Automatically controlled actuator device for brakes

An actuator device for brakes suitable to be operatively connected to at least a first braking device acting on a brake disc or drum, so as to exercise a braking action,

• the actuator device for brakes being fitted with a lever and/or pedal for its manual operation, and being provided with a body which houses at least one piston which acts on a hydraulic circuit fluidically connected to said at least one first braking device for the hydraulic operation thereof,
• the lever and/or pedal being operatively connected to said piston so as to command its movement or operating stroke in an operating direction, so as to exert pressure on the fluid of the hydraulic circuit,
• wherein the actuator device for brakes is fitted with an automatic actuator, operatively connected to the piston and/or to the operating lever and/or pedal, so as to increase, control or reduce the braking action imposed manually by operating the operating lever and/or pedal, controlling the operating stroke of the piston;
• wherein the body identifies a first chamber which houses said piston fitted with at least a first head, the first chamber being provided with a delivery opening fluidically connected to the at least one first braking device so as to receive the fluid pressurised by the first head during the stroke of the piston, wherein the body identifies a second chamber which houses a second head of the piston, the second chamber being in connection with the automatic actuator so as to exercise on the piston a thrust action in accordance or discordance with the thrust action exercised by the operating lever and/or pedal;
• wherein said first and second chambers are positioned in series with each other and at least partially separated by a separation septum fixed in relation to the body, the piston comprising a stem slidingly ioined in an airtight manner to a hole made on said separation septum, the stem connecting the first and second head of the piston to each other.