Connecting Element With Inorganic Fire-Resistant Coating

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Solution Overview

Problem

Existing connection elements for load-introducing components in buildings face challenges in combining good static load-bearing capacity with effective thermal insulation, resistance to weathering, and mechanical stress, while also requiring improved fire protection.

Innovation Solution

A connecting element with a cuboid-shaped insulating body, reinforced by reinforcing bars, and coated with a partially cured inorganic binder on plate-shaped elements provides enhanced protection against weathering and mechanical stress, replacing traditional plastic caps, and offering improved fire resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If plastic cover caps are used to protect the insulating body, then mechanical protection is provided, but fire resistance deteriorates

Engineering Contradiction:
Improvemechanical protectionVSAvoidfire resistance
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent changes the material parameter of the protective coating from organic (plastic) to inorganic (cement-based), transforming it from flammable to fire-resistant while maintaining mechanical protection capabilities through proper formulation and curing

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite protective coating by combining cement binder, sand aggregate, and polymer additive, achieving both mechanical strength and fire resistance that neither material could provide alone

Inventive Principle:
Principle #40Composite materials

2Reliability

If traditional protective measures are used, then weathering protection is provided, but the complexity of the structure increases

Engineering Contradiction:
Improveweathering protectionVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple protective functions (weathering protection, fire resistance, mechanical strength, and thermal insulation) into a single integrated cement-based coating system, eliminating the need for separate protective components and reducing structural complexity

Inventive Principle:
Principle #5Merging (Combining)

3Strength

If hot-melt adhesive is used for assembly, then bonding is achieved, but production time and cost increase

Engineering Contradiction:
Improvebonding strengthVSAvoidproduction time
Core Design Contradiction:
StrengthVSProductivity

Solution Approach 1:

The patent replaces the mechanical/thermal bonding process (hot-melt adhesive requiring heating and cooling) with a chemical bonding process (cement-based adhesive that cures at ambient temperature), eliminating the need for heating equipment and reducing production time

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

Solution Approach 2:

The cement-based adhesive system is self-sufficient, curing through natural hydration reactions without requiring external heat sources or complex application equipment, enabling simpler and faster production processes

Inventive Principle:
Principle #25Self-service

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

The solution achieves excellent static load-bearing capacity, thermal insulation, resistance to weathering and mechanical stress, and enhanced fire protection, while reducing material and labor costs through the use of inorganic binder coatings and eliminating the need for hot-melt adhesive.

Implementation Method 1

Adding water to the not yet cured binder triggers chemical reactions that lead to solidification of the material

Methodology Applied
Scientific EffectChemical reactions: Chemical Bonding

Implementation Method 2

good thermal insulation must be ensured, as large temperature differences occur between interior and exterior components

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentEP4621151A1Connecting element for load-carrying components
Publication Date: 2025.09.24 MAX FRANK GMBH & CO KG
  • EP4621151A1 patent drawingFigure 1
  • EP4621151A1 patent drawing
  • EP4621151A1 patent drawing

AI summary

A connecting element 1 for connecting a load-bearing component to a load-introducing component is described. The connecting element 1 has a cuboid-shaped insulating body 2 which, in the installed state, is arranged between the load-bearing component and the load-introducing component. The cuboid-shaped insulating body 2 has a front side facing the load-introducing component in the installed state, a rear side facing the load-bearing component in the installed state, an upper side connecting the front and rear sides and arranged vertically upwards in the installed state, and a lower side connecting the front and rear sides and arranged vertically downwards in the installed state, wherein the front and rear sides of the insulating body 2 are penetrated by reinforcing bars 3. A plate-shaped element 6.0, 6.U, wherein the plate-shaped element 6.0, 6.U is provided with a coating 5 on its surface facing away from the insulating body, wherein the coating 5 contains an at least partially cured inorganic binder.