JPS5935511A - Method of switching and connecting communication cable and connector therefor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of switching and connecting communication cables using a connector that can connect live wires without disconnecting them, and a connector thereof.

2. Description of the Related Art Conventionally, a connector used for switching and connecting communication cables is composed of an insulated copper sleeve 1 and a metal inner bottle 2, as shown in FIG. As a method of connecting a communication cable using this connector, as shown in Section 2-,
By inserting the core wires 3a and 3b from the end face of the copper sleeve 1, and press-fitting the inner bottle 2 into the core wires 3a and 3b, the core wires 3a and 3b are inserted.
and 3b were connected via the middle bottle 2. Note that FIG. 3 is a diagram showing the connection form. In this way, the conventional connector has a structure in which the core wires 3 a y 3 b are inserted from the end face of the copper sleeve 1, so it is possible to install the core wires into the connector without cutting the existing cable cores when switching and connecting the communication cable. This had the disadvantage that live-line switching connections were slow.

Therefore, in order to make a switching connection, in order to prevent a momentary disconnection of the live line, connect the live existing cable line and the new cable line to be switched at one of the two cable switching points using a multi-sol connection with two hands. Then, at the other switching point, we connected the new cable by hand and soldered it, and after the switching was completed, we removed the multi-sol connection at one switching point, soldered it, and covered it with a sleeve for insulation. was.

Therefore, the switching and connection work takes time and requires skill, so there are drawbacks such as large individual differences.

In order to eliminate these conventional drawbacks, the present invention can be installed in a connector without cutting the live wire to be switched, and can cut off the unnecessary excess length of the core wire within the connector at the same time as connection. By using an easy-to-work connector that can perform live line switching, the existing cable and new cable can be connected at one switching point and automatically connected at the same time at the other switching point. In this configuration, switching connection is performed. An embodiment of the present invention will be described in detail below with reference to the drawings.

Figure 4 shows the body part of the connector used in the present invention, (4) is a front view, (B) is a plan view, and (C) is a side view.
It is a front view. In the figure, reference numeral 4 indicates a wire diode made of an insulator, and a pair of grooves 4a y 4b are provided on the upper surfaces of both sides of the pair, into which the core wires for connection are attached.
, 4b, a core wire connecting element 5 is installed in a direction perpendicular to the core wires. As shown in FIG. 5, this core wire connecting element 5 has a U-shaped groove 5a provided on an extension line of the grooves 4a and 4b in a metal piece such as phosphor bronze, and the core wire is left insulated and coated. When the groove 5a is press-fitted, the insulation coating is torn and the core wire and the element 5 are electrically connected. FIG. 6 similarly shows a part of the crimp cover in the connector, with (4) being a front view, (B) being a bottom view, and (C) being a side view. In the figure, a crimping cover 6 is made of an insulator like the body 4, and is press-fitted onto the body 4 so that the PS 4 and the cover 6 are fitted and fixed. In addition, since the core wire attached to the groove 5a of the element 5 is press-fitted into the groove 5a when the cover 6 is press-fitted into the body 4, the cover 6 is provided with a pair of wires spaced apart by the width of the element 5 so as to sandwich the element 5. A pair of protrusions 6a are provided, and a blade 7 for cutting unnecessary extra length of the press-fitted core wire is provided on the protrusion 6.
It is provided in parallel with a. Of course elements 5 and B
'y 7m "Ig"', 'd may also be used.

The connection of the core wires to such a connector will be explained with reference to FIGS. 7 and 8.

First, as shown in FIG.
Attach it on top of a. Then, as shown in FIG. 8, the crimping covers 6 are overlapped and pressure is applied with a crimping tool, etc., so that the core wires 8,
9 is press-fitted into the groove 5a of the core wire connection element 5 by the protrusion 6a of the crimping cover 6. At this time, the insulation is broken at the nip at the entrance of the groove 5a, and the two core wires 8 and 9 are connected through the core wire connecting element 5 by being press-fitted further into the groove 5a. Next, the wire cutting blade 7 of the crimping cover 6 cuts off the necessary extra length inside the connector, and the core wire 8
and complete the connection of 9.

Next, a switching connection method according to the present invention will be explained.

FIG. 9 is a pattern diagram of a cable switching connection, and in the figure, 10911 indicates a switching point. FIG. 10 is a conceptual diagram showing a switching connection method according to the first aspect of the present invention using the aforementioned connector, taking as an example a case where switching points 10 and 11 are connected by a conventional connector A.

First, as shown in Fig. 9 and Fig. 1O, the existing cable line 9
Attach the extra length core wire of the hanging portion connected with the conventional connector A (see Fig. 1O) and the new cable core wire 8 to the connector at the core wire grasping point 12 of one switching point 10, 1st
As shown in Figure 1, when the crimping tool 13 is used to make the crimping connection, the contacts (not shown) attached to the crimping tool 13 are closed, and a signal oscillator 14 connected to the crimping tool I3 is connected in advance to the other switching point 11. Multiple signals are sent to the prepared control line 15.

At the other switching point 11 a signal is received in the control device of the crimp connection machine 16 and activates the crimp connection head 17 . At this time, the crimp connection head 17 has a newly installed cable core #
When the connector 8 and the existing cable core 9 are installed, the existing care pull 9 and the new cable 8 are connected.
core wires are connected, and the live switching connection is completed. Further, at two switching points 10 and 11, the unnecessary excess length of the removed core wire and the newly installed cable is cut within the connector by a core wire cutting blade 7 provided on the cover 6 of the connector. Hereinafter, repeating the above procedure for the number of cores to be switched sequentially,
The switching connection between two points is terminated.”

As explained in detail above, at switching points such as connection points or cable passage points that have already been connected with conventional connectors, crimp connection at one switching point completes connection at the other switching point, The line can be automatically switched from the existing cable to the new cable, and there is no need to remove the multiple connections and insulate them with a sleeve after the switching connection is completed, as was the case in the past. Wires and newly installed cables I) Unnecessary excess length of wires can be cut within the connector, which significantly improves work efficiency, shortens the work time for switching connections, and has the advantage of making work uniform due to connector connections. be. Further, the connection method using the connector of the present invention can be applied as is to the normal connection of newly installed cables, and has the advantage of enabling efficient connection work.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional exploded view showing a conventional connector, Fig. 2 is a sectional view showing its connected state, Fig. 3 is a connection form thereof, and Fig. 4 is an embodiment of the present invention. (5) is a front view, (B) is a plan view, (0 is a side view, FIG. 5 is a perspective view showing the core wire connection element, and FIG. 6 is a diagram showing the present invention). A part of the crimp cover of the connector showing one embodiment is shown, (A) is a front view, (B) is a bottom view, (C) is a side view, and Fig. 7 shows the connection process in the connector of the present invention. , Figure 8 is the connection state diagram, Figure 9 is the /? turn diagram of the cable switching connection,
FIG. 10 is a conceptual diagram of the connection method of the present invention, and FIG. 11 is a configuration diagram thereof. 4... Dedi, 4at4b... Groove, 5... Core wire connection element, 5a... Groove, 6... Cover for crimping, ' 5 a... Protrusion, 7... Blade, 8...New cable core, 9...Existing cable core, 10...
One switching point, 11... Other switching point, 12... Core wire grasping point, 13... Crimping tool, No. 4... Signal oscillator, 15... Control line, 16... Crimp connection machine, 12
...to the crimp connection. Figure 1 Figure 2 Figure 3 Figure 4 (B) Figure 5 S and Figure 6 (A) (C) 6 (・) 7 - Figure 9 Figure 10 Figure 11

Claims (2)

[Claims] (1) A core wire connecting element with a set of U-shaped grooves in a metal piece and a blade for cutting unnecessary extra length are attached to either of the insulator body parts and a part of the crimping cover. First, the core wires for connection are mounted on the grooves of the element with their insulation coatings intact, and by overlapping a part of the cover and the body part and press-fitting them with a crimping tool, the coating of both core wires is broken and the two are separated. A connector that can be connected and cut off the excess length with a blade, and this connector can be used simultaneously at two cable switching points, and a signal oscillator that is linked to a crimping tool when connecting one switching point is prepared in advance. A signal is sent to the other switching point via the control line), and at the other switching point, the control device of the crimp connection machine receives this signal, activates the crimp connection, and connects the existing cable to the new cable in advance. At the same time as the core wire is attached and the connector is crimped and connected, the core wire on the removed side and the unnecessary core wire of the newly installed cable are cut, so that live switching connections can be made at the same time at two switching points. Characteristic communication cable switching connection method 0 (2) A body part made of an insulator that is fitted and fixed by press-fitting and a cover for crimping, and a pair of grooves on both sides of the body part for attaching the connecting wires. , a core wire connecting element made of a metal piece having a pair of U-shaped grooves is inserted into the extension line of the groove by press-fitting the core wire with the insulation coating on, thereby breaking the insulation coating and contacting the core wire. 1. A connector that is attached inside the crimping cover, and a portion of the crimping cover is provided with a protrusion for press-fitting the core wire into the groove of the element and a blade for cutting the excess length of the core wire.