JPS5577222A - Tuning-fork type vibrator - Google Patents

Tuning-fork type vibrator

Info

Publication number
JPS5577222A
JPS5577222A JP15142878A JP15142878A JPS5577222A JP S5577222 A JPS5577222 A JP S5577222A JP 15142878 A JP15142878 A JP 15142878A JP 15142878 A JP15142878 A JP 15142878A JP S5577222 A JPS5577222 A JP S5577222A
Authority
JP
Japan
Prior art keywords
tuning
vibrator
root
silver
fork
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.)
Granted
Application number
JP15142878A
Other languages
Japanese (ja)
Other versions
JPS6217405B2 (en
Inventor
Shigeru Kogure
Eiji Momozaki
Minoru Inoue
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 JP15142878A priority Critical patent/JPS5577222A/en
Priority to GB7941381A priority patent/GB2042797A/en
Priority to DE19792948567 priority patent/DE2948567A1/en
Priority to FR7929877A priority patent/FR2443766A1/en
Publication of JPS5577222A publication Critical patent/JPS5577222A/en
Publication of JPS6217405B2 publication Critical patent/JPS6217405B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/21—Crystal tuning forks
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
    • G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
    • G04F5/063—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE: To make it possible to obtain a highly-precise and long-life tuning-fork type vibrator for an electronic wrist watch by adjusting a resonance frequency by providing a convex part to the vibrator, in addition to vapor-deposited silver at this tip, root, etc.
CONSTITUTION: Main body 5 of a tuning-fork type crystal vibrator, making use of a combination of basic vibration F0 of flectional vibration and basic vibration T0 of twist vibration, is provided with electrode 6 and plug 7; silver 8 is vapor-deposited on the tops of its tuning fork arms, convex part 9 is made at the root of the tuning fork, and silver 10 is also vapor-deposited in the convex part and at its root. Here, the vibrator is provided concave part 9 and silver pieces 8 and 10 at the tops and root are used for weights for a resonance frequency afjustment. Consequently, a highly-precise and long-life tuning-fork vibrator for an electronic wrist watch can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP15142878A 1978-12-06 1978-12-06 Tuning-fork type vibrator Granted JPS5577222A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP15142878A JPS5577222A (en) 1978-12-06 1978-12-06 Tuning-fork type vibrator
GB7941381A GB2042797A (en) 1978-12-06 1979-11-30 Tuning fork type piezo-electric vibrator
DE19792948567 DE2948567A1 (en) 1978-12-06 1979-12-03 TUNING FORK SWINGER
FR7929877A FR2443766A1 (en) 1978-12-06 1979-12-05 DIAPASON-TYPE QUARTZ RESONATOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15142878A JPS5577222A (en) 1978-12-06 1978-12-06 Tuning-fork type vibrator

Publications (2)

Publication Number Publication Date
JPS5577222A true JPS5577222A (en) 1980-06-10
JPS6217405B2 JPS6217405B2 (en) 1987-04-17

Family

ID=15518395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15142878A Granted JPS5577222A (en) 1978-12-06 1978-12-06 Tuning-fork type vibrator

Country Status (4)

Country Link
JP (1) JPS5577222A (en)
DE (1) DE2948567A1 (en)
FR (1) FR2443766A1 (en)
GB (1) GB2042797A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63280507A (en) * 1987-05-12 1988-11-17 Seiko Electronic Components Ltd Coupling crystal resonator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658175A (en) * 1986-03-26 1987-04-14 The Singer Company-Kearfott Division Vibrating beam force transducer with A-frame beam root and frequency adjusting means
US5187458A (en) * 1989-09-21 1993-02-16 Nihon Musen Kabushiki Kaisha Composite longitudinal vibration mechanical filter having central frequency deviation elimination means and method of manufacturing same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071797A (en) * 1976-01-20 1978-01-31 Societe Suisse Pour L'industrie Horlogere Management Services S.A. Quartz piezo-electric element vibrating in a coupled mode
JPS5851687B2 (en) * 1976-10-22 1983-11-17 セイコーインスツルメンツ株式会社 Tuning fork crystal oscillator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63280507A (en) * 1987-05-12 1988-11-17 Seiko Electronic Components Ltd Coupling crystal resonator

Also Published As

Publication number Publication date
DE2948567A1 (en) 1980-06-26
GB2042797A (en) 1980-09-24
JPS6217405B2 (en) 1987-04-17
FR2443766A1 (en) 1980-07-04

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