JPH0113169B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a tape electric wire in which a stranded conductor sandwiched between a pair of tapes is partially coated with metal such as plating.

Conventionally, as conductors for tape electric wires, solid wires, stranded wires, bulk stranded wires, flat wires, and the like have been used. These conductors generally require the following conditions.

(a) Excellent solderability and corrosion resistance.

(b) In the mounting stage, it is often used by bending it, so it must have sufficient plasticity.

(c) During use, the lead part must be easy to handle because it is often inserted into the insertion hole of the board or the desired location of the connector.

Among these conditions, (a) solderability and corrosion resistance can generally be improved by plating the conductor. However, when plating is applied, not only solid wires and rectangular wires, but also twisted wires, the flexibility of (b) becomes considerably worse, as is clear from the conventional tape wires using all-in-one stranded wires. . In other words, the flexibility of the tape electric wire depends on the type of tape used, the manufacturing method, etc., but it is greatly influenced by the flexibility of the conductor itself. For this reason, in order to control the flexibility of a wire stranded with plating all at once, it is sufficient to control the amount of plating attached, but this is a rather troublesome problem, and it is difficult to obtain the appropriate amount of adhesion. It is extremely difficult.

On the other hand, for ease of handling, it is preferable for this part to be solid and solid.In particular, in the case of stranded wires, since they can unravel and spread, it is better to harden them by plating them all together for easier handling. , convenient.

The present invention was made in view of the current situation, and it is possible to obtain sufficient flexibility, which is an inherent characteristic of the stranded conductor, in a tape electric wire using a stranded conductor, and to Apply partial metal coating (e.g. plating, etc.) to appropriate parts of the stranded conductor.
The object of the present invention is to provide a method for manufacturing a tape electric wire which is improved in handling properties during lead-out, as well as in solderability and corrosion resistance.

Hereinafter, embodiments of the tape electric wire according to the present invention will be explained in detail with reference to the drawings.

Fig. 1 shows an example of a tape electric wire obtained by the method of the present invention, which is a part whose entire length is made the length of the product from the beginning and which has been subjected to lead-out processing in advance. Another example will be shown in which a long tape electric wire obtained by the method of the invention is obtained.

In either case, a plurality of stranded wire conductors 3 extending parallel to each other are sandwiched between the pair of upper and lower tapes 1 and 2, and in the case of FIG. For example, a metal covering portion 4 is provided, which is made of a portion that is plated all at once by a sparrow. In this case, a portion of the metal covering portion 4 in the longitudinal direction is arranged within the insulator on the tapes 1 and 2 side.

As a result, a part of the hard metal coating part 4 in the longitudinal direction is held by the tapes 1 and 2, and the mechanical properties
In particular, the fatigue fracture resistance of the conductor due to stress concentration due to bending is improved, and the conductor at the lead-out portion has the following advantages. (1) Improved handling during pick-up work. (2) The flexibility (rigidity) of the all-plated part (metal coating part) of the lead part is improved, making it easier to insert it into a desired location of the connector, for example, and improving the ease of insertion and removal. Furthermore, it has the following characteristics: (3) it does not unravel, which is a characteristic of batch-plated wire, and (4) it does not require preliminary soldering.

In the case shown in FIG. 2, the length of the stranded conductor 3 at appropriate intervals in the longitudinal direction is the sum of the length of the lead-out portion and the length of the portion sandwiched between the two tapes. For example, as in the above-mentioned case, a metal covering portion 4 is provided, which is made of a portion plated together by a plated plate or the like. In this case, it is cut to the required length during use, and the metal covering part 4 located at both ends becomes the opening part (of course, as mentioned above, a part of the metal covering part 4 is cut into a pair of tapes 1, 2) Remove unnecessary tape parts 1 and 2. When the tapes 1 and 2 are transparent (generally, many are transparent), they can be cut while looking through them.

Next, an example of the method for manufacturing a tape electric wire according to the present invention will be explained. For example, FIGS.
It can be manufactured using the apparatus shown in the figure. That is, the pair of upper and lower tapes 1,
A flux coating device 7, a plating device 8, and a plating liquid squeezing tool 9 are sequentially installed during the travel of the stranded wire conductor 3 before being sandwiched between the conductors 2 and 2, and the flux coating device 7 and the plating device 8 are operated intermittently. When activated, the flux and the plating liquid are deposited on the flux to a length approximately corresponding to the lead-out portion, and a large number of independent metal coating portions 4 are formed on the stranded wire conductor 3 at intervals in the longitudinal direction of the stranded wire conductor. be done.

In this case, the flux coating device 7 and the plating device 8 used may be, for example, a flow type device in which the flux and plating liquid are intermittently spouted up and deposited on the conductor 3.

The intermediate material of the tape electric wire manufactured in this way is cut at an arbitrary longitudinal intermediate position of the metal coating part 4, and then the ends of the tapes 1 and 2 are cut into the metal coating part 4.
Cut and remove the opening part 3 at an intermediate position in the longitudinal direction.
form a.

As explained above, according to the method for manufacturing a tape electric wire of the present invention, after a plurality of parallel stranded conductors 3 are intermittently provided with a large number of independent metal coating parts 4 in the longitudinal direction of the stranded conductors, , sandwiching each stranded wire conductor with a metal coating between a pair of tapes 1 and 2,
Next, the stranded conductor sandwiching tape is cut at a longitudinally intermediate portion of the metal sheathing portion 4, and then the ends of the tapes 1 and 2 are removed at a longitudinally intermediate position of the metal sheathing portion 4 to form an opening portion 3a. Therefore, it is possible to easily manufacture a tape electric wire having metal covering portions 4 extending to between the pair of tapes 1 and 2 on the lead portions 3a at both ends.

[Brief explanation of drawings]

1 and 2 are perspective views showing examples of tape electric wires obtained by carrying out the present invention, FIG. 3 is a schematic explanatory view showing an example of the method for manufacturing the tape electric wire according to the present invention, and FIG. The figure is a schematic perspective view of each device used in the above manufacturing method. 1 and 2 are tapes, 3 is a twisted wire conductor, 3a is an opening portion, and 4 is a metal coating portion.

Claims (1)

[Claims] 1 After providing a plurality of parallel stranded conductors 3 with a large number of independent metal sheathing parts 4 intermittently in the longitudinal direction of the stranded conductors, each stranded conductor with metal sheathing is attached to a pair of tapes 1 and 2. Then, the stranded conductor sandwiching tape is cut at the longitudinal midpoint of the metal sheathing section 4, and then the ends of the tapes 1 and 2 are removed at the midpoint of the longitudinal direction of the metal sheathing section 4 to open the tape. A method for manufacturing a tape electric wire, comprising forming a portion 3a.