WO2020201918A1 - Horloge à fréquence réglable - Google Patents

Horloge à fréquence réglable Download PDF

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Publication number
WO2020201918A1
WO2020201918A1 PCT/IB2020/052792 IB2020052792W WO2020201918A1 WO 2020201918 A1 WO2020201918 A1 WO 2020201918A1 IB 2020052792 W IB2020052792 W IB 2020052792W WO 2020201918 A1 WO2020201918 A1 WO 2020201918A1
Authority
WO
WIPO (PCT)
Prior art keywords
clock
wheel
frequency
balance
escapement
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.)
Ceased
Application number
PCT/IB2020/052792
Other languages
English (en)
Inventor
Luciano SASSO
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.)
La Vallee SRL
Original Assignee
La Vallee SRL
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 La Vallee SRL filed Critical La Vallee SRL
Publication of WO2020201918A1 publication Critical patent/WO2020201918A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • G04B15/06—Free escapements
    • G04B15/08—Lever escapements
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator

Definitions

  • the present invention in a more general aspect thereof, concerns the advancing frequency of the mechanisms of clocks.
  • the invention preferably concerns mechanical clocks, in other words those in which the mobile indicator elements like the hands, the discs or the dials or other, are driven by mechanisms that comprise an escapement system.
  • the escapement mechanisms that are used to advance the hands and the other mobile parts comprise a series of gears and of mechanical members that transform the drive torque supplied usually by a spring, so as to obtain a desired advancing speed: for example, the seconds hand will typically perform one complete turn in a minute, whereas the minute hand will perform one turn in an hour and so on.
  • this advancing system is regulated by the oscillation frequency of a component called balance wheel, which under the elastic contrast action of a spring carries out alternate rotations with a predetermined frequency and/or amplitude.
  • the ticking produced by mechanical clocks is closely linked to the oscillation frequency of the balance wheel.
  • anchor another component that, as a result of its geometry and the constraints placed on it, moves alternately into two extreme positions.
  • anchor stops and releases the teeth of a wheel called“escapement wheel” that is moved and pushed by the torque exerted by the load spring through a train of multiplying gears.
  • the striking of such components produces a sound of constant rhythm that is what is commonly identified as“ticking” of the clock.
  • a technical problem forming the basis of the invention is to provide a clock with structural and operating characteristics such as to reduce or in any case limit the drawbacks due to the sound associated with the escapement operating mechanism.
  • the Applicant has found that depending on the people and/or the environments in which the clock is located, there are some frequencies that can lessen the annoyance or in any case the negative effects of the sound associated with it.
  • a clock in which the oscillation frequency of its escapement mechanism can be set according to requirements.
  • such a frequency is different from the high frequencies of known clocks and in any case different from that necessary to advance the second or minute hands, nevertheless ensuring the advancing speed of the latter, in other words one turn per minute or one turn per hour.
  • the mechanism of figure 1 is of the type intended for wrist watches or table clocks, i.e. with a horizontal quadrant; however, those skilled in the art will be able to make the necessary variations in the case of wall clocks, possibly even pendulum clocks.
  • the device 1 comprises an anchor mechanism 4 and balance wheel 5 that oscillates in contrast to the elastic action of a coil spring 6; the anchor 4 engages with a sawtooth wheel 7 of the escapement, which is set in motion by a gear train 7, 8, 9, 10, 11, 12 13, 14, 29 in cascade that receive the drive torque from a spring 30.
  • the latter is loaded manually by a crown 25 and a drum gear 26, 27, 28.
  • the frequency at which the balance wheel 5 is made to oscillate by means of the coil spring 6 is a constructive choice that is made at the design stage according to the teaching of the invention: such a frequency is preferably selected as a function of the user and/or the environment in which the clock in which the device 1 is mounted is arranged.
  • frequencies corresponding to the heartbeat of the user there are the frequencies corresponding to the heartbeat of the user, particularly in rest conditions; typically, it thus concerns frequencies below 1 Hz and more preferably also below 0,5 Hz.
  • Fig. 1 shows the escapement device of a mechanical clock (in the example a table clock or a wrist watch), where the clicks of the anchor 4 release the teeth of the escapement wheel 7 one at a time, said wheel 7 being set in motion by the entire gear train 7, 8, 9, 10, 11, 12 13, 14, 29, which moves the minute hand 3, hour hand 2 and, consequently, all of the other indications possibly present on the clock face 35, in this case the seconds hand 15.
  • the frequency of the sound produced by the contact between the anchor 4 and the teeth of the escapement wheel 7 is preset as a function of parameters outside of the clock, such as the heart rate of the user, the environment in which the clock is located or other.
  • a balance should be provided between the first gear train 8, 9, 10, 11, 12 13, 14, 29 linking the aforesaid oscillating system to the load or drive spring 30, and the second gear train 16, 17, 18, 20, 29 linking the hour and minute hands 2, 3 to the load spring 30.
  • the balance should involve at least one among the following parameters: distribution of the power between the first and second gear trains, the moment of inertia of the gear trains and of possible elements associated thereto (such as balance wheel 5, shafts 18 or 32, pins and others), as well as further parameters like the elastic constant and/or number of turns of the coil spring 6, the diameter of escapement wheel 7, the transmission ratios of the gears, etc.
  • the balance is promoted by the fact that the gears 16, 17, 18, 20, 29 of the second train that drives the hands 2, 3, operate along the main axis i.e. the vertical centre shaft 20.
  • the low frequency values of less than 1 Hz also provide for reducing the wear of the oscillating mechanism and in particular the anchor 4 and the escapement wheel 7.
  • the teaching of the invention also extends to table and wall clocks, so that in such circumstances it will be possible to have variants with respect to what is shown in the figure, which concerns a wrist watch.
  • the loading crown 25 could be absent or in any case be different; the same applies to some of the gears 8, 9, 10, 11, 12 13, 14, 29 or 16, 17, 18, 20, 29 that make it possible to obtain the desired gear ratio for a given oscillation frequency of the balance wheel 5.

Landscapes

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

Abstract

L'invention concerne un dispositif d'échappement pour horloges, dans lequel le bruit du tic-tac produit par un mécanisme dans lequel une roue d'équilibrage (5) oscille par opposition à l'action élastique d'un ressort (6) et est associée à un ancrage (4), a une fréquence prédéfinie en fonction de paramètres à l'extérieur de l'horloge, tel que la fréquence cardiaque d'un utilisateur, l'environnement dans lequel est située l'horloge ou autres.
PCT/IB2020/052792 2019-03-29 2020-03-25 Horloge à fréquence réglable Ceased WO2020201918A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19166419.2 2019-03-29
EP19166419.2A EP3715960A1 (fr) 2019-03-29 2019-03-29 Fréquence d'horloge reglable

Publications (1)

Publication Number Publication Date
WO2020201918A1 true WO2020201918A1 (fr) 2020-10-08

Family

ID=66625728

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2020/052792 Ceased WO2020201918A1 (fr) 2019-03-29 2020-03-25 Horloge à fréquence réglable

Country Status (2)

Country Link
EP (1) EP3715960A1 (fr)
WO (1) WO2020201918A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020132856B3 (de) 2020-12-09 2022-04-21 Lange Uhren Gmbh Ortsfest angeordnete Uhr

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2570870A1 (fr) * 2011-09-15 2013-03-20 The Swatch Group Research and Development Ltd. Pièce d'horlogerie à oscillateurs couplés de manière permanente

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2570870A1 (fr) * 2011-09-15 2013-03-20 The Swatch Group Research and Development Ltd. Pièce d'horlogerie à oscillateurs couplés de manière permanente

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020132856B3 (de) 2020-12-09 2022-04-21 Lange Uhren Gmbh Ortsfest angeordnete Uhr

Also Published As

Publication number Publication date
EP3715960A1 (fr) 2020-09-30

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