OSCILLATOR FOR A CLOCK MOVEMENT

摘要

An oscillator (10) comprising a spiral spring (11) made from a paramagnetic or diamagnetic material and an assembled balance wheel (12) comprising a shaft (13) on which the following elements are fitted: a balance wheel (14), a plate (15) and a collet (16) rigidly connected with said spiral spring (11), characterised in that the maximum diameter (Dmax) of the shaft is less than 3.5, or even 2.5, or even 2 times the minimum diameter (D1) of the shaft on which one of the elements is fitted or in that the maximum diameter (Dmax) of the shaft is less than 1.6, or even 1.3 times the maximum diameter (D2) of the shaft on which one of the elements is fitted.

主权项

1. An oscillator comprising a balance spring made of a paramagnetic or diamagnetic material and
an assembled balance comprising a shaft on which the following elements are mounted: a balance, a roller and a collet secured to said balance spring, wherein the maximum diameter of the shaft is at least one of (i) less than 3.5 the minimum diameter of the shaft on which one of the elements is mounted and (ii) less than 1.6 the maximum diameter of the shaft on which one of the elements is mounted.