US 12,305,724 B2
Brake pad assembly for a disk brake system and disk brake system
Hatem Shahin, Pfaffenhofen (DE)
Assigned to HL MANDO CORPORATION, Pyeongtaek (KR)
Filed by HL MANDO CORPORATION, Pyeongtaek (KR)
Filed on Nov. 3, 2022, as Appl. No. 18/052,210.
Claims priority of application No. 102021212499.2 (DE), filed on Nov. 5, 2021.
Prior Publication US 2023/0141199 A1, May 11, 2023
Int. Cl. F16D 65/097 (2006.01); F16D 55/225 (2006.01); F16D 65/00 (2006.01)
CPC F16D 65/0006 (2013.01) [F16D 55/225 (2013.01); F16D 65/0971 (2013.01); F16D 2200/0056 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A brake pad assembly (2) for a disk brake system having a brake piston (11) and a caliper finger (20) movably coupled to the brake piston (11), the brake pad assembly (2) comprising
a back plate (4) having a front side for facing a brake disk (1) of the disk brake system and a back side (6),
a friction layer (3) arranged at the front side of the back plate (4) for contacting a friction surface of the brake disk (1), and
a shim (5) arranged on the back side (6) of the back plate (4), wherein the shim (5) comprises a back surface (12) having a top edge (14) and first and second side edges (16,17),
wherein the back surface (12) of the shim (5) contains a pressure region (13) that is configured to be pushed on by the brake piston (11) upon brake application, and the pressure region (13) has a circular upper edge, and
characterized in that
the shim (5) comprises a plurality of cutouts (19,19′, 19″) formed on the back surface (12) for noise reduction,
wherein the plurality of cutouts (19,19′, 19″) is arranged at least partly between the pressure region (13) of the back surface (12) of the shim (5) and the top edge (14) of the back surface (12) of the shim (5) and/or
wherein the plurality of cutouts (19,19′, 19″) is arranged at least partly between the pressure region (13) of the back surface (12) of the shim (5) and at least one of the first side edge (16) and the second side edge (17) of the back surface (12) of the shim (5),
wherein at least a portion of the plurality of cutouts (19,19′,19″) forms a pattern corresponding to a circular segment.