EP 3001519 B1 20190501 - METHOD FOR MANUFACTURING SPARK PLUG FOR INTERNAL COMBUSTION ENGINE
Title (en)
METHOD FOR MANUFACTURING SPARK PLUG FOR INTERNAL COMBUSTION ENGINE
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER ZÜNDKERZE FÜR EINEN VERBRENNUNGSMOTOR
Title (fr)
PROCÉDÉ DE PRODUCTION DE BOUGIE D'ALLUMAGE POUR MOTEUR À COMBUSTION INTERNE
Publication
Application
Priority
- JP 2013106942 A 20130521
- JP 2014063507 W 20140521
Abstract (en)
[origin: EP3001519A1] A method of manufacturing a spark plug 1 in which at least one of a center electrode 2 and a ground electrode 3 includes a discharge chip 5. In a chip making step, the discharge chip 5 is made by joining a discharge part 51 arranged on a spark discharge gap 11 side and a base member-joining part 52 that is made of a material having a lower melting point than the discharge part 51 and to be joined to an electrode base member 30. In a temporary joining step, the discharge chip 5 is temporarily joined, at the base member-joining part 52, to the electrode base member 30 by resistance welding. In a main joining step, the discharge chip 5 is joined, by laser welding, to the electrode base member 30 so that a side surface 511 of the discharge part 51 and a surface 31 of the electrode base member 30 are smoothly connected by a connecting surface 523 that has no sharp edge.
IPC 8 full level
H01T 21/02 (2006.01)
CPC (source: EP)
H01T 13/39 (2013.01); H01T 21/02 (2013.01)
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
DOCDB simple family (publication)
EP 3001519 A1 20160330; EP 3001519 A4 20170125; EP 3001519 A8 20160810; EP 3001519 B1 20190501; CN 105247747 A 20160113; CN 105247747 B 20170829; JP 2014229429 A 20141208; JP 6043681 B2 20161214; WO 2014189088 A1 20141127
DOCDB simple family (application)
EP 14801406 A 20140521; CN 201480028953 A 20140521; JP 2013106942 A 20130521; JP 2014063507 W 20140521