EP3824351B1 - Hemmungssystem und das hemmungssystem umfassendes messgerät - Google Patents

Hemmungssystem und das hemmungssystem umfassendes messgerät Download PDF

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Publication number
EP3824351B1
EP3824351B1 EP19724433.8A EP19724433A EP3824351B1 EP 3824351 B1 EP3824351 B1 EP 3824351B1 EP 19724433 A EP19724433 A EP 19724433A EP 3824351 B1 EP3824351 B1 EP 3824351B1
Authority
EP
European Patent Office
Prior art keywords
escapement
wheel
impulse
teeth
tooth
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
EP19724433.8A
Other languages
German (de)
English (en)
French (fr)
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EP3824351A1 (de
Inventor
Karl Bernhard Lederer
Georg Von Tardy-Tuch
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Creaditive Ag
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Creaditive Ag
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Publication of EP3824351A1 publication Critical patent/EP3824351A1/de
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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
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • G04B15/08—Lever escapements
    • 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
    • G04B15/00—Escapements
    • G04B15/10—Escapements with constant impulses for the regulating mechanism
    • 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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • G04B17/26—Compensation of mechanisms for stabilising frequency for the effect of variations of the impulses

Definitions

  • the present invention relates to an escapement system which can be used, for example, in a measuring device such as a watch.
  • the escapement system includes a drive axle and at least one escapement wheel having a plurality of pulse teeth.
  • Each of the impulse teeth is connected to the drive shaft via a respective spring element and has an initial position in which it is fixed such that the spring element has a preload torque.
  • rate regulators in drain gears and watches are subject to various force fluctuations, which are caused, among other things, by the quality of the drive spring, the drain gear or the lubricant. These power fluctuations have a causal effect on the isochronism of the rate regulator and thus on the quality of a watch. Efforts are therefore made to keep the drive train moving during the impulse as short as possible in order to minimize the number of sources of interference. To solve this problem is from the CH 708 043 It is known to place the teeth of the escape wheel on resilient members which are raised to an energy level by the force transmitted through the power train to the escape wheel. The energy thus stored is partially released to the lifting surfaces of the armature during momentum transfer.
  • an escapement system which comprises a drive axle and at least one escapement wheel, the at least one escapement wheel having a plurality of impulse teeth.
  • Each of the impulse teeth is connected to the drive axle via a respective spring element and has (or preferably assumes an initial position) an initial position in which it is fixed such that the spring element has a preload torque.
  • the impulse tooth or the impulse teeth of the escapement wheel each have at least two positions that they can occupy.
  • One of these positions is the home position, in which the impulse tooth is at a low energy level, and in which the impulse tooth is unless it is raised to its high energy level, held there, or in the energy transfer phase.
  • Another position is, for example, the clamping position, in which the impulse tooth has its high energy level and into which the pulse tooth is brought during the rotation of the escapement wheel ( ⁇ ) before returning to the starting position after releasing its energy.
  • the starting position can also be referred to as the position in which the impulse tooth or the spring element has the lowest tension during one cycle of the escapement wheel.
  • the tensioning position can in turn also be referred to as the position in which the impulse tooth or the spring element has the highest tension during one cycle of the escapement wheel.
  • the tension of the impulse tooth or the spring element is therefore basically lower in the starting position than in the tensioned position.
  • the present invention is characterized in that the impulse tooth has a preload torque (>0 Nm) while in the home position.
  • the impulse tooth is already prestressed with a moment in its initial position.
  • the escapement system Due to the fact that in the present invention the at least one impulse tooth has a pretensioning moment in its starting position, the escapement system according to the invention has an energy store integrated in the escapement wheel, which can transmit the impulse directly or indirectly (e.g. via an anchor) to a balance wheel.
  • This energy store is integrated in each individual pulse tooth or in each group of pulse teeth of the escapement wheel.
  • the inertia of the stimulating elements poses a major challenge. It largely determines the size of the escapement wheels and the frequency of the balance wheel. For vibrations of 2.5 Hz and higher, typically more than 60% (usually more than 70%) of the energy is consumed in accelerating the stimulating elements.
  • the present invention minimizes the inertia of the impeller, thereby expending less energy in accelerating the impeller. This can significantly increase the efficiency of the escapement system.
  • n M H + M L / 2 ⁇ E 1 / ⁇ a / M A With M A ⁇ M H , where ⁇ is the efficiency, ML the pretensioning moment in the starting position or the low moment, MH the moment in the tensioning position or the high moment, E1 the kinetic energy of the escapement parts moving during the impulse at the end of the impulse, ⁇ the angle of rotation of the escapement wheel impulse and M A indicates the torque of the escape wheel.
  • M A the efficiency of the escapement increases significantly, since more of the energy ( ⁇ ⁇ M A ) required for tensioning can be stored.
  • Minimal inertia and the highest possible pretensioning moment M L of the impulse tooth or impulse teeth in the starting position thus contribute significantly to the high efficiency of the escapement system according to the invention, whereas a maximum of 50% of the available energy can be used without pretensioning in the starting position.
  • a preferred embodiment of the present invention is characterized in that the escapement system has at least one resting element which has at least one clamping surface which is at a Rotation of the escape wheel moves the pulse tooth from the home position to a cocking position.
  • the quiescent moment preferably has two clamping surfaces.
  • the impulse tooth can be pressed against the at least one clamping surface by rotating the escapement wheel with a torque that is greater than the pretensioning moment of the at least one spring element in the starting position of the at least one impulse tooth so that it can be pushed out of the starting position is moved into the clamping position and thereby increases the biasing torque of the at least one spring element.
  • the at least one resting element is preferably designed as an anchor, as a resting lever or as part of a balance.
  • the at least one impulse tooth assumes an initial position in which it is fixed in such a way that the spring element has a pretensioning moment.
  • the at least one pulse tooth has an initial position in which it is fixed in such a way that the spring element has a pretensioning moment and assumes this initial position.
  • the impulse tooth is moved from the starting position to another position, e.g. the clamping position.
  • the at least one impulse tooth or the impulse teeth have a (preload) moment > 0 in every position that it or they can assume.
  • the escapement wheel has a plurality of impulse teeth.
  • each of the impulse teeth is connected to the drive axle via a spring element.
  • each of the impulse teeth is formed in one piece with the respective spring element via which it is connected to the drive axle.
  • the at least one escapement wheel has at least one stop which fixes the impulse tooth in its initial position.
  • the at least one impulse tooth can be pressed against the stop in order to be fixed in its prestressed starting position.
  • the at least one escapement wheel has as many stops as there are pulse teeth.
  • the stops are arranged on the rest wheel.
  • a further preferred embodiment of the escapement system according to the invention is characterized in that the escapement system has one or more resting teeth.
  • the resting teeth are preferably arranged on the escapement wheel, particularly preferably on the resting wheel.
  • At least one escapement wheel (or the at least one escapement wheel) is designed in two parts and comprises an impulse wheel as the first part, which has the at least one impulse tooth, and as the second part a rest wheel, with the impulse wheel and the rest wheel are fixed in a fixed position relative to one another, and preferably the running of the drive train on the rest wheel can be controlled or is controlled.
  • the escapement system comprises several escapement wheels, for example all escapement wheels or only some of the escapement wheels can be made in two parts.
  • At least one escapement wheel (or the at least one escapement wheel) is designed in one piece and in two levels, with one of the two levels having the at least one impulse tooth, and with the running of the drive train on the rest wheel preferably being controllable or .
  • the escapement system comprises several escapement wheels, for example all escapement wheels or only some of the escapement wheels can be designed in one piece and on two levels.
  • the inhibition system according to the invention has an efficiency of more than 30%, preferably more than 35%.
  • the present invention also relates to a measuring device which includes the escapement system according to the invention.
  • the measuring device comprises a rate controller.
  • the measuring device according to the invention is preferably a time measuring device, in particular a watch.
  • the escapement system here comprises a drive axle 11 and an escapement wheel, which has a plurality of impulse teeth 1, 8, the impulse teeth 1, 8 being connected to the drive axle 11 via spring elements.
  • Each of the pulse teeth 1, 8 is connected to the drive axle 11 via a spring element.
  • the pulse teeth have a starting position which they can assume, as can be seen at pulse tooth 8 by way of example. In this initial position, the impulse tooth is fixed in such a way that the spring element, via which the rest tooth is connected to the drive axle, has a pretensioning moment. However, the impulse teeth can also assume a clamped position, as can be seen in impulse tooth 1 as an example.
  • the escapement wheel shown is made in two parts. As a first part, it comprises an impulse wheel, which has the impulse teeth 1, 8, and as a second part, a rest wheel, which has rest teeth 3, 9.
  • a first part it comprises an impulse wheel, which has the impulse teeth 1, 8, and as a second part, a rest wheel, which has rest teeth 3, 9.
  • Figure 2a Both parts are shown before the escape wheel is assembled. Here the spring elements connected to the impulse teeth are in a relaxed state.
  • Figure 2b (as also in 1 ) the two parts are shown after assembly and twisting of the hubs towards each other.
  • the momentum wheel and the rest wheel are fixed in a fixed position relative to each other.
  • the impulse teeth are pressed against stops 12, 13 located on the rest wheel, so that the impulse teeth are fixed in the starting position in which they have a pretensioning moment.
  • the resting element 5 has two clamping surfaces 2, 7 which, when the escapement wheel rotates, move the impulse teeth 1, 8 from the initial position into the clamping position.
  • the respective impulse tooth 1 is pressed against the clamping surface 2 by turning the escapement wheel with a torque that is greater than the pretensioning moment of the spring element in the starting position of the impulse tooth 1, so that it is moved from the starting position into the clamping position and thereby moves increases the preload torque of the spring element, as well as this in 1 is shown using the example of pulse tooth 1.
  • Figures 3a to 6a and Figures 3b to 6b now show the function of the escapement system during rotation of the escapement wheel by the drive axle.
  • Figures a and b of the same number show the escapement system at the same time from different perspectives, one from the front and one from the back.
  • the impulse tooth 1 is first released as soon as it no longer rests on the clamping surface 2. After the pulse tooth 1 has been released, it hits the lifting surface 6 and drives the armature 5, as is shown in FIGS Figures 4a and 4b will be shown. Here, the impulse tooth 1 relaxes from its high preload level M H to its low level M L . Towards the end or after the energy has been released, the clamping surface 7 has been moved in front of the impulse tooth 8 by the movement of the armature. The rest surface 4 now releases the escapement wheel for re-tensioning by releasing the rest tooth 3.
  • the impulse tooth 8 is released as soon as it no longer rests on the clamping surface 7 .
  • the pulse tooth 8 hits the lifting surface on the input side of the armature and drives the armature 5, as shown in FIGS Figures 6a and 6b will be shown.
  • the impulse tooth 8 relaxes from its high preload level M H to its low level M L .
  • the resting surface 10 now releases the resting tooth 9 of the resting wheel, which triggers the pretensioning of the next pulse tooth.
  • FIG. 1 illustrates showing the energy diagram of the escapement. There it is shown that due to the high preload level M L of the impulse teeth in the home position, the amount of energy 14 transferred is very high compared to the amount of energy 15 lost. It is thus readily apparent from the diagram that the highest possible pretensioning moment M L of the impulse teeth in the starting position contributes significantly to the efficiency of the escapement system according to the invention. On the other hand, without pretensioning in the starting position, a maximum of 50% of the available energy could be used.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
EP19724433.8A 2018-07-20 2019-05-13 Hemmungssystem und das hemmungssystem umfassendes messgerät Active EP3824351B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018212113.3A DE102018212113A1 (de) 2018-07-20 2018-07-20 Hemmungssystem und das Hemmungssystem umfassendes Messgerät
PCT/EP2019/062205 WO2020015889A1 (de) 2018-07-20 2019-05-13 Hemmungssystem und das hemmungssystem umfassendes messgerät

Publications (2)

Publication Number Publication Date
EP3824351A1 EP3824351A1 (de) 2021-05-26
EP3824351B1 true EP3824351B1 (de) 2022-11-30

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ID=66554384

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Application Number Title Priority Date Filing Date
EP19724433.8A Active EP3824351B1 (de) 2018-07-20 2019-05-13 Hemmungssystem und das hemmungssystem umfassendes messgerät

Country Status (5)

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US (1) US12032334B2 (ja)
EP (1) EP3824351B1 (ja)
JP (1) JP7441835B2 (ja)
DE (1) DE102018212113A1 (ja)
WO (1) WO2020015889A1 (ja)

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1867947A (en) * 1930-01-10 1932-07-19 Hasler Ag Escapement wheel for anchor escapements
FR1009853A (fr) * 1948-07-02 1952-06-04 Mécanisme d'échappement perfectionné
GB708043A (en) 1951-10-06 1954-04-28 Standard Oil Dev Co Improvements in or relating to the reduction of acidity in synthetic ester lubricants
US2717488A (en) 1952-01-07 1955-09-13 Gen Horlogere Noiseless anchor-escapement, particularly for clock-works
CH350611A (de) * 1959-07-28 1960-11-30 Uhrenfabrik Langendorf Uhr mit elektromagnetischem Antrieb
GB969473A (en) * 1959-11-27 1964-09-09 Davall & Sons Ltd Improvements in or relating to clockwork escapement mechanisms
US4211401A (en) * 1978-11-13 1980-07-08 Hedstrom Co. Swing having electrically rewound spring motor drive
GB8608270D0 (en) * 1986-04-04 1986-05-08 Jones S Ground-engaging wheels for vehicles
JP2777377B2 (ja) * 1988-10-12 1998-07-16 タカタ株式会社 テンションレデュース機構付シートベルト巻取り装置
TWI461865B (zh) * 2006-06-23 2014-11-21 Omega Sa 用於機械式時計機心之擺輪游絲調節系統及具有此系統之時計
JP4849998B2 (ja) * 2006-08-29 2012-01-11 セイコーインスツル株式会社 機械式時計の脱進機
US20110174914A1 (en) * 2010-01-20 2011-07-21 Gimmal Co., Ltd. Connector device to prevent person from falling
EP2455821B2 (fr) * 2010-11-18 2018-11-14 Nivarox-FAR S.A. Mobile de transmission d'énergie
CH705300B1 (fr) * 2011-07-21 2014-03-14 Manuf Et Fabrique De Montres Et Chronometres Ulysse Nardin Le Locle S A Roue d'échappement.
DE102012214415B4 (de) * 2012-08-14 2021-08-19 Continental Teves Ag & Co. Ohg Anordnung mit einem Zahnrad und einem Klinkenrad sowie elektromechanische Park- oder Feststellbremse
CH708043B1 (fr) 2013-05-08 2018-02-15 Mft Et Fabrique De Montres Et Chronometres Ulysse Nardin Le Locle S A Roue d'échappement.
CH710845B1 (de) * 2015-03-13 2018-11-30 Schlumpf Innovations Gmbh Ankerhemmung für mechanisches Uhrwerk.
EP3070537A1 (fr) * 2015-03-18 2016-09-21 L. Leroy S.A. Base de temps comportant un echappement a impulsion directe et a force constante
EP3121661B1 (fr) * 2015-07-21 2018-05-23 Cartier International AG Mécanisme d'échappement direct à force constante
EP3293583A1 (fr) * 2016-09-07 2018-03-14 Dominique Renaud SA Mecanisme d'echappement
CH713616B1 (de) * 2017-03-23 2020-11-13 Schlumpf Innovations Gmbh Ankerhemmung für ein mechanisches Uhrwerk.
JP7006065B2 (ja) * 2017-09-14 2022-01-24 セイコーエプソン株式会社 時計用部品、時計用ムーブメントおよび時計

Also Published As

Publication number Publication date
JP7441835B2 (ja) 2024-03-01
EP3824351A1 (de) 2021-05-26
JP2021531479A (ja) 2021-11-18
WO2020015889A1 (de) 2020-01-23
US12032334B2 (en) 2024-07-09
DE102018212113A1 (de) 2020-01-23
US20210286320A1 (en) 2021-09-16

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