Article Holding Device With Recessed Negative Pressure Zone
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Solution Overview
Problem
Existing article holding devices face challenges in increasing suction power to reliably hold sheet-like articles, such as cloths, without increasing device size, as they struggle to manage airflow effectively for larger surface areas.
Innovation Solution
The article holding device incorporates a base portion with recessed areas and strategically positioned holes and flow paths that allow fluid to be ejected in opposite directions, creating a stronger negative pressure zone for enhanced suction, including the use of inclined portions to direct airflow and improve pressure generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the flow amount of air or pressure is increased to enhance suction power for sheet-like articles, then the suction power increases, but the device size increases
Solution Approach 1:
The holding portion is divided into a flat portion and a recessed portion, creating distinct functional zones. The recessed portion segments the airflow path and concentrates the negative pressure effect, allowing enhanced suction power without proportionally increasing the overall device volume.
Solution Approach 2:
The recessed portion is nested within the holding portion structure, creating a multi-level configuration. This nesting allows the device to achieve greater suction power through the recessed cavity while maintaining a compact overall footprint, as the enhanced suction mechanism is contained within the existing structural envelope.
2Reliability
If the suction power is increased to reliably hold sheet-like articles with larger surface area, then the holding reliability improves, but the device complexity increases
Solution Approach 1:
The holding portion is segmented into a flat portion for initial contact and a recessed portion for enhanced suction. This segmentation allows the device to reliably hold sheet-like articles by creating distinct functional zones that work together, achieving high holding reliability through simple geometric division rather than complex mechanisms.
3Power
If the fluid ejection is directed outward to create negative pressure, then the suction effect is generated, but the suction power is insufficient for large surface area articles
Solution Approach 1:
The recessed portion introduces a vertical dimension to the airflow pattern, creating a three-dimensional negative pressure zone. Fluid ejected from holes in the recessed portion rises upward and then moves outward, creating a volumetric suction field that can effectively hold sheet-like articles with larger surface areas, enhancing both suction power and holding capability.
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
This configuration allows for increased suction power, enabling more reliable holding of sheet-like articles by generating a stronger negative pressure between the holding portion and the article, surpassing the capabilities of conventional devices.
Implementation Method 1
The holding portion sucks and holds a sheet-like article using a negative pressure generated between the holding portion and the sheet-like article on a lower surface of the holding portion by a fluid supplied to the flow paths being ejected from the holes
Implementation Method 2
The first inclined portion is connected to an upper end of the first flow path portion, the recessed portion, and an upper end of the second flow path portion, and is inclined downward to the first direction. The second inclined portion is connected to an upper end of the first flow path portion, the recessed portion, and an upper end of the second flow path portion, and is inclined downward to the second direction
Data Source
Figure 1
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AI summary
The article holding device 23 includes a base portion 32 whose lower surface has a holding portion 33 to hold the sheet-like article 9, flow paths 70-78 communicated with holes 61-68 in the holding portion 33. The holes 61-68 including a first hole 61,65 and a second hole 62,68, the first hole 61,65 being provided on one side of the holding portion 33 in the predetermined direction, the second hole 62,68 being provided on another side, which is opposite from the one side, of the holding portion 33 in the predetermined direction. The recessed portion 43 being provided between the first hole 61,65 and the second hole 62,68 and being recessed above the horizontal portion 331 of the holding portion 33. It is thus possible to effectively generate a negative pressure in the space of the recessed portion 43 between the holding portion 33 and the article 9.