US3906260A - Crystal vibrator - Google Patents

Crystal vibrator Download PDF

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Publication number
US3906260A
US3906260A US456334A US45633474A US3906260A US 3906260 A US3906260 A US 3906260A US 456334 A US456334 A US 456334A US 45633474 A US45633474 A US 45633474A US 3906260 A US3906260 A US 3906260A
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US
United States
Prior art keywords
crystal
conductive support
vibrator
timepiece
electrode tracks
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.)
Expired - Lifetime
Application number
US456334A
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English (en)
Inventor
Kikuo Oguchi
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.)
Suwa Seikosha KK
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 JP7402171A external-priority patent/JPS4840479A/ja
Priority to DE2246511A priority Critical patent/DE2246511C3/de
Priority to CH1381672A priority patent/CH579304B5/xx
Priority to CH1381672D priority patent/CH1381672A4/xx
Application filed by Suwa Seikosha KK filed Critical Suwa Seikosha KK
Priority to US456334A priority patent/US3906260A/en
Application granted granted Critical
Publication of US3906260A publication Critical patent/US3906260A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • H03H9/19—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/05—Holders or supports
    • H03H9/0504—Holders or supports for bulk acoustic wave devices
    • H03H9/0514—Holders or supports for bulk acoustic wave devices consisting of mounting pads or bumps

Definitions

  • the conductive support is [30] Forelgn Apphcatlon Pnonty Dam connected to the crystal and the material of which the Se t. 22, 1971 Japan 46-74021 conductive Support i f b i t d i ub tantially identical with the material of the crystal.
  • the crystal and [52] US. Cl. 3l0/9.6; 310/89; 310/94; support are referably integrally connected and most 2 310/97 preferably, they are integrally connected along a [51] hit. Cl.
  • the crystal may be mounted on an oscillator terminal tag with opposed contacts [56] References C'ted fixedly connected thereto, each contact being con- UNITED STATES PATENTS nected to one of the respective discrete electrode 2,161,980 6/1939 Runge et a1 310 96 x tracks deposited on the Crystal
  • 310/94 between the contacts and conductive support may be 2,343,738 3/1944 Bechmann et a1.
  • the present invention relates to an improved vibrator and mounting therefor for use in a timepiece. More particularly, the instant invention relates to an improved crystal vibrator of the type having a torsional vibrational mode.
  • quartz crystal timepieces which employ a crystal vibrator as a time standard are available, however, such crystal vibrators generally utilize the bending vibrational mode chracteristic of a tuning fork type or bar type crystal body.
  • Such quartz crystal vibrators as have been employed in timepieces, are connected to a divider circuit in the timepiece which converts the high frequency signal generated thereby into a low frequency signal suitable for driving the time indication mechanism of the timepiece.
  • divider circuits drain the power source which drives the timepiece and the higher the initial frequency generated by the crystal, the greater the number of dividers that must be employed within the circuit to reduce the frequency for driving the time indication mechanism.
  • quartz crystals having a torsional vibrational mode generate a higher frequency signal than quartz crystals of the bending vibrational variety and therefore, the latter have been employed in timepieces until recently, since they drain the power source less than the former, thereby prolonging the life of the power source.
  • crystals of the bending vibrational variety generate lower frequency signals to begin with, fewer divisions within the divider circuit have been necessary to reduce the signal into one suitable for driving the timepiece; therefore, it has been necessary to employ fewer dividers within the divider circuit allowing for compacting the divider circuit within the limited space of the timepiece and reducing the power drain of the divider circuit on the power source used to drive the timepiece.
  • this invention provides a crystal of the torsional vibrational variety which maybe employed in a vibrator in a timepiece which is substantially shockresistant, capable of high Q values and resistant to warpage.
  • a vibrator suitable for use in a timepiece which includes a crystal having a torsional vibrational mode, a pair of discrete electrode tracks deposited thereon, a continuous runner defining the discrete electrode tracks and a sole conductive support member for supporting the crystal and conductively mounting the crystal, as desired.
  • the conductive support is connected to the crystal and the material of which the conductive support is fabricated is substantially identical with the material of the crystal.
  • the crystal and support are preferably integrally connected and most preferably they are integrally connected along a transverse, rigid channel which extends into a thickened, elongated body member.
  • the crystal has a rectilinear configuration and is most preferably of rectangular shape.
  • the conductive support member is preferably connected to the crystal at a perpendicular, and most preferably the crystal is bilaterally symmetrical about a plane through the conductive support.
  • the vibrator When the vibrator crystal is formed in accordance with the invention, the vibrator may be fixedly mounted in a housing for inclusion within the timepiece and the vibrator may be rendered shock-resistant thereby for maintaining the high Q value of the crystal.
  • the crystal may be mounted on an oscillator terminal tag with opposed contacts fixedly connected thereto, each contact being connected to one of the respective discrete electrode tracks deposited on the crystal.
  • the fixed connection between the contacts and conductive support may be a solder bond which secures the vibrator to the case. This mounting provides high Q value and shock-resistance.
  • a vibrator for use in a timepiece which includes a crystal having a torsional vibrational mode.
  • Another object of the invention is to provide a mounting for the novel crystal.
  • a further object of the invention is to provide a crystal of the torsional vibrational variety which may be employed in a vibrator in a timepiece and which is substantially shock-resistant, capable of high Q values and resistant to Warpage.
  • FIG. 1 is a plan view of a conventional crystal vibrator of the torsional vibrational variety and is duly labeled prior art
  • the crystal vibrator is-co'upled by coupling leads 106,106 to oscillator a'nd divider circuits wherein the high frequency oscillation generated by the crystal vibrator is reduced by the divider circuit to low frequency timing signals which are transferred to a decoder circuit.
  • the decoder circuit produces an output which is transferred to a driving circuit and when it is desired to read the time indicated by the timepiece a booster circuit is actuated, for instance, by a manually operable switch and supplies the high voltage necessary for actuating selected elements of the liquid crystal display device.
  • Such prior art crystal vibrators are usually either selfcontained within their own housing, or they are contained within the timepiece case and such housings and cases are generally small in size.
  • Prior art crystal vibrators of the type described which are suspended on thin wire supports are apt to physically contact an inner wall of their housing or case when conductive thin wire supports 105, 105' are connected to electrodes 102, 103 or coupling leads 106, 106 in a somewhat imprecise manner.
  • crystal bar 101 may still physically contact its housing or case when such housing or case receives a shock, for instance, an impact, as is likely to occur when such timepiece is worn, moved, and the like.
  • FIG. 2 shows a preferred imlike techniques.
  • selected areas of crystal 3 may be masked, as hereinbefore described, by one or more known masking methods and at the conclusion of the coating process continuous runner 8 is provided between neighboring-electrodes 5 and 6.
  • Crystal 3, preferably at the mid-portion thereof, is integrally connected to indexing or conductive support 4 by which the crystal vibrator may be firmly fixed in its housing or case.
  • Conductive support 4 may be hereinafter referred to in the specification and claims by the interchangeable terms indexing member and conductive support member.”
  • Conductive support 4 is formed of a material substantially identical with the crystal material of which crystal 3 is formed and while conductive support 4 may be a discrete'body, it is preferably integrally connected to and formed with crystal 3. Most preferably, the integral connection between the crystal and support occurs across a transverse, rigid channel or neck which extends into a thickened, elongated support body member.
  • Integrally connected conductive support 4 is provided with discrete electrode tracks which are set off by a continuous runner and, preferably, the discrete electrode tracks and runner are continuous extensions of respective electrode tracks 5 and 6 and runner 8 provided on crystal body 3.
  • the crystal vibrator may be provided with its own housing which is thereafter firmly fixed in the timepiece ca se or it may be immediately fixedly mounted within the timepiece case. Once mounted within the timepiece case, the crystal vibrator may be coupled to oscillator and divider circuits by connecting coupling leads 7 and 7' thereto. For instance, the crystal vibrator may be coupled with other circuitry of the timepiece in the manner shown and described in copending application Ser. No. 212,248, filed Dec. 27, 1971, entitled “Quartz-Oscillator Controlled Timepiece Using Liquid Crystal Display Device," however, other means for interconnecting crystal vibrators in timepiece circuits are also well-known.
  • the crystal vibrator of this invention may be mounted within its own housing or the timepiece case by any number of well known mounting methods, provided the mounting procedure does not cause a fracture in crystal 3.
  • the crystal vibrator housing or timepiece casing may be provided with a mounting clip for removably 'mounting conductive support member 4 of the crystal vibrator therein, alternatively, the housing or casing may be provided with a female receiving clip for removably engaging conductive support member 4 therein.
  • FIG 3 A particularly preferred mounting is shown in FIG 3, wherein a crystal vibrator 27, constructed in accordance with this invention, is provided with a discrete electrode track 28 extending downwardly along the conductive support whereat it is conductively connected to contact 30.
  • a contact 32 is conductively connected to the other discrete electrode track 31 provided on crystal 27 and along the conductive support.
  • a solder is employed to make the conductive connection and the solder firmly secures the conductive support to respective contacts 30 and 32.
  • contacts 30 and 32 rigidly secure crystal 27 to the 33 and a high Q value, as well as a shock-resistant character are obtained.
  • crystal with torsional vibrational characteristics may be employed in connection with the instant invention, provided it is of the type that may be utilized in a timepiece, it is preferable that the crystal used be of the quartz variety.
  • the crystal itself including integrally formed conductive support member 4, may be formed by any one of a number of well known forming methods, for instance, by cutting or stamping.
  • the shock-resistance of the crystal vibrator of the instant invention is significantly higher than the concomitant shock-resistance of heretofore used conventional crystal vibrators of the type shown in FIG. 1 because the improved crystal vibrator includes a substantially rigid conductive support on which it may be mounted. Therefore, the displacement of the improved crystal vibrator in its housing or case upon impact is substantially de minimus relative to the displacement that may occur in the conventional crystal vibrator of the type shown in FIG. 1. Additionally, since conductive support 4 is itself a crystal of the same material as crystal 3, the improved crystal vibrator exhibits a high Q value and significantly contributes to the effectiveness of a quartz crystal wrist-watch.
  • a mounted vibrator for use in a timepiece comprising a crystal having a torsional vibrational mode, a pair of discrete electrode tracks deposited thereon, a continuous runner defining said discrete electrode tracks, a sole conductive support member for supporting said crystal and for conductively mounting said crystal, said conductive support being connected to said crystal and said crystal and-said conductive support being of substantially identical material, a terminal tag, said conductive support being mounted thereon, and a pair of contact pins mounted in said terminal tag; said conductive support being mounted on said'terminal tag between said contact pins, said contact pins being fixedly connected to said conductive support.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Electric Clocks (AREA)
US456334A 1971-09-22 1974-03-29 Crystal vibrator Expired - Lifetime US3906260A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE2246511A DE2246511C3 (de) 1971-09-22 1972-09-20 Kristalldrehschwinger
CH1381672A CH579304B5 (enrdf_load_stackoverflow) 1971-09-22 1972-09-21
CH1381672D CH1381672A4 (enrdf_load_stackoverflow) 1971-09-22 1972-09-21
US456334A US3906260A (en) 1971-09-22 1974-03-29 Crystal vibrator

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP7402171A JPS4840479A (enrdf_load_stackoverflow) 1971-09-22 1971-09-22
US28951972A 1972-09-15 1972-09-15
US456334A US3906260A (en) 1971-09-22 1974-03-29 Crystal vibrator

Publications (1)

Publication Number Publication Date
US3906260A true US3906260A (en) 1975-09-16

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ID=27301379

Family Applications (1)

Application Number Title Priority Date Filing Date
US456334A Expired - Lifetime US3906260A (en) 1971-09-22 1974-03-29 Crystal vibrator

Country Status (3)

Country Link
US (1) US3906260A (enrdf_load_stackoverflow)
CH (2) CH579304B5 (enrdf_load_stackoverflow)
DE (1) DE2246511C3 (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012648A (en) * 1974-05-06 1977-03-15 Societe Suisse Pour 1'industrie Horlogere Management Services S.A. Process for manufacturing piezoelectric resonators and resonators resulting from such process
EP0056783A1 (fr) * 1981-01-15 1982-07-28 Asulab S.A. Micro-résonateur piézo-électrique
US4531073A (en) * 1983-05-31 1985-07-23 Ohaus Scale Corporation Piezoelectric crystal resonator with reduced impedance and sensitivity to change in humidity
US4633124A (en) * 1982-03-16 1986-12-30 Kabushiki Kaisha Daini Seikosha Mount for quartz crystal resonator
US5012151A (en) * 1989-09-12 1991-04-30 Halliburton Company Thermally matched strip mounted resonator and related mounting method
US5030875A (en) * 1990-01-26 1991-07-09 Motorola, Inc. Sacrificial quartz crystal mount
EP0456061A1 (fr) * 1990-05-10 1991-11-13 Eta SA Fabriques d'Ebauches Résonateur comportant un barreau destiné à vibrer dans un mode d'allongement
US5135312A (en) * 1990-07-20 1992-08-04 Sundstrand Data Control, Inc. Temperature transducer
US5156460A (en) * 1990-11-05 1992-10-20 Sundstrand Corporation Crystal temperature transducer
US20120187805A1 (en) * 2009-09-18 2012-07-26 Daishinku Corporation Piezoelectric resonator plate and manufacturing method for piezoelectric resonator plate

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1083574A4 (enrdf_load_stackoverflow) * 1974-08-07 1976-07-15
DE2703335A1 (de) * 1976-01-29 1977-08-04 Seiko Instr & Electronics Piezoelektrischer schwinger mit dickenscherungsschwingung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2161980A (en) * 1932-10-13 1939-06-13 Telefunken Gmbh Elastically oscillating oscillator
US2310612A (en) * 1939-10-13 1943-02-09 Bremer Heinrich Mount for long wave quartz crystals
US2343738A (en) * 1940-04-02 1944-03-07 Bechmann Rudolf Piezoelectric crystal mounting
US3617780A (en) * 1967-10-26 1971-11-02 Hewlett Packard Co Piezoelectric transducer and method for mounting same
US3683213A (en) * 1971-03-09 1972-08-08 Statek Corp Microresonator of tuning fork configuration
US3697766A (en) * 1970-02-27 1972-10-10 Junghans Gmbh Geb Piezoelectric oscillator in the form of a tuning fork

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2161980A (en) * 1932-10-13 1939-06-13 Telefunken Gmbh Elastically oscillating oscillator
US2310612A (en) * 1939-10-13 1943-02-09 Bremer Heinrich Mount for long wave quartz crystals
US2343738A (en) * 1940-04-02 1944-03-07 Bechmann Rudolf Piezoelectric crystal mounting
US3617780A (en) * 1967-10-26 1971-11-02 Hewlett Packard Co Piezoelectric transducer and method for mounting same
US3697766A (en) * 1970-02-27 1972-10-10 Junghans Gmbh Geb Piezoelectric oscillator in the form of a tuning fork
US3683213A (en) * 1971-03-09 1972-08-08 Statek Corp Microresonator of tuning fork configuration

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012648A (en) * 1974-05-06 1977-03-15 Societe Suisse Pour 1'industrie Horlogere Management Services S.A. Process for manufacturing piezoelectric resonators and resonators resulting from such process
EP0056783A1 (fr) * 1981-01-15 1982-07-28 Asulab S.A. Micro-résonateur piézo-électrique
US4608510A (en) * 1981-01-15 1986-08-26 Asulab S.A. - ESA 55 Piezoelectric micro-resonateur
US4633124A (en) * 1982-03-16 1986-12-30 Kabushiki Kaisha Daini Seikosha Mount for quartz crystal resonator
US4531073A (en) * 1983-05-31 1985-07-23 Ohaus Scale Corporation Piezoelectric crystal resonator with reduced impedance and sensitivity to change in humidity
US5012151A (en) * 1989-09-12 1991-04-30 Halliburton Company Thermally matched strip mounted resonator and related mounting method
US5030875A (en) * 1990-01-26 1991-07-09 Motorola, Inc. Sacrificial quartz crystal mount
EP0456061A1 (fr) * 1990-05-10 1991-11-13 Eta SA Fabriques d'Ebauches Résonateur comportant un barreau destiné à vibrer dans un mode d'allongement
FR2662032A1 (fr) * 1990-05-10 1991-11-15 Ebauchesfabrik Eta Ag Resonateur comportant un barreau destine a vibrer dans un mode d'allongement.
US5153478A (en) * 1990-05-10 1992-10-06 Eta Sa Fabriques D'ebauches Resonator having a bar designed to vibrate in one extension mode
US5135312A (en) * 1990-07-20 1992-08-04 Sundstrand Data Control, Inc. Temperature transducer
US5156460A (en) * 1990-11-05 1992-10-20 Sundstrand Corporation Crystal temperature transducer
US20120187805A1 (en) * 2009-09-18 2012-07-26 Daishinku Corporation Piezoelectric resonator plate and manufacturing method for piezoelectric resonator plate
US8618722B2 (en) * 2009-09-18 2013-12-31 Daishinku Corporation Piezoelectric resonator plate and manufacturing method for piezoelectric resonator plate

Also Published As

Publication number Publication date
DE2246511A1 (de) 1973-04-05
DE2246511C3 (de) 1975-11-27
DE2246511B2 (de) 1975-04-17
CH1381672A4 (enrdf_load_stackoverflow) 1976-03-31
CH579304B5 (enrdf_load_stackoverflow) 1976-08-31

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