Paper roll holder
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Solution Overview
Problem
Conventional toilet paper holders require complex operations, compromise hygiene, or have intricate structures, making it difficult to replace paper rolls efficiently and hygienically, especially for one-handed use.
Innovation Solution
A U-shaped paper roll holder with a movable body that allows for one-handed operation without touching the paper roll, featuring support parts for the core, a stationary part for the replacement roll, and a paper cutter mechanism that guides the used core to be replaced by its own weight, ensuring hygiene and simplicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional toilet paper holder with a shaft is used, then the holder structure is simple, but it takes time and effort to replace used toilet paper
Solution Approach 1:
The holder body is designed to be rotatable about the shaft axis, transforming a static structure into a dynamic one. This rotational movement enables easy replacement of paper rolls by allowing the user to rotate the holder body to access and replace the paper roll core without complex disassembly operations.
Solution Approach 2:
The holder structure is divided into separable components: a shaft that remains fixed and a holder body that can be rotated and removed. This segmentation allows the paper roll core to be independently replaced while the main holder structure remains in place, simplifying the replacement operation.
2Ease of operation
If the paper roll is lifted by hand from the lower side of the shaft, then the replacement operation is simple, but the user must touch the toilet paper and storage case which is not hygienic
Solution Approach 1:
The holder body acts as an intermediary mechanism between the user and the paper roll core. Instead of directly handling the paper roll core, the user rotates and manipulates the holder body, which then facilitates the removal and replacement of the paper roll core. This indirect operation prevents direct contact with potentially contaminated surfaces.
Solution Approach 2:
The holder body is designed to automatically guide and position the paper roll core during replacement. The rotational movement and structural design enable the paper roll core to be removed and replaced through the movement of the holder body itself, without requiring manual handling or positioning by the user.
3Ease of operation
If a lever operation mechanism is used to lower the replacement paper roll, then the paper roll can be replaced without touching it, but the structure becomes complicated with many parts
Solution Approach 1:
The holder body serves multiple functions: it supports the paper roll core during use, enables rotation for access, facilitates removal of the used core, and guides the replacement core into position. This multi-functionality eliminates the need for separate mechanisms for each operation, reducing the overall number of parts while maintaining hygienic one-handed operation.
Solution Approach 2:
The functions of supporting, rotating, removing, and guiding are merged into a single integrated holder body structure. Instead of having separate components for each function (as in complex lever-based mechanisms), the holder body combines all these functions into one unified structure that achieves the same goals with fewer parts.
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
Enables easy, one-handed replacement of paper rolls without touching the roll, maintaining posture and hygiene, and simplifying the structure compared to existing solutions, making it accessible for elderly and infant users, and applicable to both toilet and kitchen paper.
Implementation Method 1
the replacement paper roll stationed on the stationary part pushes up the core of the used paper roll supported by the support parts when an operator pulls the movable body upward
Data Source
AI summary
A hygienic paper roll holder that is gentle for elderly and toddlers and can be replaced without touching a used paper roll core and a replacement paper roll with a relatively simple configuration and easy operation with one hand. The paper roll holder comprises a U-shaped holder body, support parts for moving and supporting both sides of toilet paper, the support parts being attached to the U-shaped holder body, and a movable tray that has a stationary part for placing a replacement toilet paper and a holding part for temporarily holding a used core. By moving this movable tray up and down by hand, the used core supported by the support parts and the replacement toilet paper on the stationary part can be exchanged.