Container lid release apparatus and method
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Solution Overview
Problem
Conventional food processor lids often require significant force to remove due to the sealing engagement between the gasket and the container, as the increasing container volume without air entry creates differential pressure, making lid removal difficult.
Innovation Solution
A lid release mechanism that incorporates a pivotally attached arm with a camming surface interacting with a curved contact surface on the container, providing a mechanical advantage and allowing the lid to tilt slightly, thereby breaking the sealing engagement and facilitating removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lid forms a tight interference fit with the container to ensure sealing engagement, then the sealing reliability is improved, but the ease of lid removal deteriorates due to differential pressure
Solution Approach 1:
The camming surface performs a preliminary action by tilting the lid slightly before complete removal. This initial tilting motion breaks the sealing engagement between the gasket and container, creating a gap that allows air to enter and equalize pressure, thereby facilitating subsequent easy removal of the lid
Solution Approach 2:
The camming surface is configured with a curved geometry that converts rotational or linear arm movement into a tilting motion of the lid. This curved surface provides mechanical advantage and ensures smooth transition from the locked sealing position to the tilted release position, effectively breaking the seal without requiring excessive force
2Ease of operation
If significant force is applied to remove the lid against differential pressure, then the lid can be removed, but the device complexity increases due to requiring higher strength components
Solution Approach 1:
The mechanism performs preliminary action by breaking the seal through slight tilting before complete lid removal. This prevents the buildup of large differential pressures that would require high-strength components, allowing standard components to suffice
Solution Approach 2:
The curved camming surface acts as a mechanical lever that amplifies user input force while reducing the peak forces required compared to direct pull-off. The geometry provides mechanical advantage throughout the motion, eliminating the need for high-strength locking mechanisms
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 mechanism enables easier lid removal by providing a mechanical advantage and breaking the sealing engagement, reducing the force required to remove the lid from the container.
Implementation Method 1
movement of the arm relative to the lid causes the camming surface to contact the contact surface of the engagement member to exert an upward force on the arm causing at least a portion of the lid to move in a direction away from the container
Data Source
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AI summary
A lid release mechanism and a lid locking mechanism for a food processing apparatus are disclosed. The lid release mechanism facilitates removal of a lid from a container via a camming surface in some embodiments. For removal, the lid may be initially tilted to break the seal between the lid and the container. A lid locking mechanism may be included, and in some embodiments, the motion to unlock the lid (e.g., pivoting an arm) also starts lid removal.