Window Regulator Rail Slider With Two-Point Pane Support
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Solution Overview
Problem
Conventional window regulator assemblies with single guide rails are prone to window pane tilting, leading to undesirable noise, especially in the end positions of the sliding motion, and require costly production methods.
Innovation Solution
A rail slider with U-shaped clamping legs and connecting legs, featuring a two-point support system with U-shaped support contours outside the receiving gap, ensuring stability and material efficiency, and a locking element for secure window pane insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single guide rail is used in the window regulator assembly, then the device complexity is reduced, but the window pane stability deteriorates causing tilting and noise
Solution Approach 1:
The single guide rail is segmented into two separate guide rails that are spaced apart from each other. The rail slider has two corresponding guide areas that engage with these two guide rails, creating a more stable support structure for the window pane while maintaining relatively simple device complexity
Solution Approach 2:
The solution transitions from a single-point contact (one guide rail) to a distributed multi-point contact system (two spaced guide rails). This dimensional change in the support structure provides better stability and prevents window pane tilting without significantly increasing overall device complexity
2Manufacturing precision
If conventional production methods are used for the rail slider, then manufacturing precision can be achieved, but the ease of manufacture deteriorates due to costly production processes
Solution Approach 1:
The rail slider is manufactured as an injection-molded plastic component, replacing more expensive metal or machined alternatives. This cost-effective manufacturing method achieves sufficient precision for the application while significantly reducing production costs
Solution Approach 2:
The design parameters of the rail slider are optimized for injection molding, including appropriate wall thicknesses, draft angles, and feature placement. This allows the component to be manufactured with adequate precision using low-cost plastic injection molding processes
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 prevents window pane tilting and noise, while achieving cost-effective and stable window regulation with minimal material usage, allowing easy demolding and tool optimization.
Implementation Method 1
The second clamping leg (5b) of the rail slider (5) can be moved elastically in relation to the first clamping leg (5a), in particular by means of the at least one connecting leg (5c)
Data Source
AI summary
A window regulator assembly for an adjustable window pane of a motor vehicle, comprising a rail slider movably guided on a guide rail with two clamping legs, between which a receiving gap for the window pane is formed. Mutually spaced support contours for the window pane are molded to one of the clamping legs on both sides of the receiving gap, in particular to form a two-point support.