Sheet Roll Dispenser Tongue Stop for One-Handed Tearing
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Solution Overview
Problem
Current sheet roll dispensers require users to hold the roll with one hand and pull the sheet unit with the other, leading to inconvenience and potential mess when separating sheet units, as the roll becomes loose and needs rewinding.
Innovation Solution
A sheet roller dispenser with a case featuring an elongated hole, an extension plate with a tongue, and a pressing block that allows the tongue to penetrate a slit in the dotted line of the sheet roll, enabling one-handed operation and secure separation of sheet units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users hold the roll with one hand and pull the sheet unit with the other hand, then the sheet unit can be separated from the roll, but the operation becomes inconvenient and the roll becomes loose and messy
Solution Approach 1:
The patent introduces an intermediary mechanism (the dispenser case with pressing block and extension plate) that mediates between the user's pulling action and the roll. The pressing block presses against the roll to prevent it from moving forward, while the extension plate with slit guides the sheet unit separation, allowing one-handed operation without the roll becoming loose or messy.
2Stability of the object's composition
If the roll is held securely to prevent loosening, then the roll stability is maintained, but the user needs to use both hands for operation
Solution Approach 1:
The dispenser case acts as a mediator that provides stable support for the roll through the pressing block, eliminating the need for the user to hold the roll with one hand. This stable support structure enables the user to operate with one hand while the other hand is free, resolving the contradiction between roll stability and ease of operation.
3Ease of manufacture
If the sheet roll is designed for continuous winding, then package and transportation convenience is improved, but the sheet separation process becomes inconvenient during use
Solution Approach 1:
The dispenser case with its pressing block and extension plate mechanism serves as an intermediary device that bridges the continuous wound roll design and convenient sheet separation. The extension plate with slit provides a guided path for sheet separation, while the pressing block maintains proper tension, enabling easy one-handed operation without compromising the continuous roll structure for packaging convenience.
Data Source
AI summary
A sheet roller dispenser has a case with an interior for an accommodating space to receive a sheet roll. The case has an elongated hole longitudinally defined on a side face. An extension plate with a tongue extending upward is formed below the elongated hole at a central section of the elongated hole, and a corresponding pressing block is formed above the elongated hole to align with the extension plate. The sheet roll has a dotted line formed between two adjacent sheet units, and a slit is defined at a center section of the dotted line. When a free end of the sheet roll is pulled out from the case via the elongated hole, the tongue inserts into the slit of the dotted line to act as a stop, so that the pulled out sheet unit is separated apart from sheet roll easily and conventionally in operation by tearing along the dotted line.