Bath Tissue Dispenser Hub for Large-Core Roll Compatibility Control
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Solution Overview
Problem
Commercial bath tissue dispensers often restrict the use of non-standard size bath tissue rolls, limiting the options for luxury facilities that require premium tissues with unique dimensions, as they may not fit or function properly in standard dispensers.
Innovation Solution
A custom hub designed for bath tissue dispensers that supports larger size rolls with specific core dimensions, featuring a first end with a diameter of at least 1.82 inches and a second end with a lip to ensure proper fit and rotation of the roll, preventing smaller rolls from being used.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a standard size hub is used in the dispenser, then the dispenser can accommodate standard bath tissue rolls, but it cannot accommodate non-standard size rolls required by luxury facilities
Solution Approach 1:
The hub design incorporates a first end with a larger diameter (at least 1.82 inches) and a second end with a lip structure, changing the geometric parameters of the hub to accommodate non-standard roll sizes. This parameter modification allows the dispenser to handle luxury facility requirements while maintaining a relatively simple overall structure.
2Adaptability or versatility
If a custom hub with larger diameter first end is used, then larger bath tissue rolls can be supported, but smaller rolls are blocked from being used
Solution Approach 1:
The hub features an asymmetric design where the first end has a larger diameter than the second end. This asymmetry is intentional and functional, allowing the hub to support larger rolls while preventing smaller rolls from being installed. The lip at the second end further enhances this selective compatibility without requiring complex mechanisms.
3Manufacturing precision
If the first end has a diameter of at least 1.82 inches, then it can support rolls with larger core dimensions, but it becomes difficult to fit smaller core diameter rolls
Solution Approach 1:
The hub's first end is designed with a predetermined large diameter (at least 1.82 inches) that preemptively prevents smaller rolls from being installed. This preliminary design choice ensures that only rolls with the required core dimensions can be used, maintaining manufacturing precision for luxury facilities while eliminating the need for complex selection mechanisms.
4Device complexity
If the connector rod has a thin diameter less than half of the first diameter, then the hub structure remains simple, but the structural strength must be sufficient
Solution Approach 1:
The connector rod is designed as a thin rod with a diameter less than half of the first end's diameter. This thin-profile connector maintains structural adequacy while keeping the overall hub design simple and avoiding excessive complexity in the connector geometry.
Data Source
AI summary
The hub described herein is adapted for specialized use with relatively larger diameter tissue roll cores and large width rolls. The hub prevents the practical use of smaller tissue rolls having smaller core diameters and/or being a smaller width roll. The hub allows for custom matching a bath tissue roll with a particular hub for quality control purposes. The hub facilitates the installation of a predetermined uniform bath tissue to be mounted in a dispenser with the hub.