Vehicle Window Document Holder with Magnetic Locking

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Solution Overview

Problem

Existing devices for displaying documents on vehicle windshields obstruct visibility, are difficult to use, and risk demagnetizing magnetic cards due to strong magnetic fields, while lacking quick replacement capabilities.

Innovation Solution

A bipartite structure with a support module and presentation module, utilizing a thin protrusion for secure insertion into the vehicle gap, combined with adhesive and magnetic locking, ensures rapid document presentation and removal without obscuring information or causing demagnetization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a magnetic clip is used to attach the document to the vehicle window, then the document can be securely held, but the strong magnetic field risks demagnetizing magnetic stripes or smart card chips

Engineering Contradiction:

Improvedocument attachment securityVSAvoidmagnetic field demagnetization

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the magnetic attachment system with a mechanical insertion system. The card holder has an insertion end that fits into a groove on the vehicle window, secured by friction and geometry rather than magnetic fields. This eliminates the harmful magnetic field while maintaining secure document attachment.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If a complete frame surrounds the card to hold it securely, then the document is firmly attached, but the view through the windshield is obstructed

Engineering Contradiction:

Improvedocument attachment securityVSAvoidwindshield visibility area

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The patent extracts the attachment function from a complete surrounding frame and implements it only at the insertion end of the card holder. The card holder is secured only at one end through the groove insertion, leaving the rest of the card holder and document visible through the windshield without obstruction.

Inventive Principle:

Principle #2Taking out (Extraction)

3Productivity

If the card holder is designed for quick card replacement, then document exchange is rapid, but the device becomes more complex

Engineering Contradiction:

Improvecard replacement speedVSAvoidcard holder structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the card holder into distinct functional parts: an insertion end with specific geometry for the groove, a body portion for holding the document, and a release mechanism. This segmentation allows quick card replacement through simple insertion and removal actions while keeping the overall structure relatively simple and manageable.

Inventive Principle:

Principle #1Segmentation

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 device allows easy, quick, and reliable document presentation with minimal visual impact and magnetic interference, maintaining document visibility and integrity during vehicle movements.

Implementation Method 1

The insertion end forms a protrusion smaller than the rest of the support, and configured to be inserted into the gap between the vehicle window and at least part of the passenger compartment

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 2

the magnets are provided on at least two perpendicular sides of the card holder

Methodology Applied

Scientific EffectMagnetism: Magnetism

Implementation Method 3

at least one face of the support module includes adhesive means capable of locking the position of said support module

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentEP4143812B1Device for supporting and presenting documents by affixing on a vehicle window

Publication Date: 2026.03.18 BENYOUNES RAOUTI

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AI summary

The invention relates to a device (1) for supporting and presenting documents for affixing on a vehicle window, characterised in that it comprises: • - a support module (2) configured to be inserted in a gap formed between the vehicle window and at least one part of the passenger compartment of the vehicle in contact with the vehicle window; the support module (2) comprising, on the one hand, a protruding insertion end (21) that is insertable in said gap in a permanent and locked attachment position and, on the other hand, a groove forming a depression in the support module and equipped with at least one metal plate; • - a presentation module (3) comprising a card holder (31) having at least one transparent face intended to be affixed on the vehicle window and configured to receive at least one document of chosen dimensions, the presentation module (3) being capable of being housed in the groove of the support module (2) and comprising, on at least one of its flanks (32), at least one magnet of a chosen size in said flank (32), and configured to magnetically attach to the metal plate of the support module (2) in a removable manner, thus making it possible to lock the position of the presentation module (3) on the support module (2) affixed on the vehicle window.