Đồng hồ Richard Mille RM 72-01 Lifestyle In-House Chronograph

FLYBACK CHRONOGRAPH WITH OSCILLATING PINIONS (PATENTED MECHANISM)

This new type of flyback chronograph, patented by Richard Mille, splitting the torque generated across the chronograph’s various counters. The display and the connection to the minutes and hours are thus disengaged from the chronograph’s seconds wheel. The performance of this chronograph is superlative. Drawing power directly from the barrel to supply the chronograph’s three counters, the enhanced energy is transmitted to the chronograph train by a coupling system consisting of two oscillating pinions mounted on rockers, controlling the start, stop, flyback and reset functions.
The rockers are activated by a 6-column wheel whose construction optimises the simultaneity of actions and the proper latching of functions, whilst ensuring the longevity of the settings.

This invention constitutes a major advancement in the calculation of times. Less sensitive to disturbance and less voluminous than standard mechanisms, the disassociation of the chronograph function from daily time measurement means that the rate of the base movement is entirely unaffected when the chronograph is activated.

DATE DISPLAY

Semi-instantaneous, placed in a vertical aperture at 7 o’clock.

FUNCTION INDICATOR

In a manner similar to a car’s gearbox, the function indicator makes it possible to identify the winding, neutral and handsetting positions as the crown is pulled out.

This type of balance wheel represents the ultimate in innovation. It guarantees greater reliability when subjected to shocks and also during movement assembly and disassembly, hence better chronometric results over time.

The regulator index is eliminated and a more accurate and repeatable adjustment is possible, thanks to 4 small, adjustable weights located directly on the balance.

 

MOVEMENT CHARACTERISTICS

Movement dimensions: 29.10 x 31.25 mm
Thickness: 6.05 mm
Number of jewels: 39
Balance wheel: CuBe, 4 arms, 4 setting weights, moment of inertia 7.5 mg•cm² , angle of lift 50°
Frequency: 28,800 vph (4 Hz)
Balance spring: AK3
Shock protection: INCABLOC 908.22.211.100 (transparent)

CASE

The design and execution of the watch demonstrate a holistic approach to conception of the movement, case and dial. As a result, everything has been constructed according to extremely rigorous specifications. For example, a casing ring is no longer used, and the movement is mounted on chassis mounting rubbers (ISO SW) fixed by titanium screws. This shows the emphasis placed on uncompromising high quality.

The tripartite case is water resistant to 30 metres, ensured by three Nitrile O-ring seals. It is assembled using 20 grade 5 titanium spline screws and abrasion-resistant washers in 316L stainless steel.

 

 

The push buttons have standardised resistance, meaning they always require exactly the same pressure to activate. This trigger pressure has been carefully determined down to the nearest gram, for a precise and gentle release.
The push buttons are coupled with a double-ratchet levers which balances the pressure and creates an audible click.