Conduit Connector Spring Mechanism Tool-Free Installation
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Solution Overview
Problem
Current electrical conduit connectors, particularly two-part locknut connectors, are labor-intensive to install and require tools, leading to safety issues, misalignment, and increased installation time due to the need for disassembly and reassembly, which can result in loose connections and damage to threads.
Innovation Solution
A conduit connector design featuring a spring with engagement tangs and an antishort bush that allows for quick and tool-free installation and removal without accessing the junction box interior, providing a secure and reusable connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two-part locknut connectors are used to establish rigid connections, then connection reliability is improved, but installation time and labor intensity increase due to disassembly and reassembly requirements
Solution Approach 1:
The connector is divided into two separate parts: a male end with integrated locknut and a female end with spring mechanism. This segmentation allows each part to be optimized independently - the male end provides threading for secure attachment while the female end provides snap-in installation capability, resolving the contradiction between reliability and installation speed
Solution Approach 2:
The locknut is pre-assembled onto the male end at the factory, eliminating the need for on-site assembly. This preliminary action ensures proper threading alignment and locknut tightness before installation, reducing installation time while maintaining connection reliability
2Reliability
If locknut connectors are disassembled and reassembled during installation, then connection is established, but thread damage and misalignment risks increase
Solution Approach 1:
The locknut is pre-assembled onto the male end with proper threading engagement at the factory. This preliminary action eliminates the need for field disassembly and reassembly, preventing thread damage and misalignment that occur during manual handling and installation
Solution Approach 2:
The connector design allows the male end to be inserted through the knockout hole without requiring the locknut to be removed or re-threaded. The spring mechanism on the female end provides self-aligning capability, reducing the risk of thread damage during installation
3Reliability
If tools are used to tighten locknut connectors, then connection security is improved, but safety risks increase due to tool handling in elevated positions
Solution Approach 1:
The connector is designed to be installed without requiring tools for tightening. The spring mechanism provides self-adjusting tension that secures the connection automatically during snap-in installation, eliminating the need for electricians to handle tools at elevated positions and reducing safety risks
4Reliability
If two hands are required for connector installation, then proper assembly is ensured, but productivity decreases due to inability to hold tools or conduit simultaneously
Solution Approach 1:
The connector design allows one-handed operation where the spring mechanism automatically engages and secures the connection as the male end is inserted through the knockout hole. This self-service mechanism eliminates the need for a second hand to hold or manipulate components, improving installation efficiency while maintaining assembly accuracy
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 rapid, tool-free installation and secure connection of conduits to junction boxes, reducing labor costs and safety risks while minimizing the risk of loose connections and thread damage.
Implementation Method 1
a spring disposed within the hollow center and extending out of the connecting end
Data Source
AI summary
In one embodiment, the conduit connector can comprise: a body comprising a hollow center capable of receiving a conduit in a receiving end, wherein the hollow center extends from the receiving end to the connecting end; a spring disposed within the hollow center and extending out of the connecting end, wherein the spring comprises engagement tangs extending into the hollow center, toward the connection end, and spring tangs extending past the connection end and spaced apart a distance greater than or equal to an opening diameter in a junction box; and an antishort bush located in the connecting end of the body, retaining the spring in the body.