Poster Winder Housing and Extraction Opening for Safe Roll Removal
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Solution Overview
Problem
Existing sheet winding devices are complex, bulky, and unsafe for general public use, often requiring professional knowledge and frequent maintenance, posing risks of injury.
Innovation Solution
A compact poster winder with a cylindrical winding chamber, intuitive extraction opening, and safety features like a finger insertion notch and a safety zone devoid of drive means, ensuring easy and safe operation without maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex professional winding mechanisms are used, then winding functionality is achieved, but device complexity increases and safety decreases
Solution Approach 1:
The device is segmented into distinct functional zones: a winding chamber for the rolling mechanism, an introduction slot for sheet insertion, and an extraction opening for roll removal. This segmentation isolates the complex winding mechanism within the enclosed chamber, protecting users while maintaining functionality.
Solution Approach 2:
The extraction opening acts as an intermediary interface between the user and the winding chamber. It allows users to access and remove rolls without direct exposure to the internal winding mechanisms, thereby maintaining safety while enabling ease of operation.
2Productivity
If automatic insertion and ejection mechanisms are implemented, then productivity increases, but device complexity and cost increase
Solution Approach 1:
The device employs self-service mechanisms where the user manually inserts the sheet through the introduction slot and manually extracts the finished roll through the extraction opening. This eliminates the need for complex automatic insertion and ejection systems while maintaining adequate productivity for general public use.
3Reliability
If protective housing is added, then safety improves, but device bulkiness increases
Solution Approach 1:
The protective housing is merged with the functional components, forming an integrated unit where the housing simultaneously serves as the outer casing and the structural framework for the winding chamber. This reduces overall device bulkiness while maintaining safety protection.
4Reliability
If professional-grade mechanisms are used, then winding performance is improved, but ease of operation decreases
Solution Approach 1:
The introduction slot and extraction opening are strategically positioned and dimensioned to match typical user hand sizes and insertion forces. The extraction opening specifically features a finger-friendly geometry that enables easy grip and roll removal, enhancing user-friendliness without compromising winding performance.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a winder (1) for posters, comprising: - a casing (2) housing a cylindrical winding chamber (3) extending longitudinally along a central axis (30), and winding drive means (4) for a sheet in the winding chamber (3), - an infeed slot (5) opening into the winding chamber (3) and extending longitudinally parallel to the central axis (30) of the winding chamber (3), between two lateral edges (51) one of which forms a stop for positioning a sheet to be introduced into the winding chamber (3); - an extraction opening (6) provided on a lateral face (21) of the casing (2), the extraction opening (6) opening on both sides to the outside of the casing (2) and into the winding chamber (3).