Dashboard Display Mount With Impact-Rotation Glass Protection
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Solution Overview
Problem
Display devices in vehicles are prone to head impact damage, with glass edges being particularly vulnerable to breakage due to inadequate energy absorption, leading to potential hazardous splinters and increased costs from additional protective films.
Innovation Solution
A display device with resilient fastening elements on its housing that rotates upon impact, displacing the force away from the glass edge and utilizing bistable elements for a flexural buckling mechanism to absorb energy, made from magnesium-based materials for robustness and reduced material complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a robust and stiff support with additional protective film is used for the glass, then the glass can withstand head impact, but the optical performance is compromised and production costs increase
Solution Approach 1:
The housing is designed with resilient fastening elements that allow dynamic rotation upon impact. The display device can rotate relative to the dashboard by a first angle in an first state and by a second angle (greater than the first angle) in a second state, enabling the system to adapt its geometry to dissipate impact energy away from the glass panel.
Solution Approach 2:
The patent changes the geometric parameters of the system by introducing rotation capability. The impact point displacement is achieved through angular rotation of the housing, transforming the static structure into a dynamic one that can redirect impact forces.
2Strength
If a robust and stiff support with additional protective film is used for the glass, then the glass can withstand head impact, but production costs increase
Solution Approach 1:
The housing incorporates resilient fastening elements that enable rotational movement upon impact. This dynamic mechanism eliminates the need for additional protective films and complex stiff support structures, simplifying the overall construction while maintaining impact resistance.
Solution Approach 2:
The patent converts the harmful impact energy into useful rotational movement of the housing. The resilient fastening elements transform the impact force into a rotation that displaces the impact point away from the glass edge, turning the harmful effect into a protective mechanism.
3Object-affected harmful factors
If the glass edge is protected with additional protective film, then breakage risk is reduced, but optical performance is compromised
Solution Approach 1:
Instead of adding static protective layers to the glass edge, the patent implements a dynamic rotation mechanism through resilient fastening elements. This rotation actively moves the impact point away from the vulnerable glass edge during impact, providing protection without any additional films that would compromise optics.
4Object-affected harmful factors
If resilient fastening elements allow rotation, then impact energy is absorbed and glass protection is improved, but device stability is reduced
Solution Approach 1:
The housing features resilient fastening elements that enable controlled rotation upon impact while maintaining stability during normal operation. The display device can rotate relative to the dashboard by a first angle in an first state and by a second angle (greater than the first angle) in a second state, providing dynamic response to impact while preserving operational stability.
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 reduces the risk of glass breakage and splinter formation, enhances safety by clearly indicating impact and requiring replacement, while maintaining robustness and reducing production complexity and costs.
Implementation Method 1
the housing on two opposite sides has resilient fastening elements which are designed in such a manner that a force acting perpendicularly on the display panel causes a rotation of the display device
Implementation Method 2
the resilient fastening elements are an integral constituent part of the housing... The resilient fastening elements may be generated in the context of the production, e.g. by using a suitable mold or by subsequent stamping
Data Source
AI summary
A display device and a dashboard having such a display device is disclosed. The disclosure moreover relates to a motor vehicle having such a dashboard. The display device has a display module having a display panel and a housing for receiving the display module. The housing on two opposite sides has resilient fastening elements. The latter are designed in such a manner that a force acting perpendicularly on the display panel causes a rotation of the display device about an axis perpendicular to the two opposite sides.