Clock mechanism, clockwork and clock

Description

[0001] The invention relates to a clockwork mechanism for indicating and storing time information and a correction mechanism for a time display device. The invention also relates to a clock movement comprising such a mechanism. The invention further relates to a timepiece, in particular a watch, comprising such a movement or mechanism.

[0002] Document EP1475681 discloses a device that allows the display of fractions of a second on a chronograph only when the chronograph is stopped. This system uses a cam attached to a pinion rotating at a rate of one revolution per second. The time information is displayed by means of a rack that engages with the display mechanism and is capable of contacting the cam. When the chronograph is stopped, the rack's contact point is in contact with the side of the cam and is thus positioned to display the time information. When the chronograph is started or reset, the rack's contact point is lifted to a predetermined position by an arm or a column wheel so that it disengages from the cam's movement.

[0003] Document CH700902 concerns a switching mechanism capable of displaying time information on demand. This system is unique in that it only displays day / night information when the timepiece is being set. It incorporates the characteristic elements of a conventional retrograde display device. In normal operation, when the crown is in the pushed-in position, the end of the stem controls the angular position of the feeler so that its tip does not contact the side of a cam that completes a full revolution every 24 hours. In the time-setting position, the stem releases the feeler, which is then pressed against the cam by a return spring.

[0004] Document EP2159652 concerns a time display mechanism that can show or hide the current time. When a control lever is operated, the hands indicate the time conventionally or are positioned in a predetermined location. This device uses snail cams that engage with the hour and minute hand kinematic chains, respectively. The time information is displayed by means of racks that engage with the hour and minute hands, respectively. When the time is not displayed, the racks, when the control lever is operated, are positioned so that their contacts are outside the travel of the cams. Consequently, the hands are in a predetermined position.

[0005] Application EP1918792A1 concerns a disengagement device added to the conventional retrograde display mechanism. During the adjustment phase of the timepiece, this device allows the retrograde display lever's probe to be moved away from the spiral cam's path via a return lever. This return lever has a toothed portion designed to act directly on the pinion carrying the retrograde time information, under the actuation of a control cam itself driven by the rod. This solution thus requires a significant number of components in addition to the retrograde mechanism. Furthermore, immobilizing the retrograde display lever during a possible retrograde information memorization phase also immobilizes the return lever. Therefore, in this configuration, it is not possible to operate this return lever. Consequently, it is not possible to adjust the timepiece's adjustment mechanism due to the risk of breakage.

[0006] Application EP0851321A2 concerns a multifunction watch equipped with, among other things, a quick-set time mechanism. This mechanism is kinematically linked to a retrograde display device for the day of the week. When the stem actuating this correction device is pulled out, the retrograde lever's feeler is raised by the translation of a return lever, which is itself moved by the rotation of the stem. Thus, when the stem is moved to the quick-set time position, the retrograde lever's feeler is disengaged from the path of the snail cam, and the retrograde day-of-the-week hand is positioned in a predetermined location. Furthermore, it appears that if the retrograde display lever becomes immobilized during a potential retrograde information memorization phase, the return lever cannot move.Thus, in this configuration, the rod cannot be pulled and the correction position reached.

[0007] Document CH703470A2 describes a timepiece with a main display for the current time and a secondary chronograph display. The time can be set simultaneously or independently by selecting a different position for pulling a crown.

[0008] Based on current technology, it appears that no switching mechanism exists capable of selectively displaying current information or stored information on the same display. Indeed, known switching mechanisms only allow for the selective display of current information or a predetermined, non-adjustable value. To achieve this, a device connected to the display unit allows a lever on the display unit, mounted on the clockwork mechanism, to be locked into a predetermined position.

[0009] From a prior art perspective, it appears that there is also no correction mechanism for a retrograde device that can be operated at all times.

[0010] The object of the invention is to provide a timekeeping mechanism for indicating and storing time information and a correction mechanism for a time display device. In particular, the invention proposes a timekeeping mechanism for indicating and storing time information that allows for the selective display of current information and stored information by the same display element, and a correction mechanism for a time display device that allows for the correction of a timepiece at any time, particularly a timepiece indicating stored time information.

[0011] This objective is achieved by a device as defined in the attached independent claim 1. Specific embodiments are defined in the dependent claims.

[0012] Except for technical or logical incompatibility, any feature or combination of features of the first aspect of the invention may be combined with any feature or combination of features of the first aspect of the invention.

[0013] The attached drawings represent, by way of example, embodiments of clockwork mechanisms according to the invention. THE figures 1 to 3 These are schematic views of an embodiment of a timepiece according to a first aspect of the invention. Figures 4 and 5 These are schematic views of an embodiment of a mechanism according to the first aspect of the invention. figures 6 and 7 These are schematic views of the embodiment of the timepiece according to the first aspect of the invention, these views illustrating the operation of the timepiece. figures 8 to 13These are detailed schematic views of the embodiment of the mechanism according to the first aspect of the invention. figures 14 to 17 These are schematic views of an embodiment of a timepiece according to a second aspect of the invention. figures 18 to 22 are schematic views of an embodiment of a mechanism according to the second aspect of the invention.

[0014] A first embodiment of a timepiece 1 according to the first aspect of the invention is described below with reference to figures 1 to 13 The timepiece is, for example, a watch, in particular a wristwatch. It includes a movement 2. This movement itself includes a mechanism 3 for indicating and storing time information, one embodiment of which is described below.

[0015] As will be described below, the timepiece, particularly the movement and more specifically the mechanism, has the unique feature of selectively indicating current time information and stored time information, specifically a stored portion of the current time information, using the same display element. This is controlled by actuating a single control element 4. Such a mechanism 3 for indicating and storing time can, for example, be useful for marking a time, a time-related piece of information, or any time-derived information on demand by a conventional display element normally intended to display the current information in question.

[0016] In the described embodiment, the stored information is represented or indicated by a retrograde system. Thus, the figure 1This illustrates an embodiment in which a retrograde seconds hand S' is added to the conventional seconds hand S of the timepiece. The movement of the display element S', here constituted by a seconds hand, can therefore be retrograde.

[0017] In normal operation, as shown in the figure 1 The S' hand, like the second hand S, indicates the current second. A first action, in particular pressing the control element 4 as shown in the figure 2This causes the hand S' to stop without affecting the seconds hand S, which continues its course. In this state, the timepiece displays both the current time and the stored time information simultaneously. A second action, such as pressing the same control mechanism, repositions the hand S' so that it again displays the current second, as illustrated in the figure. figure 3 The two hands S and S' are thus synchronized again. Each hand therefore displays the current second.

[0018] The mechanism 3 for indicating and storing temporal information includes a transmission device 7 linking a counting chain 5 or counting system capable of providing the temporal information and a temporal information display element S' arranged to selectively display the current temporal information and the stored temporal information. The transmission device includes: a cam C; a lever device L including a lever L1, a feeler L2 and a first elastic element R returning the lever and the feeler to a determined relative position.

[0019] The lever L1 is kinematically linked to the display organ S' of the time information and the probe L2 is returned by a second elastic element RL against the cam C.

[0020] In this embodiment, the time information relates to seconds. It can just as easily relate to hours, minutes, or even another unit of time measurement.

[0021] The display element may include or consist of a hand cooperating with markings bearing indications and / or graduations. The term "counting chain" or "counting system" refers to any device that drives at least the display element. The display element is preferably not part of the counting chain. For example, a counting chain includes an accumulator such as a mainspring barrel, a gear train regulated by a balance wheel and hairspring system, and an escapement.

[0022] By "selectively displaying current and stored time information," we mean that at any given moment, except during transient phases, the display unit indicates either the current time information or the stored time information. These transient phases are instantaneous or near-instantaneous. They last only fractions of a second, for example, less than 0.3 seconds. Therefore, the display unit never arrives at a predefined, time-independent position. Consequently, the display unit continuously performs a function of displaying time information.

[0023] The lever device L is preferably pivoted on a frame 6 of the mechanism, in particular a frame of the movement or of the timepiece.

[0024] As shown in the figure 4Cam C, for example, is a spiral cam. It can be directly mounted on a seconds hand (MS) in kinematic connection with a second display element (S) for the time information. Specifically, the second display element (S) can be driven onto the seconds hand. The shape of cam C is such, for example, that the first display element (S') performs a retrograde movement with instantaneous return. The second display element (S) may or may not be retrograde.

[0025] The lever device L is pivoted about an axis P. As seen previously, the lever device comprises two parts: the lever L1 and the probe L2. Each of these parts is pivoted about the axis P. The two parts are connected to each other by a first elastic element, such as a return spring R. This first return element allows the lever and the probe to be returned to a specific relative position, as illustrated in the diagram. figure 4 .

[0026] Lever L1 carries a toothed section L10, or rake, at one end. This toothed section meshes with a pinion PS' to which the display element S' is kinematically linked. Specifically, a seconds hand S' can be driven onto the pinion PS'. The second part of the lever mechanism includes a feeler L2 with a feeler head L20, which bears against the profile of the cam C under the action of a second elastic return element RL.

[0027] In normal operation, that is, when the display elements S and S' are synchronized, the lever mechanism behaves as a rigid element. It can therefore be considered a rigid component pivoted around the axis P. Indeed, the first elastic element R helps to maintain the lever and the probe in a predetermined position relative to each other. This predetermined position is defined by stops provided on the lever and the probe, which cooperate by providing resistance in the predetermined position. For example, a pin GL2 is driven into the probe L2 and is positioned to abut against a flank FL1 of the lever L1, as shown in the diagrams. Figures 4 and 5 Alternatively, the pin could be driven into lever L1 and cooperate with a side of lever L2 or another element of the probe.

[0028] Thus, a counter-clockwise rotation of cam C induces a clockwise rotation of lever L so that the teeth L10 can drive the display member S' in synchronization with the second display member as shown in the figures 6 to 9 By "synchronization," we mean that the two display units indicate the same time value. However, their movements may not be identical. In particular, their angular velocity values ​​may be different.

[0029] Advantageously, the mechanism 3 includes a locking device LB for lever L1. The locking device can be actuated by the control member O, in particular the pusher 4, to selectively position the locking device in a first position leaving lever L1 free or in a second position blocking or immobilizing lever L1.

[0030] To do this, the control member O can actuate the blocker LB via a memory control element RC, such as a cam, in particular a column wheel.

[0031] The blocker can act on one end L100 of the lever L1 and / or can act by friction on the lever L1.

[0032] When the display units S and S' are synchronized, the locking lever or blocker LB is positioned so that it cannot act on the lever L1 as shown in the figure 10 .

[0033] This LB locking mechanism is, for example, controlled by a memory control element such as a cam, which may take the form of a column wheel RC that is angularly indexed by a jump spring RS. This wheel may have a binary profile RCa, consisting of columns and grooves. In the aforementioned configuration shown in the figure 10, one end LB1 of the LB blocker is supported against one of the columns of the RC cam so that an arm LB10 of the LB blocker is out of reach of the end L100 of the lever L1.

[0034] The column wheel RC also has ratchet teeth RCb which are designed to be actuated and driven by an angular pitch by a control lever LC under the effect of the control member O, in particular the pusher 4. Pressing on the latter induces the rotation of the column wheel RC so that the end LB1 of the locking mechanism LB moves within a recess in the column wheel under the effect of a return spring RLB. In this configuration shown on the figure 11The LB10 arm of the LB blocker applies a force F against the oriented end L100, notably as a function of the coefficient of friction f at the interface of the LB10 arm and the end of the lever L1, such that the lever L1 is immobilized or blocked from rotating around the axis P. However, the probe L2 can, for its part, rotate around the axis P under the effect of the rotation of the cam C. This rotation occurs against the first elastic element R, which deforms. This situation results in the immobilization of the display element S', while the second display element S continues its movement.

[0035] A new press on the control element O repositions the column wheel RC in a configuration analogous to that of the figure 10The LB10 arm of the LB blocker then moves away from the L100 end of the L1 lever against the effect of the RLB spring. The L1 lever is thus released and, under the effect of the first elastic element R, repositions itself so that its FL1 side comes to rest against the GL2 pin of the L2 feeler. The L lever mechanism thus resumes its configuration as illustrated in the diagrams. figures 8 to 10 Thus, the display units S and S' are synchronized again.

[0036] During the memorization phase, that is, when the display unit S' indicates the memorized temporal information, as represented in the figure 11 The driving mechanism of the timepiece, via the cam C, opposes the torque produced by the first elastic element R, this torque being added to that produced by the second elastic element RL. This situation is not optimal with regard to the chronometry of the timepiece.

[0037] To remedy this problem, mechanism 3 may include an isolation device LI arranged to have a first position in which probe L2 is kinematically linked to the timing information chain and a second position in which probe L2 is disconnected from the timing information chain. Thus, in the first position, probe L2 is pressed against cam C, and in the second position, probe L2 is disconnected from cam C or held at a distance from cam C.

[0038] Advantageously, the isolation device is arranged so as to act on an end L200 of the probe L2, in particular to act by contact.

[0039] Preferably, the isolation device and the blocker are kinematically linked, or even fixed or rigidly connected to each other. Thus, the isolation device can be in a first position when the blocker is in its first position, and the isolation device can be in a second position when the blocker is in its second position.

[0040] Preferably, an isolation device LI is therefore added to the blocker LB so as to disengage the probe L2 from the path of the cam C when the blocker LB immobilizes the lever L1. To achieve this, the isolation device LI operates in synchronization with the blocker LB via the column wheel RC. Figures 12 And 13 illustrate such an isolation device.

[0041] When the display units S and S' are synchronized as shown on the figure 12The isolation device LI, comprising an isolation lever LI1 and an elastic element RLI such as a spring, is positioned so that it cannot act on the feeler of the lever device L, just like the blocker LB. More specifically, one end LI10 of the isolation device LI is located in a recess of the RCa profile of the cam RC under the effect of a spring RLI so that one flank LI100 of the isolation device LI is located beyond the reach of the flank L200 of the feeler L2.

[0042] During the memorization phase, as shown on the figure 13 The LI100 side of the LI isolation device presses against the L200 side of the L2 probe against the R and RL springs, while the L100 end of the L1 lever is previously immobilized by the LB10 arm of the LB blocker. Thus, in all situations, particularly those shown in the Figures 12 And 13The driving element of the movement of the timepiece, via the cam C, provides maximum resistance to the torque produced by the spring RL. This maximum resistance is encountered in the synchronization situation of the display elements.

[0043] Of course, several memory devices can be combined to store more than one time information, including information that is kinematically linked, such as minutes and seconds, hours and minutes, or hours, minutes, and seconds. Advantageously, these devices can be controlled by a single control unit via a single RC cam designed to synchronize the levers for each of these time information components. This allows for the creation of a mechanism, movement, or timepiece capable of storing: the hours and minutes, or the minutes and seconds, or the hours, minutes and seconds.

[0044] Advantageously, the isolation device is linked to the control element O, specifically to a push button 4, the control element itself being linked to the blocker LB. Thus, the control element allows simultaneous control of the position change of the blocker and the isolation device.

[0045] Also, the control unit may include an actuating element for the isolation device via an RC memory control element, in particular the column wheel, which actuates the LB blocker.

[0046] A second embodiment of a timepiece 1' according to the second aspect of the invention is described below with reference to figures 14 to 22The timepiece is, for example, a watch, in particular a wristwatch. It includes a movement 2'. This movement itself includes a mechanism 3' for correcting a time display device as described below.

[0047] The correction mechanism allows for bidirectional correction of a time-based or time-derived information display device. Such a mechanism is particularly suitable for correcting, in both directions, a time-based or time-derived indication that can be stored by a display and storage device conforming to the first aspect of the invention.

[0048] In the described embodiment, the information to be corrected is indicated retrogradely, specifically retrogradely with instantaneous return. By "retrograde display," we mean any display capable of implementing a display element that can pivot in two directions. Instead of completing a full rotation, the display element travels from a starting point A to an ending point B in front of a scale representing, for example, a time-related quantity. Once the movement from A to B is complete, the display element can, in particular, return instantaneously to point A. In the following, the display elements M and M' are minute display elements. However, they could just as easily be hour or second display elements, or even display elements for another quantity. As in the previous embodiment, the display elements may include or consist of hands.

[0049] The elements of the embodiment according to the second aspect of the invention and the elements of the embodiment according to the first aspect of the invention which are identical or which have the same function bear the same references.

[0050] As in the first embodiment, a spiral cam displays the information and ensures the instantaneous return of the display element M' to a predetermined position via the lever mechanism L and the return spring RL. This cam is kinematically linked to the current time display system, so that it is driven in rotation during forward and backward corrections of this current display. However, the geometry of this cam, characterized by the presence of a steep side to allow the instantaneous return of the lever mechanism and therefore of the display element M', poses a problem during a backward correction. Indeed, a counterclockwise correction is not possible when the lever mechanism's probe reaches the steep side of the cam. This configuration therefore induces a blockage that risks leading to damage or even breakage of components.

[0051] Also, mechanism 3', like the variants of mechanism 3 shown on the Figures 12 And 13 This includes a disengagement system connected to the retrograde system, which allows the probe to be disconnected from the cam. In mechanism 3', this system also allows bidirectional rotation of the cam during the timing adjustment operation. This disengagement system is unique in that it acts directly on the retrograde lever device L, specifically through a rotational movement of the isolation device. Indeed, such a configuration allows for the advantageous interaction of the timing correction and storage functions. Another advantage lies in the fact that it minimizes the number of components required when multiple correction mechanisms are used.

[0052] In prior art solutions, it appears that immobilizing the lever that determines the display of time information, during a possible time information memorization phase, blocks the movement of the return lever that would release said lever. Thus, in this configuration, the rod cannot be pulled out and the correct position cannot be reached.

[0053] The embodiments of correction mechanisms according to the second aspect of the invention make it possible to remedy the aforementioned defects. Indeed, they can be acted upon at any time, that is to say, even when temporal information is stored.

[0054] As shown in the figure 18The mechanism 3' for correcting a display device for temporal information comprises a first display element M for displaying initial temporal information and a second display element M' for displaying the first stored information. The mechanism includes a device for isolating the first and second display elements.

[0055] Thanks to the presence of the isolation lever, it is possible to operate the mechanism as shown below. In normal operation as shown in the figure 14 The second display element M', just like the first display element M, indicates, for example, the current minute. During the correction phase, as shown in the... figure 15That is, when a setting crown CR is pulled out, the second display element M' is positioned in a predetermined position, while a bidirectional rotation of the setting crown drives the first display element M in both directions. The predetermined position is preferably time-invariant.

[0056] During the memorization phase, as represented on the figure 16 Under the actuation of the control element O, the second display element is stopped while the first display element continues its movement. In this configuration, as shown on the figure 17 The adjustment ring CR has no effect on the second display element M' which remains in its position as defined by the control element O. A bidirectional rotation of the adjustment ring CR then causes the first display element M to rotate in both directions.

[0057] Thus, the isolation device has a first configuration in which the positions of the first and second organs are linked and a second configuration in which the positions of the first and second organs are independent.

[0058] The mechanism 3' may include, as in the first embodiment, a spiral cam C directly carried by a bearing CH on which the first display element is fixed, in particular driven. The second display element M' is driven by a retrograde system analogous to that described in the first embodiment.

[0059] The isolation device can be configured so that it can be actuated by a pull T of the correction mechanism and by an RC cam of the memorization mechanism.

[0060] In normal operation as shown in the figure 18That is, when the first and second display elements are linked or synchronized, the isolation device is in the first configuration. More specifically, the isolation device is shaped or arranged so as to be outside the reach of the retrograde lever device L. More specifically, one end LI10 of the isolation device LI is located in a recess of the binary profile RCa of the cam RC under the effect of a spring RLI such that one flank LI100 of the isolation device LI is located outside the reach of one flank L200 of the probe L2.

[0061] The LI isolation device can be actuated by a correction element, in particular a TR rod or a T pull, to selectively position the L2 probe in a first position defined by the first configuration of the LI isolation device and in a second position defined by the second configuration of the isolation device.

[0062] The actuation of the LI isolation device by the correction element can induce the rotation of the L10 lever device.

[0063] As previously seen, the isolation device and the correction element can be arranged so that actuation of the isolation device LI by the correction element causes the second display element M' to be positioned in a predefined position, in particular in an extreme or end position. This position can indicate the correction status to the user. During the memorization phase, the display can also be corrected. In this case, the second element M' remains in the memorized position. These functions are ensured by a specific arrangement of the isolation device LI, the correction element T, TR, the memorization control element RC, and the blocker LB. In both cases, the isolation device is in the second configuration. In addition to the arrangement shown in the diagrams... figures 18 to 22 Other arrangements are obviously possible.

[0064] Furthermore, the control element O and the isolation device LI are advantageously arranged so that the control element can actuate the isolation device. In particular, this actuation is achieved via the memory control element RC.

[0065] Thus, the isolation device is in the first configuration unless the control element or the correction element is in a state that conditions the second configuration of the isolation device. The preceding "or" is an "inclusive or," meaning that it is sufficient for at least one of the control element and the correction element to be in a state that conditions the second configuration of the isolation device for the isolation device to be in that second configuration. If both the control element and the correction element are in a state that conditions the second configuration of the isolation device, the isolation device is a fortiori in this second configuration.

[0066] The pull rod T of the correction mechanism operates in a completely conventional manner. It engages with the rod TR via a pull rod stop PT, so that it rotates when the rod is moved in translation. Rod positions: 1. Neutral position, 2. Adjustment position, are also defined conventionally, by the notching produced by a beak of a jumper (not shown in the figures) intended to cooperate with the pull tab.

[0067] In the configuration of the figure 18A side LI1000 of the isolation device is located opposite a pin GT1 of the pull rod T. Thus, pulling the adjusting rod TR causes the isolation device to pivot via the pin GT1, which presses against the side LI1000 of the isolation device. During adjustment, the side LI100 of the isolation device LI actuates the side L200 of the lever device L, which positions the lever device L against the return spring RL at a specific angle to clear the probe L20 from the path of the cam C. This allows bidirectional rotation of the cam C. The kinematic chain CM, designed to correct the display indicated by the first display element M, can therefore be driven in both directions of rotation as shown in the diagram. figure 19 .

[0068] The CM kinematic chain can be activated by the action of a pin GT2 on the pull rod T. In the adjustment position, this chain positions a rocker B against a spring RB so as to engage the CM kinematic chain via the front teeth DF of a sliding pinion PC as shown in the diagram. figure 20 .

[0069] During the memorization phase, as represented on the figure 21Specifically, when the second display element M' is immobilized by a locking lever or stop LB, the isolation device LI is arranged to disengage the probe L20 from the path of the cam C under the action of the control cam RC. More precisely, the end LI10 of the isolation device LI bears against one of the columns of the cam RC so that the side LI100 lifts the side L200 of the lever L2 against the actions of the springs R and RL. In this configuration, the pin GT1 of the pull rod T is out of reach of the side LI1000 of the isolation device LI. Thus, pulling the adjusting rod TR has no effect on the isolation device LI, which is pre-positioned so that the probe L20 is disengaged from the path of the cam C. Bidirectional rotation of the cam C is therefore permitted.The CM kinematic chain intended to correct the display indicated by the first display element M can therefore be driven in both directions of rotation as shown in the diagram. figure 22 .

[0070] Preferably, in the first position of the isolation device LI, the probe L2 is arranged so as to bear against the cam C connected to the first display member M under the effect of the second elastic element. In a second position of the isolation device LI, the probe L2 can be arranged so as to be disconnected from the cam C, or held at a distance from the cam.

[0071] The isolation device LI may include the isolation lever LI1, which is capable of acting on, or arranged to act on, the pivoted lever device L and includes the lever L1, the probe L2, and the first elastic element R, which returns the lever L1 and the probe L2 to a predetermined relative position. The lever L1 is kinematically linked to the second display element M'.

[0072] The isolation device, the correction element and the probe are arranged so that the probe is positioned in the second position by the correction element TR, T when the blocker LB is in a first position leaving the lever L1 free.

[0073] The LB blocker can cooperate with the RC memory control element to selectively position the blocker in a first position leaving lever L1 free or in a second position blocking lever L1.

[0074] The LI isolation device can be arranged to act on one end L200 of the probe L2 and / or to act by obstruction on the probe.

[0075] In other words, according to the second aspect of the invention, the isolation device preferably comprises: a first element intended to link it kinematically to the correction element, in particular by cooperation by contact, a second element intended to link it kinematically to the memorization control element, in particular by cooperation by contact, a third element intended to link it kinematically to the probe, in particular by cooperation by contact.

[0076] The configuration, including the position, of the correction element and the configuration, including the position, of the memory control element determine the configuration, including the position, of the isolation device. The configuration, including the position, of the isolation device and the configuration, including the position, of the memory control element, in turn determine the configuration, including the position, of the probe.

[0077] Of course, several correction devices can be combined to correct more than one time information, particularly information that is kinematically linked, such as the hour and minute indications. Advantageously, these devices can be controlled by a single pull rod T and a single control cam RC so as to synchronously actuate isolation levers specific to each of the time display elements. Preferably, the isolation levers LI and the pull rod T can form a single kinematic chain.

[0078] In the various embodiments, the locking mechanism could be actuated directly by a control element such as a push button, without using a column wheel. In this case, the stored information can be displayed only when the user acts on the control element.

[0079] In the various embodiments, the LB blocker can be arranged so that it can block the L1 lever regardless of the position of the L1 lever during the "memorization" phase. In other words, during the "memorization" phase, the LB blocker can be arranged so that it can stop the display element S' regardless of the position of the display element S'.

[0080] In the various embodiments, the lever device L can be manufactured as a single piece or as a single unit. In this case, the first elastic element R is made by an elastically deformable part, in particular an elastically deformable part separating the lever L1 and the probe L2.

[0081] In the various embodiments, "memorizing temporal information" refers to the act of storing temporal information in memory. This storage action is triggered by a user action. This storage action involves storing the current or instantaneous temporal information at the time of the user's action. Thus, with each specific user action, new temporal information can be stored. The display of this stored temporal information can be maintained. Storing temporal information involves freezing the current or instantaneous temporal information. Other components can continue to display the current temporal information while some are frozen or blocked to indicate the stored temporal information.

[0082] In the different embodiments, the first elastic element and the second elastic element are distinct.

[0083] In the various embodiments, the probe L2 can be articulated or pivoted on the lever L1.

[0084] Positioning display elements in one or more random or fixed positions, i.e. in one or more positions that cannot be defined or modified by the user, as can be found in on-demand display mechanisms, does not constitute memorization within the meaning of the invention.

[0085] The first and second aspects of the invention can obviously be combined, except in cases of technical or logical incompatibility.

Claims

1. A display device comprising: - a first display member (M) for displaying first time information, - a second display member (M') for displaying said stored first time information, notably a second display member (M') of the retrograde type, and - a correcting mechanism (3') comprising an isolating device (LI) for isolating the first and second display members, the storage of said first time information consists in fixing, by a user action, the second display member (M'), while it indicates the current time information.

2. The device as claimed in claim 1, in which the isolating device has a first configuration in which the positions of the first and second display members are linked and a second configuration in which the positions of the first and second display members are independent.

3. The device as claimed in the preceding claim, in which the isolating device (LI) is actuated by a correction element (TR, T), notably a stem (T), for selectively positioning the isolating device (LI) in the first configuration of the isolating device (LI) and in the second configuration of the isolating device (LI).

4. The device as claimed in claim 3, in which the isolating device and the correction element are arranged in such a way that actuation of the isolating device (LI) by the correction element (TR, T) causes the second display member (M') to be positioned in a predefined position, notably in an extreme or abutment position.

5. The device as claimed in one of the preceding claims, in which a drive member (O) and the isolating device (LI) are arranged in such a way that the drive member actuates the isolating device, notably via a storage drive member (RC), for example a column wheel (RC).

6. The device as claimed in the preceding claim and as claimed in claim 3, in which the isolating device is in the first configuration unless the drive member or the correction element is in a state conditioning the second configuration of the isolating device.

7. The device as claimed in one of the preceding claims, in which the isolating device (LI) comprises an isolating lever (LI1) capable of acting on a pivoted lever device (L) and including a lever (L1), a follower (L2) and a first elastic member (R) returning the lever (L1) and the follower (L2) to a particular relative position, the lever (L1) being kinematically linked to the second display member (M').

8. The device as claimed in the preceding claim and as claimed in claim 2, in which, when the isolating device (LI) is in the first configuration, the follower (L2) is arranged in such a way as to press against a cam (C) connected to the display member (M) under the effect of a second elastic member (RL), and in which, when the isolating device (LI) is in the second configuration, the follower (L2) is arranged in such a way as to be disconnected from the cam (C) or kept away from the cam.

9. The device as claimed in claim 7 or 8, in which the isolating device (LI) is actuated by a correction element (TR, T), notably a stem (T), to position the follower (L2) selectively in a first position defined by the first configuration of the isolating device (LI) and in a second position defined by the second configuration of the isolating device (LI).

10. The device as claimed in the preceding claim, in which actuation of the isolating device (LI) by the correction element (TR, T) causes rotation of the lever (L1).

11. The device as claimed in one of claims 7 to 10, in which the mechanism comprises an immobilizer (LB) for immobilizing the lever (L1) and collaborating with a storage drive member (RC), notably a column wheel (RC) for selectively positioning the immobilizer in a first position releasing the lever (L1) or in a second position immobilizing the lever (L1).

12. The device as claimed in one of claims 7 to 11, in which the isolating device (LI), the correction element and the follower are arranged in such a way that the follower is positioned in the second position by the correction element (TR, T) when an immobilizer (LB) is in a first position releasing the lever (L1) and / or in which the isolating device (LI), the correction element and the follower are arranged in such a way that the follower is positioned in the second position by the isolating device when an immobilizer (LB) is in a second position immobilizing the lever (L1).

13. The device as claimed in one of claims 7 to 12, in which the isolating device (LI) is designed to act on an end (L200) of the follower (L2) and / or to act through an obstacle on the follower (L2).

14. A timepiece movement (2') comprising a device as claimed in one of the preceding claims.

15. A timepiece (1'), notably a watch, particularly a wrist watch, comprising a movement (2') as claimed in the preceding claim or a device as claimed in one of claims 1 to 13.