JPH0877841A - Multiple shield wire and its manufacture - Google Patents

Abstract

PURPOSE: To simplify the manufacture process of a multiple shield wire and facilitate the terminal processing. CONSTITUTION: A shield tape 27, which has a metallic foil shield layer consisting of a metal of the different kind from or the same kind as a braided shield 24 is wound, outside the cover 25, around a single shield wire 26 consisting of the core 23, the braided shield 24 outside it, and an insulating cover 25 outside it, so that the metallic foil shield layer may be exposed, by longitudinal affixing wrapping. Inside the cover 25 does not a plurality of shields lie but lies only one braided shield 24, and the shield tape 27 is wound outside the cover 25, so the manufacture process can be simplified as compared with a conventional one, and besides there is no necessity to peel off a plurality of shields at the time of terminal processing, and the terminal processing can be performed easily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-shielded wire used for wiring of electronic equipment such as copying machines, facsimile machines, and automobiles, and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, a multi-shielded wire used for wiring electronic devices and automobiles is constructed as shown in FIG. 9, for example.

That is, a conductor 1 is covered with an insulating coating 2 to form a core 3, an inner shield 4 made of a braid is formed on the outer side of the core 3, and an insulation made of paper, vinyl or the like is provided on the outer side of the inner shield 4. A layer 5 is formed, an outer shield 6 made of a metal foil or a braid is further formed on the outer side of the insulating layer 5, and an insulating jacket 7 is formed on the outer side of the outer shield 6 to form a multiple shielded wire 2. The heavy shielded wire 8 is configured.

As shown in FIG. 10, there is also a double shielded wire 9 having two or more cores 3. At this time, as in the case of one core 3, the inner shield 4, the insulating layer 5, and the like.
An outer shield 6 and a jacket 7 are provided.

By the way, the end processing of such a double shielded wire is performed, for example, as shown in FIG. 11, and the outer shield 7 at the tip portion of the double shielded wire 9 is peeled off and the outer shield 6 is removed.
Is exposed, the tip of the outer shield 6 is removed leaving a part thereof to expose the insulating layer 5, and the tip of the insulating layer 5 is removed leaving a part of the inner shield 4 exposed to expose the inner shield 4. 4 is peeled off to expose both cores 3, the peeled inner shield 4 is twisted, the insulating tube 11 is covered on the exposed tip of the insulating layer 5, and both cores 3 and the twisted inner shield 4 are The tips are inserted into predetermined slots of the housing 12 of the connector, and the exposed portion of the outer shield 6 is fixed to a fixing member (not shown) by a holding jig 14 having a holding portion 13 having an arcuate cross section. .

[0006]

However, in the case of the conventional double shielded wire (multi-shielded wire), the inner shield 4 and the outer shield 6 must be formed inside the jacket 7, and the shielded wire is manufactured. There is a problem that the process becomes complicated and the terminal processing also becomes complicated.

Therefore, the present invention has been made in order to solve the above-mentioned problems, and an object thereof is to simplify the manufacturing process of the multiple shielded wire and to facilitate the terminal processing. And

[0008]

According to a first aspect of the present invention, there is provided a multiple shielded wire comprising a core formed by coating a conductor with an insulating coating, a conductive shield formed outside the core, and the conductive material. An insulating outer cover formed on the outer side of the shield, and a shield tape formed on the outer side of the outer cover so that the metal foil shield layer is exposed and the metal foil shield layer is exposed. There is.

At this time, as described in claim 2 or 3, the metal foil shield layer of the shield tape may be made of a metal different from or the same as the metal of the conductive shield.

As a manufacturing method thereof, as described in claim 4, a core formed by coating a conductor with an insulating coating,
A shield tape having a metal foil shield layer is provided on the outside of a shield wire formed of a conductive shield formed on the outside of the core and an insulating jacket formed on the outside of the conductive shield. It is effective to wrap the layer so that it is exposed.

[0011]

According to the first aspect of the present invention, the inside of the jacket is not provided with a plurality of shields as in the conventional case, but only one conductive shield is formed, and the outside of the jacket is provided. Since only the shield tape is wound, the manufacturing process is simplified as compared with the conventional method, and it is not necessary to separate a plurality of shields at the time of terminal processing, and terminal processing can be easily performed.

As the conductive shield, well-known techniques such as metal foil, braiding, and horizontal winding are used according to the application.

Further, as described in claim 2 or 3, by winding a shield tape having a metal foil shield layer of a metal different from or the same as the metal of the conductive shield on the outside of the outer cover, a wide range is provided in the case of different types. A shielding effect over the range can be obtained, and in the case of the same kind, the shielding effect in the same range as the conductive shield can be improved.

On the other hand, in the manufacturing method according to the fourth aspect, since the shield tape having the metal foil shield layer is wound on the outer side of the shielded wire, the existing shielded wire can be used, and the multiple shielded wire can be easily wound by winding the shielded tape. Is manufactured, and the shield range can be appropriately selected by adjusting the winding length of the shield tape with respect to the entire length of the shield wire.

[0015]

1 is a perspective view of an embodiment of the present invention, FIG. 2 is a sectional view, FIG. 3 is an operation explanatory view showing a manufacturing process, and FIG. 4 is a perspective view during manufacturing.

As shown in FIGS. 1 and 2, a conductor 21 is covered with an insulating coating 22 to form a core 23, and a braided shield 24 is formed outside the core 23 as a conductive shield. A single shielded wire 26 is formed by forming an insulating jacket 25 on the outside, and a metal foil shield layer made of a metal different from or the same as the metal of the braided shield 24 is formed on the outside of the jacket 25 of the single shielded wire 26. The shield tape 27 which it has is wrapped by vertical wrapping so that this metal foil shield layer is exposed,
A double shielded wire 28 that is a multiple shielded wire is configured.

At this time, for the braided shield 24, for example, a conductor obtained by braiding a wire coated with tin may be used, and the metal foil shield layer of the shield tape 27 may be made of copper,
Aluminum, tin, zinc, gold, silver, etc.,
Alternatively, multiple pieces of these metal foils are laminated (copper +
Aluminum or the like) may be used.

The shield tape 27 is vertically lapped by the procedure shown in FIG.
The single shielded wire 26 fed out from the tape drawing die 3 is fed by the plurality of feeding rollers 31a, 31b, 31c.
2, the shield tape 27 supplied from the tape roller 33 is also sent to the tape drawing die 32 together with the tape tape 33, and the tape drawing die 32 separates the shield tape 27 as shown in FIG. Shielded wire 26
Is vertically wrapped and fed to a cutting machine including a cutting blade 34.

By the way, the terminal processing of the double shielded wire 28 manufactured as described above is performed, for example, as shown in FIGS.

First, in the case of the terminal processing shown in FIG. 5, the shield tape 27 and the jacket 2 at the tip of the double shielded wire 28 are formed.
5 is peeled off to expose the braided shield 24, the exposed braided shield 24 is partially left to expose the core 23, and the insulating tube 36 is covered on the outer side of the braided shield 24 left unpeeled. At the same time, the stripped braided shield 24 is twisted, and the tips of the core 23 and the twisted braided shield 24 are inserted into the predetermined slots of the housing 37 of the connector, respectively, and the pressing portion 3 having an arcuate cross section is formed.
The shield tape 27 is fixed to a fixing member (not shown) by a holding jig 39 having eight.

Next, in the case of the terminal processing shown in FIG.
In the same manner as in the above case, the shield tape 27 and the jacket 25 at the tip of the double shielded wire 28 are peeled off, and
4 is exposed, the exposed braided shield 24 is folded back in the opposite direction so as to cover the end of the shield tape 27, and is peeled off, the core 23 is exposed, and the crimp terminal 41 is attached to one end of the covered wire. The other end of the ground wire 42, which is stripped, is bound together with the braided shield 24 by a binding band 43.

Then, in the case of the terminal processing shown in FIG.
In the same manner as in the above case, the shield tape 27 and the jacket 25 at the tip of the double shielded wire 28 are peeled off and the braided shield 2
4 is exposed, and a part of the braided shield 24 is exposed
Is peeled off to expose the core 23, the insulating tube 36 is covered on the outer side of the braided shield 24 that is left unpeeled, and the peeled braided shield 24 is twisted to remove the core 23 and the twisted braided shield 24. One end of the ground wire 45, which is composed of a tip and a covered wire, is inserted into a predetermined slot of the housing 37 of the connector, and the ground wire 4
5 with the stripped other end in contact with the shield tape 27 near the insulating tube 36.
Are bound by.

In the case of the terminal processing shown in FIG. 8, the shield tape 27 and the jacket 25 at the tip of the double shielded wire 28 are peeled off at both ends to expose the braided shield 24, as in the case of FIG. The exposed part of the braided shield 24 is peeled off to expose the core 23, the insulating tube 36 is covered on the outer side of the braided shield 24 left unpeeled, and the peeled braided shield 24 is removed.
Is twisted, the tips of the core 23 and the twisted braided shield 24 are respectively inserted into predetermined slots of the housing 37 of the connector, and the ground wire 49 consisting of a bare wire having crimp terminals 48 attached to both ends is the double wire. The ground wire 49 is arranged along the shield wire 28, and is bound by a binding band 50 in the vicinity of both the insulating tubes 36 while the ground wire 49 is in contact with the shield tape 27.

Therefore, by winding the shield tape 27 on the outside of the single shield wire 26 so that the metal foil shield layer of the shield tape 27 is exposed, a plurality of shields are provided inside the jacket 25 as in the conventional case. Not 1
Since there is only one braided shield 24 as one conductive shield, and only the shield tape 27 is wound around the outer jacket 25, the manufacturing process can be simplified as compared with the conventional one, and the terminal processing Since it is not necessary to peel off a plurality of shields also in this case, terminal processing can be performed extremely easily as compared with the conventional method.

Further, since the shield tape 27 having a metal foil shield layer made of a metal different from or the same as the metal of the braided shield 24 is wound around the outside of the jacket, a wide range of shielding effect can be obtained in the case of different types. In the case of the same type, the shield effect can be improved in the same range as the braided shield.

Furthermore, since the shield tape 27 is wound around the outside of the single shielded wire 26, the existing single shielded wire 2 is used.
6 can be used, the double shielded wire 28 can be easily manufactured only by winding the shield tape 27, and the shield tape 27 for the entire length of the single shielded wire 26 can be manufactured.
It is possible to appropriately select the shield range by adjusting the winding length of.

In the above embodiment, the case where the number of cores is one has been described. However, even when the number of cores is two or more, the present invention can be implemented in the same manner, and the same effect as that of the above embodiment Can be obtained.

Further, the conductive shield is not limited to the above-mentioned braided shield, but may be a well-known one such as a metal foil or a horizontally wound shield.

[0029]

As described above, according to the first aspect of the present invention, the shield tape is provided on the outside of the shield wire having the core, the conductive shield, and the outer cover, and the metal foil shield layer of the shield tape. By winding so that it is exposed, there is only one conductive shield inside the jacket instead of multiple shields as in the past, so the manufacturing process can be simplified compared to the conventional Moreover, because it is not necessary to peel off multiple shields when processing terminals,
Terminal processing can be performed much more easily than in the past, and a highly versatile multiple shielded wire can be easily obtained.

Further, as described in claim 2 or 3, by winding a shield tape having a metal foil shield layer made of a metal different from or the same as the metal of the conductive shield on the outside of the outer cover, a wide range can be obtained in the case of different types. The shielding effect can be obtained over the range, and in the case of the same kind, the shielding effect can be improved in the same range as the braided shield.

On the other hand, according to the manufacturing method of claim 4,
Existing shielded wire can be used, multiple shielded wires can be easily manufactured by winding the shield tape, and the shield range can be appropriately selected by adjusting the winding length of the shield tape with respect to the total length of the shielded wire. Becomes

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a sectional view of an example.

FIG. 3 is an operation explanatory view showing the manufacturing process of the embodiment.

FIG. 4 is a perspective view of one embodiment during manufacturing.

FIG. 5 is a perspective view of a part of a state according to an embodiment.

FIG. 6 is a schematic view of a part of another state of the embodiment.

FIG. 7 is a schematic view of a part of a different state of one Example.

FIG. 8 is a schematic view of a part of a further different state of one embodiment.

FIG. 9 is a perspective view of a conventional example.

FIG. 10 is a perspective view of another conventional example.

FIG. 11 is a perspective view of a portion of FIG.

[Explanation of symbols]

 21 conductor 22 insulating coating 23 core 24 braided shield 25 jacket 26 single shielded wire 27 shield tape

Claims (7)

[Claims] 1. A core formed by coating a conductor with an insulating coating, a conductive shield formed outside the core, and an insulating jacket formed outside the conductive shield.
A multi-shield wire, comprising: a metal foil shield layer; and a shield tape formed on the outside of the jacket so that the metal foil shield layer is exposed. 2. The multiple shielded wire according to claim 1, wherein the metal foil shield layer of the shield tape is made of a metal different from the metal of the conductive shield. 3. The multiple shielded wire according to claim 1, wherein the metal foil shield layer of the shield tape is made of the same metal as the metal of the conductive shield. 4. A shielded wire comprising a core formed by coating a conductor with an insulating coating, a conductive shield formed outside the core, and an insulating jacket formed outside the conductive shield. A method for manufacturing a multiple shielded wire, comprising: wrapping a shield tape having a metal foil shield layer on the outer side of the wire so that the metal foil shield layer is exposed. 5. The method for manufacturing a multiple shield wire according to claim 4, wherein the metal foil shield layer of the shield tape is made of a metal different from the metal of the conductive shield. 6. The method of manufacturing a multiple shield wire according to claim 4, wherein the metal foil shield layer of the shield tape is made of the same metal as the metal of the conductive shield. 7. The method of manufacturing a multiple shield wire according to claim 4, wherein the shield tape is vertically wrapped.