| 摘要 |
PURPOSE: A single automatic fire alarming device is provided to ring a bell by expansion of a spring, thereby realizing semi-permanent lifetime of the alarming device without replacing a battery. CONSTITUTION: A single automatic fire alarming device comprises the following units. A bimetal switch operates above a fixed temperature. A spring can be expanded by an operation of a switch connected to a bimetal. A howling can is hit by the expanded spring. The bimetal switch is coupled with a base member and a pin to which an axis(12) and a pin are attached. |
