SUPPORT UNIT FOR MECHANICAL AND ELECTRICAL CONNECTION OF AT LEAST ONE PLUG-IN TR TUBE FOR PROTECTION FROM OVERVOLTAGE Russian patent published in 2010 - IPC H01T4/06 

FIELD: electricity.

SUBSTANCE: support unit (21) for mechanical and electrical connection of at least one plug-in TR tube (20) includes U-shaped housing with switching device (8) being situated in its bottom (3) to indicate or transmit faulty state. The housing consists of at least one aperture where at least one spring-loaded push-button actuator (1) interacting with a switching device. The push-button actuator, when TR-tube is plugged in, interacts with mechanical contact or with starting element installed into this mechanical contact, and moves inside the coupling link of the bottom. The lower projection (4) directed perpendicularly to push actuator movement, includes raked surface corresponding to reciprocal raked surface of the slider (7), which moves perpendicularly to movement in the bottom (3) in order to transform push actuator movement into perpendicular movement. Consequently, the slider may be moved from the first to the second state to actuate switching device. In addition, the slider may be preliminary loaded with spring element so that raked surfaces connect forced closure.

EFFECT: reliable actuation of switching device at small relative movements and reduced costs for plug-in TR tubes manufacture.

11 cl, 11 dwg