JPH03286593A - Structure of electric signal transmitting member and bonding method thereof - Google Patents

Abstract

PURPOSE:To eliminate an electric wire for solder bonding by opposing a copper foil pattern of an electric signal transmitting member provided with a through- hole and a solder-plated pattern, and then heating said member from its back by a solder iron so as to solder-bond the electrodes directly. CONSTITUTION:At the time of solder-bonding, an electrode part 21a consisting of a copper foil pattern and an electrode part 11a consisting of a solder-plated copper foil pattern which is to be solder-bonded with a member are opposed and bonded tightly. In a through-hole 12a of the solder-plated electrode 11a of an electric signal transmitting member 1, a projection part of a solder iron is inserted and heats that. The heat can be conducted easily through the opposed two electrode parts 11a and 21a, the solder-plating applied to at least either of them is fused and the direct solder bonding of the electric signal transmitting member can be done.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure and coupling method of electrical signal transmission members that are electrically coupled.

[Prior art] Conventionally, this type of technology is l) 1! The structure did not have a through hole because it was soldered to the air signal transmission member. 2) In the method of electrically coupling at least two members, an electrical signal transmission member having a copper foil pattern and a method of electrically coupling to the member include an electric wire as shown in FIG. This method was used to connect electrical signal transmission members.

That is, the printed circuit board 61 is an electrical signal transmission member.
．． 1 placed in 62! The l-pole parts 61a and 62a are connected to [
They were connected at 1j163.

[Problem to be solved by the invention] However, in the above-mentioned prior art 1), the thickness is thin (MAX
o, about 2mm) It was possible to weld the solder to polyester films by simply heating them from the back, but with epoxy printed circuit boards with a thickness of 0.6mm or more,
The thermal conductivity is poor, and even when heated with a soldering iron, the printed circuit board itself is damaged, making it impossible to make solder connections. Furthermore, it is extremely difficult to connect a plurality of electrode parts at the same time.

In particular, when the thickness of the printed circuit board exceeds a predetermined value (0.8 mm or more), even if it is heated from the back side, the heat does not transfer well to the surface on which the copper foil pattern is applied, and the board often burns out.

In prior art 2), as shown in Fig. 6, an electric signal transmission member is electrically connected to an electric signal transmission member having a copper foil pattern plated with solder on both sides using an electric wire. and the combination method. The use of electric wires for coupling increases the number of man-hours and the cost of parts for the electric wires.

The present invention was made to solve these problems, and its purpose is to place copper foil patterns with solder plating on at least one side facing each other, heat them with a soldering iron, and directly solder-bond them. By doing so, it is possible to eliminate the use of electric wires for connecting electrical signal transmission members.

Another object of the present invention is to provide a method for simultaneously and reliably bonding members having a plurality of electrode portions.

[Means for Solving the Problems] The present invention includes a first plate-shaped electrical signal transmission member having an electrode portion made of a plurality of copper foil patterns, and a plurality of electrodes electrically coupled to the electrical signal transmission member. 1! of the first electrical signal transmitting member, and the first electrical signal transmitting member has a through hole disposed in each of the coupling portions of the electrode portion. This is a structure of an electric signal transmission member characterized in that a pole part and an electrode part of the second electric signal transmission member are coupled to face each other.

Furthermore, in a method for electrically coupling a plurality of plate-shaped electrical signal transmission members in which at least one of the coupling parts is a copper foil pattern, at least one of the coupling parts has a plurality of electrode parts. , a through hole is provided in each of the bonding portions of the copper foil pattern, the bonding portion of the electrode portion of the other member that is bonded to the electrical signal transmission member in which the through hole is provided is opposed, and solder is applied to at least one of the bonding portions. By applying a soldering iron to the back side of the electrical signal transmission member that is plated and has the through hole, and heating the other opposing electrode part, the joint part of the two electrical signal transmission members can be electrically connected at the same time. This is a method for coupling electrical signal transmission members, characterized in that the electrical signal transmission members are coupled to each other.

[Function] According to the above configuration of the present invention, due to the effect of having a through hole in the copper foil pattern of the electrical signal transmission member, the solder-plated #R foil pattern is made to face each other, and the soldering iron is applied from the back side of the member. By contacting and heating the electrical signal transmission member, heat is easily transferred from the through hole to the electrode part made of a solder-plated copper foil pattern, and the electrodes of the electrical signal transmission member can be directly soldered together without damaging the electrical signal transmission member. This makes it possible to eliminate the use of electric wires for soldering.

[Example] An example of the present invention is shown in FIGS. 1, 2, 3, and 4.
This will be explained using figures.

FIG. 1 is a plan view showing the shape of a first electrical signal transmission member having a through hole in an electrode portion made of a solder-plated copper foil pattern. FIG. 2 is a plan view showing the shape of a second electrical signal transmission member having a similar copper foil pattern soldered to the first electrical signal transmission member. FIG. 3 is a plan view showing the completed state in which the two electrical signal transmission members are directly soldered together. FIG. 4 is a sectional view showing a method of directly soldering the electrical signal transmission member.

1 in FIG. 1 is a first electrical signal transmission member 1, and -a is based on a plate material made of epoxy resin or the like. The thickness is generally t=0.6 mm or more. lla,
llb, llc, lid, 11e have electrode parts made of solder-plated copper foil patterns, and 12a, 1
Reference numerals 2b, 12c, 12d, and 12e indicate through-holes in the solder-plated copper foil pattern, respectively.

In the electrical signal transmission member 2 shown in FIG. 2, 21a, 21b
, 21c, 21d, and 21e are electrode portions made of copper foil patterns plated with solder or tin, or simply coated with flux.

Solder plating may be applied to at least one of the first and second electrical signal transmission members.

FIG. 3 shows coupling parts 21a, 21b...2 which are electrode parts.
1e, and electrode parts 11a, llb, which have through holes 12a etc. in the joint part and are made of solder-plated copper foil patterns for soldering to the member.
... is a plan view of the completed state in which the electrode portions of the electrical signal transmission member 1 having lle are opposed and connected by solder.

FIG. 4 is a cross-sectional view showing a soldering method.

4 is a tip of the soldering iron for heating, and 4a is a protrusion added to the tip of the soldering iron, which is made of a copper foil pattern! The pole part 21a and the electrode part 11a, which is made of a solder-plated copper foil pattern and is solder-bonded to the member, are placed in close contact with each other, and are inserted into the through-hole 12a of the solder-plated electrode part 11a of the electrical signal transmission member 1. By inserting the protruding part 4a of the soldering iron 4 and heating it, both of the opposing electrode parts 11
Heat is easily transmitted to a and 21a, melting the solder plating applied to at least one of them, allowing direct solder connection of the electrical signal transmission member, and making it possible to eliminate electric wires for solder connection.

This means that the electrode parts 11b to lle and the electrode part 21b
This also applies to 21e to 21e, and by changing the shape of the soldering iron 4 and installing protrusions corresponding to the number of joint parts, soldering can be performed at several locations at the same time.

FIG. 5 is a schematic view showing another embodiment of the method of joining electrical signal transmission members according to the present invention, and 41 is a soldering iron having a flat tip such as - to cover all the joining parts. This is the Tesaki part. An arrow 51 indicates radiant heat emitted from the soldering iron, indicating that the heat of the soldering iron can pass through the through hole from the tip of the soldering iron and directly heat the electrode portion.

It should be noted that if a so-called through-hole is used in which a copper foil pattern is arranged for the through-hole, the heat transfer effect will be even better, and a reliable connection can be expected.

In addition, although this embodiment has been described as an example of a flat electrical signal transmission member, the shape is not limited to this, and even if it is a curved surface, it may be shaped so that the soldering iron can follow it, and various shapes can be used. Many applications are possible.

[Effects of the Invention] As described above, according to the present invention, solder plating, tin plating, or flux coating is applied.
An electrical signal transmission member 2 having a copper foil pattern, a structure of an electrical signal transmission member 1 having a solder-plated copper foil pattern that is soldered to the member and has a through hole in the joint part, and an electrical signal transmission member Electrical signal transmission member 1.2 is produced by the method of facing the copper foil patterns of 1.2 and heating and bonding after adhering them to each other.
This has the effect that direct solder connection is possible, and electric wires for solder connection can be eliminated.

The through-holes allow boards to be directly soldered together even in relatively thick epoxy printed circuit boards, contributing to improved mass productivity.

Further, since it becomes possible to directly solder-bond the electrical signal transmission member 1.2, the number of parts and the number of solder-bonding work steps can be reduced, and production costs can be reduced.

Incidentally, it goes without saying that the process of making a through hole in the electrode portion can be easily performed in the manufacturing process of the electrical signal transmission member.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the shape of the first electrical signal transmission member of the present invention. FIG. 2 is a plan view showing the shape of the second electrical signal transmission member of the present invention. FIG. 3 is a plan view showing a completed state in which the first and second electrical signal transmission members of the present invention are directly soldered together. FIG. 4 is a sectional view showing a method of directly soldering electrical signal transmission members to each other. FIG. 5 is a schematic diagram showing another embodiment of the method for coupling electrical signal transmission members according to the present invention. FIG. 6 is a schematic diagram showing a state of connection in a conventional electrical signal transmission member having a solder-plated copper foil pattern. 1-------First electric signal transmission member 2--
------Second electrical signal transmission members 11a to 11
e---One electrode part 12a to 12e---Through hole 21a to 21 e---One electrode part 4.41---One part beyond the tip of the soldering iron for heating
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Claims (1)

[Scope of Claims] 1) A first electric signal transmission member having an electrode portion made of a plurality of copper foil patterns, and a second electric signal transmission member having a plurality of electrode portions electrically coupled to the electric signal transmission member. an electrical signal transmission member, and the first electrical signal transmission member has a through hole arranged in each of the electrode parts made of the copper foil pattern, and the first electrical signal transmission member
A structure of an electrical signal transmission member, characterized in that the copper foil pattern of the electrical signal transmission member and the electrode portion of the second electrical signal transmission member are coupled to face each other. 2) In a method for electrically coupling a plurality of plate-shaped electrical signal transmission members in which at least one of the coupling parts is a copper foil pattern, at least one of the coupling parts has a plurality of electrode parts. , a through hole is provided in each of the bonding portions of the copper foil pattern, the bonding portion of the electrode portion of the other member that is bonded to the electrical signal transmission member in which the through hole is provided is opposed, and solder is applied to at least one of the bonding portions. A soldering iron is brought into contact with the back side of the electrical signal transmission member that is plated and has the through hole, and the opposing electrode parts are heated to electrically connect the joint parts of the two electrical signal transmission members at the same time. A method for joining electrical signal transmission members, characterized in that: 3) The method of joining electrical signal transmission members according to claim 2, wherein the plate-shaped electrical signal transmission member has a thickness of 0.6 mm or more, and the copper foil pattern is plated with solder. 4) In a method for electrically coupling a plurality of plate-shaped electrical signal transmission members in which at least one of the coupling parts is a copper foil pattern, at least one of the coupling parts has a plurality of electrode parts. , a through hole is provided in each of the bonding portions of the copper foil pattern, the bonding portion of the electrode portion of the other member that is bonded to the electrical signal transmission member in which the through hole is provided is opposed, and solder is applied to at least one of the bonding portions. plating, installing at least one protrusion that can be inserted into the through hole at the tip of the soldering iron, and directly heating the opposing electrode part from the back side of the electrical signal transmission member, so that the two electrical signal transmission members A method for joining electrical signal transmission members, the method comprising electrically joining the joint portions of the parts.