Segmented Mounting Rail for Uniform Seal Pressure
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Solution Overview
Problem
Existing mounting rails for motor vehicle door sealing strips lack sufficient flexibility in modern door geometries, particularly at the transition area to the window frame, leading to difficulties in aligning spring tongues due to material fatigue, which results in uneven pressure distribution and increased maintenance costs.
Innovation Solution
A mounting rail with a continuous web on one side and openings between the web and attachment devices, providing enhanced flexibility and ensuring proper alignment and uniform pressure distribution, made from plastic material with elongated openings that converge towards the attachment devices to optimize stress distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mounting rails are made with serpentine shape to increase flexibility, then the mounting rail can fit complicated door contours, but material fatigue causes spring tongues to misalign and pressure distribution becomes uneven
Solution Approach 1:
The mounting rail is divided into multiple individual segments instead of a continuous serpentine strip. Each segment is independently mounted on contour elements, which prevents cumulative misalignment and allows each segment to maintain its shape independently, reducing the impact of material fatigue on overall alignment
Solution Approach 2:
The mounting rail uses a composite structure combining plastic material with metal reinforcement elements (spring plates or steel strips) to enhance dimensional stability and resistance to material fatigue while maintaining the necessary flexibility for complicated door contours
2Reliability
If mounting rails are made rigid to maintain structural stability, then alignment is maintained, but the mounting rail cannot adapt to complicated door geometries
Solution Approach 1:
By segmenting the mounting rail into multiple independent sections that can be individually positioned and mounted, the system achieves both local flexibility to adapt to complicated door geometries and overall structural stability through precise alignment of each segment
Solution Approach 2:
The mounting rail system incorporates adjustable and movable elements that allow each segment to be dynamically positioned and secured at optimal locations, enabling adaptation to various door contours while maintaining stable alignment through controlled mounting positions
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 allows for easy installation and maintains uniform pressure distribution over time, reducing the need for frequent replacements and lowering operational costs by minimizing the impact of material fatigue, thus improving the flexibility and reliability of the sealing strip application system.
Implementation Method 1
the flexibility attributable to the serpentine shape makes it possible to lay only a single continuous mounting rail over the contour elements
Implementation Method 2
the legs and webs of the serpentine-shaped strip form spring tongues. The sealing strips to be applied are set down onto the spring tongues
Data Source
AI summary
The invention relates to a mounting rail (8) for mounting and positioning a seal, having attachment devices (12) disposed on a longitudinal side (15) of the mounting rail and each separated from each other by an interruption (13). In order to propose a mounting rail comprising high flexibility allowing simple insertion of the seal even after a long period of use and allowing more uniform pressure distribution when pressing on the seal, the invention proposes that the mounting rail (8) comprises a web (19) running through on the other longitudinal side (16), and at least one opening (1ha-c) is disposed in the mounting rail between the web and each attachment device.