Cup-Shaped Closure Lid With Circumferential Recess for Straight Insertion
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Solution Overview
Problem
Existing closure lids for bores are unsuitable for secure sealing and alignment due to their design, leading to potential leaks and improper gripping, which results in crooked placement and inadequate sealing during closure.
Innovation Solution
A pot-shaped closure cover with a circumferential recess on its inside side wall, designed to accommodate engagement elements of a gripping device, ensuring secure and straight alignment and sealing, produced through punching, embossing, and deep-drawing processes, with engagement elements that snap into place for precise insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional closure lid with curved base wall is used, then the lid can be gripped by a suction cup, but the lid cannot lie flat and may lie crookedly on the support surface, leading to improper alignment and sealing
Solution Approach 1:
The patent applies preliminary action by providing a flat base wall on the closure lid before the gripping operation. This flat base wall ensures that the lid lies flat on the support surface during transport and insertion, establishing proper alignment beforehand. The circumferential recess is also formed in advance during manufacturing, preparing the lid for engagement with the gripping device's engagement elements. This preliminary preparation eliminates the crooked positioning problem that occurs with curved base walls.
2Ease of operation
If a closure lid with curved base wall is used, then it can be inserted into the bore, but the lid sits at an angle in the bore, causing insufficient sealing compound adhesion and potential leaks
Solution Approach 1:
The flat base wall is prepared in advance during manufacturing, ensuring the lid is pre-aligned to lie flat on the support surface. This preliminary alignment prevents the lid from sitting at an angle during insertion and ensures proper orientation when seated in the bore, allowing sealing compound to adhere uniformly and reliably.
Solution Approach 2:
The patent applies local quality by providing a flat base wall specifically in the region that contacts the support surface and sealing compound, while the side walls can remain conical or cylindrical for the insertion function. This localized flat surface ensures proper sealing adhesion without compromising the overall insertion capability.
3Manufacturing precision
If a circumferential recess is added to the closure lid for engagement elements, then secure gripping and straight alignment are achieved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent merges the formation of the circumferential recess with the existing deep-drawing manufacturing process. The recess is formed as part of the same forming operation that creates the pot-shaped closure lid, rather than requiring a separate post-processing step. This integration minimizes additional manufacturing complexity while achieving the desired alignment precision.
Solution Approach 2:
The circumferential recess is formed in advance during the manufacturing process, preparing the lid for engagement with the gripping device. This preliminary formation of the recess, combined with the flat base wall, ensures proper alignment is built into the component itself, reducing the need for complex alignment mechanisms during assembly.
Data Source
Figure 1~1a
Figure 2a~2b
Figure 3
AI summary
The invention relates to a closure cover (1) for a bore (B) which has an inner diameter (DB), wherein the closure cover (1) is cup-shaped and has a bottom wall (1b) and a side wall (1s) formed thereon, characterized in that the side wall (1s) has at least one circumferential recess (20) on its inside, in particular in the form of a groove or slot.