Laminated Flat Electric Wire Tab Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Laminated flat electric wires in vehicles experience variations in electric resistance due to the disposition of tabs, which affects the uniformity of electric characteristics among the wires.
Innovation Solution
The laminated flat electric wire design includes tabs at both end portions that are positioned such that they do not overlap in the lamination direction, with at least one tab at each end portion placed between the tabs of other flat electric wires, avoiding configurations that maximize electric resistance, thereby reducing resistance variation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If tabs are provided at both end portions of flat electric wires, then input/output terminals for electric current are provided, but variation in electric resistance occurs among the flat electric wires
Solution Approach 1:
The patent applies asymmetry by configuring tabs at different positions among the flat electric wires. Specifically, at one end portion, tabs are positioned at outermost locations, while at the other end portion, tabs are positioned at inner locations that do not overlap when viewed in the lamination direction. This asymmetric arrangement prevents all wires from having identical tab configurations, thereby reducing electric resistance variation while maintaining functional terminal provision.
Solution Approach 2:
The patent addresses the tab positioning problem by considering the lamination direction as an additional dimension. By ensuring that tabs at one end portion are positioned such that they do not overlap with tabs of other flat electric wires when viewed in the lamination direction, the solution utilizes spatial arrangement in multiple dimensions to achieve uniform electric characteristics across all wires.
2Manufacturing precision
If multiple types of flat electric wires with different tab configurations are used to reduce resistance variation, then electric resistance uniformity is improved, but manufacturing cost increases
Solution Approach 1:
The patent achieves universal applicability with a single tab configuration design that works for all flat electric wires in the laminated structure. By positioning tabs such that outermost tabs at one end portion do not overlap with tabs at the other end portion when viewed in the lamination direction, the same wire design can be uniformly laminated multiple times without requiring different wire types, thereby reducing manufacturing cost while maintaining electric resistance uniformity.
Data Source
AI summary
A laminated flat electric wire includes four or more rectangular plate-shaped flat electric wires. The flat electric wires are laminated, and each of the flat electric wires has tabs extending from each of the flat electric wires, one tab being provided at each of a first end portion and a second end portion. In a plan view as viewed in a direction along a lamination direction of the flat electric wires, the tabs of the respective flat electric wires are provided so as not to overlap each other at each of the first end portion and the second end portion, and the flat electric wire having the tab provided outermost along a width direction of the flat electric wire, among the respective tabs provided at the first end portions, has, at the second end portion, the tab provided at a position interposed between the tabs of other flat electric wires.