Patent ID: 8376097

Claim:
A backing and friction-pad unit ( 30 ) of a drum brake, comprising: a brake pad backing ( 1 ) with a backing surface ( 2 ) that serves to receive at least one friction pad ( 3 ), said backing surface ( 2 ) defining at least one opening ( 4 , 4 ′) arranged on or inside the backing surface ( 2 ) which is produced by shaping a material section ( 5 , 5 ′) of the brake pad backing ( 1 ) so that the material section ( 5 , 5 ′) projects from the brake pad backing ( 1 ) at one or more prescribed angles a in the pressing direction ( 7 ), wherein the material section ( 5 , 5 ′), together with the opening ( 4 , 4 ′), forms an impression cavity ( 6 ) when the friction pad ( 3 ) is pressed onto the backing surface ( 2 ); the friction pad ( 3 ) that is created by pressing friction material onto the brake pad backing ( 1 ), wherein friction material of the friction pad ( 3 ) is pressed through the opening ( 4 , 4 ′) and made into a positive-fit element ( 16 ) that has a thickened area that protrudes beyond the opening ( 4 , 4 ′) and holds the friction pad ( 3 ) on the brake pad backing ( 1 ) with a positive fit; and at least one folded edge ( 8 ) on one or more edge sections ( 11 , 12 , 13 ) of at least one of the lengthwise sides ( 10 ) of the brake pad backing plate ( 1 ) with said folded edge ( 8 ) folded downwardly from the backing surface ( 2 ) in a direction away from the friction pad ( 3 ) and over the edge section so that the folded edge ( 8 ) lies to a side of the backing surface ( 2 ) for the friction pad ( 3 ) and extends laterally beyond the edge section of the lengthwise side ( 10 ), and wherein an outer surface ( 9 ) of the folded edge ( 8 ) forms a sliding surface for laterally guiding the brake pad backing plate ( 1 ) along the housing of the brake assembly.