Dispenser for sheets from stacks of interfolded sheets
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Solution Overview
Problem
Current dispensers for interfolded sheets have low capacity, requiring frequent replenishments, especially in public premises.
Innovation Solution
A dispenser with two parallel seats, each with a dispensing opening, a slider for alternating access, and blocking members to prevent accidental dispensing, ensuring sheets are used sequentially from each seat before moving to the next, thus increasing capacity and reducing replenishment frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a single-seat dispenser is used, then the device complexity is low, but the capacity is low requiring frequent replenishments
Solution Approach 1:
The dispenser is divided into two separate seats (first seat and second seat) that can accommodate separate stacks of interfolded sheets. Each seat operates independently with its own dispensing opening, allowing the dispenser to hold and manage multiple stacks simultaneously, thereby increasing overall capacity without requiring a single complex large chamber
2Quantity of substance
If multiple dispensing openings are provided, then the capacity increases, but the risk of accidental dispensing increases
Solution Approach 1:
A slider acts as an intermediary mechanism between the user and the dispensing openings. The slider can selectively close either the first dispensing opening or the second dispensing opening, providing controlled access to each seat. This mediator ensures that only one dispensing opening is accessible at a time, preventing accidental dispensing from the wrong seat while maintaining the ability to access both seats
3Quantity of substance
If heavy stacks with many sheets are inserted, then the capacity and stock duration increase, but the sheets may accidentally fall through the dispensing opening
Solution Approach 1:
Sheet retaining elements are positioned at the dispensing openings to preemptively prevent sheets from falling through. These elements create a physical barrier that counteracts the weight of heavy stacks, ensuring that even when numerous sheets are inserted, they remain properly retained and can only be dispensed through controlled action rather than accidentally dropping
4Ease of operation
If frequent replenishments are performed, then the sheets are always available, but the loss of time for replenishment increases
Solution Approach 1:
The dispenser is pre-configured with two seats that can be loaded with stacks of interfolded sheets in advance. By providing multiple seats that can be filled beforehand, the system ensures continuous sheet availability without requiring frequent interruptions for replenishment. The preliminary loading of multiple stacks into the two seats extends the operational duration before replenishment is needed
Data Source
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AI summary
The dispenser comprises an openable housing, inside which two adjacent parallel seats are provided, configured so that each seat accommodates a respective stack of interfolded sheets. Each seat ends with a dispensing opening. A sliding slider is provided in front of the dispensing openings, adapted to take a closing position for closing one or the other of the dispensing openings alternatively.