Paper roll support assembly
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Solution Overview
Problem
Existing paper roll holders often require disassembly to replace rolls and lack robust components for easy replacement, making the process cumbersome.
Innovation Solution
A paper roll assembly featuring first and second plates with arm assemblies, internal shafts, and springs that allow for independent rotation to facilitate easy mounting and removal of paper rolls, with constrained rotation and spring-biased positions for secure attachment and release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a removable bar with telescoping feature is used to support the paper roll, then the paper roll can be mounted and removed, but the holder requires disassembly of a portion to replace the paper roll
Solution Approach 1:
The holder is divided into a stationary housing and a rotatable arm assembly that can be independently rotated. The arm assembly includes an internal shaft with tabs that engage with housing tabs to provide discrete rotational positions. This segmentation allows the paper roll to be accessed by simply rotating the arm to a release position without disassembling any parts of the holder.
2Ease of operation
If pivot assemblies are added to assist in replacing paper rolls, then paper roll replacement is facilitated, but the components may not be robust enough for easy replacement
Solution Approach 1:
The arm assembly is designed to rotate dynamically between a normal operating position and a paper roll release position. The rotation is constrained by engagement between the internal shaft tabs and housing tabs, providing controlled movement. This dynamic design allows easy paper roll replacement while maintaining structural robustness through the tab engagement mechanism.
3Ease of operation
If the arm assembly rotates independently of the housing, then paper roll mounting and removal is facilitated, but constrained rotation is needed to control the movement
Solution Approach 1:
The internal shaft with its tabs acts as an intermediary between the arm assembly and the housing. The shaft tabs engage with housing tabs to provide constrained rotation, allowing the arm to rotate independently while maintaining a controlled range of motion. This intermediary mechanism enables easy paper roll mounting and removal without requiring complex rotation constraint systems.
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 efficient and user-friendly mounting and removal of paper rolls without disassembling the holder, ensuring robust and secure attachment while minimizing effort.
Implementation Method 1
A spring may be disposed upon one of the internal shafts to bias rotation of one of the internal shafts toward an at-rest position
Data Source
AI summary
A paper roll assembly is provided with first and second plates and first and second arm assemblies. Each of the first and second plates defines a through-hole and includes two plate tabs spaced from one another and located on a plate inner surface. Each of the first and second arm assemblies is arranged with one of the first and second plates for rotation independent of the plate. Each arm assembly includes an arm secured to an internal shaft extending through the through-hole. Each internal shaft includes a first shaft tab and a second shaft tab extending from the internal shaft. One of the internal shafts is arranged with one of the plates so rotation of the internal shaft is constrained to facilitate mount or removal of the paper roll by contact between one of the two plate tabs and one of the first shaft tab and the second shaft tab.