JPH0676869A - Terminal section for flat cable - Google Patents

Abstract

PURPOSE:To improve the workability and reliability at the time of the terminal process of the terminal section of a flat cable. CONSTITUTION:Each of multiple conductors 11 of a flat cable is pinched by the first insulating film 12 having a circular hole 12a and the second insulating film 13 having an exposure section 13a. For the terminal process, a connecting terminal is connected to the conductor 11 from the exposure section 13a side, one welding electrode is brought into contact with the connecting terminal, the other welding electrode is inserted into the circular hole 12a, and the conductor 11 and the connecting terminal are welded together.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal portion of a flat cable used for wiring various electric devices.

[0002]

2. Description of the Related Art Conventionally, in this type of flat cable, insulating films 2a and 2b are laminated on both surfaces of a conductor 1 made of a metal foil, as shown in a sectional view of FIG.

At the end of such a flat cable,
For example, when performing so-called terminal processing for connecting the connection terminals,
Open the insulating films 2a and 2b at the ends on both sides to make the conductor 1
Is exposed, and the connection terminal T is joined to one side or both sides,
The conductor 1 is welded while the insulating films 2a and 2b are open.

[0004]

However, in the above-mentioned conventional example, the insulating films 2a and 2b are opened on both sides to expose the conductor 1 at the time of the terminal treatment, and the connection terminal T is overlapped and welded on the conductor 1 for insulation. The work of closing the films 2a and 2b again has to be performed, and there is a problem that automation is difficult.

The object of the present invention is to solve the above problems,
An object of the present invention is to provide a terminal portion of a flat cable capable of performing terminal treatment without opening or closing the insulating film.

[0006]

A terminal portion of a flat cable according to the present invention for achieving the above object is a terminal portion of a flat cable in which a plurality of conductors made of metal foil are sandwiched by insulating films. The insulating film on one side is provided with a plurality of holes for individually exposing the conductors, and the insulating film on the other surface is provided with an exposed portion for commonly exposing the conductors. Is.

[0007]

In the terminal portion of the flat cable having the above-mentioned structure, holes are formed in the insulating film on one surface to individually expose each conductor in the terminal portion, and each conductor is exposed on the insulating film on the other surface. In that case, the connection terminals are joined from the exposed portion and welded through the holes.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 is a plan view of this embodiment, and FIG. 2 is a sectional view thereof. A first insulating film 12 is attached to one surface of a plurality of conductors 11 made of metal foil, and a circular hole 12a for welding corresponding to each conductor 11 is formed on one surface of a terminal portion A thereof. . Further, the second insulating film 13 is attached to the other surface of the conductor 11, and the exposed portion 13a for joining the connection terminals that exposes all the conductors 11 is exposed at the terminal portion A thereof.
Is provided.

FIG. 3 is a process drawing for manufacturing the terminal portion of the flat cable of this embodiment. As shown in FIG. 3 (a), first, the first insulating film 12 having adhesiveness and fed out from the roller 14 is first formed. A plurality of circular holes 12a are punched at a predetermined position with a press 15. Next, the conductor foil 17 made of copper or the like fed from the roller 16 is placed on the first insulating film 12 having the circular holes 12a punched out.
Then, a half cut press 19 is used to perform half blanking on a conductor foil into a circuit structure composed of a plurality of conductors 11, and the remaining portion 17a is wound by a roller 20 and removed. In the half blanking of the conductor foil 17, it is necessary that the circular holes 12a and the conductor 11 have a correct position. Conductor 1 formed in this way
The first insulating film 12 having No. 1 is wound by the roller 21.

On the other hand, as shown in FIG. 3 (b), the second insulating film 13 having an adhesive property and fed from the roller 22.
A square exposed portion 13a for exposing the plurality of conductors 11 in common is punched out by a press 23 at a predetermined position. Next, the second insulating film 13 with the exposed portion 13a punched out is laminated on the conductor 11 laminated on the first insulating film 12 fed from the roller 21. At this time, the conductors 11 are laminated by the laminator 24 so that the positions of the exposed portions 13a correspond to the positions of the circular holes 12a. Finally, the press 25 punches out the outer shape according to the circuit structure, and the terminal portion A of the flat cable as shown in FIGS. 1 and 2 is obtained.

When terminal treatment is applied to the terminal portion of such a flat cable, the connecting terminal T is superposed on the conductor 11 exposed from the exposed portion 13a as shown in FIG. The welding electrode 25a is brought into contact with the connection terminal T, and the other welding electrode 25b is brought into contact with the conductor 11 via the circular hole 12a. In this state, the electrodes 25a,
When a voltage is applied to 25b, electric discharge is generated between the electrodes 25a and 25b, and the connection terminal T is welded to the conductor 11.

[0012]

As described above, in the terminal portion of the flat cable according to the present invention, the holes for exposing the conductors are provided in the insulating film on one surface, and the exposed portions of the conductors are provided in the insulating film on the other surface. Since the connection terminals can be joined without opening the insulating film during terminal processing and welding can be performed through the holes, workability and reliability are improved.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment.

FIG. 2 is a sectional view.

FIG. 3 is a process drawing of manufacturing a terminal portion of a flat cable.

FIG. 4 is a sectional view of terminal processing.

FIG. 5 is a cross-sectional view of a conventional example.

[Description of Reference Signs] 11 conductor 12 first insulating film 12a circular hole 13 second insulating film 13a exposed portion 17 conductor foil 25a, 25b welding electrode

Claims (1)

[Claims] 1. In a terminal portion of a flat cable in which both surfaces of a plurality of conductors made of metal foil are sandwiched by insulating films, a plurality of holes for individually exposing the conductors are provided in the insulating film on one surface, A terminal portion of a flat cable, wherein the insulating film on the other surface is provided with an exposed portion that commonly exposes the conductors.