Gas Ignition Switch with Angle-Triggered Child-Safe Actuation
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Solution Overview
Problem
Existing gas switches are prone to accidental ignition due to easy operation, which can lead to risks from mistake pressing by children and repetitive ignitions during fire adjustment.
Innovation Solution
A gas safety ignition switch design featuring a rotary knob unit with a driving diaphragm and actuator configuration that prevents ignition when the knob is pressed, utilizing a movable actuator and driving diaphragm to ensure the micro switch is not activated unless a specific angle is reached, thereby preventing accidental ignitions and repetitive sparks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the ignition method is made easy for operational convenience, then the ease of operation is improved, but the safety deteriorates due to accidental ignition risks
Solution Approach 1:
The actuator is designed to move from an initial position to a triggered position only when the rotary knob is turned to a specific angle range. This dynamic positioning ensures that the micro switch is activated only under the correct operational condition (knob turned), preventing accidental ignition while maintaining ease of use when the correct operation is performed.
Solution Approach 2:
The invention changes the operational parameter from simple pressing to a combination of turning the knob to a specific angle and then pressing. This parameter change (from 0-dimensional pressing to 1-dimensional angular position + pressing) ensures that ignition occurs only when the correct sequence and angle are achieved, improving safety without significantly complicating the operation.
2Ease of operation
If the spindle is made pressable for adjustment, then the ease of operation is improved, but the reliability deteriorates due to repetitive ignitions
Solution Approach 1:
The actuator's position is dynamically linked to the angular position of the rotary knob. When the knob is turned to adjust the fire, the actuator moves to a position that does not trigger the micro switch. Only when the knob is turned to the specific ignition angle range does the actuator reach the triggered position, preventing repetitive ignitions during adjustment while maintaining ease of operation.
3Device complexity
If the micro switch is directly connected to the rotary knob, then the device complexity is reduced, but the safety deteriorates due to lack of angle verification
Solution Approach 1:
The actuator serves as an intermediary between the rotary knob and the micro switch. Instead of directly connecting the micro switch to the rotary knob, the actuator translates the angular position of the knob into a positional signal that triggers the micro switch only at the correct angle. This adds a safety verification layer without significantly increasing device complexity.
Data Source
AI summary
The present invention provides a gas safety ignition switch, comprising components of a gas switch body, a closer unit, a rotary knob unit, a presser, a micro switch and an electronic ignition device, characterized in that: one side of the gas switch body is configured with an opening, the opening being corresponding to an actuation point of the micro switch and the spindle, an actuator, configured inside the opening in a movable manner, including an contacting end and a pushing end, the pushing end being corresponding to the actuation point of the micro switch; the edge of the driving diaphragm is also configured with an indentation corresponding to one end of the actuator; thus, when pressing the spindle of the rotary knob unit, the driving diaphragm can move so that the contacting end of the actuator will be right inside the indentation, and when turning the spindle, the driving diaphragm will turn synchronously to tightly push against the contacting end, and will push the actuator to further drive the micro switch, so that the electronic ignition device can ignite the gas.