Stove Safety Knob Assembly with Automatic Locking Arm Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing stove safety knob assemblies are cumbersome and prone to mechanical failures, lacking a comprehensive solution for automatic locking and releasable features that ensure safe, convenient operation.
Innovation Solution
An automatically locking, releasable safety knob assembly with a base, adapter, and knob housing, featuring a slidable button and resiliently biased automatic locking arm, allowing the knob to freely rotate in an unlocked configuration and preventing accidental stove activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual locking mechanisms are used, then safety is provided, but ease of operation deteriorates due to cumbersome manual engagement
Solution Approach 1:
The locking mechanism automatically engages and disengages without requiring manual operation. The knob assembly self-locks when rotated to the off position and self-unlocks when rotated to the on position, eliminating the need for users to manually engage or disengage locking components.
Solution Approach 2:
The locking mechanism transitions from a static manual lock to a dynamic automatic lock that responds to knob rotation. The locking state changes automatically based on the rotational position of the knob, providing adaptive safety control.
2Ease of operation
If complex electronic automatic locking mechanisms are incorporated, then ease of operation improves, but device complexity increases and reliability deteriorates
Solution Approach 1:
The patent replaces complex electronic automatic locking mechanisms with a simpler mechanical automatic locking system. The locking action is achieved through mechanical components including a cam, follower, and spring mechanism that automatically engage or disengage based on knob rotation, eliminating the need for electronics while maintaining automatic operation.
Solution Approach 2:
The mechanical components automatically perform the locking and unlocking functions through the natural rotation of the knob, without requiring external power sources, control circuits, or electronic sensors.
3Reliability
If mechanical locking components are added, then safety improves, but device complexity increases
Solution Approach 1:
The locking mechanism is merged with the knob assembly itself rather than being a separate component. The cam and follower are integrated into the knob structure, and the locking action occurs as part of the normal knob rotation operation, eliminating the need for additional separate locking components.
Solution Approach 2:
The knob serves multiple functions: it controls the valve stem rotation, provides the locking mechanism through its rotational position, and actuates the cam-follower system. This multi-functionality reduces the need for separate components and simplifies the overall device structure.
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 assembly provides a convenient and reliable safety mechanism that reduces the risk of unintentional stove activation, enhancing user safety by automatically locking the knob in the 'off' position and allowing easy operation when needed.
Implementation Method 1
an automatic locking arm resiliently biased with the slidable button
Data Source
AI summary
The present technology relates to an automatically locking, releasable, safety knob assembly for a stove. The assembly includes a base with a locking notch. An adapter mates with the stove's valve stem and has a head, a tubular middle section, and an adapter base with a central aperture for receiving the valve stem. The knob includes a housing with a housing disk covering the base, an arm movement channel aligned with the locking notch in the locked configuration, and a central aperture for receiving the adapter head. The assembly further includes a sub-assembly with a slidable button allowing free rotation of the knob in the unlocked configuration, an automatic locking arm biased with the slidable button, and engagement with the button causing the arm to disengage from the locking notch and move in the arm movement channel, enabling the knob to freely rotate and rotate the valve stem.