Wind Deflection Arm Stabilization via Dual-Surface Guidance
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Solution Overview
Problem
Existing wind protection devices on vehicle roofs lack stability during operation, particularly when exposed to forces from above, leading to potential instability and inefficiency in wind deflection.
Innovation Solution
The wind deflection arm is supported by an additional stationary sliding surface that complements the guiding path, providing additional support and stabilization, combined with spring units to maintain the curved wind deflection member in its raised operating position, and is designed with mirror-symmetrical guiding mechanisms and sliding blocks for enhanced stability and guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the wind deflection arm is supported only by the guiding mechanism with a slotted guide, then the device complexity is reduced, but the stability of the wind deflection member deteriorates under forces from above
Solution Approach 1:
The invention introduces a second supporting surface that extends in a direction different from the guiding path (e.g., transverse or longitudinal direction of the vehicle), creating a two-dimensional support system. This additional dimension of support prevents the wind deflection arm from tilting or rotating under vertical forces, thereby stabilizing the wind deflection member without significantly increasing mechanism complexity
Solution Approach 2:
The second supporting surface acts as an intermediary element between the wind deflection arm and the roof structure. This intermediate support surface distributes and redirects forces acting on the wind deflection arm, preventing direct transmission of destabilizing forces to the guiding mechanism while maintaining operational freedom
2Ease of operation
If the wind deflection arm is displaceable only through the curved guiding path, then the ease of operation is improved, but the reliability of the wind protection function deteriorates under external forces
Solution Approach 1:
The support function is segmented into two independent components: the curved guiding path that enables displacement and the second supporting surface that provides stability. This segmentation allows each component to perform its specific function optimally - the guiding path ensures ease of operation while the additional support surface guarantees reliability under external forces
3Manufacturing precision
If the guiding mechanism uses a simple slotted guide, then the manufacturing precision requirements are reduced, but the stability against forces from above deteriorates
Solution Approach 1:
By adding a second supporting surface oriented differently from the guiding path, the invention creates a multi-dimensional constraint system that enhances stability without requiring higher precision in the original guiding path. The additional support dimension compensates for the simpler, less precise single-dimensional guidance
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 configuration ensures improved stability and effective guidance of the wind deflection member between its rest and operating positions, effectively resisting forces from above and maintaining a secure wind protection structure, especially on front-side roof openings.
Implementation Method 1
The curved wind deflection member is associated with at least one spring unit to apply force and torque to the curved wind deflection member in the direction of the raised operating position
Implementation Method 2
a sliding block curved in the manner of a circular arc is displaceable therein, which sliding block is integrally connected to the respective wind deflection arm
Data Source
AI summary
A wind protection device having a curved wind deflection member on which a flexible wind protection structure is retained and which has at least one lateral wind deflection arm which can be displaced by means of a guiding mechanism in the vertical direction and in the longitudinal direction of the openable roof portion between a lower rest position and an upwardly deployed operating position. The guiding mechanism includes a linear force guide having a curved guiding path along which the wind deflection arm can be displaced in the longitudinal and vertical direction relative to the roof opening portion. The wind deflection arm is associated with at least one additional supporting surface which is supported on a stationary sliding surface extending in parallel to the guiding path.