JPH07213997A - Piezoelectric vibrator - Google Patents
Piezoelectric vibratorInfo
- Publication number
- JPH07213997A JPH07213997A JP6037838A JP3783894A JPH07213997A JP H07213997 A JPH07213997 A JP H07213997A JP 6037838 A JP6037838 A JP 6037838A JP 3783894 A JP3783894 A JP 3783894A JP H07213997 A JPH07213997 A JP H07213997A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- vibration
- piezoelectric vibrator
- case
- vibrating device
- 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.)
- Pending
Links
- 239000002184 metal Substances 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 229920005989 resin Polymers 0.000 abstract description 14
- 239000011347 resin Substances 0.000 abstract description 14
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、圧電振動子を用い
て、低周波の振動を発生させ、携帯電話やポケットベル
等の携帯用通信機器の報知装置として用いられる圧電振
動装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piezoelectric vibrating device which uses a piezoelectric vibrator to generate low-frequency vibration and is used as a notification device for portable communication equipment such as mobile phones and pagers.
【０００２】[0002]
【従来の技術】従来の圧電振動装置は、例えば特開平４
−２９２０２５号公報に開示されているように、積層型
の圧電素子を用い、この圧電素子の一方の面に中継ぎ部
材を接続させ、この中継ぎ部材介して振動板に接続し振
動を発生させるものであった。そして、この圧電素子
を、可聴域より低い周波数で振動させて、振動板に中継
ぎ部材を介して振動を伝達し、使用者に報知しているも
のである。2. Description of the Related Art A conventional piezoelectric vibration device is disclosed in, for example, Japanese Patent Laid-Open No.
As disclosed in Japanese Patent No. 292025, a laminated piezoelectric element is used, a connecting member is connected to one surface of the piezoelectric element, and a vibration plate is connected through the connecting member to generate vibration. there were. Then, the piezoelectric element is vibrated at a frequency lower than the audible range, and the vibration is transmitted to the diaphragm through the relay member to notify the user.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の技術の場
合、積層形の圧電素子を用いているため構造が複雑とな
り、薄型化することができないものであった。また、圧
電素子の一方の面に中継ぎ部材を接続して、振動板に振
動を伝達しているものであり、効率的に振動を外部に伝
えることができないものであった。In the case of the above-mentioned conventional technique, since the laminated piezoelectric element is used, the structure becomes complicated and it is impossible to reduce the thickness. Further, since a relay member is connected to one surface of the piezoelectric element to transmit the vibration to the diaphragm, the vibration cannot be efficiently transmitted to the outside.
【０００４】この発明は、上記従来の技術に鑑みて成さ
れたもので、簡単な構成で、薄型化が容易であり、強い
振動が得られ、振動の伝達効率も良い圧電振動装置を提
供することを目的とする。The present invention has been made in view of the above-mentioned conventional technique, and provides a piezoelectric vibrating device having a simple structure, easy to be thinned, strong vibration can be obtained, and vibration transmission efficiency is good. The purpose is to
【０００５】[0005]
【課題を解決するための手段】この発明は、平板状の振
動板とその表面に貼り付けられた圧電体とからなるバイ
モルフ素子またはユニモルフ素子の圧電振動子と、この
圧電振動子を収容した樹脂または金属製のケースと、こ
の圧電振動子に一端が接続して取り付けられ上記ケース
に他端が接続した支柱または支持枠等の振動伝達部材と
を設けた圧電振動装置である。上記振動伝達部材は、上
記圧電振動子の周縁部を保持し、端部が上記ケースに接
続した支持枠である。さらに、上記圧電振動子に、樹脂
や金属等の重りまたは金属バネ等の弾性部材からなる振
動逓減部材を取り付けたものである。According to the present invention, there is provided a piezoelectric vibrator of a bimorph element or a unimorph element, which is composed of a flat diaphragm and a piezoelectric body attached to the surface thereof, and a resin containing the piezoelectric vibrator. Alternatively, it is a piezoelectric vibrating device provided with a metal case and a vibration transmitting member such as a support or a support frame which is attached to the piezoelectric vibrator by connecting one end thereof and connected to the case at the other end. The vibration transmission member is a support frame that holds the peripheral portion of the piezoelectric vibrator and has an end connected to the case. Further, a weight reduction member made of resin or metal or a vibration reduction member made of an elastic member such as a metal spring is attached to the piezoelectric vibrator.
【０００６】またこの発明は、上記圧電振動子の中央部
に上記振動伝達部材を設け、上記圧電振動子の周縁部に
重りを兼ねた支持枠を取り付けた圧電振動装置である。
さらに、上記圧電振動子の中央部は、支柱と弾性部材、
支柱と支柱、または弾性部材と弾性部材とにより挟持さ
れているものである。The present invention is also a piezoelectric vibrating device in which the vibration transmitting member is provided in the center of the piezoelectric vibrator, and a supporting frame which also serves as a weight is attached to the peripheral edge of the piezoelectric vibrator.
Further, the central portion of the piezoelectric vibrator includes a support and an elastic member,
It is sandwiched between columns and columns, or between elastic members and elastic members.
【０００７】[0007]
【作用】この発明の圧電振動装置は、振動板に圧電体が
貼り付けられた圧電振動子に、支柱や支持枠または弾性
部材を介して、振動がケースに伝達されるようにしてい
るので、圧電振動子の振動が効率よくしかも確実にケー
スに伝達される。また、弾性部材や重りからなる振動逓
減部材により、所望の低周波の振動に圧電振動子の振動
が変換されるとともに振幅が増加されて、より強い振動
がケースに伝達されるものである。In the piezoelectric vibrating device according to the present invention, the vibration is transmitted to the case by the piezoelectric vibrator in which the piezoelectric body is attached to the vibrating plate through the support column, the supporting frame or the elastic member. The vibration of the piezoelectric vibrator is efficiently and reliably transmitted to the case. In addition, the vibration reducing member including an elastic member and a weight converts the vibration of the piezoelectric vibrator into a desired low-frequency vibration and increases the amplitude, so that stronger vibration is transmitted to the case.
【０００８】[0008]
【実施例】以下この発明の実施例について図面に基づい
て説明する。図１〜図７はこの発明の第一実施例を示す
もので、この実施例の圧電振動装置１０は、図１に示す
ように、金属製の振動板１２の表裏面に圧電セラミック
ス等の圧電体１４が貼り付けられたバイモルフ素子であ
る圧電振動子１５を備えたものである。各圧電体１４の
外側の面には、図示しない一方の電極が形成され、他方
の電極は、振動板１２が兼ねている。圧電振動子１５の
周縁部には、樹脂製の支持枠１６が全周に渡って設けら
れ、この支持枠１６がケース１８に固定されている。Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show a first embodiment of the present invention. As shown in FIG. 1, a piezoelectric vibrating device 10 of this embodiment has a piezoelectric vibrating plate 12 made of a piezoelectric material such as piezoelectric ceramics on the front and back surfaces thereof. The piezoelectric vibrator 15 is a bimorph element to which the body 14 is attached. One electrode (not shown) is formed on the outer surface of each piezoelectric body 14, and the vibrating plate 12 also serves as the other electrode. A support frame 16 made of resin is provided around the entire periphery of the piezoelectric vibrator 15, and the support frame 16 is fixed to the case 18.
【０００９】この圧電振動装置には、図２に示すよう
に、圧電振動子１５の中央部に樹脂等の絶縁体または金
属の薄板からなる重り２０がエポキシ樹脂等の接着剤に
より固定されている。この重り２０は、圧電振動子１５
の単体での振動数を、可聴域より低い所望の低周波、例
えば１００〜２００Ｈｚに逓減するとともに、振動の振
幅を増幅するものである。この重り２０は、図３に示す
ように、樹脂等のスペーサ２２を介して圧電振動子１５
の圧電体１４に直接固定しても良い。また、図４に示す
ように、圧電振動子１５の両面の圧電体１４に、スペー
サ２２を介して重り２０を取り付けても良い。さらに
は、図５に示すように、スペーサ２２を介さずに、圧電
振動子１５の両面の圧電体１４に、重り２０を直接固定
しても良く、図６、図７に示すように、スペーサ２２と
一体に形成された樹脂等の重り２０を、圧電振動子１５
の両面または片面に固定しても良い。In this piezoelectric vibrating device, as shown in FIG. 2, a weight 20 made of an insulating material such as resin or a thin metal plate is fixed to the central portion of the piezoelectric vibrator 15 with an adhesive such as epoxy resin. . The weight 20 is the piezoelectric vibrator 15
The frequency of the simple substance is gradually reduced to a desired low frequency lower than the audible range, for example, 100 to 200 Hz, and the amplitude of the vibration is amplified. As shown in FIG. 3, the weight 20 is provided with a piezoelectric vibrator 15 via a spacer 22 made of resin or the like.
It may be directly fixed to the piezoelectric body 14. Further, as shown in FIG. 4, weights 20 may be attached to the piezoelectric bodies 14 on both surfaces of the piezoelectric vibrator 15 via spacers 22. Further, as shown in FIG. 5, the weight 20 may be directly fixed to the piezoelectric bodies 14 on both surfaces of the piezoelectric vibrator 15 without the spacer 22, and as shown in FIGS. The weight 20 such as a resin integrally formed with the piezoelectric vibrator 15
It may be fixed on both sides or one side.
【００１０】この実施例の圧電振動装置によれば、バイ
モルフ素子からなる圧電振動子１５を支持部材１６によ
り支持するとともに、圧電振動子１５の中央部に重り２
０を取り付けたので、圧電振動子１５の振動が直接ケー
ス１８に効率的に伝達され、しかもきわめて薄い構造に
することができる。また、圧電振動子１５の中央部に重
りを取り付けたことにより、所望の周波数に容易に振動
数を落とすとともに、振幅を増大させることができ、強
い振動で使用者に確実に振動を伝達することができる。
また、図５に示すように、重り２０を直接圧電振動子１
５に固定することにより、さらに薄型化することができ
る。According to the piezoelectric vibration device of this embodiment, the piezoelectric vibrator 15 composed of the bimorph element is supported by the supporting member 16, and the weight 2 is provided at the center of the piezoelectric vibrator 15.
Since 0 is attached, the vibration of the piezoelectric vibrator 15 is efficiently transmitted directly to the case 18, and the structure can be made extremely thin. Also, by attaching a weight to the central portion of the piezoelectric vibrator 15, it is possible to easily reduce the frequency to a desired frequency and increase the amplitude, and to reliably transmit the vibration to the user with strong vibration. You can
Further, as shown in FIG. 5, the weight 20 is directly attached to the piezoelectric vibrator 1.
By fixing to 5, it is possible to further reduce the thickness.
【００１１】次のこの発明の第二実施例の圧電振動装置
について図８、図９を基にして説明する。ここで上述の
実施例と同様の部材は同一符号を付して説明を省略す
る。この実施例の圧電振動装置は、圧電振動子１５の中
央部に、ケース１８に一端が支持された樹脂等の支柱２
４を接続させたものである。図８に示す圧電振動装置１
０は、圧電振動子１５の両面に、支柱２４を接続させ、
支柱２４の他端部は、各々ケース１８に接続したもので
ある。そして、圧電振動子１５の周縁部の支持枠１６が
振動板１２に取り付けられた状態で、中空に位置し、重
り２０として周波数逓減及び振幅増大機能を果たしてい
るものである。また、図９に示すものは、支柱２４を圧
電振動子１５の一方の側に設け、他方の側では、支持枠
１６がケース１８に接続しているものである。Next, a piezoelectric vibrating device according to a second embodiment of the present invention will be described with reference to FIGS. 8 and 9. Here, the same members as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted. In the piezoelectric vibrating device according to this embodiment, a pillar 2 made of resin or the like, one end of which is supported by the case 18, is provided at the center of the piezoelectric vibrator 15.
4 is connected. Piezoelectric vibration device 1 shown in FIG.
0 connects the support columns 24 to both sides of the piezoelectric vibrator 15,
The other ends of the columns 24 are connected to the case 18, respectively. Further, the support frame 16 at the peripheral portion of the piezoelectric vibrator 15 is positioned in the hollow state in a state of being attached to the vibrating plate 12, and functions as the weight 20 to perform the function of gradually decreasing the frequency and increasing the amplitude. Further, as shown in FIG. 9, the column 24 is provided on one side of the piezoelectric vibrator 15, and the support frame 16 is connected to the case 18 on the other side.
【００１２】この実施例の圧電振動装置は、圧電振動子
１５の中央部に支柱２４を取り付けたので、振動が確実
に各効率よくケース１８に伝達されるものである。さら
に、図８に示すように、支柱２４で圧電振動子１５を挟
持して、保持することにより、ケース１８の両面を同様
に振動させることができる。また、図９に示すように、
圧電振動子１５の一方に支柱２４を取り付けることによ
り、ケース１８の一方を効果的に振動させることができ
る。In the piezoelectric vibrating device of this embodiment, since the column 24 is attached to the central portion of the piezoelectric vibrator 15, the vibration is surely and efficiently transmitted to the case 18. Further, as shown in FIG. 8, by holding and holding the piezoelectric vibrator 15 between the columns 24, both sides of the case 18 can be similarly vibrated. Also, as shown in FIG.
By attaching the support column 24 to one side of the piezoelectric vibrator 15, one side of the case 18 can be effectively vibrated.
【００１３】次のこの発明の第三実施例の圧電振動装置
について図１０、図１１、図１２を基にして説明する。
ここで上述の実施例と同様の部材は同一符号を付して説
明を省略する。この実施例の圧電振動装置は、図１０に
示すように、圧電振動子１５の中央部を弾性部材として
金属製の板バネやコイルバネ等の金属バネ２６により支
持したものである。金属バネ２６の他端は、ケース１８
に接続され、圧電振動子１５の周縁部に設けられた支持
枠１６は、支持部材として、他方の側のケース１８に接
続しているものである。また、図１１に示すように、ケ
ース１８に一端が支持された樹脂等の支柱２４と、金属
バネ２６とにより圧電振動子１５を挟持して保持しても
良く、この場合、支持枠１６は重り２０として機能す
る。さらに、図１２に示すように、圧電振動子１５を一
対の金属バネ２６により挟持して保持しても良い。この
場合も、支持枠１６は重り２０として機能している。A piezoelectric vibrating device according to a third embodiment of the present invention will be described below with reference to FIGS. 10, 11 and 12.
Here, the same members as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted. In the piezoelectric vibration device of this embodiment, as shown in FIG. 10, the central portion of the piezoelectric vibrator 15 is supported as an elastic member by a metal spring 26 such as a metal leaf spring or a coil spring. The other end of the metal spring 26 is connected to the case 18
And the support frame 16 provided on the peripheral portion of the piezoelectric vibrator 15 is connected to the case 18 on the other side as a support member. Further, as shown in FIG. 11, the piezoelectric vibrator 15 may be held by being sandwiched between a pillar 24 made of resin or the like, one end of which is supported by the case 18, and a metal spring 26. In this case, the support frame 16 is It functions as a weight 20. Further, as shown in FIG. 12, the piezoelectric vibrator 15 may be held by being sandwiched by a pair of metal springs 26. In this case as well, the support frame 16 functions as the weight 20.
【００１４】この実施例の圧電振動装置は、圧電振動子
１５の中央部に金属バネ２６を取り付けたので、振動が
効率よく逓減されるとともに、振幅が効果的に増大し、
ケース１８に直接効率よく強い振動が伝達される。さら
に、図１０に示すように、圧電振動子１５の一方に金属
バネ２６を取り付けることにより、ケース１８の一方を
効果的に振動さることができ、また、図１１に示すよう
に、支柱２４で圧電振動子１５の一方の側を保持し、他
方を金属バネ２６により支持することにより、ケース１
８の金属バネ２６に接続した方の振動を少なくすること
ができる。また図１２に示すように、両側を金属バネ２
６により支持した場合、両面を同様に振動させることが
できる。In the piezoelectric vibration device of this embodiment, since the metal spring 26 is attached to the central portion of the piezoelectric vibrator 15, the vibration is efficiently reduced and the amplitude is effectively increased.
Strong vibrations are efficiently and directly transmitted to the case 18. Further, as shown in FIG. 10, by attaching a metal spring 26 to one side of the piezoelectric vibrator 15, one side of the case 18 can be effectively vibrated, and as shown in FIG. By holding one side of the piezoelectric vibrator 15 and supporting the other side by the metal spring 26, the case 1
The vibration of the one connected to the metal spring 26 of No. 8 can be reduced. Also, as shown in FIG. 12, metal springs 2 are provided on both sides.
When supported by 6, both sides can be vibrated similarly.
【００１５】次のこの発明の第四実施例の圧電振動装置
について図１３、図１４を基にして説明する。ここで上
述の実施例と同様の部材は同一符号を付して説明を省略
する。この実施例の圧電振動装置は、圧電振動子１５の
中央部の一方の側を支持し、圧電振動子１５を中空に位
置させ、支持枠１６を重り２０として機能させたもので
ある。図１３に示すものは、支持部材及び振動伝達部材
としての支柱２４により、圧電振動子１５を支持したも
のである。また、図１４に示すものは、支持部材及び振
動伝達部材として及び弾性部材として、金属製の板バネ
やコイルバネ等の金属バネ２６により、圧電振動子１５
を支持したものである。A piezoelectric vibrating device according to a fourth embodiment of the present invention will be described below with reference to FIGS. 13 and 14. Here, the same members as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted. The piezoelectric vibrating device of this embodiment supports one side of the central portion of the piezoelectric vibrator 15, positions the piezoelectric vibrator 15 in the hollow, and causes the support frame 16 to function as a weight 20. In FIG. 13, the piezoelectric vibrator 15 is supported by the support columns 24 serving as a supporting member and a vibration transmitting member. In addition, as shown in FIG. 14, the piezoelectric vibrator 15 is provided by a metal spring 26 such as a metal leaf spring or a coil spring as a supporting member and a vibration transmitting member and as an elastic member.
In support of.
【００１６】この実施例の圧電振動装置は、圧電振動子
１５の中央部に、一端がケース１８に接続した支柱２４
または金属バネ２６を接続させたので、振動が効率よく
ケース１８に振動が伝達されるものである。また、圧電
振動子１５の周縁部の支持枠１６は、重り２０として機
能し、圧電振動子１５の振動を効率よく逓減されるとと
もに振幅を増大させ、ケース１８に直接効率よく振動が
伝達されるものである。さらに、図１３に示すように、
圧電振動子１５の中央部に、支柱２４を接続させること
により、支柱２４の他端が接続した側のケース１８を、
効率よく振動させることができる。また、図１４に示す
ように、支柱２４を金属バネ２６のみにより支持するこ
とにより、ケース１８の金属バネ２６に接続した方を、
比較的低周波で、大きな振幅で振動させることができ
る。In the piezoelectric vibrating device of this embodiment, a pillar 24 having one end connected to the case 18 is provided at the center of the piezoelectric vibrator 15.
Alternatively, since the metal spring 26 is connected, the vibration is efficiently transmitted to the case 18. In addition, the support frame 16 on the peripheral portion of the piezoelectric vibrator 15 functions as a weight 20, efficiently reduces the vibration of the piezoelectric vibrator 15 and increases the amplitude, and the vibration is directly transmitted to the case 18 efficiently. It is a thing. Further, as shown in FIG.
By connecting the support column 24 to the central portion of the piezoelectric vibrator 15, the case 18 on the side to which the other end of the support column 24 is connected,
It can be vibrated efficiently. Further, as shown in FIG. 14, by supporting the support column 24 only by the metal spring 26, the one connected to the metal spring 26 of the case 18 is
It is possible to vibrate with a relatively low frequency and large amplitude.
【００１７】次のこの発明の第五実施例の圧電振動装置
について図１５、図１６を基にして説明する。ここで上
述の実施例と同様の部材は同一符号を付して説明を省略
する。この実施例の圧電振動装置は、圧電振動子１５の
一方の側の中央部を支柱２４または金属バネ２６で支持
し、圧電振動子１５の他方の側を、支持枠１６に固定さ
れた受け板２８及びこの受け板２８に接続した板バネや
コイルバネ等の金属バネ３０により支持したものであ
る。そして、金属バネ３０の他端はケース１８に接続し
ている。図１５に示すものは、圧電振動子１５の中央部
を支柱２４により支持したものである。また、図１６に
示すものは、圧電振動子１５の中央部を金属バネ２６に
より支持したものである。A piezoelectric vibrating device according to a fifth embodiment of the present invention will be described below with reference to FIGS. 15 and 16. Here, the same members as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted. In the piezoelectric vibrating device of this embodiment, the central portion of one side of the piezoelectric vibrator 15 is supported by the support column 24 or the metal spring 26, and the other side of the piezoelectric vibrator 15 is fixed to the support frame 16 by a receiving plate. 28 and a metal spring 30 such as a leaf spring or a coil spring connected to the receiving plate 28. The other end of the metal spring 30 is connected to the case 18. As shown in FIG. 15, the central portion of the piezoelectric vibrator 15 is supported by the support column 24. In addition, as shown in FIG. 16, the central portion of the piezoelectric vibrator 15 is supported by a metal spring 26.
【００１８】この実施例の圧電振動装置によっても、上
記第三実施例と同様に、効果的に振動をケース１８に伝
達することができるものである。The piezoelectric vibrating device of this embodiment can also effectively transmit the vibration to the case 18, as in the third embodiment.
【００１９】次のこの発明の第六実施例の圧電振動装置
について図１７を基にして説明する。ここで上述の実施
例と同様の部材は同一符号を付して説明を省略する。こ
の実施例の圧電振動装置は、圧電振動子１５の振動板３
２を絶縁性の樹脂等で形成したものである。そして、振
動板３２の両面に金属箔３４を貼り付けたものである。
そして、この実施例の圧電振動装置も上記第一乃至第五
実施例の圧電振動装置に利用できるものである。Next, a piezoelectric vibrating device according to a sixth embodiment of the present invention will be described with reference to FIG. Here, the same members as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted. The piezoelectric vibrating device according to this embodiment includes the vibrating plate 3 of the piezoelectric vibrator 15.
2 is formed of an insulating resin or the like. Then, the metal foil 34 is attached to both surfaces of the diaphragm 32.
The piezoelectric vibrating device of this embodiment can also be used in the piezoelectric vibrating devices of the first to fifth embodiments.
【００２０】この実施例の圧電振動装置は、振動板３２
を樹脂により形成しているので、より低い周波数で大き
な振幅を得ることができるものである。また支持枠１６
と一体に振動板３２を形成することもでき、その場合、
金属箔３４をインサート成形することもできる。The piezoelectric vibrating device of this embodiment has a vibrating plate 32.
Since it is formed of resin, it is possible to obtain a large amplitude at a lower frequency. Also, the support frame 16
It is also possible to form the diaphragm 32 integrally with
The metal foil 34 can also be insert-molded.
【００２１】次のこの発明の第七実施例の圧電振動装置
について図１８、図１９、図２０を基にして説明する。
ここで上述の実施例と同様の部材は同一符号を付して説
明を省略する。この実施例の圧電振動装置は、圧電振動
子１５の支持枠１６に、さらに重り２０を一体に取り付
けたものである。そして、この実施例の圧電振動装置も
上記第一乃至第五実施例の圧電振動装置に利用できるも
のである。A piezoelectric vibrating device according to a seventh embodiment of the present invention will be described below with reference to FIGS. 18, 19 and 20.
Here, the same members as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted. In the piezoelectric vibrating device of this embodiment, a weight 20 is further integrally attached to the support frame 16 of the piezoelectric vibrator 15. The piezoelectric vibrating device of this embodiment can also be used in the piezoelectric vibrating devices of the first to fifth embodiments.
【００２２】この実施例の圧電振動装置は、重り２０を
支持枠１６と一体に形成することができ、また、２色成
形等の方法によっても形成することができる。In the piezoelectric vibrating device of this embodiment, the weight 20 can be formed integrally with the support frame 16, and can also be formed by a method such as two-color molding.
【００２３】尚、この発明の圧電振動装置の圧電振動子
は、ユニモルフ素子でも良く、圧電素子に面振動を生じ
させるものであれば良い。この発明の圧電振動装置の弾
性部材は、金属製の金属バネの他、樹脂製または樹脂と
金属によるコイルバネであっても良く、他の形状のバネ
または、硬質ゴム等、振動を吸収しにくい弾性部材であ
れば良いものである。また、支柱自身もわずかながら弾
性部材として機能し得るものである。そして支柱の材質
も、樹脂の他、セラミックスや、金属であっても良い。The piezoelectric vibrator of the piezoelectric vibrating device of the present invention may be a unimorph element, as long as it causes surface vibration of the piezoelectric element. The elastic member of the piezoelectric vibrating device of the present invention may be a metal spring made of a metal, or a coil spring made of a resin or a resin and a metal. Any member can be used. Further, the support pillar itself can function as an elastic member, though slightly. The material of the pillars may be ceramics or metal in addition to resin.
【００２４】[0024]
【発明の効果】この発明の圧電振動装置は、圧電振動子
の振動を効率よく、ケースに伝達することができ、しか
も、振幅も大きい強い振動が得られるものである。従っ
て、確実に使用者が振動により信号を検知することがで
きるものである。The piezoelectric vibrating device of the present invention is capable of efficiently transmitting the vibration of the piezoelectric vibrator to the case and obtaining strong vibration having a large amplitude. Therefore, the user can surely detect the signal by the vibration.
【図１】この発明の第一実施例の圧電振動子の縦断面図
（Ａ）と平面図（Ｂ）である。FIG. 1 is a vertical sectional view (A) and a plan view (B) of a piezoelectric vibrator according to a first embodiment of the present invention.
【図２】この発明の第一実施例の圧電振動装置を示す縦
断面図である。FIG. 2 is a vertical sectional view showing a piezoelectric vibrating device according to a first embodiment of the present invention.
【図３】この発明の第一実施例の圧電振動装置の変形例
を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing a modified example of the piezoelectric vibration device of the first embodiment of the present invention.
【図４】この発明の第一実施例の圧電振動装置の変形例
を示す縦断面図である。FIG. 4 is a vertical sectional view showing a modified example of the piezoelectric vibration device of the first embodiment of the present invention.
【図５】この発明の第一実施例の圧電振動装置の変形例
を示す縦断面図である。FIG. 5 is a vertical cross-sectional view showing a modified example of the piezoelectric vibration device of the first embodiment of the present invention.
【図６】この発明の第一実施例の圧電振動装置の変形例
を示す縦断面図である。FIG. 6 is a longitudinal sectional view showing a modified example of the piezoelectric vibration device of the first embodiment of the present invention.
【図７】この発明の第一実施例の圧電振動装置の変形例
を示す縦断面図である。FIG. 7 is a vertical sectional view showing a modified example of the piezoelectric vibration device of the first embodiment of the present invention.
【図８】この発明の第二実施例の圧電振動装置を示す縦
断面図である。FIG. 8 is a vertical sectional view showing a piezoelectric vibrating device according to a second embodiment of the invention.
【図９】この発明の第二実施例の圧電振動装置の変形例
を示す縦断面図である。FIG. 9 is a vertical cross-sectional view showing a modified example of the piezoelectric vibration device of the second embodiment of the present invention.
【図１０】この発明の第三実施例の圧電振動装置を示す
縦断面図である。FIG. 10 is a longitudinal sectional view showing a piezoelectric vibrating device according to a third embodiment of the invention.
【図１１】この発明の第三実施例の圧電振動装置の変形
例を示す縦断面図である。FIG. 11 is a vertical cross-sectional view showing a modified example of the piezoelectric vibration device according to the third embodiment of the present invention.
【図１２】この発明の第三実施例の圧電振動装置の変形
例を示す縦断面図である。FIG. 12 is a vertical sectional view showing a modification of the piezoelectric vibration device according to the third embodiment of the present invention.
【図１３】この発明の第四実施例の圧電振動装置を示す
縦断面図である。FIG. 13 is a vertical sectional view showing a piezoelectric vibrating device according to a fourth embodiment of the invention.
【図１４】この発明の第四実施例の圧電振動装置の変形
例を示す縦断面図である。FIG. 14 is a longitudinal sectional view showing a modified example of the piezoelectric vibration device of the fourth embodiment of the present invention.
【図１５】この発明の第五実施例の圧電振動装置を示す
縦断面図である。FIG. 15 is a vertical sectional view showing a piezoelectric vibrating device according to a fifth embodiment of the present invention.
【図１６】この発明の第五実施例の圧電振動装置の変形
例を示す縦断面図である。FIG. 16 is a vertical cross-sectional view showing a modified example of the piezoelectric vibration device of the fifth embodiment of the present invention.
【図１７】この発明の第六実施例の圧電振動装置を示す
縦断面図である。FIG. 17 is a vertical sectional view showing a piezoelectric vibrating device according to a sixth embodiment of the present invention.
【図１８】この発明の第七実施例の圧電振動装置を示す
縦断面図である。FIG. 18 is a vertical sectional view showing a piezoelectric vibrating device according to a seventh embodiment of the present invention.
【図１９】この発明の第七実施例の圧電振動装置の変形
例を示す縦断面図である。FIG. 19 is a vertical sectional view showing a modification of the piezoelectric vibration device of the seventh embodiment of the present invention.
【図２０】この発明の第七実施例の圧電振動装置の変形
例を示す縦断面図である。FIG. 20 is a vertical sectional view showing a modified example of the piezoelectric vibration device of the seventh embodiment of the present invention.
１０ 圧電振動装置 １２，３２ 振動板 １４ 圧電体 １５ 圧電振動子 １６ 支持枠 １８ ケース ２０ 重り ２４ 支柱（支持部材） ２６，３０ 金属バネ（弾性部材） DESCRIPTION OF SYMBOLS 10 Piezoelectric vibration device 12,32 Vibration plate 14 Piezoelectric body 15 Piezoelectric vibrator 16 Support frame 18 Case 20 Weight 24 Strut (supporting member) 26, 30 Metal spring (elastic member)
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０４Ｑ 7/14 Ｈ０４Ｒ 17/00 7605−5Ｋ Ｈ０４Ｂ 7/26 １０３ Ｅ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location H04Q 7/14 H04R 17/00 7605-5K H04B 7/26 103 E
Claims (8)
れた圧電体とからなる圧電振動子と、この圧電振動子を
収容したケースと、この圧電振動子に一端が接続して取
り付けられ上記ケースに他端が接続した振動伝達部材
と、上記圧電振動子の振動数を落として可聴域より低い
周波数で振動させる振動逓減部材を設けた圧電振動装
置。1. A piezoelectric vibrator comprising a flat diaphragm and a piezoelectric body attached to the surface thereof, a case accommodating the piezoelectric vibrator, and one end connected to the piezoelectric vibrator. A piezoelectric vibrating device comprising: a vibration transmitting member, the other end of which is connected to the case; and a vibration reducing member that reduces the vibration frequency of the piezoelectric vibrator to vibrate at a frequency lower than the audible range.
周縁部を保持し、端部が上記ケースに接続した支持枠で
ある請求項１記載の圧電振動装置。2. The piezoelectric vibration device according to claim 1, wherein the vibration transmission member is a support frame that holds a peripheral portion of the piezoelectric vibrator and has an end portion connected to the case.
付けられた重りである請求項１又は２記載の圧電振動装
置。3. The piezoelectric vibrating device according to claim 1, wherein the vibration reducing member is a weight attached to the diaphragm.
付けられた弾性部材である請求項１又は２記載の圧電振
動装置。4. The piezoelectric vibration device according to claim 1, wherein the vibration reduction member is an elastic member attached to the vibration plate.
部材を設け、上記圧電振動子の周縁部に重りを兼ねた支
持枠を取り付けた請求項１記載の圧電振動装置。5. The piezoelectric vibrating device according to claim 1, wherein the vibration transmitting member is provided at a central portion of the piezoelectric vibrator, and a supporting frame which also functions as a weight is attached to a peripheral portion of the piezoelectric vibrator.
部材と振動伝達部材を兼ねた弾性部材を設け、上記圧電
振動子の周縁部に重りを兼ねて中空に位置した支持枠を
取り付けた請求項１記載の圧電振動装置。6. An elastic member, which also serves as the vibration reducing member and the vibration transmitting member, is provided in the central portion of the piezoelectric vibrator, and a hollow supporting frame is attached to the peripheral portion of the piezoelectric vibrator to serve as a weight. The piezoelectric vibration device according to claim 1.
なる請求項１記載の圧電振動装置。7. The piezoelectric vibrating device according to claim 1, wherein the piezoelectric vibrator comprises a bimorph element.
１，４，５又は６記載の圧電振動装置。8. The piezoelectric vibration device according to claim 1, 4, 5 or 6, wherein the elastic member is a metal spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6037838A JPH07213997A (en) | 1994-02-09 | 1994-02-09 | Piezoelectric vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6037838A JPH07213997A (en) | 1994-02-09 | 1994-02-09 | Piezoelectric vibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07213997A true JPH07213997A (en) | 1995-08-15 |
Family
ID=12508679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6037838A Pending JPH07213997A (en) | 1994-02-09 | 1994-02-09 | Piezoelectric vibrator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07213997A (en) |
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| KR20150080145A (en) * | 2013-12-30 | 2015-07-09 | 삼성전기주식회사 | vibrator |
| US9815086B2 (en) | 2014-01-28 | 2017-11-14 | Mplus Co., Ltd. | Vibrator and electronic device including the same |
| JP2015149663A (en) * | 2014-02-07 | 2015-08-20 | Ｎｅｃトーキン株式会社 | Vibration transmission device and piezoelectric loudspeaker |
| KR20140103878A (en) * | 2014-05-20 | 2014-08-27 | 김정훈 | Vibration apparatus employing can type piezo electric element for mobile terminal |
| US9833812B2 (en) | 2014-09-15 | 2017-12-05 | Mplus Co., Ltd. | Vibration generating device |
| JP2017034345A (en) * | 2015-07-29 | 2017-02-09 | 京セラ株式会社 | Acoustic generator |
| WO2022071053A1 (en) * | 2020-10-01 | 2022-04-07 | 太陽誘電株式会社 | Vibration generating device, and electronic instrument |
| JP2022106298A (en) * | 2021-01-06 | 2022-07-19 | エルジー ディスプレイ カンパニー リミテッド | Acoustic generator and acoustic device |
| US12069427B2 (en) | 2021-01-06 | 2024-08-20 | Lg Display Co., Ltd. | Sound generator, sound apparatus and apparatus comprising the same |
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