EP1804142A1 - 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
EP1804142A1
EP1804142A1 EP05028552A EP05028552A EP1804142A1 EP 1804142 A1 EP1804142 A1 EP 1804142A1 EP 05028552 A EP05028552 A EP 05028552A EP 05028552 A EP05028552 A EP 05028552A EP 1804142 A1 EP1804142 A1 EP 1804142A1
Authority
EP
European Patent Office
Prior art keywords
adjusting
bridge
screw
plate
base
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.)
Granted
Application number
EP05028552A
Other languages
German (de)
French (fr)
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EP1804142B1 (en
Inventor
Christian Rüfenacht
Ivan Villar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omega SA
Original Assignee
ETA SA Manufacture Horlogere Suisse
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to DE602005015878T priority Critical patent/DE602005015878D1/en
Priority to EP05028552A priority patent/EP1804142B1/en
Priority to AT05028552T priority patent/ATE438889T1/en
Priority to JP2006347341A priority patent/JP4987457B2/en
Priority to US11/616,982 priority patent/US7287900B2/en
Priority to CN2006101714964A priority patent/CN1991635B/en
Publication of EP1804142A1 publication Critical patent/EP1804142A1/en
Priority to HK07110028.8A priority patent/HK1104940A1/en
Application granted granted Critical
Publication of EP1804142B1 publication Critical patent/EP1804142B1/en
Active legal-status Critical Current
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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
    • G04B17/285—Tourbillons or carrousels
    • 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 equipped with a device for adjusting the play of a rotating wheel, in particular of the play of a balance wheel.
  • the watchmaker who adjusts the balance of the balance must act on the three adjustment screws by turning them successively and repeatedly until the board reaches a height defining a correct frog for the pendulum.
  • three adjustment screws increase the cost of this timepiece and their arrangement at the periphery of the clamping screw requires relatively large dimensions for the base of the bridge. This poses a problem for the design of the watch movement and in particular for the arrangement of the balance bridge.
  • a friction spring formed by an elastically deformable washer is provided under the nut so as to maintain the position thereof when not actuated by a watchmaker.
  • the two clamping screws are respectively provided at the periphery of the two respective bases so as to allow the adjusting nuts which have splines to rotate on the outer lateral surface to facilitate their actuation with the aid of a suitable tool and thus the adjusting the balance of the balance.
  • 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, without increasing the size of the bridge considered or limit the layout of its peripheral region.
  • the adjustment means comprise at least one element for adjusting the distance between a base of the considered bridge and the plate, this adjustment element being pierced at its center for the passage of a clamping screw and operable through a hole passing through said base, said clamping screw being introduced into this through hole for fixing this base with said plate.
  • the adjusting member is constituted by a set screw arranged to allow the variation of the distance between the base and the plate by screwing or unscrewing the adjusting screw.
  • the adjusting screw is screwed into the bridge and the clamping screw is screwed into the plate.
  • the adjusting screw has a first end bearing against the plate and its second end has a shape adapted to a tool for rotating from said upper face of the bridge in question.
  • Figure 1 a mechanical timepiece 2 equipped with a rotating mobile and comprising a device for adjusting the frost of this rotating mobile 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 of which a 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 bridge 4 comprises two areas of least mechanical strength respectively arranged at the two end regions of the board 10, that is to say between the two bases 16 and 18 respectively and the central portion 20 carrying the first bearing for the axis of the balance.
  • balance of the equilibrium control means which are formed on the one hand by a screw 30 which fixed the base 16 to the plate 14 rigidly leaving the base in a relatively fixed position to this plate, in support against this last one.
  • the second base 18 of the bridge 4 is associated with a means of deformation of the bridge 4 which is constituted by a screw 34 of relatively large diameter and pierced at its center.
  • This adjusting screw 34 defines an element for adjusting the distance between the base 18 of the bridge 4 and the plate 14. It comprises a flat head 36 provided with a slot for screwing this screw from the lower part of the bridge.
  • the adjusting screw 34 further comprises a cylinder 38 having a fine pitch external thread so as to be able to finely vary the distance between the external surface 37 of the head 36 bearing against the plate 14 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 into 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 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 that adjustment can be made from the upper surface 46. of bridge 4 through the through opening 42. To do this, the watchmaker will maintain for example with the aid of 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 causes a deformation of the bridge 4 in the embodiment of FIG. 1.
  • the distance between the base 18 and the plate 14 is varied and the plate 10 is deformed so that its central zone 20, where the upper bearing is located for the axis of the balance, is also displaced so as to allow the adjustment of the frolicking of this pendulum.
  • the board 10 comprises at its two end portions two zones of lesser mechanical resistance which each define a zone of localized deformation or flexible articulation between the two bases 16 and 18. These zones 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. Thus, the adjustment of the balance of the balance can generate here a certain inclination of the central portion 20 of the board 10, but this inclination remains weak.
  • 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 levels finely done 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. 6 is a sectional view of a second embodiment of a timepiece equipped with means for adjusting the balance of the balance.
  • This embodiment differs from the first embodiment of FIG. 1. in that it comprises two adjustment devices 34 according to the present invention respectively associated with the two bases 16 and 18 of the bridge 54. Thus, the relative distance between each of the bases 16 and 18 and the plate 14 can be finely adjusted to using the device 34 associated with each base.
  • This second embodiment makes it possible to adjust the play of the balance 6 while keeping the board 10 horizontal, that is to say parallel to the general plane of the watch movement.
  • the rocker 6 has an axis 56 whose two ends pivot respectively in the bearings 58 and 60.
  • FIG. 7 is a sectional view of a third embodiment of a timepiece according to the invention in which the rocker bridge 64 comprises a single base 18.
  • the base 18 is associated with a device for adjusting the distance between this base and the plate 14 of the type described above.
  • the adjusting screw 34 has a head 36 of relatively large diameter to ensure proper seating of the bridge 64 on the plate 14. Because the clamping screw 32 is coaxial with the adjusting screw 34, it is it is it is possible to fix the bridge 64 rigidly to the plate 14 and to keep the board 70 of this bridge 64 substantially horizontal. By screwing or unscrewing the screw 34 while the screw 32 is not in place, it is possible to precisely adjust the distance between the two bearings 58 and 60 and thus obtain an optimal clearance for the balance 6.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Transmission Devices (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Details Of Measuring And Other Instruments (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Toys (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Pinball Game Machines (AREA)

Abstract

The time piece has an adjustment unit for adjusting a backlash of a balance, whose one of bearings is arranged in a balance bridge (4). The bridge has a base (18) associated with an adjusting screw (34) that has a head (36) resting on a plate (14) and varies the distance between the base and the plate. The screw is pierced in its center for the passage of a clamping screw (32), which fixes the bridge to the plate. The adjusting screw is arranged in a hole (42) traversing the base and is turned through the hole from an upper face (46) of the bridge for adjusting the shake of the balance.

Description

La présente invention concerne une pièce d'horlogerie mécanique équipée d'un dispositif 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 equipped with a device for adjusting the play of a rotating wheel, in particular of the play of a balance wheel.

Il est connu du brevet suisse No. 20552 au nom de J. L. Kurtz, déposé le 1er novembre 1899, un pont de balancier associé à des moyens de réglage de la position relative des deux paliers dans lesquels pivotent respectivement les deux extrémités de l'axe du balancier. Le pont de balancier décrit est du type simple, c'est-à-dire avec une seule base fixée à une platine et une planche reliée à une extrémité à cette seule base et présentant à son autre extrémité libre une ouverture pour l'agencement d'un palier. Le pont de balancier est fixé à la platine par une seule vis de serrage traversant la seule base.It is known from the patent Swiss No. 20552 on behalf of JL Kurtz, filed November 1, 1899, a balance-bridge associated with the position adjusting means on the two bearings in which are pivoted respectively both ends of the balance axis. The pendulum bridge described is of the simple type, that is to say with a single base fixed to a plate and a board connected at one end to this single base and having at its other free end an opening for the arrangement of 'a step. The balance bridge is fixed to the plate by a single clamping screw passing through the sole base.

Dans ce document, le réglage de l'ébat de l'axe de balancier est effectué par un ajustement de la hauteur de la planche du pont de balancier. Pour ce faire, il est prévu trois vis de réglage en périphérie de la vis de serrage. Les trois vis de réglage traversent la base du pont et s'appuient du côté de la platine contre trois autres vis complémentaires définissant ainsi trois points d'appui pour les trois vis de réglage. En vissant ou dévissant les trois vis de réglage de manière sensiblement homogène, il est ainsi possible de varier la hauteur de la planche du pont de balancier, c'est-à-dire de varier la distance relative de cette planche à la platine. Dans ce document il est prévu que la planche reste horizontale, c'est-à-dire parallèle au plan général de la platine. Ainsi, l'horloger qui règle l'ébat du balancier doit agir sur les trois vis de réglage en les tournant successivement et de manière répétée jusqu'à ce que la planche atteigne une hauteur définissant un ébat correct pour le balancier. Ceci présente un désavantage important pour le montage de la pièce d'horlogerie et le réglage de l'ébat du balancier. De plus, trois vis de réglage augmentent le coût de cette pièce d'horlogerie et leur agencement en périphérie de la vis de serrage nécessite des dimensions relativement grandes pour la base du pont. Ceci pose un problème pour la conception du mouvement horloger et en particulier pour l'agencement du pont de balancier.In this document, the adjustment of the balance axis of the frog is made by adjusting the height of the board of the pendulum bridge. To do this, three adjusting screws are provided at the periphery of the clamping screw. The three adjustment screws pass through the base of the bridge and rest against the side of the plate against three other complementary screws thus defining three points of support for the three adjustment screws. By screwing or unscrewing the three adjustment screws in a substantially homogeneous manner, it is thus possible to vary the height of the board of the balance bridge, that is to say to vary the relative distance of this board to the board. In this document it is expected that the board remains horizontal, that is to say parallel to the general plane of the plate. Thus, the watchmaker who adjusts the balance of the balance must act on the three adjustment screws by turning them successively and repeatedly until the board reaches a height defining a correct frog for the pendulum. This presents an important disadvantage for the assembly of the timepiece and the adjustment of the balance of the balance. In addition, three adjustment screws increase the cost of this timepiece and their arrangement at the periphery of the clamping screw requires relatively large dimensions for the base of the bridge. This poses a problem for the design of the watch movement and in particular for the arrangement of the balance bridge.

On connaît aussi une pièce d'horlogerie vendue par la maison Rolex qui possède un système de réglage de l'ébat du balancier. Dans cette pièce d'horlogerie, le pont de balancier est du type double, c'est-à-dire présentant deux bases agencées aux deux extrémités de la planche du pont et permettant de fixer ce pont de balancier de manière rigide de part et d'autre du palier agencé sensiblement au centre de la planche. Les deux bases sont respectivement fixées à la platine par deux vis de serrage. Chacune des deux vis de serrage est vissée à l'intérieur d'un cylindre chassé dans la platine. Ce cylindre présente à l'intérieur un taraudage pour la vis de serrage et un filetage extérieur pour un écrou de réglage. Les deux bases du pont de balancier sont maintenues en appui contre les deux écrous par les deux vis de serrage. Un ressort de friction formé par une rondelle élastiquement déformable est prévu sous l'écrou de manière à maintenir la position de celui-ci lorsqu'il n'est pas actionné par un horloger. Les deux vis de serrage sont prévues respectivement à la périphérie des deux bases respectives de manière à permettre de tourner les écrous de réglage qui présentent des cannelures sur la surface latérale externe pour faciliter leur actionnement à l'aide d'un outil approprié et ainsi le réglage de l'ébat du balancier.There is also a timepiece sold by Rolex which has a system for adjusting the balance of the balance. In this timepiece, the balance bridge is of the double type, that is to say having two bases arranged at both ends of the bridge board and for fixing the balance bridge rigidly on both sides. other of the landing arranged substantially in the center of the board. The two bases are respectively fixed to the plate by two clamping screws. Each of the two clamping screws is screwed inside a cylinder driven into the plate. This cylinder has inside a tapping for the clamping screw and an external thread for an adjusting nut. The two bases of the balance bridge are held in abutment against the two nuts by the two clamping screws. A friction spring formed by an elastically deformable washer is provided under the nut so as to maintain the position thereof when not actuated by a watchmaker. The two clamping screws are respectively provided at the periphery of the two respective bases so as to allow the adjusting nuts which have splines to rotate on the outer lateral surface to facilitate their actuation with the aid of a suitable tool and thus the adjusting the balance of the balance.

Le système de réglage de l'ébat d'un balancier décrit ci-avant présente certains inconvénients. Premièrement il est relativement complexe et onéreux. En effet, ce système comprend deux pièces cylindriques, avec un taraudage à l'intérieur et un filetage extérieur, qui doivent être chassées dans la platine. De plus, ce système comprend deux écrous de réglage cannelés. Ensuite, pour permettre le réglage de la hauteur de la planche du pont avec le balancier en place, il est nécessaire de prévoir les vis de serrage en bordure extérieure des deux bases et de prévoir un espace libre en périphérie des deux vis de serrage pour permettre un accès aux écrous de réglage qui sortent latéralement dessous les bases. Ce système de réglage est donc relativement compliqué et limite les possibilités d'agencer le pont de balancier dans le mouvement horloger.The balance control system of a balance described above has certain disadvantages. Firstly it is relatively complex and expensive. Indeed, this system comprises two cylindrical parts, with an internal thread and an external thread, which must be driven into the plate. In addition, this system includes two fluted adjusting nuts. Then, to allow adjustment of the height of the bridge board with the balance in place, it is necessary to provide the clamping screws on the outer edge of the two bases and to provide a free space at the periphery of the two clamping screws to allow an access to the adjusting nuts coming out laterally below the bases. This adjustment system is therefore relatively complicated and limits the possibilities of arranging the balance bridge in the watch movement.

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, sans augmenter l'encombrement du pont considéré ou limiter l'agencement de sa région périphérique.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, without increasing the size of the bridge considered or limit the layout of its peripheral region.

A cet effet la présente invention 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.For this purpose the present invention 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 platinum, this timepiece comprising means for adjusting the play of this axis or shaft of the rotating mobile.

Les moyens de réglage selon l'invention comprennent au moins un élément de réglage de la distance entre une base du pont considéré et la platine, cet élément de réglage étant percé en son centre pour le passage d'une vis de serrage et actionnable à travers un trou traversant ladite base, ladite vis de serrage étant introduite dans ce trou traversant pour fixer cette base avec ladite platine. Ainsi, lors de l'actionnement de l'élément de réglage, la vis de serrage n'est pas en place dans le trou traversant et l'élément de réglage est actionné depuis la face supérieure dudit pont qui est opposée à ladite platine.The adjustment means according to the invention comprise at least one element for adjusting the distance between a base of the considered bridge and the plate, this adjustment element being pierced at its center for the passage of a clamping screw and operable through a hole passing through said base, said clamping screw being introduced into this through hole for fixing this base with said plate. Thus, when actuating the adjusting member, the clamping screw is not in place in the through hole and the adjusting member is actuated from the upper face of said bridge which is opposite said platen.

En particulier, l'élément de réglage est constitué par une vis de réglage agencée de manière à permettre la variation de la distance entre la base et la platine en vissant ou dévissant cette vis de réglage.In particular, the adjusting member is constituted by a set screw arranged to allow the variation of the distance between the base and the plate by screwing or unscrewing the adjusting screw.

Selon un mode de réalisation préféré, la vis de réglage est vissée dans le pont et la vis de serrage est vissée dans la platine. La vis de réglage a une première extrémité en appui contre la platine et sa deuxième extrémité présente une forme adaptée à un outil permettant de la tourner depuis ladite face supérieure du pont considéré.According to a preferred embodiment, the adjusting screw is screwed into the bridge and the clamping screw is screwed into the plate. The adjusting screw has a first end bearing against the plate and its second end has a shape adapted to a tool for rotating from said upper face of the bridge in question.

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;
  • les figures 2 à 5 sont diverses représentations d'un dispositif de réglage de l'ébat du balancier selon la présente invention équipant le mouvement horloger de la figure 1;
  • la figure 6 est une vue en coupe d'un mode de réalisation avec un pont de balancier ayant deux bases chacune équipée d'un dispositif de réglage selon l'invention.
  • la figure 7 est une vue en coupe d'un autre mode de réalisation avec un pont de balancier comprenant une seule base.
The present invention will be described hereinafter in detail with the aid of the appended drawing, given as non-limiting examples, in which:
  • 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;
  • Figures 2 to 5 are various representations of a balance of the equilibrium control device according to the present invention equipping the watch movement of Figure 1;
  • Figure 6 is a sectional view of an embodiment with a balance bridge having two bases each equipped with an adjusting device according to the invention.
  • Figure 7 is a sectional view of another embodiment with a balance bridge comprising a single base.

A la figure 1 est représenté une pièce d'horlogerie mécanique 2 équipée d'un mobile tournant et comprenant un dispositif de réglage de l'ébat de ce mobile tournant selon la présente invention.In Figure 1 is shown a mechanical timepiece 2 equipped with a rotating mobile and comprising a device for adjusting the frost of this rotating mobile according to the present invention.

Un mode de réalisation préféré de l'invention sera décrit ci-après à l'aide des figures 2 à 5. 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.A preferred embodiment of the invention will be described hereinafter with reference to FIGS. 2 to 5. 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 of which a 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. Le pont 4 comprend deux zones de moindre résistance mécanique 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.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 bridge 4 comprises two areas of least mechanical strength respectively arranged at the two end regions of the board 10, that is to say between the two bases 16 and 18 respectively and the central portion 20 carrying the first bearing for the axis of the balance.

Selon l'invention, il est prévu des moyens de réglage de l'ébat du balancier qui sont formés d'une part par une vis 30 qui fixe la base 16 à la platine 14 de manière rigide en laissant cette base dans une position fixe relativement à cette platine, en appui contre cette dernière. D'autre part, la deuxième base 18 du pont 4 est associée à un moyen de déformation du pont 4 qui est constitué par une vis 34 de diamètre relativement grand et percée en son centre. Cette vis de réglage 34 définit un élément de réglage de la distance entre la base 18 du pont 4 et la platine 14. Elle comprend une tête plate 36 munie d'une fente permettant de visser cette vis depuis la partie inférieure du pont. La vis de réglage 34 comprend en outre un cylindre 38 présentant un filetage extérieur à pas fin de manière à pouvoir varier finement la distance entre la surface externe 37 de la tête 36 en appui contre la platine 14 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.According to the invention, there is provided balance of the equilibrium control means which are formed on the one hand by a screw 30 which fixed the base 16 to the plate 14 rigidly leaving the base in a relatively fixed position to this plate, in support against this last one. On the other hand, the second base 18 of the bridge 4 is associated with a means of deformation of the bridge 4 which is constituted by a screw 34 of relatively large diameter and pierced at its center. This adjusting screw 34 defines an element for adjusting the distance between the base 18 of the bridge 4 and the plate 14. It comprises a flat head 36 provided with a slot for screwing this screw from the lower part of the bridge. The adjusting screw 34 further comprises a cylinder 38 having a fine pitch external thread so as to be able to finely vary the distance between the external surface 37 of the head 36 bearing against the plate 14 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 into 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. the absence of the clamping screw 32, as is particularly apparent from FIGS. 4 and 6. A friction spring having the shape of a curved washer 48 is arranged between the head 36 of the screw 34 and the lower 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 dans le mode de réalisation de la figure 1. 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 sa 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 that adjustment can be made from the upper surface 46. of bridge 4 through the through opening 42. To do this, the watchmaker will maintain for example with the aid of 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 causes a deformation of the bridge 4 in the embodiment of FIG. 1. Thus, by actuating the adjusting screw 34, the distance between the base 18 and the plate 14 is varied and the plate 10 is deformed so that its central zone 20, where the upper bearing is located for the axis of the balance, is also displaced so as to allow the adjustment of the frolicking of this pendulum.

Comme déjà décrit précédemment, la planche 10 comprend à ses deux parties d'extrémité deux zones de moindre résistance mécanique qui définissent chacune une zone de déformation localisée ou articulation flexible entre les deux bases 16 et 18. Ces zones 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. Ainsi, l'ajustement de l'ébat du balancier peut engendrer ici 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 of lesser mechanical resistance which each define a zone of localized deformation or flexible articulation between the two bases 16 and 18. These zones 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. Thus, the adjustment of the balance of the balance can generate here a certain inclination of the central portion 20 of the board 10, but this inclination remains weak.

Le mode de réalisation décrit ci-avant est remarquable par le fait que le réglage de l'ébat du balancier ou d'un mobile tournant est réalisé par un moyen de déformation du pont concerné, ce moyen de déformation étant agencé de manière à être actionné par la variation de la position d'un seul élément de réglage 34. Ensuite, cette variation peut être effectuée depuis la face supérieure du pont associé au mobile tournant dont l'ébat est réglé. De plus, l'agencement coaxial de la vis de serrage 32 et de la vis de réglage 34 selon la présente invention n'augmente pas l'encombrement du pont et ne nécessite aucun dégagement en périphérie de celui-ci.The embodiment described above is remarkable in that the adjustment of the balance of the balance or a rotating mobile is achieved by means of deformation of the bridge concerned, the deformation means being arranged to be actuated by the variation of the position of a single adjustment element 34. Then, this variation can be performed from the upper face of the bridge associated with the rotating wheel whose frost is set. In addition, the coaxial arrangement of the clamping screw 32 and the adjusting screw 34 according to the present invention does not increase the overall size of the bridge and does not require any clearance at the periphery thereof.

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 levels finely done 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 6 est représentée une vue en coupe d'un deuxième mode de réalisation d'une pièce d'horlogerie équipée de moyen de réglage de l'ébat du balancier, Ce mode de réalisation diffère du premier mode de réalisation de la figure 1 par le fait qu'il comprend deux dispositifs de réglage 34 selon la présente invention associés respectivement aux deux bases.l6 et 18 du pont 54. Ainsi, la distance relative entre chacune des bases 16 et 18 et la platine 14 peut être réglée finement à l'aide du dispositif 34 associé à chaque base. Ce deuxième mode de réalisation permet d'ajuster l'ébat du balancier 6 tout en maintenant la planche 10 horizontale, c'est-à-dire parallèle au plan général du mouvement horloger. Le balancier 6 possède un axe 56 dont les deux extrémités pivotent respectivement dans les paliers 58 et 60. Des plots ou goupilles de positionnement du pont 54 peuvent avantageusement être prévus, ces goupilles ou plots étant introduits dans des trous correspondants de la platine 14. L'ajustement de la hauteur de chacune des deux bases 16 et 18 peut être effectué depuis la face supérieure 46 du pont de balancier 54. Le dispositif de réglage formé de la vis 34 associé à la vis 32 ne sera pas décrit à nouveau ici en détail.FIG. 6 is a sectional view of a second embodiment of a timepiece equipped with means for adjusting the balance of the balance. This embodiment differs from the first embodiment of FIG. 1. in that it comprises two adjustment devices 34 according to the present invention respectively associated with the two bases 16 and 18 of the bridge 54. Thus, the relative distance between each of the bases 16 and 18 and the plate 14 can be finely adjusted to using the device 34 associated with each base. This second embodiment makes it possible to adjust the play of the balance 6 while keeping the board 10 horizontal, that is to say parallel to the general plane of the watch movement. The rocker 6 has an axis 56 whose two ends pivot respectively in the bearings 58 and 60. Pins or positioning pins of the bridge 54 may advantageously be provided, these pins or pins being inserted into corresponding holes of the plate 14. L height adjustment of each of the two bases 16 and 18 can be performed from the upper face 46 of the balance bridge 54. The adjustment device formed of the screw 34 associated with the screw 32 will not be described again here in detail .

A la figure 7 est représentée en coupe un troisième mode de réalisation d'une pièce d'horlogerie selon l'invention dans laquelle le pont de balancier 64 comprend une seule base 18. La base 18 est associée à un dispositif de réglage de la distance entre cette base et la platine 14 du type décrit ci avant. De préférence, la vis de réglage 34 présente une tête 36 d'un diamètre relativement grand pour assurer une bonne assise du pont 64 sur la platine 14. Du fait que la vis de serrage 32 est coaxiale à la vis de réglage 34, il est possible de fixer rigidement le pont 64 à la platine 14 et de maintenir la planche 70 de ce pont 64 sensiblement horizontale. En vissant ou dévissant la vis 34 alors que la vis 32 n'est pas en place, on peut régler précisément la distance entre les deux paliers 58 et 60 et obtenir ainsi un ébat optimal pour le balancier 6.FIG. 7 is a sectional view of a third embodiment of a timepiece according to the invention in which the rocker bridge 64 comprises a single base 18. The base 18 is associated with a device for adjusting the distance between this base and the plate 14 of the type described above. Preferably, the adjusting screw 34 has a head 36 of relatively large diameter to ensure proper seating of the bridge 64 on the plate 14. Because the clamping screw 32 is coaxial with the adjusting screw 34, it is it is possible to fix the bridge 64 rigidly to the plate 14 and to keep the board 70 of this bridge 64 substantially horizontal. By screwing or unscrewing the screw 34 while the screw 32 is not in place, it is possible to precisely adjust the distance between the two bearings 58 and 60 and thus obtain an optimal clearance for the balance 6.

Claims (5)

Pièce d'horlogerie mécanique équipée d'un mobile tournant (6) qui comprend un axe dont une extrémité pivote dans un premier palier porté par un pont (4; 54; 64) et l'autre extrémité pivote dans un second palier agencé dans une platine (14), cette pièce d'horlogerie comprenant des moyens de réglage de l'ébat dudit mobile tournant, caractérisée en ce que lesdits moyens de réglage comprennent au moins un élément (34) de réglage de la distance entre une base (18, 16) dudit pont et ladite platine, cet élément de réglage (34) ayant un premier trou (40) pour le passage d'une vis de serrage (32) et étant actionnable par un deuxième trou (42) usiné dans ladite base et traversant celle-ci, ladite vis de serrage étant introduite dans ledit deuxième trou pour fixer cette base avec ladite platine mais n'étant pas en place dans ce deuxième trou lors de l'actionnement dudit élément de réglage depuis la face supérieure (46) dudit pont opposée à ladite platine et par ledit deuxième trou pour effectuer le réglage de l'ébat du mobile tournant.Mechanical timepiece equipped with a rotating mobile (6) which comprises an axis of which one end pivots in a first bearing carried by a bridge (4; 54; 64) and the other end pivots in a second bearing arranged in a turntable (14), this timepiece comprising means for adjusting the fret of said rotating mobile, characterized in that said adjusting means comprise at least one element (34) for adjusting the distance between a base (18, 16) of said bridge and said plate, said adjusting member (34) having a first hole (40) for the passage of a clamping screw (32) and being operable by a second hole (42) machined in said base and through the latter, said clamping screw being introduced into said second hole to fix said base with said plate but not being in place in said second hole when said adjusting element is actuated from the upper face (46) of said bridge opposed to said platen and by said second hole for adjusting the fretting of the rotating wheel. Pièce d'horlogerie selon la revendication 1, caractérisée en ce que ledit élément de réglage (34) est constitué par une vis de réglage agencée de manière à permettre la variation de la distance entre ladite base et ladite platine en vissant ou dévissant cette vis de réglage.Timepiece according to claim 1, characterized in that said adjusting element (34) is constituted by a set screw arranged to allow the variation of the distance between said base and said plate by screwing or unscrewing said screw. setting. Pièce d'horlogerie selon la revendication 2, caractérisée en ce que ladite vis de réglage (34) est vissée dans ledit deuxième trou (42) et ladite vis de serrage (32) est vissée dans ladite platine, cette vis de réglage ayant une première extrémité (36) en appui contre ladite platine et sa deuxième extrémité présentant une forme adaptée à un outil permettant de tourner la vis de réglage.Timepiece according to claim 2, characterized in that said adjusting screw (34) is screwed into said second hole (42) and said clamping screw (32) is screwed into said plate, this adjusting screw having a first end (36) bearing against said plate and its second end having a shape adapted to a tool for turning the adjusting screw. Pièce d'horlogerie selon la revendication 3, caractérisée en ce que ladite première extrémité de ladite vis de réglage définit une tête (36) et ladite deuxième extrémité présente une fente transversale (44) pour un tournevis.Timepiece according to claim 3, characterized in that said first end of said adjusting screw defines a head (36) and said second end has a transverse slot (44) for a screwdriver. Pièce d'horlogerie selon la revendication 3 ou 4, caractérisée en ce que ladite vis de réglage présente un filet à pas fin permettant un réglage fin de la distance entre lesdits premier et deuxième paliers.Timepiece according to claim 3 or 4, characterized in that said adjusting screw has a fine pitch thread allowing fine adjustment of the distance between said first and second bearings.
EP05028552A 2005-12-28 2005-12-28 Mechanical timepiece provided with means for adjusting the backlash of a wheel Active EP1804142B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE602005015878T DE602005015878D1 (en) 2005-12-28 2005-12-28 Mechanical clock with device for adjusting the game of a rotating part
EP05028552A EP1804142B1 (en) 2005-12-28 2005-12-28 Mechanical timepiece provided with means for adjusting the backlash of a wheel
AT05028552T ATE438889T1 (en) 2005-12-28 2005-12-28 MECHANICAL CLOCK WITH DEVICE FOR ADJUSTING THE PLAY OF A ROTATED PART
JP2006347341A JP4987457B2 (en) 2005-12-28 2006-12-25 Mechanical timepiece having a device for adjusting vibration of rotating parts or train wheel
US11/616,982 US7287900B2 (en) 2005-12-28 2006-12-28 Mechanical timepiece fitted with a device for adjusting the shake of a rotating part or wheel set
CN2006101714964A CN1991635B (en) 2005-12-28 2006-12-28 Mechanical timepiece fitted with a device for adjusting the shake of a rotating part or wheel set
HK07110028.8A HK1104940A1 (en) 2005-12-28 2007-09-14 Mechanical timepiece fitted with a device for adjusting the shake of a rotating part or wheel set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05028552A EP1804142B1 (en) 2005-12-28 2005-12-28 Mechanical timepiece provided with means for adjusting the backlash of a wheel

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EP1804142A1 true EP1804142A1 (en) 2007-07-04
EP1804142B1 EP1804142B1 (en) 2009-08-05

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EP05028552A Active EP1804142B1 (en) 2005-12-28 2005-12-28 Mechanical timepiece provided with means for adjusting the backlash of a wheel

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US (1) US7287900B2 (en)
EP (1) EP1804142B1 (en)
JP (1) JP4987457B2 (en)
CN (1) CN1991635B (en)
AT (1) ATE438889T1 (en)
DE (1) DE602005015878D1 (en)
HK (1) HK1104940A1 (en)

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US8961002B2 (en) 2011-08-29 2015-02-24 Eta Sa Manufacture Horlogère Suisse Platform escapement for a timepiece
RU2589637C2 (en) * 2011-08-29 2016-07-10 Эта Са Мануфактюр Орложэр Сюис Platform for clocks lowering
FR2987910A1 (en) * 2012-03-12 2013-09-13 Nicolas Heim Clockwork mechanism, has index assembly system and screwable shock-proof cage for refining adjustments of mechanism, and plate driven by eccentric limitation stops to allow adjustment of teeth of escape wheel

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HK1104940A1 (en) 2008-01-25
CN1991635A (en) 2007-07-04
JP2007178431A (en) 2007-07-12
ATE438889T1 (en) 2009-08-15
US7287900B2 (en) 2007-10-30
DE602005015878D1 (en) 2009-09-17
US20070159931A1 (en) 2007-07-12
EP1804142B1 (en) 2009-08-05
JP4987457B2 (en) 2012-07-25
CN1991635B (en) 2010-09-29

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