US 11,991,868 B2
Electrical appliance arrangement having an electrical appliance which can be fastened to a support element, in particular a wall
Martin Schörner, Bruchsal (DE); Joachim Nikola, Kraichtal (DE); and Hans Jürgen Kollar, Bruchsal (DE)
Assigned to SEW-EURODRIVE GMBH & CO. KG, Bruchsal (DE)
Appl. No. 16/979,015
Filed by SEW-EURODRIVE GMBH & CO. KG, Bruchsal (DE)
PCT Filed Feb. 15, 2019, PCT No. PCT/EP2019/025044
§ 371(c)(1), (2) Date Sep. 8, 2020,
PCT Pub. No. WO2019/170290, PCT Pub. Date Sep. 12, 2019.
Claims priority of application No. 10 2018 001 687.1 (DE), filed on Mar. 5, 2018.
Prior Publication US 2020/0413564 A1, Dec. 31, 2020
Int. Cl. H05K 7/20 (2006.01); H05K 7/02 (2006.01)
CPC H05K 7/2089 (2013.01) [H05K 7/02 (2013.01); H05K 7/2039 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A system, comprising:
an electrical appliance adapted to be fastened to a support element and including:
a heat sink;
circuit boards;
a housing; and
a power module including semiconductor switches adapted to be actuated in a pulse-width-modulated manner;
wherein each circuit board is fastened to the heat sink, and the heat sink is adapted to be fastened to the support element, the housing surrounding the circuit boards and being fastened to the heat sink;
wherein the power module is connected to the heat sink at a contact surface of the heat sink for dissipation of heat;
wherein the contact surface is arranged on a base plate of the heat sink;
wherein cooling fins are premolded on the heat sink on a side of the base plate located opposite the contact surface; and
wherein a plate-shaped support section, arranged parallel to the base plate, is premolded on a first one of the cooling fins, a plate-shaped wall section, arranged perpendicular to the base plate, is premolded on the base plate, and the base plate is disposed between the support section and the wall section.