Oscillating mechanism with an elastic pivot and mobile element for transmitting energy

An escapement-oscillator block configured to regulate the timekeeping of a timepiece, the escapement-oscillator block comprising:

• an escapement mechanism;
• and
• a mechanical rotary oscillator,
• said escapement mechanism including
• a set of pallets, or of Swiss pallets, or of detent pallets, and
• an elastic pivot,
• said elastic pivot including
• a first rigid element and a second rigid element, the second rigid element being integral with a pallet staff of the set of pallets, or of Swiss pallets, or of detent pallets, the second rigid element being mobile relative to the first rigid element;
• a first elastic restoring means which produces a direct or indirect elastic connection between said first rigid element and an intermediate rigid element;
• at least a second elastic restoring means which produces a direct or indirect elastic connection between said intermediate rigid element and said second rigid element,
• wherein said first rigid element, said first elastic restoring means, said intermediate rigid element, said second elastic restoring means, and said second rigid element are coplanar according to one plane and are configured to be deformed according to said plane,
• wherein said elastic pivot assumes a configuration of butterfly type, comprising said intermediate rigid element, formed by at least one rigid arm which extends between said first rigid element disposed in a vicinity of said pivot axis and said second rigid element forming a peripheral part, to which said first rigid element is connected respectively by said first elastic restoring means formed by at least one first elastic blade, and by said second elastic restoring means formed by at least one second elastic blade, said at least one rigid arm forming an intermediate mass which is mobile by pivoting about said pivot axis,
• said first elastic restoring means comprises a plurality of first elastic blades which extend radially relative to said pivot axis or respectively form dihedrons with a V extending radially relative to said pivot axis, the point of said V being directed towards said pivot axis, and
• said second elastic restoring means comprises a plurality of second elastic blades which extend radially relative to said pivot axis or respectively form dihedrons with a V extending radially relative to said pivot axis, the point of said V being directed towards said pivot axis, and
• said mechanical rotary oscillator including
• a balance plate having an impulse pin to cooperate with the set of pallets of the escapement mechanism,
• at least one anchorage configured to be fixed on an element of a timepiece movement such that the balance plate is mobile relative to the anchorage and pivots about a theoretical pivot axis,
• the mechanical rotary oscillator being flexible with a variable geometry whilst being produced in a monobloc manner,
• a first elastic restoring means which produces a direct or indirect elastic connection between said first rigid element and a balance rim,
• at least a second elastic restoring means which produces a direct or indirect elastic connection between said balance rim and said anchorage,
• wherein said balance plate, said first elastic restoring means, said balance rim, said second elastic restoring means, and said anchorage are coplanar according to one plane and are configured to be deformed according to said plane,
• wherein the mechanical rotary oscillator assumes a configuration of butterfly type, comprising said balance rim, formed by at least one rigid arm which extends between said balance plate disposed in a vicinity of said pivot axis and said balance rim forming a peripheral part, to which said balance plate is connected respectively by said first elastic restoring means formed by at least one first elastic blade, and by said second elastic restoring means formed by at least one second elastic blade, said at least one rigid arm forming an intermediate mass which is mobile by pivoting about said pivot axis,
• said first elastic restoring means comprises a plurality of first elastic blades which extend radially relative to said pivot axis or respectively form dihedrons with a V extending radially relative to said pivot axis, the point of said V being directed towards said pivot axis, and
• said second elastic restoring means comprises a plurality of second elastic blades which extend radially relative to said pivot axis or respectively form dihedrons with a V extending radially relative to said pivot axis, the point of said V being directed towards said pivot axis.

An assembly comprising:

• an escapement-oscillator block;
• and
• a boring for centering an escapement wheel configured to provide energy necessary for maintaining the oscillation;
• said escapement-oscillator block including
• an escapement mechanism, and
• a mechanical rotary oscillator,
• said escapement mechanism including
• a set of pallets, or of Swiss pallets, or of detent pallets, and
• an elastic pivot,
• said elastic pivot including
• a first rigid element and a second rigid element, the second rigid element being integral with a pallet staff of the set of pallets, or of Swiss pallets, or of detent pallets, the second rigid element being mobile relative to the first rigid element;
• a first elastic restoring means which produces a direct or indirect elastic connection between said first rigid element and an intermediate rigid element;
• at least a second elastic restoring means which produces a direct or indirect elastic connection between said intermediate rigid element and said second rigid element,
• wherein said first rigid element, said first elastic restoring means, said intermediate rigid element, said second elastic restoring means, and said second rigid element are coplanar according to one plane and are configured to be deformed according to said plane,
• wherein said elastic pivot assumes a configuration of butterfly type, comprising said intermediate rigid element, formed by at least one rigid arm which extends between said first rigid element disposed in a vicinity of said pivot axis and said second rigid element forming a peripheral part, to which said first rigid element is connected respectively by said first elastic restoring means formed by at least one first elastic blade, and by said second elastic restoring means formed by at least one second elastic blade, said at least one rigid arm forming an intermediate mass which is mobile by pivoting about said pivot axis,
• said first elastic restoring means comprises a plurality of first elastic blades which respectively form dihedrons with a V extending radially relative to said pivot axis, the point of said V being directed towards said pivot axis, and
• said second elastic restoring means comprises a plurality of second elastic blades which respectively form dihedrons with a V extending radially relative to said pivot axis, the point of said V being directed towards said pivot axis, and
• said mechanical rotary oscillator including
• a balance plate having an impulse pin to cooperate with the set of pallets of the escapement mechanism,
• at least one anchorage configured to be fixed on an element of a timepiece movement such that the balance plate is mobile relative to the anchorage and pivots about a theoretical pivot axis,
• the mechanical rotary oscillator being flexible with a variable geometry whilst being produced in a monobloc manner,
• a first elastic restoring means which produces a direct or indirect elastic connection between said first rigid element and a balance rim,
• at least a second elastic restoring means which produces a direct or indirect elastic connection between said balance rim and said anchorage,
• wherein said balance plate, said first elastic restoring means, said balance rim, said second elastic restoring means, and said anchorage are coplanar according to one plane and are configured to be deformed according to said plane,
• wherein the mechanical rotary oscillator assumes a configuration of butterfly type, comprising said balance rim, formed by at least one rigid arm which extends between said balance plate disposed in a vicinity of said pivot axis and said balance rim forming a peripheral part, to which said balance plate is connected respectively by said first elastic restoring means formed by at least one first elastic blade, and by said second elastic restoring means formed by at least one second elastic blade, said at least one rigid arm forming an intermediate mass which is mobile by pivoting about said pivot axis,
• said first elastic restoring means comprises a plurality of first elastic blades which extend radially relative to said pivot axis or respectively form dihedrons with a V extending radially relative to said pivot axis, the point of said V being directed towards said pivot axis, and
• said second elastic restoring means comprises a plurality of second elastic blades which extend radially relative to said pivot axis or respectively form dihedrons with a V extending radially relative to said pivot axis, the point of said V being directed towards said pivot axis,
• wherein the assembly is produced in two parts of an SOI wafer,
• in a device layer of the SOI wafer for said escapement-oscillator block including said set of pallets and elastic pivot and said mechanical rotary oscillator, and
• in a handle layer of the SOI wafer for anchoring said set of pallets and said mechanical rotary oscillator and for said centering boring of an escapement wheel.

An oscillating mechanism for a timepiece movement, comprising:

• a first rigid element to be fixed on a first timepiece movement element;
• a second rigid element to be fixed on a second timepiece movement element different from the first timepiece movement element, at least one of the first and second rigid elements being mobile relative to the other and pivoting about a theoretical pivot axis, the first rigid element being disposed in a vicinity of the theoretical pivot axis and the second rigid element being disposed in a periphery of the oscillating mechanism, away from the theoretical pivot axis;
• an intermediate rigid element disposed between the first rigid element and the second rigid element;
• a first elastic restoring means that connects the first rigid element to the intermediate rigid element, the first elastic restoring means including a plurality of first elastic blades which respectively form dihedrons with a V extending radially relative to said pivot axis, the point of said V being directed towards said pivot axis;
• and
• a second elastic restoring means that connects the second rigid element to the intermediate rigid element, the second elastic restoring means including a plurality of second elastic blades which respectively form dihedrons with a V extending radially relative to said pivot axis, the point of said V being directed towards said pivot axis, wherein
• the first rigid element, the first elastic restoring means, the intermediate rigid element, the second elastic restoring means, and the second rigid element are formed as a monobloc to be coplanar such that the first elastic restoring means and the second elastic restoring means are elastically deformable in a single plane and the intermediate rigid element and the second rigid element are pivotable in the plane about the theoretical pivot axis by elastic deformations of the first and second elastic restoring means.