Window Securing Part with Resilient Lip and Blocking Part

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Solution Overview

Problem

Existing window constructions are vulnerable to unauthorized disassembly of glass sections, allowing burglars to remove and reassemble windows without leaving obvious signs of entry, due to inadequate securing mechanisms, particularly relying on easily removable glazing beads.

Innovation Solution

A glass securing part is designed with a resilient lip and blocking part that snaps into a groove in the casement, providing enhanced security by preventing disassembly, using a plastic glass block with inclined lips and a steel blocking part to resist forces and prevent access, without adding significant production costs or complexity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If only an outside applied glazing bead is used to hold the window section in place, then the construction is simple and easy to manufacture, but the window section can be easily disassembled and removed

Engineering Contradiction:
Improvesimplicity of constructionVSAvoidsecurity against disassembly
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The glass block is nested within the casement groove, with the resilient lip inserting into the groove to create a secured position. The blocking part is positioned behind the glass block, creating a nested arrangement where components are embedded within each other to prevent removal while maintaining a compact structure.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The blocking part extends from the rear of the glass block into the groove, adding a dimensional element that prevents disassembly from the front. This creates a multi-dimensional securing mechanism where the block is restrained both by the groove engagement and the blocking part extending into the groove space.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Reliability

If silicone glue is applied to reinforce protection against disassembly, then security is improved, but additional cost and environmental problems are introduced

Engineering Contradiction:
Improvesecurity against disassemblyVSAvoidproduction cost and environmental impact
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The chemical bonding mechanism of silicone glue is replaced with a mechanical securing system consisting of the resilient lip engaging with the groove and the blocking part preventing disassembly. This substitution eliminates the need for adhesives while providing equivalent or superior security through pure mechanical means.

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

Solution Approach 2:

The mechanical securing system uses simple, inexpensive components that can be easily manufactured and installed without the need for expensive adhesive materials. The resilient lip and blocking part are designed as durable but low-cost elements that provide effective security.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Reliability

If a resilient lip and blocking part are added to secure the glass block in the groove, then security against disassembly is improved, but device complexity increases

Engineering Contradiction:
Improvesecurity against disassemblyVSAvoidcomplexity of securing part
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The glass block serves multiple functions: it acts as the window glass support, provides structural spacing, engages with the groove through the resilient lip for securing, and works with the blocking part to prevent disassembly. This multi-functionality reduces the need for separate dedicated securing components.

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

Solution Approach 2:

The securing function is merged into the glass block assembly itself, with the resilient lip and blocking part becoming integral components of the glass block unit. This integration eliminates the need for separate securing mechanisms and reduces overall system complexity.

Inventive Principle:
Principle #5Merging (Combining)

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 effectively secures the window section in place, preventing unauthorized disassembly and enhancing burglary resistance without increasing production costs or environmental impact, ensuring the window's integrity and security.

Implementation Method 1

a resilient lip (4) which is snapping in a groove (3) in the casement (2)

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP2220319B1Device for securing a window section
Publication Date: 2017.09.13 INWIDO AB
  • EP2220319B1 patent drawingFigure 1~1a
  • EP2220319B1 patent drawingFigure 2~2b
  • EP2220319B1 patent drawingFigure 3~3b

AI summary

A device for assembling in a window section (1) and in its casement (2) and where this device is a complete glass securing part (11) which is constructed of a glass block (10) and a blocking part 12. The glass securing part (11) and its glass block (10) has resilient lips (4) which engage in grooves (3) of the casement and which, when these lips is snapping in the groove, prevents that the glass securing part can be disassembled. Since the blocking part (12) extends upwards and in front of the lower part of the window section the window section cannot be removed from the casement. With the present device is consequently a protection against simple burglaries obtained, which in some cases are difficult to prove.