摘要:
The invention proposes a MEMS micromotor produced in a plate made of crystalline or amorphous material, in particular based on silicon, which comprises a lower layer forming a substrate, and an upper layer in which at least one actuator and a rotor is etched, the actuator driving the rotor in rotation about a shaft (64), characterised in that the shaft (64) is connected to the plate, in that the shaft (64) extends axially through a hole of the plate, and in that the shaft (64) is clamped in the hole and centred in the hole by means of elastic fixing structures which are produced by etching in the substrate and which are arranged on the circumference of the hole.
摘要:
The invention proposes a drive module intended to engage with a clock wheel having a plate made of crystalline or amorphous material comprising a lower layer, which forms a substrate, and an upper layer, into which an MEMS type of micromotor is etched, wherein the micromotor has at least one actuator rotatably driving a rotor, characterised in that a pinion arranged coaxially to the rotor is rotatably connected to the rotor and disposed above the rotor, said pinion being provided to engage with the clock wheel in an engagement zone located close to an outer peripheral edge of the plate, that the rotor is disposed on the plate in order to minimise the distance between the outer peripheral edge of the rotor and the outer peripheral edge of the plate corresponding to the engagement zone, and that the diameter of the pinion is larger than that of the rotor so as to protrude relative to the plate into the engagement zone. The invention also proposes a process for the production of this module and a timepiece comprising such a module.
摘要:
Assembly element (18) made in a plate of brittle material, including an aperture (32) provided for the axial insertion of an arbour (26). The inner wall (33) of the aperture (32) includes elastic structures (34), which are etched into the plate and which each include at least one support surface (36) for gripping the arbour (26) radially in order to secure the assembly element (18) relative to the arbour (26). The assembly element (18) includes a first series (S1) of elastic structures (34) etched in a top layer (39) of the plate and a second series (S2) of elastic structures (34) etched in a bottom layer (41) of the plate.A timepiece may be fitted with this assembly element.
摘要:
Assembly element (18) made in a plate of brittle material, such as silicon, in particular for a timepiece (10), including an aperture (32) provided for the axial insertion of an arbour (26), the inner wall (33) of the aperture (32) including elastic structures (34) which are etched into the plate and which each include at least one support surface (36, 38) for gripping the arbour (26) radially in order to secure the assembly element (18) relative to the arbour (26). Each elastic structure (34) is formed by a fork which is connected to the inner wall (33) of the aperture by a bridge of material (40) and which includes two branches (42, 44) extending, on either side of the bridge of material (40), generally towards the arbour (26). Each branch (42, 44) includes a support surface (36, 38) in proximity to the free end (46, 48) thereof.The invention also proposes a timepiece fitted with an assembly element (18) of this type.
摘要:
The invention proposes an arrangement for the mechanical interfacing of a micromotor of the MEMS type with a toothed wheel in which the micromotor is produced in the upper layer of a plate made of crystalline or amorphous material and comprises at least one actuator which drives a rotor in rotation, characterised in that a pinion, coaxial with the rotor and arranged above the rotor, is connected in rotation to the rotor by means of at least one pin which is received in an associated housing and in that the pinion meshes with the toothed wheel.
摘要:
The invention proposes an analogue display member (10) fitted to a timepiece, of the type including a main body in which an arbour hole is arranged, characterized in that the main body is made of silicon based crystalline material. The invention also proposes a timepiece provided with such a display member (10). The invention also proposes a method of fabricating analogue display members (10) to be fitted to timepieces, each analogue display member (10) including a main body, characterized in that it includes at least one step of micro-machining a wafer of silicon based crystalline material to form at least one main body in said material.
摘要:
An electronic timepiece (10) includes a case (12) which is fitted with a dial (28) and which contains an electronic control circuit (22) driving a display device (24), of the type wherein the dial (28) includes a main body (48) in the form of a plate which is made of semiconductor material, and of the type wherein the control circuit (22) includes at least one control unit (36) and a time base circuit (34), characterized in that the control circuit (22) includes at least one integrated circuit element (34, 36) which is etched in the main body (48) of the dial (28). The invention also proposes a dial (28) to be fitted to the timepiece (10).
摘要:
The invention concerns a control system for a servomechanism comprising a control member that can move between first and second positions defining a variable electric quantity respectively between a minimum quantity and a maximum quantity, characterized in that the control system further comprises low voltage powering means, voltage increase means connected to the terminals of the low voltage powering means and delivering a high voltage at output, means for measuring a value of the variable electric quantity, powered by the low voltage powering means when the high voltage is being generated, and means for regulating the voltage increase means arranged to increase the high voltage delivered for a variation in the measured electric quantity value lower than a variation threshold determined by the servomechanism, respectively to decrease the high voltage delivered for a variation in the measured electric quantity values higher than the determined variation threshold.
摘要:
A watch comprising at least a minute hand, an hour hand and a knobbed shaft which can occupy an extended axial position known as a correcting position.Minute-by-minute correction or correction by whole time zones is operated with the knobbed shaft in the same extended position by the selection of the speed at which the knob is rotated. Time zone correction always uses as point of reference the real time at the moment of actuation of the knob into the extended position, and the watch includes means operative to cancel any step-by-step correction of the minute hand which may have preceded the time zone correction.
摘要:
A keyboard having a matrix of keys or pushbuttons arranged in a matrix is ovided with a plurality of stationary electrical contacts arranged in a similar matrix. Movable contacts operated by the pushbuttons are provided by a plurality of ladder-shaped flexible conductive members. Each ladder-shaped member extends along one row of pushbuttons and has a "rung" of the ladder extending through the space between a pushbutton and its associated stationary contact. The body of the keyboard is provided with grooves for inserting the ladder-shaped members and the spacing between these grooves is such that the rung portions of the member are flexed upwardly against the pushbutton and out of contact with the stationary contact when the pushbutton is in the normal position. Each flexed rung exhibits a bistable characteristic so that as a pushbutton is depressed, a point is reached at which less force is required to further depress the pushbutton. The stationary contact extends upwardly a sufficient distance to prevent the rung from assuming the second stable state. Hence, when the pushbutton is released the rung returns to its normal position and in doing so moves the pushbutton back to its normal position.