Double-Walled Container Liquid Pool Stabilization
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Solution Overview
Problem
Conventional double containers experience instability in holding the pool of liquid medium due to surface tension, leading to potential dripping and decreased sealing performance when subjected to impacts during transportation or vibration, causing the content to dry and affect the spherical body's displacement.
Innovation Solution
The double container design incorporates a tubular wall with an inclined surface and a protruding wall featuring ribs or stepped portions to stabilize the pool of liquid medium, ensuring it remains in place even under slight impacts, with the ribs or stepped portions extending into the containing space to hinder motion and prevent dripping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a spherical body is used as a valve body in a dispensing plug, then the content can be dispensed by tilting or inverting the container, but the pool of liquid medium formed below the spherical body may drip when subjected to transportation or vibration impacts
Solution Approach 1:
The patent introduces a pool holding member that creates a pool holding space to cushion and contain the liquid medium pool before it can drip. This preventive structure is built in advance to counteract the harmful effect of transportation or vibration impacts that would otherwise cause the liquid pool to move and drip, compromising the sealing between the spherical body and inclined wall.
2Duration of action of stationary object
If the container is returned to upright position after dispensing, then the spherical body returns to abutment position, but the pool of liquid medium may dry out due to transportation impacts causing failure in displacement
Solution Approach 1:
The pool holding member is designed to retain the liquid medium pool in advance, preventing it from moving and drying out during transportation or vibration. This ensures that the liquid medium remains available to maintain sealing performance and allow reliable displacement of the spherical body when the container is returned to the upright position.
3Device complexity
If surface tension alone is used to hold the pool of liquid medium, then no additional structure is needed, but the pool becomes unstable under slight impacts
Solution Approach 1:
The pool holding member acts as an intermediary structure between the liquid medium pool and the dispensing plug. It provides mechanical support and containment for the liquid pool, mediating the instability caused by transportation impacts while maintaining the overall simplicity of the plug structure.
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 liquid holding member effectively stabilizes the pool of liquid medium, preventing dripping and maintaining sealing performance by hindering motion and ensuring the pool is caught securely, even when the container is subjected to impacts, thus preventing dispensing failures due to drying.
Implementation Method 1
the spherical body being displaceable by its own weight in response to a change in position of the container
Implementation Method 2
a pool of the liquid medium is formed below the spherical body due to surface tension
Data Source
AI summary
A double container includes an outer layer body constituting an outer shell; an inner layer body including an upper opening communicating with a containing space, accommodated in the outer layer body, and deformable to undergo volume reduction; an inside plug including a tubular wall extending toward the containing space, a spherical body serving as a valve body being disposed inside the tubular wall; and a dispensing plug fitted to a mouth portion of the outer layer body and including a dispensing tube connected to the tubular wall. The tubular wall includes an inclined wall having a diameter decreasing toward the containing space and configured to abut against the spherical body over an entire circumference and including a protruding wall protruding from the inclined wall to the containing space. The protruding wall includes a liquid holding member holding a pool of liquid medium of the content formed below the spherical body.