JPS6119497Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cable with a plug, in which a plug used in a subscriber switching connection board provided in a telephone subscriber line network is connected in advance to the cable end.

In a telephone subscriber distribution network, in order to make effective use of lines in response to changes in the number of subscribers, it is usual to provide a switchable connection point at the boundary between feeder cables and distribution cables, or in the middle of the feeder cables. . This switching connection is performed in a box called a switching connection board installed on a utility pole or on the ground, and inside the box, hundreds to thousands of pairs of insulated core wires drawn out from the cable are connected to each other. ing. This fiber connection is performed by hand twist soldering or multi-fiber connector connection, but since the hand twist soldering method connects each fiber individually, the fibers are not only intricately intertwined, but also difficult to organize. Reconnection when switching core wires is time consuming, and since the core wires are cut when reconnecting, problems arise regarding the overall length. The connector connection method uses a removable connector connection to eliminate the disadvantages of the hand twist soldering method.The receptacle connected to one cable is fixed in the connection board, and the receptacle connected to one cable is plugged into the core wire of the other cable. This method involves connecting the cable and inserting the plug into the receptacle. However, with this method, connectors are attached and terminated to hundreds to thousands of pairs of insulated core wires, so the number of branch-terminated plugs on the plug-equipped cable side is extremely large, making packaging and transportation difficult and causing accidents during transportation. In addition, it becomes complicated to accommodate it in the connection board. In addition, the receptacles must be arranged in several rows due to space issues within the switching connection board, and in this case, depending on the direction of the plug-attached cable, the plug may become directional, making it necessary to twist the branch cable.

The object of the present invention is to provide a cable with a plug that has a structure that improves the above-mentioned drawbacks.

The cable with a plug of the present invention branches the end of the cable into plug units (for example, several pairs to several tens of pairs), terminates the plug with connection pieces on both sides, and coats the branched insulated core bundle with a protective coating. The branch fixing part has a hook for fixing the branched insulated core bundle and the cable and is installed in the switching connection board, and also has an introduction part in the position of the cable part to engage with the switching connection board. The present invention will be explained below based on the drawings.

FIG. 1 is a drawing showing the structure of a cable with a plug according to the present invention, in which a is a plan view and b is a front view. As shown in the drawing, an introduction part 15 is attached at a position where the cable 10 passes through the outer box of the switching connection board, and the cable is fixed to the switching connection board. cable 10
A hook 141 is provided at the part where the branch cord 12, which is made by branching the insulated core wire into the unit of the plug 11 and applying a protective coating, branches to fix the branch cord and the cable.
A branch fixing portion 14 is provided. A plug 11 is connected to the tip of the branch cord 12, and the plug 11 is housed in a plug housing case 13.

The plug 11 of the present invention is shown in FIG. 2, and the flat body 11 has plug connection pieces 111 on both sides.
are connected to the insulated core wires of the branch cord 12, respectively. A recess 112 is formed in the plug 11 and is adapted to engage with a protrusion 131 in a receptacle or a plug housing case. FIG. 3 shows the state in which this plug 11 is fitted into the receptacle 2. An insulated core wire 41 from a cable is connected and terminated to the cantilevered receptacle connection piece 21, and the connection piece 111 of the plug 11 is connected to the insulated core wire 41. The insulated wire 121 from the branch cord 12 is terminated in advance, and when the plug 11 is inserted into the receptacle 20 and fitted, the receptacle connection piece 21 and the plug connection piece 111 come into contact 5 and the insulated core wires mutually connect. connected to. As can be seen from this structure, the plug connection pieces 111 are on both sides of the plug 11, so the plug 1
Even if 1 is rotated 180 degrees and mated, receptacle 20
Contact will be maintained. The plug housing case 13 has a structure shown in FIGS. 4a and 4b, and has many parallel cavities 133 to accommodate the plug 11, and the convex part 131 inside the cavity engages with the concave part 112 of the plug 11 to fix it. It is becoming more and more common. On both sides of the plug housing case 13 there are engaging protrusions 1 that can be installed on the switching connection board or used during packaging or transportation.
I have earned 32.

FIG. 5 shows an embodiment of a switching connection board using a cable with a plug according to the present invention.

The receptacle 20 terminated to the cable 4 is fixed to the switching connection board 31. When the switching connection board accommodates a large number of fiber pairs, it is necessary to arrange the receptacles in two or more rows as shown in the drawing. The cable with a plug 10 has a plug 11 in a plug housing case 13
the branch fixing part 14 with the hook 14.
1 and further fixed to the switching connection board 31 using the introduction part 15. Plug storage case 13
As shown in the drawings, the plug 11 is attached to the plug housing frame 32 in the switching board using the engagement protrusion 132 of the plug housing case.
Next, when a predetermined plug is removed from the plug housing case and inserted into a predetermined position in the receptacle, both cables can be connected. In that case plug 11
has connecting pieces on both sides, so even if the receptacles are arranged in two or more rows, they can be easily connected to the plug-equipped cable without having to separate the left and right sides.

As explained in detail above, the cable with a plug of the present invention has the following effects by providing connection pieces on both sides of the plug, using a plug housing case, and providing a hook at the branch fixing part.

(1) Connection pieces are provided on both sides of the plug, so even if receptacles are arranged in two or more rows in the switching connection board, there is no need to separate left and right cables into the cable with the plug.

(2) Since the plugs are organized and housed and engaged in the plug housing case, when the cable with the plug is packed and transported, it can be easily fixed in blocks, and damage caused by vibration can be prevented.

Furthermore, by engaging and fixing the plug housing case to the switching connection board, the plugs in the switching connection board can be organized.

(3) Since the branch fixing part has a hook for the switching connection board, the cable branch can be easily positioned and installed in the switching connection board.

[Brief explanation of the drawing]

FIGS. 1a and 1b are a plan view and a front view showing the structure of a cable with a plug according to the present invention. Figures 2a and b are a plan view and front view of the plug, Figure 3 is a detailed sectional view showing the connection part where the plug is fitted into the receptacle, and Figures 4a and b are a plan view and front view of the plug housing case. The right half of FIG. 4b is a sectional view taken along line A-A.
FIG. 5 is an internal configuration diagram showing an example of a switching connection board using a cable with a plug according to the present invention. 10: Cable, 11: Plug, 111: Connection piece, 112: Engagement recess, 12: Branch cord, 12
1: Core wire, 13: Plug accommodation case, 131: Convex part, 132: Engagement convex part, 133: Plug accommodation cavity, 14: Branch fixing part, 141: Hook, 1
5: introduction part, 20: receptacle, 21: cantilever connection piece, 30, 31: switching connection board, 32: frame, 40: main cable, 41: core wire, 5: contact part.

Claims (1)

[Scope of utility model registration request] In a multi-pair communication cable used for a switching connection board installed in a telephone subscriber distribution network, the cable end is branched into several pairs to several tens of pairs of insulated core wire bundles and a protective coating is applied to each branch cord as a branch cord 12. ,
A flat plug 11 connected to each of the plurality of core wires for each branch cord 12 and having connection pieces 111 exposed on both sides in parallel is attached to the tip of each branch cord, and hung on the switching connection board at the branch part of the cable. Cylindrical branch fixing part 14 with a lowering hook 141
A cylindrical introduction part (metal fitting) 15 for fixing the cable and introducing and fixing the cable to the switching connection board at a certain length from the cable branch fixing part to the cable side.
is fixed, and a plurality of the plugs are connected to the engaging protrusion 13.
2 and a plurality of parallel plug accommodation cavities 1
3. A cable with a plug for a switching connection board, characterized in that the cable is housed in a plug housing case 13 having a plug.