Abstract:
The invention relates to a pivot arbor (1) for a timepiece movement comprising at least one pivot (3) made of a first non-magnetic metal material (4) at at least one of the ends thereof in order to limit the sensitivity thereof to magnetic fields, at least the outer surface of said pivot (3) being coated with a first layer (5) of a second material selected from the group comprising Ni, NiB and NiP, and preferably chemical NiP. At least the first layer (5) of second material is at least partially coated with a second layer (6) of a third material selected from the group comprising gold, silver, copper, platinum, rhodium, palladium and their alloys.The invention concerns the field of timepiece movements.
Abstract:
The invention relates to a timepiece assortment including a timepiece component fixed to an arbor with the aid of a fixing element. According to the invention, the fixing element is made of at least partially amorphous metal alloy, is secured to the timepiece component by partial insertion and includes a hole into which the arbor is driven.
Abstract:
An assembly system includes a member made of a first material including a staff and a shoulder, the staff of the member being received in an aperture of a part made of a second material having little or no plastic domain. The assembly system includes a locking element made of a third material arranged to elastically attach the part between the shoulder of the member and the locking element, and the locking element is a conical washer including an internal wall which radially grips the staff of the member. A peripheral portion of the locking element exerts an elastic radial force vertical to the shoulder of the member in order to secure assembly of the member, the part, and the locking element.
Abstract:
The invention relates to a method of fabricating a composite micromechanical component, particularly for timepiece movements, including steps: a) providing a substrate including a horizontal top layer and a horizontal bottom layer made of electrically conductive, micromachinable material, and secured to each other by an electrically insulating, horizontal, intermediate layer; b) etching a pattern in the top layer through to the intermediate layer, thereby forming at least one cavity in the substrate; c) coating the top part of the substrate with an electrically insulating coating; d) directionally etching the coating and the intermediate layer to limit the presence thereof exclusively at each vertical wall; e) performing an electrodeposition by connecting the electrode to the conductive bottom layer of the substrate to form at least one metal part of the component; g) releasing the composite component from the substrate.
Abstract:
The invention relates to a system of assembling a member, made of a first material, in the aperture of a part made of a second material having no usable plastic domain, using an intermediate portion (7, 27, 47, 67, 87) made of a third material, mounted between said member and said part. According to the invention, the part is accommodated against a first level (6) of the intermediate portion and is resiliently locked on a second level of the intermediate portion by the member in order to secure together the unit comprising the member—intermediate portion—part.The invention concerns the field of timepieces.
Abstract:
An assembly of a member, made of a first material in an aperture of a part, made of a second material having no plastic domain, using an intermediate part made of a third material, mounted between the member and the part. The intermediate part includes a hole for receiving the member. The part includes pierced holes forming a deformation mechanism distributed around the aperture thereof. The elastically and plastically deformed intermediate part radially grips the member and stresses the elastic deformation mechanism of the part so as to secure the assembly in a manner that is not destructive for the part. Such an assembly can for example be used in the field of timepieces.
Abstract:
The invention relates to a method (1) of manufacturing a silicon-metal composite micromechanical component (51) combining DRIE and LIGA processes. The invention also relates to a micromechanical component (51) including a layer wherein one part (53) is made of silicon and another part (41) of metal so as to form a composite micromechanical component (51). The invention concerns the field of timepiece movements.
Abstract:
The invention pertains to the field of high frequency watch movements. The invention relates to a timepiece including a movement that has a resonator of the type with a balance and balance spring and an escape system of the type with a wheel and Swiss lever. According to the invention, the balance oscillates at more than 36,000 vibrations per hour and the escape system is at least partially pierced to decrease the inertia thereof.
Abstract:
The micro-mechanical part, for example a horological movement part, includes a silicon core (1) all or part of the surface (3) of which is coated with a thick amorphous material (2). This material is preferably silicon dioxide and has a thickness which is five times greater than the thickness of native silicon dioxide.
Abstract:
The invention relates to a method (19, 19′, 39, 39′, 59, 59′) of assembling a part (5, 5′, 25, 25′, 45, 45′) in the aperture (18, 18′, 38, 38′, 58, 58′) of a component (3, 3′, 23, 23′, 43, 43′). According to the invention, the assembly system (19, 19′, 39, 39′, 59, 59′) includes a system (1, 1′, 21, 21′, 41, 41′) of securing the component (3, 3′, 23, 23′, 43, 43′) and the part (5, 5′, 25, 25′, 45, 45′) to each other, which includes at least one pawl device (11, 11′, 31, 31′, 51, 51′) intended to make the component (3, 3′, 23, 23′, 43, 43′) and the part (5, 5′, 25, 25′, 45, 45′) move integrally with each other. The invention concerns the field of timepieces.