JPH08203623A - Tape wire with reinforcing plate - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the workability when inserting a tape electric wire into a connector and to improve the reliability of the tape electric wire in a use state after insertion. [Structure] At the end portion of the tape electric wire in which the plastic reinforcing plate is adhered from one side of the conductor exposed from the end of the tape electric wire to one side of the insulating tape coating, the portion of the reinforcing plate adhered to the insulating tape is In the area ratio of the cross section, the area ratio of the cross-linking-hardened portion is sequentially made larger in the exposed conductor direction than the area ratio of the uncured flexible portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape electric wire which is used for internal wiring of electronic equipment and has a reinforcing plate at a terminal which can be inserted into a connector.

[0002]

2. Description of the Related Art Conventionally, as a tape electric wire having a reinforcing plate at its end, as shown in FIG. 3, thin rectangular flat foil conductors 13 are arranged at required intervals, and two upper and lower surfaces are arranged.
The plastic tape 15A, 15B is used to fix the entire length of the tape, and the flat rectangular conductor 13 at a part of the tip is exposed and projected. A reinforcing plate 17 is attached to one surface of the conductor 13.

The reinforcing plate 17 has a thickness of about 200 .mu.m and is extremely thin. Since it cannot be freely attached to and detached from the connector as it is, it is a plate-like member made of plastic from one side of the exposed conductor to the insulating tape on the same side. The reinforcing body is attached with an adhesive.

The terminal thickness of the tape electric wire provided with the reinforcing plate as described above is a thickness determined by fitting with the connector,
It cannot be changed.

Further, the thickness of the reinforcing plate is made uniform in all parts.

[0006]

When the tape electric wire as described above is attached to or detached from the connector, the reinforcing tape and the tape electric wire main body are simultaneously held in the hand and pushed in or pulled out.

At this time, as shown in FIG. 4, for example, when the tape electric wire is inserted into the connector, the reinforcing wire is bent so that the tape electric wire bends and the reinforcing plate peels from the insulating tape (portion H in FIG. 5). As a result, there is a problem that the tape electric wire cannot be used (see FIG. 5).

Further, in the state of use after being inserted into the connector, there is an extreme difference in bending strength between the hard reinforcing plate and the flexible tape wire, stress concentration always occurs on the boundary line, and fatigue occurs. There was a problem that the electric wire itself was damaged (see Fig. 6).

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and the tape electric wire main body is damaged when the connector is attached to or detached from the connector without impairing workability and reliability. Tape wire that does not peel off from the reinforcing plate and does not damage the tape wire body due to stress concentration in the usage state after being attached to the connector. The purpose is to do.

In order to achieve such an object, the present invention is characterized in that flexibility is imparted to the side of the reinforcing plate attached to the end portion of the tape electric wire which is bonded to the tape electric wire insulating tape. One of the means is to use a cross-linking-hardening plastic tape, for example, as a tape of four tapes each having a rectangular shape in a plane rectangular shape in which the lengthwise sides of the tape are sequentially shortened. The four tapes are made into tapes of which the sides in the length direction of the plane rectangular tape are sequentially lengthened, and the tapes are laminated and the slopes of each laminate are joined (of course, not cured by crosslinking. It is also possible to stack different tapes in order from the widest one, and then turn them over and join them.) It is a reinforcing body formed in an integral plate shape.

Alternatively, four identical rectangular plastic tapes are cross-linked and cured, leaving one side of each tape.
It is a reinforcing body formed by laminating four sheets of the tape whose areas are sequentially increased so as to be left in the form of a plate.

Another means is to form a slit in the portion of the reinforcing body on the tape electric wire side (the side opposite to the exposed conductor).

[0013]

The tape electric wire having the reinforcing plate of the present invention has a plate-like structure in which flexibility is imparted to the side of the reinforcing plate adhered to the vicinity of the conductor protruding portion of the terminal portion on the side of the tape electric wire adhered to the insulating tape. Therefore, it has the following operational characteristics.

Since the terminal portion has a predetermined thickness for fitting with the connector, it can be easily attached to and detached from the connector.

It is possible to prevent the insulating tape and the reinforcing plate from peeling off when the connector is inserted into the connector.

In the state of use after being inserted and attached to the connector, stress concentration does not occur at the boundary between the reinforcing plate and the tape electric wire, so that the tape electric wire is not damaged.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

1 (a) and 1 (b) show an embodiment of claim 1 of the present invention, in which (a) is a side view of a tape wire and (b) is a side sectional structure view of a reinforcing plate. The reinforcing plate 7 is attached so as to straddle the exposed conductor 3 of the tape electric wire 1 and the insulating tape 5. The reinforcing plate 7 is made of polyester tape, for example, and is formed by laminating four tapes each having a thickness of 50 μm.
The tape on the side of the exposed conductor 3 is a cross-linked and hardened tape 7a, and a tape having rectangular sides of the tape electric wire in the length direction is sequentially laminated. On the other hand, the tape on the opposite side is a flexible tape 7b that does not crosslink and harden, and tapes whose sides in the tape electric wire length direction are sequentially lengthened are laminated. This laminated body is made into a plate-like body by integrally joining the inclined surfaces to each other to form a reinforcing plate 7.

Alternatively, the reinforcing plate 7 is formed as follows. That is, four identical rectangular polyester tapes are cross-linked and cured, leaving one side of each tape alone, and the four tapes whose areas are successively increased to be left are laminated to form an integral plate.

FIGS. 2A and 2B show an embodiment of claim 2 of the present invention, wherein FIG. 2A is a side view of a tape wire and FIG. 2B is a plan view of a reinforcing plate. In this embodiment, a reinforcing plate 9 made of plastic is provided with a slit 9a on the side where the tape electric wire insulating tape is attached. The reinforcing plate 9 of the example has a thickness of 200 μm, and the width of the slit 9 a is 50 to 50 μm.
The depth is 300 μm and the depth is 50 to 150 μm. It is effective that the intervals between the slits 9a are sequentially increased in the exposed conductor direction.

A specific example of the tape electric wire having the reinforcing plate of the present invention will be described. One of tape-shaped conductors having a thickness of 50 μm and a width of 0.5 mm made of copper whose surface is tin-plated.
Place the two wires in parallel on the same surface at 0.3 mm intervals, and attach both surfaces with a polyester film to make a tape wire with a thickness of 200 μm.
Strip the conductor to completely expose the conductor.

The above-mentioned reinforcing plate 7 or reinforcing plate 9 is
It was applied over the exposed conductor and the polyester film coating over a length of 12 mm.

It goes without saying that the reinforcing plate according to the present invention can be applied to a flexible printed circuit board (FPC).

[0024]

According to the present invention, since the terminal portion has a predetermined thickness for fitting with the connector, it can be easily attached to and detached from the connector.

It is possible to prevent peeling between the reinforcing plate and the tape electric wire when the connector is inserted into the connector. Furthermore, since stress concentration does not occur at the boundary between the reinforcing plate and the tape electric wire in the use state after being inserted and attached to the connector, the tape electric wire can be less likely to be damaged.

[Brief description of drawings]

FIG. 1 is a side view of a tape wire according to an embodiment of the present invention. (B) is a side sectional structure view of the reinforcing plate.

FIG. 2 is a side view of a tape wire according to another embodiment of the present invention. (B) is a plan view of the reinforcing plate.

FIG. 3 is an explanatory view of a tape electric wire having a reinforcing plate of a conventional example, in which (a) is a bottom view. (B) is a side sectional view.

FIG. 4 is an explanatory view of a state where a tape electric wire is inserted into a connector.

FIG. 5 is a view showing a state where the reinforcing plate is peeled off from the tape electric wire when the tape electric wire is inserted into the connector of the conventional example.

FIG. 6 is a side view conceptually showing the state of the tape electric wire during use after inserting the conventional tape electric wire into the connector.

[Explanation of symbols]

 1,11 Tape electric wire 3,13 Exposed conductor 5,15 Insulation tape 7,9,17 Reinforcing plate 7a Cross-linking hardening part 7b Non-hardening flexible part 9a Slit 20 Connector

Claims (2)

[Claims] 1. A plastic reinforcing plate is attached from an exposed conductor on one surface of the tape wire to an insulating tape coating at the end of the tape wire in which a plurality of parallel conductors are sandwiched by an insulating tape. In the end portion of the tape electric wire, the portion adhered to the insulating tape of the reinforcing plate, in the area ratio of the cross section at right angles to the length direction, the area ratio of the crosslinked and hardened portion is A tape electric wire having a reinforcing plate, characterized in that the area ratio is successively increased in the exposed conductor direction. 2. The end portion of the tape electric wire according to claim 1, wherein a plurality of slits are provided in a surface layer of the reinforcing plate on the side where the insulating tape is attached, in a direction perpendicular to the length direction. Tape electric wire with a reinforcing plate.