US3733807A - Watertight watch case - Google Patents

Watertight watch case Download PDF

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Publication number
US3733807A
US3733807A US00256487A US3733807DA US3733807A US 3733807 A US3733807 A US 3733807A US 00256487 A US00256487 A US 00256487A US 3733807D A US3733807D A US 3733807DA US 3733807 A US3733807 A US 3733807A
Authority
US
United States
Prior art keywords
crystal
case
bezel
support ring
watch case
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
US00256487A
Other languages
English (en)
Inventor
H Nozawa
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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
Priority claimed from JP4746871U external-priority patent/JPS487071U/ja
Priority claimed from JP1971047470U external-priority patent/JPS5138782Y2/ja
Application filed by Seiko Instruments Inc filed Critical Seiko Instruments Inc
Application granted granted Critical
Publication of US3733807A publication Critical patent/US3733807A/en
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
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
    • G04B39/02—Sealing crystals or glasses
    • 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
    • G04B37/084—Complete encasings for wrist or pocket watches without means for hermetic sealing of winding stem or crown

Definitions

  • ABSTRACT (22] Filed: May 24,1972
  • a watertight watch case wherein a bezel is inserted [2]] Appl. N0.: 256,487 into a space formed between a case body and and a crystal-support ring such that the bezel watertightly [30]
  • F orelgn Apphcatlon Pnomy D am presses first and second sealing gaskets respectively June 5, 1971 Japan ..46/47468 mounted Within a first groove Provided the Outer June 5, I97] Japan ..46/47470 surface of the y pp ring and Within a Second groove provided on the inner surface of the case body.
  • Prior Art Conventional waterproof watch cases have been constructed in such a manner that a crystal-support ring on which a crystal is secured by means of an adhesive material is fixedon a case body through a gasket in fitted manner, and is pressed by a bezel mounted on the same horizontal surface of the'case body.
  • the crystal is directly fixed to a bezel by means of an adhesive material, which is fitted adjacent an inner peripheral portion of the case body through the gasket.
  • these constructions have many deficiencies among which is that the width ofthe bezel is very large and therefore the bezel becomes deformed or separated from the crystal when the bezel is assembled or disassembled, sothat the watertightness is disadvantageously lost.
  • An object of the present invention is to provide a watertight watch case in which the bezel is separate from I the crystal and is fixedly mounted adjacent an inner peripheral portion of the case body.
  • Another object of the present invention is to provide a watertight watch case which is of low cost.
  • the invention contemplates a watertight watch case comprising a case body serving as a case band and a back case and havingan inner peripheral surface with a groove, a first sealing gasket in said groove, a case ringhoused within said case body, a crystal-support ring having an outer surface with a groove, a second sealing gasket in said groove of the crystal-support ring, saidcrystal-support ring being mounted on said case ring, a crystal mounted on said crystal-support ring, and bezel means forceably inserted in a space provided between said crystal-support ring and said case body to clamp said rings together and hold the same in said case body, while pressing against said first and second sealing gaskets in watertight sealing relation.
  • FIG. 1 is a longitudinal sectional view showing one embodiment of a watertight watch case according to the present invention.
  • the bezel 9 is fixed in the case body 1 in the following manner: the case ring 2 is mounted on the case body 1, and then the crystal-support ring 4 together with the crystal 6 is mounted on the rectangular gasket 5 on case ring 2. It is to be noted that gaskets 8 and 10 are disposed in the grooves 7 and 1b, respectively.
  • the projection 9a of the bezel 9' is inserted by being pressed into the space between the case body 1 and the crystal-support ring 4 so that the portion 9b may interfit with the inner peripheral wall of the case body, while a flange 9c of the bezel 9 is pressed against the upper surface of the ring 4.
  • the insertion of the bezel into the space causes the gaskets 10 and 8 disposed in the grooves 1b and 7 respectively to be compressed, while the rectangular gasket 5 is also compressed in the axial direction so that a watertight connection is assuredly guaranteed.
  • the bezel is disassembledin the following manner: the top portion of a tool with a sharp end such as a pincette is inserted into an aperture 9d provided on the lower surface of the bezel 9, and the bezel is thrust upwardly by the tool to extract the projection 9a of the bezel 9 from the space between the ring 4 and body 1.
  • FIG. 2 therein is shown another embodiment of the present invention where a bezel 19 having a projection 19a extending downwardly from the lower edge thereof is pressed into the periphery of a case body Hand is in pressure contact with a gasket 20 made from a hard plastic material such as Teflon or a polyester.
  • a crystal 16 is joined by an adhesive 14a to a crystal-support ring 14.
  • FIG. 2 is a longitudinal sectional view showing another embodiment of a watertight case according to the present invention.
  • DETAILED DESCRIPTION projection 19a presses against the inner peripheral surface of the gasket 20 so that the gasket 20 is tightly fitted in an L-shaped portion of the case body, and further a flange 19b of the bezel l9 presses on a flange 16a of crystal 16.
  • the pressing action of the bezel 19 causes a gasket 18 disposed in a groove 17 of ring 14 to be compressed by the inner peripheral surface of the projection 19a, while a gasket 15 is axially compressed. This assures watertightness in even a more pronounced degree than the embodiment described in FIG. 1.
  • the bezel 19 may be disassembled in the same manner as described with reference to the first embodiment, by engagement with the aperture 19c.
  • the watertight watch case ac cording to the present invention brings about the following advantages: the width of the bezel becomes very small because the bezel is fixedly mounted against the inner periphery of the case body; watertightness can be assured irrespective of any partial deformation of the bezel upon the mounting thereof in assembling the timepiece because the bezel only serves to fix the crystal and it is separate therefrom; a strong attachment force between the bezel and case body can be obtained because the bezel is fixedly coupled to the inner periphery of the case body in fitted manner; and assembly or disassembly of the bezel is easy because the bezel is inserted between gaskets made of a plastic material.
  • a watertight watch case comprising a case body serving as a case band and a back cover and having an inner peripheral surface with a groove, a first sealing gasket in said groove, a case ring housed within said case body, a crystal-support ring having an outer surface with a groove, a second sealing gasket in said groove of the crystal-support ring, said crystal-support ring being mounted on said case ring, a crystal mounted on said crystal-support ring and bezel means forceably inserted in a space provided between said crystalsupport ring and said case body to clamp said rings together and hold the same in said case body, while pressing against said first and second sealing gaskets in watertight sealing relation.
  • a watch case as claimed in claim 1 comprising a third sealing gasket between the crystal support ring and said case ring, said bezel means compressing said third sealing gasket when forceably inserted into said space.
  • a watch case as claimed in claim 2 wherein said bezel means comprises a bezel member having an outer profiled surface, said case body having an inner surface of corresponding shape as said outer profiled surface.
  • said bezel means comprises a bezel member having an aperture which is disposed outside the case body when the bezel means is operatively inserted in said space, said bezel member being removable by engagement of a tool in said aperture to lift the bezel member from said space.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electric Clocks (AREA)
  • Joining Of Glass To Other Materials (AREA)
US00256487A 1971-06-05 1972-05-24 Watertight watch case Expired - Lifetime US3733807A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4746871U JPS487071U (enExample) 1971-06-05 1971-06-05
JP1971047470U JPS5138782Y2 (enExample) 1971-06-05 1971-06-05

Publications (1)

Publication Number Publication Date
US3733807A true US3733807A (en) 1973-05-22

Family

ID=26387640

Family Applications (1)

Application Number Title Priority Date Filing Date
US00256487A Expired - Lifetime US3733807A (en) 1971-06-05 1972-05-24 Watertight watch case

Country Status (3)

Country Link
US (1) US3733807A (enExample)
CH (2) CH830072A4 (enExample)
GB (1) GB1361321A (enExample)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4110970A (en) * 1975-11-11 1978-09-05 Citizen Watch Company Limited Water-proof watch case
EP0129274A1 (fr) * 1983-06-03 1984-12-27 Guillod Gunther S.A. Boîte de montre étanche
US4626108A (en) * 1984-06-07 1986-12-02 Gebruder Junghans Gmbh Wristwatch with seal
US4853910A (en) * 1985-10-07 1989-08-01 Eta Sa Fabriques D'ebauches Timepiece having case formed of rock-like material
US5822192A (en) * 1995-06-20 1998-10-13 Alps Electric Co. Ltd. Case sealing structure and assembling method therefor
EP1089143A1 (fr) * 1999-09-28 2001-04-04 Eta SA Fabriques d'Ebauches Pièce d'horlogerie comprenant un mouvement monté dans un cercle d'encageage
US6357908B1 (en) 1999-09-28 2002-03-19 Eta Sa Fabriques D' Ebauches Timepiece including a movement mounted in a casing ring
CN107870552A (zh) * 2017-05-16 2018-04-03 深圳市飞亚达精密计时制造有限公司 手表拆卸工具、拆卸方法和手表结构
CN109407497A (zh) * 2018-12-07 2019-03-01 歌尔科技有限公司 密封圈、手表壳体组件的密封方法及手表壳体组件

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4110970A (en) * 1975-11-11 1978-09-05 Citizen Watch Company Limited Water-proof watch case
EP0129274A1 (fr) * 1983-06-03 1984-12-27 Guillod Gunther S.A. Boîte de montre étanche
US4626108A (en) * 1984-06-07 1986-12-02 Gebruder Junghans Gmbh Wristwatch with seal
US4853910A (en) * 1985-10-07 1989-08-01 Eta Sa Fabriques D'ebauches Timepiece having case formed of rock-like material
US5822192A (en) * 1995-06-20 1998-10-13 Alps Electric Co. Ltd. Case sealing structure and assembling method therefor
EP1089143A1 (fr) * 1999-09-28 2001-04-04 Eta SA Fabriques d'Ebauches Pièce d'horlogerie comprenant un mouvement monté dans un cercle d'encageage
US6357908B1 (en) 1999-09-28 2002-03-19 Eta Sa Fabriques D' Ebauches Timepiece including a movement mounted in a casing ring
CN1322380C (zh) * 1999-09-28 2007-06-20 Eta草图制造公司 含有安装在壳环内的机芯的计时件
CN107870552A (zh) * 2017-05-16 2018-04-03 深圳市飞亚达精密计时制造有限公司 手表拆卸工具、拆卸方法和手表结构
CN107870552B (zh) * 2017-05-16 2024-02-27 深圳市飞亚达精密科技有限公司 手表拆卸工具、拆卸方法和手表结构
CN109407497A (zh) * 2018-12-07 2019-03-01 歌尔科技有限公司 密封圈、手表壳体组件的密封方法及手表壳体组件
CN109407497B (zh) * 2018-12-07 2023-10-13 歌尔科技有限公司 密封圈、手表壳体组件的密封方法及手表壳体组件

Also Published As

Publication number Publication date
GB1361321A (en) 1974-07-24
CH830072A4 (enExample) 1976-01-30
CH577205B5 (enExample) 1976-06-30

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