Drip Bag Hook Folding Structure for a Wider Stable Opening
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Solution Overview
Problem
Conventional drip bags face challenges in increasing the opening area while maintaining a stable shape, especially when used with cups of varying diameters, due to the difference in rigidity between the water-permeable filtering sheet and thin plate-shaped hook members, making it difficult to open the bag in a perfect circle shape.
Innovation Solution
The drip bag features special-shaped hook members with oblique and vertical folding lines on the outer surfaces, allowing the opening to be easily maintained in a generally octagonal shape, increasing the opening area compared to conventional rectangular shapes, and accommodating cups with different diameters by bending the upper end into three sides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the opening is opened in a perfect circle shape to maximize opening area, then the opening area is maximized, but the difference in rigidity between the water permeable filtering sheet and thin plate-shaped hook members makes it difficult to maintain the shape and satisfy ease of operation
Solution Approach 1:
The opening is segmented into eight straight-line portions instead of a continuous circular arc, creating an octagonal shape that is easier to form with the flexible filtering sheet and thin hook members while maximizing the opening area
Solution Approach 2:
The invention uses straight lines to approximate a curve (the circle), creating an octagonal shape that closely resembles a circle but is much easier to form with flexible materials and thin hook members
2Ease of operation
If the opening is opened in a rectangular shape as in conventional drip bags, then the structure is simple and easy to operate, but the opening area is not maximized
Solution Approach 1:
The invention transitions from a rectangular shape to an octagonal shape that approximates a circle, significantly increasing the opening area while maintaining the simplicity of straight-line construction and ease of operation
3Area of moving object
If the opening shape is changed to maximize opening area, then the opening area increases, but the opening shape becomes unstable when used with cups of varying diameters
Solution Approach 1:
The opening is divided into eight straight-line portions that can independently adjust to accommodate cups of various diameters, maintaining shape stability while maximizing the opening area
Solution Approach 2:
The octagonal opening shape is designed to be dynamically adaptable to different cup diameters, with each straight-line portion able to adjust its position while maintaining the overall octagonal structure
Data Source
AI summary
A drip bag has a body formed of a water permeable sheet, an openable upper end, and hook members formed of a plate-shaped material on outer faces of two opposing body surfaces. The hook member includes: an upper stuck part adhered to the body along its opening in an elongated shape; a center part located below the upper stuck part at the body center in its width direction not to be pulled out; and a hook part not adhered to the body. Two oblique folding lines are formed on the upper stuck part with a center line therebetween, and being more spaced from the center line while extending from a lower to an upper portion of the upper stuck part, the center line bisecting the body in its width direction. A vertical folding line is formed downwardly from immediately below a lower end of the oblique folding lines.