Wire harness designing method and design support device

A design support device for supporting work of generating second manufacturing specification information optimized for each wire harness of each product number, based on first manufacturing specification information on a plurality of types of wire harnesses to which each product number is allocated, the device comprising:

• a memory storing instructions;
• and
• one or more processors configured to execute the instructions to implement:
• a function of extracting, as a primary common component, a component commonly provided in the wire harnesses of all the product numbers from among all components that form parts of the wire harnesses of all the product numbers in the first manufacturing specification information;
• a function of determining, by the primary common component, a configuration of a basic part of the wire harness to be manufactured;
• a function of classifying and outputting a user interface displaying, as an optional components from among the components that form the parts of the wire harnesses of all the product numbers, the rest of the primary common component among all the components that form the parts of the wire harnesses of all the product numbers;
• a function of acquiring information indicating a predicted production quantity for each product number and a usage rate of each component;
• a function of extracting, as a secondary common component, and outputting, to the user interface and as a rearrangement of a display of the optional components by the user interface, a plurality of component groups commonly provided in at least a plurality of product numbers among the optional components of which the usage rate is equal to or higher than a predetermined value among the wire harnesses of the plurality of product numbers extracted based on the predicted production quantity, and of determining, by the extracted secondary common component, a configuration of an additional part of the wire harness to be manufactured, wherein the plurality of component groups are of the optional components which are classified from among the components that form the parts of the wire harnesses of all the product numbers;
• a function of classifying, as an additional component, each component of the rest of secondary common components among the optional components;
• and
• a function of forming the whole wire harness of each product number in the second manufacturing specification information with a combination of the wire harness of the basic part, the wire harness of the additional part, and the additional component.