EP2085832A1 - Chronographenvorrichtung mit Reibungskupplung - Google Patents

Chronographenvorrichtung mit Reibungskupplung Download PDF

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Publication number
EP2085832A1
EP2085832A1 EP08151029A EP08151029A EP2085832A1 EP 2085832 A1 EP2085832 A1 EP 2085832A1 EP 08151029 A EP08151029 A EP 08151029A EP 08151029 A EP08151029 A EP 08151029A EP 2085832 A1 EP2085832 A1 EP 2085832A1
Authority
EP
European Patent Office
Prior art keywords
clutch
chronograph
spring
shaft
wheel
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
EP08151029A
Other languages
English (en)
French (fr)
Other versions
EP2085832B1 (de
Inventor
M.Edmond Capt
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.)
Blanepain Sa
Original Assignee
Frederic Piguet 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 Frederic Piguet SA filed Critical Frederic Piguet SA
Priority to EP20080151029 priority Critical patent/EP2085832B1/de
Publication of EP2085832A1 publication Critical patent/EP2085832A1/de
Application granted granted Critical
Publication of EP2085832B1 publication Critical patent/EP2085832B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/001—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power
    • G04B11/003—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power with friction member, e.g. with spring action

Definitions

  • Any chronograph mechanism is driven by a clockwork movement via a clutch to start and stop this mechanism very quickly, in combination with locking means that keep stopped the chronograph indicators.
  • Two types of clutches are commonly used in chronographs and are distinguished by the direction of movement of the movable member of the clutch.
  • the side clutch system uses a clutch wheel with triangular teeth, carried by a rocker and movable in its own plane, to engage on a toothing at low pitch of the chronograph mobile. Said step is reduced to minimize the small angular jumps that the engagement of the teeth causes on the chronograph mobile and on the seconds hand. This jump is the main disadvantage of the lateral clutch system.
  • the vertical clutch system uses a friction clutch.
  • a friction clutch For example, a current construction is described in detail in the patent application EP 1791043 and corresponds to the preamble of claim 1 attached hereto.
  • the movable clutch element is a ring that slides axially around the chronograph shaft and has a large collar permanently pushed by a clutch spring bearing on the shaft. The spring tends to press the ring against a wheel constituting the drive plate, with a minimum force sufficient to frictionally transmit the rotation of this plate to the shaft in all operating conditions.
  • a beveled jaw clamp raises the collar and the ring against the thrust of the clutch spring, which frees the rotation of the plate and at the same time frictionally locks the ring, the spring and the tree.
  • the present invention aims to create a new type of chronograph clutch, associated with control means from a column wheel and likely to avoid the aforementioned drawbacks of the prior art.
  • a chronograph control device of the kind indicated in the preamble above characterized in that the clutch comprises a plurality of clutch elements which are movable in a radial plane perpendicular to this axis for elastically apply, under the effect of the clutch spring or springs, against a wall rotatably connected to the drive plate.
  • the device shown in the drawings comprises a chronograph mobile 1 capable of rotating about an axis 2, its central shaft 3 being mounted in a conventional manner in bearings which are not shown here.
  • One end 4 of the shaft 3 carries the seconds hand of the chronograph.
  • the device mainly comprises a column wheel 5 which actuates a clamp 6 and an insulator 7 biased by a spring 8.
  • the column wheel 5, which is of conventional construction of the two-stroke type, is controlled on its toothing 9 by the manual pushbutton START / STOP of the chronograph.
  • a drive plate 10 provided with a pinion 11 is mounted freely rotatably on the shaft 3, between a collar 12 and a ring 13 which retain it axially.
  • the pinion 11 is engaged with a wheel of the watch movement of the chronograph watch, thus permanently rotating the drive plate 10.
  • the latter comprises, in its peripheral region, a cylindrical wall 14 of low height, centered on the axis 2 and defining a cavity above the disc 10.
  • This cavity contains a clutch spring 16 of generally flat shape, disposed in a radial plane 20 (see figure 4 ) and having three curved and flexible arms, which can be seen in the figure 2 .
  • the spring 16 comprises a hub 18 with a central bore, to be mounted rotatably around the collar 12 of the shaft, and three holes 19 equidistant angularly.
  • the arms 17 of the spring also distributed in a symmetry of rotation at 120 degrees from each other about the axis 2, are attached to the hub 18 and each have a rounded end portion serving as a clutch element 22.
  • the outer surface of the clutch member extends in a substantially circumferential direction.
  • These elements 22 tend to elastically bear in the radial direction against the cylindrical wall 14 of the drive plate 10, each arm being prestressed by bending in the radial plane 20 during assembly of the spring.
  • Each clutch member 22 is provided with a control pin 23 extending axially upward in the orientation shown here, i.e. towards the opposite side of the dial.
  • the clutch spring 16 is rotatably attached to a clutch disc 24 placed above it and having three tenons 25 engaged in the holes 19 of the spring 16.
  • the disc 24 is rotatably mounted around the shaft 3 and bears axially against the collar 12 thanks to the axial force of a friction spring 26 of the diaphragm type, bearing against a friction ring 27 fixed to the shaft 3. This force has a minimum value to create a sufficient friction torque to safely drive the chronograph .
  • the disc 24 has a cylindrical periphery 28 against which can be applied symmetrically the two branches 29 of the clamp 6.
  • the disc 24 further comprises three openings 30 to pass the pins 23 of the spring 16 with play in all directions.
  • the elements 14 to 25 form a clutch 31 for connecting and disconnecting the drive between the plate 10 and the shaft 3.
  • the chronograph mobile 1 contains an isolation wheel 32 provided with a toothing 33 and rotatably mounted around the shaft 3 between the friction ring 27 and another ring 34 fixed to the clutch. tree.
  • the isolation wheel 32 has three identical circumferentially elongated apertures 35 which each receive one of the control pins 23 of the clutch spring 16 and whose outer edge forms a cam surface 36 shaped to radially move the ankle. 23 corresponding.
  • the shaft 3 carries as usual a reset heart 38, a finger element 39, to drive the minute counter of the chronograph, and finally a counterweight 40.
  • Each branch has a boss 43 opposite columns 44 and recesses 45 of the column wheel 5, so that the branches 29 are alternately spaced and released during successive rotation steps of the column wheel.
  • the insulator 7 is a lever pivotally mounted at 46 and supported by the spring 8 so that a boss 47 of its short arm 48 tends to lean against the columns 44 and to enter the recesses 45 of the column wheel.
  • Its long arm has a flexible curved portion 50 in its own plane, terminated by a hook 51 having a tooth 52 in front of the toothing 33 of the insulation wheel 32.
  • Two fixed pins 53 and 54 limit the movement of the hook 51 of the insulator resting against the flanks of the hook, inclined relative to the direction of its movement, so as respectively maintain the tooth 52 in the toothing 33 or away.
  • the chronograph When the START / STOP pusher is pressed a second time, the chronograph immediately goes into the off state, illustrated by the figures 5 and 6 by the following actions.
  • the column wheel 5 turns one step, so that the bumps 43 and 47 fall into one of its recesses 45.
  • the stopper 6 closes by its elasticity and stops the clutch disk 24 by clamping between its branches 29, while the insulator 7 pivots suddenly under the effect of the spring 8, so that its hook 51, makes a jump in the direction A, which makes it engage its tooth 52 in the toothing 33 and rotate the insulation wheel 32 until the cam surfaces 36 push the pins 23 radially towards the center .
  • the hook 51 can be stopped by the pin 53 so that it keeps the insulation wheel in the off position.
  • the clutch elements 22 of the spring 16 no longer touch the drive plate 10, which continues to rotate, and the spring is stopped by the clutch disc 24. It also keeps at rest via the friction spring 26, the shaft 3 and the chronograph indicators, making it possible to read the measured time.
  • the user has the choice between two actions: to restart the chronograph, to continue the measurement started, or reset it.
  • To restart the chronograph it again presses the START / STOP pushbutton, which turns the column wheel 5 by one step and returns the entire device to the walking position described with reference to the Figures 1 to 4 .
  • the insulator 7 pivots in the opposite direction to A, its tooth 52 rotates in the same direction the insulation wheel 32, whose cam surfaces 36 release the pins 23 of the clutch spring 16 at the same time that the clamp 6 opens.
  • the spring 16 pushes the clutch elements 22 against the wall 14 of the drive disk 10 and thus restores the clutch in the engaged position.
  • the second manual chronograph pushbutton To reset the chronograph from the stop position, the second manual chronograph pushbutton must be pressed. In the usual way, this does not act on the column wheel, but only on one or more hammers going to be applied against the heart 38 seconds and possible other hearts if the chronograph has minutes and hours counters .
  • the core 38 rotates to its zero position by directly driving the shaft 3 and the elements fixed thereto, in particular the friction ring 27 which can then slide on the spring 26, which is prevented from rotating because of its friction on a larger diameter against the clutch disc 24 blocked by the clamp 6.
  • the couple necessary to slide the ring 27 must only overcome the minimal friction torque required for the chronograph operation, since the axial compression of the spring 26 does not vary, unlike what happens in the vertical clutch system mentioned above.
  • the invention is not limited to the embodiment described here, because it can be subject to multiple modifications and variants without departing from the principle of the solution to the problem described above.
  • the number and / or configuration of the clutch elements and the associated spring or springs may vary, as well as the configuration of their control means, in place of the insulator 7 and the wheel 32. It is possible to in particular consider combining these means to the clamp, for example as is the case in the vertical clutch system, since even the vertical movement of a cam acting on the clutch elements radial movement would not vary the compression force of the friction spring 26 and thus the friction torque that resists the reset.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
EP20080151029 2008-02-04 2008-02-04 Chronographenvorrichtung mit Reibungskupplung Active EP2085832B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20080151029 EP2085832B1 (de) 2008-02-04 2008-02-04 Chronographenvorrichtung mit Reibungskupplung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20080151029 EP2085832B1 (de) 2008-02-04 2008-02-04 Chronographenvorrichtung mit Reibungskupplung

Publications (2)

Publication Number Publication Date
EP2085832A1 true EP2085832A1 (de) 2009-08-05
EP2085832B1 EP2085832B1 (de) 2013-04-10

Family

ID=39816735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080151029 Active EP2085832B1 (de) 2008-02-04 2008-02-04 Chronographenvorrichtung mit Reibungskupplung

Country Status (1)

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EP (1) EP2085832B1 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2871534A1 (de) * 2013-11-06 2015-05-13 ETA SA Manufacture Horlogère Suisse Triebfeder einer Uhrwerk mit unidirektionalem Zahnrad
EP2897002A3 (de) * 2014-01-16 2016-05-25 Richemont International S.A. Isolierter Schleppzeigermechanismus und mechanische Uhr, die einen Chronografenmechanismus mit einem solchen isolierten Schleppzeigermechanismus umfasst
CN106896693A (zh) * 2016-12-16 2017-06-27 惠贯有限公司 一种手表用垂直离合结构
EP3324249A1 (de) 2016-11-17 2018-05-23 Nogerah SA Kupplungssystem für chronograph
EP3407143A1 (de) 2017-05-24 2018-11-28 Rolex Sa Mechanische verbindungsvorrichtung
EP3671370A1 (de) 2018-12-20 2020-06-24 Patek Philippe SA Genève Kupplungsvorrichtung und chronographenmechanismus, der eine solche kupplungsvorrichtung umfasst
EP3770693A1 (de) 2019-07-23 2021-01-27 Omega SA Anschlagmechanismus für uhrenkäfig mit anschlagrad
JP2021018243A (ja) * 2019-07-23 2021-02-15 オメガ・エス アー キャリッジ止め細長材を備える計時器用キャリッジ止め
CN113296383A (zh) * 2020-02-21 2021-08-24 宝玑表有限公司 用于时计的竖直离合器装置
CN115453843A (zh) * 2022-08-29 2022-12-09 中国计量大学 一种带复位功能的计时机械结构
EP4163732A1 (de) 2021-10-11 2023-04-12 LVMH Swiss Manufactures SA Kupplungsuhrmechanismus
EP4202577A1 (de) * 2021-12-21 2023-06-28 Manufacture d'Horlogerie Audemars Piguet SA Wippevorrichtung eines uhrwerks

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3770696B1 (de) * 2019-07-23 2021-12-01 Omega SA Anschlagkäfig für uhr mit aufzugstift und anschlagstift
EP3770694B1 (de) * 2019-07-23 2021-12-08 Omega SA Anschlagkäfig für uhr mit zwei elastischen anschlagelementen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0470018A1 (de) * 1990-07-31 1992-02-05 Eaton Controls S.A.R.L. Drehbetätigung mit Reibschluss
EP1791043A1 (de) 2005-11-24 2007-05-30 Vaucher Manufacture Fleurier SA Chronographenwerk für Uhr

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0470018A1 (de) * 1990-07-31 1992-02-05 Eaton Controls S.A.R.L. Drehbetätigung mit Reibschluss
EP1791043A1 (de) 2005-11-24 2007-05-30 Vaucher Manufacture Fleurier SA Chronographenwerk für Uhr

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9298163B2 (en) 2013-11-06 2016-03-29 Eta Sa Manufacture Horlogere Suisse Timepiece wheel set with a unidirectional wheel
EP2871534A1 (de) * 2013-11-06 2015-05-13 ETA SA Manufacture Horlogère Suisse Triebfeder einer Uhrwerk mit unidirektionalem Zahnrad
EP2897002A3 (de) * 2014-01-16 2016-05-25 Richemont International S.A. Isolierter Schleppzeigermechanismus und mechanische Uhr, die einen Chronografenmechanismus mit einem solchen isolierten Schleppzeigermechanismus umfasst
EP3324249A1 (de) 2016-11-17 2018-05-23 Nogerah SA Kupplungssystem für chronograph
WO2018091476A1 (fr) 2016-11-17 2018-05-24 Nogerah Sa Systeme d'embrayage pour chronographe
JP2019536036A (ja) * 2016-11-17 2019-12-12 ノゲラー エスアーＮｏｇｅｒａｈ Ｓａ クロノグラフ用連結システム
JP7042822B2 (ja) 2016-11-17 2022-03-28 ノゲラー エスアー クロノグラフ用連結システム
CN106896693A (zh) * 2016-12-16 2017-06-27 惠贯有限公司 一种手表用垂直离合结构
US11262707B2 (en) 2017-05-24 2022-03-01 Rolex Sa Mechanical connection device
EP3407143A1 (de) 2017-05-24 2018-11-28 Rolex Sa Mechanische verbindungsvorrichtung
EP3671370A1 (de) 2018-12-20 2020-06-24 Patek Philippe SA Genève Kupplungsvorrichtung und chronographenmechanismus, der eine solche kupplungsvorrichtung umfasst
JP2021018243A (ja) * 2019-07-23 2021-02-15 オメガ・エス アー キャリッジ止め細長材を備える計時器用キャリッジ止め
EP3770693A1 (de) 2019-07-23 2021-01-27 Omega SA Anschlagmechanismus für uhrenkäfig mit anschlagrad
CN113296383A (zh) * 2020-02-21 2021-08-24 宝玑表有限公司 用于时计的竖直离合器装置
US11353826B2 (en) 2020-02-21 2022-06-07 Montres Breguet S.A. Vertical clutch device for a timepiece
EP4163732A1 (de) 2021-10-11 2023-04-12 LVMH Swiss Manufactures SA Kupplungsuhrmechanismus
EP4202577A1 (de) * 2021-12-21 2023-06-28 Manufacture d'Horlogerie Audemars Piguet SA Wippevorrichtung eines uhrwerks
WO2023119079A1 (fr) * 2021-12-21 2023-06-29 Manufacture D' Horlogerie Audemars Piguet Sa Dispositif de bascule d'un mécanisme horloger
CN115453843A (zh) * 2022-08-29 2022-12-09 中国计量大学 一种带复位功能的计时机械结构
CN115453843B (zh) * 2022-08-29 2023-08-22 中国计量大学 一种带复位功能的计时机械结构

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