Frameless Door Window Slider Assembly for Precise Glass Alignment
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Solution Overview
Problem
Existing window regulator systems for frameless vehicle doors face challenges in accurately and efficiently positioning the side-glass pane during assembly, requiring excessive manual adjustments due to oversized mounting holes and lack of built-in locating features.
Innovation Solution
A window regulator slider assembly with integrated resilient spring tabs that provide one-way or three-way constraints to guide the glass into nominal position, minimizing manual adjustments and accommodating manufacturing tolerances, while allowing controlled post-installation adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If oversized mounting holes are used to facilitate alignment during installation, then ease of operation is improved, but manufacturing precision deteriorates
Solution Approach 1:
The spring tabs are pre-formed on the glass retainer with specific geometries (contoured surfaces, cam slots) that automatically guide the glass pane into the correct position during installation. This preliminary positioning action eliminates the need for oversized holes while maintaining ease of installation.
Solution Approach 2:
The spring tabs act as an intermediary mechanism between the glass pane and the retainer. They provide a mediating structure that translates the insertion motion into precise positioning, accommodating both ease of operation and manufacturing precision requirements.
2Adaptability or versatility
If manual adjustment mechanisms are added to allow post-installation repositioning, then adaptability is improved, but device complexity increases
Solution Approach 1:
The positioning and adjustment functions are merged into the spring tab structure itself. The same spring tabs that provide initial positioning also enable post-installation adjustment through their cam slot geometry, eliminating the need for separate adjustment mechanisms.
Solution Approach 2:
The spring tabs are designed to be self-adjusting through their resilient nature and cam slot geometry. The system allows the glass to be repositioned by simple manual manipulation of the spring tabs without requiring additional tools or complex adjustment procedures.
3Manufacturing precision
If spring tabs with one-way constraints are used to guide glass positioning, then manufacturing precision is improved, but ease of operation deteriorates
Solution Approach 1:
The spring tabs utilize elastic deformation to transition from a constrained state during positioning to a flexible state during adjustment. The dynamic behavior of the spring material allows the system to provide precise positioning while remaining easy to manipulate during installation and maintenance.
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
Enables precise and repeatable glass alignment, reducing installation time and effort, and ensuring consistent fit and sealing performance in frameless doors.
Implementation Method 1
one or more resilient spring tabs protruding from the inside glass retainer
Data Source
AI summary
A window regulator slider assembly for a frameless vehicle door is disclosed. The assembly includes a slider base configured to traverse along at least one guide rail, and an inside glass retainer coupled to the slider base, and an outside glass retainer positioned opposite the inside glass retainer to clamp either a side-glass pane or a glass holder bracket affixed to the side-glass pane between them. The inside glass retainer includes one or more resilient spring tabs configured to engage either the lower edge of a side-glass pane or a glass holder bracket bonded to the side-glass pane. The spring tabs are arranged in fore-side and aft-side tab groups, with the fore-side tab group providing vertical constraint in a downward direction, and the aft-side tab group providing fore-aft and vertical constraints. Each spring tab is shaped to engage with corresponding contours along the lower edge of the side-glass pane or the glass holder bracket, enabling accurate initial positioning and minimizing post-installation adjustment.