EP 3542226 B1 20210106 - CLUTCH SYSTEM FOR CHRONOGRAPH
Title (en)
CLUTCH SYSTEM FOR CHRONOGRAPH
Title (de)
KUPPLUNGSSYSTEM FÜR CHRONOGRAPH
Title (fr)
SYSTEME D'EMBRAYAGE POUR CHRONOGRAPHE
Publication
Application
Priority
- EP 16199425 A 20161117
- EP 2017079223 W 20171114
Abstract (en)
[origin: WO2018091476A1] A coupling system (1) for a chronograph mechanism, comprising: an input wheel (3) intended to be driven by a motor unit; an output wheel (5) intended to drive at least one display member; and intermediate wheel (9), in permanent kinematic connection with a first wheel (3, 5) selected between the input wheel (3) and the output wheel (5), said intermediate wheel (9) being mounted such that it can move between a coupled state in which the input wheel (3) is in kinematic connection with the output wheel (5), and an uncoupled state in which the kinematic connection is broken. According to the invention, the system (1) also comprises: a first friction disc (17), rotationally secured with the intermediate wheel (9), and a second friction disc (19) rotationally secured with a second wheel (5, 3) selected between the input wheel (3) and the output wheel (5), the friction discs (17, 19) being at least partially coplanar and arranged to transmit rotation between the intermediate wheel (9) and the second wheel (5, 3), or vice versa, when the system (1) is in a coupled state; a first security disc (37) rotationally secured with the intermediate wheel (9) and comprising a first security toothing, and a second security disc (39) rotationally secured with the second wheel (5,3) and comprising a second security toothing, the two sets of security toothing being shaped in such a way that they mutually mesh when the intermediate wheel (9) is in a coupled state.
IPC 8 full level
G04F 7/08 (2006.01)
CPC (source: EP US)
G04F 7/0828 (2013.01 - EP US); G04F 7/0804 (2013.01 - US)
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 3324249 A1 20180523; CN 110073295 A 20190730; EP 3542226 A1 20190925; EP 3542226 B1 20210106; JP 2019536036 A 20191212; JP 7042822 B2 20220328; US 11226595 B2 20220118; US 2019271952 A1 20190905; WO 2018091476 A1 20180524
DOCDB simple family (application)
EP 16199425 A 20161117; CN 201780075731 A 20171114; EP 17804126 A 20171114; EP 2017079223 W 20171114; JP 2019527165 A 20171114; US 201716461017 A 20171114