US 11,788,340 B2
Domestic electrical appliance
Dominik Walz, Nabburg (DE); Shaojiang Ren, Nanjing (CN); Georg Spiessl, Altendorf (DE); and Albert Dirnberger, Neunburg vorm Wald (DE)
Assigned to EMZ-HANAUER GMBH & CO. KGAA, Nabburg (DE)
Filed by emz-Hanauer GmbH & Co. KGaA, Nabburg (DE)
Filed on May 3, 2021, as Appl. No. 17/246,838.
Claims priority of provisional application 63/021,695, filed on May 8, 2020.
Claims priority of application No. 102020113130.5 (DE), filed on May 14, 2020; and application No. 102021108809.7 (DE), filed on Apr. 8, 2021.
Prior Publication US 2021/0348434 A1, Nov. 11, 2021
Int. Cl. E05F 15/616 (2015.01); A47L 15/42 (2006.01); E05B 47/06 (2006.01); D06F 39/14 (2006.01); E05B 47/00 (2006.01)
CPC E05F 15/616 (2015.01) [A47L 15/4259 (2013.01); D06F 39/14 (2013.01); E05B 47/0603 (2013.01); E05B 2047/0068 (2013.01); E05Y 2900/30 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A domestic electrical appliance, comprising:
an appliance main body having an access opening to a usable chamber formed inside the appliance main body;
a door which is movably mounted on the appliance main body and which in an open position frees the access opening and in a closed position closes the access opening;
a door latch for holding the door closed in the closed position; and
a door opener for opening the closed door, wherein the door opener includes a first coupling structure displaceably arranged on one of the appliance main body and the door, an electrically controllable drive unit for driving the first coupling structure, and a second coupling structure arranged on the other of the appliance main body and the door, wherein the first and second coupling structure are configured for push- and pull-transmitting, releasable coupling engagement with one another,
wherein the door opener is an assembly which is structurally separate from the door latch, the door latch and the door opener establishing separate force transmission paths for the transmission of a holding-closed force of the door latch and an opening force of the door opener between the door and the appliance main body,
wherein the door opener is configured to transfer, by driving of the first coupling structure, from a first opener state in which the door is in the closed position and the first coupling structure is in coupling engagement with the second coupling structure into a second opener state in which the door is slightly open and the coupling engagement between the first and second coupling structure is maintained, wherein the door opener, after being transferred from the first opener state into the second opener state, is configured to return, by driving of the first coupling structure, back into the first opener state while maintaining the coupling engagement between the first and second coupling structure, and
wherein a transfer, effected by driving of the first coupling structure, of the door opener from the first into the second opener state separates a force-based connection between the appliance main body and the door via the door latch, wherein a return movement, effected by driving of the first coupling structure, of the door opener from the second into the first opener state, while maintaining the coupling engagement between the first and second coupling structure, re-establishes the force-based connection between the appliance main body and the door via the door latch.