Polygonal Bottle Reinforcement Protrusion
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Solution Overview
Problem
Polygonal bottles experience depression deformation at the upper end portion of the main wall section when subjected to large compressive forces during conveyance, leading to structural instability.
Innovation Solution
The integration of a reinforcement protrusion with a curved surface at the connecting portions of the shoulder section to the drum section, which distributes compressive forces and increases stiffness, preventing deformation by extending outward in the radial direction without a step difference and forming a surrounding groove that enhances stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the bottle is formed with a panel section recessed inward at the main wall sections, then the bottle achieves a polygonal shape suitable for conveyance and stacking, but the upper end portion of the main wall section becomes vulnerable to depression deformation under compressive force
Solution Approach 1:
The patent applies local quality by forming a reinforcement protrusion at the specific location where the shoulder section connects to the main wall sections. This protrusion locally increases the thickness and structural strength at the vulnerable upper end portion, without affecting the overall polygonal shape or adding significant weight to the entire bottle.
Solution Approach 2:
The reinforcement protrusion is formed in advance during the bottle molding process, creating a preventive structural feature before the bottle is subjected to compressive forces during conveyance. This preliminary reinforcement ensures that when compressive forces are applied, the upper end portion has already been strengthened and is less susceptible to depression deformation.
2Ease of manufacture
If the reinforcement protrusion is formed with a step difference from the outer circumferential surface, then manufacturing is simplified, but the top surface cannot effectively receive and distribute compressive forces
Solution Approach 1:
The patent applies curvature by forming the top surface of the reinforcement protrusion as a curved surface that protrudes upward. This curved configuration allows the top surface to effectively receive compressive forces applied to the upper end portion and distribute them in the circumferential direction, while the smooth transition without step differences maintains structural integrity and force distribution efficiency.
3Ease of manufacture
If the top surface of the reinforcement protrusion is made flat and continuous with the outer circumferential surface, then manufacturing is easier, but the area for receiving and distributing compressive forces is reduced
Solution Approach 1:
The patent applies dimensionality change by extending the top surface of the reinforcement protrusion in the vertical dimension, making it protrude upward from the outer circumferential surface. This creates additional surface area in the vertical direction that can receive compressive forces, while maintaining continuity with the outer surface in the radial direction for manufacturing ease.
Data Source
AI summary
A polygonal bottle, and mouth, shoulder, drum, and bottom sections are formed in a bottle axial direction, the drum section including main wall sections connected via connecting sections in a circumferential direction about a bottle axis, in a lateral cross sectional view perpendicular thereto, a polygonal shape is formed, in which a panel section recessed inward in a radial direction, extending in the bottle axial direction and arriving at an upper portion of the mouth section side of the main wall section formed at the main wall sections of the drum section. A reinforcement protrusion protruding outward in the radial direction is formed at shoulder section connecting portions, a top surface directed outward in the radial direction is continued to an outer circumferential surface of the drum section with no step difference, and an upper surface directed upward is formed in a curved surface shape protruding upward.