JPS60136107A - Harness for electric device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] For the convenience of assembling electrical equipment, the internal wiring of the equipment is made by connecting a large number of insulated wires between the power supply section, the signal section, and the operating section in a harness in advance to suit the arrangement of the electrical components within the device. Usually, they are prepared by bundling them together, assembling them, and attaching them to equipment to complete the wiring.

The terminal part of this harness is usually covered with an insulating material that electrically insulates the conductive core wire, so it is possible to peel off this coating layer and then connect it directly to an electrical component, or to peel off the IU layer. Connect to a connector and connect to electrical parts via the connector.

On the other hand, so-called press-contact terminals, in which electrical terminals or terminal elements are directly pressure-connected from the outside of the coating layer without the need to peel off the coating layer, are known, for example, from Japanese Patent Publication No. 39-23364. It has been improved and is now commonly used, and the conductor core wires used therein have ranged from single wires to those using multiple conductor core wires.

However, in the case of the harness for electrical equipment that is the subject of this application, in order to facilitate installation into the electrical equipment, as described above, a large number of flexible and relatively thin conductors are used in the wire bundle portion. It is necessary to construct a twisted wire that can be used as a main wire.

For example, when six strands of the same diameter are twisted around a single strand of the same diameter, when 1=, it is more likely to cause so-called eye-jumping, strand crossing, or laughter than in other cases. However, during this time, the core-twisted insulated wire is
Even when the wire is pressed into the pressure welding terminal 1 shown in the figure, the =J dimension of the gap 3 of the pressure welding terminal is much larger than the diameter of the strand 2, and is close to the stranded wire outline. i゛(
When pushed in, the concentric strands lose their shape and four of the seven strands 2 form the contact 11 forming the gap.
1i14, but the three bare wires 2- do not.

Furthermore, as is mechanically clear from FIG. 1, although not shown, the contact li! The crimping force of 4 to the strand 2 is considerably inferior.

Furthermore, since the wire diameter is small, there is a risk that the wire will be cut off by the guide edge 5 and contact edge 6 of the contact arm 4 during pressure welding work.

In order to solve these vacancies, the inventors of the present invention, after twisting a plurality of conductor core wires, pass them through a wire drawing die or compression roller, etc. As a result, we succeeded in achieving flexibility that is compatible with harnesses for electrical equipment and reliability in connection to insulation displacement terminal yarn production.

No. 2- is an enlarged sectional view of the insulated wire according to the embodiment of the present invention, which is pressed into contact with the pressure contact terminal, and this wire has a wire diameter of 0.2 + 1111 mm.
1 copper 1j! 7 pieces are twisted concentrically with a pitch of 8IIIR, and 0
．． 55IIIR1! or 0.56. The core wire was compressed by passing it through a wire drawing die with a diameter of 1. Conductor cross-sectional area N before compression
is slightly different when calculated from the diameter of the wire, when calculated from the electrical resistance of the conductor, and when calculated from Mm, but in this case, the N value calculated from the diameter of the wire is 0.2199 square feet, and the compression Ratio to the subsequent conductor circumscribed circle area S: N/S x 1'
If 00% is the compression ratio (Ulil calculation), then 0.5s
When compressed with a die of mm diameter, the compression ratio of /,: 1' is 92%, and when compressed with a die of 0.56#+l1ll\, the compression ratio of ゛ is 89%. These conductor cores were coated with vinyl chloride resin by pressing 11F with an extruder to complete an insulated wire with a coated outer diameter of 1 to 1.5 m, and a harness was assembled.

When the insulated wire terminals of these harnesses were pressed into crimp terminal 1 shown in the enlarged cross-sectional view in Figure 2, it was confirmed that the conductor core wires were well connected without deforming.

Also, regarding the flexibility, □ was obtained that was flexible enough to cause no trouble during wiring work inside -1 air equipment.

The number of twisted strands in the present invention may be greater or less than the above seven, but it is preferably seven or as many as possible for concentric twisting.

Also, 1. If the shrinkage ratio exceeds 95%, the flexibility will be poor, but if the diameter of the wire is small, it can be used, and conversely, if the diameter of the wire is thick, the compression ratio should be adjusted. It is preferable to lower it.

As described above in detail, the present invention is extremely suitable for manufacturing and using as a harness for electrical equipment.

4. Brief explanation of the drawings ゛Figure 1 is an enlarged cross-sectional view of a conventional insulated wire that is pressure-welded to a compression terminal. Figure 2 is a similar enlarged view of a 7-wood twisted compressed conductor core wire ta edge wire according to an embodiment of the present invention. A cross-sectional view is shown, where '1 is a press-contact terminal, 2 is a wire, 3 is a gap, and 4 is a contact arm. , Application No. 249557 2 Name of the invention Harness for electrical equipment 3 Amendment stone Patent applicant address 1-14 Nishisuehiro-cho, Yokkaichi-shi, Miko-ken 4 Date of supplementary order March 27, 1980 (Date of shipment)

Claims (2)

[Claims] (1) In order to wire the inside of the electric fat device, in advance, a harness is made by bundling a large number of insulated wires together to match the arrangement of the electrical components inside the device.The insulated wires are made by twisting multiple conductor core wires l! /C, after twisting, the wire is passed through a wire drawing die or compression roller with a diameter smaller than the outer diameter of V, and compressed from the outside to transform it into a nearly circular cross-sectional shape, and then the wire is covered with an insulating material. , and the terminal portion of the plurality of bundled insulated wires has an N diameter slightly narrower than the outer diameter of the cross-sectional shape.
1. A harness for electrical equipment, characterized in that conductor core wires are press-welded to the respective gaps of terminal elements having parallel contact arms which are substantially parallel to each other from a metal plate with a gap between the two sides. (2) rvIN/S, where N is the cross-sectional area of the conductor core wire, and S is the circumscribed area of the substantially circular shape in which the conductor wire is compressed.
1. The harness for electrical equipment according to item 1, wherein the compression ratio expressed as 100% is in the range of 80 to 95%.