EP1804143B1 - Pièce d'horlogerie mécanique comprenant des moyens de réglage de l'ébat d'un mobile tournant - Google Patents

Pièce d'horlogerie mécanique comprenant des moyens de réglage de l'ébat d'un mobile tournant 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
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1804143A1 (fr
Inventor
Christian Rüfenacht
Yvan 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
Omega SA
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 Omega SA filed Critical Omega SA
Priority to AT05028554T priority Critical patent/ATE433139T1/de
Priority to EP05028554A priority patent/EP1804143B1/fr
Priority to DE602005014798T priority patent/DE602005014798D1/de
Priority to JP2006347342A priority patent/JP5020626B2/ja
Priority to US11/617,009 priority patent/US20070147180A1/en
Priority to CN2006101714979A priority patent/CN1991636B/zh
Publication of EP1804143A1 publication Critical patent/EP1804143A1/fr
Priority to HK07110027.9A priority patent/HK1104939A1/xx
Application granted granted Critical
Publication of EP1804143B1 publication Critical patent/EP1804143B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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)
  • Vibration Prevention Devices (AREA)
  • Electromechanical Clocks (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Shutters For Cameras (AREA)
  • Pinball Game Machines (AREA)
  • Toys (AREA)
EP05028554A 2005-12-28 2005-12-28 Pièce d'horlogerie mécanique comprenant des moyens de réglage de l'ébat d'un mobile tournant Active EP1804143B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AT05028554T ATE433139T1 (de) 2005-12-28 2005-12-28 Mechanische uhr mit vorrichtung zur einstellung des spieles eines drehteiles
EP05028554A EP1804143B1 (fr) 2005-12-28 2005-12-28 Pièce d'horlogerie mécanique comprenant des moyens de réglage de l'ébat d'un mobile tournant
DE602005014798T DE602005014798D1 (de) 2005-12-28 2005-12-28 Mechanische Uhr mit Vorrichtung zur Einstellung des Spieles eines Drehteiles
JP2006347342A JP5020626B2 (ja) 2005-12-28 2006-12-25 回転部品又は輪列の振動を調整する手段を有する機械式時計
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 (zh) 2005-12-28 2006-12-28 包括用于调节旋转部件或轮副的摆动的装置的机械钟表
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 (fr) 2005-12-28 2005-12-28 Pièce d'horlogerie mécanique comprenant des moyens de réglage de l'ébat d'un mobile tournant

Publications (2)

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

Family

ID=37315501

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05028554A Active EP1804143B1 (fr) 2005-12-28 2005-12-28 Pièce d'horlogerie mécanique comprenant des moyens de réglage de l'ébat d'un mobile tournant

Country Status (7)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2562709C1 (ru) * 2013-06-14 2015-09-10 Эта Са Мануфактюр Орложэр Сюис Регулировка механической вибрации набора шестерен часового механизма

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
CH700040B1 (fr) * 2008-12-02 2014-02-28 Hublot Sa Geneve Pièce d'horlogerie.
JP5253201B2 (ja) 2009-01-23 2013-07-31 セイコーインスツル株式会社 軸受構造体及びこれを備えた時計
EP2735921B1 (fr) * 2011-08-29 2017-10-04 ETA SA Manufacture Horlogère Suisse Porte-échappement d'horlogerie
CH707808B1 (fr) * 2013-03-19 2017-05-15 Nivarox Far Sa Cassette de mécanisme d'horlogerie.
EP2781966B1 (fr) * 2013-03-19 2018-05-02 Nivarox-FAR S.A. Ancre de mécanisme d'échappement d'horlogerie
CH712314A1 (fr) * 2016-04-01 2017-10-13 Richemont Int Sa Mouvement d'horlogerie.
EP3825783A1 (fr) * 2019-11-25 2021-05-26 ETA SA Manufacture Horlogère Suisse Mécanisme de réglage d'un pont d horlogerie
EP3859451A1 (fr) * 2020-01-29 2021-08-04 ETA SA Manufacture Horlogère Suisse Dispositif de reglage d'ebat
EP4006649A1 (fr) * 2020-11-27 2022-06-01 ETA SA Manufacture Horlogère Suisse Dispositif de fixation de réglage d'ébat de balancier
FR3133457A1 (fr) * 2022-03-08 2023-09-15 Bulgari Horlogerie Sa Pont pour guidage d’un balancier d’une pièce d'horlogerie.

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CH20552A (fr) * 1899-11-01 1901-02-15 Lawrence Kurtz Joseph Pont de balancier disposé en vue du réglage de la position des paliers
CH368752A (fr) * 1961-01-24 1963-05-31 D Horlogerie Lemania Lugrin S Dispositif de réglage de l'ébat axial de l'axe d'un balancier par déformation élastique du coq
FR1545748A (fr) 1966-09-21 1968-11-15 Us Times Corp Pont pour balancier d'instruments d'horlogerie
US3393506A (en) * 1966-09-21 1968-07-23 United States Time Corp Balance wheel for horological instruments
CH503308A (fr) 1967-06-14 1970-10-30 Valjoux Sa Dispositif de réglage de la position, en hauteur, d'un pont de mouvement d'horlogerie, notamment du coq
JPS4716460U (xx) * 1971-03-24 1972-10-26
CH1473871A4 (xx) * 1971-10-08 1974-09-30
JPS5337667Y1 (xx) * 1976-05-31 1978-09-12
US5481074A (en) * 1992-08-18 1996-01-02 Key Tronic Corporation Computer keyboard with cantilever switch and actuator design
CN2674485Y (zh) * 2003-12-25 2005-01-26 天津渤海中鸥表业技术有限公司 手表调速机构的飞轮结构

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2562709C1 (ru) * 2013-06-14 2015-09-10 Эта Са Мануфактюр Орложэр Сюис Регулировка механической вибрации набора шестерен часового механизма

Also Published As

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

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