Window Regulator Tensioner with Spring-Loaded Adjusting Sleeve
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Solution Overview
Problem
Existing window regulators in vehicles face issues with cable elongation due to aging, leading to inaccuracy and premature wear, and require a mechanism to maintain optimal tension for accurate operation, especially in frameless doors.
Innovation Solution
A tensioner system comprising a first and second tensioner support, a spring, and an adjusting sleeve that adjusts to compensate for cable elongation, ensuring consistent tension through a biasing force and irreversible lengthening to absorb slack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a play compensation mechanism is employed to absorb cable elongation, then cable tension accuracy is improved, but device complexity increases due to multiple components
Solution Approach 1:
The patent combines the tensioning function and compensation function into a single integrated tensioner assembly. The spring mechanism is built-in to automatically compensate for cable elongation, eliminating the need for separate compensation devices and reducing overall system complexity while maintaining accurate cable tension.
Solution Approach 2:
The tensioner is designed with an automatic spring-loaded mechanism that self-adjusts to compensate for cable elongation over time. The spring automatically takes up slack as the cable stretches during aging, maintaining proper tension without requiring external adjustment mechanisms or multiple separate components.
2Measurement precision
If cable tension is increased to prevent slack, then operational accuracy is improved, but component wear increases and efficiency decreases
Solution Approach 1:
The spring-loaded tensioner dynamically adjusts cable tension parameters to maintain optimal force levels. Rather than using excessive fixed tension, the spring mechanism provides just enough tension to eliminate slack while avoiding over-tensioning that would cause premature wear, adapting to the cable's condition over time.
Solution Approach 2:
The spring mechanism acts as a cushioning element that absorbs excess force and prevents sudden tension spikes. By providing gradual, controlled tension rather than rigid high tension, the spring protects cable and regulator components from shock loads and reduces wear while maintaining operational accuracy.
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 tensioner system effectively maintains optimal cable tension, improving the accuracy and longevity of window regulator operation by absorbing elongation and maintaining seal integrity in frameless doors.
Implementation Method 1
a spring disposed between the first tensioner support and the second tensioner support
Data Source
AI summary
A tensioner for a window regulator for raising and lowering a window of a vehicle, including: a first tensioner support; a second tensioner support; a spring disposed between the first tensioner support and the second tensioner support; and an adjusting sleeve configured to engage features of the first tensioner support as the second tensioner support is moved away from the first tensioner support due to a biasing force of the spring.