Water stopping method, wire harness processed by the method and water stopping apparatus

Abstract

A waterproofing device that allows a waterproofing material to penetrate into exposed core wires of a covered electric wire constituting a wire harness includes a pair of a pair of exposed core wire portions of the wire harness that can be disposed by abutting against each other to form a pressurized space. A mold, a filling part that fills the pressurized space in which the core wire exposed portion is arranged with a waterproof material, and a pressurizing part that supplies pressurized gas into the pressurized space and pressurizes the pressurized space.

Description

technical field [0001] The present invention relates to a waterproof method for waterproofing between core wires of covered electric wires of a wire harness, a wire harness treated by the waterproof method, and a waterproof device. Moreover, the "waterproof" in the description of the present invention does not only refer to preventing the intrusion of water, but also includes the meaning of effective action on all liquids such as water, oil and alcohol, but the widely used "waterproof" is used here as a general term. name to explain. Background technique [0002] As a waterproof method, there has been a method of filling the exposed core wire with a waterproof material (for example, refer to Patent Document 1). In particular, as a method of making the waterproof material penetrate the core wire well, there is known a method of supplying a waterproof material. Alternatively, after supplying, the water-repellent material is infiltrated into the inner side of the insulating co...

AI Technical Summary

Problems solved by technology

Therefore, since the gap between the core wires decreases with the reduction of the diameter or weight of the covered electric wire, etc., there is a limit to the penetration of the waterproof material.

[0007] In addition, it is difficult to realize the reduction of the volume of the waterproof material between the penetrating core wires

[0008] In addition, at one end portion or an intermediate joint of the plurality of covered electric wires to which a plurality of covered electric wire core wires are collectively connected, since the air inside the plurality of insulating coatings needs to be sucked from the other side of the plurality of end portions, a large Therefore, not only a wide working space is required, but also a lot of equipment investment

[0009] In addition, when the covered electric wire 51 has a large diameter or when a plurality of covered electric wires 51 are bundled into one, since the usage amount of the waterproof material increases, the waterproof material must be additionally supplied. In addition, it is impossible to completely cover the end of the core wire 53 with the waterproof material. Therefore, the waterproof material does not spread all over the core wire 53 of the covered electric wire 51, resulting in insufficient waterproof effect.

[0010] In addition, the waterproof material dripped on the end portion of the core wire 53 often hangs down, so it is necessary to carry out complicated work to remove the dropped waterproof material.

[0011] In addition, when a waterproof material is attached to the bolt clamp as the contact of the terminal 52, there is a possibility that the conduction at the terminal 52 may not be normal.

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