JPH0479454A - Piezoelectric receiver for telephone set and method for adjusting its frequency characteristic - Google Patents
Piezoelectric receiver for telephone set and method for adjusting its frequency characteristicInfo
- Publication number
- JPH0479454A JPH0479454A JP19151190A JP19151190A JPH0479454A JP H0479454 A JPH0479454 A JP H0479454A JP 19151190 A JP19151190 A JP 19151190A JP 19151190 A JP19151190 A JP 19151190A JP H0479454 A JPH0479454 A JP H0479454A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- adjusting
- piezoelectric speaker
- frequency characteristics
- receiver
- 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
- 238000000034 method Methods 0.000 title claims description 14
- 238000010586 diagram Methods 0.000 description 15
- 238000007789 sealing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
Landscapes
- Telephone Set Structure (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
Description
【発明の詳細な説明】
〔Ｊｒ業上の利用分野〕
本発明（」電話機のＩ−ＵＥ、電受話器及び周波数特性
の調整方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of use in junior industry] The present invention relates to a telephone I-UE, a telephone receiver, and a frequency characteristic adjustment method.
第５図は従来の圧電受話器を用いる携帯′電話機の概略
構造を示す図であり、第６図はその圧電スビー力と取イ
；１部材の構造を示す図で、同図（ａ’）は平面図、同
図（ｂ）は断面図、第７図は圧電受話器部の詳細構造を
示す図、第８図は取付金具の構造を示！ｌ−図で、同図
（ａ）はイ則面図、同図（ｂ）は平面図である。Fig. 5 is a diagram showing the schematic structure of a mobile phone using a conventional piezoelectric receiver, and Fig. 6 is a diagram showing the piezoelectric transmission force and the structure of one member. A plan view, FIG. 7(b) is a sectional view, FIG. 7 is a diagram showing the detailed structure of the piezoelectric receiver, and FIG. 8 is a diagram showing the structure of the mounting bracket! In the 1-diagram, (a) is an A-law plane view, and (b) is a plan view.
図示するように、携帯電話機は筐体１ｏ内に圧１Ｅ受話
器取付部１２とその他の電子部品を収納する電子部品収
納部１１とが設置″）られている。As shown in the figure, the mobile phone has a 1E handset mounting part 12 and an electronic parts storage part 11 for storing other electronic parts installed in a housing 1o.
圧電受話器１３はコ゛ム製の円筒状の取付部材１４と圧
電スピーカ１５とからなり、取付部材１４の内周には帯
状に圧電スピーカ取イ・［溝１４ａが設（°）られてお
り、該圧電スピーカ取イτ１溝１４ａに圧電スピーカ１
５の縁部を挿入することにより圧電スピーカ１５を取付
部材１４に固着する。圧電受話器１３を筐体１０の圧１
Ｆ受話器部取イ＼［部１２内に取付けるには、第７に示
すように、筐体１ｏと一体に形成されたリング状の突起
部１０ａの内部に圧電受話器１３の取付部材１４の下部
を挿入し、取付金具１６の先端を圧電受話器１３の上面
に当接させ、後端をネジ１７で筐体１０に固定Ｊ−るこ
とにより行なう。取イ；１金具１６の形状は第８区（ａ
）、（ｂ）にその側面９丁面を示！１″ように、弾性を
有する細い金属板の先端を圧電受話器１３のｒＪ−電ス
ビーカ１５の面に当接する構造に折曲、後端に該取イ（
１金具１６を固定り−るネジ１７が貫通ずる穴１６ａが
形成“され２こ形状である。圧電スピーカ１５と取（１
部材１４と筐体１０とに囲まれた密閉部１８が形成され
ている。リードｆｉ１９に電気的振動信号が流れると、
Ｉｆ電スピーカ１５によりこの電気的振動信号がその周
波数と振幅レヘルに相当ｒる機械的振動に変換される。The piezoelectric receiver 13 consists of a cylindrical mounting member 14 made of a comb and a piezoelectric speaker 15. A belt-shaped groove 14a is provided on the inner periphery of the mounting member 14 to accommodate the piezoelectric speaker. Piezoelectric speaker 1 is placed in the speaker hole τ1 groove 14a.
The piezoelectric speaker 15 is fixed to the mounting member 14 by inserting the edge of the piezoelectric speaker 15 . The piezoelectric receiver 13 is connected to the pressure 1 of the housing 10.
F Receiver part \ [In order to install it in the part 12, as shown in No. 7, the lower part of the mounting member 14 of the piezoelectric handset 13 is placed inside the ring-shaped protrusion 10a formed integrally with the housing 1o. This is done by inserting the mounting bracket 16 into contact with the top surface of the piezoelectric receiver 13, and fixing the rear end to the housing 10 with screws 17. The shape of the metal fitting 16 is the 8th section (a
), (b) shows the 9th side! 1'', the tip of a thin elastic metal plate is bent into a structure that makes contact with the surface of the rJ-electronic beaker 15 of the piezoelectric receiver 13, and the rear end is fitted with the corresponding handle (
A screw 17 for fixing the metal fitting 16 passes through the hole 16a.
A sealed portion 18 is formed surrounded by the member 14 and the housing 10. When an electrical vibration signal flows through lead fi19,
If electric speaker 15 converts this electrical vibration signal into mechanical vibration corresponding to its frequency and amplitude level.
そしてこの機械的振動が筐体１０内の密閉部１８の空気
を媒体として音を伝える。This mechanical vibration transmits sound through the air in the sealed portion 18 inside the housing 10 as a medium.
以上が圧電受話器１３の概略構造と動作原理−であるか
、この動作に対して要求されるものとして周波数特性が
ある。The above is the general structure and operating principle of the piezoelectric receiver 13, and frequency characteristics are required for this operation.
；二の周波数特性を決定！ｌ−る要因としては、（１）
前記密閉１ＷＩ（：ｔ ８の体積、（２）圧電スピーカ
１５の縁部を挾持する取（＝１部材１４の挟持圧力、
（３）携帯電話機の機械的周波数特性、が挙げられる。;Determine the second frequency characteristic! The factors that cause l- are (1)
Examples include the volume of the seal 1WI (:t8), (2) the clamping pressure of the member 14 that clamps the edge of the piezoelectric speaker 15, and (3) the mechanical frequency characteristics of the mobile phone.
上記のように圧電受話器の周波数特性を決定する要因は
３つあり、圧電スピーカ１５を筐体１０内に固定する際
、これらの要因をバランス良く取り付けた場合は、所望
の周波数特性が得られるが、そうでない場合は所望の周
波数特性が得られないという問題があった。As mentioned above, there are three factors that determine the frequency characteristics of a piezoelectric receiver. When fixing the piezoelectric speaker 15 in the housing 10, if these factors are installed in a well-balanced manner, the desired frequency characteristics can be obtained. , otherwise there is a problem that desired frequency characteristics cannot be obtained.
本発明は上述の点に鑑みてなされたもので、本出願の圧
電受話器の周波数特性を決定する３つの要因のバラツキ
を除去し、圧電受話器の音声周波数特性を所望の周波数
特性にできる圧電受話器及び周波数特性の調整方法を提
供することを目的とする。The present invention has been made in view of the above-mentioned points, and includes a piezoelectric receiver and a piezoelectric receiver that can eliminate the variations in the three factors that determine the frequency characteristics of the piezoelectric receiver of the present application and make the audio frequency characteristics of the piezoelectric receiver desired frequency characteristics. The purpose of this invention is to provide a method for adjusting frequency characteristics.
上記課題を解決するため本出願の第１の発明は、電気信
号を機械的振動に換える圧電スピーカを取付部材で筐体
の所定の位置に取り付けた構造の電話機の圧電受話器に
おいて、取付部材は圧１しφ
スピーカの縁部を挾持して該圧電スピーカを固定すると
共に、該取付部材と圧電スピーカと筐体の間に密閉空間
を形成する構造とし、取イχ１部材による圧電スピーカ
の挾持圧力を調整し−Ｃ周波数特ゼ（を調整する調整手
段或いは密閉空間の体積を変２で周波数特性を調整する
調整手段の何れか−・方は双方の調整手段からなる周波
数特性調整機構を設ｉ−Ｊ、圧電スピーカと前記取１１
１部材と周波数特性調整機構とをモジュール化し／ごこ
とを特徴とする。In order to solve the above problems, the first invention of the present application is a piezoelectric receiver for a telephone having a structure in which a piezoelectric speaker that converts an electric signal into mechanical vibration is attached to a predetermined position of a housing by a mounting member, the mounting member being a pressure 1φ The piezoelectric speaker is fixed by clamping the edge of the speaker, and a sealed space is formed between the mounting member, the piezoelectric speaker, and the housing, and the clamping pressure of the piezoelectric speaker by the χ1 member is reduced. Either an adjusting means for adjusting the C frequency characteristic or an adjusting means for adjusting the frequency characteristic by changing the volume of the closed space, a frequency characteristic adjusting mechanism consisting of both adjusting means is installed. J, piezoelectric speaker and the above-mentioned part 11
It is characterized by modularizing one member and a frequency characteristic adjustment mechanism.
また、前記圧電スピーカの縁部を挾持する挾持力を調整
する方法、又は取付部材と圧電スピーカの間に形成され
る前記密閉空間の体積を調整する方法のいずれか一方又
は双方の絹合わけにより、圧電スピーカの周波数特性を
調整することを特徴とｑ−る。Further, by adjusting the clamping force for clamping the edge of the piezoelectric speaker, or by adjusting the volume of the sealed space formed between the mounting member and the piezoelectric speaker, or by combining both of them. , is characterized by adjusting the frequency characteristics of the piezoelectric speaker.
圧電受話器を上記の如く構成することにより、圧電スピ
ーカの挾持圧力を調整して周波数特ｆ／Ｉを調整する調
整手段或いは密閉空間の体積を変えて周波数特性を調整
１−る調整手段の何れか一方は双方の調整手段からなる
周波数特性調整機構を設（−１、圧電スピーカと取付部
材と周波数特性調整機構とをモジュール化するから、周
波数特性を決定する上記３つの要因のバラツキを除去で
き、且つ周波数特性調整機構を調整することで所望の音
声周波数特性を得ることができる。By configuring the piezoelectric receiver as described above, either an adjustment means that adjusts the frequency characteristic f/I by adjusting the clamping pressure of the piezoelectric speaker, or an adjustment means that adjusts the frequency characteristic by changing the volume of the closed space. On the one hand, a frequency characteristic adjustment mechanism consisting of both adjusting means is installed (-1. Since the piezoelectric speaker, the mounting member, and the frequency characteristic adjustment mechanism are modularized, it is possible to eliminate variations in the above three factors that determine the frequency characteristics, In addition, desired audio frequency characteristics can be obtained by adjusting the frequency characteristic adjustment mechanism.
また、圧電スピーカの縁部を挾持する挾持力を調整する
か、又は取付部材と圧電スピーカの間に形成される前記
密閉空間の体積を調整するかのいずれか一方又は双方の
組合わせにより、圧電スピーカの周波数特性を所望の音
声周波数特性に調整することができる。In addition, the piezoelectric speaker can be adjusted by adjusting the clamping force for clamping the edge of the piezoelectric speaker, or by adjusting the volume of the sealed space formed between the mounting member and the piezoelectric speaker, or by a combination of both. The frequency characteristics of the speaker can be adjusted to desired audio frequency characteristics.
以下、本発明の一実施例を図面に基づいて説明する。 Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図は本発明の圧電受話器を筐体１０の圧電受話器取
付部１２に取り付けた状態を示す区である。 図示す
るように、圧電受話器１３の下部を圧電受話器取付部１
２内のリング状の突起部１０ａへ挿入し、ネジ１７及び
取付金具１６で固定する点は第７図の従来例と同一であ
る。FIG. 1 shows the state in which the piezoelectric receiver of the present invention is attached to the piezoelectric receiver mounting portion 12 of the housing 10. As shown in FIG. As shown in the figure, the lower part of the piezoelectric receiver 13 is attached to the piezoelectric receiver mounting part 1.
It is the same as the conventional example shown in FIG. 7 in that it is inserted into the ring-shaped protrusion 10a in the ring 2 and fixed with the screw 17 and the mounting bracket 16.
圧電受話器１３の数例部材１４は、第２図に示すように
リング状のコ゛ム輸部１４−１と円筒状の筒部１４−２
とからなっている。Examples of the members 14 of the piezoelectric receiver 13 include a ring-shaped comb portion 14-1 and a cylindrical tube portion 14-2, as shown in FIG.
It consists of
ゴム輪部１４−１はコ゛ノ・相からなり、第３１区（ａ
）、（ｂ）にその平面及び断面を示す−ように、中央に
圧電スピーカ１５の表面が露出するように穴Ｌ４−１ｃ
が形成きれノこリング状で、その内周には圧電スピーカ
１５０縁部か挿入される帯状溝１４−１ａが形成された
形状であり、更に複数の圧力調整用のネジ穴１４−１ｃ
ｌが形成された構造である。The rubber ring part 14-1 consists of a cone and a phase, and the 31st section (a
), the plane and cross section of which are shown in (b).
is formed in the shape of a sawn ring, and has a belt-shaped groove 14-1a formed on the inner periphery into which the edge of the piezoelectric speaker 150 is inserted, and a plurality of screw holes 14-1c for pressure adjustment.
This is the structure in which l is formed.
筒部１４−２は第４図（ａ）、（ｂ）にその平面及び断
面を示すように、中央に密閉部ＩＢを形成する穴１４−
２ｂを有するプラスチック材等からなる円筒状の部材で
、その側部に密閉部１８の体積調整用のネジが螺合する
ネジ穴１４−２ａが設けられている。As shown in FIGS. 4(a) and 4(b), the cylindrical portion 14-2 has a hole 14-2 forming a sealed portion IB in the center.
2b, which is a cylindrical member made of a plastic material or the like, and a screw hole 14-2a into which a screw for adjusting the volume of the sealing part 18 is screwed is provided on the side thereof.
上記形状の筒部１４−２の」１部にコ゛ム輪部１４１を
例えば接着材等で固着し、取（＝ｊ部材１４を一
構成する。次に、ゴム輪部１４−１の帯状溝１４１ａに
圧電スピーカ１５の縁部を挿入する。次いで、コ′ム輪
部１４−１の帯状溝１４−１ ａ’ＣＩＥ電スピーカ１
５の縁部を挾み込む挾持力を調整する挾持力調整ネジ２
０をネジ穴１４−１６に螺合さけると共に、筒部１４−
２のネジ穴１４−２ａに密閉部１８の体積を調整する密
閉部調整ネジ２１を螺合させる。The comb ring part 141 is fixed to one part of the cylindrical part 14-2 having the above-mentioned shape with an adhesive or the like, and is removed (constituting one member 14).Next, the belt-shaped groove 141a of the rubber ring part 14-1 is Insert the edge of the piezoelectric speaker 15 into the band groove 14-1 of the comb ring 14-1.
Clamping force adjustment screw 2 that adjusts the clamping force that clamps the edges of 5
0 into the screw hole 14-16, and also screw the cylindrical part 14-
A sealed part adjustment screw 21 for adjusting the volume of the sealed part 18 is screwed into the screw hole 14-2a of No. 2.
上記構造の圧電受話器１３において、挾持力調整ネジ２
０の締付量を調整することにより、後に詳述するように
取付部材１４０周波数特性をｌ！ｌ整することが可能と
なる。また、密閉部調整ネジ２１の挿入量を調整するこ
とにより密閉部１８の体積を変化させ、圧電スピーカ１
５の周波数特性を調整することが可能となる。In the piezoelectric receiver 13 having the above structure, the clamping force adjustment screw 2
By adjusting the tightening amount of 0, the frequency characteristics of the mounting member 140 can be adjusted to l! as will be detailed later. It becomes possible to make adjustments. In addition, by adjusting the insertion amount of the sealing part adjustment screw 21, the volume of the sealing part 18 is changed, and the piezoelectric speaker 1
It becomes possible to adjust the frequency characteristics of 5.
上記のように、圧７Ｅスピーカ１５と取付部材１４と挾
持力調整ネジ２０及び密閉部調整ネジ２１からなる周波
数特性調整機構とをモジュール化している。このモジュ
ール化した圧電受話器１３を前述のように取イ」金具１
６及びネジ１７を用いて一
筐体１０の圧電受話器取付部１２内に取イ・柑りる。As described above, the pressure 7E speaker 15, the mounting member 14, and the frequency characteristic adjustment mechanism consisting of the clamping force adjustment screw 20 and the sealing part adjustment screw 21 are modularized. Take out this modularized piezoelectric receiver 13 as described above.
6 and screws 17 into the piezoelectric receiver mounting part 12 of the housing 10.
以下、圧電受話器１３０周波数特性の調整力法らついて
詳細に説明する。Hereinafter, a method for adjusting the frequency characteristics of the piezoelectric receiver 130 will be described in detail.
第９図は圧電受話器１３の周波数特性を調整１ｊる調整
装置の概略構成を示す図であり、第１０１閃はＩ″＋８
電受話器１３の構造を亦ず図（第２図と同一）。図にお
いて、正弦波ランダム発信器３４から所望の周波数信号
を発生させ、この周波数信号を圧電受話器１３のリード
線１９に印加する。；ユれによりこの周波数信号の周波
数と振幅に応じた音声信号が圧電受話器１３の圧電スピ
ーカ１５から発ｎ、ｌされる。この音声を受波器３１で
検出し、該受波器３１の出力を増幅器３２で増幅し、レ
ベル記録器３３で音声周波数特＋］を調べる。第９図に
おいて、点線部は自動的に周波数を選択することを示す
。FIG. 9 is a diagram showing a schematic configuration of an adjustment device for adjusting the frequency characteristics of the piezoelectric receiver 13, and the 101st frame is I''+8
This figure does not show the structure of the telephone receiver 13 (same as FIG. 2). In the figure, a desired frequency signal is generated from a sine wave random oscillator 34, and this frequency signal is applied to the lead wire 19 of the piezoelectric receiver 13. ; Due to the deflection, an audio signal corresponding to the frequency and amplitude of this frequency signal is emitted from the piezoelectric speaker 15 of the piezoelectric receiver 13. This sound is detected by a receiver 31, the output of the receiver 31 is amplified by an amplifier 32, and the sound frequency characteristic is checked by a level recorder 33. In FIG. 9, the dotted line indicates automatic frequency selection.
」−２のようにして得られた音声周波数特性か所望の特
性でない場合、第１０図の挾持力調整ネジ２０の絆め付
は量を調整し、ゴム輪部１４−１によるＶＥ電スピーカ
１５の縁部の挾持力を調整し、音声周波数特性を調整す
る。If the audio frequency characteristics obtained as in ``-2'' are not the desired characteristics, adjust the amount of tightening of the clamping force adjustment screw 20 in FIG. Adjust the clamping force of the edges of the sound frequency characteristics.
上記音声周波数特性の調整方法は圧電スピーカ１５の縁
部の挾持力を調整して行なう方法であるが、第１０図の
密閉部調整ネジ２１を第１１図（ａ）、（ｂ）に示すよ
うに、士下に調整することにより、密閉部１８の体積が
変化し、音声周波数特性を調整することができる。第１
２図（ａ）、（ｂ）は密閉部１８の体積を６ｃｃとした
場合と、３ｃｃとした場合の周波数特性を示り同図であ
る。図示するように、密閉部１８の体積を変化すること
により、周波数特性が変化することが確認できる。なお
、上記実例では圧電受話器として、圧電スピーカ１５、
取付部材１４、圧電スピーカ１５の縁部の挾持圧力を調
整して周波数特性を調整する調整機構及び密閉部１８の
体積を調整して周波数特性を調整する調整機構をモジュ
ール化したり）のを用いたが、本発明の辞意周波数特性
の調整方法に用いる圧電受話器としては、これに限定さ
れるものではなく、要は圧電スピーカの縁部の挟持圧力
を調整して音声周波数特性を調整できる構造の圧電受話
器、又は密閉部の体積を調整して音声周波数特性を調整
できる構造の圧電受話器、或いはこの挾持圧力と密閉部
の体積の両者を調整して音声周波数特性を調整できる構
造の圧電受話器であればどのような構造の圧電受話器で
あってもよいことは当然である。The above method for adjusting the audio frequency characteristics is a method of adjusting the clamping force of the edge of the piezoelectric speaker 15, and the sealing part adjustment screw 21 in FIG. 10 is replaced with the one shown in FIGS. The volume of the sealed portion 18 is changed by adjusting the volume of the sealed portion 18, and the audio frequency characteristics can be adjusted. 1st
2(a) and 2(b) show the frequency characteristics when the volume of the sealed portion 18 is 6 cc and when it is 3 cc. As shown in the figure, it can be confirmed that by changing the volume of the sealed portion 18, the frequency characteristics change. In addition, in the above example, the piezoelectric speaker 15,
The mounting member 14, the adjustment mechanism that adjusts the clamping pressure on the edges of the piezoelectric speaker 15 to adjust the frequency characteristics, and the adjustment mechanism that adjusts the frequency characteristics by adjusting the volume of the sealing part 18 are modularized. However, the piezoelectric receiver used in the method of adjusting the voice frequency characteristics of the present invention is not limited to this, but in short, it is possible to use a piezoelectric receiver having a structure in which the audio frequency characteristics can be adjusted by adjusting the clamping pressure at the edge of the piezoelectric speaker. If it is a piezoelectric handset that has a structure in which the audio frequency characteristics can be adjusted by adjusting the volume of the handset or the sealed part, or a piezoelectric handset that has a structure that allows the audio frequency characteristics to be adjusted by adjusting both the clamping pressure and the volume of the sealed part. It goes without saying that the piezoelectric receiver may have any structure.
また、上記実施例では携帯電話機を例に説明し２こが、
本発明のＩｆ電受話器は携帯電話機に限定されるもので
はなく、通常の電話機でも利札できることは当然である
。In addition, in the above embodiment, a mobile phone is used as an example.
It goes without saying that the If telephone receiver of the present invention is not limited to mobile phones, but can also be used with ordinary telephones.
以上、説明したように本発明によれは下記のような優れ
た効果が得られる。As explained above, according to the present invention, the following excellent effects can be obtained.
（１）取付部材によるｊ′：Ｊ：、電スピーカの挾持圧
力を調整して周波数特性を調整する調整手段或いは密閉
空間の体積を変えて周波数特性を調整する調整手段の何
れか−フｊは双方の調整手段からなる周波数特性調整機
構を設（す、圧電スピーカと取付部材と周波数特性調整
機構とをモジュール化するので、圧電受話器の取りイ」
は等による周波数特性を／ｌ
決定する上記３つの要因のバラツキを除去できると共に
、所望の音声周波数特性を得ることが容易となる。(1) J′: J: by the mounting member, either an adjustment means that adjusts the frequency characteristics by adjusting the clamping pressure of the electric speaker or an adjustment means that adjusts the frequency characteristics by changing the volume of the closed space. The piezoelectric speaker, the mounting member, and the frequency characteristic adjustment mechanism are modularized, making it easy to pick up the piezoelectric receiver.
It is possible to eliminate the variations in the above three factors that determine the frequency characteristics such as /l, etc., and it becomes easy to obtain the desired audio frequency characteristics.
（２）また、圧電スピーカの縁部を挾持する挾持力を調
整する方法、又は取イ」部材と圧電スピーカの間に形成
される前記密閉空間の体積を調整する方法のいずれか一
方又は双方の組合わゼにより、圧電スピーカの周波数特
性を調整することにより、所望の音声周波数特性を得る
ことができる。(2) Also, one or both of the methods of adjusting the clamping force for clamping the edge of the piezoelectric speaker, or the method of adjusting the volume of the sealed space formed between the holding member and the piezoelectric speaker. By adjusting the frequency characteristics of the piezoelectric speaker in combination, desired audio frequency characteristics can be obtained.
第１図は本発明の圧電受話器を筐体に取り付けた状態を
示す図、第２図は圧′Ｆヒ受話器の構造を示す図、第３
図（ａ）、（ｂ）はそれぞれゴム輪部の平面図、断面図
、第４図（ａ）、（ｂ）はそれぞれ筒部の平面図、断面
図、第５図は圧電受話器を用いる携帯電話機の概略構造
を示す図、第６図はその圧電スピーカと取付部材の形状
を示す図で、同図（ａ）は平面図、同図（ｂ）は断面図
、第７図は圧電受話器部の詳細構造を示す図、第８図は
取付金具の形状を示す図で、同図（ａ）は側／２
面図、同図（ｂ）は平面図、第９図は圧電受話器の周波
数特性を調整する調整装置の概略構成を示す図、第１０
図は圧電受話器の周波数特性の調整方法を示す図、第１
１図は密閉部調整ネジによる密閉部の調整状態を示す図
、第１２図（ａ）（ｂ）はそれぞれ圧電受話器の周波数
特性を示１−図である。
図中、１０・・・・筐体、１１ ・
部、１２ ・・・圧電受話器部イー１部、話器、１４・
・・・取付部材、１５
力、１６・・・・取付金具、１７ ・
密閉部、１９ ・・・リード線、２０
ネジ、２１・・・密閉部調整ネジ。
′１ヒ子部品収納
１３・・ 圧電受
圧電スビ
ネジ、１８
・・挾持力調整
特許出願人 沖電気工業株式会社
代理人 弁理士 熊 谷 隆（外１名）く
を唱舒の体積３ｃｃ
（ｂ〕
第１２図Fig. 1 is a diagram showing the piezoelectric receiver of the present invention attached to a housing, Fig. 2 is a diagram showing the structure of the piezoelectric receiver, and Fig. 3 is a diagram showing the structure of the piezoelectric receiver of the present invention.
Figures (a) and (b) are a plan view and a cross-sectional view of the rubber ring part, respectively. Figures 4 (a) and (b) are a plan view and a cross-sectional view of the cylinder part, respectively. Figure 5 is a mobile phone using a piezoelectric receiver. Figure 6 is a diagram showing the general structure of the telephone, and Figure 6 is a diagram showing the shape of its piezoelectric speaker and mounting member. Figure (a) is a plan view, Figure (b) is a sectional view, and Figure 7 is a piezoelectric receiver section. Figure 8 is a diagram showing the shape of the mounting bracket, Figure (a) is a side/two side view, Figure (b) is a plan view, Figure 9 is a diagram showing the frequency characteristics of the piezoelectric receiver. FIG. 10 shows a schematic configuration of an adjustment device for adjusting
Figure 1 shows how to adjust the frequency characteristics of a piezoelectric receiver.
1 is a diagram showing the adjustment state of the sealing part by the sealing part adjustment screw, and FIGS. 12(a) and 12(b) are diagrams showing the frequency characteristics of the piezoelectric receiver, respectively. In the figure, 10... Housing, 11. Part, 12... Piezoelectric receiver part E 1 part, Talking device, 14.
...Mounting member, 15 Force, 16...Mounting bracket, 17 Sealed part, 19...Lead wire, 20 Screw, 21... Sealed part adjustment screw. '1 Parts storage 13... Piezoelectric receiving piezoelectric screw, 18... Clamping force adjustment patent applicant Oki Electric Industry Co., Ltd. agent Patent attorney Takashi Kumagai (one other person) Volume of chanting 3cc (b) Figure 12
Claims (2)
付部材で筐体の所定の位置に取り付けた構造の電話機の
圧電受話器において、 前記取付部材は圧電スピーカの縁部を挾持して該圧電ス
ピーカを固定すると共に、該取付部材と圧電スピーカと
筐体の間に密閉空間を形成する構造とし、 前記取付部材による圧電スピーカの挾持圧力を調整して
周波数特性を調整する調整手段或いは前記密閉空間の体
積を変えて周波数特性を調整する調整手段の何れか一方
は双方の調整手段からなる周波数特性調整機構を設け、 前記圧電スピーカと前記取付部材と前記周波数特性調整
機構とをモジュール化したことを特徴とする電話機の圧
電受話器。(1) In a piezoelectric handset for a telephone having a structure in which a piezoelectric speaker that converts an electric signal into mechanical vibration is attached to a predetermined position of a housing using a mounting member, the mounting member clamps the edge of the piezoelectric speaker and and a structure that forms a sealed space between the mounting member, the piezoelectric speaker, and the housing, and an adjusting means for adjusting the frequency characteristics by adjusting the clamping pressure of the piezoelectric speaker by the mounting member, or Either one of the adjusting means for adjusting the frequency characteristic by changing the volume is provided with a frequency characteristic adjusting mechanism consisting of both adjusting means, and the piezoelectric speaker, the mounting member, and the frequency characteristic adjusting mechanism are modularized. A piezoelectric receiver for a telephone.
付部材で筐体の所定の位置に取り付けた構造の電話機の
圧電受話器において、 前記取付部材は圧電スピーカの縁部を挾持して該圧電ス
ピーカを固定すると共に、該取付部材と圧電スピーカの
間に密閉空間を形成する構造とし、 前記圧電スピーカの縁部を挾持する挾持力を調整する方
法、又は取付部材と圧電スピーカの間に形成される前記
密閉空間の体積を調整する方法のいずれか一方又は双方
の組合わせにより、圧電スピーカの周波数特性を調整す
ることを特徴とする電話機の圧電受話器の周波数特性調
整方法。(2) In a piezoelectric handset for a telephone having a structure in which a piezoelectric speaker that converts an electric signal into mechanical vibration is attached to a predetermined position of a housing using a mounting member, the mounting member holds the edge of the piezoelectric speaker and and a structure that forms a sealed space between the mounting member and the piezoelectric speaker, and a method of adjusting the clamping force for clamping the edge of the piezoelectric speaker, or a method of adjusting the clamping force that clamps the edge of the piezoelectric speaker, or a method of adjusting the clamping force that clamps the edge of the piezoelectric speaker. A method for adjusting frequency characteristics of a piezoelectric receiver of a telephone, characterized in that the frequency characteristics of a piezoelectric speaker are adjusted by one or a combination of the methods of adjusting the volume of the sealed space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19151190A JPH0479454A (en) | 1990-07-18 | 1990-07-18 | Piezoelectric receiver for telephone set and method for adjusting its frequency characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19151190A JPH0479454A (en) | 1990-07-18 | 1990-07-18 | Piezoelectric receiver for telephone set and method for adjusting its frequency characteristic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0479454A true JPH0479454A (en) | 1992-03-12 |
Family
ID=16275874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19151190A Pending JPH0479454A (en) | 1990-07-18 | 1990-07-18 | Piezoelectric receiver for telephone set and method for adjusting its frequency characteristic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0479454A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000074354A1 (en) * | 1999-05-27 | 2000-12-07 | Ericsson Inc. | Automatically adjusting acoustic output of the speaker of a telephone handset |
| JP2010237473A (en) * | 2009-03-31 | 2010-10-21 | Anden | Piezoelectric buzzer |
| US7830356B2 (en) | 2005-07-15 | 2010-11-09 | Samsung Led Co., Ltd. | Surface light source using LED and backlight unit having the surface light source |
-
1990
- 1990-07-18 JP JP19151190A patent/JPH0479454A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000074354A1 (en) * | 1999-05-27 | 2000-12-07 | Ericsson Inc. | Automatically adjusting acoustic output of the speaker of a telephone handset |
| US7830356B2 (en) | 2005-07-15 | 2010-11-09 | Samsung Led Co., Ltd. | Surface light source using LED and backlight unit having the surface light source |
| JP2010237473A (en) * | 2009-03-31 | 2010-10-21 | Anden | Piezoelectric buzzer |
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