JPH11238415A - Insulated electric wire with junction member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lessen the height and size of a connection part where each insulated electric wire and a printed board are connected together through connector members. SOLUTION: The invention is configured from a plastic film 2, a junction member consisting of a plurality of thin and long metal foils 1a affixed onto the film parallel at fixed intervals, and a plurality of insulated electric wires 4 formed by covering conductors, wherein at one end of the junction member 3 about the longitudinal direction of the foils 1, the foils 1 and the film 2 are cut in alignment at a right angle to the longitudinal direction of the foils 1, and the terminations of the exposed conductors 5 of these electric wires 4 are connected fast to the metal foils 1 at the other end of the junction member 3 by means of soldering 6, caulking, pressure contacting, etc., wherein each electric wire 4 is equipped with junction member extending in the direction of separating from the junction member 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulated wire with a relay member, which can reduce the connection between the insulated wire and a printed circuit board.

[0002]

2. Description of the Related Art In general, a connector such as a crimp connector or a press-fit connector is used to connect a printed circuit board to an insulated wire having a circular cross section in which a conductor made of a single wire or a stranded wire is coated with a vinyl chloride resin or the like. Connected. FIG. 8 shows an example of the press-connecting connector.

FIG. 8A is a perspective view of a connection portion,
FIG. 8B is a sectional view taken along the line ZZ '. First, the plurality of insulated wires 32 are pushed into the grooves of the contacts 33a of the press-connecting connector 33 with the coating applied in the direction perpendicular to the axis of the insulated wires, thereby breaking the coating by the grooves of the contacts 33a and the conductors of the insulated wires 32. Conduction with the contact 33a is performed. Then, by inserting the press-connecting connector 33 into the adapter 34 connected to the printed circuit board 35,
Conduction between the conductor of the insulated wire 32 and the conductor formed on the printed board 35, that is, connection between the insulated wire and the printed board is performed.

A crimping connector is slightly different from a crimping connector in that an end of an insulated wire is stripped off and a contact is crimped thereon, but the connection with a printed board is made by an adapter connected to the printed board. It is no different from the case of the press-connecting connector in that the crimping connector is inserted into the connector.

[0005] In the case of these crimping connectors or press-connecting connectors, the insulated wire rises perpendicularly to the surface of the printed circuit board, so that the space required for connection is large. It is also possible to mount the adapter sideways so that the terminals are oriented parallel to the printed circuit board. However, even in such a case, the contacts used for the crimping connector or the crimping connector are large enough to sandwich the conductor of the insulated wire one by one. In the case where an insulated wire having a conductor size of AWG 26 to 36 is used, the height of the crimping connector or the press-connecting connector from the printed circuit board is as large as about 3.7 mm. Also, the arrangement pitch of the contacts is 1.
It is as large as 5 mm or more.

[0006]

When an insulated wire is connected to a printed circuit board using a crimping connector or a press-connecting connector, the conductor of the insulated wire becomes one.
Since the contacts are sandwiched one by one, the contacts themselves become large, and the arrangement pitch of the contacts is also 1.5.
mm or more, and the crimping connector or the press-connecting connector becomes large. Therefore, the height of the connection portion with respect to the surface of the printed circuit board is increased, and the width is increased, so that the connection portion is bulky. SUMMARY OF THE INVENTION The present invention provides an insulated wire with a relay member used to reduce the connection between the insulated wire and a printed circuit board.

[0007]

According to the present invention, there is provided an insulated wire with a relay member according to the present invention, which comprises a relay member comprising a plastic film and a plurality of elongated metal foils attached in parallel at a constant pitch on the plastic film, and a covering on the conductor. A plurality of insulated wires having a plurality of insulated wires, and at one end with respect to the longitudinal direction of the metal foil of the relay member, the plurality of metal foils and the plastic film are cut at right angles to the longitudinal direction of the metal foil. The ends of the exposed conductors of the insulated wires are connected and fixed to the other end of the metal foil, respectively, and the insulated wires extend in a direction away from the relay member.

In addition, a plurality of elongated metal foils to be attached to the plastic film of the relay member are provided with a constant pitch which is parallel at both ends and different at one end and the other end, and has a pitch conversion portion at an intermediate portion. By connecting an insulated wire to one end of the relay member, the arrangement pitch between the insulated wire side and the connector side can be changed.

The metal foil of the relay member and the conductor of the insulated wire are connected and fixed by soldering, or a conductor caulking protrusion is provided on the metal foil, and the conductor caulking protrusion is insulated. The connection between the metal foil and the conductor is fixed by caulking on the conductor exposed at the end of the electric wire. In addition, it is also possible to fix the press-contact member to the metal foil and press the insulated wire into the groove of the press-contact member in a direction perpendicular to the axis, thereby breaking the coating of the insulated wire by the press-contact member and fixing the connection with the conductor. .

[0010] In addition, at the end opposite to the end where the plastic film and the metal foil are cut and aligned, an adhesive margin where the metal foil is not attached to the plastic film is provided.
The conductor at the end of the insulated wire is connected and fixed to the metal foil by soldering, and the coating of the insulated wire is bonded and fixed to the margin of plastic with an adhesive so that stress at the conductor connection is not concentrated. Thus, the fixing between the relay member and the insulated wire can be further strengthened.

[0011] Further, by providing a caulking protruding portion protruding from the plastic surface on the metal foil and caulking the covering caulking protruding portion on the insulated wire coating,
It is also possible to increase the fixing strength between the insulated wire and the relay member.

Further, a caulking protrusion for the base projecting in the opposite direction to the caulking protrusion for covering is provided on the metal foil, and the caulking protrusion for the base is attached to the metal foil of the plastic film through a hole provided in the plastic film. By crimping on the back side of the attached surface, it is possible to increase the bonding strength between the plastic film and the metal foil.

In the insulated electric wire with the relay member having the above-described structure, the terminal is made of the relay member, and the foil-shaped conductor is formed at a constant pitch along the edge of the plastic film in the same manner as the edge of the printed circuit. Since it is formed on the surface of the plastic film, the printed circuit connector used to insert and connect the end of the printed circuit can be used as it is for connection with the relay member.

Further, when a polyester film or a polyimide film is used as a plastic film, and a tin-plated soft copper foil is used as a metal foil, and the tin-plated soft copper foil is thermocompression-bonded to the polyester film or the polyimide film via an adhesive, an insulated wire is obtained. It is easy to connect to the conductor by soldering, and even if the relay member is repeatedly inserted into and removed from the printed circuit connector, the metal foil and the plastic film do not peel off, and long-term reliability can be maintained.

Further, a polyester film or a polyimide film is used as the plastic film, and a tin-plated brass foil having a conductor caulking protrusion or a press-contact member is used as the metal foil, and the tin-plated brass foil is bonded to the polyester film or the polyimide film with an adhesive. If the thermocompression bonding is used, the connection of the insulated wire to the conductor by crimping or press contact is easy, and even if the relay member is repeatedly inserted and removed from the printed circuit connector, the metal foil and the plastic film do not peel off, and the Reliability can be maintained.

[0016]

FIG. 1 is a view showing an embodiment of an insulated wire with a relay member according to the present invention. FIG. 1 (A) is a perspective view thereof, and FIG. 1 (B) is a side view thereof. In FIG.
The relay member 3 is formed by arranging a plurality of thin metal foils 1 such as tin-plated soft copper foils on a plastic film 2 such as a polyester film in parallel at a constant pitch and bonding them by thermocompression bonding via an adhesive. It is.

At both ends 3a and 3b, the metal foil 1 and the plastic film 2 are cut at right angles to the longitudinal direction of the metal foil 1, and one of the ends 3b is used to cover the terminal. The conductor portion of the terminal portion of the insulated wire 4 from which the conductor 5 is removed by exposure is superimposed on the metal foil 1, and the conductor 5 and the metal foil 1 are connected and fixed by soldering 6. Since the insulated wire is connected to the metal foil at the end, the insulated wire 4 extends in a direction away from the relay member 3 as a matter of course.

As an insulated wire, a conductor made of a single wire or a stranded wire of a tin-plated soft copper wire coated with a vinyl chloride resin or the like is used. It is also possible to use those plated with silver.

FIG. 2 is a view showing another embodiment of the insulated wire with a relay member of the present invention. FIG. 2 (A) is a perspective view of the relay member, and FIG. 2 (B) is an insulated wire with the relay member. FIG. 2C is a side view of FIG. In FIG. 2, a relay member 9 has a plurality of elongated metal foils 7 such as tin-plated soft copper foils arranged in parallel on a plastic film 8 such as a polyester film or a polyimide film, and is attached by thermocompression bonding via an adhesive. It was done.

At one end 9a, the metal foil 7 and the plastic film 8 are cut at right angles to the longitudinal direction of the metal foil, and at the other end 9b, the plastic film 8 is A conductor portion of the insulated wire 10 in which an adhesive margin portion 9c longer than the foil 7 and having no metal foil is provided, and a terminal coating is removed on the end 7b of the metal foil 7 to expose the conductor 11. The conductor 11 and the metal foil 7 are connected and fixed by soldering 12, and the coating 10 a of the insulated wire 10 is bonded and fixed to the bonding margin 9 c of the plastic film 8 with an adhesive 13. The long portion of the insulated wire 10 having the coating is connected to the relay member 9.
And extend in the direction away.

FIGS. 3A and 3B are perspective views showing another embodiment of the insulated wire with a relay member according to the present invention, in which the arrangement pitch of the metal foil of the relay member is changed between the insulated wire side and the connector side. It is a thing. In the relay member 16 shown in FIG. 3A, the metal foil 15 adhered to the plastic film 14 is used.
The arrangement pitch of the insulated wire side part 15c is made larger than the arrangement pitch of the connector side part 15a, and the pitch conversion unit 1 between the insulated wire side part 15c and the connector side part 15a.
5b.

In the relay member 19 shown in FIG. 3B, a metal foil 18 adhered to a plastic film 17 is used.
The arrangement pitch of the insulated wire portions 18c is made smaller than the arrangement pitch of the connector-side portions 18a.
8c and the connector side portion 18a.
It is connected by b. In addition, the plastic film of the relay members 16 and 19, the material of the metal foil, and the method of attaching are shown in FIG.
It is not different from the case of FIG.

FIG. 4 is a view showing another embodiment of the insulated wire with a relay member according to the present invention. FIG. 4 (A) shows a case where a metal foil 21 such as a tin-plated brass foil is used as a plastic such as a polyester film or a polyimide film. FIG. 4 is a perspective view of a relay member attached to a film 22. In FIG. 4A, the metal foil 21
Although only one is shown, a plurality of the same ones are arranged in parallel and attached by thermocompression bonding via an adhesive.

FIG. 4B is a side view, a cross-sectional enlarged view taken along line XX ', and an enlarged cross-sectional view taken along line YY' showing the relay member attached to the insulated wire. The metal foil 21 is provided with a caulking protrusion 21a for the conductor and a caulking protrusion 21b for the covering.
Caulking on the conductor 23a of the
b is swaged on the coating 23b of the insulated wire 23. Note that the conductor 21a is shown in the enlarged cross-sectional view taken along the line XX ', where the stranded wire is collapsed by crimping and pressed. Also Y
The -Y 'cross-sectional enlarged view shows a state where the covering 23b of the insulated wire 23 is caulked by the covering caulking protrusion 21.

FIG. 5 is a view showing another embodiment of the insulated wire with a relay member according to the present invention. FIG. 5 (A) shows a case where a metal foil 24 such as a tin-plated brass foil is formed of a plastic such as a polyester film or a polyimide film. FIG. 5B is a side view showing a state where the relay member is connected to an insulated wire. Pressing members 24a and 24b are fixed to the metal foil 24 in this case,
Further, it has a caulking protrusion 24c for coating.

The insulated wire, with the sheath attached, is pushed into the groove of the crimping member in the direction perpendicular to the axis in the direction perpendicular to the axis, thereby breaking the sheath by the crimping member and connecting and fixing the conductor of the insulated wire and the crimping member. The pressing members 24a, 24
b is manufactured separately from the other parts of the metal foil 24 and fixed by welding or the like, or is punched integrally from a flat plate, and raised and bent the press contact members 24a and 24b and the cover caulking protrusion 24c. Can also be produced.

Although the example of FIG. 5 shows an example in which the pressure contact member is fixed at two places, it can be used at one place. It goes without saying that as the number increases, the reliability of connection with the conductor improves. The caulking protrusion 24c is used to fix the coating of the insulated wire in the same manner as in the case of FIG.

FIG. 6 is a view showing another embodiment of the insulated wire with a relay member according to the present invention. FIG. 6 (A) shows a case where a metal foil 27 such as a tin-plated brass foil is made of a plastic such as a polyester film or a polyimide film. FIG. 6B is a perspective view of the relay member attached to the film 28, FIG. 6B is a plan view of a plastic film used for the relay member, and FIG. 6C is a developed view of a metal foil.

As shown in FIG. 5, the metal foil 27 has pressure contact members 27a and 27b and a caulking protrusion 27c.
6A, but the metal foil of the relay member of FIG. 6A further includes a base caulking protrusion 27. The projecting portion of the base caulking is opposite to the projecting portion of the caulking projecting portion for coating, and the hole 28a formed in the plastic film 28 is provided.
And then caulked on the back side of the surface where the metal foil of the plastic film is attached.

Incidentally, reference numeral 28b in FIG. 6B indicates a place where a metal foil is to be attached. As shown in FIG. 6 (C), the press contact members 27a and 27b of the metal foil 27 are punched out of a metal flat plate integrally with the other portions, and the press contact members 27a and 27b are pressed.
b, press-contact member fixing portion 27e, cover caulking protrusion 27c,
The base caulking protruding portions 27d can be raised at right angles and used as metal foil. Alternatively, a method in which the pressure contact member is manufactured separately from other members and fixed by welding or the like is used.
It is possible to manufacture the metal foil 27 of the type (A).

In the insulated wires with the relay member shown in FIGS. 4 to 6, the arrangement pitches on the insulated wire side and the connector side are the same, but in the middle of the metal foils 21, 24, 27. It is also possible to provide a pitch converter so that the insulated wire side and the connector side have different arrangement pitches.

In any case, the insulated electric wire with the relay member configured as described above is connected to the connector fixedly connected to the printed circuit board as shown in FIG. In FIG.
Reference numeral 30 denotes a printed circuit board, and 31 denotes a printed circuit connector having a connection terminal 31a. The formed circuit and the connection terminal 31a of the printed circuit connector 31 are connected to the circuit of the printed circuit board 30 by a circuit (not shown). .

The connection terminal 31a is generally used for connection with a conductor circuit formed at the end of the printed circuit. The connection terminal 31a is used to connect the end of the printed circuit obtained by molding the conductor circuit to a printed circuit connector. By inserting the printed circuit, the printed circuit is sandwiched together with the conductor circuit from above and below to perform connection. Therefore, the connection terminals can be small and the arrangement pitch can be reduced.

In the insulated wire with a relay member according to the present invention, the relay member attached to the terminal portion of the insulated wire also has a foil-like conductor cut along the edge of the plastic film like the end of the printed circuit. Since they are aligned and formed on the surface of the plastic film at a constant pitch,
The printed circuit connector used to insert and connect the end of the printed circuit can be used as it is for connection with the relay member.

[0035]

EXAMPLE As an example, six polyester films having a thickness of about 30 .mu.m and a polyester-based hot melt adhesive applied to a polyester film having a thickness of 0.188 mm were prepared. Ten foils of each kind were stuck in parallel by thermocompression bonding, and one end of the metal foil and the polyester film were cut and aligned to obtain a relay member. The other end is Example 1.
And 2 only. The metal foil was tin-plated with the materials shown in Table 1, and the thickness was 0.05 mm for tin-plated soft copper foil and 0.12 mm for tin-plated brass foil.
Was used. In the case of Example 6, the base caulking protrusion was passed through a hole in the polyester film and caulked on the back side.

On the other hand, the conductor size AWG3 is used as an insulated wire.
6 and AWG26 are coated with a tin-plated soft copper stranded wire made of vinyl chloride resin and have an outer diameter of 0.5 mm and 0.98 mm.
In Examples 1-4, the conductor was exposed by removing the coating of the terminal. The insulated wires prepared in this manner were connected and fixed to the metal foil of each relay member by the method shown in each figure, that is, by soldering, caulking, or pressure welding. Also, the coating was fixed by bonding or caulking if the fixing method was specified.

[0037]

[Table 1]

In another embodiment, the thickness is 0.188.
3 mm thick polyester film or polyimide film coated with a polyester hot melt adhesive to a thickness of about 30 μm is prepared, and a metal foil having three types of pitch converters shown in Table 2 is thermocompressed thereon. Then, 10 pieces were adhered in parallel to each other, and both ends of the metal foil and the polyester film or the polyimide film were trimmed to form a relay member. The metal foil used was a tin-plated soft copper foil having a thickness of 0.05 mm. In addition, each conductor of the insulated wire was connected and fixed to the metal foil of each relay member by soldering.

[0039]

[Table 2]

The terminal portions of the relay members of the nine types of insulated wires with the relay members manufactured as described above were connected and fixed on a printed circuit board by a printed circuit connector (pitch: 1.25 mm) of Japan Crimp Terminal Co., Ltd. For: FFS connector, pitch 0.5 mm For: FL connector, pitch 1.0 mm
(For FMS connector), it was connected without any problem.

The height from the printed circuit board is 2.0 to
It was confirmed that the diameter was 2.8 mm, which was smaller than that in the case of using the conventional crimping connector and press-connecting connector. In addition, the pitch of the insulated wires was 0.5 to 1.25 mm, and the size was reduced. In the case of thermocompression bonding, the peel strength between the polyester film or the polyimide film and the metal foil was about 0.1 kg, but the peel strength of the base caulking protrusion of Example 6 caulked on the back surface of the polyester film was It was confirmed that it was firmly fixed at about 0.3 kg.

[0042]

According to the present invention, there is provided an insulated wire with a relay member according to the present invention, in which a relay member in which a plurality of thin and long metal foils are adhered in parallel at a constant pitch to a plastic film at a terminal portion of the insulated wire is provided. Since the foil is fixed by soldering, using the printed circuit connector that is used when inserting and connecting the end of the printed circuit, insert the end of the relay member into the connection terminal and connect it to the insulated wire. A printed circuit can be connected, and the connection can be reduced in size.

Also, as the relay member, if the arrangement pitch of the metal foils is different between one end and the other end and a pitch conversion part is provided in the middle, the insulated wire side and the connector side can be used. Thus, insulated wires with a relay member having different arrangement pitches can be formed, so that even if the insulated wires are thick, connection to a printed circuit connector having a small pitch can be made possible.

Also, the conductor of the insulated wire and the metal foil are connected and fixed by soldering using a relay member having a plastic film longer than the metal foil as a relay member and having a margin for bonding. If the insulation of the insulated wire and the margin of the plastic film are fixed with an adhesive,
Concentration of stress at the boundary between the exposed portion of the conductor of the insulated wire and the coating can be avoided, and the insulated wire and the relay member can be more firmly connected.

Also, a conductor caulking protrusion or a covering caulking protrusion is provided on the metal foil used for the relay member, and the insulated wire which is caulked on the exposed conductor and the covering is also connected and fixed between the insulated wire and the relay member. It is effective in ensuring

In the case where the pressure contact member made of metal foil is attached, the connection and fixation can be performed only by pushing the insulation wire into the pressure contact member without exposing the conductor at the end of the insulated wire.
The connection work between the relay member and the insulated wire is facilitated. Further, when the metal foil is provided with a caulking protrusion for the base, passed through the hole of the plastic film and caulked on the back surface, the metal foil can be more firmly fixed to the plastic film than when only thermocompression bonding is performed.

If a tin-plated soft copper foil or a tin-plated brass foil is used as the metal foil and a polyester film or a polyimide film is used as the plastic film, and the metal foil is bonded to the plastic film by hot pressing using a hot melt adhesive, The metal foil does not peel off from the plastic film even after repeated insertion and removal from the printed circuit connector.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of an insulated wire with a relay member of the present invention, wherein (A) is a perspective view and (B) is a side view.

2A is a perspective view showing another embodiment of the relay member of the present invention, and FIGS. 2B and 2C are a perspective view and a side view of an insulated wire with the relay member using the relay member. is there.

FIGS. 3A and 3B are perspective views showing another embodiment of the relay member according to the present invention.

FIG. 4 (A) is a perspective view showing another embodiment of the relay member of the present invention, and FIG. 4 (B) is a side view of an insulated wire with a relay member using the relay member and an enlarged cross-section XX ′. Figure and Y-
It is a Y 'cross section enlarged view.

FIG. 5A is a perspective view showing another embodiment of the relay member of the present invention, and FIG. 5B is a side view of an insulated wire with the relay member using the relay member.

6A is a perspective view showing another embodiment of the relay member according to the present invention, FIG. 6B is a plan view of a plastic film used for the relay member, and FIG. 6C is a developed view of a metal foil.

FIG. 7 is a side view illustrating the connection between the insulated wire with the relay member and the printed circuit connector.

FIG. 8A is a perspective view showing a connection between an insulated wire and a printed circuit using a press-connecting connector according to the related art, and FIG. 8B is a sectional view taken along the line ZZ '.

[Explanation of symbols]

1, 7, 15, 18, 21, 24, 27: metal foil 2, 8, 14, 17, 22, 25, 28: plastic film 3, 9, 16, 19: relay member 3a, 3b: edge (printed) 4, 10, 23, 26: insulated wire 5, 11, 23a: conductor 6, 12: soldering 9a, 9b: end (insulated wire connection side) 9c: adhesive margin 10a, 23b: Coating 13: Adhesive 15a, 18a: Connector side portion of metal foil 15b, 18b: Pitch conversion portion of metal foil 15c, 18c: Insulated wire side portion of metal foil 21a: Conductor caulking protrusion 21b, 24c, 27c: Coating caulking Projection 27d: Base caulking Projection 28a: Hole

Claims (9)

[Claims] 1. A relay member comprising a plastic film and a plurality of elongated metal foils attached in parallel at a constant pitch on the plastic film, and a plurality of insulated wires having a coating on a conductor. In an insulated wire, at one end with respect to the longitudinal direction of the metal foil of the relay member, a plurality of the metal foils and the plastic film are cut at right angles to the longitudinal direction of the metal foil, and the relay member The conductor at the terminal portion of the insulated wire is connected and fixed to the metal foil at the other end of the insulated wire. 2. An insulated wire with a relay member comprising a relay member made of a plastic film and a plurality of elongated metal foils stuck thereon, and a plurality of insulated wires having a coating on a conductor. The plurality of metal foils of the relay member are arranged in parallel at both ends and at different constant pitches at one end and the other end, and have a pitch conversion portion at an intermediate portion, At one end with respect to the longitudinal direction of the metal foil of the member, the plurality of metal foils and the plastic film are cut at right angles to the longitudinal direction of the metal foil, and at the other end of the relay member, An insulated wire with a relay member, wherein a conductor at a terminal portion of the insulated wire is connected and fixed to each of the foils. 3. The plastic film of the relay member has an adhesive margin that is longer than the length of the metal foil and is not provided with the metal foil at an end opposite to the end of the relay member cut and aligned with the metal foil. The conductor at the terminal portion of the insulated wire is fixed to the metal foil by soldering, and the covering of the insulated wire is bonded and fixed to the margin of the plastic film with an adhesive. The insulated wire with a relay member according to claim 1 or 2. 4. The plastic film is a polyester film or a polyimide film, the metal foil is a tin-plated soft copper foil, and the tin-plated soft copper foil is stuck to the polyester film or the polyimide film by thermocompression bonding. The insulated wire with a relay member according to any one of claims 1 to 3, wherein 5. The metal foil of the relay member has a conductor caulking protrusion protruding from a plastic film surface, and the conductor caulking protrusion is caulked on an exposed conductor of an insulated wire to form a conductor. The insulated wire with a relay member according to claim 1, wherein the connection is fixed. 6. A conductor pressure contact member is fixed to the metal foil of the relay member, and the insulated wire is covered with the pressure contact member by pushing the insulated wire into the groove of the conductor pressure contact member in a direction perpendicular to the axis. The insulated wire with a relay member according to claim 1 or 2, wherein the insulated wire is connected to the conductor by pressure welding. 7. The metal foil of the relay member has a caulking protrusion projecting from a plastic film surface, and the caulking protrusion is swaged on the insulated wire coating to form a connection with the insulated wire. The insulated wire with a relay member according to claim 5, wherein the insulated wire is joined to a member. 8. The plastic film is a polyester film or a polyimide film, the metal foil and the press-contact member are tin-plated brass foils, and the tin-plated brass foil is bonded to the polyester film or the polyimide film by thermocompression bonding. The insulated wire with a relay member according to claim 5, wherein the wire is attached. 9. The metal foil of the relay member has a caulking protrusion for the base material, and the surface to which the metal foil is adhered by passing the caulking protrusion for the base material through a hole provided in the plastic film of the relay member. 3. The insulated wire with a relay member according to claim 1, wherein the joining force between the plastic film and the metal foil is increased by caulking on a surface on the opposite side of the wire.