Coreless Tissue Roll Dispenser with Central Pin and Peripheral Guide
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Solution Overview
Problem
Existing dispensers for coreless tissue paper rolls face challenges in efficiently holding and dispensing solid rolls without central holes, leading to material waste and increased consumption, especially in public or industrial settings.
Innovation Solution
A dispenser design featuring an openable housing with central pins and guides for centering and holding coreless rolls, allowing insertion and dispensing from the center, and including multiple seats to reduce replenishment frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If traditional rolls with tubular winding cores are used, then the rolls can be easily dispensed through central holes, but the central volume is empty causing excessive material consumption and increased transportation costs
Solution Approach 1:
The invention removes the tubular winding core from the roll structure, extracting the harmful empty central volume while retaining the essential function of the roll. The coreless design eliminates cardboard material consumption and reduces the empty space that causes waste, while the dispensing mechanism is adapted to work with the coreless structure through peripheral support and central push-out features.
2Loss of substance
If coreless rolls without central holes are used, then material waste is reduced, but existing dispensers cannot accommodate them
Solution Approach 1:
The dispenser is divided into functional zones: a peripheral support surface that contacts the outer circumference of the coreless roll for stable mounting, and a central push-out element that inserts through the roll to dispense paper. This segmentation allows the dispenser to accommodate coreless rolls without requiring a central hole, while maintaining compatibility with the new roll format.
Solution Approach 2:
The invention introduces a peripheral support surface as an intermediary between the dispenser and the coreless roll, providing a mounting interface that does not require a central hole. The central push-out element acts as a mediator to transfer force through the roll material for dispensing, enabling compatibility without adapting the entire dispenser structure.
3Duration of action of stationary object
If multiple rolls are stored in dispensers to prolong replacement intervals, then replenishment frequency is reduced, but the dispenser structure becomes complex and expensive
Solution Approach 1:
The dispenser is designed with universal features that accommodate multiple coreless rolls simultaneously through simple peripheral support surfaces and central push-out mechanisms. Each roll can be independently loaded and dispensed from, allowing multiple rolls to be stored without requiring complex mechanical linkages or specialized structures, thus extending replacement intervals while maintaining simplicity.
Data Source
AI summary
The dispenser comprises an openable housing, inside which at least one seat is provided for a coreless roll. The first seat comprises a first central pin protruding from a first wall of the housing toward the inside of the housing, and a first guide extending around, and spaced from, the first pin, and adapted to guide the insertion of the roll into the first seat, keeping the roll centered relative to the first pin. An exit hole is provided in a second wall of the housing for dispensing the web material from the roll. When the housing is closed, the second wall is arranged opposite the first wall.