Tuning-fork resonator for mechanical clock movement

A clock movement comprising a tuning-fork mechanical resonator with free escapement, the tuning-fork mechanical resonator comprising an oscillator of a tuning fork type, of which at least one first prong is intended to oscillate about a first axis and bears at least one first pin associated with at least one first fork tooth of a pallet assembly to cause this assembly to pivot between first and second angular positions and alternately lock and release an escapement wheel;

• and
• a conversion member secured to said first pin and designed to, on the one hand, convert the oscillations of said first prong of said oscillator into rotational movements of said pallet assembly by transmitting first impulses thereto, and, on the other hand, transmit mechanical energy from said pallet assembly to said first prong of said oscillator in the form of impulses,
• wherein said first tooth has an amplitude of axial movement, in substantially a direction of said first axis, as said pallet assembly pivots, that is greater than the amplitude of movement of said first pin substantially in the direction of said first axis.

A timepiece comprising a clock movement comprising a tuning-fork mechanical resonator with free escapement, the tuning-fork mechanical resonator comprising an oscillator of the tuning fork type, of which at least one first prong is intended to oscillate about a first axis and bears at least one first pin associated with at least one first fork tooth of a pallet assembly to cause this assembly to pivot between first and second angular positions and alternately lock and release an escapement wheel;

• and
• a conversion member secured to said first pin and designed to, on the one hand, convert the oscillations of said first prong of said oscillator into rotational movements of said pallet assembly by transmitting first impulses thereto, and, on the other hand, transmit mechanical energy from said pallet assembly to said first prong of said oscillator in the form of impulses,
• wherein said first tooth has an amplitude of axial movement, in substantially a direction of said first axis, as said pallet assembly pivots, that is greater than the amplitude of movement of said first pin substantially in the direction of said first axis.