JP2003251278A - Multifunction vibration actuator - Google Patents
Multifunction vibration actuatorInfo
- Publication number
- JP2003251278A JP2003251278A JP2002062286A JP2002062286A JP2003251278A JP 2003251278 A JP2003251278 A JP 2003251278A JP 2002062286 A JP2002062286 A JP 2002062286A JP 2002062286 A JP2002062286 A JP 2002062286A JP 2003251278 A JP2003251278 A JP 2003251278A
- Authority
- JP
- Japan
- Prior art keywords
- yoke
- vibration actuator
- magnetic circuit
- vibration
- multifunctional
- 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.)
- Withdrawn
Links
Landscapes
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、主として携帯電話
等の移動体通信機器に搭載されると共に、呼び出し音や
音声等を振動により発生する機能を有する多機能振動ア
クチュエータに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-function vibration actuator mainly mounted on a mobile communication device such as a mobile phone and having a function of generating a ringing sound or a sound by vibration.
【０００２】[0002]
【従来の技術】従来、この種の多機能振動アクチュエー
タとしては、幾つかのタイプのものが知られている。例
えば、一例に係る多機能振動アクチュエータは、ヨーク
に永久磁石の一面が当接され、且つ永久磁石の他面がプ
レートに当接されて成る磁気回路部をヨークの厚さ方向
に突出した円環状の凸部で磁気回路部外方の振動伝達部
の中途部分に取り付けられたサスペンションにより柔軟
に支持すると共に、底面側に一方のカバーを被せた振動
伝達部のサスペンションとは離間された上面側部分に他
方のカバーを被せて取り付けられた振動体にコイルが磁
気回路部の空隙部分に入り込んで配置されるように固着
された構造となっている。2. Description of the Related Art Conventionally, several types of multifunctional vibration actuators of this type have been known. For example, in a multifunctional vibration actuator according to an example, a magnetic circuit portion in which one surface of a permanent magnet is in contact with a yoke and the other surface of the permanent magnet is in contact with a plate is an annular ring projecting in the thickness direction of the yoke. The upper part of the vibration transmission part, which is flexibly supported by the suspension attached to the middle part of the vibration transmission part outside the magnetic circuit part by the convex part of, and is separated from the suspension of the vibration transmission part with one cover on the bottom side. The coil is fixed to the vibrating body attached to the other cover so as to be inserted and arranged in the void portion of the magnetic circuit section.
【０００３】即ち、この多機能振動アクチュエータで
は、ヨークの全体が低比重の磁性体材料による一体的な
部材から成ると共に、永久磁石をヨーク，プレートで挟
み込んで磁気回路部を形成した内磁型構造となってお
り、この磁気回路部が振動伝達部に固定されたサスペン
ションと組み付けられており、更にコイルを固着した振
動体をサスペンションと同様に振動伝達部に対して固定
した構造となっている。That is, in this multifunctional vibration actuator, the entire yoke is made of an integral member made of a magnetic material having a low specific gravity, and a permanent magnet is sandwiched between the yoke and the plate to form a magnetic circuit portion. This magnetic circuit section is assembled with a suspension fixed to the vibration transmitting section, and a vibrating body to which a coil is further fixed is fixed to the vibration transmitting section like the suspension.
【０００４】又、他例に係る多機能振動アクチュエータ
は、一例の場合の構造と比べ、基本構成をそのままに磁
気回路部のヨークの形状を振動伝達部側に近接する寸法
を縮小した皿型のものとした上、ヨークの外周部に高比
重の非磁性体材料から成る重りを固定した点が相違して
いる。ここでの重りに用いられる高比重の非磁性体材料
としては、例えば銅，タンタル，タングステンが挙げら
れる。Further, the multifunctional vibration actuator according to another example is a dish type in which the size of the yoke of the magnetic circuit section is reduced in size close to the vibration transmission section side, while maintaining the basic structure, as compared with the structure of the example. The difference is that a weight made of a non-magnetic material having a high specific gravity is fixed to the outer peripheral portion of the yoke. Examples of the non-magnetic material having a high specific gravity used for the weight here include copper, tantalum, and tungsten.
【０００５】このような何れの構造の多機能振動アクチ
ュエータにおいても、コイルに駆動電流を流すと、磁気
回路部やコイルを固着した振動体が厚さ方向（軸方向）
を上下に移動し、これらの移動に伴って振動伝達部等を
介して外部へ振動を伝播するようになっている。In any of the multifunctional vibration actuators having such a structure, when a driving current is applied to the coil, the magnetic circuit section and the vibrating body to which the coil is fixed are moved in the thickness direction (axial direction).
Is moved up and down, and along with these movements, the vibration is propagated to the outside via the vibration transmission unit and the like.
【０００６】[0006]
【発明が解決しようとする課題】上述した従来構造の多
機能振動アクチュエータの場合、何れの構造のものにお
いても、通常可動部となる磁気回路部の変位量を大きく
することで機械振動系の振動の大きさを大きくしている
ため、構成上においてアクチュエータ全体の厚さが増し
ており、これが小型化（特に薄型化）が要求される携帯
電話等の移動体通信機器への搭載に際して実用面で不都
合なものとなっている。In the case of the above-mentioned multi-functional vibration actuator of the conventional structure, the vibration of the mechanical vibration system is increased by increasing the displacement amount of the magnetic circuit part, which is normally the movable part, in any structure. Since the size of the actuator is increased, the overall thickness of the actuator is increased in terms of configuration, which is practical when mounted on mobile communication devices such as mobile phones that require miniaturization (especially thinness). It is inconvenient.
【０００７】又、非磁性体材料による重りを磁気回路部
におけるヨークの外周部に固定した構造の多機能振動ア
クチュエータの場合、漏洩磁束が発生し易くなってお
り、携帯電話等の移動体通信機器へ搭載したときに移動
体通信機器に対して外部の金属物等が吸着してしまう
等、使用上において不都合な問題が発生している。Further, in the case of a multifunctional vibration actuator having a structure in which a weight made of a non-magnetic material is fixed to the outer peripheral portion of a yoke in a magnetic circuit section, leakage magnetic flux is likely to occur, and mobile communication equipment such as a mobile phone. When mounted on a mobile communication device, an inconvenient problem occurs in use such as adsorption of an external metal object to the mobile communication device.
【０００８】本発明は、このような問題点を解決すべく
なされたもので、その技術的課題は、アクチュエータ全
体の厚さを縮小化できて大きな振動が得られると共に、
漏洩磁束の発生を抑制できる小型化構造の多機能振動ア
クチュエータを提供することにある。The present invention has been made to solve such a problem, and its technical problem is that the thickness of the entire actuator can be reduced and a large vibration can be obtained.
An object of the present invention is to provide a multifunctional vibration actuator having a miniaturized structure capable of suppressing the generation of leakage magnetic flux.
【０００９】[0009]
【課題を解決するための手段】本発明によれば、ヨーク
に当接された永久磁石を含む磁気回路部を該ヨークの局
部で該磁気回路部外方の振動伝達部に取り付けられたサ
スペンションにより柔軟に支持すると共に、該振動伝達
部に該サスペンションとは離間されて取り付けられた振
動体にコイルが該磁気回路部の空隙部分に入り込んで配
置されるように固着された構造の多機能振動アクチュエ
ータにおいて、ヨークは、少なくとも一部に高比重の磁
性体材料を含んで成る多機能振動アクチュエータが得ら
れる。According to the present invention, a magnetic circuit portion including a permanent magnet abutting on a yoke is attached to a vibration transmission portion outside the magnetic circuit portion at a local portion of the yoke by a suspension. A multifunctional vibration actuator having a structure in which a coil is flexibly supported and is fixed to a vibrating body that is attached to the vibration transmitting section so as to be separated from the suspension so that the coil is arranged so as to enter the void portion of the magnetic circuit section. In the above, a multifunctional vibration actuator can be obtained in which the yoke contains a magnetic material having a high specific gravity in at least a part thereof.
【００１０】又、本発明によれば、上記多機能振動アク
チュエータにおいて、ヨークは、全体が一体的な部材又
は複数の部材が組み合わされて結合された結合部材から
成る多機能振動アクチュエータが得られる。Further, according to the present invention, in the above-mentioned multifunctional vibration actuator, the multifunctional vibration actuator can be obtained in which the yoke is made of an integral member or a combination member formed by combining a plurality of members.
【００１１】更に、本発明によれば、上記多機能振動ア
クチュエータにおいて、ヨークの一体的な部材又は結合
部材の少なくとも一部は、高比重の磁性体材料から成る
多機能振動アクチュエータが得られる。Further, according to the present invention, in the above-described multifunctional vibration actuator, a multifunctional vibration actuator in which at least a part of the yoke integral member or the coupling member is made of a magnetic material having a high specific gravity can be obtained.
【００１２】加えて、本発明によれば、上記多機能振動
アクチュエータにおいて、ヨークは、高比重の磁性体材
料として、鉄又はタングステン合金を用いて成る多機能
振動アクチュエータが得られる。In addition, according to the present invention, in the above-described multifunctional vibration actuator, the yoke is obtained by using iron or tungsten alloy as the magnetic material having a high specific gravity.
【００１３】一方、本発明によれば、ヨークに当接され
た永久磁石を含む磁気回路部を該ヨークの局部で該磁気
回路部外方の振動伝達部に取り付けられたサスペンショ
ンにより柔軟に支持すると共に、該振動伝達部に該サス
ペンションとは離間されて取り付けられた振動体にコイ
ルが該磁気回路部の空隙部分に入り込んで配置されるよ
うに固着された構造の多機能振動アクチュエータにおい
て、ヨークの外周部には磁性体材料から成る重りが固定
されて配設された多機能振動アクチュエータが得られ
る。On the other hand, according to the present invention, the magnetic circuit portion including the permanent magnet that is in contact with the yoke is flexibly supported by the suspension attached to the vibration transmission portion outside the magnetic circuit portion at the local portion of the yoke. At the same time, in a multifunctional vibration actuator having a structure in which a coil is fixed to a vibrating body that is attached to the vibration transmitting section so as to be separated from the suspension so as to be arranged so as to enter the void portion of the magnetic circuit section, A multifunctional vibration actuator in which a weight made of a magnetic material is fixedly arranged on the outer peripheral portion can be obtained.
【００１４】又、本発明によれば、上記多機能振動アク
チュエータにおいて、重りは、磁性体材料として高比重
のものから成る多機能振動アクチュエータが得られる。Further, according to the present invention, in the above-mentioned multifunctional vibration actuator, it is possible to obtain a multifunctional vibration actuator in which the weight is made of a magnetic material having a high specific gravity.
【００１５】更に、本発明によれば、上記多機能振動ア
クチュエータにおいて、重りは、高比重の磁性体材料と
して、鉄又はタングステン合金を用いて成る多機能振動
アクチュエータが得られる。Furthermore, according to the present invention, in the above-mentioned multifunctional vibration actuator, the weight is a multifunctional vibration actuator in which iron or tungsten alloy is used as the magnetic material having a high specific gravity.
【００１６】加えて、本発明によれば、上記何れか一つ
の多機能振動アクチュエータにおいて、ヨークの全体，
ヨークの一部，又は重りに用いる高比重の磁性体材料を
任意に選択選定することにより、着信を知らせる振動モ
ードの共振周波数及び振動の大きさを変更設定可能な構
造である多機能振動アクチュエータが得られる。In addition, according to the present invention, in any one of the above-mentioned multifunctional vibration actuators, the entire yoke,
A multifunctional vibration actuator having a structure in which the resonance frequency and vibration magnitude of the vibration mode for notifying an incoming call can be changed and set by arbitrarily selecting and selecting a magnetic material of high specific gravity used for a part of the yoke or the weight. can get.
【００１７】他方、本発明によれば、上記何れか一つの
多機能振動アクチュエータにおいて、ヨークの全体，ヨ
ークの一部，又は重りは、磁気回路部の外周形状に応じ
て少なくともリング状，球状，平板状，カップ状，円柱
状，及び角柱状のうちの選定された一つの形状を呈して
いる多機能振動アクチュエータが得られる。On the other hand, according to the present invention, in any one of the above-mentioned multifunctional vibration actuators, the entire yoke, a part of the yoke, or the weight is at least ring-shaped, spherical, depending on the outer peripheral shape of the magnetic circuit portion. It is possible to obtain a multifunctional vibration actuator having a selected one of a flat plate shape, a cup shape, a cylindrical shape, and a prismatic shape.
【００１８】[0018]
【発明の実施の形態】以下に本発明の実施の形態につい
て、図面を参照して詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.
【００１９】図１は、本発明の一つの実施の形態に係る
多機能振動アクチュエータの基本構成を示した側面方向
での断面図である。この多機能振動アクチュエータは、
ヨーク１に永久磁石２の一面が当接され、且つ永久磁石
２の他面がプレート３に当接されて成る磁気回路部をヨ
ーク１の厚さ方向に突出した円環状の凸部で磁気回路部
外方の振動伝達部７の中途部分に取り付けられたサスペ
ンション４により柔軟に支持すると共に、底面側に一方
のカバー９を被せた振動伝達部７のサスペンション４と
は離間された上面側部分に他方のカバー８を被せて取り
付けられた振動体６にコイル５が磁気回路部の空隙部分
に入り込んで配置されるように固着された構造となって
おり、基本構成上は従来の一例に係る構造の場合と同じ
であるが、ここでのヨーク１は全体が鉄やタングステン
合金等の高比重の磁性体材料による一体的な部材から成
っており、可動部となる磁気回路部の質量を大きくする
ことにより、漏洩磁束の発生を抑制できてアクチュエー
タ全体の厚みを縮小化した上で大きな振動を発生するこ
とができるようになっている。FIG. 1 is a side sectional view showing the basic structure of a multifunctional vibration actuator according to an embodiment of the present invention. This multifunctional vibration actuator
A magnetic circuit portion formed by one surface of the permanent magnet 2 abutting on the yoke 1 and the other surface of the permanent magnet 2 abutting on the plate 3 is formed by an annular convex portion projecting in the thickness direction of the yoke 1. The suspension 4 is flexibly supported by a suspension 4 attached to a midway portion of the vibration transmitting portion 7 on the outside, and the upper surface portion of the vibration transmitting portion 7 having a cover 9 on the bottom surface is separated from the suspension 4. The structure is such that the coil 5 is fixed to the vibrating body 6 attached by covering the other cover 8 so as to be inserted and arranged in the void portion of the magnetic circuit portion. However, the yoke 1 here is entirely made of an integral member made of a magnetic material having a high specific gravity such as iron or a tungsten alloy, thereby increasing the mass of the magnetic circuit portion serving as a movable portion. By leak And it is possible to suppress the generation of flux and is capable of generating a large vibration after having reduced the thickness of the whole actuator.
【００２０】即ち、この多機能振動アクチュエータの場
合、円盤状の永久磁石２をヨーク１，プレート３で挟み
込んで磁気回路部を形成した内磁型構造となっており、
この磁気回路部が振動伝達部７に固定されたサスペンシ
ョン４と組み付けられており、更にコイル５を固着した
振動体６をサスペンション４と同様に振動伝達部７に対
して固定した構造となっている。That is, this multifunctional vibration actuator has an inner magnet type structure in which a disk-shaped permanent magnet 2 is sandwiched by a yoke 1 and a plate 3 to form a magnetic circuit section.
This magnetic circuit part is assembled with the suspension 4 fixed to the vibration transmitting part 7, and the vibrating body 6 to which the coil 5 is fixed is fixed to the vibration transmitting part 7 like the suspension 4. .
【００２１】各部のうち、永久磁石２の磁極の向きは厚
さ方向における上から下への向き、或いは下から上への
向きの何れを向いていても構わない。サスペンション４
は、円環状の凸部で磁気回路部のヨーク１の外周部を柔
軟に支持しており、サスペンション４の外周部は振動伝
達部７に固定されている。コイル５は、振動体６の径方
向の任意の位置に接着剤等により固着され、磁気回路部
の空隙部分に入り込んで配置されている。振動体５は、
平板状，皿板状，曲面状，コルゲーション，又はこれら
の各々を組み合わせた形状の任意の板厚を有するが、曲
面状の場合には単一曲率又は異種曲率の組み合わせによ
り所定の音響特性が得られるようになっている。振動伝
達部７の上面側，底面側に取り付けられたカバー８，９
は、可動部を保護するために配備されている。The magnetic poles of the permanent magnet 2 among the respective parts may be oriented either upwards or downwards or downwards or upwards in the thickness direction. Suspension 4
Has a ring-shaped convex portion that flexibly supports the outer peripheral portion of the yoke 1 of the magnetic circuit portion, and the outer peripheral portion of the suspension 4 is fixed to the vibration transmitting portion 7. The coil 5 is fixed to an arbitrary position in the radial direction of the vibrating body 6 with an adhesive or the like, and is arranged so as to enter the void portion of the magnetic circuit portion. The vibrating body 5 is
It has a flat plate, a dish plate, a curved surface, a corrugation, or any combination of these thicknesses, but in the case of a curved surface, the prescribed acoustic characteristics can be obtained by a single curvature or a combination of different curvatures. It is designed to be used. Covers 8 and 9 attached to the upper surface side and the bottom surface side of the vibration transmitting unit 7.
Are deployed to protect moving parts.
【００２２】図１に示す多機能振動アクチュエータの場
合、従来構造の場合と同様にコイル５に駆動電流を流す
ことで、磁気回路部やコイル５を固着した振動体６が厚
さ方向（軸方向）を上下に移動することに伴って振動伝
達部７を介して外部へ振動を伝播する機能を有する以
外、ここでは磁気回路部を成すヨーク１に鉄やタングス
テン合金による磁性体材料を用いているので、従来構造
の場合よりも十分に漏洩磁束の発生を抑制することがで
き、特に鉄よりも高比重の磁性体材料であるタングステ
ン合金を用いた場合にはより大きな振動を得ることがで
きるが、何れにしても従来構造の場合と同等の振動の大
きさを得るために磁気回路部の厚さ方向における可動変
位を小さくできるため、その分、アクチュエータ全体が
小型化（薄型化）された構成となっている。In the case of the multi-function vibration actuator shown in FIG. 1, a drive current is passed through the coil 5 as in the conventional structure, so that the magnetic circuit portion and the vibrating body 6 to which the coil 5 is fixed are formed in the thickness direction (axial direction). In addition to having a function of propagating vibration to the outside through the vibration transmitting portion 7 when the () is moved up and down, a magnetic material made of iron or tungsten alloy is used for the yoke 1 forming the magnetic circuit portion. Therefore, it is possible to sufficiently suppress the generation of the leakage magnetic flux as compared with the case of the conventional structure, and it is possible to obtain a larger vibration especially when the tungsten alloy which is the magnetic material having a higher specific gravity than iron is used. In any case, since the movable displacement in the thickness direction of the magnetic circuit part can be reduced in order to obtain the same magnitude of vibration as in the conventional structure, the actuator as a whole can be made smaller (thinner). And has a configuration was.
【００２３】因みに、図１に示す多機能振動アクチュエ
ータは、ヨーク１の全体に用いる高比重の磁性体材料を
任意に選択選定すれば、着信を知らせる振動モードの共
振周波数及び振動の大きさを可変的に設定可能な構造と
できる他、ヨーク１の全体の形状を磁気回路部の外周形
状に応じて可変させることができ、例えばリング状，球
状，平板状，カップ状，円柱状，角柱状等の形状にする
ことができる。By the way, in the multifunctional vibration actuator shown in FIG. 1, if the magnetic material of high specific gravity used for the entire yoke 1 is arbitrarily selected and selected, the resonance frequency and vibration magnitude of the vibration mode for notifying the incoming call can be changed. In addition to the structure that can be set dynamically, the overall shape of the yoke 1 can be changed according to the outer peripheral shape of the magnetic circuit part, such as a ring shape, a spherical shape, a flat plate shape, a cup shape, a cylindrical shape, and a prismatic shape. Can be in the shape of.
【００２４】図２は、本発明の他の実施の形態に係る多
機能振動アクチュエータの基本構成を示した側面方向で
の断面図である。この多機能振動アクチュエータの場
合、先の図１の構造と比べ、磁気回路部を成すヨークが
複数の部材を組み合わせて結合した結合部材から成る形
態となっている点が相違しており、具体的には低比重の
磁性体材料から成る皿型のヨーク１′の外周部に結合固
定された円環板状のヨーク１０が鉄やタングステン合金
等の高比重の磁性体材料から成っている。FIG. 2 is a side sectional view showing the basic structure of a multifunctional vibration actuator according to another embodiment of the present invention. This multi-function vibration actuator is different from the structure shown in FIG. 1 above in that the yoke forming the magnetic circuit portion is formed of a connecting member formed by combining and connecting a plurality of members. An annular plate-shaped yoke 10 coupled and fixed to the outer peripheral portion of a dish-shaped yoke 1'made of a magnetic material having a low specific gravity is made of a magnetic material having a high specific gravity such as iron or tungsten alloy.
【００２５】図２に示す多機能振動アクチュエータの場
合も、従来構造の場合と同様に外部へ振動を伝播する機
能を有する以外、磁気回路部を成すヨーク１０に鉄やタ
ングステン合金による磁性体材料を用いているので、従
来構造の場合よりも漏洩磁束の発生を抑制することがで
き、特に鉄よりも高比重の磁性体材料であるタングステ
ン合金を用いた場合にはより大きな振動を得ることがで
きるが、何れにしても従来構造の場合と同等の振動の大
きさを得るために磁気回路部の厚さ方向における可動変
位を小さくできるため、その分、アクチュエータ全体が
小型化（薄型化）された構成となっている。In the case of the multi-function vibration actuator shown in FIG. 2 as well, as in the case of the conventional structure, except that it has the function of propagating vibration to the outside, the yoke 10 forming the magnetic circuit part is made of a magnetic material of iron or tungsten alloy. Since it is used, it is possible to suppress the generation of leakage magnetic flux more than in the case of the conventional structure, and it is possible to obtain a larger vibration particularly when the tungsten alloy, which is a magnetic material having a higher specific gravity than iron, is used. However, in any case, since the movable displacement in the thickness direction of the magnetic circuit part can be reduced in order to obtain the same magnitude of vibration as in the case of the conventional structure, the actuator as a whole is made smaller (thinner). It is composed.
【００２６】又、この図２に示す多機能振動アクチュエ
ータにおいても、ヨークの一部を成すヨーク１０に用い
る高比重の磁性体材料を任意に選択選定すれば、着信を
知らせる振動モードの共振周波数及び振動の大きさを容
易に変更設定可能な構造とできる他、ヨーク１０の形状
を磁気回路部の外周形状に応じて可変させることがで
き、例えばリング状，球状，平板状，カップ状，円柱
状，角柱状等の形状にすることができる。Also in the multifunctional vibration actuator shown in FIG. 2, if the magnetic material having a high specific gravity used for the yoke 10 forming a part of the yoke is arbitrarily selected and selected, the resonance frequency of the vibration mode for notifying the incoming call and In addition to the structure in which the magnitude of vibration can be easily changed and set, the shape of the yoke 10 can be changed according to the outer peripheral shape of the magnetic circuit unit. For example, a ring shape, a spherical shape, a flat plate shape, a cup shape, or a column shape. The shape may be prismatic or the like.
【００２７】図３は、本発明の別の実施の形態に係る多
機能振動アクチュエータの基本構成を示した側面方向で
の断面図である。この多機能振動アクチュエータの場
合、先の図２の構造と比べ、基本構成をそのままに磁気
回路部の高比重の磁性体材料から成る円環板状のヨーク
１０に代えて鉄やタングステン合金等の高比重の非磁性
体材料から成る重り１１を固定した点が相違している。FIG. 3 is a side sectional view showing the basic structure of a multifunctional vibration actuator according to another embodiment of the present invention. In the case of this multi-function vibration actuator, compared with the structure of FIG. 2 described above, the basic structure is kept as it is, and instead of the annular plate-shaped yoke 10 made of a magnetic material having a high specific gravity of the magnetic circuit section, iron, tungsten alloy, or the like is used. The difference is that a weight 11 made of a non-magnetic material having a high specific gravity is fixed.
【００２８】図３に示す多機能振動アクチュエータの場
合も、従来構造の場合と同様に外部へ振動を伝播する機
能を有する以外、磁気回路部を成すヨーク１′の外周部
に配備された重り１１を高比重の磁性体材料から成るも
のとしているので、従来構造の他例で説明した非磁性体
材料から成る重りを用いた場合に比べ、格段に漏洩磁束
の発生を抑制することができ、特に鉄よりも高比重の磁
性体材料であるタングステン合金を用いた場合にはより
大きな振動を得ることができるが、従来構造の場合と同
等の振動の大きさを得るために磁気回路部の厚さ方向に
おける可動変位を小さくできるため、その分、アクチュ
エータ全体が小型化（薄型化）された構成となってい
る。In the case of the multifunctional vibration actuator shown in FIG. 3, the weight 11 provided on the outer peripheral portion of the yoke 1'which forms the magnetic circuit part is also provided, except that it has a function of propagating vibration to the outside as in the case of the conventional structure. Since it is made of a magnetic material having a high specific gravity, it is possible to remarkably suppress the generation of magnetic flux leakage, as compared with the case of using a weight made of a non-magnetic material described in another example of the conventional structure. Larger vibration can be obtained when using a tungsten alloy, which is a magnetic material having a higher specific gravity than iron, but the thickness of the magnetic circuit part is required to obtain the same magnitude of vibration as in the conventional structure. Since the movable displacement in the direction can be made small, the entire actuator is made smaller (thinner) accordingly.
【００２９】又、この図３に示す多機能振動アクチュエ
ータにおいても、ヨーク１′の外周部に配備された重り
１１に用いる高比重の磁性体材料を任意に選択選定すれ
ば、着信を知らせる振動モードの共振周波数及び振動の
大きさを容易に変更設定可能な構造とできる他、重り１
１の形状を磁気回路部の外周形状に応じて可変させるこ
とができ、例えばリング状，球状，平板状，カップ状，
円柱状，角柱状等の形状にすることができる。Also in the multifunctional vibration actuator shown in FIG. 3, if a magnetic material having a high specific gravity used for the weight 11 provided on the outer peripheral portion of the yoke 1'is arbitrarily selected and selected, a vibration mode for notifying an incoming call is obtained. The resonance frequency and the magnitude of vibration can be easily changed and set, and the weight 1
The shape of 1 can be changed according to the outer peripheral shape of the magnetic circuit part, for example, ring shape, spherical shape, flat plate shape, cup shape,
The shape can be cylindrical, prismatic, or the like.
【００３０】[0030]
【発明の効果】以上に述べた通り、本発明の多機能振動
アクチュエータによれば、機械振動系に主として寄与す
る磁気回路部を成すヨーク全体，ヨークの一部，又はヨ
ークの外周部に配備される重りを高比重の磁性体材料か
ら成る部材として置き換えることで可動部の磁気回路部
の質量を大きくすることにより、従来構造よりも漏洩磁
束の発生を抑制できると共に、大きな振動を得ることが
できるので、磁気回路部の厚さ方向における可動変位を
小さくできる分、アクチュエータ全体を小型化（薄型
化）された構成とすることができ、しかも携帯電話等の
移動体通信機器に搭載したときに漏洩磁束の発生による
使用上での問題が発生せずに有効に適用できるようにな
る。又、本発明の多機能振動アクチュエータの場合、ヨ
ーク全体，ヨークの一部，又は重りに用いる高比重の磁
性体材料を任意に選択選定することにより、着信を知ら
せる振動モードの共振周波数及び振動の大きさを容易に
変更設定可能な構造とできる他、これらのヨーク全体，
ヨークの一部，又は重りの形状を磁気回路部の外周形状
に応じて可変させ、リング状，球状，平板状，カップ
状，円柱状，角柱状等の形状に任意に設計することがで
きるため、製品を多様化させることが可能であり、それ
らの製造及び作製も容易になる。As described above, according to the multi-function vibration actuator of the present invention, the multi-function vibration actuator is arranged on the entire yoke, a part of the yoke, or the outer peripheral portion of the yoke which constitutes the magnetic circuit part mainly contributing to the mechanical vibration system. By increasing the mass of the magnetic circuit part of the movable part by replacing the weight with a member made of a magnetic material of high specific gravity, it is possible to suppress the generation of leakage magnetic flux and obtain large vibration as compared with the conventional structure. Since the movable displacement in the thickness direction of the magnetic circuit part can be reduced, the entire actuator can be made smaller (thinner), and leaks when it is mounted on a mobile communication device such as a mobile phone. It can be applied effectively without any problems in use due to the generation of magnetic flux. Further, in the case of the multifunctional vibration actuator of the present invention, the resonance frequency and vibration of the vibration mode for notifying an incoming call can be obtained by arbitrarily selecting and selecting the whole yoke, a part of the yoke, or a magnetic material having a high specific gravity used for the weight. In addition to a structure whose size can be easily changed and set, these yokes as a whole,
The shape of a part of the yoke or the weight can be changed according to the outer peripheral shape of the magnetic circuit part, and can be arbitrarily designed into a ring shape, a spherical shape, a flat plate shape, a cup shape, a cylindrical shape, a prismatic shape, or the like. It is possible to diversify products, and it is easy to manufacture and produce them.
【図１】本発明の一つの実施の形態に係る多機能振動ア
クチュエータの基本構成を示した側面方向での断面図で
ある。FIG. 1 is a side sectional view showing a basic configuration of a multifunctional vibration actuator according to an embodiment of the present invention.
【図２】本発明の他の実施の形態に係る多機能振動アク
チュエータの基本構成を示した側面方向での断面図であ
る。FIG. 2 is a side sectional view showing a basic configuration of a multifunctional vibration actuator according to another embodiment of the present invention.
【図３】本発明の別の実施の形態に係る多機能振動アク
チュエータの基本構成を示した側面方向での断面図であ
る。FIG. 3 is a side sectional view showing a basic configuration of a multifunctional vibration actuator according to another embodiment of the present invention.
１，１′，１０ ヨーク ２ 永久磁石 ３ プレート ４ サスペンション ５ コイル ６ 振動体 ７ 振動伝達部 ８，９ カバー １１ 重り 1,1 ', 10 yoke 2 permanent magnet 3 plates 4 suspension 5 coils 6 vibrating body 7 Vibration transmitter 8,9 cover 11 weights
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｈ０４Ｒ 9/02 Ｈ０４Ｒ 9/02 １０２Ｅ Ｆターム(参考） 5D012 AA01 BB04 BB05 BB08 EA03 FA08 FA10 GA04 5D107 AA03 AA05 AA13 CC08 CC10 DD03 DD12 FF07 FF09 FF10 5H633 BB02 BB03 GG03 GG06 GG09 HH02 HH03 HH05 HH09 HH14 HH24 HH25 JA03 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) H04R 9/02 H04R 9/02 102E F term (reference) 5D012 AA01 BB04 BB05 BB08 EA03 FA08 FA10 GA04 5D107 AA03 AA05 AA13 CC08 CC10 DD03 DD12 FF07 FF09 FF10 5H633 BB02 BB03 GG03 GG06 GG09 HH02 HH03 HH05 HH09 HH14 HH24 HH25 JA03
Claims (9)
回路部を該ヨークの局部で該磁気回路部外方の振動伝達
部に取り付けられたサスペンションにより柔軟に支持す
ると共に、該振動伝達部に該サスペンションとは離間さ
れて取り付けられた振動体にコイルが該磁気回路部の空
隙部分に入り込んで配置されるように固着された構造の
多機能振動アクチュエータにおいて、前記ヨークは、少
なくとも一部に高比重の磁性体材料を含んで成ることを
特徴とする多機能振動アクチュエータ。1. A magnetic circuit unit including a permanent magnet that is in contact with a yoke is flexibly supported by a suspension attached to a vibration transmitting unit outside the magnetic circuit unit at a local portion of the yoke, and the vibration transmitting unit is also provided. In a multi-function vibration actuator having a structure in which a coil is fixed to a vibrating body that is mounted separately from the suspension so as to be arranged so as to enter the void portion of the magnetic circuit section, the yoke is at least partially formed. A multifunctional vibration actuator comprising a magnetic material having a high specific gravity.
タにおいて、前記ヨークは、全体が一体的な部材又は複
数の部材が組み合わされて結合された結合部材から成る
ことを特徴とする多機能振動アクチュエータ。2. The multifunctional vibration actuator according to claim 1, wherein the yoke is made of an integral member or a combination member formed by combining a plurality of members. .
タにおいて、前記ヨークの前記一体的な部材又は前記結
合部材の少なくとも一部は、前記高比重の磁性体材料か
ら成ることを特徴とする多機能振動アクチュエータ。3. The multifunctional vibration actuator according to claim 2, wherein at least a part of the integral member or the coupling member of the yoke is made of the magnetic material having a high specific gravity. Vibration actuator.
タにおいて、前記ヨークは、前記高比重の磁性体材料と
して、鉄又はタングステン合金を用いて成ることを特徴
とする多機能振動アクチュエータ。4. The multifunctional vibration actuator according to claim 3, wherein the yoke is made of iron or a tungsten alloy as the magnetic material having a high specific gravity.
回路部を該ヨークの局部で該磁気回路部外方の振動伝達
部に取り付けられたサスペンションにより柔軟に支持す
ると共に、該振動伝達部に該サスペンションとは離間さ
れて取り付けられた振動体にコイルが該磁気回路部の空
隙部分に入り込んで配置されるように固着された構造の
多機能振動アクチュエータにおいて、前記ヨークの外周
部には磁性体材料から成る重りが固定されて配設された
ことを特徴とする多機能振動アクチュエータ。5. A magnetic circuit portion including a permanent magnet that is in contact with a yoke is flexibly supported by a suspension attached to a vibration transmitting portion outside the magnetic circuit portion at a local portion of the yoke, and the vibration transmitting portion is also provided. In a multifunctional vibration actuator having a structure in which a coil is fixed to a vibrating body that is mounted separately from the suspension so as to be inserted into the void portion of the magnetic circuit section, a magnetic field is provided on the outer peripheral portion of the yoke. A multifunctional vibration actuator in which a weight made of a body material is fixed and arranged.
タにおいて、前記重りは、前記磁性体材料として高比重
のものから成ることを特徴とする多機能振動アクチュエ
ータ。6. The multifunctional vibration actuator according to claim 5, wherein the weight is made of a material having a high specific gravity as the magnetic material.
タにおいて、前記重りは、前記高比重の磁性体材料とし
て、鉄又はタングステン合金を用いて成ることを特徴と
する多機能振動アクチュエータ。7. The multifunctional vibration actuator according to claim 6, wherein the weight is made of iron or tungsten alloy as the magnetic material having a high specific gravity.
能振動アクチュエータにおいて、前記ヨークの全体，前
記ヨークの一部，又は前記重りに用いる前記高比重の磁
性体材料を任意に選択選定することにより、着信を知ら
せる振動モードの共振周波数及び振動の大きさを変更設
定可能な構造であることを特徴とする多機能振動アクチ
ュエータ。8. The multifunctional vibration actuator according to claim 1, wherein the high specific gravity magnetic material used for the entire yoke, a part of the yoke, or the weight is arbitrarily used. A multifunctional vibration actuator having a structure capable of changing and setting the resonance frequency and vibration magnitude of a vibration mode for notifying an incoming call by selecting and selecting.
能振動アクチュエータにおいて、前記ヨークの全体，前
記ヨークの一部，又は前記重りは、前記磁気回路部の外
周形状に応じて少なくともリング状，球状，平板状，カ
ップ状，円柱状，及び角柱状のうちの選定された一つの
形状を呈していることを特徴とする多機能振動アクチュ
エータ。9. The multifunctional vibration actuator according to claim 1, wherein the entire yoke, a part of the yoke, or the weight corresponds to an outer peripheral shape of the magnetic circuit unit. A multifunctional vibration actuator having at least one shape selected from a ring shape, a spherical shape, a flat plate shape, a cup shape, a cylindrical shape, and a prismatic shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002062286A JP2003251278A (en) | 2002-03-07 | 2002-03-07 | Multifunction vibration actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002062286A JP2003251278A (en) | 2002-03-07 | 2002-03-07 | Multifunction vibration actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003251278A true JP2003251278A (en) | 2003-09-09 |
Family
ID=28670584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002062286A Withdrawn JP2003251278A (en) | 2002-03-07 | 2002-03-07 | Multifunction vibration actuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003251278A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006001436A1 (en) * | 2004-06-29 | 2006-01-05 | Namiki Seimitsu Houseki Kabusikikaisha | Vibrating linear actuator |
| JP2006333273A (en) * | 2005-05-30 | 2006-12-07 | Citizen Electronics Co Ltd | Vibrating body |
| KR100661921B1 (en) | 2005-04-15 | 2006-12-27 | 삼성전기주식회사 | Vibration-Sound Generating Device and Yoke thereof |
| JP2007274113A (en) * | 2006-03-30 | 2007-10-18 | Nec Corp | Underwater sound wave transmitter |
| EP1970129A1 (en) * | 2005-12-13 | 2008-09-17 | Namiki Seimitu Houseki Kabushiki Kaisha | Thin multi-function vibration actuator |
| US7557474B2 (en) * | 2006-01-19 | 2009-07-07 | Citizen Electronics Co., Ltd. | Electromagnetic exciter |
| JP2010021609A (en) * | 2008-07-08 | 2010-01-28 | Namiki Precision Jewel Co Ltd | Multi-functional vibrating actuator |
| WO2012018171A1 (en) * | 2010-08-06 | 2012-02-09 | 주식회사 비에스이 | Linear vibration motor |
| CN110933570A (en) * | 2019-12-13 | 2020-03-27 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| JP2021136783A (en) * | 2020-02-27 | 2021-09-13 | 日本電産サンキョー株式会社 | Actuator |
-
2002
- 2002-03-07 JP JP2002062286A patent/JP2003251278A/en not_active Withdrawn
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006001436A1 (en) * | 2004-06-29 | 2006-01-05 | Namiki Seimitsu Houseki Kabusikikaisha | Vibrating linear actuator |
| KR100661921B1 (en) | 2005-04-15 | 2006-12-27 | 삼성전기주식회사 | Vibration-Sound Generating Device and Yoke thereof |
| US7778436B2 (en) | 2005-04-15 | 2010-08-17 | Samsung Electronics Co., Ltd | Vibration-sound generating device and yoke thereof |
| US7576462B2 (en) | 2005-05-30 | 2009-08-18 | Citizen Electronics Co., Ltd. | Electromagnetic exciter |
| JP2006333273A (en) * | 2005-05-30 | 2006-12-07 | Citizen Electronics Co Ltd | Vibrating body |
| JP4592088B2 (en) * | 2005-05-30 | 2010-12-01 | シチズン電子株式会社 | Vibrator |
| EP1970129A1 (en) * | 2005-12-13 | 2008-09-17 | Namiki Seimitu Houseki Kabushiki Kaisha | Thin multi-function vibration actuator |
| EP1970129A4 (en) * | 2005-12-13 | 2012-03-14 | Namiki Seimitu Houseki Kabushiki Kaisha | Thin multi-function vibration actuator |
| US7557474B2 (en) * | 2006-01-19 | 2009-07-07 | Citizen Electronics Co., Ltd. | Electromagnetic exciter |
| JP2007274113A (en) * | 2006-03-30 | 2007-10-18 | Nec Corp | Underwater sound wave transmitter |
| JP2010021609A (en) * | 2008-07-08 | 2010-01-28 | Namiki Precision Jewel Co Ltd | Multi-functional vibrating actuator |
| WO2012018171A1 (en) * | 2010-08-06 | 2012-02-09 | 주식회사 비에스이 | Linear vibration motor |
| CN110933570A (en) * | 2019-12-13 | 2020-03-27 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| WO2021115031A1 (en) * | 2019-12-13 | 2021-06-17 | 歌尔股份有限公司 | Sound production apparatus and electronic device |
| CN110933570B (en) * | 2019-12-13 | 2021-11-16 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| JP2021136783A (en) * | 2020-02-27 | 2021-09-13 | 日本電産サンキョー株式会社 | Actuator |
| JP7410747B2 (en) | 2020-02-27 | 2024-01-10 | ニデックインスツルメンツ株式会社 | actuator |
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