US 12,435,809 B2
Filling an armature space of an actuator
Markus Moosmann, Grünkraut (DE); Karlheinz Mayr, Bregenz (AT); Thilo Schmidt, Meckenbeuren (DE); and Dominik Guldenschuh, Freiburg (DE)
Assigned to ZF Friedrichshafen AG, Friedrichshafen (DE)
Filed by ZF Friedrichshafen AG, Friedrichshafen (DE)
Filed on Apr. 13, 2023, as Appl. No. 18/300,005.
Claims priority of application No. 10 2022 203 777.4 (DE), filed on Apr. 14, 2022.
Prior Publication US 2023/0332710 A1, Oct. 19, 2023
Int. Cl. F16K 31/06 (2006.01); H01F 7/08 (2006.01); H01F 7/121 (2006.01); H01F 7/16 (2006.01)
CPC F16K 31/0675 (2013.01) [H01F 7/081 (2013.01); F16K 31/0693 (2013.01); F16K 31/0696 (2013.01); H01F 2007/086 (2013.01); H01F 7/121 (2013.01); H01F 7/1607 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An electromagnetic actuator (1) for a motor vehicle with a fluid space (16) configured to be fluidically connected to the actuator (1) when the actuator (1) is installed in the motor vehicle, the actuator (1) comprising:
a movable armature in an armature space (6), the armature comprising a movable armature rod (8),
wherein the actuator (1) is configured to fill the armature space (6) with fluid via movement of the armature rod (8) drawing fluid from the fluid space (16) into the armature space (6) through a fluid path (9) when the armature rod (8) is fluidically connected to the fluid space (16), and
wherein the actuator (1) is configured such that an evacuation of the armature space (6) of fluid during operation of the actuator (1) is prevented by a fluid-space-side radial bore (11) of the armature rod (8) being closed during a stroke of the actuator.