Cooking apparatus
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Solution Overview
Problem
Existing cooking apparatuses are prone to malfunction due to accidental activation of the heating device through the knob, leading to potential fires or burns.
Innovation Solution
A cooking apparatus design featuring a knob that is rotatably mounted on a control panel, with a stopper and locking pin mechanism that prevents rotation unless the button is moved in a specific direction, ensuring intentional operation of the heat source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a knob is provided to operate the heating device, then the ease of operation is improved, but the reliability deteriorates due to accidental activation
Solution Approach 1:
The button must be pressed in advance to release the locking pin from the anti-rotation portion before the knob can be rotated. This preliminary action ensures that accidental rotations are prevented while allowing intentional operation when the button is deliberately pressed first.
Solution Approach 2:
The locking pin acts as an intermediary mechanism between the button and the knob. It transfers the action of pressing the button into the release of rotational constraint on the knob, providing a controlled interface that prevents direct accidental activation.
2Reliability
If a locking mechanism is added to prevent accidental activation, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The locking pin is integrated into the button structure, and the anti-rotation portion is incorporated into the stopper that is already part of the knob assembly. By merging these functions into existing components rather than adding separate mechanisms, the complexity increase is minimized while achieving reliable protection against accidental activation.
Data Source
AI summary
A cooking apparatus includes a housing, a heat source on one side of the housing, a control panel couplable to the housing, a knob rotatably mountable on the control panel to operate the heat source and movable rearwardly, a stopper between the control panel and the knob and including an anti-rotation portion configured to prevent a rotation of the knob, a button movably couplable to the knob in a left-to-right direction, and a locking pin accommodated in the anti-rotation portion and secured to the button so as to move along the button. The locking pin is deviated from the anti-rotation portion based on movement of the button, the knob is rotatable while the knob is moved rearwardly and the locking pin is deviated from the anti-rotation portion, and the knob is rotated to operate the heat source.