CONTACT SYSTEM OF DISCONNECTOR Russian patent published in 2016 - IPC H01H73/04 

FIELD: machine building.

SUBSTANCE: contact system of disconnector contains at least one fixed contact, movable contact with support base and movable shafts (b1, b2) that are hollow tubes. The movable contact includes at least first movable contact spring, on its head the first contact surface is formed, it interacts with the movable contact. Springs (c1, c2, c3, c4) and connecting parts are agreed with the movable shafts (b1, b2) that form the rotating support shafts (c5). Two ends of the movable shaft, respectively, are inserted in the rotating support shaft creating the hinge joint. The movable shafts (b1, b2) and cam surfaces (221, 231), corresponding to main part (21) form the rolling friction. The movable shaft can rotate over the rotating support shaft due to hinge joint between it and spring. Under action of the movable contact between the movable shaft and movable contact not hard friction but rolling friction with low contact force and short rolling time occurs, this reduces time of repulsing of the movable contact.

EFFECT: increased work reliability and service life of the movable shaft and entire contact system with compact design.

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