Manufacturing Method of Flat cable and wire harness
applicationAt present, it is widely used in the connection between the print head of various printers and the motherboard, the signal transmission and board connection of plotters, scanners, copiers, speakers, LCD appliances, fax machines, various DVD players and other products. In modern electrical equipment, it is almost nowhere.
The commonly used models are as follows:
Type A: The two ends are connected and the reinforcing plate is pasted on the insulating tape;
Type B: Cross the reinforcing plate and paste it directly on the insulating tape;
Type C: The reinforcing plates at both ends are directly pasted on the conductor;
Type D: Cross the reinforcing plates at both ends and paste directly on the conductor;
Type E: one end of the reinforcing plate is pasted on the insulating tape, and the other end is directly soldered;
Type F: The reinforcing plates at both ends are directly attached to the insulating tape, and the inner half is peeled off;
Type G: Direct soldering at both ends.
FFC technical parameters:
Number of conductors N: the number of copper conductors in the cable;
Pitch P: the distance between the center lines of two adjacent conductors;
Margin M: The distance between the center line of the outermost conductor and the edge of the cable:
Full pitch TP: the distance between the center lines of the outermost two conductors, TP=P*(N-1);
Total width W: the distance between the two edges of the cable, W=P*(N+1);
Total length TL: the distance between the two ends of the cable;
Insertion thickness TT: the thickness of the two connecting ends of the cable;
Provided are a flat cable capable of easily attaching a connector to an end thereof and a wire harness provided with the flat cable. The wire harness (1) is provided with a connector (2) and a flat cable (3). The connector (2) is provided with a connector housing (4) and a female terminal (5). The flat cable (3) is provided with: Multiple wires (14); and elongated weft wires (15). The female terminal (5) is attached to the end of the wire (14). The latitude line (15) is set with: Intersections (15a, 15c), the intersections (15a, 15c) are perpendicular to the multiple wires (14) and are arranged at the multiple wires (14) and are raised and dropped in a certain regularity; And parallel portions (15b, 15d, 15e), the parallel portions (15b, 15d, 15e) are continuous with the intersections (15a, 15c) and are connected to the ends positioned in the plurality of electric wires (14) The wires (14a, 14b) overlap. Adjacent electric wires (14) are arranged with gaps therebetween, and adjacent intersections (15a, 15c) of the weft wires (15) are arranged with gaps therebetween.
Technical fieldThe present invention relates to a flat cable having a plurality of electric wires arranged in various machines, and a wire harness provided with the flat cable.
In an electrical machine such as a vehicle as a moving object, a wire harness is arranged for electrically connecting various electronic devices to each other. In some cases, the wiring harness includes: In the flat cable, a covering part made of an insulator and a connecting part made of an insulator are integrated. The flat cable is formed in a flat shape, and each covering portion covering each conductor has the same diameter and is arranged parallel to each other at regular intervals; And, a connector that is attached to the end of the conductor of the flat cable.
The above-mentioned flat cable is manufactured by integral extrusion molding in such a way that an insulator made of polyolefin series resin or the like is continuously extruded around a conductor arranged in parallel and covers the conductor. Therefore, when the number of conductors, the diameter of the conductor, or the width of the connection portion of the insulator changes, it is necessary to provide a new mouthpiece for extrusion molding. Therefore, the increase in the number of products hinders the reduction of production costs.
The present invention proposes a flat cable for integrating conductors of various shapes without increasing the production cost.
Flat cables include: multiple coated wires; A band-shaped reinforcing member for bundling the plurality of covered electric wires; And, a wire for sewing the reinforcing member to fix the plurality of covered electric wires to each other.
Each covered electric wire is defined by a conductor and a covering part covering the conductor, and is formed in a circular cross-sectional shape. The covered electric wires are spaced apart from each other and arranged in parallel. The plurality of reinforcing members are provided to be spaced apart from each other in the longitudinal direction of the covered electric wire and to be parallel to each other. The longitudinal direction of the reinforcing member is perpendicular to (intersects) the longitudinal direction of the covered electric wire. The reinforcing member overlaps the plurality of covered electric wires.
In the flat cable shown, by bundling the plurality of covered electric wires with the reinforcing member and the wire, the plurality of covered electric wires are fixed in parallel to each other. In addition, by appropriately changing the wire diameter and number of the covered electric wires using the reinforcing member and the wire bundle, conductors of various shapes can be integrated without increasing the production cost.