EP1722283A1 - Uhr mit Mittel zur Verbesserung des Widerstands des Glases gegenüber Stossen - Google Patents

Uhr mit Mittel zur Verbesserung des Widerstands des Glases gegenüber Stossen Download PDF

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Publication number
EP1722283A1
EP1722283A1 EP05103932A EP05103932A EP1722283A1 EP 1722283 A1 EP1722283 A1 EP 1722283A1 EP 05103932 A EP05103932 A EP 05103932A EP 05103932 A EP05103932 A EP 05103932A EP 1722283 A1 EP1722283 A1 EP 1722283A1
Authority
EP
European Patent Office
Prior art keywords
bezel
watch
flange
radial
wall
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.)
Withdrawn
Application number
EP05103932A
Other languages
English (en)
French (fr)
Inventor
Baptist Wyssbrod
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
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP05103932A priority Critical patent/EP1722283A1/de
Priority to US11/382,596 priority patent/US7384189B2/en
Priority to CN200610080206A priority patent/CN100589048C/zh
Priority to JP2006132360A priority patent/JP4782609B2/ja
Publication of EP1722283A1 publication Critical patent/EP1722283A1/de
Priority to HK07102560.9A priority patent/HK1095640A1/xx
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a watch comprising a case provided with a caseband and a mirror attached to the caseband by means of a peripheral bezel.
  • the invention more particularly relates to a watch comprising a housing which comprises a middle part, an ice, and a display dial, of the type in which the crystal comprises an outer radial flange which bears axially against the middle part and which is retained axially. against the middle part by means of a peripheral bezel fixed to the middle part, the bezel having a lower annular radial surface which abuts axially against the upper face of the collar.
  • Watches are already known in which the ice is attached to the middle part by means of a telescope.
  • the document US 6688492 describes and shows a watch having a flat ice which is fixed on the middle part by driving a bezel in a groove formed in the upper face of the middle part.
  • the bezel has an internal shoulder which bears axially against the upper radial face of a radial flange of the ice to keep it pressed against the middle part.
  • These deformations of the ice can be at the origin of cracks, even of breaks. These cracks may in particular be due to the coming into contact of the central portion of the ice with the upper end of the axis of the display needles of the watch, or the internal stresses in the material constituting the ice.
  • the invention aims in particular to remedy these disadvantages simply and economically.
  • the invention provides a watch of the type described above, characterized in that the flange comprises a convex outer peripheral surface which is generally complementary to a concave inner surface of the bezel arranged vis-à-vis, under the radial bearing surface of the bezel, and which bears radially against said inner surface in the event of axial impact applied to the ice.
  • the watch crystal according to the invention therefore has improved impact resistance.
  • pre-centering means at the level of the flange of the ice to ensure proper positioning of the ice relative to the middle part, before mounting the bezel, otherwise there is a risk deterioration of the ice by the telescope, or an impossibility of assembly.
  • These pre-centering means can be the source of a premature failure of the ice because of the significant deformation caused by an axial impact.
  • the lower radial face of the flange comprises, on the side of the inner peripheral edge of the flange, at least one positioning pin which extends downwards between the dial. and the inner axial wall of the middle part, and the radial distance between the lug and the inner axial wall of the middle part is greater than the radial distance between the external surface of the collar and the internal surface of the bezel so that, in axial impact case, the outer surface of the flange comes into radial support against the inner surface of the bezel before the lug comes into contact with the inner axial wall of the middle part.
  • the outer surface of the collar and the inner surface of the bezel have complementary frustoconical shapes.
  • the middle part comprises an outer peripheral rim having a substantially frustoconical concave inner wall of increasing diameter downwards
  • the bezel comprises a heel ring which is driven axially, from top to bottom, in the middle so that the outer peripheral wall of the heel is radially pressed against the inner wall of the flange, and in that the inner surface of the bezel is constituted by the inner wall heel.
  • This feature allows the middle to support the forces applied to the inner surface of the bezel by the ice.
  • the outer wall of the heel has a frustoconical shape which defines an angle less than the angle defined by the inner surface of the bezel.
  • This feature allows to chase the telescope in the middle without the risk of overloading the ice.
  • FIG 1 there is shown a watch 10 which is made according to the teachings of the invention.
  • the watch 10 comprises a housing 12 which has a middle 14, an ice 16, and a dial 18 display.
  • the housing 12 is also equipped with a peripheral bezel 20 which is force-fitted into the middle part 14 so as to axially retain the window 16 against the middle part 14.
  • the outer surface of the ice 16 here has a globally convex hemispherical shape.
  • the housing 12 here of globally cylindrical shape, contains a watch movement 22 which is arranged under the dial 18 and which controls the means 24 of analog display here constituted by needles 24 rotatably mounted about a central vertical axis A1.
  • a projecting central portion 26 of the analog display means 24 is constituted by the end 26 of the axis of the second wheel, which carries the seconds hand.
  • the projecting portion 26 may be constituted by another element such as a central fixed pin, or the central part of a needle.
  • middle part 14 comprises an outer peripheral rim 28 which defines a substantially frustoconical concave inner wall 30 of decreasing diameter towards the bottom.
  • the telescope 20 comprises a lower annular bead 32 which is driven axially, from top to bottom, in the middle part 14 so that the outer peripheral wall 34 of the bead 32 is radially pressed against the inner wall 30 of the rim 28.
  • the window 16 has an external radial flange 36 which bears axially against its radial lower face 38 against an annular radial surface 40 extending from the middle portion 14. This radial bearing surface 40 is delimited inwards by the wall internal axial 42 of the middle part 14.
  • the telescope 20 has a lower annular radial surface 44 which bears axially against the upper face 46 of the flange 36, which makes it possible to axially clamp the flange 36 between the radial surface 44 of the telescope 20 and the radial bearing surface 40 14 of the middle to ensure the axial retention of the ice 16 against the middle part 14.
  • the radial bearing surface 44 is arranged in a portion of the telescope 20 situated above the heel 32.
  • the radial bearing surface 40 is substantially aligned axially with the radial bearing surface 44 of the telescope 20.
  • the middle part 14 comprises an annular groove 48 which is interposed radially between the radial bearing surface 40 and the outer peripheral rim 28, and which receives an annular sealing seal 50 of the "O-ring” type. ".
  • the seal 50 is compressed between the middle part 14 and the lower radial face 38 of the flange 36.
  • the flange 36 has a convex outer peripheral surface 52 which is generally complementary to a concave internal surface 54 of the bezel 20 arranged facing the lower radial support surface 44 of the telescope 20, which bears radially against said inner surface 54 in the event of an axial impact applied to the window 16.
  • a radial clearance D2 is arranged between the outer surface 52 of the collar 36 and the inner surface 54 of the telescope 20.
  • this radial clearance D2 may be zero, which corresponds to the case of axial shock shown in FIG.
  • the lower radial face 38 of the flange 36 comprises, on the side of the inner peripheral edge 56 of the flange 36, at least one positioning pin 58 which extends downwards.
  • the radial distance D1 between the lug 58 and the inner axial wall 42 of the middle part 14 is greater than the radial distance D2 between the outer surface 52 of the flange 36 and the inner surface 54 of the seat 20.
  • the glass 16 has a plurality of lugs 58 which are distributed angularly in a regular manner.
  • These lugs 58 each have the shape of a generally frustoconical stud and they are designed to cooperate by sliding with the adjacent edge of the middle part 14 and / or with the outer peripheral edge 60 of the dial 18 so as to ensure the pre-centering of the window 16 with respect to the middle part 14 during the mounting of the window 16 on the housing 12, before the mounting of the window 20.
  • the lugs 58 may also allow the angular indexing of the window 16 relative to the dial 18, when they are associated with notches arranged in the outer peripheral edge 60 of the dial 18.
  • the outer surface 52 of the collar 36 and the inner surface 54 of the telescope 20 have complementary frustoconical shapes for a better distribution of the mechanical stresses during an axial impact on the ice 16. These frustoconical surfaces are of diameter growing down.
  • the inner surface 54 of the telescope 20 is constituted by the inner wall of the heel 32.
  • the outer wall 34 of the heel 32 has a frustoconical shape which defines, with respect to the axis A1, an angle less than the angle defined by its inner surface 54 of the heel 32. This characteristic makes it possible not to constrain the ice 16 during the hunting of the telescope 20 in the middle part 14.
  • the middle part 14 here comprises an annular radial surface 62 which is interposed between the annular groove 48 and the inner wall 30 of the flange 28.
  • the heel 32 is provided to abut axial against this radial surface 62 by its lower free end, which also avoids overloading the ice 16 at the end of the hunting.
  • the central part of the window 16 deforms downwards and tends to approach the projecting central portion 26. This deformation causes the collar 36 to slide radially outwards until its outer surface 52 comes into radial abutment against the inner surface 54 of the telescope 20.
  • the radial sliding of the flange 36 stops before the lugs 58 come into contact with the middle part 14, which reduces the risk of rupture of the glass 16.
  • the stopping the radial sliding of the flange 36 limits the axial displacement of the central portion of the lens 16 towards the projecting central portion 26, which also reduces the risk of breaking the lens 16.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
EP05103932A 2005-05-11 2005-05-11 Uhr mit Mittel zur Verbesserung des Widerstands des Glases gegenüber Stossen Withdrawn EP1722283A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP05103932A EP1722283A1 (de) 2005-05-11 2005-05-11 Uhr mit Mittel zur Verbesserung des Widerstands des Glases gegenüber Stossen
US11/382,596 US7384189B2 (en) 2005-05-11 2006-05-10 Watch including means for improving the shock resistance of the crystal
CN200610080206A CN100589048C (zh) 2005-05-11 2006-05-11 包含用于提高表面玻璃的抗震强度的装置的手表
JP2006132360A JP4782609B2 (ja) 2005-05-11 2006-05-11 クリスタルの耐衝撃性を向上させる手段を含む時計
HK07102560.9A HK1095640A1 (en) 2005-05-11 2007-03-08 Watch including means for improving the shock resistance of the crystal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05103932A EP1722283A1 (de) 2005-05-11 2005-05-11 Uhr mit Mittel zur Verbesserung des Widerstands des Glases gegenüber Stossen

Publications (1)

Publication Number Publication Date
EP1722283A1 true EP1722283A1 (de) 2006-11-15

Family

ID=36061505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05103932A Withdrawn EP1722283A1 (de) 2005-05-11 2005-05-11 Uhr mit Mittel zur Verbesserung des Widerstands des Glases gegenüber Stossen

Country Status (5)

Country Link
US (1) US7384189B2 (de)
EP (1) EP1722283A1 (de)
JP (1) JP4782609B2 (de)
CN (1) CN100589048C (de)
HK (1) HK1095640A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2261757A1 (de) * 2009-06-10 2010-12-15 ETA SA Manufacture Horlogère Suisse Verfahren und Vorrichtung zur Befestigung eines Glases an einem Glasreif

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2360537B1 (de) * 2010-02-15 2014-04-09 ETA SA Manufacture Horlogère Suisse Verfahren und Vorrichtung zur Fixierung eines Glases mit Gegenplatte
EP2485100A1 (de) * 2011-02-08 2012-08-08 ETA SA Manufacture Horlogère Suisse Armband mit einem Glasdeckel, und Befestigungsverfahren dieses Glasdeckels
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
FI126264B (en) 2013-09-10 2016-09-15 Suunto Oy Electronic display designed for underwater use

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1486064A (fr) * 1966-07-06 1967-06-23 Montre étanche
US4257118A (en) * 1978-01-24 1981-03-17 Citizen Watch Co., Ltd. Watch case
EP1089143A1 (de) * 1999-09-28 2001-04-04 Eta SA Fabriques d'Ebauches Uhr mit einem in einem Gehäusering eingebauten Uhrwerk

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL202713A (de) 1955-12-09
JPS505590B1 (de) * 1970-03-10 1975-03-05
JPS5370248A (en) * 1976-12-02 1978-06-22 Mitsubishi Heavy Ind Ltd Closed circuit system forced lubrication device for nill spindle
SG96198A1 (en) * 2000-02-24 2003-05-23 Asulab Sa Portable object such as, in particular, a timepiece, including a piezoelectric transducer for entering data manually

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1486064A (fr) * 1966-07-06 1967-06-23 Montre étanche
US4257118A (en) * 1978-01-24 1981-03-17 Citizen Watch Co., Ltd. Watch case
EP1089143A1 (de) * 1999-09-28 2001-04-04 Eta SA Fabriques d'Ebauches Uhr mit einem in einem Gehäusering eingebauten Uhrwerk

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2261757A1 (de) * 2009-06-10 2010-12-15 ETA SA Manufacture Horlogère Suisse Verfahren und Vorrichtung zur Befestigung eines Glases an einem Glasreif
US8764283B2 (en) 2009-06-10 2014-07-01 Eta Sa Manufacture Horlogère Suisse Process and device for fastening a glass to a bezel

Also Published As

Publication number Publication date
US20060256667A1 (en) 2006-11-16
US7384189B2 (en) 2008-06-10
JP4782609B2 (ja) 2011-09-28
HK1095640A1 (en) 2007-05-11
CN100589048C (zh) 2010-02-10
JP2006317447A (ja) 2006-11-24
CN1862419A (zh) 2006-11-15

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