Abstract: A brake device structure, in particular for skates with aligned wheels of the type including a boot associated with a support frame for the wheels, as well as a lever positioned rearwardly of a first end of the frame. The lever is engageable with a part of the boot. In the braking structure the lever is located at a second end and is pivoted to the frame and at an intermediate zone thereof hinged to a rack which controls the structure for forcing at least one brake element against a lateral surface of one or more of the wheels. This solution results in an effective braking operation, while keeping the wheels of both skates firmly in contact with the ground, even if the skate is travelling at a high rate of speed.