Flexible Weatherproof Surround for Electrical Box Sealing
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Solution Overview
Problem
Existing methods fail to effectively weatherproof the gaps between electrical boxes and structural elements in buildings, allowing air and water infiltration, which is crucial for maintaining building integrity and compliance with weatherproofing standards.
Innovation Solution
A flexible weatherproof surround for electrical boxes, comprising a skirt portion and a flange that extends outward, providing a customizable opening for access to the electrical box's inner cavity, and attaching to building weatherproofing materials to seal gaps, with various cross-sectional designs and attachment methods to accommodate different electrical box shapes and sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If weatherproofing material is wrapped around the building, then air and water infiltration is prevented, but openings for electrical boxes create potential infiltration paths
Solution Approach 1:
The weatherproofing system is segmented into multiple functional components: the building wrap provides external weather protection, while the electrical box surround creates a separate sealed chamber with integrated access features. This segmentation allows the weatherproofing function to be maintained while providing dedicated access pathways to electrical boxes without compromising the overall seal.
Solution Approach 2:
The electrical box surround acts as an intermediary component between the building wrap and the electrical box. It provides a transition zone that maintains the weatherproof barrier while accommodating the electrical box and providing controlled access through integrated openings and flange structures.
2Reliability
If a surround is provided for electrical boxes, then gaps are sealed, but access to the inner cavity must be maintained
Solution Approach 1:
The surround is pre-configured with integrated openings and flange structures during manufacturing, eliminating the need for post-installation modifications to access the electrical box. The access pathways are prepared in advance as part of the sealed assembly, maintaining both seal integrity and ease of access.
Solution Approach 2:
The electrical box surround performs multiple functions simultaneously: it seals the gap between the building wrap and electrical box, provides structural support, and incorporates integrated access openings and flange features for cable management and maintenance access. This multi-functionality eliminates the need for separate access components.
3Manufacturing precision
If the flange extends inward to engage the electrical box, then a tighter seal is achieved, but the opening size must accommodate the box shape
Solution Approach 1:
The flange features localized engagement zones with varying degrees of inward extension tailored to specific regions. The flange can have different profiles at different locations, providing enhanced seal tightness where needed while maintaining compatibility with various electrical box shapes and sizes through adaptive local geometries.
Solution Approach 2:
The flange geometry parameters (extension distance, angle, profile) can be varied to accommodate different electrical box shapes and sizes. By adjusting these parameters, the same flange design can achieve tight seals on rectangular, circular, or other shaped boxes, providing versatility while maintaining seal integrity.
Data Source
AI summary
A surround for an electrical box has a sheet of flexible, weatherproof material having a skirt portion, and a flange extending at least outward relative to the skirt portion, the flange defining an opening within the skirt portion sized to provide access to an inner cavity of the electrical box.