Vehicle Roof Roller Blind Guide Strip Infeed for Precise Centering
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Solution Overview
Problem
Existing roller blind arrangements for vehicle roofs often require guide strips to enter guide tracks after the roller blind web is unwound, making it difficult to center the roller blind web before installation, and this can complicate the installation process.
Innovation Solution
The roller blind arrangement features guide rails with clean-cut ends and a transverse frame part incorporating strip infeed elements with retaining ribs and support walls, allowing the roller blind web to be centered during installation, and includes sealing elements to prevent water intrusion, with locking elements for precise positioning and elastic support walls to compensate for tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If guide rails are made with clean-cut ends and connected parallel to their length, then installation simplicity and cost-effectiveness are improved, but the ability to center the roller blind web before guide strips enter guide tracks deteriorates
Solution Approach 1:
The transverse frame part is equipped with strip infeed elements that form infeed tracks for guide strips before the guide rails are installed. This preliminary structure allows the roller blind web to be centered during installation before the guide strips enter the guide tracks, resolving the contradiction by providing centering capability in advance without requiring complex guide rail configurations.
2Manufacturing precision
If additional fixing components are used to center the roller blind web, then centering precision is improved, but device complexity and cost increase
Solution Approach 1:
The transverse frame part integrates strip infeed elements with retaining ribs that automatically guide and center the roller blind web during installation. The structure serves itself by incorporating the centering function directly into the frame part, eliminating the need for separate fixing components or additional centering mechanisms, thus reducing device complexity while maintaining precision.
3Manufacturing precision
If guide rails are connected perpendicular to their length, then centering capability is improved, but installation complexity and time increase
Solution Approach 1:
The strip infeed elements are pre-integrated into the transverse frame part, creating ready-to-receive infeed tracks before guide rail installation. This preliminary preparation allows guide rails to be connected in any orientation (including parallel to their length) without sacrificing centering capability, as the centering function is already established by the infeed elements, thereby reducing installation time and complexity.
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
This solution simplifies and cost-effectively centers the roller blind web during installation, reduces the need for additional fixing components, and provides immediate feedback on correct assembly, while ensuring watertight seals in the vehicle's wet areas.
Implementation Method 1
the support walls are deformable, in particular elastically. By deformation of the support walls, tolerances between the strip infeed elements and the guide rails can be compensated.
Data Source
AI summary
A vehicle roof roller blind arrangement having roller blind web, windable to form a roller blind fabric roll in a winding area, and two guide rails disposed on either side of the web and which have respective guide tracks in which lateral guide strips of the web are guided, the guide rails connected to each other via a transverse frame part in which the winding area for the roller blind web is formed. Each guide rail has a clean-cut end adjacent to the transverse frame part. The transverse frame part has a strip infeed element for each guide rail, the strip infeed elements forming infeed tracks for the guide strips, each infeed track being defined by at least one inner retaining rib and at least one outer retaining rib for the guide strip, and the infeed tracks ending in the guide tracks of the guide rails.