EP0111449B1 - Procédé de fabrication d'un élément de boîte de montre, élément de boîte de montre obtenu, et boîte de montre comprenant un tel élément - Google Patents

Procédé de fabrication d'un élément de boîte de montre, élément de boîte de montre obtenu, et boîte de montre comprenant un tel élément Download PDF

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Publication number
EP0111449B1
EP0111449B1 EP83810564A EP83810564A EP0111449B1 EP 0111449 B1 EP0111449 B1 EP 0111449B1 EP 83810564 A EP83810564 A EP 83810564A EP 83810564 A EP83810564 A EP 83810564A EP 0111449 B1 EP0111449 B1 EP 0111449B1
Authority
EP
European Patent Office
Prior art keywords
watch case
glass
fastening means
case element
coating
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
Application number
EP83810564A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0111449A3 (en
EP0111449A2 (fr
Inventor
Paul Gogniat
Eric Loth
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 EP0111449A2 publication Critical patent/EP0111449A2/fr
Publication of EP0111449A3 publication Critical patent/EP0111449A3/fr
Application granted granted Critical
Publication of EP0111449B1 publication Critical patent/EP0111449B1/fr
Expired 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
    • 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
    • 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
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
    • 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
    • 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
    • Y10T29/49584—Watch or clock making having case, cover, or back
    • 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
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5347—Crystal to watch or clock

Definitions

  • the present invention relates to the assembly of the constituent elements of a watch case and it relates more particularly to a method for manufacturing a watch case element comprising on the one hand a crystal, and on the other hand a rigidly secured fixing member to the latter, as well as the element obtained by this process and a watch case comprising this element.
  • the present invention proposes a new method for producing a watch case element comprising a crystal and a fixing member subject to the latter, which allows an easy production of this fixing member, in various materials, which are themselves easy to machine if necessary, and this in any desired shape.
  • the latter also proposes watch case elements manufactured according to the aforementioned method, as well as a watch case incorporating them.
  • a watch case element consists of a lens 1, to which a fixing member 2 is attached.
  • a metal covering 3 is provided, the purpose of which is to ensure masking of the fastening member 2, and to guarantee better resistance of the assembly.
  • the glass 1 can have any desired shape
  • the fixing member 2, constituting an annular heel for fixing the glass can have a corresponding shape.
  • this heel cannot extend over the entire periphery of the glass, but only, for example, along two opposite sides of a glass of rectangular or square shape.
  • FIG. 2 there is shown a glass 4, also provided with metal coating zones 5, at which are fixed fixing pads 6 extending perpendicular to the plane of the glass and forming fixing members.
  • the fastening members 2 or 6 are not manufactured separately, then assembled with ice in an often imperfect manner, as in the prior art, but formed directly on the respective metallic coatings by a process for molding a molten material.
  • the material of the fasteners is compatible with, and has a good affinity for the material of the metal coating, the choice of the material of the fasteners is wide, and most of the metal alloys commonly used in the watchmaking or precision mechanics can be used.
  • the fixing members are made of a metal of the zinc, tin, copper, gold type, in the pure or alloyed state.
  • the metal known under the name zamac which is an alloy of zinc, aluminum, copper and magnesium, or other types of alloys as well.
  • Eutectic alloys are particularly interesting, since the eutectic composition of an alloy leads to a lower melting temperature.
  • the coatings used at the junction between the fixing members and the glass panels can be deposited according to various known methods, such as for example by vacuum metallization or galvanic deposition.
  • These coatings may have several layers, for example a chromium undercoat ensuring adhesion to the glass and masking of the fixing member, to which is superimposed a second layer of a material similar to that of the fixing members. to ensure the attachment of the metal during molding.
  • a chromium undercoat ensuring adhesion to the glass and masking of the fixing member, to which is superimposed a second layer of a material similar to that of the fixing members. to ensure the attachment of the metal during molding.
  • an outer layer of zinc will be used to secure a zamak fastener or gold to secure a gold fastener.
  • a glass 20, 20 ′ is shown in view from below, provided with a peripheral heel 21, 21 ′ which has a variable width so as to be slightly deformable in a radial direction, for example for absorb the stresses during the cooling of the material forming the heel, or those due to differences in coefficients of thermal expansion between the ice and the heel.
  • This variable width can be obtained by providing narrowing in the general shape of the heel, as well as openings 22 (fig. 3), or even by means of notches 22 '(fig. 4) left alternately on each lateral face of the heel. during molding. Of threads 23, 23 'allow to fix the member 21, 21, in a watch case middle.
  • FIG. 5 illustrates yet another variant of the invention, in which inserts 27, constituted for example by threaded steel studs, are partially embedded in a fixing member 28 at the time of its production, for allow it to be anchored in another element of a watch case. Furthermore, it can be seen that the fixing member 28 can be produced on an inclined lower part 29 of the lens 30, with the interposition of a coating 31.
  • the fixing member 33 comprises two adjacent zones, separated by the dotted line 34 and made of different materials.
  • a first layer adjacent to the coating 35 of the glass 36 can be made of tin to ensure good adhesion with the coating 35, while the zone situated below this layer can be made of a bronze having better qualities. mechanical.
  • the line 34 does not correspond to an abrupt separation between the two zones, but to a region of interpenetration of the two neighboring materials.
  • the external part of the fixing member 33 is provided with a cap 37 which can be made of a hard material, or of a precious metal such as gold. This cap, which can therefore have a protective or decorative function can be, for example, attached to the member 33 after its formation, or even already inside the mold used for the manufacture of this member.
  • FIG. 7 is shown schematically an installation allowing the production of the watch case elements of FIGS. 1 or 2.
  • the crystal 1 is placed between two parts 8, 9 of an injection mold, the part 9 comprising a channel 10 the shape of which corresponds to that of the fixing member to be formed.
  • An opening 11 allows this channel to communicate with the outside and to fill it with a molten metallic material.
  • the ice 1 can be heated inside the mold, and all known methods of molding molten material can be used, for example injection under pressure by centrifugation, or molding in a maintained oven. at low pressure, in order to lower the melting point of the materials used.
  • FIG 8 there is shown another aspect of the invention, according to which a fixing member 13 produced as indicated above, is used not only to secure a lens 14 to the upper part of a component 15 of a watch case, such as a middle or a bezel, but also to seal the assembly.
  • the fixing member 13 the constituent material of which can be chosen so as to be able to closely match the external shape of a housing 16 formed in the part 15, is forcibly engaged in this housing, and its support on the lateral surface of the housing 16 is further improved by a tension ring 17 disposed radially inside the annular fixing member 13.
  • the metallization 18 of the underside of the crystal extends well heard beyond the tension ring 17.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Adornments (AREA)
  • Joining Of Glass To Other Materials (AREA)
EP83810564A 1982-12-14 1983-12-05 Procédé de fabrication d'un élément de boîte de montre, élément de boîte de montre obtenu, et boîte de montre comprenant un tel élément Expired EP0111449B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7262/82 1982-12-14
CH726282A CH650634GA3 (ko) 1982-12-14 1982-12-14

Publications (3)

Publication Number Publication Date
EP0111449A2 EP0111449A2 (fr) 1984-06-20
EP0111449A3 EP0111449A3 (en) 1984-07-18
EP0111449B1 true EP0111449B1 (fr) 1986-10-29

Family

ID=4322380

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83810564A Expired EP0111449B1 (fr) 1982-12-14 1983-12-05 Procédé de fabrication d'un élément de boîte de montre, élément de boîte de montre obtenu, et boîte de montre comprenant un tel élément

Country Status (7)

Country Link
US (1) US4589886A (ko)
EP (1) EP0111449B1 (ko)
JP (1) JPS59120880A (ko)
KR (1) KR890000083B1 (ko)
CH (1) CH650634GA3 (ko)
DE (1) DE3367288D1 (ko)
HK (1) HK34992A (ko)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH657246GA3 (ko) * 1984-07-12 1986-08-29
CH678680GA3 (en) * 1990-02-20 1991-10-31 Watch glass mounting - has a deposited metal layer between decorative layer and solder to prevent visible effects of soldering
US5251846A (en) * 1990-07-23 1993-10-12 Vehicle Research Corporation Supersonic aircraft shock wave energy recovery system
US7861966B2 (en) * 2005-04-18 2011-01-04 Vehicle Research Corporation Supersonic aircraft footprint spreading control system and method
EP2261757A1 (fr) 2009-06-10 2010-12-15 ETA SA Manufacture Horlogère Suisse Procédé et dispositif de fixation d'une glace à une lunette
JP5824969B2 (ja) * 2011-08-29 2015-12-02 セイコーエプソン株式会社 カバーガラスおよび時計
EP2595008B1 (fr) * 2011-11-17 2015-01-07 Montres Rado S.A. Boîte pour pièce d'horlogerie
JP6150407B1 (ja) * 2016-03-08 2017-06-21 セイコーインスツル株式会社 時計部品、文字板、文字板ユニット、ムーブメントおよび時計

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0097393A1 (fr) * 1982-06-21 1984-01-04 Firma H. Finger Boîte de montre bracelet

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH13597A (fr) * 1896-11-27 1897-07-31 Richard Lagerie Emile Machine à étirer (peigner, carder, défeutrer) les matières textiles
US2468239A (en) * 1943-11-18 1949-04-26 Us Rubber Co Method of bonding rubber to metal
US2597935A (en) * 1946-04-22 1952-05-27 Corning Glass Works Cover glass assembly
US2854815A (en) * 1954-09-24 1958-10-07 Piquerez Ervin Double watch crystal with moisture absorbent and indicating packing
CH519193A (fr) * 1969-03-03 1971-10-29 Centrale S A Fab Boîte de montre étanche avec glace en matière dure
FR2051627A1 (en) * 1969-07-09 1971-04-09 Chapuis Laurent Wrist watch case construction
CH623711B (de) * 1978-12-15 Bbc Brown Boveri & Cie Uhr.
JPS5696267A (en) * 1979-12-28 1981-08-04 Seiko Epson Corp Fixation of cover glass
CH649435GA3 (ko) * 1981-05-22 1985-05-31

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0097393A1 (fr) * 1982-06-21 1984-01-04 Firma H. Finger Boîte de montre bracelet

Also Published As

Publication number Publication date
KR890000083B1 (ko) 1989-03-07
DE3367288D1 (en) 1986-12-04
EP0111449A3 (en) 1984-07-18
KR840007474A (ko) 1984-12-07
HK34992A (en) 1992-05-22
JPS59120880A (ja) 1984-07-12
JPH0253757B2 (ko) 1990-11-19
EP0111449A2 (fr) 1984-06-20
CH650634GA3 (ko) 1985-08-15
US4589886A (en) 1986-05-20

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