VESTIBULE ILLUMINATION SWITCH Russian patent published in 2008 - IPC F21V23/04 

FIELD: electricity.

SUBSTANCE: invention relates to switches of the vestibule local illumination incorporating appliances intended for switching the light from various zones of an apartment. To this end, a switching unit is cut into the door box consisting of two push-button switches without self-return and one limit switch with N.C. contact. Buttons of switches and limit extend above the door surface. Output contacts of two switches and limit switch are connected to one of contacts of the lamp illuminating the vestibule, the second contact of the lamp is connected to a loaded phase of the circuit, the input contact of the limit switch is constantly connected to a zero phase of the circuit, and the input contacts of push-button switches are connected to a zero phase of the circuit through a consecutive circuit of the dual three-position toggle-switches. End contacts of toggle-switches are connected inside of each toggle-switch cross-wise, two centre contact of each subsequent, closer to the switches unit of the toggle-switch, are in pairs connected to two end contacts of the previous toggle-switch nearest to them. The zero phase of the circuit is connected to one of centre contacts of the toggle-switch located far from the switches unit, and the input contacts of two push-button switches are in pairs connected to two end contacts of the toggle-switch nearest to them. At full closing of the door, the edge of a door simultaneously presses buttons of two push-button switches and limit switch so, that to switch over both of the push-button switches and opens the N.O. contact of the limit switch.

EFFECT: creation of the switch of the vestibule illumination with control over the travel of an entrance door.

2 closed, 1 dwg