JPH01185113A - Termination of flat cable - Google Patents

Abstract

PURPOSE:To perform sheath leaving work easily and safely, by applying fixing tapes at the opposite sides of sheath leaving section of round wires then cutting only insulation coating off, thereafter moving a cutter and forming a sheath. CONSTITUTION:A plurality of round wires 1 are arranged in parallel with intervals. At first, fixing tapes 21, 22 are applied at the opposite sides of a section where sheath is left, so as to secure the round wires 1. Then a cutter 3 is applied at the working section in order to cut only insulation coatings of the round wires 1 off. Thereafter, the cutter is moved as it is toward the tip of the round wires 1 and the insulation coatings are peeled and moved from the conductor 4 together with the fixing tape 22 thus forming a sheath. By such method, sheath leaving work can be performed easily even if a fixing tape having high tensile strength is employed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention involves applying a fixing tape to the end portions of a plurality of round electric wires arranged in parallel at intervals, so as to adjust the distance between the parallel arrangement of the round electric wires. The present invention relates to a method for processing a fixed end portion of a flat electric wire formed by holding the wire and pasting and fixing the same in a common manner so as to leave a sheath.

[Conventional technology]

Conventionally, multiple round electric wires of this type were connected parallel to each other at intervals.
In order to form connection terminals for flat electric wires where only the terminal parts arranged in parallel are fixed with fixing tape, the coated insulator of the round electric wires fixed by fixing tape while maintaining the mutual distance is used for fixing. Peel it off along with a part of the tape to expose the conductor of the round electric wire, and attach it to the tip of the stripped conductor.
In order to prevent conductor disturbance, so-called flat wire terminal sheath-retaining processing is carried out, in which a part of the fixing tape is peeled off and the sheath of the insulator remains.

Figures 4a and 4b show an outline of the processed end portion of the flat wire with a sheath remaining. FIG. 4a is a top view, and FIG. 4 is a front view, in which a plurality of round electric wires 11, four in the illustrated example, are arranged in parallel, and the terminal portions are fixed with a fixing tape of 2 degrees. At the end of the round conductor vA1, the covering insulator was torn in the direction of the tip of the conductor 4 along with a part of the fixing tape 22 at the end of the fixing tape 21, forming a sheath that remained at the tip of the conductor 4. It has a structure that prevents conductor disturbances.

FIGS. 5A to 5C are diagrams showing an example of a conventional method for processing a flat electric wire so that the end sheath is left (hereinafter referred to as prior art 1). In this example, four round electric wires 1 are arranged parallel to each other at intervals, and the intervals between the round electric wires are maintained at the terminal parts, and -
A fixing tape 2 is attached and fixed all together to form a flat electric wire. Attach the end of the flat wire fixed with fixing tape 2,
The pod leaving terminal processing is performed at the position of the pod leaving processing section 5 (FIG. 5a).

The coated insulator 11 of the round electric wire l is coated with the insulator 11 on the conductor 4 using the processing force 3 at the position of the sheath-remaining processing part 5.
Cut it together with the fixing tape 2 and tear it in the direction of the end indicated by the arrow (Fig. 5b).

At the tip of the conductor 4 of the round electric wire 1 which is peeled off by tearing off the covering insulator 11 along with a part of the fixing tape 2, the torn end of the fixing tape 2 is attached to the remaining part 2I of the fixing tape 2. □ and the covering insulator 11 form a sheath to prevent the ends of the conductor from being disturbed (Fig. 5C).
).

FIGS. 6a and 6b are diagrams showing another example of a conventional method for processing a flat electric wire by leaving an end sheath (hereinafter referred to as prior art 2). In this example, four round electric wires 1 are arranged parallel to each other at intervals, and the length required for leaving the sheath of the round electric wire 1 is attached to the end of the fixing tape 2. The fixing tape 2 is attached in the protruding state, and the round electric wires are fixed while maintaining the distance between them in parallel arrangement (FIG. 6a).

The round electric wire l protruding from the end of the fixing tape 2 is cut off at the position of the sheath-remaining processing part 5 by cutting off the covering insulator 11 of the round electric wire 1, tearing it toward the tip of the round electric wire 1, and cutting off the conductor 4. The covered insulator 11 is stripped and torn at the tip of the conductor 4.
is left as a sheath for each of the round electric wires 1, and the terminals are processed (FIG. 6b).

[Problem that the invention seeks to solve]

The conventional technique 1 shown in Fig. 5 is to leave the end sheath of a flat electric wire in place by sandwiching a round electric wire on both sides, one side on the insulation sheath, and the other side on the insulation sheath together with a fixing tape. After making a scratch with the metal processing blade, move the processing blade towards the end, tear the covering insulator and fixing tape, and place the torn covered insulator and fixing tape on the exposed tip of the conductor as a sheath. This is a method in which the sheath is left at the end and processed. However, since the method of Prior Art 1 uses a metal processing blade to tear the covered insulator and the fixing tape, if the tensile strength of the material of the fixing tape is high, processing is difficult, and the exposed conductor is removed. There is a problem that it may be damaged or broken.

When a fixing tape made of a material with high tensile strength is used, the processing method for leaving the end sheath of Prior Art 2 illustrated in FIG. 6 is applied. In other words, in the case of a flat electric wire formed with the extra length of the round electric wire protruding from the end of the fixed round electric wire aligned with fixing tape, the tensile strength is Can apply fixing tape for large materials. However, in the method of Prior Art 2, the covering insulator corresponding to the sheath remains at the tip of each round electric wire, and the round electric wires are not fixed all together, so the function of leaving the sheath is not fulfilled. I can't.

Furthermore, if a fixing tape made of a material with low tensile strength is used, there is a problem that the fixing part may bend or the ends of the flat electric wire fixed with the fixing tape may bend when being punched out into a connector.

[Means for solving problems]

The present invention solves the conventional problems and provides a method for processing a flat wire fixed with a fixing tape made of a material with high tensile strength so that the terminal sheath remains intact. A plurality of round wire ends are arranged in parallel at the ends of the shaped wires to be processed with sheaths remaining, and the round wire bodies on both sides of the sheath-remaining processing portion are sandwiched between the ends of the round wires, while maintaining the parallel arrangement spacing between the round wires. Fixing tape is attached to two places on the tip to fix the round electric wire, and the insulation insulation of the round electric wire arranged in parallel is cut at the middle part between the fixing tapes attached to the two places using machining force. and moving the processing force in the direction of the tip of the round electric wire together with the fixing tape attached to the tip to peel off the insulation covering of the round electric wire and strip the conductor,
It is characterized by a step of processing the end of the conductor so that the peeled insulator and sheath of the fixing tape remain at the tip of the conductor.

[For production]

The method of the present invention for processing flat electric wires with terminal sheaths left is to attach fixing tapes made of material with high tensile strength to both sides of the sheath-remaining part of the round electric wires, fix the round electric wires, and then Only the coated insulation of the round electric wire is cut using machining force,
The processing method moves the processing force toward the tip of the round wire to tear the insulation covering and strip the conductor, leaving it as a sheath on the tip of the conductor along with the fixing tape attached to the tip of the round wire. This eliminates the need to tear and pull the fixing tape made of material with high tensile strength, making it possible to easily and stably process the sheath while leaving it in place.There is also no bending of the fixing part, making it easy to insert into and remove from connectors and wiring board holes. It doesn't bend. Examples will be described below based on the drawings.

〔Example〕

The method of processing the flat electric wire end with a sheath remaining according to the present invention will be explained with reference to FIGS. 1a and 1b and 2a and 2b. FIG. 1 shows a top view, and FIG. 2 shows a front view.

A plurality of round electric wires 1, in this example four round electric wires 1, are arranged parallel to each other at intervals, and a fixing tape 21 and a fixing tape 2□ are attached to the terminal portions at two locations on both sides of the sheath-remaining processed portion. are attached and fixed together while maintaining the interval between the round electric wires to form a flat electric wire 10.

Fixing tape 2. At the center between the fixing tape 2 □, cut the coated insulator 11 of the round electric wire 1 with processing force 3, and tear it while it is fixed with the fixing tape 2 □ in the direction of the tip of the round electric wire vA1. The conductor 4 of the round electric wire 1 is pulled out, and the torn insulator 11 of the round electric wire 1 remains at the tip of the conductor 4, which is commonly fixed with the fixing tape 2□. Processing is done leaving the sheath intact.

FIGS. 3a to 3f show some embodiments of the method of processing the flat electric wire end sheath leaving a sheath according to the present invention.

FIGS. 3a and 3b show Example 1, in which a tape made of a material with high tensile strength is used as the fixing tape 21 to be attached to both sides of the sheath-remaining part of the round electric wire 1 in which the conductor 4 is coated with a covered insulator 11. A fixing tape 22 with low tensile strength is attached to the part of the round electric wire 1 sandwiched between the fixing tapes 21. At the part where the fixing tape 22 is pasted, the covering insulator 11 of the round electric wire 1 is cut with processing force 3, and the conductor 4 is stripped by pulling in the direction of the tip of the torn round electric wire 1. A fixing tape 21 and a fixing tape 22 are attached to the tip of the fixed round electric wire 1, so that the tip of the coated insulator 11 of the fixed round electric wire 1 remains, and the end is left in a sheath. Since the fixing tape 22 is made of a material with low tensile strength, it can be easily torn or stretched by the processing force 3.
It can be carried out reliably, without damaging the conductor 4, and with a stable sheath-retaining end fixed with a fixing tape with high tensile strength, it is possible to perform the end sheath-retaining process of a flat electric wire. .

Figures 3c and d show Example 2, in which the conductor 4 is coated with an insulator 1.
A fixing tape 22 having a low tensile strength is commonly attached to the ends of the round electric wires l subjected to step 1, and the round electric wires arranged in parallel are fixed while maintaining the mutual spacing, A fixing tape 21 having a high tensile strength is laminated on the fixing tape 22 and fixed at two places on both sides of the round electric wire 1 with the sheath-remaining processed part sandwiched therebetween. Fixing tape 2 on round electric wire 1
In the central part of the sheath-remaining part where only 2 is pasted, the covering insulator 1 of the round electric wire work is cut together with the fixing tape 22 using a working force 3, and the torn round electric wire I is pulled and peeled off in the direction of the tip. Strip the conductor 4 and attach a fixing tape 21 with high tensile strength to the fixing tape 22 at the tip of the conductor 4.
Coated insulator 1 of round electric wire 1 laminated and fixed
The tip of No. 1 remains and the sheath of the terminal is processed. Ease and reliability of the pod leaving process in Example 2,
Furthermore, the stability of the finished sheathed end defined by the fixing tape with high tensile strength is the same as in Example 1.

3e and f show Example 3, in which a fixing tape 22 with a low tensile strength is commonly attached to the end of a round conductor vAl in which a conductor 4 is coated with an insulator 11, and A thin N23 hardened material is provided on the fixing tape 22 to provide strength, and the round wires arranged in parallel are fixed while maintaining the mutual spacing, and both sides of the round wire with the sheath-remaining processed part sandwiched therebetween. A fixing tape 21 having a high tensile strength is laminated on the hardening material thin layer 23 and fixed at two locations. Round electric vA
1, the fixing tape 22 reinforced with a thin layer of hardening material 7123 is pasted on the sheath-remaining part, and the coating insulator of the round electric wire 1 is attached with the fixing tape 22 reinforced with a thin layer of hardening material 23 using processing force 3. The conductor 4 is stripped by cutting and pulling toward the tip of the torn round electric wire 1, and the fixing tape 21 with high tensile strength is laminated on the tip of the conductor 4 on the fixing tape 22 reinforced with hardening material NN23. The end portion of the coated insulator 11 of the round electric wire 1 that has been pasted and fixed remains, and the terminal sheath is left intact. In this Example 3, the ease and reliability of the sheath leaving process and the stability of the sheath leaving process end fixed with a fixing tape with high tensile strength are the same as in Example 1, and in addition, the fixing tape 22 By reinforcing the hardening material thin layer 23, the stability against bending of the processed end of the sheath and bending when inserted into and removed from a connector or wiring board hole is further improved.

Note that the fixing tape 22 with low tensile strength in Examples 1 to 3 may be, for example, an adhesive, a hot melt agent,
Soft PVC or the like is used, and as the fixing tape 21 with high tensile strength, for example, polyester or hard PVC is used, and the hardening material thin N23 in Example 3 is made of a polyester layer. Further, the interval between the portions of the sheath-remaining processed portion sandwiched between the fixing tapes 21 may be equivalent to a gap of about 1 mm.

〔Effect of the invention〕

As explained above, the method of processing a flat electric wire with a sheath remaining at the end of the round electric wire is performed by pasting fixing tape made of a material with high tensile strength on both sides of the sheath-remaining part of the round electric wire to fix the round electric wire. The insulation of the round wire between the fixing tapes is then cut using processing force, and the processing force is moved toward the tip of the round wire to tear the insulation and strip the conductor, cutting the tip of the round wire. Since this is a processing method that leaves a sheath on the tip of the conductor along with the fixing tape attached to the conductor, there is no need to tear and pull the fixing tape, which has a high tensile strength, and the process of leaving the sheath can be easily and stably performed. In addition, the fixing part does not bend and does not bend when inserted into or removed from a connector or wiring board hole, which is highly effective.

[Brief explanation of the drawing]

Figures 1a, b and 2a, b are diagrams illustrating the flat wire end sheath-remaining processing method of the present invention, and Figures 3 a to f are various methods of flat wire end sheath-remaining processing methods of the present invention. FIGS. 4a and 4b are schematic diagrams of the structure of the end portion of a flat electric wire with a sheath remaining, and FIGS. Figures 6a and 6b are explanatory diagrams of Example 2 of a conventional method for processing a flat electric wire with a sheath remaining. 1... Round electric wire, 2, 21.22. L, 2t...
Fixing tape, 23... Thin layer of hardening material, 3... Machining blade, 4... Conductor, 5... Sheath remaining processed part, 10...
Flat electric wire, 11... Insulator patent applicant Sumitomo Electric Industries Co., Ltd. agent Patent attorney Tamamushi Kugobe Explanatory drawing of the flat electric wire terminal sheath leaving processing method of the present invention 1
Diagram 2 for explaining the flat wire terminal sheath leaving processing method of the present invention
Fig. 3 Illustrations for explaining various embodiments of the method of processing flat electric wire ends with sheaths remaining Fig. 3 Schematic drawings of the ends of flat electric wires with sheaths remaining Fig. 4 Explanatory drawings of Example 1 of processing method for flat electric wires with sheaths remaining Fig. 5 Flat type Explanatory diagram of wire sheath leaving processing method example 2 No. 6 @

Claims (1)

[Scope of Claims] A fixing tape is commonly attached and fixed to the terminal portions of a plurality of round electric wires arranged in parallel at intervals while maintaining the parallel arrangement spacing between the round electric wires. form a flat electric wire,
The peeled fixing tape and coated insulator are peeled off together with the fixing tape and the conductor is stripped of the covered insulator of the round electric wire at the terminal end where the fixing tape of the flat electric wire is pasted and fixed. In a method for processing a flat electric wire to leave a sheath at the end thereof, a plurality of round electric wire ends arranged in parallel with the end of the flat electric wire to be processed to leave a sheath are arranged in parallel with each other. Maintaining the distance, fix the round wire by attaching fixing tape to two places on the main body and the tip of the round wire on both sides of the sheath-remaining part, and fix the round wire between the fixing tapes attached to the two places. The coated insulator of the round electric wires arranged in parallel is cut with a processing blade in the middle part of the round electric wire, and the processing blade is moved along with the fixing tape attached to the tip of the round electric wire in the direction of the tip of the round electric wire. A flat electric wire comprising the steps of: peeling off the insulating cover, stripping the conductor, and processing the end of the conductor so that the peeled insulator and the sheath of the fixing tape remain at the tip of the conductor. How to leave the terminal sheath.