Rotatable Suction Cup Assembly for Durable Airtight Sealing
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Solution Overview
Problem
Conventional suction cups experience reduced suction force and adherence due to uneven force distribution, leading to air leakage and detachment from the surface, especially when hanging heavy objects.
Innovation Solution
A suction cup design featuring a suction disc assembly with a rotatable unit and hanger accessory interface, where the rotatable unit applies pressure to the suction disc, and the hanger accessory interface supports the object, ensuring a consistent seal and enhanced suction force through the use of tilt tracks and slider blocks to maintain contact and prevent air ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the shell presses tightly against the suction disc to prevent air leakage, then the suction attachment duration is prolonged, but the force distribution becomes uneven causing the upper contact edge to press against the suction disc and allowing air to seep in
Solution Approach 1:
The rotatable unit applies pressure locally at the lower contact edge of the shell to the suction disc, creating a focused sealing zone. This localized pressure application ensures that the sealing force is concentrated where most needed (at the lower edge where air leakage occurs) rather than distributed uniformly, thereby maintaining seal consistency while preventing air ingress.
Solution Approach 2:
The rotatable unit can rotate to dynamically adjust the position and distribution of pressure applied to the suction disc. This dynamic adjustment capability allows the system to adapt to varying load conditions and maintain optimal sealing pressure distribution, preventing both air leakage and excessive pressing at any single point.
2Force
If the lower contact edge applies the most force to the suction disc, then the suction force is enhanced at the bottom, but the variable space shape becomes distorted and air enters from the upper half
Solution Approach 1:
The rotatable unit creates an asymmetric pressure distribution pattern, concentrating sealing force at the lower contact edge where air leakage is most problematic. This asymmetric force application maintains the enhanced suction force at the bottom while preventing the symmetric distortion that would allow air entry from the upper half.
Solution Approach 2:
The rotatable unit preemptively applies counter-pressure at the lower contact edge to counteract the tendency of air to leak upward. By applying force in advance at the critical lower edge position, the system prevents the distortion of the variable space that would otherwise allow air ingress from the upper half.
3Length of stationary object
If the suction cup is designed to be thinner, then the profile is more compact, but the structural rigidity to maintain seal pressure may be reduced
Solution Approach 1:
The suction cup is divided into functionally distinct segments: the suction disc assembly for creating the vacuum, the rotatable unit for dynamic pressure application, and the shell for structural support. This segmentation allows each component to be optimized independently, enabling a thinner overall profile while maintaining structural rigidity through the distributed functional architecture.
Solution Approach 2:
The shell is designed as a thin-walled structure that utilizes flexible membrane theory to maintain structural integrity. The thin shell works in conjunction with the rotatable unit's localized pressure application to maintain seal pressure without requiring excessive thickness, achieving both compactness and sufficient rigidity.
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 enhances suction force and attachment duration by maintaining a consistent seal and reducing air leakage, while also being thinner and more durable than existing suction cups.
Implementation Method 1
the rotatable unit applies a pressure during the flipping to the shell so that the shell presses tightly against the suction disc to prevent outside air from entering the variable space
Implementation Method 2
The flip unit draws the center area of the suction disc away from the contact surface so that the variable space is expanded to generate a suction force similar to the vacuum suction
Data Source
AI summary
A suction cup is disclosed, including a suction disc assembly, a rotatable unit and a hanger accessory interface; wherein the suction disc assembly including a suction disc and a pull-up element disposed on the suction disc; the rotatable unit including a carrier base, a penetration hole, and a plurality of tilt tracks, the tilt tracks being distributed around a ring-shaped inner wall of the carrier base and the penetration hole being formed at the center area of the carrier base; the hanger accessory interface being disposed inside the carrier base and contacts the suction disc through the carrier base; the hanger accessory interface including a plurality of slider blocks, with each slider block located at a corresponding tilt track; the pull-up element being engaged to the hanger accessory interface through the penetration hole; as such, suction cup provides convenience and enhance durable suction for attachment.