JP4196313B2 - Connection method and connection structure between flexible electrode strip and substrate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection method and a connection structure between a shielded flexible electric wire strip and a substrate.
[0002]
[Prior art]
Some internal wiring of aircraft-mounted electronic devices are required to operate normally in a heat-resistant environment, for example, 120 ° C. FIG. 5 shows a flexible electric wire band 1 used in such a heat-resistant environment, which is often used as a jumper wire. The flexible electric wire band 1 is formed by arranging a plurality of flat electric wires 2 which are flat and normal at both ends in parallel, covered with a flexible insulating resin 3, and formed into a sheet shape. As the insulating resin 3, a polyimide resin is used, and the heat resistant temperature is about 260 ° C. The insulating resin 3 is a semi-transparent material with a light color so that the electric wire inside can be seen.
[0003]
FIG. 6 shows a method for connecting the flexible wire strip and the substrate. The substrate 4 is provided with through holes 5 at the same pitch as that of the wires of the flexible wire strip 1. The through hole 5 is made of a conductive metal and is connected to a conductive wire in the substrate 4. Each electric wire of the flexible electric wire band 1 is inserted into a predetermined through hole 5 and bonded with solder 6. A heat-resistant shielded electric wire 7 shown in FIG. 7 is used as an electric wire that needs to be shielded electromagnetically in a heat-resistant environment. The shielded electric wire 7 surrounds the core wire 10 with an insulating resin 9 and is covered with a shield 8 made of a metal net.
[0004]
[Problems to be solved by the invention]
When laying the heat-resistant shielded electric wire 7, the laying route is set, the shield 8 is peeled off, the core wire 10 is peeled off from the insulating resin 9, and the substrate or connector is connected to the core wire 10 and the shield 8. Further, the shield wire 7 is bundled and fixed. When the number of shield wires 7 increases, such a process requires a lot of man-hours.
[0005]
The present invention has been made to solve such problems. That is, an object of the present invention is to provide a connection method and a connection structure between a flexible electric wire band and a substrate, which are shielded by a simple method.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, there is provided a method of connecting a flexible electric wire band in which a plurality of electric wires are arranged in parallel and joined in a plane with a flexible insulating resin, to the substrate. A first metal tape is affixed to the substrate-side surface of the flexible electric wire band, and a second metal tape is affixed to the surface of the flexible electric wire band opposite to the substrate. Is inserted into and connected to the first through hole of the substrate, and the second metal tape , the insulating resin between the wires of the flexible wire strip , the first metal tape, and the second through hole connected to the ground wire in the substrate the through conductive pin connects the second metallic tape and the second through-hole by connecting the conductive pins and the second through hole electrically, conductive and first metal tape and a second through hole Adhesive with conductive adhesive or conductive double-sided adhesive tape .
According to a second aspect of the present invention, there is provided a connecting structure for connecting a flexible electric wire band in which a plurality of electric wires are arranged in parallel and joined in a plane with a flexible insulating resin to a substrate, A first metal tape is affixed to a surface on the substrate side, a second metal tape is affixed to a surface opposite to the substrate of the flexible wire strip, and each wire of the flexible wire strip is a first of the substrate. The conductive pin is inserted into the through hole and connected to the second metal tape, the insulating resin between the wires of the flexible wire strip, the first metal tape, and the second through hole connected to the ground wire in the substrate. The second metal tape and the second through hole are electrically connected by connecting the conductive pin and the second through hole, and the first metal tape and the second through hole are electrically conductive. Bonded with adhesive or conductive double-sided adhesive tape .
[0007]
A shielding effect is generated by applying metallic tape (first metal tape and second metal tape) to a predetermined range on both sides of the flexible electric wire band. Each electric wire of the flexible electric wire band is inserted into the first through hole of the substrate and soldered, thereby being connected to a conductive wire wired in the substrate and connected to each through hole. By passing the conductive pin through the second metal tape , the insulating resin between the wires of the flexible wire strip , the first metal tape and the second through hole, and soldering the conductive pin and the second through hole, first metal tape made and a second metallic tape that is adhered to both sides can be connected to a ground line connected to the second through-hole, it is possible to exert a shielding effect.
[0008]
[0009]
[0010]
[0011]
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a state in which a metal tape 11 is affixed to the surface of the flexible wire strip 1 described in FIG. 5 so as to cover an electric wire that needs to be shielded. The metal tape 11 is affixed to both sides or one side depending on the necessity of shielding the electric wire. The metallic tape 11 is, for example, a thin copper plate, and an adhesive that does not deteriorate even at high temperatures is applied to the adhesive surface.
[0013]
FIG. 2 is a diagram showing an embodiment of the present invention . This embodiment is obtained by adhering a metallic tape 11 on both sides of the flexible wire strip 1. Hereinafter, the metal tape 11 affixed to the substrate 4 side is referred to as a “first metal tape”, and the metal tape 11 affixed to the surface opposite to the substrate 4 is referred to as a second metal tape. The substrate 4 is provided with first through holes 5 a corresponding to the number of wires of the flexible wire strip 1, and each is connected to a conductor in the substrate 4. The leading end of the electric wire 2 of the flexible electric wire band 1 is inserted into the first through hole 5 a and joined with the solder 6 to be connected to the conductive wire in the substrate 4. Also, a second through hole 5b connected to the ground wire in the substrate 4 is provided, and the flexible electric wire band 1 is attached so that the metal tape 11 on the substrate 4 side is placed on the second through hole 5b. Deploy.
[0014]
A conductive adhesive or a conductive double-sided tape 14 is provided between the first metal tape and the through-hole 5b, and both are mechanically and electrically securely connected. Next, the second metal tape, the insulating resin 3, the first metal tape, and the second through hole 5 b are penetrated by the conductive pin 13, and the tip portion and the through hole 5 b are joined by the solder 6. At this time, the insulating pin 13 passes between the electric wires 2 of the flexible electric wire band 1 and does not contact the electric wires 2. Thereby, the metal tape 11 on both sides is connected to the ground wire, and a shielding effect is exhibited. Further, the flexible electric wire band 1 is bonded to the end portion of the substrate 4 with a strong adhesive 15 so that the two are integrated. When separating the two for repair or the like, they can be easily separated by heating with a heat knife equipped with a nichrome wire or the like. Even if the conductive adhesive or the conductive double-sided tape 14 is not provided between the metal tape 11 and the through hole 5b, the metal tape 11 on the substrate 4 side is in contact with the through hole 5b, so Connected, the shielding effect is demonstrated.
[0015]
FIG. 3 is a diagram showing a first reference example . The first reference example is a case where the metal tape 11 is affixed only on the surface opposite to the surface in contact with the substrate 4 of the flexible wire strip 1. The substrate 4 is provided with through holes 5 a corresponding to the number of the electric wires 2 of the flexible electric wire band 1, and each of the through holes 5 a is connected to a conductor in the substrate 4. The tip of the electric wire 2 of the flexible electric wire band 1 is inserted into the through hole 5 a and joined with the solder 6, so that the lead wire in the substrate 4 is connected. In addition, a conductive pin 13 that penetrates the insulating tape 3 between the metallic tape 11 and the electric wire 2 of the flexible electric wire band 1 passes through the through hole 5b connected to the ground wire in the substrate 4, and this The tip of the pin 13 and the through hole 5 b are joined by the solder 6. Thereby, the metal tape 11 on one side is connected to the ground wire, and a shielding effect is exhibited. The electrical connection can be further ensured by bonding the head of the conductive pin 13 to the metal tape 11 with a conductive tape or a conductive adhesive. Further, the flexible electric wire band 1 is bonded to the end portion of the substrate 4 with a strong adhesive 15 so that the two are integrated. When separating the two for repair or the like, they can be easily separated by heating with a heat knife equipped with a nichrome wire or the like.
[0016]
FIG. 4 is a diagram showing a second reference example . The second reference example is a case where the metal tape 11 is affixed only on the surface of the flexible wire strip 1 that contacts the substrate 4. The substrate 4 is provided with through holes 5 a corresponding to the number of the electric wires 2 of the flexible electric wire band 1, and each of the through holes 5 a is connected to a conductor in the substrate 4. The tip of the electric wire 2 of the flexible electric wire band 1 is inserted into the through hole 5 a and joined with the solder 6, so that the lead wire in the substrate 4 is connected. In addition, a conductive pad 12 is attached to the surface of the substrate 4 and is connected to a through hole 5b connected to the ground wire in the substrate 4. The metal tape 11 is bonded to the pad 12 with a conductive adhesive or a conductive double-sided tape 14. Thereby, the metallic tape 11 is reliably connected to the ground wire, and a shielding effect is exhibited. Further, the flexible electric wire band 1 is bonded to the end portion of the substrate 4 with a strong adhesive 15 so that the two are integrated. When separating the two for repair or the like, they can be easily separated by heating with a heat knife equipped with a nichrome wire or the like.
[0017]
【The invention's effect】
As described above, the present invention can easily add a shielding property by applying a metal tape to a flexible electric wire band, and the connection with a substrate is also flexible by applying a metal tape. Since the wire strip and the through hole are joined by the conductive pin, the number of work steps can be greatly reduced and the cost can be reduced as compared with the case of using the conventional shielded wire.
[Brief description of the drawings]
FIG. 1 is a view showing a state where a metal tape is bonded to a flexible electric wire band.
FIG. 2 is a diagram showing a configuration of an exemplary embodiment of the present invention .
FIG. 3 is a diagram showing a configuration of a first reference example .
FIG. 4 is a diagram showing a configuration of a second reference example .
FIG. 5 is a diagram showing a configuration of a flexible electric wire strip.
FIG. 6 is a view showing joining of a conventional flexible electric wire band and a substrate.
FIG. 7 is a diagram showing a configuration of a shielded electric wire.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Flexible electric wire 2 Electric wire 3 Insulation resin 4 Board | substrate 5 Through hole 5a Through hole 5b connected to an electric wire Through hole 6 connected to an earth wire Solder 7 Shield electric wire 8 Shield 9 Insulating resin 10 Core wire 11 Metal Tape 12 Pad 13 Conductive pin 14 Conductive adhesive or Conductive double-sided tape

Claims (2)

A method of connecting a flexible electric wire band in which a plurality of electric wires are arranged in parallel and joined in a plane with a flexible insulating resin to a substrate,
Affixing a first metal tape to the substrate side surface of the flexible wire strip and a second metal tape to the surface of the flexible wire strip opposite the substrate,
Each wire of the flexible wire strip is inserted into the first through hole of the substrate and connected,
The second metallic tape, an insulating resin between wire flexible wire band, through a conductive pin into the second through holes connected to the ground wire of the first metallic tape and the substrate, the conductive pin and the second By connecting the through hole , the second metal tape and the second through hole are electrically connected,
A method of connecting a flexible wire strip and a substrate, wherein the first metal tape and the second through hole are bonded with a conductive adhesive or a conductive double-sided adhesive tape . A connection structure for connecting a flexible electric wire band in which a plurality of electric wires are arranged in parallel and joined in a plane with a flexible insulating resin to a substrate,
A first metal tape is affixed to the substrate side surface of the flexible wire strip, and a second metal tape is affixed to the surface of the flexible wire strip opposite the substrate;
Each electric wire of the flexible electric wire band is inserted and connected to the first through hole of the substrate,
A conductive pin is passed through the second metal tape, the insulating resin between the wires of the flexible wire strip, the first metal tape, and the second through hole connected to the ground wire in the substrate. By connecting the second through-hole, the second metal tape and the second through-hole are electrically connected,
A connection structure between a flexible electric wire strip and a substrate, wherein the first metal tape and the second through hole are bonded with a conductive adhesive or a conductive double-sided adhesive tape.

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