EP 4128483 A1 20230208 - ROTOR FOR AN ELECTRIC MOTOR INCORPORATING ACOUSTIC ABSORPTION ELEMENTS
Title (en)
ROTOR FOR AN ELECTRIC MOTOR INCORPORATING ACOUSTIC ABSORPTION ELEMENTS
Title (de)
ROTOR FÜR EINEN ELEKTROMOTOR MIT SCHALLABSORPTIONSELEMENTEN
Title (fr)
ROTOR POUR MOTEUR ÉLECTRIQUE INTÉGRANT DES ÉLÉMENTS D'ABSORPTION ACOUSTIQUE
Publication
Application
Priority
- FR 2002933 A 20200325
- FR 2021050374 W 20210304
Abstract (en)
[origin: WO2021191518A1] The invention relates to a rotor (10) for an electric motor (30), comprising: - a rotor shaft (12) mounted for rotation about an axis (X); - a lamination stack (14) coaxially mounted on the rotor shaft (12), said lamination stack (14) comprising a plurality of first internal cavities (141) and second internal cavities (142); - a plurality of permanent magnets (15) housed inside the first internal cavities (141) of the lamination stack (14); - a front flange (17) and a rear flange (19) coaxially mounted on the rotor shaft (12) and axially arranged on either side of the lamination stack (14); characterised in that at least two of the second internal cavities (142) each house at least one acoustic absorption element (16), said at least one acoustic absorption element (16) being able to attenuate the vibration and/or the mechanical and/or magnetic noise generated by the rotor during its operation within the electric motor.
IPC 8 full level
CPC (source: EP US)
H02K 1/276 (2013.01 - US); H02K 1/2766 (2013.01 - EP); H02K 5/24 (2013.01 - US); H02K 5/24 (2013.01 - EP)
Citation (search report)
See references of WO 2021191518A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021191518 A1 20210930; CN 115428300 A 20221202; EP 4128483 A1 20230208; FR 3108803 A1 20211001; FR 3108803 B1 20220311; US 2023353011 A1 20231102
DOCDB simple family (application)
FR 2021050374 W 20210304; CN 202180024087 A 20210304; EP 21714655 A 20210304; FR 2002933 A 20200325; US 202117907296 A 20210304