In-line roller blade braking system

A roller blade comprising a frame, at least two rolling systems each having at least one wheel rotatably mounted on a transverse axis of rotation, and at least one braking component, the frame comprising at least one longitudinal plate on which the rolling systems and a foot blocking device for firmly attaching the foot to the roller blade are mounted inline, said plate having two portions, a fixed portion and a mobile portion, the fixed portion is firmly attached to the blocking device and receives at least said braking component, and the mobile portion receives at least one of the rolling systems positioned under the braking component in order to come into contact with the braking component, and to slow down the braking component when the mobile plate moves closer to the fixed portion, the roller comprising an actuation device arranged on the frame so as to be notably controlled with the foot or the leg of the user, characterized in that wherein said roller blade comprises a pusher and a triggering part, said pusher being linked to the actuation device, and to the triggering part, said triggering part having at least one plate adjacent to the rolling system, said plate being mounted so as to rotate about a transverse axis or to undergo longitudinal translational motion with the fixed portion, and translationally with the mobile portion for passing from a locking position to an unlocking position under the action of the actuation device, said plate blocking the separation between said fixed and mobile portions during locking, and on the contrary, allowing the fixed and mobile portions to move closer to one another during unlocking.