Vehicle Roof Blind Guide Rail Assembly to Prevent Fabric Sagging
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Solution Overview
Problem
Conventional vehicle roof blind assemblies are prone to sagging and deformation due to temperature changes, leading to poor performance in windy conditions, as the fabric blind softens and longitudinal insert portions can escape from the slide grooves, causing friction issues and uneven sliding.
Innovation Solution
A vehicle roof blind assembly with guiding devices that include a guide insert projecting into the lower slide groove and an angled part of the fabric blind, ensuring the fabric blind is pulled taut and reducing sagging, using a slide member with a connecting and slide portion, and a fabric blind with interlocking stitch lines for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the fabric blind material is made flexible to ensure comfort and ease of operation, then the ease of operation is improved, but the rigidity decreases causing the blind to sag and deform under high temperature
Solution Approach 1:
The patent introduces guide inserts as intermediary components that project into the lower slide groove and engage with the fabric blind's longitudinal insert portions. These guide inserts act as mediators between the fabric blind and the guide rail, providing structural support and preventing sagging while maintaining the fabric's flexibility for easy operation.
Solution Approach 2:
The longitudinal insert portion of the fabric blind is divided into multiple segments including a first insert part, a second insert part, and an angled part. This segmentation allows different portions to perform specific functions: the first insert part engages with the guide insert, the second insert part provides structural support, and the angled part facilitates smooth movement within the slide groove.
2Ease of operation
If the longitudinal insert portions are made resilient to allow smooth sliding in the lower slide groove, then the ease of operation is improved, but the strength decreases causing deformation and potential escape from the groove under wind load
Solution Approach 1:
The longitudinal insert portion is constructed as a composite structure combining resilient material for smooth sliding with reinforced sections (first insert part, second insert part, and angled part) that provide enhanced strength. This composite design allows the insert to simultaneously achieve ease of operation through resilience and resistance to deformation through structural reinforcement.
Solution Approach 2:
The guide inserts are pre-positioned in the lower slide groove to engage with the longitudinal insert portions before operation. This preliminary positioning ensures that the fabric blind is properly guided and supported from the start, preventing deformation and escape under wind load while maintaining smooth sliding operation.
3Ease of operation
If the fabric blind is allowed to move freely to ensure ease of operation, then the ease of operation is improved, but the reliability decreases causing vigorous shaking and potential damage during vehicle movement
Solution Approach 1:
The guide inserts serve as intermediary components that provide continuous guidance and support to the fabric blind during movement. By engaging with the longitudinal insert portions, they prevent excessive movement and vigorous shaking while allowing smooth operation, thereby enhancing reliability without compromising ease of use.
Solution Approach 2:
The system is designed to be dynamic, allowing the fabric blind to move freely for ease of operation while the guide inserts provide adaptive guidance. The guide inserts engage with the longitudinal insert portions to prevent excessive movement during vehicle motion, ensuring reliable operation under varying conditions.
Data Source
AI summary
A vehicle roof blind assembly includes a guide rail having upper and lower slide grooves, a pull rod, and a slide member having a slide portion extending slidably into the upper slide groove. A fabric blind has a transverse end portion connected to the pull rod, and a longitudinal insert portion received slidably in the lower slide groove and including first and second insert parts, and an angled part interconnecting the first and second insert parts. A guiding device is connected to the slide member, and includes a guide insert projecting into the lower slide groove and into the angled part between the first and second insert parts so as to push the angled part transversely of the fabric blind and inwardly of the lower slide groove.