ON-OFF AND SWITCHING MECHANISM Russian patent published in 2014 - IPC H01H3/24 

FIELD: electricity.

SUBSTANCE: main structural component of a mechanism is a parallelepiped-shaped case square in its cross-section reacting to the atmospheric pressure. The case is made by moulding of an air-tight elastic resilient material, and it has four solid faces, fours elastic edges and two elastic domes instead of two end faces. The case is sealed and when vacuum is created it acts as a four-bar linkage deformed by the atmospheric pressure force into a rhomboidal parallelepiped with a sharp angle of 45°. Current-carrying rods and contacts are moulded into four edges of the parallelepiped. When the rectangular parallelepiped is deformed to the rhomboidal one, the contacts of the four rods are closed by pairs and switch on two electric circuits. The parallelepiped is switched off or reswitched by hand deforming back to the rhomboidal parallelepiped with an angle of 45°. Due to the variable volume of the parallelepiped the atmospheric pressure acts on it as a spring making its jump-like turning to 90°. At that the other two pairs of contacts are closed and the other two electric circuits are switched on. Thus, the atmospheric pressure force ensures required contact pressing, follow-through and roll, large velocity of contacts separation and a large gap between them.

EFFECT: design of a simple and producible mechanism ensuring high arc-suppressing capacity and safe and reliable switching of electric circuits in different operating conditions.

6 dwg