EP1522001B1 - Hemmung - Google Patents

Hemmung Download PDF

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Publication number
EP1522001B1
EP1522001B1 EP03732164A EP03732164A EP1522001B1 EP 1522001 B1 EP1522001 B1 EP 1522001B1 EP 03732164 A EP03732164 A EP 03732164A EP 03732164 A EP03732164 A EP 03732164A EP 1522001 B1 EP1522001 B1 EP 1522001B1
Authority
EP
European Patent Office
Prior art keywords
axle
torque
locking
escapement device
pinion
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.)
Expired - Lifetime
Application number
EP03732164A
Other languages
English (en)
French (fr)
Other versions
EP1522001A2 (de
Inventor
Xuan Mai Tu
Michel Schwab
Jean-Pierre Musy
François DEVAUD
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.)
Detra SA
Patek Philippe SA Geneve
Original Assignee
Detra SA
Patek Philippe SA Geneve
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 Detra SA, Patek Philippe SA Geneve filed Critical Detra SA
Publication of EP1522001A2 publication Critical patent/EP1522001A2/de
Application granted granted Critical
Publication of EP1522001B1 publication Critical patent/EP1522001B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G04B15/00—Escapements
    • 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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel

Definitions

  • the present invention relates to an exhaust device, in particular an exhaust device for a clockwork movement. It also relates to a watch movement provided with such a device, as well as a timepiece equipped with a watch movement provided with such a device.
  • the exhaust device constitutes a masterpiece being charged on the one hand to deliver the energy necessary for the maintenance of the oscillation movement of the mechanical oscillator , balance and hairspring, and secondly to transmit the oscillation frequency of the oscillator to the gear train causing the time display.
  • WO 01/77759 describes an improved exhaust with respect to the known exhaust faults mentioned above.
  • a first embodiment described with reference to Figure 2 comprises a rotary escapement, relatively easy to manufacture, but remaining sensitive to the phenomenon of galloping, that is to say being likely to take the advance in case of shocks in one or more directions parallel to the plane of the wheels.
  • the same application describes a second embodiment of an exhaust with reference to FIG. 12, this exhaust comprising more than one blocking point per cycle becoming insensitive to galloping. By cons, being oscillating rather than rotary type, its construction is more complicated.
  • An object of the invention is therefore to provide an improved exhaust relative to known exhaust, that is to say, free of the known defects mentioned.
  • Another object of the invention is to provide a simple exhaust manufacturing and escaping the phenomenon of galloping.
  • Another object of the invention is to provide an exhaust easy to lubricate.
  • Yet another object of the invention is to propose a watch movement provided with such an escapement.
  • Yet another object of the invention is to propose a timepiece equipped with a clockwork movement provided with such an escapement.
  • FIG. 1 An embodiment of the exhaust assembly according to the invention is shown in plan in Figure 1 and in section along the broken line II-II and showing several planes in elevation in Figure 2.
  • the exhaust comprises here: an exhaust shaft 1 on which are mounted a toothed wheel 10 and a pulse wheel 11; a locking shaft 2 on which are mounted: a locking pinion 20, a locking piece 21 and a first piece of form 22; a shaft producing an electromagnetic torque 3 on which are mounted: a rotor 33 rotating inside a stator 34, a second pinion 30 and a second piece of shape 32.
  • the figures also show, schematically, a rocker plate 44, pivoting about an axis 4 and carrying a pulse lever 41 and a release lever 42 the other components of the balance are known and are therefore neither represented nor described more precisely here.
  • Figures 3 to 11 individually show each of the components mentioned above. It is understood that for many of these components, the shapes shown here are only one possible embodiment shown by way of example. In fact, to obtain a certain function, as will be seen below, two or more pieces intended to cooperate have their paired forms defined by their function; we could get pairs or groups of pieces of different shapes for the same function or an equivalent function.
  • Figure 3 in particular shows the toothed wheel 10 with a module of 49 teeth, but having 7 gaps each of a tooth regularly distributed over the perimeter of the wheel.
  • the gearwheel 10 comprises 42 teeth.
  • the same remarks apply to the identical pinions 20 and 30, visible in FIGS. 5 and 9, each of these pinions having a module of 14 teeth and comprising 2 gaps of each one tooth, opposite on a diameter, thus reducing the number of teeth at 12 for each pinion.
  • the operation of this wheel and these pinions and their gaps will be explained below.
  • FIG. 12 shows the torque transmitted by the exhaust shaft to the time display device (not shown) of the watch movement as a function of the angle of rotation of the rotor 33, this torque being transmitted directly or via one or several intermediate wheels.
  • This pair consists of a first component formed of a constant torque, coming from the mechanical energy storage device of the watch movement, this energy storage device not being represented in the figures and a second component periodically varying, for example sinusoidally as in the example shown, provided by the rotor 33 and transmitted via the pinions 30 and 20 to the toothed wheel 10 and finally to the shaft 1.
  • this pair comprises two stable positions S1 and S2 over a period, these two stable positions corresponding to two locking points as described below.
  • These table positions are defined by a zero crossing of the torque curve, with a negative slope of said curve.
  • the opposite points, I1 and I2 each corresponding to a release point as described below are defined by zero crossing points of the torque curve, with a positive slope of said curve.
  • FIG. 13 there is a first stage of operation of the exhaust, said exhaust being at the first blocking point S1 of the diagram of FIG. 12.
  • the impulse wheel 11, which under the effect of the constant torque applied to the axis 1 by the energy storage device tends to turn in the counterclockwise direction is blocked since a tip 110 of said wheel bears against a face 210 of the locking piece 21.
  • the elements carried by the 3 axis are stopped as the toothed wheel is blocked by the toothed wheel 20.
  • the rocker 44 is rotating in a counterclockwise direction, as shown by the arrow.
  • the release lever 42 just hits a portion 220 of the first shaped part 22 in order to rotate it with the axis 2 in a clockwise direction, as can be seen in FIG.
  • This pivoting movement of the spindle 2 firstly causes the locking piece 21 to pivot on which the tooth 110 of the impulse wheel 11 remains supported and thus pivots slightly about its axis 1.
  • the pivoting drive movement of the axis 1 is effected by the sliding of the tip 110 of the impulse wheel 11 along the profile of the locking piece 21 and not by the driving of the wheel 10 by the 20.
  • the toothing of the pinion 20 is just opposite a gap in the toothing of the wheel 10, these two elements being thus disengaged during this period. movement.
  • This pivoting of the axis 2 continues until a portion 221 of the shaped part 22 comes into contact with a bearing surface 321 of the shaped part 32 fixed to the axis 3, as shown in FIG. FIG. 16.
  • This second blocking position corresponds to the point S2 of the curve of FIG. 12.
  • the axis 2 and the axis 3 are now locked by the two parts in contact as mentioned above, whereas the axis 1 is blocked since the toothing of the wheel 10 is now geared to that of the pinion 20, which is itself locked.
  • the rocker 44 continues its course by pivoting counterclockwise to its cusp and then returns clockwise as shown in Figure 17, this movement continues until the release lever 42 comes to hit a horn 320 of the shaped part 32 mounted on the axis 3, as shown in FIG.
  • FIG. 19 This striking movement unlocks the system, which then leaves the locking point S2 of FIG. 12.
  • This situation is represented in FIG. 19 on which it can be seen that the shaped part 32 is pivotally driven by the release lever 42, making pivoting the axis 3 and the rotor 33, as well as the shaped part 22 whose portion 221 slides along the periphery of the bearing surface 321, rotating the axis 2. It is seen that this pivoting of the axis 2 is not controlled by the teeth of the pinions 20 and 30 since the teeth of the pinion 20 are opposite a gap in the toothing of the pinion 30. On the other hand, the pinion 20 meshing with the toothed wheel 10 of the pinion 20 1 axis allows the pivoting of the latter.
  • the device described above having two stable positions S1 and S2 blocking cycle, separated by an unlocking position I1, a mechanical shock imposed on the timepiece capable of making more than one turn the balance spring, respectively capable of controlling two or more successive releases in a conventional exhaust, can not generate a galloping phenomenon, respectively can not cause an undesired advance of the time display of the device according to the invention, since in this case the phase of unlocking would not have occurred.
  • Such an exhaust system is perfectly adapted to be integrated with a watch movement of a timepiece, in particular a wristwatch.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
  • Electric Clocks (AREA)

Claims (9)

  1. Hemmung eines Uhrwerks, bestehend aus:
    einer ersten Achse (3), die einem ersten periodischen mechanischen Moment untergeordnet ist,
    einer zweiten Achse (1), die einerseits einem zweiten und im Wesentlichen konstanten mechanischen Moment untergeordnet und andererseits geeignet ist, dem Uhrwerk ein drittes Moment zu übertragen, das aus der Summe des ersten und des zweiten Moments gebildet wird,
    zwei Hemmmitteln (11,21; 32,22), die geeignet sind, die Übertragung des dritten Moments auf die erste Achse zu hemmen,
    dadurch gekennzeichnet, dass
    das erste Hemmmittel aus einem Impulsrad (11) gebildet wird, das auf der zweiten Achse (1) gelagert wird, bei der jeder Zahn (110, 111, ...) geeignet ist, sich nacheinander auf eine Hemmseite (210, 211) eines Hemmteils(22) zu stützen, das auf einer dritten Achse (2) gelagert wird, während das zweite Hemmmittel aus einem ersten Formteil (22) gebildet wird, das auf der dritten Achse (2) gelagert wird, bei der jeder Zahn (221) geeignet ist, sich nacheinander auf eine Hemmseite (321) eines zweiten Formteils (32) zu stützen, das auf der ersten Achse (3) gelagert wird.
  2. Hemmung nach Anspruch 1, dadurch gekennzeichnet, dass die Übertragung des ersten periodischen Moments von der ersten Achse (3) auf die zweite Achse (1) über einen ersten Trieb (30) erfolgt, der auf der ersten Achse (3) angeordnet ist und in einen zweiten Trieb (20) greift, der auf der dritten Achse (2) angeordnet ist und auf ein auf der zweiten Achse (1) angeordnetes Zahnrad (10) greift.
  3. Hemmung nach Anspruch 2, dadurch gekennzeichnet, dass der erste Trieb (30), der zweite Trieb (20) und das Zahnrad (10) jeweils eine Zahnlücke aufweisen, über die eine Entkopplung der Momentübertragung während der Hemmphasen dieser Hemmung gewährleistet wird.
  4. Hemmung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der erste periodische mechanische Moment durch einen in einem Leitrad (34) angeordneten Läufer (33) hergestellt wird, wobei der Läufer geeignet ist, diesen ersten periodischen mechanischen Moment auf die erste Achse (3) zu übertragen.
  5. Hemmung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Hemmung für jede Umdrehung der ersten Achse (3) vier Hemmpunkte (S1, S2, S'1, S'2) aufweist.
  6. Hemmung nach Anspruch 5, dadurch gekennzeichnet, dass die Hemmung zwischen jedem Hemmpunkt (S1, S2, S'1, S'2) einen Enthemmpunkt (I1, I2, I'1, I'2) aufweist.
  7. Hemmung nach Anspruch 6, dadurch gekennzeichnet, dass eine erste Enthemmung durch den Anschlag eines Freigabehebe!s (42) erlangt wird, der auf der Unruh mit Spiralfeder (44) gegen einen Abschnitt (220) des ersten Formteils gelagert wird, während eine zweite Enthemmung durch den Anschlag dieses Freigabehebels (42) gegen einen Abschnitt (320) des zweiten Formteils erlangt wird.
  8. Uhrwerk mit Hemmung nach einem der vorstehenden Ansprüche.
  9. Uhrenteil mit Uhrwerk nach Anspruch 8.
EP03732164A 2002-07-11 2003-07-07 Hemmung Expired - Lifetime EP1522001B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH12202002 2002-07-11
CH122002 2002-07-11
PCT/CH2003/000450 WO2004008258A2 (fr) 2002-07-11 2003-07-07 Dispositif d'echappement

Publications (2)

Publication Number Publication Date
EP1522001A2 EP1522001A2 (de) 2005-04-13
EP1522001B1 true EP1522001B1 (de) 2006-08-09

Family

ID=30005591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03732164A Expired - Lifetime EP1522001B1 (de) 2002-07-11 2003-07-07 Hemmung

Country Status (4)

Country Link
EP (1) EP1522001B1 (de)
AU (1) AU2003238329A1 (de)
DE (1) DE60307471D1 (de)
WO (1) WO2004008258A2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2450755A1 (de) * 2010-11-04 2012-05-09 Nivarox-FAR S.A. Synchronhemmung für Uhrwerk
US8556499B2 (en) 2010-11-04 2013-10-15 Nivarox-Far S.A. Anti-trip device for an escape mechanism
US8602637B2 (en) 2010-11-04 2013-12-10 Nivarox-Far S.A. Anti-trip device for an escape mechanism

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH707790B1 (fr) 2013-03-26 2017-12-15 Montres Breguet Sa Arbre de mobile pivotant d'horlogerie magnétiquement inhomogène.
WO2020007619A2 (fr) 2018-07-02 2020-01-09 Complitime Sa Mecanisme d'echappement horloger

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE850279C (de) * 1949-02-22 1952-09-22 Fritz Uebelacker Gleitscheibenhemmung fuer Unruhuhren
EP0018796B1 (de) * 1979-04-30 1984-11-07 George Daniels Uhren, Pendeluhren, Chronometer und Hemmungen dafür
DE69909236T2 (de) * 1999-04-12 2004-04-22 Omega S.A. Koaxiale Ankerhemmung
WO2001077759A1 (fr) 2000-04-11 2001-10-18 Detra Sa Dispositif d'echappement pour piece d'horlogerie

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2450755A1 (de) * 2010-11-04 2012-05-09 Nivarox-FAR S.A. Synchronhemmung für Uhrwerk
US8439556B2 (en) 2010-11-04 2013-05-14 Nivarox-Far S.A. Synchronous escapement for a timepiece mechanism
US8556499B2 (en) 2010-11-04 2013-10-15 Nivarox-Far S.A. Anti-trip device for an escape mechanism
US8602637B2 (en) 2010-11-04 2013-12-10 Nivarox-Far S.A. Anti-trip device for an escape mechanism

Also Published As

Publication number Publication date
AU2003238329A8 (en) 2004-02-02
WO2004008258A2 (fr) 2004-01-22
AU2003238329A1 (en) 2004-02-02
DE60307471D1 (de) 2006-09-21
WO2004008258A3 (fr) 2004-07-29
EP1522001A2 (de) 2005-04-13

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