JP3201777B2 - Crystal oscillator - Google Patents
Crystal oscillatorInfo
- Publication number
- JP3201777B2 JP3201777B2 JP06918691A JP6918691A JP3201777B2 JP 3201777 B2 JP3201777 B2 JP 3201777B2 JP 06918691 A JP06918691 A JP 06918691A JP 6918691 A JP6918691 A JP 6918691A JP 3201777 B2 JP3201777 B2 JP 3201777B2
- Authority
- JP
- Japan
- Prior art keywords
- outer peripheral
- crystal
- metal base
- peripheral portion
- metal
- 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 - Fee Related
Links
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
【００１】[0101]
【産業上の利用分野】本発明はモノリシックフィルタと
しての水晶振動子を利用分野とし、特に耐衝撃整を向上
する小型な水晶振動子に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quartz resonator as a monolithic filter, and more particularly to a compact quartz resonator having improved shock resistance.
【０００２】[0002]
【発明の背景】モノリシックフィルタ用の水晶振動子
は、その特性に優れ、比較的高級な通信機器に有用され
ている。近年では、例えば移動体用通信機器の普及に伴
い、その需要が増大傾向にある。そして、これらの需要
を満たすには、性能の維持は勿論のこと、小型化が必要
条件となる背景がある。BACKGROUND OF THE INVENTION Quartz resonators for monolithic filters have excellent characteristics and are useful for relatively high-grade communication equipment. In recent years, for example, with the spread of mobile communication devices, the demand has been increasing. In order to satisfy these demands, there is a background that downsizing is a necessary condition as well as maintaining performance.
【０００３】[0003]
【従来技術】第３図はこの種の一従来例を説明するカバ
ーを除去した水晶振動子の図である。水晶振動子は例え
ばＡＴカットからなる矩系状の水晶片１を金属ベース２
上に立設してなる。水晶片１は、その一主面に入出力電
極３、４を形成して両端外周部に入出力用引出電極５、
６を延出する（第４図、第５図）。そして、他主面に入
出力電極３、４と対向する共通電極７を形成し、両端外
周部間の中央端外周部に共通用引出電極８を延出する。
金属ベース２は一対の入出力用のリード線９、１０が両
端側の表面に突出し、裏面に貫通して外部へ導出する。
そして、共通用のリード線１１が金属ベース２の裏面に
接続する。入出力用のリード線９、１０にはそれぞれサ
ポータ１２（ａｂ）が接続される。サポータ１２は例え
ば金属平板からなり、スリット１３を中心からずらして
設けてある。そして、水晶片１の両端外周部をスリット
１３に挿入し、導電性接着剤（未図示）により電気的・
機械的に接続して保持する。また、水晶片１の中央端外
周部を補助具１４により金属ベース２と電気的に接続す
る。補助具１４は例えば金属細線１４からなり同様の導
電性接着剤１５により接続する。そして、水晶片１の中
央端外周部を金属ベース２に極力接近させ、小型化特に
高さ寸法を縮小する構成としていた。2. Description of the Related Art FIG. 3 is a view of a crystal unit without a cover for explaining a conventional example of this kind. For example, a crystal unit 1 is made of a rectangular crystal piece 1 made of an AT cut and a metal base 2.
Standing on top. The crystal blank 1 has input / output electrodes 3 and 4 formed on one main surface thereof, and input / output extraction electrodes 5 and
6 is extended (FIGS. 4 and 5). Then, a common electrode 7 facing the input / output electrodes 3 and 4 is formed on the other main surface, and the common extraction electrode 8 extends to the outer peripheral portion at the center end between the outer peripheral portions at both ends.
The metal base 2 has a pair of input / output lead wires 9 and 10 protruding from the front surface on both ends, penetrating the rear surface, and leading to the outside.
Then, the common lead wire 11 is connected to the back surface of the metal base 2. Supporters 12 (ab) are connected to the input and output leads 9 and 10, respectively. The supporter 12 is made of, for example, a metal plate, and is provided with the slit 13 shifted from the center. Then, the outer peripheral portions of both ends of the crystal blank 1 are inserted into the slits 13 and electrically and electrically connected by a conductive adhesive (not shown).
Hold by mechanical connection. In addition, the outer peripheral portion at the center end of the crystal blank 1 is electrically connected to the metal base 2 by the auxiliary tool 14. The auxiliary tool 14 is made of, for example, a thin metal wire 14 and is connected by a similar conductive adhesive 15. Then, the outer peripheral portion at the center end of the crystal blank 1 is brought as close as possible to the metal base 2 so as to reduce the size, particularly the height.
【０００４】[0004]
【従来技術の問題点】しかしながら、上記構成の水晶振
動子では、小型化に際し、水晶片１の中央端外周部を金
属ベース２に極力接近させるので、金属細線１４の水晶
片への接続作業時に、余剰の導電性接着剤１５が中央端
外周部と金属ベース２とを直接的に接続させることがあ
った（第６図）。したがって、この場合には、水晶片１
の中央端外周部が固定端となるため、例えば抵抗溶接等
によりカバー（未図示）を金属ベース２に接合（封止）
する際、封止前後において特性変動を来す所謂耐衝撃性
の劣化する問題があった。すなわち、水晶片１の両端外
周部と中央端外周部との３点が固定端となり、例えばベ
ース変形等に伴う応力の逃げ場かなくなり、応力感度特
性に起因した周波数変化を防止できない問題があった。However, in the crystal resonator having the above-described structure, the outer peripheral portion of the central end of the crystal blank 1 is brought as close as possible to the metal base 2 in miniaturization. In some cases, the excess conductive adhesive 15 may directly connect the outer peripheral portion of the center end to the metal base 2 (FIG. 6). Therefore, in this case, the crystal blank 1
The outer periphery of the center end is a fixed end, so that a cover (not shown) is joined (sealed) to the metal base 2 by resistance welding, for example.
In this case, there is a problem that the so-called impact resistance is deteriorated, which causes characteristic fluctuations before and after sealing. That is, the three points of the outer periphery of both ends of the crystal blank 1 and the outer periphery of the center end are fixed ends, so that there is no place for stress to escape due to deformation of the base or the like, and there is a problem that frequency change due to stress sensitivity characteristics cannot be prevented. .
【０００５】[0005]
【発明の目的】本発明は、耐衝撃性を良好として小型化
を促進する水晶振動子を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a crystal resonator which has good impact resistance and promotes miniaturization.
【０００６】[0006]
【解決手段】本発明は、水晶片の中央端外周部を金属ベ
ースに接続する補助具を金属平板から形成し、該金属平
板の一端部を固定端として前記水晶片の中央端外周部か
ら離れた部分の金属ベース上に接続し、該金属平板の他
端部を金属ベースに対して自由端として水晶片の中央端
外周部とを接続したことを解決手段とする。以下、本発
明の一実施例を説明する。According to the present invention, an auxiliary tool for connecting an outer peripheral portion of a central end of a crystal blank to a metal base is formed from a metal flat plate, and one end of the metal flat plate is fixed to an outer peripheral portion of the central end of the crystal blank. The solution is that the other end of the flat metal plate is connected to the outer periphery of the central end of the crystal blank with the other end of the flat metal plate as a free end with respect to the metal base. Hereinafter, an embodiment of the present invention will be described.
【０００７】[0007]
【実施例】第１図及び第２図は本発明の一実施例を説明
する図で、第１図はカバーを除く水晶振動子の図、第２
図は正面図である。なお、前従来例図と同一部分には同
番号を付与し、その説明は簡略する。水晶振動子は、前
従来例と同様に水晶片１の両端外周部をサポータにより
保持し、水晶片１の中央端外周部を、本考案の主をなす
補助具２０により、金属ベース２に電気的に接続してな
る。この実施例での補助具２０は、水平部２１と垂直部
２２とかなる平面形状を略逆Ｌ字状とした約５０μｍ程
度の金属薄板からなる。水平部２１の先端には金属ベー
ス２との接続ランド（ベース接続ランドとする）２３を
屈曲して設けられる。垂直部２２の先端には水晶片１の
中央端外周部との接続ランド（中央端接続ランドとす
る）２４を設けられている。また、垂直部２２の中央部
分にはには尾根状の突出部２５が形成されている。突出
部２５の高さは金属ベース２の表面から約１００μｍ程
度である。なお、水平部２１の先端側を一端部とし、垂
直部２２の先端側を他端部とする。そして、ベース接続
ランド２３を金属ベース２の一端側にスポット溶接して
固着する。また、中央端接続ランド２４を水晶片１の中
央端外周部に接近させ、尾根状の突出部２５と導電性接
着剤１５により固着する構成とする。すなわち、金属薄
板の一端部を固定端として金属ベース２上に接続し、他
端部を金属ベース２に対して自由端として水晶片１の中
央端外周部と接続した構成とする。1 and 2 are views for explaining an embodiment of the present invention. FIG. 1 is a view of a crystal unit without a cover, and FIG.
The figure is a front view. The same parts as those in the prior art are denoted by the same reference numerals, and description thereof will be simplified. In the same manner as in the prior art, the crystal unit holds the outer peripheral portions of both ends of the crystal blank 1 with supporters, and electrically connects the outer peripheral portion of the central end of the crystal blank 1 to the metal base 2 by the auxiliary tool 20 which is a main component of the present invention. Connection. The auxiliary tool 20 in this embodiment is made of a thin metal plate having a horizontal portion 21 and a vertical portion 22 and having a substantially inverted L-shape in plan view and having a thickness of about 50 μm. A connection land (referred to as a base connection land) 23 with the metal base 2 is provided at the tip of the horizontal portion 21 by bending. At the tip of the vertical portion 22, a connection land (referred to as a center end connection land) 24 with the outer periphery of the center end of the crystal blank 1 is provided. A ridge-shaped protrusion 25 is formed at the center of the vertical portion 22. The height of the projection 25 is about 100 μm from the surface of the metal base 2. The leading end of the horizontal portion 21 is defined as one end, and the leading end of the vertical portion 22 is defined as the other end. Then, the base connection land 23 is fixed to one end side of the metal base 2 by spot welding. In addition, the center end connection land 24 is made to approach the center end outer peripheral portion of the crystal blank 1, and is fixed to the ridge-shaped protrusion 25 with the conductive adhesive 15. That is, one end of the thin metal plate is connected to the metal base 2 as a fixed end, and the other end is connected to the outer periphery of the central end of the crystal blank 1 as a free end with respect to the metal base 2.
【０００８】このようなものでは、水晶片１の中央端外
周部は、金属薄板の自由端とした他端部に固着される。
したがって、カバー（未図示）の封止時等における衝撃
は、金属薄板により吸収（緩衝）される。すなわち、金
属薄板は前述のように約５０μ程度でその機械的強度が
小さく、固定端から自由端までの機械的な変形あるいは
弾性により吸収される。特に、この実施例では、Ｌ字状
に屈曲させたので、その緩衝作用を高めることができ
る。このようなことから、水晶片１に応力が留まること
なく、これによる周波数変化等の特性を防止し、耐衝撃
性を向上する。そして、金属ベース２と中央端外周部と
の距離は金属薄板の突出部２５となるので、全体の高さ
寸法を縮小できる。さらに、この実施例では、尾根状の
突出部により、中央端外周部とを点的に固着でき、振動
特性への悪影響を防止する効果をも奏する。なお、突出
部２５は緩衝作用をも高める。In such a device, the outer peripheral portion of the central end of the crystal blank 1 is fixed to the other end of the thin metal plate which is a free end.
Therefore, an impact when the cover (not shown) is sealed or the like is absorbed (buffered) by the thin metal plate. That is, as described above, the metal sheet has a small mechanical strength of about 50 μm, and is absorbed by mechanical deformation or elasticity from the fixed end to the free end. In particular, in this embodiment, since it is bent in an L-shape, its buffering action can be enhanced. For this reason, characteristics such as a frequency change due to the stress are prevented from remaining in the crystal blank 1 and the impact resistance is improved. Since the distance between the metal base 2 and the outer peripheral portion of the central end becomes the protruding portion 25 of the thin metal plate, the overall height can be reduced. Further, in this embodiment, the ridge-shaped protrusion can be point-fixed to the outer peripheral portion at the center end, and also has an effect of preventing an adverse effect on vibration characteristics. Note that the protruding portion 25 also enhances the buffering action.
【０００９】[0009]
【他の事項】なお、上記実施例では、補助具２０として
の金属薄板を逆Ｌ字状として尾根状の突出部２５をもつ
として説明したが、基本的には、単に直線状の金属薄板
としても他の例えばＳ、Ｗ字状としてもよく、要は一端
部を固定端として他端部を自由端とし、平板状として高
さ寸法をとることなく緩衝作用をもたせるものであれば
よいものである。[Other Matters] In the above embodiment, the metal thin plate as the auxiliary tool 20 has been described as having an inverted L-shape and having a ridge-shaped protruding portion 25. However, basically, it is simply a straight metal thin plate. For example, the shape may be an S or W shape. In other words, any shape may be used as long as one end is a fixed end, the other end is a free end, and a buffer shape is provided without taking a height dimension. is there.
【００１０】[0010]
【発明の効果】本発明は、水晶片の中央端外周部を金属
ベースに接続する補助具を金属薄板から形成し、該金属
薄板の一端部を固定端として前記水晶片の中央端外周部
から離れた部分の金属ベース上に接続し、該金属薄板の
他端部を金属ベースに対して自由端として水晶片の中央
端外周部とを接続したので、耐衝撃性を良好として小型
化を促進する水晶振動子を提供できる。According to the present invention, an auxiliary tool for connecting an outer peripheral portion of a central end of a crystal blank to a metal base is formed from a thin metal plate, and one end of the thin metal plate is fixed to the outer peripheral portion of the central end of the crystal blank. Since the other end of the thin metal plate is connected to the outer periphery of the central end of the crystal blank as a free end with respect to the metal base, the impact resistance is improved and the miniaturization is promoted. Can be provided.
【００１１】[0011]
【図１】第１図は本考案の一実施例を説明するカバーを
除く水晶振動子の図である。FIG. 1 is a view of a crystal unit excluding a cover for explaining an embodiment of the present invention.
【図２】第２図本考案の一実施例を説明するカバーを除
く水晶振動子の正面図である。FIG. 2 is a front view of the crystal unit excluding a cover for explaining an embodiment of the present invention.
【図３】第３図は従来例を説明するカバーを除く水晶振
動子の図である。FIG. 3 is a view of a crystal unit excluding a cover for explaining a conventional example.
【図４】第４図は水晶片の一主面側の平面図である。FIG. 4 is a plan view of one main surface side of a crystal blank.
【図５】第５図は水晶片の他主面側の平面図である。FIG. 5 is a plan view of the other main surface side of the crystal piece.
【図６】第６図は従来例を説明するカバーを除く水晶振
動子の正面図である。FIG. 6 is a front view of a crystal unit excluding a cover for explaining a conventional example.
２０ 補助具（金属平板）、２１ 水平部、２２ 垂直
部、２３ ベース接続ランド、２４ 中央端接続ラン
ド、２５ 突出部Reference Signs List 20 auxiliary tool (metal flat plate), 21 horizontal part, 22 vertical part, 23 base connection land, 24 center end connection land, 25 projecting part
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭56−103517（ＪＰ，Ａ) 実開 昭64−38018（ＪＰ，Ｕ) 実開 昭63−136426（ＪＰ，Ｕ) 実開 昭63−49818（ＪＰ，Ｕ) 実開 昭63−90319（ＪＰ，Ｕ) 実開 平２−1917（ＪＰ，Ｕ) 実開 昭61−52825（ＪＰ，Ｕ) 実公 昭62−46333（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.7，ＤＢ名) H03H 9/00 - 9/215 H03H 9/54 - 9/60 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-56-103517 (JP, A) JP-A 64-38018 (JP, U) JP-A 63-136426 (JP, U) JP-A 63-136426 49818 (JP, U) JP-A 63-90319 (JP, U) JP-A 2-1917 (JP, U) JP-A 61-52825 (JP, U) JP-A 62-46333 (JP, Y2) (58) Field surveyed (Int.Cl. 7 , DB name) H03H 9/00-9/215 H03H 9/54-9/60
Claims (1)
端外周部に入出力用引出電極を延出し、該水晶片の他主
面に前記入出力電極と対向する共通電極を形成して前記
両端外周部間の中央端外周部に共通用引出電極を延出
し、前記両端外周部を金属ベース上に立設したサポータ
により電気的・機械的に接続するとともに前記中央端外
周部を前記金属ベースに接近させて補助具により電気的
に接続した水晶振動子において、前記補助具を水平部と
垂直部からなるＬ字状とした金属薄板から形成し、前記
金属薄板の板面を前記金属ベースに対面するともに前記
金属薄板の水平部の一端部を固定端として前記金属ベー
スに固着し、前記金属薄板の垂直部に尾根状の突出部を
設けて先端側を自由端とし、前記水晶片の中央端外周部
と前記尾根状の突出部とを電気的に接続したことを特徴
とする水晶振動子。An input / output electrode is formed on one main surface of a crystal piece, and an input / output lead electrode extends around the outer periphery of both ends, and a common electrode facing the input / output electrode is formed on the other main surface of the crystal piece. A common lead-out electrode is formed to extend to a central end outer peripheral portion between the both end outer peripheral portions, and the both end outer peripheral portions are electrically and mechanically connected by a supporter erected on a metal base, and the central end outer peripheral portion In a crystal unit which is close to the metal base and electrically connected by an auxiliary tool, the auxiliary tool is formed from an L-shaped thin metal plate composed of a horizontal portion and a vertical portion, and a plate surface of the thin metal plate is formed. Both facing the metal base
One end of the horizontal portion of the metal sheet is fixed to the metal base as a fixed end, a ridge-shaped protrusion is provided in the vertical portion of the metal sheet, the tip side is a free end, and the outer peripheral portion of the central end of the crystal blank is A crystal resonator, wherein the ridge-shaped protrusion is electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06918691A JP3201777B2 (en) | 1991-03-08 | 1991-03-08 | Crystal oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06918691A JP3201777B2 (en) | 1991-03-08 | 1991-03-08 | Crystal oscillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05136646A JPH05136646A (en) | 1993-06-01 |
| JP3201777B2 true JP3201777B2 (en) | 2001-08-27 |
Family
ID=13395445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06918691A Expired - Fee Related JP3201777B2 (en) | 1991-03-08 | 1991-03-08 | Crystal oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3201777B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107995799A (en) * | 2017-12-26 | 2018-05-04 | 咸阳振峰电子有限公司 | A kind of U-shaped chip for pcb board is shelved |
-
1991
- 1991-03-08 JP JP06918691A patent/JP3201777B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05136646A (en) | 1993-06-01 |
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