KR100288813B1 - Electric wire processed article and method of manufacturing the same - Google Patents

Abstract

The present invention has been made in an effort to provide a wire processed article having a terminal processing treatment in order to efficiently connect a plurality of micro coaxial cables used for liquid crystal display of a personal computer. As a plurality of coaxial cables, a plurality of coaxial cables are cut to length, and the outer conductor 1 near the end is exposed, and the outer conductor 1 is fixed to the ground bar 2 at a predetermined pitch. Further, an insulator 5 on the end side is exposed, and a plurality of these insulation cores are fixed to the plastic tape 6 at a predetermined pitch, and the insulation layer between the ground bar 20 and the plastic tape 6 is parallel to the cable. The center conductor 7 is exposed by moving.

Description

ELECTRIC WIRE PROCESSED ARTICLE AND METHOD OF MANUFACTURING THE SAME}

The present invention relates to an ultra-fine coaxial cable for high speed transmission, and more particularly, to a wire processed product and a method for manufacturing the same, characterized in that terminal processing is performed to be suitable for a liquid crystal display of a personal computer.

BACKGROUND ART Liquid crystal displays used in personal computers and the like have been required to speed up image signals in order to improve the number of pixels and the number of colors. Therefore, a coaxial cable using a fluorine resin having a low dielectric constant is used for the insulator.

In recent years, there has also been widespread use of notebook types, and personal computers are increasingly required to be smaller and lighter, cables are required to be wired in a narrow space, and matching of characteristic impedance is required with high precision. In order to meet these demands, it is necessary to reliably ground the outer conductor and connect the center conductor to a connector terminal or a circuit of a board of a predetermined pitch, especially for each of the cables of a dozen cores, in the cable connecting operation. Very troublesome.

1 is a view showing a state in which the outer shell of the end is moved parallel to the cable to expose the outer conductor by the winding and soldering two sets of ground bars to the outer conductor.

2 is a view showing the cross section of FIG.

3 is a view showing a state in which an insulator is exposed by removing an external conductor for each ground bar on the end side;

4 is a view showing a shape in which the plastic tape is thermally fused to an insulating core at an end and the pitch of the insulating core is fixed

FIG. 5 is a view showing a state in which a slit is inserted into the middle of the ground bar and the plastic tape and the center conductor is exposed by moving parallel to the cable in the direction of peeling the insulation.

6 is a view showing a wire-finished product finished by cutting both ends

7 is an enlarged view of the end of the finished product of the wire processed product

<Explanation of symbols for main parts of drawing>

1: outer conductor 2: ground bar

3: outer cover 4: adhesive tape

5: insulation 6: plastic tape

7: center conductor 8: solder

In order to carry out this connection work efficiently, a batch connection is performed by using a flat cable having a plurality of coaxial cables arranged at a predetermined pitch. However, as the coaxial itself is thinned, in a batch connection by flat cable, Problems such as the lack of strength of the connection portion appeared. Therefore, the present inventors have examined various measures, and provided the user as a wire-processed product which has been subjected to terminal processing according to the following procedure so as to facilitate the operation of the collective connection even in the case of an ultra-fine shaft, thereby making the connection work more efficient. It was found that it is possible to complete the present invention.

In addition, the procedure of the terminal processing in the present invention is as follows.

1) Arrange a plurality of coaxial cables at a predetermined pitch and fix the pitch with adhesive tape.

② Cut to a predetermined length.

(3) A slit is formed by using a laser beam near the end, and the sheath and copper-deposited fluoroester tape are moved parallel to the cable in the peeling direction to expose the transverse shield layer.

④ Fix two sets of ground bars (metal foil) to the transverse shield layer with solder.

⑤ Cut the horizontal winding shield by bending the cable up and down with the middle point of two sets of ground bars as the supporting point.

⑥ Remove the wind-winding shield layer at each end of the ground bar to expose the insulation layer.

⑦ Fix the pitch of each insulation core by heat-sealing plastic tape to the insulation layer.

⑧ Use a laser beam to form a slit in the other insulator between the other ground bar and the plastic tape.

⑨ Move the cutout at the end parallel to the cable in the direction of peeling to expose the center conductor.

단부 Cut the end side from the plastic tape.

Next, the end portion is immersed in the molten solder layer, and collective solder coating may be applied to the exposed center conductor of the twisted line. The adhesive tape may be peeled off to fix the pitch only between the ground bar and the plastic tape, and the other parts may be freed to increase the degree of freedom of wiring and the degree of freedom of use after wiring.

Embodiments of the present invention will be described below.

Seven twists of the tin-plated copper alloy wire with a center conductor of 0.03 mm ø are insulated by fluorine resin coating coated with a thickness of 0.06 mm, and a horizontal winding shield is performed with a tin-plated copper alloy wire with a wire diameter of 0.03 mm ø. Transverse winding shield was performed by tin-plated copper alloy wire of 0.03mm diameter wire, and copper-deposited polyester tape was wound around the copper-deposited surface inward to form a shielded layer. Winding was carried out, and the 12 microfiber shafts with an outer diameter of 0.33 mm were arranged in parallel at a pitch of 0.5 mm, and the pitch was fixed by sticking adhesive tapes on the upper and lower surfaces.

The tape-shaped cable obtained as described above was cut to a length of 180 mm, and slits were formed at each position of 15 mm from both ends by using a laser beam, and the adhesive tape, the outer shell and the copper-deposited polyester tape layer were collectively removed. Direction was moved parallel to the cable to expose the outer conductor (horizontal winding shield wire) formed by the transverse winding.

The exposed outer conductor 1 was sandwiched between two sets of width 1 mm and 0.5 mm thick tin-plated bronze bars from the top and bottom, and fixed as shown in FIGS. 1 and 2 by soldering. 1 is a plan view, and FIG. 2 is a sectional view.

Next, as shown by the arrow shown in FIG. 2, the cable was bent in the vertical direction with the vicinity of the boundary of the two sets of ground bars 2 as the supporting point, and the outer conductor 1 was cut off. And the outer conductor of the edge part of multiple core was collectively removed, and the insulator 5 was exposed as shown in FIG.

In the state which maintained the pitch of each insulator, the insulating film 6 was heat-fused as shown in FIG. 4, and the pitch was fixed. Next, a slit is formed in the insulator 5 between the insulating film 6 and the ground bar 2 using a laser beam, and as shown in FIG. 5, the side where the pitch is fixed by the insulating film. The center conductor 7 was exposed by moving parallel to the cable towards the end.

As shown in FIG. 6, the end portion was cut from the portion of the insulating film 6 having the pitch of the insulator fixed, and the terminal processing was completed to complete the wire-processed article which is easy to collectively connect.

7 is a perspective view of the wire processed article of the present invention completed. Moreover, the workability of collective connection can be further improved by immersing the edge part of this electric wire processed product in the solder bath, and performing solder coating on the exposed center conductor 7 of the twisted wire | line.

Moreover, by peeling off the adhesive tape, only the pitch of the edge part is fixed, and the other part can be freely grabbed, and the wire-processed goods which are convenient to use can be provided.

Since the end of the wire processed product of the present application is fixed at a predetermined pitch by the ground bar and the insulating tape, and the center conductor is exposed, it is easy to collectively connect the connector to the terminal and to collectively connect the board to the circuit. The reliability of the connection can be high, and the mechanical strength of the connection can be made sufficient. This is further strengthened by applying collective solder coating to the center conductor of the twisted line. In addition, since the external conductor is collectively conducted by the ground bar, it is easy to ground the external conductor. In addition, by peeling off the adhesive tape, only the end portion has a fixed pitch, and the degree of freedom of wiring and the degree of freedom of use after wiring can be increased.

Although the above is an effect by the wire processed article itself, the procedure for manufacturing this wire processed article also has the following characteristics.

In order to expose the outer conductor by transverse winding by moving the outer shell parallel to the cable, when forming a slit on the outer shell using laser light, the coaxial used herein is copper-deposited poly outside the outer conductor by the transverse winding. Since there is an ester tape layer, the insulator is not damaged by the laser light at this time.

In addition, two sets of ground bars can be soldered to the exposed outer conductors, and the outer conductors of the plurality of cores can be collectively removed together with the ground bars on the end side, which is very efficient.

Claims (4)

Cut a plurality of coaxial cables into lengths, cut them to a predetermined length, remove the sheath near the end to expose the outer conductor, fix it to a metal ground bar, and fix a predetermined pitch to the end of the ground bar. A wire processed product characterized by exposing the center conductor by removing the outer conductor, exposing the insulator core, fixing the insulator core to the plastic tape at a predetermined pitch, and then moving it equally to the cable in the direction of peeling the insulation of the end portion. The wire processed product according to claim 1, wherein a collective solder coating is applied to the exposed center conductor of the twisted wire. The wire processed product according to claim 1, wherein as the coaxial cable constituting the wire processed product, a coaxial cable made of a combination of a winding layer and copper-deposited polyester tape is used. A method for manufacturing a wire processed article according to claim 1, comprising the steps of fixing two sets of ground bars to an exposed outer conductor and collectively removing the outer conductor of a plurality of cores together with the ground bar on the end side. Manufacturing method.