Nested Toilet Paper Roll Dispenser for Automatic Refill

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Solution Overview

Problem

Existing dispensing devices for toilet paper rolls are cumbersome to refill, often require manual replacement of exhausted rolls, and do not allow easy access to additional rolls, leading to wastage and inconvenience, especially in public spaces where caretakers may not be available.

Innovation Solution

A dispensing device with a housing that includes an upper intake portion for easy loading of new rolls, a locking mechanism for supporting and replacing rolls, and an actuating mechanism that allows for automatic switching between rolls, ensuring continuous supply with minimal manual effort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If extra paper rolls are stored separately in storage closets to maximize counter top space, then space is saved, but accessibility to additional rolls becomes difficult

Engineering Contradiction:

Improvecounter top spaceVSAvoidaccessibility to additional rolls

Core Design Contradiction:

Area of stationary objectVSEase of operation

Solution Approach 1:

The dispensing device incorporates multiple storage compartments within a compact housing structure. The housing contains an operational roll holder and additional storage compartments for spare rolls, nesting multiple functions within a single space-efficient unit that maintains easy accessibility

Inventive Principle:

Principle #7Nested doll (Nesting)

2Device complexity

If manual replacement of exhausted paper rolls is required, then device complexity is reduced, but ease of operation deteriorates due to cumbersome replacement process

Engineering Contradiction:

Improvestructure simplicityVSAvoidease of roll replacement

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The device employs an automatic detection and replacement mechanism that senses when the operational paper roll is exhausted and automatically retrieves a spare roll from the storage compartment, replacing it without requiring manual user intervention

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The device includes a sensor system that continuously monitors the status of the operational paper roll and provides feedback to the control mechanism, triggering automatic replacement when the roll is depleted

Inventive Principle:

Principle #23Feedback

3Reliability

If additional rolls are made accessible only by key, then security is improved, but ease of operation worsens due to restricted access

Engineering Contradiction:

Improveprevention of wastageVSAvoidaccess to additional rolls

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The automatic detection and replacement system eliminates the need for keyed access or caretaker intervention, allowing the device to service itself by automatically detecting depleted rolls and replacing them from internal storage

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS10517444B1Paper roll dispensing device

Publication Date: 2019.12.31 HERNANDEZ CARLOS

AI summary

The present invention is a toilet paper dispensing device having loading means located at an upper intake portion of the housing to permit introduction of paper rolls into the housing therefrom. Toilet paper rolls are stored and released into a lower compartment having locking means for rotatably engage a paper roll being used and releasable mounted within a lower dispensing portion of the housing to cooperatively permit a user to pull the paper from said paper roll being used; upon the toilet paper roll in use, a user can remove the empty roll using a door on the housing and actuate a lever to allow the next toilet paper roll in line to fall into the lower compartment and be held in place by hook members so a user can easily grab toilet paper from the lower compartment.