Candle Lid Horizontal Slit Ventilation Design
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Solution Overview
Problem
Existing covers for hollow bodies open at the top, such as grave lights, are vulnerable to precipitation ingress due to vertically running openings, which can lead to water penetration and flame exposure to wind.
Innovation Solution
A cover design featuring horizontal slits with molded material inside the hollow body, creating a horizontal opening that prevents rainwater penetration and includes strategically placed openings for air circulation, with a design that deflects wind and enhances flame stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vertical openings are formed in the lid by punching out circular areas, then air circulation is enabled, but precipitation can easily penetrate through the openings
Solution Approach 1:
Instead of creating vertical openings that allow direct rain penetration, the patent inverts the approach by creating horizontal openings. The material is formed upwards to create openings that face sideways rather than upwards, preventing rain from entering while still allowing air circulation. This inversion of the opening direction resolves the contradiction between protection and ventilation.
Solution Approach 2:
The patent applies different orientations of openings at different locations. Horizontal openings are created in the lid surface, and the material is formed upwards to create protective overlaps. This local modification of opening orientation and material formation provides targeted protection against precipitation while maintaining air flow through strategically placed openings.
2Reliability
If the hollow body is equipped with an upper end area that tapers upwards for drainage, then water penetration is drained away, but the structure becomes more complex
Solution Approach 1:
The patent extracts the drainage function from the hollow body structure and relocates it to the lid. By forming material upwards from horizontal openings, the lid itself creates drainage paths and protective overlaps, eliminating the need for a tapered end area in the hollow body. This transfers the drainage capability to the lid while simplifying the overall structure.
3Reliability
If openings are formed by forming tabs and bending them into the interior of the cup, then openings are created, but handling and packaging become more difficult
Solution Approach 1:
Instead of bending tabs into the interior of the cup as in prior art, the patent inverts the approach by forming material upwards from the lid surface. This creates openings that face sideways while maintaining a simpler, more handleable structure that doesn't require complex tab bending operations, improving ease of handling and packaging.
Data Source
Figure 1~2
Figure 3
AI summary
Lid (1) for a hollow body open at one end upwards in which a candle is arranged, wherein the lid (1) is a hollow body open at the bottom and can be placed or screwed onto the hollow body open at the top, wherein the shell (3) of the lid (1) projects upwards beyond the shell of the hollow body open at the top when attached, wherein the shell (3) of the lid (1) is provided with openings and wherein, according to the invention, at least one opening is formed by the fact that the shell (3) has a slot between two points lying on a horizontal plane and that the material of the shell (3) is formed into the interior of the hollow body of the lid (1) below the slot, such that a substantially horizontal opening extends between the upper edge (9) formed by the slot and the lower edge (10) formed by the slot.