JPS57111490A - Manufacture of timepiece parts - Google Patents

Manufacture of timepiece parts

Info

Publication number
JPS57111490A
JPS57111490A JP18813280A JP18813280A JPS57111490A JP S57111490 A JPS57111490 A JP S57111490A JP 18813280 A JP18813280 A JP 18813280A JP 18813280 A JP18813280 A JP 18813280A JP S57111490 A JPS57111490 A JP S57111490A
Authority
JP
Japan
Prior art keywords
jumper
parts
daily
metallic material
precisely
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
JP18813280A
Other languages
Japanese (ja)
Inventor
Masao Okamura
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 JP18813280A priority Critical patent/JPS57111490A/en
Publication of JPS57111490A publication Critical patent/JPS57111490A/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
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To manufacture thin type metallic material parts efficiently and precisely by punching parts in a required shape firstly and by forming a plastic material at some part of said pushed parts as one body by extrusion secondarily. CONSTITUTION:After parts are punched in a required shape, a plastic material (urea resin, etc.) is extruded to the tip parts of a daily jumper body 12 which has no jumper part and uses a thin-plate metallic material, thus forming a jumper part 13 and a slide surface 14. The jumper part 13 provided extremely hard fixation by the round-tip part 12 of the daily jumper body 12, and the enough shape of the jumper lever is formed. The daily jumper body and jumper part reduce the friction of the slide part greatly, and thin type metallic material parts are manufactured efficiently and precisely.
JP18813280A 1980-12-29 1980-12-29 Manufacture of timepiece parts Pending JPS57111490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18813280A JPS57111490A (en) 1980-12-29 1980-12-29 Manufacture of timepiece parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18813280A JPS57111490A (en) 1980-12-29 1980-12-29 Manufacture of timepiece parts

Publications (1)

Publication Number Publication Date
JPS57111490A true JPS57111490A (en) 1982-07-10

Family

ID=16218285

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18813280A Pending JPS57111490A (en) 1980-12-29 1980-12-29 Manufacture of timepiece parts

Country Status (1)

Country Link
JP (1) JPS57111490A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100435045C (en) * 2001-05-11 2008-11-19 精工电子有限公司 Positioning-lever structure and clock pointer with same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100435045C (en) * 2001-05-11 2008-11-19 精工电子有限公司 Positioning-lever structure and clock pointer with same

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