Csem Centre Suisse D'electronique Et De Microtechnique Sa&#x2014;recherche Et D&#xe9;veloppement

Csem Centre Suisse D'electronique Et De Microtechnique Sa

Florent Cosandier

Lionel Kiener

François Barrot

Grégory Musy

Fabien Droz-dit-Busset

Gregory Musy

Philippe Schwab

Emmanuel Dominé

Johan Kruis

Hervé Saudan

Disclosed is a device including a compliant mechanism including: a first monolithic flexible element, having first and second ends defining a first longitudinal direction, arranged such that it is able to be subjected to an elastic deformation involving a relative movement between its first and second ends; and at least a second monolithic flexible element, having first and second ends defining a second longitudinal direction distinct from the first longitudinal direction, arranged such that it is able to be subjected to an elastic deformation involving a relative movement between its first and second ends. At least one of the first and second monolithic flexible elements includes at least one opening located between its first and second ends and defining a passage for a portion of the other monolithic flexible element such that the first and second monolithic flexible elements are interlocked.

Device comprising interlocked monolithic flexible elements and corresponding additive manufacturing method

A pivot mechanism for guiding in rotation comprises a mobile element connected to a fixed element through flexible connections; with the flexible elements being configured to guide the mobile element according to a rotational movement in a plane, around a pivoting axis perpendicular to the plane; with each of the flexible connections comprising an intermediary junction provided with an expansion slot, the expansion slot being configured to expand during the rotation of the mobile element, so that the mobile element can pivot according to a second angular amplitude that is greater than a first angular amplitude achieved without said expansion slot; with the intermediary junctions being connected to one another by a coupling member; each of the coupling members being configured so as to prevent a movement out of the plane and a lateral movement in the plane of the mobile element. The pivot mechanism has a very high rotational amplitude.

Pivot mechanism with flexible elements for large-amplitude rotation guiding and pivot assembly comprising a plurality of said pivot mechanism

A sprung balance type mechanical timekeeper, includes a spiral spring (), a balance () and an escapement mechanism () connected by a point of attachment () to the spiral spring and arranged to sustain an oscillation of the balance. The escapement mechanism () is connected to the point of attachment () of the spiral spring by a chassis () pivoted about the axis (A) of the balance. An outer end () of the spiral spring () is attached to this transverse pert () at a location located on one side of the balance axis (A). The chassis () includes two branches extending on either side of the axis of the balance () and forming a rotary plate whose axis of rotation is coincident with the axis of oscillation of the balance (). The escapement mechanism () is located on the other side of the balance axis (A) and acts on the pivoted chassis () so as to free its rotation and thus make the attached end () of the spiral spring rotate.

Timepiece with a mechanical oscillator

Mechanical oscillator for a horological movement, comprising: a central fixed part being configured to be fixed to a frame of the horological movement; an inertial rim coaxial with a pivoting axis of the mechanical oscillator; at least two rigid links extending radially between the central fixed part and the inertial rim and supporting the inertial rim; and at least two flexible links extending radially from the central fixed part; each flexible link comprising a first flexible element and a second flexible element substantially coplanar to the first element, the first flexible element and the second flexible element being rigidly connected at their distal extremity; the proximal extremity of the first flexible element being fixed to the fixed part and the proximal extremity of the second flexible element being fixed to one of said at least two rigid links, such that the inertial rim can oscillate around the pivoting axis.

Mechanical oscillator for a horological movement

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Colombier, Switzerland

Florent Cosandier