A brush device (1) comprising: a first (11) and a second (12) flange disposed side by side, each flange extending radially between a rubbing face intended to rub against a moveable element and a flange head (71, 72) intended to be connected electrically to another moveable element, a first plate (41) rigidly fixed to the first flange only and extending tangentially above the head of the second flange, in such a way as to transmit, when this first plate is loaded by pressure means, pressure forces on the second flange, a second plate (42), distinct from the first plate, rigidly fixed to the second flange only and extending tangentially above the head of the first flange in such a way as to bear on said first flange in the event of relative motion of the second flange with respect to the first flange towards the first moveable element.