HK55078A - Improvements relating to piezo-electronic tuning fork vibrators - Google Patents

Improvements relating to piezo-electronic tuning fork vibrators

Info

Publication number
HK55078A
HK55078A HK550/78A HK55078A HK55078A HK 55078 A HK55078 A HK 55078A HK 550/78 A HK550/78 A HK 550/78A HK 55078 A HK55078 A HK 55078A HK 55078 A HK55078 A HK 55078A
Authority
HK
Hong Kong
Prior art keywords
casing
vibrator
tuning fork
rods
piezo
Prior art date
Application number
HK550/78A
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
Priority claimed from JP577374A external-priority patent/JPS5333399B2/ja
Priority claimed from JP10798974A external-priority patent/JPS5134685A/en
Application filed by Suwa Seikosha Kk filed Critical Suwa Seikosha Kk
Publication of HK55078A publication Critical patent/HK55078A/en

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
    • B06B1/0659—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element of U-shape

Abstract

The very thin tuning-fork shaped quartz-crystal vibrator (15) is mounted in a casing (30) and comprises two metal rods (31) which are disconnected at two locations of the base of the vibrator which are touched by two conductive films of electrodes for exciting bending in their plane. These electrodes have a particular electrically advantageous configuration allowing such mounting. The two rods pass through the wall of the casing. A certain space remains between the rear side of the tuning fork and the wall of the casing, in which space the two said rods can bend in order to neutralise the stresses which, otherwise, would result from a difference in temperature coefficient between the quartz crystal and the material forming the casing. This component is particularly suited to miniaturisation, its vibrator being used as time base in an electronic watch. <IMAGE>
HK550/78A 1974-01-09 1978-09-14 Improvements relating to piezo-electronic tuning fork vibrators HK55078A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP577374A JPS5333399B2 (en) 1974-01-09 1974-01-09
JP10798974A JPS5134685A (en) 1974-09-19 1974-09-19 Atsudenshindoshi no shijihoho

Publications (1)

Publication Number Publication Date
HK55078A true HK55078A (en) 1978-09-22

Family

ID=26339777

Family Applications (1)

Application Number Title Priority Date Filing Date
HK550/78A HK55078A (en) 1974-01-09 1978-09-14 Improvements relating to piezo-electronic tuning fork vibrators

Country Status (6)

Country Link
CH (2) CH641633GA3 (en)
DE (1) DE2500687C3 (en)
FR (1) FR2257153B1 (en)
GB (1) GB1465863A (en)
HK (1) HK55078A (en)
MY (1) MY7800432A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5279794A (en) * 1975-12-26 1977-07-05 Seiko Instr & Electronics Ltd Piezo-vibrator unit
JPS6070811A (en) * 1983-09-27 1985-04-22 Matsushima Kogyo Co Ltd Longitudinal vibration type piezoelectric vibrator and its manufacture
EP1303042B1 (en) * 2001-10-09 2018-12-05 Eta SA Fabriques d'Ebauches Piezoelectrical resonator and unit comprising such a resonator enclosed in a case
TW567664B (en) 2001-10-09 2003-12-21 Ebauchesfabrik Eta Ag Piezoelectric resonator and assembly comprising the same enclosed in a case

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL49647C (en) * 1936-11-20
DE1915465B2 (en) * 1968-04-01 1971-11-04 Manufacturing housing for piezo electric quartz device
JPS4930558B1 (en) * 1969-10-03 1974-08-14
FR2100546B1 (en) * 1970-05-15 1973-07-13 Lip Horlogerie
US3697787A (en) * 1971-04-16 1972-10-10 Seymour J Posner Supersensitive energizing circuit

Also Published As

Publication number Publication date
FR2257153A1 (en) 1975-08-01
DE2500687B2 (en) 1977-12-22
DE2500687C3 (en) 1986-11-13
CH641633B (en)
DE2500687A1 (en) 1975-07-17
CH645507GA3 (en) 1984-10-15
CH641633GA3 (en) 1984-03-15
FR2257153B1 (en) 1978-06-30
MY7800432A (en) 1978-12-31
GB1465863A (en) 1977-03-02

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