EP0124853B1 - Pièce d'horlogerie électronique à affichage analogique - Google Patents

Pièce d'horlogerie électronique à affichage analogique Download PDF

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Publication number
EP0124853B1
EP0124853B1 EP84104863A EP84104863A EP0124853B1 EP 0124853 B1 EP0124853 B1 EP 0124853B1 EP 84104863 A EP84104863 A EP 84104863A EP 84104863 A EP84104863 A EP 84104863A EP 0124853 B1 EP0124853 B1 EP 0124853B1
Authority
EP
European Patent Office
Prior art keywords
stator
pinion
setting
electronic timepiece
stem
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
Application number
EP84104863A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0124853A1 (fr
Inventor
Jean-Claude Schaffner
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
Original Assignee
Eta SA Fabriques dEbauches
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 Eta SA Fabriques dEbauches filed Critical Eta SA Fabriques dEbauches
Publication of EP0124853A1 publication Critical patent/EP0124853A1/fr
Application granted granted Critical
Publication of EP0124853B1 publication Critical patent/EP0124853B1/fr
Expired 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
    • G04B33/00—Calibers
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/008—Mounting, assembling of components

Definitions

  • the present invention relates to electronic timepieces with analog display. It relates, more particularly, to an analog watch in which the axes of the hands as well as the rotor of the stepping motor are pivotally mounted in the stator of the latter, while the mobiles which are not carried by the axes d 'Needles are also pivotally mounted in the stator.
  • the stator although being made of soft magnetic material, thus serves, to the exclusion of any bridge, as a single plate for all of the elements which constitute what is called the motor module.
  • a watch of this type is manufactured and marketed by the applicant under the name SWATCH. Its construction is, moreover, described in patent application GB 2 094 039.
  • This technique not only saves a bridge, but also makes a watch of relatively small thickness while being of easy construction and reduced manufacturing cost. In addition, mounting this motor module in the watch does not require any delicate operation.
  • the present invention represents a further improvement in the path opened by the proposal of the aforementioned patent application.
  • This improvement relates to the mounting of the control or time-setting mechanism of the watch, which generally consists of a sliding control rod, of a toothed pinion gear, called a sliding pinion, slidably mounted on the rod. and integral with the latter in rotation, with a mechanism consisting of a rocker and a pull tab, responding to the sliding of the rod to move the sliding pinion between a rest position and an active position and, finally, a return mobile meshing with one of the mobile motor module and the sliding pinion, when the latter is in the active position.
  • the invention therefore relates to an electronic timepiece comprising a support member, a motor consisting of a coil, a stator made of soft magnetic material, fixed on the support member, and of a rotor pivotally mounted in the stator, pins axes also pivotally mounted in the stator, mobiles ensuring the kinematic connection between the rotor and the pins axes, said mobiles being either carried by said axes or pivotally mounted in the stator, and a device for sliding control which comprises a control rod, a gear with edge teeth slidingly mounted on said rod and integral with the latter in rotation, a mechanism responding to the sliding of the rod to move said pinion between a rest position and an active position , and a return mobile meshing with one of said mobile and said pinion when the latter is in the active position.
  • this improvement is achieved in such a timepiece by the means appearing in the characterizing part of claim 1.
  • the timepiece thus defined therefore differs from most of the known parts, such as those described in documents FR-A-22899470, US-A-4243329, GB-A-2023890 and GB-A-2094518, in which a plate serves as a support both for the gear train and for the control mechanism.
  • stator 10 the stator, of very particular shape, of a Lavet motor which plays both the normal role of magnetic circuit guiding the magnetic field created by the coil and the role of single platinum for mobiles , the axes of the needles and the rod control device.
  • This stator is made, for example, of a ferro-nickel alloy sold under the brand "Vacoperm”. It typically has a thickness of 0.7 mm.
  • FIG. 1 shows that the stator 10 has roughly the shape of a V whose ends are connected to the core 12 of a coil 14.
  • the stator 10 is pierced with a circular bore 16 in which is housed the rotor 18 of the motor .
  • two notches 20 and 20 ' are provided in the stator to define the isthmus separating the two poles of the stator.
  • Two other notches 22 and 22 ' opposite over a diameter of the bore offset by approximately 50 ° relative to the diameter which joins the notches 20 and 20', serve to define, as is conventional in such a motor, the position rotor 18.
  • a part in the form of a skirt 24 closed by a plate 26 is forced into the bore 16.
  • the rotor 18, pivotally mounted inside this skirt consists of a magnet 28 mounted inside a cage 30 integral with an axis 32 engaged in the bearing which constitutes the bottom of the skirt 24 and an axis 34 engaged in the bearing which constitutes the plate 26.
  • the axis 34 extends towards the outside of the skirt by two lugs 36 and 36 'which act as gears.
  • the parts 24 and 26 ensure the positioning of the rotor relative to the stator. This avoids the delicate operation of centering the rotor in the stator during assembly of the movement.
  • stator 10 is pierced, substantially at its center, with a second bore 38 used for mounting the axes of the needles.
  • a guide tube 40 is driven which protrudes from the upper face of the stator.
  • the seconds axis 42 at the end of which the seconds hand (not shown) will be mounted, is engaged inside the tube 40.
  • the lower end of the axis 42 carries a seconds mobile 44 formed by a seconds wheel 44a meshing with the lugs 36-36 'and by a pinion 44b.
  • the minute mobile 46 which comprises, in a conventional manner, a carriageway formed by a tube 46a at the end of which is mounted the minute hand (not shown) and a pinion 46b, as well as a wheel 46c.
  • the barrel wheel 48 which comprises, on the one hand, the tube 48a on which is mounted the hour hand (not shown) and, on the other hand, the hour wheel 48b.
  • the stator 10 has a third bore 50 in which a sleeve 52 is forcibly engaged, which has an axial bore 54 serving as a bearing for an axis 56 which projects on either side of the stator 10. At its lower end, is mounted an intermediate wheel 58 which meshes with the second pinion 44b.
  • the axis 56 carries, at its other end, a pinion 60 which meshes with the minute wheel 46c.
  • the upper end of the axis 56 is rectified to serve as a pivot axis for the timer mobile 62 which is constituted, in a conventional manner, by a wheel 62a meshing with the minute pinion 46b and by a pinion. 62b meshing with the hour wheel 48b.
  • the tree 56 thus has a double function. On the one hand, it secures in rotation the wheel 58 and the pinion 60 and, on the other hand, it serves as a pivot axis for the timer mobile 62.
  • the control mechanism of the watch shown in FIG. 1, comprises a control rod 64 slidably mounted in the middle part shown partially at 66.
  • This rod has a square cross-section portion 64a which cooperates in rotation with the bore of a sliding pinion 68.
  • the rod 64 is in the active position when it is pulled (position shown in FIG. 1) and it is inactive in the pushed back position.
  • This rod communicates a reverse translational movement to the sliding pinion 68 by means of two levers which consist of a pull tab 70 and a rocker 72.
  • the pull tab 70 is pivotally mounted on a tenon 74 fixed to the stator 10.
  • the end 70a of the pull tab is engaged in a groove 64b of the rod 64.
  • the rocker 72 is pivotally mounted around a stud 76 which, like the stud 74, is fixed on the stator 10.
  • the end 72a of the rocker is engaged in a groove in the sliding pinion 68, while its other end 72b is in abutment on the rounded portion of the pull tab 70 which is at the level of the stud 74.
  • the end 70b of the pull tab can take place in one or the other of two cutouts 72c and 72d of the lever. This is, finally, pierced with an oblong window 72e through which a tenon 78 also attached to the stator. This pin is used both to maintain the rocker 72 and, by cooperating with the opening 72 thereof, to limit its stroke.
  • the sliding pinion 68 has, on its face which looks at the center of the movement, a toothing 68a which meshes with a reference 80 meshing itself with the timer wheel 62a.
  • the timer wheel return 80 is pivotally mounted around a nail 82 which is driven into a hollow stud 84 forming an integral part of the stator 10.
  • the latter is locally stamped to form a on the one hand, the pin 84 and, on the other hand, a groove 86 which guides the end 64c of the control rod.
  • a plate 88 fixed to the stator by means not shown partially covers the mobiles which provide the connection between the rotor and the axes of the needles.
  • This plate is pierced with a first opening 88a which allows the axes of the needles to pass and a second opening 88b at the level of the upper end of the timer pinion 62b.
  • This plate protects the mobiles and at the same time prevents the upper mobiles, namely the barrel wheel 48 and the timer 62, from escaping from their axes when handling the module.
  • the seconds axis 42 carries, at its upper part, a ring 90 which rotates freely in the tube 46a. This ring, coming into abutment on the guide tube 40, prevents the fall of the second 44 mobile during handling of the module.
  • the first advantage consists in the fact that the assembly produced comprises, with the exception of the control rod, all of the movable mechanical members of the watch. This set can be made separately, then mounted in the watch by an extremely simple operation which requires no special care.
  • Another advantage of the invention lies in the complete elimination of the bridges to use a single plate formed by the stator of the motor itself. This results in a significant reduction in the overall thickness of the watch equipped with such an assembly.
  • a third advantage of the invention lies in the fact that, the time setting mechanism and the timer return being mounted on the stator, it is very easy to guarantee their relative positioning.
  • a fourth advantage of the invention consists in the fact that the end of the rod is guided without other means than the stator itself.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
EP84104863A 1983-05-05 1984-04-30 Pièce d'horlogerie électronique à affichage analogique Expired EP0124853B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH245083A CH648984GA3 (enrdf_load_stackoverflow) 1983-05-05 1983-05-05
CH2450/83 1983-05-05

Publications (2)

Publication Number Publication Date
EP0124853A1 EP0124853A1 (fr) 1984-11-14
EP0124853B1 true EP0124853B1 (fr) 1989-11-02

Family

ID=4234103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104863A Expired EP0124853B1 (fr) 1983-05-05 1984-04-30 Pièce d'horlogerie électronique à affichage analogique

Country Status (7)

Country Link
US (1) US4488819A (enrdf_load_stackoverflow)
EP (1) EP0124853B1 (enrdf_load_stackoverflow)
JP (1) JPS59210391A (enrdf_load_stackoverflow)
CH (1) CH648984GA3 (enrdf_load_stackoverflow)
DE (1) DE3480360D1 (enrdf_load_stackoverflow)
HK (1) HK92192A (enrdf_load_stackoverflow)
SG (1) SG71292G (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3519876A1 (de) * 1985-06-03 1986-12-11 Timex Corp., Waterbury, Conn. Elektrische kleinuhr
DE3522688A1 (de) * 1985-06-25 1987-01-08 Pforzheimer Uhren Rohwerke Raederwerk einer armbanduhr
US4647218A (en) * 1985-09-16 1987-03-03 Timex Corporation Small stepping motor driven watch
JPH0187288U (enrdf_load_stackoverflow) * 1987-12-02 1989-06-08
CH677578GA3 (en) * 1989-11-17 1991-06-14 Watch or clock mechanism with two motor drives
DE69000181T2 (de) * 1989-04-21 1993-01-21 Ebauchesfabrik Eta Ag Elektronisches zeitmessgeraet mit mindestens zwei motoren.
US4932011A (en) * 1989-11-06 1990-06-05 Timex Corporation Three hand movement for a timepiece with improved timesetting gear train
CH681189B5 (enrdf_load_stackoverflow) * 1991-02-05 1993-08-13 Complications Sa
US5155711A (en) * 1992-04-30 1992-10-13 Timex Corporation Movement subassembly for a three and two hand timepiece using common piece parts
FR2752496B1 (fr) * 1996-08-14 1998-10-23 Ebauchesfabrik Eta Ag Transducteur electromecanique comportant deux rotors a aimants permanents
CH690881A5 (fr) 1996-12-04 2001-02-15 Ebauchesfabrik Eta Ag Transducteur électromécanique monophasé et dispositif électromécanique comprenant au moins un tel transducteur.
CH707808B1 (fr) * 2013-03-19 2017-05-15 Nivarox Far Sa Cassette de mécanisme d'horlogerie.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49130771A (enrdf_load_stackoverflow) * 1973-04-16 1974-12-14
JPS5926914B2 (ja) * 1974-05-02 1984-07-02 セイコーエプソン株式会社 時計のム−ブメント構造
CH1468974A4 (enrdf_load_stackoverflow) * 1974-11-01 1976-04-30
JPS51124473A (en) * 1975-04-22 1976-10-29 Citizen Watch Co Ltd Electronic watch
JPS51137459A (en) * 1975-05-23 1976-11-27 Seikosha Co Ltd Timepiece
US4243329A (en) * 1977-11-01 1981-01-06 Citizen Watch Co., Ltd. Watch movement construction
JPS5932751B2 (ja) * 1978-05-04 1984-08-10 シチズン時計株式会社 時計の表示修正装置
JPS57124273A (en) * 1981-01-23 1982-08-03 Seiko Instr & Electronics Ltd Switching and correcting mechanism for winding stem of timepiece
CH639525B (fr) * 1981-02-26 Ebauchesfabrik Eta Ag Module moteur pour montre electronique.
FR2500648A1 (fr) * 1981-02-26 1982-08-27 Ebauchesfabrik Eta Ag Montre electronique a affichage analogique

Also Published As

Publication number Publication date
JPH0530235B2 (enrdf_load_stackoverflow) 1993-05-07
US4488819A (en) 1984-12-18
JPS59210391A (ja) 1984-11-29
DE3480360D1 (en) 1989-12-07
EP0124853A1 (fr) 1984-11-14
HK92192A (en) 1992-11-27
SG71292G (en) 1992-09-04
CH648984GA3 (enrdf_load_stackoverflow) 1985-04-30

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