to the drawings below. Examples of the present invention will now be described in detail.

FIG. 1 is a perspective view of an embodiment of a light distribution panel according to the present invention. In the figure, the symbol l indicates a slim frame with a width of 120 am, and the frame is a slightly hollow frame made of groove-shaped members with 7 flanges. The distribution board is shown, and has a slender housing of 3 feet above and below with a width of 120 rows.

The casing 3 has an opening on the front side, and is attached to the front side of the rack 1 on the back side with through bolts 3a (three in the illustrated example). Although a front cover is detachably attached to the front side of the housing 3 with screws, FIG. 1 shows the state in which the front cover is removed, and the front cover is not shown. Further, reference numeral 4 is spliced and connected to an optical cable (not shown), and an optical cord (pig till; -
The reference numeral 5 indicates the original cord connected to the optical transceiver unit (not shown) of the end station equipment. It is introduced into the housing 3 from the upper and lower parts and is housed therein.

Further, a connector plate 6 of 1 lcft is fixed horizontally at an intermediate position in the vertical direction of the housing 3. This optical connector board 6 is provided with a plurality of original adapters 7b for connecting the optical plugs 7a attached to the ends of the respective party cords 4 and 5. The F optical cord 4 and the optical cord 5 can be mutually coupled.

Furthermore, a plurality of original cord holders 8 are provided in the upper chamber of the housing 3. As particularly shown in FIG. 2, the optical cord holder 8 has a cord wrapping plate 9 and a cord detachment prevention plate lO. The cord wrapping w9 has a convex wrapping portion 9 in the center.
a, 7 lunges 9b on the front and back (left and right in Figure 2), L on the upper side
It has a letter-shaped arm 9c and an ear 9dTh at the front lower end, and the original cord 4 is wrapped around the winding part 9a and around the flange 9b as shown in the figure.
wrapped around the inside of. Further, the cord detachment prevention plate 10 is fixed to the winding portion 9a of the cord winding plate 9 with screws 10a. However, the record retaining plate 10 can be opened and closed by turning it by hand, and after opening as shown in FIG. 2(A) and wrapping the original cord 4 around the cord wrapping plate 9, it is closed as shown in FIG. 2(B). can hold the F optical code 4. As shown in FIG. 1, the original cord holder 8 is provided at the tip of the arm 9c of the cord wrapping plate 9 on a support shaft 11 provided inside the housing 3, so as to be able to swing freely in the front and back direction. By pinching the ears Qdi of the rainbow cord winding plate 9 with one's hands, it is possible to take them out from the front side of the housing 3 as shown in the figure. still,
When you move your hand, the Jjic 8 holding the original cord is stored in the housing 3 by its own weight, and its rear side hits the stopper 12 (see Figures 1 and 2, port C) installed inside the housing 3. Retained. In the normal storage state, the optical cord holder 8 is held almost stationary by being held between the stopper 12 and the front cover of the housing 3.

Next, the work of connecting and holding and storing the original cords in the above-mentioned original distribution panel will be briefly explained. First, optical code 4
and 5 are introduced into the housing 3 from the rack 1. The illustrated example is a case where the lower original cord 5 has almost no unnecessary extra length, and this optical cord 5 is directly connected to the optical connector board 5. On the other hand, the end of the upper optical cord 4 is temporarily pulled out to the front side of the housing 3. Then, take out one original cord holder 8 to the front side of the housing 3 as shown in Fig. 1, and attach the optical cord 4t to it.
After being wrapped and held, the optical cord holder 8t is housed in the housing 3 again and connected to the optical plug 7at of the original cord 4 and the predetermined original adapter 7b of the original connector board 6. After performing the same operation on the remaining optical cords 4, the front cover of the housing 3 is closed, and the operation is completed.

In the above embodiment, as mentioned above, the lower original cord 5 has no unnecessary extra length, so no holder is provided to hold it, but if the optical cord 5 is also held in the same way as the optical cord 4. If necessary, a similar optical cord holder 8 may be provided in the lower chamber of the housing 30.

Furthermore, although the optical adapters 7b on the optical connector board 6 are arranged horizontally in a straight line, if they are arranged in multiple rows back and forth or in a staggered manner, the spacing between them can be increased, making it easier to connect optical cords. Is possible.

〔Effect of the invention〕

The main distribution board of the present invention has a slim shape in the direction of the soil volume,
Since it can be mounted on a slim rack, many improvements can be made in terms of mechanical design, cost, and appearance of the terminal equipment.

Further, by providing a movable optical cord holder, it is possible to efficiently and easily connect, hold and store the optical cord despite the slim shape.

Furthermore, it has a box-shaped block structure, and has good dust resistance and appearance.

[Brief explanation of drawings]

FIG. 1 is a partially omitted perspective view of an embodiment of the main distribution board according to the present invention, and FIG. 2 is a diagram showing the optical cord holder thereof.
(a) and (b) are side views of the cord detachment prevention plate in the open state and the closed state, respectively. l... Slim rack, 2... Original distribution board, 4
, 5... Optical cord, 6... Optical connector board, 7a... Optical connector plug, 7b...
...Original connector adapter, 8...Optical cord holder,
11... Support shaft, 12... Stopper.

Claims (1)

[Claims] 1. An optical distribution board for connecting an optical fiber cable and an optical transmitting/receiving section of a terminal equipment in an optical communication system,
A vertically elongated casing that can be opened and closed at the front and can be installed on a slim frame, configured to introduce and store optical fiber cords connected to optical fiber cables and optical fiber cords connected to optical transmitter/receivers from the back. In the body,
An optical connector board equipped with an optical connector adapter for connecting the optical connector plugs at the ends of the optical fiber cords is provided horizontally in the vertical middle part of the housing, and the extra length of each optical fiber cord is An optical distribution panel characterized in that a plurality of optical fiber cord holders to be wound and held are each supported at the upper end thereof on a support shaft so as to be swingable in the front and back direction, and can be taken out to the front side of a housing.