JP4814361B2 - Speaker unit - Google Patents

Speaker unit Download PDF

Info

Publication number
JP4814361B2
JP4814361B2 JP2009168534A JP2009168534A JP4814361B2 JP 4814361 B2 JP4814361 B2 JP 4814361B2 JP 2009168534 A JP2009168534 A JP 2009168534A JP 2009168534 A JP2009168534 A JP 2009168534A JP 4814361 B2 JP4814361 B2 JP 4814361B2
Authority
JP
Japan
Prior art keywords
standing wall
generating means
force generating
magnetic force
wall
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.)
Active
Application number
JP2009168534A
Other languages
Japanese (ja)
Other versions
JP2011024069A (en
Inventor
賢太郎 町田
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.)
Foster Electric Co Ltd
Original Assignee
Foster Electric 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
Application filed by Foster Electric Co Ltd filed Critical Foster Electric Co Ltd
Priority to JP2009168534A priority Critical patent/JP4814361B2/en
Priority to KR1020100042698A priority patent/KR101129904B1/en
Priority to CN2010101787410A priority patent/CN101959104B/en
Publication of JP2011024069A publication Critical patent/JP2011024069A/en
Application granted granted Critical
Publication of JP4814361B2 publication Critical patent/JP4814361B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops

Description

本発明は、フレームと、外周形状が細長形で、中央部に穴が形成され、外周部が前記フレームに取り付けられたコーン紙と、前記フレームに設けられた磁気回路と、筒状のボビン，該ボビンの外周面に巻回されたコイルからなり、前記コイルが前記磁気回路によって発生する磁界に配置され、前記コーン紙の内周部側に接続されるボイスコイルと、を有するスピーカユニットに関する。   The present invention includes a frame, an outer peripheral shape that is elongated, a hole is formed in a central portion, and an outer peripheral portion is attached to the frame, a magnetic circuit provided in the frame, a cylindrical bobbin, The present invention relates to a speaker unit comprising a coil wound around the outer peripheral surface of the bobbin, the voice coil being arranged in a magnetic field generated by the magnetic circuit and connected to the inner peripheral side of the cone paper.

近年、液晶やプラズマテレビにおいては、フレームの狭枠化が要望されている。このためテレビ内に設けられるスピーカは、コーン紙の外周形状が細長形のスピーカユニットが用いられる。   In recent years, there has been a demand for narrow frames in liquid crystal and plasma televisions. For this reason, a speaker unit in which the outer peripheral shape of cone paper is elongated is used as the speaker provided in the television.

更に、筐体の薄型化、小型化も要望されている。このため、薄型の細長形状のスピーカユニットが要望されている。
薄型の細長形状のスピーカユニットを実現する一例として、磁気回路の磁気ギャップを開放型（例えば、特許文献１参照）とし、コーン紙の内周とボイスコイルのボビンとの接続部をボビンの下部とすることがなされている。 Furthermore, there is a demand for thinner and smaller casings. For this reason, a thin and long speaker unit is desired.
As an example of realizing a thin and slender speaker unit, the magnetic gap of the magnetic circuit is an open type (see, for example, Patent Document 1), and the connection part between the inner periphery of cone paper and the bobbin of the voice coil is connected to the lower part of the bobbin. It has been done.

特開平６−２８４４９２号公報（図１−図６）JP-A-6-284492 (FIGS. 1-6)

しかし、開放型の磁気回路では発生する磁界が小さいので、コーン紙を振動させる駆動力が小さく、能率が悪い問題点がある。
本発明は、上記問題点に鑑みてなされたもので、能率がよいスピーカユニットを提供することを課題とする。 However, since the magnetic field generated in the open type magnetic circuit is small, there is a problem that the driving force for vibrating the cone paper is small and the efficiency is poor.
This invention is made | formed in view of the said problem, and makes it a subject to provide a speaker unit with good efficiency.

請求項１に係る発明は、フレームと、外周形状が細長形で、中央部に穴が形成され、外周部が前記フレームに取り付けられたコーン紙と、前記フレームに設けられた磁気回路と、筒状のボビン，該ボビンの外周面に巻回されたコイルからなり、前記コイルが前記磁気回路によって発生する磁界に配置され、前記コーン紙の内周部側に接続されるボイスコイルと、を有するスピーカユニットにおいて、前記磁気回路は、磁力発生手段と、 前記フレームの前記コーン紙の内周部と対向する箇所に設けられ、前記磁力発生手段が中央部に設けられた底部、前記コーン紙の長手側に対向する前記底部の周縁から前記コーン紙の内周部に向かって延出し、内面が前記磁力発生手段の周面との間に間隔をもって対向する第１立壁部，第２立壁部からなるヨークとからなり、前記ボイスコイルは、前記ボビンの内周面が前記磁力発生手段の外周面と間隔をもって、前記ボビンの外周面が前記ヨークの第１立壁部，第２立壁部の内周面と間隔をもって位置するように配置され、前記ボイスコイルのボビンの外周面と前記コーン紙の穴とはカップリングを介して接続され、前記カップリングは、前記ボイスコイルのヨークの底部と空間を介して対向し、中央部に前記ヨークの底部側と反対側のボビンが挿通し、前記ボビンの外周面が取り付けられる穴が形成された天部と、該天部の周縁から前記ヨークの底部側に延出し、前記ヨークの第１立壁部の外面と間隔をもって対向する第１立壁部対向壁，前記第２立壁部の外面と間隔をもって対向する第２立壁部対向壁，前記第１立壁部対向壁の周方向の一方の端部から前記第２立壁部対向壁の周方向の他方の端部まで形成され、前記磁力発生手段の周面と間隔をもって対向する第１磁力発生手段対向壁，前記第２立壁部対向壁の周方向の一方の端部から前記第１立壁部対向壁の周方向の他方の端部まで形成され、前記磁力発生手段の周面と間隔をもって対向する第２磁力発生手段対向壁からなる筒部からなり、前記コーン紙の穴の長手側の内周部を前記カップリングの第１立壁部対向壁，第２立壁部対向壁の外周に接続し、前記コーン紙の穴の短手側の内周部を前記カップリングの第１磁力発生手段対向壁，第２磁力発生手段対向壁の外周に接続したことを特徴とするスピーカユニットである。   According to the first aspect of the present invention, there is provided a frame, a cone paper having an elongated outer peripheral shape, a hole formed in a central portion, and an outer peripheral portion attached to the frame, a magnetic circuit provided in the frame, and a cylinder And a voice coil that is arranged in a magnetic field generated by the magnetic circuit and is connected to the inner peripheral side of the cone paper. In the speaker unit, the magnetic circuit is provided at a portion of the frame facing the inner peripheral portion of the cone paper of the frame, the bottom portion where the magnetic force generation means is provided at the center, and the length of the cone paper. The first standing wall portion and the second standing wall portion that extend from the peripheral edge of the bottom portion facing the side toward the inner peripheral portion of the cone paper and have an inner surface facing the peripheral surface of the magnetic force generating means with a space therebetween. The voice coil has an inner peripheral surface of the bobbin spaced from an outer peripheral surface of the magnetic force generating means, and an outer peripheral surface of the bobbin is an inner periphery of the first and second standing wall portions of the yoke. The outer peripheral surface of the bobbin of the voice coil and the hole of the cone paper are connected via a coupling, and the coupling connects the bottom of the voice coil yoke and the space. A top part in which a bobbin opposite to the bottom part side of the yoke is inserted in the center part and a hole to which an outer peripheral surface of the bobbin is attached is formed, and a bottom part side of the yoke from the periphery of the top part A first standing wall portion facing wall facing the outer surface of the first standing wall portion of the yoke with a gap, a second standing wall portion facing wall facing the outer surface of the second standing wall portion with a spacing, and the first standing wall portion facing One side of the wall in the circumferential direction A first magnetic force generating means facing wall and a second standing wall facing wall that are formed from one end of the second standing wall to the other end in the circumferential direction of the second standing wall facing wall and are opposed to the peripheral surface of the magnetic force generating means with a gap. A cylinder formed from one end portion in the circumferential direction to the other end portion in the circumferential direction of the first standing wall portion facing wall and facing the circumferential surface of the magnetic force generating portion with a space therebetween. The inner peripheral portion of the cone paper hole on the long side thereof is connected to the outer periphery of the first standing wall portion facing wall and the second standing wall portion facing wall of the coupling, and on the short side of the cone paper hole. The speaker unit is characterized in that an inner peripheral portion is connected to the outer periphery of the first magnetic force generating means facing wall and the second magnetic force generating means facing wall of the coupling.

請求項２に係る発明は、前記磁力発生手段は、前記ヨークの底部上に設けられ、着磁方向が前記底部と直交する方向である第１磁石と、該第１磁石上に、前記第１磁石の着磁方向と同方向に積層された磁性材でなるプレートと、該プレート上に、前記第１磁石の着磁方向と同方向に積層され、着磁方向が前記第１磁石の着磁方向と同方向で、前記プレートを介して前記第１磁石と同極対向する第２磁石と、からなることを特徴とする請求項１記載のスピーカユニットである。   According to a second aspect of the present invention, the magnetic force generating means is provided on a bottom portion of the yoke, and a first magnet having a magnetization direction perpendicular to the bottom portion, and the first magnet on the first magnet. A plate made of a magnetic material laminated in the same direction as the magnetizing direction of the magnet, and a plate laminated on the plate in the same direction as the magnetizing direction of the first magnet, and the magnetizing direction is the magnetization of the first magnet 2. The speaker unit according to claim 1, comprising: a second magnet having the same direction as that of the first magnet and having the same polarity as the first magnet through the plate.

尚、本明細書での「細長形」とは、矩形、トラック形状（角丸長方形）、楕円形等をいう。   In the present specification, “elongated” means a rectangle, a track shape (rounded rectangle), an ellipse, or the like.

請求項１に係る発明記載の発明によれば、磁気回路のヨークは、前記コーン紙の長手側に対向する前記底部の周縁から前記コーン紙の内周部に向かって延出し、内面が前記磁力発生手段の周面との間に間隔をもって対向する第１立壁部，第２立壁部を有し、前記ボイスコイルは、前記ボビンの内周面が前記磁力発生手段の外周面と間隔をもって、前記ボビンの外周面が前記ヨークの第１立壁部，第２立壁部の内周面と間隔をもって位置するように配置されることにより、コーン紙を振動させる駆動力が大きくなり、能率がよい。   According to the invention of claim 1, the yoke of the magnetic circuit extends from the peripheral edge of the bottom portion facing the longitudinal side of the cone paper toward the inner peripheral portion of the cone paper, and the inner surface thereof is the magnetic force. The voice coil has a first standing wall portion and a second standing wall portion opposed to each other with a gap between the generating means and the voice coil, wherein the inner peripheral surface of the bobbin is spaced from the outer peripheral face of the magnetic force generating means. By disposing the outer peripheral surface of the bobbin so as to be spaced from the inner peripheral surfaces of the first and second standing wall portions of the yoke, the driving force for vibrating the cone paper is increased and the efficiency is improved.

又、前記ボイスコイルのボビンの外周面と前記コーン紙の穴とはカップリングを介して接続され、前記カップリングは、前記ボイスコイルのヨークの底部と空間を介して対向し、中央部に前記ヨークの底部側と反対側のボビンが挿通し、前記ボビンの外周面が取り付けられる穴が形成された天部と、該天部の周縁から前記ヨークの底部側に延出し、前記ヨークの第１立壁部の外面と間隔をもって対向する第１立壁部対向壁，前記第２立壁部の外面と間隔をもって対向する第２立壁部対向壁，前記第１立壁部対向壁の周方向の一方の端部から前記第２立壁部対向壁の周方向の他方の端部まで形成され、前記磁力発生手段の周面と間隔をもって対向する第１磁力発生手段対向壁，前記第２立壁部対向壁の周方向の一方の端部から前記第１立壁部対向壁の周方向の他方の端部まで形成され、前記磁力発生手段の周面と間隔をもって対向する第２磁力発生手段対向壁からなる筒部からなり、前記コーン紙の穴の長手側の内周部を前記カップリングの第１立壁部対向壁，第２立壁部対向壁の外周に接続し、前記コーン紙の穴の短手側の内周部を前記カップリングの第１磁力発生手段対向壁，第２磁力発生手段対向壁の外周に接続したことにより、コーン紙の短手側の振動面積が広くなり、コーン紙の振動面積を十分に確保できる。   In addition, the outer peripheral surface of the bobbin of the voice coil and the hole of the cone paper are connected via a coupling, and the coupling faces the bottom of the yoke of the voice coil via a space, A bobbin on the opposite side to the bottom side of the yoke is inserted, a top part in which a hole to which the outer peripheral surface of the bobbin is attached is formed, and extends from the periphery of the top part to the bottom side of the yoke, A first standing wall facing wall facing the outer surface of the standing wall with an interval, a second standing wall facing wall facing the outer surface of the second standing wall with a spacing, and one end in the circumferential direction of the first standing wall facing wall To the other end in the circumferential direction of the second standing wall portion facing wall, and facing the circumferential surface of the magnetic force generating means with a space therebetween, the circumferential direction of the first standing wall portion facing wall and the second standing wall portion facing wall The first standing wall portion pair from one end of the An inner circumference on the longitudinal side of the hole of the cone paper, which is formed up to the other end portion in the circumferential direction of the wall and is composed of a cylindrical portion made of a second magnetic force generating means facing wall facing the peripheral surface of the magnetic force generating means with a space. Are connected to the outer peripheries of the first standing wall part opposing wall and the second standing wall part opposing wall of the coupling, and the inner peripheral part on the short side of the cone paper hole is the first magnetic force generating means opposing wall of the coupling By connecting to the outer periphery of the opposing wall of the second magnetic force generating means, the vibration area on the short side of the cone paper is widened, and the vibration area of the cone paper can be sufficiently secured.

更に、コーン紙の内周部をカップリングのヨーク底部側に接続することで、スピーカユニットの薄型化を図れる
請求項２に係る発明によれば、前記磁力発生手段は、前記ヨークの底部上に設けられ、着磁方向が前記底部と直交する方向である第１磁石と、該第１磁石上に、前記第１磁石の着磁方向と同方向に積層された磁性材でなるプレートと、該プレート上に、前記第１磁石の着磁方向と同方向に積層され、着磁方向が前記第１磁石の着磁方向と同方向で、前記プレートを介して前記第１磁石と同極対向する第２磁石とからなることにより、磁気回路外周の極性が同じになり、スピーカユニットから漏れる磁気が少なくなる。よって、防磁対策が不要となる。 Furthermore, the speaker unit can be thinned by connecting the inner peripheral part of the cone paper to the yoke bottom part side of the coupling. According to the invention according to claim 2, the magnetic force generating means is provided on the bottom part of the yoke. A first magnet having a magnetization direction perpendicular to the bottom, a plate made of a magnetic material laminated on the first magnet in the same direction as the magnetization direction of the first magnet, It is laminated on the plate in the same direction as the magnetizing direction of the first magnet, and the magnetizing direction is the same as the magnetizing direction of the first magnet, and is opposite to the first magnet via the plate. By comprising the second magnet, the polarity of the outer periphery of the magnetic circuit becomes the same, and the magnetism leaking from the speaker unit is reduced. As a result, no anti-magnetic measures are required.

実施の形態の発明部分を示す図であって、図５の切断線Ｉ−Ｉでの切断図である。It is a figure which shows the invention part of embodiment, Comprising: It is a cutaway figure in the cutting line II of FIG. 図１のヨークの斜視図である。It is a perspective view of the yoke of FIG. 図１のカップリングの斜視図である。It is a perspective view of the coupling of FIG. 図１の磁気回路の拡大図である。It is an enlarged view of the magnetic circuit of FIG. 実施形態のスピーカユニットの正面図である。It is a front view of the speaker unit of an embodiment. 図５の背面図である。FIG. 6 is a rear view of FIG. 5.

最初に、図５，図６を用いて実施の形態のスピーカユニットの全体構成を説明する。図５は実施形態のスピーカユニットの正面図、図６は図５の背面図である。これらの図において、コーン紙１は、外周形状がトラック形（角丸長方形）であり、その外周部は、エッジ５を介してフレーム３に取り付けられている。   Initially, the whole structure of the speaker unit of embodiment is demonstrated using FIG. 5, FIG. FIG. 5 is a front view of the speaker unit of the embodiment, and FIG. 6 is a rear view of FIG. In these drawings, the cone paper 1 has a track shape (rounded rectangular shape) on the outer periphery, and the outer periphery thereof is attached to the frame 3 via an edge 5.

次に、図１−図４を用いて、スピーカユニットの内部構成を説明する。図１は図５の切断線Ｉ−Ｉでの切断図、図２は図１のヨークの斜視図、図３は図１のカップリングの斜視図、図４は図１の磁気回路の拡大図である。   Next, the internal configuration of the speaker unit will be described with reference to FIGS. 1 is a sectional view taken along a cutting line II in FIG. 5, FIG. 2 is a perspective view of the yoke in FIG. 1, FIG. 3 is a perspective view of the coupling in FIG. 1, and FIG. It is.

図１、図４に示すように、フレーム３の中央部には、磁気回路１１が設けられている。この磁気回路１１は、ヨーク１３と磁力発生手段１５とからなっている。又、コーン紙１の中央部には、穴１ａが形成されている。   As shown in FIGS. 1 and 4, a magnetic circuit 11 is provided at the center of the frame 3. The magnetic circuit 11 includes a yoke 13 and a magnetic force generating means 15. Further, a hole 1 a is formed in the central portion of the cone paper 1.

ヨーク１３は、図１、図２に示すように、フレーム３のコーン紙１の穴１ａによって形成された内周部１ｂと対向する箇所に設けられる。そして、ヨーク１３は、磁力発生手段１５が中央部に設けられた底部１７と、コーン紙１の長手側に対向する底部１７の周縁からコーン紙１の内周部１ｂに向かって延出し、内面が磁力発生手段１５の周面との間に間隔をもって対向する第１立壁部１９，第２立壁部２１とからなっている。   As shown in FIGS. 1 and 2, the yoke 13 is provided at a location facing the inner peripheral portion 1 b formed by the hole 1 a of the cone paper 1 of the frame 3. The yoke 13 extends toward the inner peripheral portion 1b of the cone paper 1 from the periphery of the bottom portion 17 provided with the magnetic force generating means 15 at the central portion and the bottom portion 17 facing the longitudinal side of the cone paper 1. Consists of a first standing wall portion 19 and a second standing wall portion 21 which are opposed to each other with a space between the peripheral surface of the magnetic force generating means 15.

又、磁力発生手段１５は、図１、図４に示すように、ヨーク１３の底部１７上に設けられ、着磁方向が底部１７と直交する方向である第１磁石２３と、第１磁石２３上に、第１磁石２３の着磁方向と同方向に積層された磁性材でなるプレート２５と、プレート２５上に、第１磁石２３の着磁方向と同方向に積層され、着磁方向が第１磁石２３の着磁方向と同方向で、プレート２５を介して第１磁石２３と同極対向する第２磁石２７とからなっている。本実施形態では、プレート２５側をＮ極とした。従って、プレート２５の外周面近傍には、磁界が発生している。特に、プレート２５とヨーク１３の第１立壁部１９，第２立壁部２１との間は、洩れ磁束が少ないので、大きな磁界が発生している。   As shown in FIGS. 1 and 4, the magnetic force generating means 15 is provided on the bottom portion 17 of the yoke 13, and a first magnet 23 having a magnetization direction perpendicular to the bottom portion 17 and the first magnet 23. On the plate 25 made of a magnetic material laminated in the same direction as the magnetization direction of the first magnet 23, and laminated on the plate 25 in the same direction as the magnetization direction of the first magnet 23, the magnetization direction is The first magnet 23 is composed of a second magnet 27 that is opposite to the first magnet 23 in the same direction as the magnetization direction of the first magnet 23 with the same polarity as the first magnet 23. In this embodiment, the plate 25 side is an N pole. Therefore, a magnetic field is generated near the outer peripheral surface of the plate 25. In particular, a large magnetic field is generated between the plate 25 and the first standing wall portion 19 and the second standing wall portion 21 of the yoke 13 because there is little leakage magnetic flux.

図１、図４に示すように、ボイスコイル３５は、筒状のボビン３１と、ボビン３１の外周面に巻回されたコイル３３とからなっている。このボイスコイル３５のボビン３１には、外周部がフレーム３に接続され、内周部がボイスコイル３５のボビン３１に接続されたダンパ３７により、ボイスコイル３５は支持される。そして、ダンパ３７により、ボイスコイル３５は、ボビン３１の内周面が磁力発生手段１５の外周面と間隔をもって、ボビン３１の外周面がヨーク１３の第１立壁部１９，第２立壁部２１の内周面と間隔をもって位置するよう配置されている。更に、ボイスコイル３５のコイル３３が磁力発生手段１５のプレート２５の外周面に位置するように配置されている。   As shown in FIGS. 1 and 4, the voice coil 35 includes a cylindrical bobbin 31 and a coil 33 wound around the outer peripheral surface of the bobbin 31. The voice coil 35 is supported by a damper 37 whose outer peripheral portion is connected to the frame 3 and whose inner peripheral portion is connected to the bobbin 31 of the voice coil 35. The damper 37 causes the voice coil 35 to have an inner peripheral surface of the bobbin 31 spaced from the outer peripheral surface of the magnetic force generating means 15, and the outer peripheral surface of the bobbin 31 is between the first standing wall portion 19 and the second standing wall portion 21 of the yoke 13. It arrange | positions so that it may be located with an internal peripheral surface and a space | interval. Further, the coil 33 of the voice coil 35 is disposed on the outer peripheral surface of the plate 25 of the magnetic force generating means 15.

図１に示すように、ボイスコイル３５のボビン３１の外周面とコーン紙１の穴１ａとはカップリング４１を介して接続されている。
カップリング４１は、図１，図３に示すように、天部４３と筒部４５とからなっている。天部４３は、ボイスコイル３５のヨーク１３の底部１７と空間を介して対向し、中央部にヨーク１３の底部１７側と反対側のボビン３１が挿通し、ボビン３１の外周面が取り付けられる穴４７が形成されている。筒部４５は、天部４３の周縁からヨーク１３の底部１７側に延出し、ヨーク１３の第１立壁部１９の外面と間隔をもって対向する第１立壁部対向壁４５ａと、第２立壁部２１の外面と間隔をもって対向する第２立壁部対向壁４５ｂと、第１立壁部対向壁４５ａの周方向の一方の端部から第２立壁部対向壁４５ｂの周方向の他方の端部まで形成され、磁力発生手段１５の周面と間隔をもって対向する第１磁力発生手段対向壁４５ｃと、第２立壁部対向壁４５ｂの周方向の一方の端部から第１立壁部対向壁４５ａの周方向の他方の端部まで形成され、磁力発生手段１５の周面と間隔をもって対向する第２磁力発生手段対向壁４５ｄとからなっている。 As shown in FIG. 1, the outer peripheral surface of the bobbin 31 of the voice coil 35 and the hole 1 a of the cone paper 1 are connected via a coupling 41.
As shown in FIGS. 1 and 3, the coupling 41 includes a top portion 43 and a cylindrical portion 45. The top portion 43 is opposed to the bottom portion 17 of the yoke 13 of the voice coil 35 through a space, the bobbin 31 on the opposite side to the bottom portion 17 side of the yoke 13 is inserted in the center portion, and the outer peripheral surface of the bobbin 31 is attached to the hole. 47 is formed. The cylindrical portion 45 extends from the peripheral edge of the top portion 43 toward the bottom portion 17 side of the yoke 13, and is opposed to the outer surface of the first standing wall portion 19 of the yoke 13 with a space therebetween, and the second standing wall portion 21. A second standing wall portion facing wall 45b that is opposed to the outer surface of the first standing wall portion 45a, and one end portion in the circumferential direction of the first standing wall portion facing wall 45a to the other end portion in the circumferential direction of the second standing wall portion facing wall 45b. The circumferential direction of the first standing wall portion facing wall 45a from the first end portion of the first standing wall portion facing wall 45b and the first standing wall portion facing wall 45b facing the circumferential surface of the magnetic force generating means 15 with a space therebetween. The second magnetic force generating means facing wall 45d is formed up to the other end and faces the circumferential surface of the magnetic force generating means 15 with an interval.

そして、コーン紙１の穴１ａの長手側の内周部がカップリング４１の第１立壁部対向壁４５ａ，第２立壁部対向壁４５ｂの外周に接続され、コーン紙１の穴１ａの短手側の内周部がカップリング４１の第１磁力発生手段対向壁４５ｃ，第２磁力発生手段対向壁４５ｄの外周に接続されている。   The inner peripheral portion of the cone paper 1 on the long side of the hole 1a is connected to the outer periphery of the first standing wall portion facing wall 45a and the second standing wall portion facing wall 45b of the coupling 41, so that the short side of the hole 1a of the cone paper 1 is short. The inner peripheral portion on the side is connected to the outer periphery of the first magnetic force generating means facing wall 45c and the second magnetic force generating means facing wall 45d of the coupling 41.

又、図１において、フレーム３には、ターミナル５１が設けられ、ターミナル５１とボイスコイル３５のコイル３３とは、錦糸線５３で電気的に接続されている。更に、ボイスコイル３５のヨーク１３の底部１７側と反対側の開口は、コーン紙１に中央部分に設けられたダストキャップ５５で覆われている。   In FIG. 1, the frame 3 is provided with a terminal 51, and the terminal 51 and the coil 33 of the voice coil 35 are electrically connected by a tinsel wire 53. Further, the opening of the voice coil 35 on the side opposite to the bottom 17 side of the yoke 13 is covered with a dust cap 55 provided in the central portion of the cone paper 1.

次に、上記構成のスピーカユニットの作動を説明する。ターミナル５１に入力される電気信号は、錦糸線５３を介してボイスコイル３５のコイル３３に流れる。コイル３３は、磁気回路１１によって発生する磁界に配置されているので、コイル（ボイスコイル）３３（３５）に発生する駆動力により、コーン紙１が振動し。コーン紙１より、音が放射される。   Next, the operation of the speaker unit configured as described above will be described. An electrical signal input to the terminal 51 flows to the coil 33 of the voice coil 35 via the tinsel wire 53. Since the coil 33 is arranged in the magnetic field generated by the magnetic circuit 11, the cone paper 1 vibrates by the driving force generated in the coil (voice coil) 33 (35). Sound is emitted from the cone paper 1.

上記構成によれば、下記のような効果が得られる。
(1) 磁気回路１１のヨーク１３は、第１立壁部１９，第２立壁部２１を設けたことにより、プレート２５とヨーク１３の第１立壁部１９，第２立壁部２１との間は、洩れ磁束が少なくなり、大きな磁界が発生している。よって、コーン紙１を振動させる駆動力が大きくなり、能率がよい。 According to the above configuration, the following effects can be obtained.
(1) The yoke 13 of the magnetic circuit 11 is provided with the first standing wall portion 19 and the second standing wall portion 21, so that the space between the plate 25 and the first standing wall portion 19 and the second standing wall portion 21 of the yoke 13 is Leakage magnetic flux is reduced and a large magnetic field is generated. Therefore, the driving force for vibrating the cone paper 1 is increased, and the efficiency is good.

(2) ヨーク１３の第１立壁部１９，第２立壁部２１は、コーン紙１の長手側に設け、コーン紙１の短手側には、立壁部を設けていないので、コーン紙１の短手側の振動面積を広く確保でき、コーン紙１の振動面積を十分に確保できる。  (2) The first standing wall portion 19 and the second standing wall portion 21 of the yoke 13 are provided on the long side of the cone paper 1, and no standing wall portion is provided on the short side of the cone paper 1. A wide vibration area on the short side can be secured, and a sufficient vibration area of the cone paper 1 can be secured.

(3) コーン紙１の内周部をカップリング４１のヨーク１３の底部１７側に接続することで、スピーカユニットの薄型化を図れる
(4) 磁力発生手段１５は、ヨーク１３の底部１７上に設けられ、着磁方向が底部１７と直交する方向である第１磁石２３と、第１磁石２３上に、第１磁石２３の着磁方向と同方向に積層された磁性材でなるプレート２５と、プレート２５上に、第１磁石２３の着磁方向と同方向に積層され、着磁方向が第１磁石２３の着磁方向と同方向で、プレート２５を介して第１磁石２３と同極対向する第２磁石２７とからなることにより、磁気回路外周の極性が同じになり、スピーカユニットから漏れる磁気が少なくなる。よって、防磁対策が不要となる。 (3) By connecting the inner periphery of the cone paper 1 to the bottom 17 side of the yoke 13 of the coupling 41, the speaker unit can be thinned.
(4) The magnetic force generating means 15 is provided on the bottom portion 17 of the yoke 13, and the first magnet 23 is attached on the first magnet 23 and the first magnet 23 whose magnetization direction is orthogonal to the bottom portion 17. A plate 25 made of a magnetic material laminated in the same direction as the magnetic direction, and laminated on the plate 25 in the same direction as the magnetization direction of the first magnet 23, and the magnetization direction is the magnetization direction of the first magnet 23. By comprising the second magnet 27 having the same polarity as the first magnet 23 via the plate 25 in the same direction, the polarity of the outer circumference of the magnetic circuit becomes the same, and the magnetism leaking from the speaker unit is reduced. As a result, no anti-magnetic measures are required.

尚、本発明は、上記実施形態に限定するものではない。上記実施形態では、コーン紙１の形状をトラック形（角丸長方形）としたが、トラック形に限定するものではない。他に、矩形、楕円形等であってもよい。   In addition, this invention is not limited to the said embodiment. In the above embodiment, the cone paper 1 has a track shape (rounded rectangular shape), but is not limited to the track shape. In addition, a rectangle, an ellipse, etc. may be sufficient.

１ コーン紙
１ａ 穴
１１ 磁気回路
１３ ヨーク
１９ 第１立壁部
２１ 第２立壁部
３５ ボイスコイル
４１ カップリング DESCRIPTION OF SYMBOLS 1 Cone paper 1a Hole 11 Magnetic circuit 13 Yoke 19 1st standing wall part 21 2nd standing wall part 35 Voice coil 41 Coupling

Claims (2)

フレームと、
外周形状が細長形で、中央部に穴が形成され、外周部が前記フレームに取り付けられたコーン紙と、
前記フレームに設けられた磁気回路と、
筒状のボビン，該ボビンの外周面に巻回されたコイルからなり、前記コイルが前記磁気回路によって発生する磁界に配置され、前記コーン紙の内周部側に接続されるボイスコイルと、
を有するスピーカユニットにおいて、
前記磁気回路は、
磁力発生手段と、
前記フレームの前記コーン紙の内周部と対向する箇所に設けられ、前記磁力発生手段が中央部に設けられた底部、前記コーン紙の長手側に対向する前記底部の周縁から前記コーン紙の内周部に向かって延出し、内面が前記磁力発生手段の周面との間に間隔をもって対向する第１立壁部，第２立壁部からなるヨークとからなり、
前記ボイスコイルは、前記ボビンの内周面が前記磁力発生手段の外周面と間隔をもって、前記ボビンの外周面が前記ヨークの第１立壁部，第２立壁部の内周面と間隔をもって位置するように配置され、
前記ボイスコイルのボビンの外周面と前記コーン紙の穴とはカップリングを介して接続され、
前記カップリングは、
前記ボイスコイルのヨークの底部と空間を介して対向し、中央部に前記ヨークの底部側と反対側のボビンが挿通し、前記ボビンの外周面が取り付けられる穴が形成された天部と、
該天部の周縁から前記ヨークの底部側に延出し、前記ヨークの第１立壁部の外面と間隔をもって対向する第１立壁部対向壁，前記第２立壁部の外面と間隔をもって対向する第２立壁部対向壁，前記第１立壁部対向壁の周方向の一方の端部から前記第２立壁部対向壁の周方向の他方の端部まで形成され、前記磁力発生手段の周面と間隔をもって対向する第１磁力発生手段対向壁，前記第２立壁部対向壁の周方向の一方の端部から前記第１立壁部対向壁の周方向の他方の端部まで形成され、前記磁力発生手段の周面と間隔をもって対向する第２磁力発生手段対向壁からなる筒部からなり、
前記コーン紙の穴の長手側の内周部を前記カップリングの第１立壁部対向壁，第２立壁部対向壁の外周に接続し、前記コーン紙の穴の短手側の内周部を前記カップリングの第１磁力発生手段対向壁，第２磁力発生手段対向壁の外周に接続したことを特徴とするスピーカユニット。 Frame,
A cone paper having an elongated outer shape, a hole formed in the center, and an outer periphery attached to the frame;
A magnetic circuit provided in the frame;
A voice coil formed of a cylindrical bobbin, a coil wound around the outer peripheral surface of the bobbin, the coil being disposed in a magnetic field generated by the magnetic circuit, and connected to the inner peripheral side of the cone paper;
In a speaker unit having
The magnetic circuit is:
Magnetic force generating means;
It is provided at a position of the frame facing the inner peripheral portion of the cone paper, and the magnetic force generating means is provided at the center of the cone, and the inner edge of the cone paper from the periphery of the bottom portion facing the longitudinal side of the cone paper. It consists of a yoke consisting of a first standing wall portion and a second standing wall portion that extend toward the circumferential portion and whose inner surface is opposed to the circumferential surface of the magnetic force generating means with a space therebetween,
In the voice coil, the inner peripheral surface of the bobbin is located at a distance from the outer peripheral surface of the magnetic force generating means, and the outer peripheral surface of the bobbin is located at a distance from the inner peripheral surfaces of the first and second standing wall portions of the yoke. Arranged as
The outer peripheral surface of the bobbin of the voice coil and the hole of the cone paper are connected via a coupling,
The coupling is
The top of the voice coil facing the bottom of the yoke through a space, a bobbin on the opposite side to the bottom of the yoke is inserted in the center, and a hole to which the outer peripheral surface of the bobbin is attached is formed;
A second wall that extends from the peripheral edge of the top to the bottom of the yoke and faces the outer surface of the first standing wall of the yoke with a gap, and a second wall that faces the outer surface of the second standing wall with a gap. The standing wall portion opposing wall is formed from one circumferential end portion of the first standing wall portion facing wall to the other circumferential end portion of the second standing wall portion facing wall, and is spaced from the circumferential surface of the magnetic force generating means. The opposing first magnetic force generating means facing wall and the second standing wall portion facing wall are formed from one end portion in the circumferential direction to the other end portion in the circumferential direction of the first standing wall portion facing wall. Consists of a cylindrical portion consisting of a wall facing the second magnetic force generating means facing the circumferential surface with a gap,
The inner peripheral part on the long side of the hole of the cone paper is connected to the outer periphery of the first standing wall part opposing wall and the second standing wall part opposing wall of the coupling, and the inner peripheral part on the short side of the cone paper hole is A speaker unit, wherein the speaker unit is connected to the outer periphery of the first magnetic force generating means facing wall and the second magnetic force generating means facing wall of the coupling. 前記磁力発生手段は、
前記ヨークの底部上に設けられ、着磁方向が前記底部と直交する方向である第１磁石と、
該第１磁石上に、前記第１磁石の着磁方向と同方向に積層された磁性材でなるプレートと、
該プレート上に、前記第１磁石の着磁方向と同方向に積層され、着磁方向が前記第１磁石の着磁方向と同方向で、前記プレートを介して前記第１磁石と同極対向する第２磁石と、
からなることを特徴とする請求項１記載のスピーカユニット。 The magnetic force generating means is
A first magnet provided on the bottom of the yoke and having a magnetization direction perpendicular to the bottom;
A plate made of a magnetic material stacked on the first magnet in the same direction as the magnetization direction of the first magnet;
It is laminated on the plate in the same direction as the magnetization direction of the first magnet, the magnetization direction is the same direction as the magnetization direction of the first magnet, and the pole is opposed to the first magnet through the plate. A second magnet that,
The speaker unit according to claim 1, comprising:
JP2009168534A 2009-07-17 2009-07-17 Speaker unit Active JP4814361B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2009168534A JP4814361B2 (en) 2009-07-17 2009-07-17 Speaker unit
KR1020100042698A KR101129904B1 (en) 2009-07-17 2010-05-07 Speaker unit
CN2010101787410A CN101959104B (en) 2009-07-17 2010-05-12 Speaker unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009168534A JP4814361B2 (en) 2009-07-17 2009-07-17 Speaker unit

Publications (2)

Publication Number Publication Date
JP2011024069A JP2011024069A (en) 2011-02-03
JP4814361B2 true JP4814361B2 (en) 2011-11-16

Family

ID=43486156

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009168534A Active JP4814361B2 (en) 2009-07-17 2009-07-17 Speaker unit

Country Status (3)

Country Link
JP (1) JP4814361B2 (en)
KR (1) KR101129904B1 (en)
CN (1) CN101959104B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015172299A1 (en) * 2014-05-12 2015-11-19 刘骏涛 Mini-speaker
US10681468B2 (en) * 2017-07-27 2020-06-09 Yamaha Corporation Speaker diaphragm and coil coupling arrangement, and method
KR102205854B1 (en) * 2019-09-17 2021-01-21 김동만 Flat type speaker including asymmetric magnet structure and base frame

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2940587B2 (en) * 1993-03-30 1999-08-25 株式会社ケンウッド Speaker vibration detection device
JP2002159094A (en) * 2000-11-17 2002-05-31 Matsushita Electric Ind Co Ltd Speaker
JP3971625B2 (en) * 2002-02-25 2007-09-05 フォスター電機株式会社 Thin speaker and manufacturing method thereof
JP2005159506A (en) * 2003-11-21 2005-06-16 Pioneer Electronic Corp Speaker
JP2009105704A (en) * 2007-10-24 2009-05-14 Nidec Pigeon Corp Speaker
JP5076237B2 (en) * 2007-10-31 2012-11-21 並木精密宝石株式会社 Magnetic circuit structure of multifunctional vibration actuator

Also Published As

Publication number Publication date
KR101129904B1 (en) 2012-03-28
CN101959104B (en) 2013-07-03
JP2011024069A (en) 2011-02-03
CN101959104A (en) 2011-01-26
KR20110007941A (en) 2011-01-25

Similar Documents

Publication Publication Date Title
US7885425B2 (en) Electrodynamic electroacoustic transducer and electronic device
JP3841222B1 (en) Electrodynamic electroacoustic transducer and electronic equipment
US9906868B2 (en) Miniature speaker
KR101596891B1 (en) Electromagnetic drive slim speaker
JP2009118020A (en) Magnetic circuit for loudspeaker, manufacturing method thereof and loudspeaker using the same
JP4845677B2 (en) Electroacoustic transducer
US20080101648A1 (en) Electroacoustic transducer
JP4814361B2 (en) Speaker unit
JP5112159B2 (en) Electromagnetic electroacoustic transducer
JP2009049762A (en) Magnetic circuit for speaker, and speaker device
KR20090028877A (en) Electrodynamic electroacoustic transducer
JP5524726B2 (en) Speaker unit
KR100987464B1 (en) Directivity type speaker
WO2016051744A1 (en) Magnetic circuit and loudspeaker using same
KR101074248B1 (en) Speaker unit
JP4087878B2 (en) Electrodynamic electroacoustic transducer and electronic equipment
JP2007104634A (en) Electrokinetic electro-acoustic converter and electronic device
JP2009094977A (en) Electroacoustic transducer and method of manufacturing the same
KR20160109755A (en) Speaker apparatus
JP5340187B2 (en) Speaker
KR100507700B1 (en) Speaker having double magnetism circuit structure
TW202029783A (en) Moving magnetic speaker
JP3076591B2 (en) Electrodynamic electroacoustic transducer
CN111479200A (en) Plane moving magnetic loudspeaking monomer
JP2012100190A (en) Speaker unit

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110418

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110426

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: 20110816

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: 20110825

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4814361

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

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

Free format text: PAYMENT UNTIL: 20140902

Year of fee payment: 3

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250