A control system for a rotating element of a timepiece including a control element for actuating the rotating element and a transmission device between the control element and the rotating element. In the control system a gearing device includes a hybrid gearing device including a first element, which is movable around a first rotation axis and including a drive runner made from elastomeric material, and a second element, which is movable around a second rotation axis and including a rolling tooth system. The drive runner cooperates with the rolling tooth system by friction.

A chronograph module (1) including a plate, a primary shaft (3), and a primary disk (4) extending on an orthogonal plane to a longitudinal axis of the shaft. The primary shaft is fitted on the plate, such that the primary disk is engaged with a geartrain of the chronograph module. A removable wheel (2) is fitted on the primary shaft (3), and includes a peripheral gear structure and first (22) and second elastic arms (23) forming a clamp (30) to grip the primary shaft. A radial support surface (25) supports the elastic arms to assemble the removable wheel on the primary shaft. The arrangement and dimensions of the removable wheel produces an overlap of the removable wheel and an overlapping part of the module, such that the assembly of the overlapping part required the absence of the removable wheel whereas the primary shaft is fitted on the chronograph module.

A pivoting assembly includes an arbor rotatably mounted between two bearings, a member mounted between a shoulder of the arbor and a resilient washer, at least one of the two bearings including a limit stop which is arranged to enter into direct contact with the resilient washer in order to restrict the relative movement between the arbor and its bearings.

The invention relates to a composite component comprising an element with an opening into which extend stressed resilient means confined within a volume of an at least partially amorphous metal alloy, said composite component comprising a passage that, is centered with respect to said stressed resilient means.

To provide a mechanical component, a mechanical component manufacturing method, a movement, and a timepiece allowing the forcing-in portion to be firmly fixed to the shaft member, providing a sufficient buffer effect, and capable of precisely determining the outer diameter dimension. Provided is a mechanical component rotating around a shaft member. This mechanical component includes: a component main body having a through-hole through which the shaft member is passed; and a forcing-in portion formed on the inner surface of the through-hole and fixed to the shaft member through the forcing-in of the shaft member. The component main body has a retaining recess constituting an anchor structure regulating displacement of the forcing-in portion with respect to the component main body. The forcing-in portion is formed of a metal material.

To provide a mechanical component, a mechanical component manufacturing method, a movement, and a timepiece allowing the forcing-in portion to be firmly fixed to the shaft member, providing a sufficient buffer effect, and capable of precisely determining the outer diameter dimension. Provided is a mechanical component rotating around a shaft member. This mechanical component includes: a component main body having a through-hole through which the shaft member is passed; and a forcing-in portion formed on the inner surface of the through-hole and fixed to the shaft member through the forcing-in of the shaft member. The component main body has a retaining recess constituting an anchor structure regulating displacement of the forcing-in portion with respect to the component main body. The forcing-in portion is formed of a metal material.

A mechanical component includes a component main body having a through-hole through which a shaft member is passed, and a forcing-in portion made of metal material formed on the inner surface of the through-hole and fixed to the shaft member through the forcing-in of the shaft member. The component main body has a retaining recess and the forcing-in portion fills the inner space of the retaining recess so that the retaining recess constitutes an anchor structure regulating displacement of the forcing-in portion with respect to the component main body.

A timepiece wheel set, including an arbor including a housing for reception of a plate and including, on either side of the housing, an axial abutment surface maintained in abutment on the plate, which includes a radially resilient arm and a second arm forming together a clamp clamping a radial bearing surface of the arbor in proximity to the axial abutment surface. The arbor further includes an entry ramp arranged to push back radially the first resilient arm and the second resilient arm, to allow the plate to be placed on the arbor.

The invention relates to a composite component comprising an element with an opening into which extend stressed resilient means confined within a volume of an at least partially amorphous metal alloy, said composite component comprising a passage that, is centred with respect to said stressed resilient means.

A mechanical component configured to rotate with a shaft member includes a component main body having a through-hole through which the shaft member is passed, and one or more shaft support portions formed on the inner surface of the through-hole to fix the shaft member to the component main body. The one or more shaft support portions protrude from the inner surface of the through-hole and are capable of retaining the shaft member due to an elastic force. The one or more shaft support portions are made of material having a larger elongation percentage than that of the material of the component main body thereby preventing breakage of the mechanical component due to stress created when the shaft member is forced through the through-hole in the component main body.