Arrangement for mechanical interface of an MEMS micromotor with a clock wheel and time piece incorporating this arrangement

摘要

#CMT# #/CMT# The arrangement has a pinion (62) coaxial to and arranged above a rotor (42), and connected in rotation to the rotor by a pin (66) received in openings i.e. slots (68), where the rotor is driven by an actuator of a micro electro-mechanical system micromotor. The pinion is meshed with a toothed wheel (28), and the pin is integrated to the pinion. The pinion is supported on a bearing (60) when an axial effort oriented downwards is applied on the pinion. The rotor is guided in rotation by a shaft (64) mounted in the plate. #CMT#USE : #/CMT# Arrangement for mechanically interfacing a micro electro-mechanical system (MEMS) micromotor with a toothed wheel of a gear-train in a timepiece (claimed) i.e. wristwatch. #CMT#ADVANTAGE : #/CMT# The interfacing arrangement permits the micromotor and the gear-train to be independent at the level of their radial clearances, while permitting transmission of torque between the micromotor and the gear-train. The arrangement permits easy manipulation during interfacing of the micromotor with the gear train without being directly exposed to dust. The pinion permits mechanical interface of the gear train with the micromotor, hence providing increased modularity to the arrangement. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a top view illustrating driving of a pinion by a rotor using a pin. 28 : Toothed wheel 42 : Rotor 60 : Bearing 62 : Pinion 64 : Shaft 66 : Pin 68 : Slots.