Clock movement provided with a drive mechanism for an analogue indicator with periodic or intermittent movement

摘要

The watch movement (24) is equipped with an analogue display device for information whose value varies periodically or intermittently, this analog display device comprising on the one hand an indicator (26) provided with a first toothing (28) and, on the other hand, a periodic or intermittent drive mechanism (30) for this indicator. The drive mechanism is formed by an irreversible transmission system which has an anti-shock function for the indicator. The display device further comprises a jumper (56) for positioning this indicator which generates a positioning force on the first toothing, which is sufficient to accurately position this indicator in a plurality of discrete display positions but largely insufficient for provide a shockproof function for the indicator. Thus, the indicator can be driven with a relatively low torque; which therefore requires less energy and allows to provide a drive mechanism with a lower reduction in the transmission of the engine torque.