Weatherproof Junction Box Inserts for Efficient Assembly
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Solution Overview
Problem
Existing injection molded conduit boxes require time-consuming and inefficient threading of holes to mate with threaded conduits, inserts, and boxes, which is inconvenient and inefficient.
Innovation Solution
A weatherproof electrical junction box with unthreaded holes and inserts featuring unthreaded exteriors and partially threaded interiors, fixed using solvent bonding, press fitting, or fasteners, allowing for efficient assembly without the need for post-molding threading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If threading is performed on injection molded conduit boxes after molding, then threaded conduits can be mated with the box, but the manufacturing process becomes time-consuming and inefficient
Solution Approach 1:
The patent applies preliminary action by incorporating threaded inserts directly into the mold during the injection molding process, so that the threading is created in advance along with the box itself. This eliminates the need for post-molding threading operations, thereby maintaining threaded conduit compatibility while significantly improving manufacturing efficiency.
Solution Approach 2:
The patent merges the threading operation with the injection molding process by integrating threaded inserts into the mold. This combines two separate operations (molding and threading) into one simultaneous process, eliminating the time-consuming sequential threading step while ensuring proper threaded conduit compatibility.
2Adaptability or versatility
If threaded inserts are added to injection molded boxes, then threaded conduit connection is enabled, but the device complexity increases
Solution Approach 1:
The patent merges the threaded insert component with the box manufacturing process by integrating it into the mold. This combination approach enables threaded conduit connection capability while avoiding the complexity of assembling separate threaded components, as the threading is created directly during molding.
Solution Approach 2:
The patent applies universality by designing the mold to create threaded inserts that serve multiple functions: providing threaded conduit connection capability, maintaining structural integrity of the box, and enabling standardization across different box configurations. This multi-functionality reduces overall device complexity despite adding connection capability.
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 solution enables quick and efficient assembly of weatherproof electrical junction boxes by eliminating the need for post-molding threading, improving manufacturing efficiency and convenience.
Implementation Method 1
the insert may be fixed within the unthreaded hole by solvent bonding the molded insert to the molded electrical junction box while the molded insert is within the unthreaded hole
Data Source
AI summary
A weatherproof electrical junction box that includes a molded electrical junction box and an insert is disclosed. Specific implementations may comprise a molded electrical box comprising four side walls, a back wall, a front opening, two screw bosses extending toward the front opening, and an unthreaded hole extending through a first side wall of the four side walls. Specific implementations may comprise an insert, the insert comprising an unthreaded exterior and a partially threaded interior. The insert may be fixed within the one unthreaded hole.