Vehicle Roof Roller Blind Guide Legs for Expanded Transparent Area
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Solution Overview
Problem
Existing vehicle roofs with roller blind arrangements have a limited transparent see-through portion due to the installation of the roller blind reel below an opaque roof section, which restricts headroom and design aesthetics.
Innovation Solution
A laterally guided roller blind module with guide legs that extend beyond the transparent roof section, allowing the roller blind reel to be positioned above the cargo space, eliminating the need for space above the seats and enabling a larger transparent area without compromising design or headroom.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the roller blind reel is installed below an opaque roof section, then the roller blind arrangement can be properly positioned and function, but the transparent see-through portion of the vehicle roof is limited in size
Solution Approach 1:
The guide legs extend the guide rails laterally beyond the transparent roof section into the opaque roof area, moving the roller blind reel installation position to a different spatial dimension (laterally offset) while maintaining proper functional positioning. This allows the transparent area to be maximized without compromising the roller blind arrangement's operational requirements.
2Length of moving object
If the roller blind reel is installed below an opaque roof section, then the roller blind arrangement functions properly, but headroom for vehicle passengers is reduced
Solution Approach 1:
By laterally offsetting the roller blind reel from the guide rails through extending guide legs into the opaque roof area, the vertical space above passenger seats is freed up. The reel is repositioned in the lateral dimension rather than occupying vertical headroom space.
3Area of stationary object
If guide legs are used to extend guide rails laterally, then the transparent roof section can be maximized, but the structural complexity of the roller blind module increases
Solution Approach 1:
The roller blind module is segmented into distinct functional components: guide legs for lateral extension, guide rails for vertical support, and a cross member for reel mounting. This segmentation allows each component to perform its specific function efficiently while maintaining overall structural clarity and ease of assembly.
Solution Approach 2:
The guide legs serve multiple functions: they extend the guide rails laterally beyond the transparent roof section, provide structural support for the roller blind reel in the opaque area, and maintain proper alignment and spacing. This multi-functionality reduces the need for additional separate components.
Data Source
AI summary
A vehicle roof having a transparent roof section and a roller blind arrangement for selectively shading or at least partially not shading the transparent roof section, the roller blind arrangement having a roller blind web which is capable of being wound up to form a roller blind reel and which is provided with a guide tape on each of its edges arranged on either side of a vertical longitudinal center plane of the roof, each guide tape being guided in a respective guide rail, which is fixed to the roof. The roller blind arrangement comprises a roller blind module which has a cross member for the roller blind reel, the cross member extending in the transverse direction of the roof, and a guide leg on either side of the vertical longitudinal center plane of the roof, the guide legs being connected to the roof-fixed guide rails from below.