Spring-Loaded Lid Handle with Upright Alignment for Animal-Proof Locking
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Solution Overview
Problem
Household refuse containers often have removable lids that are easily dislodged or removed by animals, allowing unauthorized access to their contents, as they lack effective locking mechanisms that prevent access unless the lid is upright.
Innovation Solution
A locking container lid with a spring-loaded actuating handle that can only be actuated when the lid is upright, featuring spring-loaded locking wings that engage with the container to secure it, and an alignment system that prevents handle operation when the lid is not upright, ensuring secure closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a removable lid is used on a refuse container, then the container is easy to access and empty, but the lid can be easily dislodged or removed by animals, failing to prevent unauthorized access
Solution Approach 1:
The locking mechanism uses spring-loaded locking members that automatically engage when the lid is placed on the container and can be disengaged by applying upward force to the actuating handle. The system transitions between locked and unlocked states dynamically, providing both security and ease of operation.
Solution Approach 2:
The actuating handle serves as an intermediary mechanism that translates user action into locking member movement. When the handle is pulled upward, it disengages the locking members from the container walls, allowing lid removal without directly manipulating the locking members themselves.
2Reliability
If a locking mechanism is added to prevent unauthorized access, then security is improved, but the device complexity increases
Solution Approach 1:
The locking mechanism is divided into separate functional components: spring-loaded locking members that engage with the container walls, an actuating handle for disengagement, and an alignment system with guide slots. This segmentation allows each component to perform its specific function independently, simplifying the overall design.
Solution Approach 2:
The spring-loaded locking members automatically engage with the container walls when the lid is placed on the container, providing self-locking functionality without requiring manual intervention. The alignment system also automatically guides the locking members into position through the guide slots.
3Reliability
If the locking mechanism requires precise alignment for engagement, then secure locking is achieved, but the ease of operation is reduced
Solution Approach 1:
The guide slots in the alignment system are positioned asymmetrically relative to the locking members, allowing the lid to be placed on the container in multiple rotational positions. The asymmetric slot geometry guides the locking members into engagement regardless of the initial placement orientation.
Solution Approach 2:
The alignment system serves multiple functions: it guides the locking members into engagement, allows for multiple placement orientations, and ensures proper positioning of the actuating handle. This multi-functionality eliminates the need for separate alignment mechanisms.
4Ease of operation
If the actuating handle can be operated in any position, then ease of operation is improved, but the container lid can be removed when not upright, compromising security
Solution Approach 1:
The alignment system adds a rotational dimension constraint to the handle operation. The guide slots are oriented vertically, allowing handle actuation only when the lid is in the upright position. This dimensional constraint prevents handle operation when the container is knocked over or lying on its side.
Solution Approach 2:
The alignment system acts as an intermediary between the handle and the locking members, mediating handle operation based on lid orientation. The guide slots transmit handle movement to the locking members only when the lid is properly positioned, blocking unauthorized disengagement when the container is knocked over.
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 effectively prevents unauthorized access by animals, allowing the lid to be removed only by a human and maintaining secure engagement with the container, even when knocked over, without requiring precise alignment for lid placement.
Implementation Method 1
the locking mechanism includes at least one locking member that is biased to a locked position and moveable between the locked position and an unlocked position
Implementation Method 2
an actuating system which is integral with the container lid and includes at least a handle that is biased to a handle locked position and moveable between the handle locked position and a handle unlocked position through an application of mechanical force
Implementation Method 3
an alignment system in the actuating handle that operates to disable the actuating handle when the container lid is not upright
Data Source
AI summary
A locking container lid with actuating handle and an accompanying container to which the locking container lid is able to be selectively secured. The locking container lid with actuating system that includes a spring-loaded handle and an alignment system that ensures the handle can only be actuated when the container lid is upright. It also has a locking mechanism that includes spring-loaded opposing locking wings that move laterally and are sized to engage substantially more than half of the rim of the accompanying container when in a locked position. The locking container lid with actuating handle and accompanying container are structured so that once it is locked on the accompanying container, the locking container lid can freely rotate around the accompanying container but cannot be lifted off absent actuation of the actuating handle while the container lid and accompanying container are standing upright.