Striking mechanism for timepiece, has obturator mechanisms moved between active position, in which mechanisms close cam notches, and rest position in which mechanisms are subjected to return action for being maintained in rest position

摘要

#CMT# #/CMT# The mechanism has minute, hour and quarter-hour racks cooperating with pallets to actuate hammers to initiate a striking operation. A block comprises quarter-hour cams (22, 23, 24) comprising obturator mechanisms i.e. flaps, pivoted on a hub of a driving wheel (21). The wheel is integrated to the quarter-hour cams. The mechanisms are moved between an active position, in which the mechanisms close notches of the quarter-hour cams, and a rest position in which the mechanisms are subjected to elastic return action for being maintained in the rest position. #CMT#USE : #/CMT# Striking mechanism for a timepiece. #CMT#ADVANTAGE : #/CMT# The mechanism is configured such that its malfunction is prevented in case of manual setting of the display of the timepiece. The striking mechanism has reduced encumbrance. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a perspective view of a cam-gear train assembly. 1 : Axle 2 : Pinion 20 : Hour wheel 21 : Driving wheel 22, 23, 24 : Quarter-hour cams.