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EP4034946B1 - Verbindungsvorrichtung zwischen gehäuserahmen und schenkel einer armbanduhr - Google Patents

Verbindungsvorrichtung zwischen gehäuserahmen und schenkel einer armbanduhr Download PDF

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Publication number
EP4034946B1
EP4034946B1 EP20771985.7A EP20771985A EP4034946B1 EP 4034946 B1 EP4034946 B1 EP 4034946B1 EP 20771985 A EP20771985 A EP 20771985A EP 4034946 B1 EP4034946 B1 EP 4034946B1
Authority
EP
European Patent Office
Prior art keywords
connector
case middle
attachment piece
contact
case
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.)
Active
Application number
EP20771985.7A
Other languages
English (en)
French (fr)
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EP4034946A1 (de
Inventor
Dohan Schlichtig
Jérôme Grosjean
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 Manufacture Horlogere Suisse
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 Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Publication of EP4034946A1 publication Critical patent/EP4034946A1/de
Application granted granted Critical
Publication of EP4034946B1 publication Critical patent/EP4034946B1/de
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Anticipated expiration legal-status Critical

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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
    • G04B37/00—Cases
    • G04B37/14—Suspending devices, supports or stands for time-pieces insofar as they form part of the case
    • 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
    • G04B37/14—Suspending devices, supports or stands for time-pieces insofar as they form part of the case
    • G04B37/1486—Arrangements for fixing to a bracelet
    • 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

Definitions

  • the invention relates to a method of fixing a horn to a caseband of a watch, a caseband-horn connection device.
  • the document CH 708815 relates to a covering element for a case middle of a wristwatch.
  • the covering element is in the form of a separate cover plate fixed to the case middle of the wristwatch and which at least partially covers a connection area between a strand of a bracelet and the case middle of the watch.
  • the document EP 0466655 relates to a watch case and a device for attaching a bracelet to the watch case.
  • the case middle has one or two recesses arranged to receive the end of each bracelet strand.
  • the ends of the bracelet are held by attachment means, consisting of claws or recesses, corresponding to notches or protrusions arranged near the ends of the bracelet strands, and which are arranged on extensions of the case back or on intermediate parts secured to the case back or the case middle.
  • the document EP 0197416 relates to an assembly consisting of a watch case element and a bracelet comprising at least one strand.
  • the bracelet strand is made of a first thermoplastic plastic material.
  • the watch case element is made of a second thermoplastic plastic material having a melting temperature higher than the melting temperature of the first plastic material.
  • the watch case element comprises a part surrounding at least one end of the strand and being integral with this end.
  • undercut groove we mean a groove whose shape prevents direct demolding of solid material filling it, even partially.
  • solidary we mean that one element (e.g. the attachment to at least one horn) is irreversibly linked by contact to another element (e.g. the case).
  • the fusion of the part of the first connector is carried out by ultrasound.
  • ultrasound is meant a longitudinal sound wave whose frequency is in a range from 16 to 10000 kHz, preferably in a range from 16 to 5000 kHz, more preferably in a range from 16 to 1000 kHz, most preferably in a range from 16 to 70 kHz.
  • the method comprises applying a compressive force between the attachment and the case middle brought into contact in order to fill, at least partially, the one or more intermediate cavities by displacement of the molten material.
  • the first connector comprises a tenon and the second connector comprises a mortise.
  • the engagement of the first connector of the fastener with the second connector of the case may be guided by the tenon and the mortise.
  • the first connector comprises two or more tenons and the second connector comprises two or more mortises.
  • the engagement of the first connector of the fastener with the second connector of the case may be guided by the tenons and the mortises.
  • the method comprises filling, at least partially, with the molten material, one or more buffer cavities present between the first connector and the second connector when they are in contact.
  • a second aspect of the invention relates to a caseband-lug connection device for a watch case comprising a fastener to at least one lug comprising a first connector and a caseband comprising a second connector having an undercut groove.
  • the first connector is configured to cooperate with the second connector to fix the fastener to the caseband.
  • the first connector and the second connector are configured to be brought into contact such that one or more intermediate cavities are formed between the undercut groove and the first connector.
  • the one or more intermediate cavities are configured to allow the at least partial filling thereof by displacement of the molten material coming from a portion of the first connector.
  • the fastener and the caseband are configured to be made integral by the solidification of the molten material.
  • the portion of the first connector is configured to be ultrasonically fused.
  • the first connector particularly the part of the first connector, is (substantially) made of plastic.
  • the clip is made of plastic.
  • the first connector comprises a tenon and the second connector comprises a mortise, the mortise being configured to guide the tenon when the first connector of the fastener is brought into contact with the second connector of the case.
  • the first connector includes two or more tenons and the second connector includes two or more mortises, the mortises being configured to guide the tenons when engaging the first connector of the fastener with the second connector of the case.
  • the device preferably includes one or more buffer cavities between the first connector and the second connector when they are in contact.
  • the first connector comprises one or more projecting deflectors such that the movement of the molten material occurs substantially only towards the one or more intermediate cavities.
  • the attachment comprises four horns.
  • case middle 2 assembly - attached to at least one horn 4 (hereinafter case middle-horn assembly) according to one embodiment of the invention is described.
  • the case middle 2 is an element of a watch case (partially shown) used to protect the watch movement, for example, from dust, moisture, shocks, etc. This is the middle part of the watch case that accommodates the watch movement.
  • the case middle 2 is circular. However, other shapes are suitable, such as, for example, a square shape, a rectangular shape, an ellipsoidal shape, etc.
  • the case middle 2 defines a main plane P located halfway up the case middle.
  • the attachment 4 is generally curved and comprises a first connector 8 configured to cooperate with a second connector of the caseband in order to fix the attachment 4 on the caseband.
  • the first connector 8 comprises a circular inner surface 10, perpendicular to the main plane P, configured to be in direct contact with the caseband.
  • the first connector 8 comprises two tenons 12, a “V”-shaped portion 14 and two deflectors 16, all projecting from the circular inner surface 10 inwards (i.e. towards the caseband).
  • the two deflectors 16 are arranged laterally on either side, symmetrically, of the “V”-shaped part 14, as shown in Figs. 2-4 .
  • Each deflector 16 comprises a flat inner abutment surface 20.
  • the deflectors 16 project more than the “V”-shaped portion 14, in particular, the two abutment surfaces 20 project more than the two edges 18.
  • the two abutment surfaces 20 are included in the same plane perpendicular to the plane P.
  • the fastener 4 further comprises a plurality of slots 22, 22', 22".
  • the slot 22 creates a recess around the circumference of the circular interior surface 10.
  • the slots 22', 22" are located at the base of the projecting "V"-shaped portion 14, thereby creating two recesses on the circular interior surface 10.
  • the “V” shaped portion 14 is made of plastic.
  • the horn 4 may be made entirely of plastic.
  • the horn 4 is preferably molded.
  • the caseband 2 comprises a second connector 24 configured to cooperate with the first connector of the attachment to fix the attachment on the caseband 2.
  • the second connector 24 comprises a curved surface 26 radially set back relative to the radially outer surface 27 of the caseband 2, configured to be placed in direct contact with the circular inner surface 10 of the attachment 4.
  • the second connector 24 comprises an undercut groove 28, two mortises 30, and two hollow parts 32, all forming a depression relative to the curved surface 26.
  • the mortises 30 are arranged symmetrically on either side of the second connector 24.
  • the mortises 30 have a cylindrical shape, the base of the cylinder of which is perpendicular to the main plane P. According to other embodiments, the mortises 30 may have other shapes, e.g. parallelepiped, conical, etc.
  • the undercut groove 28 comprises a radially inner flat abutment surface 34.
  • the undercut groove 28 comprises a recess 35 delimited by the radially inner abutment surface 34 and a first radially outer abutment surface 36 as well as a second radially outer abutment surface 38.
  • the two abutment surfaces 36 and 38 are included in the same plane perpendicular to the plane P.
  • the two recessed portions 32 are arranged on either side, symmetrically, of the undercut groove 28, as shown in Figs. 5-6 .
  • Each hollow part 32 comprises a flat internal stop surface 40.
  • the two stop surfaces 40 are included in the same plane, perpendicular to the plane P.
  • the second connector 24 is preferably machined.
  • the second connector is preferably made of steel.
  • Fig. 7 is a sectional view and illustrates the contact of the first connector of the attachment with the second connector 24 of the case 2.
  • the two edges 18 of the “V”-shaped portion 14 are configured to be in direct contact with the radially inner flat abutment surface 34 of the undercut groove, when the middle part 2 is brought into contact with the attachment 4. In other words, the two edges 18 of the “V”-shaped portion 14 are in direct contact when the connectors are positioned one inside the other, at full travel.
  • the “V”-shaped portion 14 partitions the recess 35 into two intermediate cavities 42 delimited by a surface of the “V”-shaped portion 14 as well as the radially inner planar abutment surface 34 and the second radially outer abutment surfaces 36 and 38.
  • the circular inner surface 10 of the horn and the curved surface 26 of the caseband are configured to not be in contact, thus leaving an intermediate space devoid of material.
  • the radially outer surface of the slot 22" is not in contact with the caseband, also leaving an intermediate space devoid of material.
  • the two deflectors 16, in particular the flat inner stop surfaces 20, are configured so as not to be in direct contact with the two recessed portions 32, in particular the inner stop surfaces 40, when the middle part is brought into full travel contact with the horn 4. More particularly, a space between the two deflectors 16 and the two recessed portions 32 persists when the two edges 18 are in contact with the radially inner flat stop surface 34 of the undercut groove 28.
  • the "V" shaped portion 14 is then melted by ultrasound, so as to create a molten material.
  • the molten material moves (flows) into the two intermediate cavities 42.
  • the intermediate cavities 42 are filled, at least partially, by displacement of the molten material (see e.g. Fig. 8 where a portion 44 of an intermediate cavity remains free of material).
  • the intermediate cavities 42 are completely filled.
  • the tenons 12 of the attachment 4 housed in the mortises 30 of the middle 2 make it easier to hold the attachment 4 and middle 2 during fusion of the “V” shaped part 14 by ultrasound.
  • the two deflectors 16 prevent the movement of the molten material from occurring laterally but substantially only towards the intermediate cavities and/or the buffer cavities (see below).
  • the fusion of the “V”-shaped part 14 also allows the circular inner surface 10 of the attachment and the curved surface 26 of the caseband to be brought together and brought into contact.
  • the slots 22, 22', 22" arranged on the attachment 4 cooperate with the curved surface 26 to define several buffer cavities 46.
  • the buffer cavities 46 can be filled, at least partially, with molten material coming from the parts of the attachment 4 and the caseband 2. In this way, molten material, possibly in excess of the intermediate cavities, fills the buffer cavities 46. This makes it possible to prevent molten material from exiting towards the outside through the interface between the two connectors of the horn and the caseband and thus being visible on the edges thereof. The aesthetic appearance is thus preserved.
  • the molten material is then solidified.
  • the undercut cavity is now at least partially filled with solid material: the caseband-horn assembly is secured. Indeed, the removal of the attachment is now sterically prevented by the solid material having flowed from the “V”-shaped portion 14 into the intermediate cavities 42.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Connection Of Plates (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Claims (14)

  1. Verfahren zum Befestigen eines Befestigungsteils mit mindestens einem Horn (4) an einem Mittelteil (2) einer Uhr, wobei das Befestigungsteil einen ersten Verbinder (8) und das Mittelteil einen zweiten Verbinder (24) mit einer hinterschnittenen Nut (28) aufweist, wobei der erste Verbinder mit dem zweiten Verbinder zusammenwirkt, um das Befestigungsteil an dem Mittelteil zu befestigen, und wobei das Verfahren umfasst:
    Anbringen des ersten Verbinders des Befestigungsteils in Kontakt mit dem zweiten Verbinder des Uhrgehäuse-Mittelteils, so dass ein oder mehrere Zwischenhohlräume (42) zwischen der hinterschnittenen Nut und dem ersten Verbinder gebildet werden;
    Schmelzen eines Abschnitts (14) des ersten Verbinders des Befestigungsteils, um ein geschmolzenes Material zu erzeugen;
    zumindest teilweises Füllen des einen oder der mehreren Zwischenhohlräume durch Verdrängung des geschmolzenen Materials; und
    Verfestigung des geschmolzenen Materials, um das Befestigungsteil mit dem Uhrgehäuse-Mittelteil zu verbinden.
  2. Verfahren nach Anspruch 1, wobei der Abschnitt des ersten Verbinders durch Ultraschall geschmolzen wird.
  3. Verfahren nach einem der Ansprüche 1 bis 2, umfassend das Zusammendrücken des Befestigungsteils und des Mittelteils, um den einen oder die mehreren Zwischenhohlräume durch Verdrängung von geschmolzenem Material zumindest teilweise zu füllen.
  4. Verfahren nach einem der Ansprüche 2 bis 3, wobei der erste Verbinder einen Zapfen (12) und der zweite Verbinder ein Zapfenloch (30) aufweist, wobei der Kontakt des ersten Verbinders des Befestigungsteils mit dem zweiten Verbinder des Mittelteils durch den Dübel und die Nut geführt wird.
  5. Verfahren nach Anspruch 4, wobei der erste Verbinder zwei oder mehr Dübel und der zweite Verbinder zwei oder mehr Nuten aufweist, wobei der Kontakt des ersten Verbinders des Befestigungsteils mit dem zweiten Verbinder des Mittelteils durch die Dübel und die Nuten geführt wird.
  6. Verfahren nach einem der Ansprüche 2 bis 5, umfassend das zumindest teilweise Füllen eines oder mehrerer Pufferhohlräume (46), die zwischen dem ersten Verbinder und dem zweiten Verbinder vorhanden sind, wenn der erste und der zweite Verbinder in Kontakt sind, mit geschmolzenem Material.
  7. Mittelteil-Horn-Verbindungsvorrichtung für eine Uhr, umfassend:
    ein Befestigungsteil mit mindestens einem Horn (4), das einen ersten Verbinder (8) umfasst; und
    ein Mittelteil (2) mit einem zweiten Verbinder (24), der eine hinterschnittene Nut (28) aufweist;
    wobei der erste Verbinder so konfiguriert ist, dass er mit dem zweiten Verbinder zusammenwirkt, um das Befestigungsteil an dem Mittelteil zu befestigen;
    wobei der erste Verbinder und der zweite Verbinder so konfiguriert sind, dass sie in Kontakt gebracht werden, so dass ein oder mehrere Zwischenhohlräume (42) zwischen der hinterschnittenen Nut und dem ersten Verbinder gebildet werden;
    wobei der eine oder die mehreren Zwischenhohlräume so konfiguriert sind, dass sie das zumindest teilweise Füllen der Hohlräume durch Verdrängung des geschmolzenen Materials aus einem Abschnitt (14) des ersten Verbinders ermöglichen; und
    wobei das Befestigungsteil und der Mittelteil so konfiguriert sind, dass sie durch Verfestigung des geschmolzenen Materials fest verbunden werden.
  8. Mittelteil-Horn-Verbindungsvorrichtung nach Anspruch 7, wobei der Abschnitt des ersten Verbinders so konfiguriert ist, dass er durch Ultraschall geschmolzen wird.
  9. Mittelteil-Horn-Verbindungsvorrichtung nach einem der Ansprüche 7 bis 8, wobei der erste Verbinder aus Kunststoff besteht.
  10. Mittelteil-Horn-Verbindungsvorrichtung nach einem der Ansprüche 7 bis 9, wobei der erste Verbinder einen Dübel (12) und der zweite Verbinder eine Nut (30) umfasst, wobei die Nut so konfiguriert ist, dass es den Dübel führt, wenn der erste Verbinder des Befestigungsteils in Kontakt mit dem zweiten Verbinder des Mittelteils gebracht wird.
  11. Mittelteil-Horn-Verbindungsvorrichtung nach Anspruch 10, wobei der erste Verbinder zwei oder mehr Dübel und der zweite Verbinder zwei oder mehr Nuten umfasst, wobei die Nuten so konfiguriert sind, dass sie die Dübel führen, wenn der erste Verbinder des Befestigungsteils in Kontakt mit dem zweiten Verbinder des Mittelteils gebracht wird.
  12. Mittelteil-Horn-Verbindungsvorrichtung nach einem der Ansprüche 7 bis 11, mit einem oder mehreren Tupferhohlräumen (46) zwischen dem ersten Verbinder und dem zweiten Verbinder, wenn diese in Kontakt sind.
  13. Mittelteil-Horn-Verbindungsvorrichtung nach einem der Ansprüche 7 bis 12, wobei der erste Verbinder einen oder mehrere vorstehende Ablenker (16) umfasst, so dass die Verschiebung von geschmolzenem Material im Wesentlichen nur in Richtung des einen oder der mehreren Zwischenhohlräume erfolgt.
  14. Mittelteil-Horn-Verbindungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Anbauteil vier Hörner umfasst.
EP20771985.7A 2019-09-24 2020-08-21 Verbindungsvorrichtung zwischen gehäuserahmen und schenkel einer armbanduhr Active EP4034946B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19199357 2019-09-24
PCT/EP2020/073474 WO2021058213A1 (fr) 2019-09-24 2020-08-21 Dispositif de connexion carrure-corne pour une montre

Publications (2)

Publication Number Publication Date
EP4034946A1 EP4034946A1 (de) 2022-08-03
EP4034946B1 true EP4034946B1 (de) 2025-03-05

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EP20771985.7A Active EP4034946B1 (de) 2019-09-24 2020-08-21 Verbindungsvorrichtung zwischen gehäuserahmen und schenkel einer armbanduhr

Country Status (8)

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US (1) US12153381B2 (de)
EP (1) EP4034946B1 (de)
JP (1) JP7344371B2 (de)
KR (1) KR102736552B1 (de)
CN (1) CN114430813A (de)
FI (1) FI4034946T3 (de)
TW (1) TWI732666B (de)
WO (1) WO2021058213A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4202571A1 (de) * 2021-12-23 2023-06-28 ETA SA Manufacture Horlogère Suisse Tragbarer gegenstand mit einem gehäusemittelteil ohne befestigungshörner und einem abnehmbaren armband

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2579780B1 (fr) 1985-04-02 1987-06-12 Ebauchesfabrik Eta Ag Ensemble constitue d'un element de boite de montre et d'un bracelet
CH661635GA3 (en) * 1985-08-21 1987-08-14 Contempo Products Watch case formed of two components welded together by ultrasound
EP0284899B1 (de) * 1987-03-23 1991-01-16 Eta SA Fabriques d'Ebauches Uhrengehäuse, Einheit zu dessen Herstellung und Verfahren zum Bauen dieser Einheit
CH668159GA3 (en) * 1987-03-23 1988-12-15 Watch case
CH674604B5 (de) * 1988-07-19 1990-12-28 Ebauchesfabrik Eta Ag
EP0466655A1 (de) 1990-07-13 1992-01-15 Isafrance Uhrengehäuse und Vorrichtung zur Befestigung eines Armbandes
EP1104894A1 (de) * 1999-12-01 2001-06-06 Eta SA Fabriques d'Ebauches Armbanduhr
JP3800941B2 (ja) 2000-09-26 2006-07-26 カシオ計算機株式会社 電子腕時計
CH698652B1 (fr) * 2004-11-09 2009-09-30 Hart Case Corp Mr Hartzband Pa Dispositif de fixation de bracelets pour montres et bijoux.
CH700636A1 (de) * 2009-03-19 2010-09-30 Richemont Int Sa Befestigungsvorrichtung für Armbänder.
EP2322997B1 (de) * 2009-11-17 2015-07-22 Tissot S.A. Tragbares Objekt mit austauschbarem Armband
US8240011B2 (en) * 2010-02-17 2012-08-14 Paul Hartzband Device for fastening interchangeable watchstraps with sliding lock mechanism
US9388835B2 (en) * 2012-11-13 2016-07-12 Woodwelding Ag Method for connecting parts relative to one another
CH708815B1 (fr) 2013-11-06 2017-12-29 The Swatch Group Man Services Ag Elément d'habillage pour une carrure d'une montre-bracelet.
FR3021128B1 (fr) * 2014-05-14 2017-10-20 Kevin Oualli Montre-bracelet a cornes et bracelet echangeables
EP2985661A1 (de) 2014-08-12 2016-02-17 ETA SA Manufacture Horlogère Suisse Verkleidungselement für ein armbanduhrgehäuse
WO2017060842A1 (fr) * 2015-10-06 2017-04-13 Lvmh Swiss Manufactures Sa Boite de montre comportant des cornes amovibles
CH711611A1 (en) 2015-10-06 2017-04-13 Tag Heuer - Swiss Mft Sa Watch case with removable horns.
US10219591B2 (en) * 2016-03-21 2019-03-05 Apple Inc. Attachment system for an electronic device
EP3422118B1 (de) * 2017-06-30 2020-02-26 Montres Breguet S.A. Vorrichtung zum befestigen eines armbands
EP3473127B1 (de) * 2017-10-20 2021-10-06 Montres Breguet S.A. Vorrichtung zum befestigen eines armbands
JP6863885B2 (ja) * 2017-12-22 2021-04-21 カシオ計算機株式会社 バンドおよび時計

Also Published As

Publication number Publication date
KR20220050216A (ko) 2022-04-22
CN114430813A (zh) 2022-05-03
US12153381B2 (en) 2024-11-26
JP2022546516A (ja) 2022-11-04
TWI732666B (zh) 2021-07-01
TW202113514A (zh) 2021-04-01
WO2021058213A1 (fr) 2021-04-01
US20220276611A1 (en) 2022-09-01
EP4034946A1 (de) 2022-08-03
KR102736552B1 (ko) 2024-11-29
JP7344371B2 (ja) 2023-09-13
FI4034946T3 (fi) 2025-06-20

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