Patent ID: 7337882

Claim:
A braking system for a parking brake of a motor vehicle, comprising: at least one flexible cable (C 1 , C 2 ) for transmitting a braking operating force to at least one parking brake (B 1 , B 2 ) and a linear electromechanical actuator ( 10 ), which includes: a stationary rigid casing ( 12 ) defining a longitudinal axis (x), motor means ( 13 , 14 ) for imparting to a rotary member ( 15 ) a rotational movement about said axis (x), a tubular nut element ( 22 ) coupled in rotation to the rotary member ( 15 ) so as to be rotatable therewith and having an external thread ( 21 ) co-operating with a thread ( 20 ) fixedly joined to the casing ( 12 ) in order to move the nut along said axis, and an internal thread ( 23 ) opposite the external thread ( 21 ), a longitudinal rod ( 11 ) having a means ( 11 d ) for connection to the flexible cable (C 1 , C 2 ), a first portion ( 11 a ) which is threaded ( 24 ) and which co-operates with the internal thread ( 23 ) of the nut ( 22 ), and a second portion ( 11 b ) having a non-circular cross-section ( 11 c ), anti-rotation means ( 18 , 27 ) co-operating between the casing ( 12 ) and the second portion ( 11 b ) of the rod ( 11 ) to prevent the rotation of the rod about said axis so that the rod ( 11 ) is translatable longitudinally along said axis in response to the rotary movement imparted by the motor means ( 13 , 15 ).