JPH0525240B2 - - Google Patents
Info
- Publication number
- JPH0525240B2 JPH0525240B2 JP59220578A JP22057884A JPH0525240B2 JP H0525240 B2 JPH0525240 B2 JP H0525240B2 JP 59220578 A JP59220578 A JP 59220578A JP 22057884 A JP22057884 A JP 22057884A JP H0525240 B2 JPH0525240 B2 JP H0525240B2
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- resin case
- piezoelectric buzzer
- sounding body
- buzzer element
- 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 - Lifetime
Links
- 239000011347 resin Substances 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 16
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
- G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は金属性振動板に圧電磁器素子を貼り合
わせた圧電ブザーを、電子回路と組み合わせて構
成した各種警報用発音に使用される圧電発音体に
関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a piezoelectric buzzer used for various alarm sounds, which is constructed by combining a piezoelectric ceramic element bonded to a metal diaphragm with an electronic circuit. It's about the body.
（従来例の構成とその問題点）
一般に従来の圧電発音体は第１図に示すよう
に、金属振動板１に接着剤により圧電磁器素子２
を貼り合わせた構造を持つ圧電ブザーエレメント
３の振動の節４を、第２図に示すように弾性を有
する接着剤６を介して樹脂製ケース７に接着する
か、第３図に示すように圧電ブザーエレメント３
の外周部５を接着剤６を介して樹脂製ケース７に
接着した構造を有している。(Structure of conventional example and its problems) In general, as shown in FIG.
The vibration node 4 of the piezoelectric buzzer element 3 is bonded to a resin case 7 via an elastic adhesive 6 as shown in FIG. 2, or as shown in FIG. Piezoelectric buzzer element 3
It has a structure in which the outer circumferential portion 5 of the case 7 is bonded to a resin case 7 via an adhesive 6.
さて、上述した従来の構成の圧電発音体には次
のような欠点がある。 Now, the piezoelectric sounding body having the conventional structure described above has the following drawbacks.
第２図に示す圧電発音体は節４を接着支持して
いるため発音時の圧電ブザーエレメント３の振動
は樹脂製ケース７に伝達しにくいので、発音時の
特性は安定しているが、樹脂製ケース７の共鳴空
間８が小さいため高い共鳴音圧がとれない。 In the piezoelectric sounding body shown in Fig. 2, the nodes 4 are adhesively supported, so the vibration of the piezoelectric buzzer element 3 during sound generation is difficult to transmit to the resin case 7, so the characteristics during sound generation are stable. Since the resonant space 8 of the case 7 is small, high resonant sound pressure cannot be achieved.
一方第３図に示す圧電発音体は外周部５を接着
支持しているため発音時の圧電ブザーエレメント
３の振動が樹脂製ケース７に伝達しやすく樹脂製
ケース７も圧電ブザーエレメント３と一体となつ
て振動しているので、発音時、圧電発音体に機械
的な抑制力が加わると発音が停止する欠点を有す
るが、樹脂製ケース７の共鳴空間８を大きくとれ
るため音圧が高い。 On the other hand, since the piezoelectric sounding body shown in FIG. 3 has its outer peripheral part 5 adhesively supported, the vibration of the piezoelectric buzzer element 3 during sound generation is easily transmitted to the resin case 7, and the resin case 7 is integrated with the piezoelectric buzzer element 3. Since the piezoelectric sounding body vibrates in a curved manner, it has the disadvantage that sounding stops when a mechanical restraining force is applied to the piezoelectric sounding body, but the sound pressure is high because the resonance space 8 of the resin case 7 can be made large.
（発明の目的）
本発明は斯かる事情に鑑みてなされたもので、
安定した特性を持ち、しかも高い音圧を有する圧
電発音体を提供するものである。(Object of the invention) The present invention was made in view of the above circumstances, and
It is an object of the present invention to provide a piezoelectric sounding body having stable characteristics and high sound pressure.
（発明の構成）
この目的を達成するために本発明の圧電発音体
は、樹脂製ケースの圧電ブザーエレメントの接着
面及び外周接触面に突起部を設けたものである。(Structure of the Invention) In order to achieve this object, the piezoelectric sounding body of the present invention is provided with protrusions on the adhesive surface and outer peripheral contact surface of the piezoelectric buzzer element of the resin case.
（実施例の説明）
第４図は、本発明による圧電発音体を構成する
樹脂製ケースの斜視図で、樹脂製ケース７の圧電
ブザーエレメント３が接する面９及び外周部１０
にそれぞれ突起１１，１２を設けている。第５図
は第４図のケースに圧電ブザーエレメントを接着
剤６により外周支持した圧電発音体を示し、かか
る構成にすれば、圧電ブザーエレメント３は樹脂
製ケース７の突起１１，１２に弾性を有する接着
剤６を介して接着されているため、発音時、圧電
ブザーエレメント３の振動が弾性を有する接着剤
６により減衰され樹脂製ケース７が振動しないた
め、安定した特性を持つ。(Description of Embodiments) FIG. 4 is a perspective view of a resin case constituting a piezoelectric sounding element according to the present invention, showing a surface 9 and an outer peripheral portion 10 of the resin case 7 that are in contact with the piezoelectric buzzer element 3.
Protrusions 11 and 12 are provided on the respective sides. FIG. 5 shows a piezoelectric sounding body in which a piezoelectric buzzer element is supported on the outer periphery by an adhesive 6 in the case of FIG. Since the vibration of the piezoelectric buzzer element 3 is attenuated by the elastic adhesive 6 during sound generation and the resin case 7 does not vibrate, it has stable characteristics.
（発明の効果）
以上のように本発明の圧電発音体によれば、発
音時、ケースを介して機械的な抑制力が加わつて
も発音が安定していて、しかも高い音圧を有する
圧電音圧体を提供することができるものである。(Effects of the Invention) As described above, according to the piezoelectric sounding body of the present invention, even when a mechanical suppressing force is applied through the case during sound generation, the sound generation is stable, and piezoelectric sound having high sound pressure It is capable of providing a pressure body.
第１図は圧電ブザーエレメントの上面図、第２
図、第３図は従来の圧電発音体を示す断面図、第
４図は本発明に係る圧電発音体を構成する樹脂製
ケースの斜視図、第５図は圧電発音体の一実施例
を示す断面図である。
１……金属製振動板、２……圧電磁器素子、３
……圧電ブザーエレメント、４……振動の節、５
……外周部、６……弾性を有する接着剤、７……
樹脂製ケース、８……共鳴空間、９……樹脂製ケ
ースの接着面、１０……樹脂製ケースの外周部、
１１，１２……突起。
Figure 1 is a top view of the piezoelectric buzzer element, Figure 2 is a top view of the piezoelectric buzzer element;
Fig. 3 is a sectional view showing a conventional piezoelectric sounding element, Fig. 4 is a perspective view of a resin case constituting the piezoelectric sounding element according to the present invention, and Fig. 5 shows an embodiment of the piezoelectric sounding element. FIG. 1... Metal diaphragm, 2... Piezoelectric ceramic element, 3
...Piezoelectric buzzer element, 4...Vibration node, 5
...Outer peripheral portion, 6...Elastic adhesive, 7...
Resin case, 8... Resonance space, 9... Adhesive surface of resin case, 10... Outer periphery of resin case,
11, 12...protrusions.
Claims (1)
合わせてなる圧電ブザーエレメントの外周を弾性
を有する接着剤により樹脂製ケースに接着する構
成とし、かつ上記樹脂製ケースの上記圧電ブザー
エレメントの接着面及び外周接触面に突起部を設
けてなる圧電発音体。1 The outer periphery of a piezoelectric buzzer element made by bonding a piezoelectric ceramic element to a metal diaphragm with an adhesive is bonded to a resin case using an elastic adhesive, and the piezoelectric buzzer element is bonded to the resin case. A piezoelectric sounding body with protrusions on the surface and outer contact surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59220578A JPS6199500A (en) | 1984-10-22 | 1984-10-22 | piezoelectric sounding body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59220578A JPS6199500A (en) | 1984-10-22 | 1984-10-22 | piezoelectric sounding body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6199500A JPS6199500A (en) | 1986-05-17 |
| JPH0525240B2 true JPH0525240B2 (en) | 1993-04-12 |
Family
ID=16753172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59220578A Granted JPS6199500A (en) | 1984-10-22 | 1984-10-22 | piezoelectric sounding body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6199500A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3362997B2 (en) * | 1995-06-19 | 2003-01-07 | 太陽誘電株式会社 | Piezo acoustic device |
-
1984
- 1984-10-22 JP JP59220578A patent/JPS6199500A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6199500A (en) | 1986-05-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |