Free escapement mechanism for timepiece movement, movement and/or timepiece comprising said escapement mechanism

摘要

The mechanism has a pulse mobile unit (2) pivoted on a frame of a clockwork movement and comprising a fork (2.3) engaged with a pulse pin (7.7) of a plate (7). An elastic arm (2.5) is terminated by a hook (2.6) engaged with teeth of an escape wheel (1.2). A control unit formed of detents (5, 6), a release nose (7.6) and a release pin (7.10) is arranged to release the escape wheel from a step during first alternation of a balance spring (3) in a rotation direction and releasing the hook from teeth of an escape wheel during second alternation of the balance spring in second rotation direction. An independent claim is also included for a detent for an escape mechanism of clockwork movement.