Vehicle Sun Blind System with Deflecting Roller Storage
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Solution Overview
Problem
Conventional sun blind systems require a significant amount of vertical space when retracted, as most guide bands and blind bodies need to be stowed in a compact area, leading to inefficient use of space.
Innovation Solution
The sun blind system incorporates a receiving channel with two guide sections connected by a deflecting section, allowing the blind to be stored in two layers, reducing the required installation space along the guide rail extension direction and achieving a compact design vertically, using synthetic materials and a deflecting roller to minimize friction and optimize space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the sun blind is retracted using conventional winding mechanisms, then the longitudinal space is reduced, but the vertical space required increases significantly
Solution Approach 1:
The patent changes the storage dimension from vertical stacking to longitudinal coiling within a horizontally oriented receiving channel. The guide rail and receiving channel are arranged horizontally beneath the sunroof, allowing the blind to be stored in the longitudinal direction rather than requiring vertical space.
Solution Approach 2:
The receiving channel is divided into two guide sections connected by a deflecting section, creating a path that allows the guide band to coil horizontally. This segmentation enables the blind to be stored in layers within the horizontal space available in the vehicle's longitudinal direction.
2Length of moving object
If the receiving channel is designed with a small radius deflecting section, then the longitudinal installation space is reduced, but the guide band experiences increased bending stress
Solution Approach 1:
The patent optimizes the radius parameter of the deflecting section to achieve a compromise between compactness and mechanical stress. The radius is selected to be small enough to reduce longitudinal space but large enough to keep bending stresses within acceptable limits for the guide band material.
Solution Approach 2:
A deflecting roller is introduced as an intermediary element in the deflecting section to reduce friction and guide the guide band smoothly during retraction and extension, minimizing bending stress while maintaining compact dimensions.
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 design reduces the vertical space required for storage by half, allowing for a more compact and efficient retraction mechanism while maintaining sufficient headroom for vehicle occupants.
Implementation Method 1
the friction in the region of the deflecting section can be considerably reduced, in particular when the deflecting roller is rotatably mounted with low friction
Data Source
AI summary
The invention relates to a sun blind system for a motor vehicle, having two guide rails, in each of which a guide band is received, and a flat blind body which is connected to the two guide bands, wherein a receiving channel is provided on each guide rail for the corresponding guide band, said channel having two guide sections which are connected together by a deflecting section.