201results about "Horological bearings" patented technology

To provide a mechanical timepiece in which a silicon escape wheel is less easily broken.SOLUTION: A mechanical timepiece 1 has an escapement 80 including a silicon escape wheel 110 and is configured so that three hands, i.e., an hour hand 4A, a minute hand 4B, and a second hand 4C are gathered to one place. An ganging pin 120 of an escape wheel and pinion 100 including the escape wheel 110 and a fourth winding pinion 243 of a fourth wheel and pinion 24 to which the second hand 4C is attached are engaged with each other. A shaft 241 of the fourth wheel and pinion 24 is provided with a biasing force to an axial direction extending to the side where the second hand 4C is attached, by an elastic member 244.SELECTED DRAWING: Figure 4

The invention relates to a horological movement comprising a striking mechanism of a watch including a vibrating element and a striking device of said vibrating element comprising a hammer fixed overhanging a structure of the horological movement by means of strips of a flexible guide, said strips being both arranged so as to extend in directions intersecting at a point materialising an instantaneous centre of rotation C disposed along an axis T tangent to the vibrating element.

The present invention provides a bearing that elastically dampens axial shocks. [Solution] The present invention relates to a bearing for the shaft of a watch component, comprising a bearing body 2 including a housing defined by a circumferential wall 20 of the bearing 1 forming a through hole 8, wherein the hole 8 includes a small restraint assembly 10 including a first elastic member 3, and an assembly 27 including a fluid storage space consisting of a second elastic member 6, a pivot element 5, and an end stone element 4, wherein the first elastic member is attached to the first opening 9a of the through hole 8 by being fixed to a through opening provided in the circumferential wall, the first member 3 is configured to elastically dampen at least axial shocks, and in the assembly 27, in this bearing, only the second elastic member of the assembly is fixed to the circumferential wall.

The invention relates to a method for manufacturing a timepiece pinion, characterised in that the method comprises the following steps: - providing a block to be machined; - machining the block using a machining device comprising a mechanical cutting tool that acts on the block through direct contact so as to remove chips from the block, characterised in that - the step of machining the block is carried out using a spindle to which the block is attached and on which it is rotated at a speed greater than or equal to 20,000 rpm, or even greater than or equal to 22,000 rpm, or even greater than or equal to 25,000 rpm, or even greater than or equal to 30,000 rpm, or even greater than or equal to 35,000 rpm, or even greater than or equal to 40,000 rpm, while the mechanical cutting tool comes into contact with the block to remove material in successive passes, in order to form a timepiece component having rotational symmetry; or in that - the step of machining the block is carried out by a mechanical cutting tool, such as a milling cutter or a grinding wheel, rotated at a rotational speed greater than or equal to 100,000 rpm, or even greater than or equal to 120,000 rpm, or even greater than or equal to 150,000 rpm, or even greater than or equal to 180,000 rpm, which comes into contact with the block, held stationary by a spindle, in order to remove material.

The invention relates to a flexible guide for a rotary resonator mechanism, particularly for a clockwork movement, the guide (1, 10, 30, 40, 50) comprising a first support (2, 11), a movable element (3, 13) relative to the first support (2, 11), a first pair of flexible blades (14, 15) connecting the first support (2, 11) to the movable element (3, 13), such that the movable element (3, 13) can move relative to the first support (2, 11) by bending the blades (14, 15) in a circular motion around a center of rotation (6, 18), the flexible guide (1, 10, 30, 40, 50) being arranged substantially in a plane, characterized in that it comprises prestressing means (7, 27, 37, 47), the prestressing means (7, 27, 37, 47) being configured to apply a buckling force to the flexible blades (14, 15) by bringing the first support (2, 11) closer to the moving element (3, 13), so that the flexible guide (1, 10, 30, 40,50) includes two stable positions (28, 29) of the moving element (3, 13) relative to the first support (2, 11) for which the restoring moment is zero, the two stable positions (28, 29) having a predetermined angle of rotation (2a) between them.

A method and device for manufacturing a bevelled stone, particularly for a timepiece are disclosed. A precursor is produced from a mixture of at least one material in powder form with a binder. The method includes pressing the precursor so as to form a green body, using a top die and a bottom die comprising a protruding rib, sintering the green body so as to form a body of the future stone in at least one material, the body including a peripheral face and a bottom face provided with a groove, and machining the body including a substep of planning the peripheral face up to the groove, such that an inner wall of the groove forms at least a flared part of the peripheral face of the stone.

Bearing (1a) for guiding along an axis of a clockwork shaft, in particular a bearing for a portion of a shaft of a clockwork resonator, comprising at least one support element (13a) arranged to exert, radially to the axis or substantially radially to the axis, an action on the shaft, in a permanent manner.

Watchmaking indexing element (10), cooperating coaxially with a watchmaking component (20) having an indexing relief (30), having indexing means (13) cooperating with this indexing relief (30) for their relative indexing in a plurality of indexing positions, and carried by first elastic arms (14) each having a first indexing surface (15), each first elastic arm (14) being arranged to exert a substantially radial thrust force relative to this said component (20), and this indexing element (10) has at least a first bearing surface (11) arranged so as, in the free state in a service position, to remain at a distance from a second complementary bearing surface (31) that a component (20) has, and in case of shock, to cooperate in a buttress and / or guide bearing with the second complementary bearing surface (31).

The invention relates to a method for manufacturing a perforated stone, in particular forming a cushion, comprising the following steps: - production of a precursor from a mixture of at least one powdered material with a binder; - pressing, using an upper die and a lower die provided with a punch, of the precursor in order to form a green body of the future perforated stone comprising a blind cavity having a height between a height of the green body and a height of the future perforated stone, the cavity being provided with upper and lower parts having respectively rudiments of a through hole and a functional element of the future perforated stone; - sintering of said green body in order to form a body of the future perforated stone in said at least one material;- machining of the body of the future pierced stone comprising a first sub-step of shaping a top of the body during which a height of the upper part providing for the creation of an opening in the rough of the through hole allowing to connect the functional element to said upper surface is configured and a second sub-step of shaping a base of said body aimed at defining a lower surface of said pierced stone allowing to connect the functional element to said lower surface.;

To provide a carousel that is smaller in thickness than carousels of the prior art.SOLUTION: The invention relates to a carousel 1 for a horological movement 10. The carousel includes: an inertial mass; a guide; a resilient return element for returning the inertial mass, configured to cause the inertial mass to oscillate in a plane; and an escapement mechanism cooperating with the inertial mass. The carousel includes a carriage intended to be rotatable. The inertial mass, the guide, the resilient return element and the escapement mechanism are arranged inside the carriage. The carousel includes a first ball bearing allowing the carriage to rotate when mounted in a horological movement, and a second ball bearing allowing the escapement mechanism to be actuated. The first ball bearing and the second ball bearing are arranged substantially in the same plane.SELECTED DRAWING: Figure 2

A bearing (1) for an axis of a horology component including a bearing body (2) having an enclosure delimited by a peripheral wall (20) of the bearing forming a through hole (8), the hole (8) including a compact restrained assembly (10) including a first resilient organ (3) and an assembly (27) including a storage space (33) for fluid (31) consisting of a second resilient organ (6), a pivot element (5) and an endstone element (4), the first resilient organ (3) being mounted in a first orifice (9a) of the through hole (8) by being secured in through openings provided in the peripheral wall, the first organ (3) being configured to at least elastically damp axial shocks, and in the assembly (27), in this bearing (1) only the second resilient organ (6) of this assembly (10) is secured to the peripheral wall (20).

Method for producing a surface (20) of revolution of a watch component (1), the method comprising: - a machining step with a femtosecond laser beam of a first surface of the watch component so as to obtain a second surface, in particular so as to obtain a second surface whose roughness Ra is less than 100 nm, or even less than 70 nm, then - a tribofinishing step applied to the second surface so as to obtain said surface of revolution, the surface of revolution being ceramic.

The invention relates to a watch movement comprising a control rod (1), a movement winding mechanism, a date display mechanism and a time display mechanism, the watch movement comprising a first rocker (10) carrying a drive wheel (11) capable of being kinematically linked to the control rod (1), and carrying at least one time-setting wheel (12) arranged to cooperate with the time display mechanism and capable of being kinematically linked to the drive wheel (11), and a second rocker (20) carrying a date correction mechanism capable of being kinematically linked to the drive wheel (11) as well as to the date display mechanism,the second rocker (20) being pivotally mounted on the first rocker (10) and arranged to move between an engagement position in which the date correction mechanism cooperates with the date display mechanism and a disengagement position in which the date correction mechanism is disconnected from the date display mechanism, and the control rod (1) and the first (10) and second (20) rockers are arranged to occupy three positions.

A moving clock component (10), comprising around an axis (D), a first element (1) having a first bearing (15) and a second element (2) having a second bearing (25) which cooperates by friction with a third bearing (30) which has a third element (3) interposed between the first element (1) and the second element (2), this third element (3) has a fourth bearing (35) cooperating by friction with the first bearing (15) or being driven onto this first bearing (1), and the diameter of the third bearing (30) is at least twice the diameter of the fourth bearing (35).

The invention relates to a method of lubricating the balance shaft of a watch part using a lubricant whose composition includes a multi-alkylated cyclopentane (MAC), as well as the use of such a lubricant for such a purpose.

The invention relates to a method for manufacturing a timepiece component (10), characterised in that the method comprises the following steps: - providing a ceramic or ceramic-based block to be machined; - machining the block using a machining device comprising a mechanical cutting tool that acts on the block through direct contact so as to remove chips from the block, and in that the step of machining the block is carried out using a spindle to which the block is attached and on which it is rotated at a speed greater than or equal to 30,000 rpm, or even greater than or equal to 32,000 rpm, or even greater than or equal to 35,000 rpm, or even greater than or equal to 38,000 rpm, or even greater than or equal to 40,000 rpm, while the mechanical cutting tool comes into contact with the block to remove material in successive passes, in order to form a timepiece component having rotational symmetry.

Disclosed is a pivot stone (1) for a timepiece movement (100), the pivot stone (1) comprising a pivot hole (5) that has a first axis (A1) and is able to pivot a timepiece component (98) or to pivot about a timepiece component (98), such as a timepiece axis, the pivot hole having a surface (6) that includes main grooves (61) for machining by abrasion, in particular main polishing grooves, which are oriented substantially orthoradially relative to the first axis (A1).

A method for manufacturing a pivot bearing (1) for the pivoting of a timepiece component (2), in particular a pivot stone, includes:—boring (E1) a hole (10a) in a bearing blank (1a) along an axis (A1) intended for the pivoting of a timepiece component (2), this hole (10a) forming a start point (13a) of a first pivot zone (13) of the bearing (1), then—laser engraving (E2), in the blank (1a), in particular using a femtosecond laser, a second clearance zone (14) of the bearing (1), juxtaposed with the start point (13a) of a first pivot zone (13), this second clearance zone (14) of the bearing (1) opening at a first face (11a) of the bearing (1) blank (1a), then—removing material by wear (E3), in particular by olive-cutting, at the start point (13a) of the first pivot zone (13) of the bearing (1) and a boundary zone (14a) between the start point (13a) and the second clearance zone (14) of the bearing (1) in order to form a first pivot zone (13) and a second clearance zone (14) that are juxtaposed, connected to each other by a rounded connection.

The invention relates to a method for manufacturing a stone (30), in particular for a timepiece, from a mineral body that is monocrystalline or polycrystalline in nature. The method comprises a step of ablation, in which the body is subjected to material ablation carried out by scanning at least one face of the body using ultra-short pulse laser radiation, the duration of which is less than 100 picoseconds and the beam of which is guided by a precession system having at least three axes and which is configured to at least partially eliminate the angle of the laser cone, which results from the focusing of the laser. The invention further relates to a mineral stone (30) that is monocrystalline or polycrystalline in nature, in particular for a timepiece movement, wherein the stone (30) is obtainable by the method. The stone particularly comprises a face (25) which is provided with a peripheral rim (27), in particular for laterally surrounding an endstone (35) in a bearing.

The invention relates to a method for manufacturing a timepiece component, characterised in that the method comprises the following steps: - providing a block to be machined; - machining the block using a machining device comprising a mechanical cutting tool that acts on the block through direct contact so as to remove chips from the block, characterised in that - the step of machining the block is carried out using a spindle to which the block is attached and on which it is rotated at a speed greater than or equal to 20,000 rpm, or even greater than or equal to 22,000 rpm, or even greater than or equal to 25,000 rpm, or even greater than or equal to 30,000 rpm, or even greater than or equal to 35,000 rpm, or even greater than or equal to 40,000 rpm, while the mechanical cutting tool comes into contact with the block to remove material in successive passes, in order to form a timepiece component having rotational symmetry; or in that - the step of machining the block is carried out by a mechanical cutting tool, such as a milling cutter or a grinding wheel, rotated at a rotational speed greater than or equal to 100,000 rpm, or even greater than or equal to 120,000 rpm, or even greater than or equal to 150,000 rpm, or even greater than or equal to 180,000 rpm, which comes into contact with the block, held stationary by a spindle, in order to remove material.

A clockwork display device (100) comprising a first display element (1) and a second display element (2) superimposed above a fixed part (50) comprising a main support surface (51), this second display element (2) is subjected to opposing forces exerted, on the one hand, by lower return means (52) which tend to bring the second display element (2) closer to the first display element (1), and, on the other hand, by upper return means (63) which tend to move the second display element (2) away from the first display element (1) without contact between them or by mechanical spacing means (60) which comprise a support surface (600) ensuring a stop support function on a stop surface (210) of the second display element (2), to limit the stroke of the second display element (2) towards the first display element (1).

An organ comprises a rotating element (22) and a magnetic device for rotationally guiding the rotating element, the magnetic device being arranged to exert a radial magnetic biasing force on the rotating element when a central axis (26) of the rotating element undergoes a radial displacement with respect to a given rotation axis (28). The magnetic device comprises a pair of annular magnets, a first annular magnet (32) of the pair of annular magnets being carried by the rotating element and a second annular magnet (34) being carried by a structure of the organ. When the central axis of the rotating element coincides with the rotation axis, the second annular magnet is parallel and axially superposed to the first annular magnet, the first and second annular magnets being in a magnetic attraction arrangement so as to exert a first axial magnetic force on each other and a first radial magnetic force substantially as soon as the central axis of the rotating element is radially displaced from the rotation axis. In particular, the organ is a timepiece movement and the rotating element is a balance.

The invention relates to a pivot axis for a watch movement comprising at least one pivot (3) made of a non-magnetic metallic material (4) at at least one end to limit its sensitivity to magnetic fields. Said non-magnetic metallic material (4) is a non-magnetic light metal or a non-magnetic alloy of said light metal, and at least the external surface of said pivot (3) is coated with an anodic layer of oxide of said material (5), obtained by anodizing. The invention relates to the field of watch movements.

The present invention relates to a clock resonator mechanism (100) comprising a structure (1) which carries an anchoring unit (30) via a flexible suspension system (300), an inertial element (2) being suspended from the anchoring unit (30) and oscillating about a pivot axis (D) extending along a first direction Z with a first rotational degree of freedom RZ under the restoring force of a flexible pivot (200), the flexible pivot (200) comprising longitudinal elastic strips (3), each elastic strip being fixed to the inertial element (2) and the anchoring unit (30), the flexible suspension system (300) allowing the anchoring unit (30) to move in five degrees of freedom, the resonator (100) being a composite assembly made of at least two different materials, the at least two different materials being used on the one hand for the flexible pivot (200) and on the other hand for the flexible suspension system (300).

A karussel for a horological movement, the karussel including an inertial mass, a guide and a resilient return element for returning the inertial mass, configured to cause it to oscillate in a plane, as well as an escapement mechanism cooperating with the inertial mass, the karussel including a carriage intended to be rotatable, the inertial mass, the guide, the resilient return element and the escapement mechanism being arranged inside the carriage, the karussel including a first ball bearing allowing the carriage to rotate, when mounted in a horological movement, and a second ball bearing allowing the escapement mechanism to be actuated, the first ball bearing and the second ball bearing being arranged substantially in the same plane. A horological movement can include such a karussel, and a timepiece can include such a horological movement.

Disclosed is a micromechanical component, in particular a timepiece wheel, in particular an escapement wheel, comprising a substrate with a first material comprising at least nickel and phosphorus, which substrate is covered, on at least one surface of the wheel substrate, by a coating of a second material comprising at least nickel and poorer in phosphorus than the first material, or devoid of phosphorus, and the second material constitutes the peripheral layer of the wheel at this at least one surface of the substrate.

To provide an oscillator mechanism capable of avoiding out-of-plane secondary vibration.SOLUTION: A balance wheel 15 for an oscillator mechanism 1 for a timepiece includes a main arm 6 arranged along a longitudinal axis. The balance wheel 15 comprises at least a first lateral direction weight 11 for adjusting inertia of the balance wheel 15. The first lateral direction weight 11 is mounted in a movable manner to the main arm 6 of the balance wheel 15 so as to be able to take a plurality of positions closer to or further away from the main arm 6 in order to adjust inertia of the balance wheel 15.SELECTED DRAWING: Figure 1

One aspect of the invention relates to a method for depositing a metal matrix composite coating on a support part, comprising the steps of immersing the support part to be coated in an electrolytic bath containing the metal to be deposited (50), and then proceeding to deposit the metal in a layer on the support part to be coated by electrodeposition (60), characterized in that, prior to immersing the support part to be coated in the electrolytic bath, a two-dimensional material is incorporated and dispersed in the electrolytic bath (30) in a determined quantity to distribute the two-dimensional material homogeneously in the thickness of the metal matrix constituted by the metal deposited in a layer.