EP 3827503 A1 20210602 - ROTOR, ELECTRIC MOTOR, METHOD FOR PRODUCING A ROTOR AND USE OF A ROTOR AND ELECTRIC MOTOR
Title (en)
ROTOR, ELECTRIC MOTOR, METHOD FOR PRODUCING A ROTOR AND USE OF A ROTOR AND ELECTRIC MOTOR
Title (de)
ROTOR, ELEKTROMOTOR, VERFAHREN ZUR HERSTELLUNG EINES ROTORS SOWIE VERWENDUNG EINES ROTORS BZW. ELEKTROMOTORS
Title (fr)
ROTOR, MOTEUR ÉLECTRIQUE, PROCÉDÉ DE FABRICATION D'UN ROTOR ET UTILISATION D'UN ROTOR ET/OU D'UN MOTEUR ÉLECTRIQUE
Publication
Application
Priority
- DE 102018212431 A 20180725
- EP 2019069549 W 20190719
Abstract (en)
[origin: WO2020020787A1] The present invention relates to a rotor (R), comprising a shaft (1) having a longitudinal axis (L) and a rotor stack (2) connected at least in a rotationally secure manner to the shaft (1), wherein the rotor stack (2) is composed of individual sheet-metal laminates (21), wherein the rotor stack (2) is provided with an opening (22) for receiving the shaft (1), wherein the shaft (1) is a hollow shaft with a wall (11), wherein the wall (11) of the shaft (1) is provided on its side facing the opening (22) with recesses (12) running in the longitudinal direction, to an electric motor, in particular a synchronous or hybrid synchronous machine, comprising a rotor (R) and a stator (S), characterized by a rotor (R) according to at least one of the preceding claims, to a method for producing a rotor (R) according to at least one of the preceding claims, wherein the recess (12) is produced by machining processes, in particular milling, or forming processes, in particular pressing, and to a use of a rotor (R), in particular an electric motor having a rotor, according to at least one of the preceding claims, wherein the circumferential stiffness is reduced by way of the recesses (12), and/or wherein the recesses (12) are used as flux barriers for directing a magnetic field, and/or wherein the recesses (12) are supplied with a cooling medium.
IPC 8 full level
H02K 1/27 (2006.01); H02K 1/28 (2006.01); H02K 1/32 (2006.01); H02K 7/00 (2006.01)
CPC (source: EP US)
F16C 3/02 (2013.01 - EP); F16D 1/0852 (2013.01 - EP); H02K 1/02 (2013.01 - US); H02K 1/2766 (2013.01 - US); H02K 1/28 (2013.01 - EP US); H02K 1/32 (2013.01 - US); H02K 7/003 (2013.01 - EP US); F16C 2380/26 (2013.01 - EP); F16D 1/104 (2013.01 - EP); F16D 2001/103 (2013.01 - EP); H02K 1/2766 (2013.01 - EP); H02K 1/32 (2013.01 - EP)
Citation (search report)
See references of WO 2020020787A1
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
DOCDB simple family (publication)
WO 2020020787 A1 20200130; CN 112470366 A 20210309; DE 102018212431 A1 20200130; EP 3827503 A1 20210602; US 2021273510 A1 20210902
DOCDB simple family (application)
EP 2019069549 W 20190719; CN 201980048818 A 20190719; DE 102018212431 A 20180725; EP 19742735 A 20190719; US 201917261225 A 20190719