| 摘要 |
The present invention relates to an electric shutter switch for fire shutters of a building. The purpose of the electric shutter switch according to the present invention is to install a side plate using three optical points, replace an electronic brake, form a structure of automatically winding up a shutter, create a weight drop environment and realize a motor speed sensing function. To this end, the electric shutter switch comprises: a motor (9); a side plate (1) coupled to a case (13); a first reduction unit consisting of timing pulley (8,82) and a timing belt (81); a reduction gear unit consisting of a reduction gear string having a worm gear; a laser beam irradiator (7) creating three optical points; a photo interrupter (6) coupled to a bracket and sensing the speed of a worm using a light transmitting hole (52); and an interlocking controller (150). The electric shutter switch according to the present invention can enable quick horizontal alignment and precise construction when installing the electric shutter switch on concrete walls of a building, can easily control rotation of a rotary shaft without an electronic brake, can enable weight drop of the fire shutter with battery power even in the event of a power failure, can make lightweight a lower end bar of the shutter, and can improve durability of a fireproof screen. |
