A tourbillon (1) with a rotation cage which is rotatably arranged about a tourbillon axis is provided. The rotation cage mounts a balance wheel (3) and an escapement with an escape wheel (8) and a lever. The tourbillon is characterised in that the rotation cage comprises a bearing wheel (22) which is mounted by bearing elements (13) which engage peripherally on a running surface (11) of the bearing wheel (22).

The invention relates to an oscillator comprising a pivoting staff connected to a mechanical energy source, an inertia-elasticity resonator formed in one piece, which is mounted on the pivoting staff, a detent escapement comprising a single-piece detent fixed to the pivoting staff, which comprises at least one flexible blade and a stop member arranged to elastically lock the pivoting staff in relation to a concentric escapement toothing, wherein the release element is arranged to elastically unlock the stop member in relation to the concentric escapement toothing, by the movement of the member forming the inertia, so that the pivoting staff counts each oscillation of the resonator while transmitting to it the energy able to maintain it.

A clockwork movement with a tourbillon unit, including a base plate, a mobile cage mounted rotatably on the base plate and connected to a second pinion, a balance mounted on the mobile cage and an escape wheel mounted on the mobile cage and being in operative connection with the balance, a balance wheel stop mechanism being capable to be brought into engagement with the balance, wherein it further includes a setting mechanism controlled by an external actuating device for any angular orientation of the mobile cage.

Disclosed is a tourbillon for a horology movement including a cage rotatably mounted on the horology movement, the cage bearing a regulating organ including a balance including a balance pivot pivotally mounted in balance bearings about a balance axis with an anchor including an anchor pivot pivotally mounted in anchor bearings about an anchor axis and arranged to cooperate both with the regulating organ and also with an escapement wheel including an escapement pivot pivotally mounted in escapement bearings about an escapement axis. The anchor and the escapement wheel are positioned relative to the balance so the distance between the anchor axis and the balance axis and the distance between the escapement axis and the balance axis are greater than the outer radius of the balance. Also disclosed is a movement including such a tourbillon as well as to a timepiece including such a movement.

A timepiece part, includes a frame having a power source, a housing including a first pivotal movement system and a second pivotal movement system; an escapement set up on a mounting, a first kinematic linkage including a first wheel borne by a first half-shaft from the first pivotal movement system and a second wheel borne by a first half-shaft from the second pivotal movement system, and a second kinematic linkage including a first wheel borne by the second half-shaft from the first pivotal movement system and a second wheel borne by the first or second half-shaft of the second pivotal movement system. One of the wheels borne by the second pivotal movement system is kinematically linked to the power source, and the other wheel borne by the pivotal movement system is stationary relative to the frame. Both wheels borne by the first system are kinematically linked to a differential.

Disclosed in the present application is a horologe, a timekeeping system thereof including: a winding mechanism powering the second hand, minute hand and hour hand; a mechanical transmission wheel train engaged with the winding mechanism and driving the second hand, minute hand and hour hand to operate, wherein the mechanical transmission wheel train comprises a tourbillion mechanism driving a second wheel connected with the second hand to rotate; an accuracy control device, wherein the timekeeping motor of the accuracy control device drives the rotation of the rotor and the timekeeping accuracy of the timekeeping motor is controlled by a quartz crystal oscillator; and an electronic transmission wheel train connected to the rotor. The horologe disclosed in the present application can solve the problem that the timekeeping accuracy of the mechanical horologe is poor.

The invention relates to an oscillator comprising a pivoting staff connected to a mechanical energy source, an inertia-elasticity resonator formed in one piece, which is mounted on the pivoting staff, a detent escapement comprising a single-piece detent fixed to the pivoting staff, which comprises at least one flexible blade and a stop member arranged to elastically lock the pivoting staff in relation to a concentric escapement toothing, wherein the release element is arranged to elastically unlock the stop member in relation to the concentric escapement toothing, by the movement of the member forming the inertia, so that the pivoting staff counts each oscillation of the resonator while transmitting to it the energy able to maintain it.

A tourbillon mechanism for a timepiece movement includes a balance mechanism, an escapement mechanism and a carriage mounted in a structure of the timepiece movement in rotation about a tourbillon axis. The balance mechanism includes a spring and a balance wheel mounted in the carriage to pivot about the tourbillon axis. The escapement mechanism includes an escape wheel with teeth and a pallet-lever including pallet-stones configured to engage the teeth, the pallet-lever being mounted in the carriage and coupled in rotation to the carriage by a pivot device. The escape wheel encircles the tourbillon axis and is attached to or integral with the structure of the timepiece movement.

A clockwork movement with a tourbillon unit, including a base plate, a mobile cage mounted rotatably on the base plate and connected to a second pinion, a balance mounted on the mobile cage and an escape wheel mounted on the mobile cage and being in operative connection with the balance, a balance wheel stop mechanism being capable to be brought into engagement with the balance, wherein it further includes a setting mechanism controlled by an external actuating device for any angular orientation of the mobile cage.

A timepiece with a tourbillon unit, including a base plate, cage placed rotatably on the base plate and being connected to a fourth pinion, a balance placed on the cage, and an escape wheel that is placed on the cage and that is in work connection with the balance, a balance stop device being capable to be brought into engagement with the balance, wherein it further includes a zero-setting device for the angular orientation of the cage.