EP1659460B1 - Uhrenzeiger und seines Herstellungsverfahren - Google Patents

Uhrenzeiger und seines Herstellungsverfahren Download PDF

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Publication number
EP1659460B1
EP1659460B1 EP20040405711 EP04405711A EP1659460B1 EP 1659460 B1 EP1659460 B1 EP 1659460B1 EP 20040405711 EP20040405711 EP 20040405711 EP 04405711 A EP04405711 A EP 04405711A EP 1659460 B1 EP1659460 B1 EP 1659460B1
Authority
EP
European Patent Office
Prior art keywords
hand
pipe
needle
barrel
diameter
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
EP20040405711
Other languages
English (en)
French (fr)
Other versions
EP1659460A1 (de
EP1659460B8 (de
Inventor
Daniel Rochat
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.)
Rochat Daniel
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP20040405711 priority Critical patent/EP1659460B8/de
Publication of EP1659460A1 publication Critical patent/EP1659460A1/de
Priority to HK06111687.9A priority patent/HK1091276B/xx
Publication of EP1659460B1 publication Critical patent/EP1659460B1/de
Application granted granted Critical
Publication of EP1659460B8 publication Critical patent/EP1659460B8/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
    • G04B19/00—Indicating the time by visual means
    • G04B19/04—Hands; Discs with a single mark or the like
    • G04B19/044—Mounting and setting of the hands on the axle
    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/04—Hands; Discs with a single mark or the like
    • G04B19/042—Construction and manufacture of the hands; arrangements for increasing reading accuracy
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0043—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms
    • G04D3/0046—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms for hands
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0069—Watchmakers' or watch-repairers' machines or tools for working materials for working with non-mechanical means, e.g. chemical, electrochemical, metallising, vapourising; with electron beams, laser beams

Definitions

  • the present invention relates mainly to the field of watchmaking. It relates more particularly to a watch hand and its manufacturing method.
  • the needles of a watch are usually equipped with a barrel intended to be hunted on the shaft which will cause it to rotate.
  • This barrel can be either formed by simple stamping of the needle, or reported.
  • the barrel is, most often, brass, because this metal provides good ductility and facilitates the enlargement of the hole before hunting.
  • the tolerances of adjustments of the needles are not precise enough to allow a chase guaranteeing the same holding from one watch to another, without it being necessary to enlarge or tighten a significant percentage of the fixing holes. It must also be said that the clamping and driving forces are very sensitive to variations in diameter since, in some cases, a decrease in the diameter of the hole of 1 micron causes an increase in the driving force of 10 Newton. In addition, for needles driven with great force, it is difficult to disassemble without damaging them. In this case, they must be replaced by new needles during after-sales services.
  • the present invention aims to provide a needle barrel structure free from the above disadvantages.
  • the invention relates to an indicator needle provided with a gun intended to be driven on a motor shaft and provided with at least one slot parallel to its axis, open on its end opposite the needle and extending only over part of its length to allow it to deform elastically to settle around the tree.
  • this barrel has, at its end opposite the needle, a smaller inside diameter than at the other end.
  • the inner channel of the barrel is cylindrical but has, on the side opposite the needle, a portion of diameter substantially smaller than its portion located on the side of the needle.
  • the inner channel of the barrel is conical, its diameter increasing from its end opposite the needle.
  • the needle is provided, in a conventional manner, with a metal tubular barrel 12 which may be indifferently formed by stamping or inserting, in which case it is preferably made of steel.
  • the barrel 12 is provided with three rectilinear slots 14 parallel to its axis and spaced from each other by 120 °. These slots are open on the end of the barrel opposite the needle and extend only over part of its length. Typically, the ratio of their length to that of the barrel is advantageously between 0.75 and 0.85. As for the thickness of the slots 14, it is preferably between 0.035 and 0.05 mm, which is sufficient to give the barrel the required elasticity, without unduly weakening it.
  • the figure 2 shows that, according to a first embodiment of the invention, the inner channel 16 of the barrel 14 is cylindrical but has, on the side opposite the needle, about two-thirds of its length, a portion 16a of diameter substantially lower than its portion 16b located on the side of the needle. Typically, the difference between the two diameters is about 0.01 to 0.03 mm.
  • the smaller diameter portion 16a ensures the elastic clamping of the barrel on the shaft of the needle.
  • the larger diameter portion 16b corresponding to the non-slotted portion of the barrel, has little influence on the driving force but, on the other hand, reinforces the guidance of the needle on the shaft.
  • the figure 3 shows that, according to a second embodiment of the invention, the inner channel 18 of the barrel 14 is conical, its diameter increasing from its end opposite the needle. Typically, the difference between the two diameters is about 0.01 to 0.04 mm.
  • This construction provides the same effect as that of figure 2 , namely a driving force independent of the diameter of the unsplit portion of the barrel.
  • the figure 4 represents an embodiment variant of the needle of the figure 1 .
  • the three straight slots 14 extend, on the side of the needle, by a portion 20 which is perpendicular thereto.
  • This T-slot characteristic not only gives the barrel a better capacity for elastic deformation, but also makes it possible to adjust the clamping force on the shaft by modifying the length of the portion 20 of the T.
  • the gun described above has three slots, but it goes without saying that this number is given only as an example and that, depending on the hunting or stripping force sought, the number of slots could be one, two or four.
  • the width of the slots of the barrel must be as small as possible (0.035 to 0.05 mm) in order to allow its elastic deformation without weakening it excessively.
  • the width and length of the slots must be defined with great precision. Such requirements of miniaturization and precision are all the more difficult to satisfy that the guns themselves are very small since, in general, their diameter is of the order of 0.4 to 2 mm, their length, of the order of 0.25 to 2 mm and their thickness, of the order of 0.1 to 0.15 mm.
  • the realization of the slits of the needle barrel uses a laser and, more particularly, a pulsed solid laser, called trephination, whose wavelength is between 1,000 and 1,100. nanometers.
  • a laser of this type is marketed, for example, under the reference HL 101 P, by TRUMPF Laser or, under the reference MUST 1010 L, by Novalase SA.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Electromechanical Clocks (AREA)

Claims (9)

  1. Zeiger mit einem Rohr (12), das dazu gedacht ist, auf eine Antriebswelle einpressen zu werden und mit mindestens einem Schlitz (14) ausgestattet ist, der parallel zu seiner Achse verläuft und an seinem des Zeigers gegenüberliegenden Ende offen ist und sich nur über einen Teil seiner Länge erstreckt, um ihm zur Befestigung um die Welle eine elastische Verformung zu ermöglichen, dadurch gekennzeichnet, dass das Rohr an seinem des Zeigers gegenüberliegenden Ende einen Innendurchmesser aufweist, der kleiner ist als derjenige am anderen Ende.
  2. Zeiger nach Anspruch 1, dadurch gekennzeichnet, dass der Innenkanal (16) des Rohrs (12) zylindrisch ist, jedoch an der des Zeigers gegenüberliegenden Seite einen Abschnitt (16a) aufweist mit einem Durchmesser, der wesentlich kleiner ist als sein nadelseitiger Abschnitt (16b).
  3. Zeiger nach Anspruch 2, dadurch gekennzeichnet, dass der Abschnitt (16a) mit kleinerem Durchmesser sich über ungefähr zwei Drittel der Länge des Rohrs erstreckt.
  4. Zeiger nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass der Unterschied zwischen den Durchmessern der beiden Abschnitte (16a, 16b) ungefähr 0,01 bis 0,03 mm beträgt.
  5. Zeiger nach Anspruch 1, dadurch gekennzeichnet, dass der Innenkanal (18) des Rohrs konisch ist, wobei sein Durchmesser von seinem des Zeigers gegenüberliegenden Ende ausgehend größer wird.
  6. Zeiger nach Anspruch 5, dadurch gekennzeichnet, dass der Unterschied zwischen dem kleineren und dem größeren der Rohrdurchmesser ungefähr 0,01 bis 0,04 mm beträgt.
  7. Zeiger nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Verhältnis der Länge des Schlitzes (14) zu derjenigen des Rohrs zwischen 0,75 und 0,85 liegt.
  8. Zeiger nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Schlitz (14) sich zeigerseitig um einen dazu rechtwinkligen Abschnitt (20) verlängert.
  9. Zeiger nach einem der Ansprüche 7 bis 8, dadurch gekennzeichnet, dass die Dicke des Schlitzes (14) zwischen 0,035 und 0,05 mm liegt.
EP20040405711 2004-11-17 2004-11-17 Uhrenzeiger und seines Herstellungsverfahren Expired - Lifetime EP1659460B8 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20040405711 EP1659460B8 (de) 2004-11-17 2004-11-17 Uhrenzeiger und seines Herstellungsverfahren
HK06111687.9A HK1091276B (en) 2006-10-24 Watch hand and its process of manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20040405711 EP1659460B8 (de) 2004-11-17 2004-11-17 Uhrenzeiger und seines Herstellungsverfahren

Publications (3)

Publication Number Publication Date
EP1659460A1 EP1659460A1 (de) 2006-05-24
EP1659460B1 true EP1659460B1 (de) 2009-01-07
EP1659460B8 EP1659460B8 (de) 2009-04-29

Family

ID=34932367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040405711 Expired - Lifetime EP1659460B8 (de) 2004-11-17 2004-11-17 Uhrenzeiger und seines Herstellungsverfahren

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EP (1) EP1659460B8 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE469377T1 (de) 2006-11-09 2010-06-15 Eta Sa Mft Horlogere Suisse Montageelement, das dehnbare strukturen in form von aufeinander liegenden plättchen umfasst, und mit diesem element ausgerüstete uhr
ATE467860T1 (de) 2006-11-09 2010-05-15 Eta Sa Mft Horlogere Suisse Montageelement, das dehnbare strukturen in form von gabeln umfasst, und dieses element umfassende uhr
EP1921516B1 (de) * 2006-11-09 2010-01-13 ETA SA Manufacture Horlogère Suisse Montageelement, das zwei Reihen von dehnbaren Strukturen umfasst, und dieses Element umfassende Uhr
EP2230572B1 (de) * 2009-03-17 2012-01-25 Nivarox-FAR S.A. Radialverschlusssystem für Uhrwerkskomponente
EP2230571B1 (de) * 2009-03-17 2014-05-07 Nivarox-FAR S.A. Radialverschlusssystem für Uhrwerkskomponente
EP2988177A1 (de) * 2014-08-21 2016-02-24 Universo S.A. Zeiger einer Armbanduhr
EP3273311A1 (de) 2016-07-20 2018-01-24 ETA SA Manufacture Horlogère Suisse Anzeigevorrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH7334A (fr) * 1893-09-13 1894-04-14 Charles Morlet Nouveau système d'aiguille de montres
CH532992A (de) * 1971-02-25 1972-07-14 Inst Angewandte Physik Anlage zur automatischen Bearbeitung von Uhrsteinen mittels Laserstrahlen
US3855787A (en) * 1972-04-01 1974-12-24 Junghans Gmbh Geb Attachment for the hands of a watch

Also Published As

Publication number Publication date
EP1659460A1 (de) 2006-05-24
EP1659460B8 (de) 2009-04-29
HK1091276A1 (zh) 2007-01-12

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