EP3026506A1 - Timer with speed selector - Google Patents

Abstract

The invention relates to a watch movement having at least first and second functions implementing the display of at least first and second information. According to the invention, the movement has a selection member comprising an actuator, at least one latch configured to take at least first and second positions, respectively corresponding to the first and second functions, and corresponding to the establishment of first and second links. respective kinematics, and a cam cooperating with the actuator and the at least one latch so as to establish the first and second kinematic links.

Description

Field of the invention

The invention relates to a watch movement comprising at least a first and a second function implementing the display of at least first and second information, including tachometric information.

Background of the invention

It is known from the document WO 2011/160970 a watch movement comprising a mechanism associated with one of the first and second functions, and a selection member movable between the first and second positions, respectively associated with the first and second functions and corresponding to the first set and second respective kinematic links, between the work train and the display mobile, giving rise to opposite directions of rotation and / or different speeds of rotation of the display mobile.

The first and second functions are chronograph and countdown functions, the display mobile being intended to ensure the displacements of the display member in a first direction during the activation of the chronograph function and in a second direction when activating the count-down function.

The watch movement described above has several disadvantages. It should be mentioned first of all that the countdown timer requires a prior adjustment of the value to be counted down, a value which the movement takes into account in order to determine the function to be activated, which implies a complication in use. It will also be mentioned that such a mechanism has a relatively large number of pieces which involves a relatively complex and difficult mechanism to implement.

Summary of the invention

The invention particularly aims to overcome the various disadvantages of these known techniques.

More specifically, an object of the invention is to provide a tachometer and / or a chronograph to obtain a more accurate reading of the average speed depending on the situation encountered, such as a regatta or a car race.

The invention also aims, at least in a particular embodiment, to provide a device that is simple to implement and inexpensive.

• une roue entraineuse de chronographe,
• un mobile de chronographe,
• un organe de sélection apte à être déplacé entre au moins des première et seconde positions, associées respectivement aux première et seconde fonctions, et correspondant à l'établissement de première et seconde liaisons cinématiques respectives, entre la roue entraineuse de chronographe et le mobile de chronographe, donnant lieu à des sens de rotation opposés et/ou à des vitesses de rotation différentes du mobile de chronographe.

These objectives, as well as others which will appear more clearly later, are achieved according to the invention by means of a watch movement having at least first and second functions implementing the display of at least first and second information, the watch movement including:

• a chronograph driving wheel,
• a chronograph mobile,
• a selection member adapted to be moved between at least first and second positions, associated respectively with the first and second functions, and corresponding to the establishment of respective first and second kinematic links, between the chronograph driving wheel and the chronograph mobile; , giving rise to opposite directions of rotation and / or to different speeds of rotation of the chronograph wheel.

Thus, the object of the present invention, by its different functional and structural aspects described above, makes it possible to obtain an organ of relatively compact selection while being relatively simple to implement.

• un actionneur,
• au moins une bascule configurée pour prendre au moins des première et seconde positions, correspondant respectivement aux première et seconde fonctions, et correspondant à l'établissement de première et seconde liaisons cinématiques respectives,
• une came coopérant avec l'actionneur et la au moins une bascule de manière à établir les première et seconde liaisons cinématiques.

According to the invention, the selection member comprises:

• an actuator,
• at least one flip-flop configured to assume at least first and second positions, respectively corresponding to the first and second functions, and corresponding to the establishment of respective first and second kinematic links,
• a cam cooperating with the actuator and the at least one latch so as to establish the first and second kinematic links.

• la au moins une bascule, dite première bascule, comprend une plaque inférieure et une plaque supérieure entre lesquelles sont agencés un premier rouage et un deuxième rouage, susceptibles d'être déplacés entre les première et seconde positions dans lesquelles, le premier rouage est en prise avec la roue entraineuse de chronographe et est relié cinématiquement au mobile de chronographe dans la première position, et le deuxième rouage est en prise avec la roue entraineuse de chronographe et est relié cinématiquement au mobile de chronographe dans la deuxième position ;
• le premier rouage et/ou le deuxième rouage est un rouage démultiplicateur et/ou inverseur ;
• l'organe de sélection est apte à être déplacé dans une troisième position, associée à une troisième fonction, et correspondant à l'établissement d'une troisième liaison cinématique entre la roue entraineuse de chronographe et le mobile de chronographe ;
• le mouvement comprend une seconde bascule correspondant à la troisième fonction, et correspondant à l'établissement de la troisième liaison cinématique ;
• la deuxième bascule est montée pivotante sur la première bascule et comprend un rouage configuré pour coopérer avec les premier et deuxième rouages dans la troisième position ;
• le mouvement comprend un basculeur monté pivotant sur la première bascule et coopérant avec la deuxième bascule, le basculeur étant configuré pour disposer l'organe de sélection en troisième position ;
• la came comprend une navette supérieure, une navette inférieure et un rochet, disposés autour d'un axe de pivotement et respectivement configurés pour coopérer avec le basculeur, la plaque inférieure de la première bascule, et l'actionneur ;
• l'organe de sélection comprend une première lame ressort contraignant la première bascule dans la première position ;
• le basculeur comprend un ressort de rappel configuré pour maintenir le basculeur lorsque la première bascule est dans la première position ou la deuxième position ;

According to other advantageous variants of the invention:

• the at least one rocker, said first rocker, comprises a lower plate and an upper plate between which are arranged a first wheel and a second wheel, capable of being moved between the first and second positions in which the first gear is engaged with the chronograph driving wheel and is kinematically connected to the chronograph mobile in the first position, and the second gear is engaged with the chronograph driving wheel and is kinematically connected to the chronograph mobile in the second position;
• the first wheel and / or the second wheel is a gear reducer and / or inverter;
• the selection member is adapted to be moved in a third position, associated with a third function, and corresponding to the establishment of a third kinematic link between the chronograph driving wheel and the chronograph mobile;
• the movement comprises a second flip-flop corresponding to the third function, and corresponding to the establishment of the third kinematic link;
• the second flip-flop is pivotally mounted on the first flip-flop and comprises a gear train configured to cooperate with the first and second wheels in the third position;
• the movement comprises a rocker pivotally mounted on the first rocker and cooperating with the second rocker, the rocker being configured to arrange the selection member in third position;
• the cam comprises an upper shuttle, a lower shuttle and a ratchet, arranged around a pivot axis and respectively configured to cooperate with the rocker, the lower plate of the first rocker, and the actuator;
• the selection member comprises a first spring blade constraining the first latch in the first position;
• the rocker comprises a return spring configured to maintain the rocker when the first rocker is in the first position or the second position;

The invention also relates to a timepiece equipped with a movement according to the invention.

Brief description of the drawings

• les figures 1a et 1b illustrent respectivement une vue en perspective et une vue éclatée en perspective d'un mouvement horloger conforme à l'invention ;
• les figures 2a et 2b représentent respectivement une vue de dessus et une vue en coupe selon la ligne A-A d'un organe de sélection d'un mouvement horloger conforme à l'invention ;
• les figure 3a et 3b représentent respectivement une vue de dessus et une vue en coupe selon la ligne B-B d'un organe de sélection d'un mouvement horloger conforme à l'invention ;
• les figure 4a et 4b représentent respectivement une vue de dessus et une vue en coupe selon la ligne C-C d'un organe de sélection d'un mouvement horloger conforme à l'invention.

Other particularities and advantages will emerge clearly from the description which is given hereinafter, by way of indication and in no way limiting, with reference to the appended drawings, in which:

• the figures 1a and 1b respectively illustrate a perspective view and an exploded perspective view of a watch movement according to the invention;
• the Figures 2a and 2b represent respectively a top view and a sectional view along the line AA of a selection member of a watch movement according to the invention;
• the figure 3a and 3b respectively represent a view from above and a sectional view along the line BB of a selection member of a watch movement according to the invention;
• the figure 4a and 4b respectively represent a view from above and a sectional view along the line CC of a selection member of a watch movement according to the invention.

Detailed Description of the Preferred Embodiments

A watch movement according to an exemplary embodiment will now be described in the following with reference to Figures 1a to 4b .

The watch movement 1 is arranged to allow the display of the hour and the minute by means of an hour wheel, a minute wheel, and a second wheel, in a conventional manner.

• une roue entraineuse de chronographe 2,
• un mobile de chronographe 3,
• un organe de sélection apte à être déplacé entre au moins des première et seconde positions, associées respectivement aux première et seconde fonctions, et correspondant à l'établissement de première et seconde liaisons cinématiques respectives, entre la roue entraineuse de chronographe 2 et le mobile de chronographe 3, donnant lieu à des sens de rotation opposés et/ou à des vitesses de rotation différentes du mobile de chronographe 3.

As previously mentioned, the general principle of the invention is based on the implementation of a watch movement having at least first and second functions implementing the display of at least first and second information, the watch movement comprising especially :

• a chronograph driving wheel 2,
• a chronograph mobile 3,
• a selection member adapted to be moved between at least first and second positions, associated respectively with the first and second functions, and corresponding to the establishment of first and second respective kinematic links, between the chronograph driving wheel 2 and the moving wheel of chronograph 3, giving rise to opposite directions of rotation and / or to different speeds of rotation of the chronograph wheel 3.

• un actionneur 10,
• au moins une bascule configurée pour prendre au moins des première et seconde positions, correspondant respectivement aux première et seconde fonctions, et correspondant à l'établissement de première et seconde liaisons cinématiques respectives,
• une came 20 coopérant avec l'actionneur 10 et la au moins une bascule de manière à établir les première et seconde liaisons cinématiques.

According to the invention, the selection member comprises:

• an actuator 10,
• at least one flip-flop configured to assume at least first and second positions, respectively corresponding to the first and second functions, and corresponding to the establishment of respective first and second kinematic links,
• a cam 20 cooperating with the actuator 10 and the at least one latch so as to establish the first and second kinematic links.

In this example, the frame elements of the watch movement 1 as well as the constituent elements of the current time have not been represented, while certain constituent elements have been made transparent to facilitate understanding.

According to a preferred embodiment of the invention, the movement 1 comprises at least one chronograph and countdown mechanism, each mechanism being selectable through the same selection member. The chronograph driving wheel 2 and the mobile chronograph 3 have been represented in the figures in order to better visualize the different kinematic links of the functions.

The figure 1b illustrates an exploded view in perspective of a part of a watch movement 1 equipped with a selection member further comprising an actuator 10, one end of which comprises an actuating finger 101 for selecting a function. The other end 100 of the actuator 10 may for example cooperate with a push button actuated by the user.

The actuator 10 is slidably mounted on a frame member of the movement to allow the finger 101 to move in a direction longitudinal, and is configured to cooperate with elastic return means, not shown in the figures, so as to maintain it in the rest position.

The actuating finger 101 is provided to cooperate with a cam 20 pivotally mounted on a frame member of the watch movement 1 between at least two positions, by an axis of rotation located in the center of the cam 20, one of the positions being associated with the chronograph function and the other with the countdown function.

As can be seen on the figures 1a and 1b the cam 20 comprises at least a first shuttle, called lower shuttle 21, a second shuttle, called upper shuttle 22, and a ratchet 23, arranged around the same pivot axis. As illustrated in the figures, the lower 21 and upper 22 shuttles respectively have a spout 210 and a spout 220 at each of their ends, the spouts being arranged symmetrically with respect to the center of rotation of the cam 20.

The selection member also comprises a flip-flop, said first flip-flop 30. The first flip-flop 30 is constituted by a lower plate 31 and an upper plate 32 between which are arranged a first wheel formed by a first axis 33 receiving a gear wheel 330 and a pinion 331 and a second wheel formed by a second pin 34 receiving toothed wheel 340, an upper pinion 341 and a lower pinion 342.

The upper plate 32 and the lower plate 31 are assembled together to form the first flip-flop 30, upper plate 32 having an upper pivot 320 configured to be housed in the orifice of a bridge not shown in the figures and the lower plate 31 having an orifice 311 configured to receive a pivot of another bridge. Advantageously, the upper pivot 320 and the orifice 311 are aligned on the same axis so as to form the axis of rotation of the first latch 30.

The first wheel and the second wheel are configured to cooperate with the chronograph driving wheel 2 when the selection member is moved between the first and second positions corresponding to the first and second kinematic links.

Thus, when the selection member is in the first position as illustrated in Figures 2a and 2b , the upper pinion 341 is engaged with the driving wheel 2 and is kinematically connected to the chronograph mobile 3 by means of the lower pinion 342 located on the same axis 34.

And when the selection organ is in second position as illustrated in figures 3a and 3b , the wheel 330 of the second wheel is engaged with the driving wheel 2 and is kinematically connected to the chronograph mobile 3 through the pinion 331 which engrains an intermediate wheel 430 engraining itself the wheel 340 of the second gear in connection with the lower gear 342 which drives the chronograph mobile 3.

According to the invention, the first wheel and / or the second wheel can be gear reducers and / or inverters depending on the functions that it is desired to implement within the watch. These functions can be, for example, a chronograph function, a countdown function, or a chronograph function with a lower speed.

As can be seen on the figures 1 and 2a , the lower plate 31 of the first rocker 30 has an engagement surface configured to cooperate with the cam 20. More specifically, the nozzles 210 of the lower shuttle 21 are configured to cooperate with the engagement sector 310 of the lower plate 31 to move in rotation the first latch 30.

Thus, to switch from the first mode of operation to the second mode of operation, the carrier presses a push button, not shown in the figures, in connection with the actuator 10 so that that the actuating finger 101 rotates the ratchet 23, and the lower shuttle 21 which then bears against the engagement sector 310. This has the effect of pivoting the first latch 30, to disengage the upper gear 341 of the chronograph driving wheel 2 and simultaneously engage the wheel 330 with the chronograph driving wheel 2.

A spring blade 11 is provided to hold the ratchet 23 and to advance it stepwise when it is actuated in rotation by the actuator 10.

Similarly, the selection member comprises a second spring blade 12 configured to define a default position of the first latch 30, exerting on it a force to place it in the position associated with the first function, the chronograph function for example .

According to the invention, the selection member may be placed in a third position which is associated with a third function, and corresponding to the establishment of a third kinematic link between the chronograph driving wheel 2 and the chronograph mobile 3 .

The selection member comprises a second flip-flop 40 making it possible to select the third function, and to establish the third observable kinematic link at the figure 4b .

According to a particularly advantageous aspect of the invention, the second flip-flop 40 is pivotally mounted on the first flip-flop 30.

As can be seen on the figure 1b , the second flip-flop 40 comprises a lower plate 41 pivotally mounted on the lower plate 31 of the first flip-flop 30, and an upper plate 42 pivotally mounted on the upper plate 32 of the first flip-flop 30.

The lower plate 41 has an orifice 410 configured to receive a pivot of the lower plate 31 of the first latch 30, and the upper plate 42 has an upper pivot 420 configured to fit in a hole 321 of the upper plate 32 of the first Thus, the upper pivot 420 and the orifice 410 define the axis of rotation of the second latch 40 relative to the first latch 30.

The upper plate 42 is assembled on the lower plate 41 by means of an assembly element 46 integral with the lower plate 41. This assembly element 46 comprises two pins 460 configured to be housed in two corresponding openings 421 on the plate superior 42.

The second flip-flop 40 receives the intermediate wheel 430 and the intermediate gear 431, as well as another wheel 440, respectively mounted between the upper plate 42 and the lower plate 41 via an axis 43 and another axis 44. .

As can be seen at figure 1b , the lower plate 41 of the second latch 40 has a toothed sector 45 configured to cooperate with a rocker 50 rotatably articulated through an axis 51 on the lower plate 31 of the first latch 30.

The rocker 50 also has a toothed sector 52 configured to cooperate with the toothed sector 45 of the second rocker 40. The rocker 50 also comprises a return spring 53 exerting a return force returning it to its initial position when the selection member is placed in first or second position.

As can be seen in figures 1a and 1b , the rocker 50 has an engagement surface 54 configured to cooperate with the cam, the nozzles 220 of the upper shuttle 22 being configured to cooperate with the engagement surface 54 of the rocker 50.

Thus, to switch to the third mode of operation illustrated in Figures 4a and 4b , the wearer presses a push button, not shown in the figures, in connection with the actuator 10 so that the actuating finger 101 rotates the ratchet 23 and the shuttle 22 upper, until the upper shuttle 22 bears against the engagement surface 310 and exerts a force on the actuator 50.

The actuator 50 then rotates the second latch 40 through the toothed sectors 45 and 52 so that the intermediate gear 431 engages on the one hand the wheel 330, and on the other hand the wheel 440 which engages the wheel 340 in connection with the chronograph mobile 3.

The invention also relates to a timepiece, such as a watch, equipped with such a movement.

According to one embodiment of the invention, the watch may have means for displaying the selected function. These display means may consist of an indicator hand on the dial of the watch or a window on the dial displaying the selected function.

With these different aspects of the invention, there is a simple design movement to select and implement the desired function easily.

Of course, the present invention is not limited to the illustrated example but is susceptible of various variations and modifications that will occur to those skilled in the art. <U> NOMENCLATURE </ u> 1. Movement, 331. Pinion, 2. Driving wheel, 34. Second axis, 3. Mobile chronograph, 340. Wheel, 10. actuator, 341. Upper sprocket, 100. End of the actuator, 342. Lower sprocket, 101. Actuating finger, 40. Second toggle, 11. Cam spring blade, 41. Lower plate, 12. Spring blade rocker, 410. Bottom orifice, 20. Cam, 42. Upper plate, 21. Upper shuttle, 420. Upper pivot, 210. Shuttle beaks 421. openings, top, 43. First axis, 22. Lower shuttle, 430. Intermediate wheel, 220. Spouts of the lower shuttle, 431. Intermediate gear, 44. Second axis, 23. Ratchet, 440. Wheel, 30. First rocker, 45. Toothed sector, 31. Lower plate, 46. Assembly portion, 310. Sector of commitment, 460. Pions, 311. Lower pivot, 50. rocker, 32. Upper plate, 51. Rocker shaft, 320. Upper pivot, 52. Toothed sector, 321. Hole, 53. spring, 33. First axis, 54. Engagement surface. 330. Wheel,

Claims (11)

Movement (1) watchmaker having at least first and second functions implementing the display of at least first and second information, the watch movement including: - a chronograph driving wheel (2), - a chronograph mobile (3), a selection member capable of being displaced between at least first and second positions respectively associated with the first and second functions and corresponding to the establishment of respective first and second kinematic links between the chronograph driving wheel (2) and the chronograph wheel (3), giving rise to opposite directions of rotation and / or to different speeds of rotation of the chronograph wheel (3),
characterized in that the selection member comprises: an actuator (10), at least one flip-flop configured to take at least first and second positions, respectively corresponding to the first and second functions, and corresponding to the establishment of respective first and second kinematic links, - A cam (20) cooperating with the actuator (10) and the at least one latch so as to establish the first and second kinematic links. Movement (1) watchmaker according to claim 1, wherein the at least one rocker, said first rocker (30), comprises a lower plate (31) and an upper plate (32) between which are arranged a first wheel and a second wheel , capable of being moved between the first and second positions in which the first gear is engaged with the chronograph driving wheel (2) and is connected kinematically to the chronograph mobile (3) in the first position, and the second gear is engaged with the chronograph driving wheel (2) and is kinematically connected to the chronograph mobile (3) in the second position. Movement (1) watchmaker according to claim 1 or 2, wherein the first wheel and / or the second wheel is a gear reducer and / or inverter. Movement (1) watchmaker according to any one of claims 1 to 3, wherein the selection member is adapted to be moved to a third position, associated with a third function, and corresponding to the establishment of a third link kinematic between the chronograph driving wheel (2) and the chronograph mobile (3). Movement (1) watchmaker according to any one of claims 1 to 4, comprising a second flip-flop (40) corresponding to the third function, and corresponding to the establishment of the third kinematic link. Movement (1) watchmaker according to claim 5, wherein the second flip-flop (40) is pivotally mounted on the first flip-flop (30) and comprises a gear train configured to cooperate with the first and second wheels in the third position. Movement (1) watchmaker according to claim 6 or 7, comprising a rocker (50) pivotally mounted on the first rocker (30) and cooperating with the second rocker (40), the rocker (50) being configured to arrange the organ selection in third position. Movement (1) watchmaker according to any one of claims 1 to 7, wherein the cam (20) comprises an upper shuttle (22), a lower shuttle (21) and a ratchet (23), arranged around an axis pivoting and respectively configured to cooperate with the rocker (50), the lower plate (31) of the first rocker (30), and the actuator (10). Movement (1) watchmaker according to any one of claims 1 to 8, wherein the selection member comprises a first leaf spring (12) constraining the first latch (30) in the first position. Movement (1) clock according to claim 7, wherein the rocker (50) comprises a return spring (53) configured to maintain the rocker (50) when the first rocker (30) is in the first position or the second position. Timepiece comprising a watch movement (1) as claimed in the preceding claims.

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