JPH0453115Y2 - - Google Patents
Info
- Publication number
- JPH0453115Y2 JPH0453115Y2 JP1985085281U JP8528185U JPH0453115Y2 JP H0453115 Y2 JPH0453115 Y2 JP H0453115Y2 JP 1985085281 U JP1985085281 U JP 1985085281U JP 8528185 U JP8528185 U JP 8528185U JP H0453115 Y2 JPH0453115 Y2 JP H0453115Y2
- Authority
- JP
- Japan
- Prior art keywords
- printed circuit
- circuit board
- piezoelectric
- annular conductor
- front cover
- 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
Landscapes
- Telephone Set Structure (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、導電性を有する振動板にセラミツク
圧電素子を固着して構成した振動体を使用した圧
電形音響変換器に関し、さらに詳しくはフロント
カバーとプリント基板との接続構造を改良したも
のである。[Detailed description of the invention] [Field of industrial application] The present invention relates to a piezoelectric acoustic transducer that uses a vibrating body constructed by fixing a ceramic piezoelectric element to a conductive diaphragm. This is an improved connection structure between the cover and the printed circuit board.
〔従来の技術〕
圧電形音響変換器は、例えば電話機のハンドセ
ツトに組込まれる圧電形送受話器として利用され
ている。従来の圧電形受話器の概略を第４図およ
び第５図によつて説明すれば、１はアルミ製のフ
ロントカバー、２は黄銅板等をフランジ付の浅皿
状に折曲してなる振動板、３はセラミツク等の圧
電素子、４はプラスチツク等の絶縁材を前記振動
板２と同径に打抜き形成してなるプリント基板、
５および６は端子である。圧電素子３は振動板２
の内面に固着され、これらによつて振動体を構成
するとともに、この振動体はプリント基板４の未
印刷面側に積層状態で組付けられる。プリント基
板４は、第５図に示すように、その一側面の外周
に環状の導体部７を印刷配線するとともにこの環
状導体部から半径方向に延びる第１の端子導体部
８と、これと対向する独立の第２の端子導体部９
とが印刷配線されている。各端子導体部８，９に
は前記端子５，６がそれぞれ挿入される矩形の端
子挿入孔１０，１１が設けられており、さらに第
２端子導体部９には前記圧電素子３のリード線１
２が挿入されるリード線案内孔１４が設けられて
いる。なお、各端子５，６およびリード線１２
は、それぞれその導体部に半田付け固定されてい
る。これら構成諸部材は、フロントカバー１に包
み込まれるように組付けられる。すなわち、積層
状態に組付けた振動体とプリント基板４に対して
フロントカバー素材を重合わせ、しかる後カシメ
治具によつて周縁部を断面半円弧状に折曲して組
立てるのである。しかして、フロントカバー１
は、その第１の折曲部P1において振動板２とグ
ランド接続されるとともに外周縁近傍の第２の折
曲部P2において前記環状導体部７とグランド接
続される。以上のように構成された圧電形受話器
は、端子５，６に電気的信号が印加されることに
よつて振動体が振動し、発音されるのである。[Prior Art] Piezoelectric acoustic transducers are used, for example, as piezoelectric handsets built into telephone handsets. The outline of a conventional piezoelectric handset is explained with reference to FIGS. 4 and 5. 1 is an aluminum front cover, 2 is a diaphragm made by bending a brass plate or the like into a shallow dish shape with a flange. , 3 is a piezoelectric element made of ceramic or the like; 4 is a printed circuit board formed by punching an insulating material such as plastic to the same diameter as the diaphragm 2;
5 and 6 are terminals. Piezoelectric element 3 is diaphragm 2
These components constitute a vibrating body, and this vibrating body is assembled in a stacked manner on the unprinted surface side of the printed circuit board 4. As shown in FIG. 5, the printed circuit board 4 has an annular conductor section 7 printed and wired on the outer periphery of one side thereof, and a first terminal conductor section 8 extending radially from the annular conductor section, and a first terminal conductor section 8 facing thereto. An independent second terminal conductor section 9
are printed and wired. Each terminal conductor part 8, 9 is provided with a rectangular terminal insertion hole 10, 11 into which the terminal 5, 6 is inserted, respectively, and the second terminal conductor part 9 is provided with a lead wire 1 of the piezoelectric element 3.
A lead wire guide hole 14 into which the lead wire 2 is inserted is provided. In addition, each terminal 5, 6 and lead wire 12
are soldered and fixed to their respective conductor parts. These constituent members are assembled so as to be wrapped in the front cover 1. That is, the front cover material is overlapped with the vibrating body and the printed circuit board 4 assembled in a laminated state, and then the peripheral portion is bent into a semicircular cross-sectional shape using a crimping jig to assemble. However, front cover 1
is grounded to the diaphragm 2 at its first bent portion P 1 and grounded to the annular conductor portion 7 at its second bent portion P 2 near the outer periphery. In the piezoelectric handset constructed as described above, when electrical signals are applied to the terminals 5 and 6, the vibrating body vibrates and produces sound.
ところで、上述した従来の圧電形受話器によれ
ば、フロントカバー１の材料特性から、カシメ作
業時にカバーのスプリングバツク管理あるいはカ
シメ圧力、ストローク等の管理が必要であり、作
業能率が極めて悪く、かつ接触不良が発生してい
た。
By the way, according to the conventional piezoelectric handset described above, due to the material characteristics of the front cover 1, it is necessary to manage the spring back of the cover or the crimping pressure, stroke, etc. during crimping work, resulting in extremely low work efficiency and contact failure. A defect had occurred.
このため、カシメ作業後に、各グランド接続部
に導電塗料するといつた追加工が必要となり、さ
らに、プリント基板４の外周縁には、パターン印
刷のズレによつて絶縁部１３も生じ、外周縁とカ
バー内面との接触部P3における接続も期待でき
ずますます加工能率が悪くなるといつた問題点が
あつた。 Therefore, after the caulking work, additional work such as applying conductive paint to each ground connection part is required.Furthermore, an insulating part 13 is also formed on the outer periphery of the printed circuit board 4 due to misalignment of pattern printing, and the outer periphery There was a problem in that the connection at the contact point P3 with the inner surface of the cover could not be expected, and the machining efficiency became worse.
本考案は、圧電素子が固着された振動板からな
る圧電振動体と、この圧電振動体を積層状態で取
付け外周に環状導体部が形成されたプリント基板
と、前記環状導体部と振動板とを厚み方向からそ
れぞれ挟持しするようにしてグランド接続して前
記プリント基板と圧電振動体を含むフロントカバ
ーとで構成された圧電形音響変換器であつて、前
記プリント基板の外形よりも大径の環状導体部が
形成された基板素材を非回路形成面側からプレス
打抜きして前記環状導体部をプリント基板外側周
縁から側方へ延在させて前記フロントカバーの内
面に接触させてこの環状導体部を前記フロントカ
バーとグランド接続させたものである。
The present invention consists of a piezoelectric vibrating body consisting of a diaphragm to which a piezoelectric element is fixed, a printed circuit board on which the piezoelectric vibrating body is mounted in a laminated state and an annular conductor portion formed on the outer periphery, and the annular conductor portion and the diaphragm. A piezoelectric acoustic transducer is constructed of the printed circuit board and a front cover including a piezoelectric vibrating body, which are connected to the ground so as to be sandwiched from the thickness direction, and have an annular shape larger in diameter than the outer diameter of the printed circuit board. The board material on which the conductor portion is formed is press punched from the non-circuit forming side, and the annular conductor portion is extended laterally from the outer periphery of the printed circuit board and brought into contact with the inner surface of the front cover. It is grounded to the front cover.
以上のように構成したので、フロントカバーと
プリント基板との電気的接続は、カバー外周縁近
傍の第２の折曲部と環状導体部とのグランド接続
ばかりではなく、カバー内面と外側周縁導体部と
のグランド接続も行なわれる。
With the above configuration, the electrical connection between the front cover and the printed circuit board is not limited to the ground connection between the second bent portion near the outer periphery of the cover and the annular conductor, but also between the inner surface of the cover and the outer periphery conductor. A ground connection is also made.
以下、本考案について図面に示した実施例によ
つて詳細に説明する。
Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.
実施例は、圧電形受話器を示し、その基本構成
は上述した従来のものと同様であるため同一部品
は同一符号を付し、その説明は省略する。本考案
は、プリント基板２０の構造に特徴を有してお
り、その詳細を第２図および第３図によつて説明
すれば、第３図はプラスチツク等の絶縁材からな
るプリント基板３０を示し、この素材上には個別
のプリント基板２０Ａ，２０Ｂ，……に対応して
それぞれ所定の導体パターン、すなわち環状導体
部２１、第１端子導体部２２、第２端子導体部２
３が印刷配線されている。しかして、このプリン
ト基板素材３０からプレス打抜きによつて第２図
に示す個別のプリント基板２０が形成される。こ
こで注目すべきことは、基板２０の外径Ｒに対し
て環状導体部２１の外径Ｓがやや大に印刷されて
いることである、そして、プリント基板素材３０
をプレス打抜きする際、この素材の非印刷面側か
らパンチを行う。プレス加工の際のダレーカエリ
現象によつて環状導体部２１の外周部分が基板外
側周縁まで張出し、この外側周縁にも導体部２４
が形成されるのである。なお、プレス加工の際各
導体端子部２２，２３には端子挿入孔２５，２６
およびリード線案内孔２７が形成される。しかし
て、プリント基板２０に端子５，６を半田付し、
さらに振動体を積層して、この組立体とフロント
カバー１とのカシメ組立てを行うことによつて、
第１図に示すように、フロントカバー１はその第
１の折曲部P1において振動板２とグランド接続
され、かつ第２の折曲部P2においてプリント基
板２０の環状導体部２１とグランド接続されると
ともにその内面の一部において前記外側周縁導体
部２４ともグランド接続が行なわれるのである。 The embodiment shows a piezoelectric handset whose basic configuration is the same as that of the above-mentioned conventional handset, so the same parts are given the same reference numerals and the explanation thereof will be omitted. The present invention is characterized by the structure of the printed circuit board 20, and its details will be explained with reference to FIGS. 2 and 3. FIG. 3 shows a printed circuit board 30 made of an insulating material such as plastic. , on this material are predetermined conductor patterns corresponding to the individual printed circuit boards 20A, 20B, .
3 is printed and wired. Then, the individual printed circuit boards 20 shown in FIG. 2 are formed from this printed circuit board material 30 by press punching. What should be noted here is that the outer diameter S of the annular conductor portion 21 is printed slightly larger than the outer diameter R of the printed circuit board material 30.
When press punching, punch is performed from the non-printing side of the material. Due to the curvature phenomenon during press working, the outer peripheral portion of the annular conductor portion 21 extends to the outer peripheral edge of the board, and the conductor portion 24 also extends to this outer peripheral edge.
is formed. Note that during press working, terminal insertion holes 25 and 26 are formed in each conductor terminal portion 22 and 23.
And a lead wire guide hole 27 is formed. Then, the terminals 5 and 6 are soldered to the printed circuit board 20,
Furthermore, by laminating the vibrating body and assembling this assembly and the front cover 1 by caulking,
As shown in FIG. 1, the front cover 1 is grounded to the diaphragm 2 at its first bent portion P1 , and connected to the annular conductor portion 21 of the printed circuit board 20 at its second bent portion P2. At the same time, a part of the inner surface thereof is also grounded to the outer peripheral conductor portion 24.
なお、上記実施例では、外側周縁導体部２４を
プレス加工のダレーカエリ現象を利用して形成す
るようにしたが、その他の方法によつて形成して
も良いことは勿論である。さらに、本考案は、電
話機の圧電受話器だけではなく圧電送話器あるい
は他の圧電音響変換器にも実施されるものであ
る。 In the above embodiment, the outer circumferential edge conductor portion 24 is formed by utilizing the sag burr phenomenon of press working, but it goes without saying that it may be formed by other methods. Moreover, the invention may be implemented not only in piezoelectric telephone handsets, but also in piezoelectric transmitters or other piezoelectric acoustic transducers.
以上詳細に説明してように、本考案によれば、
フロントカバーとプリント基板とのグランド接続
は２箇所において行なわれるものであり、導電塗
料を塗布するといた追加工を施こすことなく確実
な接続が得られ、またその構造、作業も従来のも
のとほとんど変わりがなく、より信頼性の高い安
価な製品を得ることができ、実用上の効果は極め
て大である。
As explained in detail above, according to the present invention,
The ground connection between the front cover and the printed circuit board is made in two places, and a reliable connection can be obtained without any additional work such as applying conductive paint, and the structure and work are almost the same as conventional ones. It is possible to obtain a more reliable and cheaper product without any change, and the practical effect is extremely large.
第１図は本考案の一実施例として示す受話器の
要部拡大断面図、第２図はプリント基板の平面
図、第３図はプリント基板素材の平面図、第４図
は従来の受話器の全体断面図、第５図は同プリン
ト基板の平面図である。
１……フロントカバー、２……振動板、３……
圧電素子、４……プリント基板、５，６……端
子、７……環状導体部、８，９……端子導体部、
２０……プリント基板、２１……環状導体部、２
２，２３……端子導体部、２４……外周側縁導体
部、３０……プリント基板素材。
Fig. 1 is an enlarged cross-sectional view of the main parts of a handset as an embodiment of the present invention, Fig. 2 is a plan view of the printed circuit board, Fig. 3 is a plan view of the printed circuit board material, and Fig. 4 is the entire conventional handset. The sectional view and FIG. 5 are plan views of the same printed circuit board. 1...Front cover, 2...Diaphragm, 3...
Piezoelectric element, 4... Printed circuit board, 5, 6... Terminal, 7... Annular conductor part, 8, 9... Terminal conductor part,
20... Printed circuit board, 21... Annular conductor portion, 2
2, 23...Terminal conductor portion, 24...Outer edge conductor portion, 30...Printed circuit board material.
Claims (1)
体と、この圧電振動体を積層状態で取付け外周に
環状導体部が形成されたプリント基板と、前記環
状導体部と振動板とを厚み方向からそれぞれ挟持
しするようにしてグランド接続して前記プリント
基板と圧電振動体を包むフロントカバーとで構成
された圧電形音響変換器において、前記プリント
基板の外形よりも大径の環状導体部が形成された
基板素材を非回路形成面側からプレス打抜きして
前記環状導体部をプリント基板外側周縁から側方
へ延在させて前記フロントカバーの内面に接触さ
せてこの環状導体部を前記フロントカバーとグラ
ンド接続させたことを特徴とする圧電形音響変換
器。 A piezoelectric vibrating body consisting of a diaphragm to which a piezoelectric element is fixed, a printed circuit board on which the piezoelectric vibrating body is mounted in a laminated state and an annular conductor portion formed on the outer periphery, and the annular conductor portion and the diaphragm from the thickness direction. In a piezoelectric acoustic transducer configured with a front cover that wraps the printed circuit board and a piezoelectric vibrating body, the printed circuit board is connected to the ground in a pinching manner, and an annular conductor portion having a larger diameter than the outer diameter of the printed circuit board is formed. The board material is press punched from the non-circuit forming side, and the annular conductor part is extended laterally from the outer periphery of the printed circuit board and brought into contact with the inner surface of the front cover, and the annular conductor part is grounded with the front cover. A piezoelectric acoustic transducer characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985085281U JPH0453115Y2 (en) | 1985-06-07 | 1985-06-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985085281U JPH0453115Y2 (en) | 1985-06-07 | 1985-06-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61202999U JPS61202999U (en) | 1986-12-20 |
| JPH0453115Y2 true JPH0453115Y2 (en) | 1992-12-14 |
Family
ID=30635536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985085281U Expired JPH0453115Y2 (en) | 1985-06-07 | 1985-06-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0453115Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0636638B2 (en) * | 1987-11-09 | 1994-05-11 | 株式会社村田製作所 | Piezoelectric handset |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5846630Y2 (en) * | 1979-03-31 | 1983-10-24 | パイオニア株式会社 | electro-acoustic transducer |
| JPS6014600A (en) * | 1983-07-06 | 1985-01-25 | Fujitsu Ltd | Transmitter and receiver |
-
1985
- 1985-06-07 JP JP1985085281U patent/JPH0453115Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61202999U (en) | 1986-12-20 |
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