JPH09116262A - Method and member for connecting circuit conductor of flat conductor wiring board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a member for connecting circuit conductor of flat conductor wiring board which can connect the circuit conductors of the same flat conductor wiring board to each other and, at the same time, can fit the wiring board to the corresponding member of a car body, electric equipment, etc. SOLUTION: Connecting members 23 and 25 composed of metallic plates 26 and 27 on the surfaces of which metallic pins 26a and 26b and 27a and 27b are respectively erected are used and the front ends of the pins 26a, 26b, 27a, and 27b are welded to circuit conductors 23a and 23c after the pins 26a, 26b, 27a, and 27b are passed through the conductors 23a and 23c. In addition, after a resin grip 34 is out in a metallic plate 31 by inserting inserting members 35a and 35b into an inserted member 33 and a projection 35c into a recessed section 31, an FPC 21 is fitted to a panel by locking a checking locking body 36 to the panel of a car body, electric equipment, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit conductor connecting method and connecting member for a flat conductor wiring board such as an FPC (flexible printed circuit) mounted on a vehicle body, electric equipment, etc. The present invention relates to a connection method and a connection member for connecting a plurality of circuit conductors which are covered with a film and are provided in the extending direction of an insulating film.

[0002]

2. Description of the Related Art Recently, a so-called flexible print in which a circuit conductor such as a thin copper plate is coated on a thin insulating film
A flat conductor wiring board consisting of a circuit (hereinafter, simply referred to as an FPC) is often used. Since the FPC is very thin in shape, it is necessary to arrange it in a very narrow space in the width direction. It is very suitable and is usually attached to a vehicle body panel or the like while being fixed to a protector.

As a conventional FPC of this type, for example,
The one shown in FIG. 4 is known. In FIG.
Reference numerals 1 and 2 denote FPCs. The FPCs 1 and 2 are printed with a plurality of circuit conductors 3 and 4 made of a thin copper plate or the like forming a conductor pattern on the insulating films 1a and 2a, and the insulating films 1b and 2b is coated.

By the way, when connecting the circuit conductors 3 and 4 of the FPCs 1 and 2, the FPCs 1 and 2 are superposed so that the desired regions of the circuit conductors 3 and 4 overlap each other, and then the metal pin 5 is attached. It is known that the connection work of the circuit conductors 3 and 4 can be easily performed by ultrasonically welding the desired region of the metal pin 5 and the circuit conductors 3 and 4 after penetrating the desired region (for example, JP-A-5-11024
No. 6 publication).

[0005]

However, in such FPCs 1 and 2, the circuit conductors 3 and 4 of the FPCs 1 and 2 facing each other can be connected, but in the same FPCs 1 and 2, Circuit conductors 3 or 4 or circuit conductors 4
There was no way to connect them together. For example, as shown in FIG. 5, the plurality of circuit conductors 8a to 8d are insulating films 9a,
9b covered with connectors 10 on each end
In the FPC 9 to which ~ 12 are attached, the circuit conductor 8a
And circuit conductor 8d are connected to connect circuit conductor 8d and connector 1
It was not possible to electrically connect the 0 and 11 sides.

Therefore, it is an object of the present invention to provide a method for connecting circuit conductors of a flat conductor wiring board, which can connect circuit conductors of the same flat conductor wiring board. According to the invention of claim 2, circuit conductors of the same flat conductor wiring board can be connected to each other, and
An object of the present invention is to provide a connecting member for a circuit conductor of a flat conductor wiring board, which enables the flat conductor wiring board to be attached to a counterpart member such as a vehicle body or an electric device.

[0007]

According to the first aspect of the present invention,
In order to solve the above-mentioned problems, a method of connecting a plurality of circuit conductors covered with an insulating film and provided along the extending direction of the insulating film, wherein a plurality of metal pins are erected on the surface. It is characterized in that a connecting member made of a metal plate is prepared, the metal pin is penetrated through a plurality of circuit conductors, and the tip of the metal pin is welded to the insulating film.

In this case, the circuit conductors of the same flat conductor wiring board can be electrically connected to each other through the metal pin and the metal plate, and the usability of the flat conductor wiring board can be improved. In order to solve the above-mentioned problems, the invention according to claim 2 is a connecting member which is covered with an insulating film and which connects a plurality of circuit conductors provided in the extending direction of the insulating film, and which is provided on the surface. A metal plate on which a plurality of metal pins are erected, a first fitting portion provided on the back surface of the metal plate, and a second fitting portion that can be inserted into and removed from the first fitting portion And a resin clip having a locking member that can be locked to the member.

In this case, the metal pins can be penetrated through a plurality of circuit conductors to electrically connect the circuit conductors of the same flat conductor wiring board through the metal pins and the metal plate.
The usability of the flat conductor wiring board can be improved. In addition to this, fit a resin clip on the back side of the metal plate,
The flat conductor wiring board can be attached to the panel by locking the resin clip to the panel of the mating member such as the vehicle body or the electric device, so that a multifunctional connecting member can be obtained.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are diagrams showing a method for connecting circuit conductors of a flat conductor wiring board according to the present invention and a first embodiment of a connecting member for achieving the connecting method. First, the configuration will be described. In FIG. 1, reference numeral 21 denotes an FPC as a flat conductor wiring board. This FPC 21 has a plurality of circuit conductors 23a to 23d made of a thin copper plate or the like on which a conductor pattern is formed on an insulating film 22a and an upper surface thereof. Is covered with an insulating film 22b.

Further, 24 and 25 are connecting members, and the connecting members 24 and 25 have two metal pins 26a, 26b, 27a and 27 on the surface.
It is composed of metal plates 26 and 27 in which b is erected. The distance between the metal pins 26a and 26b of the metal plate 26 corresponds to the distance between the adjacent circuit conductors, for example, circuit conductors 23a and 23c, and the distance between the metal pins 27a and 27b of the metal plate 27 is, for example, Circuit conductors 23 facing each other with the circuit conductors 23b and 23c interposed therebetween.
It corresponds to the separation distance of a and 23d.

Next, the operation will be described. For example, circuit conductor
When connecting 23a and 23c to each other, the metal pins 26a and 26b are penetrated through the circuit conductors 23a and 23c and the tips of the metal pins 26a and 26b are ultrasonically welded as shown in FIG. As shown in FIG. 2B, the metal pins 26a and 26b are welded to the insulating film 22b. As a result, the metal pin 26
The circuit conductors 23a and 23c of the same FPC 21 can be electrically connected to each other through a, 26b and the metal plate 26.
The usability of PC21 can be improved. The welding of the tip portions of the metal pins 26a and 26b may be soldering. Further, two metal pins 27a and the like are provided upright on each metal plate 26, 27, but three or more may be provided.

FIG. 3 is a diagram showing a second embodiment of a method for connecting circuit conductors of a flat conductor wiring board according to the present invention and a connecting member for achieving the method. In FIG. 3, 31
Is a metal plate, and the surface of this metal plate has two metal pins 32.
a and 32b are erected. Further, a rectangular fitting member (first fitting portion) 33 is provided on the back surface of the metal plate 31, and a recess 33a is formed at a substantially central portion of the fitting member 33. A resin clip 34 can be inserted into and removed from the fitting member 33, that is, can be attached and detached. The resin clip 34 includes a flat plate member 35 and a flat plate member 35.
Fitting members (second fitting portions) 35a, 35b that are bent in an L shape downward from both ends of the fitting member, and that can fit into and disengage from the fitting member 33a together with the fitting member 33a. A convex portion 35c provided on the back surface of the flat plate member 35 and fitted in the concave portion 33a, and a non-return member that is erected on the surface of the flat plate member 35 and can be locked to a panel of a counterpart member such as a vehicle body or electric equipment. Locking body (locking member) 36
And is composed of In this embodiment, the metal plate 31, the metal pins 32a and 32b, and the resin clip 34 constitute the connecting member 37.

With such a connecting member 37, for example,
When the circuit conductors 23a and 23c shown in FIG. 1 are connected to each other, the metal pins 32a and 32b are penetrated through the circuit conductors 23a and 23c, and the tips of the metal pins 32a and 32b are ultrasonically welded to each other. By welding 32b to the insulating film 22b, the circuit conductors 23a and 23c of the same FPC 21 can be electrically connected to each other through the metal pins 32a and 32b and the metal plate 31.

Next, the fitting member 33 is fitted to the fitting member 33.
By fitting the resin clip 34 to the metal plate 31 by fitting the projection 35c into the recess 33a and then locking the non-return locking body 36 to the panel of the vehicle body or electric equipment. Install FPC21 on the panel. As a result, the FPC 21 can be attached to the panel using the connecting member 37, and the multifunctional connecting member 37 can be obtained.

[0016]

According to the first aspect of the present invention, the circuit conductors of the same flat conductor wiring board can be electrically connected to each other through the metal pin and the metal plate. Usability can be improved. According to the second aspect of the invention, the metal pin can be penetrated through the plurality of circuit conductors to electrically connect the circuit conductors of the same flat conductor wiring board through the metal pin and the metal plate, The usability of the flat conductor wiring board can be improved. In addition to this,
The flat conductor wiring board can be attached to the panel by fitting the resin clip on the back surface of the metal plate and engaging the resin clip with the panel of the counterpart member such as the vehicle body or electric equipment. A connection member can be obtained.

[Brief description of the drawings]

FIG. 1 is a diagram showing a method of connecting circuit conductors of a flat conductor wiring board according to the present invention and a first embodiment of a connecting member for achieving the connecting method, wherein FIG.
The figure which shows C, (b) is sectional drawing of the FPC.

FIG. 2 is a diagram showing a procedure of attaching the connecting member of the first embodiment to the FPC.

FIG. 3 is a diagram showing a second embodiment of a method for connecting circuit conductors of a flat conductor wiring board according to the present invention and a connecting member for achieving the connecting method, and FIG. 2B is an exploded view of the metal plate and the resin clip, and FIG. 6B is a view showing a state in which the resin clip is attached to the metal plate.

FIG. 4 is an exploded configuration diagram of a conventional FPC.

FIG. 5 is a configuration diagram of another conventional FPC.

[Explanation of symbols]

 21 FPC (Flat conductor wiring board) 22a, 22b Resin film 23a-23d Circuit conductor 24, 25, 37 Connection member 26, 27, 31 Metal plate 26a, 26b, 27a, 27b, 32a, 32b Metal pin 33 Fitting member (First fitting part) 34 Resin clips 35a, 35b Fitting member (second fitting part) 36 Non-return locking body (locking member)

Claims (2)

[Claims] 1. A connection method for connecting a plurality of circuit conductors covered with an insulating film and provided in the extending direction of the insulating film, the metal plate having a plurality of metal pins erected on its surface. A method for connecting circuit conductors of a flat conductor wiring board, comprising: preparing a connecting member made of, and penetrating a plurality of circuit conductors with the metal pins, and welding the tips of the metal pins to an insulating film. 2. A connecting member which is covered with an insulating film and which connects a plurality of circuit conductors provided in the extending direction of the insulating film, the metal plate having a plurality of metal pins erected on the surface thereof. And a first fitting portion provided on the back surface of the metal plate, a second fitting portion that can be fitted into and removed from the first fitting portion, and a locking member that can be locked to a mating member. A resin clip and a connecting member for a circuit conductor of a flat conductor wiring board.