EP2339410B1 - Dynamometrische Vorrichtung zur Anzeige der Drehmomentreserve des Federgehäuses einer Uhr - Google Patents

Dynamometrische Vorrichtung zur Anzeige der Drehmomentreserve des Federgehäuses einer Uhr Download PDF

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Publication number
EP2339410B1
EP2339410B1 EP09180823A EP09180823A EP2339410B1 EP 2339410 B1 EP2339410 B1 EP 2339410B1 EP 09180823 A EP09180823 A EP 09180823A EP 09180823 A EP09180823 A EP 09180823A EP 2339410 B1 EP2339410 B1 EP 2339410B1
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EP
European Patent Office
Prior art keywords
ratchet
barrel
click
torque
spring
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
EP09180823A
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English (en)
French (fr)
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EP2339410A1 (de
Inventor
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.)
Blancpain SA
Original Assignee
Blancpain SA
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Publication date
Application filed by Blancpain SA filed Critical Blancpain SA
Priority to EP09180823A priority Critical patent/EP2339410B1/de
Priority to JP2010290005A priority patent/JP5161953B2/ja
Priority to US12/979,131 priority patent/US8356930B2/en
Priority to KR1020100136292A priority patent/KR101253473B1/ko
Priority to CN2010106232220A priority patent/CN102183884B/zh
Publication of EP2339410A1 publication Critical patent/EP2339410A1/de
Priority to HK12102520.1A priority patent/HK1162208A1/xx
Application granted granted Critical
Publication of EP2339410B1 publication Critical patent/EP2339410B1/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
    • G04B9/00—Supervision of the state of winding, e.g. indicating the amount of winding
    • G04B9/005—Supervision of the state of winding, e.g. indicating the amount of winding by optical indication of the amount of winding

Definitions

  • the invention relates to the field of watch mechanisms driven by one or more springs wound by a winding crown or an automatic winding rotor, or the like.
  • the invention relates to a watch torque torque reserve torque gauge device, which comprises a turntable, a barrel, and a barrel ratchet arranged to cooperate with a ratchet catch to maintain accumulated, in a spring that includes said barrel, the mechanical energy stored by the latter, said ratchet pawl pivotable about a ratchet pivot axis, between a meshing position in which at least one tooth of said pawl cooperates with said ratchet, and a disengagement position in which each tooth of said pawl fades before rotation of the ratchet during an arming maneuver of said barrel, said ratchet pawl being biased towards said ratchet under the action of a ratchet spring of ratchet.
  • a spiral spring in particular a mainspring, is a mechanical member whose response is not linear as a function of time.
  • the torque curve delivered as a function of the number of revolutions of the spring is a hysteresis curve between the arming curve and the disarming curve, and whose variations are sudden at the end of arming and at the end of disarming, while they are closer to a linear response in an intermediate domain, distant from one or two turns of the end of arming, respectively from the end of disarming. It is therefore useful for the user to know, at the same time, the torque reserve of the barrel spring or springs that comprises its mechanism, and also the optimum zone, corresponding to the intermediate range mentioned above, during which the operation of the clock mechanism is the most regular and the most accurate. Of course, it is advisable to draw the attention of the user to avoid an excessive reassembly which can damage a spring at the end of arming.
  • the document DE 225 092 describes an improved indicator mounted on a pivoting arm about a pivot axis integral with the plate, the pivoting arm carrying the axis of the ratchet pawl.
  • This pivoting arm has a nose driven by a tooth rotated by the barrel drum.
  • the patent DE 181 980 proposed an innovative solution to this problem by introducing into the mechanism a compensation spring.
  • the ratchet of the barrel cooperates, in known manner, with a pawl mounted on a ratchet support.
  • the latter is pivotally mounted about a pivot axis which is attached to the plate of the movement.
  • a helical compensating spring is attached, on the one hand to the plate, and on the other hand to the pawl support, which supports an indicator or is directly connected to such an indicator.
  • the compensating spring is stretched under the effect of the pressure of the mainspring, and therefore the ratchet, on the pawl.
  • the object of the invention is to propose a simple and compact device, with a very small number of components, giving with good reliability to the user the indication of the reserve of torque available at the level of the mainspring.
  • the components must be at least as reliable as the other components of the timepiece, and their implementation must not weaken any of these.
  • the invention relates to a timepiece comprising a torque gauge torque watch moment reserve device as defined by claim 1.
  • the invention relates to the field of watch mechanisms driven by one or more springs wound by a winding crown or an automatic winding rotor, or the like.
  • the invention more particularly relates to a dynamometric device 100, designed as a torque reserve indicator.
  • barrel of timepiece This timepiece, not shown in detail in the figures, comprises, in known manner, at least one plate P, at least one barrel, and at least one barrel ratchet 2.
  • This barrel ratchet 2 is arranged to cooperate by its teeth 2a with a ratchet pawl 3 to maintain accumulated in a barrel spring that includes the barrel mechanical energy transmitted to the spring during its arming.
  • the barrel spring is conventionally armed or reassembled by a winding crown and / or by at least one winding rotor in the case of a self-winding movement.
  • the ratchet pawl 3 is pivotally mounted about a ratchet pivot pin 10 fixed to a support 12.
  • the pawl 3 is movable between a meshing position and a disengaging position.
  • the engagement position of the pawl 3 is that in which at least one tooth 31 of the ratchet pawl 3, at an end opposite this pawl pivot pin 10, cooperates with one of the teeth 2a of the ratchet of the barrel 2 for the ratchet immobilize in the direction of disarming.
  • the detent position of the pawl 3 is the one in which each tooth 31 that the ratchet pawl 3 erases in front of the toothing 2a and allows the rotation of the barrel ratchet 2 during a winding operation of the barrel.
  • the ratchet pawl 3 is permanently biased towards the barrel ratchet 2 under the action of a ratchet spring 4.
  • This ratchet catch spring 4 is preferably a flat leaf spring, having a fixed first end. 11 relative to a support, and a second free end of the opposite side.
  • a stop limits the stroke of the ratchet pawle 3 opposite the barrel ratchet 2
  • a stop limits the stroke of the free end of the ratchet spring 4 on the side of the barrel ratchet 2.
  • these stops are combined and constituted by a single component fixed on the support 12.
  • the dynamometric device 100 comprises a spring blade 1, a first end of which is fixed rigidly to the plate P or at a fixed point relative to the latter, by at least one, preferably at least two points fastening 7, by screw, pin, or the like.
  • the spring blade 1 preferably extends in a plane parallel to that of the barrel ratchet 2, and comprises, in its middle part, an elastic arm 8 capable of flexing under the action of the disarming torque of the mainspring spring like this will be explained in more detail below.
  • the ratchet support 12, which supports the ratchet pivot pin 10, is constituted by the elastic arm 8 or is fixed thereto.
  • the support 12 constitutes the second end of the spring blade 1 which is opposite to the attachment points 7.
  • the dynamometric device comprises, preferably in the vicinity of this second end of the elastic arm 8, opposite to the first attachment end to the plate, a needle 6 designed able to visualize the torque reserve of the cylinder, in cooperation with a graphical scale or graduated which constitutes a barrel torque reserve indicator 5.
  • the elastic arm 8 is substantially radial with respect to the axis of revolution of the barrel ratchet 2, its second end being directed outwards.
  • the indicator needle 6 is movable in front of the torque reserve indicator 5, which comprises a graphic or graduated scale that includes said platen or a bridge fixed thereto, and which successively displays the torque available at the outlet of the barrel during the disarming of the mainspring, here between two pins 50 and 51.
  • the flat ratchet catch spring 4 is fixed, at its first fixed end 11, to a support which is constituted by the support 12 of the ratchet catch 3.
  • the leaf spring 1 is integral and incorporates the elastic arm 8 and the ratchet support 12.
  • the elastic arm 8 is movable between an arming position where the resisting torque that it exerts on the ratchet is equal to the maximum torque exerted by the barrel spring which is fully armed, and a disarming position which corresponds to its equilibrium position where it exerts a zero torque on said ratchet and where the mainspring is completely disarmed.
  • This arm 8 is flexible between these two positions, the stiffness of the arm can vary to allow to display the available torque on a more or less extended scale.
  • the elastic arm 8 is fixed on a fixed bridge of the plate around a fixed point located in the vicinity of the axis of the barrel ratchet 2, and is deformed in a plane parallel to that of the barrel ratchet 2 under the action of a torque exerted by said mainspring.
  • the winding of the mainspring is effected in the direction of the arrow A, as is visible in the figures, namely in the counter-clockwise direction. It will be understood that, the more the barrel spring is being armed, the more torque there is in the barrel ratchet 2. This torque is exerted during the rotation of the barrel ratchet 2 in the clockwise direction in the case of the figures. on the toothing 31 of the ratchet catch 3.
  • the latter may have only one tooth 31, and remain very economical, unlike many power reserve indication systems where the ratchet is a complex piece, comprising at least a toothed sector, and is much more expensive.
  • the figures illustrate a preferred example in which the equilibrium position of the spring blade 1 is the disarming position, and where all other positions of the blade spring 1 are armed positions.
  • the torque reserve indication is thus, as a dynamometric reference with respect to a flat spring, which is extremely robust, inexpensive, and compact, and that the dynamometric device 100 according to the invention does not depend in any way on the winding mode, either by a winding crown or by an automatic winding rotor.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Springs (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Claims (8)

  1. Zeitmessgerät, umfassend eine dynamometrische Vorrichtung (100) zum Anzeigen der Federhaus-Kräftepaarreserve des Zeitmessgeräts, das eine Platine, ein Federhaus und ein Federhaus-Sperrrad (2) umfasst, das derart vorgesehen ist, dass es mit einem Sperrrad-Sperrkegel (3) zusammenwirkt, um in einer Feder, die zum Federhaus gehört, die von diesem Letzteren gespeicherte mechanische Energie zu erhalten, wobei dieser Sperrrad-Sperrkegel (3) um eine Sperrkegelschwenkachse (10) zwischen einer Eingriffsposition, in der wenigstens ein Zahn (31) des Sperrrad-Sperrkegels (3) mit dem Federhaus-Sperrrad (2) zusammenwirkt, und einer ausgerückten Position drehen kann, in der sich jeder Zahn (31) des Sperrrad-Sperrkegels (3) bei der Drehung des Federhaus-Sperrrads (2) während einem Manöver zum Spannen des Federhauses zurückzieht, wobei der Sperrrad-Sperrkegel (3) unter der Einwirkung einer Sperrrad-Sperrkegelfeder (4) zum Federhaus-Sperrrad (2) zurückgestellt wird, welche Vorrichtung zudem eine Federklinge (1) umfasst, die einen elastischen Arm (8), wovon ein erstes Ende starr an der Platine oder an einem Punkt, der ortsfest im Verhältnis zu dieser Letzteren ist, befestigt ist, und im Bereich eines zweiten Endes des elastischen Arms (8), das dem ersten Ende entgegengesetzt ist, ein Anzeigeorgan (6) umfasst, das in Verbindung mit einer graphischen oder mit Gradteilung versehenen Skala die Sichtbarmachung der Kräftepaarreserve des Federhauses ermöglicht, dadurch gekennzeichnet, dass die Sperrkegelschwenkachse (10) auf einem Sperrkegelträger (12) montiert ist, der vom elastischen Arm (8) gebildet ist oder an diesem Letzteren befestigt ist.
  2. Zeitmessgerät nach Anspruch 1, dadurch gekennzeichnet, dass der elastische Arm (8) merklich radial im Verhältnis zur Drehachse des Federhaus-Sperrrads (2) angeordnet ist.
  3. Zeitmessgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Sperrkegelträger (12) auf der dem elastischen Arm (8) gegenüberliegenden Seite einen Anzeigezeiger (6) umfasst, der das Anzeigeorgan bildet, das sich vor einer graphischen oder mit Gradteilung versehenen Skala (5), welche zur Platine oder zu einer an dieser Letzteren befestigten Brücke gehört, bewegen kann und das das am Ausgang des Federhauses zur Verfügung stehende Kräftepaar sichtbar macht.
  4. Zeitmessgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sperrrad-Sperrkegelfeder (4) an einem Ende (11), das demjenigen, das sich an den Sperrrad-Sperrkegel (3) anlehnt, entgegengesetzt ist, am Sperrkegelträger (12) befestigt ist.
  5. Zeitmessgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Federklinge (1) aus einem Stück besteht und dass sie den elastischen Arm (8) und den Sperrkegelträger (12) einschliesst.
  6. Zeitmessgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der elastische Arm (8) derart beschaffen ist, dass er sich zwischen einer Spannungsposition, in der das Widerstandsmoment, das er auf das Federhaus-Sperrrad (2) ausübt, gleich ist, wie das maximale Moment, das von der Federhausfeder ausgeübt wird, wenn sie völlig gespannt ist, und einer Entspannungsposition bewegen kann, die seiner Gleichgewichtsposition entspricht, in der er auf das Federhaus-Sperrrad (2) ein Nullmoment ausübt und in der die Federhausfeder völlig entspannt ist.
  7. Zeitmessgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der elastische Arm (8) um einen ortsfesten Punkt, der sich im Bereich der Welle des Federhaus-Sperrrads (2) befindet, an einer mit der Platine verbundenen Brücke befestigt ist und derart beschaffen ist, dass er sich unter der Einwirkung eines von der Federhausfeder ausgeübten Kräftepaars in einer Ebene verformt, die parallel zu derjenigen des Federhaus-Sperrrads (2) ist.
  8. Zeitmessgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Sperrrad-Sperrkegel (3) einen einzigen Zahn (31) umfasst.
EP09180823A 2009-12-28 2009-12-28 Dynamometrische Vorrichtung zur Anzeige der Drehmomentreserve des Federgehäuses einer Uhr Active EP2339410B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP09180823A EP2339410B1 (de) 2009-12-28 2009-12-28 Dynamometrische Vorrichtung zur Anzeige der Drehmomentreserve des Federgehäuses einer Uhr
JP2010290005A JP5161953B2 (ja) 2009-12-28 2010-12-27 時計の香箱残存トルクを指示するための動力測定デバイス
US12/979,131 US8356930B2 (en) 2009-12-28 2010-12-27 Dynamometric device for indicating the remaining barrel torque in a timepiece
KR1020100136292A KR101253473B1 (ko) 2009-12-28 2010-12-28 시계내에 남아있는 배럴토크를 표시하기 위한 동력계 장치
CN2010106232220A CN102183884B (zh) 2009-12-28 2010-12-28 用于指示钟表中的剩余发条盒力矩的测力装置
HK12102520.1A HK1162208A1 (en) 2009-12-28 2012-03-13 Dynamometric device for indicating the remaining barrel torque in a timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09180823A EP2339410B1 (de) 2009-12-28 2009-12-28 Dynamometrische Vorrichtung zur Anzeige der Drehmomentreserve des Federgehäuses einer Uhr

Publications (2)

Publication Number Publication Date
EP2339410A1 EP2339410A1 (de) 2011-06-29
EP2339410B1 true EP2339410B1 (de) 2013-03-27

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Application Number Title Priority Date Filing Date
EP09180823A Active EP2339410B1 (de) 2009-12-28 2009-12-28 Dynamometrische Vorrichtung zur Anzeige der Drehmomentreserve des Federgehäuses einer Uhr

Country Status (6)

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US (1) US8356930B2 (de)
EP (1) EP2339410B1 (de)
JP (1) JP5161953B2 (de)
KR (1) KR101253473B1 (de)
CN (1) CN102183884B (de)
HK (1) HK1162208A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102540864B (zh) * 2011-12-14 2013-12-18 轻工业钟表研究所 一种发条力矩测试仪
CH707136B1 (fr) * 2012-10-30 2016-12-30 Parmigiani Fleurier S A Pièce d'horlogerie destinée à indiquer la réserve de marche.
CN104898395A (zh) * 2015-07-02 2015-09-09 济南大学 一种开合式能量显示装置
JP7327180B2 (ja) * 2020-01-27 2023-08-16 セイコーエプソン株式会社 時計

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1402862U (de)
DE132789C (de)
US623158A (en) 1899-04-18 Clock winding-indicator
US97186A (en) * 1869-11-23 Improvement in indicator for main-spring- of watches
DE181980C (de)
DE96562C (de)
DE319478C (de) 1920-03-13 Andreas Friedrich Duus Zange zum Biegen, Schneiden und Abmanteln von Isolierrohren
DE225092C (de)
DE109388C (de)
FR321499A (fr) 1902-05-22 1903-01-12 Raynal Gustave Signal avertisseur d'arret prochain appliqué aux pendules d'appartement
FR382836A (fr) 1907-10-10 1908-02-17 Keck Fridolina Dispositif indiquant le moment ou une horloge à ressort doit etre remontée
US904332A (en) * 1908-04-09 1908-11-17 Samuel Kahan Winding-indicator.
CH237432A (fr) * 1943-05-06 1945-04-30 Nordmann Bulliard Camille Indicateur automatique de l'état de tension d'un ressort moteur.
US2443558A (en) * 1945-07-05 1948-06-15 Carl U Frennesen Mainspring tension indicator for watches and similar mechanisms
FR942026A (fr) 1947-02-20 1949-01-27 Dispositif indiquant la nécessité de remonter les pendules avant l'arrêt complet des mouvements
CH596590B5 (de) * 1975-01-23 1978-03-15 Pforzheimer Uhren Rohwerke
DE7711670U1 (de) 1977-04-14 1977-08-25 Mahnke, Wilhelm-Werner, 2000 Hamburg Vorrichtung zum Anzeigen der Aufwindung von aufziehbaren Federwerken, insbesondere von Weckern o.dgl
EP0568499B1 (de) * 1992-04-29 1997-05-21 Exidel Sa Vorrichtung zur Anzeige der Gangreserve einer Uhr
CH690973A5 (fr) * 1996-12-19 2001-03-15 Asulab Sa Pièce d'horlogerie dont le mécanisme est entraîné par des moyens mécaniques et comprenant un dispositif d'indication de réserve de marche.
JP2001116856A (ja) * 1999-10-14 2001-04-27 Seiko Epson Corp ゼンマイ装置、それを有した時計および電子機器
DE60040591D1 (de) * 2000-03-20 2008-12-04 Audemars Piguet Renaud Et Papi Ratschenantriebsmechanismus für Aufzugssperrad in einer Uhr
JP3589189B2 (ja) 2001-03-26 2004-11-17 セイコーエプソン株式会社 時計の回転トルク測定装置およびその回転トルク測定方法
JP4475630B2 (ja) * 2004-01-27 2010-06-09 セイコーインスツル株式会社 変形セグメント歯車を含むぜんまい巻き状態表示装置付き時計
JP4619818B2 (ja) * 2005-02-22 2011-01-26 セイコーインスツル株式会社 パワーリザーブ表示機構及びこれを備えた機械式時計
DE602006004957D1 (de) * 2006-02-22 2009-03-12 Blancpain Sa Selbstaufzuguhr mit einem Gangreserveanzeiger
JP4836823B2 (ja) * 2007-02-09 2011-12-14 セイコーインスツル株式会社 時計の巻印残量表示機構及び巻印残量表示機構付時計
EP1970778B1 (de) * 2007-03-13 2009-09-16 Montres Breguet S.A. Uhr mit Anzeige der Gangreserve
DE202008000035U1 (de) * 2008-04-15 2008-07-03 Blumensath, Holger Anzeigeeinrichtung zur Ermittlung des Wartungszustandes einer Uhr

Also Published As

Publication number Publication date
EP2339410A1 (de) 2011-06-29
JP2011137819A (ja) 2011-07-14
HK1162208A1 (en) 2012-08-24
CN102183884B (zh) 2013-09-18
CN102183884A (zh) 2011-09-14
KR20110076817A (ko) 2011-07-06
US8356930B2 (en) 2013-01-22
JP5161953B2 (ja) 2013-03-13
KR101253473B1 (ko) 2013-04-12
US20110158055A1 (en) 2011-06-30

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