Ligneous Lining Element With Sewn Seam Attachment

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Solution Overview

Problem

The challenge is to create a decorative lining element using a ligneous material that is both flexible and non-damaging to attach with another material without the use of adhesives, which are often polluting and cause weight and aesthetic issues.

Innovation Solution

A lining element with a complex of a thin ligneous material layer and a reinforcement layer, allowing for sewing without damage, using a seam that extends across the entire complex and is coated with a supporting layer, made of composite materials, to ensure a smooth and pollution-free attachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If adhesive is used to attach the wooden layer and the other layer, then the layers are attached together, but the weight of the lining element increases and polluting materials are used

Engineering Contradiction:
Improveattachment strengthVSAvoidweight of lining element
Core Design Contradiction:
StrengthVSWeight of moving object

Solution Approach 1:

The patent removes the adhesive layer entirely from the construction, replacing chemical bonding with mechanical stitching. The wooden layer and other layer are attached directly through seams created by stitching, eliminating the need for adhesive and its associated weight and environmental concerns.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the chemical bonding system (adhesive) with a mechanical bonding system (stitching/sewing). Threads or stitching elements mechanically interlock the layers, providing attachment strength without the drawbacks of adhesive materials.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Strength

If adhesive is used to attach the layers, then the layers are attached together, but visible defects appear at the junction if layers are poorly aligned or move during bonding

Engineering Contradiction:
Improveattachment strengthVSAvoidalignment precision
Core Design Contradiction:
StrengthVSManufacturing precision

Solution Approach 1:

The stitching process allows for preliminary positioning and adjustment of layers before final attachment. The mechanical nature of stitching permits minor adjustments during the process, ensuring proper alignment without the rigid constraints of adhesive bonding that require perfect initial positioning.

Inventive Principle:
Principle #10Preliminary action

3Manufacturing precision

If a wooden layer is used, then the decorative aspect is improved, but the malleability is reduced and it becomes difficult to attach without causing degradation

Engineering Contradiction:
Improveaesthetic qualityVSAvoidease of attachment
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The wooden layer is constructed as a thin veneer or laminated structure that provides the desired aesthetic appearance while maintaining sufficient flexibility. This thin-film approach allows the wood to be manipulated and attached without causing degradation, splintering, or cracking.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The patent replaces adhesive bonding with mechanical stitching that distributes stress along the attachment line rather than concentrating it at bond lines. This mechanical approach allows the thin wooden layer to be attached without the high localized pressures that could cause degradation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Strength

If adhesive is used to ensure proper attachment, then the layers are attached together, but the weight is increased due to adhesive positioned over the whole junction area

Engineering Contradiction:
Improveattachment strengthVSAvoidamount of adhesive material
Core Design Contradiction:
StrengthVSQuantity of substance

Solution Approach 1:

The patent completely removes the adhesive material from the construction, replacing it with a stitching system that uses minimal material (threads or stitching elements) to achieve attachment across the junction area.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS9352704B2Lining element having a visible face partly formed with a ligneous material
Publication Date: 2016.05.31 FAURECIA INTERIEUR IND
  • US9352704B2 patent drawing
  • US9352704B2 patent drawing

AI summary

A lining element includes at least one decorative layer formed from at least one complex that includes both a ligneous material layer having a backside and a front side and a reinforcement layer extending over the backside of the ligneous material layer. The decorative layer further includes at least one additional layer made in a material different from the ligneous material. The front side of the additional layer substantially extends in the continuity of the front side of the complex. The additional layer and the complex are attached to each other through at least one seam.