EP0654717B1 - Uhr mit einer Vorrichtung zur Befestigung eines abnehmbaren Elementes an einen Träger und Verfahren zum Befestigen dieses Elementes an diesen Träger - Google Patents

Uhr mit einer Vorrichtung zur Befestigung eines abnehmbaren Elementes an einen Träger und Verfahren zum Befestigen dieses Elementes an diesen Träger Download PDF

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Publication number
EP0654717B1
EP0654717B1 EP94118079A EP94118079A EP0654717B1 EP 0654717 B1 EP0654717 B1 EP 0654717B1 EP 94118079 A EP94118079 A EP 94118079A EP 94118079 A EP94118079 A EP 94118079A EP 0654717 B1 EP0654717 B1 EP 0654717B1
Authority
EP
European Patent Office
Prior art keywords
frame
bolt
timepiece
shoulder
timepiece according
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
EP94118079A
Other languages
English (en)
French (fr)
Other versions
EP0654717A1 (de
Inventor
Friedrich Perrot
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 EP0654717A1 publication Critical patent/EP0654717A1/de
Application granted granted Critical
Publication of EP0654717B1 publication Critical patent/EP0654717B1/de
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
    • G04B37/0008—Cases for pocket watches and wrist watches
    • 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
    • G04B37/225—Non-metallic 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
    • G04B47/046—Changeable decorations and parts thereof, decorations for the case which change the external appearance of the clockwork

Definitions

  • the present invention relates to a timepiece comprising a frame on which is detachably held, and by means of a specific fixing device, an insert.
  • this invention relates to a method of assembling such an insert on a frame of the aforementioned type.
  • the invention relates to a timepiece and an assembly method, in which the frame is made of a synthetic material, said insert being made of any material, for example a metallic material.
  • the insert can advantageously be constituted by a protective plate pressed against the frame, and attached to it to protect some of the fragile components of said timepiece.
  • this arrangement can lead, during disassembly and reassembly of the insert on the frame, to damage of components by the fixing device.
  • the object of the present invention is to respond to the aforementioned drawbacks by providing a timepiece in which the above-mentioned insert is held on the frame by removable fixing means capable of withstanding several disassembly and reassembly while retaining their reliability, and whose installation on the frame, as well as the subsequent disassembly and reassembly operations, are not likely to injure fragile components of the timepiece.
  • the subject of the invention is a timepiece of the type comprising a body or frame on which an attached piece is detachably held, such as for example a protective plate, this piece being held on the body or frame by fixing means integral with the body or frame which can rotate while remaining at a constant height relative to the body or frame to allow release of said insert and the release thereof, this invention being characterized in that the fixing means consist of at least one latch which is fixedly and permanently anchored in the same material of the body or frame, with an axial immobilization with respect thereto.
  • FIG. 1 a timepiece according to the invention will be described below, identified by the general reference 1.
  • the timepiece 1 comprises a body 2 forming, for example, a frame, made of a synthetic material, in particular of a plastic material, such as phenylene polysulphide (PPS) or in a nonlimiting manner of another synthetic material.
  • a synthetic material in particular of a plastic material, such as phenylene polysulphide (PPS) or in a nonlimiting manner of another synthetic material.
  • PPS phenylene polysulphide
  • an excitation coil 4 shown here in section very schematically.
  • an insert 6 forming here, for example, a so-called protection plate intended either to protect some of the components (not shown) of the timepiece 1 , or to give this room a particular aspect.
  • the protective plate 6 does not entirely cover the coil 4 because of the outside diameter of this coil which must be as large as possible, for reasons of energy supplied, while the thickness movement should be as small as possible.
  • the timepiece 1 further comprises fixing means 8 which are integral with the frame 2 and which hold in place firmly, but removably, the insert 6.
  • these fixing means 8 consist of one or more latches 10 (only one being shown here) which are permanently anchored in the very material of the body or frame 2, with an axial immobilization, relative to this body or frame, provided by this material, these locks being able to rotate in the body or frame.
  • this or these rotary locks 10 can be turned in the frame 2 while remaining at a constant height with respect thereto. It will also be understood, as can be seen in FIGS. 3 and 7, that this angular displacement of the lock allows the release of the insert 6, and the release thereof relative to the frame 2 (according to arrow F).
  • each lock 10 comprises a body 12 which is provided, at a first end, with a foot 14 and, at a second end, opposite the first, with a head 16.
  • the head 16 has a straight slot 18 which allows the lock 10 to be actuated in rotation by a tool, not shown, for example a screwdriver.
  • the body 12 of the latch 10 comprises, at the end opposite to the foot 14, a cylindrical base 15 which is formed under the head 16, and which is partly embedded in the frame 2.
  • Each lock 10 is therefore in the form of an essentially cylindrical metal part, of generally elongated shape.
  • the body 12 of the latch 10 is provided with one or more so-called retaining shoulders 20a, 20b which extend transversely relative to the body 12, and which are retained axially (FIGS. 1, 3 and 5) by one or more regions deformed material constituting the frame 2, when the latch 10 is in place therein.
  • the material of the body or frame 2 covers the shoulder (s) 20a, 20b; the body of the lock 10 being embedded in the form of an insert in this material.
  • the body 12 of each latch 10 has, along its length, at least one collar 22 which is permanently anchored, that is to say permanently, in the material forming the frame 2, this collar thus participating in the holding of the lock 10 in the frame.
  • the latch 10 is provided with two retaining shoulders 20a, 20b; the first shoulder 20a being formed on the foot 14 and in particular on its side facing the head 16, this foot 14 being also chamfered at its free end to allow the introduction of the latch 10 in the material of the frame, and in particular in a pilot hole 24 (FIG. 1) formed therein.
  • the second retaining shoulder 20b is in turn formed on the collar 22, also on the side of the head 16.
  • the collar 22 of the third embodiment is chamfered on a first side 22a, oriented towards the foot 14, while it has a flat transverse shoulder referenced 20c on its second side 22b which is opposite at the first 22a and which is oriented towards the head 16.
  • This arrangement makes it possible to insert the latch 10 in the frame 2 by cold deformation.
  • each collar 22 is of circular shape and extends continuously around the body 12 of the latch 10. In an alternative embodiment not shown, this collar 22 can be formed by one or more corner segments partially covering the body 12.
  • the collar 22 is formed on the body 12 of the latch 10, at a distance from the foot 14.
  • this collar 22 is formed approximately in the middle of the body 12, namely in a median region thereof.
  • the base 15 has an outside diameter D3 which is greater than that, referenced D2, of the collar 22; this same diameter D2 of the collar 22 being greater than the outside diameter D1 of the foot 14.
  • the latch 10 has a stepped profile, the outer envelope of this latch varying progressively from the foot 14 towards the head 16.
  • the arrangement of the retaining shoulders 20a, 20b improves the resistance characteristics of the latch 10 when it is fixedly anchored in the material of the frame 2, which has been deformed, in these embodiments, hot and creep during the installation of this lock.
  • the latch 10 comprises, in the embodiments of FIGS. 1 to 5, two other shoulders 21a, 21b formed respectively under the collar 22 and under the base 15. These shoulders are oriented towards the foot 14, and they ensure the discharge of the synthetic material from the frame, under the effort of introducing the lock therein.
  • the shoulders 20a and 21a are formed by the two faces of a radial groove 26a shaped in the body of said latch, between the foot 14 and the collar 22.
  • the latch 10 further comprises a second radial groove 26b, formed between the collar 22 and the base 15 and forming the shoulders 20b and 21b.
  • the geometry of the latch 10 which has just been described must be such that the material which has been deformed by creep by the shoulders 21a, 21b has sufficient space to come to be housed in the grooves 26a and 26b and to come fill them.
  • the grooves or recesses 26a and 26b must define at least a volume equal to that of the material pushed back by the shoulders 21a and 21b.
  • the head 16 of the latch 10 has radial wings 28, here four in number, which are angularly displaceable by a corresponding action of the tool, not shown, in the slot 18.
  • These wings 28 are shaped to cover, in a so-called locking position, one or more support regions 30, in particular of partially frustoconical shape or in the form of cylindrical recess (not shown), formed directly on the insert 6 in order to maintain it on the frame 2.
  • wings 28 have been shown here on the head 16, it should be noted that the latter may have another construction having one or another number of wings 28.
  • each bearing region 30 is formed by the deformation of an edge, not referenced, of a passage orifice 32 formed in the insert 6.
  • This deformation can be achieved by cold deformation of the material, for example by stamping.
  • the latch 10 has lateral flats 32a, 32b formed on either side of the base 15 and extending longitudinally relative to the body 12
  • These flats 32a, 32b (two in this example) form (FIG. 6), when the lock is put in place, corresponding flat shapes in the material of the frame 2.
  • These flats keep the lock 10 in its angular position. locking, and during the rotation thereof, by a tool, they constitute means for increasing the torque in the material.
  • These flats are formed by machining a particular side of the lateral straight sides of the head 16 and the slot 18, by a single operation, using a milling cutter train. Although two flats have been shown here, it is understood that in a variant not shown, only one can be provided on the latch 10.
  • the invention further relates to a method of assembling the insert 6 on the frame 2.
  • one or more pilot holes 24 are first cleaned in the frame 2, then the insert 6 is provided, which is provided with one or more through orifices 32.
  • one or more fixing locks 10 are provided.
  • each lock 10 preferably oriented in its locking position (FIGS. 1, 2, 5 and 6) is introduced into a pilot hole 24 made in the frame 2, via the passage orifice 32 of the insert 6, while deforming the material constituting the frame 2, under the action of the discharge shoulders 21a, 21b, to cause this repressed material to cover the shoulder (s) 20a, 20b.
  • This introduction of the bolt (s) 10 into the material of the frame 2 is continued until the blocking flange (s) 28 of each bolt 10 come into contact with the support regions 30 to rest on the insert 6.
  • the material of the frame 2 is deformed by heating it which is provided by the lock itself, during its installation.
  • This heating of the material is caused for example by the application of high frequency vibrations to the latch 10 at the same time as it is pushed into its pilot hole 24.
  • These frequencies are preferably chosen from the range of ultrasound.
  • the latch 10 is put in place by a cold deformation of the material of the frame 2.
  • each lock 10 is placed on the timepiece 1 preferably in an angular position such that the wings 28 come to cover the support region 30.
  • the lock (s) 10 are placed on the timepiece in their angular locking position to abut on the insert 6 and also to define their proper operating height relative to this part.
  • each latch 10 automatically cleans, during its own introduction, straight recesses or grooves in the material forming the frame 2. These grooves or recesses, not referenced, ensure the axial maintenance of the lock 10 but allow its rotation to release the wings 28 from the support regions 30 and to allow the release of the protection plate 6 when the wings 28 in the rotated position (FIGS. 3 and 4) coincide with the clearance formed by the orifice 32.
  • the head 16 of the lock 10 remains at constant height, whether this lock is in its locked position or in its unlocked position.
  • a tool not shown, such as a screwdriver
  • this tool end is held laterally by the flange of the passage orifice 32 of the added plate 6, and cannot slide to possibly injure one of the constituents of the timepiece 1, in particular the coil in this case.
  • the rotation of the lock 10 does not cause, during the disassembly / reassembly operations, any axial displacement of the latter, there is no risk of the synthetic material being torn from the frame, which improves the service life. of this arrangement. Furthermore, during these operations, the thrust of the screwdriver towards the frame does not cause the latches to move axially in depth, the latter being stabilized downwards by the discharge shoulders 21a, 21b.
  • the locks 10 being fixed permanently, that is to say permanently, in the frame 2, there is no risk of loss of these during these disassembly / reassembly operations.
  • latches 10 allow the arrangement of this arrangement in frames having thin walls.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Plates (AREA)

Claims (15)

  1. Zeitmeßgerät der Bauart, die einen Korpus oder ein Gestell (2) umfaßt, auf dem lösbar ein Ansetzteil (6), wie beispielsweise eine Schutzplatte, gehalten ist, welches Teil auf dem Korpus oder Gestell (2) mittels Befestigungsmitteln gehalten ist, die mit dem Korpus oder Gestell verbunden und drehbar sind, wobei sie auf einer konstanten Höhe relativ zu dem Korpus oder Gestell bleiben, um ein Lösen des Ansetzteils (6) und die Freisetzung desselben zuzulassen, dadurch gekennzeichnet, daß die Befestigungsmittel von mindestens einem Riegel (10) gebildet sind, der in dem eigenen Material des Korpus oder Gestells mit einer Axialfestlegung relativ zu diesem verankert ist.
  2. Zeitmeßgerät nach Anspruch 1, dadurch gekennzeichnet, daß der Riegel (10) einen Korpus (12) umfaßt, versehen mit mindestens einer Schulter (20a, 20b, 20c), die axial durch eine deformierte Partie des das Gestell (2) bildenden Materials gehalten ist.
  3. Zeitmeßgerät nach Anspruch 2, dadurch gekennzeichnet, daß der Korpus (12) des Riegels (10) auf seiner Länge mindestens einen Kragen (22) umfaßt, der die Schulter (20b, 20c) umfaßt und bleibend in dem Material verankert ist, aus dem das Gestell (2) besteht, wobei der Kragen (22) die Halterung des Riegels (10) in demselben verbessert.
  4. Zeitmeßgerät nach Anspruch 3, dadurch gekennzeichnet, daß der Kragen (22) auf einer ersten, gegen einen Fuß (14) des Riegels (10) orientierten Seite abgefast ist, während er eine gerade Schulter (20c) auf einer zweiten Seite gegenüber der ersten aufweist.
  5. Zeitmeßgerät nach Anspruch 3, dadurch gekennzeichnet, daß der Kragen (22) in einem Abstand relativ zu einem Fuß (14) des Riegels (10) ausgearbeitet ist.
  6. Zeitmeßgerät nach Anspruch 5, dadurch gekennzeichnet, daß der Kragen (22) einen Außendurchmesser (D2) aufweist, der größer ist als jener (D1) des Fußes (14).
  7. Zeitmeßgerät nach Anspruch 2, dadurch gekennzeichnet, daß die Schulter (20a) von einer Seite einer Radialnut (26) gebildet ist, eingearbeitet in den Korpus (12) des Riegels (10).
  8. Zeitmeßgerät nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Riegel (10) einen Kopf (16) mit mindestens einem in Winkelrichtung verlagerbaren Flügel (28) aufweist, und ausgebildet, um in einer als Verriegelungsposition bezeichneten Position einen Anlagebereich (30) abzudecken, der auf dem Ansetzteil (6) ausgebildet ist, um dessen Halterung auf dem Korpus oder Gestell (2) sicherzustellen.
  9. Zeitmeßgerät nach Anspruch 8, dadurch gekennzeichnet, daß der Anlagebereich (30) durch Deformation eines Randes einer Durchgangsöffnung (32), ausgebildet auf dem Ansetzteil (6), hergestellt ist.
  10. Zeitmeßgerät nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Riegel (10) mindestens eine seitliche Abflachung (32a, 32b) umfaßt, die sich in Längsrichtung relativ zu ihm erstreckt und in dem Material des Korpus oder Gestells (2) eine entsprechend abgeflachte Form bildet, um das Drehmoment des Riegels (10) in dem Korpus oder Gestell (2) zu erhöhen.
  11. Verfahren zum Fügen eines Ansetzteils auf einem Korpus oder Gestell eines Zeitmeßgerätes, dadurch gekennzeichnet, daß es besteht aus:
    - Einarbeiten eines Vorlochs (24) in dem Korpus oder Gestell (2),
    - Bereitstellen mindestens eines Befestigungsriegels (10), dazu bestimmt, ein Ansetzteil (6) auf dem Korpus oder Gestell (2) zu halten, welcher Riegel (10) mindestens eine Schulter (20a, 20b, 20c) und mindestens einen Blockierflügel (28) aufweist, und
    - Einfügen des Riegels (10) in das Vorloch (24) des Gestells unter Deformation des den Korpus oder das Gestell (2) bildenden Materials, um dies dazu zu bringen, die Schulter (20a, 20c, 20b) zu überdekken, um den Riegel (10) an Ort und Stelle durch das eigene Material des Korpus oder Gestells (2) zu halten, welcher Riegel in dieser Position ausgebildet ist, um das Ansetzteil zu halten.
  12. Fügeverfahren nach Anspruch 11, dadurch gekennzeichnet, daß man den Riegel (10) in den Korpus oder das Gestell (2) einfügt, indem man den Blockierflügel (28) in einer Winkelposition derart orientiert, daß er auf dem Ansetzteil (6) aufsitzt, das vorher auf dem Korpus oder Gestell für seine Verriegelung positioniert worden ist.
  13. Fügeverfahren nach Anspruch 11, dadurch gekennzeichnet, daß man das Material des Korpus oder Gestells (2) durch eine Erwärmung desselben deformiert, bewirkt durch den Riegel (10) bei seiner Plazierung.
  14. Fügeverfahren nach Anspruch 13, dadurch gekennzeichnet, daß man die Erwärmung des Materials durch Einwirkenlassen von hochfrequenten Vibrationen auf den Riegel (10) erwärmt.
  15. Fügeverfahren nach Anspruch 14, dadurch gekennzeichnet, daß die hohen Frequenzen im Bereich des Ultraschalls gewählt werden.
EP94118079A 1993-11-23 1994-11-17 Uhr mit einer Vorrichtung zur Befestigung eines abnehmbaren Elementes an einen Träger und Verfahren zum Befestigen dieses Elementes an diesen Träger Expired - Lifetime EP0654717B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3485/93 1993-11-23
CH348593 1993-11-23

Publications (2)

Publication Number Publication Date
EP0654717A1 EP0654717A1 (de) 1995-05-24
EP0654717B1 true EP0654717B1 (de) 1997-06-04

Family

ID=4257011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118079A Expired - Lifetime EP0654717B1 (de) 1993-11-23 1994-11-17 Uhr mit einer Vorrichtung zur Befestigung eines abnehmbaren Elementes an einen Träger und Verfahren zum Befestigen dieses Elementes an diesen Träger

Country Status (6)

Country Link
US (1) US6092923A (de)
EP (1) EP0654717B1 (de)
JP (1) JP3569012B2 (de)
CN (1) CN1054926C (de)
DE (1) DE69403612T2 (de)
SG (1) SG95570A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6891778B1 (en) 1999-07-20 2005-05-10 Zadora Timepieces, Llc Watch with rotating conical bands and with removable objects
WO2001005209A2 (en) * 1999-07-20 2001-01-25 Zadora Timepieces, Llc A watch with rotating conical bands and with removable objects
US7281845B2 (en) 2004-04-08 2007-10-16 Hohenstein William H Watchcase adapted for a removable ornamental top
CN101727066B (zh) * 2008-10-14 2011-09-21 张明辉 易于拆合的钟表的拆解及组装方法
EP2455822B1 (de) * 2010-11-23 2017-11-15 ETA SA Manufacture Horlogère Suisse Verfahren und Einrichtung für die Bestigung eines Anzeigenelements
EP3313227A1 (de) * 2015-06-25 2018-05-02 Ecole Polytechnique Federale de Lausanne (EPFL) Ultraschallansteuerungsverfahren
EP3671367A1 (de) * 2018-12-21 2020-06-24 ETA SA Manufacture Horlogère Suisse Anordnung aus einer halterung, einer platine und befestigungsmitteln, insbesondere für eine uhr
EP3832396B1 (de) * 2019-12-03 2024-01-24 ETA SA Manufacture Horlogère Suisse Befestigungsvorrichtung eines anzeige- oder verkleidungselements einer uhr

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US476748A (en) * 1892-06-07 Watch-case spring
GB646555A (en) * 1948-06-25 1950-11-22 Fairey Aviat Co Ltd Improvements in or relating to fastening devices
JPS5580774U (de) * 1978-11-28 1980-06-03
CH646577GA3 (fr) * 1981-06-24 1984-12-14 Ebauchesfabrik Eta Ag Procédé d'usinage du fond d'une boîte de montre moyens pour la mise en oeuvre du procédé et boîte de montre résultant de la mise en oeuvre du procédé.
CH646570A5 (en) * 1981-11-09 1984-12-14 Watch case
JP2811027B2 (ja) * 1991-05-24 1998-10-15 松下電器産業株式会社 電子機器筐体の蓋装置
CH683582B5 (fr) * 1992-06-30 1994-10-14 Ebauchesfabrik Eta Ag Pièce d'horlogerie comportant un élément fixé rigidement sur une pièce de base en matière plastique.

Also Published As

Publication number Publication date
EP0654717A1 (de) 1995-05-24
CN1054926C (zh) 2000-07-26
JPH07198869A (ja) 1995-08-01
CN1114755A (zh) 1996-01-10
DE69403612D1 (de) 1997-07-10
JP3569012B2 (ja) 2004-09-22
SG95570A1 (en) 2003-04-23
DE69403612T2 (de) 1998-01-08
US6092923A (en) 2000-07-25

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