Vehicle Roller Blind T-Shaped Band Element Winding Diameter
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Solution Overview
Problem
In vehicle roller blind arrangements, the large diameter of the roller blind winding due to the thickness of the roller blind web leads to significant frictional forces, requiring high actuation forces, which is a challenge in design and operation.
Innovation Solution
A T-shaped or Y-shaped band element with a smaller material thickness, independent of the roller blind web, is used, coupled with a guide element, allowing for a smaller winding diameter and adjustable frictional properties, enabling secure bonding and reduced actuation forces through adhesive or stitched connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the roller blind web is used directly to form the winding, then the structure is simple, but the winding diameter becomes very large due to the thickness of the roller blind web
Solution Approach 1:
The system is divided into two functional components: the roller blind web (providing the遮蔽 function) and the band element (providing the winding structure). The band element is separated from the roller blind web and forms the winding together with the guide element, while the roller blind web is attached to the band element but does not participate in the winding formation. This segmentation allows the winding diameter to be determined by the thin band element rather than the thick roller blind web.
Solution Approach 2:
The band element acts as an intermediary component between the roller blind web and the guide element. It provides a thin, windable surface that mediates the interaction between the thick roller blind web and the guide element, enabling the formation of a compact winding with small diameter while still supporting the roller blind web.
2Adaptability or versatility
If the roller blind web thickness determines the winding diameter, then the material selection is flexible, but the frictional forces become very large requiring high actuation forces
Solution Approach 1:
The functional separation allows the band element to be optimized for low-friction winding properties with thin thickness, while the roller blind web can be selected independently based on遮蔽 performance requirements. This segmentation decouples the frictional force generation from the material selection flexibility.
Solution Approach 2:
The thickness parameter of the band element is changed to be much smaller than the roller blind web thickness. This parameter change directly reduces the winding diameter and consequently the frictional forces, while the roller blind web material and thickness can be independently optimized for their specific function.
3Force
If a thin band element is used to reduce winding diameter, then the actuation forces are reduced, but the bonding security between components may be compromised
Solution Approach 1:
The band element is securely combined with both the roller blind web and the guide element through attachment mechanisms. This merging of components ensures that the thin band element maintains sufficient bonding security to transmit forces reliably, while still providing the benefits of reduced winding diameter and actuation force.
Data Source
AI summary
A vehicle roller blind arrangement, with a roller blind web that can be wound or unwound in an extension direction, a band-shaped guide element that extends along the extension direction and is guidable in a guide rail, which can be coupled fixedly to a vehicle, in such a manner that said guide element extends parallel to the roller blind web, and a band element that extends along the extension direction and is arranged between the roller blind web and the guide element and, on a first longitudinal side, is coupled fixedly to the roller blind web and, on a second longitudinal side, is coupled fixedly to the guide element. The band element has a T-shaped or Y-shaped cross section, is formed of a different material from the roller blind web, and has a smaller material thickness than the roller blind web. In addition, the invention relates to correspondingly configured subassemblies and roof arrangements.