(19)

(11)

EP 3 646 354 A1

(12)

(43) Date of publication: 06.05.2020 Bulletin 2020/19 (21) Application number: 17915319.2 (22) Date of filing: 29.06.2017

(51) International Patent Classification (IPC):  H01C 3/20(2006.01) (86) International application number: PCT/CN2017/090733 (87) International publication number: WO 2019/000306 (03.01.2019 Gazette 2019/01)

(84) Designated Contracting States: 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 States: BA ME Designated Validation States: MA MD (71) Applicant: Lee, Shang-Yo Taipei City, Taiwan 106 (TW)	(72) Inventor: Lee, Shang-Yo Taipei City, Taiwan 106 (TW) (74) Representative: Casalonga  Casalonga & Partners Bayerstraße 71/73 80335 München 80335 München (DE)