JP2002325415A - Vibrating linear actuator - Google Patents
Vibrating linear actuatorInfo
- Publication number
- JP2002325415A JP2002325415A JP2001126614A JP2001126614A JP2002325415A JP 2002325415 A JP2002325415 A JP 2002325415A JP 2001126614 A JP2001126614 A JP 2001126614A JP 2001126614 A JP2001126614 A JP 2001126614A JP 2002325415 A JP2002325415 A JP 2002325415A
- Authority
- JP
- Japan
- Prior art keywords
- mover
- vibration
- linear actuator
- neutral
- permanent magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Electromagnets (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、振動型のリニアア
クチュエータに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration type linear actuator.
【０００２】[0002]
【従来の技術】振動型リニアアクチュエータとして、図
９〜図１１に示すように、永久磁石４とヨーク（バック
ヨーク）５とこれらを一体化する骨組部材６とからなる
可動子２と、ステータ１と巻線７とからなる電磁石１２
とを備えて、電磁石１２によって可動子２を往復駆動さ
せるものがあるが、従来のこの種の振動型リニアアクチ
ュエータでは、図１２に示すように、可動子振動方向Ｘ
において永久磁石４の磁極間のニュートラル２０がステ
ータ１の鉄心２２の中心線２１と一致していた。2. Description of the Related Art As a vibration-type linear actuator, as shown in FIGS. 9 to 11, a movable element 2 comprising a permanent magnet 4, a yoke (back yoke) 5, and a frame member 6 integrating these elements, a stator 1 And an electromagnet 12 comprising a winding 7
And the movable element 2 is reciprocally driven by the electromagnet 12. In a conventional vibration-type linear actuator of this type, as shown in FIG.
In the above, the neutral 20 between the magnetic poles of the permanent magnet 4 coincided with the center line 21 of the iron core 22 of the stator 1.
【０００３】[0003]
【発明が解決しようとする課題】この場合、リニアアク
チュエータの大きさに制限がある時、可動子２の振幅が
大きくなると、電磁石１２の巻線７から発生する逆起電
圧信号の波形が歪んでしまい、このために逆気電圧信号
に基づいてリニアアクチュエータの動作を制御している
と、振幅の制御ができなくなるという問題があった。ま
た、逆起電圧信号の波形を歪まないようにするとアクチ
ュエータが大きくなるという問題があった。In this case, when the size of the linear actuator is limited and the amplitude of the mover 2 increases, the waveform of the back electromotive force signal generated from the winding 7 of the electromagnet 12 is distorted. Therefore, if the operation of the linear actuator is controlled based on the reverse voltage signal, there is a problem that the amplitude cannot be controlled. Further, there is a problem that the actuator becomes large if the waveform of the back electromotive force signal is not distorted.
【０００４】本発明は上記の従来例の問題点に鑑みて発
明したものであって、その目的とするところは、大きさ
が限られたものにおいても振幅の大きさにかかわらず逆
起電圧信号の波形が歪みにくい振動型リニアアクチュエ
ータを提供するにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art, and has as its object to provide a counter electromotive force signal regardless of the amplitude, even if the size is limited. An object of the present invention is to provide a vibration type linear actuator whose waveform is hardly distorted.
【０００５】[0005]
【課題を解決するための手段】しかして請求項１の発明
は、永久磁石とヨークとからなる可動子と、ステータと
巻線とからなる電磁石とを備えるとともに、電磁石にて
可動子を往復駆動するとともに該駆動で発生する逆起電
圧信号により上記往復駆動の制御を行う振動型リニアア
クチュエータにおいて、永久磁石の磁極間のニュートラ
ルとステータの鉄心併設方向の鉄心の中心線とを可動子
振動方向にずらしていることに特徴を有している。According to a first aspect of the present invention, there is provided a movable element including a permanent magnet and a yoke, an electromagnet including a stator and a winding, and the movable element is reciprocally driven by the electromagnet. In addition, in the vibration type linear actuator which controls the reciprocating drive by the back electromotive force signal generated by the driving, the neutral between the magnetic poles of the permanent magnets and the center line of the iron core in the direction in which the stator core is provided in the mover vibration direction. The feature is that it is shifted.
【０００６】そして請求項２の発明は上記請求項１にお
いて、ステータは鉄心が２つであり、永久磁石の磁極が
３極であることに特徴を有しており、請求項３の発明は
上記請求項１の発明において、ステータは鉄心が３つで
あり、永久磁石の磁極が２極であることに特徴を有して
いる。A second aspect of the present invention is characterized in that, in the first aspect, the stator has two iron cores and the permanent magnet has three magnetic poles. The invention according to claim 1 is characterized in that the stator has three iron cores and the permanent magnet has two magnetic poles.
【０００７】また、請求項４の発明は、上記請求項１〜
３のいずれかの発明において、複数の可動子を有すると
ともに少なくとも一つの可動子が備える永久磁石の磁極
間のニュートラルがステータの鉄心併設方向の鉄心の中
心線から可動子振動方向にずれていることに特徴を有し
ており、請求項５の発明は、上記請求項１〜３のいずれ
かの発明において、互いにカウンターで逆方向に動く複
数の可動子を有して、同一方向に動く各可動子のニュー
トラルが同一方向にずれており、逆方向に動く各可動子
のニュートラルが上記のずれ方向と逆方向にずれている
ことに特徴を有しており、請求項６の発明は、上記請求
項５の発明において、各永久磁石のニュートラルが鉄心
中心線から可動子振動方向に同じ距離だけずれているこ
とに特徴を有している。[0007] The invention of claim 4 provides the above-mentioned claims 1 to
In any one of the third to third aspects, the neutral between the magnetic poles of the permanent magnets provided in the at least one mover and having a plurality of movers is deviated from the center line of the iron core in the direction in which the stator core is installed in the mover vibration direction. The invention according to claim 5 is the invention according to any one of claims 1 to 3, further comprising a plurality of movers that move in opposite directions by a counter with each other, and each mover moves in the same direction. The invention is characterized in that the neutral of the child is shifted in the same direction, and the neutral of each movable element that moves in the opposite direction is shifted in the direction opposite to the above-mentioned shift direction. The invention of Item 5 is characterized in that the neutral of each permanent magnet is displaced from the center line of the iron core by the same distance in the moving member vibration direction.
【０００８】また、請求項７の発明は、上記上記請求項
１〜３のいずれかの発明において、可動子振動方向とそ
れに垂直な可動子併設方向からなる平面上で、永久磁石
のニュートラルと鉄心併設方向に垂直なステータの鉄心
の中心線が平行であることに特徴を有しており、請求項
８の発明は上記上記請求項１〜３のいずれかの発明にお
いて、可動子振動方向とそれに垂直な可動子併設方向か
らなる平面で、永久磁石のニュートラルと鉄心併設方向
に垂直なステータの鉄心の中心線が交わることに特徴を
有している。そして、請求項９の発明は、上記請求項８
の発明において、ステータの鉄心併設方向と可動子振動
方向が平行であり、平面内で永久磁石が可動子に斜めに
取り付けられることに特徴を有しており、請求項１０の
発明は上記請求項８の発明において、ステータの鉄心併
設方向と可動子振動方向が平行であり、可動子振動方向
と平行に永久磁石が可動子に取り付けられており、平面
内でニュートラルが鉄心中心に対して斜めになっている
ことに特徴を有しており、請求項１１の発明は上記請求
項８の発明において、ニュートラルと可動子振動方向が
垂直であり、ステータが平面内でニュートラルに対して
斜めに取り付けられることに特徴を有しており、請求項
１２の発明は上記請求項８の発明において、各永久磁石
の対向側でニュートラルの端が、振動方向に垂直な可動
子併設方向の同一直線上にあることに特徴を有してい
る。According to a seventh aspect of the present invention, in any one of the first to third aspects of the present invention, the neutral and the iron core of the permanent magnet are provided on a plane formed by the movable member vibration direction and the movable member perpendicular direction. The invention is characterized in that the center line of the iron core of the stator perpendicular to the juxtaposition direction is parallel, and the invention of claim 8 is the invention according to any one of claims 1 to 3, wherein It is characterized in that the neutral line of the permanent magnet and the center line of the core of the stator perpendicular to the direction in which the iron core is installed intersect on a plane formed in the direction in which the movable element is installed vertically. According to the ninth aspect of the present invention,
The invention according to claim 10 is characterized in that the direction in which the core of the stator is arranged and the direction of vibration of the mover are parallel to each other, and the permanent magnet is obliquely attached to the mover in a plane. In the invention of the eighth aspect, the direction in which the stator has the core and the direction of the mover vibration are parallel to each other, the permanent magnet is attached to the mover in parallel with the direction of the mover vibration, and the neutral is oblique to the center of the core in the plane. The eleventh aspect of the present invention is characterized in that, in the eighth aspect of the present invention, the neutral and mover vibration directions are perpendicular to each other, and the stator is attached obliquely to the neutral in a plane. According to a twelfth aspect of the present invention, in the eighth aspect of the present invention, the end of the neutral on the opposite side of each of the permanent magnets is the same in the direction in which the movable element is perpendicular to the vibration direction. It is characterized in that on the line.
【０００９】また請求項１３の発明は、上記請求項５の
発明において、鉄心併設方向に垂直なステータの鉄心の
中心線とニュートラルが可動子振動方向に対して垂直で
あり、各永久磁石の対向側で永久磁石端部のニュートラ
ルが可動子の併設方向と交わり、各永久磁石の対向する
ニュートラルの端が、振動方向に垂直な可動子併設方向
の同一直線上にあることに特徴を有している。According to a thirteenth aspect of the present invention, in the fifth aspect of the present invention, the center line and the neutral of the iron core of the stator perpendicular to the direction in which the iron cores are arranged are perpendicular to the moving member vibration direction. On the side, the neutral of the end of the permanent magnet intersects the direction of the mover, and the opposite neutral end of each permanent magnet is on the same straight line in the direction of the mover perpendicular to the vibration direction. I have.
【００１０】[0010]
【発明の実施の形態】以下本発明の実施の形態の一例を
図に基づいて詳述すると、図９〜図１１は往復式電気か
みそりの駆動源として用いる振動型リニアアクチュエー
タを示しており、図中の２，２は可動子であって、いず
れも磁性材料からなるヨーク（バックヨーク）５と永久
磁石４とこれらを一体化する骨組部材６とで構成されて
いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIGS. 9 to 11 show a vibrating linear actuator used as a drive source of a reciprocating electric shaver. Reference numerals 2 and 2 denote movers, each of which includes a yoke (back yoke) 5 made of a magnetic material, a permanent magnet 4, and a frame member 6 that integrates them.
【００１１】電磁石１２は、磁性材料の焼結体や磁性材
料の鉄板を積層したステータ１に絶縁体であるコイルボ
ビン１３を介して巻線７を施したステータコアであり、
シャーシ３に固定されている。The electromagnet 12 is a stator core in which a winding 7 is applied to a stator 1 on which a sintered body of a magnetic material or an iron plate of a magnetic material is laminated via a coil bobbin 13 which is an insulator.
It is fixed to the chassis 3.
【００１２】そして、可動子２を電磁石１２に対して非
接触状態に保持して電磁石１２と可動子２との対向部に
おけるギャップ８を確保するために、伸びの少ない材
料、ここでは板ばねで形成されたブレード９の上端をシ
ャーシ３にねじ具または溶接により固着し、ブレード９
の下端を支持板１１を介して可動子２に固着すること
で、電磁石１２が固定されているシャーシ３から可動子
２を吊り下げ支持している。図中の１０は振動型リニア
アクチュエータと他部品とを固定する基台であり、ねじ
具または溶接によりシャーシ３に固定してある。In order to maintain the movable element 2 in a non-contact state with respect to the electromagnet 12 and to secure the gap 8 at the opposing portion between the electromagnet 12 and the movable element 2, a material having little expansion, here a leaf spring, is used. The upper end of the formed blade 9 is fixed to the chassis 3 by screwing or welding, and the blade 9
Is fixed to the mover 2 via the support plate 11 to suspend and support the mover 2 from the chassis 3 to which the electromagnet 12 is fixed. Reference numeral 10 in the figure denotes a base for fixing the vibration type linear actuator and other parts, and is fixed to the chassis 3 by screws or welding.
【００１３】このものにおいては、電磁石１２の電流方
向を交番にすることで、永久磁石４を備えた可動子２が
往復駆動されるもので、いわゆるリニアモータと称され
る振動型リニアアクチュエータを構成しており、この振
動型リニアアクチュエータは上記のように可動子２、電
磁石１２がブレード９、シャーシ３を介して位置固定さ
れてブロック化されている。In this device, the movable member 2 having the permanent magnet 4 is reciprocated by changing the current direction of the electromagnet 12 in an alternating manner, so that a vibrating linear actuator called a so-called linear motor is constituted. In this vibration type linear actuator, the mover 2 and the electromagnet 12 are fixed in position via the blade 9 and the chassis 3 to form a block as described above.
【００１４】上記往復駆動についてさらに詳しく説明す
ると、可動子２は永久磁石４と電磁石１２との吸引・反
発力により移動するが、その移動方向はブレード９によ
って振動型リニアアクチュエータの往復運動方向にのみ
移動可能となっている。そして往復運動の右方向運動と
左方向運動では巻線７に与える電流の向きを反転させ
る。The reciprocating drive will be described in more detail. The mover 2 is moved by the attraction and repulsion of the permanent magnet 4 and the electromagnet 12, but the direction of movement is limited only by the blade 9 in the reciprocating direction of the vibrating linear actuator. It is movable. In the reciprocating rightward movement and leftward movement, the direction of the current applied to the winding 7 is reversed.
【００１５】上記電流の制御は、逆起電圧を利用して行
っている。すなわち、可動子２に設置された永久磁石４
が往復運動をすることで、電磁石１２の巻線７には逆起
電圧が発生するとともに、この逆起電圧は可動子２の振
幅の大きさにより変化する。このために、逆起電圧によ
って可動子２の振幅量を検知することができるものであ
り、これを基にフィードバック制御を行うことで、可動
子２に連続した往復駆動である振動を行わせている。The above current is controlled by using a back electromotive voltage. That is, the permanent magnet 4 installed on the mover 2
Make a reciprocating motion, a back electromotive voltage is generated in the winding 7 of the electromagnet 12, and the back electromotive voltage changes depending on the magnitude of the amplitude of the mover 2. For this reason, the amplitude amount of the mover 2 can be detected by the back electromotive voltage, and feedback control is performed based on this to cause the mover 2 to perform continuous reciprocating vibration. I have.
【００１６】ここにおいて、本発明に係る振動型リニア
アクチュエータにおいては、図１に示すように、永久磁
石４の磁極間のニュートラル２０とステータ１の鉄心２
２の鉄心併設方向（図１２中のＸ方向）に垂直な中心線
２１とを可動子２の振動方向にずらしている。これによ
り、振動方向の大きさが制限されたリニアアクチュエー
タで可動子２の振幅が大きくなっても、従来と比して、
電磁石１２の巻線７から発生する逆起電圧の歪を減少さ
せることができ、小型化が可能となる。Here, in the vibration linear actuator according to the present invention, as shown in FIG. 1, the neutral 20 between the magnetic poles of the permanent magnet 4 and the iron core 2 of the stator 1 are used.
The center line 21 that is perpendicular to the direction in which the movable core 2 is provided (X direction in FIG. 12) is shifted in the vibration direction of the mover 2. Thereby, even if the amplitude of the mover 2 is increased in the linear actuator in which the size in the vibration direction is limited,
The distortion of the back electromotive voltage generated from the winding 7 of the electromagnet 12 can be reduced, and the size can be reduced.
【００１７】また、図１に示すものは、永久磁石４の磁
極が３極でステータ１の鉄心２２が２つで構成されるリ
ニアアクチュエータを示しており、このような磁気回路
の構成において逆起電圧の歪を減少させることができ、
小型化が可能となる。FIG. 1 shows a linear actuator in which the permanent magnet 4 has three magnetic poles and the stator 1 has two iron cores 22. In such a magnetic circuit configuration, a counter-electromotive force is generated. Voltage distortion can be reduced,
The size can be reduced.
【００１８】さらに、図１では少なくとも１つの可動子
２の永久磁石４のニュートラル２０と、ステータ１の鉄
心２２の中心線２１とをずらしている。したがって、ず
らす箇所を最小にしながら逆起電圧の歪を減少させるこ
とができ、小型化が可能となる。Further, in FIG. 1, the neutral 20 of the permanent magnet 4 of the at least one mover 2 and the center line 21 of the iron core 22 of the stator 1 are shifted. Therefore, the distortion of the back electromotive voltage can be reduced while minimizing the position to be shifted, and the size can be reduced.
【００１９】図２に他例を示す。これは永久磁石４の磁
極が２極でステータ１の鉄心２２が３つで構成されたも
のにおいて、永久磁石４の磁極間のニュートラルの位置
と鉄心２２の中心線２１とをずらすことで、逆起電圧の
歪を減少させている。FIG. 2 shows another example. This is because the permanent magnet 4 has two magnetic poles and the stator 1 has three iron cores 22, and the neutral position between the magnetic poles of the permanent magnet 4 and the center line 21 of the iron core 22 are displaced from each other. The distortion of the electromotive voltage is reduced.
【００２０】図３に示すものは、永久磁石４の着磁が逆
となっているために互いにカウンターで逆方向に動く可
動子２，２における一方の可動子２の永久磁石４ａのニ
ュートラル２０ａと、それと逆方向に動く可動子２の永
久磁石４ｂのニュートラル２０ｂとを、鉄心２２の中心
線２１に対して互いに逆向きにずらしたものを示してい
る。電磁石１２の巻線７に発生する逆起電圧は、各可動
子２，２の動作により発生する各逆起電圧の合成である
ために、各逆起電圧の歪が減少することにより巻線に発
生する全体の逆起電圧の歪も減少する。したがって、１
つの可動子２，２のニュートラル２０をずらすときより
もさらに逆起電圧の歪を減少させることができる。FIG. 3 shows a case where the permanent magnets 4 of the movable elements 2 and 2 move in opposite directions at the counter because the magnetization of the permanent magnets 4 is reversed. , The neutral 20b of the permanent magnet 4b of the mover 2 that moves in the opposite direction to the neutral 20b is shifted in a direction opposite to the center line 21 of the iron core 22. Since the back electromotive voltage generated in the winding 7 of the electromagnet 12 is a combination of the back electromotive voltages generated by the operations of the movers 2 and 2, the distortion of each back electromotive voltage is reduced, so that the back electromotive voltage is applied to the winding. The generated back electromotive voltage distortion is also reduced. Therefore, 1
The distortion of the back electromotive voltage can be further reduced than when the neutrals 20 of the two movers 2 and 2 are shifted.
【００２１】また、図３に示すものでは、ニュートラル
２０ａとニュートラル２０ｂの鉄心２２の中心線２１か
らのずれ量２４を等しくしているために、最も効率よく
逆起電圧の歪を減少させることができる。In the embodiment shown in FIG. 3, since the amount of deviation 24 of the neutral 20a and the neutral 20b from the center line 21 of the iron core 22 is made equal, the distortion of the back electromotive voltage can be reduced most efficiently. it can.
【００２２】さらに図３に示すものでは、ニュートラル
２０ａ，２０ｂと、鉄心２２の中心線２１とを平行にし
ているために、永久磁石４に発生する推進力の方向を可
動子の振動方向と同一としながら、逆起電圧の歪を減少
させることができる。Further, in FIG. 3, since the neutrals 20a and 20b and the center line 21 of the iron core 22 are parallel to each other, the direction of the propulsive force generated in the permanent magnet 4 is the same as the direction of vibration of the mover. However, the distortion of the back electromotive voltage can be reduced.
【００２３】図４に別例を示す。ここでは、永久磁石４
４可動子２に対して平面内で斜めに取り付けることで、
ニュートラル２０も中心線２１と一致せずにずれたもの
となっている。この場合、永久磁石４の仕様を従来例か
ら変更することなく鉄心２２の中心線２１に対してニュ
ートラル２０の位置をずらすことができる。FIG. 4 shows another example. Here, the permanent magnet 4
4 By attaching to the mover 2 at an angle in a plane,
The neutral 20 is also displaced without being coincident with the center line 21. In this case, the position of the neutral 20 can be shifted with respect to the center line 21 of the iron core 22 without changing the specification of the permanent magnet 4 from the conventional example.
【００２４】図５に示すように、永久磁石４の磁極間の
ニュートラル２０が永久磁石４に対して斜めになるよう
にしておいてもよい。この場合、永久磁石４の可動子２
への取り付け幅２３を図４に示す場合よりも小さくする
ことができる。リニアアクチュエータの可動子併設方向
（図１２中のＹ方向）の寸法を図４のものよりも小さく
しながら、永久磁石４のニュートラル２０を鉄心２２の
中心線２１に対してずらして、逆起電圧の歪を減少する
ことができるものである。As shown in FIG. 5, the neutral 20 between the magnetic poles of the permanent magnet 4 may be inclined with respect to the permanent magnet 4. In this case, the mover 2 of the permanent magnet 4
4 can be made smaller than the case shown in FIG. While the dimension of the linear actuator in the direction in which the mover is provided (Y direction in FIG. 12) is smaller than that in FIG. 4, the neutral 20 of the permanent magnet 4 is shifted with respect to the center line 21 of the iron core 22 to obtain the back electromotive force. Can be reduced.
【００２５】図６に示すように、ステータ１を可動子２
に対して平面内で斜めに取り付けるようにしてもよい。
この場合においても、リニアアクチュエータの可動子併
設方向の寸法を図４に示したものより小さくしながら、
永久磁石４のニュートラル２０を従来例から変更するこ
となく鉄心２２の中心線２１に対してずらして、逆起電
圧の歪を減少させることができる。As shown in FIG. 6, the stator 1 is
May be attached obliquely in a plane.
Also in this case, while the dimension of the linear actuator in the direction in which the mover is provided is smaller than that shown in FIG.
By displacing the neutral 20 of the permanent magnet 4 with respect to the center line 21 of the iron core 22 without changing from the conventional example, the distortion of the back electromotive voltage can be reduced.
【００２６】図７に別の例を示す。ここでは、隣り合う
各永久磁石４，４の対向側で永久磁石４のニュートラル
２０の端部が振動方向に垂直な可動子併設方向の同一直
線上に位置するようにしている。したがって、図５に示
したものにおいて生じる永久磁石４，４間の同磁極の対
向部２５がなくなるものであり、永久磁石４の着磁を行
う際に用いる着磁ヨークの巻線の配線を簡略化できるた
め、可動子２，２間の距離２６を小さくすることができ
る。従って、リニアアクチュエータの可動子併設方向の
寸法を小さくしながら、逆起電圧の歪を減少させること
ができる。FIG. 7 shows another example. Here, the end portion of the neutral 20 of the permanent magnet 4 is positioned on the same straight line in the direction in which the mover is perpendicular to the vibration direction on the side opposite to the adjacent permanent magnets 4. Therefore, the opposing portions 25 of the same magnetic pole between the permanent magnets 4 and 4 generated in the one shown in FIG. 5 are eliminated, and the wiring of the winding of the magnetizing yoke used for magnetizing the permanent magnet 4 is simplified. Therefore, the distance 26 between the movers 2 and 2 can be reduced. Therefore, it is possible to reduce the distortion of the back electromotive voltage while reducing the size of the linear actuator in the direction in which the mover is provided.
【００２７】図８に示すように、ニュートラル２０を鉄
心２２の中心線２１との平行を保ったままずらすととも
に、隣り合う永久磁石４，４の対向側で永久磁石４のニ
ュートラル２０の端部が振動方向に垂直な可動子併設方
向の同一直線上に位置するようにしてもよい。永久磁石
４に発生する推進力の方向を可動子２の振動方向と同一
とし、さらに、リニアアクチュエータの可動子併設方向
の寸法を小さくしながら、逆起電圧の歪を減少させるこ
とができる。As shown in FIG. 8, the neutral 20 is shifted while maintaining the parallelism with the center line 21 of the iron core 22, and the end of the neutral 20 of the permanent magnet 4 is opposed to the adjacent permanent magnets 4, 4. They may be located on the same straight line in the direction in which the mover is attached perpendicularly to the vibration direction. The direction of the propulsive force generated in the permanent magnet 4 can be made the same as the direction of vibration of the mover 2, and further, the distortion of the back electromotive voltage can be reduced while reducing the size of the linear actuator in the direction in which the mover is provided.
【００２８】[0028]
【発明の効果】以上のように請求項１の発明にあって
は、永久磁石のニュートラルと鉄心併設方向のステータ
の鉄心の中心線を、可動子振動方向にずらしているため
に、電磁石の巻線から発生する逆起電圧の歪を減少させ
ることができ、小型化にあたっての問題点を無くすこと
ができる。As described above, according to the first aspect of the present invention, since the center line of the core of the stator in the direction in which the neutral of the permanent magnet and the iron core are provided is shifted in the direction of vibration of the mover, the winding of the electromagnet is performed. The distortion of the back electromotive voltage generated from the wire can be reduced, and the problem of miniaturization can be eliminated.
【００２９】請求項２の発明にあっては、永久磁石の磁
極が３極でステータの鉄心が２つで構成されるリニアア
クチュエータにおいて、逆起電圧の歪を減少させること
ができる。According to the second aspect of the present invention, in the linear actuator in which the permanent magnet has three magnetic poles and the stator has two iron cores, the back electromotive voltage distortion can be reduced.
【００３０】請求項３の発明にあっては、永久磁石の磁
極が２極でステータの鉄心が３つで構成されるリニアア
クチュエータにおいて、逆起電圧の歪を減少させること
ができる。According to the third aspect of the present invention, the distortion of the back electromotive voltage can be reduced in a linear actuator in which the permanent magnet has two magnetic poles and the stator has three iron cores.
【００３１】請求項４の発明にあっては、複数の可動子
のうち少なくとも１つの可動子の永久磁石のニュートラ
ルと、ステータの鉄心の中心線がずれていることによ
り、ずらす箇所を最小にしながら逆起電圧の歪を減少さ
せることができる。According to the fourth aspect of the present invention, since the center line of the permanent magnet of at least one of the plurality of movers and the center line of the core of the stator is displaced, the position to be displaced is minimized. The distortion of the back electromotive voltage can be reduced.
【００３２】請求項５の発明にあっては、互いにカウン
ターで逆方向に動く複数の可動子で、同一方向に動く各
可動子のニュートラルが同一方向にずれており、逆方向
に動く各可動子のニュートラルが上記のずれ方向と逆方
向にずれていることにより、１つの可動子のニュートラ
ルをずらすときよりもさらに逆起電圧の歪を減少させる
ことができるものであり、また、さらに小型化すること
ができる。According to the fifth aspect of the present invention, each of the plurality of movers moving in the opposite direction at the counter, the neutral of each mover moving in the same direction is shifted in the same direction, and each mover moving in the opposite direction. Is shifted in the direction opposite to the above shift direction, the distortion of the back electromotive voltage can be further reduced as compared with the case where the neutral of one mover is shifted, and further downsizing is achieved. be able to.
【００３３】請求項６の発明にあっては、各永久磁石の
ニュートラルがステータの鉄心の中心線に対して、可動
子の振動方向に同じ距離だけずれていることにより、最
も効率よく逆起電圧の歪を減少させることができる。According to the sixth aspect of the invention, since the neutral of each permanent magnet is shifted by the same distance from the center line of the iron core of the stator in the vibration direction of the mover, the back electromotive force is most efficiently obtained. Can be reduced.
【００３４】請求項７の発明にあっては、可動子振動方
向と可動子併設方向からなる平面上で、永久磁石のニュ
ートラルと鉄心併設方向のステータの鉄心の中心線が平
行であることにより、永久磁石に発生する推進力の方向
を可動子振動方向と同一としながら、逆起電圧の歪を減
少させることができる。According to the seventh aspect of the present invention, the neutral line of the permanent magnet and the center line of the iron core of the stator in the direction in which the iron core is installed are parallel to each other on a plane formed by the moving element oscillation direction and the armature installation direction. It is possible to reduce the distortion of the back electromotive voltage while making the direction of the propulsion force generated in the permanent magnet the same as the direction of the mover vibration.
【００３５】請求項８の発明にあっては、可動子振動方
向と可動子併設方向からなる平面で、永久磁石のニュー
トラルと鉄心併設方向のステータの鉄心の中心線が交わ
ることにより、可動子振動方向におけるニュートラルの
位置を従来例から変更することなく逆起電圧の歪を減少
させることができる。According to the eighth aspect of the present invention, when the neutral line of the permanent magnet and the center line of the iron core of the stator in the direction in which the iron core is installed intersect with each other on a plane formed by the moving element oscillation direction and the armature installation direction, The back electromotive force distortion can be reduced without changing the neutral position in the direction from the conventional example.
【００３６】請求項９の発明にあっては、ステータの鉄
心併設方向と可動子振動方向が平行であり、平面で永久
磁石が可動子に斜めに取り付けられることにより、永久
磁石上のニュートラルを従来例から変更することなく逆
起電圧の歪を減少させることができる。According to the ninth aspect of the present invention, the direction in which the iron core of the stator is arranged and the direction of vibration of the mover are parallel to each other, and the permanent magnet is obliquely attached to the mover in a plane, so that the neutral on the permanent magnet can be reduced. The distortion of the back electromotive voltage can be reduced without changing the example.
【００３７】請求項１０の発明にあっては、ステータの
鉄心併設方向と可動子振動方向が平行であり、可動子に
平行に永久磁石が取り付けられて、ニュートラルが鉄心
中心線に対して斜めになっていることにより、リニアア
クチュエータの可動子併設方向の寸法を大きくすること
なく、逆起電圧の歪を減少させることができる。According to the tenth aspect of the present invention, the direction in which the iron core of the stator is provided and the direction of vibration of the mover are parallel, and a permanent magnet is mounted in parallel with the mover, and the neutral is oblique to the center line of the iron core. With this configuration, the distortion of the back electromotive voltage can be reduced without increasing the size of the linear actuator in the direction in which the mover is provided.
【００３８】請求項１１の発明にあっては、永久磁石の
ニュートラルと可動子振動方向が垂直であり、ステータ
が斜めに取り付けられることにより、リニアアクチュエ
ータの可動子併設方向の寸法を大きくすることなく、ま
た、永久磁石のニュートラルを従来例から変更すること
なく逆起電圧の歪を減少させることができる。According to the eleventh aspect of the present invention, the neutral magnet of the permanent magnet is perpendicular to the movable element vibration direction, and the stator is mounted obliquely, so that the size of the linear actuator in the direction in which the movable element is provided is not increased. Moreover, the distortion of the back electromotive voltage can be reduced without changing the neutral of the permanent magnet from the conventional example.
【００３９】請求項１２の発明にあっては、各永久磁石
の対向するニュートラルの端が、振動方向に垂直な可動
子併設方向の同一直線上にあることにより、各永久磁石
間の同磁極の対向部をなくして各可動子間を小さくし、
これによりリニアアクチュエータの可動子併設方向の寸
法を小さくしながら、逆起電圧の歪を減少させることが
できる。According to the twelfth aspect of the present invention, the opposite neutral ends of the permanent magnets are on the same straight line in the direction in which the mover is arranged perpendicular to the vibration direction, so that the same magnetic pole between the permanent magnets is formed. Eliminate the opposing part and reduce the space between each mover,
This makes it possible to reduce the back electromotive voltage distortion while reducing the size of the linear actuator in the direction in which the mover is provided.
【００４０】請求項１３の発明にあっては、鉄心併設方
向のステータの鉄心の中心線とニュートラルが可動子振
動方向に対して垂直であり、各永久磁石の対向する永久
磁石端部のニュートラルが可動子併設方向と交わり、各
永久磁石の対向するニュートラルの端が、振動方向に垂
直な可動子併設方向の同一直線上にあることにより、永
久磁石に発生する推進力の方向を可動子振動方向と同一
とし、さらに、リニアアクチュエータの可動子併設方向
の寸法を小さくしながら、逆起電圧の歪を減少させるこ
とができる。According to the thirteenth aspect of the present invention, the center line of the iron core of the stator in the direction in which the iron cores are installed and the neutral are perpendicular to the direction of vibration of the mover, and the neutral of the opposing permanent magnet end of each permanent magnet is equal to the neutral. The direction of the propulsive force generated in the permanent magnets is determined by the direction of the propulsive force generated by the permanent magnets because the opposite neutral ends of the permanent magnets intersect with the direction of the mover and are on the same straight line in the direction of the mover. In addition, the distortion of the back electromotive voltage can be reduced while reducing the size of the linear actuator in the direction in which the mover is provided.
【図１】本発明の実施の形態の一例の要部を示すもの
で、(a)は斜視図、(b)は平面図、(c)は側面図である。FIG. 1 shows a main part of an example of an embodiment of the present invention, in which (a) is a perspective view, (b) is a plan view, and (c) is a side view.
【図２】他例の要部を示すもので、(a)は斜視図、(b)は
平面図、(c)は側面図である。FIGS. 2A and 2B show a main part of another example, in which FIG. 2A is a perspective view, FIG. 2B is a plan view, and FIG. 2C is a side view.
【図３】更に他例の要部を示す平面図である。FIG. 3 is a plan view showing a main part of still another example.
【図４】別の例の要部を示す平面図である。FIG. 4 is a plan view showing a main part of another example.
【図５】更に別の例の要部を示す平面図である。FIG. 5 is a plan view showing a main part of still another example.
【図６】異なる例の要部を示す平面図である。FIG. 6 is a plan view showing a main part of another example.
【図７】他の例の要部を示す平面図である。FIG. 7 is a plan view showing a main part of another example.
【図８】更に他の例例の要部を示す平面図である。FIG. 8 is a plan view showing a main part of still another example.
【図９】全体構成を示す斜視図である。FIG. 9 is a perspective view showing the overall configuration.
【図１０】全体構成を示す正面図である。FIG. 10 is a front view showing the entire configuration.
【図１１】同上の分解斜視図である。FIG. 11 is an exploded perspective view of the same.
【図１２】従来例の要部を示すもので、(a)は斜視図、
(b)は平面図、(c)は側面図である。12 shows a main part of a conventional example, (a) is a perspective view,
(b) is a plan view, and (c) is a side view.
１ ステータ ２ 可動子 ４ 永久磁石 ７ 巻線 １２ 電磁石 ２０ ニュートラル ２１ 中心線 ２２ 鉄心 DESCRIPTION OF SYMBOLS 1 Stator 2 Mover 4 Permanent magnet 7 Winding 12 Electromagnet 20 Neutral 21 Center line 22 Iron core
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5E048 AA10 AD01 5H633 BB08 BB11 GG02 GG05 GG09 GG13 HH03 HH05 HH09 HH13 JA03 JB05 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5E048 AA10 AD01 5H633 BB08 BB11 GG02 GG05 GG09 GG13 HH03 HH05 HH09 HH13 JA03 JB05
Claims (13)
ステータと巻線とからなる電磁石とを備えるとともに、
電磁石にて可動子を往復駆動するとともに該駆動で発生
する逆起電圧信号により上記往復駆動の制御を行う振動
型リニアアクチュエータにおいて、永久磁石の磁極間の
ニュートラルとステータの鉄心併設方向の鉄心の中心線
とを可動子振動方向にずらしていることを特徴とする振
動型リニアアクチュエータ。1. A mover comprising a permanent magnet and a yoke;
With an electromagnet consisting of a stator and windings,
In a vibrating linear actuator that reciprocally drives a mover with an electromagnet and controls the reciprocating drive by a back electromotive force signal generated by the driving, the center of the core between the neutral between the magnetic poles of the permanent magnet and the core of the stator is arranged. A vibrating linear actuator characterized in that the line is shifted in the moving direction of the mover.
の磁極が３極であることを特徴とする請求項１記載の振
動型リニアアクチュエータ。2. The vibrating linear actuator according to claim 1, wherein the stator has two iron cores, and the permanent magnet has three magnetic poles.
の磁極が２極であることを特徴とする請求項１記載の振
動型リニアアクチュエータ。3. The vibratory linear actuator according to claim 1, wherein the stator has three iron cores and the permanent magnet has two magnetic poles.
も一つの可動子が備える永久磁石の磁極間のニュートラ
ルがステータの鉄心併設方向の鉄心の中心線から可動子
振動方向にずれていることを特徴とする請求項１〜３の
いずれかの項に記載の振動型リニアアクチュエータ。4. A method according to claim 1, wherein the at least one mover includes a plurality of movers, and a neutral between magnetic poles of permanent magnets of the at least one mover is displaced from a center line of the iron core in a direction in which the stator core is provided in the mover vibration direction. The vibration type linear actuator according to claim 1.
可動子を有して、同一方向に動く各可動子のニュートラ
ルが同一方向にずれており、逆方向に動く各可動子のニ
ュートラルが上記のずれ方向と逆方向にずれていること
を特徴とする請求項１〜３のいずれかの項に記載の振動
型リニアアクチュエータ。5. A plurality of movers which move in opposite directions at a counter with respect to each other, wherein neutral of each mover moving in the same direction is shifted in the same direction, and neutral of each mover moving in the opposite direction is as described above. The vibration type linear actuator according to any one of claims 1 to 3, wherein the vibration type linear actuator is shifted in a direction opposite to the shift direction.
から可動子振動方向に同じ距離だけずれていることを特
徴とする請求項５記載の振動型リニアアクチュエータ。6. The vibration type linear actuator according to claim 5, wherein the neutral of each permanent magnet is displaced from the center line of the iron core by the same distance in the moving member vibration direction.
設方向からなる平面上で、永久磁石のニュートラルと鉄
心併設方向に垂直なステータの鉄心の中心線が平行であ
ることを特徴とする請求項１〜３のいずれかの項に記載
の振動型リニアアクチュエータ。7. A center line of a permanent magnet of a permanent magnet and a center line of a stator core perpendicular to a direction in which the iron core is provided is parallel to a plane formed by the direction of the armature vibration and the direction in which the armature is provided perpendicularly to the armature vibration direction. Item 7. The vibration linear actuator according to any one of Items 1 to 3.
設方向からなる平面で、永久磁石のニュートラルと鉄心
併設方向に垂直なステータの鉄心の中心線が交わること
を特徴とする請求項１〜３のいずれかの項に記載の振動
型リニアアクチュエータ。8. A plane defined by a moving direction of the mover and a direction in which the mover is perpendicular to the direction in which the neutral of the permanent magnet and the center line of the core of the stator perpendicular to the direction in which the core is disposed intersect. 4. The vibration type linear actuator according to any one of the above items 3.
向が平行であり、平面内で永久磁石が可動子に斜めに取
り付けられることを特徴とする請求項８記載の振動型リ
ニアアクチュエータ。9. The vibration-type linear actuator according to claim 8, wherein the direction in which the stator has an iron core and the direction of vibration of the mover are parallel, and a permanent magnet is obliquely attached to the mover in a plane.
方向が平行であり、可動子振動方向と平行に永久磁石が
可動子に取り付けられており、平面内でニュートラルが
鉄心中心に対して斜めになっていることを特徴とする請
求項８記載の振動型リニアアクチュエータ。10. A direction in which an iron core of the stator is provided and a direction of vibration of the mover are parallel to each other. A permanent magnet is attached to the mover in parallel with the direction of vibration of the mover. The vibration type linear actuator according to claim 8, wherein
であり、ステータが平面内でニュートラルに対して斜め
に取り付けられることを特徴とする請求項８記載の振動
型リニアアクチュエータ。11. The vibration-type linear actuator according to claim 8, wherein the neutral and the mover vibrating directions are perpendicular to each other, and the stator is mounted obliquely with respect to the neutral in a plane.
端が、振動方向に垂直な可動子併設方向の同一直線上に
あることを特徴とする請求項８記載の振動型リニアアク
チュエータ。12. The vibration-type linear actuator according to claim 8, wherein the end of the neutral on the opposite side of each of the permanent magnets is on the same straight line in the direction in which the mover is perpendicular to the vibration direction.
の中心線とニュートラルが可動子振動方向に対して垂直
であり、各永久磁石の対向側で永久磁石端部のニュート
ラルが可動子の併設方向と交わり、各永久磁石の対向す
るニュートラルの端が、振動方向に垂直な可動子併設方
向の同一直線上にあることを特徴とする請求項５記載の
振動型リニアアクチュエータ。13. A center line of the iron core of the stator, which is perpendicular to the direction in which the iron cores are arranged, and the neutral are perpendicular to the direction of vibration of the mover. 6. The vibration-type linear actuator according to claim 5, wherein the opposite ends of the neutrals of the respective permanent magnets are on the same straight line in a direction in which the mover is arranged perpendicular to the vibration direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001126614A JP3736381B2 (en) | 2001-04-24 | 2001-04-24 | Vibration type linear actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001126614A JP3736381B2 (en) | 2001-04-24 | 2001-04-24 | Vibration type linear actuator |
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| Publication Number | Publication Date |
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| JP2002325415A true JP2002325415A (en) | 2002-11-08 |
| JP3736381B2 JP3736381B2 (en) | 2006-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2001126614A Expired - Fee Related JP3736381B2 (en) | 2001-04-24 | 2001-04-24 | Vibration type linear actuator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009240044A (en) * | 2008-03-26 | 2009-10-15 | Panasonic Electric Works Co Ltd | Electromagnetic actuator and electric shaver |
| JP2009240046A (en) * | 2008-03-26 | 2009-10-15 | Panasonic Electric Works Co Ltd | Electromagnetic actuator |
| JP2012125731A (en) * | 2010-12-17 | 2012-07-05 | Alps Electric Co Ltd | Vibration generator |
| JP2014135891A (en) * | 2011-02-23 | 2014-07-24 | Moving Magnet Technologies | Electromagnetic actuator with improved force density and application to electric shaver |
| CN105598797A (en) * | 2016-02-19 | 2016-05-25 | 胡建坤 | Electric grinding device |
| EP3355454A1 (en) * | 2017-01-26 | 2018-08-01 | LG Electronics Inc. | Moving core type reciprocating motor and compressor |
| EP3419151A4 (en) * | 2016-02-19 | 2019-02-20 | Hu, Jiankun | Oscillating motor and electric clippers |
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| CN105610296B (en) * | 2016-02-19 | 2018-09-07 | 胡建坤 | Diaphragm pump and power spraye |
| CN105743319B (en) * | 2016-02-19 | 2018-06-19 | 胡建坤 | Oscillating motor and electric hair cutter |
| CN105686335B (en) * | 2016-02-19 | 2018-09-07 | 胡建坤 | For the clean electric cleaning brush of organism body surface |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009240044A (en) * | 2008-03-26 | 2009-10-15 | Panasonic Electric Works Co Ltd | Electromagnetic actuator and electric shaver |
| JP2009240046A (en) * | 2008-03-26 | 2009-10-15 | Panasonic Electric Works Co Ltd | Electromagnetic actuator |
| JP2012125731A (en) * | 2010-12-17 | 2012-07-05 | Alps Electric Co Ltd | Vibration generator |
| JP2014135891A (en) * | 2011-02-23 | 2014-07-24 | Moving Magnet Technologies | Electromagnetic actuator with improved force density and application to electric shaver |
| CN105598797A (en) * | 2016-02-19 | 2016-05-25 | 胡建坤 | Electric grinding device |
| EP3419151A4 (en) * | 2016-02-19 | 2019-02-20 | Hu, Jiankun | Oscillating motor and electric clippers |
| US10827814B2 (en) | 2016-02-19 | 2020-11-10 | Jiankun Hu | Electric grinder |
| EP3355454A1 (en) * | 2017-01-26 | 2018-08-01 | LG Electronics Inc. | Moving core type reciprocating motor and compressor |
| US10971982B2 (en) | 2017-01-26 | 2021-04-06 | Lg Electronics Inc. | Moving core type reciprocating motor and compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3736381B2 (en) | 2006-01-18 |
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