EP0081464A1 - Manufacturing method for metallic wrist strap made of pivotally connected links - Google Patents

Manufacturing method for metallic wrist strap made of pivotally connected links Download PDF

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Publication number
EP0081464A1
EP0081464A1 EP82810521A EP82810521A EP0081464A1 EP 0081464 A1 EP0081464 A1 EP 0081464A1 EP 82810521 A EP82810521 A EP 82810521A EP 82810521 A EP82810521 A EP 82810521A EP 0081464 A1 EP0081464 A1 EP 0081464A1
Authority
EP
European Patent Office
Prior art keywords
frame
elements
parts
manufacturing
welded
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.)
Granted
Application number
EP82810521A
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German (de)
French (fr)
Other versions
EP0081464B1 (en
Inventor
Jean-Claude Lenherr
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.)
NOVAVIT SA
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NOVAVIT 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 NOVAVIT SA filed Critical NOVAVIT SA
Priority to AT82810521T priority Critical patent/ATE21806T1/en
Publication of EP0081464A1 publication Critical patent/EP0081464A1/en
Application granted granted Critical
Publication of EP0081464B1 publication Critical patent/EP0081464B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • A44C5/02—Link constructions
    • A44C5/025—Link constructions with links threaded on a band
    • A44C5/027—Link constructions with links threaded on a band the band also made of links
    • 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
    • A44C5/02—Link constructions
    • A44C5/10—Link constructions not extensible
    • A44C5/105—Link constructions not extensible with links made of one piece and linked together by one connecting element

Definitions

  • the present invention aims to remedy this drawback. It is based on the somewhat surprising observation that, instead of performing spot welding in the conventional way (consisting in using a high current intensity, of the order of 100 to 200 amperes for a relatively long time, of the order of the second, which produces a strong heating throughout the mass of the parts to be welded) spot welding is carried out by capacitor discharge (which allows working with much higher intensities - for example 100 times more large - but for a much shorter period - for example 100 times smaller), the formation of fusion marks on the visible face of the decorative pieces is completely avoided, no doubt because the rise in temperature elsewhere than in the welding area, remains moderate due to the very short duration of the operation.
  • the subject of the present invention is, on the one hand, a metallic bracelet according to claim 1 and, on the other hand, a method of manufacturing such a bracelet, according to claim 3.
  • the bracelet includes a frame, in stainless steel. dable for example, which is formed by a series of identical elements 1, la, lb, each having three rolled parts 2, 3 and 4 each defining a cylindrical passage intended to receive a pin 5a, 5b, used to assemble the elements 1, la, lb and pivot hinge between them. To this end, the pins 5 can be driven out in the lateral parts 3 and 4 and pass freely through the middle parts 2.
  • the elements such as 1 are flat and intended to each receive on their outer face (relative to the wrist) a piece of trim 6 and, on their opposite face, a piece of trim 7. These parts 6, 7 are shaped to completely cover the two main faces of the elements such as 1. These trim parts are either made of precious metal or coated therewith. In the example according to fig. 2, we indicated the gold plating at 8 and 9.
  • the parts 6 and 7 are placed in the correct position on the armature placed flat, then these parts are fixed to the armature by spot welding by discharge of capacitor, by applying to the visible surfaces of parts 6 and 7 electrodes between which a very high current is passed - of the order of 10,000 to 20,000 amperes, for example 14,000 - during the very short time of discharge of a capacitor, of the order of 6 to 16 milliseconds, for example around 10 milliseconds.

Landscapes

  • Adornments (AREA)
  • Clamps And Clips (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

1. A process for the manufacture of a metal bracelet consisting of links connected together and comprising a frame made up of elements (1) connected together, and ornamental pieces (6, 7) each welded to one of these elements (1) so as to cover the two main faces of this frame, characterised in that the ornamental pieces (6, 7) are welded to the interconnected elements (1) of the frame by spot welding using the discharge from an electrical capacitor between electrodes which are applied to the polished, finished surface of the conspicuous main faces of the two ornamental elements (6, 7) of each frame element (1).

Description

On a déjà cherché à réaliser de différentes façons des bracelets métalliques formés de maillons articulés'entre eux, dont la partie apparente soit formée de pièces décoratives en métal précieux fixées sur une armature en métal précieux. Mais on s'est heurté à la difficulté suivante : Pour réaliser une fixation solide des pièces décoratives sur l'armature, il serait souhaitable de procéder par soudage électrique par points, mais cette opération a l'inconvénient de produire des marques de fusion du métal sur la face apparente de ces pièces décoratives. Lorsque celles-ci sont .suffisamment massives, on peut à la rigueur éliminer plus ou moins bien ces marques par un travail mécanique approprié, mais délicat. S'il s'agit de pièces en plaqué, il est exclu d'enlever ces marques vu la faible épaisseur du placage.We have already sought to achieve in different ways metal bracelets formed of links hinged together, the visible part of which is formed of decorative pieces of precious metal fixed on a precious metal frame. But we encountered the following difficulty: To achieve a solid fixing of the decorative pieces on the frame, it would be desirable to proceed by electric spot welding, but this operation has the disadvantage of producing marks of fusion of the metal. on the visible side of these decorative pieces. When these are sufficiently massive, it is possible to remove these marks more or less well by appropriate mechanical work, but delicate. In the case of plated parts, it is not possible to remove these marks due to the thin thickness of the veneer.

La présente invention vise à remédier à cet inconvénient. Elle est basée sur la constatation quelque peu surprenante que, si au lieu de réaliser la soudure par points de la manière classique (consistant à utiliser une forte intensité de courant, de l'ordre de 100 à 200 ampères pendant un temps relativement long, de l'ordre de la seconde, ce qui produit un fort échauffement dans toute la masse des parties à souder) on effectue la soudure par points par décharge de condensateur (ce qui permet de travailler avec des intensités beaucoup plus fortes - par exemple 100 fois plus grandes - mais pendant une durée beaucoup plus courte - par exemple 100 fois plus petite), on évite complètement la formation de marques de fusion sur la face apparente des pièces décoratives, sans doute du fait que l'élévation de température, ailleurs que dans la zone de soudage, reste modérée en raison de la très courte durée de l'opération.The present invention aims to remedy this drawback. It is based on the somewhat surprising observation that, instead of performing spot welding in the conventional way (consisting in using a high current intensity, of the order of 100 to 200 amperes for a relatively long time, of the order of the second, which produces a strong heating throughout the mass of the parts to be welded) spot welding is carried out by capacitor discharge (which allows working with much higher intensities - for example 100 times more large - but for a much shorter period - for example 100 times smaller), the formation of fusion marks on the visible face of the decorative pieces is completely avoided, no doubt because the rise in temperature elsewhere than in the welding area, remains moderate due to the very short duration of the operation.

La présente invention a pour objet, d'une part, un bracelet métallique selon la revendication 1 et, d'autre part, un procédé de fabrication d'un tel bracelet, conforme à la revendication 3.The subject of the present invention is, on the one hand, a metallic bracelet according to claim 1 and, on the other hand, a method of manufacturing such a bracelet, according to claim 3.

Le dessin annexé illustre, à titre d'exemple, une forme d'exécution du bracelet selon l'invention et une mise en oeuvre du procédé selon l'invention pour la fabrication de ce bracelet.The accompanying drawing illustrates, by way of example, an embodiment of the bracelet according to the invention and an implementation of the method according to the invention for the manufacture of this bracelet.

  • Fig. 1 est une vue en perspective explosée des parties constitutives d'une partie du bracelet, avant leur assemblage.Fig. 1 is an exploded perspective view of the constituent parts of a part of the bracelet, before their assembly.
  • Fig. 2 est une vue en coupe longitudinale médiane partielle du bracelet terminé.Fig. 2 is a view in partial median longitudinal section of the finished bracelet.

Le bracelet comprend une armature, en acier inoxy-. dable par exemple, qui est formée d'une série d'éléments identiques 1, la, lb, présentant chacun trois parties roulées 2, 3 et 4 définissant chacune un passage cylindrique destiné à recevoir une goupille 5a, 5b, servant à assembler les éléments 1, la, lb et de pivot d'articulation entre eux. A cet effet, les goupilles 5 peuvent être chassées dans les parties latérales 3 et 4 et passer librement dans les parties médianes 2.The bracelet includes a frame, in stainless steel. dable for example, which is formed by a series of identical elements 1, la, lb, each having three rolled parts 2, 3 and 4 each defining a cylindrical passage intended to receive a pin 5a, 5b, used to assemble the elements 1, la, lb and pivot hinge between them. To this end, the pins 5 can be driven out in the lateral parts 3 and 4 and pass freely through the middle parts 2.

Hormis les parties 2, 3 et 4, les éléments tels que 1 sont plats et destinés à recevoir chacun sur leur face extérieure (par rapport au poignet) une pièce de garniture 6 et, sur leur face opposée, une pièce de garniture 7. Ces pièces 6, 7 sont conformées pour recouvrir entièrement les deux faces principales des éléments tels que 1. Ces pièces de garniture sont soit en métal précieux, soit en plaqué. Dans l'exemple selon fig. 2, on a indiqué les placages d'or en 8 et 9.Except for parts 2, 3 and 4, the elements such as 1 are flat and intended to each receive on their outer face (relative to the wrist) a piece of trim 6 and, on their opposite face, a piece of trim 7. These parts 6, 7 are shaped to completely cover the two main faces of the elements such as 1. These trim parts are either made of precious metal or coated therewith. In the example according to fig. 2, we indicated the gold plating at 8 and 9.

Lorsque l'armature du bracelet est réalisée par assemblage des éléments 1,, la, lb,. etc. au moyen des goupilles 5a, 5b, etc., on dispose les pièces 6 et 7 en position correcte sur l'armature disposée à plat, puis on fixe ces pièces sur l'armature par soudure par points par décharge de condensateur, en appliquant sur les faces apparentes des pièces 6 et 7 des électrodes entre lesquelles on fait passer un courant de très grande intensité - de l'ordre de 10000 à 20000 ampères, par exemple 14000 - pendant le temps très court de la décharge d'un condensateur, de l'ordre de 6 à 16 millisecondes, par exemple environ 10 millisecondes.When the frame of the bracelet is produced by assembling the elements 1 ,, la, lb ,. etc. by means of pins 5a, 5b, etc., the parts 6 and 7 are placed in the correct position on the armature placed flat, then these parts are fixed to the armature by spot welding by discharge of capacitor, by applying to the visible surfaces of parts 6 and 7 electrodes between which a very high current is passed - of the order of 10,000 to 20,000 amperes, for example 14,000 - during the very short time of discharge of a capacitor, of the order of 6 to 16 milliseconds, for example around 10 milliseconds.

L'expérience montre que, dans ces conditions, le soudage par points des pièces 6, 7 aux éléments tels que 1 de l'armature est tout à fait bon et que la surface apparente de ces pièces n'est pas altérée par le passage du courant pendant ce temps extrêmement court, même s'il s'agit d'un placage d'or. Dans ces conditions, les pièces 6, 7 seront avantageusement en plaqué or laminé.Experience shows that, under these conditions, spot welding of parts 6, 7 to elements such as 1 of the reinforcement is quite good and that the apparent surface of these parts is not altered by the passage of the running during this extremely short time, even if it is a gold plating. Under these conditions, the parts 6, 7 will advantageously be made of laminated gold plated.

Claims (3)

1. Bracelet métallique formé de maillons articulés entre eux, caractérisé en ce qu'il est formé d'une armature en métal commun qui est constituée par des éléments (1) articulés entre eux, et de pièces (6, 7) de garniture faites au moins partiellement en métal noble, qui sont soudées chacune sur un des éléments (1) de l'armature et qui recouvrent les deux faces principales de cette armature.1. Metal bracelet formed of links hinged together, characterized in that it is formed of a common metal frame which is constituted by elements (1) hinged together, and of parts (6, 7) of lining made at least partially of noble metal, which are each welded to one of the elements (1) of the frame and which cover the two main faces of this frame. 2. Bracelet selon la revendication 1, caractérisé en ce que les pièces décoratives (6, 7) sont en plaqué (8, 9).2. Bracelet according to claim 1, characterized in that the decorative pieces (6, 7) are plated (8, 9). 3. Procédé de fabrication d'un bracelet selon la revendication l, caractérisé en ce qu'on soude les pièces de garniture sur les éléments articulés de l'armature par soudage par points par décharge de condensateur.3. A method of manufacturing a bracelet according to claim l, characterized in that the packing pieces are welded to the articulated elements of the frame by spot welding by capacitor discharge.
EP82810521A 1981-12-08 1982-12-03 Manufacturing method for metallic wrist strap made of pivotally connected links Expired EP0081464B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82810521T ATE21806T1 (en) 1981-12-08 1982-12-03 PROCESS FOR MAKING AN ARTICULATED LINK BRACELET.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH784081A CH645523A5 (en) 1981-12-08 1981-12-08 METALLIC BRACELET IN THE SHAPE OF LINKS ARTICULATED TOGETHER AND ITS MANUFACTURING METHOD.
CH7840/81 1981-12-08

Publications (2)

Publication Number Publication Date
EP0081464A1 true EP0081464A1 (en) 1983-06-15
EP0081464B1 EP0081464B1 (en) 1986-09-03

Family

ID=4331202

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82810521A Expired EP0081464B1 (en) 1981-12-08 1982-12-03 Manufacturing method for metallic wrist strap made of pivotally connected links

Country Status (5)

Country Link
EP (1) EP0081464B1 (en)
JP (1) JPS58105707A (en)
AT (1) ATE21806T1 (en)
CH (1) CH645523A5 (en)
DE (1) DE3273064D1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2585931A1 (en) * 1985-08-08 1987-02-13 Orient Watch Co Ltd LINING ELEMENT FOR BRACELET
FR2594306A1 (en) * 1986-02-14 1987-08-21 Omega Sa NON-EXTENSIBLE BRACELET WITH RELATED HINGES
GB2245476A (en) * 1990-06-27 1992-01-08 Lin Sen Yi Watch bracelets
EP0586981A1 (en) * 1992-09-11 1994-03-16 Montres Rado S.A. Wrist watch strap
GB2324022A (en) * 1997-04-10 1998-10-14 Pino Aliprandi Ltd Electroplating watch straps
GB2374516A (en) * 2002-01-02 2002-10-23 Wing Hon Metal Manufactory Ltd Band for a timepiece and a method of manufacturing
US7201020B2 (en) 2003-10-14 2007-04-10 Nike, Inc. Watch band with cover member
US20130055762A1 (en) * 2011-09-01 2013-03-07 Wai-Ho Eddie Leung Watchband Link with Internal Logo
DK179284B1 (en) * 2017-02-22 2018-04-03 As Af 26 Januar 2017 Joints and their use, such as for the manufacture of jewelery or straps, belts or belts for use in clothing or accessories

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010075646A (en) * 2008-09-25 2010-04-08 Four Creators:Kk Connecting mechanism of band

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1073589A (en) * 1963-10-07 1967-06-28 Asea Ab Welding of metal pieces to porous material
GB1238083A (en) * 1969-06-16 1971-07-07
FR2153692A5 (en) * 1971-09-21 1973-05-04 Babcock Atlantique Sa Condenser discharge welding appts - is highly portable for use on site
GB1495853A (en) * 1974-09-25 1977-12-21 Bear Co Ltd Straps for wrist watches
DE2744370A1 (en) * 1977-10-01 1979-04-05 Fischer Artur Fa Wrist band, used as watch strap - consists of flat metal pieces interlocking with pins and grooves
US4266400A (en) * 1979-07-05 1981-05-12 The Bambi Incorporated Wrist watch band and manufacturing method therefor
US4337133A (en) * 1979-06-20 1982-06-29 Bell Telephone Laboratories, Incorporated Hard gold surfaces
EP0064031A1 (en) * 1981-04-25 1982-11-03 Satinor S.A. Metallic bracelet

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1073589A (en) * 1963-10-07 1967-06-28 Asea Ab Welding of metal pieces to porous material
GB1238083A (en) * 1969-06-16 1971-07-07
FR2153692A5 (en) * 1971-09-21 1973-05-04 Babcock Atlantique Sa Condenser discharge welding appts - is highly portable for use on site
GB1495853A (en) * 1974-09-25 1977-12-21 Bear Co Ltd Straps for wrist watches
DE2744370A1 (en) * 1977-10-01 1979-04-05 Fischer Artur Fa Wrist band, used as watch strap - consists of flat metal pieces interlocking with pins and grooves
US4337133A (en) * 1979-06-20 1982-06-29 Bell Telephone Laboratories, Incorporated Hard gold surfaces
US4266400A (en) * 1979-07-05 1981-05-12 The Bambi Incorporated Wrist watch band and manufacturing method therefor
EP0064031A1 (en) * 1981-04-25 1982-11-03 Satinor S.A. Metallic bracelet

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2585931A1 (en) * 1985-08-08 1987-02-13 Orient Watch Co Ltd LINING ELEMENT FOR BRACELET
FR2594306A1 (en) * 1986-02-14 1987-08-21 Omega Sa NON-EXTENSIBLE BRACELET WITH RELATED HINGES
EP0234406A1 (en) * 1986-02-14 1987-09-02 Omega SA Non-expanding bracelet with visible joints
US4781035A (en) * 1986-02-14 1988-11-01 Omega S.A. Non expanding bracelet with visible hinges
GB2245476A (en) * 1990-06-27 1992-01-08 Lin Sen Yi Watch bracelets
EP0586981A1 (en) * 1992-09-11 1994-03-16 Montres Rado S.A. Wrist watch strap
FR2695544A1 (en) * 1992-09-11 1994-03-18 Rado Montres Sa Watch strap.
US5347498A (en) * 1992-09-11 1994-09-13 Montres Rado S.A. Watch bracelet
GB2324022A (en) * 1997-04-10 1998-10-14 Pino Aliprandi Ltd Electroplating watch straps
GB2324022B (en) * 1997-04-10 2000-10-11 Aliprandini P Interlinked watchstrap
GB2374516A (en) * 2002-01-02 2002-10-23 Wing Hon Metal Manufactory Ltd Band for a timepiece and a method of manufacturing
GB2374516B (en) * 2002-01-02 2003-06-04 Wing Hon Metal Manufactory Ltd Band for timepiece and method of manufacturing same
US6964153B2 (en) 2002-01-02 2005-11-15 Wing Hon Metal Manufactory Ltd Components for timepiece and method of manufacturing thereof
US7201020B2 (en) 2003-10-14 2007-04-10 Nike, Inc. Watch band with cover member
US20130055762A1 (en) * 2011-09-01 2013-03-07 Wai-Ho Eddie Leung Watchband Link with Internal Logo
DK179284B1 (en) * 2017-02-22 2018-04-03 As Af 26 Januar 2017 Joints and their use, such as for the manufacture of jewelery or straps, belts or belts for use in clothing or accessories
DK201770133A1 (en) * 2017-02-22 2018-04-03 As Af 26 Januar 2017 Joints and their use, such as for the manufacture of jewelery or straps, belts or belts for use in clothing or accessories

Also Published As

Publication number Publication date
ATE21806T1 (en) 1986-09-15
DE3273064D1 (en) 1986-10-09
JPS58105707A (en) 1983-06-23
EP0081464B1 (en) 1986-09-03
CH645523A5 (en) 1984-10-15

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