Vehicle Floor Decoupling Assembly Without Adhesive Bonding

Solution Overview

Problem

Existing decoupling assemblies for public transport vehicle floors require extensive surface preparation, adherence to specific conditions, and involve safety risks during heavy load handling, necessitating a faster and safer installation method.

Innovation Solution

A decoupling assembly using screws and rivets for attachment, with a resilient decoupling element between metal pieces, allowing for rapid assembly without adhesive curing time and eliminating the need for surface preparation and ballasting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If adhesive bonding is used to attach the floor to the structure, then a robust attachment is achieved, but the assembly time is extended due to surface preparation and curing time

Engineering Contradiction:

Improveattachment strengthVSAvoidassembly time

Core Design Contradiction:

StrengthVSLoss of time

Solution Approach 1:

The decoupling assembly is divided into separate components: a first metal piece attached to the floor, a second metal piece attached to the structure, and a decoupling element between them. This segmentation allows mechanical fastening (screws/rivets) instead of adhesive bonding, eliminating surface preparation and curing time while maintaining robust attachment.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent replaces the chemical bonding mechanism (adhesive) with a mechanical fastening system (screws and rivets). This substitution eliminates the need for surface preparation and curing time, reducing assembly time while maintaining attachment strength.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Strength

If adhesive bonding is used to attach the floor to the structure, then a robust attachment is achieved, but the process complexity increases due to surface preparation requirements

Engineering Contradiction:

Improveattachment strengthVSAvoidinstallation simplicity

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The decoupling assembly is divided into separate components: a first metal piece attached to the floor, a second metal piece attached to the structure, and a decoupling element between them. This segmentation allows mechanical fastening (screws/rivets) instead of adhesive bonding, eliminating surface preparation and curing time while maintaining robust attachment.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent replaces the chemical bonding mechanism (adhesive) with a mechanical fastening system (screws and rivets). This substitution eliminates the need for surface preparation and curing time, reducing assembly time while maintaining attachment strength.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Stability of the object's composition

If ballasting is used during adhesive installation, then the floor remains stable during curing, but safety risks arise from handling heavy loads

Engineering Contradiction:

Improvefloor stabilityVSAvoidsafety risks

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The decoupling assembly is pre-assembled with the decoupling element positioned between the metal pieces before attachment to the structure. This preliminary arrangement ensures stability during installation without requiring heavy ballasting, eliminating safety risks associated with handling heavy loads.

Inventive Principle:

Principle #10Preliminary action

4Strength

If adhesive bonding is used to attach the floor to the structure, then a robust attachment is achieved, but environmental conditions must be controlled during installation

Engineering Contradiction:

Improveattachment strengthVSAvoidinstallation flexibility

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The patent replaces the chemical bonding mechanism (adhesive) with a mechanical fastening system (screws and rivets). This substitution eliminates the need for surface preparation and curing time, reducing assembly time while maintaining attachment strength.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables robust and flexible attachment of the floor to the vehicle structure with reduced assembly time, ensuring safety and efficiency by eliminating the need for surface treatment and heavy load handling.

Implementation Method 1

a decoupling element (28) interposed between the first metal piece (24) and the second metal piece (26)

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentEP3981671B1Uncoupling assembly for a floor of a public transport vehicle

Publication Date: 2026.01.28 SPEEDINNOV

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AI summary

The assembly (20) includes a block (22) comprising a first metal piece (24) intended to be fixed to a floor (1), a second metal piece (26) intended to be fixed to a vehicle structure (14) intended to receive the floor (1) and comprising at least one part (48) for fixing to the structure (14), and a decoupling element (28) interposed between the first metal piece (24) and the second metal piece (26).