JPS5668020A - Tuning fork type quartz oscillator - Google Patents

Tuning fork type quartz oscillator

Info

Publication number
JPS5668020A
JPS5668020A JP14508479A JP14508479A JPS5668020A JP S5668020 A JPS5668020 A JP S5668020A JP 14508479 A JP14508479 A JP 14508479A JP 14508479 A JP14508479 A JP 14508479A JP S5668020 A JPS5668020 A JP S5668020A
Authority
JP
Japan
Prior art keywords
resonance
resonance branch
length
tuning fork
fork type
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
JP14508479A
Other languages
Japanese (ja)
Inventor
Makoto Wakasugi
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP14508479A priority Critical patent/JPS5668020A/en
Publication of JPS5668020A publication Critical patent/JPS5668020A/en
Pending 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
    • H03H9/215—Crystal tuning forks consisting of quartz

Landscapes

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

Abstract

PURPOSE:To make it possible to obtain the maximum breaking strength and best frequency stability by bearing prescribed relations among resonance branch widths to legths from tips of -X-side and +X-side resonators, resonance branch widths to the rest lengths, and respective lengths. CONSTITUTION:Quartz piece 3 consists of resonance part 3a and base 3b. Then, the resonance branch width size is w1 for length l1 from the tip resonance part of -X-side resonance branch 3a, and the counterpart is W2 for the remaining l2. On the other hand, the resonance branch width size is W3 for length l3 from the tip resonance part of +X-side resonance branch 3a and W4 for the remining length l4. In this case, the overall lengths of the -X-side and +X-side resonators are equal and l2>l1. Then when l2=W1/2...2W and l4=W3/2...2W3, the maximum breaking strength and the best frequency stability can be obtained.
JP14508479A 1979-11-09 1979-11-09 Tuning fork type quartz oscillator Pending JPS5668020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14508479A JPS5668020A (en) 1979-11-09 1979-11-09 Tuning fork type quartz oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14508479A JPS5668020A (en) 1979-11-09 1979-11-09 Tuning fork type quartz oscillator

Publications (1)

Publication Number Publication Date
JPS5668020A true JPS5668020A (en) 1981-06-08

Family

ID=15377005

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14508479A Pending JPS5668020A (en) 1979-11-09 1979-11-09 Tuning fork type quartz oscillator

Country Status (1)

Country Link
JP (1) JPS5668020A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61215931A (en) * 1985-03-22 1986-09-25 Seiko Electronic Components Ltd Tuning fork type piezoelectric vibrator
JPS63109606A (en) * 1986-10-28 1988-05-14 Matsushita Electric Ind Co Ltd Piezolelectric ceramic filter
JPH0575376A (en) * 1991-09-13 1993-03-26 Murata Mfg Co Ltd Piezoelectric tuning fork resonator
US5691595A (en) * 1994-09-20 1997-11-25 Alps Electric Co., Ltd. Vibratory gyroscope
EP0821481A2 (en) * 1996-07-26 1998-01-28 Toyota Jidosha Kabushiki Kaisha Manufacture process of quartz vibrator
US8093787B2 (en) * 2008-10-06 2012-01-10 Nihon Dempa Kogyo Co., Ltd. Tuning-fork-type piezoelectric vibrating piece with root portions having tapered surfaces in the thickness direction

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61215931A (en) * 1985-03-22 1986-09-25 Seiko Electronic Components Ltd Tuning fork type piezoelectric vibrator
JPS63109606A (en) * 1986-10-28 1988-05-14 Matsushita Electric Ind Co Ltd Piezolelectric ceramic filter
JPH0575376A (en) * 1991-09-13 1993-03-26 Murata Mfg Co Ltd Piezoelectric tuning fork resonator
US5691595A (en) * 1994-09-20 1997-11-25 Alps Electric Co., Ltd. Vibratory gyroscope
EP0821481A2 (en) * 1996-07-26 1998-01-28 Toyota Jidosha Kabushiki Kaisha Manufacture process of quartz vibrator
EP0821481A3 (en) * 1996-07-26 2000-01-19 Toyota Jidosha Kabushiki Kaisha Manufacture process of quartz vibrator
US8093787B2 (en) * 2008-10-06 2012-01-10 Nihon Dempa Kogyo Co., Ltd. Tuning-fork-type piezoelectric vibrating piece with root portions having tapered surfaces in the thickness direction

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