Garbage Can Lid Locking Device for Mechanical Arm
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Solution Overview
Problem
Existing garbage can lid locking devices fail to securely close the lid when the container is tilted for emptying by a mechanical arm, allowing access to pests and unintended opening.
Innovation Solution
A locking assembly comprising a mounting bracket, upper arm assembly, and lower arm assembly that secures the lid in a fixed position using an adjustable retaining member, allowing the device to move from a locked to an open position when grasped by the mechanical arm, without requiring modification to the container.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hinged lid connection is used for easy opening and closing, then the lid can swing open upon inversion for dumping, but the closure is not secure and contents can be easily accessed by pests or subjected to unintended opening
Solution Approach 1:
The locking device is pre-configured with a retaining member and arm assembly that automatically engages when the lid is closed, providing secure locking before the container is transported or tilted. The device is prepared in advance to prevent unauthorized opening while maintaining easy operational access through the mechanical arm mechanism.
Solution Approach 2:
The locking device acts as an intermediary mechanism between the lid and container body, providing an additional security layer. The retaining member extends over the lid to prevent opening, while the mechanical arm serves as an authorized intermediary that can release the lock when needed for legitimate dumping operations.
2Reliability
If a locking device is embedded in the lid during manufacturing, then the lid can be locked when closed, but the device cannot be opened when the container falls over and may be inadvertently opened
Solution Approach 1:
The locking device transitions from a static embedded mechanism to a dynamic system with movable arms and a retaining member that can pivot and adjust. The arm assembly can move between locked and unlocked positions based on container orientation, allowing the device to adapt to tilted or overturned positions while maintaining secure locking when the container is upright and the lid is closed.
Solution Approach 2:
The locking device automatically responds to container orientation changes through its mechanical design. When the container is tilted or overturned, the arm assembly naturally shifts position due to gravity and mechanical linkage, causing the retaining member to disengage from the locked position. This self-adjusting mechanism eliminates the need for additional sensors or complex control systems.
3Reliability
If a locking device is affixed in a semi-permanent assembly, then the lid can be locked when closed, but the device is not adaptable for use with mechanical arm grasping and cannot be unlocked through the mechanical arm
Solution Approach 1:
The locking device is designed with dual functionality: it provides secure lid locking through the retaining member while simultaneously incorporating a mechanical interface that works with standard garbage truck mechanical arms. The arm assembly includes gripping surfaces and pivot points that allow the mechanical arm to grasp, tilt, and automatically unlock the device during the dumping process, making it universally compatible with existing truck equipment.
Solution Approach 2:
The locking device is divided into separate functional components: a mounting bracket for attachment to the container, a retaining member for lid security, and an arm assembly with upper and lower arms that interface with the mechanical arm. This segmentation allows each component to perform its specific function while working together as an integrated system that is both secure and mechanically operable.
4Strength
If the locking device requires modification of the container for attachment, then the device can be securely mounted, but the installation process becomes complex and may damage the container
Solution Approach 1:
The locking device is designed to be attached to the exterior surface of the container without requiring any modification to the container structure. The mounting bracket uses adhesive or clamp-based attachment methods that extract the need for drilling, welding, or other invasive installation processes, thereby preserving container integrity while providing secure mounting for the locking mechanism.
Data Source
AI summary
A lid retaining device adapted to secure the lid of a container. The device adapted for receipt on the container and for contact with a mechanical arm of a garbage truck, wherein a grasping force applied to the device will move the device from a closed position to an open position. The device having a lid retaining means with an adjustable height, the height adapted to allow the lid be retained at a position that is not completely closed.