Window Pane Clamping Driver for Rigid High-Speed Fixation
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Solution Overview
Problem
Existing window pane support systems in motor vehicles, particularly for laminated safety glass, face challenges in distributing forces effectively, leading to excessive stress on the glass material and limited rigidity during high-speed travel due to reliance on door sill seals for support.
Innovation Solution
A driver element with inner and outer clamping elements forms a receiving gap for the window pane, utilizing a disk spring or tensioning plate to distribute clamping force evenly, eliminating the need for door sill seal support and ensuring the pane is securely fixed without excessive stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a door sill seal is used to support the window pane, then the window pane can be mounted flexibly, but the rigidity during high-speed travel is limited
Solution Approach 1:
The support function is segmented between the door sill seal (for flexible mounting) and the driver element with clamping jaws (for rigid support). The window pane is divided into regions supported by different mechanisms, allowing each to optimize its specific function.
Solution Approach 2:
The invention combines the flexible mounting capability of the door sill seal with the rigid support of the driver element in a single integrated system. Both support mechanisms work simultaneously on the window pane to provide both flexibility and rigidity.
2Strength
If clamping force is applied to secure the window pane, then the window pane is firmly fixed, but excessive stress on the glass material occurs
Solution Approach 1:
The clamping force is segmented and distributed through multiple contact points including the inner clamping jaw, outer clamping jaw, and support surface. This distribution prevents concentration of stress at single points on the glass material.
Solution Approach 2:
A plastics insert is introduced as an intermediary element between the clamping jaws and the window pane. This insert distributes the clamping force more evenly across the glass surface and prevents direct concentrated loading that could cause stress.
3Device complexity
If a single clamping jaw is used, then the device structure is simple, but the window pane cannot be securely fixed without excessive stress
Solution Approach 1:
The clamping function is segmented into multiple independent clamping jaws (inner and outer) that can apply force at different locations on the window pane. This segmentation allows secure fixation while distributing stress through the glass material.
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 provides a robust and rigid fixation of the window pane, preventing excessive stress and ensuring clean closure at high speeds by distributing forces through multiple contact points, enhancing the overall stability and support of the window pane.
Implementation Method 1
The outer clamping element comprises a spring element which is arranged and designed so as to exert a clamping force, induced via the tensioning element, onto the window pane located in the receiving gap in the installed state
Data Source
AI summary
A driver element for securing a window pane of a motor vehicle to a guide device of a window lifter. The driver element comprises an inner clamping element which comes into contact with the window pane face facing the interior of the motor vehicle, an outer clamping element which comes into contact with the window pane face facing away from the interior, a main part for attaching the driver element to the guide device, and a tensioning element which secures the outer clamping element to the main part. The inner clamping element and the outer clamping element form a single receiving gap for the window pane. The outer clamping element comprises a spring element arranged so as to exert a clamping force induced via the tensioning element onto the window pane located in the receiving gap.