Fire Alarm Device With Dual Buttons And Waterproof Film
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Solution Overview
Problem
Conventional fire alarm devices lack reliability and environmental adaptability due to single-button designs and non-waterproof connections, leading to failure in high humidity environments.
Innovation Solution
A fire alarm device with two buttons and a pivotally connected press portion that increases water resistance, allowing normal operation even if one button fails, and includes a mechanism for resetting and maintaining the alarm state, enhancing reliability and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single button design is used in the fire alarm device, then the device structure is simple, but the reliability decreases because the alarm cannot be triggered if the button fails
Solution Approach 1:
The single button is divided into two separate buttons (first button and second button), each capable of independently triggering the alarm. This segmentation allows the system to maintain reliability even if one button fails, as the other can still perform the alarm function.
Solution Approach 2:
Different buttons are positioned at different locations on the device housing, creating local functional redundancy. The first button is arranged at a first location while the second button is arranged at a second location, ensuring that failure of one button does not compromise the overall system reliability.
2Reliability
If conventional production manner is used without waterproof measures, then the manufacturing process is simple, but the device becomes prone to water vapor corrosion and breakdown in high humidity environments
Solution Approach 1:
A waterproof film is arranged between the button and the junction to seal the connection interface. This thin film barrier prevents water vapor from penetrating into the internal alarm circuit, protecting against corrosion while maintaining a relatively simple manufacturing process.
Solution Approach 2:
The waterproof film acts as an intermediary layer between the button (external component) and the junction (internal electrical connection). This mediator prevents direct contact between moisture and the electrical junction, eliminating the corrosion pathway while keeping the overall structure simple.
3Object-affected harmful factors
If buttons are not sealed with waterproof measures, then the device structure is simple, but the internal alarm circuit is prone to water vapor corrosion in high humidity environments
Solution Approach 1:
A waterproof film is arranged between the button and the junction to seal the connection interface. This thin film barrier prevents water vapor from penetrating into the internal alarm circuit, protecting against corrosion while maintaining a relatively simple manufacturing process.
Data Source
Figure 1
AI summary
The present utility model provides a fire alarm device, which includes: a base portion; a press portion which is capable of moving relative to the base portion to deviate away from the base portion or close to the base portion; an alarm switch which is capable of moving relative to an alarm circuit, to control turn-on and turn-off of the alarm circuit; and a plurality of buttons which are mounted on the base portion and capable of converting movement of the press portion to movement of the alarm switch; wherein the device has an alarm enable position, wherein, at this point, the press portion deviates close to the base portion, to press the plurality of buttons and indirectly press the alarm switch to turn on the alarm circuit; and an alarm disable position, wherein, at this point, the press portion deviates away from the base portion, to release the plurality of buttons and indirectly release the alarm switch to turn off the alarm circuit. The fire alarm device of the present utility model has higher reliability and environment adaptability.