| 摘要 |
FIELD: burglar and fire alarm devices applicable for warning about fires on objects and intervening of criminal into object under guard. SUBSTANCE: alarm device has body 1, thermosensitive member 13 and actuating member. Actuating member includes eccentric 10 and pendulum 7. Pendulum 7 is fitted with its lower end on axle 9 in body for swinging in the vertical plane, and with its other end for contacting the bell 5 suspended from the body upper part. Pendulum 7 has recess which accommodates eccentric 10 rigidly connected with its hole on axle 9 secured to body 1 with the tail having key-hole for winding the alarm device. Eccentric diameter equals the recess width. Thermosensitive member 13 is fitted on pins 14 for easy removal from them. One of the pins is located on pendulum 7, and the other, on body 1. Attached with its one end to axle 9, whose tail has key hole, is spring 11 for winding the alarm device, and spring other end is attached to pin 12 installed on the body. For disengaging the alarm device or preventing its actuation, installed on the body is switch 18 which may tip over up to its stop against pendulum 7. EFFECT: extended field of application of the safe, low-price, portable device needing no power for warning about fire occurrence or intervention of burglar into premises under guard. |
