Elastic Catch Profile for Non-Destructive Pane Removal

Solution Overview

Problem

Existing profiles for fastening panes to frames do not allow for non-destructive removal of the covering strip, making it difficult to replace the pane without damaging the strip, especially when it is made of delicate materials like wood.

Innovation Solution

A fastening profile with a catch that protrudes on one or both sides of the clamping section, where one part is made of a more elastic plastic material than the rest, providing a secure clamping effect while allowing easy removal of the covering strip by deforming elastically when pulled back off.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a rigid catch is used to securely clamp the covering strip, then the clamping effect is improved, but the covering strip cannot be removed without destruction

Engineering Contradiction:

Improveclamping effectVSAvoidremoval of covering strip

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The catch is designed with non-uniform material properties: the base portion is made of rigid plastic for strong clamping, while the tip portion is made of more elastic plastic to enable gentle removal. This local differentiation of material quality allows the same component to provide both strong holding force and gentle release capability.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The catch is constructed as a composite structure combining two different plastic materials with different elastic moduli. The rigid plastic provides structural strength and clamping force, while the more elastic plastic at the tip allows reversible deformation during installation and removal, enabling non-destructive taking off of the covering strip.

Inventive Principle:

Principle #40Composite materials

2Ease of operation

If a flexible catch is used to allow easy removal, then the ease of operation is improved, but the clamping effect is reduced

Engineering Contradiction:

Improveremoval of covering stripVSAvoidclamping effect

Core Design Contradiction:

Ease of operationVSStrength

Solution Approach 1:

The catch is designed with non-uniform material properties: the base portion is made of rigid plastic for strong clamping, while the tip portion is made of more elastic plastic to enable gentle removal. This local differentiation of material quality allows the same component to provide both strong holding force and gentle release capability.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The catch is constructed as a composite structure combining two different plastic materials with different elastic moduli. The rigid plastic provides structural strength and clamping force, while the more elastic plastic at the tip allows reversible deformation during installation and removal, enabling non-destructive taking off of the covering strip.

Inventive Principle:

Principle #40Composite materials

3Manufacturing precision

If the catch is made entirely of rigid material, then the manufacturing precision is improved, but the covering strip is damaged during removal

Engineering Contradiction:

Improvecatch structureVSAvoiddamage to covering strip

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The catch is designed with non-uniform material properties: the base portion is made of rigid plastic for strong clamping, while the tip portion is made of more elastic plastic to enable gentle removal. This local differentiation of material quality allows the same component to provide both strong holding force and gentle release capability.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The catch is constructed as a composite structure combining two different plastic materials with different elastic moduli. The rigid plastic provides structural strength and clamping force, while the more elastic plastic at the tip allows reversible deformation during installation and removal, enabling non-destructive taking off of the covering strip.

Inventive Principle:

Principle #40Composite materials

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 the non-destructive removal and replacement of panes by providing a secure clamping effect for the covering strip while protecting delicate materials from damage during removal.

Implementation Method 1

one part of the catch is made of a more elastic plastic material than the clamping section with the remaining part of the catch... this second part elastically deforming as the covering strip is pulled back off

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS10267082B2Profile for fastening panes

Publication Date: 2019.04.23 KNAPP GMBH

AI summary

A profile made of plastic material to fasten a pane to a frame, comprising a first fastening section that can be placed against the pane and a second fastening section that can be anchored to the frame and at least one clamping section projecting away from the fastening sections, the clamping section having a catch to clamp a covering strip, wherein the catch sticks out on one or both sides of the clamping section and wherein one part of the catch is made of a more elastic plastic material than the clamping section with the remaining part of the catch.