Window Regulator Deflection Element Radial Bearing Support
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Solution Overview
Problem
Existing window regulator assemblies for motor vehicles require large, material-intensive fastening elements to absorb bending moments, leading to increased production and assembly costs due to the need for extremely stable components to ensure permanent failure-free operation.
Innovation Solution
A window regulator assembly with a bearing point that supports the deflection element radially on its circumference, allowing for reduced material usage in fastening points by distributing forces through a base element and protruding support sections, which can be designed with different materials and anti-tilt devices to prevent tilting and enhance force transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If large diameters for the receptacle or fastening point are used to achieve the desired strength, then the reliability and strength of the fastening element are improved, but the material consumption and production costs increase
Solution Approach 1:
The fastening system is divided into multiple fastening elements distributed around the circumference of the deflection element, rather than using a single large fastening element. This segmentation allows the total fastening force to be distributed across multiple smaller elements, reducing the diameter and material consumption of each individual fastening element while maintaining overall strength and reliability.
2Reliability
If extremely stable fastening elements are used to guarantee failure-free function under increased bending load, then the reliability is improved, but the production and assembly costs increase
Solution Approach 1:
The system uses multiple standard fastening elements instead of fewer custom-designed extremely stable fastening elements. This segmentation allows the use of conventional, cost-effective fastening elements that can be easily manufactured and assembled, while the distributed arrangement ensures reliable failure-free function under bending loads.
Solution Approach 2:
The invention changes the arrangement parameters of the fastening elements (number, angular distribution, radial position) rather than changing the material properties or design complexity of individual fastening elements. This allows achieving high reliability under bending loads using standard, cost-effective fastening elements with appropriate geometric parameters.
3Strength
If large material thicknesses are used in the area of the fastening element to ensure stability under bending load, then the strength and reliability are improved, but the material consumption and production costs increase
Solution Approach 1:
The fastening system is segmented into multiple fastening elements that collectively bear the bending load. This allows the deflection element to have smaller local material thickness at each fastening point while the distributed arrangement of multiple fastening elements provides the necessary overall stability and load-bearing capacity under bending loads.
Data Source
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AI summary
A bearing site for a redirecting element, in particular for a rope pulley or a deflecting piece, at a component of a window lift assembly of a motor vehicle, wherein the redirecting element is disposed at the bearing site along a connection axis next to the component, said axis extending from the redirecting element to the component, and wherein the redirecting element redirects a driving force for moving a window pane of the motor vehicle. According to the invention, the bearing site supports the redirecting element at an outside that runs around the edge of the redirecting element at least in a direction perpendicular to the connection axis.