JPH0528124U - Piezoelectric filter - Google Patents
Piezoelectric filterInfo
- Publication number
- JPH0528124U JPH0528124U JP8482091U JP8482091U JPH0528124U JP H0528124 U JPH0528124 U JP H0528124U JP 8482091 U JP8482091 U JP 8482091U JP 8482091 U JP8482091 U JP 8482091U JP H0528124 U JPH0528124 U JP H0528124U
- Authority
- JP
- Japan
- Prior art keywords
- metal case
- leg
- legs
- connecting legs
- piezoelectric
- 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.)
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- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
(57)【要約】
【目的】 端子板の接続脚をクランク状に折曲してサー
フェイスマウント型式でプリント基板に実装される圧電
フィルタにおいて、チャッカーＣ，Ｃで搬送する際の接
続脚の変形を防止すること。
【構成】 金属ケース８の端縁から突出する接続脚８ｂ
の突出長を端子板３，４の接続脚３ｂ，４ｂの突出長よ
りも長くしたから、チャッカーＣ，Ｃにより咬着される
際に、前記金属ケース８の接続脚８ｂの先端が金属ケー
ス８の後面とで挟持されることとなる。このため、この
接続脚８ｂは、金属ケース８を延出したものであるか
ら、厚肉で剛性があり、このため前記チャッカーＣ，Ｃ
によっては、容易に変形せず、また前記端子板３，４の
接続脚３ｂ，４ｂはチャッカーＣ，Ｃの挟圧力による影
響を受けないから、各接続脚３ｂ，４ｂ，８ｂの搬送工
程での変形を防止することができる。
(57) [Abstract] [Purpose] In a piezoelectric filter mounted on a printed circuit board in a surface mount type by bending the connecting legs of the terminal board into a crank shape, the connecting legs are deformed when they are conveyed by the chuckers C, C. To prevent. [Structure] Connection leg 8b protruding from the edge of the metal case 8
Since the protruding length of the connecting legs 3b and 4b of the terminal plates 3 and 4 is longer than the protruding length of the connecting legs 3b and 4b of the terminal plates 3 and 4, the tip of the connecting leg 8b of the metal case 8 is the metal case 8 when bitten by the chuckers C and C. It will be pinched with the rear surface. Therefore, since the connecting leg 8b is formed by extending the metal case 8, the connecting leg 8b is thick and has rigidity.
, The connecting legs 3b, 4b of the terminal boards 3, 4 are not affected by the clamping force of the chuckers C, C, so that the connecting legs 3b, 4b, 8b are not easily deformed. Deformation can be prevented.
Description
【０００１】[0001]
本考案は、複数の圧電共振子を利用した携帯用電話等に用いられる圧電フィル タに関するものである。 The present invention relates to a piezoelectric filter used in a mobile phone or the like using a plurality of piezoelectric resonators.
【０００２】[0002]
圧電フィルタは、複数の圧電共振子と、これら共振子の振動節部に当接して電 気的機械的に挟持する複数の端子板と、絶縁板とを、夫々図５Ａ，Ｂに示すよう なラダー型フィルタ回路を構成するように、ケース内に収納すると共に入力端子 板及び出力端子板等の接続脚を外方に導出するケース開口面をエポキシ樹脂等の 絶縁樹脂層によって封塞した後、各接続脚をクランク状（図１，３参照）に折曲 し、該接続脚と、あらかじめ金属ケースの端縁から突出した接続脚とにより、サ ーフェイスマウント型式でプリント基板に実装できるようにした構造となってい る。 The piezoelectric filter includes a plurality of piezoelectric resonators, a plurality of terminal plates that abut the vibrating nodes of these resonators to electrically and mechanically sandwich them, and an insulating plate, as shown in FIGS. 5A and 5B, respectively. After constructing a ladder type filter circuit, the case opening surface that houses the inside of the case and guides the connecting legs of the input terminal plate and output terminal plate to the outside is sealed with an insulating resin layer such as epoxy resin, Each connecting leg is bent into a crank shape (see Figs. 1 and 3), and by the connecting leg and the connecting leg protruding from the edge of the metal case in advance, it is possible to mount it on the printed circuit board in a surface mount type. It has a structure.
【０００３】[0003]
前記接続脚はプリント基板の所要導電路に半田ペーストによって接合されるが 、該半田ペーストの厚が大であると、蝋だれを生じ易く、かつ不経済であると共 に、圧電フィルタの据付高さが大きくなって、携帯用電話等の小型化に対応でき ない。そこで、半田ペーストは薄肉化され、最近では１００μｍ程度が要求され るようになってきた。そしてこれにともなって半田の未接合部分を生じて接合強 度が低下し易く、そこでこれを補うために、接続脚の厚さを０．１ｍｍ程度の極 薄状とし、図４に示すように接続脚の半田ペーストへの加熱圧着に伴って、その 上面も半田ペーストで覆われるようにして、接合面を実質的に拡大するように工 夫されてきている。 The connection leg is joined to the required conductive path of the printed circuit board with solder paste. If the thickness of the solder paste is large, it is easy to cause waxing and it is uneconomical. However, the size of the mobile phone cannot be miniaturized. Therefore, the thickness of the solder paste has been reduced, and recently, about 100 μm has been required. As a result, unbonded portions of the solder are generated and the bonding strength is likely to decrease. To compensate for this, the thickness of the connecting leg is made extremely thin, about 0.1 mm, as shown in Fig. 4. With the thermal compression of the connection leg to the solder paste, the upper surface of the connection leg is also covered with the solder paste, and the joint surface has been substantially expanded.
【０００４】 この圧電フィルタは、前記プリント基板に自動的に装架され、かつ半田付を施 されて実装されるが、かかる接合工程に際して、チップマウンターに搭載するた めに、図３に示すようにチャッカーＣ，Ｃにより、接続脚の先端とケースの後面 を挟まれて移送される。ところで、上述したように接続脚の厚が薄くなると、前 記チャッカーＣ，Ｃによる咬着操作によって、接続脚が変形し易く、このため、 接続脚の接合端部の平面度がバラ付いて、圧電フィルタがプリント基板上に整一 に取付けられないという問題を生じた。 本考案は、接続脚の薄肉化に伴う移送時の変形を防止することを目的とするも のである。This piezoelectric filter is automatically mounted on the printed circuit board and mounted by soldering, and as shown in FIG. 3 in order to mount it on the chip mounter during the bonding process. Then, the chuckers C, C sandwich the front end of the connecting leg and the rear surface of the case, and transfer. By the way, when the thickness of the connecting leg becomes thin as described above, the connecting leg is easily deformed by the biting operation by the chuckers C and C described above. Therefore, the flatness of the joint end portion of the connecting leg varies, There was a problem that the piezoelectric filter could not be mounted uniformly on the printed circuit board. The purpose of the present invention is to prevent deformation at the time of transfer due to thinning of the connecting leg.
【０００５】[0005]
本考案は、金属ケースの端縁から突出する接続脚の突出長を、端子板の接続脚 の突出長よりも長くしたことを特徴とするものである。 The present invention is characterized in that the protruding length of the connecting leg protruding from the edge of the metal case is longer than the protruding length of the connecting leg of the terminal board.
【０００６】[0006]
図３に示すようにチャッカーＣ，Ｃにより咬着される際に、前記金属ケースの 接続脚は、端子板の接続脚よりも長いため、該金属ケースの接続脚先端が金属ケ ースの後面とで挟持されることとなる。ところで、この金属ケースの接続脚は、 金属ケースを延出したものであるから、厚肉で剛性があり、このため前記チャッ カーＣ，Ｃの挟圧力によっては、容易に変形しない。また前記端子板の接続脚は チャッカーＣ，Ｃの挟圧力が作用せず、当然ながら変形を免れる。 As shown in FIG. 3, when the chuckers C, C bite, the connecting legs of the metal case are longer than the connecting legs of the terminal board, so the tips of the connecting legs of the metal case are attached to the rear surface of the metal case. It will be sandwiched between and. By the way, since the connecting leg of the metal case is formed by extending the metal case, it is thick and has rigidity, and therefore is not easily deformed by the clamping force of the chucks C, C. Further, the connecting leg of the terminal board is not deformed by the clamping force of the chuckers C and C, and is naturally deformed.
【０００７】[0007]
本考案を図５Ａに示す逆Ｌ接続型ラダー型フィルタ回路を構成する圧電フィル タＦを例にとって説明する。 図１において、１はフィルタ回路の直列枝に配される厚肉小容量の圧電共振子 、２は同じく並列枝に配される薄肉大容量の圧電共振子であって、該圧電共振子 １，２の両側には、中央に突設した小突起３ａ〜６ａにより該共振子１，２を電 気的機械的に挟持する方形の端子板３〜６が配設される。このうち、端子板３は 入力用、端子板４は出力用、端子板５は接地用、端子板６は中間連結用として夫 々用いられる。また入力端子板３及び出力端子板４の一辺からは、互いの反対端 より突出する帯状の接続脚３ｂ，４ｂが設けられる。また７はゴム等の絶縁板で あって、前記圧電共振子１，２が図５Ａに示すラダー型フィルタ回路を構成し得 るように適宜箇所、ここでは後記するケース内面と入力端子板３との間に介在さ れる。 The present invention will be described by taking as an example a piezoelectric filter F which constitutes a ladder filter circuit of the reverse L connection type shown in FIG. 5A. In FIG. 1, reference numeral 1 is a thick-walled small-capacity piezoelectric resonator arranged in a series branch of a filter circuit, 2 is a thin-walled large-capacity piezoelectric resonator also arranged in a parallel branch, the piezoelectric resonator 1, Rectangular terminal plates 3 to 6 for electro-mechanically sandwiching the resonators 1 and 2 by small protrusions 3a to 6a provided at the center are arranged on both sides of the plate 2. Of these, the terminal plate 3 is used for input, the terminal plate 4 is used for output, the terminal plate 5 is used for grounding, and the terminal plate 6 is used for intermediate connection. Further, strip-shaped connecting legs 3b and 4b projecting from opposite ends of the input terminal plate 3 and the output terminal plate 4 are provided. Reference numeral 7 denotes an insulating plate made of rubber or the like, which is appropriately arranged so that the piezoelectric resonators 1 and 2 can form the ladder type filter circuit shown in FIG. 5A. Intervened between.
【０００８】 上記圧電共振子１，２と入力端子板３〜６と、絶縁板７は、金属製ケース８内 に縦列に収納され、その開口面８ａより入力端子板３の接続脚３ｂと出力端子板 ４の接続脚４ｂとが外方に導出される。この金属製ケース８は接地用端子板５と 当接して接地端子を兼ねると共に、開口面８ａの一側縁中央部より入力端子側接 続脚３ｂと出力端子側接続脚４ｂと同方向に突出する帯状の接地接続脚８ｂを備 える。The piezoelectric resonators 1 and 2, the input terminal plates 3 to 6, and the insulating plate 7 are housed in a row in a metal case 8 and are connected to the connecting legs 3b of the input terminal plate 3 and the output from the opening surface 8a. The connection leg 4b of the terminal plate 4 is led out to the outside. The metal case 8 abuts on the grounding terminal plate 5 to serve also as a grounding terminal, and protrudes in the same direction as the input terminal side connecting leg 3b and the output terminal side connecting leg 4b from the center of one side edge of the opening surface 8a. A strip-shaped ground connection leg 8b is provided.
【０００９】 前記金属製ケース８の開口面８ａには、紙等の薄片１１（必須ではない）を介 して弾性エポキシ樹脂等の弾性充填材からなる絶縁樹脂層９が充填硬化されて、 該開口面８ａが封塞される。そして前記絶縁樹脂層９の充填後に、接続脚３ｂと 接続脚４ｂはクランク状に折曲される。The opening surface 8a of the metal case 8 is filled and cured with an insulating resin layer 9 made of an elastic filler such as an elastic epoxy resin via a thin piece 11 (not essential) such as paper, The opening surface 8a is closed. After filling the insulating resin layer 9, the connecting legs 3b and 4b are bent in a crank shape.
【００１０】 次に本考案の要部について説明する。 前記接続脚３ｂと接続脚４ｂの各長さはクランク状に折曲して略同一長さとな るように設定している。またこの接続脚３ｂと接続脚４ｂは０．１ｍｍ程度の極 薄状として、図４に示すように、半田ペースト層ｆに加熱圧着した場合に、その 半田ペーストが上面にまで及んでその接合強度を保持し得るようにしている。一 方、接続脚８ｂはその突出長さを前記接続脚３ｂと接続脚４ｂの折曲後の突出長 よりも少し長くしている。このため図２に示すように、圧電フィルタＦはチップ マウンターに搭載するために、チャッカーＣ，Ｃにより、接続脚の先端とケース の後面を挟まれて移送されるが、前記接続脚８ｂが、他の接続脚３ｂ，４ｂより 突出しているため、その先端が挟持される。ところで、この接続脚８ｂは金属ケ ース８の一部を延成して形成されているものであり、このため、薄肉化が不能で あり、従って接続脚３ｂ，４ｂに比して厚肉で、剛性に富んでいる。従って、前 記チャッカーＣ，Ｃで挟持されても、変形することがない。Next, a main part of the present invention will be described. The lengths of the connecting leg 3b and the connecting leg 4b are set so as to be bent in a crank shape and have substantially the same length. Further, when the connecting legs 3b and 4b have an extremely thin shape of about 0.1 mm, as shown in FIG. 4, when the solder paste layer f is thermocompression bonded, the solder paste reaches the upper surface and the bonding strength thereof is increased. To be able to hold. On the other hand, the projecting length of the connecting leg 8b is made slightly longer than the projecting length of the connecting leg 3b and the connecting leg 4b after bending. Therefore, as shown in FIG. 2, since the piezoelectric filter F is mounted on the chip mounter, it is transferred by the chuckers C, C while sandwiching the tip of the connecting leg and the rear surface of the case. Since it protrudes from the other connecting legs 3b and 4b, its tips are clamped. By the way, since the connecting leg 8b is formed by extending a part of the metal case 8, it is impossible to reduce the wall thickness. Therefore, the connecting leg 8b is thicker than the connecting legs 3b and 4b. And, it is rich in rigidity. Therefore, even if it is sandwiched by the chuckers C, C, it does not deform.
【００１１】 従って各接続脚３ｂ，４ｂ，８ｂの接合端部の平面度が損なわれることはなく 、プリント基板Ｐの所要導電路に半田ペースト層ｆを介して接合した場合に、圧 電フィルタＦはプリント基板Ｐに対して水平に保持される。而して、上記構成に よる圧電フィルタＦは図３に示す様にプリント配線基板Ｐの上面にサーフェイス マウント型式で整一に実装されることになる。Therefore, the flatness of the joint ends of the connecting legs 3b, 4b, 8b is not impaired, and the piezoelectric filter F is joined to the required conductive path of the printed board P via the solder paste layer f. Are held horizontally with respect to the printed circuit board P. Thus, the piezoelectric filter F having the above structure is uniformly mounted on the upper surface of the printed wiring board P by the surface mount type as shown in FIG.
【００１２】 尚、上例は直列枝圧電共振子１と、並列枝圧電共振子２とを各一個用いたもの であるが、図５Ｂのフィルタ回路のように夫々複数の圧電共振子１，２により構 成した圧電フィルタにおいても適用できる。また金属ケース８を回路の接地側に 接続したが、入力側又は出力側に接続することもできるIn the above example, one serial branch piezoelectric resonator 1 and one parallel branch piezoelectric resonator 2 are used, but a plurality of piezoelectric resonators 1 and 2 are provided as in the filter circuit of FIG. 5B. It can also be applied to a piezoelectric filter configured by. Further, although the metal case 8 is connected to the ground side of the circuit, it may be connected to the input side or the output side.
【００１３】[0013]
上述したように、本考案は、端子板の接続脚をクランク状に折曲してサーフェ イスマウント型式でプリント基板に実装される圧電フィルタＦにおいて、金属ケ ース８の端縁から突出する接続脚８ｂの突出長を端子板３，４の接続脚３ｂ，４ ｂの突出長よりも長くしたから、チャッカーＣ，Ｃにより咬着される際に、前記 金属ケース８の接続脚８ｂの先端が金属ケース８の後面とで挟持されることとな る。このため、この接続脚８ｂは、金属ケース８を延出したものであるから、厚 肉で剛性があり、このため前記チャッカーＣ，Ｃによっては、容易に変形せず、 また前記端子板３，４の接続脚３ｂ，４ｂはチャッカーＣ，Ｃの挟圧力による影 響を受けないから、各接続脚３ｂ，４ｂ，８ｂの搬送工程での変形を防止するこ とができ、圧電フィルタＦはプリント基板Ｐの上面にサーフェイスマウント型式 で整一に実装され得ることとなる優れた効果がある。 As described above, according to the present invention, in the piezoelectric filter F mounted on the printed circuit board in the surface mount type by bending the connection leg of the terminal plate in a crank shape, the connection protruding from the edge of the metal case 8 is connected. Since the projecting length of the leg 8b is made longer than the projecting length of the connecting legs 3b and 4b of the terminal boards 3 and 4, when the chuckers C and C bite, the tip of the connecting leg 8b of the metal case 8 is It will be clamped by the rear surface of the metal case 8. For this reason, since the connecting leg 8b is formed by extending the metal case 8, it is thick and has rigidity, so that it is not easily deformed by the chuckers C, and the terminal plate 3, Since the connecting legs 3b, 4b of 4 are not affected by the clamping pressure of the chuckers C, C, it is possible to prevent the connecting legs 3b, 4b, 8b from being deformed in the transfer process, and the piezoelectric filter F is printed. There is an excellent effect that it can be uniformly mounted on the upper surface of the substrate P by the surface mount type.
【図１】本考案の一実施例を示す縦断側面図である。FIG. 1 is a vertical side view showing an embodiment of the present invention.
【図２】圧電フィルタＦのチャッカーＣ，Ｃによる咬着
状態を示す平面図である。FIG. 2 is a plan view showing an occlusal state of chucks C and C of a piezoelectric filter F. FIG.
【図３】プリント配線基板Ｐへの実装状態を示す斜視図
である。FIG. 3 is a perspective view showing a mounting state on a printed wiring board P.
【図４】接合端部ｙの半田ペースト層ｆとの接合状態を
示す縦断側面図である。FIG. 4 is a vertical cross-sectional side view showing a joining state of a joining end portion y with a solder paste layer f.
【図５Ａ】逆Ｌ接続型のラダー型フィルタ回路図であ
る。FIG. 5A is an inverse L connection type ladder filter circuit diagram.
【図５Ｂ】多段接続型のラダー型フィルタ回路図であ
る。FIG. 5B is a ladder filter circuit diagram of a multi-stage connection type.
１ 直列枝圧電共振子 ２ 並列枝圧電共振子 ３ 入力端子板 ３ｂ 接続脚 ４ 出力端子板 ４ｂ 接続脚 ８ 金属ケース ８ｂ 接続脚 ９ 絶縁樹脂層 Ｆ 圧電フィルタ 1 series branch piezoelectric resonator 2 parallel branch piezoelectric resonator 3 input terminal board 3b connection leg 4 output terminal board 4b connection leg 8 metal case 8b connection leg 9 insulating resin layer F piezoelectric filter
Claims (1)
部に当接して電気的機械的に挟持する複数の端子板と、
所定のフィルタ回路を構成するために適宜箇所に介挿さ
れる絶縁板と、これら部品を縦列に収納すると共に開口
面より各端子板の脚部を外部に導出する金属ケースと、
該金属ケースの開口面を略面一状に封塞する絶縁樹脂層
とからなり、各端子板の接続脚をクランク状に折曲し、
かつ金属ケースの端縁から接続脚を突出して、各接続脚
によりサーフェイスマウント型式でプリント基板に実装
される圧電フィルタにおいて、金属ケースの端縁から突
出する接続脚の突出長を、端子板の接続脚の突出長より
も長くしたことを特徴とする圧電フィルタ。1. A plurality of piezoelectric resonators, and a plurality of terminal plates that abut the vibration nodes of the resonators and electrically and mechanically sandwich the terminal plates.
An insulating plate that is inserted at an appropriate location to form a predetermined filter circuit, and a metal case that houses these components in a column and guides the legs of each terminal plate from the opening surface to the outside.
An insulating resin layer that seals the opening surface of the metal case in a substantially flush manner, and bends the connecting legs of each terminal plate into a crank shape,
Moreover, in the piezoelectric filter in which the connection legs are projected from the edge of the metal case and mounted on the printed circuit board by the surface mount type by each connection leg, the protruding length of the connection leg protruding from the edge of the metal case is set to the terminal plate connection. A piezoelectric filter characterized in that it is longer than the protruding length of the leg.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991084820U JPH083064Y2 (en) | 1991-09-21 | 1991-09-21 | Piezoelectric filter |
| US07/944,989 US5392012A (en) | 1991-09-18 | 1992-09-15 | Piezoelectric filter in a casing sealed by an insulating filler and having cranked connecting legs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991084820U JPH083064Y2 (en) | 1991-09-21 | 1991-09-21 | Piezoelectric filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0528124U true JPH0528124U (en) | 1993-04-09 |
| JPH083064Y2 JPH083064Y2 (en) | 1996-01-29 |
Family
ID=13841389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991084820U Expired - Lifetime JPH083064Y2 (en) | 1991-09-18 | 1991-09-21 | Piezoelectric filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH083064Y2 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5531623A (en) * | 1978-08-25 | 1980-03-06 | Toyota Motor Corp | Gear ratio changer of steering device |
| JPS57195219U (en) * | 1981-06-03 | 1982-12-10 | ||
| JPS5987152U (en) * | 1982-11-30 | 1984-06-13 | 三菱電機株式会社 | Frame for semiconductor devices |
| JPH0253634U (en) * | 1988-10-08 | 1990-04-18 | ||
| JPH0255732U (en) * | 1988-10-17 | 1990-04-23 | ||
| JPH0255733U (en) * | 1988-10-17 | 1990-04-23 |
-
1991
- 1991-09-21 JP JP1991084820U patent/JPH083064Y2/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5531623A (en) * | 1978-08-25 | 1980-03-06 | Toyota Motor Corp | Gear ratio changer of steering device |
| JPS57195219U (en) * | 1981-06-03 | 1982-12-10 | ||
| JPS5987152U (en) * | 1982-11-30 | 1984-06-13 | 三菱電機株式会社 | Frame for semiconductor devices |
| JPH0253634U (en) * | 1988-10-08 | 1990-04-18 | ||
| JPH0255732U (en) * | 1988-10-17 | 1990-04-23 | ||
| JPH0255733U (en) * | 1988-10-17 | 1990-04-23 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH083064Y2 (en) | 1996-01-29 |
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