Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention provides a mechanical door lock password protection device which comprises a main body. A through hole for a lock cylinder to be installed is formed in the main body. The mechanical door lock password protection device is characterized in that a pushing plate is arranged on the main body and can vertically slide relative to the main body, a chute provided with positioning grooves is formed in the push plate, multiple movable keys are arranged on the main body and are arranged in the chute, and flanges are arranged on at least two keys and matched with the positioning grooves. The mechanical door lock password protection device can be conveniently opened, is simple in inside structure, low in manufacture price and capable of protecting a lock hole against artificial damage or blockage and is especially suitable for an anti-theft door.
The invention provides a mechanical door lock password protection device which comprises a main body. A through hole for a lock cylinder to be installed is formed in the main body. The mechanical door lock password protection device is characterized in that a pushing plate is arranged on the main body and can vertically slide relative to the main body, a chute provided with positioning grooves is formed in the push plate, multiple movable keys are arranged on the main body and are arranged in the chute, and flanges are arranged on at least two keys and matched with the positioning grooves. The mechanical door lock password protection device can be conveniently opened, is simple in inside structure, low in manufacture price and capable of protecting a lock hole against artificial damage or blockage and is especially suitable for an anti-theft door.
Door lock password unlocking method, storage medium, password unlocking device and door lock
| Europäisches Patentamt | 2021
Door lock protection device, panel of door lock protection device and door lock system
| Europäisches Patentamt | 2024