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EP1531696B1 - Verfahren zur herstellung einem automatischen verschluss für ein uhrarmband - Google Patents

Verfahren zur herstellung einem automatischen verschluss für ein uhrarmband Download PDF

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Publication number
EP1531696B1
EP1531696B1 EP03750804A EP03750804A EP1531696B1 EP 1531696 B1 EP1531696 B1 EP 1531696B1 EP 03750804 A EP03750804 A EP 03750804A EP 03750804 A EP03750804 A EP 03750804A EP 1531696 B1 EP1531696 B1 EP 1531696B1
Authority
EP
European Patent Office
Prior art keywords
branches
clasp
elements
blank
longitudinal
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
EP03750804A
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English (en)
French (fr)
Other versions
EP1531696A1 (de
Inventor
Claude Grossiord
Jean-Louis Bohrer
Frédéric NICOLET
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.)
Chanel SARL
Original Assignee
G&F Chatelain SA
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 G&F Chatelain SA filed Critical G&F Chatelain SA
Publication of EP1531696A1 publication Critical patent/EP1531696A1/de
Application granted granted Critical
Publication of EP1531696B1 publication Critical patent/EP1531696B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/44—Making other particular articles fancy goods, e.g. jewellery products
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C27/00—Making jewellery or other personal adornments
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • A44C5/243—Automatic folding spring closure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/47—Strap-end-attaching devices
    • Y10T24/4782—Watch strap
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49579—Watch or clock making

Definitions

  • the present invention relates to a method of manufacturing a clasp type automatic opening / closing, including wristwatch.
  • clasps consist essentially of two elements pivotally mounted relative to each other at the respective ends of which are connected the two free ends of the strands constituting a wristwatch.
  • the two elements forming such a clasp are thus able to occupy two positions, namely a first position, or closed position, in which the two elements are locked one on the other by mechanical holding means, and a second position, or open position, in which these two elements are released, thereby increasing the overall diameter of the wristwatch so as to allow the user to introduce or extract it easily from his wrist.
  • a disadvantage of this type of clasp is that, in the open position, the two elements can not rotate beyond an angle of 180 °, which sometimes makes it difficult to introduce the wrist of the user into the wristband .
  • any opening force exerted on these two elements, which tends to rotate them beyond an aligned position, has the effect of irreparably damaging the clasp.
  • the system is double-fold, that is to say that the clasp is composed of three elements, namely a main element which comprises at each of its ends a joint on which is mounted a rocking element as described above.
  • the clasps thus made consist of parts machined in the mass and, because their different constituent elements must meet contradictory mechanical requirements they are made of several assembled parts.
  • the bending spring is attached by fastening means, such as riveting or welding, on the main element.
  • the object of the present invention is to propose a clasp of the aforementioned type intended to be manufactured, not by mechanical machining methods, but by processes for producing thin pieces such as stamping, folding and cutting. .
  • the invention also provides a clasp of this type in which the spring which is provided with the main element is an integral part thereof and does not consist of an insert.
  • the present invention thus makes it possible to produce a clasp of high mechanical quality at a particularly attractive cost price.
  • the object of the present invention is to propose a manufacturing method making it possible to produce in one piece each of the two constituent elements of a clasp.
  • the method comprises a step during which a blank strip is formed from a strip consisting of a wound strip, whose width corresponds to one of the dimensions of the element to be produced, each of the blanks constituting the blank strip being connected to the blanks which are adjacent to it by at least one connecting lug.
  • the blanks may be arranged so that their longitudinal axis is oriented perpendicular to the longitudinal axis of the blank strip.
  • the blank strip will move, along its longitudinal axis, in front of heating means located in zones disposed on its transverse edges, so as to perform an annealing operation on at least one longitudinal strip of the blank strip.
  • the localized heating means will consist of a laser beam.
  • two tabs of the same end of a tilting element will be wound so as to form a double hinge, namely an internal hinge intended to receive an axis of rotation common with the main element and an external hinge intended to receive an axis stop.
  • the bending spring will be formed on the main element.
  • the rolling of the branches of the two elements which is not provided with the bending spring may be double, so as to form on the one hand a first internal hinge admitting the axis of rotation through the hinges of the joint , and a second outer hinge for supporting an abutment axis disposed beyond the first axis of rotation, outwardly, and on which the bending spring will bear in the position of use of the clasp.
  • At least the element provided with the bending spring will consist of a stainless steel with a high content of elements such as nickel, chromium, molybdenum, cobalt, sum of the contents in these elements being greater than 80%.
  • the clasp according to the invention which is represented on the Figures 2 to 4 is of the double deployment type, that is to say that it consists of three essential elements, know of a main element 1 and two tilting elements 3.
  • the figure 7 is a perspective view of an alternative embodiment of a clasp according to the invention.
  • the main element 1 is bent and ends at each of its two ends by two branches 5 whose ends are wound so as to form hinges 7. These ends comprise two longitudinal notches 9 which thus define a central tongue which constitutes a spring bending 11.
  • the tilting element 3 also comprises on one side, two longitudinal branches 13 which terminate in a double hinge 15, formed of an internal hinge 15a and an external hinge 15b, and which are arranged in such a way transverse that they can take place in the longitudinal notches 9 of the main element 1. It comprises at its other end a central lug 6 whose end is rolled so as to form a hinge 8 intended to be connected to one the ends of the wristband of the watch.
  • the main elements 1 and tilting 3 are connected by an axis of rotation 16 which is force-fitted in the hinges 7 of the main element 1 and the internal hinges 15a of the tilting element 3.
  • a stop axis 18 is force-fitted in the hinges 15b.
  • the bending springs 11 bear on their respective abutment axes 18, so that they exert on them a force creating a torque of rotation on the tilting elements 3 (due to the shift e between the axis of rotation 15 and the abutment axis 18) tending to apply them elastically against the main element 1, so that they then provide the elastic retention in the closed position of the clasp.
  • the branches of the main elements 1 and tilting 3 will preferably have respective ribs 20 and 22 which will control their rigidity.
  • the space between the branches 13 of the tilting element 3 extends inwards to form a window 24 whose dimensions are greater than those of the end of the spring 11, it is then possible to further rotate the two elements since, during this movement, the end of the spring 11 has the ability to pass through the window 24.
  • Each of the main and rocking elements 3 is obtained from a strip of stainless steel which is cut, for example by a punching operation, so as to constitute two respective blanks 1 'and 3', as shown in FIG. figure 1 .
  • the strip has a rigidity which is equal to that which is desired to give the flexion spring 11, so that it is able to perform its functions as previously specified.
  • the hinges 7 and 15 of the main elements 1 and tilting 3 are formed by winding the ends of the respective branches 5 and 13 and welding the ends thereof on the corresponding elements.
  • this welding operation will be performed using means allowing extreme precision and in particular by means of the laser beam type.
  • the manufacture of the main elements 1 and tilting 3 will be carried out by a continuous process in which the blanks are arranged in a continuous strip (or blank strip 12), each blank being connected to the blanks which are adjacent to it by connecting lugs 4.
  • the blanks 1 'and 3' are arranged transversely with respect to the metal strip, that is to say that their longitudinal axis xx 'is perpendicular to the longitudinal axis yy' of the strip.
  • the strip 2 passes into the cutting station P 1 where the blank 1 'is formed, this blank being such that the blank is connected to each of the blanks 1' which are adjacent to it by two legs link 4 to form a blank strip 12, so that it is possible to maintain throughout the chain benefits of this type of provision.
  • the blank strip 12 moves in front of the station P 2 which consists of a laser beam which performs a very localized heating on the two longitudinal edges of the strip which corresponds to the two ends of the blank 1 and more precisely at the ends of the branches 5.
  • the width 1 of this treatment band 10, corresponds to the length 1 of the branches which will then be rolled to make the hinge 7. This length will be limited so as not to reduce the stiffness of the flexion spring 11.
  • the skilled person will know how to adjust the power of the tool as well as the speed of movement of the blank 1 'in front of it so that the metal is brought to the appropriate temperature to achieve effective annealing.
  • the third step III is carried rolling the ends of the tabs 5, so as to form the hinges 7 at both ends of the blank 1 '.
  • the production line will manufacture the tilting elements 3, one of the ends thereof will be realized with double hinges, that is to say they will consist of a slightly flattened rolling in its center which it will allow it to receive on the inner hinge 15a the axis of rotation 16 and on the outer hinge 15b the abutment axis 18.
  • the station P 4 carries a rib on each of the legs of the rocking element 3 which will compensate for its loss of rigidity caused by the annealing operation.
  • the station P 5 uses a cutting machine to shear and eliminate the connecting lugs 4 which join together the blanks 1 '.
  • Clasps according to the invention can be made with many types of metals. However, in the field of clasps for products It is preferable to use a stainless steel with a high content of elements such as nickel, chromium, molybdenum and cobalt, the sum of the contents of these elements being preferably greater than 80%, because of its real and recognized qualities. stainless steel in highly oxidizing environments, such as those to which these products are subjected when in contact with the wrists of a user.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Buckles (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Adornments (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Closures For Containers (AREA)
  • Farming Of Fish And Shellfish (AREA)

Claims (11)

  1. Verfahren zur Herstellung einer Schließe, insbesondere für ein Uhrarmband, ausgehend von einem metallischen Bandmaterial (2), vom Typ mit einem Hauptelement (1) und mindestens einem Schwenkelement (3), die jeweils an einem ihrer Enden mittels eines Gelenks verbunden sind, wobei eine Biegefeder (11), die mit einem dieser Elemente (1, 3) einstückig ist, zumindest in der Schließposition auf dem anderen Element (3, 1) aufliegt, um dieses elastisch in dieser Schließposition zu halten, dadurch gekennzeichnet, dass es die folgenden Schritte umfasst:
    - Verwenden eines Bandmaterials (2), dessen Steifigkeit derjenigen entspricht, die für die Feder (11) gewünscht wird,
    - es wird, mittels Stanzen, ein Rohling (1', 3') eines jeden dieser Elemente (1, 3) realisiert, so dass auf jedem von diesen mindestens zwei Längsschenkel (5) ausgebildet werden, und auf dem Hauptelement (1) werden zwei Aussparungen (9) ausgebildet, die innerhalb der zwei Schenkel (5) liegen und die zwischen diesen eine mittige Biegefeder (11) ausbilden,
    - ausschließlich die Enden dieser Schenkel (5, 13) werden einem Glühen unterzogen, so dass ermöglicht wird, diese zu rollen,
    - die Steifigkeit dieser Schenkel (5, 13) wird erhöht, und zwar indem man mindestens eine Rippe (20, 22) entlang deren Längsachse realisiert.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass es einen Schritt aufweist, in dessen Verlauf man ein Rohband (12) ausgehend von einem Bandmaterial erstellt, das aus einem aufgerollten Band (2) besteht, dessen Breite einer der Abmessungen des zu realisierenden Elementes entspricht, wobei jeder der Rohlinge (1', 3'), die das Rohband (12) bilden, mit den Rohlingen, die sich benachbart zu diesen befinden, mittels mindestens einer Verbindungslasche (4) verbunden ist.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass die Rohlinge (1', 3') derart angeordnet sind, dass ihre Längsachse (xx') senkrecht zur Längsachse (yy') des Rohbandes (12) orientiert ist.
  4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Rohband (12) entlang seiner Längsachse (yy') vor Heizeinrichtungen (P2) vorbeigeführt wird, die in an seinen Transversalkanten befindlichen Zonen (10) lokalisiert sind, so dass auf mindestens einem Längsband (10) des Rohbandes (12) eine Glühoperation durchgeführt wird.
  5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die lokalisierten Heizeinrichtungen aus einem Laserstrahlgenerator (P2) bestehen.
  6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass, nach der Beheizungsphase (II), eine Einrolloperation (III) am Ende der Elementschenkel durchgerührt wird, so dass Haspen (5, 7, 15, 8) gebildet werden.
  7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass zwei Laschen (13) eines selben Endes eines Schwenkelementes (3) so eingerollt werden, dass eine doppelte Haspel (15) gebildet wird, und zwar eine innere Haspel (15a), die dazu dient, eine mit dem Hauptelement (1) gemeinsame Drehachse (16) aufzunehmen, und eine externe Haspel (15b), die dazu dient, eine Anschlagachse (18) aufzunehmen.
  8. Verfahren nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, dass es einen Schritt aufweist, der darin besteht, das Ende des Schenkels, sobald dieses eingerollt wurde, auf dem Element zu verschweißen, auf welchem es ausgebildet ist.
  9. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass dieses Verschweißen mittels eines Laserstrahlgenerators ausgeführt wird.
  10. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es einen Schritt (IV) nach der Glühoperation (II) beinhaltet, in dessen Verlauf auf den Schenkeln (5, 13) der Haupt- (1) und Schwenkelemente (3) Versteifungslängsrippen (20, 22) ausgebildet werden.
  11. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es eine letzte Phase (V) aufweist, in deren Verlauf die Verbindungslaschen (4) der Elemente entfernt werden.
EP03750804A 2002-07-11 2003-07-11 Verfahren zur herstellung einem automatischen verschluss für ein uhrarmband Expired - Lifetime EP1531696B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0208750A FR2842081B1 (fr) 2002-07-11 2002-07-11 Fermoir automatique pour bracelet-montre
FR0208750 2002-07-11
PCT/FR2003/002208 WO2004006710A1 (fr) 2002-07-11 2003-07-11 Fermoir automatique pour bracelet-montre

Publications (2)

Publication Number Publication Date
EP1531696A1 EP1531696A1 (de) 2005-05-25
EP1531696B1 true EP1531696B1 (de) 2010-03-03

Family

ID=29763753

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03750804A Expired - Lifetime EP1531696B1 (de) 2002-07-11 2003-07-11 Verfahren zur herstellung einem automatischen verschluss für ein uhrarmband

Country Status (9)

Country Link
US (1) US7337541B2 (de)
EP (1) EP1531696B1 (de)
JP (1) JP4356893B2 (de)
CN (1) CN1668222B (de)
AT (1) ATE459261T1 (de)
AU (1) AU2003269021A1 (de)
DE (1) DE60331551D1 (de)
FR (1) FR2842081B1 (de)
WO (1) WO2004006710A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4806958B2 (ja) * 2005-05-16 2011-11-02 株式会社デンソー 装着構造、装置、及びバンド固定棒
DE102008064459A1 (de) * 2008-12-22 2010-06-24 GM Global Technology Operations, Inc., Detroit Bandeinheit für eine Halteeinrichtung und Halteeinrichtung
FI123401B (fi) * 2011-06-10 2013-03-28 Suunto Oy Solki hihnalle, jossa on joukko paloja
EP3011857B1 (de) * 2014-10-24 2017-03-15 The Swatch Group Management Services AG Armbandverschluss
CH713613B1 (fr) * 2017-03-23 2021-03-15 Bulgari Horlogerie Sa Fermoir à boucle déployante
EP3420839B1 (de) * 2017-06-26 2022-10-05 Rolex Sa Verschluss für armbanduhr
CH717459A1 (fr) * 2020-05-28 2021-11-30 G Et F Chatelain Succursale De Chanel Sarl Fermoir extensible à boucle déployante pour bracelet notamment d'une montre.
US11819096B2 (en) 2020-06-16 2023-11-21 Elc Management Llc Single-piece watch band
EP4159080B1 (de) * 2021-10-01 2024-03-27 Omega SA Verstellbarer armbandverschluss
KR102365825B1 (ko) * 2021-10-07 2022-02-23 안은경 양측에 인장 보강부가 형성되는 팔찌 연결구 제조 방법 및 이에 의해 제조된 팔찌 연결구

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE621286C (de) * 1933-04-11 1935-11-04 Josef Alvera Bandverschluss
US2001216A (en) * 1933-08-24 1935-05-14 Gemex Co Bracelet buckle
US3109229A (en) * 1960-07-01 1963-11-05 Louis V Cataldi Method of manufacturing a cuff link
CH471556A (fr) * 1968-04-22 1969-04-30 Zelcaux Henri Fermoir pour bracelet
US3682603A (en) * 1971-02-03 1972-08-08 Duchess Mfg Corp Watch band and a method for manufacturing the same
US4151014A (en) * 1977-05-31 1979-04-24 Western Electric Company, Inc. Laser annealing
US4405386A (en) * 1982-04-05 1983-09-20 Olin Corporation Process and apparatus for improving cold rollability and/or strip annealability of metals and metal alloys
US5309616A (en) * 1991-06-26 1994-05-10 Do-All J.M.C. Inc. Method of making a catch for jewelry clasp
FR2710503A1 (fr) * 1993-09-29 1995-04-07 Dalacopoulos Alexandre Dispositif de serrage réglable pour bracelets de montres.
FR2735335B1 (fr) * 1995-06-15 1997-08-01 Smh Management Services Ag Fermoir de bracelet a boucle deployante
TW564699U (en) * 1996-11-06 2003-12-01 Smh Man Services Ag Clasp with unfolding buckle
FR2761240B1 (fr) * 1997-03-26 1999-04-23 Chatelain Sa G & F Fermoir de type automatique notamment pour bracelet-montre
EP1027842B1 (de) * 1998-07-02 2010-04-28 Citizen Holdings Co., Ltd. Drehanschlag für faltverschlusselement eines bandförmigen schmuckes
DE60018066T2 (de) * 2000-08-22 2006-01-12 Richemont International S.A. Armbandverschluss

Also Published As

Publication number Publication date
FR2842081B1 (fr) 2004-08-27
ATE459261T1 (de) 2010-03-15
US20070028586A1 (en) 2007-02-08
CN1668222A (zh) 2005-09-14
AU2003269021A1 (en) 2004-02-02
CN1668222B (zh) 2011-09-07
JP4356893B2 (ja) 2009-11-04
WO2004006710A1 (fr) 2004-01-22
US7337541B2 (en) 2008-03-04
EP1531696A1 (de) 2005-05-25
JP2005532133A (ja) 2005-10-27
DE60331551D1 (de) 2010-04-15
FR2842081A1 (fr) 2004-01-16

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