EP0681228B1 - Kopplungsvorrichtung zwischen einer mechanischen Energiequelle and einem elektrischen Generator in einer Zeitmessvorrichtung - Google Patents

Kopplungsvorrichtung zwischen einer mechanischen Energiequelle and einem elektrischen Generator in einer Zeitmessvorrichtung Download PDF

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Publication number
EP0681228B1
EP0681228B1 EP95106408A EP95106408A EP0681228B1 EP 0681228 B1 EP0681228 B1 EP 0681228B1 EP 95106408 A EP95106408 A EP 95106408A EP 95106408 A EP95106408 A EP 95106408A EP 0681228 B1 EP0681228 B1 EP 0681228B1
Authority
EP
European Patent Office
Prior art keywords
turns
spring
tube
generator
cylindrical element
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
EP95106408A
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English (en)
French (fr)
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EP0681228A1 (de
Inventor
Jean-Luc Béguin
Pierre Haefeli
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.)
ETA SA Manufacture Horlogere Suisse
Ebauchesfabrik ETA AG
Original Assignee
Ebauchesfabrik ETA AG
Eta SA Fabriques dEbauches
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Filing date
Publication date
Application filed by Ebauchesfabrik ETA AG, Eta SA Fabriques dEbauches filed Critical Ebauchesfabrik ETA AG
Publication of EP0681228A1 publication Critical patent/EP0681228A1/de
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Publication of EP0681228B1 publication Critical patent/EP0681228B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces

Definitions

  • the present invention relates to a device for coupling between a mechanical energy source and a generator of electrical energy in a room timepiece comprising a shaft driven by said mechanical power source and a cylindrical element mounted fixedly and coaxially on this tree.
  • Such a coupling device is known from the articles HOROLOGICAL JOURNAL, vol. 132, no. 4, October 1989 UPTON GB, pages 124-125, XP 000054948 AG RANDALL 'Technical Report - The Jean d'Eve Samara', UHREN, JUWELEN, SCHMUCK, no.
  • the latter comprises an AC generator, a rechargeable battery and a charging system interposed between the generator and the battery, the generator comprising a multipolar rotor carrying permanent magnets and a stator provided with windings delivering the AC current.
  • An eccentric mass drives the rotor.
  • the rotor, stator and ground are mounted coaxially.
  • the coupling between the mass, source of mechanical energy, and the rotor of the electric power generator is carried out, at least in one embodiment described, by a spiral spring, one of the ends of which is attached to a cylindrical element making part of the pivot shaft of the eccentric mass, the other end of which is attached to a cage carrying the generator rotor.
  • the rotor In the idle state, the rotor is magnetically retained by the stator, which constitutes a certain positioning torque.
  • the mass When the mass begins to rotate, it tends or winds the spiral spring around the cylindrical element until the energy accumulated by the spring exceeds the positioning energy of the rotor relative to the stator. From this moment, the rotor is released and rotated at high speed until the kinetic energy stored by the spring is used up, the generator then producing a high electromotive force to charge the battery.
  • the present invention is characterized in that said element cylindrical is surmounted by a tube mounted to turn freely around said tree and arranged to train said generator, a helical spring being adjusted to greasy friction on the cylindrical element and on the tube by its first and last turns respectively, a space being provided between said tube and element cylindrical and the central turns of said spring.
  • the coupling device 1 fits between a mechanical energy source 2 and a generator of electrical energy 3 as seen on the figure 1.
  • the energy source mechanical 2 is an oscillating eccentric mass of the type of that fitted to mechanical winding watches automatic.
  • the generator electrical energy 3 consists of a rotor magnetized 33 carried by a shaft 27. By turning, the rotor produces variations in magnetic flux on a winding 34 disposed in a casing 40 for flow return.
  • the housing is fixed in a plate 32 of the watch.
  • the stream AC AC collected across the coil 34 is intended to charge an accumulator of the type gold cap by example, and this via a conventional rectifier. In turn the accumulator will power a quartz oscillator, a frequency divider and stepper motor like this is well known for electronic watches.
  • the oscillating mass is animated by a movement bidirectional to make it unidirectional for reassemble a barrel spring.
  • this mass oscillating pivots in the center of the movement and coaxially to the switch and is supported by a ball bearing, part 41 is shown in FIG. 1.
  • a wheel 30 whose teeth are engaged with a first ratchet wheel 13.
  • the wheel 30 also meshes on a second ratchet wheel 14 as sketched dashed line in Figure 2.
  • the first ratchet wheel 13 (see Figures 1 and 2) cooperates with a first disc trainer 50 chased on a tree 4 driving the coupling device 1 according to the invention.
  • the second ratchet wheel 14 (see dotted representation of the Figure 2) cooperates with a second driving disc 51 in taken directly from the first disk 50.
  • a second driving disc 51 in taken directly from the first disk 50.
  • shaft 4 always rotate in the same direction, whatever the direction of rotation of mass 2.
  • the generator 3 is driven by a large diameter wheel 15.
  • This wheel is integral with tube 6.
  • the teeth 26 of this wheel 15 are engaged with a pinion 25 carried by the shaft 27 of generator 3.
  • the shaft 4 of the coupling device pivots between the stage 32 of the movement and a bridge 31 carried by this movement.
  • the operation of the coupling is as follows:
  • shaft 4 When shaft 4 turns (unidirectionally as mentioned above), it drives the first turns 8 of spring 7, tight with greasy friction around the cylindrical element 5 and wound in a direction which has tendency to further tighten this friction, to turn with him.
  • the last turns 9 of the spring 7 coiled with greasy friction on this tube tighten still around him, which has the consequence of straining the spring 7 in its central turns 11 which contract and decrease in diameter to thus accumulate energy developed by the mechanical energy source from the oscillating mass.
  • the couple stored by the spring 7 exceeds the positioning torque of the generator 3, the latter starts to rotate at high speed, driven as it is by the wheel 15 secured to the tube 6.
  • the generator will run until it runs out potential energy stored in spring 7, then will continue its race for a few more laps because, upon exhaustion, the spring 7 tends to slip the location of the first and last turns 8 and 9, which allows generator 3 to further release energy kinetics acquired by its rotor 33.
  • This device shows that not only it is shock free (spring 7 is not fixed anywhere) thereby imparting to it a long service life, but yet he is able to restore the energy that has been conferred almost entirely, since yields around 98% could be measured. It’s actually a very advantageous device allowing on the one hand the engagement and disengagement between an energy source mechanical and an electric power generator and on the other hand the almost complete restitution of energy stored by the mechanical energy source.
  • the proposed device also makes it possible to transform the relatively slow speed of the energy source mechanical (around 240 rpm) at a very high speed fast (around 15,000 rpm) which is favorable the overall performance of the generator.
  • the high speed multiplication generated by the ratio between the number of teeth of the pinion 25 of the shaft of the generator and the number of teeth 26 of the big wheel uniting with the device of the invention contributes significantly at this high speed.
  • the generator is still driven at the same speed, since it is only released when its positioning torque is less than the torque mechanical stored by the spring. This has the advantage to ensure a constant output, the generator restoring always the same amount of energy.
  • the helical spring has central turns 11 whose diameter is larger large than the diameter of the first and last turns 8 and 9, these first and last turns presenting a substantially equal diameter. Therefore the diameter outside 16 of the tube 6 and the outside diameter 18 of the cylindrical element 5 are also substantially the same. This this way we simplify the way of achieving the spring 7.
  • the tube 6 is stepped according to at least two different diameters, the first 16 receiving the last turns 9 of the spring 7 and the second 17, smaller penetrating at least partially inside the cylindrical element 5 shaped into a shape cup, the outside diameter 18 of said cup receiving the first turns 8 of the spring 7.
  • a spring 7 of constant diameter from top to bottom since a space 10 would always be provided between the lower part 45 of the tube 6 and the central turns 11 of the spring 7.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Claims (5)

  1. Kupplungsvorrichtung (1) zwischen einer mechanischen Energiequelle (2) und einem Elektroenergieerzeuger (3) in einem Zeitmeßgerät, umfassend eine von der mechanischen Energiequelle angetriebene Welle (4) und ein fest und koaxial auf der Welle montiertes zylindrisches Element (5), dadurch gekennzeichnet, daß das zylindrische Element (5) von einem Rohr (6) überlagert ist, das frei drehbar auf der Welle (4) montiert und ausgebildet ist, um den Elektroenergieerzeuger anzutreiben, wobei eine Schraubenfeder (7) mit trockener Reibung auf dem zylindrischen Element und auf dem Rohr mit ihren ersten (8) bzw. letzten (9) Windungen sitzt und wobei ein Zwischenraum (10) zwischen dem Rohr und dem zylindrischen Element und den zentralen Windungen (11) der Feder vorgesehen ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Schraubenfeder (7) zentrale Windungen (11) aufweist, deren Durchmesser größer ist als der der ersten (8) und letzten (9) Windungen, welche ersten und letzten Windungen im wesentlichen gleichen Durchmesser aufweisen.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die mechanische Energiequelle eine die Welle (4) nur in einer Richtung mittels eines Klinkenräder (13,14) umfassenden Systems (12) antreibende oszillierende Masse (2) ist.
  4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Elektroenergieerzeuger (3) von einem mit dem Rohr (6) verbundenen Rad (15) großen Durchmessers angetrieben ist.
  5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Rohr (6) mit mindestens zwei unterschiedlichen Durchmessern abgestuft ist, von denen der erste (16) die letzten Windungen (9) der Feder (7) aufnimmt und der zweite (17), kleinere mindestens teilweise in das Innere des zylindrischen Elements (5) ragt, das kuppelförmig ausgebildet ist, wobei der Außendurchmesser (18) der Kuppel die ersten Windungen (8) der Feder (7) aufnimmt.
EP95106408A 1994-05-04 1995-04-28 Kopplungsvorrichtung zwischen einer mechanischen Energiequelle and einem elektrischen Generator in einer Zeitmessvorrichtung Expired - Lifetime EP0681228B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01398/94A CH686474B5 (fr) 1994-05-04 1994-05-04 Dispositif de couplage entre une source d'énergie mécanique et une génératrice électrique dans une pièce d'horlogerie.
CH1398/94 1994-05-04

Publications (2)

Publication Number Publication Date
EP0681228A1 EP0681228A1 (de) 1995-11-08
EP0681228B1 true EP0681228B1 (de) 1998-07-08

Family

ID=4209498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95106408A Expired - Lifetime EP0681228B1 (de) 1994-05-04 1995-04-28 Kopplungsvorrichtung zwischen einer mechanischen Energiequelle and einem elektrischen Generator in einer Zeitmessvorrichtung

Country Status (9)

Country Link
US (1) US5532982A (de)
EP (1) EP0681228B1 (de)
JP (1) JP3607359B2 (de)
KR (1) KR100321491B1 (de)
CN (1) CN1088859C (de)
CH (1) CH686474B5 (de)
DE (1) DE69503313T2 (de)
HK (1) HK1012445A1 (de)
TW (1) TW285724B (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997010534A1 (fr) * 1995-09-13 1997-03-20 Citizen Watch Co., Ltd. Petit appareil electronique equipe d'un generateur
CN1132071C (zh) * 1997-09-26 2003-12-24 精工爱普生株式会社 电子控制式机械钟表
US6288519B1 (en) * 1998-12-22 2001-09-11 Ericsson Inc. Charging and vibrating method using movable magnets for a product using rechargeable batteries
EP1085383B1 (de) * 1999-09-17 2009-01-21 ETA SA Manufacture Horlogère Suisse Stossfeste Vorrichtung für einen durch eine Schwungmasse angetriebenen Generator
DE60042597D1 (de) * 2000-12-07 2009-09-03 Eta Sa Mft Horlogere Suisse Stossfeste Übertragungsmittel zum Antrieb eines Generators durch eine Schwungmasse, insbesondere in einer Uhr
NL1017551C2 (nl) * 2001-03-09 2002-09-10 Kinetron Bv Elektrisch voedingsspanningssysteem voor het omzetten van kinetische energie in elektrische energie ten behoeve van miniatuurinrichtingen.
DE102011106785B4 (de) 2011-07-06 2015-07-23 JuB-Creative Product GmbH Kinetischer Wandler
WO2023105270A1 (fr) * 2021-12-09 2023-06-15 Mb & F Sa Mouvements horlogers à chronographe et leur application dans des pièces d'horlogerie

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334088A1 (de) * 1988-03-21 1989-09-27 Le Phare-Jean D'eve S.A. Uhr

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8402113A (nl) * 1984-07-03 1986-02-03 Kinetron Bv Stelsel voor elektrische voeding van draagbare miniatuur-energieverbruikers.
JP2525163B2 (ja) * 1986-11-19 1996-08-14 セイコーエプソン株式会社 発電装置付電子時計
KR900700935A (ko) * 1988-01-25 1990-08-17 야마무라 가쯔미 발전장치 부착 전자 팔목시계
CH680252B5 (de) * 1990-08-21 1993-01-29 Ebauchesfabrik Eta Ag
NL9001976A (nl) * 1990-09-07 1992-04-01 Kinetron Bv Generator.
EP0483065B1 (de) * 1990-10-22 1995-12-20 Charles Gigandet S.A. Armbanduhr

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334088A1 (de) * 1988-03-21 1989-09-27 Le Phare-Jean D'eve S.A. Uhr

Also Published As

Publication number Publication date
JP3607359B2 (ja) 2005-01-05
KR950033740A (ko) 1995-12-26
EP0681228A1 (de) 1995-11-08
US5532982A (en) 1996-07-02
CN1113018A (zh) 1995-12-06
KR100321491B1 (ko) 2002-07-02
CN1088859C (zh) 2002-08-07
TW285724B (de) 1996-09-11
HK1012445A1 (en) 1999-07-30
CH686474B5 (fr) 1996-10-15
DE69503313D1 (de) 1998-08-13
CH686474GA3 (fr) 1996-04-15
DE69503313T2 (de) 1999-03-11
JPH08152487A (ja) 1996-06-11

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