EP1804143B1 - Mechanical timepiece provided with means for adjusting the backlash of a wheel - Google Patents

Mechanical timepiece provided with means for adjusting the backlash of a wheel Download PDF

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Publication number
EP1804143B1
EP1804143B1 EP05028554A EP05028554A EP1804143B1 EP 1804143 B1 EP1804143 B1 EP 1804143B1 EP 05028554 A EP05028554 A EP 05028554A EP 05028554 A EP05028554 A EP 05028554A EP 1804143 B1 EP1804143 B1 EP 1804143B1
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EP
European Patent Office
Prior art keywords
bar
bearing
screw
bridge
zone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP05028554A
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German (de)
French (fr)
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EP1804143A1 (en
Inventor
Christian Rüfenacht
Yvan Villar
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Omega SA
Original Assignee
Omega SA
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Filing date
Publication date
Application filed by Omega SA filed Critical Omega SA
Priority to DE602005014798T priority Critical patent/DE602005014798D1/en
Priority to AT05028554T priority patent/ATE433139T1/en
Priority to EP05028554A priority patent/EP1804143B1/en
Priority to JP2006347342A priority patent/JP5020626B2/en
Priority to US11/617,009 priority patent/US20070147180A1/en
Priority to CN2006101714979A priority patent/CN1991636B/en
Publication of EP1804143A1 publication Critical patent/EP1804143A1/en
Priority to HK07110027.9A priority patent/HK1104939A1/en
Application granted granted Critical
Publication of EP1804143B1 publication Critical patent/EP1804143B1/en
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Anticipated expiration legal-status Critical

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B29/00—Frameworks
    • G04B29/02—Plates; Bridges; Cocks
    • G04B29/022—Bridges
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B35/00—Adjusting the gear train, e.g. the backlash of the arbors, depth of meshing of the gears

Definitions

  • the present invention relates to a mechanical timepiece comprising means for adjusting the play of a rotating wheel, in particular the play of a balance wheel.
  • Patent document is known CH 368 752 a device for adjusting the axial drop of the axis of a rocker by elastic deformation of the cock.
  • the rooster is formed of a base fixed on a plate and a board in which is arranged one of the two bearings in which pivots the axis of the balance.
  • a set screw having its head on the side of the balance. This screw is operable from the top of the board and the head is engaged in a groove of a second adjacent screw for supporting the adjusting screw.
  • This adjustment screw By actuating this adjustment screw, one deforms the board of the rooster by varying the height of the free end thereof.
  • the board has a substantially constant thickness with a slight extra thickness on the side of the base of the cock.
  • Patent document is also known FR 1.545.748 a device for adjusting the play of a balance wheel in a timepiece.
  • the cock is formed here by a base fixed to a plate and a board in the central part of which is arranged the upper bearing for the axis of the balance and finally by an end portion extending said board.
  • This end portion has an inclined lower surface.
  • a disk arranged eccentrically on a pin is provided to vary the author of the terminal portion relative to the plate.
  • the eccentric disc is provided in abutment against the inclined lower surface so that the actuation of the pin on which it is mounted causes a displacement in height of the end portion. It results in a deformation of the rooster's board; which makes it possible to adjust the balance of the pendulum.
  • the deformation of the board of the rooster generates relatively large tensions in the central part of this board where is arranged the bearing. These tensions are harmful for the bearing and the various elements associated with it.
  • the deformation is essentially localized in the central part being given that it has a lower obviously provided in the region superimposed on the spiral. This causes a certain curvature of the board in this central region; which is harmful for the free rotation of the pendulum.
  • CH 503 308 which relates to a device for adjusting the height position of a bridge of a clockwork movement, including the rooster.
  • the rooster is formed of a base and a board.
  • the board has at the end opposite the base a screw which rests on a bridge or the plate of the movement. By actuating this screw, the relative height of the end of the board is varied. This causes a deformation of this board and therefore also a variation of the position of the bearing arranged in a central portion of the board.
  • the adjusting screw is held in a position defined by a second screw whose head presses on the head of the adjusting screw.
  • An object of the present invention is to provide a device for adjusting the play of a mobile rotating in a timepiece, in particular a balance, which is relatively inexpensive and to adjust the frolicking of the mobile rotating efficiently and rapidly, by an elastic deformation of the bridge provided with the upper bearing in which pivots the axis of the rotating wheel, but limiting the deformation voltages in the region where the upper bearing is arranged.
  • the present invention as defined by claim 1 relates to a mechanical timepiece equipped with a rotating wheel which comprises an axis or shaft whose one end pivots in a first bearing carried by a bridge and the other end pivots in a second bearing arranged in a plate, this timepiece comprising means for adjusting the frust of this axis or shaft of the rotating mobile device.
  • This adjustment means are formed on the one hand by a means for fixing a first part from the bridge to the plate which leaves this first part in a fixed position relative to the plate and, secondly, by means of deformation of the bridge which is arranged to vary the relative position between a second part of this bridge and the plate by deforming this bridge, these first and second parts being provided so that an actuation of the deformation means causes a variation of the position of the first bearing relative to the second blade.
  • This timepiece comprises at least one zone of least mechanical resistance located either between the zone of the first bearing and one of the two parts, or between said two parts and outside the zone of said first bearing and defining a localized deformation zone. or a flexible articulation between these first and second parts.
  • this deformation zone localized is defined by a transverse groove made on the side of the underside of the deck board.
  • the bridge is double and the first and second parts of which defined by the two bases of the bridge.
  • FIG. 1 To the figure 1 is represented a first embodiment of a mechanical timepiece 2 equipped with a rotating wheel and comprising means for adjusting the fret of the rotating wheel according to the present invention.
  • the bridge in this embodiment is a pendulum bridge 4 and the rotating mobile is a pendulum 6.
  • the balance 6 comprises an axis whose first end pivots in a first bearing carried by the board 10 of the balance bridge .
  • the first bearing is arranged in an opening of a bolt carrier 8 with a bumper device known to those skilled in the art.
  • the bolt carrier 8 rests on the central seat 12 of the bridge 4.
  • the second end of the axis of the balance pivots in a second bearing arranged in a plate 14 of the timepiece 2.
  • the balance bridge 4 is a double bridge formed of two bases 16 and 18 respectively arranged on one side and the other of the board 10 and therefore the first bearing arranged in the central portion 20 of this bridge.
  • the seat 12 for the bolt carrier has in this variant a thickness less than that of the board 10 in its two parts directly adjacent to this seat.
  • the bridge 4 comprises two areas of least mechanical strength 22 and 24 respectively arranged at the two end regions of the board 10, that is to say respectively between the two bases 16 and 18 and the central portion 20 bearing the first bearing for the axis of the balance. These two areas of least mechanical strength are here each formed by a transverse area defined by a groove of a certain width. We will return to the function of these areas of least mechanical resistance thereafter.
  • the second base 18 of the bridge 4 defines a second portion fixed to said plate by means of a clamping screw 32.
  • This second portion 18 is associated with a means 34 of elastic deformation of the bridge 4.
  • This means of deformation is constituted here by a screw 34 of relatively large diameter and pierced in the center.
  • This adjusting screw 34 comprises a flat head 36 provided with a slot for screwing this screw from the lower part of the bridge 4.
  • the adjusting screw 34 further comprises a cylinder 38 having a fine external thread so as to be able to vary finely the distance between the outer surface 37 of the head 36 and the lower surface 5 of the bridge 4.
  • the hole 40 which passes through the screw 34 has a diameter greater than that of the clamping screw 32, so that it can be introduced freely in this through hole 40.
  • the screw 34 is screwed into a hole 42 passing through the base 18 of the bridge 4
  • the hole 42 has an enlargement in the upper part of the base 18 with a substantially flat annular surface and serving as a stop at the head of the clamping screw 32.
  • This screw 32 is screwed at its lower end into the plate 14 to secure the base 18 to the plate 14.
  • the adjusting screw 34 has at its upper end opposite to the head 36 an upper annular portion having two diametrically opposed slots 44 and arranged to allow a screwdriver to be inserted to turn this adjusting screw 34 from the upper face 46 of the bridge in the opposite direction. absence of the clamping screw 32, as is apparent in particular from figures 4 and 6 .
  • a friction spring in the form of a curved washer 48 is arranged between the head 36 of the screw 34 and the bottom surface 5 of the base 18. To ensure positioning of this base 18 in the general plane of the watch movement 2, a positioning pin 50 is provided.
  • the adjustment screw 34 By turning the adjustment screw 34, the relative position between the base 18 and the plate 14 is varied since the lower surface 37 of the head 36 rests on this plate. To adjust the height of the base 18, the clamping screw 32 will be removed so as to be able to make this adjustment from the upper surface 46 of the bridge 4 through the through opening 42. To do this, the watchmaker will maintain by example using a suitable tool the screw 34 bearing against the plate 14 if necessary Since the base 16 is fixed to the plate in an invariable position, an actuation of the adjusting screw 34 generates a deformation of the bridge 4, as shown in FIG. figure 7 .
  • the adjustment screw 34 By actuating the adjustment screw 34, the distance between the base 18 and the plate 14 is varied and the plate 10 is deformed so that the central zone 20, where the upper bearing for the axis of the balance is located, is subjected to also a displacement thus allowing the adjustment of the play of this balance.
  • the board 10 comprises at its two end portions two zones 22 and 24 of least mechanical strength which each define a zone of localized deformation or flexible articulation between the two bases 16 and 18.
  • These zones of localized deformation are obtained by machining two grooves on the lower side of the board 10 which define transverse areas of the bridge 4 having a smaller thickness than the two adjacent regions 54 and 56, respectively 55 and 57.
  • the deformation of the bridge is thus located essentially in the two transverse zones 22 and 24 so that the bases 16 and 18 undergo almost no tension due to the deformation and the central portion 20 of the board 10 remains substantially flat.
  • these zones 22 and 24 make it possible to reduce overall the tensions generated in the balance bridge 4 when the base 18 is displaced in height relative to the base 16.
  • the adjustment of the balance of the balance can generate a certain inclination of the central portion 20 of the board 10, but this inclination remains low.
  • the seat 12 of the bolt carrier remains flat and subjected to relatively little tension. It will be noted that the arrangement of the zones of lesser thickness 22 and 24 is all the more necessary as the seat 12 of the peg carrier is formed by a machining of the board 10. Thus, the seat 12 has a thickness less than the peripheral regions 54 and 55 at this seat 12, which makes the central zone 20 more easily deformable.
  • the bridge 4A has substantially an S-shaped deformation, the deformation of the plate 10A being located substantially at its central portion 20A. This central part then undergoes strongly deformation stresses. This is harmful for the bearing and the rotation mobile whose end rotates in this bearing.
  • Those skilled in the art may design other bridges and other means to reduce internal stresses in the board of the deformed bridge by the balance of the equilibrium control means.
  • the frost control device according to the present invention is relatively simple and therefore inexpensive.
  • the coaxial arrangement of the clamping screw 32 and the adjusting screw 34 does not increase the overall size of the bridge.
  • the mounting of the lightening adjustment device is easily performed by simply screwing the adjusting screw 34 from the lower face 5 of the bridge 4 until its head is about a certain height. Then, the bridge can be assembled to the plate with the rocker mounted in the two bearings associated with it. Then, the equilibrium of the balance (or of another mobile rotating) can be adjusted simply by turning the screw 34 with the slot 44 provided at its upper end opposite the head 36, this upper end being accessible by a tool from the upper face 46 of the bridge through the opening 42 through the base 18. Once the adjustment is made, the screw 32 is inserted into the through hole 40 of the adjusting screw 34 and tightened so as to rigidly fix the base 18 to the plate 14. The spring washer 48 maintains a set screw 34 in the intended position. Once the adjustment of the distance between the two bearings is finely carried out by means of the adjustment screw 34, the height adjustment system of the bridge 4 is masked and the bridge is firmly fixed to the plate.
  • the present invention can also be applied to a watch movement equipped with a vortex and in which the vortex of the tourbillon cage is adjusted by means of the device of the present invention associated with the tourbillon bridge carrying a two bearings in which rotates the vortex cage.
  • FIG 9 is schematically shown in section a second embodiment of a timepiece according to the present invention.
  • the balance bridge 64 is of the simple type, that is to say with a base 68 arranged at one end of the board 70 which has at its other free end 72 a first bearing 74 in which pivots the axis 76 of the balance 6.
  • the second end of the axis 76 pivots in a bearing 78 arranged in the plate 14.
  • the bearings 74 and 78 are shown schematically in the figure 9 .
  • the bearing 74 is generally associated with a bumper device known to those skilled in the art.
  • the adjustment means of the balance wheel 6 are obtained, according to the principle of the present invention, by deformation of the bridge 64 causing a variation of the inclination of the board 70 and therefore a variation of the distance between the bearings 74 and 78.
  • the base 68 comprises two distinct parts 80 and 82 separated by an intermediate zone 84 defining a transverse zone of lower mechanical strength allowing localized deformation between the parts 80 and 82 of the base.
  • the portion 80 which is furthest from the bearing 74 is fixed rigidly to the plate 14 by means of a fixing screw 30. This first part 80 is held in a fixed and invariable position relative to the plate 14 when the screw 30 is tight.
  • the second portion 82 is equipped with a device for varying the position of this portion 82 relative to the plate 14, which causes a deformation of the bridge, especially in the intermediate region 84.
  • the relative position between the two parts 80 and 82 of the bridge 64 can be varied, which causes a displacement of the board 70 and in particular the bearing 74 relative to the plate 14.
  • the deformation means of the bridge acting on the second part 82 is similar to that described in the context of first embodiment. It will not be described again here.
  • FIG. 10 another embodiment of the deformation means of the bridge 4B is shown.
  • This alternative can be applied to the two embodiments of a timepiece according to the invention described above.
  • the embodiment shown in figure 10 corresponds to the case of a double bridge according to the first embodiment shown in FIG. figure 1 .
  • the bridge 4B therefore comprises a base 18B similar to the base 18 of the embodiment of the figure 1 .
  • the embodiment of the figure 10 differs essentially from that described with the aid of the preceding figures in that the fixing screw of the base 18B to the plate 14 is not coaxial with the screw 94 for adjusting the balance of the balance.
  • the screw 94 used for the deformation of the bridge 4B and the variation of the relative position between the base 18B and the plate 14, is arranged between the clamping screw 32 and the board 10 of the bridge 4B. Note that this screw 94 can also be arranged on the other side of the screw 32.
  • the adjustment screw 94 differs from the screw 34 of the other embodiments in that it does not have a through hole and in that its upper end 96 is visible and accessible from the upper face 46 of the bridge 4B while the clamping screw 32 is placed in the through hole 98 made in the base 18B.
  • the end 96 of the screw 94 has a slot 44B for rotating the screw 94 and thus to vary the distance between the base 18B and the plate 14. To increase this distance, the watchmaker will obviously loosen the screw 32.
  • This last embodiment of the device for adjusting the balance of the hoist has certain advantages but also certain disadvantages.
  • the actuation of the deformation means 94 formed here also by a single element, can be performed while leaving the fixing screw 32 in place in its hole 98.
  • the screw of setting 94 is massive and therefore less expensive than the screw 34 of the first embodiment.
  • this embodiment is more bulky and requires in particular dimensions of the base 18B greater than the dimensions of the base 18 of the first embodiment.
  • the adjusting screw 34 associated with the clamping screw 32 can be replaced by a single screw similar to the screw 94 shown in FIG. figure 10 .
  • the bridge 64 will be machined in such a way that the adjustment of the balance of the balance always and absolutely requires unscrewing the adjusting screw 94 so as to move the bearing 74 away from the bearing 76.
  • the head 36 of the screw 94 will remain in abutment against the surface of the plate 14 by the mechanical strength due to the deformation of the bridge 64.
  • the section of the intermediate portion 84 will be selected so as to allow deformation of this area by unscrewing the adjusting screw 94 while by guaranteeing sufficient force exerted on the head 36 to hold it pressed against the plate 14 when the screw 30 is tightened.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Electromechanical Clocks (AREA)
  • Vibration Prevention Devices (AREA)
  • Pinball Game Machines (AREA)
  • Toys (AREA)
  • Shutters For Cameras (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

The time piece has a balance bridge (4) with a base (18) associated to a balance bridge deformation unit formed of an adjusting screw (34). The screw is adjusted to vary the distance between the base and a main plate (14) by the deformation of a plate (10) at level of zones (22, 24) of less mechanical resistance, which are provided on either side of a central part (20) of the plate (10) to localize deformations generated by the screw. The central part where the bearing is arranged moves relative to the main plate to adjust the shake in the balance when the plate (10) is deformed.

Description

La présente invention concerne une pièce d'horlogerie mécanique comprenant des moyens de réglage de l'ébat d'un mobile tournant, en particulier de l'ébat d'un balancier.The present invention relates to a mechanical timepiece comprising means for adjusting the play of a rotating wheel, in particular the play of a balance wheel.

On connaît du document du brevet CH 368 752 un dispositif de réglage de l'ébat axial de l'axe d'un balancier par déformation élastique du coq. Le coq est formé d'une base fixée sur une platine et d'une planche dans laquelle est agencée un des deux paliers dans lesquels pivote l'axe du balancier. A l'extrémité libre de la planche est prévue une vis de réglage ayant sa tête du côté du balancier. Cette vis est actionnable depuis le dessus de la planche et la tête est engagée dans une gorge d'une deuxième vis adjacente servant de support à la vis de réglage. En actionnant cette vis de réglage, on déforme la planche du coq en variant la hauteur de l'extrémité libre de celle-ci. La planche présente une épaisseur sensiblement constante avec une légère surépaisseur du côté de la base du coq.Patent document is known CH 368 752 a device for adjusting the axial drop of the axis of a rocker by elastic deformation of the cock. The rooster is formed of a base fixed on a plate and a board in which is arranged one of the two bearings in which pivots the axis of the balance. At the free end of the board is provided a set screw having its head on the side of the balance. This screw is operable from the top of the board and the head is engaged in a groove of a second adjacent screw for supporting the adjusting screw. By actuating this adjustment screw, one deforms the board of the rooster by varying the height of the free end thereof. The board has a substantially constant thickness with a slight extra thickness on the side of the base of the cock.

On observe qu'une déformation de la planche du dispositif décrit ci-dessus engendre des contraintes au niveau du palier agencé dans la planche. En effet, ce palier est situé dans une région où les tensions dues à la déformation de la planche au moyen de la vis de réglage sont relativement importantes. Ceci engendre également des tensions dans les éléments associés au palier et peut être néfaste à la rotation libre de l'axe du balancier.It is observed that a deformation of the board of the device described above causes constraints at the level of the bearing arranged in the board. Indeed, this bearing is located in a region where the tensions due to the deformation of the board by means of the adjusting screw are relatively large. This also causes tensions in the elements associated with the bearing and can be detrimental to the free rotation of the axis of the balance.

On connaît également du document de brevet FR 1.545.748 un dispositif de réglage de l'ébat d'un balancier dans une pièce d'horlogerie. Le coq est formé ici par une base fixée à une platine et par une planche dans la partie centrale de laquelle est agencé le palier supérieur pour l'axe du balancier et finalement par une partie terminale prolongeant ladite planche. Cette partie terminale présente une surface inférieure inclinée. Un disque agencé de manière excentrée sur une goupille est prévue pour varier la auteur de la partie terminale relativement à la platine. Le disque excentré est prévu en appui contre la surface inférieure inclinée de sorte que l'actionnement de la goupille sur laquelle il est monté engendre un déplacement en hauteur de la partie terminale. Il est résulte une déformation de la planche du coq; ce qui permet d'ajuster l'ébat du balancier. Comme dans le document précédent, la déformation de la planche du coq engendre des tensions relativement importantes dans la partie centrale de cette planche où est agencé le palier. Ces tensions sont néfastes pour le palier et les divers éléments qui lui sont associés. Dans le cas présent, la déformation est essentiellement localisée dans la partie centrale étant donné que celle-ci présente un évidemment inférieur prévu dans la région superposée au spiral. Ceci engendre une certaine courbure de la planche dans cette région centrale; ce qui est néfaste pour la rotation libre du balancier.Patent document is also known FR 1.545.748 a device for adjusting the play of a balance wheel in a timepiece. The cock is formed here by a base fixed to a plate and a board in the central part of which is arranged the upper bearing for the axis of the balance and finally by an end portion extending said board. This end portion has an inclined lower surface. A disk arranged eccentrically on a pin is provided to vary the author of the terminal portion relative to the plate. The eccentric disc is provided in abutment against the inclined lower surface so that the actuation of the pin on which it is mounted causes a displacement in height of the end portion. It results in a deformation of the rooster's board; which makes it possible to adjust the balance of the pendulum. As in the previous document, the deformation of the board of the rooster generates relatively large tensions in the central part of this board where is arranged the bearing. These tensions are harmful for the bearing and the various elements associated with it. In this case, the deformation is essentially localized in the central part being given that it has a lower obviously provided in the region superimposed on the spiral. This causes a certain curvature of the board in this central region; which is harmful for the free rotation of the pendulum.

On connaît encore un tel dispositif du document de brevet CH 503 308 qui a pour objet un dispositif de réglage de la position en hauteur d'un pont d'un mouvement d'horlogerie, notamment du coq. Le coq est formé d'une base et d'une planche. La planche présente à l'extrémité opposée à la base une vis qui repose sur un pont ou la platine du mouvement. En actionnant cette vis, on varie la hauteur relative de l'extrémité de la planche. Ceci engendre une déformation de cette planche et donc également une variation de la position du palier agencé dans une partie centrale de la planche. On règle ainsi l'ébat du balancier. La vis de réglage est maintenue dans une position définie par une deuxième vis dont la tête appuie sur la tête de la vis de réglage. L'enseignement de ce document est similaire à celui des deux documents cités ci-avant. Il présente les mêmes inconvénients.Such a device of the patent document is still known CH 503 308 which relates to a device for adjusting the height position of a bridge of a clockwork movement, including the rooster. The rooster is formed of a base and a board. The board has at the end opposite the base a screw which rests on a bridge or the plate of the movement. By actuating this screw, the relative height of the end of the board is varied. This causes a deformation of this board and therefore also a variation of the position of the bearing arranged in a central portion of the board. One thus regulates the frog of the pendulum. The adjusting screw is held in a position defined by a second screw whose head presses on the head of the adjusting screw. The teaching of this document is similar to that of the two documents cited above. It has the same disadvantages.

Un but de la présente invention est de proposer un dispositif de réglage de l'ébat d'un mobile tournant dans une pièce d'horlogerie, en particulier d'un balancier, qui soit relativement peu onéreux et permettant de régler l'ébat du mobile tournant de manière efficace et rapide, par une déformation élastique du pont muni du palier supérieur dans lequel pivote l'axe de ce mobile tournant, mais en limitant les tensions de déformation dans la région où est agencé ce palier supérieur.An object of the present invention is to provide a device for adjusting the play of a mobile rotating in a timepiece, in particular a balance, which is relatively inexpensive and to adjust the frolicking of the mobile rotating efficiently and rapidly, by an elastic deformation of the bridge provided with the upper bearing in which pivots the axis of the rotating wheel, but limiting the deformation voltages in the region where the upper bearing is arranged.

A cet effet la présente invention comme défini par la revendication 1 concerne une pièce d'horlogerie mécanique équipée d'un mobile tournant qui comprend un axe ou arbre dont une extrémité pivote dans un premier palier porté par un pont et l'autre extrémité pivote dans un second palier agencé dans une platine, cette pièce d'horlogerie comprenant des moyens de réglage de l'ébat de cet axe ou arbre du mobile tournant Ces moyens de réglage sont formés d'une part par un moyen de fixation d'une première partie du pont à la platine qui laisse cette première partie dans une position fixe relativement à la platine et, d'autre part, par un moyen de déformation du pont qui est agencé pour varier la position relative entre une deuxième partie de ce pont et la platine en déformant ce pont, ces première et deuxième parties étant prévues pour qu'un actionnement du moyen de déformation engendre une variation de la position du premier palier relativement au deuxième palier. Cette pièce d'horlogerie comprend au moins une zone de moindre résistance mécanique située soit entre la zone du premier palier et l'une des deux parties, soit entre lesdites deux parties et hors de la zone dudit premier palier et définissant une zone de déformation localisée ou une articulation flexible entre ces première et deuxième parties. Dans une variante préférée, cette zone de déformation localisée est définie par une rainure transversale effectuée du côté de la face inférieure de la planche du pont.For this purpose the present invention as defined by claim 1 relates to a mechanical timepiece equipped with a rotating wheel which comprises an axis or shaft whose one end pivots in a first bearing carried by a bridge and the other end pivots in a second bearing arranged in a plate, this timepiece comprising means for adjusting the frust of this axis or shaft of the rotating mobile device. These adjustment means are formed on the one hand by a means for fixing a first part from the bridge to the plate which leaves this first part in a fixed position relative to the plate and, secondly, by means of deformation of the bridge which is arranged to vary the relative position between a second part of this bridge and the plate by deforming this bridge, these first and second parts being provided so that an actuation of the deformation means causes a variation of the position of the first bearing relative to the second blade. st. This timepiece comprises at least one zone of least mechanical resistance located either between the zone of the first bearing and one of the two parts, or between said two parts and outside the zone of said first bearing and defining a localized deformation zone. or a flexible articulation between these first and second parts. In a preferred variant, this deformation zone localized is defined by a transverse groove made on the side of the underside of the deck board.

Dans un mode de réalisation particulier, le pont est double et les première et deuxième parties dont définies par les deux bases du pont. Dans ce dernier cas, il est prévu deux zones de moindre résistance mécanique définies par deux rainures transversales agencées respectivement aux deux extrémités de la planche, c'est-à-dire à la périphérie immédiate des deux bases.In a particular embodiment, the bridge is double and the first and second parts of which defined by the two bases of the bridge. In the latter case, there are two zones of lesser mechanical strength defined by two transverse grooves respectively arranged at both ends of the board, that is to say at the immediate periphery of the two bases.

La présente invention sera décrite ci-après de manière détaillée à l'aide du dessin annexé, donné à titre d'exemples nullement limitatifs, dans lequel :

  • la figure 1 est une vue partielle en perspective d'un mouvement horloger ayant un pont de balancier équipé d'un dispositif de réglage de l'ébat du balancier selon la présente invention;
  • la figure 2 est une vue en perspective du pont de balancier du mode de réalisation représenté à la figure 1;
  • les figures 3 à 6 sont diverses représentations du dispositif de réglage de l'ébat du balancier équipant le mouvement horloger de la figure 1;
  • la figure 7 est une vue latérale d'un pont de balancier semblable à celui de la figure 1 et dans un état déformé;
  • la figure 8 est une vue latérale d'un pont de balancier selon une réalisation ne faisant pas l'objet de l'invention;
  • la figure 9 représente un deuxième mode de réalisation d'un pont de balancier équipé d'un dispositif de réglage de l'ébat du balancier selon l'invention; et
  • la figure 10 montre une variante de réalisation du dispositif de réglage selon invention.
The present invention will be described hereinafter in detail with the aid of the appended drawing, given as non-limiting examples, in which:
  • the figure 1 is a partial perspective view of a watch movement having a pendulum bridge equipped with a balance of the equilibrium adjusting device according to the present invention;
  • the figure 2 is a perspective view of the balance bridge of the embodiment shown in FIG. figure 1 ;
  • the Figures 3 to 6 are various representations of the device for adjusting the equilibrium of the pendulum equipping the watch movement of the figure 1 ;
  • the figure 7 is a side view of a pendulum bridge similar to that of the figure 1 and in a deformed state;
  • the figure 8 is a side view of a balance bridge according to an embodiment not subject of the invention;
  • the figure 9 represents a second embodiment of a balance bridge equipped with a device for adjusting the balance of the equilibrium according to the invention; and
  • the figure 10 shows an alternative embodiment of the adjustment device according to the invention.

A la figure 1 est représenté un premier mode de réalisation d'une pièce d'horlogerie mécanique 2 équipée d'un mobile tournant et comprenant des moyens de réglage de l'ébat de ce mobile tournant selon la présente invention.To the figure 1 is represented a first embodiment of a mechanical timepiece 2 equipped with a rotating wheel and comprising means for adjusting the fret of the rotating wheel according to the present invention.

Le premier mode de réalisation de l'invention sera décrit ci-après à l'aide des figures 1 à 7. Le pont dans ce mode de réalisation est un pont de balancier 4 et le mobile tournant est un balancier 6. De manière classique, le balancier 6 comprend un axe dont une première extrémité pivote dans un premier palier porté par la planche 10 du pont de balancier. Le premier palier est agencé dans une ouverture d'un porte-piton 8 avec un dispositif pare-choc connu de l'homme du métier. Le porte-piton 8 repose sur l'assise centrale 12 du pont 4. La deuxième extrémité de l'axe du balancier pivote dans un second palier agencé dans une platine 14 de la pièce d'horlogerie 2.The first embodiment of the invention will be described below using the Figures 1 to 7 . The bridge in this embodiment is a pendulum bridge 4 and the rotating mobile is a pendulum 6. In a conventional manner, the balance 6 comprises an axis whose first end pivots in a first bearing carried by the board 10 of the balance bridge . The first bearing is arranged in an opening of a bolt carrier 8 with a bumper device known to those skilled in the art. The bolt carrier 8 rests on the central seat 12 of the bridge 4. The second end of the axis of the balance pivots in a second bearing arranged in a plate 14 of the timepiece 2.

Le pont de balancier 4 est un pont double formé de deux bases 16 et 18 agencées respectivement d'un côté et de l'autre de la planche 10 et donc du premier palier agencé dans la partie centrale 20 de ce pont. L'assise 12 pour le porte-piton présente dans cette variante une épaisseur inférieure à celle de la planche 10 dans ses deux parties directement adjacentes à cette assise. Selon invention, le pont 4 comprend deux zones de moindre résistance mécanique 22 et 24 agencées respectivement aux deux régions d'extrémité de la planche 10, c'est-à-dire respectivement entre les deux bases 16 et 18 et la partie centrale 20 portant le premier palier pour l'axe du balancier. Ces deux zones de moindre résistance mécanique sont ici formées chacune par une zone transversale définie par une rainure d'une certaine largeur. Nous reviendrons sur la fonction de ces zones de moindre résistance mécanique par la suite.The balance bridge 4 is a double bridge formed of two bases 16 and 18 respectively arranged on one side and the other of the board 10 and therefore the first bearing arranged in the central portion 20 of this bridge. The seat 12 for the bolt carrier has in this variant a thickness less than that of the board 10 in its two parts directly adjacent to this seat. According to the invention, the bridge 4 comprises two areas of least mechanical strength 22 and 24 respectively arranged at the two end regions of the board 10, that is to say respectively between the two bases 16 and 18 and the central portion 20 bearing the first bearing for the axis of the balance. These two areas of least mechanical strength are here each formed by a transverse area defined by a groove of a certain width. We will return to the function of these areas of least mechanical resistance thereafter.

D'une part il est prévu une vis de fixation rigide 30 d'une première partie 16 du pont 4 à la platine 14, cette première partie étant définie dans ce mode de réalisation par la base 16. D'autre part, la deuxième base 18 du pont 4 définit une deuxième partie fixée à ladite platine au moyen d'une vis de serrage 32. Cette deuxième partie 18 est associée à un moyen 34 de déformation élastique du pont 4. Ce moyen de déformation est constitué ici par une vis 34 de diamètre relativement grand et percée en son centre. Cette vis de réglage 34 comprend une tête plate 36 munie d'une fente permettant de visser cette vis depuis la partie inférieure du pont 4. La vis de réglage 34 comprend en outre un cylindre 38 présentant un filetage extérieur fin de manière à pouvoir varier finement la distance entre la surface externe 37 de la tête 36 et la surface inférieure 5 du pont 4. Le trou 40 qui traverse la vis 34 présente un diamètre supérieure à celui de la vis de serrage 32, de manière que celle-ci peut être introduite librement dans ce trou traversant 40.On the one hand there is provided a rigid fixing screw 30 of a first portion 16 of the bridge 4 to the plate 14, this first part being defined in this embodiment by the base 16. On the other hand, the second base 18 of the bridge 4 defines a second portion fixed to said plate by means of a clamping screw 32. This second portion 18 is associated with a means 34 of elastic deformation of the bridge 4. This means of deformation is constituted here by a screw 34 of relatively large diameter and pierced in the center. This adjusting screw 34 comprises a flat head 36 provided with a slot for screwing this screw from the lower part of the bridge 4. The adjusting screw 34 further comprises a cylinder 38 having a fine external thread so as to be able to vary finely the distance between the outer surface 37 of the head 36 and the lower surface 5 of the bridge 4. The hole 40 which passes through the screw 34 has a diameter greater than that of the clamping screw 32, so that it can be introduced freely in this through hole 40.

La vis 34 est vissée dans un trou 42 traversant la base 18 du pont 4 Le trou 42 présente un élargissement dans la partie supérieure de la base 18 avec une surface annulaire sensiblement plane et servant de butée à la tête de la vis de serrage 32. Cette vis 32 est vissée à son extrémité inférieure dans la platine 14 pour assurer la fixation de la base 18 à la platine 14.The screw 34 is screwed into a hole 42 passing through the base 18 of the bridge 4 The hole 42 has an enlargement in the upper part of the base 18 with a substantially flat annular surface and serving as a stop at the head of the clamping screw 32. This screw 32 is screwed at its lower end into the plate 14 to secure the base 18 to the plate 14.

La vis réglage 34 présente à son extrémité supérieure opposée à la tête 36 une partie annulaire supérieure présentant deux fentes 44 diamétralement opposées et agencées pour permettre d'y insérer un tournevis pour tourner cette vis de réglage 34 depuis la face supérieure 46 du pont en l'absence de la vis de serrage 32, comme cela ressort en particulier des figures 4 et 6. Un ressort de friction ayant la forme d'une rondelle incurvée 48 est agencé entre la tête 36 de la vis 34 et la surface inférieure 5 de la base 18. Pour assurer un positionnement de cette base 18 dans le plan général du mouvement horloger 2, une goupille de positionnement 50 est prévue.The adjusting screw 34 has at its upper end opposite to the head 36 an upper annular portion having two diametrically opposed slots 44 and arranged to allow a screwdriver to be inserted to turn this adjusting screw 34 from the upper face 46 of the bridge in the opposite direction. absence of the clamping screw 32, as is apparent in particular from figures 4 and 6 . A friction spring in the form of a curved washer 48 is arranged between the head 36 of the screw 34 and the bottom surface 5 of the base 18. To ensure positioning of this base 18 in the general plane of the watch movement 2, a positioning pin 50 is provided.

En tournant la vis de réglage 34, on varie la position relative entre la base 18 et la platine 14 étant donné que la surface inférieure 37 de la tête 36 repose sur cette platine. Pour effectuer le réglage de la hauteur de la base 18, on enlèvera la vis de serrage 32 de manière à pouvoir effectuer ce réglage depuis la surface supérieure 46 du pont 4 par l'ouverture traversante 42. Pour ce faire, l'horloger maintiendra par exemple à l'aide d'un outil approprié la vis 34 en appui contre la platine 14 si cela s'avère nécessaire Etant donné que la base 16 est fixée à la platine dans une position invariable, un actionnement de la vis de réglage 34 engendre une déformation du pont 4, comme cela est représenté à la figure 7. Ainsi, en actionnant la vis de réglage 34, on varie la distance entre la base 18 et la platine 14 et on déforme la planche 10 de sorte que la zone centrale 20, où est situé le palier supérieur pour l'axe du balancier, subit également un déplacement permettant ainsi le réglage de l'ébat de ce balancier.By turning the adjustment screw 34, the relative position between the base 18 and the plate 14 is varied since the lower surface 37 of the head 36 rests on this plate. To adjust the height of the base 18, the clamping screw 32 will be removed so as to be able to make this adjustment from the upper surface 46 of the bridge 4 through the through opening 42. To do this, the watchmaker will maintain by example using a suitable tool the screw 34 bearing against the plate 14 if necessary Since the base 16 is fixed to the plate in an invariable position, an actuation of the adjusting screw 34 generates a deformation of the bridge 4, as shown in FIG. figure 7 . Thus, by actuating the adjustment screw 34, the distance between the base 18 and the plate 14 is varied and the plate 10 is deformed so that the central zone 20, where the upper bearing for the axis of the balance is located, is subjected to also a displacement thus allowing the adjustment of the play of this balance.

Comme déjà décrit précédemment, la planche 10 comprend à ses deux parties d'extrémité deux zones 22 et 24 de moindre résistance mécanique qui définissent chacune une zone de déformation localisée ou articulation flexible entre les deux bases 16 et 18. Ces zones de déformation localisée sont obtenues par l'usinage de deux rainures du côté inférieur de la planche 10 qui définissent des zones transversales du pont 4 ayant une moindre épaisseur que les deux régions adjacentes 54 et 56, respectivement 55 et 57. La déformation du pont est ainsi localisée essentiellement dans les deux zones transversales 22 et 24 de sorte que les bases 16 et 18 subissent quasi aucune tension due à la déformation et la partie centrale 20 de la planche 10 demeure sensiblement plane. De plus, ces zones 22 et 24 permettent de diminuer globalement les tensions engendrées dans le pont de balancier 4 lorsque la base 18 est déplacée en hauteur relativement à la base 16. l'ajustement de l'ébat du balancier peut engendrer une certaine inclinaison de la partie centrale 20 de la planche 10, mais cette inclinaison demeure faible.As already described above, the board 10 comprises at its two end portions two zones 22 and 24 of least mechanical strength which each define a zone of localized deformation or flexible articulation between the two bases 16 and 18. These zones of localized deformation are obtained by machining two grooves on the lower side of the board 10 which define transverse areas of the bridge 4 having a smaller thickness than the two adjacent regions 54 and 56, respectively 55 and 57. The deformation of the bridge is thus located essentially in the two transverse zones 22 and 24 so that the bases 16 and 18 undergo almost no tension due to the deformation and the central portion 20 of the board 10 remains substantially flat. In addition, these zones 22 and 24 make it possible to reduce overall the tensions generated in the balance bridge 4 when the base 18 is displaced in height relative to the base 16. The adjustment of the balance of the balance can generate a certain inclination of the central portion 20 of the board 10, but this inclination remains low.

Grâce à l'invention, l'assise 12 du porte-piton demeure plate et soumise à relativement peu de tension. On remarquera que l'agencement des zones de moindre épaisseur 22 et 24 est d'autant plus nécessaire que l'assise 12 du porte-piton est formée par un usinage de la planche 10. Ainsi, l'assise 12 présente une épaisseur moindre que les régions périphériques 54 et 55 à cette assise 12, ce qui rend la zone centrale 20 plus facilement déformable. De ce fait, dans le dispositif représenté à la figure 8, en absence des zones transversales selon l'invention, le pont 4A présente sensiblement une déformation en S, la déformation de la planche 10A étant située substantiellement au niveau de sa partie centrale 20A. Cette partie centrale subit alors fortement les contraintes de déformation. Ceci est néfaste pour le palier et la rotation du mobile dont une extrémité pivote dans ce palier. L'homme du métier pourra concevoir d'autres ponts et d'autres moyens pour réduire les tensions internes dans la planche du pont déformée par les moyens de réglage de l'ébat du balancier.Thanks to the invention, the seat 12 of the bolt carrier remains flat and subjected to relatively little tension. It will be noted that the arrangement of the zones of lesser thickness 22 and 24 is all the more necessary as the seat 12 of the peg carrier is formed by a machining of the board 10. Thus, the seat 12 has a thickness less than the peripheral regions 54 and 55 at this seat 12, which makes the central zone 20 more easily deformable. As a result, in the device shown in figure 8 , in the absence of the transverse zones according to the invention, the bridge 4A has substantially an S-shaped deformation, the deformation of the plate 10A being located substantially at its central portion 20A. This central part then undergoes strongly deformation stresses. This is harmful for the bearing and the rotation mobile whose end rotates in this bearing. Those skilled in the art may design other bridges and other means to reduce internal stresses in the board of the deformed bridge by the balance of the equilibrium control means.

Le dispositif de réglage de l'ébat selon la présente invention est relativement simple et donc peu onéreux. De plus, l'agencement coaxial de la vis de serrage 32 et de la vis de réglage 34 n'augmente pas l'encombrement du pont.The frost control device according to the present invention is relatively simple and therefore inexpensive. In addition, the coaxial arrangement of the clamping screw 32 and the adjusting screw 34 does not increase the overall size of the bridge.

Le montage du dispositif de réglage de l'ébat est effectué aisément en vissant simplement la vis de réglage 34 depuis la face inférieure 5 du pont 4 jusqu'à ce que sa tête soit environ à une certaine hauteur définie. Ensuite, le pont peut être assemblé à la platine avec le balancier monté dans les deux paliers qui lui sont associés. Ensuite, l'ébat du balancier (ou d'un autre mobile tournant) peut être réglé simplement en tournant la vis 34 à l'aide de la fente 44 prévue à son extrémité supérieure opposée à la tête 36, cette extrémité supérieure étant accessible par un outil depuis la face supérieure 46 du pont au travers de l'ouverture 42 traversant la base 18. Une fois le réglage effectué, la vis 32 est insérée dans le trou traversant 40 de la vis de réglage 34 et serrée de manière à fixer rigidement la base 18 à la platine 14. La rondelle élastique 48 assure un maintien de la vis de réglage 34 dans la position prévue. Une fois l'ajustement de la distance entre les deux paliers finement effectué au moyen de la vis de réglage 34, le système de réglage de la hauteur du pont 4 est masqué et le pont est solidement fixé à la platine.The mounting of the lightening adjustment device is easily performed by simply screwing the adjusting screw 34 from the lower face 5 of the bridge 4 until its head is about a certain height. Then, the bridge can be assembled to the plate with the rocker mounted in the two bearings associated with it. Then, the equilibrium of the balance (or of another mobile rotating) can be adjusted simply by turning the screw 34 with the slot 44 provided at its upper end opposite the head 36, this upper end being accessible by a tool from the upper face 46 of the bridge through the opening 42 through the base 18. Once the adjustment is made, the screw 32 is inserted into the through hole 40 of the adjusting screw 34 and tightened so as to rigidly fix the base 18 to the plate 14. The spring washer 48 maintains a set screw 34 in the intended position. Once the adjustment of the distance between the two bearings is finely carried out by means of the adjustment screw 34, the height adjustment system of the bridge 4 is masked and the bridge is firmly fixed to the plate.

On remarquera que la présente invention peut également s'appliquer à un mouvement horloger équipé d'un tourbillon et dans lequel l'ébat de la cage du tourbillon est ajusté à l'aide du dispositif de la présente invention associé au pont du tourbillon portant un des deux paliers dans lequel pivote la cage du tourbillon.It should be noted that the present invention can also be applied to a watch movement equipped with a vortex and in which the vortex of the tourbillon cage is adjusted by means of the device of the present invention associated with the tourbillon bridge carrying a two bearings in which rotates the vortex cage.

A la figure 9 est représenté schématiquement en coupe un deuxième mode de réalisation d'une pièce d'horlogerie selon la présente invention.To the figure 9 is schematically shown in section a second embodiment of a timepiece according to the present invention.

Dans ce mode de réalisation, le pont de balancier 64 est du type simple, c'est-à-dire avec une base 68 agencée à une extrémité de la planche 70 qui présente à son autre extrémité libre 72 un premier palier 74 dans lequel pivote l'axe 76 du balancier 6. La seconde extrémité de l'axe 76 pivote dans un palier 78 agencé dans la platine 14. Les paliers 74 et 78 sont représentés de manière schématique à la figure 9. De manière classique, le palier 74 est généralement associé à un dispositif pare-choc connu de l'homme du métier.In this embodiment, the balance bridge 64 is of the simple type, that is to say with a base 68 arranged at one end of the board 70 which has at its other free end 72 a first bearing 74 in which pivots the axis 76 of the balance 6. The second end of the axis 76 pivots in a bearing 78 arranged in the plate 14. The bearings 74 and 78 are shown schematically in the figure 9 . Conventionally, the bearing 74 is generally associated with a bumper device known to those skilled in the art.

Les moyens de réglage de l'ébat du balancier 6 sont obtenus, selon le principe de la présente invention, par déformation du pont 64 engendrant une variation de l'inclination de la planche 70 et par conséquent une variation de la distance entre les paliers 74 et 78. Pour ce faire, la base 68 comprend deux parties distinctes 80 et 82 séparées par une zone intermédiaire 84 définissant une zone transversale de moindre résistance mécanique permettant une déformation localisée entre les parties 80 et 82 de la base. La partie 80 qui est la plus éloignée du palier 74 est fixée rigidement à la platine 14 au moyen d'une vis de fixation 30. Cette première partie 80 est maintenue dans une position fixe et invariable relativement à la platine 14 lorsque la vis 30 est serrée. La deuxième partie 82 est équipée d'un dispositif permettant de varier la position de cette partie 82 relativement à la platine 14, ce qui engendre une déformation du pont en particulier dans la région intermédiaire 84. Ainsi la position relative entre les deux parties 80 et 82 du pont 64 peut être variée, ce qui engendre un déplacement de la planche 70 et en particulier du palier 74 relativement à la platine 14. Le moyen de déformation du pont agissant sur la deuxième partie 82 est semblable à celui décrit dans le cadre du premier mode de réalisation. Il ne sera donc pas à nouveau décrit ici.The adjustment means of the balance wheel 6 are obtained, according to the principle of the present invention, by deformation of the bridge 64 causing a variation of the inclination of the board 70 and therefore a variation of the distance between the bearings 74 and 78. To do this, the base 68 comprises two distinct parts 80 and 82 separated by an intermediate zone 84 defining a transverse zone of lower mechanical strength allowing localized deformation between the parts 80 and 82 of the base. The portion 80 which is furthest from the bearing 74 is fixed rigidly to the plate 14 by means of a fixing screw 30. This first part 80 is held in a fixed and invariable position relative to the plate 14 when the screw 30 is tight. The second portion 82 is equipped with a device for varying the position of this portion 82 relative to the plate 14, which causes a deformation of the bridge, especially in the intermediate region 84. Thus the relative position between the two parts 80 and 82 of the bridge 64 can be varied, which causes a displacement of the board 70 and in particular the bearing 74 relative to the plate 14. The deformation means of the bridge acting on the second part 82 is similar to that described in the context of first embodiment. It will not be described again here.

A la figure 10 est représentée un autre mode de réalisation du moyen de déformation du pont 4B. Cette alternative peut s'appliquer aux deux modes de réalisation d'une pièce d'horlogerie selon l'invention décrits ci-avant. Cependant, le mode de réalisation représenté à la figure 10 correspond au cas d'un pont double selon le premier mode de réalisation représenté à la figure 1. Le pont 4B comprend donc une base 18B similaire à la base 18 du mode de réalisation de la figure 1.To the figure 10 another embodiment of the deformation means of the bridge 4B is shown. This alternative can be applied to the two embodiments of a timepiece according to the invention described above. However, the embodiment shown in figure 10 corresponds to the case of a double bridge according to the first embodiment shown in FIG. figure 1 . The bridge 4B therefore comprises a base 18B similar to the base 18 of the embodiment of the figure 1 .

Le mode de réalisation de la figure 10 se distingue essentiellement de celui décrit à l'aide des figures précédentes par le fait que la vis de fixation de la base 18B à la platine 14 n'est pas coaxiale à la vis 94 de réglage de l'ébat du balancier. En effet, la vis 94, servant à la déformation du pont 4B et à la variation de la position relative entre la base 18B et la platine 14, est agencée entre la vis de serrage 32 et la planche 10 du pont 4B. On notera de suite que cette vis 94 peut également être agencée de l'autre côté de la vis 32. La vis de réglage 94 se distingue de la vis 34 des autres modes de réalisation par le fait qu'elle ne présente pas de trou traversant et par le fait que son extrémité supérieur 96 est visible et accessible depuis la face supérieure 46 du pont 4B alors que la vis de serrage 32 est mise en place dans le trou traversant 98 effectué dans la base 18B. L'extrémité 96 de la vis 94 présente une fente 44B permettant de tourner cette vis 94 et donc de varier la distance entre la base 18B et la platine 14. Pour augmenter cette distance, l'horloger desserrera évidemment la vis 32.The embodiment of the figure 10 differs essentially from that described with the aid of the preceding figures in that the fixing screw of the base 18B to the plate 14 is not coaxial with the screw 94 for adjusting the balance of the balance. Indeed, the screw 94, used for the deformation of the bridge 4B and the variation of the relative position between the base 18B and the plate 14, is arranged between the clamping screw 32 and the board 10 of the bridge 4B. Note that this screw 94 can also be arranged on the other side of the screw 32. The adjustment screw 94 differs from the screw 34 of the other embodiments in that it does not have a through hole and in that its upper end 96 is visible and accessible from the upper face 46 of the bridge 4B while the clamping screw 32 is placed in the through hole 98 made in the base 18B. The end 96 of the screw 94 has a slot 44B for rotating the screw 94 and thus to vary the distance between the base 18B and the plate 14. To increase this distance, the watchmaker will obviously loosen the screw 32.

Ce dernier mode de réalisation du dispositif de réglage de l'ébat du balancier présente certains avantages mais également certains inconvénients. L'actionnement du moyen de déformation 94, formé ici également par un seul élément, peut être effectué tout en laissant la vis de fixation 32 en place dans son trou 98. La vis de réglage 94 est massive et donc moins onéreuse que la vis 34 du premier mode de réalisation. Par contre, ce mode de réalisation est plus encombrant et nécessite notamment des dimensions de la base 18B supérieures aux dimensions de la base 18 du premier mode de réalisation.This last embodiment of the device for adjusting the balance of the hoist has certain advantages but also certain disadvantages. The actuation of the deformation means 94, formed here also by a single element, can be performed while leaving the fixing screw 32 in place in its hole 98. The screw of setting 94 is massive and therefore less expensive than the screw 34 of the first embodiment. On the other hand, this embodiment is more bulky and requires in particular dimensions of the base 18B greater than the dimensions of the base 18 of the first embodiment.

Finalement, on mentionnera que dans un autre mode de réalisation similaire au deuxième mode représenté à la figure 9, la vis de réglage 34 associée à la vis de serrage 32 peut être remplacée par une seule vis semblable à la vis 94 représentée à la figure 10. Dans ce cas, le pont 64 sera usiné de telle manière que le réglage de l'ébat du balancier nécessite toujours et impérativement de dévisser la vis de réglage 94 de manière à éloigner le palier 74 du palier 76. Ainsi, la tête 36 de la vis 94 restera en appui contre la surface de la platine 14 par la résistance mécanique due à la déformation du pont 64. La section de la partie intermédiaire 84 sera sélectionnée de manière à permettre une déformation de cette zone en dévissant la vis de réglage 94 tout en garantissant une force suffisante exercée sur la tête 36 pour la maintenir plaquée contre la platine 14 lorsque la vis 30 est serrée.Finally, it will be mentioned that in another embodiment similar to the second embodiment shown in FIG. figure 9 , the adjusting screw 34 associated with the clamping screw 32 can be replaced by a single screw similar to the screw 94 shown in FIG. figure 10 . In this case, the bridge 64 will be machined in such a way that the adjustment of the balance of the balance always and absolutely requires unscrewing the adjusting screw 94 so as to move the bearing 74 away from the bearing 76. Thus, the head 36 of the screw 94 will remain in abutment against the surface of the plate 14 by the mechanical strength due to the deformation of the bridge 64. The section of the intermediate portion 84 will be selected so as to allow deformation of this area by unscrewing the adjusting screw 94 while by guaranteeing sufficient force exerted on the head 36 to hold it pressed against the plate 14 when the screw 30 is tightened.

Claims (7)

  1. Mechanical timepiece fitted with a rotating part (6), which includes an arbour one end of which pivots in a first bearing arranged in a zone (20, 72) of a bar (4; 4A, 4B: 64) and the other end of which pivots in a second bearing arranged in a bottom plate (14), said timepiece including means for adjusting the shake of said rotating part, which are formed on the one hand by means (30) for securing a first part (16; 80) of said bar to the bottom plate, which leaves said first part in a fixed relation relative to said bottom plate, and on the other hand by means (34;94) for deforming the bar which are arranged for varying the relative position between a second part (18: 18B; 82) of said bar and said bottom plate by deforming said bar, said first and second parts of said bar being provided such that actuating said bar deformation means generates a variation in the distance between said first bearing and said second bearing, characterized in that it includes at least one zone (22, 24; 84) of less mechanical resistance either between the zone (20) of the first bearing and one of said two parts (16, 18; 18b) or between said two parts (80, 82) outside of the zone (72) of the first bearing and defining a localised deformation zone or a flexible hinge between these two parts.
  2. Timepiece according to claim 1, characterized in that said zone of less mechanical resistance is formed by a transverse zone of said bar whose thickness is smaller than the two adjacent regions (54, 56; 55, 57) respectively located on either side of said transverse zone.
  3. Timepiece according to claim 1 or 2, characterized in that said first and second parts are respectively located on one side and the other side of said first bearing, and in that two zones of less mechanical resistance are provided, respectively located between the first part and the first bearing and the second part and the second bearing.
  4. Timepiece according to claim 3, characterized in that said bar comprises a plate (10) in which said first bearing and said two zones of less mechanical resistance are arranged.
  5. Timepiece according to any of the preceding claims, characterized in that said means for deforming said bar are arranged to be actuated by the variation in the position of a single element.
  6. Timepiece according to any of the preceding claims, characterized in that said deformation means are formed by a screw (34) for adjusting the distance between said second part of said bar and said bottom plate, said adjusting screw having a first end (36) abutting against said bottom plate and the second end thereof accessible from the top face (46) of said bar opposite to said bottom plate, the second end having a shape adapted to a tool allowing said regulating screw to be rotated to vary the distance between the second part of the bar and the bottom plate.
  7. Timepiece according to any of the preceding claims, characterized in that said bar is a balance bar or tourbillon bar and said rotating part is a balance or a tourbillon carriage.
EP05028554A 2005-12-28 2005-12-28 Mechanical timepiece provided with means for adjusting the backlash of a wheel Active EP1804143B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE602005014798T DE602005014798D1 (en) 2005-12-28 2005-12-28 Mechanical clock with device for adjusting the game of a rotating part
AT05028554T ATE433139T1 (en) 2005-12-28 2005-12-28 MECHANICAL CLOCK WITH DEVICE FOR ADJUSTING THE PLAY OF A ROTATED PART
EP05028554A EP1804143B1 (en) 2005-12-28 2005-12-28 Mechanical timepiece provided with means for adjusting the backlash of a wheel
JP2006347342A JP5020626B2 (en) 2005-12-28 2006-12-25 Mechanical timepiece having means for adjusting vibration of rotating parts or train wheel
US11/617,009 US20070147180A1 (en) 2005-12-28 2006-12-28 Mechanical timepiece including means for adjusting the shake of a rotating part or wheel set
CN2006101714979A CN1991636B (en) 2005-12-28 2006-12-28 Mechanical timepiece fitted with a device for adjusting the shake of a rotating part or wheel set
HK07110027.9A HK1104939A1 (en) 2005-12-28 2007-09-14 Mechanical timepiece including means for adjusting the shake of a rotating part or wheel set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05028554A EP1804143B1 (en) 2005-12-28 2005-12-28 Mechanical timepiece provided with means for adjusting the backlash of a wheel

Publications (2)

Publication Number Publication Date
EP1804143A1 EP1804143A1 (en) 2007-07-04
EP1804143B1 true EP1804143B1 (en) 2009-06-03

Family

ID=37315501

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05028554A Active EP1804143B1 (en) 2005-12-28 2005-12-28 Mechanical timepiece provided with means for adjusting the backlash of a wheel

Country Status (7)

Country Link
US (1) US20070147180A1 (en)
EP (1) EP1804143B1 (en)
JP (1) JP5020626B2 (en)
CN (1) CN1991636B (en)
AT (1) ATE433139T1 (en)
DE (1) DE602005014798D1 (en)
HK (1) HK1104939A1 (en)

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Publication number Priority date Publication date Assignee Title
RU2562709C1 (en) * 2013-06-14 2015-09-10 Эта Са Мануфактюр Орложэр Сюис Adjustment of mechanical vibration of gear set of clock mechanism

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CH700040B1 (en) * 2008-12-02 2014-02-28 Hublot Sa Geneve Timepiece.
JP5253201B2 (en) 2009-01-23 2013-07-31 セイコーインスツル株式会社 Bearing structure and watch having the same
EP2735921B1 (en) 2011-08-29 2017-10-04 ETA SA Manufacture Horlogère Suisse Clock escapement holder
CH707808B1 (en) * 2013-03-19 2017-05-15 Nivarox Far Sa Watch mechanism cassette.
EP2781966B1 (en) * 2013-03-19 2018-05-02 Nivarox-FAR S.A. Anchor for clock escapement mechanism
CH712314A1 (en) * 2016-04-01 2017-10-13 Richemont Int Sa Clockwork movement.
EP3825783A1 (en) * 2019-11-25 2021-05-26 ETA SA Manufacture Horlogère Suisse Mechanism for adjusting a timepiece bridge
EP3859451A1 (en) * 2020-01-29 2021-08-04 ETA SA Manufacture Horlogère Suisse Movement endshake adjustment device
EP4006649A1 (en) * 2020-11-27 2022-06-01 ETA SA Manufacture Horlogère Suisse Attachment device for adjusting the movement of a balance
FR3133457A1 (en) * 2022-03-08 2023-09-15 Bulgari Horlogerie Sa Bridge for guiding a balance of a timepiece.

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CH368752A (en) * 1961-01-24 1963-05-31 D Horlogerie Lemania Lugrin S Device for adjusting the axial swing of the axis of a balance wheel by elastic deformation of the cock
US3393506A (en) * 1966-09-21 1968-07-23 United States Time Corp Balance wheel for horological instruments
FR1545748A (en) 1966-09-21 1968-11-15 Us Times Corp Bridge for pendulum of horological instruments
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US5481074A (en) * 1992-08-18 1996-01-02 Key Tronic Corporation Computer keyboard with cantilever switch and actuator design
CN2674485Y (en) * 2003-12-25 2005-01-26 天津渤海中鸥表业技术有限公司 Flywheel structure for watch speed-regulating mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2562709C1 (en) * 2013-06-14 2015-09-10 Эта Са Мануфактюр Орложэр Сюис Adjustment of mechanical vibration of gear set of clock mechanism

Also Published As

Publication number Publication date
JP5020626B2 (en) 2012-09-05
ATE433139T1 (en) 2009-06-15
EP1804143A1 (en) 2007-07-04
DE602005014798D1 (en) 2009-07-16
US20070147180A1 (en) 2007-06-28
HK1104939A1 (en) 2008-01-25
CN1991636B (en) 2012-02-29
CN1991636A (en) 2007-07-04
JP2007178432A (en) 2007-07-12

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