Classifications

• • G—PHYSICS
  • G04—HOROLOGY
  • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
  • G04B19/00—Indicating the time by visual means
  • G04B19/22—Arrangements for indicating different local apparent times; Universal time pieces
  • G04B19/23—Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands
  • G04B19/235—Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands mechanisms for correcting the additional hand or hands
• • G—PHYSICS
  • G04—HOROLOGY
  • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
  • G04B27/00—Mechanical devices for setting the time indicating means
  • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
  • G04B27/026—Mechanical devices for setting the time indicating means by making use of the winding means for several clockworks or pairs of hands and/or supplementary functions

Definitions

• the present invention relates to timepieces, and more specifically to mechanical timepieces. It relates more particularly to a timepiece comprising a first indicator displaying a first information, a first drive mechanism of the first indicator, a second indicator displaying a second information, a second drive mechanism of the second indicator kinematically connected to the first mechanism. of the first indicator, a correction mechanism and a device for correcting the second information.
• a timepiece of this type is for example described in patent CH 665 930.
• This part comprises an ordinary indicator of the current time, corresponding to the first information, and additional indicators, to indicate at least one time corresponding to other time zones, corresponding to the second information.
• the part also includes different mechanisms for correcting the hours, and more particularly a traditional time setting mechanism, the control rod type can occupy several axial positions, mechanisms also of the control rod type can occupy two axial positions to correct only additional indicators, and a pusher.
• This timepiece therefore includes at least three mechanisms to operate to correct the current time and overtime, together or separately.
• the number of control means for these mechanisms appearing around the box is important, which increases the costs of production and harms the aesthetics of the timepiece. Sealing is also more difficult to ensure.
• the place occupied by the various mechanisms in the box is consistent, which reduces the possibilities of setting up other mechanisms.
• US 2009/016174 also discloses a correction mechanism for simultaneously correcting two information (local time and GMT time) or only one or other of these information by means of only two external commands.
• this correction mechanism only allows local time correction in one direction.
• the local time and GMT mechanisms are not fully decoupled so that the two minute hands are permanently linked and synchronized.
• this correction mechanism comprises a large number of parts that take an important place in the movement.
• An object of the present invention is therefore to overcome these disadvantages by providing a timepiece comprising two indicators respectively displaying information that can be actuated to correct said information together or separately by means of a limited number of mechanisms .
• a timepiece comprising a first indicator displaying a first information, a first drive mechanism of the first indicator, a second indicator displaying a second information, a second drive mechanism of the second indicator kinematically connected to the first drive mechanism of the first indicator, a correction mechanism and a device for correcting the second information, the correction mechanism comprising correction means arranged to be able to simultaneously correct both information or only the first information.
• the drive mechanism of the second indicator comprises a differential gear arranged to cooperate on the one hand with the device for correcting the second information and on the other hand with the first drive mechanism, so that and the correction device of the second information is arranged to occupy two positions:
• the first drive mechanism of the first indicator and the second drive mechanism of the second indicator being arranged so that the correction mechanism, when operated alone, corrects both the first and second information
• the timepiece according to the invention comprises only two mechanisms to operate to be able to correct the first and second information, together or separately.
• the number of control means for these mechanisms appearing around the box is reduced, these mechanisms being actuated for example by means of the traditional time setting rod and a single pusher.
• FIG. 1 shows a schematic top view of a timepiece according to the invention
• FIG. 2a represents the various mechanisms of the invention, in a normal operating situation, without any corrective action
• FIG. 2b shows in detail the second drive mechanism of the second indicator and the device for correcting the second information in FIG. his first rest position
• FIG. 3 shows in detail the second drive mechanism of the second indicator and the device for correcting the second information in an intermediate position between its first and second positions in order to fill the first correction function
• FIG. 4 shows in detail the second drive mechanism of the second indicator and the second information correction device in its second position, to fill the second correction function.
• a timepiece 1 comprising a main display with a first indicator 2 displaying a first information, such as the current time, and a secondary display to using a second indicator 4 displaying a second piece of information, such as the time corresponding to a time zone different from that of the current time.
• the timepiece 1 comprises a box containing a movement.
• the part 1 comprises a correction mechanism, which is in the variant shown a time correction mechanism comprising in particular, at 3 o'clock, a control rod (not shown) terminated by a ring 6 and able to occupy several axial positions, such as a position for reassembly and a position for correcting the time.
• a pusher 8 On the box of the timepiece is also provided, at 10h, a pusher 8, arranged to control the device for correcting the second information 10, as will be explained below. It is obvious that the pusher 8 and the ring 6 can be provided on the box at any other appropriate place.
• the timepiece further comprises a first drive mechanism of the first indicator 2 comprising, in a manner known to those skilled in the art, a motor roadway 12 kinematically connected here schematically. to a cylinder 13 and frictionally mounted on an axis 2a.
• the axis 2a may directly bear the first indicator 2 or intermediate gear trains, one of which is integral with the axis 2a, may be provided between the axis 2a and the first indicator 2 so that the latter is kinematically linked to the axis 2a.
• train trains can be provided between the barrel 13, the source of energy, and the driveway 12.
• the correction mechanism comprises correction means arranged to simultaneously correct both information or only the first information. More specifically, the correction mechanism comprises a setting pinion 14 secured to the axis 2a.
• the time setting pinion 14 cooperates in a conventional manner with a sliding pinion provided on the control rod when the latter is in the position of correction of the time.
• a driveway 16 cooperating with a drive wheel 18 mounted free to rotate on the frame, itself cooperating with the second drive mechanism of the second indicator 4 .
• the second drive mechanism of the second indicator 4 comprises a differential gear 20 comprising a 4a shaft carrying the second indicator 4, a frame 21 secured to the shaft 4a, at least one planet pinion 22 (see Figure 2b) carried by said frame 21, a first pinion 24 arranged to cooperate with the correction device of the second information 10 and a second pinion 26 secured to a wheel 28 kinematically connected to the first drive mechanism, the first and second pinions 24, 26 being pivotally mounted on the shaft 4a on either side of the planet pinion 22 and being engaged with said planet pinion 22.
• the wheel 28 cooperates with the drive wheel 18 to kinematically connect the first drive mechanism of the first indicator 2 to the second driving mechanism of the second indicator 4.
• the frame 21 comprises a central core and at least two arms 30 joined at their ends by a bar 31 carrying a bearing aligned on a bearing integrated in said core, these two bearings being arranged for pivoting an axis carrying the planet pinion 22.
• the planet pinion 22 and the first and second pinions 24, 26 have conical teeth.
• the second information correction device 10 comprises a star 32 and a braking device 33, each cooperating with the second drive mechanism of the second indicator 4, a jumper 34 fixed on an element immobile with respect to the second driving mechanism of the second indicator 4, (for example the frame), and cooperating with the star 32, and a rocker 36 pivotally mounted on the frame by means of a tenon (not shown) integral with the built and introduced into the hole 36a.
• Said rocker comprises a first arm 37 arranged to actuate the star 32 and a second arm 38 arranged to cooperate with the braking device 33.
• the first arm 37 is terminated by a spout 37a arranged to act on a tooth of the star 32
• the flip-flop 36 is arranged to be actuated by means of the pusher 8.
• the star 32 is fixedly mounted on the first pinion 24 of the differential gear 20 of the second drive mechanism of the second indicator 4, and free to rotate about the shaft 4a.
• the jumper 34 is arranged to block the star 32 during normal operation of the movement.
• the braking device 33 comprises a braking wheel 40 arranged to cooperate with the second arm 38 of the rocker 36 and a brake pinion 42 cooperating with the second drive mechanism of the second indicator, said brake pinion 42 and the wheel 40 being mounted integral in rotation on an axis 44 mounted free to rotate on the frame.
• first and second arms 37, 38 of the latch 36 are arranged so that, when the correction device of the second piece of information 10 is actuated, the star 32 is actuated by the first arm 37 before the second arm 38 cooperates with the braking device 33.
• the shape of the flip-flop 36 is modified and the first and second arms 37, 38 of the flip-flop 36 are arranged so that, when the correction device of the second piece of information 10 is actuated, the second arm 38 cooperates with the braking device 33 before the first arm 37 actuates the star 32.
• the device for correcting the second piece of information 10 is arranged to occupy two positions:
• the second information correction device 10 is inoperative, the first drive mechanism of the first indicator 2 and the second drive mechanism of the second indicator 4 being arranged so that the correction mechanism, here the time correction mechanism, when it is operated alone, corrects both the first and the second information, and
• a second, unstable, so-called correction position according to which the device for correcting the second information item 10 is arranged to fulfill two correction functions: a first correction function of the second piece of information in which the second information correction device cooperates with the second drive mechanism of the second indicator 4 in order to correct only the second piece of information, the time correction mechanism 'not being actuated, and
• the device for correcting the second piece of information 10 is in its stable rest position. This position corresponds to a normal operation of the timepiece, no action being exerted on the pusher 8, shown in Figure 2b in broken lines.
• the driveway 12, driven in rotation by its kinematic connection with the barrel 13, rotates the shaft 2a and therefore the first indicator 2, as well as the driveway 16, which in turn drives the drive wheel 18.
• This drive wheel 18 drives the wheel 28 and its pinion 26, in engagement with the planet gear 22.
• the star 32 is blocked by the jumper 34, so that the planet pinion 22 slides on the pinion 24 integral with the star 32.
• the frame 21 and therefore the axis 4a and the second indicator 4 are rotated.
• the dimensions and the number of teeth of the different gears are chosen so that the second indicator 4 rotates at a speed equal to half the speed.
• the second information correction device 10 When the pusher 8 is pressed, the second information correction device 10 is actuated to fill its first correction function and goes into an intermediate position, shown in Figure 3.
• the action of the pusher 8 on the rocker 36 is represented by a bold arrow. In this position, the correction has begun, the lever 36 having pivoted around the tenon present in the orifice 36a, so that the nose 37a provided at the end of its first arm 37 acts on a tooth of the star 32 to rotate it 1/6 of a turn, the jumper 34 to complete the rotation of the star 32.
• the braking device 33 is not yet activated.
• the pinion 24 of the differential gear, integral with the star 32 is then driven, and cooperates with the planet pinion 22 to move the frame 21 and therefore the axis
• the second information correction device 10 has reached its second position to fulfill its first correction function, the second indicator 4 having been corrected by one hour. To correct the second indicator 4 by several hours, it is necessary to press the pushbutton 8 as many times.
• the star 32 is returned to its overall position by the jumper 34. Then, said jumper 34 maintains the star 32 immobilized during normal operation of the movement.
• the jumper being fixed on a stationary element (such as the frame) relative to the second drive mechanism of the second indicator 4, and thus not embarked with the star 32 on the differential gear 20, the star 32 will always be positioned in the same manner during the normal operation of GMT. This means driving the same star for every use.
• the user wishes to use the correction device of the second piece of information, he will therefore always have the same sensation when he presses on the pusher 8, regardless of the location of the second indicator 4.
• the mechanism obtained is therefore more constant in operation, more accurate and more reliable.
• the second arm 38 of the rocker 36 abuts against the braking wheel 40 so that the brake pinion 42 is blocked. Therefore, the wheel 28 is blocked, as well as the drive wheel 18 and, the driveway 16.
• the control rod is pulled and turned, through the ring 6, to actuate the time setting mechanism, the time setting pinion 14 is rotated and the driveway 12 disengages in a conventional manner, and the driveway 16.
• the second drive mechanism of the second indicator 4 is thus disconnected from the first indicator 2, so that during the correction by the control rod, only the axis 2a and the first indicator 2 are rotated to correct the first indicator 2.
• only the first information is corrected when the correction mechanism is actuated at the same time that the correction device of the second piece of information 10 is held in its second position.
• the first and second information displayed and can be corrected are the current time and a time corresponding to another time zone.
• the invention can be used for the correction of any other information displayed by a timepiece and which may be combined.
• the invention can be applied to a moon phase, corresponding to the first piece of information, combined with a single date, corresponding to the second piece of information.
• the invention allows in this case to correct the date of one or more days in months of less than 31 days without affecting the moon phase, but also to adjust the date and the moon phase at the same time, for example if the watch stopped.
• the dimensions and the number of teeth of the different gears will be chosen according to the different ratios between the information to be displayed.
• the device for correcting the second piece of information 10 used in the present invention makes it possible to group the correction function of the second piece of information and the brake function to correct the first piece of information in a single mechanism. This allows a saving of space and an aesthetic advantage, by reducing the number of control means present on the box.
• the differential gear can completely disconnect the first and second indicators, which are then independent of one another, when the pusher 8 is depressed, and although the wheels are still in contact.
• the displays also included minute indicators, in addition to the hour indicator, the minute indicators could also be decoupled.
• the mechanism according to the invention can be corrected only the first information in both clockwise and anti-clockwise directions.

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• General Physics & Mathematics (AREA)
• Electromechanical Clocks (AREA)

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• 2011
  • 2011-01-13 CH CH00054/11A patent/CH704331B1/fr not_active IP Right Cessation
  • 2011-10-28 EP EP11778579.0A patent/EP2663902B1/fr active Active
  • 2011-10-28 WO PCT/EP2011/069070 patent/WO2012095198A1/fr not_active Ceased

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