EP 1481406 B1 20071128 - ELECTROMAGNETIC ACTUATOR WITH CONTROLLED ATTRACTION FORCE
Title (en)
ELECTROMAGNETIC ACTUATOR WITH CONTROLLED ATTRACTION FORCE
Title (de)
ELEKTROMAGNETISCHER AKTUATOR MIT KONTROLLIERTER ANZIEHUNGSKRAFT
Title (fr)
ACTIONNEUR ELECTROMAGNETIQUE A FORCE D ATTRACTION CONTROLEE.
Publication
Application
Priority
- FR 0300658 W 20030228
- FR 0202631 A 20020301
Abstract (en)
[origin: WO03075293A1] The invention concerns an electromagnetic actuator comprising an actuating member (6) connected to a relay armature (8) which is mobile under the effect of a drive member including at least a coil (1) for generating a magnetic flux in the core (2) having a surface extending opposite one surface of the relay armature (8), one at least of the opposite surfaces comprising at least one recessed portion (10), the relay armature (8) and the core (2) being arranged to define, in a first zone (12) of the relay armature (8) and of the core (2) including the recessed portion, a first magnetic path which is interrupted by an air gap at least equal to the recess of the recessed portion (10) when the relay armature (8) is pressed on the core (2), and in a second zone (13) of the relay armature (8) and of the core (2) excluding the recessed portion (10) a second magnetic path which is interrupted only by a residual air gap when the relay armature (8) is pressed on the core (2), the recessed portion having a total area not greater than the area bringing the magnetic flux to saturation in the second zone of the relay armature.
IPC 8 full level
H01F 7/08 (2006.01); H01F 7/16 (2006.01); H02K 33/00 (2006.01)
CPC (source: EP US)
H01F 7/081 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
WO 03075293 A1 20030912; AU 2003224230 A1 20030916; DE 60317777 D1 20080110; DE 60317777 T2 20081120; EP 1481406 A1 20041201; EP 1481406 B1 20071128; ES 2299696 T3 20080601; FR 2836755 A1 20030905; FR 2836755 B1 20040820; JP 2005519465 A 20050630; JP 4473582 B2 20100602; US 2005083159 A1 20050421; US 7042321 B2 20060509
DOCDB simple family (application)
FR 0300658 W 20030228; AU 2003224230 A 20030228; DE 60317777 T 20030228; EP 03720653 A 20030228; ES 03720653 T 20030228; FR 0202631 A 20020301; JP 2003573657 A 20030228; US 50474004 A 20040816