US3858388A - Crystal mounting structure for a water-proof watch - Google Patents

Crystal mounting structure for a water-proof watch Download PDF

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Publication number
US3858388A
US3858388A US462089A US46208974A US3858388A US 3858388 A US3858388 A US 3858388A US 462089 A US462089 A US 462089A US 46208974 A US46208974 A US 46208974A US 3858388 A US3858388 A US 3858388A
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US
United States
Prior art keywords
crystal
bezel
ring
case
projection
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
US462089A
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English (en)
Inventor
Yoshiaki Fujimori
Kanji Miyashita
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.)
Suwa Seikosha KK
Original Assignee
Suwa Seikosha KK
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 Suwa Seikosha KK filed Critical Suwa Seikosha KK
Application granted granted Critical
Publication of US3858388A publication Critical patent/US3858388A/en
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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

Definitions

  • ABSTRACT A crystal mounting structure for a water-proof watch
  • Foreign Application Priority Data comprising a bezel provided with a pro ection having A r 23 1973 la an 4847551 an inner diameter smaller than the outer diameter ofa p p glass crystal.
  • a first sealing member is interposed between the bezel and glass crystal and a second sealing member is interposed between the bezel and a case.
  • a [58] Fi 58/90 R 9] mounting ring is provided between the glass crystal 8 o a c and the case for holding the glass crystal on the surface thereof opposite the projection whereby the crys- [56] SE ZE SZP tal is clamped between the projection and the ring. 3,688,492 9/1972 Yaba na 58/91 10 Claims, 2 Drawing Figures Patented Jan. 7, 1975 PRIOR ART BACKGROUND 1.
  • the invention relates to structure for removably mounting a watch crystal for a water-proof watch, and particularly a structure which avoids any adhesive connection between the crystal and the mounting structure.
  • a glass crystal is secured at its periphery to a ring by means of an adhesive and the ring is engaged with a case by a bezel, a gasket being disposed between the ring and the case.
  • the adhesive is utilized to secure the glass crystal and to provide a water-proof connection between the glass crystal and the ring and thereby the adhesive has to be strong and reliable.
  • An object of the invention is to provide a mounting structure for a crystal of a water-proof watch which avoids the need for any adhesive between the crystal and the mounting structure thereby obviating the deficiencies associated therewith.
  • the invention contemplates a crystal mounting structure for a water-proof watch comprising a case,'a bezel mountable in said case, and a crystal having an outer periphery disposed within said bezel.
  • the bezel includes a projection overlying said crystal and having a diameter less than the outer diameter thereof.
  • a first sealing member is interposed between said crystal and said bezel and a second sealing member is interposed between said bezel and said case.
  • a ring is disposed between said case and said crystal on the side of the crystal opposite the engagement thereof with said projection in order to clamp the crystal between the ring and the projection on the bezel.
  • the crystal freely rests on the ring without any adhesive therebetween.
  • the sealing members can be received in respective recesses in the bezel and project from opposite sides thereof.
  • FIG. 1 is a cross-sectional view of the mounting structure at the outer periphery of a glass crystal of a watch according to the prior art
  • FIG. 2 is a corresponding cross-sectional of one embodiment according to the invention.
  • FIG. 1 therein is seen a crystal 1 of glass or suitable transparent material which is mounted on a ring 2 and secured thereto by a layer of adhesive 4.
  • the ring 2 is secured to a case 6 by means of an annular bezel 3.
  • the case 6 may be part of the watch housing or a ring secured thereto.
  • a gasket 5 is interposed between ring 2 and case 6.
  • the adhesive layer 4 serves to secure the glass crystal in place while also furnishing a water-proof seal between the crystal and the ring 2, the adhesive must be strong and reliable.
  • the adhesive must be applied over a relatively wide extent and this mars the appearance since the adhesive is visible beneath the crystal.
  • any adhesive forced out between the crystal and the ring during the mounting operation must be removed as it is unsightly.
  • careful control and a number of operations are required.
  • the crystal 1 when replaced, it must be replaced with the ring 2 secured thereto which is costly.
  • the crystal is shown at 7 and numeral 8 represents the bezel.
  • a projection 8a is formed on the upper portion of the bezel and the projection has an inner diameter slightly smaller than the outer diameter of the crystal 7.
  • the bezel includes an engaging portion 8b at its lower end with an inclined face for engaging a corresponding inclined face of a slot formed in case 9.
  • a sealing member 10 is received in a recess in the bezel for being interposed between the outer periphery of the crystal and the inner periphery of the bezel 8, and a sealing member I] is received in a corresponding recess in the bezel for being interposed between the case 11 and the bezel 8.
  • These sealing members are elastic members made of synthetic rubber, synthetic resin or soft metal.
  • a ring 12 is disposed between the lower surface of the crystal and the case 9 within the bezel 8. The ring 12 may be forced into the bezel 8 with interference.
  • a water-proof condition is established between the crystal and the bezel by the sealing member 10, and a water-proof condition is established between the bezel and the case by the sealing member 11.
  • These sealing members are compressed in the diametral direction.
  • the crystal 7 is held by and between the upper projection 8a of the bezel and the ring 12. It is held steadily by the projection 8a against upward forces and by the ring 12 against downward forces.
  • the bezel 8 is secured to the case by its engaging portion 8b. As described, the portion 8b has an inclined face in contact with the case and this serves to enhance the engagement therebetween and resist upward movement of the bezel.
  • the assembly of the structure is as follows:
  • the sealing member 10 is initially secured in the recess in the bezel 8.
  • the crystal 7 is inserted into the bezel in the direction from the engaging portion 8b, namely by being inserted upwardly.
  • sealing member 11 is mounted in the corresponding recess in the bezel 8.
  • the ring 12 is mounted on the case 9, and the bezel with the crystal and the two sealing members is secured to the case by insertion of its engaging portion 8b into the slot of the case to effect engagement between the inclined faces thereof.
  • the crystal is securely and reliably held in place against upward removal by contact with the projection 8a of the bezel and the ring 12 holds the crystal and prevents downward displacement thereof.
  • the bearing surface of ring 12 is not as wide as the conventional adhesive layer. Accordingly the external appearance around the periphery of the crystal can be kept simple.
  • the crystal bears against a relatively narrow planar surface of the ring 12 and the ring has oppositely sloped surfaces at the inner and outer edges of the planar surface.
  • the crystal alone can be replaced at relatively lower cost than the arrangement where the crystal is adhesively secured to the ring and they must be replaced together.
  • the sealing member 11 between the bezel and the case is compressed in the diametral direction, however, this sealing member may be compressed in the vertical direction to obtain the same effect.
  • Crystal mounting structure for a water-proof watch comprising a case, a bezel mountable in said case, a crystal having an outer periphery disposed within said bezel, said bezel including a projection overlying said crystal and having a diameter less than the outer diameter thereof, a first sealing member interposed between said crystal and said bezel, a second sealing member interposed between said bezel and said case, and a ring disposed between said case and said crystal on the side of the crystal opposite the engagement thereof with said projection.
  • bezel includes a second projection having an inclined face engageable with said case.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Adornments (AREA)
  • Paper (AREA)
  • Gasket Seals (AREA)
  • Packages (AREA)
US462089A 1973-04-23 1974-04-18 Crystal mounting structure for a water-proof watch Expired - Lifetime US3858388A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973047551U JPS5316380Y2 (de) 1973-04-23 1973-04-23

Publications (1)

Publication Number Publication Date
US3858388A true US3858388A (en) 1975-01-07

Family

ID=12778283

Family Applications (1)

Application Number Title Priority Date Filing Date
US462089A Expired - Lifetime US3858388A (en) 1973-04-23 1974-04-18 Crystal mounting structure for a water-proof watch

Country Status (5)

Country Link
US (1) US3858388A (de)
JP (1) JPS5316380Y2 (de)
CH (1) CH607868B (de)
GB (1) GB1441070A (de)
HK (1) HK52678A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934402A (en) * 1973-12-05 1976-01-27 Yoshiaki Fujimori Structure of bezel portion of water-tight timepiece
US3950937A (en) * 1973-12-25 1976-04-20 Kabushiki Kaisha Suwa Seikosha Structure of water-tight watch case
US4206591A (en) * 1977-05-31 1980-06-10 Citizen Watch Co., Ltd. Watchglass fixing structure for timepiece
US4222228A (en) * 1976-10-28 1980-09-16 Kabushiki Kaisha Daini Seikosha Waterproofed watchcase construction
US4308611A (en) * 1978-04-28 1981-12-29 Citizen Watch Co., Ltd. Mounting structure for the glass in the watch case
US4391534A (en) * 1979-01-27 1983-07-05 Citizen Watch Co., Ltd. Glass mounting structure for watches
US20030174589A1 (en) * 2002-03-15 2003-09-18 Hiroshi Kawamata Wrist mounting type portable appparatus having bangle type strap
US10345760B2 (en) * 2016-12-21 2019-07-09 Casio Computer Co., Ltd. Device case and timepiece
EP3839663A1 (de) * 2019-12-20 2021-06-23 Rolex Sa Uhrorgan für gehäuse einer uhr oder uhr
US11553608B2 (en) * 2019-12-20 2023-01-10 Samsung Electronics Co., Ltd. Wearable electronic device including ventilation and waterproof structure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5545354Y2 (de) * 1974-12-26 1980-10-24
JPS5544222Y2 (de) * 1975-12-19 1980-10-17

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688492A (en) * 1970-03-10 1972-09-05 Suwa Seikosha Kk Bezel, crystal and case assembly in a water-proof watch
US3744238A (en) * 1970-09-26 1973-07-10 Suwa Seikosha Kk Rectangular watertight watch case
US3817025A (en) * 1971-09-30 1974-06-18 Wenger Ed Sa Fluid tight mounting of crystal in watch case

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688492A (en) * 1970-03-10 1972-09-05 Suwa Seikosha Kk Bezel, crystal and case assembly in a water-proof watch
US3744238A (en) * 1970-09-26 1973-07-10 Suwa Seikosha Kk Rectangular watertight watch case
US3817025A (en) * 1971-09-30 1974-06-18 Wenger Ed Sa Fluid tight mounting of crystal in watch case

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934402A (en) * 1973-12-05 1976-01-27 Yoshiaki Fujimori Structure of bezel portion of water-tight timepiece
US3950937A (en) * 1973-12-25 1976-04-20 Kabushiki Kaisha Suwa Seikosha Structure of water-tight watch case
US4222228A (en) * 1976-10-28 1980-09-16 Kabushiki Kaisha Daini Seikosha Waterproofed watchcase construction
US4206591A (en) * 1977-05-31 1980-06-10 Citizen Watch Co., Ltd. Watchglass fixing structure for timepiece
US4308611A (en) * 1978-04-28 1981-12-29 Citizen Watch Co., Ltd. Mounting structure for the glass in the watch case
US4391534A (en) * 1979-01-27 1983-07-05 Citizen Watch Co., Ltd. Glass mounting structure for watches
US20030174589A1 (en) * 2002-03-15 2003-09-18 Hiroshi Kawamata Wrist mounting type portable appparatus having bangle type strap
US6796708B2 (en) * 2002-03-15 2004-09-28 Seiko Instruments Inc. Wrist mounting-type portable electronic apparatus having bangle-type strap
US10345760B2 (en) * 2016-12-21 2019-07-09 Casio Computer Co., Ltd. Device case and timepiece
EP3839663A1 (de) * 2019-12-20 2021-06-23 Rolex Sa Uhrorgan für gehäuse einer uhr oder uhr
US11553608B2 (en) * 2019-12-20 2023-01-10 Samsung Electronics Co., Ltd. Wearable electronic device including ventilation and waterproof structure
US11966199B2 (en) 2019-12-20 2024-04-23 Rolex Sa Timepiece component for a timepiece case or for a timepiece

Also Published As

Publication number Publication date
GB1441070A (en) 1976-06-30
DE2419533A1 (de) 1974-11-14
CH607868B (fr)
DE2419533B2 (de) 1977-06-02
JPS49148972U (de) 1974-12-24
CH607868GA3 (de) 1978-12-15
JPS5316380Y2 (de) 1978-04-28
HK52678A (en) 1978-09-22

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