Meter Box Locking Mechanism with External Blade Removal
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Solution Overview
Problem
Many locking mechanisms for ringless utility boxes are complex and difficult to install or remove, often requiring dexterity and necessitating hand entry into the box, which can be challenging for utility workers with impaired grasping abilities or when dealing with live meter boxes.
Innovation Solution
A locking mechanism featuring a bracket and movable blade that can be secured and removed from the box surface without hand entry, utilizing a pin and slot mechanism for easy operation and incorporating a barrel lock for secure attachment and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism is designed to be secure and reliable, then security against unauthorized access is improved, but the mechanism becomes more complex and difficult to install or remove
Solution Approach 1:
The locking mechanism is divided into separate functional components: a bracket that mounts to the box, a movable blade that engages with the box wall, and a lock body. This segmentation allows each component to be optimized independently while simplifying the overall installation and removal process.
Solution Approach 2:
The blade is designed to be movable relative to the bracket, transitioning between locked and unlocked positions. This dynamic element allows the mechanism to secure itself automatically when installed while maintaining simplicity during the installation and removal processes.
2Reliability
If a locking mechanism requires high dexterity for operation, then secure attachment is achieved, but it becomes challenging for utility workers with impaired grasping abilities
Solution Approach 1:
The locking mechanism is designed to be self-securing through the interaction between the movable blade and the box wall. Once the bracket is mounted and the blade is positioned, the mechanism automatically secures itself without requiring the operator to perform complex manual operations or reach into the box interior.
3Ease of operation
If the locking mechanism requires hand entry into the box for installation or removal, then precise control is achieved, but it creates safety hazards when dealing with live meter boxes
Solution Approach 1:
The critical control elements of the locking mechanism are extracted and positioned outside the box interior. The bracket mounts to the exterior wall, the blade engages from the outside, and the lock body operates externally. This extraction eliminates the need for hand entry into the box, removing the electrical hazard while maintaining operational control.
Data Source
AI summary
A locking mechanism includes a bracket configured for mounting on a wall of a securable box and receiving a lock body to selectively secure a cover to the securable box preventing access to an interior of the box. The mechanism further includes a blade that is movable relative to the bracket between a locked position and an unlocked position to secure or remove the blade and bracket to or from a securable box wall respectively. The blade and bracket can be secured to and removed from the securable box without an operator's hand extending into the interior of the box.