EP4191347A1 - Boite de montre comprenant un fond orienté dans une position angulaire prédéfinie - Google Patents

Boite de montre comprenant un fond orienté dans une position angulaire prédéfinie Download PDF

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Publication number
EP4191347A1
EP4191347A1 EP21211730.3A EP21211730A EP4191347A1 EP 4191347 A1 EP4191347 A1 EP 4191347A1 EP 21211730 A EP21211730 A EP 21211730A EP 4191347 A1 EP4191347 A1 EP 4191347A1
Authority
EP
European Patent Office
Prior art keywords
annular bearing
axial annular
axial
watch case
bearing surfaces
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
EP21211730.3A
Other languages
German (de)
English (en)
French (fr)
Inventor
Joël Allimann
Simon Garcin
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.)
Swatch Group Research and Development SA
Original Assignee
Swatch Group Research and Development SA
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 Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP21211730.3A priority Critical patent/EP4191347A1/fr
Priority to US17/943,756 priority patent/US20230168633A1/en
Priority to JP2022156067A priority patent/JP7430231B2/ja
Priority to CN202211528457.0A priority patent/CN116203818A/zh
Publication of EP4191347A1 publication Critical patent/EP4191347A1/fr
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
    • 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
    • G04B37/0008—Cases for pocket watches and wrist watches
    • G04B37/0033—Cases for pocket watches and wrist watches with cover or bottom which can slide or turn (without a spring action)
    • 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
    • G04B37/005—Cases for pocket watches and wrist watches with cover or protection device which can be completely removed, either by lifting off or by sliding, or by turning (protection covers, protection cases also against humidity)
    • 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
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/11—Hermetic sealing of openings, joints, passages or slits of the back cover of pocket or wrist watches
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/02—Component assemblies
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/08—Housings

Definitions

  • the invention relates to the field of watchmaking, and in particular to the components of a watch case.
  • the invention relates to a watch case comprising a back oriented in a predefined angular position.
  • the watch cases have a middle part on either side of which are fixed a crystal and a back.
  • the back can be fixed to the caseband by screwing, by assembly of the bayonet type or by tight fitting by press fitting, that is to say by driving in.
  • a seal is arranged in the middle and is compressed radially by the back against the middle when driving the back into the middle.
  • the seal has the effect of giving the box a desired level of water and air tightness, as well as ensuring the mechanical strength of the assembly.
  • a pattern such as a brand logo
  • the background be oriented so that said pattern is aligned with respect to a vertical axis 6 o'clock - 12 o'clock, to reasons of perceived quality in particular.
  • the orientation of the back in relation to the middle part is generally carried out manually by appropriate pre-positioning of the back part in relation to the middle part before mounting on the press, using visual markers present on the middle part or the back part, by example thanks to a notch for the adjustment rod.
  • the invention solves the aforementioned drawbacks by proposing a solution making it possible to control the orientation of the back relative to the caseband when it is fixed by press fit.
  • the present invention relates to a watch case comprising a back driven into a middle part by means of a seal, the back comprising a body from which a lip extends radially, said body comprising an axial annular bearing surface and said lip comprising a radial annular bearing surface.
  • the caseband has an axial opening and has an axial annular bearing extending opposite the axial annular bearing of the back body, and a radial annular bearing bearing against the radial annular bearing of the lip.
  • the gasket is interposed between the axial annular bearing surfaces of the middle part and the back, said axial annular bearing surfaces having peripheral profiles of complementary, substantially circular shapes, both comprising a first portion in the form of an arc of a circle having a first radius R1, R2, and a second portion in the form of an arc of circle to which the first portion is connected, having a second radius r1, r2 whose value is lower than that of the first radius R1, R2.
  • the invention may also include one or more of the following characteristics, taken separately or in all technically possible combinations.
  • the value of the second radius r1, r2 is greater than half the value of the first radius R1, R2.
  • the peripheral profile of the axial annular bearing surfaces of the middle part and the back comprise first and second portions in the form of arcs of circles distributed alternately, one after the other.
  • the axial annular bearing surfaces of the middle part and the back are configured so that the arrows of the first and second portions in the form of circular arcs are separated from each other by an angle of 60 degrees.
  • the axial annular bearing surfaces of the middle part and the back are configured so that the arrows of the portions in the form of arcs of a circle define secant line segments at a point materializing the center of the opening.
  • the shape defined by the peripheral profile of the axial annular bearing surfaces is convex.
  • the seal has a profile complementary to those of the axial annular bearing surfaces of the caseband and the back.
  • the present invention relates to a watch case 10, a portion of which is shown in the sectional view along a radial plane of said watch case 10 of the figure 1 .
  • the watch case 10 comprises a middle part 20 of generally circular shape comprising an axial opening 21 receiving a crystal (not shown) at one of its ends called the "upper end", opposite a bottom 30 driven out at another end of said caseband 20, called “lower end”.
  • the crystal, the back 30 and the caseband 20 define a volume inside which a watch movement is arranged, in a manner known to those skilled in the art.
  • the bottom 30 has a generally circular shape and includes a body 31 from which extends radially a lip 32 forming a peripheral shoulder with respect to said body 31. More specifically, as shown in the sectional view of the figure 1 , the shoulder is formed by an axial annular bearing 310 of the body 31 and by a radial annular bearing 320 of the lip 32.
  • Said axial 310 and radial 320 annular bearing surfaces are provided to constitute bearing surfaces as described in more detail below.
  • the axial and radial directions are defined in the present text relative to the watch case 10, and in particular relative to the opening 21 of the middle part 20.
  • the axial direction extends from one to the other of the upper and lower ends of the middle part 20 and the radial direction extending perpendicularly to said axial direction.
  • the caseband 20 has an axial annular bearing 200 extending opposite the axial annular bearing 310 of the back 30.
  • This axial annular bearing 200 is connected to a radial annular bearing 201 bearing against radial annular bearing surface 320 of lip 32.
  • Radial annular bearing surface 201 of middle part 20 forms an end surface of said middle part 20 in the preferred embodiment of the invention shown in the figures.
  • An annular seal 40 is advantageously interposed between the axial annular bearing surfaces 200 and 310 respectively of the caseband 20 and of the back 30, and is compressed by one and the other of said axial annular bearing surfaces 200 and 310, as represented on the figure 1 .
  • This compression of the seal 40 makes it possible to impart water and air tightness to the watch case according to a desired level and generates a tightening force allowing the fixing of the back 30 on the middle part 20.
  • the axial annular bearing surfaces 200 and 310 of the caseband 20 and of the back 30 are of complementary shapes, and do not have a shape of revolution.
  • their respective peripheral profile comprises a first portion in the shape of an arc of a circle having a first radius R1, R2 and a second portion in the shape of an arc of a circle connected to the first portion and having a second radius r1, r2 less than the first radius R1, R2.
  • the first portions of the middle part 20 and of the bottom 30 are intended to rest opposite one another, just as the second portions of the middle part 20 and of the bottom 30 are intended to rest opposite one of the other. 'other.
  • the first and second rays R1, R2 and r1, r2 are represented on the figures 2 and 3 by arrows.
  • peripheral profile defines in the present text the projection of the axial annular bearing surfaces 200 and 310 respectively of the caseband 20 and of the back 30 on a plane P perpendicular to the axial direction and parallel to the radial direction.
  • the plane P is parallel to the radial annular bearing surfaces 201 and 320 of the caseband 20 and of the lip 32, as represented on the figures 1 and 2 .
  • the shape defined by the peripheral profile of the axial annular bearing surfaces 200 and 310 of the caseband 20 and of the back 30 is convex, in the sense that said bearing surfaces axial rings 200 and 310 are located respectively entirely on the same side of a tangent line applied at any point of their peripheral profile.
  • convex is used here in its definition specific to the field of geometry.
  • the values of the second radii r1, r2 of the second portions of the axial annular bearing surfaces 200 and 310 of the caseband 20 and of the back 30 are respectively greater than half the values of the first radii R1, R2 of the first portions of the middle 20 and the back 30.
  • This characteristic contributes to the continuity of the curved surfaces and therefore to preventing the shape of the peripheral profile of the axial annular bearing surfaces 200 and 310 from comprising any broken line or stop angle.
  • the difference between the values of the first and second radii R1 and r1 of the axial annular bearing 200 of the middle part 20, as well as the difference the difference between the values of the first and second radii R2 and r2 of the annular bearing axial 310 of the bottom 30, is of the order of a few millimeters or tenths of millimeters.
  • the shape of the axial annular bearing surfaces 200 and 310 of the caseband 20 and of the back 30 comprises several first and second portions in the form of arcs of circles distributed alternately, one after the other.
  • two first portions in the form of a successive arc of a circle are connected to each other by a second portion in the shape of an arc of a circle and two second portions in the shape of a successive arc of a circle are connected to each other by a first portion in the form of an arc of a circle.
  • the axial annular bearing surfaces 200, 310 of the caseband 20 and of the back 30 are configured so that the arrows of the first and second portions in the form of arcs of circles are separated from each other. another by an angle of 60 degrees.
  • the concept of an arrow of an arc of a circle is known to those skilled in the art. This angle easily acts as an effective polarizer allowing to orient a background in a case middle. A lack of orientation would be quickly perceptible and correctable for the operator.
  • the axial annular bearing surfaces 200 and 310 of the caseband 20 and of the back 30 comprise three first portions and three second portions in the form of arcs of circles alternately distributed one after the other.
  • the arrows of the portions in the form of arcs of circles define secant line segments at a point materializing the center of the opening 21.
  • the seal 40 has a peripheral profile complementary to those of the axial annular bearing surface 310 of the lip 32 and of the axial annular bearing surface 200 of the middle part 20.
  • the seal 40 has been shown with a rectangular cross section. In other exemplary embodiments of the invention, it may comprise a cross section of circular or other shape.
  • the radial annular bearing surface 320 of the bottom 30 may comprise an annular extra thickness 321 to receive the seal 40 in support, as shown in the figures 1 and 3 .
  • the radial annular bearing 201 of the caseband 20 bears against an end portion of the radial annular bearing 320 of the back 30.
  • the back 30 and the middle part 20 can be made of any suitable material, for example metal, such as steel or precious metal, ceramic, etc.
  • the seal 40 can also be made of any suitable material, such as polymer, having a hardness of 75 ⁇ 10 Shore D.
  • the peripheral profile of the axial annular bearing surfaces 200 and 310 of the caseband 20 and of the back 30 has more than two portions in the form of arcs of circles whose radii are different and/or that it comprises more of three first portions and more than three second portions in the form of arcs of circles alternately distributed one after the other.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Adornments (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
EP21211730.3A 2021-12-01 2021-12-01 Boite de montre comprenant un fond orienté dans une position angulaire prédéfinie Pending EP4191347A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP21211730.3A EP4191347A1 (fr) 2021-12-01 2021-12-01 Boite de montre comprenant un fond orienté dans une position angulaire prédéfinie
US17/943,756 US20230168633A1 (en) 2021-12-01 2022-09-13 Watch case comprising a back oriented in a predefined angular position
JP2022156067A JP7430231B2 (ja) 2021-12-01 2022-09-29 定義済み角位置で配向されたバックを備えた腕時計ケース
CN202211528457.0A CN116203818A (zh) 2021-12-01 2022-12-01 包括以预定角位置定向的底盖的表壳

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21211730.3A EP4191347A1 (fr) 2021-12-01 2021-12-01 Boite de montre comprenant un fond orienté dans une position angulaire prédéfinie

Publications (1)

Publication Number Publication Date
EP4191347A1 true EP4191347A1 (fr) 2023-06-07

Family

ID=78820798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21211730.3A Pending EP4191347A1 (fr) 2021-12-01 2021-12-01 Boite de montre comprenant un fond orienté dans une position angulaire prédéfinie

Country Status (4)

Country Link
US (1) US20230168633A1 (zh)
EP (1) EP4191347A1 (zh)
JP (1) JP7430231B2 (zh)
CN (1) CN116203818A (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1042457A (en) * 1962-06-05 1966-09-14 Manuf De Boites De Monters S G Watertight watchcase
EP1278108A1 (fr) * 2001-07-18 2003-01-22 The Swatch Group Management Services AG Dispositif de réglage de l'alignement d'un fond se vissant sur la carrure d'une boíte de montre par rapport à un axe 12H-6H
US20130329537A1 (en) * 2012-06-06 2013-12-12 Omega Sa Exterior element with improved fastening
US20160252882A1 (en) * 2015-02-27 2016-09-01 Eta Sa Manufacture Horlogere Suisse Plastic or electroformed watch case with removable crystal

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH685526B5 (fr) * 1993-12-23 1996-02-15 Smh Management Services Ag Boîte de montre.
JP2010127683A (ja) * 2008-11-26 2010-06-10 Seiko Instruments Inc 携帯時計
JP2012198029A (ja) * 2011-03-18 2012-10-18 Citizen Holdings Co Ltd 太陽電池付き電子腕時計
JP5906614B2 (ja) * 2011-08-31 2016-04-20 セイコーエプソン株式会社 時計
EP2796942A1 (fr) * 2013-04-23 2014-10-29 ETA SA Manufacture Horlogère Suisse Methode de fixation d'un mouvement dans un boîtier
CH712740B1 (fr) * 2016-07-26 2020-08-31 Omega Sa Sous-ensemble d'habillage pour pièce d'horlogerie, notamment une montre, ou pour bijou.
JP7238468B2 (ja) * 2019-02-28 2023-03-14 セイコーエプソン株式会社 時計用外装部品および時計

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1042457A (en) * 1962-06-05 1966-09-14 Manuf De Boites De Monters S G Watertight watchcase
EP1278108A1 (fr) * 2001-07-18 2003-01-22 The Swatch Group Management Services AG Dispositif de réglage de l'alignement d'un fond se vissant sur la carrure d'une boíte de montre par rapport à un axe 12H-6H
US20130329537A1 (en) * 2012-06-06 2013-12-12 Omega Sa Exterior element with improved fastening
US20160252882A1 (en) * 2015-02-27 2016-09-01 Eta Sa Manufacture Horlogere Suisse Plastic or electroformed watch case with removable crystal

Also Published As

Publication number Publication date
JP7430231B2 (ja) 2024-02-09
JP2023081832A (ja) 2023-06-13
US20230168633A1 (en) 2023-06-01
CN116203818A (zh) 2023-06-02

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