JP6752045B2 - Shield terminal connection method and shielded wire terminal structure - Google Patents

Description

The present invention relates to a method of connecting shield terminals and a terminal structure of shielded electric wires.

In general, coaxial cables and shielded electric wires are covered with a braid (metal braided wire) or metal foil on the outside of a core wire coated with an insulating inner skin (insulator) in order to block electrical noise such as electromagnetic waves and static electricity. It has a structure in which the outside thereof is covered with an insulating sheath (sheath material).

Then, in order to connect such a coaxial cable to the device or connector on the other side, a shield terminal for the coaxial cable is used. For example, in the coaxial cable shield terminal 501 of Patent Document 1 shown in FIG. 6, the crimping portion 503 stands up from both side edges of the terminal bottom plate portion 505 extending rearward along the axis of the terminal body 502. The crimping portion 503 has a pair of braided caulking portions 511 for crimping and connecting the coaxial cable shield terminal 501 to the coaxial cable 507 by caulking the braided portion 509 of the coaxial cable 507, and a position behind the braided caulking portion 511. Between the pair of sheath caulking portions 517 for crimping and connecting the coaxial cable shield terminal 501 to the coaxial cable 507 by caulking the insulating sheath 510 of the coaxial cable 507, and the tip portion of the braided caulking portion 511. A connection piece 515 whose tip is inserted between the insulating inner skin 513 of the coaxial cable 507 and the braid 509 from the end side of the coaxial cable 507 so as to sandwich the braided 509 of the coaxial cable 507 is provided. According to the coaxial cable shield terminal 501, the braided caulking portion 511 presses and urges the braided portion 509 of the coaxial cable 507 toward the connecting piece 515, so that the connecting piece 515 and the inner peripheral surface of the braided 509 are in close contact with each other. The property is improved, and the occurrence of poor connection between the braided 509 of the coaxial cable 507 and the shield terminal 501 for the coaxial cable can be suppressed.

Further, the shielded wire (shielded wire) 519 of Patent Document 2 shown in FIG. 7 is a three-core electric wire in which the insulating coating film of the enamel wire is partially peeled off and used as a drain wire 521, and the core wire is coated with an insulating coating layer. A state in which 523 and one drain wire 521 are bundled is covered with a shield layer 527 made of a metal foil tape 525, and a single core wire of the drain wire 521 is brought into contact with the shield layer 527 for assembly. According to this shield wire 519, water intrusion from the drain wire 521 of the shield wire 519 can be prevented.

Japanese Unexamined Patent Publication No. 2005-93173 Japanese Unexamined Patent Publication No. 2012-1138885

However, since the shield terminal 501 for the coaxial cable of Patent Document 1 is connected to the shield terminal by peeling the insulating sheath 510 of the coaxial cable 507, there is a large amount of residue (material loss) when the shield terminal 501 is peeled.
Further, in the shielded wire 519 of Patent Document 2, three core electric wires 523 and a drain wire 521 are bundled, and an adhesive tape is wound around a winding start end and a winding end end in a state where a metal foil tape 525 is wound and wound. The metal foil tape 525, which maintains the state but has poor adhesion (friction) to the insulating coating layer of the core electric wire 523, may be misaligned and adversely affect the transmission characteristics.

By the way, if there is a PVC specification general wire or other PVC member around the coaxial cable 507, a plasticizer (bis phthalate) added to make PVC (polyvinyl chloride) flexible at high temperatures. , Trimellitic acid, etc.) volatilizes, passes through the braid 509, and shifts to the insulating inner skin 513 of the core wire of the coaxial cable 507. As a result, the insulating endothelium 513 made of an insulator such as polyethylene may deteriorate in electrical properties due to the intrusion of a plasticizer. The transmission characteristics of the coaxial cable 507 may deteriorate due to such a cause.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for connecting shield terminals and a terminal structure for shielded electric wires, which suppress deterioration of transmission characteristics and have less material loss.

The above object according to the present invention is achieved by the following configuration.
(1) An inner terminal connection step of connecting an inner terminal to a conductor exposed by removing an insulator at the end of an insulated wire, and a long electromagnetic shield sheet in which a metal sheet layer and an insulating film layer are integrated. A sheet folding step of folding the longitudinal end portions of the above so that the insulating film layers face each other to form a folded portion, and the electromagnetic shield vertically attached to the insulating electric wire so that the metal sheet layer is on the inside. With the folded portion arranged so that the end portion of the insulator is exposed to a predetermined length by the sheet, the edges extending in the extending direction of the insulated wire are overlapped and wound around the insulated wire. The sheet winding step of wrapping the circumference of the insulated wire, the sheath winding step of winding the tape-shaped or sheet-shaped sheath material on the insulating film layer covering the circumference of the insulated wire, and the inner terminal. A method of connecting a shield terminal, which comprises an outer terminal connecting step of crimping a tubular outer terminal to be crimped to the folded-back portion.

According to the shield terminal connection method described in (1) above, the insulated wire is covered with a vertically attached long electromagnetic shield sheet. As a result, the insulated wire does not deteriorate in transmission characteristics due to misalignment as in the case where the metal foil tape is directly wrapped. Further, since the electromagnetic shield sheet and the sheath material are wound around the insulated wire, the material loss is small because the residue does not occur as when the sheath material is peeled off. Further, since the sheath material is wound on the insulating film layer of the electromagnetic shield sheet, the sheath material is less likely to be displaced as compared with the case where the sheath material is directly wound on a braid or a metal foil. Further, since the outer terminal is crimped to the folded portion of the electromagnetic shield sheet in which the metal sheet layer is exposed on the outer peripheral portion, it can be easily electrically connected to the electromagnetic shield sheet. The folded portion, which is thickened by folding the electromagnetic shield sheet, increases the repulsive force from the electromagnetic shield sheet during crimping, and enables easy and reliable crimping.

(2) The method for connecting shield terminals according to (1) above, wherein the insulating film layer is made of a resin film having an SP value significantly different from the SP value of the resin material in the insulator.
The SP value is called a solubility parameter, and is a numerical value of the solubility of the resin material in a solvent or the like.

According to the method of connecting the shield terminals described in (2) above, a resin film (for example, polyethylene terephthalate) having a SP value significantly different from that of the resin material (for example, polyethylene) in the insulator is formed on the insulating film layer of the electromagnetic shield sheet. By being used, plasticizers (bis phthalate and trimellitic acid) of other PVC electric wires do not migrate to the insulator and deteriorate the transmission characteristics. As described above, by using a resin film (PET film) having an SP value significantly different from the SP value of the resin material (polyethylene) in the insulator as the insulating film layer of the electromagnetic shield sheet, the metal sheet layer of the electromagnetic shield sheet is used. A metal braided wire can also be used for.

(3) The insulated wire extends vertically with the inner terminal connected to the conductor exposed from the insulator at the end of the insulated wire and the metal sheet layer integrated with the insulating film layer inside. A long electromagnetic shield sheet that is wound around the insulated wire so that edges extending along the direction overlap each other and covers the periphery of the insulated wire, and the above-mentioned that covers the circumference of the insulated wire. The edge of the insulator in a state where the tape-shaped or sheet-shaped sheath material wound on the insulating film layer and the longitudinal end of the electromagnetic shield sheet are folded so that the insulating film layers face each other. A terminal structure of a shielded electric wire, which is crimped to a folded portion arranged so that the portion is exposed to a predetermined length, and includes a tubular outer terminal that covers the inner terminal.

According to the terminal structure of the shielded wire described in (3) above, the insulated wire is covered with a vertically attached long electromagnetic shield sheet. Therefore, the insulated wire does not deteriorate in transmission characteristics due to misalignment as in the case where the metal foil tape is directly wrapped. Further, since the sheath material is wound on the insulating film layer of the electromagnetic shield sheet, the sheath material is less likely to be misaligned than when the sheath material is directly wound on a braid or a metal foil. Further, since the outer terminal is crimped to the folded portion of the electromagnetic shield sheet in which the metal sheet layer is exposed on the outer peripheral portion, the outer terminal is securely electrically connected to the electromagnetic shield sheet.

According to the shield terminal connection method according to the present invention, deterioration of transmission characteristics can be suppressed and material loss can be reduced.
Further, according to the terminal structure of the shielded electric wire according to the present invention, deterioration of transmission characteristics can be suppressed.

The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments for carrying out the invention described below (hereinafter, referred to as "embodiments") with reference to the accompanying drawings. ..

(A) to (c) are procedural explanatory views of an inner terminal connecting process showing a method of connecting shield terminals according to an embodiment of the present invention. (A) is a cross-sectional view of the electromagnetic shield sheet according to the present embodiment, and (b) is a cross-sectional view of the electromagnetic shield sheet according to a modified example. (A) to (c) are procedure explanatory views of a sheet folding process and a sheet winding process. (A) to (c) are explanatory views of the sheath winding process and the outer terminal connecting process. It is a side sectional view explaining the terminal structure of the shielded electric wire manufactured by the connection method of the shield terminal which concerns on this embodiment. It is a perspective view which shows the schematic structure of the shield terminal for a conventional coaxial cable. A conventional shielded electric wire is shown, (a) is a perspective view thereof, and (b) is a sectional view taken along the line AA of (a).

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1, 3 and 4, the method of connecting the shield terminal according to the embodiment of the present invention includes an inner terminal connecting step, a sheet folding step, a sheet winding step, a sheath winding step, and an outer terminal connection. Including the process.

<Inner terminal connection process>
FIGS. 1 (a) to 1 (c) are explanatory views of an inner terminal connecting process showing a method of connecting shield terminals.
In the inner terminal connecting step of the present embodiment, as shown in FIG. 1 (a), after removing the insulator 10 at the end of the insulated wire 11 to expose the conductor 13, as shown in FIG. 1 (b). The inner terminal 15 is connected to the exposed conductor 13. The inner terminal 15 has a conductor crimping portion 19 formed behind the electrical contact portion 17 at the tip. In the inner terminal 15, the conductor crimping portion 19 is crimped to the conductor 13.
The insulated wire 11 that has completed the inner terminal connecting step is arranged along the long electromagnetic shield sheet 21 shown in FIG. 1C in the sheet folding step and the sheath winding step of the next step.

The above-mentioned insulated wire 11 is a conductor 13 made of a copper alloy or an aluminum alloy covered with an insulator 10, and polyethylene is used for the insulator 10. Here, the SP value of polyethylene is 7.7 to 8.4. Here, the SP value is called a solubility parameter, and is a numerical value of the solubility of the resin material in a solvent or the like. That is, substances having similar SP values tend to be easily mixed with each other.
On the other hand, PVC (polyvinyl chloride) is used for the sheath material 23 (see FIG. 4B), which will be described later, and the insulating sheath of a general electric wire having PVC specifications. A plasticizer (bis phthalate, trimellitic acid, etc.) is added to the polyvinyl chloride to give it flexibility. The SP values of these bisphthalates and trimellitic acids are 8.9, respectively.
Therefore, plasticizers such as bisphthalate and trimellitic acid volatilized at high temperatures are easily mixed with polyethylene having a similar SP value and easily migrate to the insulator 10.

The transmission characteristics (attenuation amount) of the insulator 10 deteriorate when the plasticizer added to the polyvinyl chloride is transferred. That is, when the plasticizer shifts to the insulator 10, the dielectric constant of the insulator 10 increases and the characteristic impedance decreases. As a result, impedance mismatch occurs. When impedance mismatch occurs, reflected waves and signals are not efficiently transmitted at the interface of the mismatch, and the amount of attenuation decreases. Therefore, in the method of connecting the shield terminal according to the present embodiment, the electromagnetic shield sheet 21 is used as a countermeasure against the transfer of the plasticizer to the insulator 10.

As shown in FIG. 2A, the electromagnetic shield sheet 21 is formed in a long shape in which the metal sheet layer 25 and the insulating film layer 27 are integrated on the front and back surfaces. The metal sheet layer 25 is made of a conductive metal foil such as an aluminum foil or a copper foil. The insulating film layer 27 is made of a PET (polyethylene terephthalate) film which is a resin film having an SP value (10.7) significantly different from the SP value (7.7 to 8.4) of polyethylene in the insulator 10.

The metal sheet layer 25 in the present embodiment is a metal foil such as an aluminum foil or a copper foil, but the “metal sheet layer” in the present invention is not limited to this, and the electromagnetic wave according to the modified example of FIG. 2 (b). A conductive metal braided wire 26 such as the shield sheet 21A can also be used. Further, as the "insulating film layer" in the present invention, various films such as PET, fluororesin, polyurethane and the like, a resin layer coated and formed on a metal sheet layer, and the like can be used.

The insulating film layer 27 of the electromagnetic shield sheet 21 is made of a resin material capable of suppressing the migration of the plasticizer (bis phthalate or trimellitic acid) of the adjacent PVC electric wire to the insulator (polyethylene) 10. To. In the resin material, in order to suppress the migration of the plasticizer, it is necessary that the SP values differ greatly from each other. This resin material has an effect of suppressing the migration of the plasticizer by making the difference in SP value from that of the plasticizer as large as 1.5 or more. Therefore, when the insulator 10 is polyethylene, the electromagnetic shield sheet 21 has PET (SP value: 10.7), fluororesin (SP value: 6.2), and polyurethane (SP value: 10.) on the insulating film layer 27. It is preferable to use a resin material such as 0).
As the "insulating film layer" in the present invention, various films, a resin layer coated and formed on a metal sheet layer, and the like can be used.

<Sheet folding process>
(A) to (c) of FIG. 3 are procedure explanatory views of a sheet folding process and a sheet winding process.
In the sheet folding step, the longitudinal end portions of the electromagnetic shield sheet 21 are folded so that the insulating film layers 27 face each other to form the folded portion 29. As shown in FIG. 3A, the electromagnetic shield sheet 21 is vertically attached to the insulated wire 11 with the metal sheet layer 25 inside, and then has a longitudinal end portion as shown in FIG. 3B. Wrap back. Of course, the electromagnetic shield sheet 21 may be vertically attached to the insulated wire 11 with the metal sheet layer 25 inside after folding back the end portion in the longitudinal direction.

<Sheet winding process>
In the sheet winding step, the folded portion 29 is provided so that the metal sheet layer 25 is on the inside and the end portion of the insulator 10 is exposed by a predetermined length L by the electromagnetic shield sheet 21 vertically attached to the insulated wire 11. Covers the periphery of the insulated wire 11 with the That is, as shown in FIG. 3C, the electromagnetic shield sheet 21 is wound around the insulated wire 11 with the folded-back portions 29 formed so that the edges in the direction along the extending direction of the electric wire overlap each other. The reason why the folded portion 29 of the electromagnetic shield sheet 21 is arranged so that the end portion of the insulator 10 is exposed by a predetermined length L is to secure a certain distance and to keep the insulation distance of the metal sheet layer 25 with respect to the conductor 13. Is.

<Sheath winding process>
FIGS. 4A to 4B are explanatory views of the sheath winding process.
In the sheath winding step, as shown in FIG. 4B, the sheath material 23 made of an adhesive tape is placed on the insulating film layer 27 of the electromagnetic shield sheet 21 shown in FIG. 4A, which covers the periphery of the insulated wire 11. Wrap and wrap. However, the folded-back portion 29 of the electromagnetic shield sheet 21 is left exposed without winding the sheath material 23. In this way, the sheath material 23 is wound around the electromagnetic shield sheet 21 that covers the circumference of the insulated wire 11, so that the so-called coaxial cable-equivalent shielded wire 100 is configured.

In the sheath winding step of the present invention, a method other than wrapping the tape-shaped sheath material 23 may be used. For example, the sheath material 23 may be roughly wound or may be wound with a sheet-shaped sheath material. However, since the portion of the insulating film layer (PET film) 27 of the electromagnetic shield sheet 21 is sticky, it is uncomfortable for the operator to hold it. Further, if the insulating film layer 27 is peeled off and deteriorates over time, the metal foil of the metal sheet layer 25 may be oxidized and corroded, and the transmission performance of the finally assembled electric wire structure (corresponding to the coaxial line) may be deteriorated. Therefore, in the sheath winding step, it is preferable to use a winding method in which the insulating film layer 27 is not exposed.

<Outer terminal connection process>
FIG. 4C is an explanatory diagram of the procedure of the outer terminal connecting process.
As shown in FIG. 4 (c), in the outer terminal connecting step, the tubular outer terminal 31 covering the inner terminal 15 is crimped to the folded-back portion 29 (see FIG. 5). At this time, the outer terminal 31 also crimps the end of the insulated wire 11 around which the sheath material 23 is wound.
In the outer terminal 31, a tubular portion 33, a shield crimping portion 35, and a sheath crimping portion 37 are sequentially provided from the tip side. The tubular portion 33 holds the inner terminal 15 inward via the dielectric 18 arranged inside. The shield crimping portion 35 composed of a pair of crimping pieces is crimped to the folded-back portion 29 of the electromagnetic shield sheet 21. The sheath crimping portion 37 composed of a pair of crimping pieces formed at a position rearward from the shield crimping portion 35 is crimped to the end of the insulated wire 11 around which the sheath material 23 is wound. As a result, the sheath crimping portion 37 of the outer terminal 31 can prevent the end of the sheath material 23 from fraying.

FIG. 5 is a side sectional view illustrating the terminal structure of the shielded electric wire manufactured by the method of connecting the shielded terminals.
The shielded electric wire 100 manufactured by the above-described shield terminal connecting method has an insulated wire 11, an inner terminal 15, an electromagnetic shield sheet 21, a sheath material 23, and an outer terminal 31.

The inner terminal 15 has an electrical contact portion 17 at its tip. In the inner terminal 15, the conductor crimping portion 19 is connected by crimping to the conductor 13 exposed from the insulator 10 at the end of the insulated wire 11.

The electromagnetic shield sheet 21 is formed in a long shape and covers the periphery of the insulated wire 11 with the metal sheet layer 25 integrated with the insulating film layer 27 inside and vertically attached.

The sheath material 23 is wound on the insulating film layer 27 of the electromagnetic shield sheet 21 that covers the periphery of the insulated wire 11. In the present embodiment, the sheath material 23 made of the adhesive tape is wrapped around as described above.

The outer terminal 31 is formed in a tubular shape and covers the inner terminal 15. In the shield crimping portion 35 of the outer terminal 31, the end portion of the insulator 10 is exposed by a predetermined length L in a state where the longitudinal end portions of the electromagnetic shield sheet 21 are folded so that the insulating film layers 27 face each other. It is crimped to the folded-back portion 29 arranged so as to. In the present embodiment, the end of the insulated wire 11 around which the sheath material 23 is wound is also crimped by the sheath crimping portion 37 at the same time. As a result, the outer terminal 31 is simultaneously crimped to the folded-back portion 29 and the end of the insulated wire 11, so that the end of the sheath material 23 is prevented from fraying without providing a separate anti-fray means.

Next, the operation of the above configuration will be described.
In the shield terminal connection method according to the present embodiment, the insulated wire 11 is covered with a vertically attached long electromagnetic shield sheet 21. As a result, the insulated wire 11 does not deteriorate in transmission characteristics due to misalignment as in the case where the metal foil tape is directly wrapped. Further, since the electromagnetic shield sheet 21 and the sheath material 23 are wound around the insulated wire 11, the material loss does not occur as in the case of peeling the insulating sheath 510 of the coaxial cable 507 shown in FIG. Less is.

Further, in the method of connecting the shield terminals of the present embodiment, since the sheath material 23 is wound on the insulating film layer 27 of the electromagnetic shield sheet 21, when the sheath material 23 is directly wound on the metal braided wire or the metal foil. In comparison, the sheath material 23 is less likely to be misaligned. Further, since the outer terminal 31 is crimped to the folded-back portion 29 of the electromagnetic shield sheet 21 in which the metal sheet layer 25 is exposed on the outer peripheral portion, it can be easily electrically connected to the electromagnetic shield sheet 21. The folded-back portion 29, which is made by folding the electromagnetic shield sheet 21 to increase its thickness, increases the repulsive force from the electromagnetic shield sheet 21 at the time of crimping, and enables easy and reliable crimping.

Further, in the method of connecting the shield terminals of the present embodiment, the insulating film layer 27 of the electromagnetic shield sheet 21 is made of a PET film having a SP value significantly different from that of the insulator 10 made of polyethylene. The plasticizer (bis phthalate or trimellitic acid) of the PVC electric wire does not migrate and deteriorate the transmission characteristics. As described above, by using the PET film, which is a resin film having an SP value significantly different from the SP value of the resin material in the insulator 10, for the insulating film layer 27 of the electromagnetic shield sheet 21, the metal sheet of the electromagnetic shield sheet 21 is used. A metal braided wire can also be used for the layer 25. That is, even if the metal braided wire does not have a high gas barrier property such as a metal foil, a resin film (PET film) having a SP value significantly different from that of the resin material in the insulator 10 is used for the insulating film layer 27 of the electromagnetic shield sheet 21. As a result, other plastics such as PVC electric wires do not migrate to the insulator 10 and deteriorate the transmission characteristics.

In the terminal structure of the shielded electric wire of the present embodiment, the insulated wire 11 is covered with a vertically attached long electromagnetic shield sheet 21. Therefore, the insulated wire 11 does not deteriorate in transmission characteristics due to misalignment as in the case where the metal foil tape is directly wrapped.

Further, in the terminal structure of the shielded electric wire of the present embodiment, since the sheath material 23 is wound on the insulating film layer 27 of the electromagnetic shield sheet 21, the sheath material 23 is directly wound on the metal braid or the metal foil. The sheath material 23 is less likely to be misaligned. Further, since the outer terminal 31 is crimped to the folded-back portion 29 of the electromagnetic shield sheet 21 in which the metal sheet layer 25 is exposed on the outer peripheral portion, the outer terminal 31 is reliably electrically connected to the electromagnetic shield sheet 21.

The method of connecting the shielded terminal and the terminal structure of the shielded electric wire of the present invention are not limited to the above-described embodiments, and are based on the combination of the configurations of the embodiments with each other, the description of the specification, and well-known techniques. Therefore, it is the intention of the present invention to be modified or applied by those skilled in the art, and it is included in the scope of seeking protection.

Therefore, according to the shield terminal connection method according to the present embodiment, deterioration of transmission characteristics can be suppressed and material loss can be reduced.
Further, according to the terminal structure of the shielded electric wire according to the present embodiment, deterioration of transmission characteristics can be suppressed.

The present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, and the like. In addition, the material, shape, dimensions, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

Here, the features of the above-described method of connecting the shielded terminal and the embodiment of the terminal structure of the shielded electric wire according to the present invention are briefly summarized and listed below in [1] to [3], respectively.
[1] An inner terminal connecting step of connecting the inner terminal (15) to the exposed conductor (13) by removing the insulator (10) at the end of the insulated wire (11).
The longitudinal end of the long electromagnetic shield sheet (21) in which the metal sheet layer (25) and the insulating film layer (27) are integrated is folded so that the insulating film layers face each other and folded back (29). ) And the sheet folding process
With the folded portion arranged so that the end portion of the insulator is exposed by a predetermined length (L) by the electromagnetic shield sheet vertically attached to the insulated wire so that the metal sheet layer is on the inside. , The sheet winding process that covers the circumference of the insulated wire,
A sheath winding step of winding the sheath material (23) on the insulating film layer that covers the periphery of the insulated wire.
An outer terminal connecting step of crimping a tubular outer terminal (31) covering the inner terminal to the folded portion,
A method of connecting a shield terminal, which comprises.
[2] The shield terminal according to the above [1], wherein the insulating film layer is made of a resin film (PET film) having an SP value significantly different from the SP value of the resin material (polyethylene) in the insulator. Connection method.
[3] An inner terminal (15) connected to a conductor (13) exposed from the insulator (10) at the end of the insulated wire (11), and
A long electromagnetic shield sheet (21) that covers the periphery of the insulated wire with the metal sheet layer (25) integrated with the insulating film layer (27) inside and vertically attached.
The sheath material (23) wound on the insulating film layer covering the periphery of the insulated wire, and
A folded portion (29) arranged so that the end portion of the insulator is exposed by a predetermined length (L) while the longitudinal end portions of the electromagnetic shield sheet are folded so that the insulating film layers face each other. ), And the tubular outer terminal (31) that covers the inner terminal.
The terminal structure of the shielded electric wire (100), which comprises.

10 ... Insulator 11 ... Insulated wire 13 ... Conductor 15 ... Inner terminal 21 ... Electromagnetic shield sheet 23 ... Sheath material 25 ... Metal sheet layer 27 ... Insulating film layer 29 ... Folded part 31 ... Outer terminal 100 ... Shielded wire

Claims (3)

The inner terminal connection process of connecting the inner terminal to the exposed conductor by removing the insulator at the end of the insulated wire,
A sheet folding step of forming a folded portion by folding the longitudinal end portions of a long electromagnetic shield sheet in which a metal sheet layer and an insulating film layer are integrated so that the insulating film layers face each other.
In a state in which the metal sheet layer by the vertical served by said electromagnetic shielding sheet to the insulated wire so as to become an inner, end of the insulator placing the folded portion so as to expose a predetermined length, the insulation A sheet winding process that covers the periphery of the insulated wire by overlapping the edges extending along the extending direction of the wire and winding them around the insulated wire.
A sheath winding step of winding a tape-shaped or sheet-shaped sheath material on the insulating film layer that covers the periphery of the insulated wire.
An outer terminal connection step of crimping a tubular outer terminal covering the inner terminal to the folded portion, and
A method of connecting a shield terminal, which comprises. The method for connecting a shield terminal according to claim 1, wherein the insulating film layer is made of a resin film having an SP value different from the SP value of the resin material in the insulator by 1.5 or more . The inner terminal connected to the conductor exposed from the insulator at the end of the insulated wire,
The metal sheet layer integrated with the insulating film layer is vertically attached to the inside, and the edges extending in the extending direction of the insulated wire are wound around the insulated wire so as to overlap each other. A long electromagnetic shield sheet that covers the circumference of the insulated wire,
A tape-shaped or sheet-shaped sheath material wound on the insulating film layer that covers the periphery of the insulated wire, and
In a state where the longitudinal end portions of the electromagnetic shield sheet are folded so that the insulating film layers face each other, the end portions of the insulator are crimped to a folded portion arranged so as to be exposed to a predetermined length. , The tubular outer terminal that covers the inner terminal,
Shielded wire terminal structure with.

Images