Vehicle Roller Blind Transverse Tension Guide Track
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Solution Overview
Problem
Existing roller blind devices for motor vehicle roofs face challenges in maintaining tension transversely to the pulling-out direction, leading to sagging, and require complex mechanisms for initial setup and adjustment.
Innovation Solution
The solution involves a guide track integrated into the guide section array, allowing the pulling/pushing means to be transversely movable for setting the function position, with a deflection pulley connected to the roller blind shaft for axial displacement, and drivers to adjust and fix the guide section array relative to the support frame, ensuring proper tensioning and simplifying the design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If elastically yielding connecting sections are used to tension the roller blind sheet, then the roller blind sheet is kept tensioned transversely to the pulling-out direction, but the device complexity increases and initial adjustment becomes complicated
Solution Approach 1:
The patent extracts the adjustment function from the main device structure by using a separate, removable guide section array that can be independently positioned and fixed. This separates the tensioning function from the main roller blind mechanism, reducing overall device complexity while maintaining tension stability.
Solution Approach 2:
The guide section array is pre-adjusted to the correct position before the roller blind sheet is installed. This preliminary positioning ensures proper tension is established from the start, eliminating the need for complex adjustment mechanisms during operation and simplifying the overall device design.
2Stability of the object's composition
If elastically yielding connecting sections are used for tensioning, then sagging is prevented, but the ease of manufacture decreases due to complex assembly requirements
Solution Approach 1:
The device is segmented into distinct modular components: the main roller blind assembly and the separate guide section array. This segmentation allows each component to be manufactured and tested independently, then assembled together, significantly improving ease of manufacture while maintaining the sagging prevention function through the guide array's transverse tensioning capability.
3Adaptability or versatility
If the guide section array is made adjustable after installation, then adaptability is improved, but the device complexity increases
Solution Approach 1:
The guide section array is designed to be adjusted and fixed in the correct position before the roller blind sheet is installed. This preliminary adjustment ensures proper tension and alignment are established from the start, providing adaptability without requiring complex adjustment mechanisms during operation.
Solution Approach 2:
Instead of making the guide section array permanently adjustable after installation (which would increase complexity), the patent inverts the approach by making it adjustable before installation and then fixed. This provides the necessary adaptability during setup while maintaining a simple, fixed structure during operation.
Data Source
AI summary
A roller blind device for a motor vehicle having a flexible roller blind sheet held windably and unwindably on a roller blind shaft, a dimensionally stable pulling-out section assigned to the roller blind sheet at an end area which is at the front in the pulling-out direction, at least one pulling/pushing apparatus continuously rotating and in operative connection with the roller blind shaft and to which the pulling-out section is fastened, and having lateral guide section arrays in which lateral edges of the roller blind sheet are guided. The pulling/pushing apparatus is guided in a guide track integrated in the guide section array and transversely movable together with the guide section array for setting of the function position, in particular before initial operation.