JPH02253584A - Connecting method for insulating wire core of multicore cable and connector terminal - Google Patents

Abstract

PURPOSE:To make the connecting work easy and secure and to realize the automation of work by making insulating wire core insert into plural grooves of a plate-form base material and line up, cutting the tips of projections, applying a twisting to the collective conductors, and soldering them to the connector terminal. CONSTITUTION:The terminal sheath of a multicore cable 1 is torn off to expose insulating wire cores 3, the wire cores 3 are inserted to grooves 4 at the positions responding to the connector terminal of a plate-form basic member 5 and lined up, and the tips are cut off to set in the length b. Then, only the insulating coverage is cut off to form the exposed part c, friction sleeves and the like are moved parallel each other to twist the exposed part c, and the exposed part c is cut in a specific length. By inserting the exposed part in a sleeve 9 housing a cream solder 10 of a connector 8 in such a condition and heating, the exposed part c is solder-connected to the connector terminal easily and securely, the connecting work can be automated, and an error connection can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a method for connecting an insulated wire core of a multi-core cable to a terminal of a connector by soldering.

(Prior Art) Conventionally, soldering has been commonly used as a method for connecting the insulated cores of multi-core cables to connector terminals of electrical and electronic equipment because the necessary mechanical strength can be easily obtained. ing.

In this method, first, the insulation coating at the end of each insulated wire core of a multi-core cable is peeled off to expose the collective conductor, and while this exposed part is in contact with the terminal of the connector to be connected, a preliminary solder is applied using cream solder etc. Soldering is applied and then heated to a predetermined temperature to weld.

(Problem to be solved by the invention) However, as equipment becomes more complex and has higher performance, the number of insulated wire cores tends to increase. In addition, the insulation coating must be stripped off, the appropriate connector terminals must be selected and soldered individually, and the work must be done with great care so as not to make mistakes with the wire cores to be connected. There was a problem with extremely bad sex.

In addition, the collective conductors used in this type of multi-core cable are very thin, have a coarse twist pitch, and lack rigidity, so twisting must be added to the collective conductors during soldering to give them rigidity. Not only that, but this was also a major cause of poor workability.

The present invention has been made to solve these conventional problems, and includes removing the insulation coating, adding twist to the collective conductor,
The purpose of this invention is to provide a method for connecting an insulated wire core of a multi-core cable and a connector terminal, which enables pre-soldering and other steps to be performed on multiple wire cores at once, thereby significantly improving workability. do.

[Structure of the Invention] (Means for Solving the Problems) A method for connecting an insulated wire core of a multi-core cable and a connector terminal of the present invention includes connecting an insulated wire core of a multi-core cable to a connector in which terminals are arranged in multiple stages. (A) each of the grooves of the wire core alignment plate in which a plurality of grooves into which the insulated wire cores are fitted are formed on both sides of the plate-like base material in correspondence with the positions of the terminals of the connector; CB) cutting the tips of each of the protruding insulated wire cores at the same position in each row to determine the protruding length; (C) cutting the insulation coating of the insulated wire core at the same position in each row so that the tip remains and shifting it toward the tip to expose the collective conductor; (D) the step of exposing the collective conductor; (E) adding twist to the exposed portion of the collective conductor in each row by sandwiching the rows of insulation coatings shifted to the side between friction plates and moving each friction plate in the opposite direction; (F) cutting and removing the tips of the insulated wire cores in each row, leaving exposed parts of the collected conductors; The method is characterized by a step of bringing them into contact with each other and soldering them.

(Function) In the present invention, each groove of the wire core alignment plate is provided with a plurality of grooves into which the insulated wire cores are fitted, corresponding to the positions of the terminals of the connector, on both sides of the plate-like base material. Make each insulated wire core protrude to a required length, fit and fix, align the protruding length of each insulated wire core in each row, and expose the collective conductor.
Since twist is added to the collective conductor and soldered to the terminals of the connector, the work is easy and automation is possible, which significantly improves productivity.

(Example) Next, examples of the present invention will be described.

In the present invention, as shown in FIG. 1, first, the sheath 2 at the end of the multi-core cable 1 is stripped off by a required length to expose the multi-core insulated wire core 3.

Next, these insulated wire cores 3 are placed on a wire core alignment plate 5 having a plurality of grooves 4 formed on both sides of a flat base material made of hard plastic or metal to correspond to the arrangement of the terminals of the connector to be connected. Each insulated wire core 3 is fitted into each of the grooves 4 so as to protrude from each groove 4 by a required length a, and is fixed by a holding plate (not shown) or other arbitrary holding means (A).

Next, as shown in FIGS. 2 and 3, the insulated wire core 3
A fixed blade 6a having the same outline as the wire core alignment plate 5 is inserted between the rows from the tip side, and movable blades 6b of a corresponding shape arranged on both sides of the insulated wire core 3 are crossed to intersect the insulated wire core. The tip portions of the insulated wire cores 3 are cut in one operation, leaving a required length b of the insulated wire cores 3, so that the protruding lengths of the insulated wire cores 3 from the wire core alignment plate 5 are made equal (B).

Furthermore, after opening the fixed blade 6a and the movable blade 6b and moving them forward by a predetermined distance, the movable blade 6b is brought close again so that only the insulation coating of the insulated wire core 3 is cut. It is moved back as shown to expose the collective conductor 7 by a predetermined length C (C).

Next, instead of the fixed blade 6a and the movable blade 6b, as shown in FIG. Other friction plates 8b are arranged on both sides of 3, and these friction plates 8a,
The insulated wire core is held between the wires 8b. Then, these friction plates are moved in parallel in opposite directions to displace the tip portion of the insulated wire core 3 and twist is applied to the collective conductor 7 (D).

Thereafter, the tip portion is removed using the fixed blade 5b and the movable blade 5b, leaving the exposed collective conductor 7 (E
).

After that, cream solder 10 is put into the sleeve 9 of the connector 8 to be connected, and the twisted portion of the collective conductor 7 of each insulated wire core 3 is inserted into this sleeve 9, and heated while maintaining this state. The cream solder 9 is melted to complete the connection (F).

Thereafter, if necessary, the core alignment plate 5 is removed and an insulating cover is fitted around the outer periphery for use.

In the above embodiment, an example was explained in which the insulated wire cores to be connected are arranged in two rows, one above the other. However, the present invention is not limited to such an embodiment, and can be applied to connectors arranged in three or more rows. It is also applicable to the connection of

In addition, each of the above steps can be easily performed except for the step of fitting the insulated wire core to the wire core alignment plate 5, since the lengths such as a to c are constant and the operation of the cutter is simple. can be automated, and automation can therefore significantly increase productivity.

[Effects of the Invention] As explained above, according to the method of the present invention, the multi-grooves of the core alignment plate in which a plurality of parallel grooves are formed on the surface of the base material in correspondence with the terminals of the connector to be connected. , make each insulated wire core of the cable protrude, fit and fix, align the protruding length of each insulated wire core in each row, expose the collective conductor, add twist to the collective conductor, and connect the terminal of the connector. Since soldering is performed, the work is easy, automation is possible, and productivity can be significantly improved, and erroneous connections can be prevented.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the state in which the insulated wire core is fitted into the groove of the wire core alignment plate, Fig. 2 is a front view showing the fixed blade and the movable blade, Fig. 3 is a side view thereof, and Fig. 4 5 is a side view showing a state in which the collective conductor is exposed, FIG. 5 is a front view showing a state in which twist is applied to the collective conductor, and FIG. 6 is a side view showing the state of soldering. 1...Multi-core cable 2...Sheath 3...Insulated wire core 4...Concave groove 5 ......Core alignment plate 6a... Fixed blade 6b... Movable blade 7... Collective conductor 8a, 8b... ...Friction plate 9...Sleeve 10...Cream solder No. 30

Claims (1)

[Claims] A method for connecting an insulated core of a multi-core cable to a connector in which terminals are arranged in multiple stages, including: (A) having both sides of a plate-like base material correspond to the positions of the terminals of the connector; a step of fitting and fixing each insulated wire core of the cable by protruding a required length into each of the grooves of the wire core alignment plate in which a plurality of grooves into which the insulated wire cores are fitted are formed; (B) (C) Cutting the tips of each of the protruding insulated wire cores at the same position in each row to make the protruding lengths uniform; (D) sandwiching the row of insulation coatings shifted toward the tip side between friction plates, and moving each friction plate in the opposite direction. a step of adding twist to the exposed portion of the collective conductor in each row, and (E) a step of cutting and removing the tip end side of the insulated wire core in each row, leaving the exposed portion of the collective conductor to which the twist has been added. (F) An insulated wire core of a multi-core cable, characterized in that the exposed portions of the collective conductor are brought into contact with the terminals of the connector to be connected at once, respectively, and soldered. and how to connect the connector terminals.