Wire Harness Regulation Member for Sliding Door

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional wire harnesses fail to absorb inner/outer circumference differences in stacked plate members, leading to potential functional failures when ends are fixed, as they do not allow for necessary relative movement along the longitudinal direction.

Innovation Solution

A wire harness design featuring a flexible conductor, a regulation member composed of stacked flexible plate members with long holes at their ends, and holding members with convex portions that allow relative movement along the longitudinal direction, enabling the absorption of inner/outer circumference differences.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the ends of the plate members are fixed, then the structure is stable, but the inner/outer circumference difference cannot be absorbed and the regulation member cannot perform its desired function

Engineering Contradiction:
Improvestructural stabilityVSAvoidregulation function
Core Design Contradiction:
Stability of the object's compositionVSReliability

Solution Approach 1:

The patent applies the dynamics principle by transitioning from a fixed structure to a dynamic one. The holding member includes a convex portion that is inserted into long holes formed in the plate members, allowing relative movement along the longitudinal direction. This dynamic connection enables the regulation member to absorb inner/outer circumference differences while maintaining structural integrity, thus resolving the contradiction between stability and regulatory function.

Inventive Principle:
Principle #15Dynamics

2Shape

If the plate members are stacked with fixed ends, then the regulation member maintains its shape, but it cannot accommodate circumference variations and may fail functionally

Engineering Contradiction:
Improveregulation member shapeVSAvoidcircumference variation accommodation
Core Design Contradiction:
ShapeVSAdaptability or versatility

Solution Approach 1:

The holding member with convex portions inserted in long holes provides a dynamic connection that allows plate members to move relative to each other along the longitudinal direction. This enables the regulation member to adapt to inner/outer circumference differences while maintaining its overall shape and regulatory function, resolving the contradiction between shape maintenance and adaptability.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3659870B1Wire harness
Publication Date: 2021.02.24 YAZAKI CORP
  • EP3659870B1 patent drawingFigure 1
  • EP3659870B1 patent drawingFigure 2
  • EP3659870B1 patent drawingFigure 3~4

AI summary

A wire harness (WH) includes a conductor (1) that flexibly connects a vehicle body (101) side of a vehicle (100) and a moving body (103) that is mounted in the vehicle (100) and slides with respect to the vehicle body (101), a regulation member (2) that is configured by stacking a plurality of flexible plate members (2a), extends along the conductor (1), and regulates a path of the conductor (1), and a pair of holding members (4, 5) that hold ends of the plurality of plate members (2a). In the ends of the plurality of plate members (2a), long holes (23) are formed that extend along a longitudinal direction (Ld) of the plate member (2a) at positions facing each other. The holding member (4) includes a convex portion (46) that is inserted in the long hole (23). The convex portion (46) allows one plate member (2a) to relatively move along the longitudinal direction with respect to another plate member (2a) in a state where the convex portion (46) is inserted in the long hole (23).