US3857146A - Method of making a quartz bar resonator - Google Patents

Method of making a quartz bar resonator Download PDF

Info

Publication number
US3857146A
US3857146A US00349674A US34967473A US3857146A US 3857146 A US3857146 A US 3857146A US 00349674 A US00349674 A US 00349674A US 34967473 A US34967473 A US 34967473A US 3857146 A US3857146 A US 3857146A
Authority
US
United States
Prior art keywords
electrodes
base plate
blank
quartz bar
quartz
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
US00349674A
Other languages
English (en)
Inventor
J Engdahl
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.)
SSIH Management Services SA
Original Assignee
SSIH Management Services SA
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 SSIH Management Services SA filed Critical SSIH Management Services SA
Application granted granted Critical
Publication of US3857146A publication Critical patent/US3857146A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H03H9/02—Details
    • H03H9/05—Holders or supports
    • H03H9/0504—Holders or supports for bulk acoustic wave devices
    • H03H9/0528—Holders or supports for bulk acoustic wave devices consisting of clips
    • 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
    • H03H9/09—Elastic or damping supports
    • 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
    • H03H9/10—Mounting in enclosures
    • H03H9/1007—Mounting in enclosures for bulk acoustic wave [BAW] devices
    • H03H9/1014—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/42—Piezoelectric device making

Definitions

  • a suspension of a quartz bar including forming at least a pair of spaced forked electrodes interconnected by a blank in a single metallic sheet, folding the electrodes with respect to the blank, supporting at least a part of each of the electrodes from a base plate, removing the blank, and suspending a quartz bar upon said electrodes.
  • Spacer legs adapted to be used to properly position the electrodes on the base may also be formed in the sheet and subsequently removed.
  • the present invention pertains to the suspension of a quartz bar between spaced pairs of electrodes, and more particularly, to a simply manufactured suspension assembly which assures precise spacing between such electrode pairs.
  • Suspensions of quartz are known where a bar of quartz is suspended in the region of the nodal points by means of metallic sheets, for example of bronze or cupro-beryllium. These metallic sheets or springs are placed approximately parallel to the longitudinal axis at the side of the quartz bar. Each sheet or spring is fixed separately to a supporting pin which passes through the bottom of the case or housing of the quartz bar. This suspension is relatively complicated and expensive and lacks the necessary rigidity to prevent variations of frequency of the quartz due to shocks.
  • the present invention aims to remedy the aforementioned drawbacks with a particularly simple and effective suspension which avoids a deviation of frequency of the quartz due to a shock against the case or due to a permanent deformation of the suspending elements.
  • the suspension of quartz according to the invention is characterized in that each pair of electrodes is made of one piece in the shape of a fork, one part thereof being embedded in the bottom of the quartz-case. This suspension not only has a high resistance to shocks, but also allows easy assembling without constraint.
  • FIG. 1-3 show several steps in the fabrication of one embodiment of the suspension according to the present invention
  • FIG. 4 shows a partial longitudinal cut of the finished quartz resonator with its case
  • FIG. 5 is a transverse sectional view of the finished quartz with its case
  • FIG. 6 is a transverse sectional view of a second embodiment of the suspension.
  • FIG. 1 For the realisation of the first embodiment of the suspension a cut metallic sheet as shown in FIG. 1 is used, where the cutting is made either by stamping or chemically.
  • This metallic sheet has a central rectangular part 1 and legs 2 with predetermined length at each end.
  • the sheet also contains generally Y-shaped, forked electrode pairs 3 at each end thereof.
  • the sheet shown in FIG. 1 is then folded along the indicated dash-dotted lines to form the U-shaped piece shown in FIG. 2. It can be seen that the legs 2 and the electrode pairs 3 are in planes which are perpendicular to the plane of the median part 1. This piece is now put on the bottom 5 (FIG.
  • each electrode pair is then embedded in a glass bead 7, formed in an opening of bottom 5.
  • the lower extremities of the electrode pairs form the terminals 8 of the quartz resonator assembly.
  • the median part 1 and the upper parts of the electrode pairs 3 and of the legs 2 are now cut along the dash-dotted lines shown in FIG. 3 and are removed so that separated pairs of electrodes 3 are obtained. Furthermore, by changing the length of the legs 2 it is possible to adjust the resonant frequency of the suspension and to optimalize the Q-factor of the resonator.
  • a bar of quartz 9 (FIG. 4) is then introduced from above between the electrode pairs and the electrodes are connected to a metallic coating which covers the lateral surfaces of the quartz bar by soft soldering.
  • the distance between the two pairs of electrodes was exactly determined by the median part 1 when embedding the electrodes in the bead 7, and corresponds exactly to the distance between the nodal points of the quartz bar.
  • FIGS. 4 and 5 show the terminated quartz in its case after the assembling of cover 10 and evacuation of the case.
  • the suspension of the quartz is particularly sturdy and prevents deviations of the frequency of the quartz due to shocks.
  • FIG. 6 shows a second embodiment differing from the above first embodiment in that the electrode pairs 3a have two terminals 8a and are generally H-shaped.
  • a bottom made of insulating material such as for example glass or ceramics, may be used. These materials can be metallically coated at the spots where the connections pass and on the areas where the cover is fixed, whereas the electrode pairs and the cover can be fixed by soft soldering to the bottom.
  • a method of fabrication of a quartz bar resonator comprising the steps of forming at least a pair of spaced, forked electrodes interconnected by a blank in a single metallic sheet, folding said electrodes with respect to said blank, fixedly supporting at least a part of each of said electrodes from a base plate, removing said blank leaving said electrodes separately extending from said base plate, mounting a quartz bar at one end on one of said spaced electrodes and at the other end on another of said spaced electrodes, and connecting said quartz bar to said electrodes.
  • a method according to claim 5 wherein lateral legs are formed on the ends of said metallic sheet for 9.
  • a method according to claim 1 further comprising positioning a cover over said quartz bar and connecting the same to said base plate.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
US00349674A 1972-04-13 1973-04-10 Method of making a quartz bar resonator Expired - Lifetime US3857146A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH547272A CH548136A (fr) 1972-04-13 1972-04-13 Resonateur a barreau de quartz.

Publications (1)

Publication Number Publication Date
US3857146A true US3857146A (en) 1974-12-31

Family

ID=4294168

Family Applications (1)

Application Number Title Priority Date Filing Date
US00349674A Expired - Lifetime US3857146A (en) 1972-04-13 1973-04-10 Method of making a quartz bar resonator

Country Status (8)

Country Link
US (1) US3857146A (en。)
JP (1) JPS5247998B2 (en。)
CH (1) CH548136A (en。)
DE (1) DE2312155C3 (en。)
FR (1) FR2179749B1 (en。)
GB (1) GB1400129A (en。)
HK (1) HK30477A (en。)
NL (1) NL7305094A (en。)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2482784A1 (fr) * 1980-05-14 1981-11-20 Ebauchesfabrik Eta Ag Procede de realisation de boitiers pour composant electronique
US4486681A (en) * 1981-09-21 1984-12-04 Tokyo Denpa Kabushiki Kaisha Y-Shaped support for piezoelectric resonator
US4706350A (en) * 1985-01-07 1987-11-17 Motorola, Inc. Self-locating, self-fixturing hard crystal blank mounting system
US5345670A (en) * 1992-12-11 1994-09-13 At&T Bell Laboratories Method of making a surface-mount power magnetic device
US20050150352A1 (en) * 2004-01-12 2005-07-14 Cherny Michale N. Quartz drum and method of making

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5186377A (ja) * 1975-01-27 1976-07-28 Seiko Instr & Electronics Suishohatsushinkinoseizoho
JPS52154140U (en。) * 1976-05-18 1977-11-22
DE2931333A1 (de) * 1979-08-02 1981-02-05 Standard Elektrik Lorenz Ag Keramikfilteranordnung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2155035A (en) * 1936-01-02 1939-04-18 Bell Telephone Labor Inc Piezoelectric crystal apparatus
US2409838A (en) * 1945-02-13 1946-10-22 Gen Electric Crystal mounting
US2434903A (en) * 1944-11-21 1948-01-27 Standard Telephones Cables Ltd Piezoelectric crystal mounting
US2457145A (en) * 1945-01-23 1948-12-28 Int Standard Electric Corp Mounting for piezoelectric crystals
US3535569A (en) * 1968-04-19 1970-10-20 Mallory & Co Inc P R Pressure support resonator mounting
US3643305A (en) * 1970-06-24 1972-02-22 Gen Motors Corp Method of fabricating a piezoelectric device
US3678309A (en) * 1970-01-14 1972-07-18 Centre Electron Horloger Piezoelectric resonator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2341683A (en) * 1942-04-20 1944-02-15 Bendix Aviat Corp Piezoelectric crystal holder
GB592132A (en) * 1945-05-18 1947-09-09 Standard Telephones Cables Ltd Improvements in or relating to the mounting of piezo-electric crystals
US2481806A (en) * 1947-08-07 1949-09-13 John M Wolfskill Piezoelectric crystal holder
US3054915A (en) * 1959-03-16 1962-09-18 Hill Electronics Inc Mount for piezo-electric crystal

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2155035A (en) * 1936-01-02 1939-04-18 Bell Telephone Labor Inc Piezoelectric crystal apparatus
US2434903A (en) * 1944-11-21 1948-01-27 Standard Telephones Cables Ltd Piezoelectric crystal mounting
US2457145A (en) * 1945-01-23 1948-12-28 Int Standard Electric Corp Mounting for piezoelectric crystals
US2409838A (en) * 1945-02-13 1946-10-22 Gen Electric Crystal mounting
US3535569A (en) * 1968-04-19 1970-10-20 Mallory & Co Inc P R Pressure support resonator mounting
US3678309A (en) * 1970-01-14 1972-07-18 Centre Electron Horloger Piezoelectric resonator
US3643305A (en) * 1970-06-24 1972-02-22 Gen Motors Corp Method of fabricating a piezoelectric device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2482784A1 (fr) * 1980-05-14 1981-11-20 Ebauchesfabrik Eta Ag Procede de realisation de boitiers pour composant electronique
US4486681A (en) * 1981-09-21 1984-12-04 Tokyo Denpa Kabushiki Kaisha Y-Shaped support for piezoelectric resonator
US4706350A (en) * 1985-01-07 1987-11-17 Motorola, Inc. Self-locating, self-fixturing hard crystal blank mounting system
US5345670A (en) * 1992-12-11 1994-09-13 At&T Bell Laboratories Method of making a surface-mount power magnetic device
US20050150352A1 (en) * 2004-01-12 2005-07-14 Cherny Michale N. Quartz drum and method of making
US7135631B2 (en) * 2004-01-12 2006-11-14 Cherny Michale N Quartz drum and method of making

Also Published As

Publication number Publication date
CH548136A (fr) 1974-04-11
JPS4911485A (en。) 1974-01-31
DE2312155A1 (de) 1973-10-25
HK30477A (en) 1977-06-24
FR2179749A1 (en。) 1973-11-23
DE2312155C3 (de) 1978-11-02
DE2312155B2 (de) 1974-04-11
JPS5247998B2 (en。) 1977-12-06
GB1400129A (en) 1975-07-16
NL7305094A (en。) 1973-10-16
FR2179749B1 (en。) 1976-05-21

Similar Documents

Publication Publication Date Title
US3857146A (en) Method of making a quartz bar resonator
US3697789A (en) Mechanical oscillator
US8803407B2 (en) Piezoelectric device with asymmetrically mounted tuning-fork type piezoelectric vibrating piece
CN101521494A (zh) 压电振动片以及制造压电振动片的方法
JPS5941913A (ja) モノリシック・クリスタル・フィルタおよびその製造方法
TWI722267B (zh) 音叉型振動子及音叉型振動子之製造方法
US4069434A (en) Quartz crystal oscillator
US4859898A (en) Suspension springs for a vibrating piezoelectric plate
CN106559057B (zh) 音叉式晶体片、音叉式晶体元件、晶体设备和音叉式晶体元件的制造方法
WO2003034486A2 (en) Thin metal package and manufacturing method thereof
JP6436175B2 (ja) 音叉型振動子
CN107615652A (zh) 压电振动元件搭载用基板以及压电振子及其制造方法
JP2007124442A (ja) 圧電振動子
JP4938401B2 (ja) 音叉型水晶振動板の周波数調整方法
JP2005192088A (ja) 圧電振動片および圧電振動デバイス
JP2004274286A (ja) 台座付の水晶振動子
JPS5848818Y2 (ja) 圧電振動子の保持容器
JP3025617U (ja) 表面実装型振動子用の気密性器体
JPS58182911A (ja) 圧電振動子
JP3027036U (ja) 水晶振動子
JPH0435311A (ja) 表面実装用水晶振動子
JPH0233389Y2 (en。)
JPS5838653Y2 (ja) 音叉形圧電振動子
JPS5844649Y2 (ja) 薄型輪郭すべり振動子
JPS6192010A (ja) 蒸着マスク