JP2003018718A - Structure and method for connecting conductor of flexible flat harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of man-hours and obtain environmental protection measures by providing a splice means in a flexible flat harness. SOLUTION: In the flexible flat harness 10 wherein conductors 12, 13, 14, 15 and 16 each composed of a stripped copper foil are wired in parallel and laminated by insulation resin films 11, a structure is configured such that: the conductors are connected; the one conductor 12 among a plurality of conductors 12, 13 and 14 that are connected with each other is extended and folded so as to be piled on the other conductors 13, 14; and the piled conductors 12, 13 and 14 are connected by welding or soldering.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductor connecting structure and a connecting method for a flexible flat harness, and more particularly to splicing connecting conductors of a flexible flat harness.

[0002]

2. Description of the Related Art As the above-mentioned flexible flat harness, there is provided a flexible flat harness 1 formed by laminating both surfaces of a parallel-wired conductor 3 with insulating resin films 2 as shown in FIG. When forming a branch circuit in a circuit including the flexible flat harness 1, as shown in FIG. 9, for example, connection is made via connectors 4 and 5 for branch connection (so-called splice) between conductors. Splice connection is performed at the electric wire w portion (or directly connected without using a connector).

Specifically, the connector 4 attached to the tip of the flexible flat harness 1 and the connector 5 attached to the tip of the electric wire w are connected to each other, and the insulation coating of the required electric wire w is peeled off in the electric wire w group. After connecting the exposed conductors 6 to each other, a splice portion S is provided by winding a tape (not shown).

[0004]

However, with the above-mentioned structure, there is a problem that the cost is increased due to the labor required for winding the tape in addition to the work for connecting the conductors 6 having the exposed electric wires w. Further, since vinyl chloride tape is usually used as the tape, the amount of chlorine increases at the time of disposal, which is not preferable in the environment.

[0005] When an electric wire or the like is not used in the circuit in addition to the flexible flat harness, splicing must be performed on the flexible flat harness 1 side. However, it has been difficult to splice a thin-walled conductor in a splice connection such as the above-mentioned electric wire because such a conductor is used.

The present invention has been made in view of the above problems, and an object thereof is to provide an optimum splicing means for a flexible flat harness, thereby reducing the number of work steps and taking environmental measures.

[0007]

In order to solve the above-mentioned problems, the present invention firstly provides a flexible flat harness in which conductors made of strip-shaped copper foil are wired in parallel and laminated with an insulating resin film, In the structure for connecting the conductors to each other, one conductor of a plurality of conductors to be connected to each other is extended and then bent and overlapped with another conductor, and the overlapped conductors are welded or soldered to each other to be connected. The present invention provides a conductor connection structure for a flexible flat harness, which is characterized in that

With the above structure, the conductors are connected to each other by welding or soldering and there is no need to wind the tape. Therefore, the number of working steps can be reduced and chlorine contained in the tape at the time of disposal can be reduced. Environmental pollution due to can be prevented. Further, since only one conductor among the conductors connected to each other is extended, no separate member is required, and in the connection work, only one conductor is bent and overlapped with another conductor. As a result, the work man-hours are significantly reduced.

Further, unlike the case of splicing an electric wire, the conductors connected to each other are not pulled by hand, so that the conductors can be prevented from being twisted and the conductors can be prevented from being broken, and the flexible flat harness itself can be prevented. It doesn't twist, and it looks smart.

With respect to the conductors connected to each other, only the conductors are extended from one end edge of the laminate layer, the extension amount of the one conductor is larger than that of the other conductors, and the conductors are overlapped with the tips of the other conductors in a bent state. , At the overlapping portion.

With the above arrangement, the conductor can be easily extended from the one end edge and the conductor extending from the one end edge only by peeling off the laminate layer at the tip portion to expose the conductor. With respect to the amount of protrusion, it is possible to easily make the extension amount of the one conductor larger than that of the other conductor only by adjusting the cut portion.

Further, the conductors which are connected to each other are covered with a laminate layer, the laminate layer is peeled off at the connection point, and the bent conductor is selectively connected to any conductor among other parallel conductors. Is also suitable.

With the above arrangement, in the region where the conductor to be bent and the other conductors in parallel are overlapped with each other, the coating is peeled off at a place to be conducted, and the coating is left at a place which is not desired to be conducted. A branch connection can be made. For example, since the extended conductor is simply bent so that the conductor to be bent and the conductor adjacent to each other are overlapped with each other, the remaining coating is interposed between the conductor and the adjacent conductor. It is possible to make it non-conductive, and it is possible to provide a splice structure with the conductor at a position separated by skipping the adjacent conductor.

Secondly, according to the present invention, in a flexible flat harness in which conductors made of strip-shaped copper foil are wired in parallel and laminated with an insulating resin film, a plurality of terminal fittings are connected to one conductor. In the structure described above, of the parallel wiring conductors, an arbitrary conductor is extended from the laminate layer, and a plurality of terminal fittings are superposed on the extended portion with a gap, and welding or soldering is performed. Provided is a conductor connection structure for a flexible flat harness, which is characterized by being connected.

According to the above structure, since a plurality of terminal fittings are welded or soldered to one of the extending portions at intervals, a splice structure having a branch opposite to the above-described splice is provided. be able to. In addition, by connecting the plurality of terminal fittings to the extending portion in a right angle direction, the terminal fittings are aligned in the longitudinal direction of the flexible flat harness only by bending the extending portion at a right angle, and thus workability is also good. .

[0016] Thirdly, according to the present invention, the terminal metal fitting is inserted and locked in the cavity of the connector, and the plurality of terminal metal fittings protruding in parallel from the cavity are laminated by a spacer made of a rigid body to form a laminate layer of a flexible flat harness. A conductor connection method for a flexible flat harness is provided in which the terminal fitting and the conductor of the flexible flat harness are soldered or welded in this state by positioning and fixing the conductor on a more protruding conductor.

According to the above method, since the terminal fitting is inserted and locked in advance in the cavity of the connector, and one of the protruding conductors of the flexible flat harness is superposed and positioned and fixed by the spacer first, the flexibility is achieved. Soldering or welding connection between the conductor of the flat harness and the terminal fitting can be performed easily and reliably. Further, since a plurality of terminal fittings are connected per conductor as described above, a connector having a splice structure inside can be easily formed.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a first embodiment. As in the case of FIG. 8, the flexible flat harness 10 is covered with the insulating resin film 11 on both sides of the five conductors 12, 13, 14, 15, 16 which are wired in parallel.

As shown in FIG. 1A, five conductors 1
2, 13, 14, 15, and 16 are exposed from the tip of the insulating resin film 11, and the conductor 12 above the paper surface has a long protruding amount. An intermediate portion of the long conductor 12 is bent at a right angle below the plane of the drawing as a bent portion 12a, and as shown in FIG.
They are welded (or soldered) so as to be superposed on the tip portions of 3 and 14.

With the above-mentioned structure, only one conductor can be bent to be overlapped with the tip of the other conductor, and the conductors are connected to each other by welding or soldering to wind the tape. Since it is not necessary, the work man-hours are greatly reduced. In addition, it is possible to prevent environmental pollution due to chlorine contained in the tape at the time of disposal.

In the present embodiment, the splice portion is provided at one location by the conductors 12, 13, 14; however, when two or more splice portions are provided, two or more elongated conductors are provided. It should be provided.

FIG. 2 shows a second embodiment. The difference from the first embodiment is that the conductor 12 protruding from the tip of the insulating resin film 11 is partially covered.

The flexible flat harness 10 'is
As shown in FIG. 2 (A), the insulating resin film 11 is left on a part of the long conductor 12 without being peeled off to form an insulating portion 11a. When the conductor 12 is bent at a bent portion 12a at a right angle to the lower side of the paper and is overlapped with the tips of the adjacent short conductors 13 and 14 as shown in FIG. 1B, the insulating portion 11a is formed.
Is interposed between the conductor 12 and the conductor 13, the conductor 12 and the conductor 13 are non-conducting, while the conductor 12 and the conductor 14 are in direct contact with each other so that they are conducting. Therefore, conductor 1
2 and the conductor 14 are welded (or soldered) to each other, the adjacent conductors 13 are skipped and the conductors 14 are separated.
Is spliced. With the above structure, the long conductor 1
Despite the simple folding of 2, the connection can be made selectively.

In the present embodiment, the insulating portion 11a is provided on the long conductor 12 side, but it goes without saying that the insulating portion may be provided on the short conductor 13 side.

FIG. 3 shows a third embodiment. Figure 3 (A)
As shown in FIG. 2, the conductors 22 and 2 projected from the tip of the insulating resin film 21 of the flexible flat harness 20.
Of the three, the conductor 22 on the left side of the drawing has a large protrusion amount to be long. Terminal fittings 25 are welded (or soldered) one by one to the tips of the three short conductors 23 having a small amount of protrusion so as to protrude upward from the paper surface. Replace the two terminal fittings 24 with the above-mentioned terminal fitting 2
5 is welded (or soldered) at a required interval in the right angle direction and is projected to the left in the drawing.

As shown in FIG. 3B, when the long conductor 22 is bent at the intermediate portion 22a at a right angle to the left side of the drawing, all the terminal fittings 24 and 25 face in the same direction, and the conductor 22 And the two terminal fittings 24 form a spliced parallel circuit.

4 and 5 show a fourth embodiment. As shown in FIG. 4 (A), five terminal fittings 24, 25 are inserted and locked in advance in the cavity 27 of the connector 26 made of synthetic resin. At this time, inside the connector 26, the end portions 2 of the terminal fittings 24, 25 are more than the peripheral walls of the cavities 27.
4a and 25a are slightly projected. The flexible flat harness 20 similar to that of the third embodiment is used for the long conductor 2
2 is bent at a right angle at the bent portion 22a, and is inserted into the connector 26 from the conductor protruding side (arrow in the figure).

Then, as shown in FIG. 4 (B), the three short conductors 23 are superposed one by one on the terminal fittings 25, while the one long conductor 22 is orthogonal by bending. The two terminal fittings 24 are superposed on each other in the direction. Then, as shown in FIG. 4C, the overlapping portions of the conductors 22 and 23 and the terminal fittings 24 and 25 are pressed down by the spacer 28 made of synthetic resin, and the conductors 22 and 23 are
The contact between the terminal fittings 24 and 25 is positioned and fixed.

In this state, the conductors 22 and 23 and the terminal fitting 2
When welding and soldering (or soldering) with No. 4 and 25, the connecting work can be performed easily and surely, and the flexible flat harness spliced inside the connector 26 is completed. Note that FIG. 5 shows a state in which the other side circuit constituted by the electric wire w is connected to the connector 26, 29 by coupling, and a branch circuit is formed in the electric wire w portion without providing a tape winding splice ( The wire w side is 5
In terms of circuits, the flexible flat harness 20 side is 4 circuits), which is excellent in terms of workability and environmental measures.

6 and 7 show a fifth embodiment. The difference from the fourth embodiment is that the branching direction is reversed.

Cavity 3 of connector 30 made of synthetic resin
The three terminal fittings 31 and 32 are previously inserted and locked to the terminal 3. At this time, each cavity 3 inside the connector 30
End portions 31a, 3 of the terminal fittings 31, 32, rather than the peripheral wall of 3.
2a is slightly projected. In the flexible flat harness 10 similar to that of the first embodiment, the long conductor 12 is bent at a bent portion 12a at a right angle and adjacent conductors 13 and 14 are provided.
In the state of being connected to the connector 30, it is inserted into the connector 30 from the conductor protruding side (arrow in the figure).

Then, as shown in FIG. 6B, the two short conductors 15 and 16 are superposed on the terminal fittings 32 one by one, while the long conductor 12 is folded back. It is overlapped with the terminal fitting 31. Then, similarly to FIG. 4C of the fourth embodiment, the overlapping portions of the conductors 12, 15, 16 and the terminal fittings 31, 32 are pressed down by a spacer (not shown) made of synthetic resin, and the conductor 12 , 15, 1
The contact between 6 and the terminal fittings 31 and 32 is positioned and fixed.

In this state, the conductors 12, 15, 16 and the terminal fittings 31, 32 are welded (or soldered) to complete a flexible flat harness spliced inside the connector 30. Note that FIG. 7 shows a state in which the other side circuit constituted by the electric wire w is connected by coupling the connectors 26 and 29. The branching direction is opposite to that of the fourth embodiment (the electric wire w side has three circuits, and the flexible flat harness). There are 5 circuits on the 10 side).

[0034]

As is apparent from the above description, according to the present invention, it is not necessary to wind the tape for connecting (splicing) the conductors to each other, so that the number of working steps can be reduced and the time of disposal can be reduced. It is also possible to prevent environmental pollution due to chlorine contained in the tape. Further, in the connection work, since it is possible to overlap with other conductors only by bending the long conductor, it is possible to significantly reduce the number of work steps. Also, since the conductors that are connected to each other are not pulled together,
It is possible to prevent the conductor from breaking without being twisted.
In addition, if the coating is left at the contact portion that is desired to be non-conductive among the plurality of other conductors that are overlapped at the time of bending, the bent conductor may be selectively connected to any conductor of other parallel conductors. It will be possible.

Of the above-mentioned parallel wiring conductors,
When a plurality of terminal fittings are connected to a long conductor extending from the laminate layer, a splice structure in which a plurality of terminal fittings are branched and connected to one conductor (branching in the direction opposite to the above splice) You can

When the terminal fitting is inserted and locked in the cavity of the connector in advance, and one protruding conductor of the flexible flat harness and the terminal fitting are overlapped and positioned and fixed by the spacer, Soldering or welding connection between the conductor and the terminal fitting can be performed easily and surely, and an internally spliced connector can be easily formed.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the present invention, (A) is a front view before connection, and (B) is a front view after connection.

FIG. 2 shows a second embodiment, (A) is a front view before connection, and (B) is a front view after connection.

FIG. 3 shows a third embodiment, (A) is a front view before bending, and (B) is a front view after bending.

FIG. 4 shows a fourth embodiment, (A) is a drawing before inserting a conductor, (B) is a drawing after inserting a conductor, and (C) is a drawing showing positioning by a spacer.

FIG. 5 is a front view of the fourth embodiment.

FIG. 6 shows a fifth embodiment, (A) is a drawing before inserting a conductor, and (B) is a drawing after inserting a conductor.

FIG. 7 is a front view of a fifth embodiment.

FIG. 8 is a partial cross-sectional perspective view of a flexible flat harness.

FIG. 9 is a front view showing a conventional splice structure.

[Explanation of symbols]

10, 20 Flexible flat harness 11 Insulating resin film 11a insulation part 12 Long conductor 12a Bent section 13, 14, 15, 16 Short conductor 24, 25, 31, 32 terminal fittings 26, 30 connector 27,33 cavity 28 Spacer w electric wire

Claims (5)

[Claims] 1. A flexible flat harness in which conductors made of strip-shaped copper foil are wired in parallel and laminated with an insulating resin film, wherein the conductors are connected to each other, and a plurality of conductors are connected to each other. 1. A conductor connection structure for a flexible flat harness, wherein one conductor is extended and then bent and overlapped on another conductor, and the overlapped conductors are connected by welding or soldering. 2. The conductors to be connected to each other extend only from one end edge of the laminate layer, the one conductor has a larger extension amount than the other conductors, and a tip portion of the other conductor in a bent state. 2. The conductor connection structure for a flexible flat harness according to claim 1, wherein the conductor connection structure overlaps with each other and is connected at the overlapping portion. 3. The conductors to be connected to each other are covered with a laminate layer, the laminate layer is peeled off at a connection point, and the bent conductor is selectively connected to any conductor among other parallel conductors. The flexible flat harness conductor connection structure according to claim 1. 4. A flexible flat harness in which conductors made of strip-shaped copper foil are wired in parallel and laminated with an insulating resin film, wherein a plurality of terminal fittings are connected to the one conductor. Of the conductors that are wired, an arbitrary conductor is extended from the laminate layer, a plurality of terminal fittings are overlapped with each other at intervals in the extended portion, and are connected by welding or soldering. Flexible flat harness conductor connection structure. 5. A conductor on which a terminal fitting is inserted and locked in a cavity of a connector, and a plurality of the terminal fittings protruding in parallel from the cavity are projected from a laminate layer of a flexible flat harness by a spacer made of a rigid body. A method for connecting a conductor of a flexible flat harness, in which the terminal fitting and the conductor of the flexible flat harness are soldered or welded in this state.