JPH0850940A - Terminal connection structure for flat cable - Google Patents

Abstract

PURPOSE:To make the electrical resistance of a flat cable low, and form the connection of each conductor to terminals into a comparatively simple structure by positively making use of vacant conductors which have not been used so far. CONSTITUTION:The conductor exposed end of an insulating shield 1g for a flat cable 1 is formed into two steps composed of a first conductor exposed end 1h, and a second conductor exposed end 1i projected outward from the first conductor exposed end, the specified number of conductors 1a, 1b and 1c are exposed at their end sections out of the first conductor exposed end 1h, and respective terminals 2a, 2b and 2c are connected to the aforesaid end sections. Meanwhile, the projected end section of the flat cable including the second conductor exposed section 1i is folded to the respective terminal side, the specified number of conductors 1f, 1e and 1d are exposed at their end sections, and the aforesaid end sections are connected to the terminals 2a, 2b and 2c. Paired conductors la and 1f, 1b and 1e and 1c and 1d are connected in parallel with the terminals 2a, 2b and 2c respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure in which a predetermined number of conductors are exposed from the end of an insulating coating of a flat cable and each terminal is connected to each end.

[0002]

2. Description of the Related Art As is well known, flat cables are widely used in various fields, and many types of flat cables having different numbers of conductors in an insulating coating are commercially available. The user obtains this commercially available flat cable and, in general, connects the terminal to all or required conductor ends,
Wire to the device.

When the flat cable is a general-purpose commercial product, only a part of the conductor included in the flat cable is often used. For example, in FIG. 1, when the total number of conducting wires is 6 (1a to 1f), for example, only 3 of them (for example, only 1a, 1b, 1c) are used and the other 3 are used.
Books (1d, 1e, 1f) are often vacant.
However, normally, the terminals 2a to 2f are connected to all the conductors 1a to 1f. In the figure, 3 indicates an insert mold portion for fixing the conductor and the terminal. Therefore, it has been a very uneconomical usage method in the past. In the past, there was no idea to positively utilize the three idle conductors that were idle.

The present inventors have focused on reducing the electric resistance of the flat cable by positively utilizing the conductor wire which has not been used conventionally.

[0005]

SUMMARY OF THE INVENTION Therefore, the technical problem to be solved by the present invention is to positively utilize an empty conductor wire which has not been conventionally used and to reduce the electric resistance of the flat cable. . Another object of the present invention is to achieve the above object with a structure in which the conductor wire and the terminal are connected relatively easily.

[0006]

In order to solve the above problems, in order to solve the above problems, the present invention provides two solutions.

According to one of the means for solving the problem, the structure of the flat cable insulating coating is such that the exposed end of the conductive wire is exposed to the first exposed end of the conductive wire and the second exposed end of the wire protruding outward from the exposed end of the first electric wire. A flat cable including a second conductor exposed end, which has a two-stage configuration with an exposed end, exposes ends of a predetermined number of conductors from the first conductor exposed end, and connects each terminal to each end thereof. The projecting end portions of the above are bent toward the terminals, the end portions of a predetermined number of conducting wires are exposed, and the respective end portions are selectively connected to the terminals.

According to the above configuration, one terminal has two terminals.
The above conductors are connected in parallel. As a result, the empty conductor wire, which has not been conventionally used, is effectively used, and the electric resistance of the conductor wire in the flat cable is also reduced.

According to the above construction, it is only necessary to prepare the required number of terminals, and the extra terminals 2d, 2e, 2f as shown in FIG. 1 do not occur.

Further, according to the above structure, there is an advantage that it is not necessary to use another connecting wire by using the technique of bending the projecting end portion of the flat cable including the second conductor exposed end.

Further, in the structure according to the second solving means, a predetermined connecting portion of the terminal material, which is integrally formed by sheet metal punching of the terminal through the connecting portion connecting the adjacent terminals, is selectively removed. It is characterized by doing.

In this case, each terminal is connected to the corresponding conductor in the form of a terminal material. This connection work is easy because the terminal material is a single piece. Further, after the connecting work, it is easy to remove a predetermined connecting portion. A lead wire or the like is connected to one end of two or more terminals connected at the connecting portion. Therefore, in that two or more conductors are connected in parallel to one terminal,
This is similar to the first solution.

[0013]

Embodiments of the present invention will be described in detail below with reference to FIGS.

2 and 3, members or parts corresponding to those of FIG. 1 are designated by the same reference numerals.
First, a first embodiment will be described with reference to FIG.

In FIG. 2, the conductor wire exposed end of the insulating coating 1g of the flat cable 1 is a first conductor wire exposed end 1h and a second conductor wire exposed end 1i protruding outwardly from the first wire exposed end 1i. And a two-stage configuration. That is, the portion including the second conductor exposed end 1i constitutes the protruding end 1k. In the first embodiment, the required number of terminals is three.

Next, each end of a predetermined number of conductors 1a, 1b, 1c is exposed from the insulating coating 1g from the first conductor exposed end 1h, and each terminal 2a, 2b, 2c is exposed at each end.
Connect. The connecting portion is indicated by diagonal lines in the figure.

On the other hand, the second conductor exposed end 1i is formed in a step-like shape as shown by the alternate long and short dash line in FIG.
d, 1e, 1f are exposed from the insulating coating 1g. That is, the conductors 1f, 1e, and 1d are gradually shortened in this order. Next, the projecting end 1k of the flat cable is bent approximately 90 ° toward each of the terminals (the bent state is shown by the actual battle in the figure), and a predetermined number of conductors 1f, 1
e and 1d are respectively connected to the terminals 2a,
Connect to 2b and 2c. At this time, the end of each conducting wire is connected to one corresponding terminal and is insulated from the other terminals by the insulating coating 1g.

In the above structure, each pair of conducting wires 1a,
1f; 1b, 1e; 1c and 1d are connected in parallel to the respective terminals 2a, 2b and 2c. Thereby, the conductors 1d, 1e, 1f are also effectively used, and the electric resistance of the conductors in the flat cable is also reduced.

In the above embodiment, the conductors 1d, 1e, 1f are used.
Are respectively connected to the terminals 2a, 2b, 2c on a one-to-one basis, and the connection is selected according to the purpose. Also, although not preferable, the conductive wires 1d, 1e,
It is also possible to play without using a part of 1f.

Next, a second embodiment will be described with reference to FIG. In this embodiment, the entire terminal is formed by selectively removing predetermined connecting portions 4b and 4d of a terminal material integrally formed by sheet metal punching through connecting portions 4a to 4e connecting adjacent terminals. . In other words, the connecting portions 4a, 4c, 4e are left, and the pair of terminals 2a, 2b; 2c, 2d; 2e, 2f are respectively integrated.

In this case, each terminal is connected to the corresponding conductor in the form of a terminal material. This connection work is easy because the terminal material is one piece. Also,
After the connecting work, it is easy to remove the predetermined connecting portion. The lead wire or the like is connected to one of the pair of terminals connected at the connecting portion, for example, to the tip end portions of 2a, 2c, 2e. That is, the other terminals 2b, 2d, 2
The tip of f is unused. Therefore, in this case, for each terminal 2a, 2c, 2e, each pair of conductors 1a,
1b; 1c, 1d; 1e, 1f are connected in parallel.

[Brief description of drawings]

FIG. 1 is a plan view of relevant parts showing a terminal connection structure of a flat cable according to a conventional example.

FIG. 2 is a main part plan view showing a terminal connection structure of a flat cable according to a first embodiment of the present invention.

FIG. 3 is a plan view of relevant parts showing a terminal connection structure of a flat cable according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flat table 1a-1f Conducting wire 1g Insulation coating 1h First conducting wire exposed end 1i Second stepped conducting wire exposed end 1j Folding curve 1k Projecting end 2a-2f Terminal 3 Insert mold part 4a-4d Connecting part

Claims (2)

[Claims] 1. An insulating coating (1) for a flat cable (1)
In a structure in which the ends of a predetermined number of conductors (1a to 1f) are exposed from the end of g) and each terminal is connected to each end, the exposed end of the insulation coating (1g) of the flat cable (1) In a two-stage structure including a first conductor exposed end (1h) and a second conductor exposed end (1i) protruding outward from the first wire exposed end, and the first conductor exposed end ( 1h) exposes ends of a predetermined number of conductors (1a, 1b, 1c) and connects each terminal (2a, 2b, 2c) to each end, while the second conductor exposed end (1i) The projecting end (1k) of the flat cable including the above is bent toward the terminals, and the ends of a predetermined number of conductors (1d, 1e, 1f) are exposed, and each end is connected to the terminal (2a, Two
Terminal connection structure of flat cable characterized by being selectively connected to b, 2c). 2. An insulating coating (1) for a flat cable (1)
In a structure in which the ends of a predetermined number of conducting wires (1a to 1f) are exposed from the end of g) and each terminal is connected to each end, the terminals (2a to 2f) connect adjacent terminals. Flat cable terminal connection, characterized in that predetermined connecting portions (4b, 4d) of the terminal material integrally formed by sheet metal punching through the connecting portions (4a to 4d) are selectively removed. Construction.