초록 ▼

An electromechanical brake, in particular for vehicles, has an electric actuator which generates an actuation force and acts on at least one frictional element so as to press the latter, in order to bring about a frictional force, against a rotatable component of the brake which is to be braked. In

An electromechanical brake, in particular for vehicles, has an electric actuator which generates an actuation force and acts on at least one frictional element so as to press the latter, in order to bring about a frictional force, against a rotatable component of the brake which is to be braked. In order to keep the actuation force to be applied by the actuator low, there is, between the component to be braked and the electric actuator, an arrangement which brings about the self-energization of the actuation force generated by the electric actuator. In the event of a deviation between the setpoint value and the actual value, a device for comparing a setpoint value of the frictional force with the actual value of the frictional force controls the electric actuator, in order to correspondingly increase or decrease the generated actuation force, with the result that the actual value is approximated to the setpoint value of the frictional force. Fluctuations in the coefficient of friction thus do not have a disruptive effect.

대표청구항 ▼

[ What is claimed is:] [1.]1. Electromechanical brake for vehicles, having an electric actuator which generates an actuation force and acts on at least one frictional element in order to press it, in order to produce a frictional force, against a rotatable component of the brake which is to be brake

[ What is claimed is:] [1.]1. Electromechanical brake for vehicles, having an electric actuator which generates an actuation force and acts on at least one frictional element in order to press it, in order to produce a frictional force, against a rotatable component of the brake which is to be braked, wherein between the component which is to be braked and the electric actuator there is an arrangement which brings about self-energization of the actuation force generated by the electric actuator, which self-energization arrangement has at least one wedge with an angle of inclination .alpha. which is supported on an associated abutment in a sliding or rolling fashion such that an input force F.sub.in which is applied to the self-energization arrangement by means of the electric actuator and a supporting force F.sub.B which results during a braking operation are acting on different surfaces of the wedge, and wherein there is a device for comparing a set point value of the frictional force with the actual value of the frictional force, which device, in the event of a deviation of the actual value from the set point value, drives the electric actuator in order to correspondingly increase or decrease the generated actuation force, and thus approximates the actual value to the set point value of the frictional force.