Biased Slide Lock for Pail Lids
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Solution Overview
Problem
Existing pail locking systems are difficult to open, especially from above, as they require significant effort and do not facilitate easy access when the pail is on the ground.
Innovation Solution
A biased locking mechanism featuring a sliding member coupled to the lid, which is biased into a locked configuration, allowing the lid to be unlocked by overcoming the spring bias and disengaging a stop, enabling easier opening and closing with overlapping feet for secure locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional locking mechanism is used, then the lid can be securely locked, but it requires significant effort and is difficult to open, especially from above
Solution Approach 1:
The locking mechanism transitions from a static locked state to a dynamic unlocking state through spring bias. The spring continuously applies force to maintain the locked position, and when the user applies sufficient force to overcome the spring bias, the slide moves to the unlocked position, enabling easy opening from above without requiring significant sustained effort
Solution Approach 2:
The spring acts as an intermediary element between the slide and the stop. It mediates the interaction by providing a controlled resisting force that must be overcome to unlock, but once overcome, allows smooth movement. The spring bias creates a mechanical advantage that reduces the effort needed by the user while maintaining secure locking
2Reliability
If the slide is biased into locked configuration, then secure locking is maintained, but the mechanism becomes more complex
Solution Approach 1:
The spring provides self-service by automatically maintaining the locked configuration without requiring external intervention. Once the slide is in the locked position, the spring continuously exerts biasing force to keep it there, ensuring reliable locking. The mechanism self-regulates the locking state through the spring's elastic properties, reducing the need for complex control systems
Solution Approach 2:
The system utilizes changes in the spring's elastic parameters (compression, expansion) to control the locking state. The spring's physical state changes continuously to maintain the locked position, and when the user applies sufficient force, the spring compresses further before releasing the slide. This parameter-based control achieves reliable locking with minimal mechanical complexity
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 allows for effortless opening and secure closing of pail lids, improving user convenience and accessibility, particularly when the pail is on the ground, while maintaining a locked configuration to prevent accidental opening.
Implementation Method 1
The first sliding member is preferably biased into the locked configuration. By overcoming the bias of the spring, the slide is moved to disengage a stop connected the container
Data Source
AI summary
A biased sliding lock for use with containers provides a locking mechanism to lock the lid relative to a pail. The bias can be overcome to place the container in an unlocked configuration allowing the lid to be rotated relative to the pail. The locking mechanism preferably includes a slide with a leg which may cooperate with a leg of the pail to prevent rotation of the lid relative to the pail in the locked configuration. The legs may have angled surfaces to facilitate closing directly into the locked configuration for at least some embodiments.