Door Glazing Snap-Strip Mechanism Eliminates Adhesive Soiling

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Solution Overview

Problem

Existing methods for glazing doors using glass units are inefficient due to the risk of glue soiling and the need for precise placement of strips, which often requires advanced machinery or a large number of employees.

Innovation Solution

A method utilizing a snap function for attaching a strip to a door, where the strip's flange is designed with protrusions that elastically deform to secure the glass unit in place, eliminating the need for adhesives and simplifying the production process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If glue is used to attach the strip to the door, then the strip can be securely attached, but personnel and machines risk soiling and additional inspection and cleanup steps are required

Engineering Contradiction:
Improveattachment strengthVSAvoidsoiling of personnel and machines
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent removes the adhesive (glue) from the attachment process entirely, replacing it with a mechanical snap-function attachment system where the strip is secured through elastic deformation and geometric interlocking rather than chemical bonding

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the chemical attachment mechanism (adhesive bonding) with a mechanical attachment mechanism (elastic deformation and snap-function interlocking), eliminating the harmful effects of glue while maintaining secure attachment

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

2Strength

If nail or screw is used to attach the strip to the door, then the strip can be securely attached, but the strip must be precisely positioned and held in correct position requiring advanced machinery or many employees

Engineering Contradiction:
Improveattachment strengthVSAvoidcomplexity of placement machinery
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The strip's flange is designed with elastic properties that enable it to self-position and self-secure during insertion, with the elastic deformation automatically providing the attachment function without requiring external positioning devices or complex machinery

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent changes the physical state of the flange from rigid to elastic, allowing it to deform during insertion and then recover to secure the strip in place, simplifying the attachment process while maintaining secure fixation

Inventive Principle:
Principle #35Parameter changes

3Reliability

If traditional glazing method with glue is used, then the glass unit can be attached to the door, but the production process requires inspection after production and personnel prepared to remove surplus glue

Engineering Contradiction:
Improveattachment reliabilityVSAvoidtime for inspection and cleanup
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent eliminates adhesive material from the process, removing the source of surplus material that would require cleanup and inspection, while maintaining reliable attachment through mechanical means

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The snap-function attachment method allows the strip to be quickly secured without the need for adhesive application, curing time, or subsequent cleanup operations, significantly reducing the production cycle time

Inventive Principle:
Principle #21Skipping (Rushing through)

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

This method simplifies the glazing process by reducing the need for adhesives and minimizing the complexity of strip placement, allowing for more efficient and cost-effective manufacturing with improved safety and reduced labor requirements.

Implementation Method 1

whereby parts of the flange elastically give way to the pressure that arises between the flange and the outer side of the outer layer as the strip by means of pressure is placed in the opening

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentEP2274494B1Method for glazing a door and a door composition
Publication Date: 2018.07.11 JELD WEN SVERIGE AB
  • EP2274494B1 patent drawingFigure 1
  • EP2274494B1 patent drawingFigure 2
  • EP2274494B1 patent drawingFigure 3

AI summary

The invention relates to a method of glazing a door (1) comprising a first outer layer (5), comprising a first outer side (6) and a first inner side (7), a second outer layer (13) comprising a second outer side (14) and a second inner side (15) and an insulating layer (17) arranged between the first inner side (7) and the second inner side (15). The method comprises the steps. - To place a unit of glass (3) in one of the door (1) existing through opening (2). - To place a first strip (4) to abut against the unit of glass (3) and to abut against the door (1). - To attach the first strip (4) against the door (1) by means of that of the first strip (4) existing first flange (9) is placed by means of snapping against the first inner side (7) of the first outer layer (5) between the unit of glass (3) and the first outer layer (5). The invention also relates to a strip, a door and a door composition according to the method.