EP0681228B1 - Dispositif de couplage entre une source d'énergie mécanique et une génératrice électrique dans une pièce d'horlogerie - Google Patents
Dispositif de couplage entre une source d'énergie mécanique et une génératrice électrique dans une pièce d'horlogerie Download PDFInfo
- 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
Links
- 230000008878 coupling Effects 0.000 title claims description 11
- 238000010168 coupling process Methods 0.000 title claims description 11
- 238000005859 coupling reaction Methods 0.000 title claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 238000004804 winding Methods 0.000 description 5
- 230000035939 shock Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Images
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.
Landscapes
- 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)
Description
Un tel dispositif est d'autre part aussi connu du brevet US-A-4 644 246 pour alimenter en courant notamment une pièce d'horlogerie. Cette dernière comporte une génératrice AC, une batterie rechargeable et un système de charge interposé entre la génératrice et la batterie, la génératrice comportant un rotor multipolaire portant des aimants permanents et un stator pourvu d'enroulements délivrant le courant AC. Une masse excentrique entraíne le rotor. Le rotor, le stator et la masse sont montés coaxialement. Le couplage entre la masse, source d'énergie mécanique, et le rotor de la génératrice d'énergie électrique est réalisé, au moins dans un mode d'exécution décrit, par un ressort spiral dont une des extrémités est attachée à un élément cylindrique faisant partie de l'arbre de pivotement de la masse excentrique et dont l'autre des extrémités est attachée à une cage portant le rotor de la génératrice. A l'état de repos, le rotor est retenu magnétiquement par le stator, ce qui constitue un certain couple de positionnement. Quand la masse commence à tourner, elle tend ou enroule le ressort spiral autour de l'élément cylindrique jusqu'à ce que l'énergie accumulée par le ressort dépasse l'énergie de positionnement du rotor par rapport au stator. A partir de ce moment, le rotor est libéré et pivoté à vitesse rapide jusqu'à épuisement de l'énergie cinétique emmagasiné par le ressort, la génératrice produisant alors une force électromotrice élevée pour charger la batterie.
- la figure 1 est une coupe partielle dans un mécanisme utilisant le dispositif de couplage selon l'invention, et
- la figure 2 est une coupe du dispositif de couplage proprement dit et selon un mode de réalisation de l'invention.
Claims (5)
- Dispositif de couplage (1) entre une source d'énergie mécanique (2) et une génératrice d'énergie électrique (3) dans une pièce d'horlogerie comportant un arbre (4) entraíné par ladite source d'énergie mécanique et un élément cylindrique (5) monté fixement et coaxialement sur cet arbre, caractérisé par le fait que ledit élément cylindrique (5) est surmonté par un tube (6) monté pour tourner librement autour dudit arbre (4) et arrangé pour entraíner ladite génératrice, un ressort hélicoïdal (7) étant ajusté à frottement gras sur l'élément cylindrique et sur le tube par ses premières (8) et les dernières (9) spires respectivement, un espace (10) étant ménagé entre lesdits tube et élément cylindrique et les spires centrales (11) dudit ressort.
- Dispositif selon la revendication 1, caractérisé par le fait que le ressort hélicoïdal (7) présente des spires centrales (11) dont le diamètre est plus grand que le diamètre des premières (8) et dernières (9) spires, ces premières et dernières spires présentant un diamètre sensiblement égal.
- Dispositif selon la revendication 1, caractérisé par le fait que la source d'énergie mécanique est une masse oscillante (2) entraínant l'arbre (4) dans un sens unidirectionnel au moyen d'un système (12) comportant des roues à cliquets (13,14).
- Dispositif selon la revendication 1, caractérisé par le fait que la génératrice d'énergie électrique (3) est entraínée par une roue (15) de grand diamètre solidaire dudit tube (6).
- Dispositif selon la revendication 1, caractérisé par le fait que le tube (6) est étagé selon au moins deux diamètres différents, le premier (16) recevant les dernières spires (9) du ressort (7) et le second (17), plus petit, pénétrant au moins partiellement à l'intérieur de l'élément cylindrique (5) façonné en forme de coupelle, le diamètre extérieur (18) de ladite coupelle recevant les premières spires (8) dudit ressort (7).
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 (fr) | 1995-11-08 |
EP0681228B1 true EP0681228B1 (fr) | 1998-07-08 |
Family
ID=4209498
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95106408A Expired - Lifetime EP0681228B1 (fr) | 1994-05-04 | 1995-04-28 | Dispositif de couplage entre une source d'énergie mécanique et une génératrice électrique dans une pièce d'horlogerie |
Country Status (9)
Country | Link |
---|---|
US (1) | US5532982A (fr) |
EP (1) | EP0681228B1 (fr) |
JP (1) | JP3607359B2 (fr) |
KR (1) | KR100321491B1 (fr) |
CN (1) | CN1088859C (fr) |
CH (1) | CH686474B5 (fr) |
DE (1) | DE69503313T2 (fr) |
HK (1) | HK1012445A1 (fr) |
TW (1) | TW285724B (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5903071A (en) * | 1995-09-13 | 1999-05-11 | Citizen Watch Co., Ltd. | Small electric apparatus equipped with generator |
EP0905587B1 (fr) * | 1997-09-26 | 2002-11-13 | Seiko Epson Corporation | Montre mécanique réglée électriquement |
US6288519B1 (en) | 1998-12-22 | 2001-09-11 | Ericsson Inc. | Charging and vibrating method using movable magnets for a product using rechargeable batteries |
ATE421717T1 (de) * | 1999-09-17 | 2009-02-15 | Eta Sa Mft Horlogere 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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0334088A1 (fr) * | 1988-03-21 | 1989-09-27 | Le Phare-Jean D'eve S.A. | Montre |
Family Cites Families (6)
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 (fr) * | 1990-08-21 | 1993-01-29 | Ebauchesfabrik Eta Ag | |
NL9001976A (nl) * | 1990-09-07 | 1992-04-01 | Kinetron Bv | Generator. |
DE59107118D1 (de) * | 1990-10-22 | 1996-02-01 | Gigandet Charles Sa | Armbanduhr |
-
1994
- 1994-05-04 CH CH01398/94A patent/CH686474B5/fr not_active IP Right Cessation
-
1995
- 1995-04-20 TW TW084103917A patent/TW285724B/zh active
- 1995-04-25 KR KR1019950009688A patent/KR100321491B1/ko not_active IP Right Cessation
- 1995-04-27 US US08/429,574 patent/US5532982A/en not_active Expired - Lifetime
- 1995-04-28 EP EP95106408A patent/EP0681228B1/fr not_active Expired - Lifetime
- 1995-04-28 DE DE69503313T patent/DE69503313T2/de not_active Expired - Lifetime
- 1995-05-01 JP JP12884095A patent/JP3607359B2/ja not_active Expired - Fee Related
- 1995-05-03 CN CN95105759A patent/CN1088859C/zh not_active Expired - Lifetime
-
1998
- 1998-12-15 HK HK98113414A patent/HK1012445A1/xx not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0334088A1 (fr) * | 1988-03-21 | 1989-09-27 | Le Phare-Jean D'eve S.A. | Montre |
Also Published As
Publication number | Publication date |
---|---|
JPH08152487A (ja) | 1996-06-11 |
JP3607359B2 (ja) | 2005-01-05 |
DE69503313T2 (de) | 1999-03-11 |
US5532982A (en) | 1996-07-02 |
CH686474GA3 (fr) | 1996-04-15 |
CN1088859C (zh) | 2002-08-07 |
EP0681228A1 (fr) | 1995-11-08 |
TW285724B (fr) | 1996-09-11 |
KR950033740A (ko) | 1995-12-26 |
HK1012445A1 (en) | 1999-07-30 |
DE69503313D1 (de) | 1998-08-13 |
CH686474B5 (fr) | 1996-10-15 |
CN1113018A (zh) | 1995-12-06 |
KR100321491B1 (ko) | 2002-07-02 |
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