Patent ID: 8408367

Claim:
A drum brake comprising: an electromechanical actuating device; two brake shoes; a brake drum, the two brake shoes being pressed against the brake drum by the actuating device for actuation of the drum brake; a holder plate on which the two brake shoes are guided displaceably, radially to the brake drum, the holder plate having bearing blocks which are disposed on opposing ends of each of the two brake shoes and which guide the brake shoes radially displaceably relative to the holder plate and to the brake drum; the actuating device having a rotationally drivable gear wheel defining an axis of rotation, the location of which is fixed with respect to the holder plate; the actuating device further having two toothed racks which mesh with the gear wheel on diametrically opposite sides thereof, wherein each of the two toothed racks is operatively coupled to a respective one of the two brake shoes such that rotation of the gear wheel causes the two brake shoes to be pressed against the brake drum; and the actuating device further having two actuating levers operatively coupling each of the two toothed racks to a respective one of the two brake shoes, the two actuating levers being disposed separately from and radially inside the two brake shoes respectively, and being supported pivotably on the holder plate at a first end of each of the two actuating levers, and the two actuating levers being pivotably connected with the toothed racks at a second end of each of the two actuating levers, wherein a pivoting motion of the two actuating levers translates to a linear displacement of the two brake shoes.