Telescoping Toilet Paper Mandrel With Roll-Actuated Compression
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Solution Overview
Problem
Existing devices for replacing a roll of toilet paper in a telescoping tube mandrel assembly often require special construction of the tubes or are cumbersome to use, lacking an efficient mechanism for compression and removal.
Innovation Solution
A removable tube structure with a plate and hole, allowing mounting over the telescoping tubes, which can be actuated by a user's finger to compress the spring and facilitate easy replacement of the toilet paper roll and mandrel assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a telescoping tube mandrel assembly with spring is used, then the toilet paper roll can be held securely, but the replacement mechanism becomes complex and difficult to operate
Solution Approach 1:
The toilet paper roll itself serves as the actuating mechanism. When the user pushes the roll axially, the roll directly compresses the spring and moves the telescoping tubes, eliminating the need for separate actuators or complex control mechanisms. The object being replaced (toilet paper roll) becomes the tool for its own replacement.
Solution Approach 2:
The invention extracts the replacement function from the mandrel assembly structure itself and transfers it to the toilet paper roll. By removing the need for flanges, tabs, or protrusions on the tubes, the system simplifies the mandrel assembly to just the essential telescoping tubes and spring, with the roll providing the actuation function.
2Adaptability or versatility
If special construction of telescoping tubes is used for replacement, then the replacement mechanism can be integrated, but the manufacturing complexity and cost increase
Solution Approach 1:
The telescoping tube mandrel assembly is designed to be universal and compatible with standard toilet paper rolls without requiring special construction. The tubes are made with conventional materials and construction methods, and the system works with any roll that can be pushed axially, making the mechanism universally applicable to standard rolls.
Solution Approach 2:
Instead of designing special features on the tubes to enable replacement (such as flanges or tabs), the invention inverts the approach by making the roll itself the actuating element. The roll's natural ability to be pushed axially is utilized to drive the replacement mechanism, eliminating the need for inverted or special tube constructions.
3Ease of operation
If a standalone replacement device is added to the mandrel assembly, then the replacement function is enhanced, but the device complexity increases
Solution Approach 1:
The invention merges the replacement function with the existing telescoping tube mandrel assembly by using the roll itself as the actuator. Instead of adding a separate standalone device, the system combines the holding function (telescoping tubes with spring) and the actuation function (roll being pushed) into a single integrated mechanism, reducing overall component count.
Solution Approach 2:
The toilet paper roll acts as an intermediary element that transfers the user's manual pushing force to the spring and telescoping tubes. The roll mediates between the user's action and the mechanical system, enabling replacement without requiring direct mechanical linkages or additional actuating components.
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 effortless compression, installation, and removal of the toilet paper roll and mandrel assembly from the holder, improving usability and compatibility with conventional systems.
Implementation Method 1
a spring located between them that biases the tubes away from each other
Data Source
AI summary
A removable tube structure comprising of a tube and a plate conjoined to one end of the tube, whereby the plate having a hole in the center, of the same diameter as the inside diameter of tube, allows for removable mounting of the tube structure onto and over one end of a two telescoping tube toilet paper roll mandrel assembly, and the plate having an area extending radially outward, whereby the plate can be contacted by an empty or full toilet paper roll being pushed axially towards the plate by at least one finger of a user, which actuates the removable tube structure and compresses the telescoping tubes of the mandrel assembly, in order to remove and replace the roll of toilet paper, and the associated telescoping tube mandrel assembly, from a mandrel assembly holder.