JPH0261205B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for processing the fiber ends of a multi-core cable, and in particular, a multi-core cable suitable for use when connecting a large number of core wires of the multi-core cable in parallel in a horizontal row. The present invention relates to a method for processing cable core ends.

Generally, multi-core cables are used for internal wiring of devices such as computers or for wiring between devices.

By the way, in this multi-core cable, if the ends of the core wires are connected horizontally in parallel and at a constant pitch, it will be easier to connect to equipment.

Conventionally, processing of the ends of the core wire has been carried out by arranging the ends of the core wire on a flat plate, covering the ends with a fixing tape, and heat-sealing the outer sheath of the core wire and the fixing tape.

However, in such a conventional method, the operator must cover and heat the adhesive tape while temporarily fixing the arranged core wire ends, which tends to make the work complicated. The problem is that the spacing between the line terminals tends to be uneven. Furthermore, if the spacing between the core wire terminals is uneven, when connecting this core wire terminal to a connector, etc., the spacing between the connecting terminals of this connector and the spacing between the core wire terminals will not match, and the connection between the two will be interrupted. This can lead to problems that can become difficult.

The present invention was made in view of the above-mentioned conventional circumstances, and its purpose is to easily arrange the terminals of a large number of core wires at regular intervals, and to ensure that the arrangement state is maintained. An object of the present invention is to provide a method for processing the fiber ends of a multi-core cable that can be maintained.

The present invention will be described below based on an embodiment shown in the drawings.

First, the holding plate used to carry out the method of the present invention will be explained.

As shown in FIGS. 1 and 2, this holding plate 1 has terminals 2a of the core wires 2 inserted one by one onto a mounting surface 1a on which the terminals 2a of a large number of core wires 2 are placed. A large number of parallel grooves 3 are provided at intervals in the width direction, and the width L of these grooves 3 is set to a second width.
As shown in the figure, the basic configuration is slightly smaller than the outer diameter D of the core wire 2.

Next, to explain these details, the holding plate 1 is formed into a rectangular plate shape from a metal material such as steel or stainless steel, and one surface thereof serves as a mounting surface 1a. Placement surface 1
The groove 3 is formed in a.

A large number of grooves 3 are formed parallel to the short sides of the holding plate 1. Also, the width L of each of these grooves 3
is formed to be slightly smaller than the outer diameter D of the core wire 2, and the preferable groove width L is determined by the elasticity of the outer sheath of the core wire 2. For polyvinyl chloride, L=(0.9
~0.98)×D.

On the other hand, the depth l of the groove 3 is the outer diameter D of the core wire 2.
The preferred depth is about 1=(0.8 to 0.85)×D.

Next, a method of processing the core ends of a multi-core cable using this holding plate 1 will be explained step by step.

The holding plate 1 is placed below the ends 2a of a large number of core wires 2, with the arrangement direction of the grooves 3 and the length direction of the core wires 2 being perpendicular to each other, as shown in FIG.

The ends 2a of the core wires 2 are fitted one by one into the grooves 3 of the holding plate 1, and arranged in a horizontal line as shown in FIG. In this state, the core wire 2 is reliably locked in the groove 3 due to the compression of the outer sheath, which generates a moderate amount of friction between the outer sheath and the groove 3 . Further, as shown in FIG. 2, a portion of the cable jacket is made to protrude from the groove 3.

An adhesive tape, for example, a heat-sealing tape T, is brought into contact with the upper part of the jacket surface of each core wire 2 arranged on the holding plate 1, and these are heat-sealed as shown in FIG. For example, when the outer sheath of the core wire 2 is made of polyvinyl chloride, the same polyvinyl chloride is preferably used as the heat-sealing tape.

As shown in FIG. 6, by applying ultrasonic vibrations using an ultrasonic welding device H, the contact surfaces of the thermal welding tape T and the jacket of the core wire 2 are fused.

When the holding plate 1 is removed from the core wire 2, the state shown in FIG. 7 is completed.

Note that the fusion between the heat fusion tape T and the outer sheath of the core wire 2 is not limited to the above-mentioned ultrasonic fusion method, but may also be performed by other electrical fusion methods or fusion methods using a gas burner or the like. It is possible to implement.

As described above, the method for processing the fiber ends of a multi-core cable according to the present invention provides the following effects.

(1) By fitting the ends of the core wires into the grooves of the holding plate, a moderate amount of friction is generated between the outer sheath of the core wires and the grooves, and each core wire can be arranged reliably and easily. .

(2) When integrating the core wires, each core is securely held by the holding plate as described above, so each core is Each operation can be performed easily without the wires coming apart.

(3) By matching the pitch between the grooves of the holding plate to the pitch of the connection terminals of the connector to which the multi-core cable is connected, the connection between the two can be reliably and easily made.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a retaining plate used to carry out the method for processing the fiber ends of a multi-core cable according to the present invention, and FIG. 2 is a main part for explaining the dimensional relationship between the retaining plate and the core wire. An enlarged front view, FIG. 3 is a perspective view showing a state in which a retaining plate is placed below the core end of a multi-core cable, and FIG. 4 is a front view showing a state in which the core end is fitted into the groove of the retainer plate. 5 is a front view showing the state in which the fusion tape is brought into close contact with the core wires, FIG. 6 is a front view showing the state in which the holding plate on which the core wires are arranged is attached to the ultrasonic fusion device, and FIG. The figure is a perspective view of a multi-core cable with integrated core wire terminals. 1... Holding plate, 2... Core wire, 2a... Terminal, 3
...Groove, T...thermal adhesive tape, H...ultrasonic welding device.

Claims (1)

[Claims] 1. The terminal ends 2a of a large number of core wires 2 are fitted into each parallel groove 3 of the holding plate 1 so that a part of the outer sheath of the core wires protrudes and are arranged in a horizontal line, and then the fixing tape T is applied. A method for processing the fiber ends of a multi-core cable, characterized in that the adhesive tape and the outer sheath of each core wire are integrally fixed by closely contacting the outer sheath surface of the core wires protruding from each groove.