JPS5696267A - Fixation of cover glass - Google Patents

Fixation of cover glass

Info

Publication number
JPS5696267A
JPS5696267A JP17179579A JP17179579A JPS5696267A JP S5696267 A JPS5696267 A JP S5696267A JP 17179579 A JP17179579 A JP 17179579A JP 17179579 A JP17179579 A JP 17179579A JP S5696267 A JPS5696267 A JP S5696267A
Authority
JP
Japan
Prior art keywords
cover glass
drum
water
margin
melting point
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
JP17179579A
Other languages
Japanese (ja)
Inventor
Yoshio Morita
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 Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP17179579A priority Critical patent/JPS5696267A/en
Publication of JPS5696267A publication Critical patent/JPS5696267A/en
Pending legal-status Critical Current

Links

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
    • G04B39/025—Sealing crystals or glasses without special sealing parts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

PURPOSE: To make the water sealing of the joint portion of a cover glass perfect and prevent the deterioration of joint strength due to water at the joint part by heating the low melting point metal placed between the metal alloy layers previously formed on the cover glass, margin and drum of a timepiece.
CONSTITUTION: A 0.1W50μm gold alloy layer 5 is attached to the back face of a cover glass 1 by spattering method for example, a 0.1W50μm gold alloy layer 7 to a metallic drum 2 or margin by the same method. Next, the foil of the low-melting point such as Au-In and Au-Sn is set between the cover glass 1 and the drum 2 for erample by welding it or margin to the alloy layer of the layer 5 or 7. Thereafter, the cover glass 1 and drum 2 are heated. Thereby, the low-melting point metal and gold alloy are welded mutually to form a perfect joint part, which completely seals water and does not cause any strength deterioration due to water.
COPYRIGHT: (C)1981,JPO&Japio
JP17179579A 1979-12-28 1979-12-28 Fixation of cover glass Pending JPS5696267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17179579A JPS5696267A (en) 1979-12-28 1979-12-28 Fixation of cover glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17179579A JPS5696267A (en) 1979-12-28 1979-12-28 Fixation of cover glass

Publications (1)

Publication Number Publication Date
JPS5696267A true JPS5696267A (en) 1981-08-04

Family

ID=15929831

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17179579A Pending JPS5696267A (en) 1979-12-28 1979-12-28 Fixation of cover glass

Country Status (1)

Country Link
JP (1) JPS5696267A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4474482A (en) * 1981-05-22 1984-10-02 Montres Rado S.A. Watchcase
US4509866A (en) * 1983-02-07 1985-04-09 Seiko Instruments & Electronics Ltd. Waterproof watchcase with multi-layered resin-coated glass
US4589886A (en) * 1982-12-14 1986-05-20 Montres Rado S.A. Method of making part of a watch case

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4474482A (en) * 1981-05-22 1984-10-02 Montres Rado S.A. Watchcase
US4589886A (en) * 1982-12-14 1986-05-20 Montres Rado S.A. Method of making part of a watch case
US4509866A (en) * 1983-02-07 1985-04-09 Seiko Instruments & Electronics Ltd. Waterproof watchcase with multi-layered resin-coated glass

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