Security Loop Cable Assembly with Polarized Connector
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Solution Overview
Problem
Existing security loop connectors for alarm circuits are inadequate as they fail to disconnect reliably without damage under stress and can confuse authorized personnel, leading to improper connections and potential abandonment of the alarm system.
Innovation Solution
The security loop cable assembly features self-evident connectors that disconnect safely without damage and include a polarized plug assembly with an end-of-line resistor, ensuring proper connection and disconnection, and optionally uses a Y-splitter for selective interruption of the loop, facilitating easy installation and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing security loop connectors are used, then the alarm circuit can be installed, but the connectors fail to disconnect reliably without damage under stress
Solution Approach 1:
The connector design incorporates a cam mechanism with a cam surface that gradually transitions from an engaged position to a disengaged position. This gradual transition cushions the disconnection process, preventing sudden stress spikes that could damage the connector or cable, while still achieving reliable disconnection when needed.
2Ease of operation
If existing security loop connectors are used, then connection can be made, but authorized personnel are confounded as to proper connection
Solution Approach 1:
The connector employs asymmetric design features including a polarized plug assembly with a specific orientation and a cam mechanism that only engages in one direction. This asymmetry provides self-evident visual and physical cues that guide authorized personnel to the correct connection orientation, eliminating confusion and ensuring proper installation without requiring additional instructions or training.
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 provides a secure, reliable, and user-friendly connection system that prevents damage during disconnection and minimizes errors, ensuring the alarm circuit functions correctly and can be easily reset, reducing the likelihood of system abandonment.
Implementation Method 1
Inside the case two of the wires of the loop cable are permanently joined to opposite sides of an end-of-line resistor
Data Source
AI summary
A security loop cable assembly is attached to the distal end of the main cable of an alarm system. The assembly has an enclosure with a main electrical connector inside the enclosure. The main cable terminates at the main connector. The enclosure releasably receives a polarized plug assembly that contains the ends of a loop cable. The plug assembly includes a housing and a case that are selectively joined. Inside the case two of the wires of the loop cable are permanently joined to opposite sides of an end-of-line resistor. The housing and case can be momentarily separated to thread one of them through an aperture in the protected object or gate. The plug assembly can be removably inserted into the enclosure, whereupon the main cable connector engages a loop connector to form an electrical circuit through the first and second wires and the end-of-line resistor.