EP 4114636 A1 20230111 - METHOD FOR PRODUCING A GEAR WHEEL FOR AN ELECTROMECHANICAL POWER ASSISTED STEERING SYSTEM
Title (en)
METHOD FOR PRODUCING A GEAR WHEEL FOR AN ELECTROMECHANICAL POWER ASSISTED STEERING SYSTEM
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES GETRIEBERADS FÜR EINE ELEKTROMECHANISCHE HILFSKRAFTLENKUNG
Title (fr)
PROCÉDÉ DE PRODUCTION DE ROUE DENTÉE POUR SYSTÈME DE DIRECTION ASSISTÉE ÉLECTROMÉCANIQUE
Publication
Application
Priority
- DE 102020202922 A 20200306
- EP 2021054959 W 20210301
Abstract (en)
[origin: WO2021175750A1] The present invention relates to a method for producing a gear wheel comprising a hollow shaft (4), which is connected, by a connecting element (6) encapsulated in plastic by injection moulding, to a ring gear (5) extending coaxially around the hollow shaft at a radial distance, in which method the ring gear (5) and the hollow shaft (4) are positioned in the mould cavity (73) of an injection mould (7), in an ejector-side mould half (72), which is axially closed by a nozzle-side mould half (71), and molten plastic is injected axially into the intermediate space (8) between the ring gear (5) and the hollow shaft (4), through at least one injection nozzle (77, 79) in the nozzle-side mould half (71). In order to provide a method that is less laborious and offers a broader range of application possibilities, it is proposed according to the invention that, when the injection mould (7) is closed, an axial opening (43) at the end face of the hollow shaft (4) is closed and sealed with respect to the intermediate space (8) by the nozzle-side mould half (71).
IPC 8 full level
B29C 45/14 (2006.01); B29C 45/17 (2006.01); F16H 55/06 (2006.01); B29L 15/00 (2006.01)
CPC (source: EP)
B29C 45/14491 (2013.01); B29C 45/14598 (2013.01); B29C 45/14614 (2013.01); B29C 45/1759 (2013.01); B29C 2045/14131 (2013.01); B29C 2045/14606 (2013.01); B29C 2045/14934 (2013.01); B29L 2015/00 (2013.01); B29L 2015/003 (2013.01); F16H 2055/065 (2013.01)
Citation (search report)
See references of WO 2021175750A1
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)
DE 102020202922 A1 20210909; CN 115243858 A 20221025; EP 4114636 A1 20230111; WO 2021175750 A1 20210910
DOCDB simple family (application)
DE 102020202922 A 20200306; CN 202180019331 A 20210301; EP 2021054959 W 20210301; EP 21709367 A 20210301