Bottle Bottom Movable Wall Upward Swelling Part
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Solution Overview
Problem
Conventional bottles made of synthetic resin struggle to efficiently absorb reduced pressure due to difficulty in the upward movement of the movable wall part, especially when the angle between the tangential line of the movable wall part and the horizontal plane is increased to enhance pressure absorption performance.
Innovation Solution
The bottle design includes an upward swelling part at the outer end of the movable wall part, which serves as a starting point for its upward movement, and a downward swelling part, allowing the movable wall part to move smoothly in response to internal pressure changes, thereby improving reduced-pressure absorption performance without hindering the upward movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the angle between the tangential line of the movable wall part and the horizontal plane is increased to enhance reduced-pressure absorption performance, then the reduced-pressure absorption performance is improved, but the movable wall part becomes difficult to move upward
Solution Approach 1:
The upward swelling part is formed in advance at the outer end of the movable wall part to serve as a starting point for upward movement. This preliminary structural preparation ensures that when pressure changes occur, the movable wall part has a predetermined path and initiation point for its upward motion, resolving the contradiction between achieving sufficient upward movement and maintaining ease of movement.
2Reliability
If the movable wall part is formed to be located as low as possible to secure upward movement amount, then the reduced-pressure absorption performance is improved, but the movable wall part becomes difficult to move upward
Solution Approach 1:
The upward swelling part is pre-formed at the outer end of the movable wall part to establish a starting point for upward movement. This preliminary structural feature ensures that when the movable wall part needs to move upward, it has a predetermined initiation point and path, making the upward movement easier despite the low position of the movable wall part.
Solution Approach 2:
The upward swelling part creates a localized structural feature at the outer end of the movable wall part, while the rest of the movable wall part maintains its low position configuration. This local quality change at the swelling part provides the necessary movement initiation without compromising the overall low position design that maximizes absorption performance.
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
This design enables the movable wall part to move smoothly and effectively absorb reduced pressure within the bottle, enhancing the overall pressure absorption performance while preventing difficulties in upward movement, even with increased angles for improved absorption.
Implementation Method 1
the upward swelling part begins to move upward depending on a change in an internal pressure of the bottle
Data Source
AI summary
A tubular bottle is formed of a synthetic resin material having a bottom part. A bottom wall part of the bottom part includes a grounding part located at an outer circumferential edge thereof, a standing peripheral wall part which is connected from a radial inner side of the bottle to the grounding part and which extends upward, a movable wall part that protrudes, from an upper end of the standing peripheral wall part, toward the radial inner side, and a depression peripheral wall part that extends upward from an inner end of the movable wall part in a radial direction of the bottle. The movable wall part is arranged so as to be movable upward centering on a portion connected to the standing peripheral wall part. An upward swelling part is formed at an outer end along the radial direction of the bottle of the movable wall part.