JPS5951493A - Method of connecting cable core wire and connecting terminalthereof - 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 for connecting cable cores such as communication cables or power transmission and connection circuits, and a useful connection terminal used for the connection.

In general, electric wires are often damaged by corrosion, arcing, or vibration, and it is necessary to perform inspection and maintenance from time to time. At that time, it is common to cut and remove the damaged cable and connect a new cable to repair it. It will be done. Conventionally, various methods have been adopted as methods for connecting communication cable cores in such cases. For example, ■ Strip the insulating coating, twist the core wires together, solder the top, cover it with an insulating sleeve, and make a compression connection.

■ A method of connecting by inserting a core wire into an insulating case made with a specified structure and press-fitting a cap into it.

■ A method of connecting by inserting a core wire into a pipe with a specified structure and driving a tapered bottle with a threaded outer periphery inside the core wire.

■ Another connection method is to insert the core wire end into the sleeve and twist the sleeve together.

etc. are known as simple methods.

However, in any of these connection methods, the current situation is that the core wires are cut and then the core wires are connected.

The currently installed communication cables have been installed for a long time and have suffered damage and deterioration, so cable replacement maintenance is required, and in order to disconnect the current core wire and connect it to the switched core wire, borrowing is required for each line. However, ``borrowing measures are extremely difficult and construction takes a long time, and even if you choose a time when the line is infrequently used, it differs depending on the subscriber, making it difficult to borrow lines at the same time.'' It requires a lot of effort.

In recent years, there has been an increase in the number of leased lines in which a large number of terminals are connected to different accommodation stations on long-distance lines, and information is exchanged between the terminals. Because these lines transmit and receive information signals as a whole, disconnecting one terminal or a section of the line will stop the system as a whole, which could have a fatal impact on the system as a whole. This is a serious drawback.

The present invention eliminates the shortcomings of these conventional connection means, makes it possible to replace the current cable without disconnecting the line, and allows emergency measures to be taken in the event of a breakdown easily and quickly. The object of the present invention is to provide an effective cable core connection method that is safe and free from erroneous operation, and a terminal used for the connection.

The present invention provides a method for inserting the coated core wires of an existing cable to be repaired and a switching cable as they are into a terminal body with a connector without peeling off the coating, and the connector is made of a conductive material and is provided in an energized state. At the same time as the fitting, the coating is peeled off and the core wire is attached in contact with the connector, and then a part of the existing cable between the connectors is cut within the terminal body and this cut cable portion is removed from the terminal body. This is a cable core connection method characterized by:

Further, as one of the important features of the present invention, a terminal body made of an insulating material is provided with a connector made of a conductive material in order to make an effective connection, wherein the connector is a conductive piece with a peeled-off portion. and a conductive plate connected and coupled thereto, the conductive plate is formed into a receiving part into which the coated core wire can be inserted, and the core wire is held between the conductive pieces, and the core wire is held between the conductive pieces. It is an object of the present invention to provide a connecting terminal characterized in that a connecting terminal lid is provided with a low weight and can be fitted onto the terminal body for holding the terminal body.

To explain the specific example shown in FIGS. 1 to 7, when repairing a predetermined interval of an existing cable A, an insulating terminal body 2 having a connector 1 made of conductive material at a predetermined interval position is removed from the cover 9a. Similarly, the switching cable B for renewal is also inserted into the terminal main body 2, and the coatings a of both cables A and H are peeled off to the connector 1, and at the same time, the core wires are brought into contact with each other. 9 - After the terminal cover 6 is closed and installed under the condition of Alternatively, by removing the connector 1, it is possible to replace and connect the existing cable to the switching cable B without even momentarily cutting off the existing cable, eliminating the soldering work and eliminating the work of stripping the insulation and covering the insulation. It can be done in a number of ways. In this case, if the length of the cut cable part is long, two terminal bodies 2 may be used at isolated positions; if the length is short, for example, if the terminal body 2 is between the connectors 1 and 1 which are in a conductive state, the terminal body 2 may be used as a terminal. If this is done between a plurality of connectors provided on the main body 2, only one terminal main body 2 can be used. Further, the terminal body 2 may have a single connector 1 or a plurality of connectors 1, but in the case of multiple connectors, attaching them across the cable increases the safety of cable fitting and the maintenance of a good conductive connection state. .

The connector 1 has a coating peeling part, for example, a sharp jagged surface or a cutter part 1 such as a thread, a groove, or a protrusion. A conductive pin and a conductive plate connected to the conductive pin 1. Tokarana-10- Li, the conductive plate 1. A part of the conductor is bent and stands up so as to serve as a fitting and receiving part for the coated conductor, and the conductor is held between the conductive pins. The terminal body 2 is fitted into a terminal body 2 formed in a letter-shaped case body. The terminal main body 2 is a rectangular or semi-cylindrical case body along the cable, and has openings 2I for leading out the cable on both end walls and the conductive plate 1. A recess into which the 2. and a recess 2 into which the terminal cover 3 is fitted. is formed on the inner surface to properly and firmly cover the connecting part of the core wire, and there is a space 2. in which the existing cable can be cut inside the terminal body 2. are located adjacent to both end walls.

Furthermore, the terminal cover 6 fitted onto the terminal body 2 is connected to the connector 1.
Recessed portion 6. and conductive plate 1. and a convex portion 6. which is fitted into the recess 23 of the terminal body 2. Also, a stopper as a fixing means after fitting, for example, the insertion hole 61
The protrusion 52 and the presser concave surface 33 are provided in combination.

In these cases, all the uneven parts may be provided on either the terminal main body 2 or the terminal cover 11-3 as long as they are selected depending on the relative relationship of the fitting surfaces.

Note that the insertion space for the cables A and B in the terminal body 2 is formed in parallel grooves on both sides of the conductive pin, but if necessary, a groove may be formed in the center of the conductive pin. A type in which both cables are inserted vertically overlapping each other may also be used.

In any case, the connector 1 has a cutter section for peeling off the coatings a of the cables A and H, and is designed to maintain good conductive contact and attachment.

In addition, the conductive bottle as a conductive piece uses a conical or pyramidal protrusion to maintain the insertion of the coated core wire, create gaps corresponding to various core wire diameters of the cable, and effectively peel off the coating. It is considered that it will be set up as follows.

In the figure, 11 is a hole for connecting a conductive pin, and 12 is a holding protrusion for the conductive plate.

The examples shown in FIGS. 8 to 13 show a conductive plate 1.0 as a conductive pin of the connector 1. A part of the conductive plate 1° is bent and erected in a state where the coated core wire is engaged so that the contact state is maintained. In this case, as shown in the example in Fig. 1, it may be formed by making cuts and standing upright on both sides in a continuous state, or by bending a punched conductive plate as shown in Fig. 10, as shown in Fig. 9. It may be configured as follows, in which a tapered fitting groove is used as the cutter portion 11 for separating the cable to be connected a.

Note that the tapered insertion groove is convenient because it can be easily applied even if the diameter of the cable core is different, and a good connection state can be maintained. Further, it is convenient to use the fittings shown in FIGS. 11 to 13 as the terminal cover 6, since the cable can be held safely and conductively connected at the same time.

In the figure, 32 is a protrusion, 33 is a presser concave surface, and 34 is a hollow portion.

In the embodiment shown in FIGS. 14 to 20, a terminal cover 3 is permanently attached to the terminal body 2 in a removable manner, and when a cable is connected, the terminal cover 3 is removed from the terminal body 2 and opened. By inserting the cable further and press-fitting the cover again, the covering a can be peeled off and the core wire can be attached to the contact, making it easier to handle when using machines or processing tools. It is a formalized form.

In this case, the terminal cover 3 is removably covered with the uneven or stepped fitting part 13, removed with a tool, and then press-fitted again to adjust the press-fitting depth to connect the cable. If necessary, instead of this temporary fixing mechanism, the terminal body 2 and the terminal cover 3 may be connected integrally with a connecting body (not shown) to prevent the cover from falling off during storage. Another preferred example is to simplify the lid closing operation.

In the figure, 21 is a protrusion and conductive plate 1. It becomes a stopper.

22 is a cut, and 33 is a concave surface of the presser foot.

When replacing or repairing a cable, the present invention makes it possible to update the existing cable to a new cable without a momentary interruption while the existing cable continues to function as it is for transmission and power transmission, and greatly simplifies the core wire connection work. It also eliminates the conventional complicated work of soldering, stripping the cable sheathing, and covering the sleeves and tape sheathing.Furthermore, by installing the Connection-14 terminal, all the connection work can be done in one step. Go to,
It is easy to handle, there is no post-processing work required for repairs, and cut and unused cable terminals are built-in and insulated within the terminal body, significantly increasing safety without causing unexpected accidents. It has the advantageous effects that it can be replaced without having to step on it, and that the connecting terminal is simple in structure and can be provided in a form suitable for mass production at low cost.

[Brief explanation of the drawing]

Figure 1 is a plan view of the connecting terminal, Figure 2 is a side view, Figure 3 is a vertical cross-sectional view taken along line 1-1 in Figure 1, Figure 4 is a partially cutaway slope view, and Figure 5 is a separated state. 6 is a side view of the connection terminal cover, FIG. 1 is a bottom view thereof, FIG. 8 is a partially cutaway slope view of another embodiment, FIG. 9 is a plan view of its conductive part, and FIG.
The figure is a developed plan view, Figure 11 is a side view of the terminal cover, and Figure 1 is a side view of the terminal cover.
2 is a bottom view thereof, FIG. 13 is a vertical sectional view taken along the line 1-1 in FIG. 11, FIG. 14 is a front view of another embodiment, FIG. 15 is a side view thereof, and FIG. 16 is a plan view. 17 is a plan view of the terminal case, FIG. 18 is an expanded plan view of the terminal conductive plate, FIG. 19 is a cutaway front view of the terminal cover, and FIG. 20 is a bottom view thereof. A...Existing cable, B...Switching cable, a...
- Covering, b... Core wire, 1... Connector, 11... Cutter part, 1. ... Conductive plate, 2... Terminal body, 21.
...Aperture, 2. ... recess, 23 ... recess, 24 ...
・Space, 3...Terminal cover, 6.・・・Concavity, 3,・
... Pressing portion, 63... Convex portion. Patent applicant: Tokyo Tsushin Kozai Co., Ltd. Representative Patent Attorney Go Hatayama - Patent Attorney
Thousand 1) Minoru = °λ JP-A-59-51493 (7)

Claims (1)

[Scope of Claims] t. The coated core wires of the existing cable to be repaired and the switching cable are inserted as they are into the terminal body with the connector without peeling off the coating, and the conductive material is installed in a energized state. At the same time as the connector is fitted, the coating is peeled off and the core wire is attached in contact with the connector, and then a part of the existing cable between the connectors is cut within the terminal body and this cut cable portion is removed. A method for connecting cable core wires, characterized in that the cable core wires are removed from the terminal body. Z The contact attachment of the coated core wire to the connector is such that the coated core wire is inserted into the terminal body where the connector is located in a state where it is in contact with the contactor, and then a terminal cover is fitted to fix the connection. A connection method according to claim 1. (5) The contact attachment of the coated core wire to the connector is performed by inserting the coated core wire together with the coated core wire of the switching cable into the terminal body having at least a plurality of connectors as described above in 2- above, spanning between the connectors. 3. A connection method according to claim 1 or 2, wherein 4. The contact attachment of the coated core wire to the connector is performed by attaching the connector to at least a plurality of locations on the existing cable, and the insulation coating is peeled off from the circumferential surface of the connector to remove the core. 4. The connection method according to claim 2 or 3, wherein the connector is brought into direct contact with the wire. 5. The contact attachment of the covered core wire to the connector includes inserting the coated core wire in parallel into the terminal body where the contact is located, and attaching the coated core wire to the contact at the same time using a terminal cover.
The connection method described in any one of Items 4 to 4. & When attaching the coated core wire to the terminal body, remove the terminal cover temporarily fixed to the terminal body, open it, insert the coated core wire through the opening, and insert the terminal cover into the terminal body. The connection method according to any one of claims 2 to 5, wherein the connection method is fixed. Z A connector made of a conductive material is provided in a terminal body made of an insulating material, and the connector is composed of a conductive piece with a peeled-off part and a conductive plate connected to the conductive piece, and the conductive plate is connected to the conductive piece. A receiving portion into which the coated core wire can be inserted is configured to sandwich the core wire between the conductive pieces, and a connection terminal cover that can be fitted onto the terminal body is fitted to hold the core wire. A connection terminal characterized by being freely provided. (a) The connecting terminal according to claim 1, wherein the terminal body is a case body made of a polycarbonate synthetic resin material and having a U-shaped cross section, and has openings on both side walls for leading out the coated core wire. 9. The connection terminal according to claim 7 or 8, wherein the conductive piece is a conductive pin that is fitted and protruded from the conductive plate, and a plurality of conductive pins are provided in the axial direction of the core wire. 1[l The conductive piece is made of a conical body and has an annular or spiral engaging groove or protrusion formed on its circumferential surface to serve as a coating peeling part. 9
A connection terminal described in any one of the following paragraphs. 11 The conductive plate has a fitting hole into which the conductive piece is fitted, and has side pieces that stand up on both sides of the conductive piece, and is fitted into a groove in the terminal body. A connection terminal according to any one of claims 7 to 9. 12. The connection terminal cover is fitted onto the terminal body, and has a protrusion that includes a coated core wire and fits between the conductive piece and the conductive plate. A connection terminal according to any one of the ranges 7 to 11. 13. The conductive piece according to claim 7 or 8, wherein the conductive piece is an upright plate having wedge-shaped grooves that bite into the coated core wire, and the grooves are arranged in parallel. Connecting terminal. 14. The connection terminal according to any one of claims 1 to 13, wherein the terminal main body has a terminal cover that is temporarily fixed in a detachable manner at a fitting portion.