Frame system

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Solution Overview

Problem

Existing plastic profiles for window and door frame assemblies lack the ability to easily integrate electrical ventilation systems and their cabling without compromising moisture protection.

Innovation Solution

The plastic profile is designed with a cross-sectional division into two hollow chambers, where one chamber is for ventilation and drainage, and the other, with an opening extending over the entire length, accommodates the cabling of the electrical ventilation system, ensuring moisture protection and easy access for installation and replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single hollow chamber is used in the plastic profile for ventilation and drainage, then the structure is simple, but electrical cabling cannot be integrated without compromising moisture protection

Engineering Contradiction:
Improveability to integrate electrical ventilation systemVSAvoidmoisture protection of wiring
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The external flap is divided into two separate hollow chambers: a first hollow chamber for ventilation and drainage functions, and a second hollow chamber specifically for accommodating electrical cabling. This segmentation allows each chamber to serve its dedicated function while protecting the wiring from moisture through the separation provided by the profile structure.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If the plastic profile is designed with multiple hollow chambers for electrical integration, then electrical systems can be easily integrated, but the manufacturing complexity increases

Engineering Contradiction:
Improveease of integrating electrical cablingVSAvoidprofile structure complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The plastic profile is designed as a multi-functional component that simultaneously provides structural support, ventilation, drainage, and electrical cable accommodation. The standardized two-chamber design allows the same profile structure to serve multiple purposes throughout the window or door frame assembly, simplifying the overall manufacturing process despite the increased functional complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP2813657B1Frame system
Publication Date: 2020.04.15 REHAU AG & CO
  • EP2813657B1 patent drawingFigure 1~3
  • EP2813657B1 patent drawingFigure 4~6
  • EP2813657B1 patent drawingFigure 7

AI summary

The present invention relates to a plastic profile (1) for a door and/or window frame assembly (11) with a rebate base (3) and an outer overlap (2) with at least one hollow chamber (5), wherein the outer overlap (2) in cross-section, in the direction from an outer surface (9) facing away from the rebate base (3) to a side (10) facing the rebate base (3), comprises at least one hollow chamber (5) facing the outer surface (9) and a hollow chamber (5') facing the side (10) facing the rebate base (3). Furthermore, the present invention also relates to a frame assembly (11), wherein at least one of the profile members forming the frame assembly (10) is made of such a plastic profile (1).