JP2553870B2 - Manufacturing method of taped electric wire with shield - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] A tape electric wire 16 as illustrated in FIG. 4 is used for internal wiring of various electronic and electric devices such as computers, printers, audios, VTRs, and measuring instruments. Has been done.

This is one in which a plurality of conductors 10 (round or rectangular) are arranged in a row in parallel with each other at an equal pitch p, and are sandwiched and integrated from above and below by an insulating layer 14 with an adhesive layer 12. Is.

FIG. 5 shows an example of the usage status of the tape electric wire 16,
Is a connector and 20 is a printed circuit board.

On the other hand, it is necessary to shield the tape electric wire 16 in order to prevent EMI (electromagnetic interference) and stabilize the characteristic impedance.

The present invention relates to a method of manufacturing an electric wire in which the above-described tape electric wire 16 is shielded.

[Prior Art] (1) As shown in FIG. 6, a shield layer 22 is provided on one side or both sides of the tape electric wire 16.

(2) As shown in FIG. 7, the tape electric wire 16 is wrapped with the shield layer 22.

I am taking such a method.

[Problems to be Solved by the Invention] In the above case, in order to drop the shield layer 22 to the drain, it is necessary to newly connect the drain wire 32 to the shield layer 22 as shown in FIG. 6, for example. .

[Means for Solving the Problems] The present invention eliminates the need for specially connecting the drain wire, and one of the conductors 10 of the tape electric wire 16 (if necessary,
(More than that) 10a can be used for the drain, and after providing the shield layer 22 on at least one side of the insulating layer 14 as shown in FIGS. 1a to 1d,
At least one of the conductors 10a and the shield layer 22 are ultrasonically fused.

[Explanation] As shown in FIG. 1a, a shield layer 22 is provided, for example, on one side of the tape electric wire 16 described above.

Then, as shown in FIG. 1b, by the mouthpiece 34 of a known ultrasonic fusion machine, the conductor 10a for the drain and the shield layer 22,
Ultrasonic welding is performed at appropriate intervals (Figs. 1c and 1d).
Reference numeral 44 indicates a fused portion.

By applying ultrasonic vibration, the insulating layer 14 between the conductor 10a and the shield layer 22 is removed, and the conductor 10a and the shield layer 22 are electrically connected.

Note that the fused portion 44 may not be spot-shaped as described above, but the shape of the mouthpiece 34 may be changed (such as a rotatable disc shape) so as to cover the entire length in the longitudinal direction of the conductor.

The above-mentioned FIGS. 1a to 1d show the case where the conventional ordinary tape electric wire 16 is provided with a shield, but when it is provided with a shield from the beginning, the following is performed.

That is, as shown in FIG. 2a, a composite tape 30 including an adhesive layer 12, an insulating layer 14, a shield layer 22, and an insulating layer 24 is used, and the composite tape 30 is attached to the upper and lower sides of the conductor 10 arranged at the same intervals (second b
Figure).

After that, spotwise or continuous ultrasonic welding is performed between the drain conductor 10a and the shield layer 22 in the same manner as described above (Fig. 2c). -Shaped or mesh-shaped metal such as copper or aluminum is used.

 36 shows the whole shield tape electric wire.

[Operation] FIG. 3 shows an example of the usage status of the shield tape electric wire 36. In the figure, the connector 18 is drawn up and the substrate 20 is drawn down.

The shield tape electric wire 36 can be used in the same manner as the conventional tape electric wire 16.

Since the conductor 10a is electrically connected to the shield layer 22, it can be used as it is as a drain wire.

When the pin 38 of the connector 18 is inserted into the pin hole 40 of the printed circuit board 20, the pin 38 connected to the conductor 10a becomes a grounding conductor 42.
And the shield layer 22 of the shield tape electric wire 36 is grounded.

[Advantages of the Invention] (1) Since the conductors 10a to be the drain wires are arranged at the same interval p as the other conductors 10, while having a shielding effect,
Wiring (connector connection, soldering connection, etc.) can be performed in the same way as the conventional tape electric wire 16.

(2) The drain wire can be easily formed at any position of the conductor.

(3) By using such a composite tape 30 as shown in FIG. 2a, the conventional tape wire manufacturing technique can be used as it is, and an ultrasonic fusion process can be added thereto.

[Brief description of drawings]

FIGS. 1a to 1d relate to an embodiment of the present invention, FIGS. 1a and 1b are explanatory views of a situation before and after ultrasonic fusion, and FIG. 1c is a plan view after ultrasonic fusion, FIG. 1d is an enlarged cross-sectional view taken along the line DD of FIG. 1c, FIGS. 2a to 2c are explanatory views showing the order of steps of another embodiment of the present invention, and FIG. 3 is a shield tape electric wire of the present invention. 36 is an explanatory view of the usage status, FIG. 4 is an explanatory view of the conventional tape electric wire 16, FIG. 5 is an explanatory view of the usage status thereof, and FIGS. 6 and 7 show the conventional tape electric wire 16 with a shield. Explanatory drawing of the example where a method differs. 10: Conductor, 12: Adhesive layer 14: Insulation layer, 16: Tape electric wire 18: Connector, 20: Printed circuit board 22: Shield layer, 24: Insulation tape 30: Composite tape, 32: Drain wire 34: Base, 36: Shield Tape wire 38: Pin, 40: Pin hole 42: Grounding conductor, 44: Fusion part

Claims (1)

(57) [Claims] 1. A plurality of conductors 10 arranged in a row in parallel with each other,
Arrange at equal pitch, and provide the insulating layer 14 on the upper and lower sides of them,
A method of manufacturing a shielded tape electric wire, comprising providing a shield layer 22 on at least one side of an insulating layer 14 and then ultrasonically welding at least one of the conductors 10 and the shield layer 22.