Rolled Sheet Holder with Flat End Region Clamping
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Solution Overview
Problem
Existing methods for rolling up sheets result in curled edge regions, which affect the appearance when unrolled and increase the risk of damage due to hard securing parts during transportation.
Innovation Solution
A method involving moving one pair of opposite edges towards each other to create a flat end region and a curved center region, which is then rolled up with the flat end region supported on a holder's surface and clamped to prevent curling and damage, using a holder with a support surface, bearing part, and clamping part to secure the rolled-up sheet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the sheet is rolled up tightly with edge regions inside the rolled-up sheet, then compact packaging is achieved, but the edge regions curl up and hard securing parts increase damage risk
Solution Approach 1:
The sheet is divided into three distinct regions: first edge regions, a center region, and second edge regions. The first edge regions are folded back onto the center region to form a protective flat package, separating the vulnerable edges from the rolling process. This segmentation allows the center region to be rolled compactly while the protected edges remain flat and secure.
Solution Approach 2:
The first edge regions are extracted from the rolling process by folding them back onto the center region before rolling. This removes the problematic edge regions from the curved rolled-up structure where they would otherwise curl and cause damage, while still allowing compact packaging of the main sheet body.
2Volume of moving object
If the sheet is folded double without a sharp folding line, then space is saved, but the sheet remains fragile and edge regions curl up
Solution Approach 1:
Instead of a simple double fold, the sheet is segmented into multiple regions with the first edge regions folded back separately. This creates a more complex but superior structure where edges are protected without requiring a sharp folding line, maintaining flexibility while preventing curling and damage.
3Reliability
If hard securing parts are provided in edge regions, then the sheet can be secured during transportation, but the risk of damage to the sheet increases
Solution Approach 1:
The first edge regions containing securing parts are extracted from the rolled-up structure by folding them back onto the center region. This removes the harmful interaction between hard securing parts and the sheet body during rolling and transportation, while still maintaining the securing function at the protected edges.
Solution Approach 2:
The first edge regions are folded back onto the center region to create a protective layer before the rolling process begins. This beforehand cushioning protects the sheet from damage by hard securing parts that may be present in the edge regions, while still allowing effective transportation security.
Data Source
AI summary
The invention relates to an assembly of a rolled-up sheet and a holder. The rolled-up sheet has edge regions which touch each other near a first pair of opposite edges, wherein a flat end region is formed. A curved center region is rolled around a longitudinal axis to form a rolled-up end region. The holder is provided with a first support surface for supporting the flat end region of the rolled-up sheet, and with a bearing part for supporting one of the first pair of opposite edges. The holder furthermore has a clamping part which can be fixed in a holding position with respect to the first support surface in which the rolled-up sheet can be clamped between the clamping part and the first support surface.