Circular Lid Rainfall Drainage Design
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Solution Overview
Problem
Existing planting aid products with circular lids are prone to damage from rainfall, requiring a moisture-resistant cover sheet for protection, which is not always necessary or desirable.
Innovation Solution
A circular lid design featuring a circular projection that divides the lid into an outer and inner part, with descending planes directing rainfall towards the edge and an opening, and radially positioned projections providing structural strength and efficient water drainage, allowing the lid to function without a moisture-resistant cover sheet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flat circular lid is used to cover the container, then the manufacturing is simple and cost-effective, but the lid is damaged by rainfall during use
Solution Approach 1:
The lid surface is segmented into multiple functional zones: a central raised projection, descending planes radiating outward, radially positioned projections, and a flat upper surface. This segmentation allows each zone to perform a specific function in managing rainfall, transforming the flat surface into a structured water management system that directs rain away from the lid material while maintaining manufacturing simplicity.
Solution Approach 2:
The lid transitions from a two-dimensional flat surface to a three-dimensional structured surface with varying elevations. The central projection rises above the base plane, descending planes create slopes, and radially positioned projections add vertical elements. This dimensional transformation enables the lid to actively manage rainfall through gravity-driven water flow while preserving the simplicity of the base manufacturing process.
2Ease of manufacture
If the lid has a large flat upper surface area, then the drying process during manufacturing is supported, but water accumulates on the lid during use causing damage
Solution Approach 1:
Different regions of the lid are assigned different qualities and functions: the central raised projection provides structural support and drying surface, the descending planes create water flow paths, and the radially positioned projections provide localized reinforcement. This local differentiation allows the lid to simultaneously support manufacturing drying processes while preventing water accumulation during use.
Solution Approach 2:
The descending planes transform the harmful effect of rainfall into a beneficial water management system. Instead of water accumulating and damaging the lid, the planes actively channel rainwater toward the edges and into the container, converting the harmful rainfall into a controlled flow that even supplements the water supply for the plant.
3Object-affected harmful factors
If the lid material is biodegradable pulp, then the environmental impact is reduced, but the lid is weakened by prolonged exposure to water
Solution Approach 1:
The lid structure is designed to preemptively manage water exposure before it can damage the biodegradable material. The descending planes and radially positioned projections create a system that rapidly channels rainwater off the lid surface, preventing prolonged water contact that would weaken the pulp. This preliminary water management action protects the environmentally friendly material from its vulnerability to water.
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
Significantly reduces damage from rainfall and allows for effective water drainage, eliminating the need for a moisture-resistant cover sheet, while maintaining structural integrity and supporting the drying process of biodegradable materials.
Implementation Method 1
one or more planes descending from the circular projection towards the opening... the descending planes direct any rainfall water towards the opening
Implementation Method 2
the first radially positioned projections having a flat upper surface defining the upper end of the lid... provides the desired support
Data Source
Figure 1~2
Figure 3
AI summary
The invention is directed to a circular lid (1) having a lower end (2) and an upper end (3) and comprising a circular projection (4) and an opening (5) in the lid (1) within the circular projection (4) and provided with one or more planes (6) descending from the circular projection (4) towards the opening (5) and one or more first projections (7) having a flat upper surface (8) defining the upper end (3) of the lid (1). The lid may be used as part of a planting aid product and may be composed of biodegradable pulp.