Manufacturing method for wire harness

Abstract

Disclosed is a manufacturing method for a wire harness having a shape-retaining member and protector comprising a thermoplastic material, said manufacturing method enabling the easy formation of the axial shape of the shape-retaining member and protector into a predetermined shape during a manufacture process. The manufacturing method has: a first step, in which the periphery of an electrical wire is coated by a body (13) to be molded comprising a thermoplastic material, and in which the body (13) to be molded is formed into a predetermined cross-sectional shape and dimensions by applying pressure thereto while heating the body (13) to be molded at a temperature at which plastic deformation is possible because of the thermoplasticity; and a second step, after the first step, in which the body (13) to be molded is formed into a predetermined axial shape while at the temperature at which plastic deformation is possible because of the thermoplasticity, and is cooled after being formed into the predetermined axial shape. In the second step, the shape-retaining member (12) obtained through the first step is inlaid in a molding section (721) formed in a lower mold (72) of a second molding body (7), forming the axial shape of the shape-retaining member (12), which is then cooled.

Description

technical field [0001] The present invention relates to a wire harness manufacturing method, and more particularly, the present invention relates to a method of manufacturing a wire harness provided with a shape maintaining member having a function) to maintain a predetermined portion of wires forming a harness. Background technique [0002] In a vehicle such as an automobile, a wire harness interconnecting electric devices and electronic devices is arranged. Since the wire harness is arranged along a predetermined path inside the vehicle or the like, the wire harness is formed in a shape suitable for the arrangement in a wire harness manufacturing stage in some cases. For example, the wire harness (ie, the electric wires forming the wire harness) may be formed in a shape corresponding to the shape of the path in which the wire harness is arranged. [0003] Accordingly, the shape maintaining member is attached to a predetermined portion of the electric wires forming the wi...

AI Technical Summary

Problems solved by technology

However, in this method, the process of tape winding requires much labor and time

Also, the appearance of the tape-wound structure is terrible

Also, in the method of manually winding the tape, there is a possibility that a change in quality occurs due to deformation of the shape or the like

[0014] Note that in the structure where the injection molded product is attached to the electric wire, when the predetermined part of the wire harness has a three-dimensional shape, the design of the injection molding die is difficult, and the setup cost increases

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