Folding Top Retaining Strip for Secure Headliner Connection
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Solution Overview
Problem
Existing folding top systems for motor vehicles are complicated to assemble, and there is a need for a solution that allows for a secure, defined connection between the headliner and the roof surface component while ensuring easy and inexpensive assembly.
Innovation Solution
A folding top design featuring a retaining strip with a mushroom-shaped or anchor-shaped anchoring section that hooks into a recess in the roof surface component, providing a secure and captive connection, and a tightening strip that prevents the 'balooning effect' by maintaining the top cover's taut position, with optional materials like plastic, aluminum, or steel for the retaining strip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex retaining strip system with L-shaped cross section and multiple components is used to secure the top cover, then the connection reliability is improved, but the assembly complexity increases
Solution Approach 1:
The retaining strip is divided into distinct functional zones: a first end region with anchoring geometry for securing to the roof surface component, and a second end area with U-profile for headliner connection. This segmentation allows each region to perform its specific function independently, simplifying the overall assembly process while maintaining connection reliability.
Solution Approach 2:
The first end region of the retaining strip is pre-formed with anchoring geometry (mushroom-shaped or anchor-shaped elements) that automatically engage with the roof surface component during installation. This preliminary preparation of the anchoring structure eliminates the need for complex fastening operations during assembly, reducing assembly complexity while ensuring reliable connection.
2Strength
If traditional fastening methods with multiple clips and screws are used to attach the top cover, then the connection strength is improved, but the manufacturing cost and assembly time increase
Solution Approach 1:
The retaining strip is designed to be self-fastening through its anchoring geometry in the first end region. The mushroom-shaped or anchor-shaped elements automatically engage with corresponding recesses in the roof surface component when the top cover is installed, eliminating the need for separate clips, screws, or other fastening components. This self-service mechanism maintains strong connections while dramatically simplifying assembly and reducing manufacturing costs.
3Stability of the object's composition
If the retaining strip is made rigid to ensure stable connection, then the connection stability is improved, but the adaptability to different roof geometries decreases
Solution Approach 1:
The retaining strip employs different structural characteristics in different regions: the first end region features rigid anchoring geometry (mushroom-shaped or anchor-shaped elements) that provide stable, fixed connections to the roof surface component, while the intermediate and second end regions maintain flexibility for adaptability. This local differentiation of structural properties allows the strip to simultaneously achieve connection stability where needed and geometric adaptability where required.
Data Source
Figure 1a~1b
Figure 2
Figure 3
AI summary
Folding soft top (1) for motor vehicles, wherein the folding soft top (1) can be moved between a closed position spanning a passenger compartment and an open position stored in a storage compartment, comprising a roof surface component (3), a soft top cover (2), a drawbar (7) of the soft top cover (2), an inner headliner (6) and a retaining strip (4), wherein the retaining strip (4) is arranged transversely to the longitudinal direction of the vehicle, wherein the retaining strip (4) engages with the roof surface component (3), wherein the retaining strip (4) has a first end region (A) which is hooked into the roof surface component (3), wherein the retaining strip (4) has a second end region (C) opposite the first end region (A), wherein the inner headliner (6) is connected to the second end region.