EP1760544A1 - Vorrichtung zur Anzeige von Federspannung - Google Patents

Vorrichtung zur Anzeige von Federspannung Download PDF

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Publication number
EP1760544A1
EP1760544A1 EP05405505A EP05405505A EP1760544A1 EP 1760544 A1 EP1760544 A1 EP 1760544A1 EP 05405505 A EP05405505 A EP 05405505A EP 05405505 A EP05405505 A EP 05405505A EP 1760544 A1 EP1760544 A1 EP 1760544A1
Authority
EP
European Patent Office
Prior art keywords
barrel
coaxial
wheel
mobiles
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05405505A
Other languages
English (en)
French (fr)
Inventor
Claude Curta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Montres Journe SA
Original Assignee
Montres Journe SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Montres Journe SA filed Critical Montres Journe SA
Priority to EP05405505A priority Critical patent/EP1760544A1/de
Publication of EP1760544A1 publication Critical patent/EP1760544A1/de
Withdrawn legal-status Critical Current

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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
    • G04B21/00—Indicating the time by acoustic means
    • 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
    • G04B9/00—Supervision of the state of winding, e.g. indicating the amount of winding
    • 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
    • G04B21/00—Indicating the time by acoustic means
    • G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
    • G04B21/12—Reiterating watches or clocks

Definitions

  • the present invention relates to a power reserve indicator device of at least one mainspring of a timepiece, one end of which is integral with the drum of this cylinder and whose other end is integral with the shaft. of this barrel.
  • the power reserve indicator devices usually comprise differential gears, which, given the size of the parts, especially when it comes to wristwatch, constitutes a relatively complex and delicate system.
  • the object of the present invention is to remedy, at least in part, this disadvantage.
  • this invention relates to a power reserve indicator device according to claim 1.
  • the mobile assembly engaged with the barrel shaft is free to rotate in both directions, this shaft being connected to a gear engaged with a gear of a mechanism for indicating the time by ringing a timepiece by a unidirectional drive device.
  • FIGS. 1 and 2 A peculiarity of the great-time mechanism for a timepiece according to the present invention lies in the fact that it is situated on both sides of the movement of the watch, illustrated respectively by FIGS. 1 and 2.
  • FIGS. 1 and 2 For the sake of clarity, only the necessary organs for the understanding of the invention have been shown.
  • the bridges, the milling of the plate and the organs of the timepiece itself have not been represented, with the exception of the barrel 1 of the mainspring, to the extent that the same barrel 1 serves to drive the gear of the timepiece 2, called the finishing train and the ring gear 3, as shown in Figures 3 and 4.
  • the shaft of the barrel 1 is integral with a winding mechanism 4 which, unlike the traditional ratchet, is not associated with a ratchet and can therefore rotate in both ways.
  • This winding mobile 4 is intended to come into selective engagement with a winding return 5 pivotally mounted on a rocker 6, itself pivoting about the pivot axis of a winding crown 7 in engagement with a winding pinion 8 flip-flop of the winding and setting-up rod 9.
  • the flip-flop 6 still carries two references 10.
  • a time setting lever 14 is engaged with a groove of the winding and setting rod. 9.
  • This pull tab 14 has a pin 14a intended to engage with a surface 6a of the rocker 6 in the setting position of the winding stem 9 (FIG. 13), to set the timer return 10 engaged with the timer wheel 11 of the usual timer train (not shown).
  • the winding and setting rod 9 is associated with a winding stem crown 78 to be screwed onto a member (not shown) integral with the housing for protecting the clockwork mechanism.
  • This type of housing with screwed winding crown crown is well known to those skilled in the art and is used to improve the sealing of the housing to the passage of the winding stem. It does not form part of the present invention and therefore does not need to be described to understand the invention. It is sufficient to know that to allow the screwing of the winding stem crown 78, it must be associated with the winding stem 9 so as to be disengaged from this rod 9.
  • the crown of the winding stem (not shown) comprises, in known manner, a tubular portion which has at its end a portion of polygonal section which, in the unscrewed position of the crown of the winding stem is engaged with a polygonal portion of complementary section (not shown) of the winding stem 9 by a spring (not shown) exerting an axial force tending to move the crown of the winding stem 9, so that when the winding stem crown 78 is unscrewed, the two polygonal clutch parts 78a, 9a are engaged, which makes it possible to drive the winding stem 9 in rotation about its longitudinal axis and to carry out the reassembly of the mainspring or setting time according to the axial position in which this winding stem 9 is put.
  • a tubular element 78 is freely disposed around the winding stem 9, between the tube of the winding stem crown (not shown) and the lever 77.
  • the barrel 1 (FIGS. 5-7) comprises, as usual, a drum provided with a set of teeth 1a in engagement with the high gear of the finishing gear 2. against, unlike a conventional barrel, its lid is pivotally mounted relative to the drum and it carries a toothing 1b engaged with the pinion of the first mobile of the ring gear gear 3.
  • the toothed lid 1b of the barrel 1 is pivotally mounted on a cylindrical portion 1c of the shaft 1d (FIG. 7) of this barrel 1.
  • This toothed lid 1b is connected to a portion of square section 1e of the barrel shaft 1d by a ratchet wheel 15 housed in the thickness of the toothed lid 1b, secured to the barrel shaft by virtue of the square section portion 1e and whose ratchet gear is engaged with two pawls 16 (FIG. 5) , pressed in this ratchet toothing by two leaf springs 17a integral with a split elastic ring 17 resiliently fixed in a circular housing formed in the thickness of the toothed lid 1b.
  • the barrel 1 is again associated with a gear train 20 for the indication of the power reserve (FIGS. 1, 8-12) of the spring of the barrel 1.
  • the gear train 20 Given the fact that the spring of the barrel 1 can disarm also well by its outer end, secured to the barrel of the barrel 1 by driving the work train 2 by its toothing 1a, that by its inner end, integral with the barrel shaft 1d by driving the ring gear 3 by its toothing 1b, it is necessary for the gear train 20 to be able to add the angular displacements of the teeth 1a, 1b and to subtract the angular displacement of the shaft 1d of the barrel consecutive to the winding of the spring of the barrel 1.
  • a first pinion 21 is mounted on the same portion of square section 1g of the barrel shaft 1d as that receiving the winding ratchet 4.
  • a second pinion 22, coaxial with the first 21 is integral with the cylindrical hub 1f of the barrel drum provided with teeth 1a.
  • the first gear 21 meshes with a first wheel 23, while the second gear 22 meshes, via a gear 24, with a second wheel 25, coaxial with the first wheel 23, so that the two wheels 23 and 25 both turn counterclockwise ( Figure 10, 11) when the spring disarms, even if the pinions 21, 22 rotate in opposite directions from one another.
  • the winding ratchet 4 turns the shaft barrel 1d in the opposite direction to that of the clockwise during the winding of the spring barrel 1, the wheel 23 is then driven in the direction of clockwise.
  • the wheel 25 is pivotally mounted on a frame member B ( Figure 12). Between this wheel 25 and the wheel 23, a free wheel 26 is mounted, coaxial with the other two. This free wheel 26 has five openings in each of which a ball 27 is freely mounted. This free wheel 26 also serves as a ball cage. It is mounted on a cylindrical part of a nut 29 (FIG. 12) and is held between a bearing surface of this nut 29 and a bearing surface of a screw 30 screwed into the nut 29. The diameter of the balls 27 is greater than the thickness of the free wheel 26, so that these balls can protrude from both sides of the free wheel 26.
  • the wheel 23 is pivotally mounted in an opening of an elastic arm 28 secured to the frame B of the watch. The pressure exerted by this elastic arm 28 on the wheel 23 serves to allow the wheels 23 and 25 to drive the balls 27 and consequently the freewheel-shaped ball cage 26.
  • This device allows the free wheel 26 to total or subtract the simultaneous angular displacements of the wheels 23, 25 as they rotate in the same direction or in opposite directions relative to each other. Then the rotation of the freewheel 26 is transmitted to two mobile 31, 32 of the power reserve gear train, and to a toothed sector 33 ( Figure 1) of the mobile power reserve indicator, intended to carry a needle 33a disposed opposite a graduation (not shown) carried by the dial of the timepiece.
  • Each snail 34-36 is associated with a ring rake, namely, respectively, the rake hours 37, the rake quarters 38 and rake minute 39.
  • the three rakes 37 -39 are here rotated at the geometric center of the watch movement.
  • Each of these rakes 37-39 is subjected to the force of a return spring 40, 41, respectively 42 ( Figure 2), which tends to rotate in the direction of the clockwise.
  • the return spring 40 acts on a latch 43 for locking the winding stem, the function of which will be explained later.
  • This flip-flop 43 has a toothed sector 43a engaged with a toothed sector 37b of the hour rake 37 (FIG. 19).
  • the mechanism for driving the ring rakes 37-39 when the bell is triggered is illustrated in FIGS. 19 and 20. It comprises, on the axis of the second mobile 3b of the ring gear 3, a free pinion 44 engaged with a toothed sector 37c formed along the inner edge of the hour rake 37.
  • a second pinion 45 identical to the free wheel 44, is mounted on a square section portion of the axis of the second ringing mobile 3b.
  • a clutch rocker 46 pivoted about an axis 46a carries a clutch gear 47 whose thickness corresponds substantially to that of the two pinions 44 and 45, so that when this clutch gear 47 is engaged with these gables 44, 45, it secures the hour rake 37 with the striking gear 3.
  • the triggering mechanism will be described in more detail later. However, the operation of rakes 37-39 can be explained here.
  • the pinion 47 of the clutch rocker 46 is held in engagement with the free pinion 44 by an arm of a trigger lever 48 of the bell, engaged with a roller 46b of the clutch rocker 46, as illustrated by FIG. the position of this lever 48 drawn in solid lines in Figure 19.
  • the lever 48 is moved in the position shown in broken lines in Figure 19, which releases the free gear 44 in engagement with the teeth 37c of the rake 37.
  • the spring 40 can rotate the hour rake 37 clockwise until its feeler 37d abuts one of the rungs of the hours snake 34.
  • the rake hours 37 begins its clockwise rotation, together with the rake of the quarter 38 and minute rake 39.
  • this rake 39 moves its cam 39b in which one end 81a of the locking rocker 81 is engaged, thereby toggling the latch 81 in the direction of the needles shows around its pivot axis 81c, from the position shown in Figure 24 to that shown in Figure 25. Since the other end of this latch is engaged with the opening 18c of the locking lever 18 of the steering wheel 19, it pivots the locking lever 18 in the direction of clockwise, thus removing the brake 18b of the steering wheel 19 of the ring gear, releasing the ring gear 3.
  • the locking lever 18 is on the side of the watch movement opposite the one on which the ring rakes are located, so that the blocking rocker 81 passes through the clockwork to engage the cam 39b of the timer rake 39 (FIG. and 2) which is on the other side of the movement.
  • the triggering lever 48 is controlled, with particular reference to FIGS. 2, 17 and 18, the latter two essentially showing the whole of the trigger mechanism actuated by the clockwork mechanism, as well as the device of FIG. manual release, in the different positions corresponding to the different functions.
  • the triggering mechanism comprises a quarter star 49 fixed on the same mobile of the timepiece as the quarters quarter and minute 36 snail, so that it is driven at a rate of turn per hour.
  • a rocker 50 subjected to the pressure of a return spring 51 comprises an arm whose end intersects the trajectory of the teeth of the quarter star 49 which rotates in the opposite direction of that of clockwise.
  • a pusher 52 is articulated by means of a toggle joint 53.
  • Pusher 52 further comprises a spring 52a which rests on an eccentric 54 secured to the frame and an arm 52b whose role will be explained later.
  • the pusher 52 is intended to push a lever 55 maintained resiliently applied by a return spring 56 against an eccentric stop 57.
  • An end 55a of an elastic arm 55c of this lever 55 carries a pin engaged in a slide 48a provided to the end of a second arm of the trip lever 48.
  • the The pusher is moved into the firing position shown in phantom in FIG. 17, by pivoting the lever 55, whose end 55a then moves the trigger lever 48 to its position shown in phantom, in which position it releases the clutch rocker 46 to drop the ring rakes 37-39 against respective snails 34-36, as previously explained.
  • a ringing arresting cam 61 (FIGS. 1 and 23) is keyed to the last mobile 32 of the power reserve indicator train.
  • the angular position of this cam 61 is chosen so as to block the clutch rocker 46 from the moment when the power reserve of the spring of the barrel 1 reaches a running time of the movement of the timepiece fixed to a certain value, for example 24 hours.
  • This cam 61 is in desmodromic connection with the shaft and the drum of the common cylinder (1) with an angular ratio chosen so that its total displacement angle corresponding to the total winding angle of the mainspring does not exceed 360 ° .
  • This cam 61 is intended to move a locking lever 79 pivoting about an axis 79d, between two positions, an unlocking position shown in solid lines in FIGS.
  • the lever has two projections 79a, 79b.
  • This locking lever 79 is integral with a return spring 79c which bears against the plate (FIG. 1), so that this return spring determines the two positions of the locking lever 79.
  • This locking lever 79 has an opening 79e in which is engaged play with one end of a latch 80 pivoting about an axis 80a oriented perpendicular to the pivot axis 70d of the locking lever 79.
  • This rocker lock 80 presents a flat locking surface 80b, which in its locking position shown in broken lines in FIG. 23 and in continuous line in FIG. 23b, is in the path of an arm 46c of the clutch lever 46.
  • the mechanism for triggering the striking is still connected to a mechanism for triggering this buzzer on demand, which comprises a manual control lever 62 hinged about an axis 62a and whose the tilting is controlled by a pusher 63 acting at one of its ends.
  • the other end of this manual control lever 62 is intended to act on a transmission lever 64 which has a slide 64a in which the pin 55a located at the end of the elastic arm 55c of the lever 55 is engaged.
  • FIG. 17 shows this locking device when the winding stem 9 is in the winding position, corresponding to that of its two axial positions in which it is closest to the center of the movement of the timepiece, drawn in continuous line. .
  • a groove 9a of this winding stem 9 is engaged, like a pull rod, with a latch 65 pivoting about an axis 65a.
  • This latch 65 includes a pin 65b engaged with a return spring 66b secured to a locking cam 66 pivoting about an axis 66a.
  • This locking cam 66 also includes a stopper 66c in the form of an ankle intended to cooperate with the locking lever of the winding stem 43, whose toothed sector 43a engages the toothed sector 37a of the hour rake 37.
  • the winding stem 9 is in the winding position.
  • the manual control lever of the ringer 62 can be actuated about its pivot axis 62a to trigger the striking mechanism, since the locking cam 66 does not prevent an anchor 62b, which extends perpendicular to the end of the lever 62 on which acts the pusher 63, to move.
  • the time-setting rod 9 can be pulled axially towards the outside of the movement, in the setting position, since in the stopping position of the rake of At 37 hours, the latch 43 of the winding stem prevents the locking cam 66 from rotating while retaining its stop 66c.
  • the winding stem 9 can be moved to its setting position shown in continuous lines in FIG. 18.
  • the second position illustrated in dashed lines in Figure 18 shows the winding stem 9 pushed towards the center of the movement of the timepiece, in the winding position.
  • the latching latch 43 is moved counterclockwise, releasing the stop 66c, so that the return spring 66b of the latch cam 66 rotates it clockwise.
  • the portion of the striking mechanism illustrated in Figure 16 relates to the selection of the ring mode selected from three possibilities: the big ring, ringing by passing the hours and quarters every quarter of an hour and more, during the actuation of the manual control lever 62 for striking between two quarters of hours, the minutes, the small bell ringing in passing only the quarters and in addition, when actuating the manual control lever 62 for ringing between two quarters hours, minutes and finally the silent mode, suppressing any ringing in passing.
  • This selection mechanism comprises a circular cam 67 similar to a column wheel of a chronograph mechanism.
  • This column wheel 67 is designed to pass successively from one of the three ring modes to the other in a determined succession, then to start the same cycle again indefinitely by exerting each time a pressure on a control pusher (not shown ) accessible outside the watch box.
  • This column wheel 67 is driven in a counter-clockwise direction by an articulated ratchet 68a 68a controlled by a pusher (not shown) mounted on the watch case, acting in the direction of the arrow F in FIG. end of the rocker 68 opposite that to which the pawl 68a is hinged.
  • a pawl spring 77 places this pawl 68a in engagement with a ratchet wheel 67a set on the column wheel 67 and tends constantly to maintain this pawl 68a, in an angular position relative to the ratchet wheel 67a, corresponding to its rest position illustrated in FIG. 16.
  • Successive pressures in the direction of the arrow F on the end of the rocker 68 opposite to that where the pawl is hinged alternately with the release of this pressure can rotate the column wheel 67 in successive steps.
  • a selector upper cam 67b is disposed above the four columns 67c, with which a pivoted selector rake 69 is engaged under the pressure of a return spring 70.
  • This selector rake 69 meshes with a toothed sector.
  • 69a with a pinion 71 of an indicator (not shown) for displaying the selected ringing mode.
  • Two levers 72, 73 cooperate with the columns 67c of this column wheel 67, a ring / silence control lever 72 and a large ring / small ring control lever 73.
  • Each of these levers 72, 73 carries a control pin 72a. respectively 73a which both traverse the movement of the timepiece.
  • the peg 72a is visible in FIGS. 2, 17 and 18 in which it is shown in solid line in its ringing control position and in dashed lines in its silence control position of the ring triggering mechanism.
  • the selection in silent mode is only operative for the ringing mode said in passing, but not on the manually operated bell, since in this case, the manual control lever 62 acts directly on the lever trigger 48 by means of the transmission lever 64, so that the user always has the possibility to actuate the repetition, even in silent mode, unless the winding and setting rod 9 is in setting position, as explained above, or that the cam 61 locks the clutch lever 46 at the end of winding of the mainspring, to avoid causing the stoppage of the watch movement .
  • the pin 73a of the small and large control lever 73 is visible in the bridge side view of FIG. 2, as well as in FIGS. 17 and 18.
  • This pin 73a is engaged in an elongate opening 74a of a rocker 74 retaining hour rake 37.
  • This rocker 74 is likely to occupy two positions, one drawn in broken lines and corresponding to the great ring, the other drawn in continuous line and corresponding to the small ring.
  • the end 74b of the rocker 74 is placed in the trajectory of the latch 43 for locking the winding stem which is in kinematic connection with the hour rake 37 by its toothed sector 43a engaged with the toothed sector 37b hour rake 37. Therefore, in this position, the rocker 43 can move only a limited angle.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
EP05405505A 2005-09-01 2005-09-01 Vorrichtung zur Anzeige von Federspannung Withdrawn EP1760544A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05405505A EP1760544A1 (de) 2005-09-01 2005-09-01 Vorrichtung zur Anzeige von Federspannung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05405505A EP1760544A1 (de) 2005-09-01 2005-09-01 Vorrichtung zur Anzeige von Federspannung

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EP1760544A1 true EP1760544A1 (de) 2007-03-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102947763A (zh) * 2010-06-04 2013-02-27 美利时国际股份有限公司 表的动力储存指示器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH294760A (fr) * 1950-09-16 1953-11-30 Schild Sa A Indicateur de développement du ressort moteur de montres et autres appareils à mouvement d'horlogerie.
US2698066A (en) * 1952-07-18 1954-12-28 Elgin Nat Watch Co Power reserve indicator
DE1015747B (de) * 1952-12-08 1957-09-12 Felsa A G Differentialgetriebe fuer die UEberwachung der Federspannung in Uhren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH294760A (fr) * 1950-09-16 1953-11-30 Schild Sa A Indicateur de développement du ressort moteur de montres et autres appareils à mouvement d'horlogerie.
US2698066A (en) * 1952-07-18 1954-12-28 Elgin Nat Watch Co Power reserve indicator
DE1015747B (de) * 1952-12-08 1957-09-12 Felsa A G Differentialgetriebe fuer die UEberwachung der Federspannung in Uhren

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102947763A (zh) * 2010-06-04 2013-02-27 美利时国际股份有限公司 表的动力储存指示器

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