摘要:
The striking watch (1) includes a watch case, which is formed of a middle part (4) and a back cover (5) removably secured to the middle part, and a crystal (2) that closes the case in a sealed manner. A watch movement (20) is held inside the watch case on a plate (14). The watch movement is provided with a striking mechanism able to be actuated at determined times to produce a sound. At least one acoustic membrane (10) is arranged between the back cover (5) which includes at least one lateral aperture (6) and the plate (14) of the watch movement. This acoustic membrane is made of amorphous metal or metallic glass to radiate the sound produced by the striking mechanism towards the exterior of the case.
摘要:
The watch striking mechanism (1) includes at least one gong (11) fixed to a gong-carrier (12) and at least one hammer (2) for activating the vibration of the gong. The striking mechanism includes a first magnetic element (20) in the form of a moving micro-magnet, which is arranged on a striking portion of the hammer, and a second magnetic element (21) in the form of a fixed micro-magnet, which is arranged in one part of the gong. The second magnetic element is at least partly opposite the first magnetic element and is capable of generating a magnetic field of opposite polarity to the magnetic field of the first magnetic element. In a striking mode, said hammer may be driven in the direction of the gong to activate the vibration of said gong via a magnetic impulse due to the repulsion force of the two magnetic elements.
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 neighbouring 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 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 striking watch (1) includes a watch case, which is formed of a middle part (4) and a back cover (5) removably secured to the middle part, and a crystal (2) that closes the case in a sealed manner. A watch movement (20) is held inside the watch case on a plate (14). The watch movement is provided with a striking mechanism able to be actuated at determined times to produce a sound. At least one acoustic membrane (10) is arranged between the back cover (5) which includes at least one lateral aperture (6) and the plate (14) of the watch movement. This acoustic membrane is made of amorphous metal or metallic glass to radiate the sound produced by the striking mechanism towards the exterior of the case.
摘要:
The invention relates to a timepiece movement that includes at least one bridge (1) mounted on a bottom plate using at least one securing device (2, 4, 6) to carry at least one member of said movement. According to the invention, said at least one bridge or the bottom plate is made from a plate of micromachinable material and includes at least one bearing formed in a single-piece to carry at least one member of said movement.
摘要:
There is disclosed a portable instrument including an optical device (4; 5; 6) for measuring a physiological quantity, particularly the heart rhythm, and data emission and/or reception means, the optical device including at least one light source (41; 51; 61) for subjecting a portion of an organic tissue (10) to a light emission and at least one photoreceptor (42; 52, 53, 54; 62, 64, 66) for detecting the intensity of the light emission after propagation in the organic tissue. The optical device also forms the data emission and/or reception means, said at least one light source and/or said at least one photoreceptor being arranged for respectively emitting data to an external unit or receiving data from said external unit.
摘要:
A timepiece including a first resonator oscillating at a first frequency and connected by a main gear train to a main energy source via a main escapement, a second resonator oscillating at a second frequency which is lower than the first frequency and cooperating with the main escapement in order to synchronize maintenance of the first resonator to the second frequency.
摘要:
The strike mechanism of a watch includes a gong secured by one end thereof to a gong-carrier integral with a plate, a hammer rotatably mounted on the plate for striking the gong at predetermined times, a damping counterspring for keeping the hammer at a distance from the gong in an idle mode, and a drive spring for driving the hammer. The drive spring includes one end secured to the plate and one end that is free to move. The spring is windable so that the free end of the drive spring drives the hammer against the gong in a strike mode to generate an acoustic sound. The strike mechanism further includes a stop member on the path of the hammer drive spring in the direction of the gong for increasing the rotational strike speed following contact of an intermediate part of the drive spring acting against the stop member.
摘要:
A method of fabricating a reinforced silicon micromechanical part includes: micromachining 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.