JPS6115678Y2 - - Google Patents
Info
- Publication number
- JPS6115678Y2 JPS6115678Y2 JP15220879U JP15220879U JPS6115678Y2 JP S6115678 Y2 JPS6115678 Y2 JP S6115678Y2 JP 15220879 U JP15220879 U JP 15220879U JP 15220879 U JP15220879 U JP 15220879U JP S6115678 Y2 JPS6115678 Y2 JP S6115678Y2
- Authority
- JP
- Japan
- Prior art keywords
- connecting rod
- diaphragm
- piezoelectric vibrator
- piezoelectric
- area
- 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
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Description
【考案の詳細な説明】
本考案は圧電振動子を用いた圧電形スピーカに
係り、特に圧電振動子と振動板とを連結する連結
棒に改良を加えて分割共振の発生などを阻止し、
安定した特性のものを得ようとするものである。[Detailed description of the invention] The present invention relates to a piezoelectric speaker using a piezoelectric vibrator, and in particular improves the connecting rod that connects the piezoelectric vibrator and the diaphragm to prevent the occurrence of split resonance.
The aim is to obtain stable characteristics.
従来の圧電形スピーカとしては第１図に示すよ
うに皿状のフレーム１の内部にリング状の突条２
を設け、この突条２に一部を保持させた圧電振動
子３の上面中央に連結棒４を結合し、この連結棒
４の上端に周縁部をフレーム１の周縁部に保持さ
せた振動板５の中央を結合して構成されていた。 As shown in FIG. 1, a conventional piezoelectric speaker has a ring-shaped protrusion 2 inside a dish-shaped frame 1.
A connecting rod 4 is connected to the center of the upper surface of the piezoelectric vibrator 3, which is partially held by the protrusion 2, and the peripheral edge of the connecting rod 4 is held at the upper end of the frame 1. It was constructed by joining the centers of 5.
この構成では、圧電振動子３で発生した振動は
連結棒４を介して振動板５に伝達されるが、振動
板５において、その振動の伝達される部分は連結
棒４の結合された中央部だけとなり、中央部近く
に分割共振が発生しやすく、音圧周波数特性とし
てピークやデイツプの多い不安定なものとなつて
いた。 In this configuration, the vibration generated in the piezoelectric vibrator 3 is transmitted to the diaphragm 5 via the connecting rod 4, but the portion of the diaphragm 5 to which the vibration is transmitted is the central portion where the connecting rod 4 is connected. As a result, split resonance was likely to occur near the center, resulting in an unstable sound pressure frequency characteristic with many peaks and dips.
本考案は以上のような従来の欠点を除去するも
のである。 The present invention eliminates the above-mentioned drawbacks of the prior art.
以下、本考案の実施例を図面第２図、第３図に
より説明する。 Embodiments of the present invention will be described below with reference to FIGS. 2 and 3.
まず、第２図に示す実施例について説明すると
６は合成樹脂などによつて皿状に形成されたフレ
ームで、このフレーム６の内部には突条７が設け
られ、この突条７には圧電振動子８が取付けられ
ている。この圧電振動子８の突条７への結合部は
図示するように圧電振動子８の周縁部であつても
よく、円板状の圧電振動子の場合には振動の節線
に相当する部分であつてもよい。 First, to explain the embodiment shown in FIG. 2, reference numeral 6 denotes a dish-shaped frame made of synthetic resin, etc., and a protrusion 7 is provided inside this frame 6, and this protrusion 7 has a piezoelectric A vibrator 8 is attached. The connecting portion of the piezoelectric vibrator 8 to the protrusion 7 may be the peripheral edge of the piezoelectric vibrator 8 as shown in the figure, or in the case of a disc-shaped piezoelectric vibrator, a portion corresponding to the nodal line of vibration. It may be.
この圧電振動子８の中央上面には連結棒９が結
合され、この連結棒９の上端の結合部１０には周
縁部をフレーム６に固着したドーム状の振動板１
１が結合されている。 A connecting rod 9 is connected to the upper center surface of the piezoelectric vibrator 8, and a dome-shaped diaphragm 1 whose peripheral edge is fixed to the frame 6 is connected to the connecting portion 10 at the upper end of the connecting rod 9.
1 are combined.
上記連結棒９の結合部１０は振動板１１の下面
形状に合致するようにドーム状に形成され、その
結合部１０の面積に連結棒９の断面積より大きく
振動板１１の面積の半分以下の範囲になるように
設定されている。 The connecting portion 10 of the connecting rod 9 is formed into a dome shape to match the shape of the lower surface of the diaphragm 11, and the area of the connecting portion 10 is larger than the cross-sectional area of the connecting rod 9 and less than half the area of the diaphragm 11. It is set to be within the range.
なお、第３図に示す実施例は断面Ｍ字状の振動
板１２を用いており、連結棒９の結合部１０は断
面Ｖ字状に形成されている。 The embodiment shown in FIG. 3 uses a diaphragm 12 with an M-shaped cross section, and the connecting portion 10 of the connecting rod 9 is formed with a V-shaped cross section.
このように連結棒９の振動板１１との結合部１
０として連結棒９の断面積より十分に大きく、振
動板１１の面積の半分以下の面積をもつたものと
しているため、圧電振動子８で発生した振動は連
結棒９を通り結合部１０によつて振動板１１に伝
達されるため、中高域において分割共振の発生し
やすい中央部分が結合部で補強されて分割共振の
発生が阻止でき、振動の伝達も振動板１１の広い
範囲にわたつて行なわれるため、安定したものと
なり、音圧周波数特性においてもピークやデイツ
プの発生もなく、きわめて安定した平坦なものと
することができる。 In this way, the connecting portion 1 of the connecting rod 9 with the diaphragm 11
0 has a cross-sectional area that is sufficiently larger than the cross-sectional area of the connecting rod 9 and less than half the area of the diaphragm 11. Therefore, the vibrations generated in the piezoelectric vibrator 8 pass through the connecting rod 9 and are transmitted to the coupling part 10. Since the vibration is transmitted to the diaphragm 11, the central part where split resonance is likely to occur in the middle and high ranges is reinforced by the joint, preventing split resonance from occurring, and the vibration is also transmitted over a wide range of the diaphragm 11. As a result, the sound pressure frequency characteristics are stable and have no peaks or dips, making them extremely stable and flat.
以上のように本考案の圧電形スピーカは構成さ
れるため分割共振の発生もなく特性の安定化が計
れ、組立ても容易になるなどの利点をもち、実用
的価値の大なるものである。 Since the piezoelectric speaker of the present invention is constructed as described above, it has advantages such as stable characteristics without the occurrence of split resonance and easy assembly, and is of great practical value.
第１図は従来の圧電形スピーカの断面図、第２
図、第３図は本考案の圧電形スピーカの実施例を
示す断面図である。
６……フレーム、７……突条、８……圧電振動
子、９……連結棒、１０……結合部、１１，１２
……振動板。
Figure 1 is a cross-sectional view of a conventional piezoelectric speaker;
3 are sectional views showing an embodiment of the piezoelectric speaker of the present invention. 6...Frame, 7...Protrusion, 8...Piezoelectric vibrator, 9...Connecting rod, 10...Joining portion, 11, 12
...Vibration plate.
Claims (1)
して振動板を結合してなる圧電形スピーカにおい
て、上記連結棒の振動板との結合側に連結棒の断
面より大きく、振動板面積の半分以下の面積をも
ち、かつ振動板の中央部分の形状に合致した形状
の結合部を設けてなる圧電形スピーカ。 In a piezoelectric speaker in which a diaphragm is coupled to a piezoelectric vibrator placed in a frame via a connecting rod, the side of the connecting rod connected to the diaphragm has a cross section larger than the connecting rod and less than half the area of the diaphragm. A piezoelectric speaker which has an area of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15220879U JPS6115678Y2 (en) | 1979-10-31 | 1979-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15220879U JPS6115678Y2 (en) | 1979-10-31 | 1979-10-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5668397U JPS5668397U (en) | 1981-06-06 |
| JPS6115678Y2 true JPS6115678Y2 (en) | 1986-05-15 |
Family
ID=29383121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15220879U Expired JPS6115678Y2 (en) | 1979-10-31 | 1979-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6115678Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58125498U (en) * | 1982-02-17 | 1983-08-26 | 三洋電機株式会社 | piezoelectric speaker |
| JPS5946091U (en) * | 1982-09-16 | 1984-03-27 | オンキヨー株式会社 | speaker |
| JPS5946092U (en) * | 1982-09-16 | 1984-03-27 | オンキヨー株式会社 | speaker |
| JPS5967099U (en) * | 1982-10-27 | 1984-05-07 | オンキヨー株式会社 | speaker |
-
1979
- 1979-10-31 JP JP15220879U patent/JPS6115678Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5668397U (en) | 1981-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6115678Y2 (en) | ||
| JPS5825676Y2 (en) | Piezoelectric electroacoustic transducer | |
| JPS6022716Y2 (en) | piezoelectric speaker | |
| JPS628639Y2 (en) | ||
| JPS5825677Y2 (en) | piezoelectric speaker | |
| JPS5834866Y2 (en) | flat speaker | |
| JPS5853834Y2 (en) | treble speaker | |
| JPS6349996Y2 (en) | ||
| JPS641838Y2 (en) | ||
| JPS603279B2 (en) | piezoelectric horn speaker | |
| JPH0638400U (en) | Piezoelectric handset | |
| JPS596066Y2 (en) | piezoelectric buzzer | |
| JPS5915191Y2 (en) | piezoelectric speaker | |
| JPS5829675Y2 (en) | speaker | |
| JPS6312634Y2 (en) | ||
| JPS6228160Y2 (en) | ||
| JPS6140099U (en) | piezoelectric speaker | |
| JPH062399Y2 (en) | Ultrasonic ceramic microphone | |
| JPS5853827Y2 (en) | speaker | |
| JPS6019440Y2 (en) | ultrasonic ceramic microphone | |
| JPS6024064Y2 (en) | piezoelectric speaker | |
| JPS603278B2 (en) | piezoelectric speaker | |
| JPS6216064Y2 (en) | ||
| JPS5830383Y2 (en) | ultrasonic ceramic microphone | |
| JPS60216699A (en) | Ultrasonic ceramic microphone |