JPS631461Y2 - - Google Patents
Info
- Publication number
- JPS631461Y2 JPS631461Y2 JP1979117814U JP11781479U JPS631461Y2 JP S631461 Y2 JPS631461 Y2 JP S631461Y2 JP 1979117814 U JP1979117814 U JP 1979117814U JP 11781479 U JP11781479 U JP 11781479U JP S631461 Y2 JPS631461 Y2 JP S631461Y2
- Authority
- JP
- Japan
- Prior art keywords
- tuning fork
- arm
- substrate
- piezoelectric
- support
- 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
Links
- 239000000758 substrate Substances 0.000 claims description 21
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005476 soldering Methods 0.000 claims description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
【考案の詳細な説明】
本考案は圧電音叉の支持装置に関し、とくに振
動エネルギーの流出が少なく外部条件の変化によ
る周波数の変動が殆どない圧電音叉の支持装置に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support device for a piezoelectric tuning fork, and more particularly to a support device for a piezoelectric tuning fork with little vibrational energy leakage and almost no frequency fluctuation due to changes in external conditions.
音叉と圧電形の変換器とを組合わせた圧電音叉
は、共振周波数の安定性及び小形化の可能性の特
徴のため通信機器及び制御機器に広く利用されて
いる。従来技術による圧電音叉装置は、第１図に
示すごとく、ほぼＵ字形の振動体１と、その叉部
に結合される短かい支持棒４とを有し、振動子１
は該支持棒４により基板６に固定される。なお２
は振動体を励振し又は振動を検出するための圧電
体、７，８，９はリード端子である。圧電音叉の
共振周波数は音叉自体の固定端が完全に固定され
ることを仮定しているが、上述のごとく支持棒４
が短かいときは音叉自体の固定端が完全に固定さ
れず、従つて振動エネルギーが支持棒を介して流
出して損失を増大させるという欠点を有する。こ
のことは振動子のＱの低下及び共振周波数の不安
定をもたらす。 BACKGROUND OF THE INVENTION Piezoelectric tuning forks, which are a combination of a tuning fork and a piezoelectric transducer, are widely used in communication and control equipment due to their characteristics of stability of resonant frequency and possibility of miniaturization. As shown in FIG. 1, a piezoelectric tuning fork device according to the prior art has a substantially U-shaped vibrating body 1 and a short support rod 4 coupled to the fork portion of the vibrating body 1.
is fixed to the substrate 6 by the support rod 4. Note 2
1 is a piezoelectric body for exciting a vibrating body or detecting vibration, and 7, 8, and 9 are lead terminals. The resonant frequency of the piezoelectric tuning fork assumes that the fixed end of the tuning fork itself is completely fixed, but as mentioned above the support rod 4
When is short, the fixed end of the tuning fork itself is not completely fixed, which has the disadvantage that vibration energy flows out through the support rod, increasing losses. This results in a reduction in the Q of the vibrator and instability in the resonant frequency.
この欠点を改善する技術として本出願人は先に
第２図Ａ及びＢに示すごとき圧電音叉を提案した
（実願昭54−74733及び実願昭54−74734）。 As a technique for improving this drawback, the present applicant previously proposed a piezoelectric tuning fork as shown in FIGS. 2A and 2B (Utility Application No. 74733/1989 and Utility Application No. 74734/1989).
第２図Ａ及びＢは、本考案による支持装置を有
する圧電音叉装置の図式的平面図及び図式的立面
図をそれぞれ示す。図中、１はほゞＵ字形の振動
子、２は音叉に固定された圧電変換素子、３はた
とえば弾性ゴムなどからなる防振部材、４は支持
棒、５は圧電変換素子２を入出力端子８，９へ接
続するリード線、６は基板、７は接地端子をそれ
ぞれ示す。 FIGS. 2A and 2B show a schematic top view and a schematic elevational view, respectively, of a piezoelectric tuning fork device with a support device according to the invention. In the figure, 1 is a nearly U-shaped vibrator, 2 is a piezoelectric transducer fixed to a tuning fork, 3 is a vibration isolating member made of, for example, elastic rubber, 4 is a support rod, and 5 is an input/output for the piezoelectric transducer 2. Lead wires connected to terminals 8 and 9, 6 a board, and 7 a ground terminal, respectively.
振動子１自体は公知構造を有し、固定端１Ａに
よつて結合され自由端１Ｂへ延びる２本の脚部１
Ｃからなる。支持棒４の音叉端４Ａは、たとえば
溶接等の適当な方法により音叉の固定端１Ａに固
定される。他方、支持棒４のベース端４Ｂは、音
叉の自由端１Ｂの下方、すなわち音叉の基板への
垂直投影における音叉自由端１Ｂに対応する位置
において基板６に固定される。また、支持棒のベ
ース端４Ｂが、音叉の固定端直下ではなく、音叉
の自由端の下方に配置されることが重要である。 The vibrator 1 itself has a known structure, and includes two legs 1 connected by a fixed end 1A and extending to a free end 1B.
Consists of C. The tuning fork end 4A of the support rod 4 is fixed to the fixed end 1A of the tuning fork by a suitable method such as welding. On the other hand, the base end 4B of the support rod 4 is fixed to the substrate 6 below the free end 1B of the tuning fork, ie at a position corresponding to the free end 1B of the tuning fork in vertical projection onto the substrate. Furthermore, it is important that the base end 4B of the support rod is located below the free end of the tuning fork, rather than directly below the fixed end of the tuning fork.
支持棒４の音叉端４Ａとベース端４Ｂとは、中
間長足部４Ｃにより一体的に結合される。中間長
足部は、基板６と音叉１との間の空間において音
叉の固定端１Ａから自由端１Ｂの方向へ延在す
る。したがつて、中間長足部４Ｃは、基板６の頂
面から音叉１の下縁までの距離の数倍の長さとな
り、第１図に示した従来の支持棒の長さに比して
数倍の長さになる。 The tuning fork end 4A and base end 4B of the support rod 4 are integrally connected by an intermediate long leg portion 4C. The intermediate long leg portion extends in the space between the substrate 6 and the tuning fork 1 from the fixed end 1A to the free end 1B of the tuning fork. Therefore, the intermediate long leg portion 4C has a length several times the distance from the top surface of the substrate 6 to the lower edge of the tuning fork 1, and is several times longer than the length of the conventional support rod shown in FIG. It will be twice as long.
第２図Ａ及びＢの音叉は支持棒の長さが実質的
に十分に長く、共振周波数及び挿入損失が安定し
た部分で音叉を動作させることができる。 In the tuning forks of FIGS. 2A and 2B, the length of the support rod is substantially long enough to allow the tuning fork to operate in a region where the resonance frequency and insertion loss are stable.
本考案は上述の第２図Ａ及びＢの圧電音叉を更
に改良することを目的とし、その特徴はほゞＵ字
形の振動体と、ほゞ直角に折れ曲がる第１腕及び
第２腕とを有し第１腕が前記振動体の叉部に結合
される支持体と、該支持体の第２腕の先端部を前
記振動体の自由端に対応する位置で固定する基板
と、該基板を貫通する３本のリード端子と、前記
振動体にもうけられ第１及び第２のリード端子に
各々接続される１対の圧電体とを有する圧電音叉
において、前記支持体の第２腕の先端部近傍に直
角に折れ曲がる舌片がもうけられ、該舌片を前記
基板に挿入固定すると共に第２腕先端部を第３の
リード端子にハンダ付することにより支持体及び
振動体を基板に固定してなるごとき圧電音叉にあ
る。以下図面により実施例を説明する。 The purpose of the present invention is to further improve the piezoelectric tuning fork shown in FIGS. 2A and B described above, and its features include a substantially U-shaped vibrating body and first and second arms bent at substantially right angles. a support member having a first arm coupled to the fork of the vibrating body; a substrate fixing the tip of the second arm of the support body at a position corresponding to the free end of the vibrating body; and a base plate penetrating the substrate. In the piezoelectric tuning fork, the piezoelectric tuning fork has three lead terminals, and a pair of piezoelectric bodies provided on the vibrating body and connected to the first and second lead terminals, respectively, near the tip of the second arm of the support. A tongue piece is provided which is bent at a right angle to the base plate, and the support body and the vibrating body are fixed to the base plate by inserting and fixing the tongue piece into the base plate and soldering the tip of the second arm to the third lead terminal. It is found in piezoelectric tuning forks such as Examples will be described below with reference to the drawings.
第３図Ａ及びＢは本考案による支持体の構造
例、第４図Ａ及びＢは本考案による圧電音叉の立
面図及び側面図、第５図は本考案による圧電音叉
の主要部の斜視図を示す。 3A and B are structural examples of the support body according to the present invention, FIGS. 4A and B are elevational views and side views of the piezoelectric tuning fork according to the present invention, and FIG. 5 is a perspective view of the main parts of the piezoelectric tuning fork according to the present invention. Show the diagram.
本考案による支持体２０は薄い金属板から構成
され、比較的短かい第１腕２１と、これとほゞ直
角に折れ曲がる比較的長い第２腕２２とを有す
る。第２腕２２はリード端子７，８を支持体から
絶縁状態で基板６に固定するために窓２４を有
し、更にリード端子９を介して支持体２０を基板
６に固定するために孔２５がもうけられるととも
に、支持体２０を基板６に堅固に固定するために
舌片２６が前記孔２５の近傍で窓２４から直角に
折り曲げられる。一方第１腕２１は、振動子１と
の結合部の近傍に幅狭のしぼり部２３を有する。
第１腕２１は図示のごとく、しぼり部２３より振
動子側ははやゝ細く、基板側はやゝ太く構成され
る。振動子１の叉部近傍には１対の圧電体２がも
うけられ、各圧電体とリード端子７，８とは細い
リード線（図示なし）により電気的に接続され
る。なお支持体２０の基板６への固定は図示のご
とく弾性ゴム２７を介して行なわれる。又基板６
は支持体の窓２４の部分に台部２８を有する。台
部２８の幅は窓２４の幅Ｄにほゞ等しくして台部
２８を窓２４の中に挿入するか、又は台部２８の
幅を窓２４の幅よりも大として台部２８にもうけ
た１対の細長の溝に支持体を収容するごとくす
る。 The support 20 according to the present invention is made of a thin metal plate and has a relatively short first arm 21 and a relatively long second arm 22 bent at a substantially right angle thereto. The second arm 22 has a window 24 for fixing the lead terminals 7 and 8 to the substrate 6 while being insulated from the support, and a hole 25 for fixing the support 20 to the substrate 6 via the lead terminal 9. is formed, and a tongue 26 is bent at right angles from the window 24 in the vicinity of said hole 25 in order to securely fix the support 20 to the substrate 6. On the other hand, the first arm 21 has a narrow constriction portion 23 near the connection portion with the vibrator 1 .
As shown in the figure, the first arm 21 is configured to be slightly thinner on the vibrator side than the aperture portion 23 and slightly thicker on the substrate side. A pair of piezoelectric bodies 2 are provided near the prongs of the vibrator 1, and each piezoelectric body and lead terminals 7, 8 are electrically connected by thin lead wires (not shown). The support body 20 is fixed to the substrate 6 through elastic rubber 27 as shown in the figure. Also board 6
has a platform 28 at the window 24 of the support. The width of the pedestal 28 is approximately equal to the width D of the window 24 and the pedestal 28 is inserted into the window 24, or the width of the pedestal 28 is made larger than the width of the window 24 and the pedestal 28 is inserted into the window 24. The support body is accommodated in a pair of elongated grooves.
支持体２０の基板６への固定は次のごとく行な
われる。すなわち第２腕の先端近傍で窓２４の一
端から直角に折れ曲がる舌片２６を基板６に挿入
固定すると共に、第２腕の先端の孔２５にリード
端子９を挿入し、該端子９の先端を２９に示すご
とく支持体にハンダ付又はロー付する。一方弾性
ゴム２７が支持体の屈曲部近傍に台座としてもう
けられ、これにより外部からのノイズを吸収す
る。このように極めて簡単な固定構造にもかかわ
らず、音叉は安定に固定され支持体がガタつくこ
とはない。 Fixing of the support body 20 to the substrate 6 is performed as follows. That is, the tongue piece 26 bent at right angles from one end of the window 24 near the tip of the second arm is inserted and fixed into the board 6, and the lead terminal 9 is inserted into the hole 25 at the tip of the second arm, and the tip of the terminal 9 is inserted into the hole 25 at the tip of the second arm. Solder or braze to the support as shown in 29. On the other hand, an elastic rubber 27 is provided as a pedestal near the bent portion of the support, thereby absorbing noise from the outside. Despite this extremely simple fixing structure, the tuning fork is stably fixed and the support does not wobble.
しぼり部２３の存在により、振動子１振動エネ
ルギーの第２腕２２への流出が防止され、従つて
Ｑが高く、共振周波数の安定な音叉が得られる。
さらに支持体が弾性ゴム２７を介して基板に固定
されるので、弾性ゴムが外部からの衝撃ノイズを
吸収し、衝撃ノイズに強い圧電音叉が得られる。 The presence of the throttle portion 23 prevents the vibration energy of the vibrator 1 from flowing out to the second arm 22, thereby providing a tuning fork with a high Q and a stable resonance frequency.
Furthermore, since the support is fixed to the substrate via the elastic rubber 27, the elastic rubber absorbs impact noise from the outside, resulting in a piezoelectric tuning fork that is resistant to impact noise.
なおひとつの実施例として第１腕２１の幅d1＝
１mm、第２腕２２の幅d2＝２mm、支持棒の全長d3
＝23.5mm、支持体の板厚0.4mmを拳げる。 In addition, as one example, the width d 1 of the first arm 21 =
1 mm, width of second arm 22 d 2 = 2 mm, total length of support rod d 3
= 23.5mm, the thickness of the support plate is 0.4mm.
以上詳説したごとく、本考案によると、支持体
がほゞ直角に折れ曲がる比較的短かい第１腕と比
較的長い第２腕とを有し、第１腕にほゞＵ字形の
振動子が固定され、第２腕の先端が舌片とハンダ
付を介して基板に固定され、さらに第１腕の振動
子との結合部近傍に幅狭のしぼり部がもうけられ
る。従つて振動子のエネルギーの流出が防止さ
れ、Ｑが高く共振周波数の安定な圧電音叉が極め
て簡単な構造で基板に固定される。 As explained in detail above, according to the present invention, the support body has a relatively short first arm bent at a substantially right angle and a relatively long second arm, and a substantially U-shaped vibrator is fixed to the first arm. The tip of the second arm is fixed to the substrate via the tongue piece and soldered, and a narrow constriction portion is provided near the connection portion of the first arm with the vibrator. Therefore, leakage of energy from the vibrator is prevented, and a piezoelectric tuning fork with a high Q and stable resonance frequency can be fixed to the substrate with an extremely simple structure.
第１図は従来の圧電音叉の構造例、第２図Ａ及
びＢは従来の圧電音叉の別の構造例、第３図Ａ及
びＢは本考案による支持体の構造例、第４図Ａ及
びＢは本考案による圧電音叉の立面図及び側面
図、第５図は本考案による圧電音叉の斜視図であ
る。
１……振動子、２……圧電体、６……基板、２
０……支持体、２１……第１腕、２２……第２
腕、２３……しぼり部、２４……窓、２５……
孔、２６……舌片、２７……弾性ゴム、２８……
台部。
FIG. 1 is a structural example of a conventional piezoelectric tuning fork, FIGS. 2A and B are other structural examples of a conventional piezoelectric tuning fork, FIGS. 3A and B are structural examples of a support according to the present invention, and FIGS. 4A and B is an elevation view and a side view of the piezoelectric tuning fork according to the present invention, and FIG. 5 is a perspective view of the piezoelectric tuning fork according to the present invention. 1... Vibrator, 2... Piezoelectric body, 6... Substrate, 2
0... Support body, 21... First arm, 22... Second
Arm, 23...Shibori part, 24...Window, 25...
Hole, 26... Tongue piece, 27... Elastic rubber, 28...
Daibu.
Claims (1)
第１腕及び第２腕とを有し第１腕が前記振動体の
叉部に結合される支持体と、該支持体の第２腕の
先端部を前記振動体の自由端に対応する位置で固
定する基板と、該基板を貫通する３本のリード端
子と、前記振動体にもうけられ第１及び第２のリ
ード端子に各々接続される１対の圧電体とを有す
る圧電音叉において、 前記支持体の第２腕の先端部近傍に直角に折れ
曲がる舌片がもうけられ、該舌片を前記基板に挿
入固定すると共に第２腕先端部を第３のリード端
子にハンダ付けすることにより支持体及び振動体
を基板に固定してなることを特徴とする圧電音
叉。[Claims for Utility Model Registration] A support body comprising a substantially U-shaped vibrating body, first and second arms bent at substantially right angles, the first arm being coupled to the prongs of the vibrating body; a substrate for fixing the tip of the second arm of the support body at a position corresponding to the free end of the vibrating body; three lead terminals penetrating the substrate; and first and second lead terminals provided on the vibrating body; In a piezoelectric tuning fork having a pair of piezoelectric bodies each connected to a lead terminal, a tongue piece bent at a right angle is provided near the tip of the second arm of the support body, and the tongue piece is inserted and fixed into the substrate. A piezoelectric tuning fork characterized in that the supporting body and the vibrating body are fixed to the substrate by soldering the tip of the second arm to the third lead terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979117814U JPS631461Y2 (en) | 1979-08-29 | 1979-08-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979117814U JPS631461Y2 (en) | 1979-08-29 | 1979-08-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5637521U JPS5637521U (en) | 1981-04-09 |
| JPS631461Y2 true JPS631461Y2 (en) | 1988-01-14 |
Family
ID=29350026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979117814U Expired JPS631461Y2 (en) | 1979-08-29 | 1979-08-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS631461Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS43806Y1 (en) * | 1964-02-18 | 1968-01-17 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54120383U (en) * | 1978-02-10 | 1979-08-23 |
-
1979
- 1979-08-29 JP JP1979117814U patent/JPS631461Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS43806Y1 (en) * | 1964-02-18 | 1968-01-17 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5637521U (en) | 1981-04-09 |
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