Liquid Container Cap With Elastic Stopper Prevents Separation
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Solution Overview
Problem
Conventional thermos bottles with a single cap structure face issues where the cap separates when tilted, leading to spills and difficulty in discharging liquids, especially with hot drinks, due to the cap's limited movement and uneven weight distribution.
Innovation Solution
A liquid container design featuring a cap with a stopper and holding protrusion that limits cap movement, allowing 360-degree liquid discharge while preventing separation during use and enabling easy separation with external force for washing and refilling, utilizing elastic materials for sealing and flow control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cap is partially twisted out to discharge liquid, then liquid can be discharged, but the cap may be separated and content may be spilt causing burn or contamination
Solution Approach 1:
The stopper is preliminarily positioned within the cap structure to engage with the holding protrusion before liquid discharge begins. This pre-positioned stopper creates a mechanical stop that prevents the cap from being twisted out too far, thereby preventing cap separation and content spill before the harmful event can occur
Solution Approach 2:
The stopper acts as an intermediary element between the cap and the holding protrusion. It mediates the interaction by providing a controlled engagement point that allows the cap to be twisted for liquid discharge while simultaneously limiting the movement distance to prevent complete separation
2Reliability
If the cap is completely closed, then liquid flow is sealed, but the cap cannot be separated for washing, refilling, or replacement
Solution Approach 1:
The cap structure is designed with dynamic characteristics where the stopper can be compressed by external force to disengage from the holding protrusion. This allows the cap to transition from a locked state (when closed) to a separable state (when maintenance is needed), enabling both reliable sealing and ease of repair
3Stability of the object's composition
If the cap leans due to weight when container body is tilted, then the cap structure remains stable, but it is difficult to provide a flow path and liquid is not easily discharged
Solution Approach 1:
The stopper positioned within the cap creates a counterbalancing effect against the cap's weight. When the container is tilted, the stopper engages with the holding protrusion to prevent the cap from leaning in the direction of tilt, thereby maintaining the flow path orientation and enabling efficient liquid discharge
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 ensures safe and efficient 360-degree liquid discharge without cap separation, even when the container is tilted, and allows for easy cap removal for maintenance and refilling, enhancing user safety and convenience.
Implementation Method 1
formed of an elastic material to allow the cap to be separable from a container body by a certain external force applied to the cap
Data Source
AI summary
A liquid container includes a container body including an inner space accommodating a liquid formed therein, a liquid port formed at a top thereof to allow the liquid to flow into/out of the inner space, and a holding protrusion which protrudes toward an inside and is formed on an inner circumferential surface thereof, a cap inserted into the liquid port and then coupled with the container body, and a stopper coupled with the cap, disposed to be spaced apart from a bottom surface of the cap, configured to protrude in an outward-radial direction and to be held by the holding protrusion to limit a movement distance of the cap when the cap moves upward, and formed of an elastic material to allow the cap to be separable from the container body by a certain external force applied to the cap.