JP2008092025A - Speaker and electronic apparatus using same - Google Patents

Speaker and electronic apparatus using same Download PDF

Info

Publication number
JP2008092025A
JP2008092025A JP2006267629A JP2006267629A JP2008092025A JP 2008092025 A JP2008092025 A JP 2008092025A JP 2006267629 A JP2006267629 A JP 2006267629A JP 2006267629 A JP2006267629 A JP 2006267629A JP 2008092025 A JP2008092025 A JP 2008092025A
Authority
JP
Japan
Prior art keywords
plate
magnetic
voice coil
case
magnet
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.)
Granted
Application number
JP2006267629A
Other languages
Japanese (ja)
Other versions
JP4349401B2 (en
Inventor
Koji Sano
浩司 佐野
Kazuki Honda
一樹 本田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to JP2006267629A priority Critical patent/JP4349401B2/en
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to PCT/JP2007/068956 priority patent/WO2008038762A1/en
Priority to CNA2007800009184A priority patent/CN101347041A/en
Priority to EP07828696A priority patent/EP1928209A4/en
Priority to EP07828697A priority patent/EP1928210A4/en
Priority to US12/065,208 priority patent/US8160292B2/en
Priority to CNA200780000917XA priority patent/CN101347040A/en
Priority to PCT/JP2007/068955 priority patent/WO2008038761A1/en
Priority to PCT/JP2007/068954 priority patent/WO2008038760A1/en
Priority to EP07828695A priority patent/EP1928208B1/en
Priority to CN2007800009199A priority patent/CN101401453B/en
Publication of JP2008092025A publication Critical patent/JP2008092025A/en
Application granted granted Critical
Publication of JP4349401B2 publication Critical patent/JP4349401B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin type speaker and an electronic apparatus using the same, the speaker being made thin and increased in strength. <P>SOLUTION: The speaker according to the present invention comprises a case 4A, first and second plate type magnets 12 and 7 which are disposed horizontally or nearly horizontally in the case 4A through a magnetic gap, a voice coil 10 movably disposed in the magnetic gap, and a diaphragm 9 coupled to the voice coil 10. The first plate type magnet 12 has a magnetic pole formed at its plate end, and the second plate type magnet 7 has magnetic poles formed at both ends in the thickness direction thereof, magnetic flux being nearly orthogonal to the part of the voice coil 10 in the magnetic gap. A plane of the first plate type magnet 12 is plane-fixed to a nonmagnetic substance portion of the case 4A and a plane of the second plate type magnet 7 is plane-fixed to a magnetic substance portion of the case 4A. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は薄型タイプのスピーカとそれを用いた電子機器に関するものである。   The present invention relates to a thin type speaker and an electronic apparatus using the same.

携帯機器などの電子機器においては薄型化が要求されるため、その本体内に内蔵させるスピーカも薄型化が要求されることになる。   Since electronic devices such as portable devices are required to be thin, a speaker built in the main body is also required to be thin.

スピーカの薄型化を図るためには、その磁気回路を形成するための磁石を小型化することが当然のように行われているが、磁石を小さくすると磁力が小さくなり、その結果として音声出力も小さくなってしまうので、実際は磁石をあまり小さくはできない状態になっている（例えば、このような従来技術は下記特許文献１に記載されている。）。
特開２００５−５１２８３号公報 In order to reduce the thickness of the speaker, it is natural to reduce the size of the magnet for forming the magnetic circuit. However, if the magnet is made smaller, the magnetic force becomes smaller, resulting in sound output. Since it becomes small, the magnet cannot actually be made very small (for example, such a conventional technique is described in Patent Document 1 below).
JP 2005-51283 A

上述のごとく従来から、携帯機器などの電子機器に内蔵させるタイプのスピーカは薄型化が図られているが、音声出力が小さくなってしまうのを避けるべく、実際には磁石をあまり小さくできないのが実態で、その結果として十分に満足できる薄型化が行なえていないという問題があった。   As described above, the type of speaker built into an electronic device such as a portable device has been conventionally reduced in thickness. However, in order to avoid a decrease in audio output, the magnet cannot actually be made too small. As a result, there has been a problem that thinning which can be satisfactorily satisfied has not been achieved.

そこで本発明は薄型化が図れ、しかも振動や衝撃に対する強度を高くすることを目的にするものである。   Therefore, the present invention aims to reduce the thickness and increase the strength against vibration and impact.

そしてこの目的を達成するために本発明は、ケースと、このケース内において、磁気ギャップを介して水平方向、または略水平方向に配置した第一、第二の板状磁石と、前記磁気ギャップに可動自在に配置したボイスコイルと、このボイスコイルに結合した振動板とを備え、前記第一の板状磁石は、その板端に磁極を形成し、前記第二の板状磁石は、その厚み方向の両端に磁極を形成し、前記磁気ギャップにおけるボイスコイル部分においては、このボイスコイル部分に対して磁束が略直交する構成とするとともに、前記第一の板状磁石の平面は、前記ケースの非磁性体部分に面固定し、前記第二の板状磁石の平面は、前記ケースの磁性体部分に面固定したものである。   In order to achieve this object, the present invention provides a case, first and second plate magnets arranged in a horizontal direction or a substantially horizontal direction via a magnetic gap in the case, and the magnetic gap. A voice coil arranged movably and a diaphragm coupled to the voice coil are provided. The first plate magnet forms a magnetic pole at the plate end, and the second plate magnet has a thickness thereof. Magnetic poles are formed at both ends of the direction, and in the voice coil portion in the magnetic gap, the magnetic flux is substantially orthogonal to the voice coil portion, and the plane of the first plate magnet is The surface is fixed to the non-magnetic part, and the plane of the second plate magnet is fixed to the magnetic part of the case.

以上のように本発明は、磁気ギャップを介して水平方向、または略水平方向に配置した第一、第二の板状磁石と、前記磁気ギャップに可動自在に配置したボイスコイルと、このボイスコイルに結合した振動板とを備え、前記第一の板状磁石は、その板端に磁極を形成し、前記第二の板状磁石は、その厚み方向の両端に磁極を形成し、前記磁気ギャップにおけるボイスコイル部分においては、このボイスコイル部分に対して磁束が略直交する構成としたスピーカであって、磁気ギャップを介して水平方向、または略水平方向に配置したので、薄型化が図れ、しかも磁気ギャップの両端に第一、第二の板状磁石を配置したので、磁力を高めて音声出力を高めることもできるものとなる。   As described above, the present invention includes the first and second plate magnets arranged in the horizontal direction or the substantially horizontal direction through the magnetic gap, the voice coil movably arranged in the magnetic gap, and the voice coil. The first plate magnet has a magnetic pole formed at its plate end, and the second plate magnet has a magnetic pole formed at both ends in the thickness direction, and the magnetic gap In the voice coil portion, the loudspeaker is configured so that the magnetic flux is substantially perpendicular to the voice coil portion, and is arranged in the horizontal direction or the substantially horizontal direction through the magnetic gap, so that the thickness can be reduced. Since the first and second plate magnets are arranged at both ends of the magnetic gap, the magnetic output can be increased to increase the sound output.

また、前記第一の板状磁石の平面は、前記ケースの非磁性体部分に面固定し、前記第二の板状磁石の平面は、前記ケースの磁性体部分に面固定したものであるので、第一、第二の板状磁石がケースに強固に固定され、よって振動や衝撃に対する強度が強くなる。   In addition, the plane of the first plate magnet is fixed to the non-magnetic part of the case, and the plane of the second plate magnet is fixed to the magnetic part of the case. The first and second plate magnets are firmly fixed to the case, so that the strength against vibration and impact is increased.

以下本発明の一実施形態を、電子機器として携帯電話を例にし、添付図面を用いて説明する。   Hereinafter, an embodiment of the present invention will be described using a cellular phone as an example of an electronic device with reference to the accompanying drawings.

図１において、１は本体で、この本体１には蓋２が開閉自在に結合されている。この図１における背面側から見ると一般的な携帯電話と同じように本体１には操作ボタン（図示せず）が設けられ、また蓋２には液晶式の表示部（図示せず）が設けられている。   In FIG. 1, reference numeral 1 denotes a main body, and a lid 2 is coupled to the main body 1 so as to be freely opened and closed. When viewed from the back side in FIG. 1, the main body 1 is provided with operation buttons (not shown), and the lid 2 is provided with a liquid crystal display (not shown), as in a general mobile phone. It has been.

また、本体１の外面側には図１のごとく２個のカバー３が設けられ、これらのカバー３の背面側の本体１内には図２、図３に示したスピーカ４が実装されている。   Further, two covers 3 are provided on the outer surface side of the main body 1 as shown in FIG. 1, and the speaker 4 shown in FIGS. 2 and 3 is mounted in the main body 1 on the back side of these covers 3. .

スピーカ４は図３に示すように非磁性体であるステンレス３０１により形成された表面側のプレート５と、磁性体である冷間圧延鋼板により形成されたプレート６とで形成されたケース４Ａ内に、プレート６側からプレート５に向けて順にネオジウム製の第二の板状磁石７、磁性体である冷間圧延鋼板により形成されたリング８、ＰＥＩ樹脂フィルムにより形成された振動板９、銅線などにより形成されたボイスコイル１０、磁性体である冷間圧延鋼板により形成されたリング１１、ネオジウム製の２枚の第一の板状磁石１２を順次配置した構成となっている。   As shown in FIG. 3, the speaker 4 is placed in a case 4 </ b> A formed by a plate 5 on the surface side formed of stainless steel 301 that is a non-magnetic material and a plate 6 formed of cold-rolled steel plate that is a magnetic material. , A second plate magnet 7 made of neodymium in order from the plate 6 side to the plate 5, a ring 8 formed of a cold-rolled steel plate as a magnetic material, a diaphragm 9 formed of a PEI resin film, a copper wire The voice coil 10 formed by the above, the ring 11 formed of a cold rolled steel plate that is a magnetic material, and two neodymium first plate magnets 12 are sequentially arranged.

なお、プレート５の表面の一部と各部の外周側は図５、図６のごとく、樹脂製のフレーム１３で覆っている。   Part of the surface of the plate 5 and the outer peripheral side of each part are covered with a resin frame 13 as shown in FIGS.

図３、図５、図６に示すように、上記プレート６は長円形状で、その長手方向中心軸部分の長方形状の固定部６Ａの上平面には、長方形状の板状磁石７の下平面が接着剤（図示せず）により固定され、固定部６Ａの両側には長方形状の開口部６Ｂが形成されている。   As shown in FIGS. 3, 5, and 6, the plate 6 has an oval shape, and the upper surface of the rectangular fixing portion 6 </ b> A in the longitudinal central axis portion has a rectangular plate-shaped magnet 7 below it. The plane is fixed by an adhesive (not shown), and rectangular openings 6B are formed on both sides of the fixed portion 6A.

またプレート６の外周部分にはリング８が磁束が通過できる状態で固定されている。   A ring 8 is fixed to the outer peripheral portion of the plate 6 so that magnetic flux can pass therethrough.

さらにリング８上には振動板９の外周が載せられ、振動板９の外周部にはリング１１が載せられた状態になっている。   Further, the outer periphery of the diaphragm 9 is placed on the ring 8, and the ring 11 is placed on the outer periphery of the diaphragm 9.

また、振動板９上方で、上記プレート６の開口部６Ｂに対向するプレート５下面部分には、上記２枚の板状磁石１２の上面が接着剤（図示せず）により固定されている。なお、上記２枚の板状磁石１２のそれぞれの外周面は、上記プレート５下面部分に上記２枚の板状磁石１２の上面を接着する接着剤（図示せず）の一部が、この板状磁石１２のそれぞれの外周面とフレーム１３内周面間に進入することにより、このフレーム１３部分にも固定されている。   Further, the upper surface of the two plate magnets 12 is fixed to the lower surface of the plate 5 facing the opening 6B of the plate 6 with an adhesive (not shown) above the diaphragm 9. Each of the outer peripheral surfaces of the two plate magnets 12 has a part of an adhesive (not shown) for bonding the upper surfaces of the two plate magnets 12 to the lower surface portion of the plate 5. By entering between the outer peripheral surface of each of the magnets 12 and the inner peripheral surface of the frame 13, it is also fixed to the frame 13 portion.

また振動板９上面で、板状磁石７の外周に対応する部分には、図６に示すように長円形状のボイスコイル１０が固定されている。   In addition, an elliptical voice coil 10 is fixed to a portion of the upper surface of the diaphragm 9 corresponding to the outer periphery of the plate magnet 7 as shown in FIG.

以上のように構成された状態で、ネオジウム製の２枚の板状磁石１２は、図７に示すごとく、その長手方向内側端部がＮ極、外側端部がＳ極に磁化されている。   In the state configured as described above, the two plate magnets 12 made of neodymium are magnetized such that the inner end in the longitudinal direction is an N pole and the outer end is an S pole as shown in FIG.

また、ネオジウム製の板状磁石７は、図７に示すごとく、その厚み方向の表面側がＳ極、厚み方向の下面側がＮ極に磁化されている。   Further, as shown in FIG. 7, the neodymium plate magnet 7 is magnetized such that the surface side in the thickness direction is an S pole and the lower surface side in the thickness direction is an N pole.

この結果、図４と図７に示すごとくネオジウム製の２枚の板状磁石１２のそれぞれの内側のＮ極から出た磁束（図４においては図面の煩雑感を避けるために一方の板状磁石１２から出た磁束だけを記載している）は、内方へと略水平に進行してボイスコイル１０を略直交状態で横切り、次に板状磁石７上面のＳ極に進入する（なお、板状磁石１２と板状磁石７は水平、または略水平状態に配置されていると説明しているが、この略水平状態とは図６に示したように板状磁石１２と板状磁石７の厚み方向が一部水平方向で重なった状態、および両者が厚み方向で一部水平方向で重なってはいないが接近した状態も含んだものである。つまり、磁束をボイスコイル１０に略直交するように進行させることが重要で、その点で水平状態には若干の幅が設定されるものである）。   As a result, as shown in FIGS. 4 and 7, the magnetic flux emitted from the N pole inside each of the two plate magnets 12 made of neodymium (in FIG. 4, one plate magnet is used in order to avoid the complexity of the drawing. (Only the magnetic flux from 12 is shown) travels substantially horizontally inward, crosses the voice coil 10 in a substantially orthogonal state, and then enters the S pole on the upper surface of the plate magnet 7 (note that Although the plate-like magnet 12 and the plate-like magnet 7 are described as being arranged in a horizontal or substantially horizontal state, this substantially horizontal state means the plate-like magnet 12 and the plate-like magnet 7 as shown in FIG. This includes a state in which a part of the thickness direction overlaps in the horizontal direction, and a state in which the both do not overlap in the thickness direction but partly in the horizontal direction. It is important that the Is intended to be set).

その後、板状磁石７下面のＮ極から出た磁束はプレート６の長方形状の固定部６Ａを進行し、リング８、振動板９の外周部を通過後にリング１１に進入し、次にこのリング１１を例えば４分の１周進行後、このリング１１の内周に図６のごとく固定されている板状磁石１２の外周Ｓ極へと進入することとなる。   Thereafter, the magnetic flux emitted from the N pole on the lower surface of the plate-shaped magnet 7 travels through the rectangular fixed portion 6A of the plate 6, enters the ring 11 after passing through the outer periphery of the ring 8 and the diaphragm 9, and then enters this ring. For example, after a quarter of a round travels 11, it enters the outer peripheral S pole of the plate magnet 12 fixed to the inner periphery of the ring 11 as shown in FIG. 6.

そして以上の磁束の流れがそのまま磁気回路となり、この磁気回路内で板状磁石１２の内側Ｎ極と板状磁石７の上面Ｓ極間が磁気ギャップとなり、この磁気ギャップでボイスコイル１０は電磁界駆動力が与えられ、これによりボイスコイル１０が固定された振動板９に振動が伝えられ、音声出力が発せられることになる。   The flow of the magnetic flux directly becomes a magnetic circuit, and a magnetic gap is formed between the inner N pole of the plate magnet 12 and the upper surface S pole of the plate magnet 7 in the magnetic circuit. A driving force is applied, whereby vibration is transmitted to the diaphragm 9 to which the voice coil 10 is fixed, and sound output is generated.

ここで再び磁気ギャップにおける磁束の進行について説明する。   Here, the progression of the magnetic flux in the magnetic gap will be described again.

図４と図７に示す板状磁石１２のそれぞれの内側のＮ極から出た磁束は、磁気ギャップにおいて内方へと略水平に進行し、ボイスコイル１０を略直交状態で横切るということは電磁界駆動力を大きくするために非常に重要なことであり、本実施の形態において大きな特徴点となっている。   The magnetic flux emitted from the N pole inside each of the plate magnets 12 shown in FIGS. 4 and 7 travels substantially inward in the magnetic gap and crosses the voice coil 10 in a substantially orthogonal state. This is very important for increasing the field driving force, and is a major feature of the present embodiment.

本実施の形態において、磁束が磁気ギャップにおいて内方へと略水平に進行し、ボイスコイル１０を略直交状態で横切る理由について考察する。   In the present embodiment, the reason why the magnetic flux travels substantially inward in the magnetic gap and crosses the voice coil 10 in a substantially orthogonal state will be considered.

一般的に考えると、板状磁石１２のＮ極から出た磁束は、距離的に短い板状磁石７の上面のＳ極へと斜めに進行しようとするが（この場合磁束はボイスコイル１０をわずかながら斜めに横切ることになる）、板状磁石７の下面のＮ極の反発を受けることで、実際にはその反発力で持ち上げられ、その結果として本実施の形態においては、磁束が磁気ギャップにおいて内方へと図７のごとく略水平に進行し、ボイスコイル１０を略直交状態で横切るものと考えられる。   Generally speaking, the magnetic flux emitted from the N pole of the plate magnet 12 tends to travel obliquely toward the S pole on the upper surface of the plate magnet 7 with a short distance (in this case, the magnetic flux passes through the voice coil 10). In this embodiment, as a result, the magnetic flux is lifted by the magnetic gap by receiving the repulsion of the N pole on the lower surface of the plate magnet 7. In FIG. 7, it is considered to travel substantially horizontally as shown in FIG. 7 and cross the voice coil 10 in a substantially orthogonal state.

さて本実施の形態では上述のごとく磁気ギャップの両側に板状磁石１２，７を設けたので、いわゆる磁力が大きくなり、その結果として上記振動板９による音声出力も大きなものとすることができる。   In the present embodiment, since the plate magnets 12 and 7 are provided on both sides of the magnetic gap as described above, the so-called magnetic force is increased, and as a result, the sound output by the diaphragm 9 can be increased.

また、磁力を大きくするための板状磁石１２，７は文字通り板状でそれ自体が薄型のものであるので、結果として全体形状を非常に薄いものとすることができる。   Further, since the plate-like magnets 12 and 7 for increasing the magnetic force are literally plate-like and thin themselves, as a result, the overall shape can be made very thin.

また、このようにして設けた二枚の板状磁石１２は表面積の大きなその上面を、プレート５下面部分に、接着剤（図示せず）により固定しているので、ケース４Ａに加わる振動や衝撃に対する強度が強くなる。   Further, since the two plate-like magnets 12 provided in this way have their upper surface having a large surface area fixed to the lower surface portion of the plate 5 with an adhesive (not shown), vibration and impact applied to the case 4A. The strength against is increased.

さらにプレート５は非磁性体製なので、両端がＮ極とＳ極となった板状磁石１２の上面全体を覆っても磁気的な短絡を生じさせることもない。   Further, since the plate 5 is made of a non-magnetic material, even if the entire upper surface of the plate magnet 12 having both ends of the N pole and the S pole is covered, no magnetic short circuit is caused.

また板状磁石７は表面積の大きなその下面を、磁性体製のプレート６上面部分に、接着剤（図示せず）により固定しているので、ケース４Ａに加わる振動や衝撃に対する強度が強くなる。さらにプレート６は磁性体製なので、上下端がＳ極とＮ極となった板状磁石７の下面全体を覆っても図４に示す磁気回路形成を阻害することもない。   Further, since the lower surface of the plate magnet 7 having a large surface area is fixed to the upper surface portion of the magnetic plate 6 with an adhesive (not shown), the strength against vibration and impact applied to the case 4A is increased. Further, since the plate 6 is made of a magnetic material, even if the entire lower surface of the plate magnet 7 whose upper and lower ends are S and N poles is covered, the formation of the magnetic circuit shown in FIG. 4 is not hindered.

以上のように本発明は、磁気ギャップを介して水平方向、または略水平方向に配置した第一、第二の板状磁石と、前記磁気ギャップに可動自在に配置したボイスコイルと、このボイスコイルに結合した振動板とを備え、前記第一の板状磁石は、その板端に磁極を形成し、前記第二の板状磁石は、その厚み方向の両端に磁極を形成し、前記磁気ギャップにおけるボイスコイル部分においては、このボイスコイル部分に対して磁束が略直交する構成としたスピーカであって、磁気ギャップを介して水平方向、または略水平方向に配置したので、薄型化が図れ、しかも磁気ギャップの両端に第一、第二の板状磁石を配置したので、磁力を高めて音声出力を高めることもできるものとなる。   As described above, the present invention includes the first and second plate magnets arranged in the horizontal direction or the substantially horizontal direction through the magnetic gap, the voice coil movably arranged in the magnetic gap, and the voice coil. The first plate magnet has a magnetic pole formed at its plate end, and the second plate magnet has a magnetic pole formed at both ends in the thickness direction, and the magnetic gap In the voice coil portion, the loudspeaker is configured so that the magnetic flux is substantially perpendicular to the voice coil portion, and is arranged in the horizontal direction or the substantially horizontal direction through the magnetic gap, so that the thickness can be reduced. Since the first and second plate magnets are arranged at both ends of the magnetic gap, the magnetic output can be increased to increase the sound output.

また、前記第一の板状磁石の平面は、前記ケースの非磁性体部分に面固定し、前記第二の板状磁石の平面は、前記ケースの磁性体部分に面固定したものであるので、第一、第二の板状磁石がケースに強固に固定され、よって振動や衝撃に対する強度が強くなる。   In addition, the plane of the first plate magnet is fixed to the non-magnetic part of the case, and the plane of the second plate magnet is fixed to the magnetic part of the case. The first and second plate magnets are firmly fixed to the case, so that the strength against vibration and impact is increased.

この結果、携帯電話等の携帯機器には非常に活用しやすいものとなる。   As a result, it becomes very easy to use for portable devices such as mobile phones.

本発明の一実施形態を携帯電話に適用した斜視図The perspective view which applied one Embodiment of this invention to the mobile telephone 本発明の一実施形態を携帯電話に適用した斜視図The perspective view which applied one Embodiment of this invention to the mobile telephone 同スピーカの分解斜視図Exploded perspective view of the speaker 同スピーカの分解斜視図Exploded perspective view of the speaker 同スピーカを長手方向で切断した断面図Sectional view of the speaker cut in the longitudinal direction 同スピーカを短手方向で切断した断面図Sectional view of the speaker cut in the short direction 図６のＡ部分の拡大断面図6 is an enlarged cross-sectional view of a portion A in FIG.

符号の説明Explanation of symbols

１ 本体
４ スピーカ
４Ａ ケース
７ 第二の板状磁石
１２ 第一の板状磁石 1 Main Body 4 Speaker 4A Case 7 Second Plate Magnet 12 First Plate Magnet

Claims (5)

ケースと、このケース内において、磁気ギャップを介して水平方向、または略水平方向に配置した第一、第二の板状磁石と、前記磁気ギャップに可動自在に配置したボイスコイルと、このボイスコイルに結合した振動板とを備え、前記第一の板状磁石は、その板端に磁極を形成し、前記第二の板状磁石は、その厚み方向の両端に磁極を形成し、前記磁気ギャップにおけるボイスコイル部分においては、このボイスコイル部分に対して磁束が略直交する構成とするとともに、前記第一の板状磁石の平面は、前記ケースの非磁性体部分に面固定し、前記第二の板状磁石の平面は、前記ケースの磁性体部分に面固定したスピーカ。 A case, first and second plate magnets disposed in a horizontal or substantially horizontal direction via a magnetic gap in the case, a voice coil movably disposed in the magnetic gap, and the voice coil The first plate magnet has a magnetic pole formed at its plate end, and the second plate magnet has a magnetic pole formed at both ends in the thickness direction, and the magnetic gap In the voice coil portion, the magnetic flux is substantially perpendicular to the voice coil portion, and the plane of the first plate magnet is fixed to the non-magnetic portion of the case, and the second The flat surface of the plate magnet is a speaker whose surface is fixed to the magnetic part of the case. 長方形状の第二の板状磁石の長手方向両側に、それぞれ磁気ギャップを介して長方形状の第一の板状磁石を、その長手方向を略対向させて配置し、ボイスコイルは平面形状を略長円形状とし、この略長円形状のボイスコイルの両側の長辺を、長方形状の第二の板状磁石の両側の磁気ギャップに配置した請求項１に記載のスピーカ。 The rectangular first plate magnets are arranged on both sides in the longitudinal direction of the rectangular second plate magnet via the magnetic gaps so that the longitudinal directions thereof are substantially opposed to each other, and the voice coil has a substantially planar shape. The speaker according to claim 1, wherein the speaker has an oval shape, and the long sides on both sides of the substantially oval voice coil are arranged in the magnetic gap on both sides of the rectangular second plate magnet. 前記第一の板状磁石の平面は、非磁性体により形成したケースの正面板部分に面固定した請求項１、または２に記載のスピーカ。 The speaker according to claim 1 or 2, wherein a plane of the first plate magnet is fixed to a front plate portion of a case formed of a nonmagnetic material. 正面板はケース内面側から外方に向けて打ち抜いた放音孔を有する請求項３に記載のスピーカ。 The speaker according to claim 3, wherein the front plate has a sound emitting hole punched outward from the inner surface of the case. 請求項１から請求項４のいずれか一つに記載のスピーカを本体内に内蔵した電子機器。 The electronic device which incorporated the speaker as described in any one of Claim 1 to 4 in the main body.
JP2006267629A 2006-09-29 2006-09-29 Speaker and electronic device using it Expired - Fee Related JP4349401B2 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP2006267629A JP4349401B2 (en) 2006-09-29 2006-09-29 Speaker and electronic device using it
PCT/JP2007/068954 WO2008038760A1 (en) 2006-09-29 2007-09-28 Speaker and electronic equipment utilizing the same
EP07828696A EP1928209A4 (en) 2006-09-29 2007-09-28 Process for manufacturing speaker
EP07828697A EP1928210A4 (en) 2006-09-29 2007-09-28 Process for manufacturing speaker
US12/065,208 US8160292B2 (en) 2006-09-29 2007-09-28 Loudspeaker and electronic apparatus using the same
CNA200780000917XA CN101347040A (en) 2006-09-29 2007-09-28 Manufacturing method of speaker
PCT/JP2007/068956 WO2008038762A1 (en) 2006-09-29 2007-09-28 Process for manufacturing speaker
CNA2007800009184A CN101347041A (en) 2006-09-29 2007-09-28 Manufacturing method of speaker
EP07828695A EP1928208B1 (en) 2006-09-29 2007-09-28 Speaker and electronic equipment utilizing the same
CN2007800009199A CN101401453B (en) 2006-09-29 2007-09-28 Speaker and electronic equipment utilizing the same
PCT/JP2007/068955 WO2008038761A1 (en) 2006-09-29 2007-09-28 Process for manufacturing speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006267629A JP4349401B2 (en) 2006-09-29 2006-09-29 Speaker and electronic device using it

Publications (2)

Publication Number Publication Date
JP2008092025A true JP2008092025A (en) 2008-04-17
JP4349401B2 JP4349401B2 (en) 2009-10-21

Family

ID=39375739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006267629A Expired - Fee Related JP4349401B2 (en) 2006-09-29 2006-09-29 Speaker and electronic device using it

Country Status (2)

Country Link
JP (1) JP4349401B2 (en)
CN (3) CN101401453B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010119488A1 (en) * 2009-04-15 2010-10-21 三菱電機エンジニアリング株式会社 Electromagnetic converter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102638748A (en) * 2011-02-10 2012-08-15 富祐鸿科技股份有限公司 Speaker
US8503699B2 (en) 2011-06-01 2013-08-06 Infineon Technologies Ag Plate, transducer and methods for making and operating a transducer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1302523A (en) * 1999-02-26 2001-07-04 索尼公司 Speaker and speaker device
CN1943272B (en) * 2005-01-28 2012-06-27 松下电器产业株式会社 Electrokinetic electro-acoustic converter and electronic device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010119488A1 (en) * 2009-04-15 2010-10-21 三菱電機エンジニアリング株式会社 Electromagnetic converter
JP2010252028A (en) * 2009-04-15 2010-11-04 Mitsubishi Electric Engineering Co Ltd Electromagnetic converter

Also Published As

Publication number Publication date
JP4349401B2 (en) 2009-10-21
CN101401453A (en) 2009-04-01
CN101401453B (en) 2012-10-31
CN101347041A (en) 2009-01-14
CN101347040A (en) 2009-01-14

Similar Documents

Publication Publication Date Title
EP1843630B1 (en) Electrodynamic electroacoustic transducer and electronic device
EP1928208B1 (en) Speaker and electronic equipment utilizing the same
JP2008312056A (en) Electroacoustic transducer
US8712092B2 (en) Magnetic circuit and speaker using same
JP4967892B2 (en) Speaker and electronic device using it
JP4967891B2 (en) Speaker and electronic device using it
JP4349401B2 (en) Speaker and electronic device using it
JP2009033281A (en) Assembling method of speaker and electronic apparatus employing the same
JP4830761B2 (en) Speaker
JP4661666B2 (en) Speaker and electronic device using it
JP4867555B2 (en) Speaker and electronic device using it
JP2009253795A (en) Method for assembling loudspeaker and electronics using the same
JP2008092026A (en) Speaker
JP2008092032A (en) Speaker, and electronic equipment using it
JP2009171279A (en) Loudspeaker and electronic device using the loudspeaker
JP4830762B2 (en) Speaker
JP4416002B2 (en) Speaker manufacturing method
JP4416003B2 (en) Speaker manufacturing method
JP2008092034A (en) Speaker
JP2008092037A (en) Speaker
JP2009267579A (en) Speaker device
JP2009094910A (en) Speaker
JP2008092028A (en) Speaker
JP2009094913A (en) Speaker
JP2008092035A (en) Speaker

Legal Events

Date Code Title Description
TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090630

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090713

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120731

Year of fee payment: 3

R151 Written notification of patent or utility model registration

Ref document number: 4349401

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120731

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130731

Year of fee payment: 4

LAPS Cancellation because of no payment of annual fees