Electromechanical brake booster

摘要

The invention relates to an electromechanical brake booster with an electric motor and a helical gearing. The brake booster is used for coupling an auxiliary force via a driver into a piston rod. The invention proposes connecting a spindle of the helical gearing elastically via a spring element to the piston rod such that, in the event of rapid actuation of the brake, the helical gearing and a rotor of the electric motor do not have to be accelerated entirely muscle power. The muscle power required for actuating a brake is reduced as a result in the event of a rapid actuation of the brake.

主权项

1. An electromechanical brake booster, having:
a piston rod for transmitting an actuation force from a brake pedal to a piston of a master cylinder; and an electromechanical auxiliary force generator with which an auxiliary force for boosting the actuation force can be generated, wherein a power takeoff element of the auxiliary force generator is directly connected to the piston rod by an elastic element, the elastic element configured to apply an elastic force to said power takeoff element to pull said power takeoff element toward said piston rod.