Oblique Breakable Lid Line for Tool-Free Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional synthetic resin container lids face difficulties in easy removal from the mouth-neck section of a container due to the mismatched directions of breakage for the breakable thin-walled line and connecting wall, making the process cumbersome without tools.
Innovation Solution
The container lid design incorporates a breakable thin-walled line in the transition region that extends obliquely downward, facilitating smooth breakage of the connecting wall in the side wall separation region, allowing for easy removal by aligning the breakage with the vertical breakage of the thin-walled line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the breakable thin-walled line is formed vertically in the side wall, then the structure is simple to manufacture, but the breakage direction does not align with the connecting wall, making removal difficult
Solution Approach 1:
The breakable thin-walled line is designed to extend obliquely downward in the counterclockwise direction rather than vertically, creating an asymmetric configuration that aligns the breakage direction with the connecting wall, enabling smooth sequential breakage and easy removal of the container lid
2Ease of operation
If the breakable thin-walled line extends obliquely downward in the counterclockwise direction, then the breakage aligns with the connecting wall for easy removal, but the structure becomes more complex
Solution Approach 1:
The breakable thin-walled line is configured to extend in multiple directions including obliquely downward in the counterclockwise direction, utilizing dimensional orientation to align the breakage path with the connecting wall, enabling sequential breakage while maintaining manufacturing feasibility
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A container lid (2) can be removed from a mouth-neck section (106) of a container without the need for a tool. Following the breakage of a breakable thin-walled line (70) in a transition region (52), the breakage of a breakable thin-walled connection wall (68) in a side wall separation region (54) can be started sufficiently smoothly in the container lid (2). For this purpose, the breakable thin-walled line (70) formed in a side wall (10) in the transition region (52) is brought into a form in which at least a part thereof extends obliquely downwardly in a counterclockwise direction.