Roof Tile Junction Box Flashing for Angle-Mismatched Installation
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Solution Overview
Problem
Installation of junction boxes on exterior surfaces with angled tile surfaces is difficult and hazardous due to the mismatch in angles between the tile and sub-tile surfaces, requiring multiple tools and resources.
Innovation Solution
A junction box design that includes a flashing and housing box, where the flashing is positioned parallel to the tile surface and the housing box is angled to match the sub-tile surface, allowing for quick installation with reduced resources and tools, and includes features to seal against moisture and withstand UV and harsh temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a standard junction box is installed on an angled tile surface, then the housing box can be attached to the sub-tile surface, but the mismatch in angles between tile and sub-tile surfaces creates installation difficulty and hazard
Solution Approach 1:
The junction box is divided into two distinct components: a flashing component that interfaces with the angled tile surface and a housing box component that attaches to the sub-tile surface. This segmentation allows each component to be optimized for its specific interface, with the flashing handling the angled tile interface and the housing box handling the flat sub-tile interface, thereby eliminating the angle mismatch problem during installation
Solution Approach 2:
The flashing component acts as an intermediary element between the angled tile surface and the flat sub-tile surface. It provides a transition interface that bridges the angular discrepancy, allowing the housing box to be securely attached to the sub-tile surface while maintaining proper alignment and sealing against the angled tiles
2Manufacturing precision
If multiple tools and resources are used to accommodate angle differences, then proper installation can be achieved, but installation time and resource requirements increase
Solution Approach 1:
The flashing component is pre-formed with the appropriate angular geometry to match the tile surface angle. This preliminary preparation of the correct angle in the flashing component eliminates the need for field adjustments, measurements, or specialized tools during installation, allowing installers to simply attach the pre-configured flashing to the tiles and then mount the housing box
Data Source
AI summary
A junction box that includes a flashing configured to cover tiles of a roof of a structure and a housing box. The flashing includes a raised portion that includes a top edge and raised portion defines an opening. The housing box includes a recess portion, an expose portion extending from the recess portion, and a junction lip extending from the recess portion in a direction away from the expose portion. A recess between the junction lip and the recess portion defines a junction recess. At least a portion of the recess portion is configured to pass through the opening until at least a portion of the top edge extends into the junction recess.