JP3079288B2 - Wire connection method for closed terminals - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a single-core covered electric wire having a single core wire and a multi-core covered electric wire having a large number of thin conductive wires in a closed terminal. Related to the connection method.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, a single-core covered electric wire 1 in which a core wire 1a is a single single conductor and a multi-core covered electric wire 2 in which a core wire 2a is an aggregate of a large number of thin conductors. When the connection is made within the closed terminal 6, the jacket 1 on one end side of the both insulated wires 1 and 2 is used.
The core wires 1a and 2a are exposed by exfoliating b and 2b, inserted into the conductive metal sleeve 5 of the closed terminal 6, and connected by crimping the sleeve portion from outside the closed terminal with a crimping tool 7. .

However, according to the above-described means, the collective core wire 2a, which is a gathering of thin conductive wires, and the single core wire 1a formed of a single wire have a plastic deformation rate, strain, and deformation when subjected to hardness or external force. Are not deformed uniformly when they are pressed together with the sleeve in the sleeve 5 of the closed terminal 6 and receive a compressive load.
Each thin wire a was diffused into the gap in the sleeve 5, and there was a phenomenon that a sufficient pressure-gripping force could not be obtained and the wire could easily come off from the sleeve 5.

[0004]

The problem to be solved is that, as described above, the collective core wire 2 is disposed within the sleeve of the closed terminal.
a, when the single core wire 1a is crimped, the collective core wire 2a is more easily removed from the sleeve 5 than the single core wire 1a.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electric wire connection method which solves the above-mentioned problem by simply adding a simple pipe while using a conventional type closed terminal.

[0006]

In order to achieve the above object, the present invention takes the following technical measures. That is, in the electric wire connection method according to the present invention, one core wire 1a is provided in a closed terminal 6 in which a sleeve 5 formed of a conductive metal is fitted in a synthetic resin tubular case 4 having one end opened. When connecting a single-core covered electric wire 1 as a single conductor and a multi-core covered electric wire 2 in which a core wire 2a is an aggregate of a large number of thin conductors, firstly, outer sheaths 1b, 2b is peeled to expose each of the core wires 1a and 2a, and a core wire 2a of one of the multi-core covered electric wires is covered with a pipe 3 made of a conductive metal. Are inserted in parallel into the sleeve 5 of the closed terminal 6, and the sleeve portion is crimped from outside the closed terminal with a crimping tool.

Further, the pipe 3 is made of a material such as copper which is easily plastically deformed by an external pressure, and has an inner diameter capable of covering the inserted core 2a without any gap .
And requirements .

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has realized a wire connection method which solves the above-mentioned problem by simply adding a simple pipe while using a conventional type closed terminal.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of a method for connecting electric wires according to the present invention, wherein reference numeral 1 denotes a single-wire covered electric wire in which one single conductive wire 1a is covered with an insulating jacket 1b. Reference numeral 2 denotes a multi-core covered electric wire in which a core wire 2a formed of an aggregate of a large number of thin conductive wires is covered with an insulating jacket 2b.
Reference numeral 6 denotes a conventionally known closed terminal, which is formed by fitting a sleeve 5 made of a conductive metal such as copper into a cylindrical case 4 made of synthetic resin having one end opened and the other end closed. I have. Reference numeral 3 denotes a pipe used in the method of the present invention, which is made of a material having excellent electrical conductivity and easily deformable by plastic, such as copper.
It is formed with an inner diameter that allows the collective core wire 2a from which is peeled off to be inserted without a gap.

In the present invention, when connecting the single-core covered electric wire 1 and the double-core covered electric wire 2, first, the two covered electric wires 1 and 2 are connected.
Of the core wires 1a, 2a by peeling the jackets 1b, 2b on one end side of the
Is exposed, and a pipe 3 is
Put on. The collective core wire 2a covered with the pipe 3 and the single core wire 1a of the single core covered electric wire are inserted in parallel into the sleeve 5 of the closed terminal 6, and this sleeve portion is crimped from outside the closed terminal with a crimping tool.

When crimped as described above, the collective core wire 2a has no room to diffuse outward by the pipe 3 coated on its outer periphery, and together with the pipe 3, the sleeve 5 has the same shape as the other single core wire 1a. It deforms along with the deformation, and both core wires can be firmly connected with the same holding force. Moreover, in the method of the present invention, it is only necessary to insert an extremely inexpensive pipe 3 into the collective core wire 2a in advance as compared with the conventional means.
Workability and cost are almost the same as those of the conventional means.

The sleeve 5 of the closed terminal 4 is preferably formed in an elliptical shape slightly compressed in the vertical direction as shown in the figure. By doing so, when the collective core wire 2a covered with the pipe 3 and the single core wire 1a of the single core coated electric wire are inserted in parallel into the sleeve 5 of the closed terminal 6, the gap between the sleeve 5 and each core wire 1a, 2a Can be minimized, and the holding force during crimping can be increased.

Although the representative embodiment of the present invention has been described above, the present invention is not necessarily limited to the structure of the above-described embodiment. Of course, it can be implemented.

[0014]

Since the connection method of the present invention is constructed as described above, when crimping is performed in the sleeve of the closed terminal, the collective core wire has a margin to be diffused outward by the pipe covered on the outer periphery thereof. And the pipe is crimped and deformed together with the pipe in the same manner as a single-core wire, so that both types of double-core wires can be firmly connected with the same holding force, and in addition, the pipe of the present invention is extremely inexpensive as compared with the conventional means. However, there is an excellent effect that workability and cost are almost the same as the conventional means.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a wire connection method according to the present invention.

FIG. 2 is a cross-sectional view showing a connection process by the above-described electric wire connection method, showing a state before crimping.

FIG. 3 is a perspective view showing a conventional electric wire connection means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Single-core covered electric wire 1a Core wire 2 Double-core covered electric wire 2a Core wire 3 Pipe 5 Closed terminal sleeve 6 Closed terminal

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-56-145682 (JP, A) JP-A-2-189879 (JP, A) Fully open 60-162369 (JP, U) Really open 1687 (JP, U) JP-A 48-45182 (JP, U) JP-B 39-28281 (JP, B1) JP-B 45-30140 (JP, B1) JP-B 39-4931 (JP, Y1) (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 43/04-43/048 H01R 4/22

Claims (1)

(57) [Claims] 1. A synthetic resin tubular case having an open end.
(4) In a closed terminal (6) in which a sleeve (5) formed of conductive metal is fitted, a single-core covered electric wire (1) in which the core wire (1a) is one single conductor, and a core wire ( When connecting 2a) to a multi-core insulated wire (2), which is an aggregate of a number of thin conductors, first, cover the outer jackets (1b) and (2b) on one end of both insulated wires (1) and (2). Peel to expose each core wire (1a), (2a)
(2a) is covered with a conductive metal pipe (3), and the core wire (2a) covered with the pipe (3) and the core wire (1a) of the single-core covered electric wire are arranged in parallel to form a sleeve (6) of a closed terminal (6). 5) and crimping this sleeve part from outside of the closed terminal with a crimping tool to connect , and the pipe (3) has excellent conductivity such as copper.
And formed of a material which is easily plastically deformed, and
Remove the outer core (2b) of the insulated wire (2) from the
A method for connecting electric wires in a closed terminal, characterized in that the wire is formed with an inside diameter that allows easy insertion.