Dashboard Display Housing With Bistable Collision-Avoidance Mount
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Solution Overview
Problem
Current display devices in vehicles are vulnerable to damage during accidents due to the impact of the steering column, requiring complex kinematic systems and additional components to prevent glass splintering, which increases complexity and cost.
Innovation Solution
The use of resilient bistable fastening elements within the display device's housing, which utilize geometrical elasticity to move the device out of the collision path, eliminating the need for additional kinematic systems and springs, and integrating these elements into the housing for simplified assembly and reduced parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If strong springs and additional kinematic support are used to move the display device out of the collision region, then the display device is protected from damage, but the device complexity and number of parts increase
Solution Approach 1:
The patent integrates the protective function directly into the housing structure by incorporating resilient bistable fastening elements into the housing itself. This merging of the protective mechanism with the housing eliminates the need for separate kinematic support structures and reduces the overall number of components while maintaining the display device's protection capability.
Solution Approach 2:
The patent extracts the protective function from complex spring-based kinematic systems and implements it through simplified bistable fastening elements integrated into the housing. This extraction removes unnecessary intermediate components while preserving the essential protective functionality against steering column impacts.
2Reliability
If additional kinematic support and fastening elements are added, then the display device protection is improved, but the manufacturing cost and assembly complexity increase
Solution Approach 1:
The resilient bistable fastening elements are integrated directly into the housing structure, combining the housing and fastening mechanism into a single component. This integration eliminates the need for separate fastening elements and reduces assembly steps, making manufacturing simpler while maintaining protection functionality.
3Reliability
If predetermined breaking points are used to trigger the movement, then the spring tension is absorbed, but the triggering force control is imprecise and may cause inadvertent triggering
Solution Approach 1:
The patent employs bistable fastening elements with precisely engineered geometric parameters that define two stable states. The transition between these states occurs at a specific, well-defined force threshold determined by the geometric design, providing precise control over the triggering force and preventing inadvertent activation while ensuring reliable protection when needed.
4Reliability
If strong springs are used to lift the display device quickly, then the collision risk is reduced, but the force required and potential for operational noise increase
Solution Approach 1:
The resilient bistable fastening elements are designed to remain stable during normal dynamic conditions of vehicle operation, but transition rapidly to the protective state when a collision force is applied. This dynamic design allows the system to distinguish between normal vibrations and actual collision events, providing protection only when necessary without generating operational noise.
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 solution effectively protects the display device by ensuring it moves out of the collision path with a controlled trigger force, reducing the risk of inadvertent triggering and operational noise, while simplifying assembly and reducing costs and material compatibility issues.
Implementation Method 1
bistable fastening elements which instead of a material elasticity utilize a geometrical elasticity in order to cause a movement
Data Source
AI summary
A display device and a dashboard comprising 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 has resilient bistable fastening elements. The latter are designed in such a manner that said fastening elements when responding to a movement of a steering column of the transportation move the display device out of a collision region with the steering column or a steering wheel.