Bottle Bottom Movable Wall Upward Rotation
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Solution Overview
Problem
Conventional bottles experience bottom collapse and inadequate pressure reduction-absorbing performance due to the movable wall portion rotating downward, leading to instability and reduced pressure absorption during filling or pressure increase.
Innovation Solution
A bottle design featuring a cylindrical shape with a bottom wall including a grounding portion, a rising circumferential wall portion inclined at 10° or less, an annular movable wall portion, and a recessed circumferential wall portion, where the movable wall portion rotates upward to increase pressure absorption while preventing bottom collapse by maintaining stable grounding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the movable wall portion rotates downward during filling or pressure increase, then the bottle can accommodate contents, but bottom collapse occurs causing failure in grounding stability
Solution Approach 1:
The patent inverts the conventional rotation direction of the movable wall portion. Instead of rotating downward during filling, the movable wall portion is designed to rotate upward, which prevents bottom collapse while still accommodating the contents. This inversion of the rotation direction resolves the contradiction between contents capacity and grounding stability.
Solution Approach 2:
The patent implements preliminary anti-action by designing the movable wall portion with an upward rotation mechanism before filling occurs. The grounding portion and rising circumferential wall portion are configured to prevent downward rotation that would cause bottom collapse, thereby preemptively counteracting the harmful effect while allowing contents to be filled.
2Reliability
If the movable wall portion rotates upward during pressure reduction, then pressure reduction-absorbing performance is improved, but the structure becomes more complex
Solution Approach 1:
The patent applies dynamics by making the movable wall portion rotatable rather than fixed. The bottom wall portion includes a grounding portion, a rising circumferential wall portion, and a movable wall portion that can rotate upward during pressure reduction. This dynamic structure allows the bottle to adapt to pressure changes while maintaining a relatively simple overall design.
Data Source
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AI summary
A bottle is formed of a synthetic resin material in a cylindrical shape with a bottom, and a bottom wall portion of a bottom portion thereof includes a grounding portion located at an outer circumferential edge, a rising circumferential wall portion that is connected from a bottle radial inner side to the grounding portion and extends upward, an annular movable wall portion protruding from an upper end of the rising circumferential wall portion toward the bottle radial inner side, and a recessed circumferential wall portion that is connected from the bottle radial inner side to the movable wall portion and extends upward. The movable wall portion is disposed to be free to rotate around a portion connected to the rising circumferential wall portion so as to move the recessed circumferential wall portion in an upward direction. The rising circumferential wall portion extends so as to be gradually inclined toward the bottle radial inner side with the approach from the grounding portion toward the portion connected to the movable wall portion, and an inclined angle thereof is equal to or less than 10° with respect to a bottle axis.