JP2009208003A - Coin type vibrating motor, method for manufacturing the same, and portable telephone - Google Patents

Coin type vibrating motor, method for manufacturing the same, and portable telephone Download PDF

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JP2009208003A
JP2009208003A JP2008053743A JP2008053743A JP2009208003A JP 2009208003 A JP2009208003 A JP 2009208003A JP 2008053743 A JP2008053743 A JP 2008053743A JP 2008053743 A JP2008053743 A JP 2008053743A JP 2009208003 A JP2009208003 A JP 2009208003A
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coil
longitudinal vibration
vibrator
vibration
vibration coil
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Takuma Tsukasaki
琢磨 塚崎
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NEC Corp
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NEC Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To achieve improvement of the vibration degree in a thickness (vertical) direction which a coin-type vibrating motor is not good at. <P>SOLUTION: A coin-type vibrating motor rotates a vibrator by the electromagnetic action on a magnet of the vibrator by magnetization of a rotating coil installed in the inside of the case to cause vibration by a weight of the rotating vibrator. The motor is equipped with: an upper side and a lower side vertically vibrating coils 103A and 103B installed in the upper side and a lower side of the case in the surrounding of a rotary shaft of a vibrator; a vertically vibrating magnet 107 installed in the vibrator while facing to the upper side and the lower side vertically vibrating coils; and a driver IC112 which inverts the polarity of magnetic fluxes generated between the upper side and the lower side vertically vibrating coils by alternating current signals at constant cycles, which are generated by diverging the inputs from two terminals of a positive pole and a negative pole to the rotating coil toward the upper side and the lower side vertically vibrating coils and switching the inputs to the upper side and the lower side vertically vibrating coils, and thus makes the electromagnetic forces by the upper side and the lower side vertically vibrating coils cause mutually inverse actions on the vertically vibrating magnet. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は携帯電話機向けのコイン型振動モータに関する。特に、本発明は、縦方向の振動力を改善するコイン型振動モータ、その製造方法及び携帯電話機に関する。   The present invention relates to a coin-type vibration motor for a mobile phone. In particular, the present invention relates to a coin-type vibration motor that improves longitudinal vibration force, a method for manufacturing the same, and a mobile phone.

近年、携帯電話機に代表される携帯機器では市場のニーズ、ＬＳＩ（大規模集積回路）の高集積化に伴い、携帯電話機等の端末の薄型化が進んでいる。
携帯電話機ではこれまで円筒型振動モータが多く用いられてきたが、端末の薄型化によって、回転部分のクリアランス確保が困難になり、薄型のコイン型振動モータが使われるようになってきた。以下に具体的に説明する。 2. Description of the Related Art In recent years, in mobile devices typified by mobile phones, terminals such as mobile phones have been made thinner due to market needs and higher integration of LSIs (Large Scale Integrated Circuits).
In the cellular phone, a cylindrical vibration motor has been often used so far. However, due to the thinning of the terminal, it becomes difficult to secure the clearance of the rotating portion, and a thin coin-shaped vibration motor has been used. This will be specifically described below.

図４は本発明の前提となるコイン型振動モータの外観図である。なお、全図を通して同一の構成要素には同一の符号、記号を付する。
本図（ａ）はコイン型振動モータ１００の上面側の外観を示し、本図（ｂ）はコイン型振動モータ１００の側面側の外観を示す。本図に示すように、コイン型振動モータ１００の外観はケース１０１及び端子部１０２で構成される。 FIG. 4 is an external view of a coin-type vibration motor as a premise of the present invention. In addition, the same code | symbol is attached | subjected to the same component throughout a figure.
This figure (a) shows the appearance of the upper surface side of the coin-type vibration motor 100, and this figure (b) shows the appearance of the side surface side of the coin-type vibration motor 100. As shown in the figure, the external appearance of the coin-type vibration motor 100 includes a case 101 and a terminal portion 102.

ケース１０１はコイン型のケースであり、端子部１０２はバネタイプ又はリードタイプ等の接続端子であり、選択可能である。
図５は図４におけるコイン型振動モータ１００の内部の概略構成を示す断面図である。本図に示すように、コイン型振動モータ１００は図４で説明したケース１０１、端子部１０２の構成に加え、コイン型振動モータ１００の内部は回転用コイル１０４、回転用マグネット１０５、分銅１０６、シャフト１０９、固定板１１０、ベアリング１１１、ドライバＩＣ（集積回路）１１２及び振動子１２０で構成される。 The case 101 is a coin type case, and the terminal portion 102 is a connection terminal such as a spring type or a lead type, and can be selected.
FIG. 5 is a cross-sectional view showing a schematic configuration inside the coin-type vibration motor 100 in FIG. As shown in this figure, in addition to the configuration of the case 101 and the terminal portion 102 described in FIG. 4, the coin-type vibration motor 100 includes a rotation coil 104, a rotation magnet 105, a weight 106, The shaft 109, the fixed plate 110, the bearing 111, the driver IC (integrated circuit) 112, and the vibrator 120 are configured.

ケース１０１の上面、下面の中央部に回転軸となるシャフト１０９が設けられる。シャフト１０９と回転形の振動子１２０の接合部にはベアリング１１１が装備され、振動子１２０は固定板１１０により上下から押さえられる。すなわち、固定板１１０のクリアランスは極めて小さく振動子１２０が上下に動かないように設計されている。
回転用コイル１０４はコイルを励磁することで振動子１２０に装備した回転用マグネット１０５と反発又は引き合うことで振動子１２０をシャフト１０９の周りで回転させる。 A shaft 109 serving as a rotation axis is provided at the center of the upper and lower surfaces of the case 101. A bearing 111 is provided at the joint between the shaft 109 and the rotary vibrator 120, and the vibrator 120 is pressed from above and below by the fixed plate 110. That is, the clearance of the fixed plate 110 is extremely small and the vibrator 120 is designed not to move up and down.
The rotating coil 104 repels or attracts the rotating magnet 105 mounted on the vibrator 120 by exciting the coil to rotate the vibrator 120 around the shaft 109.

振動子１２０には分銅１０６が設けられ、分銅１０６の回転により、ケース１０１の横方向の振動特性が優れている。
しかしながら、コイン型振動モータ１００を携帯電話機に搭載する場合、スペースの関係上、携帯電話機の表面に対して水平に配置するしかない。
このため、コイン型振動モータ１００は携帯電話機の表面に対して水平に回転することから、円筒型に比べ、振動量が少ないという弱点もある。 The vibrator 120 is provided with a weight 106, and the lateral vibration characteristics of the case 101 are excellent due to the rotation of the weight 106.
However, when the coin-type vibration motor 100 is mounted on a mobile phone, there is no choice but to place it horizontally with respect to the surface of the mobile phone due to space limitations.
For this reason, since the coin-type vibration motor 100 rotates horizontally with respect to the surface of the mobile phone, there is a weak point that the amount of vibration is smaller than that of the cylindrical type.

換言すれば、携帯電話機への着信時の振動が小さ過ぎて着信に気が付かないというケースも出てくるので、携帯電話機に搭載するモータとして合理的とはいえない。
したがって、従来のコイン型振動モータが不得意としてきた厚み（縦）方向の振動量改善を実現することが課題となる。
上記のコイン型振動モータに関連して以下の特許文献がある。 In other words, there are cases where the vibration at the time of incoming call to the mobile phone is too small to notice the incoming call, so it is not reasonable as a motor mounted on the mobile phone.
Therefore, it becomes a problem to realize an improvement in vibration amount in the thickness (vertical) direction, which has been unsatisfactory with conventional coin-type vibration motors.
The following patent documents are related to the above-described coin-type vibration motor.

振動モーターの小型化を達成しながら、偏心質量の増加を通じた振動発生力を増加させると共に、組立性を向上させることを目的とし、内部空間を形成する上部及び下部ケースと、前記上部及び下部ケース内のシャフトと、前記シャフトに支持され、複数の巻線コイル、重量体及び整流子基板を含む回転子と、前記回転子に対向し、前記上部ケース内に位置するマグネットと、前記整流子基板と選択的に接続され、前記下部ケース内に位置するブラシとを含むコインタイプ振動モーターに関するものがある（例えば、特許文献１参照）。   The upper and lower cases for forming an internal space, and the upper and lower cases for the purpose of increasing the vibration generating force through the increase of the eccentric mass and improving the assembling property while achieving the downsizing of the vibration motor An inner shaft, a rotor supported by the shaft and including a plurality of winding coils, a weight body and a commutator substrate, a magnet facing the rotor and positioned in the upper case, and the commutator substrate And a coin type vibration motor including a brush positioned in the lower case (see, for example, Patent Document 1).

しかしながら、上記特許文献１では、偏心質量の増加を通じた振動発生力を増加させるが、コイン型振動モータが不得意としてきた厚み（縦）方向の振動量改善を実現するものではない。
振動方向または振動周波数が異なる２以上の振動発生器を積層・モジュール化して多様なモードの振動を発生させる装置を提供するため、第１コイル部と、第１磁界部を具備して、上記第１コイル部に形成された電界と上記第１磁界部に形成された磁場の相互作用により一定の方向へ振動を発生させる第１振動発生器；及び上記第１振動発生器の上部に垂直方向へ順次に固定配置され、第２コイル部と、第２磁界部を各々具備し、上記第２コイル部に形成された電界と上記第２磁界部に形成された磁場の相互作用によって一定の方向へ振動を発生させる第２振動発生器;を含み、上記第２振動発生器は上記第１振動発生器の振動方向と異なる方向の振動を発生させるか、上記第１振動発生器の周波数と異なる周波数の振動を発生させることにより多様なモードの振動を発生させるものもある（例えば、特許文献２参照）。 However, in the above-mentioned Patent Document 1, the vibration generating force is increased by increasing the eccentric mass, but it does not realize the improvement of the vibration amount in the thickness (vertical) direction, which has been unsatisfactory for the coin-type vibration motor.
In order to provide a device for generating vibrations of various modes by laminating and modularizing two or more vibration generators having different vibration directions or vibration frequencies, the apparatus includes a first coil unit and a first magnetic field unit. A first vibration generator for generating a vibration in a fixed direction by an interaction between an electric field formed in one coil part and a magnetic field formed in the first magnetic field part; and vertically above the first vibration generator; Sequentially fixedly arranged, each having a second coil part and a second magnetic field part, and in a certain direction due to the interaction between the electric field formed in the second coil part and the magnetic field formed in the second magnetic field part A second vibration generator for generating vibration; wherein the second vibration generator generates vibration in a direction different from the vibration direction of the first vibration generator or a frequency different from the frequency of the first vibration generator. By generating vibration Some of them generate vibrations of various modes (see, for example, Patent Document 2).

しかしながら、上記特許文献２では、第１振動発生器にコインタイプ振動モータを一部として使用するものであり、コイン型振動モータが不得意としてきた厚み（縦）方向の振動量改善を実現するものではない。
小型な振動モータを搭載せざるを得ない携帯無線通信装置において、振動の発生方向が該装置の全方向（上下、前後、左右）にほぼ均一になるようにして振動体感時における振動加速度の劣る方向がないようにするため、無音報知手段として径方向に最大振幅を発生させるようにした小型振動モータを内蔵してなる携帯無線通信装置における小型振動モータの搭載構造であって該携帯無線通信装置の振動体感時における振動加速度の劣る方向がないようにするために前記小型振動モータを該携帯無線通信装置の外箱に対して斜めに配置させ、小型振動モータとしては扁平型や筒型が用いられるものもある（例えば、特許文献３参照）。 However, in the above-mentioned Patent Document 2, a coin type vibration motor is used as a part of the first vibration generator, and the amount of vibration in the thickness (vertical) direction, which has been poor at the coin type vibration motor, is realized. is not.
In a portable wireless communication device that must be equipped with a small vibration motor, the vibration acceleration is inferior when the vibration is felt so that the direction of vibration generation is almost uniform in all directions (vertical, front-rear, left-right) of the device. A portable vibration communication device mounting structure for a portable wireless communication device having a built-in small vibration motor that generates a maximum amplitude in the radial direction as a silent notification means so that there is no direction, and the portable wireless communication device The small vibration motor is disposed obliquely with respect to the outer case of the portable wireless communication device so that there is no direction in which the vibration acceleration is inferior when the vibration is felt, and a flat type or a cylindrical type is used as the small vibration motor. Some of them are disclosed in, for example, Patent Document 3.

しかしながら、上記特許文献３では、小型振動モータとして扁平型振動モータを内蔵してなる携帯無線通信装置であるが、コイン型振動モータが不得意としてきた厚み（縦）方向の振動量改善を実現するものではない。
装置の厚み方向の振動を十分に得ることができ、さらに振動加速度の劣る方向がないようにするため、無音報知手段として径方向に最大振幅を有するもので出力軸がハウジングから突き出ないようにした扁平型振動モータを内蔵してなる携帯無線通信装置における扁平型振動モータの搭載構造において、該扁平型振動モータを、全方向に良好な振動を発生させるために該装置の厚み方向に対して斜めになるように該装置の内部に取り付けた携帯無線通信装置における扁平型振動モータの搭載構造もある（例えば、特許文献４参照）。 However, in the above-mentioned Patent Document 3, although it is a portable wireless communication device including a flat vibration motor as a small vibration motor, the amount of vibration in the thickness (vertical) direction, which has been unsatisfactory by the coin vibration motor, is realized. It is not a thing.
In order to obtain sufficient vibration in the thickness direction of the device and to prevent the direction of vibration acceleration from being inferior, the silent shaft has a maximum amplitude in the radial direction so that the output shaft does not protrude from the housing. In a mounting structure of a flat vibration motor in a portable wireless communication device incorporating a flat vibration motor, the flat vibration motor is inclined with respect to the thickness direction of the device in order to generate good vibration in all directions. There is also a mounting structure of a flat vibration motor in a portable wireless communication device attached to the inside of the device (see, for example, Patent Document 4).

しかしながら、上記特許文献４では、扁平型振動モータを内蔵してなる携帯無線通信装置であるが、コイン型振動モータが不得意としてきた厚み（縦）方向の振動量改善を実現するものではない。   However, in the above-mentioned Patent Document 4, although it is a portable wireless communication device having a built-in flat vibration motor, it does not realize improvement in vibration amount in the thickness (vertical) direction, which has been unsatisfactory for coin-type vibration motors.

特開２００３−２８５００９号公報JP 2003-285209 A 特開２００６−０８８１４５号公報JP 2006-088145 A 特開平１１−２５２８５５号公報Japanese Patent Laid-Open No. 11-252855 特許第３３１８１７８号公報Japanese Patent No. 3318178

したがって、本発明は上記問題点に鑑みて、厚み（縦）方向の振動量改善を実現するコイン型振動モータ、その製造方法及び携帯電話機を提供することを目的とする。   Therefore, in view of the above-described problems, an object of the present invention is to provide a coin-type vibration motor, a manufacturing method thereof, and a mobile phone that can improve the vibration amount in the thickness (vertical) direction.

本発明は前記問題点を解決するために、ケース内側に配される回転用コイルの励磁による振動子のマグネットへの電磁力の作用で振動子を回転させ、回転する振動子の分銅で振動を起こすコイン型振動モータにおいて、振動子の回転軸の周りでケースの上側、下側に配置される上側の縦振動用コイル及び下側の縦振動用コイルと、上側の前記縦振動用コイル及び下側の前記縦振動用コイルに対向して振動子に配置される縦振動用マグネットと、正極、負極の２端子から回転用コイルへの入力を上側の前記縦振動用コイルと下側の前記縦振動用コイルに向けて分岐して上側の前記縦振動用コイルと下側の前記縦振動用コイルへの入力をスイッチングした一定の周期の交流信号により上側の前記縦振動用コイルと下側の前記縦振動用コイルに生じる磁束の極性を反転し、前記縦振動用マグネットに対して上側の前記縦振動用コイルと下側の前記縦振動用コイルによる電磁力を互いに逆作用とするドライバＩＣとを備えることを特徴とするコイン型振動モータを提供する。   In order to solve the above-mentioned problems, the present invention rotates the vibrator by the action of electromagnetic force applied to the magnet of the vibrator by excitation of the rotating coil disposed inside the case, and vibrates with the weight of the rotating vibrator. In a coin-type vibration motor that wakes up, an upper longitudinal vibration coil and a lower longitudinal vibration coil that are disposed on the upper and lower sides of the case around the rotation axis of the vibrator, and the upper longitudinal vibration coil and the lower The vertical vibration magnet disposed on the vibrator facing the longitudinal vibration coil on the side, and the input from the positive and negative terminals to the rotation coil on the upper longitudinal vibration coil and the lower vertical vibration coil The upper longitudinal vibration coil and the lower longitudinal vibration coil are branched toward the vibration coil by an alternating current signal having a constant period that switches the input to the upper longitudinal vibration coil and the lower longitudinal vibration coil. Occurs in the longitudinal vibration coil And a driver IC that reverses the polarity of the magnetic flux and reverses the electromagnetic force generated by the upper longitudinal vibration coil and the lower longitudinal vibration coil with respect to the longitudinal vibration magnet. A coin-type vibration motor is provided.

さらに、前記回転用コイルと前記上側の縦振動用コイル及び下側の縦振動用コイルとの間に防磁壁を設け、前記防磁壁は前記回転用コイルと前記上側の縦振動用コイル及び下側の縦振動用コイルにより生じる磁束同士の干渉を防ぐ。
さらに、振動子の回転軸の上下に固定板を設け、前記固定板と振動子の間のクリアランスにより振動子が上下動し、前記固定板は前記振動子の上下動のストッパの役目を果す。 Further, a magnetic shielding wall is provided between the rotating coil and the upper longitudinal vibration coil and the lower longitudinal vibration coil, and the magnetic shielding wall includes the rotating coil, the upper longitudinal vibration coil, and the lower coil. This prevents interference between magnetic fluxes generated by the vertical vibration coil.
Furthermore, a fixed plate is provided above and below the rotating shaft of the vibrator, and the vibrator moves up and down by the clearance between the fixed plate and the vibrator, and the fixed plate serves as a stopper for the vertical movement of the vibrator.

さらに、前記固定板では、振動子と接する部分にワッシャ、ワッシャの下にはゴム製の樹脂材が設けられる。
さらに、本発明は、ケース内側に配される回転用コイルの励磁による振動子のマグネットへの電磁力の作用で振動子を回転させ、回転する振動子の分銅で振動を起こすコイン型振動モータの製造方法において、振動子の回転軸の周りでケースの上側、下側に上側の縦振動用コイル及び下側の縦振動用コイルをそれぞれ配置する工程と、上側の前記縦振動用コイル及び下側の前記縦振動用コイルに対向して振動子に縦振動用マグネットを配置する工程と、正極、負極の２端子から回転用コイルへの入力を上側の前記縦振動用コイルと下側の前記縦振動用コイルに向けて分岐して上側の前記縦振動用コイルと下側の前記縦振動用コイルへの入力をスイッチングした一定の周期の交流信号により上側の前記縦振動用コイルと下側の前記縦振動用コイルに生じる磁束の極性を反転し、前記縦振動用マグネットに対して上側の前記縦振動用コイルと下側の前記縦振動用コイルによる電磁力を互いに逆作用とするドライバＩＣと設ける工程とを備えることを特徴とするコイン型振動モータの製造方法を提供する。 Further, in the fixing plate, a washer is provided at a portion in contact with the vibrator, and a rubber resin material is provided below the washer.
Furthermore, the present invention provides a coin-type vibration motor that rotates a vibrator by the action of electromagnetic force applied to the magnet of the vibrator by excitation of a rotating coil arranged inside the case and generates vibration with a weight of the rotating vibrator. In the manufacturing method, an upper longitudinal vibration coil and a lower longitudinal vibration coil are respectively disposed on the upper and lower sides of the case around the rotation axis of the vibrator, and the upper longitudinal vibration coil and the lower side A step of disposing a longitudinal vibration magnet on a vibrator facing the longitudinal vibration coil, and an input from the two terminals of the positive electrode and the negative electrode to the rotation coil on the upper longitudinal vibration coil and the lower longitudinal vibration coil. The upper longitudinal vibration coil and the lower longitudinal vibration coil are branched toward the vibration coil by an alternating current signal having a constant period that switches the input to the upper longitudinal vibration coil and the lower longitudinal vibration coil. Carp for longitudinal vibration And a step of providing a driver IC that reverses the electromagnetic force generated by the upper longitudinal vibration coil and the lower longitudinal vibration coil with respect to the longitudinal vibration magnet. A method for manufacturing a coin-type vibration motor is provided.

さらに、本発明は、ケース内側に配される回転用コイルの励磁による振動子のマグネットへの電磁力の作用で振動子を回転させ、回転する振動子の分銅で振動を起こすコイン型振動モータを内蔵する携帯電話機において、振動子の回転軸の周りでケースの上側、下側に配置される上側の前記縦振動用コイル及び下側の前記縦振動用コイルと、上側の前記縦振動用コイル及び下側の縦振動用コイルに対向して振動子に配置される縦振動用マグネットと、正極、負極の２端子から回転用コイルへの入力を上側の前記縦振動用コイルと下側の前記縦振動用コイルに向けて分岐して上側の前記縦振動用コイルと下側の前記縦振動用コイルへの入力をスイッチングした一定の周期の交流信号により上側の前記縦振動用コイルと下側の前記縦振動用コイルに生じる磁束の極性を反転し、前記縦振動用マグネットに対して上側の前記縦振動用コイルと下側の前記縦振動用コイルによる電磁力を互いに逆作用とするドライバＩＣとを備えることを特徴とする、コイン型振動モータを内蔵する携帯電話機を提供する。   Further, the present invention provides a coin-type vibration motor that rotates a vibrator by the action of electromagnetic force applied to the magnet of the vibrator by excitation of a rotating coil arranged inside the case and generates vibration with a weight of the rotating vibrator. In the built-in mobile phone, the upper longitudinal vibration coil and the lower longitudinal vibration coil arranged on the upper and lower sides of the case around the rotation axis of the vibrator, the upper longitudinal vibration coil, The longitudinal vibration magnet disposed on the vibrator facing the lower longitudinal vibration coil, and the input from the positive and negative terminals to the rotation coil are input to the upper longitudinal vibration coil and the lower longitudinal vibration coil. The upper longitudinal vibration coil and the lower longitudinal vibration coil are branched toward the vibration coil by an alternating current signal having a constant period that switches the input to the upper longitudinal vibration coil and the lower longitudinal vibration coil. Coil for longitudinal vibration And a driver IC that reverses the polarity of the generated magnetic flux and reverses the electromagnetic force generated by the upper longitudinal vibration coil and the lower longitudinal vibration coil with respect to the longitudinal vibration magnet. A mobile phone incorporating a coin-type vibration motor is provided.

以上説明したように、本発明によれば、振動子の回転軸の周りでケースの上側、下側に配置される上側の縦振動用コイル及び下側の縦振動用コイルと、上側の縦振動用コイル及び下側の縦振動用コイルに対向して振動子に配置される縦振動用マグネットと、正極、負極の２端子から回転用コイルへの入力を上側の縦振動用コイルと下側の縦振動用コイルに向けて分岐して上側の縦振動用コイルと下側の縦振動用コイルへの入力をスイッチングした一定の周期の交流信号により上側の縦振動用コイルと下側の縦振動用コイルに生じる磁束の極性を反転し、縦振動用マグネットに対して上側の縦振動用コイルと下側の縦振動用コイルによる電磁力を互いに逆作用とするドライバＩＣとを備えるようにしたので、縦方向の振動力を増やすため、上下動用のマグネットを振動子に、上下駆動用にコイルをモータケース内側に配置し、電磁力の逆作用により、機械的に縦方向の振動を起こし、縦横両方向の振動を実現することにより、従来のコイン型振動モータが不得意としてきた厚み（縦）方向の振動量改善を実現することが可能となり、薄型化した携帯電話機の着信の確認が容易になる。   As described above, according to the present invention, the upper longitudinal vibration coil and the lower longitudinal vibration coil disposed on the upper and lower sides of the case around the rotation axis of the vibrator, and the upper longitudinal vibration. Input to the rotating coil from the two terminals of the positive electrode and the negative electrode on the upper vertical vibration coil and the lower side The upper longitudinal vibration coil and the lower longitudinal vibration are separated by an AC signal having a fixed period that branches to the longitudinal vibration coil and switches the input to the upper longitudinal vibration coil and the lower longitudinal vibration coil. Since the polarity of the magnetic flux generated in the coil is reversed, and the driver IC that reverses the electromagnetic force generated by the upper longitudinal vibration coil and the lower longitudinal vibration coil with respect to the longitudinal vibration magnet is provided. To increase the vertical vibration force, up and down By arranging the magnet for the vibrator and the coil for driving up and down inside the motor case, the reverse action of electromagnetic force causes mechanical vibration in the vertical direction, realizing both vertical and horizontal vibration. It is possible to improve the amount of vibration in the thickness (longitudinal) direction, which has been unsatisfactory with coin-type vibration motors, and it is easy to check incoming calls on thin mobile phones.

以下、本発明の実施の形態について図面を参照して説明する。
図１は本発明に係るコイン型振動モータ１００の内部の概略構成を示す断面図であり、図２は図１のコイン型振動モータ１００の振動子１２０の上側位置の状態に対して下側位置の状態を示す断面図である。図１、２に示すコイン型振動モータ１００は携帯電話機に使用され、図４と比較して、コイン型振動モータ１００には、縦振動用コイル１０３、縦振動用マグネット１０７及び防磁壁１０８が追加して設けられる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing a schematic configuration of the inside of a coin-type vibration motor 100 according to the present invention, and FIG. 2 is a lower position relative to the state of the upper position of the vibrator 120 of the coin-type vibration motor 100 of FIG. It is sectional drawing which shows this state. The coin-type vibration motor 100 shown in FIGS. 1 and 2 is used in a mobile phone. Compared with FIG. 4, the coin-type vibration motor 100 is additionally provided with a longitudinal vibration coil 103, a longitudinal vibration magnet 107, and a magnetic shielding wall 108. Provided.

上側の縦振動用コイル１０３Ａ、下側の縦振動用コイル１０３Ｂはシャフト１０９の周辺にケース１０１の上側、下側にそれぞれ配置される。
縦振動用マグネット１０７は振動子１２０に上側の縦振動用コイル１０３Ａ、下側の縦振動用コイル１０３Ｂに対向して装備され、縦振動用マグネット１０７の磁極ＮＳの向きは振動子１２０の厚さ方向である。 The upper longitudinal vibration coil 103 </ b> A and the lower longitudinal vibration coil 103 </ b> B are disposed around the shaft 109 on the upper and lower sides of the case 101, respectively.
The longitudinal vibration magnet 107 is mounted on the vibrator 120 so as to face the upper longitudinal vibration coil 103 </ b> A and the lower longitudinal vibration coil 103 </ b> B. The direction of the magnetic pole NS of the longitudinal vibration magnet 107 depends on the thickness of the vibrator 120. Direction.

上側の縦振動用コイル１０３Ａ、下側の縦振動用コイル１０３Ｂは励磁されることで縦振動用マグネット１０７と反発又は引き合う電磁力の逆作用が起こる。
上側の縦振動用コイル１０３Ａ、下側の縦振動用コイル１０３Ｂと縦振動用マグネット１０７とは電磁力の逆作用により、機械的に縦方向に振動子１２０を上下動させ、縦方向の振動を増やす。 The upper longitudinal vibration coil 103 </ b> A and the lower longitudinal vibration coil 103 </ b> B are excited to cause a reverse action of electromagnetic force that repels or attracts the longitudinal vibration magnet 107.
The upper longitudinal vibration coil 103A, the lower longitudinal vibration coil 103B, and the longitudinal vibration magnet 107 mechanically move the vibrator 120 up and down in the vertical direction by the reverse action of the electromagnetic force, thereby causing vibration in the vertical direction. increase.

上側の縦振動用コイル１０３Ａ、下側の縦振動用コイル１０３Ｂと縦振動用マグネット１０７は、回転用コイル１０４、回転用マグネット１０５と共に、縦横両方向の振動を実現可能にする。
防磁壁１０８は、縦振動用コイル１０３と回転用コイル１０４の間に位置し、縦振動用コイル１０３と回転用コイル１０４から生じる磁束同士の干渉を防ぐ。 The upper longitudinal vibration coil 103 </ b> A, the lower longitudinal vibration coil 103 </ b> B, and the longitudinal vibration magnet 107, together with the rotation coil 104 and the rotation magnet 105, can realize both longitudinal and lateral vibrations.
The magnetic shielding wall 108 is located between the longitudinal vibration coil 103 and the rotation coil 104 and prevents interference between magnetic fluxes generated from the longitudinal vibration coil 103 and the rotation coil 104.

固定板１１０と振動子１２０の間には僅かなクリアランスが設けられ、このクリアランスにより振動子１２０は自由な上下動を可能にし、縦方向の振動を確保する。
さらに、固定板１１０は、振動子１２０の上下動のストッパの役目を果し、振動子１２０と接する部分にワッシャ、その下には薄いゴム製の樹脂材を付けて構成し、さらに、振動子１２０との衝突による磨耗を緩和する。 A slight clearance is provided between the fixed plate 110 and the vibrator 120, and this clearance enables the vibrator 120 to freely move in the vertical direction and ensure vertical vibration.
Further, the fixed plate 110 serves as a stopper for the vertical movement of the vibrator 120, and is configured by attaching a washer to a portion in contact with the vibrator 120 and a thin rubber resin material under the washer. Reducing wear due to collision with 120.

ドライバＩＣ１１２は、ケース１０１の上面側の縦振動用コイル１０３が励磁して振動子１２０の縦振動用マグネット１０７と引き合うときには、下面の縦振動用コイル１０３が振動子１２０の縦振動用マグネット１０７と反発し、逆に、上面の縦振動用コイル１０３が振動子１２０の縦振動用マグネット１０７と反発し合うときは、下面の縦振動用コイル１０３が振動子１２０の縦振動用マグネット１０７と引き合うように信号を制御する。   When the driver IC 112 attracts the longitudinal vibration coil 103 on the upper surface side of the case 101 and attracts it to the longitudinal vibration magnet 107 of the vibrator 120, the lower vibration coil 103 is connected to the longitudinal vibration magnet 107 of the vibrator 120. In contrast, when the longitudinal vibration coil 103 on the upper surface repels the longitudinal vibration magnet 107 of the vibrator 120, the lower surface longitudinal vibration coil 103 attracts the longitudinal vibration magnet 107 of the vibrator 120. To control the signal.

図２は図１の状態からの変移を表し、振動子１２０はシャフト１０９の周りを回転しながら、ケース１０１の上側の縦振動用コイル１０３Ａの励磁により引き寄せられ、且つ、ケース１０１の下側の縦振動用コイル１０３Ｂの励磁により反発し浮上する。
さらに、図１は図２の状態からの変移を表し、振動子１２０はシャフト１０９の周りを回転しながら、ケース１０１の上側の縦振動用コイル１０３Ａの励磁により反発し、且つ、ケース１０１の下側の縦振動用コイル１０３Ｂの励磁により引き寄せられ下降する。 FIG. 2 shows a transition from the state of FIG. 1, while the vibrator 120 rotates around the shaft 109 and is attracted by the excitation of the longitudinal vibration coil 103 </ b> A on the upper side of the case 101, and the lower side of the case 101. It repels and rises due to the excitation of the longitudinal vibration coil 103B.
Further, FIG. 1 shows a transition from the state of FIG. 2, and the vibrator 120 repels by excitation of the longitudinal vibration coil 103 </ b> A on the upper side of the case 101 while rotating around the shaft 109, and below the case 101. It is attracted and lowered by the excitation of the longitudinal vibration coil 103B on the side.

図３は図１におけるドライバＩＣ１１２の概略構成を示す図である。本図に示すように、ドライバＩＣ１１２への入力の端子部１０２は従来型の振動方モータとの互換性が取れるように、正極（＋）、負極（−）の２端子で構成され、ドライバＩＣ１１２では、回転用コイル１０４への入力信号を分岐して回転用コイル１０４と縦振動用コイル１０３Ａ、１０３Ｂへの信号の２つに分ける。   FIG. 3 is a diagram showing a schematic configuration of the driver IC 112 in FIG. As shown in the figure, the terminal portion 102 for input to the driver IC 112 is composed of two terminals, a positive electrode (+) and a negative electrode (−), so as to be compatible with a conventional vibration motor. Then, the input signal to the rotating coil 104 is branched and divided into two signals: the rotating coil 104 and the signals to the longitudinal vibration coils 103A and 103B.

上側の縦振動用コイル１０３Ａ、下側の縦振動用コイル１０３Ｂの入力側にはスイッチ１１３Ａ、１１３Ｂがそれぞれ設けられ、スイッチ１１３Ａ、１１３Ｂは一定の周期でスイッチングすることにより交流波形を作り出し、上側の縦振動用コイル１０３Ａ、下側の縦振動用コイル１０３Ｂに電流を流す。
スイッチ１１３Ａ、１１３Ｂは、上側の縦振動用コイル１０３Ａ、下側の縦振動用コイル１０３Ｂを互いに電磁力の逆作用、すなわち、上側の縦振動用コイル１０３Ａが振動子１２０と引き合う場合、下側の縦振動用コイル１０３Ｂが振動子１２０と反発し合うように、構成される。 Switches 113A and 113B are provided on the input side of the upper longitudinal vibration coil 103A and the lower longitudinal vibration coil 103B, respectively, and the switches 113A and 113B generate an AC waveform by switching at a constant cycle, A current is passed through the longitudinal vibration coil 103A and the lower longitudinal vibration coil 103B.
The switches 113A and 113B are configured such that when the upper longitudinal vibration coil 103A and the lower longitudinal vibration coil 103B are opposite to each other, that is, when the upper longitudinal vibration coil 103A attracts the vibrator 120, The longitudinal vibration coil 103 </ b> B is configured to repel the vibrator 120.

すなわち、ドライバＩＣ１１２からの交流信号により、上側の縦振動用コイル１０３Ａ、下側の縦振動用コイル１０３Ｂで生じる磁束の極性が反転することで機械的に振動子１２０を上下動させることができる。
ドライバＩＣ１１２には非安定マルチバイブレータ１１４が設けられ、非安定マルチバイブレータ１１４は一定の周期のパルスを生成し、スイッチ１１３Ａ、１１３Ｂのスイッチングの制御を行う。 That is, the vibrator 120 can be mechanically moved up and down by reversing the polarity of magnetic flux generated in the upper longitudinal vibration coil 103A and the lower longitudinal vibration coil 103B by the AC signal from the driver IC 112.
The driver IC 112 is provided with an astable multivibrator 114. The astable multivibrator 114 generates a pulse having a constant period and controls switching of the switches 113A and 113B.

このようにして、縦方向の振動を実現させるため、回転とは異なる入力信号が必要となるが、内蔵のドライバＩＣ１１２による電流制御により従来の１信号２端子の入力で縦方向の振動を可能とした。
なお、上側の縦振動用コイル１０３Ａ、下側の縦振動用コイル１０３Ｂをケース１０１の上下面の両方に設置することで、片側だけに実装するよりも大きな振動効果が得られる。 In this way, in order to realize vertical vibration, an input signal different from rotation is required. However, current control by the built-in driver IC 112 enables vertical vibration with the conventional input of one signal and two terminals. did.
By installing the upper longitudinal vibration coil 103A and the lower longitudinal vibration coil 103B on both the upper and lower surfaces of the case 101, a greater vibration effect can be obtained than when mounted on only one side.

したがって、本発明によれば、縦方向の振動力を増やすため、上下動用のマグネットを振動子に、上下駆動用にコイルをモータケース内側に配置し、電磁力の逆作用により、機械的に縦方向の振動を起こし、縦横両方向の振動を実現することにより、従来のコイン型振動モータが不得意としてきた厚み（縦）方向の振動量改善を実現することが可能となり、薄型化した携帯電話機の着信の確認が容易になる。   Therefore, according to the present invention, in order to increase the vibration force in the vertical direction, the magnet for vertical movement is disposed in the vibrator, and the coil for vertical driving is disposed inside the motor case, and mechanically longitudinally by the reverse action of electromagnetic force. By generating vibrations in both directions, it is possible to improve the amount of vibration in the thickness (vertical) direction, which has been unsatisfactory by conventional coin-type vibration motors. Checking incoming calls is easy.

以上の説明では、携帯電話機について行ったが、これに限らず、ＰＨＳ（簡易型携帯電話機）、ＰＤＡ（携帯情報端末）にも本発明の利用が可能である。   In the above description, the cellular phone has been described. However, the present invention is not limited to this, and the present invention can also be used for a PHS (simple cellular phone) and a PDA (mobile information terminal).

図１は本発明に係るコイン型振動モータ１００の内部の概略構成を示す断面図である。FIG. 1 is a cross-sectional view showing a schematic configuration inside a coin-type vibration motor 100 according to the present invention. 図２は図１のコイン型振動モータ１００の振動子１２０の上側位置の状態に対して下側位置の状態を示す断面図である。FIG. 2 is a cross-sectional view showing a state of the lower side of the state of the upper side of the vibrator 120 of the coin-type vibration motor 100 of FIG. 図３は図１におけるドライバＩＣ１１２の概略構成を示す図である。FIG. 3 is a diagram showing a schematic configuration of the driver IC 112 in FIG. 図４は本発明の前提となるコイン型振動モータの外観図である。FIG. 4 is an external view of a coin-type vibration motor as a premise of the present invention. 図５は図４におけるコイン型振動モータ１００の内部の概略構成を示す断面図である。FIG. 5 is a cross-sectional view showing a schematic configuration inside the coin-type vibration motor 100 in FIG.

符号の説明Explanation of symbols

１００…コイン型振動モータ
１０１…ケース
１０２…端子部
１０３Ａ…上側の縦振動用コイル
１０３Ｂ…下側の縦振動用コイル
１０４…回転用コイル
１０５…回転用マグネット
１０６…分銅
１０７…縦振動用マグネット
１０８…防磁壁
１０９…シャフト
１１０…固定板
１１１…ベアリング
１１２…ドライバＩＣ
１２０ベアリング
１１３Ａ、１１３Ｂ…スイッチ
１１４…非安定マルチバイブレータ DESCRIPTION OF SYMBOLS 100 ... Coin type vibration motor 101 ... Case 102 ... Terminal part 103A ... Upper longitudinal vibration coil 103B ... Lower longitudinal vibration coil 104 ... Rotation coil 105 ... Rotation magnet 106 ... Weight 107 ... Longitudinal vibration magnet 108 ... Magnetic barrier 109 ... Shaft 110 ... Fixed plate 111 ... Bearing 112 ... Driver IC
120 bearing 113A, 113B ... switch 114 ... astable multivibrator

Claims (6)

ケース内側に配される回転用コイルの励磁による振動子のマグネットへの電磁力の作用で振動子を回転させ、回転する振動子の分銅で振動を起こすコイン型振動モータにおいて、
振動子の回転軸の周りでケースの上側、下側に配置される上側の縦振動用コイル及び下側の縦振動用コイルと、
上側の前記縦振動用コイル及び下側の前記縦振動用コイルに対向して振動子に配置される縦振動用マグネットと、
正極、負極の２端子から回転用コイルへの入力を上側の前記縦振動用コイルと下側の前記縦振動用コイルに向けて分岐し上側の前記縦振動用コイルと下側の前記縦振動用コイルへの入力をスイッチングした一定の周期の交流信号により上側の前記縦振動用コイルと下側の前記縦振動用コイルに生じる磁束の極性を反転し、前記縦振動用マグネットに対して上側の前記縦振動用コイルと下側の前記縦振動用コイルによる電磁力を互いに逆作用とするドライバＩＣとを備えることを特徴とするコイン型振動モータ。 In the coin-type vibration motor that rotates the vibrator by the action of electromagnetic force on the magnet of the vibrator by the excitation of the rotating coil arranged inside the case and generates vibration with the weight of the rotating vibrator,
An upper longitudinal vibration coil and a lower longitudinal vibration coil disposed on the upper and lower sides of the case around the rotation axis of the vibrator; and
A longitudinal vibration magnet disposed in a vibrator facing the upper longitudinal vibration coil and the lower longitudinal vibration coil;
The input from the two terminals of the positive electrode and the negative electrode to the rotating coil is branched toward the upper longitudinal vibration coil and the lower longitudinal vibration coil, and the upper longitudinal vibration coil and the lower longitudinal vibration input are branched. The polarity of the magnetic flux generated in the upper longitudinal vibration coil and the lower longitudinal vibration coil is reversed by an AC signal having a constant period that switches the input to the coil, and the upper side of the longitudinal vibration magnet is A coin-type vibration motor comprising a driver IC that reverses electromagnetic forces generated by a longitudinal vibration coil and a lower longitudinal vibration coil. 前記回転用コイルと前記上側の縦振動用コイル及び下側の縦振動用コイルとの間に防磁壁を設け、前記防磁壁は前記回転用コイルと前記上側の縦振動用コイル及び下側の縦振動用コイルにより生じる磁束同士の干渉を防ぐことを特徴とする、請求項１に記載のコイン型振動モータ。 A magnetic shielding wall is provided between the rotating coil, the upper longitudinal vibration coil, and the lower longitudinal vibration coil, and the magnetic shielding wall includes the rotating coil, the upper longitudinal vibration coil, and the lower longitudinal vibration coil. The coin-type vibration motor according to claim 1, wherein interference between magnetic fluxes generated by the vibration coil is prevented. 振動子の回転軸の上下に固定板を設け、前記固定板と振動子の間のクリアランスにより振動子が上下動し、前記固定板は前記振動子の上下動のストッパの役目を果すことを特徴とする、請求項１に記載のコイン型振動モータ。 A fixed plate is provided above and below the rotating shaft of the vibrator, and the vibrator moves up and down by a clearance between the fixed plate and the vibrator, and the fixed plate serves as a stopper for the vertical movement of the vibrator. The coin-type vibration motor according to claim 1. 前記固定板では、振動子と接する部分にワッシャ、ワッシャの下にはゴム製の樹脂材が設けられることを特徴とする、請求項１に記載のコイン型振動モータ。 2. The coin-type vibration motor according to claim 1, wherein the fixed plate is provided with a washer at a portion in contact with the vibrator, and a rubber resin material is provided under the washer. ケース内側に配される回転用コイルの励磁による振動子のマグネットへの電磁力の作用で振動子を回転させ、回転する振動子の分銅で振動を起こすコイン型振動モータの製造方法において、
振動子の回転軸の周りでケースの上側、下側に上側の縦振動用コイル及び下側の縦振動用コイルをそれぞれ配置する工程と、
上側の前記縦振動用コイル及び下側の前記縦振動用コイルに対向して振動子に縦振動用マグネットを配置する工程と、
正極、負極の２端子から回転用コイルへの入力を上側の前記縦振動用コイルと下側の前記縦振動用コイルに向けて分岐して上側の前記縦振動用コイルと下側の前記縦振動用コイルへの入力をスイッチングした一定の周期の交流信号により上側の前記縦振動用コイルと下側の前記縦振動用コイルに生じる磁束の極性を反転し、前記縦振動用マグネットに対して上側の前記縦振動用コイルと下側の前記縦振動用コイルによる電磁力を互いに逆作用とするドライバＩＣと設ける工程とを備えることを特徴とするコイン型振動モータの製造方法。 In the method of manufacturing a coin-type vibration motor in which a vibrator is rotated by the action of electromagnetic force on the vibrator magnet by excitation of a rotating coil arranged inside the case, and vibration is generated by a weight of the rotating vibrator.
Arranging the upper longitudinal vibration coil and the lower longitudinal vibration coil on the upper and lower sides of the case around the rotation axis of the vibrator;
Placing a longitudinal vibration magnet on a vibrator facing the upper longitudinal vibration coil and the lower longitudinal vibration coil;
The input from the two terminals of the positive electrode and the negative electrode to the rotating coil is branched toward the upper longitudinal vibration coil and the lower longitudinal vibration coil, and the upper longitudinal vibration coil and the lower longitudinal vibration are branched. The polarity of the magnetic flux generated in the upper longitudinal vibration coil and the lower longitudinal vibration coil is reversed by an AC signal having a constant period when the input to the coil for switching is switched. A method of manufacturing a coin-type vibration motor, comprising: providing a driver IC that reverses the electromagnetic force generated by the longitudinal vibration coil and the lower longitudinal vibration coil. ケース内側に配される回転用コイルの励磁による振動子のマグネットへの電磁力の作用で振動子を回転させ、回転する振動子の分銅で振動を起こすコイン型振動モータを内蔵する携帯電話機において、
振動子の回転軸の周りでケースの上側、下側に配置される上側の縦振動用コイル及び下側の縦振動用コイルと、
上側の前記縦振動用コイル及び下側の前記縦振動用コイルに対向して振動子に配置される縦振動用マグネットと、
正極、負極の２端子から回転用コイルへの入力を上側の前記縦振動用コイルと下側の前記縦振動用コイルに向けて分岐して上側の前記縦振動用コイルと下側の前記縦振動用コイルへの入力をスイッチングした一定の周期の交流信号により上側の前記縦振動用コイルと下側の前記縦振動用コイルに生じる磁束の極性を反転し、前記縦振動用マグネットに対して上側の前記縦振動用コイルと下側の前記縦振動用コイルによる電磁力を互いに逆作用とするドライバＩＣとを備えることを特徴とする、コイン型振動モータを内蔵する携帯電話機。 In a mobile phone with a built-in coin-type vibration motor that rotates the vibrator by the action of electromagnetic force on the magnet of the vibrator by excitation of the rotating coil arranged inside the case and generates vibration with the weight of the rotating vibrator,
An upper longitudinal vibration coil and a lower longitudinal vibration coil disposed on the upper and lower sides of the case around the rotation axis of the vibrator; and
A longitudinal vibration magnet disposed in a vibrator facing the upper longitudinal vibration coil and the lower longitudinal vibration coil;
The input from the two terminals of the positive electrode and the negative electrode to the rotating coil is branched toward the upper longitudinal vibration coil and the lower longitudinal vibration coil, and the upper longitudinal vibration coil and the lower longitudinal vibration are branched. The polarity of the magnetic flux generated in the upper longitudinal vibration coil and the lower longitudinal vibration coil is reversed by an AC signal having a constant period when the input to the coil for switching is switched. A mobile phone with a built-in coin-type vibration motor, comprising: a driver IC that reverses the electromagnetic forces generated by the longitudinal vibration coil and the lower longitudinal vibration coil.
JP2008053743A 2008-03-04 2008-03-04 Coin type vibrating motor, method for manufacturing the same, and portable telephone Pending JP2009208003A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011091926A (en) * 2009-10-21 2011-05-06 Ricoh Elemex Corp Coin-type vibrating motor
JP2015226388A (en) * 2014-05-28 2015-12-14 日本電信電話株式会社 Acceleration generating device
WO2018016738A1 (en) * 2016-07-19 2018-01-25 주식회사 파트론 Vibrator
CN111817524A (en) * 2020-07-31 2020-10-23 歌尔股份有限公司 Excited vibration module and electronic terminal
WO2021134319A1 (en) * 2019-12-30 2021-07-08 瑞声声学科技(深圳)有限公司 Linear vibration motor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011091926A (en) * 2009-10-21 2011-05-06 Ricoh Elemex Corp Coin-type vibrating motor
JP2015226388A (en) * 2014-05-28 2015-12-14 日本電信電話株式会社 Acceleration generating device
WO2018016738A1 (en) * 2016-07-19 2018-01-25 주식회사 파트론 Vibrator
WO2021134319A1 (en) * 2019-12-30 2021-07-08 瑞声声学科技(深圳)有限公司 Linear vibration motor
CN111817524A (en) * 2020-07-31 2020-10-23 歌尔股份有限公司 Excited vibration module and electronic terminal

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