Telecom Enclosure Lock Assembly with Torque-Limiting Cam Stop
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Solution Overview
Problem
Telecommunications enclosures require secure locking mechanisms that resist harsh outdoor conditions and unauthorized access, while also protecting internal components from damage due to excessive torque during opening and closing.
Innovation Solution
A lock assembly with a housing, slider, and cam mechanism that moves between extended and retracted positions, featuring a stop to limit cam rotation and absorb torque, along with a resilient member for self-locking and secondary locking devices for enhanced security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cam mechanism is used to move the slider between extended and retracted positions, then the locking and unlocking functionality is achieved, but excessive torque during cam rotation can damage the lock assembly
Solution Approach 1:
The housing includes a recess that receives and cushions the cam during rotation, absorbing excessive torque before it can damage the lock assembly components. This preliminary protective measure prevents damage while maintaining operational functionality.
2Reliability
If the slider is made moveable between extended and retracted positions, then secure coupling and uncoupling is achieved, but the mechanism becomes more complex
Solution Approach 1:
The cam and slider mechanism is integrated within a unified housing structure, combining multiple functions (rotation, linear movement, coupling, uncoupling) into a single compact assembly. This merging reduces overall complexity while maintaining reliable operation.
3Strength
If stops are added to limit cam rotation, then torque damage is prevented, but the device complexity increases
Solution Approach 1:
The stops are integrated directly into the housing structure rather than being separate components. This merging of the stop feature with the housing minimizes additional complexity while providing effective torque limitation.
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 lock assembly effectively secures telecommunications enclosures, inhibits unauthorized access, and protects internal components from torque-related damage, ensuring reliable operation and dual security features.
Implementation Method 1
at least one resilient member configured to bias the slider toward the extended position
Data Source
AI summary
A lock assembly is provided for releasably coupling a dome of a telecommunications enclosure to a base of the telecommunications enclosure. The lock assembly generally includes a housing having at least one stop, a slider disposed at least partly within the housing and moveable between an extended position for coupling the dome of the telecommunications enclosure to the base of the telecommunications enclosure and a retracted position for uncoupling the dome from the base, and a cam configured to rotate and move the slider between the retracted position and the extended position. The cam is engageable with the at least one stop of the housing to stop rotation of the cam when the slider moves to the retracted position and/or to stop rotation of the cam when the slider moves to the extended position.