Magnetic Protective Frame for Large Windows and Doors

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing magnetic frames for large windows and doors are insufficiently fixed, prone to unintentional removal, and require structural reinforcement to maintain integrity, especially for dimensions like 1300x3000mm, while preserving the original design and aesthetics.

Innovation Solution

A perimeter frame with distributed magnetic elements, fixing and alignment squares at the corners, and a non-contacting design to ensure robust adhesion and easy removal, using neodymium magnets and lightweight materials like aluminum.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If magnetic elements are placed only in the corners of the frame, then the structure is simpler and lighter, but the adhesion is insufficient for large spans

Engineering Contradiction:
ImproveadhesionVSAvoidstructure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The magnetic fixation system is segmented into multiple individual magnetic elements distributed along the entire perimeter of the protective frame, rather than using a single continuous magnetic strip. This segmentation allows the frame to adhere at multiple discrete points, significantly improving adhesion reliability for large spans while maintaining structural simplicity through modular magnetic element placement.

Inventive Principle:
Principle #1Segmentation

2Reliability

If magnetic strips are used along the perimeter frame, then adhesion is improved, but the structure becomes too heavy for large spans

Engineering Contradiction:
ImproveadhesionVSAvoidframe weight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

Instead of using continuous magnetic strips that would add excessive weight, the solution segments the magnetic fixation into multiple individual magnetic elements spaced along the perimeter. This segmentation maintains adequate adhesion force distributed across multiple attachment points while significantly reducing the total weight compared to continuous magnetic strips, making it suitable for large span applications.

Inventive Principle:
Principle #1Segmentation

3Strength

If the protective frame is made robust for large dimensions, then structural integrity is improved, but removal becomes difficult and may cause damage

Engineering Contradiction:
Improvestructural integrityVSAvoidremoval
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The mechanical fixation system is replaced with a magnetic fixation system where individual magnetic elements provide the necessary holding force for structural integrity, but can be easily overcome by deliberate user action. This substitution allows the frame to remain securely fixed during normal use while enabling simple removal when needed, avoiding damage to the underlying structure.

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

4Stability of the object's composition

If the frame uses heavier materials for reinforcement, then structural stability is improved, but the minimalist design and aesthetics are compromised

Engineering Contradiction:
Improvestructural stabilityVSAvoidminimalist design
Core Design Contradiction:
Stability of the object's compositionVSShape

Solution Approach 1:

The protective frame utilizes composite construction combining lightweight materials (such as aluminum or composite profiles) for the frame structure with strategically placed magnetic elements for fixation. This composite approach provides sufficient structural stability for large dimensions while maintaining the lightweight, minimalist aesthetic design, avoiding the need for heavy reinforcement materials that would compromise the visual appearance.

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

Provides secure, removable, and aesthetically unobtrusive protection for large frames, allowing various panel types and spanning up to 1300x3000mm without altering the original frame design.

Implementation Method 1

The magnetic part has a plurality of magnetic means (2) embedded inside and it adheres by magnetism to the fixed frame (8) of the window or door frame

Methodology Applied
Scientific EffectMagnetism: Magnetism

Data Source

PatentEP4636219A1Protective frame for large frames
Publication Date: 2025.10.22 BBG SA
  • EP4636219A1 patent drawingFigure 1~2
  • EP4636219A1 patent drawingFigure 3~4
  • EP4636219A1 patent drawingFigure 5~6

AI summary

The present invention relates to a protection frame for large frames, this protection frame aims to minimize pollution inside buildings through the placement of protective panels of specific types. The present invention comprises a perimeter frame (1) that surrounds a protective panel and has two parts: a magnetic part, which has embedded inside a plurality of magnetic means (2) and adheres by magnetism to the fixed frame of the window or door; and a non-magnetic part that incorporates the protective panel and is superimposed on the perimeter of vent, but does not contact it, avoiding damage. The perimeter frame (1) has fixing squares (3) located on the non-magnetic part, and alignment squares (5) located on the magnetic part, in this way the structure is reinforced and can thus increase the size of the job site rough opening / windows / doors.