Tabletop folded sheet dispenser
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Solution Overview
Problem
Conventional tabletop dispensers for sheet materials like napkins often suffer from tilted platform orientations during refilling, leading to uneven force distribution and difficulty in dispensing individual sheets, while also being prone to dust and dirt accumulation due to gaps in double-walled designs, which affects the appearance and cleanliness of advertisements displayed on transparent side walls.
Innovation Solution
A tabletop dispenser with a releasable locking mechanism using a pair of first and second arms to maintain the platform in a horizontal orientation during refilling, combined with a double-walled side wall design where the inner wall is pivotable inward, preventing dust and dirt entry and enhancing the display of advertisements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional locking mechanism is used to hold the platform in the lowermost position, then the platform can be secured during refilling, but the platform becomes tilted and sheet material dispensing becomes difficult
Solution Approach 1:
The locking mechanism is divided into two functional pairs: first arms (12) that engage with the platform's locking portions (18) to prevent tilting during refilling, and second arms (15) that interact with the biasing means (11) to enable smooth platform movement and sheet dispensing. This segmentation allows independent optimization of each function.
Solution Approach 2:
The locking mechanism transitions from a static locked position during refilling to a dynamic unlocked position during dispensing. The biasing means (11) stores energy during refilling and releases it during dispensing, creating controlled motion that maintains platform horizontality while enabling smooth sheet extraction.
2Ease of operation
If the lid is made pivotably hinged to enable easy opening for refilling, then refilling becomes convenient, but the platform may become misaligned or tilted
Solution Approach 1:
The locking mechanism is engaged in advance during the refilling process to prevent platform tilting before it occurs. The first arms (12) are positioned to catch the locking portions (18) as the platform approaches the lowermost position, ensuring horizontal alignment is maintained throughout the refilling operation.
3Adaptability or versatility
If double-walled side walls are used to provide advertisement space, then advertising functionality is added, but dust and dirt accumulate in gaps affecting appearance
Solution Approach 1:
A transparent film or flexible barrier is introduced between the inner and outer walls of the double-walled structure. This film creates a sealed environment that prevents dust and dirt from entering the advertisement space while maintaining the visual display functionality and allowing for easy cleaning of the outer surface.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures easy and upright dispensing of sheet materials while maintaining a clean and dust-free environment, improving the appearance of advertisements and menus displayed on the dispenser.
Implementation Method 1
a biasing means for urging the platform towards the lid
Implementation Method 2
a releasable locking mechanism for holding the platform in a locking position in the lowermost position
Implementation Method 3
The sheets are interlinked in such a way that the separate folded sheets of material form a chain of sheets in which each sheet has a leading panel and a trailing panel, the trailing panel being at least partly overlapped with the leading panel of the subsequent sheet in the stack. In this manner, the individual sheets are held loosely together by means of frictional forces arising between the overlapping parts.
Data Source
AI summary
Disclosed is a method for loading a stack of sheet material into a dispenser, the method including moving a lid of the dispenser from a closed use position into an open refilling position, the dispenser including a body having side walls, a base, an opening, the lid covering the opening, wherein the lid has a dispensing opening to enable sheet material to be dispensed therefrom, a platform for supporting a plurality of sheet material from below, wherein the platform is movable from a lowermost position to an uppermost position adjacent the lid, a biasing means for urging the platform towards the lid, a releasable locking mechanism for holding the platform in a locking position in the lowermost position, the releasable locking mechanism including a first pair of first arms movably attached to one of the side walls.