摘要:
The acoustic radiating membrane (1) is for assembly in a music box or a striking watch. The membrane is made with at least one area of asymmetrical shape, formed in the material of the membrane or with at least one area of asymmetrical shape having a different thickness from the general thickness of the membrane. It preferably includes two asymmetrical areas of elliptical shape (2, 3) which are partly superposed and have a different thickness from each other. The two ellipses (2, 3), preferably hollowed out of the membrane, are off-centre in relation to each other.
摘要:
The invention concerns a method of marking an article using a laser emitting radiation of wavelength λ, the article being formed of a material that is slightly absorbent at said wavelength λ, characterized in that it includes the following main steps: taking a support formed of a metal that is highly absorbent at wavelength λ and capable of converting at least in part the light energy absorbed into thermal energy, arranging the article directly against the support so as to form a sufficient thermal contact between the article and the support to transfer the thermal energy from the support to the article, the article being inserted between the laser and the support, locally illuminating said support through said article in conditions able to generate, at the surface of the support, sufficient thermal energy for the thermal energy transfer from the support to the article to produce on the surface of the article a local physical or chemical transformation resulting in a contrast at the origin of the marking.
摘要:
The gong for the striking work or alarm of a watch is configured to produce a sound within the audible frequency range when it is struck by at least one hammer. This gong is made of a material, wherein the square root of the ratio of the elasticity module of the material divided by the volumic mass of the selected material is less than 3300 m/s, so as to allow the gong to produce a rich sound, comprising a large number of partials, within the audible frequency range. The selected material may be, for example, a material having an amorphous structure, such as a metallic glass.
摘要:
The invention concerns a fastening band (1) of the belt type or a wristband or bracelet for a portable device (40) for example, including fastening and length adjustment means (5). The fastening band includes an element (6, 42) for indicating the fastening tension thereof that has a specific visual appearance identifiable to the user in order to indicate to the latter when the fastening tension of the band is sufficient for a given application. The fastening band of the present invention is particularly interesting when it is implemented in the form of a wristband for a pulsometer worn on the wrist comprising optical type measuring means. In this application, a fastening tension value sufficient to guarantee proper measurement precision is predefined, the features of the indicator element being adapted to this value in order to indicate to the wearer that he has reached said value when the wristband is being fitted to his wrist.
摘要:
A method of fabricating a reinforced silicon micromechanical part includes: micro-machining the part, or a batch of parts in a silicon wafer; forming a silicon dioxide layer over the entire surface of the part, in one or plural operations, so as to obtain a thickness of silicon dioxide that is at least five times greater than the thickness of native silicon dioxide; and removing the silicon dioxide layer by etching.
摘要:
A method of fabricating a balance spring assembly (1) in silicon including a hairspring (2) made in a wafer of given crystalline orientation, in a plane (P). The volume of the assembly (1) is broken down into sub-components, inscribed in parallelepiped prisms, in secant pairs, at the junction areas, perpendicular to each other, each made in a wafer selected for the thickness or crystalline orientation thereof. An outer curve (4) is made in an orthogonal plane to that of the hairspring (2) joining it directly to a point in space, the projection of which into the plane (P) is located external to the hairspring (2). The sub-components are assembled at the junction areas.
摘要:
The gong for the striking work or alarm of a watch is configured to produce a sound within the audible frequency range when it is struck by at least one hammer. This gong is made of a material, wherein the square root of the ratio between the elasticity module of the material divided by the volumic mass of the selected material is less than 3300 m/s, so as to allow the gong to produce a rich sound, comprising a large number of partials, within the audible frequency range. The selected material may be, for example, gold.
摘要:
The acoustic radiating membrane (1) is for assembly in a music box or a striking watch. The membrane includes a first sheet (2) having a certain number of cells (5), which is secured to a first face of a second sheet (3) which has no cells. The membrane may also include a third sheet (4) having a certain number of cells (6) which is fixed to a second face of the second sheet (3). The shape and dimension of the cells are adapted according to the type of material and the note or notes to be radiated by the membrane with uniform amplification within the audible frequency band. The cells (5, 6) of the first and third sheets are configured in a honeycomb arrangement to occupy most of the surface of the membrane, for the uniform amplification and efficient radiation of the note or notes produced.
摘要:
The striking watch (1) includes at least one gong (3) fixed to a gong-carrier (2) and at least one hammer (4) for striking the gong. The watch further includes a magnetic gong insulator arrangement (20) for preventing any inadvertent contact between the gong and a neighboring part (5, 6) of the watch. This magnetic insulator arrangement (20) includes at least one moving permanent magnet (21) arranged on one part of the gong (3) at a distance from the gong-carrier (2) and at least one fixed permanent magnet (22, 23) arranged on a watch part (5, 6) close to the gong. This fixed permanent magnet is capable of generating a magnetic field of opposite polarity to the magnetic field of the moving permanent magnet facing the fixed permanent magnet.
摘要:
The invention concerns a watch with a striking work including a bottom plate and a gong including two ends, the gong being secured via a first end to the bottom plate. According to the invention, the second end of the gong is also secured to said bottom plate.