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Pulse control unit for releasing or arresting chronometer function of watch, has push button and ring with zones whose ramp cooperates with ramp of push button to carry out blocking course of ring for single movement without retrieval
Pulse control unit for releasing or arresting chronometer function of watch, has push button and ring with zones whose ramp cooperates with ramp of push button to carry out blocking course of ring for single movement without retrieval
The unit (1) has a manual activation push button (5) for forming an element movable in translation in a connection tube (4). The button and a blocking ring (7) have complementary zones constituted of a helical ramp (8) cooperating with a complementary helical ramp (8') of the push button. The cooperation of the ramp (8') permits a user to carry out blocking course of the ring by manual rotation of the ring along a turn for a single movement without retrieval. An elastomer o-ring joint (9) forming a brake is placed between an internal wall of the ring and an external wall of the tube.
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