EP2503403A1 - Sicherheitsvorrichtung für Federgehäuse eines Uhrwerks - Google Patents

Sicherheitsvorrichtung für Federgehäuse eines Uhrwerks Download PDF

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Publication number
EP2503403A1
EP2503403A1 EP11159128A EP11159128A EP2503403A1 EP 2503403 A1 EP2503403 A1 EP 2503403A1 EP 11159128 A EP11159128 A EP 11159128A EP 11159128 A EP11159128 A EP 11159128A EP 2503403 A1 EP2503403 A1 EP 2503403A1
Authority
EP
European Patent Office
Prior art keywords
barrel
toothing
control member
mechanism according
locking
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Withdrawn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
EP11159128A
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English (en)
French (fr)
Inventor
Sylvain Le Hirez
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.)
De Grisogono SA
Original Assignee
De Grisogono 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 De Grisogono SA filed Critical De Grisogono SA
Priority to EP11159128A priority Critical patent/EP2503403A1/de
Publication of EP2503403A1 publication Critical patent/EP2503403A1/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Withdrawn legal-status Critical Current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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor
    • G04B1/20—Protecting arrangements against rupture or overwinding of the mainspring located in the barrel or attached to the barrel
    • 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
    • G04B19/06—Dials
    • G04B19/16—Shiftable dials, e.g. indicating alternately from 1 to 12 and from 13 to 24

Definitions

  • the present invention relates to a clock mechanism comprising a barrel housing a barrel spring whose first and second ends are respectively integral with a first toothing, inlet, and a second toothing, outlet, a first control member arranged to allow the winding of the mainspring by means of the first toothing, and a safety device arranged in such a way that it at least indirectly ensures the locking of the first control member when the mainspring has a load level higher than a first predefined value.
  • a disadvantage of these stop systems lies in the fact that the winding train located between an external control member actuated by a user and the barrel may be damaged if the user insists once the stop system is in operation. locked position.
  • the outer end of the mainspring is generally secured to the drum by means of a sliding flange, to prevent its breakage when a user continues to operate the winding member while the spring is fully loaded.
  • a main object of the present invention is to propose an alternative to the mechanisms known from the prior art, by proposing a safety device for winding the mainspring which is both reliable and resistant, and which is also scalable, in other words, that he can perform other functions.
  • the present invention relates more particularly to a clock mechanism of the type mentioned above, characterized in that it comprises a differential gear comprising a first input presenting a first kinematic connection with the first toothing, a second input having a second kinematic link with the second toothing, and an output having a third kinematic link with the safety device for controlling the latter.
  • the safety device is deported with reference to the barrel, preferably at a location of the corresponding clock movement that was not occupied by the implementation of another mechanism.
  • the structure of the watchmaking mechanism according to the invention possibly allows to consider its interaction with additional mechanisms of the corresponding watch movement.
  • this mechanism may comprise a second control member arranged to release the second toothing in response to a predefined action of a user, the safety device being also arranged to ensure at least indirectly the locking of the second member when the barrel spring has a load level lower than a second preset value.
  • the safety device comprises a locking wheel whose displacements are controlled from the output of the differential gear and having a first stop arranged to lock at least indirectly the first gear member. control when the mainspring has a load level higher than the first preset value.
  • the locking wheel may comprise a rack whose movements between first and second extreme positions are controlled by a driving wheel connected kinematically to the output of the differential gear, the stop cooperating with the first control member in the first gear. rack position.
  • the safety device may also comprise a second stop arranged to lock the second control member when the mainspring has a lower load level than the second preset value.
  • the use of the mainspring can be optimized according to its operating range.
  • the security device may comprise a first counting mobile connected kinematically to the output of the differential gear and carrying a first cam having substantially the shape of a disk portion and a finger adjacent to the cam, and a second counting wheel comprising a toothing arranged to move the locking wheel and a second cam having at least partially the shape of a Maltese cross with at least two branches, the first and second counting wheels being arranged in such a way that the first cam is able to cooperate with the second cam to block the rotation of the second mobile, and the finger is likely to cooperate with the second cam to rotate it.
  • the mechanism according to the invention guarantees a high level of security associated with low energy consumption.
  • the locking mobile can carry a first arm having a free end defining the first stop and a first resilient member arranged to act on the first arm and tend to position the first stop in a position adapted to lock the first control member .
  • the locking mobile may further carry a second arm having a free end defining the second stop and a second elastic member arranged to act on the second arm and tend to position the second stop in a position adapted to lock the second member control.
  • the present invention also relates to a watch movement comprising a mechanism corresponding to the above characteristics, in which the second toothing presents a kinematic connection with a movable display member and an angular positioning indexed to the angular positioning of the movable display member.
  • the movable display member may be a rotary dial.
  • the watch movement may comprise a striking mechanism intended to be actuated from a specific barrel associated with a safety device according to the present invention.
  • FIG. 1 represents a simplified front view of a watch movement according to a preferred embodiment of the present invention, in a bridge side view;
  • the figure 2 represents a simplified perspective view of a first construction detail of the watchmaking movement of the figure 1 , seen from a first side;
  • the figure 3 represents a simplified perspective view of the construction detail of the figure 2 seen from his second face;
  • the figure 4 represents a simplified perspective view of a second construction detail of the watch movement of the figure 1 .
  • the figure 5 represents a simplified perspective view of a third construction detail of the watch movement of the figure 1 .
  • the figure 1 represents a simplified front view of a watch movement according to a preferred embodiment of the present invention, in a bridge-side view.
  • the watch movement is intended for the design of a timepiece comprising a rotary dial (visible on the figure 4 ) and therefore comprises a drive device of this rotary dial, housed in the bottom of the timepiece, illustratively non-limiting.
  • the watch movement comprises a barrel 1 dedicated to driving the rotary dial and arranged substantially in the center of the movement.
  • the latter furthermore comprises a device for controlling the drive device of the dial, visible on the part to the left of the figure 1 , a device for winding the mainspring, visible on the part to the right of the figure 1 , and a safety device, according to the present invention, whose function will be explained later in connection with the detailed description of the figure 5 .
  • a shaft 2 for transmitting the energy supplied by the barrel to drive the mobile dial in rotation is also visible in the upper right corner of the figure 1 .
  • the barrel 1 comprises a toothed drum 4 secured to the outer end of a barrel spring 5.
  • a winding ratchet (marked with the numeral 6 on the figure 2 ) is integral with the inner end of the mainspring.
  • a spring pawl 8 is arranged to prevent the winding ratchet from rotating in a clockwise direction, and to allow it to rotate in the anticlockwise rotation direction corresponding to the winding of the mainspring, in a conventional manner.
  • a first latch 10 whose operation will be explained later locks the drum 4 to prevent it from rotating in the direction of rotation anti-clockwise.
  • the winding device comprises a rack 12, actuated in translation by a pusher 14 intended to be itself actuated by a user, via an external pusher (not shown).
  • the pusher 14 is pivotally mounted on a bridge, by means of a screw 15.
  • the rack 12 has a toothing 19 arranged in engagement with a first wheel (reference numeral 94 on the figure 5 ) of a conventional unidirectional transmission device.
  • this first wheel transmits its rotational movements to a second wheel of the device only in one direction, here in the direction of rotation anti-clockwise, while it rotates empty in the direction of clockwise rotation.
  • the second wheel meshes with a pinion 21 of an adjacent return whose wheel 22 meshes with the winding ratchet 6.
  • This control device comprises a pusher 24 rotatably mounted on the frame of the watch movement, by means of a screw 25.
  • the return spring 23 has two symmetrical arms and is arranged to act also on the pusher 24. The latter is intended to be actuated by a user, via a second external pusher (not shown).
  • the pusher 24 is integral with a control lever 26 comprising an arm 27 slightly bent and connected to a base 28, by means of a screw 29.
  • the base is pivotally mounted on the frame of the watch movement by a first screw 30, while being guided in its rotational movements by a second screw 32 fixed in the frame but arranged through a short slot 34.
  • the base 28 supports an actuating member 36 fixed on it by screws 38, tightened on screw feet and housed in slots adapted to the actuating member, allowing the latter to move in translation with reference at the base 28, between first and second positions, respectively active and inactive.
  • An elastic member 40 is also provided to apply a force on a finger 41 integral with the actuating member to tend to push it back into its active position, that is to say advanced relative to the base 28.
  • L elastic member 40 is mounted on a screw 42 integral with the base 28 to allow adjustment of the force it applies to the finger 41.
  • the actuating member 36 carries first and second fingers 44, 45 arranged to protrude from the face of the base 28 opposite that on the side of the arm 27. Each of the fingers has an end inclined relative to the direction moving the actuating member with reference to the base 28.
  • a pin 46 integral with the base 28, emerges between the two fingers 44, 45 to define a bearing surface intended to cooperate with an additional elastic member 48, mounted on the frame of the watch movement to apply a restoring force on the lever 26 and push it towards its rest position, that is to say in the direction of the pusher 24.
  • the first and second fingers 44 and 45 are arranged to cooperate respectively with the first latch 10 and a second latch 50.
  • the first latch 10 comprises a board rotatably mounted on a shaft 52 integral with the frame of the watch movement, with the interposition of a helical spring 54 defining a damping function.
  • the board includes a first nose 56 intended to cooperate with the first finger 44, and a second nose 58 intended to cooperate with teeth 60 formed on a ring 62, integral with the drum 4 of the barrel 1, to lock the latter in the direction of rotation anti-clockwise on the view of the figure 1 , as previously stated.
  • the ring 62 has four teeth 60 regularly distributed. Thus, each time the drum is released, it performs a quarter turn. When it is desired that this rotation of the drum takes place at a high speed, the barrel spring 5 then being calibrated in a suitable manner, the shock resulting from the locking of the ring 62 by the cooperation between the spout 58 and a tooth 60 can be violent. Thus, mounting the first latch 10 on the frame via a damper limits the risk of premature wear constituents of the watch movement according to the present invention.
  • the barrel spring 5 has a high torque, it may be necessary to provide the second latch 50 to secure the locking of the drum 4 by the first latch 10, eliminating the risk of inadvertent release of the latter. Due to its arrangement, the second latch 50 prevents the first latch 10 from disengaging from the tooth 60 with which it is engaged without further external action.
  • Soldering the barrel spring drum also prevents some damage that might be experienced by the components of the watch movement during these shocks.
  • the finger 45 of the actuating member 36 is intended to actuate the second latch 50 via a abutment surface 64 formed on the latter. More precisely, when the push-button 24 is actuated by a user, the base 28 of the lever 26 is rotated, as is the actuating member 36 whose fingers 44 and 45 act respectively on the first and second locks, the finger 45 acting on the second lock before the finger 44 acts on the first lock. Thus, the safety of the first latch is neutralized before it is actuated to release the barrel drum.
  • a return spring 66 having three arms acts on the first and second locks, to exert on them forces tending to position them in their active locking position, and on the pawl 8 of the winding ratchet, so known.
  • a first safety device is provided.
  • it has the form of a disengaging member 68 rotatably mounted on the frame of the watch movement, between the barrel drum and the lever 26.
  • the disengaging member 68 comprises a toothed pinion 70 integral with a cam 72, of oblong shape and arranged eccentrically with reference to the axis of rotation of the pinion gear.
  • the latter is dimensioned and toothed so that it turns on itself when the barrel 4 is a quarter turn.
  • the fingers release the two latches 10 and 50 during the rotation of the drum 4, even when the pusher 24 is held down by the user, guaranteeing in all cases the locking of the drum barrel after a predefined stroke, a quarter of a turn in the embodiment shown in a non-limiting manner.
  • the drum When the drum is released, it also drives a first transmission mobile 74 kinematically connected to a mobile, preferably display or contributing to the appearance of the room.
  • the figure 4 represents a simplified perspective view of a preferred embodiment of a watch mechanism that can be driven from the barrel drum whose behavior has just been described.
  • the first transmission mobile 74 is arranged in engagement with a second transmission mobile 76, itself engaged with a pinion 78 integral with the transmission shaft 2.
  • the corresponding timepiece comprises a mobile dial having at least one window or window that can take four different angular positions, with reference to the timepiece box , in order to provide four different appearances to the room and / or present different complications of which only one would be visible at a time.
  • a stabilizing member 86 may be provided, which comprises a roller 88 carried by the end of a spring 90.
  • the roller 88 is arranged to cooperate with a recess 92 formed in the ring 82 to each of the stable positions provided for the mobile dial.
  • the figure 5 represents a simplified perspective view of the part of the watchmaking movement of the figure 1 with construction details relative to the safety device according to the present invention, the implementation of which allows in particular to ensure the maintenance of the indexing of the mobile dial with respect to the elements that it must make visible or conceal, limiting the use of the mainspring to a suitable beach, in terms of load.
  • the energy stored in the barrel is sufficient to allow several successive activations of the dial between two pumping. It may be preferable to provide that the safety device prevents the user from unlocking the barrel drum if the residual energy of its spring is no longer sufficient to guarantee its movement a quarter of a turn, which could lead to a phase shift of the mobile dial, or even make the latter floating angularly.
  • the safety device comprises a differential gear 100, of which a first input wheel 101 has a kinematic connection with the winding ratchet 6 of the barrel, and a second input wheel 102 meshes directly with the drum 4 of the barrel.
  • barrel 1 The first wheel 101 is connected to the winding ratchet 6 via a reference 104 for rotating the first input wheel 101 in the direction required to ensure the proper operation of the differential gear.
  • the differential gear further has an output wheel 106 arranged in engagement with a gear train 108 for driving a first counting wheel 110 carrying a first cam 112, having substantially the shape of a disk portion, and a finger 114 adjacent to the cam.
  • the first counting mobile 110 cooperates with a second counting mobile 116 comprising a toothing (not visible), arranged to move a locking wheel 118 between two extreme positions, and a second cam 120 having at least partially the shape of a Maltese cross with at least two branches 122, here four.
  • the first cam 112 is arranged to cooperate with the free ends of the branches 122 to prevent rotation of the second counting wheel 116.
  • the finger 114 is intended to engage between two branches 122 of the second counting mobile 116 to drive the latter in rotation, in one direction or the other.
  • the toothing of the second counting mobile 116 is arranged in engagement with a rack (numerical reference 124 on the figure 1 ) to ensure the displacement of the locking wheel 118, either towards the first pusher 14 or towards the second pusher 24.
  • the locking device 118 carries first and second arms 126, 128 intended to cooperate respectively with the first and second pushers 14, 24, to ensure locking, via nozzles 130, 131.
  • an action on the first pusher 14 has the effect of raising the spring 5 of the cylinder 1
  • an action on the second pusher 24 has the effect of releasing the drum 4 of the cylinder and thus at least partially unload the spring 5.
  • the first arm 126 of the locking wheel 118 is disposed on the path followed by the spout 130 of the first pusher 14 when the latter is actuated. Therefore, the first pusher 14 is locked in this configuration and can not be operated by a user. Also, this configuration corresponds to the maximum winding of the spring 5 of the cylinder 1 and the user can not reassemble more.
  • cam 112 also defines a stop for the first counting mobile 110 via the finger 114.
  • the user wishes to turn the mobile support 84 by a quarter of a turn, he actuates the second pusher 24. In doing so, he releases the drum 4 which rotates a quarter of a turn and causes the rotating the second input wheel 102 of the differential gear 100.
  • the rotation of the second wheel 102 causes a rotation of the first counting wheel 110 in the anti-clockwise direction of rotation.
  • the angle of rotation of the first counting mobile 110 is a function of the gear ratio introduced in particular by the gear train 108.
  • the first pusher 14 can again be operated once to raise the mainspring before being locked again.
  • the second pusher 24 can still be actuated several times before being locked by the second arm 128 of the locking wheel 118, when it is positioned in the path of the spout 131. More specifically, in the example illustrated here without limitation, the second pusher 24 can still be actuated three times before being locked.
  • the spring 5 it is possible for the spring 5 to be calibrated in such a way that it makes it possible to actuate the support mobile 84 84 times. In this case, the first counting mobile 110 would only be a half-turn each time the actuator is actuated. second pusher 24 instead of a complete turn.
  • the arms 126, 128 are mounted on the locking wheel 118 with a slight play in rotation, springs 132 being provided to ensure their good cooperation with the pushers. More particularly, this construction makes it possible to guarantee a good positioning of the arms in their locking position. Indeed, when the mobile locking is placed in one or other of the locking positions, the push 14 or 24 corresponding is still actuated and is on the path of its locking arm 126 or 128. In this intermediate phase, the arm pivots by deforming its spring 132 until the pusher is released and allows the arm to be positioned in its locking position, under the effect of the spring.
  • the arms could for example be carried by a support connected via an elastic member to a base of the locking wheel, driven from the output of the differential gear, so that all the support remains offset from the base in the intermediate phase, before taking its rest position when the pusher is released.
  • the barrel can be used to ensure the operation of a striking mechanism as an alternative to a mobile dial.
  • the forms specifically illustrated and described for the various constituents are not limiting.
  • the disengaging member acts only indirectly on the actuating member.
  • the teeth 60 cooperating with the first latch are not evenly distributed around the ring 62.
  • the safety device could be associated with a power reserve indication device without departing from the scope of the invention.
  • This indication device could be driven from any mobile located between the output of the differential gear, or alternatively, by the locking mobile itself, which would in this case to display the value of the power reserve opposite a linear scale.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
EP11159128A 2011-03-22 2011-03-22 Sicherheitsvorrichtung für Federgehäuse eines Uhrwerks Withdrawn EP2503403A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11159128A EP2503403A1 (de) 2011-03-22 2011-03-22 Sicherheitsvorrichtung für Federgehäuse eines Uhrwerks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11159128A EP2503403A1 (de) 2011-03-22 2011-03-22 Sicherheitsvorrichtung für Federgehäuse eines Uhrwerks

Publications (1)

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EP2503403A1 true EP2503403A1 (de) 2012-09-26

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EP11159128A Withdrawn EP2503403A1 (de) 2011-03-22 2011-03-22 Sicherheitsvorrichtung für Federgehäuse eines Uhrwerks

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH319289A (fr) * 1954-07-10 1957-02-15 Reymond Paul E Remontoir automatique pour pièce d'horlogerie
CH333401A (fr) * 1955-10-28 1958-10-15 E Reymond Paul Remontoir automatique pour pièce d'horlogerie
CH337786A (fr) * 1957-02-09 1959-04-15 Gruen Watch Mfg Co S A Montre à remontage automatique
EP1840680B1 (de) 2006-03-29 2008-06-25 De Grisogono S.A. Uhrmodul, das ein verstellbares drehbares Zifferblatt auf einem Uhrwerk umfasst

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH319289A (fr) * 1954-07-10 1957-02-15 Reymond Paul E Remontoir automatique pour pièce d'horlogerie
FR1146549A (fr) * 1954-07-10 1957-11-13 Remontoir automatique pour pièce d'horlogerie
CH333401A (fr) * 1955-10-28 1958-10-15 E Reymond Paul Remontoir automatique pour pièce d'horlogerie
CH337786A (fr) * 1957-02-09 1959-04-15 Gruen Watch Mfg Co S A Montre à remontage automatique
EP1840680B1 (de) 2006-03-29 2008-06-25 De Grisogono S.A. Uhrmodul, das ein verstellbares drehbares Zifferblatt auf einem Uhrwerk umfasst

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
G.-A. BERNER: "Dictionnaire", SOCIÉTÉ DU JOURNAL LA SUISSE HORLOGÈRE SA

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