JPH0492377A - Wire connection - 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] [Field of Industrial Application] The present invention provides a thin, waterproof and highly productive wire in which the outer periphery of the conductor connection portion of a covered electric wire and the surrounding sheathing is integrally molded with a thermosetting resin. Concerning electrical wire connections with excellent quality.

[Conventional technology]

As this type of waterproof connection method between electric wires, the waterproof connection method shown in FIGS. 6 to 8 is conventionally known. First, the conductors from which the sheathing of the covered wire a has been removed are stacked on top of each other,
Crimp this part with caulking terminal C to make the connection (Figure 6). Next, this connecting portion is sandwiched between vinyl chloride sheets (hereinafter abbreviated as vinyl chloride sheets) d, and the periphery of the vinyl chloride sheets d is welded using ultrasonic waves (FIGS. 7 and 8).

[Problem to be solved by the invention]

The conventional waterproof connection method for mutually covered electric wires has the following problems.

(1) The caulked portion also rises and becomes thick, making it difficult to flatten it.

(2) If external force is applied to the connection part, the sealing terminal will break the PVC sheet and the waterproofness will be impaired.

(3) Two processes are required: caulking and ultrasonic waves, and the parts used include a caulking terminal and a PVC sheet.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a connection section for electric wires that uses few parts and has a simple structure with good productivity, is thin, and has good waterproof properties.

[Means to solve the problem]

In order to achieve the above-mentioned problems, the present invention adopts a configuration in which a conductor made of thermosetting resin is provided around the conductors of a plurality of electric wires stacked on top of each other, and the protector maintains a state of contact between the conductors. did.

〔Example〕

Embodiments of the electric wire connection portion of the present invention will be specifically described with reference to FIGS. 1 to 3.

In FIG. 1, 1 is a flat electric wire, 2 is a conductor of the flat electric wire from which the sheathing has been removed, and two of them are stacked one on top of the other to form a conductor connection portion 2'. 3 is a thermosetting resin protector integrally molded by a method described later. The protector 3 maintains the electrical connection of the conductor connection part 2' with resin pressure during integral molding,
The surface is flat and has a thin structure.

Next, a method for manufacturing the connecting portion of this electric wire will be explained based on FIG. 3. As a material for the protector 3, a glass cloth-based epoxy resin called prepreg is used. This is a glass cloth base material impregnated with a semi-cured epoxy resin as a binder, and is used for the glabella adhesive and insulating layer of multilayer printed distribution boards.

(1) Uncured thermosetting resin sheet 3 such as prepreg
The conductor 2 from which the tip end of the flat wire 1 has been uncoated is placed on top of the conductor 2a, and the thermosetting resin sheet 3a is placed on top of the conductor 2.
Place.

(2) Set the above items into the hot press mold 4.

(3) The heat press mold 4 is heated and pressurized by a heat press under predetermined heat press conditions (temperature and pressure for 2 hours), and the thermosetting resin sheet 3a is melted and hardened to form a protective body 3. Complete the wire connection. An example of the above hot press conditions is a temperature of 180°C, a pressure of 30 kg,
It takes about 10 minutes.

FIG. 4 shows another embodiment, in which a hole 5 is made in the conductor 2 from which the coating at the tip of the flat electric wire 1 has been removed (FIG. 4(a)),
The thermosetting resin enters this hole 5, and a stronger connection is obtained (FIG. 4(b)). In the embodiment shown in FIG. 5, a cut surface 6a is provided at the tip of the covered electric wire 6, and this cut surface 6a
The wires are stacked one on top of the other and integrally molded with thermosetting resin in the same manner as in the above embodiments, and this shows an example in which the wire connection part of the present invention can be applied to coated wires having shapes other than the flat wires described above. .

〔Effect of the invention〕

As described above, the present invention provides a thermosetting resin protector around the overlapping conductors of a plurality of electric wires, and the protector maintains the contact state between the conductors, which is different from the conventional example. Since the caulking terminal can be omitted, the component cost and caulking work cost of the caulking terminal are unnecessary, and the surface becomes a flat surface and a thin structure for connecting the electric wire can be obtained.

In addition, since the electrical wire connections are melted and hardened with thermosetting resin using a heat press and integrally molded, they are highly waterproof, and the connection area can be electrically connected, protected, fixed, and waterproofed at the same time, increasing productivity. is high.

[Brief explanation of drawings]

Figure 1 is a perspective view of one embodiment of the present invention, Figure 2 is a sectional view of the same as the above, Figure 3 is an explanatory diagram of the same as the above during manufacturing, and Figures 4 (a) and (b) are of another embodiment. A perspective view (a) and a sectional view ('b), FIG. 5 is a perspective view of another embodiment, FIGS. 6 and 7 are perspective views of the conventional example, and FIG. 8 is a sectional view of the same as above. . 2... Conductor, 3... Thermosetting resin protector.

Claims (1)

[Claims] A connecting portion for electric wires, characterized in that a thermosetting resin protector is provided around a plurality of overlapping conductors of the electric wires, and the protector maintains a state of contact between the conductors.