EP0980543B1 - Verfahren zur herstellung eines uhrengehäuses - Google Patents

Verfahren zur herstellung eines uhrengehäuses Download PDF

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Publication number
EP0980543B1
EP0980543B1 EP99904678A EP99904678A EP0980543B1 EP 0980543 B1 EP0980543 B1 EP 0980543B1 EP 99904678 A EP99904678 A EP 99904678A EP 99904678 A EP99904678 A EP 99904678A EP 0980543 B1 EP0980543 B1 EP 0980543B1
Authority
EP
European Patent Office
Prior art keywords
support ring
watch
elastomeric
case
circle
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
EP99904678A
Other languages
English (en)
French (fr)
Other versions
EP0980543A1 (de
Inventor
Philippe Savy
Michael Bach
Sébastien Bolzt
Bertrand Carrard
Clément Meyrat
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.)
Rado Uhren AG
Original Assignee
Rado Uhren AG
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 Rado Uhren AG filed Critical Rado Uhren AG
Publication of EP0980543A1 publication Critical patent/EP0980543A1/de
Application granted granted Critical
Publication of EP0980543B1 publication Critical patent/EP0980543B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G04D3/0061—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components for protecting the mechanism against external influences
    • 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
    • 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
    • G04B37/00—Cases
    • G04B37/04—Mounting the clockwork in the case; Shock absorbing mountings
    • G04B37/05—Fixed mountings for pocket or wrist watches
    • G04B37/055—Fixed mountings for pocket or wrist watches with shock damping means including the winding stem
    • 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
    • G04B37/00—Cases
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/081—Complete encasings for wrist or pocket watches also comprising means for hermetic sealing of the winding stem and crown
    • 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
    • G04B37/00—Cases
    • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
    • 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
    • G04B37/00—Cases
    • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
    • G04B37/223—Materials or processes of manufacturing pocket watch or wrist watch cases metallic cases coated with a nonmetallic layer

Definitions

  • the present invention relates to a method of manufacturing a box of watch comprising a middle part, a back and a support ring intended to support internal elements of the watch and fixed inside the middle through of an element of elastomeric material at least part of which is formed by molding against the middle part, in which the middle part and the ring are produced separately support, then the support ring is fixed by means of the material element elastomer.
  • the invention also relates to a watch case obtainable by this process.
  • Patent application FR 2 463 437 describes a process of the kind indicated in preamble above.
  • Most or all of the interior surface of the middle part is covered with an annular seal made of elastic material which is rendered secured to this surface by molding and vulcanization.
  • the inside of this seal has protrusions serving as supports for internal elements of the watch, in particular with the movement casing net and a ring ring.
  • the joint thus formed ensures an elastic suspension of the movement and can also ensure a tight closure from the bottom and the bezel of the watch case.
  • it is made of a relatively soft material, it cannot offer high precision of positioning of the movement or other internal elements of the watch, such as the for example makes a casing circle.
  • the present invention aims to overcome the problems mentioned above, by providing a simple and economical manufacturing process, which allows correct and precise positioning of the movement in the middle of the case shows and compensation for any deviations in the dimensions of the middle, in particular avoiding machining operations inside the middle.
  • the invention also aims to facilitate the realization of the sealing means of the watch case.
  • the elastomeric nature of the material molded in the gap between the ring support and middle allows to overcome constraints, previously very strict, in terms of shape and inside machining dimensions of the middle. In fact, no machining is necessary inside the middle on the surfaces which will be covered by the elastomeric material, and it is even advantageous that these surfaces either rough or rough, which improves grip.
  • the external dimensions of the support ring is less problematic, because this part is generally machined if it is made of metal, or molded with sufficient precision if it is made of plastic material.
  • the support ring in particular when it is a casing circle, does not need to be positioned by pressing against interior surfaces of the middle part, in particular the surfaces which will be contact with the elastomer. This allows to choose other places as reference surfaces for its positioning, for example of the outer surfaces of the middle which anyway should be machined or polished, or surfaces that are decisive for the exterior appearance of the watch, such as the notch of ice or substantive.
  • the element made of elastomeric material is molded into said interval by injection, transfer or compression.
  • This item can understand at least a part that is put in place before the step of overmolding.
  • the element the element made of elastomeric material can constitute a seal between the middle and the bottom of the case, and / or between the middle and one control rod passing through the middle, and / or between the middle and a glass of the box.
  • the overmolded elastomeric material is chosen so as to adhere to the material of the middle part.
  • the watch case 1 shown in Figures 1 to 3 includes a middle 2, a casing circle 3 and a back 7.
  • a movement 4 and a dial 5 will be supported by the casing circle 3.
  • An element in molded elastomeric material 9 fills the entire gap between the circle 3 and the middle part 2 and is extended, in a lateral hole of the middle part, by a tubular part 9 ′, the interior of which forms a housing 10 intended to receive the control rod 17 of the watch.
  • This tubular part present in the housing 10 a circular sealing bead 12.
  • the housing 10 opens into a crown recess 11 excavated in the middle 2.
  • Figure 2 shows a section angularly offset from the section of FIG. 1. This is how the orifice 13 of the housing 10 is outside of the cutting plane.
  • Figure 2 shows location 6 of movement 4, as well the location 8 of the bottom 7.
  • the circle 3 has a cavity 14 intended receiving a lug of movement 4, this lug being intended to make the movement 4 integral with the circle 3.
  • Figures 1 and 2 show a shoulder 15 of the circle 3, embedded in the elastomer element 9. This shoulder makes integral, after overmolding, the circle 3 and element 9.
  • the elastomer element 9, in Figure 3 achieves sealing both between the base 7 and the middle part 2 as between the middle part and the control rod 17, thanks to the bead 12.
  • the bottom 7 is fixed by clipping on the lower part of the elastomer element 9, thanks to a notch 16, this which ensures watertight mounting.
  • the glass 18 is sealed, in the example described, by a gasket 19 separate from the elastomer element 9 and compressed between the edge of the glass and a cylindrical surface 20 of the middle, called notch ice cream.
  • a gasket 19 separate from the elastomer element 9 and compressed between the edge of the glass and a cylindrical surface 20 of the middle, called notch ice cream.
  • the elastomer element 9 has a shape extending upwards, behind a flange 21 placed above of dial 5 as shown in FIG. 5, to constitute a gasket ensuring sealing between the glass 18 and the middle part 2.
  • the surfaces of the middle part 2 and of the casing ring 3 on which the elastomer will be applied are first coated with a finishing liquid (primer) capable of promoting the adhesion of the elastomer.
  • the middle 2 is placed in a mold with the fixed part (not shown) perfectly shoulder the outside of the middle to prevent it from bursting under pressure injection, which can reach very high values.
  • Figure 4 shows three moving parts of the mold, namely an upper core 22 engaging in the circle 3 to keep it in position, a lower core 23 intended to mold the lower part of the elastomer element 9, and a drawer 24 intended to form the housing 10 in the tubular part 9 '.
  • the drawer 24 can be coated with a primer preventing it from adhering to the elastomer.
  • Items 22 to 24 are movable in the directions indicated by the arrows.
  • the elastomer is injected in known manner through the cores 22 and / or 23, holes passage being arranged through the circle 3.
  • the lateral positioning of the circle 3 relative to the middle part 2 is not not by pressing against the middle, but only by means of the core upper 22, guided by the notch 20 serving as a reference surface on the middle.
  • An upper surface 26 of the middle part can serve as a surface height reference, if necessary.
  • the release is carried out in a conventional manner: the drawer 24 is removed outwards, the lower core 23 is torn down and the core upper 22 is then withdrawn upwards.
  • the self-adhesive properties of the elastomeric material 9 itself make it possible to perfectly join the circle 3 and the middle part 2, in removing the constraints of interior shape of this middle.
  • the tubular part 9 ′ could be made beforehand, either by overmolding, or prefabricated and fixed in the hole in the middle before the overmolding step.
  • Figures 5 and 6 show a second embodiment of the invention, the differences from which will be described with respect to the first fashion.
  • the elastomer element 9 is molded between the middle part 2 and a support ring formed here by the flange 21.
  • the element 9 also fills the function of a casing circle, since its inner surface obtains by molding a precise position and dimensions, regardless of possible inaccuracies inside the middle.
  • the element 9 has an internal shoulder 30 in which takes place an external thread 31 of the movement.
  • the elastomer element 9 is extends upwards to form, along the notch of ice 20, a filling sealing 32 between the crystal 18 and the middle part.
  • Figure 6 shows schematically that the elastomer element 9 shown in Figure 5 is molded similarly to what has been described in reference to FIG. 4, but in this case the guidance of the cores 22 and 23 is slightly different.
  • the upper core 22 is guided laterally on the middle part, that is to say the peripheral surface of the middle part 2, serving as a reference surface 33.
  • the lower core 23 is guided relative to the upper core 22 by vertical sliding, for example on shafts 34 crossing the two cores. Vertical positioning can be done by support on the upper surface 26 of the middle part serving as the reference.
  • the method according to the invention is applicable regardless of the mode of manufacture of the middle and other parts of the watch case. However, it is particularly advantageous when one can do without a machining inside the middle. This is particularly the case when it is formed by molding, for example according to the MIM (Metal Injection) process Molding) or when made of ceramic, hard metal or other material likely to be molded.
  • MIM Metal Injection

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Electric Clocks (AREA)
  • Gasket Seals (AREA)
  • Electromechanical Clocks (AREA)

Claims (13)

  1. Verfahren zur Herstellung eines Uhrengehäuses (1), das ein Gehäusemittelteil (2), einen Boden (7) und einen Tragreif (3, 21), der dazu bestimmt ist, die inneren Elemente der Uhr zu tragen, und der in dem Gehäusemittelteil über ein Element (9) aus einem elastomeren Werkstoff befestigt ist, wovon ein Teil durch Formen gegen das Gehäusemittelteil und in einem Zwischenraum mit Hilfe von wenigstens einem Kern (22, 23) gebildet ist, umfasst, wobei in dem Verfahren das Gehäusemittelteil und der Tragreif getrennt hergestellt werden und dann der Tragreif mittels des Elements aus einem elastomeren Werkstoff befestigt wird,
       dadurch gekennzeichnet, dass wenigstens jener Teil des Elements (9) aus einem elastomeren Werkstoff durch jenes Formen in einem Zwischenraum zwischen dem Gehäusemittelteil (2) und dem Tragreif (3, 21) gebildet wird, während der Tragreif in einer gewünschten Position innerhalb des Gehäusemittelteil mittels jenes Kerns (22, 23) gehalten wird, der in Bezug auf eine oder mehrere Referenzoberflächen (20, 26, 33) des Gehäusemittelteils positioniert wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Elastomerelement (9) in den Zwischenraum durch Einspritzen, durch Transfer oder durch Kompression gegossen wird.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass das Element (9) aus einem elastomeren Werkstoff wenigstens einen Teil (9') umfasst, der vor dem Schritt des Giessens angeordnet wird.
  4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Element (9) aus einem elastomeren Werkstoff eine Dichtung zwischen dem Gehäusemittelteil (2) und dem Boden (7) des Gehäuses bildet.
  5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Element (9) aus einem elastomeren Werkstoff eine Dichtung zwischen dem Gehäusemittelteil (2) und einem durch das Gehäusemittelteil verlaufenden Steuerstift (17) bildet.
  6. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Element (9) aus einem elastomeren Werkstoff eine Dichtung zwischen dem Gehäusemittelteil (2) und einem Glas (18) des Gehäuses bildet.
  7. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass der gegossene elastomere Werkstoff so gewählt ist, dass er an dem Werkstoff, aus dem das Gehäusemittelteil (2) hergestellt ist, haftet.
  8. Verfahren nach Anspruch 1, dadurch gekennzeichnet, das der Tragreif (3) ein Aufschubreif ist.
  9. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Tragreif (3, 21) aus Kunststoff besteht.
  10. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Gehäusemittelteil (2) aus Keramik oder Hartmetall besteht.
  11. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass jene Referenzoberflächen (20, 26, 33) nicht mit dem Element aus einem elastomeren Werkstoff i n Kontakt sind.
  12. Verfahren nach Anspruch 11, dadurch gekennzeichnet, dass die Referenzoberflächen (26, 33) äussere Oberflächen des Gehäusemittelteils sind.
  13. Uhrengehäuse, das durch ein Verfahren nach einem der vorhergehenden Ansprüche erhalten wird.
EP99904678A 1998-02-27 1999-02-26 Verfahren zur herstellung eines uhrengehäuses Expired - Lifetime EP0980543B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH47198 1998-02-27
CH00471/98A CH693049A5 (fr) 1998-02-27 1998-02-27 Procédé de réalisation d'étanchéité dans une montre.
PCT/CH1999/000092 WO1999044104A1 (fr) 1998-02-27 1999-02-26 Procede de fabrication d'une boite de montre

Publications (2)

Publication Number Publication Date
EP0980543A1 EP0980543A1 (de) 2000-02-23
EP0980543B1 true EP0980543B1 (de) 2004-11-17

Family

ID=4187766

Family Applications (2)

Application Number Title Priority Date Filing Date
EP99102069A Withdrawn EP0939351A1 (de) 1998-02-27 1999-02-02 Verfahren zur Herstellung einer Dichtung
EP99904678A Expired - Lifetime EP0980543B1 (de) 1998-02-27 1999-02-26 Verfahren zur herstellung eines uhrengehäuses

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP99102069A Withdrawn EP0939351A1 (de) 1998-02-27 1999-02-02 Verfahren zur Herstellung einer Dichtung

Country Status (10)

Country Link
US (1) US6213635B1 (de)
EP (2) EP0939351A1 (de)
JP (1) JP4384268B2 (de)
KR (1) KR100613540B1 (de)
CN (1) CN1122897C (de)
CH (1) CH693049A5 (de)
DE (1) DE69921914T2 (de)
ES (1) ES2234239T3 (de)
HK (1) HK1028114A1 (de)
WO (1) WO1999044104A1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000050962A1 (fr) * 1999-02-26 2000-08-31 Citizen Watch Co., Ltd. Boitier de montre
DE69935656T2 (de) * 1999-04-22 2007-12-13 Eta Sa Manufacture Horlogère Suisse Verfahren zum Montieren eines Gehäuseringes in einem Uhrengehäuse und dafür verwendbarer Gehäusering
US6863436B2 (en) * 2001-12-19 2005-03-08 Eta Sa Fabriques D'ebauches Watch including a casing ring for a movement mounted in a case assembled via the bezel or via the back cover
EP1420307A1 (de) * 2002-11-18 2004-05-19 Eterna SA Uhrgehäuse
EP2409200B1 (de) * 2009-03-19 2014-04-23 Rolex S.A. Armbanduhrgehäuse
JP5652087B2 (ja) * 2010-09-29 2015-01-14 カシオ計算機株式会社 ケースユニット及びケースユニットの組立方法
JP5588314B2 (ja) * 2010-11-17 2014-09-10 セイコーインスツル株式会社 時計
EP2590325A1 (de) * 2011-11-04 2013-05-08 The Swatch Group Research and Development Ltd. Thermokompensierter Resonator aus Keramik
CH708743A2 (fr) * 2013-10-25 2015-04-30 Meco Sa Joint pour pièce d'horlogerie.
EP3220210B1 (de) * 2016-03-15 2020-05-06 Montres Breguet S.A. Uhr mit schlagwerk oder musik und resonanz-uhrglasfassung
JP6531754B2 (ja) * 2016-12-21 2019-06-19 カシオ計算機株式会社 機器ケース及び時計
EP3561612B1 (de) * 2018-04-23 2023-07-26 Rolex Sa Zusammenbauverfahren einer uhr
CN109752943B (zh) * 2018-12-26 2021-03-23 厦门理工学院 一种钟表正负极自动组装机
EP3712716B1 (de) 2019-03-21 2023-03-15 Rolex Sa Lünette einer uhr
JP2021167809A (ja) 2020-04-03 2021-10-21 ロレックス・ソシエテ・アノニムRolex Sa 時計ケース用密封システム
EP3923088A1 (de) * 2020-06-12 2021-12-15 Comadur S.A. Verfahren zur herstellung eines verzierungsteils aus hartem material, das mit einer polymerbeschichtung versehen ist

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR898248A (fr) 1941-03-31 1945-04-13 Gebru Der Thiel G M B H Dispositif de support du mécanisme des montres
CH310877A (fr) * 1951-06-05 1955-11-15 Juillerat Ch Jules Boîte de montre étanche et pare-chocs.
CH1247369A4 (de) 1968-08-19 1971-02-15
CH782271A4 (de) * 1971-05-27 1973-08-15
CH632890B (fr) * 1979-08-08 Gen Watch Co Ltd Procede de fabrication d'une boite de montre et boite de montre obtenue par ce procede.
CH634454GA3 (en) 1980-04-15 1983-02-15 Method of manufacturing a waterproof watch case
US5033035A (en) 1989-09-27 1991-07-16 Mondaine Watch Ltd. Watertight watch
CH681127B5 (de) 1991-07-30 1993-07-30 Werthanor Sa

Also Published As

Publication number Publication date
CN1256765A (zh) 2000-06-14
US6213635B1 (en) 2001-04-10
KR20010020182A (ko) 2001-03-15
WO1999044104A1 (fr) 1999-09-02
DE69921914T2 (de) 2006-03-02
HK1028114A1 (en) 2001-02-02
CH693049A5 (fr) 2003-01-31
KR100613540B1 (ko) 2006-08-16
ES2234239T3 (es) 2005-06-16
CN1122897C (zh) 2003-10-01
EP0939351A1 (de) 1999-09-01
DE69921914D1 (de) 2004-12-23
JP4384268B2 (ja) 2009-12-16
EP0980543A1 (de) 2000-02-23
JP2001522468A (ja) 2001-11-13

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