EP1538490B1 - Detent escapement for wrist-watches - Google Patents

Detent escapement for wrist-watches Download PDF

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Publication number
EP1538490B1
EP1538490B1 EP03027910A EP03027910A EP1538490B1 EP 1538490 B1 EP1538490 B1 EP 1538490B1 EP 03027910 A EP03027910 A EP 03027910A EP 03027910 A EP03027910 A EP 03027910A EP 1538490 B1 EP1538490 B1 EP 1538490B1
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EP
European Patent Office
Prior art keywords
finger
roller
spring
escapement
pin
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.)
Expired - Lifetime
Application number
EP03027910A
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German (de)
French (fr)
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EP1538490A1 (en
Inventor
Nicolas Georges Hayek
Thierry Conus
Jurin Andrés Cabezas
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.)
Montres Breguet SA
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Montres Breguet SA
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Filing date
Publication date
Application filed by Montres Breguet SA filed Critical Montres Breguet SA
Priority to DE60314156T priority Critical patent/DE60314156T2/en
Priority to EP03027910A priority patent/EP1538490B1/en
Priority to AT03027910T priority patent/ATE363673T1/en
Priority to SG200407217A priority patent/SG112952A1/en
Priority to US11/000,370 priority patent/US6942378B2/en
Priority to JP2004350896A priority patent/JP4444806B2/en
Priority to CNB2004100966865A priority patent/CN100552570C/en
Publication of EP1538490A1 publication Critical patent/EP1538490A1/en
Priority to HK05106166.0A priority patent/HK1073698B/en
Application granted granted Critical
Publication of EP1538490B1 publication Critical patent/EP1538490B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates, according to a first embodiment, to a detent escapement for a timepiece comprising an escape wheel provided with teeth, a plate secured to a balance wheel, said plate being equipped with a pallet pulse, a rocker-shaped blocker hinged on one axis, the first and second legs of said rocker respectively carrying a pallet rest and a first actuating finger, and an elastic member mounted on the plate and carrying a second finger actuating device capable of driving the first finger when the plate rotates in a first direction to actuate the blocker and to bypass without driving said first finger when the plate rotates in a second direction opposite the first.
  • a detent escapement as described above has already been proposed.
  • FIG. 402 of George Daniels' book entitled Art de Breguet (London 1975).
  • the system described shows a stopwatch escapement pivoted triggering therefore using a rocker-shaped blocker articulated on an axis.
  • a branch of the rocker is equipped with a pallet of rest cooperating with the teeth of the escape wheel.
  • the other branch cooperates with a spring device mounted on the plate secured to the balance.
  • This spring device is a very short blade capable of actuating both the latch when the plate rotates in one direction and to remain without effect on said latch when the plate rotates in the opposite direction.
  • FIG. 3524b An expansion escapement comprising a resilient member mounted on the plate, this member actuating in a direction of rotation of the plate a detent capable of disengaging a tooth from the escape wheel is shown in FIG. 3524b of the work of prof. Glaser titled: “Handbuch last Chronometrie und Uhrentechnik” This exhaust proposed by F. Berthoud in 1770 already is intended for a chronometer.
  • the device uses a relatively short leaf spring mounted on the plate by means of a kind of bow rotating with it. The end of the blade cooperates with the end of the trigger which is not strictly speaking a rocker but a flexible rod carrying a pallet of rest.
  • the object of the present invention is to propose a timepiece of small dimensions, for example a wristwatch, which is equipped with a detent escapement to replace for example the classic anchor escapement and to benefit from the advantages conferred by this exhaust.
  • a timepiece of small dimensions for example a wristwatch
  • a detent escapement to replace for example the classic anchor escapement and to benefit from the advantages conferred by this exhaust.
  • the timepiece of the present invention in addition to meeting the definition of the first paragraph of this description, is remarkable in that, according to claim 1, the elastic member is a spring comprising a plurality of turns wrapped around a center, this elastic member can take, for example, the form of a spiral spring.
  • the short spring of the previous exhausts has been replaced by a much longer spring requiring a much lower actuating force from the rocker which is responsible for causing it to bend.
  • the present invention also relates, according to a second embodiment, to a detent escapement for a timepiece comprising an escape wheel provided with teeth, a plate integral with a balance wheel, said plate being equipped with a pulse pallet and a first finger, a rocker-shaped blocker articulated on an axis, a first branch of said rocker carrying a pallet of rest, this rocker including an elastic member carrying a second finger actuating device capable of being driven by the first finger when the plate rotates in a first direction to actuate the blocker, and bypass without being driven said first finger when the plate rotates in a second direction opposite to the first.
  • This second embodiment differs from the first mode in that the elastic member is no longer disposed on the plate but on the latch-shaped latch.
  • the principle remains the same to know to propose a new escapement with relaxation adapted to equip a watch of small dimensions, for example a wristwatch, this new escapement also comprising a elastic member of great length to minimize the effort of actuation requested on the pendulum.
  • the timepiece of the present invention in addition to meeting the above definition relating to the second embodiment, is it remarkable that the elastic member comprises, as a first variant, a coil spring and in the second variant a spiral spring according to claims 6 and 13 respectively. Again, it is repeated, so we replaced the short spring of known exhausts by a much longer spring which requires a much lower actuating force from the balance which is responsible for bending.
  • the detent escapement comprises an escape wheel 2 provided with teeth 3. Without this being shown, the escape wheel is driven by the gear train of the watch which receives its driving force from the barrel.
  • the figures show a plate 4 mounted on the axis of a beam (not shown).
  • the plate 4 is equipped with a pallet 5 receiving pulses by the teeth 3 of the wheel 2.
  • the system also shows a blocker 6 in the form of a rocker articulated on an axis 8.
  • the blocker comprises a first branch 9 carrying a pallet rest 7 and a second leg 10 carrying a first actuating finger 11.
  • the rest pallet 7 cooperates with the teeth 3 of the wheel 2.
  • An elastic member 22 is mounted on the plate 4.
  • This elastic member 12 carries a second finger actuator 14 which is adapted to drive the first finger 11 when the plate 4 rotates in a first direction a to actuate the blocker 6 and to bypass the first finger 11, without driving, when the plate 4 rotates in a second direction b opposite to the first.
  • the originality of the present invention lies in the elastic member 12 which will allow to implement on a small watch a detent escapement.
  • the elastic member is a spring comprising a plurality of turns 15 wound around a center 16. It is therefore a question here of a spring of great length, extremely flexible and which requires the pendulum which actuates a minimum effort.
  • This spring can take many forms. It will preferably be chosen a blade wound on itself around a fixed point and held in a plane, such as a spiral spring 12, this winding may however be of another shape, a square or a rectangle for example.
  • the spiral spring 12 shown in Figures 1 to 11 is mounted coaxially to an axis 16 which carries the plate 4 and the balance (not shown).
  • the inner end 17 of the spiral spring 12 is fixed to the axis 16 which carries the plate 4.
  • the outer end 13 of the spiral spring 12 carries the second actuating finger 14 which has been discussed above, this second finger emerging in the environment of said outer end.
  • FIGS. 1 to 11 also show that the outer end 13 of the spiral spring 12 and the plate 4 comprise retaining means implemented to limit the fretting of the second finger 14 and to keep the spiral spring 12 within limits allowing drive, respectively bypassing the first finger 11 carried by the blocker 6. These retaining means will now be described.
  • the plate 4 carries a first pin 19 around which is engaged with clearance an opening 18 formed in the outer end 13 of the spiral spring 12.
  • the plate 4 also carries a second pin 20 against which can come to rest a tongue 21 terminating the outer end 13 of the spiral spring 12 said outer end 13 in the order and towards its end opening 18, the second finger 14 and the tongue 21.
  • the end of the pulse is shown in Figure 7.
  • the tooth 61 is about to leave the pallet 5 and the blocker is returning to its rest position, the pallet rest 7 being introduced into the space between the teeth 60 and 62.
  • the return of the blocker 6 to its rest position is achieved by means which are not shown in the drawing. It could be a simple leaf spring or spiral spring as described for example in the book by Huguenin, Guye and Gauchat entitled “Exhausts and Stepper Motors in Figure 17-4.”
  • the situation in Figure 7 also shows that the spiral spring 12 has relaxed, the pin 19 no longer pressing against the left bottom of the opening18.
  • Figure 8 shows the pallet 7 coming into contact with the tooth 62 of the wheel 2 which is stopped.
  • the plateau 4 continues its course in the direction of the arrow a and begins to travel its free additional arc until the completion of the first alternation.
  • the reverse supplementary arc is nearing completion as shown in Figure 9.
  • the plate rotates in the direction of the arrow b and is near the end of the second half cycle.
  • the blocker 6 is in resting position recalled that it is by a spring not illustrated reminder but which has been discussed about Figure 7.
  • the pallet rest 7 rests at the bottom of the tooth.
  • the branch 10 of the blocker rests against a locking pin 63.
  • the plate 4 has brought the second actuating finger 14 of the spiral spring 12 to pass over the first finger 11 of the blocker 6 and thus to bypass it, as can be seen in FIG. 10
  • This climbing is made possible by the configuration of the fingers 11 and 14 respectively showing humps 64 and 65 (see particularly Figure 1).
  • the spiral spring 12 has slightly crushed towards the top of FIG. 10 and it can be seen that the pin 19 touches the bottom of the opening 18.
  • Figure 11 shows the plateau position 4 just before the end of the second alternation, almost in neutral.
  • the plate 4 will reverse its direction and the second finger 14 of the spiral spring 12 will be able to drive again the first finger 11 of the blocker 6. A new cycle can then begin that leads to Figure 4.
  • FIGS. 12 to 15 The second embodiment of the invention produced according to a first variant, is illustrated in FIGS. 12 to 15.
  • the detent escapement comprises an escape wheel 2 provided with teeth 3.
  • the escape wheel 2 is driven by the cogwheel of the watch which receives from the barrel its driving force.
  • Figures 12 to 15 show a plate 4 mounted on the axis of a pendulum not shown.
  • the plate 4 is equipped with a pallet 5 receiving pulses by the teeth 3 of the wheel 2.
  • This plate still carries a first finger 30.
  • the exhaust further comprises a blocker 6 in the form of a rocker articulated on an axis 8.
  • This blocker comprises a first branch 9 carrying a pallet 7 cooperating with the teeth 3 of the wheel 2.
  • the rocker or blocker 6 comprises a resilient member 32.
  • This elastic member 32 carries a second actuating finger 31 which is arranged so that to be driven by the first finger 30 when the plate 4 rotates in a first direction a to actuate the blocker 6, and so as to bypass, without being driven, the first finger 30 when the plate 4 rotates in a second direction b opposite the first.
  • this second embodiment differs from the first mode in that the elastic member is no longer placed on the plate but on the rocker-shaped blocker, the originality of the invention residing in the elastic member for equipping a small watch, for example a wristwatch, with a detent escapement.
  • the elastic member is a coil-shaped spring 32. It is therefore again question here of a spring of great length, very flexible and which requires the pendulum which actuates a minimum of effort.
  • serpentine spring is meant a sinuous spring, corrugated and folded several times on itself and which can take the form shown in the drawing but also different from it.
  • the coil spring 32 is attached to the second leg 10 that the blocker 6 comprises.
  • the first end 33 of this spring is fixed to the axis 8 of articulation of the blocker 6.
  • the second end 34 of this spring emerges the second actuating finger 31.
  • FIGS. 12 to 14 show that the second end 34 of the coil spring 32 and the second leg 10 of the blocker 6 comprise retaining means adapted to limit the fretting of said second finger 31 and to maintain the coil spring 32 within limits allowing the second finger 31 to be driven by, respectively to bypass the first finger 30 carried by the plate 4.
  • retaining means may be envisaged, for example those which will now be described by way of example.
  • Figures 12 to 14 show that the second leg 10 of the blocker 6 carries first and second pins 35 and 36.
  • the second end 34 of the coil spring 32 has in the order and in the direction of the escape wheel 2 a first notch 37 in which is engaged the first pin 35, the second actuating finger 31, and a second notch 38 in which is engaged the second pin 36.
  • the coil spring 32 described above is an insert added to the second leg 10 of the blocker 6. However, this spring could be part of the blocker without being added thereafter.
  • Figure 15 shows a blocker or latch 6 made differently. In this embodiment, the coil spring is made in one piece with the second leg 10 of the blocker 6. In particular, the figure shows that the first end 39 of the coil spring originates in the material of which the second leg 10 of the blocker 6 is made and that the second actuating finger emerges from the environment of the second end 34 of the coil spring 32.
  • FIG. 15 shows that the second end 34 of the coil spring 32 and the second leg 10 of the blocker 6 comprise retaining means. 28 also shows that the second leg 10 of the blocker 6 is formed of first and second arms 40 and 41 between which said spring is located.
  • the retaining means comprise first and second spouts 42 and 43 which respectively extend said first and second arms 40 and 41.
  • the end 34 of the coil spring 32 comprises, in the order and in the direction of the escape wheel, a first cut 45 in which is engaged the second spout 43, the second finger 31 and a second cut 444 in which is engaged the first spout 42.
  • This blocker 6 is one piece with the coil spring 32 and the retaining means 42, 44; 43, 45 limiting the fretting of the second actuating finger 31 opens interesting manufacturing prospects using for example galvanic growth methods, chemical or physical etching or injection.
  • FIG. 16 The drawing is limited to the blocker or rocker 6, the other components of the exhaust being similar to those shown in FIGS. 12 to 14.
  • the expansion escapement partially illustrated in FIG. 16 differs from that illustrated in FIGS. 12 to 14 in that the elastic member 50 is a spiral spring 51.
  • the spiral spring 51 can be mounted in different ways on the blocker or rocker 6. One way of doing is shown in Figure 16.
  • the spiral spring 51 is mounted coaxially with the axis 8 on which is articulated the blocker 6
  • the inner end 58 of the spiral spring 51 is fixed to the hinge axis 8.
  • the second actuating finger 31 emerges in the environment of the second end 52 of the spiral spring 51.
  • the second end 52 of the spiral spring 51 and the second leg 10 which is provided with the blocker 6 comprise retaining means adapted to limit the state of the second finger 31 and to maintain the spiral spring within limits allowing the second actuating finger 31 to be driven by, respectively to bypass the first finger (30) carried by the plate 4.
  • these retaining means comprise first and second pins 53 and 54 carried by the second leg 10 of the blocker 6, these first and second pins being engaged respectively in first and second notches 55 and 56 which bear the second end 52 of the spiral spring 51.

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Abstract

The escapement has a blocker, and a plate (4) with an impulse pallet. Two arms (9, 10) of the blocker carry a rest pallet and an activation finger. A spiral spring (12) is mounted on the plate and includes coils winded around a center. Another activation finger drives the former finger when the plate rotates in one direction to activate the blocker and is prevented from driving the finger when rotated in opposite direction.

Description

La présente invention est relative, selon un premier mode d'exécution, à un échappement à détente pour pièce d'horlogerie comprenant une roue d'échappement munie de dents, un plateau solidaire d'un balancier, ledit plateau étant équipé d'une palette d'impulsion, un bloqueur en forme de bascule articulée sur un axe, les première et seconde branches de ladite bascule portant respectivement une palette de repos et un premier doigt d'actionnement, et un organe élastique monté sur le plateau et portant un second doigt d'actionnement susceptible d'entraîner le premier doigt quand le plateau tourne dans un premier sens pour actionner le bloqueur et de contourner sans l'entraîner ledit premier doigt quand le plateau tourne dans un second sens opposé au premier.The present invention relates, according to a first embodiment, to a detent escapement for a timepiece comprising an escape wheel provided with teeth, a plate secured to a balance wheel, said plate being equipped with a pallet pulse, a rocker-shaped blocker hinged on one axis, the first and second legs of said rocker respectively carrying a pallet rest and a first actuating finger, and an elastic member mounted on the plate and carrying a second finger actuating device capable of driving the first finger when the plate rotates in a first direction to actuate the blocker and to bypass without driving said first finger when the plate rotates in a second direction opposite the first.

Un échappement à détente répondant à la description ci-dessus a déjà été proposé. On en trouve une représentation imagée dans la figure 402 de l'ouvrage de George Daniels intitulé l'Art de Breguet (Londres 1975). Le système décrit montre un échappement de chronomètre à détente pivotée faisant donc appel à un bloqueur en forme de bascule articulée sur un axe. Une branche de la bascule est équipée d'une palette de repos coopérant avec les dents de la roue d'échappement. L'autre branche coopère avec un dispositif à ressort monté sur le plateau solidaire du balancier. Ce dispositif à ressort est une lame très courte susceptible d'actionner à la fois la bascule quand le plateau tourne dans un sens et de rester sans effet sur ladite bascule lorsque le plateau tourne dans le sens opposé. On trouve donc là le principe de tout échappement à détente dans lequel l'impulsion au balancier n'est donnée qu'une fois par oscillation pendant laquelle la roue d'échappement tourne d'un pas angulaire tandis que, dans l'échappement à ancre, ladite roue avance d'un demi-pas à chaque alternance. On mesure ici un des avantages apporté par l'échappement à détente puisque l'énergie perdue par suite de l'inertie de la roue d'échappement n'intervient qu'une fois par oscillation au lieu d'une fois par alternance.A detent escapement as described above has already been proposed. There is a pictorial representation in figure 402 of George Daniels' book entitled Art de Breguet (London 1975). The system described shows a stopwatch escapement pivoted triggering therefore using a rocker-shaped blocker articulated on an axis. A branch of the rocker is equipped with a pallet of rest cooperating with the teeth of the escape wheel. The other branch cooperates with a spring device mounted on the plate secured to the balance. This spring device is a very short blade capable of actuating both the latch when the plate rotates in one direction and to remain without effect on said latch when the plate rotates in the opposite direction. We thus find there the principle of any escapement with expansion in which the impulse with the balance is given only once by oscillation during which the escape wheel turns of an angular step while, in the escapement with anchor said wheel advances by half a step at each alternation. Here, one of the advantages of the detent escapement is measured since the energy lost as a result of the inertia of the escape wheel only occurs once per oscillation instead of once alternately.

Un échappement à détente comportant un organe élastique monté sur le plateau, cet organe actionnant dans un sens de rotation du plateau une détente apte à dégager une dent de la roue d'échappement est représentée sur la figure 3524b de l'ouvrage du prof. Glaser intitulé : "Handbuch dern Chronometrie und Uhrentechnik " Cet échappement proposé par F. Berthoud en 1770 déjà est destiné à un chronomètre. Le dispositif fait appel à un ressort à lame relativement courte monté sur le plateau au moyen d'une sorte d'archet tournant avec lui. L'extrémité de la lame coopère avec l'extrémité de la détente qui n'est pas à proprement parler une bascule mais une tige flexible portant une palette de repos.An expansion escapement comprising a resilient member mounted on the plate, this member actuating in a direction of rotation of the plate a detent capable of disengaging a tooth from the escape wheel is shown in FIG. 3524b of the work of prof. Glaser titled: "Handbuch last Chronometrie und Uhrentechnik" This exhaust proposed by F. Berthoud in 1770 already is intended for a chronometer. The device uses a relatively short leaf spring mounted on the plate by means of a kind of bow rotating with it. The end of the blade cooperates with the end of the trigger which is not strictly speaking a rocker but a flexible rod carrying a pallet of rest.

Des deux modes d'exécution qui viennent d'être brièvement décrits ci-dessus, on retiendra une construction convenant à des pièces d'horlogerie de grande dimension, comme des chronomètres ou des chronomètres de marine. Ces pièces sont appréciées pour leur grande précision, raison pour laquelle il est fait appel très souvent à un échappement à détente lui-même réputé pour sa grande précision. La grande dimension des pièces en question permet en effet de disposer de balanciers importants présentant une grande réserve d'énergie et un fort couple. Ceci permet donc de vaincre la force importante présentée par les ressorts-lames des antériorités citées ci-dessus et en général des constructions classiques faisant appel à un ressort en or. Dans l'échappement à détente on sait qu'à une première alternance il faut tendre le ressort pour dégager la palette de repos et qu'à une seconde alternance il faut détendre le même ressort pour l'amener à contourner la détente qui n'est alors pas actionnée.Of the two embodiments that have just been briefly described above, a construction suitable for large timepieces, such as chronometers or marine chronometers, will be retained. These parts are appreciated for their great precision, which is why it is very often called a relaxation exhaust itself renowned for its high accuracy. The large size of the parts in question makes it possible to have large balances with a large energy reserve and a strong torque. This thus makes it possible to overcome the significant force presented by the leaf springs of the prior art cited above and in general conventional constructions using a gold spring. In the detent escapement it is known that at a first alternation it is necessary to tension the spring to release the pallet of rest and that at a second alternation it is necessary to relax the same spring to cause it to bypass the trigger which is not then not operated.

Le but de la présente invention est de proposer une pièce d'horlogerie de petites dimensions, par exemple une montre-bracelet, qui soit équipée d'un échappement à détente pour remplacer par exemple l'échappement à ancre classique et pour bénéficier des avantages conférés par cet échappement. On comprendra cependant qu'utiliser les techniques antérieures connues et décrites ci-dessus conduirait à un échec puisque l'énergie développée par le balancier d'une montre-bracelet est bien inférieure à celle développée par une montre, ce balancier se montrant donc incapable de vaincre les forces agissant sur la détente.The object of the present invention is to propose a timepiece of small dimensions, for example a wristwatch, which is equipped with a detent escapement to replace for example the classic anchor escapement and to benefit from the advantages conferred by this exhaust. However, it will be understood that using the prior art techniques known and described above would lead to a failure since the energy developed by the pendulum of a wristwatch is much lower than that developed by a watch, this pendulum thus showing itself incapable of defeat the forces acting on the trigger.

Ainsi la pièce d'horlogerie de la présente invention, en plus qu'elle répond à la définition du premier paragraphe de cette description, est-elle remarquable en ce que, selon la revendication 1 l'organe élastique est un ressort comprenant une pluralité de spires enroulées autour d'un centre, cet organe élastique pouvant prendre, par exemple, la forme d'un ressort spiral. On a donc remplacé, dans l'échappement à détente de l'invention, le ressort court des échappements antérieurs par un ressort bien plus long demandant un effort d'actionnement bien plus faible de la part du balancier qui est chargé de le faire fléchir.Thus, the timepiece of the present invention, in addition to meeting the definition of the first paragraph of this description, is remarkable in that, according to claim 1, the elastic member is a spring comprising a plurality of turns wrapped around a center, this elastic member can take, for example, the form of a spiral spring. Thus, in the expansion escapement of the invention, the short spring of the previous exhausts has been replaced by a much longer spring requiring a much lower actuating force from the rocker which is responsible for causing it to bend.

La présente invention est également relative, selon un second mode d'exécution, à un échappement à détente pour pièce d'horlogerie comprenant une roue d'échappement munie de dents, un plateau solidaire d'un balancier, ledit plateau étant équipé d'une palette d'impulsion et d'un premier doigt, un bloqueur en forme de bascule articulée sur un axe, une première branche de ladite bascule portant une palette de repos, cette bascule incluant un organe élastique portant un second doigt d'actionnement susceptible d'être entraîné par le premier doigt quand le plateau tourne dans un premier sens pour actionner le bloqueur, et de contourner sans être entraîné ledit premier doigt quand le plateau tourne dans un second sens opposé au premier.The present invention also relates, according to a second embodiment, to a detent escapement for a timepiece comprising an escape wheel provided with teeth, a plate integral with a balance wheel, said plate being equipped with a pulse pallet and a first finger, a rocker-shaped blocker articulated on an axis, a first branch of said rocker carrying a pallet of rest, this rocker including an elastic member carrying a second finger actuating device capable of being driven by the first finger when the plate rotates in a first direction to actuate the blocker, and bypass without being driven said first finger when the plate rotates in a second direction opposite to the first.

Ce second mode d'exécution diffère du premier mode par le fait que l'organe élastique n'est plus disposé sur le plateau mais sur le bloqueur en forme de bascule. Pour le reste le principe reste le même à savoir proposer un nouvel échappement à détente apte à équiper une montre de petites dimensions, par exemple une montre-bracelet, ce nouvel échappement comportant aussi un organe élastique de grande longueur pour minimiser l'effort d'actionnement demandé au balancier.This second embodiment differs from the first mode in that the elastic member is no longer disposed on the plate but on the latch-shaped latch. For the rest the principle remains the same to know to propose a new escapement with relaxation adapted to equip a watch of small dimensions, for example a wristwatch, this new escapement also comprising a elastic member of great length to minimize the effort of actuation requested on the pendulum.

Ainsi la pièce d'horlogerie de la présente invention, en plus qu'elle répond à la définition ci-dessus relative au second mode d'exécution, est-elle remarquable en ce que l'organe élastique comporte en première variante un ressort serpentin et en seconde variante un ressort spiral selon les revendications 6 et 13 respectivement. Là également, on le répète, on a donc remplacé le ressort court des échappements connus par un ressort bien plus long ce qui demande un effort d'actionnement bien plus faible de la part du balancier qui est chargé de le faire fléchir.Thus, the timepiece of the present invention, in addition to meeting the above definition relating to the second embodiment, is it remarkable that the elastic member comprises, as a first variant, a coil spring and in the second variant a spiral spring according to claims 6 and 13 respectively. Again, it is repeated, so we replaced the short spring of known exhausts by a much longer spring which requires a much lower actuating force from the balance which is responsible for bending.

L'invention va être expliquée en détail ci-dessous par deux modes d'exécution donnés à être d'exemple, ces exécutions étant illustrées par les dessins annexés dans lesquels :

  • la figure 1 est une vue en plan du premier mode d'exécution de l'invention,
  • la figure 2 est une vue en perspective du mode d'exécution montré en figure 1,
  • la figure 3 est un agrandissement de la zone III de la figure 2,
  • les figures 4 à 11 sont des vues en plan du premier mode d'exécution de l'invention explicitant les différentes phases de fonctionnement de l'échappement illustré sur les figures 1 à 3.
  • la figure 12 est une vue en plan du second mode d'exécution de l'invention réalisé selon une première variante,
  • la figure 13 est une vue en perspective du mode d'exécution montré en figure 12.
  • la figure 14 est un agrandissement de la zone XIV de la figure 13,
  • la figure 15 montre une réalisation particulière de la bascule faisant partie de l'échappement réalisé selon la première variante illustrée en figure 12, et
  • la figure 16 montre une réalisation particulière de la bascule faisant partie de l'échappement réalisé selon le second mode d'exécution en seconde variante
The invention will be explained in detail below by two embodiments given by way of example, these embodiments being illustrated by the appended drawings in which:
  • FIG. 1 is a plan view of the first embodiment of the invention,
  • FIG. 2 is a perspective view of the embodiment shown in FIG. 1,
  • FIG. 3 is an enlargement of the zone III of FIG.
  • Figures 4 to 11 are plan views of the first embodiment of the invention explaining the different operating phases of the exhaust illustrated in Figures 1 to 3.
  • FIG. 12 is a plan view of the second embodiment of the invention produced according to a first variant,
  • Figure 13 is a perspective view of the embodiment shown in Figure 12.
  • FIG. 14 is an enlargement of the area XIV of FIG. 13,
  • FIG. 15 shows a particular embodiment of the rocker forming part of the escapement produced according to the first variant illustrated in FIG. 12, and
  • FIG. 16 shows a particular embodiment of the latch forming part of the escapement produced according to the second embodiment in second variant.

Le premier mode d'exécution de l'invention est illustré aux figures 1 à 11. L'échappement à détente comprend une roue d'échappement 2 munie de dents 3. Sans que cela soit représenté la roue d'échappement est entraînée par le rouage de la montre qui reçoit sa force motrice du barillet. Les figures montrent un plateau 4 monté sur l'axe d'un balancier (non représenté). Le plateau 4 est équipé d'une palette 5 recevant des impulsions par les dents 3 de la roue 2. Le système montre encore un bloqueur 6 en forme de bascule articulée sur un axe 8. Le bloqueur comporte une première branche 9 portant une palette de repos 7 et une seconde branche 10 portant un premier doigt d'actionnement 11. La palette de repos 7 coopère avec les dents 3 de la roue 2. Un organe élastique 22 est monté sur le plateau 4. Cet organe élastique 12 porte un second doigt d'actionnement 14 qui est apte à entraîner le premier doigt 11 quand le plateau 4 tourne dans un premier sens a pour actionner le bloqueur 6 et à contourner ce premier doigt 11, sans l'entraîner, quand le plateau 4 tourne dans un second sens b opposé au premier.The first embodiment of the invention is illustrated in Figures 1 to 11. The detent escapement comprises an escape wheel 2 provided with teeth 3. Without this being shown, the escape wheel is driven by the gear train of the watch which receives its driving force from the barrel. The figures show a plate 4 mounted on the axis of a beam (not shown). The plate 4 is equipped with a pallet 5 receiving pulses by the teeth 3 of the wheel 2. The system also shows a blocker 6 in the form of a rocker articulated on an axis 8. The blocker comprises a first branch 9 carrying a pallet rest 7 and a second leg 10 carrying a first actuating finger 11. The rest pallet 7 cooperates with the teeth 3 of the wheel 2. An elastic member 22 is mounted on the plate 4. This elastic member 12 carries a second finger actuator 14 which is adapted to drive the first finger 11 when the plate 4 rotates in a first direction a to actuate the blocker 6 and to bypass the first finger 11, without driving, when the plate 4 rotates in a second direction b opposite to the first.

Comme il en a déjà été question plus haut, l'originalité de la présente invention réside dans l'organe élastique 12 qui va permettre d'implanter sur une montre de petite dimension un échappement à détente. Ceci est possible si l'organe élastique est un ressort comprenant une pluralité de spires 15 enroulées autour d'un centre 16. Il est donc question ici d'un ressort de grande longueur, extrêmement flexible et qui demande au balancier qui l'actionne un minimum d'effort. Ce ressort peut prendre plusieurs formes. On choisira de préférence une lame enroulée sur elle-même autour d'un point fixe et maintenue dans un plan, comme un ressort spiral 12, cet enroulement pouvant cependant être d'une autre forme, un carré ou un rectangle par exemple.As has already been mentioned above, the originality of the present invention lies in the elastic member 12 which will allow to implement on a small watch a detent escapement. This is possible if the elastic member is a spring comprising a plurality of turns 15 wound around a center 16. It is therefore a question here of a spring of great length, extremely flexible and which requires the pendulum which actuates a minimum effort. This spring can take many forms. It will preferably be chosen a blade wound on itself around a fixed point and held in a plane, such as a spiral spring 12, this winding may however be of another shape, a square or a rectangle for example.

Le ressort spiral 12 montré sur les figures 1 à 11 est monté coaxialement à une axe 16 qui porte le plateau 4 et le balancier (non représenté). L'extrémité intérieure 17 du ressort spiral 12 est fixé à l'axe 16 qui porte le plateau 4. L'extrémité extérieure 13 du ressort spiral 12 porte le second doigt d'actionnement 14 dont il a été question ci-dessus, ce second doigt émergeant dans l'environnement de ladite extrémité extérieure.The spiral spring 12 shown in Figures 1 to 11 is mounted coaxially to an axis 16 which carries the plate 4 and the balance (not shown). The inner end 17 of the spiral spring 12 is fixed to the axis 16 which carries the plate 4. The outer end 13 of the spiral spring 12 carries the second actuating finger 14 which has been discussed above, this second finger emerging in the environment of said outer end.

Les figures 1 à 11 montrent également que l'extrémité extérieure 13 du ressort spiral 12 et le plateau 4 comportent des moyens de retenue mis en oeuvre pour limiter l'ébat du second doigt 14 et pour maintenir le ressort spiral 12 dans des limites permettant l'entraînement, respectivement le contournement du premier doigt 11 porté par le bloqueur 6. Ces moyens de retenue vont être décrits maintenant.FIGS. 1 to 11 also show that the outer end 13 of the spiral spring 12 and the plate 4 comprise retaining means implemented to limit the fretting of the second finger 14 and to keep the spiral spring 12 within limits allowing drive, respectively bypassing the first finger 11 carried by the blocker 6. These retaining means will now be described.

Le plateau 4 porte une première goupille 19 autour de laquelle est engagée avec jeu une ouverture 18 pratiquée dans l'extrémité extérieure 13 du ressort spiral 12. Le plateau 4 porte aussi une seconde goupille 20 contre laquelle est susceptible de venir s'appuyer une languette 21 terminant l'extrémité extérieure 13 du ressort spiral 12 ladite extrémité extérieure 13 comprenant dans l'ordre et en direction de son extrémité l'ouverture 18, le second doigt 14 et la languette 21.The plate 4 carries a first pin 19 around which is engaged with clearance an opening 18 formed in the outer end 13 of the spiral spring 12. The plate 4 also carries a second pin 20 against which can come to rest a tongue 21 terminating the outer end 13 of the spiral spring 12 said outer end 13 in the order and towards its end opening 18, the second finger 14 and the tongue 21.

On va décrire maintenant en détail le fonctionnement de l'échappement à détente en s'aidant des figures 4 à 11 qui illustrent différentes phases de ce fonctionnement.We will now describe in detail the operation of the detent escapement with the help of Figures 4 to 11 which illustrate different phases of this operation.

En figure 4, le plateau 4 tourne dans le sens de la flèche a. La goupille 19 bute sur le fond gauche de l'ouverture 18 ce qui a pour effet de tendre le ressort spiral 12 et d'amener le second doigt 14 du ressort spiral 12 en contact avec le premier doigt 11 du bloqueur 6. A ce moment la palette de repos 7 du bloqueur 6 est engagée à fond dans la dent 60 de la roue d'échappement 2 qui est bloquée.In Figure 4, the plate 4 rotates in the direction of the arrow a. The pin 19 abuts on the left bottom of the opening 18 which has the effect of tensioning the spiral spring 12 and bringing the second finger 14 of the spiral spring 12 in contact with the first finger 11 of the blocker 6. At this time the rest pallet 7 of the blocker 6 is fully engaged in the tooth 60 of the escapement wheel 2 which is locked.

Continuant sa course dans le sens de la flèche a le second doigt 14 (figure 5) entraîne le premier doigt 11 du bloqueur 6 et fait basculer ce dernier amenant la palette de repos 7 à la limite du dégagement de la dent 60. On remarquera ici que pendant cet entraînement, le premier doigt 11 exerce sur le second doigt 14 une force f dirigée vers la droite de la figure, cette force ayant tendance à faire tourner le ressort spiral 12 dans un sens anti-horaire autour de la première goupille 19. La seconde goupille 20 prévient cette rotation puisque la languette 21 qui termine le ressort spiral 12 vient s'appuyer précisément contre cette seconde goupille 20.Continuing its course in the direction of the arrow to the second finger 14 (Figure 5) drives the first finger 11 of the blocker 6 and tilts the latter bringing the pallet 7 to the limit of the release of the tooth 60. It will be noted here during this drive, the first finger 11 exerts on the second finger 14 a force f directed to the right of the figure, this force having a tendency to rotate the spiral spring 12 in a counterclockwise direction around the first pin 19. The second pin 20 prevents this rotation since the tongue 21 which terminates the spiral spring 12 comes to bear precisely against this second pin 20.

Comme on le voit sur la figure 6, la roue d'échappement 2 est libre et tourne dans le sens de la flèche e. Sa dent 61 entre en contact avec la palette 5 du plateau 4 ce qui a pour effet de donner une impulsion au plateau 4 et au balancier qui lui est lié.As seen in Figure 6, the escape wheel 2 is free and rotates in the direction of the arrow e. Its tooth 61 comes into contact with the pallet 5 of the plate 4 which has the effect of giving an impetus to the plate 4 and the pendulum which is connected thereto.

La fin de l'impulsion est représenté à la figure 7. La dent 61 est sur le point de quitter la palette 5 et le bloqueur est en train de retourner à sa position de repos, la palette de repos 7 s'introduisant dans l'espace séparant les dents 60 et 62. Le retour du bloqueur 6 à sa position de repos est réalisé par des moyens qui ne sont pas montrés au dessin. Ce pourrait être un simple ressort lame ou un ressort spiral comme décrit par exemple dans l'ouvrage de Huguenin, Guye et Gauchat intitulé "Echappements et Moteurs pas à pas à la figure 17-4. La situation de la figure 7 montre également que le ressort spiral 12 s'est détendu, la goupille 19 n'appuyant plus contre le fond gauche de l'ouverture18.The end of the pulse is shown in Figure 7. The tooth 61 is about to leave the pallet 5 and the blocker is returning to its rest position, the pallet rest 7 being introduced into the space between the teeth 60 and 62. The return of the blocker 6 to its rest position is achieved by means which are not shown in the drawing. It could be a simple leaf spring or spiral spring as described for example in the book by Huguenin, Guye and Gauchat entitled "Exhausts and Stepper Motors in Figure 17-4." The situation in Figure 7 also shows that the spiral spring 12 has relaxed, the pin 19 no longer pressing against the left bottom of the opening18.

La figure 8 montre la palette de repos 7 entrant en contact avec la dent 62 de la roue 2 qui est stoppée. Le plateau 4 continue sa course dans le sens de la flèche a et commence à parcourir son arc supplémentaire libre jusqu'à l'achèvement de la première alternance.Figure 8 shows the pallet 7 coming into contact with the tooth 62 of the wheel 2 which is stopped. The plateau 4 continues its course in the direction of the arrow a and begins to travel its free additional arc until the completion of the first alternation.

L'arc supplémentaire inverse est en voie d'achèvement comme le montre la figure 9. Le plateau tourne dans le sens de la flèche b et se trouve proche de la fin de la seconde alternance. Le bloqueur 6 est en position de repos rappelé qu'il est par un ressort rappel non illustré mais dont il a été question à propos de la figure 7. La palette de repos 7 repose au fond de la dent. La branche 10 du bloqueur repose contre une goupille d'arrêt 63.The reverse supplementary arc is nearing completion as shown in Figure 9. The plate rotates in the direction of the arrow b and is near the end of the second half cycle. The blocker 6 is in resting position recalled that it is by a spring not illustrated reminder but which has been discussed about Figure 7. The pallet rest 7 rests at the bottom of the tooth. The branch 10 of the blocker rests against a locking pin 63.

Continuant sa course dans le sens de la flèche b le plateau 4 a amené le second doigt d'actionnement 14 du ressort spiral 12à passer par dessus le premier doigt 11 du bloqueur 6 et donc à le contourner, comme cela est visible sur la figure 10. Cette escalade est rendue possible grâce à la configuration des doigts 11 et 14 montrant respectivement des dos d'âne 64 et 65 (voir particulièrement la figure 1). Le ressort spiral 12 s'est légèrement écrasé vers le haut de la figure 10 et l'on voit que la goupille 19 touche le bas de l'ouverture 18.Continuing its travel in the direction of the arrow b the plate 4 has brought the second actuating finger 14 of the spiral spring 12 to pass over the first finger 11 of the blocker 6 and thus to bypass it, as can be seen in FIG. 10 This climbing is made possible by the configuration of the fingers 11 and 14 respectively showing humps 64 and 65 (see particularly Figure 1). The spiral spring 12 has slightly crushed towards the top of FIG. 10 and it can be seen that the pin 19 touches the bottom of the opening 18.

Enfin la figure 11 montre la position plateau 4 juste avant la fin de la seconde alternance, presque au point mort. Le plateau 4 va inverser son sens et le second doigt 14 du ressort spiral 12 va pouvoir entraîner à nouveau le premier doigt 11 du bloqueur 6. Un nouveau cycle peut alors commencer qui ramène à la figure 4.Finally, Figure 11 shows the plateau position 4 just before the end of the second alternation, almost in neutral. The plate 4 will reverse its direction and the second finger 14 of the spiral spring 12 will be able to drive again the first finger 11 of the blocker 6. A new cycle can then begin that leads to Figure 4.

Le second mode d'exécution de l'invention réalisé selon une première variante, est illustré aux figures 12 à 15. L'échappement à détente comprend une roue d'échappement 2 munie de dents 3. Comme cela est connu et sans qu'il soit nécessaire de le représenter, la roue d'échappement 2 est entraînée par le rouage de la montre qui reçoit du barillet sa force motrice. Les figures 12 à 15 montrent un plateau 4 monté sur l'axe d'un balancier non représenté. Le plateau 4 est équipé d'une palette 5 recevant des impulsions par les dents 3 de la roue 2. Ce plateau porte encore un premier doigt 30. L'échappement comprend encore un bloqueur 6 en forme de bascule articulée sur un axe 8. Ce bloqueur comporte une première branche 9 portant une palette de repos 7 coopérant avec les dents 3 de la roue 2. La bascule ou bloqueur 6 comprend un organe élastique 32. Cet organe élastique 32 porte un second doigt d'actionnement 31 qui est arrangé de façon à être entraîné par le premier doigt 30 quand le plateau 4 tourne dans un premier sens a pour actionner le bloqueur 6, et de façon à contourner, sans être entraîné, le premier doigt 30 quand le plateau 4 tourne dans un second sens b opposé au premier.The second embodiment of the invention produced according to a first variant, is illustrated in FIGS. 12 to 15. The detent escapement comprises an escape wheel 2 provided with teeth 3. As is known and without it is necessary to represent it, the escape wheel 2 is driven by the cogwheel of the watch which receives from the barrel its driving force. Figures 12 to 15 show a plate 4 mounted on the axis of a pendulum not shown. The plate 4 is equipped with a pallet 5 receiving pulses by the teeth 3 of the wheel 2. This plate still carries a first finger 30. The exhaust further comprises a blocker 6 in the form of a rocker articulated on an axis 8. This blocker comprises a first branch 9 carrying a pallet 7 cooperating with the teeth 3 of the wheel 2. The rocker or blocker 6 comprises a resilient member 32. This elastic member 32 carries a second actuating finger 31 which is arranged so that to be driven by the first finger 30 when the plate 4 rotates in a first direction a to actuate the blocker 6, and so as to bypass, without being driven, the first finger 30 when the plate 4 rotates in a second direction b opposite the first.

Comme on l'a déjà fait remarquer plus haut, ce second mode d'exécution diffère du premier mode par le fait que l'organe élastique n'est plus disposé sur le plateau mais sur le bloqueur en forme de bascule, l'originalité de l'invention résidant dans l'organe élastique permettant d'équiper une montre de petite dimension, par exemple une montre-bracelet, avec un échappement à détente. Ceci est possible si l'organe élastique est un ressort en forme de serpentin 32. Il est donc de nouveau question ici d'un ressort de grande longueur, très flexible et qui demande au balancier qui l'actionne un minimum d'effort. Par ressort serpentin on entend un ressort sinueux, ondulé et plusieurs fois replié sur lui-même et qui peut prendre la forme représentée au dessin mais aussi différente de celle-ci.As has already been pointed out above, this second embodiment differs from the first mode in that the elastic member is no longer placed on the plate but on the rocker-shaped blocker, the originality of the invention residing in the elastic member for equipping a small watch, for example a wristwatch, with a detent escapement. This is possible if the elastic member is a coil-shaped spring 32. It is therefore again question here of a spring of great length, very flexible and which requires the pendulum which actuates a minimum of effort. By serpentine spring is meant a sinuous spring, corrugated and folded several times on itself and which can take the form shown in the drawing but also different from it.

Comme le montrent les figures 12 à 14 le ressort serpentin 32 est rapporté sur la seconde branche 10 que comporte le bloqueur 6. La première extrémité 33 de ce ressort est fixée à l'axe 8 d'articulation du bloqueur 6. Dans l'environnement de la seconde extrémité 34 de ce ressort émerge le second doigt d'actionnement 31.As shown in FIGS. 12 to 14, the coil spring 32 is attached to the second leg 10 that the blocker 6 comprises. The first end 33 of this spring is fixed to the axis 8 of articulation of the blocker 6. In the environment the second end 34 of this spring emerges the second actuating finger 31.

Les mêmes figures 12 à 14 montrent que la seconde extrémité 34 du ressort serpentin 32 et la seconde branche 10 du bloqueur 6 comportent des moyens de retenue propres à limiter l'ébat dudit second doigt 31 et à maintenir le ressort serpentin 32 dans des limites permettant au second doigt 31 d'être entraîné par, respectivement de contourner le premier doigt 30 porté par le plateau 4. Plusieurs moyens de retenue peuvent être envisagés par exemple ceux qui vont être décrits maintenant à titre d'exemple.The same figures 12 to 14 show that the second end 34 of the coil spring 32 and the second leg 10 of the blocker 6 comprise retaining means adapted to limit the fretting of said second finger 31 and to maintain the coil spring 32 within limits allowing the second finger 31 to be driven by, respectively to bypass the first finger 30 carried by the plate 4. Several retaining means may be envisaged, for example those which will now be described by way of example.

Les figures 12 à 14 montrent que la seconde branche 10 du bloqueur 6 porte des première et seconde goupilles 35 et 36. La seconde extrémité 34 du ressort serpentin 32 comporte dans l'ordre et en direction de la roue d'échappement 2 une première entaille 37 dans laquelle est engagée la première goupille 35, le second doigt d'actionnement 31, et une seconde entaille 38 dans laquelle est engagée la seconde goupille 36.Figures 12 to 14 show that the second leg 10 of the blocker 6 carries first and second pins 35 and 36. The second end 34 of the coil spring 32 has in the order and in the direction of the escape wheel 2 a first notch 37 in which is engaged the first pin 35, the second actuating finger 31, and a second notch 38 in which is engaged the second pin 36.

L'échappement à détente qui vient d'être décrit selon son second mode d'exécution fonctionne de la même façon que celle qui a été exposée à propos des figures 4 à 11 relatives au premier mode d'exécution. Il n'est donc pas utile d'y revenir ici.The expansion escapement which has just been described according to its second embodiment operates in the same way as that which has been explained with reference to FIGS. 4 to 11 relating to the first embodiment. So it's not worth going back here.

Le ressort serpentin 32 décrit ci-dessus est une pièce rapportée, ajoutée sur la seconde branche 10 du bloqueur 6. Cependant ce ressort pourrait faire partie du bloqueur sans y être ajouté après coup. La figure 15 montre un bloqueur ou bascule 6 réalisé différemment. Dans cette exécution le ressort serpentin est fait d'une pièce avec la seconde branche 10 du bloqueur 6. La figure montre en particulier que la première extrémité 39 du ressort serpentin prend naissance dans la matière dont est faite la seconde branche 10 du bloqueur 6 et que le second doigt d'actionnement émerge de l'environnement de la seconde extrémité 34 du ressort serpentin 32.The coil spring 32 described above is an insert added to the second leg 10 of the blocker 6. However, this spring could be part of the blocker without being added thereafter. Figure 15 shows a blocker or latch 6 made differently. In this embodiment, the coil spring is made in one piece with the second leg 10 of the blocker 6. In particular, the figure shows that the first end 39 of the coil spring originates in the material of which the second leg 10 of the blocker 6 is made and that the second actuating finger emerges from the environment of the second end 34 of the coil spring 32.

Comme cela a été dit à propos du ressort serpentin rapporté sur le bloqueur (figures 12 à 14), la figure 15 montre que la seconde extrémité 34 du ressort serpentin 32et la seconde branche 10 du bloqueur 6 comportent des moyens de retenue propres à limiter l'ébat du second doigt 31. La figure 15 montre aussi que la seconde branche 10 du bloqueur 6 est formée de premier et second bras 40 et 41 entre lesquels est situé ledit ressort. Les moyens de retenue comportent des premier et second becs 42 et 43 qui prolongent respectivement lesdits premier et second bras 40 et 41. L'extrémité 34 du ressort serpentin 32 comporte, dans l'ordre et en direction de la roue d'échappement, une première entaille 45 dans laquelle est engagé le second bec 43, le second doigt 31 et une seconde entaille 444 dans laquelle est engagé le premier bec 42.As has been said about the coil spring attached to the blocker (FIGS. 12 to 14), FIG. 15 shows that the second end 34 of the coil spring 32 and the second leg 10 of the blocker 6 comprise retaining means. 28 also shows that the second leg 10 of the blocker 6 is formed of first and second arms 40 and 41 between which said spring is located. The retaining means comprise first and second spouts 42 and 43 which respectively extend said first and second arms 40 and 41. The end 34 of the coil spring 32 comprises, in the order and in the direction of the escape wheel, a first cut 45 in which is engaged the second spout 43, the second finger 31 and a second cut 444 in which is engaged the first spout 42.

Ce bloqueur 6 fait d'une pièce avec le ressort serpentin 32 et les moyens de retenue 42, 44; 43, 45 limitant l'ébat du second doigt d'actionnement 31 ouvre d'intéressantes perspectives de fabrication mettant en oeuvre par exemple des méthodes de croissance galvanique, de gravage chimique ou physique ou d'injection.This blocker 6 is one piece with the coil spring 32 and the retaining means 42, 44; 43, 45 limiting the fretting of the second actuating finger 31 opens interesting manufacturing prospects using for example galvanic growth methods, chemical or physical etching or injection.

On terminera cette description en exposant une seconde variante du second mode d'exécution. Cette exécution est montrée en figure 16. Le dessin est limité au bloqueur ou bascule 6, les autres composants de l'échappement étant semblables à ceux montrés sur les figures 12 à 14.We will end this description by exposing a second variant of the second embodiment. This embodiment is shown in FIG. 16. The drawing is limited to the blocker or rocker 6, the other components of the exhaust being similar to those shown in FIGS. 12 to 14.

L'échappement à détente illustré partiellement à la figure 16 se distingue de celui illustré aux figures 12 à 14 par le fait que l'organe élastique 50 est un ressort spiral 51.The expansion escapement partially illustrated in FIG. 16 differs from that illustrated in FIGS. 12 to 14 in that the elastic member 50 is a spiral spring 51.

Le ressort spiral 51 peut être monté de différentes façons sur le bloqueur ou bascule 6. Une façon de s'y prendre est montrée à la figure 16. Le ressort spiral 51 est monté coaxialement à l'axe 8 sur lequel est articulé le bloqueur 6. L'extrémité intérieure 58 du ressort spiral 51 est fixée à l'axe d'articulation 8. Le second doigt d'actionnement 31 émerge dans l'environnement de la seconde extrémité 52 du ressort spiral 51.The spiral spring 51 can be mounted in different ways on the blocker or rocker 6. One way of doing is shown in Figure 16. The spiral spring 51 is mounted coaxially with the axis 8 on which is articulated the blocker 6 The inner end 58 of the spiral spring 51 is fixed to the hinge axis 8. The second actuating finger 31 emerges in the environment of the second end 52 of the spiral spring 51.

De manière analogue à ce qui a été décrit plus haut, la seconde extrémité 52 du ressort spiral 51 et la seconde branche 10 dont est muni le bloqueur 6 comportent des moyens de retenue propre à limiter l'état du second doigt 31 et à maintenir le ressort spiral dans des limites permettant au second doigt d'actionnement 31 d'être entraîné par, respectivement de contourner le premier doigt (30) porté par le plateau 4.In a similar manner to that described above, the second end 52 of the spiral spring 51 and the second leg 10 which is provided with the blocker 6 comprise retaining means adapted to limit the state of the second finger 31 and to maintain the spiral spring within limits allowing the second actuating finger 31 to be driven by, respectively to bypass the first finger (30) carried by the plate 4.

Comme le montre la figure 16, ces moyens de retenue comportent des première et seconde goupilles 53 et 54 portées par la seconde branche 10 du bloqueur 6, ces première et seconde goupilles étant engagées respectivement dans des première et seconde entailles 55 et 56 qui portent la seconde extrémité 52 du ressort spiral 51.As shown in Figure 16, these retaining means comprise first and second pins 53 and 54 carried by the second leg 10 of the blocker 6, these first and second pins being engaged respectively in first and second notches 55 and 56 which bear the second end 52 of the spiral spring 51.

Pour terminer on remarquera que tous les modes d'exécution décrits plus hauts sont des exemples de réalisation dont on peut s'écarter, l'essentiel résidant dans le fait qu'un ressort de grande longueur est utilisé. Une autre variante pourrait consister à équiper le plateau 4 d'un ressort serpentin.Finally, it will be noted that all the embodiments described above are examples of embodiments from which it is possible to deviate, the essential being that a spring of great length is used. Another variant could be to equip the plate 4 with a coil spring.

Claims (16)

  1. Detent escapement for a timepiece including an escapement wheel (2) fitted with teeth (3), a roller (4) secured to a balance, said roller (4) being fitted with an impulse pallet stone (5), a blocking member in the form of a lever (6) hinged on a pin (8), the first (9) and second (10) arms of said lever (6) respectively carrying a locking pallet stone (7) and a first actuating finger (11), and an elastic member (12) mounted on the roller (4) and carrying a second actuating finger (14) capable of driving the first finger (11) when the roller (4) rotates in a first direction (a) to actuate the blocking member (6) and to move around said first finger (11) without driving it, when the roller (4) rotates in a second direction (b) opposite to the first, characterized in that the elastic member is a spring including a plurality of turns (15) wounded about a centre (16).
  2. Escapement according to claim 1, characterized in that the spring is a spiral spring (12).
  3. Escapement according to claim 2, characterized in that the spiral spring (12) is mounted coaxially to a pin (16) which carries the roller (4) and the balance, the inner end (17) of said spiral spring (12) being fixed to said pin (16), said second actuating finger (14) emerging in the area of the outer end (13) of said spiral spring (12).
  4. Escapement according to claim 3, characterized in that the outer end (13) of the spiral spring (12) and the roller (4) include retaining means able to limit the shake of said second finger (14) and to keep said spiral spring (12) within limits enabling said second finger to drive or respectively move around said first finger (11) carried by the blocking member (6).
  5. Escapement according to claim 4, characterized in that the retaining means include first (19) and second (20) pins carried by the roller (4) and in that the outer end (13) of the spiral spring (12) includes in order and in the direction of its end, an opening (18) in which the first pin (19) is engaged with play, said second finger (14) and an end tongue (21) capable of abutting against the second pin (20).
  6. Detent escapement for a timepiece including an escapement wheel (2) fitted with teeth (3), a roller (4) secured to a balance, said roller (4) being fitted with an impulse pallet stone (5) and a first finger (30), a blocking member in the form of a lever hinged on a pin (8), a first arm (9) of said lever (6) carrying a locking pallet stone (7), said lever including an elastic member (32) carrying a second actuating finger (31) capable of being driven by the first finger (30) when the roller (4) rotates in a first direction (a) to actuate the blocking member (6), and to move around said first finger (30) without driving it when the roller (4) rotates in a second direction (b) opposite to the first, characterized in that the elastic member is a serpentine spring (32).
  7. Escapement according to claim 6, characterized in that the serpentine spring is added onto the second arm (10) of the blocking member (6), the first end (33) of the serpentine spring (32) being fixed to the hinge pin (8) of the blocking member (6), said second actuating finger (31) emerging in the area of the second end (34) of said serpentine spring (32).
  8. Escapement according to claim 7, characterized in that the second end (34) of the serpentine spring (32) and the second arm (10) of the blocking member (6) include retaining means able to limit the shake of said second finger (31) and to keep said serpentine spring (32) within limits enabling the second actuating finger (31) to be driven by, or respectively to move around the first finger (30) carried by the roller (4).
  9. Escapement according to claim 8, characterized in that the retaining means include first (35) and second (36) pins carried by the second arm (10) of the blocking member (6) and in that the second end (34) of the serpentine spring (32) include in order and in the direction of the escapement wheel (2) a first notch (37) in which the first pin (35) is engaged, said second finger (31), and a second notch (38) in which the second pin (36) is engaged.
  10. Escapement according to claim 6, characterized in that the serpentine spring (32) is integral with the second arm (10) of the blocking member (6), the first end (39) of the serpentine spring being made of the material of which the second arm (10) of the blocking member (6) is made, the second actuating finger (31) emerging in the area of the second end (34) of said serpentine spring (32).
  11. Escapement according to claim 10, characterized in that the second end (34) of the serpentine spring (32) and the second arm (10) of the blocking member (6) include retaining means able to limit the shake of said second finger (31), and to keep said serpentine spring (32) within limits enabling the second actuating finger (31) to be driven by, or respectively to move around the first finger (30), carried by the roller (4).
  12. Escapement according to claim 11, characterized in that the second arm (10) of the blocking member (6) is formed of first (40) and second (41) levers between which the serpentine spring is located, in that the retaining means include first (42) and second (43) beaks respectively extending said first (40) and second (41) levers and in that the second end (34) of the serpentine spring (32) includes, in order and in the direction of the escapement wheel (2), a first notch (45) in which the second beak is engaged (43), said second finger (31) and a second notch (44) in which the first beak (42) is engaged.
  13. Detent escapement for a timepiece including an escapement wheel (2) fitted with teeth (3), a roller (4) secured to a balance, said roller (4) being fitted with an impulse pallet stone (5) and a first finger (30), a blocking member in the form of a lever (6) hinged on a pin (8), a first arm (9) of said lever (6) carrying a locking pallet stone (7), said lever including an elastic member (50) carrying a second actuating finger (31) capable of being driven by the first finger (30) when the roller (4) rotates in a first direction (a), and to move around said finger (30) without being driven when the roller (4) rotates in a second direction (b) opposite to the first, characterized in that the elastic member is a spiral spring (51).
  14. Escapement according to claim 13, characterized in that the spiral spring (51) is mounted coaxially to the pin (8) on which the lever (6) is hinged, the inner end (58) of said spiral spring (51) being fixed to said pin (8), said second actuating finger (31) emerging in the area of the second end (52) of said spiral spring (51).
  15. Escapement according to claim 14, characterized in that the second end (52) of the spiral spring (51) and the second arm (10) with which the blocking member (6) is fitted, include retaining means able to limit the shake of said second finger (31) and to keep said spiral spring within limits enabling the second actuating finger (31) to be driven by, or respectively move around the first finger (30) carried by the roller (4).
  16. Escapement according to claim 15, characterized in that the retaining means include first (53) and second (54) pins carried by the second arm (10) of the blocking member (6) and in that the second end (52) of the spiral spring (51) includes, in order and in the direction of the escapement wheel (2), a first notch (55) in which the first pin (53) is engaged, said second finger (31), and a second notch (56) in which the second pin (54) is engaged.
EP03027910A 2003-12-04 2003-12-04 Detent escapement for wrist-watches Expired - Lifetime EP1538490B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE60314156T DE60314156T2 (en) 2003-12-04 2003-12-04 Chronometer escapement for wristwatches
EP03027910A EP1538490B1 (en) 2003-12-04 2003-12-04 Detent escapement for wrist-watches
AT03027910T ATE363673T1 (en) 2003-12-04 2003-12-04 CHRONOMETER ESCAPEMENT FOR WRISTWATCHES
SG200407217A SG112952A1 (en) 2003-12-04 2004-11-26 Detent escapement for timepiece
US11/000,370 US6942378B2 (en) 2003-12-04 2004-12-01 Detent escapement for timepiece
JP2004350896A JP4444806B2 (en) 2003-12-04 2004-12-03 Watch detent escapement
CNB2004100966865A CN100552570C (en) 2003-12-04 2004-12-03 watch escapement
HK05106166.0A HK1073698B (en) 2003-12-04 2005-07-21 Detent escapement for timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03027910A EP1538490B1 (en) 2003-12-04 2003-12-04 Detent escapement for wrist-watches

Publications (2)

Publication Number Publication Date
EP1538490A1 EP1538490A1 (en) 2005-06-08
EP1538490B1 true EP1538490B1 (en) 2007-05-30

Family

ID=34442957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03027910A Expired - Lifetime EP1538490B1 (en) 2003-12-04 2003-12-04 Detent escapement for wrist-watches

Country Status (7)

Country Link
US (1) US6942378B2 (en)
EP (1) EP1538490B1 (en)
JP (1) JP4444806B2 (en)
CN (1) CN100552570C (en)
AT (1) ATE363673T1 (en)
DE (1) DE60314156T2 (en)
SG (1) SG112952A1 (en)

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EP1770452A1 (en) * 2005-09-30 2007-04-04 Peter Baumberger Detent escapement for timepieces
CN100407336C (en) * 2005-11-22 2008-07-30 武汉国光通信有限公司 A data access method of non-volatile memory in embedded system
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JP5441434B2 (en) * 2009-02-20 2014-03-12 セイコーインスツル株式会社 Detent escapement and speed control and escapement using this
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CN102402174B (en) * 2010-09-14 2013-05-08 精工电子有限公司 Detent escapement for timepiece and mechanical timepiece

Also Published As

Publication number Publication date
SG112952A1 (en) 2005-07-28
JP4444806B2 (en) 2010-03-31
ATE363673T1 (en) 2007-06-15
JP2005164596A (en) 2005-06-23
DE60314156T2 (en) 2008-01-24
DE60314156D1 (en) 2007-07-12
US20050122847A1 (en) 2005-06-09
CN1624606A (en) 2005-06-08
CN100552570C (en) 2009-10-21
EP1538490A1 (en) 2005-06-08
HK1073698A1 (en) 2005-10-14
US6942378B2 (en) 2005-09-13

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