Slotted Roll Holder Expansion to Prevent Paper Pressure Marks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing roll holders often cause pressure points and are limited to accommodating rolls of specific lengths, as they directly apply force to the paper or material, leading to difficulties in easy removal and limited adaptability.
Innovation Solution
A roll holder design featuring a hollow cylindrical body with longitudinal slots and a conically tapering handle that expands the body's circumference when adjusted, allowing secure fixation without direct pressure on the material, enabling the use of rolls of varying lengths and ensuring smooth removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the handle acts directly on the paper roll to prevent rotation, then the roll is secured, but pressure marks are created on the paper that impair smooth removal
Solution Approach 1:
The patent introduces an intermediate mechanism where the handle acts on a conically shaped surface that in turn acts on the paper roll core. This intermediary conical surface transfers the securing force to the core without the handle directly contacting the paper, thereby preventing pressure marks while maintaining roll security.
2Reliability
If spring-loaded handles are used to secure the roll, then the roll is held firmly, but only rolls of the same core length can be accommodated
Solution Approach 1:
The patent employs a dynamically adjustable mechanism where the handle can be moved along the longitudinal axis of the tube to different positions. This dynamic adjustment capability allows the holder to accommodate rolls of various core lengths while maintaining firm holding through the spring-loaded conical pressing action.
3Reliability
If the handle is adjusted against spring force to secure the roll, then rotation is prevented, but the structure becomes more complex
Solution Approach 1:
The patent combines multiple functions into integrated components: the tube serves as both the structural housing and the pressing surface holder; the spring provides both the forcing mechanism and the retention force; the conical surface on the handle integrates both the adjustment interface and the rotation-prevention mechanism. This merging reduces overall structural complexity while maintaining effective rotation prevention.
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
The design prevents rotation of the roll by expanding the body's circumference, allowing for easy peeling without pressure points and accommodating rolls of different lengths, ensuring secure and efficient material handling.
Implementation Method 1
a spring element, such as a helical or disc spring, acts on the first element, such as a rod, in particular a threaded rod
Implementation Method 2
a handle (18), designated as the second element, which can have different designs, as the figures clearly show. However, it is essential that the handle 18 has, at least in sections, a conically tapered underside 22 in the direction of the opening 20 of the sleeve 14
Implementation Method 3
the sections 56 rest against the sleeve 73 of the kitchen roll 54 in such a way that rotation is prevented by frictional engagement
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a roller holder (10) comprising a base section (12) with a hollow cylindrical first body (14) extending from the base section and having an opening (20) located away from the base section, a first element (16) adjustable within the first body along its longitudinal axis and subjected to force in the direction of the opening, and a second element (18) having a conical underside (22) facing the body and tapering towards the opening side, wherein a sleeve surrounding the first body can be fixed in place when force is applied to the second element in the direction of the base section and can be rotated about the first body when no force is applied. The first body (14) is longitudinally slotted from the edge of the opening (20) such that when the second element (18) is adjusted in the direction of the base section (12) and the underside (22) interacts with the body, the latter expands circumferentially.