Gravity-Actuated Bin Locking Assembly with Pendulum Release
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Solution Overview
Problem
Municipal trash bins are prone to being blown open by strong winds and tampered with by animals, leading to messes and infestations, and existing locks are either too heavy or fail during automated garbage collection, posing safety risks.
Innovation Solution
A gravity-operated, pendulum-based locking assembly that secures the lid of trash bins and automatically unlocks when the bin is upended by an automated garbage collection truck, using a cord and support structure to ensure the lid remains closed during normal conditions and opens freely during collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a heavy metal lock is used to secure the trash bin lid, then the locking strength and security are improved, but the lock parts can fly off during automated garbage collection, causing dangerous projectiles and property damage
Solution Approach 1:
The patent replaces heavy metal locks with lightweight plastic locking components that are designed to be safe even if they detach during collection. The plastic material ensures that if parts fly off during automated garbage collection, they pose minimal danger compared to heavy metal alternatives.
2Force
If a heavy metal lock is used to prevent wind from blowing open the lid, then the resistance to wind force is improved, but the lock may fail or detach during the violent interaction of automated collection
Solution Approach 1:
The patent employs composite construction combining plastic body components with metal reinforcement elements strategically positioned for strength. This composite approach provides sufficient resistance to wind forces while keeping the overall assembly lightweight and safe for automated collection processes.
3Reliability
If existing locks are used to keep the bin closed, then security against animals and wind is improved, but the locks interfere with automated garbage collection by not disengaging properly
Solution Approach 1:
The patent incorporates a dynamic release mechanism that responds to the motion and orientation changes during automated collection. The locking system automatically disengages when subjected to the specific forces and angles encountered during truck-based collection, enabling seamless automated operation while maintaining security during normal placement.
4Reliability
If a retrofittable locking assembly is added to existing bins, then the security against wind and animals is improved, but the device complexity and installation requirements increase
Solution Approach 1:
The patent divides the locking system into separate modular components: a locking assembly that attaches to the bin body and a corresponding receptacle on the lid. This segmentation allows independent installation on existing bins without requiring complete system replacement, simplifying retrofittability while providing comprehensive security functionality.
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 locking assembly effectively prevents waste from scattering during windy conditions and allows for safe automated collection by disengaging the lock when the bin is upended, reducing the risk of injury and property damage while maintaining bin security.
Implementation Method 1
a gravity-actuated or gravity-operated release mechanism
Data Source
AI summary
A collection bin locking assembly with a gravity-actuated release mechanism is disclosed herein. The locking assembly includes a housing attached to the body of the bin and a separate cord support structure attached to the lid. When locked, a cord spans between a first cord support structure on the housing and the separate or second cord support structure on the lid. A pendulum is disposed within the housing which, due to gravity, automatically swings between a first, resting position and a second, unlocked positioned when the collection bin is moved from an upright position to an at least partially upended position. Furthermore, the first cord support structure includes a groove and, adjacent to the groove, a smooth, outwardly curved surface. When the pendulum swings, the cord is forced out of the groove and onto the adjacent smooth, outwardly curved surface where the cord will slip off, thereby unlocking the lid.