MECHANISM FOR DRIVING AN INDICATOR FOR A TIMEPIECE

摘要

The invention relates to a mechanism for driving an indicator for a timepiece, including: a mobile (22, 23) for driving the indicator, a first lever (16) mounted about a first pivot (17) and including a nose (20, 21) which is to engage with a tooth of the mobile (22, 23) so as to move said mobile, a first cam (2) arranged so as to rotate the first lever (16) about the first pivot (17), a second lever (11) which is mounted about a second pivot (12) and to which the first pivot (17) is rigidly connected, a second cam (3) arranged so as to rotate the second lever (11) about the second pivot (12), and a resilient means (10, 13) for maintaining the engagement between the levers (16, 11) and the cams (2, 3), the levers (16, 11) and the cams (2, 3) being arranged such that the nose (20, 21) of the first lever (16) cyclically describes a closed curve, each cycle including a first motion during which the nose (20, 21) exits the tooth of the mobile (22, 23) without modifying the angular position of said mobile, and a second motion during which the nose (20, 21) enters the tooth of the mobile (22, 23) in order to move said mobile.