Auxiliary Sheet Structure for Stable Suction on Uneven Surfaces
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing suction methods face instability due to uneven surfaces, leading to a decrease in suction force and instability, as outside air flows into the suction stage through the sheet member, limiting its pressing against the flat plate.
Innovation Solution
An auxiliary sheet with alternating regions of high and low air permeability, each with elasticity, is used between the suction object and the sucking surface to enhance adhesion and block outside air inflow, stabilizing the suction process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a nonwoven fabric sheet member is disposed on the flat plate to assist suction, then the suction object can be sucked with sufficient flatness while ensuring rigidity, but outside air flows into the flat plate via the side of the sheet member due to unevenness, causing suction force to decrease and suction to become unstable
Solution Approach 1:
The sheet member is divided into multiple regions with different air permeability characteristics. First regions have higher air permeability to allow suction, while second regions have lower air permeability to block outside air inflow. This segmentation resolves the contradiction by creating specialized zones that perform different functions within the same sheet structure.
Solution Approach 2:
Different regions of the sheet member are assigned different air permeability properties according to their specific functional requirements. The first regions with higher permeability are positioned where suction is needed, while second regions with lower permeability are positioned to prevent outside air intrusion. This local differentiation allows the sheet to simultaneously achieve both suction effectiveness and outside air blocking.
2Strength
If the sheet member is pressed against the flat plate to ensure sealing, then adhesion is improved, but unevenness on the sucking surface or suction object limits pressing effectiveness, allowing outside air to flow in
Solution Approach 1:
The sheet member incorporates regions with different air permeability to address local sealing requirements. Second regions with lower air permeability provide enhanced sealing in areas where unevenness prevents effective pressing, while first regions maintain necessary airflow. This local differentiation allows the sheet to adapt to surface irregularities while maintaining overall suction reliability.
Solution Approach 2:
The invention converts the harmful effect of uneven surfaces (which prevent proper sealing) into a benefit by creating second regions with reduced air permeability. These regions are specifically designed to compensate for areas where pressing is limited by unevenness, transforming the sealing problem caused by surface irregularities into an opportunity for targeted sealing enhancement.
3Device complexity
If a uniform porous sheet is used for suction, then air flow is simple and structure is simple, but suction becomes unstable due to outside air inflow through regions where pressing is limited
Solution Approach 1:
The sheet member is segmented into first regions with higher air permeability and second regions with lower air permeability. This segmentation creates a more complex structure than a uniform sheet, but the complexity is justified by the significant improvement in suction stability achieved through preventing outside air inflow in critical areas.
Solution Approach 2:
Rather than using a uniform structure throughout, the sheet member employs local quality differentiation with regions tailored to specific functional needs. This approach increases structural complexity but resolves the suction stability problem by addressing local sealing deficiencies without requiring complete structural redesign.
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 auxiliary sheet stabilizes suction by enhancing adhesion between surfaces and suppressing a decrease in suction force, even with uneven surfaces, by blocking outside air inflow through its semi-closed regions, thus maintaining consistent suction performance.
Implementation Method 1
a plurality of first regions (AR1) having elasticity and each including a plurality of pores (12) provided continuously to allow air to pass therethrough
Implementation Method 2
The nonwoven fabric has elasticity. Therefore, when the suction object is being sucked onto the other surface of the flat plate via the sheet member, the sheet member is pressed against the flat plate.
Data Source
AI summary
An auxiliary sheet, an auxiliary sheet manufacturing method, and a suction-attachment method with which it is possible to stabilize the attachment of an object being attached by suction. An auxiliary sheet according to an embodiment is provided with: a plurality of first regions having elasticity and including a plurality of pores arranged continuously to allow for passage of air; and one or a plurality of second regions having elasticity and in which the amount of passage of air is less than in the plurality of first regions. The plurality of first regions and the one or a plurality of second regions are disposed alternately, with those of the first regions and the second regions that are adjacent to each other being in contact with each other.