EP0549978B1 - Procédé pour l'assemblage d'une glace sur une boíte de montre et pièce d'horlogerie comprenant des moyens de positionnement d'une glace sur une boíte - Google Patents

Procédé pour l'assemblage d'une glace sur une boíte de montre et pièce d'horlogerie comprenant des moyens de positionnement d'une glace sur une boíte Download PDF

Info

Publication number
EP0549978B1
EP0549978B1 EP92121593A EP92121593A EP0549978B1 EP 0549978 B1 EP0549978 B1 EP 0549978B1 EP 92121593 A EP92121593 A EP 92121593A EP 92121593 A EP92121593 A EP 92121593A EP 0549978 B1 EP0549978 B1 EP 0549978B1
Authority
EP
European Patent Office
Prior art keywords
notch
crystal
case
caseband
onto
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
EP92121593A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0549978A1 (fr
Inventor
Yves Meystre
Olivier Koch
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
Ebauchesfabrik ETA AG
Original Assignee
Ebauchesfabrik ETA AG
Eta SA Fabriques dEbauches
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 Ebauchesfabrik ETA AG, Eta SA Fabriques dEbauches filed Critical Ebauchesfabrik ETA AG
Publication of EP0549978A1 publication Critical patent/EP0549978A1/fr
Application granted granted Critical
Publication of EP0549978B1 publication Critical patent/EP0549978B1/fr
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
    • G04B37/00—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
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
    • G04B39/02—Sealing crystals or glasses
    • G04B39/025—Sealing crystals or glasses without special sealing parts

Definitions

  • the present invention relates to a method for assembling a crystal on a watch case with a predetermined relative angular positioning.
  • It also relates to a timepiece comprising means for positioning an ice cream on a box.
  • the invention relates assembly and positioning of a glass plastic on a watch case made of a material of the same type, the glass being thermo-welded on the box by a technique such as ultrasonic welding.
  • the glass is integral a ring provided with a clearance in which comes engage a protrusion of a seal placed between the ring and the middle of the box.
  • Japanese patent application published after examination under number 53-25261 instead provides an example of simple but apparent system.
  • the ice plastic which carries on an internal annular face a graduation to serve at the same time as a dial, is angularly positioned relative to the box in plastic and to the movement of the watch it makes part, thanks to two opposite projecting parts of which this ice is provided and which each engage between two horns of the box.
  • US Patent No. 4,229,936 relates to a set including a watch case and a bracelet plastic which are made in one piece and in which the box is designed to receive a module digital watch.
  • module control box present on one of its sides of the thicker parts than the rest, which extend axially and form protuberances external and internal.
  • the internal protuberances which penetrate into corresponding grooves of the module when it is placed in the box allow no only act on the contacts that are in these grooves but also to maintain the module in a determined angular position.
  • This document also indicates how a mirror can be fixed on the box by through a headdress but there is no question of angularly position this glass relative to the box and module.
  • the present invention therefore aims to provide a process for assembling an ice cream on a box of watch and a timepiece provided with means of angular positioning of this glass on the box free from the aforementioned defects.
  • the coin timepiece according to the invention comprises a box 1 comprising a middle part 2 and a bezel 4 produced in this example in one and the same piece and forming a whole monobloc.
  • This timepiece also has a crystal 6 which is mounted on the box 1.
  • the glass 6 and the box 1 in this example are made of materials heat-sealable thermoplastics. Ice 6 is made for example in a transparent acrylic resin (PMMA) commonly known as "Plexiglas".
  • PMMA transparent acrylic resin
  • the box as for it is made of one of the materials designated by the abbreviations ABS, ASA, or SAN. These materials correspond respectively to an acryl butadiene styrene, to an acryl ester and to a styrene acryl nitrile. Enter here glass 6 and box 1 is interposed a dial 8.
  • Glass 6 has a chamfered peripheral edge 10 flaring outwards and intended to engage in a circular groove 12 ( Figures 1 and 4) formed in box 1.
  • edge 10 is intended to be thermo-welded on the box 1, in particular by an ultrasound technique.
  • the glass 6 has a notch of positioning 14 constituted at least in its part upper by a V-groove which extends radially to the glass 6 and which is formed in the edge 10.
  • This notch 14 has at least in its part superior an isosceles triangle shape presenting a vertex angle A (figure 3) having a chosen value between 85 ° and 95 °. Preferably, the angle A has a value of 90 °.
  • the notch 14 is therefore formed in a radial position outermost on edge 10 and it opens out laterally, externally and internally by compared to ice 6.
  • the box 1 has a middle part 2 which is extended by horns 18 allowing the attachment of a bracelet not shown and which has a bottom 20.
  • the box 1 has a groove or circular groove 12 intended to form a zone welding with the edge 10 of the glass 6.
  • the box 1 comprises a positioning protuberance 22 formed on this box, and in particular on its middle 2.
  • This protuberance 22 which is produced in the groove or groove 12 at least partly has a form of isosceles triangle with an angle at the vertex B (figure 5) approximately 80 °.
  • FIG. 6 represents the glass 6 positioned on the box 1 before the welding operation of these two elements one over the other.
  • the protuberance 22 which presents at least in its part upper a bevel shape extends towards the glass 6 of normal to box 1.
  • notch 14 flares next to the box 1.
  • the mounting of the glass 6 on the box 1 is made by positioning the glass 6 above from box 1, then introducing edge 10 into the groove or groove 12.
  • the glass 6 is turned in a clockwise or anti-clockwise rotation until the notch 14 comes into coincidence with the protrusion 22 and adjusts to it.
  • Figure 1 shows the timepiece assembled with the notch 14 and the protrusion 22 forming a fusion zone F. We therefore understand that in this state, the notch 14 and the protrusion 22 are welded one to the other.
  • the fusion zone extends annularly over the timepiece since edge 10 is on all of its circumference thermo-welded to the middle 2, in the groove or groove 12. This fusion obtained by welding the two materials form means for fixing the glass 6 to box 1.
  • the notch 14 and the protrusion 22 form means of positioning which in this timepiece make therefore an integral part of the aforementioned fixing means.
  • the assembly method according to the invention is the following.
  • a protuberance 22 which, as explained, is shape corresponding to the notch 14, namely a triangle isosceles, and which is shaped to be able to engage in this one.
  • This process as well as the means of the invention which just described have turned out after many tests, ensure perfect angular positioning of the ice on the box, without any of these components be visible from the outside of the finished part, for example from the top of the ice.
  • this invention is simple and inexpensive, since the notch 14 and the protrusion 22 can be performed without operation additional manufacturing, but only during molding, for example during injection operations ice and box respectively.
  • the glass provided with its notch 14 can fit on boxes without protuberance, which allows better adaptability and excellent flexibility assembly stations in manufacturing.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electric Clocks (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Packaging Frangible Articles (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Microscoopes, Condenser (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
EP92121593A 1991-12-28 1992-12-18 Procédé pour l'assemblage d'une glace sur une boíte de montre et pièce d'horlogerie comprenant des moyens de positionnement d'une glace sur une boíte Expired - Lifetime EP0549978B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3860/91A CH683482B5 (fr) 1991-12-28 1991-12-28 Procédé pour l'assemblage d'une glace sur une boîte de montre, pièce d'horlogerie comprenant des moyens de positionnement d'une glace sur une boîte, et glace destinée à équiper une telle pièce.
CH3860/91 1991-12-28

Publications (2)

Publication Number Publication Date
EP0549978A1 EP0549978A1 (fr) 1993-07-07
EP0549978B1 true EP0549978B1 (fr) 1998-05-27

Family

ID=4265030

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92121593A Expired - Lifetime EP0549978B1 (fr) 1991-12-28 1992-12-18 Procédé pour l'assemblage d'une glace sur une boíte de montre et pièce d'horlogerie comprenant des moyens de positionnement d'une glace sur une boíte

Country Status (12)

Country Link
EP (1) EP0549978B1 (enrdf_load_stackoverflow)
JP (1) JPH05264750A (enrdf_load_stackoverflow)
KR (1) KR930013896A (enrdf_load_stackoverflow)
CN (1) CN1037377C (enrdf_load_stackoverflow)
AT (1) ATE166731T1 (enrdf_load_stackoverflow)
AU (1) AU665966B2 (enrdf_load_stackoverflow)
BR (1) BR9205175A (enrdf_load_stackoverflow)
CA (1) CA2084953A1 (enrdf_load_stackoverflow)
CH (1) CH683482B5 (enrdf_load_stackoverflow)
DE (1) DE69225687D1 (enrdf_load_stackoverflow)
MX (1) MX9207262A (enrdf_load_stackoverflow)
TW (1) TW223684B (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1046967B1 (fr) * 1999-04-22 2007-03-28 ETA SA Manufacture Horlogère Suisse Procédé d'assemblage d'un cercle d'encageage dans une boîte de montre et cercle d'encageage satisfaisant à ce procédé
EP1046968B1 (fr) 1999-04-22 2008-11-26 ETA SA Manufacture Horlogère Suisse Fixation réciproque d'une glace, d'un cadran et d'un cercle d'encageage pour une pièce d'horlogerie
JP5493527B2 (ja) 2009-07-14 2014-05-14 セイコーエプソン株式会社 無線機能付き時計
EP2579106A1 (fr) 2011-10-04 2013-04-10 ETA SA Manufacture Horlogère Suisse Formage de composant d'horlogerie transparent monobloc
EP2584413B1 (fr) * 2011-10-21 2014-08-13 ETA SA Manufacture Horlogère Suisse Procédé de fixation d'une glace sur une carrure d'une boîte de montre
JP5741734B2 (ja) * 2014-03-06 2015-07-01 セイコーエプソン株式会社 無線機能付き時計
US9977464B2 (en) 2014-08-27 2018-05-22 Apple Inc. Sapphire cover for electronic devices
EP3293587B1 (fr) * 2016-09-09 2020-02-19 Montres Tudor S.A. Glace de montre
CN106298685B (zh) * 2016-09-29 2019-01-04 中国船舶重工集团公司第七一九研究所 一种采用超声波焊接的电子芯片封装结构
KR101893166B1 (ko) * 2017-04-28 2018-08-29 엘지전자 주식회사 이동 단말 모듈 및 워치형 이동 단말기

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2222911A (en) * 1938-10-10 1940-11-26 Morf Ernest Watch crystal
CH310554A (fr) * 1953-04-21 1955-10-31 Froidevaux Andre Boîtier d'instrument de mesure, notamment de montre.
US2871654A (en) * 1954-04-14 1959-02-03 Bulova Watch Co Inc Waterproof watch-case
CH356414A (fr) * 1959-08-08 1961-08-15 Schlunegger Paul Verre facetté
DE7000980U (de) * 1970-01-13 1970-04-23 Blessing Werke Kg Uhr
DE7004514U (de) * 1970-02-10 1970-06-18 Richard Hoerl Uhren Juwelen Ku Glasdeckel fuer wand- und tischuhren.
US4229936A (en) * 1977-04-19 1980-10-28 Fairchild Camera And Instrument Corporation Low-cost watch case and band
CH650894GA3 (enrdf_load_stackoverflow) * 1982-08-12 1985-08-30 Ebauchesfabrik Eta Ag
IT8320781U1 (it) * 1983-02-11 1984-08-11 Barbieri Raul Orologio da parete, componibile
CH671671B5 (enrdf_load_stackoverflow) * 1988-03-23 1990-03-30 Ebauchesfabrik Eta Ag
CN1026620C (zh) * 1989-02-17 1994-11-16 西铁城钟表株式会社 塑料钟表侧与塑料挡风玻璃的固定方法

Also Published As

Publication number Publication date
BR9205175A (pt) 1993-06-29
MX9207262A (es) 1993-06-01
TW223684B (enrdf_load_stackoverflow) 1994-05-11
CH683482B5 (fr) 1994-09-30
AU3049292A (en) 1993-07-01
CN1078050A (zh) 1993-11-03
KR930013896A (ko) 1993-07-22
DE69225687D1 (de) 1998-07-02
AU665966B2 (en) 1996-01-25
ATE166731T1 (de) 1998-06-15
CA2084953A1 (en) 1993-06-29
EP0549978A1 (fr) 1993-07-07
JPH05264750A (ja) 1993-10-12
CN1037377C (zh) 1998-02-11
CH683482GA3 (fr) 1994-03-31

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