Water Resistant Control Box Seal Land and Rib Design
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Solution Overview
Problem
Outdoor electronics enclosures face weather infiltration issues due to openings, which current solutions address with additional sealants like liquid or foam, increasing labor and material costs.
Innovation Solution
An enclosure design featuring a housing with a seal land and a cover with ribs that create multiple lines of sealing engagement, eliminating the need for additional sealants by using a combination of materials and elastic deformation for a watertight seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional sealant is applied between the tray and the enclosure to prevent weather infiltration, then weather resistance is improved, but labor cost and material cost increase
Solution Approach 1:
The sealing function is merged with the structural components of the enclosure. The seal land is integrated into the housing structure, and the ribs are integrated into the tray structure. This combination eliminates the need for separate sealant materials and reduces installation labor while maintaining weather resistance.
Solution Approach 2:
The enclosure structure itself provides the sealing function through the interaction between the seal land and ribs. The ribs are elastically deformable and automatically seal against the seal land when the tray is installed, without requiring external sealant application or additional sealing operations.
2Reliability
If multiple separate lines of sealing engagement are created using ribs and flange, then sealing reliability is improved, but device complexity increases
Solution Approach 1:
The sealing function is segmented into multiple independent lines of sealing engagement. The ribs create first and second sealing lines, while the flange creates a third sealing line. This segmentation provides redundant sealing paths, ensuring that if one sealing line fails, others remain effective, thereby improving overall sealing reliability.
Solution Approach 2:
The ribs are designed with specific elastic deformability parameters that allow them to conform to the seal land surface under compression. This parameter optimization enables reliable sealing contact without requiring complex adjustment mechanisms or additional sealing components.
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
The design effectively seals the enclosure against rain and weather infiltration, meeting industry standards without the need for additional sealants, thus reducing costs and simplifying installation.
Implementation Method 1
the ribs are elastically deformed by pressure against the seal land
Data Source
AI summary
An enclosure includes a housing having an opening and a seal land adjacent to the opening. A cover has a plurality of ribs and is configured to be fastened to the housing to cover the opening such that the plurality of ribs are sealingly engaged against the seal land.