Patent ID: 7138737

Claim:
A braking device for an electric motor, comprising: a rotor ( 10 , 10 ′) and a stator for a direct current series wound motor; a brake element ( 20 , 20 ′) which is movable between a braking position and an operating position, wherein a brake shoe ( 30 , 30 ′) which brakes the rotor ( 10 , 10 ′) in the braking position is mounted on the brake element ( 20 , 20 ′), wherein the brake shoe ( 30 , 30 ′) is mounted on the brake element ( 20 , 20 ′) on a trailing end relative to the direction of rotation of the rotor ( 10 , 10 ′), wherein the brake element ( 20 , 20 ′), in the braking position, rests on the trailing end on a fixed stop face ( 46 ′), wherein the stop face ( 46 ′) is fixed to a yoke part of a stator of the electric motor, and wherein the stop face ( 46 ′) has a predetermined angle of inclination relative to a radial direction, in order to attain a self-clamping of the brake element ( 20 , 20 ′), said self-clamping pressing the brake shoe ( 30 , 30 ′) against the rotor ( 10 , 10 ′).