EP4250020A1 - Armbanduhrengehäuse mit drehbarem aussenring - Google Patents

Armbanduhrengehäuse mit drehbarem aussenring Download PDF

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Publication number
EP4250020A1
EP4250020A1 EP22163346.4A EP22163346A EP4250020A1 EP 4250020 A1 EP4250020 A1 EP 4250020A1 EP 22163346 A EP22163346 A EP 22163346A EP 4250020 A1 EP4250020 A1 EP 4250020A1
Authority
EP
European Patent Office
Prior art keywords
bezel
watch case
case according
intermediate assembly
axially
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.)
Pending
Application number
EP22163346.4A
Other languages
English (en)
French (fr)
Inventor
Max-André FREY
David ECOFFEY
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.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
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 Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to EP22163346.4A priority Critical patent/EP4250020A1/de
Publication of EP4250020A1 publication Critical patent/EP4250020A1/de
Pending 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/28—Adjustable guide marks or pointers for indicating determined points of time
    • G04B19/283—Adjustable guide marks or pointers for indicating determined points of time on rotatable rings, i.e. bezel

Definitions

  • the present invention relates to a watch case with a rotating bezel, that is to say a watch case comprising a middle part and a bezel mounted to rotate relative to the middle part.
  • Such a rotating bezel can have various functions. It can, for example, control a mechanism or carry a scale or indications to display information in collaboration with a needle.
  • a well-known example are the rotating bezels of diving watches, which are used to indicate the duration of immersion.
  • a classic method for fixing a rotating bezel to a middle part, without blocking it from rotating consists of making a bent metal wire or an elastic ring cooperate with a groove in the middle part and a groove in the bezel.
  • disassembly of the bezel is difficult to carry out. It requires inserting a tool between the middle and the bezel and forcing the bezel to detach it from the middle, causing the destruction of the metal wire or the ring.
  • disassembly can cause damage to the bezel and the caseband, in particular scratches.
  • the rotating bezel is here in two assembled annular parts - an inner part and an outer part - and the outer part, which can be manipulated by the user, comprises at its inner periphery an axial extension in which a groove is made. Screws accessible on the outer periphery of the case middle, in the two lugs intended to receive the bracelet, extend radially in the wall of the middle to end in this groove. These screws thus hold the rotating bezel axially without blocking it from rotating.
  • This system is also not very resistant to shocks due to the linear contact between each screw and the wall of the groove likely to form notches in the latter perceptible to the user during the rotation of the bezel.
  • This system is also not designed to facilitate optimization of the coefficient of friction between the screws and the bezel.
  • the present invention aims to remedy, at least in part, the aforementioned drawbacks.
  • a watch case comprises a middle part 1, a back 2, a crystal 3 and a rotating bezel 4.
  • the back 2 is assembled to the middle part 1 in a known manner, but it could also be in a single piece with the middle part 1.
  • the middle part 1 carries in its lower part two pairs of horns 5 for fixing a bracelet 6.
  • the upper part of the middle part 1, surrounded by the bezel rotating 4, constitutes a fixed frame or bezel 7 in which the glass 3 is embedded.
  • the middle part 1 is in one piece but it could be in several assembled parts, comprising for example a main part and the frame 7 assembled at the main part.
  • the watertightness of the watch case is ensured by a seal 8 interposed between the crystal 3 and the frame 7 and by another seal 9 interposed between the back 2 and the middle part 1.
  • the interior space delimited by the middle part 1, the back 2 and the crystal 3 forms a waterproof zone 10 in which the movement of the watch is housed, the hands and the dial (not shown).
  • the rotating bezel 4 can be in one piece, as shown, or in several assembled parts, in particular in several coaxial annular parts. It is guided in rotation around the axis A of the watch case by the mount 7 and can include on its lower surface a unidirectional toothing 4a cooperating with a pawl (not shown) carried by the middle part 1 to authorize its rotation in a sense only.
  • the rotating bezel 4 is held axially relative to the middle part 1 by an assembly device comprising removable assembly elements 11, such as screws or dowels, which can be manipulated using a tool from outside the box watch, and first and second intermediate assembly parts 12.
  • the removable assembly elements 11 extend radially (relative to the axis A) in the wall of the middle part 1 while being accessible from the two lugs 5a intended to receive the bracelet 6. Thus, the elements of removable assembly 11 are hidden by the bracelet 6 when the latter is assembled to the middle part 1, as visible in the figure 4 .
  • the first and second intermediate assembly parts 12 are located at 6 o'clock and 12 o'clock in housings 13 formed in the wall of the middle part 1 and open in the upper part.
  • Each of these intermediate assembly parts 12 is an annular segment having in its upper part a flange 14 and, in the lower part, two pierced feet 15. These pierced feet 15 are inserted into the corresponding housing 13 of the middle part 1 and their holes 16 are aligned with two respective holes 17 made in the wall of the middle part 1 and which open on one side into the lug 5a and on the other side into the housing 13.
  • the removable assembly elements 11 s extend into the holes 17 of the middle part 1 and in the holes 16 of the feet 15 and end in holes 18 in the wall of the middle part 1.
  • the housings 13 serve to position the intermediate assembly parts 12 before their attachment to the middle part 1 by the removable assembly elements 11.
  • the removable assembly elements 11 thus block the intermediate assembly parts 12 axially (this is i.e. along axis A), the intermediate assembly parts 12 being prevented from rotating around axis A by the removable assembly elements 11 and/or by the housings 13.
  • the removable assembly elements 11 are offset relative to the holes 17 and 18 of the wall of the middle part 1 and their end 19 received in the holes 18 has a conical shape and cooperates with a wall, also conical, of the holes 18 to press the intermediate assembly parts 12 against the bottom 20 of their housing 13. In this way, precise axial positioning of the intermediate assembly parts 12 can be obtained.
  • the removable assembly elements 11 are headless screws with conical ends screwed into the holes 16 of the feet 15, which are therefore tapped for this purpose, and can be manipulated using a simple screwdriver.
  • the flange 14 of the intermediate assembly parts 12 is engaged in a groove 21 made in the inner periphery of the bezel 4, which holds the bezel 4 axially without preventing it from rotating.
  • the opposite is of course possible, namely that the axial retention of the bezel 4 can be obtained by cooperation between an interior flange of the bezel 4 and a groove of the intermediate assembly parts 12.
  • the conical holes 18 could be replaced by a notch formed on the periphery of the middle part 1 and having a V-shaped radial section or at least one inclined surface arranged to cooperate with the conical end 19 removable assembly elements 11.
  • a single assembly part intermediate 12 could be provided, which would be in the form of a split ring (cf. figure 5 ) almost completely surrounding the mount 7.
  • Figure 6 shows yet another variant is shown in Figure 6 , where the intermediate assembly parts 12 are annular segments longer than those of the figures 1 to 4 to, together, almost completely surround the frame 7.
  • the assembly of the middle part 1 and the bezel 4 can be particularly robust and resistant to shocks since the intermediate assembly part(s) 12 can be specially shaped for these purposes, with typically, as shown, plane-on-plane contact between the bezel 4 and the intermediate assembly part(s) 12 and large contact surfaces.
  • the intermediate assembly part(s) 12 can also be made from a material distinct from those of the middle part 1 and the removable assembly elements 11, in particular in a material which minimizes friction and promotes sliding between the bezel 4. and the intermediate assembly part(s) 12.
  • the intermediate assembly part(s) 12, or only their parts in contact with the bezel 4, can also be coated with an anti-friction coating, such as a coating of type DLC (Diamond-Like Carbon).
  • the precise axial positioning of the intermediate assembly part(s) 12 against the bottom 20 of their housing 13 in the wall of the middle part 1 makes it possible to minimize the axial play between the middle part 1 and the bezel 4, by adjusting as closely as possible the clearance between the collar 14 and the groove 21, and to properly control the light between said middle part and bezel.
EP22163346.4A 2022-03-21 2022-03-21 Armbanduhrengehäuse mit drehbarem aussenring Pending EP4250020A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22163346.4A EP4250020A1 (de) 2022-03-21 2022-03-21 Armbanduhrengehäuse mit drehbarem aussenring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22163346.4A EP4250020A1 (de) 2022-03-21 2022-03-21 Armbanduhrengehäuse mit drehbarem aussenring

Publications (1)

Publication Number Publication Date
EP4250020A1 true EP4250020A1 (de) 2023-09-27

Family

ID=80928648

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22163346.4A Pending EP4250020A1 (de) 2022-03-21 2022-03-21 Armbanduhrengehäuse mit drehbarem aussenring

Country Status (1)

Country Link
EP (1) EP4250020A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5830886U (ja) * 1981-08-25 1983-02-28 セイコーインスツルメンツ株式会社 回転ベゼル付腕時計ケ−ス
JPS5995279U (ja) * 1982-12-17 1984-06-28 シチズン時計株式会社 腕時計ケ−スのレジスタ−リング部の構造
EP1712959A1 (de) * 2005-04-13 2006-10-18 The Swatch Group Management Services AG Uhr mit einen umdrehbaren Glasreif
US20140098650A1 (en) 2012-10-04 2014-04-10 Ball Watch Company Sa Revolving bezel system for a timepiece and timepiece comprising such a system
ITMI20121844A1 (it) 2012-10-30 2014-05-01 Montres Sea God Sa Cassa di orologio con ghiera girevole.
EP3360013B1 (de) * 2015-10-06 2019-12-04 Lvmh Swiss Manufactures SA Armbanduhr mit abnehmbaren hörner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5830886U (ja) * 1981-08-25 1983-02-28 セイコーインスツルメンツ株式会社 回転ベゼル付腕時計ケ−ス
JPS5995279U (ja) * 1982-12-17 1984-06-28 シチズン時計株式会社 腕時計ケ−スのレジスタ−リング部の構造
EP1712959A1 (de) * 2005-04-13 2006-10-18 The Swatch Group Management Services AG Uhr mit einen umdrehbaren Glasreif
US20140098650A1 (en) 2012-10-04 2014-04-10 Ball Watch Company Sa Revolving bezel system for a timepiece and timepiece comprising such a system
ITMI20121844A1 (it) 2012-10-30 2014-05-01 Montres Sea God Sa Cassa di orologio con ghiera girevole.
EP3360013B1 (de) * 2015-10-06 2019-12-04 Lvmh Swiss Manufactures SA Armbanduhr mit abnehmbaren hörner

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