Sunshade Device With Folded Edge Guide For Easy Assembly
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Solution Overview
Problem
Conventional sunshade devices for vehicles are complicated to assemble and restore, especially when the shade's side edges are removed from the guide rails due to external forces, requiring intricate folding and alignment processes.
Innovation Solution
A sunshade device design featuring folding introduction parts on the shade's edges, multifunctional stoppers with a folding guide groove, and slide shoes that facilitate easy assembly and restoration by allowing the shade edges to be gradually folded and guided into place, with stoppers preventing removal from the guide rails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the opposite side edges of the shade are folded and guided by the shade guide rail, then the side edge is difficult to be removed from the guide rail, but the assembling work becomes complicated
Solution Approach 1:
The folded introduction part is formed in advance on the shade before assembly. This preliminary folding action eliminates the need to fold the side edges during the assembly process, while still providing the retention function that prevents the side edges from being removed from the guide rails.
Solution Approach 2:
The side edge of the shade is divided into two functional parts: the folded introduction part that provides retention by engaging with the guide rail, and the main body portion that provides the shading function. This segmentation allows each part to perform its specific function independently.
2Reliability
If the opposite side edges of the shade are folded and guided by the shade guide rail, then the side edge is difficult to be removed from the guide rail, but the restoring work becomes complicated
Solution Approach 1:
The folded introduction part is pre-formed on the shade, so when the side edge becomes detached, it can be easily restored by simply guiding the pre-formed folded part back into the guide rail, eliminating the need for complex folding operations during restoration.
3Ease of manufacture
If the folded introduction part is provided on the shade, then the assembly process is simplified, but the device structure becomes more complex
Solution Approach 1:
The multifunctional stopper combines multiple functions into a single component: it serves as both a stopper to prevent over-travel and as a folding guide through the folding guide groove. This merging reduces the need for separate components, thereby simplifying the overall device structure despite the added folded introduction part on the shade.
Data Source
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AI summary
A sunshade device (1A) includes a pair of shade guide rails (2) across an indoor opening (R2); a shade of which opposite side edges are guided by the shade guide rails (2); and a winding shaft (5) rolling up the shade, wherein the opposite side edges of the shade are guided by the shade guide rails (2) with the side edges being folded after a folding stroke whose folded width is gradually increased toward a front end of the shade when the shade (3) is drawn out from the winding shaft (5), each of the opposite side edges of the shade is provided with a folded introduction part formed by folding a side edge portion (3a) of the shade (3) and connecting the folded side edge portion (3a) to a main body portion of the shade (3), and the folded introduction part is formed in a predetermined length from the front end of the shade (3) in an open/close direction of the shade (3).