Frameless Door Guide Rail Adjustment for Window Inclination Tolerance
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Solution Overview
Problem
Frameless vehicle doors experience issues with window panes protruding from the door seal due to production tolerances, leading to increased friction and wear, requiring complex and space-consuming tolerance compensation mechanisms that complicate installation and require specialized tools.
Innovation Solution
A compact adjusting device with a threaded bolt and nut arrangement allows for oblique adjustment of the guide rail relative to the counter bearing, enabling tolerance compensation without needing to remove the door inner panel and using standard tools, thus simplifying the installation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a double-threaded bolt with axial accessibility is used for tolerance compensation, then the guide rail inclination can be adjusted, but the door inner panel must be removed and specialized tools are required
Solution Approach 1:
The patent changes the access direction from axial (parallel to adjusting direction) to transverse (perpendicular to adjusting direction). The tool access is provided through the side of the guide rail rather than from the axial end, allowing adjustment without removing the door inner panel and eliminating the need for specialized combination tools.
Solution Approach 2:
The patent introduces a transverse access mechanism as an intermediary approach. Instead of directly accessing the double-threaded bolt axially, a tool receiver is provided on the side of the guide rail that allows transverse tool access, simplifying the installation process while maintaining the adjustment functionality.
2Manufacturing precision
If a double-threaded bolt with axial accessibility is used for tolerance compensation, then the guide rail inclination can be adjusted, but specialized combination tools are required
Solution Approach 1:
The patent changes the tool access direction from axial to transverse. By providing a tool receiver on the side of the guide rail, standard tools can be used from the transverse direction rather than requiring specialized combination tools for axial access.
Solution Approach 2:
The patent replaces expensive specialized combination tools with inexpensive standard tools. The transverse access design allows the use of common screwdrivers or similar tools rather than requiring proprietary combination tools designed for axial access only.
3Ease of operation
If a large gear mechanism is used to achieve perpendicular tool access, then the access direction can be changed, but the device complexity increases
Solution Approach 1:
The patent extracts the complex gear mechanism from the design and replaces it with a simple transverse access hole or receiver in the guide rail. This allows perpendicular tool access without requiring any mechanical transmission elements, significantly simplifying the overall device structure.
Solution Approach 2:
Instead of using a gear mechanism to convert axial tool motion into transverse adjustment motion, the patent inverts the approach by providing direct transverse access to the adjustment mechanism. The tool applies force directly in the transverse direction without any mechanical conversion, eliminating the need for gears.
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 structurally simple and efficient method for adjusting the window pane inclination, reducing friction and wear while minimizing installation complexity and tool requirements, resulting in a more reliable and cost-effective frameless vehicle door design.
Implementation Method 1
A compact adjusting device with a threaded bolt and nut arrangement allows for oblique adjustment of the guide rail relative to the counter bearing
Data Source
AI summary
A device for a frameless vehicle door includes a counter bearing, a guide rail mounted thereon for a window regulator, and an adjusting device for inclining the guide rail along an adjusting direction oriented obliquely to the counter bearing. The adjusting device can be actuated by a tool. An access direction of the tool is oriented obliquely to the adjusting direction. The adjusting device has at least two adjusting components that can be moved relative to one another, namely, a threaded bolt oriented along the adjusting direction and at least one threaded nut screwed thereon. One of the adjusting components is fixed to the guide rail or the counter bearing for conjoint rotation, and the other is rotatably mounted. The rotatably mounted adjusting component has a drive contour and can be driven by to axially adjust the adjusting components with respect to one another along the adjusting direction.