| 摘要 |
<p>PURPOSE:To provide a magnetic alarm device usable as an alarm for the prevention of a damage by pocket-picking or at emergency by using two systems of circuits of an alarm buzzer and a light emitting diode to control the operation of the alarm buzzer. CONSTITUTION:The operation of an alarm buzzer 1 is carried out by two systems of circuits. When a power switch 4 is ON, a handbag is hung over the shoulder, and an alarm stopping magnet 6 suspended from a shoulder belt is separated from an alarm stopping magnetic sensor 5, a light emitting diode 9 is extinguished. In the state where the lid of the handbag is closed, the circuit is OFF since an alarming magnetic sensor 7 is in contact with an alarming magnet 8, and the alarm buzzer 1 is never rung. When the lid is opened, the alarming magnetic sensor 7 is separated from the alarming magnet 8, and the circuit is ON to ring the alarm buzzer 1. To prevent the operation of the alarm buzzer 1 when the lid of the handbag is opened, the alarm stopping magnet 6 suspended from the shoulder belt is brought into contact with the alarm stopping magnetic sensor 5 integrated into the handbag to light the light emitting diode.</p> |
