JPH0722149A - Electric wire connection device and connection method - Google Patents

Abstract

PURPOSE:To provide a method and device for connection of an electric wire which allows generating a strong connection while a small space is required. CONSTITUTION:The conductor 7 of a main line 1 and the conductor 5 of branch line 3 are heated while pinched by a pair of electrodes 21, 23, and the main line 1 and branch line 3 are connected together. The conductor pinching surfaces 21a, 23a of the electrodes 21, 23 are provided with grooves 25, 27 having a V-section for accommodating the conductors 3, 5 of the two lines 1, 3 in such an arrangement as intersecting when the conductors 7, 5 are held pinched. The connecting work takes place in the condition that the conductors 7, 5 are intersecting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire connecting device for connecting a main wire conductor and a branch wire conductor.

[0002]

2. Description of the Related Art FIGS. 5 (a) and 5 (b) show a connection form of electric wires. In the figure, when connecting the branch wire 3 to the main wire 1, the insulating coating material of the main wire 3 is peeled off to locally expose the conductor 5, and the conductor 7 of the branch wire 3 is superposed on the conductor 5 in parallel. Connecting. In this connection, the conductor 5 of the main line 1 and the conductor 7 of the branch line 3 are connected by the connection method described in JP-A-1-32077.

The electric wire connection method disclosed in the above publication is
As shown in FIGS. 6 and 7, the conductor 5 of the main line 1 and the conductor 7 of the branch line 3 are sandwiched by the pair of electrodes 9 and 11 in parallel with each other, and are pressed and heated to form a conductor. The overlapped parts of 5 and 7 are welded. The conductor sandwiching surfaces of the pair of electrodes 9 and 11 shown in FIG. 7 are provided with the convex portion 9a on one side and the concave portion 11a on the other side to position the conductors 5 and 7 during welding.

By the way, when connecting the branch line 3 to the main line 1, when arranging the branch line 3 parallel to the main line 1 as shown in FIG. 5B, or as shown in FIG. 5A. In some cases, the branch line 3 may be crossed with respect to the main line 1 for installation. Main line 1
When the branch line 3 is installed in parallel with respect to the
Also, since they are overlapped and welded in parallel, an unreasonable force is not applied to the welded portion 13, but when installing the branch line 3 in a direction intersecting the main line 1, overlap them in parallel. The conductors were welded to each other, and the branch wire 3 was bent at a portion away from the welded portion 13. Therefore, in addition to the welded portion 13, a bent portion for bending the branch wire 3 with respect to the main wire 1 is also required, and a wide space is required.

Therefore, as shown in FIGS. 8 and 9, the conductor 5 of the main line 1 and the conductor 7 of the branch line 3 are crossed and overlapped.
It is considered that the overlapped and overlapped portion is sandwiched by a pair of electrodes 15 and 17 while being pressed and heated to be welded. In this way, by connecting the conductors 7 of the branch lines 3 to the conductors 5 of the main line 1 so that the conductors 7 of the branch lines 3 are connected to each other, a space for bending the branch lines becomes unnecessary, and the main line 1 and the branch lines 3 are crossed in a small space. You can connect in the state.

[0006]

However, the main line 1
When the conductor 5 and the conductor 7 of the branch wire 3 are welded by being sandwiched by the pair of electrodes 15 and 17 and heated to be welded, the welded portion (connection portion) 19 is thin as shown in FIG. Since it has a flat plate shape, it has a problem that the section modulus becomes small, the mechanical strength of the welded portion is weak, and the reliability in connection is poor.

In view of the above circumstances, the present invention provides a wire connecting device and a wire connecting device capable of firmly connecting a main wire conductor and a branch wire conductor in a crossed state in a small space. The purpose is to provide a method.

[0008]

In order to achieve the above object, in the invention of claim 1, a groove having a V-shaped cross section for accommodating the conductor of the main line and the conductor of the branch line is formed in the conductor sandwiching surface of the electrode. The main line conductor and the branch line conductor are provided so as to intersect each other when they are sandwiched, and the main line conductor and the branch line conductor are connected in a crossing state.

According to the second aspect of the present invention, the conductor of the main line and the conductor of the branch line are crossed and arranged between a pair of electrodes, and the conductor of the main line is provided in one of the electrodes and has a V-shaped cross section. And a groove having a V-shaped cross section provided on the other electrode, and pressing and heating the intersection of the conductor of the main wire and the conductor of the branch wire with a pair of electrodes to press and heat the main wire. The feature is that the conductor and the conductor of the branch line are connected.

[0010]

In the electric wire connecting device of the first aspect of the present invention, a groove having a V-shaped cross section is provided on the conductor holding surface of the pair of electrodes, and when holding the main wire conductor and the branch wire conductor in an intersecting state. Since the conductors of the main line and the branch lines are accommodated, when the conductors of the main line and the branch lines are welded in the intersecting state, the compressibility of each conductor can be relaxed and the section modulus can be increased at the same time. . Therefore, the mechanical strength of the welded portion is improved.

That is, when the conductor sandwiching surface of the pair of electrodes is a flat surface, the welded portion is formed in a thin flat plate shape because of its high compressibility, and the section modulus becomes small. Therefore, while the mechanical strength is lowered, according to the present invention, the section modulus of the welded portion can be increased, and the mechanical strength can be improved. Further, since welding can be performed in a state where the main line and the branch line are crossed, it is not necessary to bend the branch line, for example, and welding can be performed in a small space.

In the connecting method according to the second aspect of the invention, the conductor of the main line and the conductor of the branch line are arranged in a state of intersecting between the pair of electrodes. The conductor of the main line is accommodated in the groove having the V-shaped cross section of one electrode, and the conductor of the branch line is accommodated in the groove of the V-shaped cross section of the other electrode. The intersection is heated while being sandwiched by a pair of electrodes. This allows
The conductor of the main line and the conductor of the branch line are welded in an intersecting state.

[0013]

EXAMPLES Examples of the wire connecting device according to the present invention will be described below.

As shown in FIG. 1, in the wire connecting device according to the present invention, the conductor holding surface 21 of the pair of electrodes 21, 23 is sandwiched.
Grooves 25 and 27 having a V-shaped cross section are provided in a and 23a. The width of the grooves 25, 27 in which the conductor 7 of the main line 1 and the conductor 5 of the branch line 3 are raised on the conductor sandwiching surfaces 21a, 23a when the conductor 7 of the main line 1 and the conductor 5 of the branch line 3 are accommodated. The size and depth are set.

When the conductor 5 of the branch line 3 is connected to the conductor 7 of the main line 1 by this connecting device, first, the main line 1 is connected.
The conductor 7 of the main wire 1 and the conductor 5 of the branch wire 3 are crossed and arranged between the pair of electrodes 21 and 23, and the conductor 7 of the main wire 1 is housed in the groove 27 provided in one electrode 23, and Electrode 21
It is accommodated in the groove 25 provided in Then, the intersection of the conductor 7 of the main line 1 and the conductor 5 of the branch line 3 is pressed and heated while being sandwiched by the pair of electrodes 21 and 23, so that the conductor 7 of the main line 1 and the conductor 5 of the branch line 3 cross each other. Weld and connect the parts.

The conductor 7 of the main line 1 connected in this way
As shown in FIGS. 2 and 3, the connecting portion between the branch wire 3 and the conductor 5 is formed into a mountain shape in the portion accommodated in the grooves 25 and 27. At the same time, the section modulus can be increased and the mechanical strength of the welded portion (intersection portion) 29 is improved.

That is, when the conductor sandwiching surfaces 21a and 23a of the pair of electrodes 21 and 23 are flat, the welded portion is formed in a thin flat plate shape because of its high compressibility, and the section modulus becomes small. Therefore, while the mechanical strength is reduced, according to the connection method of the present embodiment, the portions accommodated in the grooves 25 and 27 are formed in a mountain shape as described above, so that the welded portion The section modulus can be increased and the mechanical strength can be improved.

Further, since the main line and the branch line can be welded in a state of intersecting each other, the main line and the branch line are arranged parallel to each other as in the conventional case, and after welding, in a direction intersecting with the main line. It is not necessary to bend the branch line, and welding in a narrow space is possible.

Next, the branch wire 3 is added to the conductor 7 of the flat cable 31 shown in FIG.
An example of connecting the two will be described.

As shown in FIG. 4, the flat cable 31
Is formed by sandwiching four conductors 7, 7, 7, 7 arranged in parallel at a predetermined interval between sheet-shaped insulators 33, 35. Such flat cable 3
In order to connect the branch wire 3 to the conductors 7, 7, 7, 7 of 1, the insulators 33, 35 are partially peeled off to form the conductor exposed portion 37,
The conductor 5 of the branch wire 3 is overlapped on the conductor 7 exposed from the conductor exposed portion 37 in an intersecting state. Then, the intersection of the conductor 7 of the flat cable 31 and the conductor 5 of the branch line 3 is arranged between the pair of electrodes 21 and 23 of the above-described connecting device, and the conductor 7 of the flat cable 31 and the conductor 5 of the branch line 3 are arranged. Are housed in grooves 25 and 27 having a V-shaped cross section, and in this state, they are sandwiched by a pair of electrodes and pressed and heated to weld the intersecting portions.

According to this embodiment, the flat cable 31
On the other hand, when the branch lines are connected in a crossed state, it is possible to make a strong connection in a small space.

[0022]

As described above, according to the first aspect of the invention, a pair of electrodes having a groove having a V-shaped cross section is provided.
Since the conductor of the main line and the conductor of the branch line are welded in a state of intersecting each other, it is possible to firmly connect in a small space.

According to the second aspect of the invention, the intersecting portion of the conductor of the main line and the conductor of the branch line is heated while being sandwiched between a pair of electrodes having a groove having a V-shaped cross section, and the conductor of the main line and the branch line. Since it is connected to the conductor of, it can be connected firmly in a small space.

[Brief description of drawings]

FIG. 1 is a perspective view showing a wire connecting device according to the present invention, and a main wire and a branch wire connected by the connecting device.

FIG. 2 is a perspective view showing a welded portion of an electric wire of a main wire and an electric wire of a branch wire which are connected by an electric wire connecting device according to the present invention.

FIG. 3 is a cross-sectional view showing a welded portion of an electric wire of a main wire and an electric wire of a branch wire connected by an electric wire connecting device according to the present invention.

FIG. 4 is a perspective view showing a flat cable that is connected by the electric wire connecting device according to the present invention in a state where branch conductors intersect each other.

FIG. 5 is a plan view showing a conventional electric wire connection configuration, in which (a) shows a case in which a branch line is arranged in a direction intersecting with a main line, and (b) shows the branch line parallel to the main line. It is a front view showing the case where wiring is carried out.

FIG. 6 is an explanatory view showing a conventional electric wire connecting device and connecting method.

FIG. 7 is an explanatory diagram showing another conventional electric wire connecting device and connecting method.

FIG. 8 is a perspective view showing a conventional wire connection device and connection method for connecting a main wire conductor and a branch wire conductor in a crossing state.

9 is a perspective view showing a connecting portion between a main wire conductor and a branch wire conductor connected by the conventional electric wire connecting device shown in FIG. 8;

FIG. 10 is a cross-sectional view showing a connecting portion between a main wire conductor and a branch wire conductor connected by the conventional electric wire connecting device shown in FIG. 8;

[Explanation of symbols]

 1 main wire 3 branch wires 5 and 7 conductors 21 and 23 electrodes 25 and 27 groove with V-shaped cross section 29 welded portion

Claims (2)

[Claims] 1. A wire connecting device for connecting a main wire and a branch wire to a main wire and a branch wire by pressing and heating while sandwiching the conductor between the main wire and the branch wire. A groove having a V-shaped cross section for accommodating the conductor of the main line and the conductor of the branch line is provided on the surface so as to intersect each other when the conductor of the main line and the conductor of the branch line are sandwiched. A connecting device for an electric wire, characterized in that the main wire conductor and the branch wire conductor are connected in an intersecting state. 2. The conductor of the main line and the conductor of the branch line are crossed and arranged between a pair of electrodes, and the conductor of the main line is accommodated in a groove having a V-shaped cross section provided in one of the electrodes. It is housed in a groove having a V-shaped cross-section provided in the other electrode, and the crossing portion of the main line conductor and the branch line conductor is sandwiched between a pair of electrodes to apply pressure.
A method of connecting an electric wire, comprising heating and connecting a conductor of a main line and a conductor of a branch line.