JPH0590738U - Shielded tape electric wire - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a shielded tape electric wire which can always keep the shielding characteristics uniform. [Structure] A shielded tape electric wire 1 shown in FIG. 1 includes four flat conductors “hereinafter referred to as“ conducting wires ”” 1, 1, ... , ..., 1 are joined with the insulating tapes 3 and 4 so that the respective end portions are exposed, and the insulating tape 3 on one conductor wire 1A that functions as a drain wire is peeled off to be exposed, and each end portion is exposed. The tape electric wire 10 to which the reinforcing tapes 14 and 14 are adhered is formed, and the shielding layer 6 is formed by vapor-depositing or fusion-plating a conductive member on a portion of the terminal portion other than the exposed portion of the conductor wire.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention is an improvement of a shielded tape electric wire in which a plurality of conductive wires are arranged in parallel in the longitudinal direction between two insulating tapes (plastic tapes), these are fused and integrated, and a shielding layer is provided on the outside thereof. Regarding

[0002]

[Prior Art]

 In recent years, with the development of electronic devices, electronic devices are becoming more multifunctional and more compact. Therefore, the high density mounting inside the electronic equipment makes it impossible to use the conventional connector plug that takes a space for the wiring between each board, and it is not possible to connect multiple conductive wires in the length direction between two insulating tapes. Thin and flexible tape electric wires, which are arranged in parallel and integrated with an exposed portion of the lead wire, have come into widespread use. And nowadays, electromagnetic wave interference of electronic devices is regarded as a problem, it is necessary to take measures against electromagnetic wave interference (EMI), and this type of tape wire uses a shielded tape wire with an electromagnetic shielding layer (shield layer). Came to be.

The applicant previously applied for a shielded tape electric wire 30 as disclosed in Japanese Patent Application Laid-Open No. 4-33211.

As shown in FIGS. 2 and 7 to 9, the shielded tape electric wire 30 includes four flat conductor wires “hereinafter, referred to as“ conductor wires ”” 2, 2, ... , 2 are joined by integrating insulating tapes 3 and 4 so that the ends of the conductors 2, 2, ..., 2 are exposed respectively, and reinforcing tapes 14 and 14 are adhered to the ends, respectively. The electric tape 17 is formed, and the insulating tape 3 on one conductor 2A that functions as a drain wire of the tape electric wire 17 is peeled and exposed as shown in FIG. The metal tapes 20 and 20 composed of the above are bonded to each other with the metal surface facing down to form a shielding layer. FIG. 10 shows a shielded tape electric wire 40 when the metal tape 20 is wound around the tape electric wire 17.

[0005]

[Problems to be solved by the device]

 However, in the shielded tape electric wires 30 and 40 shown in FIGS. 9 and 10, aluminum / polyester with an adhesive containing conductive carbon is used as the metal tape 20, but the contact resistance with the drain wire 2A is increased in the longitudinal direction. It was difficult to keep the temperature uniform, and there was the inconvenience that the shielding characteristics varied among products.

[0006]

[The purpose of the device]

 It is an object of the present invention to provide a shielded tape electric wire which is capable of improving the above-mentioned disadvantages of the conventional example and always keeping the shielding characteristics uniform.

[0007]

[Means for Solving the Problems]

 Therefore, in the present invention, in a tape electric wire in which insulating tapes are bonded and integrated on the upper and lower surfaces of a plurality of conducting wires arranged in parallel in the longitudinal direction, a shield made of a thin film made of a conductive member is formed on the surface of the insulating tape. It is intended to achieve the above object by adopting a constitution of providing layers.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS.

Here, the same components as those of the conventional example are designated by the same reference numerals.

The shielded tape electric wire 1 shown in FIG. 1 has four flat conductors “hereinafter referred to as“ conducting wires ”) 2, 2, ... The insulating tapes 3 and 4 are bonded so that the end portions of 2, ..., 2 are exposed respectively, and the insulating tape 3 on one conductor 2A that functions as a drain wire is peeled off and exposed as shown in FIG. The tape electric wire 10 is formed by adhering the reinforcing tapes 14 and 14 to each terminal portion, and the shielding layer 6 is formed by vapor deposition plating or melting plating of a conductive member on a portion of the terminal portion other than the exposed wire portion. As shown in FIG. 5, a protective layer 8 such as an enamel or an insulating film is provided outside the shielding layer 6.

FIGS. 3, 4 and 6 show the shielded tape electric wire 11 without the drain wire.

In this embodiment, the shielding layer (plating) preferably has a thickness of 3 μm or more, and the surfaces of the insulating tapes 3 and 4 are preferably rough so that the plating can be easily deposited.

Since this embodiment is configured as described above, the electrical connection resistance in the longitudinal direction between the drain wire 2A and the shield layer is kept constant, and it is much thinner than when the metal tape 20 is used. Since the shielding layers 5 and 6 can be formed, the shielded tape electric wires 1 and 11 of constant quality can be easily provided without impairing the flexibility.

[0014]

[Effect of the device]

 Since the present invention is configured as described above, it is possible to provide a shielded tape electric wire that can always keep the shielding characteristics uniform.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a shielded tape electric wire according to the present invention.

FIG. 2 is a perspective view of the tape electric wire before formation of FIGS. 1, 9 and 10.

FIG. 3 is a perspective view showing another embodiment of the shielded tape electric wire according to the present invention.

FIG. 4 is a perspective view of the tape electric wire before formation of FIG.

5 is a cross-sectional view taken along the line AA ′ of FIG.

6 is a sectional view taken along line BB ′ of FIG.

FIG. 7 is an explanatory view of assembly of a shielded tape electric wire according to a conventional example.

FIG. 8 is an explanatory view of assembly of a shielded tape electric wire according to a conventional example.

FIG. 9 is a perspective view of a shielded tape electric wire according to a conventional example.

FIG. 10 is a perspective view of a shielded tape electric wire according to another embodiment of the conventional example.

[Explanation of symbols]

 1,11 …… Shielded tape electric wire 2 ………… Conductor wire 3,4 ………… Insulating tape 5,6 ………… Shielding layer 2A ………… Drain wire

Claims (1)

[Scope of utility model registration request] 1. A tape electric wire in which an insulating tape is adhered to and integrated with upper and lower surfaces of a plurality of conducting wires arranged in parallel in a longitudinal direction, and a shielding layer made of a thin film formed of a conductive member on the surface of the insulating tape. Shielded tape electric wire characterized by having