DEVICE FOR CONTROLLING THE BRAKING OF A TRAILER

A device (1) for controlling the braking of a trailer, comprising at least a body (2) in which is formed at least a first seat (3), at least a distributor element (12) slidably housed within the first seat (3) and movable between an idle position and at least a braking position, piloting means (13) of the distributor element (12) connectable to the braking system of a towing vehicle, the distributor element (12) defining a reaction surface communicating with the braking gap and acting in the direction opposite to the piloting means (13); at least a second seat (4) formed in the body (2) and communicating with the first seat (3), between the first and second seats (3, 4) being provided a separation element (5), at least a spool (24) slidably housed within the second seat (4) and movable between a normal operating position and at least an emergency position, being provided at least a third chamber (4a) acting on the spool (24) to move it from the normal operating position towards the emergency position and at least a fourth chamber (4b) acting on the spool itself on the opposite side of the third chamber (4a); being provided at least a first channel (25) connecting the third chamber (4a) with said braking gap (9) and at least a second channel (26) connecting the fourth chamber (4b) to the first male joint (10).