EP0082119B1 - Armbanduhrmittelteil und Herstellungsverfahren - Google Patents

Armbanduhrmittelteil und Herstellungsverfahren Download PDF

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Publication number
EP0082119B1
EP0082119B1 EP82810545A EP82810545A EP0082119B1 EP 0082119 B1 EP0082119 B1 EP 0082119B1 EP 82810545 A EP82810545 A EP 82810545A EP 82810545 A EP82810545 A EP 82810545A EP 0082119 B1 EP0082119 B1 EP 0082119B1
Authority
EP
European Patent Office
Prior art keywords
elements
caseband
sides
recess
engaged
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
EP82810545A
Other languages
English (en)
French (fr)
Other versions
EP0082119A1 (de
Inventor
Marc Lederrey
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 EP0082119A1 publication Critical patent/EP0082119A1/de
Application granted granted Critical
Publication of EP0082119B1 publication Critical patent/EP0082119B1/de
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
    • G04B37/00—Cases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/26—Inlaying with ornamental structures, e.g. niello work, tarsia work
    • 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
    • G04B47/00—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece
    • G04B47/04—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece with attached ornaments or amusement apparatus
    • G04B47/042—Fastening of jewels and the like

Definitions

  • the middle parts of known wristwatch cases bear a cap of scratch-resistant material or are made entirely of such material.
  • the cap in question is an expensive and delicate workpiece, because of its shape and the shrinkage that hard materials, in principle sintered, undergo.
  • fixing this cap to the middle part of the box is not easy, if it is to be removable and nevertheless sufficiently strong to avoid accidental separation.
  • the manufacture is even more difficult and costly, because the piece of scratch-resistant material must still have means allowing it to fix a watch movement.
  • such a part, made entirely of hard material is subject to rupture due to impact. It follows that its manufacturer is exposed to having to replace a significant number of whole boxes, to ensure after-sales service worthy of the name.
  • the invention aims to avoid these drawbacks, by protecting the edge of the middle of a wristwatch case by means that are just as effective as the known means, but clearly simpler and therefore less costly.
  • a middle part having the features defined by claim 1 is suitably protected, because the protective elements which line the edge thereof protrude from the latter. They thus keep foreign objects away from the body of the middle part, which can even be made of a relatively soft material, very easily machinable and inexpensive.
  • This protective effect is already achieved by using relatively protruding protective elements, as is apparent from the shape of these elements, which is defined in the characteristic of claim 1.
  • Protective elements emerging from two tenths of a millimeter from the body of the middle give satisfactory results, in particular in the case where a sapphire crystal completely covers the upper face of the middle, as described in the documents, CH-85-641 313, WD-A1-82 / 04134, and WO -A1-82 / 04135 and where the exposed parts of the body of the middle part, above and below the protective elements have a height equal to at most half a millimeter.
  • the surface of the protective elements, which is engaged in a housing of corresponding shape of the body of the middle part is sufficiently large to ensure satisfactory fixing of these elements.
  • the decorative elements could, in fact, be manufactured entirely by stretching, parting off, stamping, folding and polishing, so that after their welding to the neckline of the middle part, the latter was finished.
  • the method of fixing the protective elements defined by claim 2 is particularly simple and very effective.
  • adhesives on the market which resist most chemical agents, including hydrofluoric acid. They also provide an adhesion of 3.5 to 4.5 kilograms-force per square millimeter.
  • the invention is not limited to the protection of the slice of polygonal shoulders, as is apparent from claim 4. Although the implementation of the protective elements is more laborious than in the embodiments defined by the claim 3, these executions are still very interesting because of the reduced cost of said protective elements.
  • the protective elements of the edge of the middle part will be made as defined in claim 5, because they give this middle part a very attractive appearance, especially if its upper face is completely covered by glass, as described in the three documents mentioned above, because, in this case, it is possible to match the appearance of the edge of the middle with that of the edge of the glass.
  • the middle part according to the invention is advantageously manufactured according to the method defined by claim 7. It is, in fact, easy to manufacture cylindrical or spherical elements of hard material with the desired diameter. As the build is raw when they are glued, the manipulations that this last operation involves are not likely to alter it. The same applies to the subsequent grinding of the protective elements. This operation does not affect the body of the middle. Finally, the termination treatments then applied to the body of the middle part, which usually include a final polishing and a surface treatment, no longer affect the protective elements, which are much harder than the body of the middle part and than the means used. to polish the latter.
  • grinding removes a relatively soft material - gold - to leave only encrustations of this material in a hard part - stone - and not vice versa, a very hard material - corundum -, glued to a relatively soft support, in brass, for example.
  • the middle part 1 (Fig. 2) of the watch case shown in Figs. 1 to 3 has its upper face 2 entirely covered by the sapphire crystal 3, which is fixed to the middle part 1 by force engagement in the opening 4 of the latter, with the interposition of a cuff 5, a central plate 6 , transparent, also made of sapphire or made of tempered mineral glass, which is glued under the glass 3.
  • the periphery of the latter carries an opaque decorative frame 7, which determines the appearance of the upper face of the watch, in conjunction with the dial 8, visible inside the frame 7.
  • the glass of the watch shown could naturally also be arranged and fixed to the middle part 1 in one or other of the ways described in Swiss patent applications No. 2858 / 81-8 and 2859 / 81-0.
  • the middle part 1 has a rectangular outline with corners 9 cut at 45 °.
  • the edge 14 of the middle 1 has semicylindrical recesses 15, which extend from one end to the other of these flat faces of the edge 14 of the middle part.
  • the thickness of the usual movements, produced in large series, is currently of the order of magnitude close to 2 mm
  • the dimensions of the recesses 15 can be chosen so as not to allow them to remain, above and below them, only parts of the long sides 12, 13 of the edge 14 of the middle part 1, the height of which does not exceed a few tenths of a millimeter. It will also be noted that these recesses 15 can be machined without difficulty, using a shaped cutter.
  • Rods 16, 17, 18 in transparent monocrystalline corundum are glued into the recesses 15.
  • these rods have the shape of circular segments extending over a little more than 180 °, so as to exit from the recesses 15 and to be presented parts of about two tenths of a millimeter in thickness projecting from the edge 14 of the middle part 1.
  • the part of the strips 16,17,18, which is glued in the recesses 15 is coated with a thin reflective metallic layer 19.
  • This layer 19 is deposited on the rods 16, 17, 18 by vacuum spraying in a manner well known to those skilled in the art. The adhesion of a layer deposited in this way is remarkable. It is no longer possible to remove it without taking part of the corundum at the same time.
  • the side of the middle 1 extending opposite "9 am is provided with two rods, 17, 18, to make room, between them, for the crown 20, which is arranged on this side of the box, so that the rod 16, arranged on the other side and visible to wear, is not interrupted.
  • the layer 19 has, in fact, the property of concentrating in a central zone of the rods 16, 17, 18, the rays of an incident light beam, as shown by the arrows a and b (Fig. 2), so that by observing these rods in the light, we see, in the middle of their flat face 21, a “line 22 of very great luminosity compared to the rest of the rods. Oddly enough, this line 22 gives, apparently, first to the middle, but also to the watch itself, the thickness of a watch with case whose middle is about a millimeter thinner.
  • the chosen location of the crown 20 therefore also has the effect of not interrupting the optical phenomenon mentioned on the side of the edge of the middle turned towards the hand of the watch wearer, which is precisely the one that comes out of the wearer's sleeves. and is therefore the most visible.
  • the described position of the crown 20 is not disadvantageous. On the contrary, in this place, it is less exposed to the risk of being torn off.
  • this crown In a quartz watch, moreover, this crown is only used for setting the time, which is done to the nearest second, by advancing the minute and second hands and stopping them on a specific time, while waiting the corresponding “top •” of the speaking clock. If the watch is equipped with a calendar mechanism, the crown 20 is also used to update the latter, after the months of less than thirty-one days.
  • these operations controlled by the crown which are relatively delicate and must be carried out with great dexterity, are almost never done while keeping the watch on the wrist. When removed, the location of the crown on either of the long sides of the case is clearly irrelevant.
  • the ends of the strips 16, 17, 18, which are adjacent to the strap fixing horns, are cut at 45 °, so as to be flush with the corners 9 of the box.
  • various metals such as for example chromium, silver, gold, and certain carbides such, for example, as those of titanium or boron, can be used to form the layers 19. It is thus possible to '' match the appearance of the sticks 16, 17, 18 to the rest of the visible parts of the middle part (platinum, gold, rhodium silver, stainless steel or chrome, nickel-plated, plated) or to the appearance of the frame 7.
  • cylindrical elements 23 (Fig. 7) are made, plunge rectified without centers and perfectly polished.
  • the length of the elements 23 will somewhat exceed that of the sides of the middle.
  • a number of elements 23 are then placed in the semi-cylindrical cells 24 of a support 25, which are introduced into a vacuum vaporization installation.
  • the exposure of the elements 23 to the vaporization 26, produces on them the layer 19, which extends over a little less than 180 °.
  • this layer is automatically reflective.
  • the orientation of the elements 23 on the support 25 is indifferent. There is therefore no precaution to take to fill the cells 24 with this support.
  • the elements 23, filled with the layer 19, can then be glued to the middle part 1 (Fig. 8). In doing so, care should be taken that the metallized part of the elements 23 disappears inside the groove 15 of the middle part. As the metallization extends over an arc of the section of the elements 23, which is a little smaller than 180 °, it is not necessary to use special provisions to orient the elements 23 relative to the middle part 1 so that their metallized part is indeed entirely inside the groove 15. When the adhesive used is fully polymerized, the elements 23 can no longer be separated from the middle part 1 by destroying them.
  • the second embodiment (Fig. To 6) is essentially distinguished from the first by the fact that the long sides of the case and therefore also of the middle part are arched. Instead of milling a continuous groove in these arched faces of the edge of the middle part 28, there are formed in these faces rows of hemispherical cells 29, as close as possible to each other and whose diameter is approximately equal to the width of the grooves 15 of the first embodiment.
  • This middle part is manufactured as described above, with reference to Figs. 7 and 8. However, we start with balls, instead of cylindrical elements 23. After having glued these balls into the cells 29 of the middle part 28 and having removed a part a little less than half by grinding, it is a chain of spherical caps which garnishes the edge of the long sides of the middle part 28.
  • the balls used in this embodiment are made of transparent monocrystalline corundum, then coated with a reflective layer, as illustrated in FIG. 7, an optical phenomenon analogous to that which has been described with reference to FIGS. 2 and 3, also occurs in this second embodiment.
  • a “line” of high light intensity instead of a “line” of high light intensity, a series of dots 30 appears, each of them being in the center of the flat face 31 of the protective elements 32.
  • a camber such as that shown in Figs. 4 and 6, could be replaced by two or three flat faces, so as to create a polygonal contour middle with rectilinear sides.
  • the parts of the edge of such a middle part, to be filled with protective elements, would then comprise as many elements in the form of cylindrical segments as there are flat faces.
  • the body should preferably be made of brass.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Adornments (AREA)
  • Electric Clocks (AREA)
  • Manufacture Of Switches (AREA)

Claims (8)

1. Armbanduhrgehäuse-Mittelteil mit kratzfester Seite, dadurch gekennzeichnet, daß seine Seite (14) mit vorstehenden Schutzelementen (16, 17, 18 ; 32) versehen ist, die aus einem praktisch kratzfesten Material bestehen und die in einem Schnitt in einer Ebene axial oder parallel zur Achse des Mittelteils (1, 28) und senkrecht zur Seite (14) desselben mindestens annähernd die Form eines runden Segments geringfügig oberhalb 180° aufweisen, wobei der mittlere Teil des Segments jedes der genannten Elemente auf höchstens 180° erfaßt und in einer Ausnehmung (15, 29) entsprechender Form befestigt ist, eingearbeitet in die Seite (14) des Mittelteils (1, 28).
2. Mittelteil nach Anspruch 1, dadurch gekennzeichnet, daß der Abschnitt jedes der genannten Elemente (16, 17, 18 ; 32) der in eine Ausnehmung (15, 29) der Seite (14) des Mittelteils (1, 28) eingebettet ist mit den Wandungen der genannten Ausnehmung auf seiner gesamten Erstreckung verklebt ist.
3. Mittelteil nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß seine Kontur polygonal ist und daß nur die sich zwischen den Hörnern des einen zu denen des anderen Paares erstreckenden Seiten mit kratzfesten Elementen (16, 17, 18) versehen sind, welche letzteren die Form zylindrischer Segmente haben und in Längsausnehmungen (15) jeder ebenen Fläche der Seite (14) des Mittelteils (1) eingebettet sind, welche ein halbzylindrisches Profil besitzen.
4. Mittelteil nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß seine sich von einem Paar von Hörnern zum anderen erstreckenden Seiten bogenförmig sind und daß die genannten Elemente (32) die Form sphärischer Kalotten aufweisen, die sich über etwas mehr als eine Halbkugel erstrecken und daß die zentrale Halbkugel jedes dieser Elemente in eine halbkugelige Ausnehmung (29) der genannten Seiten des Mittelteils (28) eingesetzt ist, welche letzteren perlschnurartig Schutzelemente (32) präsentieren, die sich über die gesamte Länge der genannten Seiten erstrecken.
5. Mittelteil nach dem einen oder anderen der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die genannten Schutzelemente (16, 17.18 ; 32) aus gefrittetem oder monokristallinem, transparentem oder gefärbtem Korund bestehen.
6. Mittelteil nach Anspruch 5, dadurch gekennzeichnet, daß ein Teil der Oberfläche transparenter Schutzelemente (16, 17, 18 ; 32) etwas weniger als der, der in die Ausnehmung (15. 29) der Seite (14) des Mittelteils (1, 28) eingefügt ist, mit einer reflektierenden metallischen Beschichtung (19) versehen ist.
7. Verfahren zum Herstellen des Mittelteils nach Anspruch 1, dadurch gekennzeichnet, daß man aus einem harten Material zylindrische oder sphärische Elemente (23) eines gewünschten Durchmessers herstellt, daß man sie in halbzylindrische (15) oder halbkugelige (29) Ausnehmungen der Seite (14) eines Mittelteilrohlings (1, 28) nach dessen Bearbeitung einklebt, daß man die vorstehende Partie dieser Elemente derart beschleift, daß nur eine kleine Partie übrig bleibt und daß man danach das Mittelteil der Endbearbeitung unterwirft.
8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß man die genannten Elemente (23), die man herstellt, aus transparentem Korund fertigt und daß man vor dem Einkleben in das Mittelteil (1, 28) ein wenig weniger als die Hälfte ihrer Oberfläche mit einer reflektierenden Beschichtung (19) durch Vakuumbedampfung beschichtet, wobei man sie in halbzylindrische oder halbkugelige (24) Öffnungen eines Trägers (25) einsetzt.
EP82810545A 1981-12-15 1982-12-15 Armbanduhrmittelteil und Herstellungsverfahren Expired EP0082119B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH798781A CH648450GA3 (de) 1981-12-15 1981-12-15
CH7987/81 1981-12-15

Publications (2)

Publication Number Publication Date
EP0082119A1 EP0082119A1 (de) 1983-06-22
EP0082119B1 true EP0082119B1 (de) 1986-12-03

Family

ID=4333424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82810545A Expired EP0082119B1 (de) 1981-12-15 1982-12-15 Armbanduhrmittelteil und Herstellungsverfahren

Country Status (6)

Country Link
EP (1) EP0082119B1 (de)
JP (1) JPS58109877A (de)
KR (1) KR850001791B1 (de)
CH (1) CH648450GA3 (de)
DE (1) DE3274588D1 (de)
HK (1) HK3892A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3810001C1 (de) * 1988-03-24 1989-10-12 D. Swarovski & Co., Wattens, At
CH675045B5 (de) * 1989-03-07 1991-02-28 Ebauchesfabrik Eta Ag
IT226577Z2 (it) * 1992-05-14 1997-06-24 Consolo Giovanni Battista Lancette perfezionate per orologi particolarmente studiate in modo da consentire l'incastonatura di brillantini o di altre pietre preziose o non di svariate dimensioni
TW200534059A (en) * 2004-04-14 2005-10-16 Rotary Group Holdings Ltd Watch case
CN109613813B (zh) * 2019-02-25 2024-08-20 广东小天才科技有限公司 一种穿戴设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH312654A (fr) * 1954-08-13 1956-02-15 Graber Samuel Procédé de fabrication d'une boîte de montre-bracelet, et boîte de montre-bracelet obtenue par ce procédé
FR1393525A (fr) * 1964-02-06 1965-03-26 Procédé de gravure et d'incrustation, notamment pour pierres de bijouterie et produits obtenus
DE2921597C2 (de) * 1979-05-28 1983-09-29 Liss AG, Grenchen Bausatz zur Herstellung individuell abriebfest dekorierter Gebrauchsgegenstände

Also Published As

Publication number Publication date
CH648450GA3 (de) 1985-03-29
DE3274588D1 (en) 1987-01-15
JPH0259959B2 (de) 1990-12-13
KR850001791B1 (ko) 1985-12-18
JPS58109877A (ja) 1983-06-30
KR840003074A (ko) 1984-08-13
HK3892A (en) 1992-01-17
EP0082119A1 (de) 1983-06-22

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