| 摘要 |
The invention relates to a security and alarm lock intended to provide for the opening of emergency exits while preventing their unexpected or fraudulent utilization. According to figure 1, the lock is characterized by a case (1), a bolt (8) penetrating in the slot (2) and guided by a groove (7), on a pin (3), maintained in an opening position by means of a spring (10), fitted with a locking finger (6) and with an electric contact (12), a palet (18) on an arm (16) fixed to an axis (4) and actuated by a blade spring (13). An alarm equipment (14, 15 and 17) completes the device. The invention may be applied to doors of emergency exits in order to provide for an easy and automatic opening in the case of a disaster, panic or fire and to block them against any fraudulent opening attempt. The invention is applicable to the industry of protection against theft. |
