Flexible flat cable

Abstract

The invention discloses a flexible flat cable, which comprises an insulation layer and a plurality of wires arranged side by side. The flexible flat cable is provided with a first wire bending portionand a second wire bending portion. The sections from the two wire bending portions to the two ends of the flexible flat cable are parallel end portions. Included angles are formed between a part of or all of wires in the first wire bending portion and the second wire bending portion and wires in the parallel end portions. Wires between the first wire bending portion and the second wire bending portion are divided into a plurality of wire units. Each wire unit comprises a plurality of wires. The distance between the nearest two wires in two adjacent wire units is larger than the distance between the wires in a single wire unit. The cross section of the wires in the first wire bending portion and the second wire bending portion and between the two wire bending portions is circular, and thecross section of the wires in the parallel end portions is flat rectangle. The flexible flat cable is helpful for production realization, improves product production yield rate and ensures product electrical performance stability.

Description

technical field [0001] The invention relates to a flexible cable, in particular to a flexible flat cable. Background technique [0002] Flexible flat cable (full name in English: Flexible Flat Cable, English abbreviation: FFC) is a new type of multi-core cable that can arbitrarily choose the number of wires and the spacing between adjacent wires. It has the characteristics of easy bending, thin thickness, and small wiring space. Advantages, suitable for electrical connection between mobile electrical equipment in harsh environments such as power generation, metallurgy, chemical industry, and ports. The basic structure of the flexible flat wire includes upper and lower layers of insulating film and several flat wires arranged parallel to each other at a certain distance between the two layers of insulating film. In order to reduce the space occupied by the cable, improve the versatility, and reduce the probability of short circuit itself. The Chinese patent with the publica...

AI Technical Summary

Problems solved by technology

Since the bending part is formed by pulling the conductors parallel to the left and right sides through the production device, the distance between the conductors on the parallel ends is controlled by the wire groove, and the width of the wire groove is determined according to the width of the flat cross-section conductor, but the flat cross-section conductor It is formed by calendering of a circular cross-section conductor, so the diameter of the circular cross-section conductor is smaller than the width of the flat cross-section conductor. The circular cross-section conductor can swing in the wire groove, and it is easy to cause unequal spacing between the conductors on the parallel ends when the conductor is pulled. Problems that affect product yield and also affect the electrical performance of flexible flat cables

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