Sheet Product Dispenser with Automatic Replenishment to Reduce Waste
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Solution Overview
Problem
Existing sheet product dispensers either allow users to take arbitrary numbers of products, leading to waste, or dispense only one product at a time, which can be cumbersome in urgent situations, lacking a solution for quickly and accurately dispensing a preselected number of products.
Innovation Solution
A dispenser with an electronic controller and pull-out detector that automatically transfers a preselected number of sheet products into a presentation position upon removal of a product through the dispensing opening, using a transfer device and stack retainer to manage the product flow, eliminating the need for user activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dispenser allows users to take arbitrary numbers of sheet products, then user convenience is improved, but waste increases
Solution Approach 1:
The dispenser automatically detects when a sheet product is removed and self-replenishes by transferring additional sheet products from the stack to the presentation position, eliminating the need for user intervention while preventing waste through automated control
Solution Approach 2:
The pull-out detector provides feedback to the electronic controller when a sheet product is removed, triggering the transfer device to automatically replenish the presentation position with the predetermined number of sheet products, creating a closed-loop system that prevents both waste and user inconvenience
2Loss of substance
If the dispenser dispenses only one sheet product at a time, then waste is reduced, but user convenience deteriorates in urgent situations
Solution Approach 1:
The dispenser is configured to automatically transfer a predetermined number of sheet products (greater than one) from the stack to the presentation position in advance, so that when users need multiple sheet products urgently, they are already available for immediate dispensing
Solution Approach 2:
The system automatically determines and dispenses the predetermined number of sheet products based on detection signals, eliminating the need for users to repeatedly pull out individual sheet products and improving convenience during urgent situations while maintaining waste reduction
3Measurement precision
If the dispenser requires user activation to dispense sheet products, then control precision is improved, but device complexity increases
Solution Approach 1:
The dispenser uses the natural act of removing a sheet product as the trigger signal, eliminating the need for separate activation buttons or switches. The pull-out detector automatically senses when a sheet product is removed and initiates the replenishment process, reducing device complexity while maintaining precise control
Solution Approach 2:
The pull-out detector serves multiple functions: it detects user interaction, triggers the transfer mechanism, and controls the dispensing process. This multi-functionality reduces the number of separate components needed, simplifying the overall device structure while maintaining control precision
Data Source
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AI summary
A dispenser for sheet products comprises a housing having a space inside for accommodating a stack of sheet products, wherein the housing includes a dispensing opening for dispensing a sheet product from the front of the stack; an electronic controller, the controller being configured to receive a pull-out signal indicating the removal of a product from the front of the stack through the dispensing opening and, upon receiving said pull-out signal, to send out a drive signal to transfer a number of sheet products from the front of the stack into a presentation position, and a pull-out detector for detecting the removal of a product from the front of the stack through the dispensing opening and for providing the pull-out signal to the controller.