MEMS micromotor and timepiece equipped with this micromotor
摘要
<p>The micromotor (36) has a cylindrical central shaft (64) e.g. plunging metallic axle, connected on a silicon on insulator type plate (30) which is made of crystalline or amorphous material e.g. silicon. The shaft is staged and extended across a hole (74) of the plate. The shaft is locked and centered in the hole using elastic fixation structures (96) which are formed by engraving in a substrate (32) and which are arranged on the circumference of the hole. The shaft has an external axial wall that is provided with a covering. The plate has an upper layer in which a rotor (42) is engraved.</p>
