Patent Application
20230205138
The present application is based on, and claims priority from the prior European Patent Application No. 21217368.6, filed on Dec. 23, 2021, the entire contents of which are incorporated herein by reference.
The invention relates to the field of horology, and in particular that of horological movements.
More particularly, the invention relates to a horological movement including a “stop-seconds” function that can be operated from two separate actuating members.
The “stop seconds” function is a well-known horological complication and allows the seconds display to be immobilised in order to set the hands on a watch more accurately.
This function is implemented by immobilising the regulator of the watch by means of an adapted stop mechanism, after a user has operated a crown of the watch. Once the hands have been set on the watch, the regulator is released by operating the crown again.
In certain horological movements of the prior art, the “stop seconds” function is associated with a setting of the seconds display to a reference position, the reference position generally corresponding to the zero position, i.e. 12:00.
The combination of these functions allows the hands to be set even more accurately.
There is, however, a need, in certain applications, that is not fulfilled by the devices in the prior art, for a watch wherein the stop seconds and seconds display reset functions can be implemented by separate means and in as simple a design as possible.
The invention overcomes the aforementioned drawbacks.
To this end, the present invention relates to a horological movement comprising a wheel set of a time value display, such as a seconds wheel set, a power source connected to this wheel set of a display for driving it such that it rotates, and a regulator intended to regulate the motion of this wheel set of a display, said horological movement comprising a control mechanism adapted to take an active state wherein it cooperates with the regulator to immobilise it, and an inactive state wherein it releases the regulator such that the latter is able to regulate the motion of the wheel set of a time value display.
The control mechanism includes two motion transmitting modules, each intended to be connected to an actuating member specific thereto, each of said modules being configured to drive the control mechanism between the inactive state thereof and the active state thereof upon operation of the actuating member to which it is connected.
In specific embodiments, the invention can further include one or more of the following features, which must be considered singly or according to any combinations technically possible.
In specific embodiments, the control mechanism is adapted to take an active state wherein it cooperates with the wheel set of a time value display to drive it such that it rotates into a predefined position, and an inactive state wherein it releases the wheel set of a time value display so as to allow the displacement thereof.
In specific embodiments, the control mechanism includes:
In specific embodiments, the control mechanism includes a hammer arranged such that it can rotate, the planetary yoke being configured to connect the transmitting modules and the hammer such that said hammer takes an active position wherein it rests such that it bears against a heart cam integral with the wheel set of a time value display when the planetary yoke is in the active position.
In specific embodiments, the stop lever, the hammer and the transmitting yoke are capable of moving in rotation about the same axis of rotation.
In specific embodiments, the hammer and the stop lever are biased into the respective active position thereof by a spring and arranged to abut against a retaining element of the planetary yoke.
In specific embodiments, one of the transmitting modules, referred to as the “first transmitting module”, includes a transmitting lever extending between two ends, said lever being capable of moving in rotation at one of the ends thereof and comprising, at the other end, a protrusion by means whereof it cooperates with the transmitting yoke so as to drive it such that it rotates when it is operated by one of the actuating members, referred to as the “first actuating member”, to which it is connected.
In specific embodiments, the transmitting lever is arranged to bear against an arm of the transmitting yoke such that it opposes the force exerted by the spring tending to drive said stop lever and said hammer into the active position thereof.
In specific embodiments, one of the transmitting modules, referred to as the “second transmitting module”, includes a connecting yoke intended to be connected to one of the actuating members, referred to as the “second actuating member”, the connecting yoke and the planetary yoke being connected to one another by a connecting rod, such that the operation of the second actuating member causes the planetary yoke to rotate.
In specific embodiments, the connecting rod is attached to a first flange of the planetary yoke, said first flange being opposite a second flange comprising the retaining element against which the hammer and the stop lever are arranged to bear.
In specific embodiments, the stop lever and the hammer are arranged to bear against a pin extending from a surface of the second flange of the planetary yoke, said pin being arranged to form the retaining element.
In specific embodiments, the pin is engaged in a cavity in the stop lever, with the spring being arranged to bear against the hammer only.
According to another object, the present invention relates to a watch comprising a horological movement as described hereinabove, and wherein the actuating members are constituted by a crown and by a push-piece.
In specific embodiments of the invention, the push-piece is adapted to cooperate with an actuator of a sympathetic clock, so as to act on the transmitting module with which it is connected upon the operation of said actuator.
Other features and advantages of the invention will be better understood upon reading the following detailed description, which is given as a rough guide and in no way as a limiting guide, with reference to the accompanying drawings, in which:
The present invention relates to a watch 10 comprising a horological movement with a “stop seconds” function as diagrammatically shown in
The horological movement according to the present invention comprises a wheel set of a time value display, such as a seconds wheel set, intended to carry a seconds display 11, such as a seconds hand.
The horological movement further comprises a power source, such as a barrel 12, connected to the seconds wheel set to drive it such that it rotates, in a manner known to a person skilled in the art, and a regulator 13 intended to regulate the motion of the seconds wheel set, as seen in
The horological movement further comprises a control mechanism 20, as shown in
Advantageously, the control mechanism 20 includes two motion-transmitting modules, each intended to be connected to an actuating member specific thereto, both of said transmitting modules being configured to drive the control mechanism 20 between the inactive state thereof and the active state thereof, upon operation of the actuating member to which they are connected.
More particularly, the control mechanism 20 includes a stop lever 21 arranged such that it can move in rotation and taking an active position wherein it rests such that it bears against the regulator 13 when the control mechanism 20 is in the active state. More specifically, as shown in
The control mechanism 20 further includes a hammer 22 arranged such that it can move in rotation and taking an active position wherein it rests such that it bears against a heart cam 110 integral with the seconds wheel set when the control mechanism 20 is in the active state.
Furthermore, the control mechanism 20 comprises a transmitting yoke 23 carrying a planetary yoke 261 configured to connect the transmitting modules with the stop lever 21 and the hammer 22, and so as to take an active position when the control mechanism 20 takes the active state wherein said yoke drives said stop lever 21 and said hammer 22 into the active position thereof. In other words, when one of the actuating members is operated, it causes the displacement of transmitting module to which it is connected, and drives the stop lever 21 and the hammer 22 via the yoke of the planetary yoke 261.
The planetary yoke 261 is attached such that it can move in rotation on the transmitting yoke 23.
Preferably, as shown in
The control mechanism 20 comprises a spring 24 for biasing the control mechanism 20 into the active state thereof. More specifically, the spring 24 is configured to bias the hammer 22 and the stop lever 21 into the respective active position thereof, the latter being arranged to abut against a retaining element carried by the planetary yoke 261. In other words, the spring 24 applies a return force to the hammer 22, which transmits it to the stop lever 21 and to the transmitting yoke 23 via the retaining element.
Furthermore, in these example embodiments of the invention, the hammer 22 is interposed between the stop lever 21 and the transmitting yoke 23.
One of the transmitting modules, referred to as the “first transmitting module”, includes a transmitting lever 25 extending between two ends and being connected to one of the actuating members, referred to as the “first actuating member”, at a pivot 250 arranged between said ends. It should be noted that the features of the first transmitting module are identical in the two example embodiments of the invention shown in the figures.
The first actuating member is preferably formed by an actuator of the watch 10, such as a push-piece 14, adapted to cooperate with an actuator of a sympathetic clock. These actuators are not described in more detail herein as they are not as such the object of the present invention.
The transmitting lever 25 is capable of moving in rotation at one of the ends thereof and comprises, at the other end thereof, a protrusion 251 via which it cooperates with the transmitting yoke 23 so as to drive it such that it rotates when it is operated by the first actuating member. The protrusion 251 can take the form of a pin and bears, as shown in the figures, on one of the arms, referred to as the “first arm” 230, of the transmitting yoke 23 so as to oppose the force exerted by the spring 24 tending to drive said stop lever 21 and said hammer 22 into the active position thereof.
In the example embodiments of the invention shown in the figures, the other transmitting module, referred to as the “second transmitting module”, is arranged opposite the first transmitting module with respect to the transmitting yoke 23, the hammer 22 and the stop lever 21. In other words, the transmitting yoke 23, the hammer 22 and the stop lever 21 are interposed between the two transmitting modules.
As shown in
The second actuating member is preferably formed by a crown 15 of the watch 10, intended to be handled by the user of said watch 10. In a manner known per se, the crown 15 can be connected, by a stem capable of moving in translation, to a pull-out piece, not shown in the figures. The pull-out piece is advantageously configured to transmit a rotational motion to the connecting yoke 260 following a translation of the crown 15. For example, the pull-out piece can be connected to the connecting yoke 260 by a pivot.
The planetary yoke 261 is arranged to cooperate with the hammer 22 and the stop lever 21 such that, when the second actuating member is operated so as to drive the control mechanism 20 into the inactive state thereof, it opposes the force exerted by the spring 24 tending to drive said stop lever 21 and said hammer 22 into the inactive position thereof, without causing the transmitting yoke 23 to rotate.
Conversely, the planetary yoke 261 is arranged to cooperate with the hammer 22 and the stop lever 21 such that, when the second actuating member is operated to drive the control mechanism 20 into the active state thereof, it allows said stop lever 21 and said hammer 22 to be released into the active position thereof under the effect of the force exerted by the spring 24, without causing the transmitting yoke 23 to rotate.
More specifically, in the example embodiments shown in
To summarise, the two transmitting modules are connected to the hammer 22 and to the stop lever 21 by the transmitting yoke 23 and by the planetary yoke 261, for example similarly to a differential gear.
Advantageously, as shown in
It is understood here that the operation of the transmitting lever 25 by the first actuating member, so as to release the control mechanism 20 into the active state thereof, releases said lever to undergo an angular displacement in a first direction of rotation allowing the transmitting yoke 23 to rotate under the effect of the force generated by the spring 24, said force being transmitted to said transmitting yoke 23 by the bearing of the hammer 22 on the second flange 264 of the planetary yoke 261.
In other words, the first actuating member is arranged to cause the transmitting yoke 23 to pivot, whereas the connecting rod 262 and the connecting yoke 260 are stationary, thereby restricting the rotation of the planetary yoke 261 relative to the end of the connecting rod 262 to which the first flange 263 is connected, and driving the hammer 22 and the stop lever 21 via the pin 270.
Conversely, the operation of the transmitting lever 25 by the first actuating member, so as to drive the control mechanism 20 into the inactive state thereof, restricts said lever to an angular displacement in a second direction of rotation resulting in the rotation of the transmitting yoke 23 against the force generated by the spring 24, said force being transmitted to said transmitting yoke 23 by the bearing of the hammer 22 on the second flange 264 of the planetary yoke 261.
Furthermore, the operation of the connecting yoke 260 by the second actuating member, so as to drive the control mechanism 20 into the active state, releases the pivoting, relative to the transmitting yoke 23 and in a first direction of rotation, of the planetary yoke 261 by means of the connecting rod 262, allowing the rotation of the hammer 22 and the stop lever 21 to be released under the effect of the force generated by the spring 24.
In other words, the second actuating member is arranged to cause the connecting yoke 260 to pivot, whereas the transmitting lever 25 and the transmitting yoke 23 are stationary, thereby restricting the rotation of the planetary yoke 261 relative to the transmitting yoke 23, and driving the hammer 22 and the stop lever 21 via the pin 270.
Conversely, the operation of the connecting yoke 260 by the second actuating member, so as to drive the control mechanism 20 into the inactive state, restricts the pivoting, relative to the transmitting yoke 23 and in a second direction of rotation, of the planetary yoke 261 by means of the connecting rod 262, driving the rotation of the hammer 22 and the stop lever 21 against the force generated by the spring 24.
In particular, in the example embodiment shown in
More specifically, as shown in detail in
It should be noted that the cavity, in other example embodiments, can be provided on a second flange 264 of the planetary yoke 261 and that the pin 270 can extend from a surface of the transmitting arm 211 of the stop lever 21.
Generally speaking, it should be noted that the example embodiments considered hereinabove have been described by way of non-limiting examples, and other alternative embodiments can thus be envisaged.
In particular, the first and second actuating members can be formed by any suitable element, such as a bezel, a push-piece, or a lever, etc.
Furthermore, the disposition of the hammer 22 and of the stop lever 21 can be reversed in the sense that the stop lever 21 can be interposed between the hammer 22 and the transmitting yoke 23, whereby the pin is thus engaged within a cavity made in the hammer 22 and the spring 24 bears against the stop lever 21.
| Number | Date | Country | Kind |
|---|---|---|---|
| 21217365.2 | Dec 2021 | EP | regional |
