Conduit Adapter Elongated Female End Securement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing adapters for connecting nonmetallic conduits to boxes and metallic systems often experience separation and leakage due to inadequate securement, especially under environmental stressors like freeze-thaw cycles, leading to costly repairs and inefficient installation processes.
Innovation Solution
An adapter with a significantly elongated female end, measuring at least 2 inches, and a total length equal to or greater than its outer diameter, featuring a transition portion with a tapered inner surface and a grip region, which enhances the securement of conduits and reduces the likelihood of separation during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional adapters with short female ends are used, then device complexity is reduced, but connection reliability deteriorates due to separation and leakage under environmental stress
Solution Approach 1:
The adapter is divided into distinct functional regions: a grip region with external threads for pipe connection, a transition portion with tapered inner surface for conduit insertion, and an elongated female end for securement. This segmentation allows each region to optimize its specific function, with the elongated female end providing enhanced connection reliability without making the entire adapter excessively complex.
Solution Approach 2:
The adapter employs dimensional changes by extending the female end length significantly (at least 2 inches) compared to conventional adapters. This elongation in the longitudinal dimension provides greater surface area for glue bonding and mechanical interlocking, thereby improving connection reliability while maintaining a relatively simple overall structure.
2Productivity
If conventional adapters with short female ends are used, then manufacturing cost is reduced, but installation efficiency deteriorates due to frequent separation and leakage requiring repairs
Solution Approach 1:
The elongated female end is designed to preliminarily secure the conduit through extended glue bonding surface and mechanical interlocking before environmental stressors act on the connection. This preliminary securement prevents separation and leakage, eliminating the need for costly repairs and reinstallation, thereby improving installation efficiency.
3Reliability
If the female end is elongated to at least 2 inches, then conduit securement is improved, but adapter material consumption increases
Solution Approach 1:
The adapter concentrates material in the critical female end region where it is most needed for conduit securement. The elongated female end (at least 2 inches) provides enhanced glue bonding surface and mechanical interlocking, while other regions of the adapter maintain minimal necessary thickness. This local quality approach improves conduit securement without proportionally increasing overall material consumption.
Data Source
AI summary
An adapter for connecting conduit to a threaded component such as for connecting a PVC conduit to a threaded pipe includes a tube having a threaded end and a conduit-receiving female end to receive the conduit, the female end having a length of at least 70% of the total length of the adapter. The female end includes an elongated chamber having a length of at least two inches and at least as long as an outer diameter of the adapter. In other aspects the adapter includes an inner transition portion having a tapered inner surface, and in further aspects the adapter includes a grip region having recesses and such that an installer grasping the adapter can grip the adapter with a thumb and multiple fingers while pressing the adapter into a palm of the hand.