EP 4073912 A1 20221019 - ELECTRIC MOTOR FOR A HANDHELD POWER TOOL
Title (en)
ELECTRIC MOTOR FOR A HANDHELD POWER TOOL
Title (de)
ELEKTROMOTOR FÜR EINE HANDWERKZEUGMASCHINE
Title (fr)
MOTEUR ÉLECTRIQUE POUR OUTIL ÉLECTRIQUE PORTATIF
Publication
Application
Priority
- DE 202019106968 U 20191213
- EP 2020084932 W 20201207
Abstract (en)
[origin: WO2021116039A1] The invention relates to an electric motor (1) of an AC voltage-operated handheld power tool (2), comprising a stator (6) which has a plurality of windings (9) which are accommodated in a stator laminated core (10) and have basic electrical insulation from said stator laminated core, in which stator laminated core a rotor (7) is mounted such that it can rotate about a rotation axis (8), wherein the rotor (7) has a rotor shaft (11) on which a rotor laminated core (12) comprising a plurality of permanent magnets (13) is held, the rotor laminated core being electrically insulated from the rotor shaft (11), characterized in that the stator (6) is surrounded by a motor housing (15) which is electrically insulated from the windings (9) of the stator (6), and in that an additional electrical insulation (16) is formed between the motor housing (15) and the rotor shaft (11).
IPC 8 full level
H02K 7/14 (2006.01); H02K 5/08 (2006.01); H02K 7/00 (2006.01)
CPC (source: EP US)
H02K 5/08 (2013.01 - EP); H02K 5/15 (2013.01 - US); H02K 5/1732 (2013.01 - US); H02K 5/18 (2013.01 - US); H02K 7/003 (2013.01 - EP); H02K 7/145 (2013.01 - EP US); H02K 9/06 (2013.01 - US); H02K 11/21 (2016.01 - US); H02K 2213/03 (2013.01 - US)
Citation (search report)
See references of WO 2021116039A1
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)
DE 202019106968 U1 20210316; CN 114830507 A 20220729; EP 4073912 A1 20221019; US 2022302791 A1 20220922; WO 2021116039 A1 20210617
DOCDB simple family (application)
DE 202019106968 U 20191213; CN 202080086364 A 20201207; EP 2020084932 W 20201207; EP 20820905 A 20201207; US 202217837599 A 20220610