Beverage Container Plug Body High-Pressure Sealing Design
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Solution Overview
Problem
Conventional beverage container plugs fail to maintain a sealing structure effectively under high pressure due to the sealing position being located above the screwing position, leading to deformation and loss of sealing integrity.
Innovation Solution
A plug body design featuring a spout part with a ring-shaped sealing member positioned below the fitting part, a male threaded part with a smaller upper surface angle and a female threaded part with parallel surfaces, and a thread valley gap to disperse pressure, ensuring the sealing surface is widened and pressure-resistant.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sealing position is located above the screwing position, then the plug body can be easily assembled, but the sealing structure cannot be maintained under high pressure
Solution Approach 1:
The patent inverts the conventional sealing position location by placing the sealing member below the screwing position rather than above it. This inversion allows the sealing structure to be positioned in a region less affected by high pressure and deformation forces, thereby maintaining sealing reliability while preserving assembly ease through the threaded connection structure.
Solution Approach 2:
The patent applies different functional qualities to different regions of the plug body. The upper portion contains the threaded connection structure for easy assembly, while the lower portion contains the sealing member positioned in a region that experiences less stress and deformation under high pressure, optimizing both assembly ease and sealing reliability through localized functional differentiation.
2Device complexity
If the sealing member is positioned above the screwing position, then the plug body structure is simplified, but the sealing integrity is lost under high pressure due to deformation
Solution Approach 1:
The patent inverts the conventional arrangement by positioning the sealing member below the threaded connection rather than above it. This inversion places the sealing function in a structurally more stable region that is less susceptible to deformation under high pressure, thereby maintaining sealing integrity without significantly increasing overall device complexity.
Solution Approach 2:
The patent creates distinct functional zones within the plug body structure. The upper region houses the threaded connection for assembly purposes, while the lower region houses the sealing member in a position that experiences minimal deformation under pressure, achieving reliable sealing through localized structural optimization.
3Reliability
If the thread valley gap is created by cutting the female threaded part, then pressure is dispersed and plug popping is suppressed, but the manufacturing process becomes more complex
Solution Approach 1:
The patent segments the threaded connection structure by creating a gap in the female threaded part at the thread valley position. This segmentation divides the continuous threaded structure into sections, allowing pressure to be dispersed into multiple pathways and preventing concentrated stress that causes plug popping, while the gap creation process remains a relatively simple manufacturing modification.
Data Source
AI summary
A plug body includes (a) a spout part, (b) a plug including a fitting part and removably fitted to an inner side of the spout part, and (c) a sealing member in a ring shape attached to a lower side of the fitting part of the plug. When the plug is inserted, the sealing member is in contact with a portion on a lower side of the spout part to form a sealing structure.