SWITCH Russian patent published in 2016 - IPC H01H19/02 

FIELD: measuring equipment.

SUBSTANCE: invention is related to design of the switches used in the measuring equipment, particularly in multi-value measures electric resistance and measuring bridges. Switch contains panel 1 with switching contacts 2 and distributed common contact 3, axis of switch 7, bearing crossbar 5, in which there is brush assembly 6, made of flat conductive discs arranged with clearance on the axis of the cross bar 5. Holes in the cross beam have oval in direction, parallel to axis of the switch. Projections and cavities are made on the circumferential surface, for example, of sine shape, which interact with similar projections on crossbar, thus reducing radial force at switching. In the cross-beam additional axes with rollers can be installed interacting with projections and recesses on the panel, which reduces friction pair "roller-ledge".

EFFECT: technical result is improvement of contact, reduced variation of transient resistance of contact pairs and increased stability to the level necessary when using switches in multi-value measures resistance of high accuracy, as well reduced radial force at switching.

3 cl, 8 dwg