Patent Application
20190332066
This application claims priority of European patent application No. EP18170016.2 filed Apr. 30, 2018, the content of which is hereby incorporated by reference herein in its entirety.
The invention relates to a horological display system. The invention relates also to an actuation system. It relates also to a movement comprising such a display or actuation system. Also, it relates to a timepiece, in particular a wristwatch, comprising such a display or actuation system or such a movement. It relates finally to a method for operating such a display or actuation system, such a movement or such a timepiece.
Devices for displaying a time indication, in particular a measured time, are known from the state of the art, and can in particular take the form of time counters or totalizers such as those known as chronographs. In these devices, a display member, generally taking the form of a hand, is provided to cooperate with a given graduation so as to count, for example, the number of fractions of a second, of seconds, of minutes or of hours that have elapsed.
In the case of a minutes totalizer, it is common practice to count the time on a graduation of 30 minutes, arranged on a circle, so as to make it possible to distinguish the graduations. In this case, the measured time display capacity is generally 30 minutes, and can prove insufficient. In the case of an hours totalizer, it is common practice to count the time on a graduation of 12 hours, arranged on a circle, so as to make it possible to distinguish the graduations. In this case, the measured time display capacity is generally 12 hours, and can prove insufficient.
A timepiece is known from the patent application EP0869410 that comprises a first display member, in the form of a hand, provided to cooperate with a first graduation so as to indicate the minutes, and a second display member, in the form of a disk, which appears in a window so as to indicate the hours. The time displayed constitutes the current time.
The patent application CH687796 discloses, for its part, a mechanism for displaying the current time over 24-hours. A disk can oscillate according to two positions so that a dial can present two configurations; a first configuration of the dial being a representation of the current time from 13 h to 24 h, and a second configuration of the dial being a representation of the current time from 1 h to 12 h.
The patent application EP2799938 discloses an instantaneous jump mechanism implementing a hairspring whose central end is fixed to an tightening mobile and whose distal end is fixed to a display member.
These different embodiments cannot be used to display a measured time. Indeed, such a measured time display function requires the ability to fix the display and to be able to reset it.
The aim of the invention is to provide a display system that makes it possible to remedy the drawbacks mentioned above and to enhance the display systems known from the prior art. In particular, the invention proposes a display system that is compact, reliable and that improves the legibility of the horological information.
According to a first aspect of the invention, a display system is defined by the following definitions:
According to the first aspect of the invention, a movement is defined by the following definition:
According to the first aspect of the invention, a timepiece is defined by the following definition:
According to the first aspect of the invention, an operating method is defined by the following definitions:
According to a second aspect of the invention, an actuation system is defined by the following definitions:
According to the second aspect of the invention, a movement is defined by the following definition:
According to the second aspect of the invention, a timepiece is defined by the following definition:
According to the second aspect of the invention, an operating method is defined by the following definitions:
Saving any logical or technical incompatibility, any combination of the features of the first and second aspects can be produced.
The attached figures represent, by way of example, an embodiment of a timepiece incorporating an embodiment of a display system or an embodiment of an actuation system.
According to a first aspect, an embodiment of a timepiece 300 is described hereinbelow with reference to
The timepiece comprises a horological movement. The horological movement can be of electronic or mechanical type, in particular automatic.
The horological movement advantageously comprises a chronograph system, for example a chronograph module.
The horological movement, in particular the chronograph system, comprises an embodiment of a system 100 for displaying time or time derivative information, in particular a system 100 for displaying a measured time.
The system 100 for displaying time or time derivative information comprises:
The time or time derivative information can in particular be hour information and/or minute information and/or second information and/or fraction-of-a-second information. This information can be current timing information or recorded timing information.
The display system can also comprise a frame 9, in particular an movement-blank 9.
The limb can be formed over a complete circle or be formed over only a circular arc. By extension, the limb can be realized as a straight-line segment. More generally, the limb can have any straight or curved form. The display system can comprise a dial and the limb can be realized on the dial. The display system can comprise a counter and the limb can be realized on the counter. The limb can comprise or be associated with a graduation. Such a graduation can be realized on the dial or on the counter.
The graphic element can be any form or any mark 20a, 20b, 20c, 20d, 20e, 20f. The graphic element can comprise an alphabetical character or an alphanumeric character string. Preferably, the graphic element is one or more numeric characters. Preferably, the dial comprises one or more windows or apertures 10a, 10b, 10c and the graphic element cooperates with the windows or the apertures, that is to say that the graphic element is visible in a window or an aperture.
Preferably, the display system comprises a support 2, in particular a disk 2, having at least one graphic element.
The graphic element is a reference or defines a reference for the limb with which it is associated. Advantageously, the graphic element is a reference or defines a reference for the graduation with which it is associated. For example, the graphic element defines a limb origin or a graduation origin. In particular, the graphic element gives a meaning to the limb or to the graduation or to the graduation associated with the limb.
For example,
For example,
Thus, the limb 10 can be modulated as a function of the graphic elements visible to the wearer of the timepiece, in particular as a function of the graphic elements likely to appear in the apertures 10a, 10b, 10c.
The indicator member 1 is, for example, a hand. More generally, the indicator member can be any cursor or any member making it possible to point to or indicate a point of the limb and consequently indicate a value, even approximately, by cooperation with the limb.
For example, the indicator member 1 is mounted to be mobile relative to the frame, in particular mobile relative to the frame in rotation about the axis A1.
In the embodiment represented, the indicator member is a hand cooperating with a first graduation 10 extending over a circle C.
The display system also comprises a mechanism for driving the indicator member 1 which is described hereinbelow with reference to
Advantageously, the switching of the display system 100 from the first configuration C1 to the second configuration C2 is performed at the moment when the indicator member 1 is situated facing the origin of the limb or the aperture 10a, after having traveled a first time over the entire length of the limb, in particular after having covered a first rotation corresponding to the extent of the circle C. Advantageously, this switching is performed perfectly instantaneously.
The switching of the display system 100 from the second configuration C2 to the first configuration C1 is performed at the moment when the indicator member 1 is situated once again facing the origin of the limb or the aperture 10a, after having covered the entire length of the limb for a second time, in particular after having covered a second rotation corresponding to the extent of the circle C. Advantageously, this switching is performed instantaneously.
Preferably, the device 2, 8, 22, 71 for modifying the graphic element is a device for driving the graphic element, in particular a device for driving the support 2 bearing the modifiable graphic elements 20a-f. The support and/or the graphic elements are arranged so as to be displaced under the effect of the device 2, 8, 22, 71 for modifying the graphic element. Moreover, the support and/or the graphic elements are advantageously also arranged so as to be reset to a determined position by the position resetting device 3, 4, 34. Thus, the modifiable graphic element is for example modifiable by displacement, in particular the modifiable graphic element can be modified by:
The device for modifying the graphic element comprises:
The energy accumulator 8 can comprise a spring, in particular a hairspring 81, fixed at a first of its ends 81b to the frame 9 and bearing at a second of its ends against a plate 22 that is mobile relative to the frame, in particular mobile relative to the frame in rotation about the axis A1.
The plate is, for example, secured to the support. In particular, the plate is advantageously secured to the support by friction or by indenting so as to be able to be disengaged from the support. The plate comprises several notches 221a-d intended to successively receive the second end 81a of the spring. In the embodiment represented, the plate comprises four notches regularly distributed angularly about the axis A1. Thus, the plate 22 comprises a hollowed-out cutout 221 in the form of a star, whose branches form the notches 221a, 221b, 221c, 221d which are provided to receive the second end of the spring.
The first of its ends (the central end 81b) is immobilized in rotation through an abutment 82 which takes, for example, the form of a tenon 82 added to the frame 9. The second of its ends (the distal end 81a) is formed by or comprising a pin 84. This pin 84 is intended to cooperate with the notches 221a-d mentioned previously.
Moreover, the pin 84 is arranged so as to be held in abutment against an end 83a of a cam path 83 formed or hollowed out, for example, on the frame 9. In this way, the spring 81 can be arranged unequivocally and held prestressed facing the frame 9.
Thus, the accumulator is arranged so as to act on the support 2 through an intermediate element 22 which takes the form of the plate.
The support-plate assembly is mounted on a tubular element 23, pivoted on the frame 9, so as to form a second mobile 21 which is guided in rotation about the pivot-shank 12 on which the indicator member 1 is mounted.
The transmission mechanism advantageously comprises a third mobile 71 kinematically linked with the indication member 1, in particular a third mobile meshing with a wheel 13 of the first mobile and therefore secured to the indication member 1. The third mobile 71 is mobile relative to the frame 9, in particular mobile in rotation relative to the frame 9 about an axis A2 parallel to the axis A1. The third mobile 71 comprises a finger 72 arranged so as to act on the energy accumulator, in particular on the second end 81a of the spring, in particular on the pin 84, to displace it from a first notch 221a to an adjacent second notch 221b of the plate 22. This displacement is done against the action of the accumulator. In this displacement, the second end of the accumulator is guided by a flank 222a of the cutout 221, this flank linking the first notch 221a to the adjacent second notch 221b of the plate 22.
The driving of the support 2 is produced through the driving finger 72. The finger is for example kinematically linked to the wheel 13 through a wheel 73 which is secured to it. Thus, the periodic driving of the indication member 1 also drives the periodic rotation of the third mobile 71 comprising the driving finger 72 and the wheel 73.
The finger 72 is consequently arranged so as to act on the support 2 via the energy accumulator 8.
The authorization mechanism comprises a locking disk 720 provided with a first cutout 721, kinematically linked with the indication member 1 and cooperating with the plate 22 provided with several second cutouts 223a-d for locking or authorizing the rotation of the plate. The locking disk 720 advantageously forms part of the third mobile 71. Preferably, the locking disk 720 and the finger 72 are aligned or positioned angularly about the axis A2 in order to act in a synchronized manner on the first mobile. The locking disk cooperates by obstruction with the first mobile, in particular with a conformation of the first mobile, in particular with a periphery 220 of the plate 22 of the first mobile to authorize or prohibit the rotation of the first mobile relative to the frame 9 about the axis A1.
The periphery 220 of the plate 22 advantageously has a Maltese cross geometry. The second cutouts 223a-d advantageously have forms complementing or substantially complementing the form of the locking disk (other than at the first cutout 721).
Thus, the locking disk has a first configuration (comprising several positions including those represented in
Moreover, the locking disk has a second configuration (comprising several positions including those represented in
The device 3, 4, 34 for resetting to a predetermined configuration advantageously comprises:
Preferably, the device for resetting to a predetermined configuration is arranged so as to position the indication member in the first predetermined configuration and the graphic element 20a-f in the second predetermined configuration by the action of one and the same control member, in particular via one and the same action on the control member OC represented schematically in
These position resets are done sequentially or quasi-sequentially with, first of all, the resetting of the indication member to the first predetermined configuration, then the resetting of the graphic element 20a-f to the second predetermined configuration. These steps are nevertheless rapid or instantaneous and are therefore perceived as being simultaneous or substantially simultaneous.
The device 3, 4, 34 for resetting to a predetermined configuration comprises in particular:
As represented in
Advantageously, the hammer is mounted to be mobile in translation relative to the frame 9 along an axis A4.
The first peen 31 can have a degree of freedom relative to the second peen 41 so as to allow a predefined sequencing of resetting to predetermined positions. Also preferably, the first peen 31 is mounted to be mobile, in particular mobile in translation, in particular mobile in translation along the axis A4, relative to a body 35 of the hammer. The hammer comprises an element 31a for returning the first peen 31 to a position of rest relative to the body of the hammer, in particular relative to the second peen 41. This position of rest of the first peen 31 is represented in
For example, the element 31a for returning the first peen 31 to the position of rest comprises an elastic arm 31a which is made of the same material as the first peen 31 or in one piece with the first peen 31.
As represented in
The resetting of the first mobile to the first predetermined configuration P1 also induces a position resetting of the plate 22 to a stable position such as that represented in
Moreover, as represented in
An embodiment of a method for operating a display system described previously or a horological movement described previously or a timepiece described previously is described hereinbelow with reference to
The operating method comprises the following steps.
It is assumed that, in a first step, the display system is in its initialized configuration or has been reset to initial configuration or has been reset to zero. This configuration is represented in
Then, in a second step represented in
Then, in a third step represented in
Then, in a fourth step represented in
“Instantaneous rotation” is understood to mean a rotation of the order of a fraction of a second. This rotation is generated by the return of energy from the spring. Between the configurations of
In a fifth step, the operation of the chronograph system is stopped. The display system then indicates the time measured and recorded. This stop can be ordered by an action of the wearer of the timepiece on a control member.
In a sixth step, the display system is reinitialized or reset to zero.
This sixth step comprises, for example, a first phase in which the wearer of the timepiece exerts an action on the display system, in particular an elementary action of the user on the display system, in particular on the control member, for example a press by the user on the push-piece OC of the display system. The action can be elementary inasmuch as only one elementary movement is necessary to trigger the reinitialization or the resetting to zero. For example, only the press movement on the push-piece is necessary, the return movement not being necessary to the ordering of the reinitialization or of the reset to zero.
Then, as a consequence of the action, the time or time derivative information displayed by cooperation of the indication member and of the limb is reset to a predetermined configuration, in particular is reset to zero. In particular, the indication member 1 is arranged in the first predetermined configuration and/or the graphic element is reset to the second predetermined configuration.
In a first sub-phase of actuation of the hammer under the action of the wearer of the timepiece, the first peen 31 comes into contact with the cam 3 so that the indication member revolves about the axis A1 until it reaches the first predetermined configuration P1. It then follows that all of the first mobile revolves and that the third mobile consequently also revolves to reach a configuration in which the plate can revolve and be brought into a configuration represented by
Once the indication member 1 is arranged in the first predetermined configuration P1, and the peen 31 is in contact with the flat of the heart 3, the hammer 34 can continue its travel so as to allow, in a second sub-phase of actuation of the hammer, the actuation of the cam 4 through the second peen 41 under the effect of the elastic deformation of the arm 31a. The hammer 34 is thus conformed so that it can act on the cam 3 in a first sub-phase of actuation, and that it can act on the cam 4 in a second sub-phase of actuation. The action of the peen 41 on the cam 4 provokes the rotation of the cam 4 about the axis A1 and therefore the rotation of the support about the axis A1. Because of the friction that exists between the support and the plate, the support can, in this operation, revolve without the plate revolving. It is thus possible to reset the graphic element, in particular the support to the second predetermined configuration P2.
According to a second aspect, an embodiment of a timepiece 300 is described hereinbelow with reference to
The timepiece comprises a horological movement. The horological movement can be of electronic or mechanical type, in particular automatic.
The horological movement advantageously comprises a chronograph system, for example a chronograph module.
The horological movement, in particular the chronograph system, comprises an embodiment of a system 150 for actuating the second mobile 21, in particular for actuating a disk displaying time or time derivative information.
The system 150 for actuating the second mobile 21 comprises:
The energy accumulator 8 can comprise the spring 81, in particular the hairspring, fixed at its first end 81b to the frame 9 and bearing at its second end 81a against the second mobile 21, the second mobile comprising several notches 221a-d intended to successively receive the second end of the spring.
The transmission mechanism can comprise the third mobile 71 driven in movement, in particular driven in rotational movement, about the axis A2 parallel or substantially parallel to the first axis A1, the third mobile comprising the finger 72 arranged so as to act on the energy accumulator to tighten it, in particular to act on the second end of the spring to displace it from one notch to another.
The authorization mechanism can comprise a fourth mobile provided with a locking disk 720 provided with the first cutout 721, driven in movement, in particular driven in rotational movement, about an axis parallel or substantially parallel to the first axis A1 and cooperating with several second notches 223a-d produced on the first mobile to lock or authorize the rotation of the second mobile, the locking disk having a first configuration in which the rotation of the first mobile is authorized and a second configuration in which the rotation of the first mobile is prohibited by obstruction with the locking disk.
The axes of rotation of the locking disk and of the third mobile can coincide or be distinct.
Preferably, the third and fourth mobiles are one and the same mobile.
Preferably, the notches are formed at the vertices of a regular polygon centered on the first axis A1.
Preferably, each notch is linked by guiding surfaces or flanks 222a-d to the adjacent notches.
Preferably, each notch is arranged so as to cooperate with the energy accumulator to define a stable position of the second mobile, the energy accumulator producing an effort causing to return the second mobile to the stable position defined by the cooperation of the accumulator, of the notch and of the abutment 83a.
The second mobile can comprise a body 22 or plate provided with the notches and a member 2 of the second mobile 21, in particular a support or disk 2, mounted to be mobile with friction, in particular mobile by indenting, on the body about the axis A1.
The actuation system can comprise a device 4, 34 for resetting the first mobile to a predetermined configuration comprising an element 4 for resetting the member 2 of the second mobile 21 to a predetermined configuration, in particular a cam 4.
According to the second aspect, an embodiment of a method for operating an actuation system as described previously or a horological movement as described previously or a timepiece as described previously comprises the following steps:
The action of setting to a first configuration can comprise the following steps:
According to another aspect, an embodiment of a method for operating an actuation system as described previously or a horological movement as described previously or a timepiece as described previously comprises the following steps:
As seen previously, as a consequence of the action step, the second mobile is reset to a predetermined configuration, in particular the body 22 can be brought into the first predetermined configuration P1 and/or the member 2 can be brought into the second predetermined configuration P2. This is performed for example by the action of the hammer.
In a first sub-phase of actuation of the hammer, under the action of the wearer of the timepiece, the first peen 31 comes into contact with the cam 3 so that the third mobile revolves accordingly to reach a configuration in which the body 22 can revolve and be brought into a configuration represented by
Once the body is arranged in the first predetermined configuration P1 and the peen 31 is in contact with the flat of the heart 3, the hammer 34 can continue its travel so as to allow, in a second sub-phase of actuation of the hammer, the actuation of the cam 4 through the second peen 41 under the effect of the elastic deformation of the arm 31a. The hammer 34 is thus conformed so that it can act on the cam 3 in a first sub-phase of actuation, and that it can act on the cam 4 in a second sub-phase of actuation. The action of the peen 41 on the cam 4 provokes the rotation of the cam 4 about the axis A1 and therefore the rotation of the member 2 about the axis A1. Because of the friction that exists between the member 2 and the body 22, the member 2 can, in this operation, revolve without the body 22 revolving. It is thus possible to reset the member 2 to the second predetermined configuration P2.
In the different aspects and/or embodiments described previously, the systems, devices and methods have been used to implement a chronograph function. However, according to the different aspects and/or embodiments, the systems, devices and methods can be used for any other horological function, in particular a flyback function.
In the different aspects and/or embodiments described previously, the systems, devices and methods have been used to implement a counter. However, according to the different aspects and/or embodiments, the systems, devices and methods can be used to implement several counters of one and the same timepiece. Thus, several actuation systems and/or several display systems can be provided on one and the same timepiece or on one and the same movement or on one and the same chronograph system. For example:
In the different aspects and/or embodiments described previously, the systems, devices and methods have been used to implement a chronograph function. The chronograph can be started and stopped on demand through a conventional chronograph mechanism.
In the different aspects and/or embodiments described previously, the systems, devices and methods have been described with circular limbs and indicator members performing a complete limb revolution. However, according to the different aspects and/or embodiments, the systems, devices and methods can involve non-circular limbs cooperating with indication members of retrograde type.
In the different aspects and/or embodiments described previously, the systems, devices and methods have been described with a plate or second mobile performing instantaneous 90° jumps. However, according to the different aspects and/or embodiments, the systems, devices and methods can relate to embodiments in which a plate or second mobile performs instantaneous jumps of any other angular value.
In the different aspects and/or embodiments described previously, the systems, devices and methods have been described with three apertures associated with a limb. However, according to the different aspects and/or embodiments, the systems, devices and methods can relate to embodiments in which another number of apertures, in particular 1 or 2 or 4 or 5 or 6 or 10 or 12 apertures, are associated with a limb.
In the different aspects and/or embodiments described previously, the systems, devices and methods have been described with three apertures associated with a limb and arranged at 120° relative to the axis A1 and a support 2 performing 90° jumps relative to the axis A1 and graphic elements arranged every 30° relative to the axis A1 on the support. This configuration is advantageous, because it makes it possible to arrange two sets of graphic elements on the support 2.
Thanks to the solutions described previously, it is possible to modify the interpretation of a position of an indication member relative to a limb by providing a display of the type jumping by at least one limb reference.
Preferably, in the above disclosed embodiments, the at least one modifiable graphic element is arranged such that, in the several configurations of the at least one modifiable graphic element, the at least one modifiable graphic element defines or helps to define several complementary ranges of a value scale of time or time derivative information, notably of a measured time.
For instance, in a first configuration of the at least one modifiable graphic element, the at least one modifiable graphic element defines or helps to define a first range of values displayable on the scale and in a second configuration of the at least one modifiable graphic element, the at least one modifiable graphic element defines or helps to define a second range of values displayable on the scale. Preferably, the first and second ranges are complementary and their union defines a whole scale of values. For instance, the first range of values is [0;30], the second range of values is [30;60] and the whole scale of values is [0;60]. In the embodiment shown on the figures, three modifiable graphic elements are used. In the embodiment shown on the figures:
The first graphic element and the fourth graphic element may be considered as a single first modifiable graphic element.
The second graphic element and the fifth graphic element may be considered as a single second modifiable graphic element.
The third graphic element and the sixth graphic element may be considered as a single third modifiable graphic element.
More generally, the several configurations of the at least one modifiable graphic element may define or may help to define more than two complementary ranges, notably three, four, five or six complementary ranges. The number of complementary ranges is defined by the number of the configurations. Preferably, there are as much distinct or different configurations as complementary ranges. Preferably, the amplitudes of the various complementary ranges are equal.
| Number | Date | Country | Kind |
|---|---|---|---|
| 18170016.2 | Apr 2018 | EP | regional |
