JPH05190024A - Ribbon cable with shield and manufacture thereof - Google Patents

Abstract

PURPOSE:To facilitate the processing of a terminal connection part by providing a strip-like insulation fastening part in both ends of a plate-like body of wire groups and then prearranging a section to be provided with a terminal connection part constituting the former by peeling off an insulating coating in the succeeding process. CONSTITUTION:A group of insulating coating-covered core wires having the same length as a required cable length and an earth wire 2 are arranged in parallel at a required pitch to constitute a plate-like body 9 of wire groups with the end 3 of a cable made even. In the plate-like body 9, a strip-like insulation fastening part 4 is provided in a direction crossing the wire groups, thereby fixing the core wire groups and the earth wire 2 in parallel and at the same time allowing the first half of both ends of the fastening part 4 to make a terminal connection forming part 5. And a shield tape 6 is applied to both top and bottom surfaces of the plate-like body 9 except the terminal connection forming part 5, thereby forming a ribbon cable 10 with a shield extruding the terminal connection forming part 5. In the foregoing cable 10, the first half of the fastening part 4 and the insulating coating of the core wire groups 1 within the terminal connection forming part 5 are peeled off in the succeeding process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shielded ribbon cable used for electrical wiring of electronic equipment and the like, and a method for manufacturing the shielded ribbon cable.

[0002]

2. Description of the Related Art A shielded ribbon cable and a method of manufacturing the same are disclosed in Japanese Patent Laid-Open No. 195608/1986, Sho 61-1.
There are a large number of known examples such as Japanese Patent No. 66333, and those known examples are plate-shaped bodies in which a plurality of groups of insulating coated core wires and ground wires of the coated core wire groups are arranged in parallel at a required pitch. A long shielded ribbon having a structure in which a shield layer of metal foil is laminated above and below the covered core wire group and the ground wire of the exposed conductor, and a jacket layer is further laminated on the shield layer. Manufactured as a cable.

Then, the long ribbon cable is cut into a required cable length for wiring, and a shield layer and a jacket layer at a part of both ends of the cut ribbon cable are peeled and removed, and a coated core wire is coated. The conductors are peeled off to expose the conductors, and the exposed conductor group and the ground wire are formed into a terminal connecting portion protruding a little long. Then, a terminal processing method is adopted in which the terminal connecting portion is connected to the other side and wired.

The problems with the invention to be solved In the conventional ribbon cable with a shield described above, when the terminal connecting portion is processed and formed in the final step, the portion to be formed in the terminal connecting portion has a shield. Since the layer and the jacket layer are laminated and the parallel pitch of the insulation coated core wire group also varies, it is extremely complicated to cut and remove only the unnecessary portions of the shield layer and the jacket layer, The processing process, processing equipment, and processing jig become indispensable, and there is a problem that the molding cost of the terminal connection part increases. Even if the terminal connecting portion is manually formed, it requires a lot of man-hours and is inefficient, and it has a required cable length and a terminal connecting portion and is ready for use in a shielded ribbon cable. Mass production is inferior.
The present invention provides a ribbon cave with a shield and a method for manufacturing the same, which solves the above-mentioned drawbacks of the prior art.

[0005]

SUMMARY OF THE INVENTION The present invention for solving the above-mentioned technical problem is to form an electric wire group plate-shaped body in which an insulating coated core wire group of the same length and an earth wire are arranged in parallel, and the electric wire group plate-shaped body is formed. At both ends of the electric wire group in a band shape having a required width from the cable end, and having insulating fixing portions for fixing the electric wire group in the transverse direction of the electric wire group, and further, A shield tape of a two-layer composite of a conductive metal layer and an insulating layer is formed on the upper and lower surfaces of the wire group plate-like body, leaving the conductive metal layer on the inside, leaving the terminal connection portion formation planned portion corresponding to the first half of each. A first invention of a shielded ribbon cable, characterized in that

In the method for manufacturing a shielded ribbon cable according to the first aspect of the present invention described above, the "insulation-coated core wire group and the ground wire are formed into a wire group plate having a required parallel pitch and are successively fed. In the progressive step, at arbitrary intervals in the longitudinal direction of the electric wire group plate-shaped body, insulating fusion tapes are adhered to the upper and lower surfaces of the electric wire group plate-shaped body to form band-shaped fixing portions intermittently. Then, a shield tape is adhered to both upper and lower surfaces of the wire group plate-like body, leaving the whole of the adhered portion or most of the adhered portion excluding both edges in the front-rear direction. Of the shielded ribbon cable having a required cable length by exposing the end-portion formation-scheduled part formed by each half of the cut fixing part to both ends by cutting the middle part of It consists of two inventions.

In the shielded ribbon cable described above, in a subsequent step, the insulating coatings of the portions to be formed with the terminal connecting portions at both ends are peeled off to form the terminal connecting portions with the conductors exposed, and the shield is ready for use. It is made into an attached ribbon cable. Further, as a mode of the shielded ribbon cable of the first invention, an insulating coating jacket is applied to the surface and the edge of the attached shielded cable to insulate the conductive metal layer exposed from the edge of the shield tape. It may be planned.

[0008]

In the shielded ribbon cable according to the present invention described above, the portions to be formed with the terminal connecting portions at both ends are exposed from the shield tapes attached to the upper and lower surfaces of the electric wire group, and when the terminal connecting portions are formed, the processed portions are formed. Since there is no shield tape that hinders workability, it becomes easier to process the terminal connection part, and no special processing process, processing device, or processing jig is required. And according to the manufacturing method of the second invention,
Since the fixed part formation, shield tape application, and cable cutting positions are performed continuously in sequence during the fixed part formation position, shield tape application position, and cable cutting position during the continuous forwarding process of the wire group plate-shaped body, A shielded ribbon cable with a long cable length can be continuously formed extremely efficiently.

[0009]

Embodiments will be described in detail below based on embodiments. First, referring to FIG. 1 showing a shielded ribbon cable according to an embodiment of the present invention, a group of insulation coated core wires 1 (hereinafter, simply referred to as core wire 1) and ground wire 2 having a required cable length and the same length, The wire group plate-shaped body 9 in which the cable ends 3 are arranged in parallel at the required pitch and aligned is the main part, and a required width from the cable end 3 is provided at both ends of the wire group plate-shaped body 9. The band-shaped insulating fixing portion 4 is provided in the transverse direction of the electric wire group, and the fixing portions 4 fix the juxtaposed postures of the group of core wires 1 and the ground wires 2 and the front half of each fixing portion 4 at both ends. The portion serves as a terminal connection portion formation-scheduled portion 5 to be formed in the terminal connection portion where the conductor is exposed and protruded by peeling off the insulating coating of the first group of core wires in a later step.

[0012] Then, leaving the terminal connecting portion forming scheduled portion 5 on the upper and lower surfaces of the electric wire group plate-shaped body 9 formed by the group of core wires 1 and the ground wire 2, "a conductive metal layer 7 of copper foil and polyester insulation are formed. The double-layer composite tape of the layer 8 ", and the shield tape 6 having a fusion bonding layer (not shown) on the surface of the conductive metal layer 7,
The conductive metal layer 7 is attached to the core wire 1 and the ground wire 2 side so that the whole surface of the wire group plate-like body is shielded, and a predetermined cable length is provided to project the terminal connection portion formation planned portions 5 at both ends. The installed shielded ribbon cable 10 is configured. The shield tape 6 is fused to the whole number of the ground wires 2 and the core wires 1 or a part of the ground wire 2 and at least one or more core wires 1 group,
The sticking posture to the electric wire group is designed not to be peeled off.
The edges of the shield tape 6 and the fixing portion 4 are butt-joined to each other, or the edges of the shield tape 6 and the edge of the fixing portion 5 are overlapped and joined. ..

The shielded ribbon cable 10 described above is
As shown in FIG. 2, in the subsequent step, the first half of the fixing portion 4 of the terminal connection portion formation scheduled portion 5 and the insulation coating of the core wire 1 group in the terminal connection portion formation scheduled portion 5 are peeled off, and the core wire 1 group The conductor is formed on the exposed terminal connecting portion 11 and is formed on the shielded ribbon cable 12 ready for use. When forming the terminal connection part 11, a reinforcing band 13 in which a part of the fixing part 4 is left in a band shape is provided, or a reinforcing tape 14 (or a reinforcing plate) is provided on either of the upper and lower surfaces of the protruding conductor group. May be attached to reinforce the terminal connecting portion 11.

Next, another embodiment of the first invention will be described with reference to FIG. That is, in the same manner as in the above-described embodiment, the shielded ribbon cable 10 in which the shield tape 6 is adhered to the upper and lower surfaces of the group of core wires 1 and the ground wire 2 except for the portions 5 where the terminal connection portions are to be formed, is attached. An insulative covering jacket 23 is provided to wrap the surface and the edge of the tape 6. In FIG. 3, the edge of the conductive metal layer 7 exposed from the edge of the shielded cable 6 is insulated by the coating jacket 23.

Next, with reference to FIG. 4, an embodiment of a method of manufacturing the shielded ribbon cable 10 of the present invention will be described.
First, as shown in the drawing, the manufacturing apparatus used in this manufacturing method is an electric wire supply unit 15 including a group of electric wire reels 20 of a group of core wires 1 and an earth wire 2, and an electric wire group progressive processing unit following the electric wire supply unit 15. It consists of 16, and in this wire group progressive processing section 16,
The fixed portion forming position 17 in the first step, the shield tape adhering position 18 in the second step, and the cable cutting position 19 in the third step are sequentially provided to constitute the shielded ribbon cable manufacturing apparatus. Then, the shielded ribbon cable 10 is manufactured by the following procedure.

That is, the ground wire 1 and the required number of core wires 1 drawn out from the electric wire supply unit 15 are transferred to the electric wire group progressive processing unit 16 as the electric wire group plate-like bodies 9 arranged in parallel at a required pitch. To be done. Then, at the fixed portion forming position 17,
The insulating fusion bonding tape 21 is adhered at required intervals in the longitudinal direction of the wire group plate-shaped body 9 to intermittently form the fixing portions 4.

Next, the shield tape attaching position 1
In Fig. 8, a shield tape 6 having a required tape length and a tape width sufficient to cover the entire width of the wire group plate-shaped body 9 is provided, and a core wire 1 between the fixing portions 4 and upper and lower surfaces of the ground wire 2 and fixing portions at both ends. 4 is attached so as to cover a part of the side edge 22 in the front-rear direction, and then, in the cable cutting portion 19, the middle of the chain line C of the fixing portion 4 is sequentially cut to sequentially cut and separate the electric wire group plate state 9. To be done. Thus, the tip end of each half of the fixed portion 4 that has been cut serves as the terminal connection portion formation scheduled portion 5, has the required cable length L, and leaves the terminal connection portion formation scheduled portion 5 on both upper and lower surfaces. The shielded ribbon cable 10 having the shield tape 6 attached thereto is continuously manufactured.

The above-mentioned respective embodiments have the above-mentioned effects, and the formability of the shielded ribbon cable ready for use is improved as compared with the conventional one.

[0017]

As described above, the shielded ribbon cable of the present invention and the manufacturing method thereof are improved in formability of the shielded ribbon cable in a ready-to-use state, and the shielded ribbon cable is inexpensive. There is an effect that can be mass-produced.

[Brief description of drawings]

FIG. 1 shows a ribbon cable with a shield according to an embodiment of the present invention, in which A is a plan view and B is a side view thereof.

FIG. 2 is a plan view of a terminal connecting portion formed on the shielded ribbon cable of FIG. 1 embodiment.

FIG. 3 is a cross-sectional view of a shielded ribbon cable according to another embodiment of the present invention.

FIG. 4 shows an embodiment of a method for manufacturing a shielded ribbon cable of the present invention, in which A is a front view showing the manufacturing method and B is a plan view showing the manufacturing method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulation coated core wire 2 Ground wire 3 Cable end 4 Fixed part 5 Terminal connection part formation planned part 6 Shield tape 7 Conductive metal layer 8 Insulation layer 9 Electric wire group plate body 10 Shielded ribbon cable 11 Terminal connection part 13 Reinforcement band 14 Reinforcement tape 15 Electric wire supply section 16 Electric wire group progressive processing section 17 Adhering section forming position 18 Shield tape adhering position 19 Cable cutting position 20 Electric wire reel 23 Coated jacket

Claims (6)

[Claims] Claim: What is claimed is: 1. An electric wire group plate-shaped body in which an insulating coated core wire group and a ground wire of the same length are arranged in parallel, and a required width from a cable end of the electric wire group is provided at both ends of the electric wire group plate-shaped body. Having a strip shape and having an insulating fixing portion for fixing the electric wire group in the transverse direction of the electric wire group, and further leaving a terminal connection portion formation planned portion corresponding to each front half of the fixing portion. A ribbon cable with a shield having a structure in which a two-layer composite shield tape having a conductive metal layer and an insulating layer is attached to both upper and lower surfaces of the electric wire group plate-like body with the conductive metal layer inside. 2. The shielded ribbon cable according to claim 1, wherein a shield tape is fused to at least one of the ground wire and the insulating coated core wire group. 3. The shielded ribbon cable according to claim 1 or 2, wherein an insulative jacket covering the surface and edge of the attached shield tape is applied. 4. Claim 1 or claim 2 or claim 3.
The shielded ribbon cable is a shielded ribbon cable in which the conductors of the group of cores in the part where the terminal connection part is to be formed are exposed to form the terminal connection part. 5. A reinforcing band in which the fixing portion is left in a strip shape, or
The shielded ribbon cable according to claim 4, comprising a terminal connecting portion provided with a reinforcing plate / reinforcing tape on either the upper or lower surface of the exposed conductor group. 6. The insulation-coated core wire group and the ground wire are formed into a wire group plate-shaped body having a required parallel pitch and continuously fed, and in the continuous feeding step, the length of the wire group plate-shaped body is increased. At arbitrary intervals in the direction, insulating fusion tapes are adhered to the upper and lower surfaces of the electric wire group plate-like body to intermittently form band-shaped fixing portions,
Subsequently, shield tape is adhered to both upper and lower surfaces of the wire group plate-like body, leaving the whole of the adhered portion or most of the adhered portion excluding both edges in the front-rear direction. A shielded ribbon cable having a required cable length and having a terminal connecting portion formation planned portion formed by each cut half portion of the fixed portion is exposed at both ends by cutting the middle of the portion. A method of manufacturing a ribbon cable with a shield.