JPS6119558Y2 - - Google Patents
Info
- Publication number
- JPS6119558Y2 JPS6119558Y2 JP6099178U JP6099178U JPS6119558Y2 JP S6119558 Y2 JPS6119558 Y2 JP S6119558Y2 JP 6099178 U JP6099178 U JP 6099178U JP 6099178 U JP6099178 U JP 6099178U JP S6119558 Y2 JPS6119558 Y2 JP S6119558Y2
- Authority
- JP
- Japan
- Prior art keywords
- cap
- bottomed
- bottomed cap
- ceramic filter
- piezoelectric ceramic
- 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
- 239000000919 ceramic Substances 0.000 claims description 20
- 238000000465 moulding Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 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】
本発明は作成が容易で特性が安定であり、かつ
強度が大きいセラミツクフイルタに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ceramic filter that is easy to produce, has stable characteristics, and has high strength.
セラミツクフイルタは第1図に示す如く、圧電
磁器素体1の両面に電極2を形成し、この電極の
一部で形成される振動子の厚み振動を利用してい
る。従つて、この振動部分3は自由に振動できる
事が必要であり、歪等が加わると所望の特性が得
られない。 As shown in FIG. 1, the ceramic filter has electrodes 2 formed on both sides of a piezoelectric ceramic body 1, and utilizes the thickness vibration of a vibrator formed by a portion of the electrodes. Therefore, it is necessary for this vibrating portion 3 to be able to vibrate freely, and if distortion or the like is applied, desired characteristics cannot be obtained.
従来は、第2図A,Bに示す如く、振動部分に
キヤツプ21を対接せしめて空間を確保し、デイ
ツプ等によつてモールドするか、又はパラフイン
等を振動部分に塗布後、モールドし、加熱してモ
ールド樹脂にパラフインを吸収せしめ空間を確保
していた。しかしながら、これらによるセラミツ
クフイルタはキヤツプを正確に振動部分に対接す
る必要がありあるいは樹脂の硬化後加熱処理が必
要であるなど製造が難かしい上に強度的にも問題
があり、安定かつ多量に均一特性のものが得られ
なかつた。 Conventionally, as shown in FIGS. 2A and 2B, a cap 21 is brought into contact with the vibrating part to secure a space, and molding is performed with dip or the like, or paraffin or the like is applied to the vibrating part and then molded. The paraffin was absorbed into the mold resin by heating to create space. However, these ceramic filters are difficult to manufacture, as the cap must be accurately placed against the vibrating part, and heat treatment is required after the resin has hardened, as well as strength problems. I couldn't get anything special.
本考案はこれら問題点を効果的に解決し、極め
て簡単な構成であるとともに強度的にも優れ安定
かつ多量の製造が可能なセラミツクフイルタを目
的としている。 The object of the present invention is to effectively solve these problems and to provide a ceramic filter which is extremely simple in structure, has excellent strength, and can be manufactured stably and in large quantities.
以下、図面に従つて本考案を説明する。 The present invention will be described below with reference to the drawings.
第3図は本考案の実施例を示す断面図である。
すなわち、圧電磁器素体31の表面に電極32が
設けられ、更にリード端子33が設けられてい
る。前記圧電磁器素体31のリード端子と反対側
の端部側より有底キヤツプ34が挿嵌されてい
る。前記有底キヤツプは樹脂等により作成され、
前記素体の表面とキヤツプ内面との間に微少な間
隙35が形成される如き大きさの収容部分36を
形成しており、内底面までの深さは少なくとも電
極の振動部分を覆うことができる深さとしてい
る。この様な深さとすることによつて、作業者は
振動部分に正確対接する事を全く考慮する必要が
なく、単に内底面に達するまで有底キヤツプを挿
入すればよく、極めて作業性が向上する。有底キ
ヤツプ及び圧電磁器素体はモールド37によつて
一体に成形されているが、例えば射出成型機等に
入れて一体成型する場合、この微少間隙には樹脂
は侵入することがないので自由に振動する空間が
確保されている。この微少間隙は10〜50μ程度が
好都合であり、10〜20μ程度が特に望ましい。 FIG. 3 is a sectional view showing an embodiment of the present invention.
That is, an electrode 32 is provided on the surface of the piezoelectric ceramic body 31, and a lead terminal 33 is further provided. A bottomed cap 34 is inserted from the end of the piezoelectric ceramic body 31 opposite to the lead terminal. The bottomed cap is made of resin or the like,
A housing portion 36 is formed with a size such that a minute gap 35 is formed between the surface of the element body and the inner surface of the cap, and the depth to the inner bottom surface is sufficient to cover at least the vibrating portion of the electrode. It's deep. By setting such a depth, the operator does not have to worry about accurately coming into contact with the vibrating part, and can simply insert the bottomed cap until it reaches the inner bottom surface, which greatly improves work efficiency. . The bottomed cap and the piezoelectric ceramic body are integrally molded by a mold 37, but when they are integrally molded in, for example, an injection molding machine, the resin does not enter into this minute gap, so it can be freely molded. A space for vibration is secured. This minute gap is conveniently about 10 to 50 microns, and particularly preferably about 10 to 20 microns.
第4図は本考案の他の実施例である。ここでは
有底キヤツプ44は凸部48を有する如く形成さ
れており、この様に形成することによつてこの凸
部によつて成型機内の位置が正確に定まりモール
ド47を行なう場合に均一の厚さにモールドで
き、更に強度的にも増加する。 FIG. 4 shows another embodiment of the present invention. Here, the bottomed cap 44 is formed to have a convex portion 48, and by forming it in this way, the position within the molding machine is accurately determined by the convex portion, and when molding 47 is performed, a uniform thickness can be obtained. It can be easily molded and has increased strength.
第5図は本考案の別の実施例であつて有底キヤ
ツプ54の内面は段状に形成されている。この段
部58は傾斜をもつて形成される事が望ましく、
収容部分56の底部側は圧電磁器素体と嵌合する
如き大きさとし、開口部側を微少間隙が形成され
る大きさとしている。この様に形成する事により
前記磁器素体の両面に均等に微少間隙が形成さ
れ、また有底キヤツプがモールド中に動くことが
ないので好ましい結果をもたらす。 FIG. 5 shows another embodiment of the present invention, in which the inner surface of the bottomed cap 54 is stepped. It is desirable that this stepped portion 58 be formed with an inclination.
The bottom side of the accommodating portion 56 is sized to fit with the piezoelectric ceramic body, and the opening side is sized to form a minute gap. By forming in this way, minute gaps are formed evenly on both sides of the porcelain body, and the bottomed cap does not move during molding, which brings about favorable results.
以上述べた如く、本考案は電極が形成された圧
電磁器素体の一端側より有底キヤツプが挿嵌され
ており、前記キヤツプの内面と前記電極の振動部
分間に微少間隙を有し、有底キヤツプ及び圧電磁
器素体は一体にモールドされてなることを特徴と
するセラミツクフイルタであつて、製造が極めて
容易な上に安定かつ多量に生産でき、強度的に優
れ、歩留りが極めて向上するなど優れた考案であ
る。 As described above, in the present invention, a bottomed cap is inserted from one end side of a piezoelectric ceramic body on which an electrode is formed, and a minute gap is provided between the inner surface of the cap and the vibrating part of the electrode. The ceramic filter is characterized in that the bottom cap and the piezoelectric ceramic body are integrally molded, and it is extremely easy to manufacture, can be produced stably and in large quantities, has excellent strength, and has an extremely high yield. This is an excellent idea.
第1図はセラミツクフイルタの電極構成の一例
を示す平面図である。第2図A,Bは従来例のセ
ラミツクフイルタを示す略図である。第3図,第
4図,第5図は本考案実施例のセラミツクフイル
タを示す断面図である。
FIG. 1 is a plan view showing an example of the electrode configuration of a ceramic filter. 2A and 2B are schematic diagrams showing a conventional ceramic filter. 3, 4, and 5 are sectional views showing ceramic filters according to embodiments of the present invention.
Claims (1)
一端縁側より有底キヤツプが前記両側の電極を
覆うように挿嵌されており、前記有底キヤツプ
の内面と前記各電極の振動部分に微少間隙を有
し、前記有底キヤツプ及び圧電磁器素体は一体
にモールドされてなることを特徴とするセラミ
ツクフイルタ。 (2) 前記有底キヤツプの外面が凸状に形成されて
なることを特徴とする実用新案登録請求の範囲
第1項記載のセラミツクフイルタ。 (3) 前記有底キヤツプの内面が段状に形成されて
なることを特徴とする実用新案登録請求の範囲
第1項記載のセラミツクフイルタ。[Claims for Utility Model Registration] (1) A bottomed cap is inserted from one edge side of a plate-shaped piezoelectric ceramic element having electrodes formed on both sides so as to cover the electrodes on both sides, and the bottomed cap A ceramic filter having a minute gap between the inner surface of the cap and the vibrating portion of each electrode, and wherein the bottomed cap and the piezoelectric ceramic body are integrally molded. (2) The ceramic filter according to claim 1, wherein the outer surface of the bottomed cap is formed in a convex shape. (3) The ceramic filter according to claim 1, wherein the inner surface of the bottomed cap is stepped.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6099178U JPS6119558Y2 (en) | 1978-05-06 | 1978-05-06 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6099178U JPS6119558Y2 (en) | 1978-05-06 | 1978-05-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54162746U JPS54162746U (en) | 1979-11-14 |
JPS6119558Y2 true JPS6119558Y2 (en) | 1986-06-12 |
Family
ID=28961951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6099178U Expired JPS6119558Y2 (en) | 1978-05-06 | 1978-05-06 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6119558Y2 (en) |
-
1978
- 1978-05-06 JP JP6099178U patent/JPS6119558Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS54162746U (en) | 1979-11-14 |
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