Vehicle Door Curtain Sub-Curtain Assembly for Gap Occlusion
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Solution Overview
Problem
Existing door curtain assemblies in vehicles often fail to occlude certain regions due to the shape of sliding type doors, leaving gaps that allow sunlight and interior exposure.
Innovation Solution
A door curtain assembly with a sub-curtain that is deployed after the main curtain, featuring a sub-housing, sub-fabric, and sub-shade bar, which are interlocked with the main shade bar to cover the entire door glass, including areas not blocked by the main curtain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single main curtain is deployed, then the structure is simple and easy to operate, but certain regions of the door glass cannot be fully occluded due to door shape characteristics
Solution Approach 1:
The curtain system is divided into two independent segments: a main curtain for general occlusion and a sub-curtain for covering remaining exposed regions. The sub-curtain is deployed after the main curtain to specifically address areas that the main curtain cannot cover due to door shape characteristics, thereby achieving complete occlusion while maintaining operational simplicity.
2Reliability
If a sub-curtain is added to achieve complete occlusion, then occlusion effectiveness is improved, but the device structure becomes more complex
Solution Approach 1:
The sub-curtain is nested within the main curtain assembly structure. The sub-curtain housing is positioned inside the main curtain housing, and the sub-curtain is deployed from within the main curtain system. This nested arrangement allows the dual-curtain system to achieve complete occlusion while minimizing structural complexity and space requirements.
Solution Approach 2:
The main curtain and sub-curtain are combined into a single integrated assembly that operates together. Both curtains share common mounting structures and control mechanisms, allowing them to function as a unified system for achieving complete door glass occlusion without requiring separate independent installations.
3Stability of the object's composition
If the sub-curtain is interlocked with the main shade bar, then coordinated deployment is achieved, but the mechanical structure becomes more complex
Solution Approach 1:
The sub-curtain is configured to be deployed after the main curtain has been deployed. The interlocking mechanism with the main shade bar ensures that the sub-curtain deployment is triggered by and coordinated with the main curtain's position, allowing the system to achieve stable coordinated deployment through a relatively simple sequential activation mechanism.
Data Source
AI summary
A door curtain assembly having a sub-curtain unit is provided and includes a main fabric that is wound in a trim of a vehicle door; and a main shade bar that is installed in an upper end of the main fabric and fixed to a hook provided in the door when the main fabric is deployed. A sub-curtain part is additionally deployed after the main curtain part is deployed. The sub-curtain part includes a sub-housing having a first side hinge-coupled to the door and a second side interlocked with ascending or descending of the main shade bar. Additionally, a sub-fabric is wound in the sub-housing and a sub-shade bar is installed in an end portion of the sub-fabric in a length direction of the sub-housing.