JP3263161B2 - Moving magnet type reciprocating fluid machine - Google Patents
Moving magnet type reciprocating fluid machineInfo
- Publication number
- JP3263161B2 JP3263161B2 JP35468692A JP35468692A JP3263161B2 JP 3263161 B2 JP3263161 B2 JP 3263161B2 JP 35468692 A JP35468692 A JP 35468692A JP 35468692 A JP35468692 A JP 35468692A JP 3263161 B2 JP3263161 B2 JP 3263161B2
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- movable body
- reciprocating
- permanent magnets
- magnetic
- 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.)
- Expired - Fee Related
Links
Landscapes
- Electromagnetic Pumps, Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、流体ポンプ、コンプレ
ッサ等の用途に使用できる可動磁石式往復動流体機械に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable magnet type reciprocating fluid machine which can be used for applications such as a fluid pump and a compressor.
【０００２】[0002]
【従来の技術】従来、シリンダ内に設けられたピストン
を磁性アーマチュアに連結し、該磁性アーマチュアを固
定電磁回路によって電磁吸引して往動させ、かつばね等
の機械的復帰機構で復動させる如き電磁往復動流体機械
が知られている。2. Description of the Related Art Conventionally, a piston provided in a cylinder is connected to a magnetic armature, the magnetic armature is electromagnetically attracted by a fixed electromagnetic circuit, moved forward, and returned by a mechanical return mechanism such as a spring. Electromagnetic reciprocating fluid machines are known.
【０００３】[0003]
【発明が解決しようとする課題】ところで、磁性アーマ
チュアと固定電磁回路を組み合わせた従来の電磁往復動
流体機械は、ばね等の機械的復帰機構が必要不可欠で、
機構の複雑化や形状の大型化を招く問題がある。また、
ピストンの操作力を増大させるためには磁性アーマチュ
ア及び固定電磁回路が大型化してしまう。A conventional electromagnetic reciprocating fluid machine combining a magnetic armature and a fixed electromagnetic circuit requires a mechanical return mechanism such as a spring.
There is a problem that the mechanism becomes complicated and the shape becomes large. Also,
In order to increase the operating force of the piston, the magnetic armature and the fixed electromagnetic circuit become large.
【０００４】本発明は、上記の点に鑑み、機械的復帰機
構が不要で機構の簡略化ができ、小型にしてピストン、
ダイアフラム等の往復駆動体の操作力の大きな可動磁石
式往復動流体機械を提供することを目的とする。In view of the above, the present invention does not require a mechanical return mechanism and can simplify the mechanism.
It is an object of the present invention to provide a movable magnet type reciprocating fluid machine having a large operation force of a reciprocating drive such as a diaphragm.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明の可動磁石式往復動流体機械は、同極対向さ
れた少なくとも２個の永久磁石間に磁性体を設けて磁石
可動体を構成し、相互の位置関係が一定に規制された少
なくとも３連のコイルの内側に当該磁石可動体を移動自
在に設け、前記少なくとも３連のコイルを、各永久磁石
の磁極間を境にして相異なる方向に電流が流れる如く結
線し、前記少なくとも３連のコイルに対し一定位置関係
に設けられたケーシング室に対し往復駆動体を設けると
ともに、該往復駆動体を前記磁石可動体に連結した構成
としている。In order to achieve the above object, a movable magnet type reciprocating fluid machine according to the present invention comprises a magnetic movable body provided between at least two permanent magnets having the same polarity and opposed to each other. The magnet movable body is movably provided inside at least three coils in which the mutual positional relationship is regulated to be constant, and the at least three coils are separated by a boundary between magnetic poles of each permanent magnet. A structure in which currents flow in different directions, and a reciprocating drive is provided for a casing chamber provided in a fixed positional relationship with the at least three coils, and the reciprocating drive is connected to the magnet movable body. And
【０００６】[0006]
【作用】本発明の可動磁石式往復動流体機械において
は、ケーシング室に対し往復動自在なピストン、ダイア
フラム等を駆動する機構として、磁石可動体とコイル間
のフレミングの左手の法則に基づいて与えられる推力に
準ずる操作力を発生する往復動アクチュエータを用いて
いる。このため、交流電圧にて直接電磁往復動させられ
るため、ばね等の機械的復帰機構が不要で機構の簡略化
ができ、磁石可動体の往復運動の方向に垂直な方向の偏
りも発生せず、円滑に磁石可動体を作動させることがで
きる。しかも、前記磁石可動体として同極対向された少
なくとも２個の永久磁石間に磁性体を設けたものを用
い、各永久磁石の磁極間を境にして相異なる方向に電流
が流れる如く結線した少なくとも３連のコイルを用いて
おり、永久磁石の各磁極が発生する磁束を有効に利用し
て大きな操作力を得ることができる。In the movable magnet type reciprocating fluid machine of the present invention, a mechanism for driving a piston, a diaphragm and the like reciprocally movable with respect to the casing chamber is provided based on the Fleming left hand rule between the magnet movable body and the coil. A reciprocating actuator that generates an operating force corresponding to the thrust force is used. Therefore, since the electromagnetic reciprocating motion is directly performed by the AC voltage, a mechanical return mechanism such as a spring is not required, and the mechanism can be simplified, and there is no bias in the direction perpendicular to the reciprocating motion of the magnet movable body. The magnet movable body can be smoothly operated. In addition, at least two permanent magnets having the same polarity and provided with a magnetic material are used as the movable magnets, and are connected so that currents flow in different directions between magnetic poles of the respective permanent magnets. Since three coils are used, a large operating force can be obtained by effectively utilizing the magnetic flux generated by each magnetic pole of the permanent magnet.
【０００７】図３は本発明の可動磁石式往復動流体機械
に用いる往復動アクチュエータの動作原理を説明するた
めの概略構成図であり、図４は性能を比較するための往
復動アクチュエータの第１比較例、図５は第２比較例で
ある。FIG. 3 is a schematic configuration diagram for explaining the operation principle of a reciprocating actuator used in the movable magnet type reciprocating fluid machine of the present invention, and FIG. 4 is a first diagram of a reciprocating actuator for comparing performance. Comparative Example, FIG. 5 is a second comparative example.
【０００８】図３の本発明で用いる往復動アクチュエー
タにおいて、磁石可動体３は同極対向配置の２個の円柱
状永久磁石５Ａ，５Ｂと、これらの永久磁石５Ａ，５Ｂ
間に固着される円柱状軟磁性体６とを一体化したもので
あり、３連のコイル２Ａ，２Ｂ，２Ｃは、磁石可動体３
の外周側を周回する如く巻回され、磁石可動体３を構成
する永久磁石５Ａの左端、永久磁石５Ａ，５Ｂの同極対
向端、及び永久磁石５Ｂの右端の磁極からの磁束とそれ
ぞれ鎖交するように配置されている。これらのコイル２
Ａ，２Ｂ，２Ｃは永久磁石５Ａ，５Ｂの磁極間を境にし
て相異なる方向に電流が流れる如く結線されている（磁
極間の境は磁極と磁極の間であれば必ずしも磁極中間位
置になくともよい。）。なお、図示は省略してあるが、
コイル２Ａ，２Ｂ，２Ｃは通常磁石可動体３を軸方向に
移動自在にガイドするためのガイド筒体に装着される。
コイル２Ａ，２Ｂ，２Ｃと磁石可動体３との位置関係
は、当該磁石可動体３の停止時を含む大部分の可動位置
において、永久磁石磁極間を境にして各コイルに流れる
電流が相互に逆向きとなるように設定しておく。In the reciprocating actuator used in the present invention shown in FIG. 3, the magnet movable body 3 has two columnar permanent magnets 5A, 5B arranged in the same pole opposition, and these permanent magnets 5A, 5B.
The three-piece coils 2A, 2B, and 2C are formed by integrating a columnar soft magnetic body 6 fixed between them.
And the magnetic flux from the magnetic poles at the left end of the permanent magnet 5A, the same pole opposing ends of the permanent magnets 5A and 5B, and the right end of the permanent magnet 5B constituting the magnet movable body 3, respectively. It is arranged to be. These coils 2
A, 2B, and 2C are connected so that current flows in different directions with the boundary between the magnetic poles of the permanent magnets 5A and 5B (the boundary between the magnetic poles is not necessarily at the magnetic pole intermediate position if the magnetic pole is between the magnetic poles). May be.). Although illustration is omitted,
The coils 2A, 2B, 2C are usually mounted on guide cylinders for guiding the magnet movable body 3 movably in the axial direction.
The positional relationship between the coils 2A, 2B, 2C and the magnet movable body 3 is such that in most of the movable positions including when the magnet movable body 3 is stopped, the current flowing through each coil across the permanent magnet magnetic poles mutually. Set in the opposite direction.
【０００９】一方、図４の第１比較例において、１０は
軸方向に着磁した棒状の永久磁石からなる磁石可動体で
あり、両端面に磁極を有している。コイル１１Ａ，１１
Ｂは、磁石可動体１０の端部外周側をそれぞれ環状に周
回するように巻回され、隣合う部分に同極が発生するよ
うになっている。なお、図示は省略してあるが、コイル
１１Ａ，１１Ｂは通常磁石可動体１０を軸方向に移動自
在にガイドするためのガイド筒体に装着される。そし
て、磁石可動体１０の各端面からの磁束がそれぞれコイ
ル１１Ａ，１１Ｂと鎖交している。On the other hand, in the first comparative example of FIG. 4, reference numeral 10 denotes a magnet movable body made of a rod-shaped permanent magnet magnetized in the axial direction, and has magnetic poles on both end surfaces. Coil 11A, 11
B is wound around the outer periphery of the end portion of the magnet movable body 10 in a ring shape, and the same polarity is generated in adjacent portions. Although not shown, the coils 11A and 11B are usually mounted on a guide cylinder for guiding the magnet movable body 10 movably in the axial direction. The magnetic flux from each end face of the magnet movable body 10 is linked with the coils 11A and 11B, respectively.
【００１０】図５の第２比較例において、磁石可動体１
５は同極対向配置の２個の棒状永久磁石１６Ａ，１６Ｂ
と、これらの永久磁石１６Ａ，１６Ｂ間に固着される棒
状軟磁性体１７とを固着一体化したものであり、コイル
１８は磁石可動体１５の中間部外周側をそれぞれ環状に
周回するように巻回されている。なお、図示は省略して
あるが、コイル１８は通常磁石可動体１５を軸方向に移
動自在にガイドするためのガイド筒体に装着される。そ
して、磁石可動体１５の同極対向した永久磁石端面から
の磁束がコイル１８と鎖交している。In the second comparative example shown in FIG.
Reference numeral 5 denotes two rod-shaped permanent magnets 16A and 16B which are arranged in the same pole opposition.
And a bar-shaped soft magnetic body 17 fixed between the permanent magnets 16A and 16B. The coil 18 is wound around the outer periphery of the intermediate portion of the magnet movable body 15 in an annular manner. Has been turned. Although not shown, the coil 18 is usually mounted on a guide cylinder for guiding the magnet movable body 15 movably in the axial direction. The magnetic flux from the end face of the permanent magnet facing the same pole of the magnet movable body 15 is linked with the coil 18.
【００１１】ところで、第１比較例及び第２比較例にお
いて、磁石可動体１０，１５に発生する推力は、基本的
にはフレミングの左手の法則に基づいて与えられる推力
に準ずるものである（フレミングの左手の法則はコイル
に対して適用されるが、ここではコイルが固定のため、
磁石可動体にコイルに作用する力の反力としての推力が
発生する。）。したがって、推力に寄与するのは、磁石
可動体が有する永久磁石の磁束の垂直成分（永久磁石の
軸方向に直交する成分）である。By the way, in the first comparative example and the second comparative example, the thrust generated in the magnet movable bodies 10 and 15 basically conforms to the thrust given based on Fleming's left-hand rule (Fleming). Is applied to the coil, but here the coil is fixed, so
A thrust as a reaction force of the force acting on the coil is generated in the magnet movable body. ). Therefore, what contributes to the thrust is the vertical component (the component orthogonal to the axial direction of the permanent magnet) of the magnetic flux of the permanent magnet that the movable magnet has.
【００１２】そこで、１個の永久磁石の場合、あるいは
２個の同極対向配置の永久磁石の場合について、磁束の
垂直成分がどのようになるのかそれぞれ解析してみた。[0012] Then, in the case of one permanent magnet or two permanent magnets of the same polarity opposing arrangement, the vertical component of the magnetic flux was analyzed.
【００１３】図６は、単独の永久磁石の長手側面に沿っ
て表面磁束密度の垂直成分を磁場解析した結果を示す。
但し、永久磁石は希土類永久磁石であって、直径２.５m
m、長さ６mmで、永久磁石表面から０.２５〜０.４５mm
離れた位置を計測した。FIG. 6 shows the result of a magnetic field analysis of the vertical component of the surface magnetic flux density along the longitudinal side surface of a single permanent magnet.
However, the permanent magnet is a rare earth permanent magnet and has a diameter of 2.5 m.
m, length 6mm, 0.25 ~ 0.45mm from the surface of permanent magnet
The distance was measured.
【００１４】図７は、２個の永久磁石を同極対向配置と
し、かつ直接接合した場合において、２個の永久磁石の
長手側面に沿って表面磁束密度の垂直成分を磁場解析し
た結果を示す。但し、各永久磁石は希土類永久磁石であ
って、直径２.５mm、長さ３mm（２個で６mm）で、永久
磁石表面から０.２５〜０.４５mm離れた位置を計測し
た。FIG. 7 shows the results of a magnetic field analysis of the vertical component of the surface magnetic flux density along the longitudinal side surfaces of the two permanent magnets when two permanent magnets are arranged in the same polarity and are directly joined. . However, each permanent magnet was a rare earth permanent magnet, having a diameter of 2.5 mm and a length of 3 mm (6 mm for two pieces), and measured at a position 0.25 to 0.45 mm away from the surface of the permanent magnet.
【００１５】図８は、２個の永久磁石を同極対向配置と
し、かつ対向間隔を１mmとした場合において、２個の永
久磁石の長手側面に沿って表面磁束密度の垂直成分を磁
場解析した結果を示す。但し、各永久磁石は希土類永久
磁石であって、直径２.５mm、長さ３mmで、永久磁石表
面から０.２５〜０.４５mm離れた位置を計測した。FIG. 8 shows a magnetic field analysis of the vertical component of the surface magnetic flux density along the longitudinal side surfaces of the two permanent magnets when the two permanent magnets are arranged at the same pole opposition and the opposing interval is 1 mm. The results are shown. However, each permanent magnet was a rare earth permanent magnet, having a diameter of 2.5 mm and a length of 3 mm, and was measured at a position 0.25 to 0.45 mm away from the surface of the permanent magnet.
【００１６】図９は、２個の永久磁石を同極対向配置と
し、かつ対向間隔を２mmとした場合において、２個の永
久磁石の長手側面に沿って表面磁束密度の垂直成分を磁
場解析した結果を示す。但し、各永久磁石は希土類永久
磁石であって、直径２.５mm、長さ３mmで、永久磁石表
面から０.２５〜０.４５mm離れた位置を計測した。FIG. 9 shows a magnetic field analysis of the vertical component of the surface magnetic flux density along the longitudinal side surfaces of the two permanent magnets when the two permanent magnets are arranged in the same pole opposition and the opposing interval is 2 mm. The results are shown. However, each permanent magnet was a rare earth permanent magnet, having a diameter of 2.5 mm and a length of 3 mm, and was measured at a position 0.25 to 0.45 mm away from the surface of the permanent magnet.
【００１７】図１０は、２個の永久磁石を同極対向配置
とし、かつ対向間隔を３mmとした場合において、２個の
永久磁石の長手側面に沿って表面磁束密度の垂直成分を
磁場解析した結果を示す。但し、各永久磁石は希土類永
久磁石であって、直径２.５mm、長さ３mmで、永久磁石
表面から０.２５〜０.４５mm離れた位置を計測した。FIG. 10 shows a magnetic field analysis of the vertical component of the surface magnetic flux density along the longitudinal side surfaces of the two permanent magnets when the two permanent magnets are arranged at the same pole opposition and the opposing interval is 3 mm. The results are shown. However, each permanent magnet was a rare earth permanent magnet, having a diameter of 2.5 mm and a length of 3 mm, and was measured at a position 0.25 to 0.45 mm away from the surface of the permanent magnet.
【００１８】図１１は、２個の永久磁石を同極対向配置
とし、両永久磁石間に長さ１mmの軟磁性体を配置した場
合において、２個の永久磁石の長手側面に沿って表面磁
束密度の垂直成分を磁場解析した結果を示す。但し、各
永久磁石は希土類永久磁石であって、直径２.５mm、長
さ３mmで、永久磁石表面から０.２５〜０.４５mm離れた
位置を計測した。FIG. 11 shows a case where two permanent magnets are arranged in the same polarity facing each other and a soft magnetic material having a length of 1 mm is arranged between the two permanent magnets. The result of the magnetic field analysis of the vertical component of the density is shown. However, each permanent magnet was a rare earth permanent magnet, having a diameter of 2.5 mm and a length of 3 mm, and was measured at a position 0.25 to 0.45 mm away from the surface of the permanent magnet.
【００１９】図１２は、２個の永久磁石を同極対向配置
とし、両永久磁石間に長さ１mmの軟磁性体を配置し、さ
らに２個の永久磁石の外周に対向させて軟磁性体ヨーク
を配設した場合において、２個の永久磁石の長手側面に
沿って表面磁束密度の垂直成分を磁場解析した結果を示
す。但し、各永久磁石は希土類永久磁石であって、直径
２.５mm、長さ３mmで、ヨークは永久磁石を取り囲む円
筒形状で厚み０.５mm、長さ１０mmで永久磁石外周から
１.２５mm離間した位置となっており、表面磁束密度の
垂直成分は永久磁石表面から０.２５〜０.４５mm離れた
位置を計測した。FIG. 12 shows two permanent magnets having the same polarity facing each other, a soft magnetic body having a length of 1 mm disposed between the two permanent magnets, and further facing the outer periphery of the two permanent magnets. The result of performing a magnetic field analysis of the vertical component of the surface magnetic flux density along the longitudinal side surfaces of the two permanent magnets when the yoke is provided is shown. However, each permanent magnet is a rare earth permanent magnet, having a diameter of 2.5 mm and a length of 3 mm, a yoke having a cylindrical shape surrounding the permanent magnet, a thickness of 0.5 mm, a length of 10 mm and a distance of 1.25 mm from the outer periphery of the permanent magnet. The vertical component of the surface magnetic flux density was measured at a position 0.25 to 0.45 mm away from the surface of the permanent magnet.
【００２０】上述したように、磁石可動体に発生する推
力は、基本的にはフレミングの左手の法則に基づいて与
えられる推力に準ずるものであり、コイルと鎖交する永
久磁石の磁束の垂直成分（永久磁石の軸方向に直交する
成分）が多いことが望まれるが、図４の第１比較例で
は、表面磁束密度の垂直成分は図６のようになり、図７
乃至図１２の２個の永久磁石を同極対向配置とした場合
に比較して垂直成分が少ないことが判明した。このため
図４の第１比較例の構成では、推力の向上に限界があ
る。例えば、磁石可動体１０を直径２.５mm、長さ６mm
の希土類永久磁石で構成し、２個のコイル１１Ａ，１１
Ｂの隣合う部分に同極が発生するように各コイル１１
Ａ，１１Ｂに４０ｍＡの電流を流したときに発生する推
力Ｆ１は４.７（gf）であった。As described above, the thrust generated in the magnet movable body basically conforms to the thrust given based on Fleming's left-hand rule, and the vertical component of the magnetic flux of the permanent magnet interlinking with the coil. It is desired that there be many (components orthogonal to the axial direction of the permanent magnet), but in the first comparative example of FIG. 4, the vertical component of the surface magnetic flux density is as shown in FIG.
It has been found that the vertical component is smaller than that in the case where the two permanent magnets shown in FIGS. Therefore, in the configuration of the first comparative example in FIG. 4, there is a limit to the improvement of the thrust. For example, the magnet movable body 10 is 2.5 mm in diameter and 6 mm long.
And two coils 11A, 11A
B so that the same polarity is generated in the adjacent portion of B.
A thrust F1 generated when a current of 40 mA flows through A and 11B was 4.7 (gf).
【００２１】また、図５の第２比較例では、２個の同極
対向の永久磁石間に軟磁性体を配した磁石可動体１５を
用いており、磁束密度の垂直成分は図１１に示す如くな
り、同極対向の永久磁石１６Ａ，１６Ｂの磁極から出る
磁束は１個の永久磁石の場合（図６参照）や２個の永久
磁石のみの場合（図７乃至図１０参照）よりも多くなる
が、コイルが磁石可動体１５の中間部を囲む１個のみで
あり、磁石可動体１５の両端面の磁極による磁束は有効
に利用していない嫌いがある。このため、図５の第２比
較例の場合も推力の向上が難しかった。例えば、図５の
第２比較例において磁石可動体１５として直径２.５m
m、長さ３mmの希土類永久磁石を２個用い（希土類永久
磁石の性能は第１比較例と同じとする）、かつ両者間に
長さ１mmの軟磁性体を配置したものを用い、図４の第１
比較例と同じ消費電力となるように作成したコイル１８
に４０ｍＡの電流を流し、第１比較例と同じ消費電力と
したときに発生する推力Ｆ２は５.６（gf）であった。In the second comparative example shown in FIG. 5, a magnet movable body 15 in which a soft magnetic material is disposed between two permanent magnets having the same polarity is used, and the vertical component of the magnetic flux density is shown in FIG. Thus, the magnetic flux emitted from the magnetic poles of the permanent magnets 16A and 16B opposed to each other with the same polarity is larger than in the case of one permanent magnet (see FIG. 6) or in the case of only two permanent magnets (see FIGS. 7 to 10). However, there is only one coil surrounding the intermediate portion of the movable magnet 15, and there is a dislike that the magnetic flux generated by the magnetic poles on both end surfaces of the movable magnet 15 is not effectively used. For this reason, it was difficult to improve the thrust also in the case of the second comparative example in FIG. For example, in the second comparative example of FIG.
FIG. 4 shows an example in which two rare-earth permanent magnets having a length of 3 mm and a length of 3 mm were used (the performance of the rare-earth permanent magnets was assumed to be the same as that of the first comparative example), and a soft magnetic material having a length of 1 mm was disposed therebetween. First
Coil 18 created to have the same power consumption as the comparative example
And a thrust F2 generated when the same power consumption as that of the first comparative example was applied, was 5.6 (gf).
【００２２】一方、図３の本発明で用いる往復動アクチ
ュエータにおける磁石可動体３の構造は、図１１のよう
に２個の永久磁石を同極対向させかつ永久磁石間に軟磁
性体を配置したものである。この図１１のときは軟磁性
***置に相当する領域Ｑの表面磁束密度の垂直成分は、
軟磁性体の無い図７乃至図１０よりも優れている（磁束
密度０.３Ｔ以上のピークの幅が広くかつピークが高
い。）。On the other hand, the structure of the magnet movable body 3 in the reciprocating actuator used in the present invention shown in FIG. 3 is such that two permanent magnets have the same pole opposition and a soft magnetic body is arranged between the permanent magnets as shown in FIG. Things. In the case of FIG. 11, the vertical component of the surface magnetic flux density in the region Q corresponding to the position of the soft magnetic material is:
7 to 10 without the soft magnetic material (the width of the peak with a magnetic flux density of 0.3 T or more is wide and the peak is high).
【００２３】このように、２個の永久磁石５Ａ，５Ｂを
同極対向させかつ永久磁石間に軟磁性体６を設けた磁石
可動体３は、フレミングの左手の法則に基づく推力に寄
与できる磁石可動体３の長手方向に垂直な磁束成分を大
きくでき、かつ３連のコイル２Ａ，２Ｂ，２Ｃは永久磁
石の全磁極の磁束と有効に鎖交するので、３連のコイル
２Ａ，２Ｂ，２Ｃに交互に逆極性の磁界を発生する向き
に電流を通電することにより、比較例１，２では到達し
得ない大きな推力を発生することができる。各コイルの
電流を反転させれば磁石可動体３の推力の向きも反転す
る。交流電流を流した場合には、一定周期で振動を繰り
返す往復動アクチュエータとして働く。As described above, the magnet movable body 3 in which the two permanent magnets 5A and 5B are opposed to each other with the same polarity and the soft magnetic body 6 is provided between the permanent magnets can contribute to the thrust based on Fleming's left-hand rule. The magnetic flux component perpendicular to the longitudinal direction of the movable body 3 can be increased, and the three coils 2A, 2B, 2C are effectively linked to the magnetic flux of all the magnetic poles of the permanent magnet, so that the three coils 2A, 2B, 2C By applying a current in a direction in which a magnetic field of the opposite polarity is generated alternately, a large thrust that cannot be reached in Comparative Examples 1 and 2 can be generated. When the current of each coil is reversed, the direction of the thrust of the magnet movable body 3 is also reversed. When an alternating current is passed, it acts as a reciprocating actuator that repeats vibration at a constant cycle.
【００２４】本発明で用いる往復動アクチュエータに係
る図３の場合、例えば、磁石可動体３として直径２.５m
m、長さ３mmの希土類永久磁石を２個用い（希土類永久
磁石の性能は第１比較例と同じとする）、かつ両者間に
長さ１mmの軟磁性体を配置したものを用い、図４、図５
の第１、第２比較例と同じ消費電力となるように作成し
た３連のコイル２Ａ，２Ｂ，２Ｃに４０ｍＡの電流を流
し、同じ消費電力としたときに発生する推力Ｆ３は６.
７（gf）であった。これは、同一消費電力の第１比較例
の場合の約１.４２倍の推力であり、また第２比較例の
約１.２倍の推力であり、第１及び第２比較例に比較し
て格段に優れていることが判る。In the case of FIG. 3 relating to the reciprocating actuator used in the present invention, for example, the magnet movable body 3 has a diameter of 2.5 m.
FIG. 4 shows an example in which two rare-earth permanent magnets having a length of 3 mm and a length of 3 mm were used (the performance of the rare-earth permanent magnets was assumed to be the same as that of the first comparative example), and a soft magnetic material having a length of 1 mm was disposed therebetween. , FIG.
The thrust F3 generated when a current of 40 mA flows through the triple coils 2A, 2B, and 2C created to have the same power consumption as those of the first and second comparative examples and the power consumption is the same is 6.
7 (gf). This is about 1.42 times the thrust of the first comparative example with the same power consumption, and about 1.2 times the thrust of the second comparative example, and is smaller than the first and second comparative examples. You can see that it is much better.
【００２５】図１３の曲線（イ）は図３（ヨーク無し）
の場合の磁石可動体３の軸方向変位量と推力（gf）との
関係を示す。但し、永久磁石の寸法、特性は図１１に示
したものとするとともに、磁石可動体３の中間点が中央
のコイル２Ｂの中間点に位置するときを変位量零とし、
各コイルの電流は４０ｍＡとした。The curve (a) in FIG. 13 is FIG. 3 (without yoke).
The relationship between the axial displacement of the magnet movable body 3 and the thrust (gf) in the case of (1) is shown. However, the dimensions and characteristics of the permanent magnet are as shown in FIG. 11, and the displacement is zero when the intermediate point of the magnet movable body 3 is located at the intermediate point of the center coil 2B.
The current of each coil was 40 mA.
【００２６】このように、本発明で用いる往復動アクチ
ュエータは、同極対向の永久磁石間に軟磁性体を挟んだ
構造体で磁石可動体を構成しており、永久磁石の着磁方
向（軸方向）に垂直な磁束密度成分を充分大きくできか
つ永久磁石の全ての磁極の発生する磁束を有効利用でき
るので、磁石可動体を取り巻くように周回した少なくと
も３連のコイルに流れる電流との間のフレミングの左手
の法則に基づく推力を充分大きくでき、小型、小電流で
大きな推力を得ることができることがわかる。さらに、
各コイルに交流電流を流すことで磁石可動体の往復運動
が可能であり、磁石可動体をピストンに連結することに
より、ばね等の機械的復帰機構が無くとも円滑な往復運
動が可能で、機構の簡略化も可能である。As described above, in the reciprocating actuator used in the present invention, the magnet movable body is constituted by the structure in which the soft magnetic material is sandwiched between the permanent magnets of the same polarity, and the magnetizing direction (axial Direction) can be made sufficiently large and the magnetic flux generated by all the magnetic poles of the permanent magnet can be used effectively, so that the current flowing through at least three coils surrounding the movable magnet can be reduced. It can be seen that the thrust based on Fleming's left hand rule can be made sufficiently large, and a large thrust can be obtained with a small size and small current. further,
Reciprocating motion of the movable magnet is possible by passing an alternating current through each coil. By connecting the movable magnet to the piston, smooth reciprocating motion is possible without a mechanical return mechanism such as a spring. Can also be simplified.
【００２７】[0027]
【実施例】以下、本発明に係る可動磁石式往復動流体機
械の実施例を図面に従って説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a movable magnet type reciprocating fluid machine according to the present invention will be described below with reference to the drawings.
【００２８】図１及び図２は本発明の第１実施例を示
す。これらのにおいて、１０は往復動アクチュエータ、
２０はケーシング室としてのシリンダ室、３０は該シリ
ンダ室に摺動自在に設けられた往復駆動体としてのピス
トンであり、往復動アクチュエータ１０にて駆動される
ものである。FIGS. 1 and 2 show a first embodiment of the present invention. In these, 10 is a reciprocating actuator,
Reference numeral 20 denotes a cylinder chamber as a casing chamber, and reference numeral 30 denotes a piston as a reciprocating drive member slidably provided in the cylinder chamber, which is driven by the reciprocating actuator 10.
【００２９】往復動アクチュエータ１０は、軟磁性体の
円筒状ヨーク１と、該円筒状ヨーク１の内側に配置され
た３連のコイル２Ａ，２Ｂ，２Ｃと、磁石可動体３とを
有し、３連のコイル２Ａ，２Ｂ，２Ｃは磁石可動体３を
摺動自在に案内するためのガイド筒体４を構成する絶縁
樹脂等の絶縁部材（非磁性材）で円筒状ヨーク１に固着
されている。磁石可動体３は、同極対向配置の２個の円
柱状希土類永久磁石５Ａ，５Ｂと、これらの永久磁石５
Ａ，５Ｂ間に配置される円柱状軟磁性体６と、各永久磁
石５Ａ，５Ｂの外側端面にそれぞれ配置される軸部品８
Ａ，８Ｂと、非磁性筒状ホルダ７とからなり、それらの
永久磁石５Ａ，５Ｂ、軟磁性体６及び軸部品８Ａ，８Ｂ
の円板状部９Ａ，９Ｂは筒状ホルダ７内に収納され接着
剤、あるいはホルダ端部のかしめ等で固定されている。
前記３連のコイル２Ａ，２Ｂ，２Ｃは永久磁石５Ａ，５
Ｂの磁極間を境にして相異なる方向に電流が流れる如く
結線されている。すなわち、中央のコイル２Ｂは軟磁性
体６及び永久磁石５Ａ，５ＢのＮ極を含む端部を囲み、
両側のコイル２Ａ，２Ｃは、永久磁石５Ａ，５ＢのＳ極
を含む端部をそれぞれ囲むことができるようになってお
り、かつ中央のコイル２Ｂに流れる電流の向きと、両側
のコイル２Ａ，２Ｃの電流の向きとは逆向きである（図
１の各コイルに付したＮ，Ｓを参照）。The reciprocating actuator 10 has a cylindrical yoke 1 made of a soft magnetic material, three coils 2A, 2B and 2C arranged inside the cylindrical yoke 1, and a magnet movable body 3. The triple coils 2A, 2B, 2C are fixed to the cylindrical yoke 1 with an insulating member (non-magnetic material) such as an insulating resin constituting a guide cylinder 4 for slidably guiding the magnet movable body 3. I have. The magnet movable body 3 is composed of two columnar rare earth permanent magnets 5A and 5B arranged in the same pole opposition, and these permanent magnets 5A and 5B.
A and 5B, and a cylindrical soft magnetic body 6 disposed between the permanent magnets 5A and 5B, and a shaft component 8 disposed on an outer end surface of each of the permanent magnets 5A and 5B.
A, 8B and the non-magnetic cylindrical holder 7, and their permanent magnets 5A, 5B, soft magnetic body 6, and shaft parts 8A, 8B
The disk-shaped portions 9A and 9B are accommodated in the cylindrical holder 7 and fixed by an adhesive or a caulking of the holder end.
The three coils 2A, 2B, 2C are composed of permanent magnets 5A, 5A.
The wires are connected such that currents flow in different directions from the boundary between the magnetic poles of B. That is, the center coil 2B surrounds the ends including the N poles of the soft magnetic body 6 and the permanent magnets 5A and 5B,
The coils 2A, 2C on both sides can surround the ends including the S poles of the permanent magnets 5A, 5B, respectively, and the direction of the current flowing through the center coil 2B, and the coils 2A, 2C on both sides. (See N and S attached to each coil in FIG. 1).
【００３０】前記磁石可動体３を摺動自在に案内するた
めのガイド筒体４の左側に前記シリンダ室２０が形成さ
れており、右側に前記軸部品８Ｂの軸１１Ｂが摺動自在
に嵌合する軸受穴２１が形成されている。そして、前記
軸部品８Ａの軸１１Ａの先端面に前記ピストン３０がボ
ルト３１で固定されている。ピストン３０の端面には吸
入穴３２が形成されており、該吸入穴３２を閉塞するゴ
ム等の可撓性板材の吸入弁３３が前記ボルト３１でピス
トン３０の端面に重なるように取り付けられている。前
記シリンダ室２０の右寄り位置に連通するように前記円
筒状ヨーク１及びガイド筒体４を貫通する吸気穴３４
が、左寄り位置に連通するように前記円筒状ヨーク１及
びガイド筒体４を貫通する排気穴３５が形成されてい
る。なお、シリンダ室２０の左側開口を密閉するために
Ｏリング３６を介して蓋体３７が前記円筒状ヨーク１に
固着されている。The cylinder chamber 20 is formed on the left side of the guide cylinder 4 for slidably guiding the magnet movable body 3, and the shaft 11B of the shaft part 8B is slidably fitted on the right side. The bearing hole 21 is formed. Then, the piston 30 is fixed to a tip end surface of the shaft 11A of the shaft component 8A with a bolt 31. A suction hole 32 is formed in an end face of the piston 30, and a suction valve 33 made of a flexible plate material such as rubber for closing the suction hole 32 is attached to the end face of the piston 30 with the bolt 31. . An intake hole 34 penetrating through the cylindrical yoke 1 and the guide cylinder 4 so as to communicate with a position on the right side of the cylinder chamber 20.
However, an exhaust hole 35 penetrating through the cylindrical yoke 1 and the guide cylinder 4 is formed so as to communicate with the leftward position. A lid 37 is fixed to the cylindrical yoke 1 via an O-ring 36 in order to seal the left opening of the cylinder chamber 20.
【００３１】この第１実施例では、往復動アクチュエー
タ１０の各コイル２Ａ，２Ｂ，２Ｃの外周側に軟磁性体
の円筒状ヨーク１が設けられているため、磁石可動体３
の表面磁束密度の垂直成分は、図１２に示す如く、さら
に増大する。このため、フレミングの左手の法則に基づ
く推力に寄与できる磁石可動体３の長手方向に垂直な磁
束成分を大きくでき、磁石可動体３の周囲を環状に巻回
する３連のコイル２Ａ，２Ｂ，２Ｃに交互に逆極性の磁
界を発生する向きに電流を通電することにより、いっそ
う大きな推力を発生することができる。例えば、磁石可
動体３として直径２.５mm、長さ３mmの希土類永久磁石
を２個用い（希土類永久磁石の性能は第１比較例と同じ
とする）、かつ両者間に長さ１mmの軟磁性体を配置した
ものを用い、図４、図５の第１、第２比較例と同じ消費
電力となるように作成した３連のコイル２Ａ，２Ｂ，２
Ｃに４０ｍＡの電流を流し、同じ消費電力としたときに
発生する推力Ｆ４は８.０（gf）であった。推力Ｆ４の
向きは、図１の極性では、磁石可動体３が右方向に移動
する向きであり、各コイルの電流を反転させれば磁石可
動体３の推力の向きも反転する。したがって、各コイル
に交流電流を流すことで、一定周期で往復運動を繰り返
す小型で推力の大きな往復動アクチュエータとして機能
する。In the first embodiment, since the cylindrical yoke 1 made of a soft magnetic material is provided on the outer peripheral side of each of the coils 2A, 2B, 2C of the reciprocating actuator 10, the magnet movable member 3 is provided.
The vertical component of the surface magnetic flux density further increases as shown in FIG. For this reason, the magnetic flux component perpendicular to the longitudinal direction of the magnet movable body 3 that can contribute to the thrust based on Fleming's left hand rule can be increased, and the triple coils 2A, 2B, A larger thrust can be generated by applying a current in a direction in which a magnetic field of the opposite polarity is alternately generated in 2C. For example, two rare-earth permanent magnets having a diameter of 2.5 mm and a length of 3 mm are used as the magnet movable body 3 (the performance of the rare-earth permanent magnet is the same as that of the first comparative example), and a soft magnet having a length of 1 mm is provided between the two. The coils 3A, 2B, and 2 are formed by using a coil having a body disposed therein so as to have the same power consumption as the first and second comparative examples of FIGS.
When a current of 40 mA was passed through C and the power consumption was the same, the thrust F4 generated was 8.0 (gf). The direction of the thrust F4 is the direction in which the magnet movable body 3 moves to the right in the polarity of FIG. 1, and if the current of each coil is reversed, the direction of the thrust of the magnet movable body 3 is also reversed. Therefore, by flowing an alternating current to each coil, the coil functions as a small-sized and large-thrust reciprocating actuator that repeats a reciprocating motion at a constant cycle.
【００３２】図１３の曲線（ロ）は第１実施例（但し、
永久磁石及びヨークの寸法、配置及び永久磁石の特性は
図１２の通り）の場合の磁石可動体３の軸方向変位量と
推力（gf）との関係であって変位量零の点から離れる方
向に磁石可動体が動作するときを示す。また、曲線
（ハ）は第１実施例（ヨーク有り）の場合の磁石可動体
３の軸方向変位量と推力（gf）との関係であって変位量
零の点に近付く方向に動作するときを示す。但し、磁石
可動体３の中間点が中央のコイル２Ｂの中間点に位置す
るときを変位量零とし、各コイルの電流は４０ｍＡとし
た。このように、磁石可動体３が変位量零の点に近付く
か又は離れるかによって推力が相違するのは、磁石可動
体３の永久磁石の磁極とヨーク１との間に磁石可動体３
を変位量零点に戻す磁気吸引力が働いているからであ
る。The curve (b) in FIG. 13 shows the first embodiment (however,
The dimensions and arrangement of the permanent magnet and the yoke and the characteristics of the permanent magnet are as shown in FIG. 12). The relationship between the axial displacement of the magnet movable body 3 and the thrust (gf) in the direction away from the zero displacement point Fig. 5 shows the state when the magnet movable body operates. The curve (c) represents the relationship between the axial displacement of the magnet movable body 3 and the thrust (gf) in the case of the first embodiment (with yoke), and when the magnet moves in a direction approaching the zero displacement point. Is shown. However, when the intermediate point of the magnet movable body 3 was located at the intermediate point of the center coil 2B, the displacement amount was set to zero, and the current of each coil was set to 40 mA. As described above, the thrust differs depending on whether the magnet movable body 3 approaches or moves away from the point where the displacement amount is zero, because the magnet movable body 3 is located between the magnetic pole of the permanent magnet of the magnet movable body 3 and the yoke 1.
Is returned to the displacement zero point.
【００３３】上記したように、第１実施例における往復
動アクチュエータ１０は小型で推力の大きなものであ
り、これでシリンダ室２０内のピストン３０を往復動さ
せることで小型で効率の良いエアーポンプを実現でき
る。すなわち、磁石可動体３が図１の右方向に動くと
き、吸入弁３３が開きシリンダ室２０の左側に吸気穴３
４及び吸入穴３２を介して空気を吸入し、磁石可動体３
の左方向の動きでシリンダ室左側の空気を圧縮して排気
穴３５を介し送出することができる。As described above, the reciprocating actuator 10 in the first embodiment has a small size and a large thrust. By reciprocating the piston 30 in the cylinder chamber 20, a small and efficient air pump can be obtained. realizable. That is, when the magnet movable body 3 moves to the right in FIG.
Air is sucked in through the suction hole 4 and the suction hole 32, and the magnet movable body 3 is sucked.
The air on the left side of the cylinder chamber can be compressed and sent out through the exhaust hole 35 by the leftward movement of.
【００３４】図１４は本発明の第２実施例を示す。この
場合、シリンダ室及びピストン等を往復動アクチュエー
タ１０の磁石可動体３の両側に設けて、２個のポンプ部
４０Ａ，４０Ｂを構成している。図１４において、往復
動アクチュエータ１０の構成は前述の第１実施例と実質
的に同じであり、前記磁石可動体３を摺動自在に案内す
るためのガイド筒体４の左側にポンプ部４０Ａが構成さ
れている。すなわち、ガイド筒体４の左側にシリンダ室
２０Ａが形成されており、軸部品８Ａの軸１１Ａの先端
面にピストン３０Ａがボルト３１Ａで固定されている。
ピストン３０Ａの端面には吸入穴３２Ａが形成されてお
り、該吸入穴３２Ａを閉塞するゴム等の可撓性板材の吸
入弁３３Ａが前記ボルト３１Ａでピストン３０Ａの端面
に重なるように取り付けられている。また、シリンダ室
２０Ａの左側開口を密閉するためにＯリング３６を介し
て蓋体３７Ａが前記円筒状ヨーク１に固着されている。
前記シリンダ室２０Ａの右寄り位置に連通するように円
筒状ヨーク１及びガイド筒体４を貫通する吸気穴３４Ａ
が、シリンダ室２０Ａの側壁を成す蓋体３７Ａに排気穴
３５Ａがそれぞれ形成されている。FIG. 14 shows a second embodiment of the present invention. In this case, two pump sections 40A and 40B are configured by providing a cylinder chamber, a piston, and the like on both sides of the magnet movable body 3 of the reciprocating actuator 10. In FIG. 14, the configuration of the reciprocating actuator 10 is substantially the same as that of the first embodiment, and a pump section 40A is provided on the left side of the guide cylinder 4 for slidably guiding the magnet movable body 3. It is configured. That is, the cylinder chamber 20A is formed on the left side of the guide cylinder 4, and the piston 30A is fixed to the distal end surface of the shaft 11A of the shaft component 8A with the bolt 31A.
A suction hole 32A is formed in the end face of the piston 30A, and a suction valve 33A made of a flexible plate material such as rubber for closing the suction hole 32A is attached to the end face of the piston 30A with the bolt 31A. . A lid 37A is fixed to the cylindrical yoke 1 via an O-ring 36 in order to seal the left opening of the cylinder chamber 20A.
An intake hole 34A penetrating through the cylindrical yoke 1 and the guide cylinder 4 so as to communicate with a position on the right side of the cylinder chamber 20A.
However, exhaust holes 35A are respectively formed in the lid 37A forming the side wall of the cylinder chamber 20A.
【００３５】同様に、前記磁石可動体３を摺動自在に案
内するためのガイド筒体４の右側にポンプ部４０Ｂが構
成されている。すなわち、ガイド筒体４の右側にシリン
ダ室２０Ｂが形成されており、軸部品８Ｂの軸１１Ｂの
先端面にピストン３０Ｂがボルト３１Ｂで固定されてい
る。ピストン３０Ｂの端面には吸入穴３２Ｂが形成され
ており、該吸入穴３２Ｂを閉塞するゴム等の可撓性板材
の吸入弁３３Ｂが前記ボルト３１Ｂでピストン３０Ｂの
端面に重なるように取り付けられている。また、シリン
ダ室２０Ｂの左側開口を密閉するためにＯリング３６を
介して蓋体３７Ｂが前記円筒状ヨーク１に固着されてい
る。前記シリンダ室２０Ｂの左寄り位置に連通するよう
に前記円筒状ヨーク１及びガイド筒体４を貫通する吸気
穴３４Ｂが、シリンダ室２０Ｂの側壁を成す蓋体３７Ｂ
に排気穴３５Ｂが形成されている。Similarly, a pump section 40B is formed on the right side of the guide cylinder 4 for slidably guiding the magnet movable body 3. That is, the cylinder chamber 20B is formed on the right side of the guide cylinder 4, and the piston 30B is fixed to the distal end surface of the shaft 11B of the shaft component 8B with the bolt 31B. A suction hole 32B is formed in the end face of the piston 30B, and a suction valve 33B made of a flexible plate material such as rubber for closing the suction hole 32B is attached to the end face of the piston 30B with the bolt 31B. . A lid 37B is fixed to the cylindrical yoke 1 via an O-ring 36 in order to seal the left opening of the cylinder chamber 20B. An intake hole 34B penetrating through the cylindrical yoke 1 and the guide cylinder 4 so as to communicate with a leftward position of the cylinder chamber 20B is provided with a lid 37B forming a side wall of the cylinder chamber 20B.
Is formed with an exhaust hole 35B.
【００３６】この第２実施例によれば、往復動アクチュ
エータ１０で２個のポンプ部４０Ａ，４０Ｂを効率的に
駆動することができる。According to the second embodiment, the two pump sections 40A and 40B can be efficiently driven by the reciprocating actuator 10.
【００３７】図１５は本発明の第３実施例を示す。この
場合、ピストン側には弁を設けずに、流体吸入口及び流
体吐出口にそれぞれ逆止弁を設けている。図１５におい
て、往復動アクチュエータ１０の構成は前述の第１実施
例と同じであり、磁石可動体３を摺動自在に案内するた
めのガイド筒体４の左側にシリンダ室２０が形成されて
おり、右側に軸部品８Ｂの軸１１Ｂが摺動自在に嵌合す
る軸受穴２１が形成されている。そして、軸部品８Ａの
軸１１Ａの先端面にピストン３０がボルト３１で固定さ
れている。また、シリンダ室２０の左側開口を密閉する
如くＯリング３６を介して連結ブロック４１が前記円筒
状ヨーク１に固着されている。該連結ブロック４１は流
体吸入側から吐出側に貫通した流体通路４２を有すると
ともに、該流体通路４２とシリンダ室２０とを連通させ
る連通路４３を有している。流体通路４２の一方に連通
する流体吸入口４４を有する吸入口部品４５が前記連結
ブロック４１に螺着され、流体通路４２の他方に連通す
る流体吐出口４６を有する吐出口部品４７が前記連結ブ
ロック４１に螺着されている。そして、吸入口部品４５
の内部にはシール材が設けられた弁座部５０が形成さ
れ、さらに弁体としての鋼球５１、鋼球５１に当接する
ばね受け５２、圧縮ばね５３、ばね押え５４、吸入口部
品４５の内面に固定される止め輪５５が配設されてい
る。弁体としての鋼球５１は圧縮ばね５３で弁座部５０
に圧接するように付勢されており、逆流防止のための逆
止弁を構成している。同様に、吐出口部品４７の内部に
は、シール材が設けられた弁座部６０が形成され、さら
に弁体としての鋼球６１、鋼球６１に当接するばね受け
６２、圧縮ばね６３、ばね押え６４、吐出口部品４７の
内面に固定される止め輪６５が配設されている。弁体と
しての鋼球６１は圧縮ばね６３で弁座部６０に圧接する
ように付勢されており、逆流防止のための逆止弁を構成
している。FIG. 15 shows a third embodiment of the present invention. In this case, no check valve is provided at each of the fluid suction port and the fluid discharge port without providing a valve on the piston side. In FIG. 15, the configuration of the reciprocating actuator 10 is the same as that of the first embodiment, and a cylinder chamber 20 is formed on the left side of the guide cylinder 4 for slidably guiding the magnet movable body 3. On the right side, a bearing hole 21 is formed in which the shaft 11B of the shaft component 8B is slidably fitted. Then, the piston 30 is fixed to the distal end surface of the shaft 11A of the shaft component 8A with a bolt 31. A connecting block 41 is fixed to the cylindrical yoke 1 via an O-ring 36 so as to seal the left opening of the cylinder chamber 20. The connection block 41 has a fluid passage 42 penetrating from the fluid suction side to the discharge side, and has a communication passage 43 for communicating the fluid passage 42 with the cylinder chamber 20. A suction port component 45 having a fluid suction port 44 communicating with one of the fluid passages 42 is screwed to the connection block 41, and a discharge port component 47 having a fluid discharge port 46 communicating with the other of the fluid passage 42 is connected to the connection block 41. 41 is screwed. Then, the suction port part 45
A valve seat portion 50 provided with a sealing material is formed inside the inside, and a steel ball 51 as a valve body, a spring receiver 52 abutting on the steel ball 51, a compression spring 53, a spring retainer 54, and a suction port part 45 are formed. A retaining ring 55 fixed to the inner surface is provided. A steel ball 51 as a valve body is compressed by a compression spring 53 into a valve seat 50.
, And constitutes a check valve for preventing backflow. Similarly, a valve seat portion 60 provided with a sealing material is formed inside the discharge port component 47, and further includes a steel ball 61 as a valve body, a spring receiver 62 abutting on the steel ball 61, a compression spring 63, and a spring. A presser ring 64 and a retaining ring 65 fixed to the inner surface of the discharge port component 47 are provided. The steel ball 61 as a valve body is urged by a compression spring 63 so as to press against the valve seat portion 60, and constitutes a check valve for preventing backflow.
【００３８】この第３実施例においても、ピストン３０
を往復動させ、ピストン３０で隔離されたシリンダ室２
０の左側の流体導入室７０の体積を増減することで、流
体の吸入口４４からの流体の吸入、吐出口４６からの流
体の吐出を交互に繰り返し実行することができる。Also in the third embodiment, the piston 30
Is reciprocated, and the cylinder chamber 2 isolated by the piston 30
By increasing or decreasing the volume of the fluid introduction chamber 70 on the left side of 0, fluid suction from the fluid suction port 44 and fluid discharge from the discharge port 46 can be alternately and repeatedly executed.
【００３９】図１６は本発明の第４実施例を示す。この
場合は、ピストンに代えて往復動するダイアフラムを使
用している。すなわち、往復動アクチュエータ１０の構
成は前述の第１実施例と同じであり、磁石可動体３を摺
動自在に案内するためのガイド筒体４の左側にケーシン
グ室８０の右部分が形成されており、ケーシング室８０
の左部分を構成する有蓋筒体８１の端面と前記ガイド筒
体４の端面間に可撓性（弾性）を持つ薄板状のダイアフ
ラム８２の周縁部が挟持、固定されている。有蓋筒体８
１は前記円筒状ヨーク１のフランジ部に固着されてお
り、吸気穴８３及び排気穴８４を有している。そして、
吸気穴８３の内側、及び排気穴８４の外側にそれぞれ逆
流防止用の弁８５，８６が設けられている。例えば弁８
５，８６はゴム等の可撓性板材であり、一端にて有蓋筒
体８１に固定されている。ダイアフラム８２の中央部は
磁石可動体３に一体の軸部８０Ａの軸１１Ａに連結され
ている。FIG. 16 shows a fourth embodiment of the present invention. In this case, a reciprocating diaphragm is used instead of the piston. That is, the configuration of the reciprocating actuator 10 is the same as that of the first embodiment, and the right side of the casing chamber 80 is formed on the left side of the guide cylinder 4 for slidably guiding the magnet movable body 3. And the casing chamber 80
A peripheral portion of a thin diaphragm 82 having flexibility (elasticity) is sandwiched and fixed between the end surface of the covered cylindrical body 81 constituting the left portion of the above and the end surface of the guide cylindrical body 4. Covered cylinder 8
Numeral 1 is fixed to the flange of the cylindrical yoke 1 and has an intake hole 83 and an exhaust hole 84. And
Valves 85 and 86 for preventing backflow are provided inside the intake hole 83 and outside the exhaust hole 84, respectively. For example, valve 8
Reference numerals 5 and 86 denote flexible plate members made of rubber or the like, which are fixed to the covered cylinder 81 at one end. The center of the diaphragm 82 is connected to the shaft 11A of the shaft 80A integrated with the magnet movable body 3.
【００４０】この第４実施例においても、ダイアフラム
８２を往復動させ、ダイアフラム８２で隔離されたケー
シング室８０の左側の流体導入室９０の体積を増減する
ことで、空気等の吸気穴８３からの吸入、排気穴８４か
らの排出を交互に繰り返し実行することができる。Also in the fourth embodiment, the diaphragm 82 is reciprocated to increase or decrease the volume of the fluid introduction chamber 90 on the left side of the casing chamber 80 separated by the diaphragm 82, so that the air or the like from the intake hole 83 is formed. The suction and the discharge from the exhaust hole 84 can be alternately and repeatedly executed.
【００４１】[0041]
【発明の効果】以上説明したように、本発明の可動磁石
式往復動流体機械によれば、次のような効果を得ること
ができる。 （１） 往復動アクチュエータでピストンやダイアフラ
ム等の往復駆動体を駆動する構成であり、該往復動アク
チュエータは永久磁石とコイル間に働くフレミングの左
手の法則に準ずる推力を発生するもので、効率が良好で
あり、小型で大きな推力を発生可能である。また、電力
消費を少なくでき、放熱対策も容易である。 （２） 磁性アーマチュアと固定電磁回路を組み合わせ
た従来の電磁往復動流体機械は、磁性アーマチュアが偏
倚しやすく、磁性アーマチュアの円滑な往復動が妨げら
れたり、磁性アーマチュアの摩耗が問題となるが、本発
明で用いる往復動アクチュエータはフレミングの左手の
法則に基づく推力であり、磁石可動体の偏倚は発生しに
くく、摩耗の問題も少なく、長寿命とすることができ
る。 （３） 交流電圧にて直接電磁往復動させられるため、
復帰用ばね等の機械的復帰機構が不要であり、部品点数
の削減、機構の簡略化、更には小型化が可能である。As described above, according to the movable magnet type reciprocating fluid machine of the present invention, the following effects can be obtained. (1) A reciprocating actuator drives a reciprocating drive such as a piston or a diaphragm. The reciprocating actuator generates a thrust according to Fleming's left-hand rule acting between a permanent magnet and a coil, and the efficiency is low. It is good and small and can generate large thrust. In addition, power consumption can be reduced and heat radiation measures can be easily taken. (2) In a conventional electromagnetic reciprocating fluid machine in which a magnetic armature and a fixed electromagnetic circuit are combined, the magnetic armature tends to be biased, which hinders a smooth reciprocation of the magnetic armature and causes a problem of wear of the magnetic armature. The reciprocating actuator used in the present invention has a thrust based on Fleming's left-hand rule, does not easily cause the magnet movable body to be deflected, has little wear, and can have a long life. (3) Since it can be electromagnetically reciprocated directly by AC voltage,
No mechanical return mechanism such as a return spring is required, and the number of parts can be reduced, the mechanism can be simplified, and the size can be reduced.
【図１】本発明に係る可動磁石式往復動流体機械の第１
実施例を示す正断面図である。FIG. 1 is a first view of a movable magnet type reciprocating fluid machine according to the present invention.
It is a front sectional view showing an example.
【図２】同側面図である。FIG. 2 is a side view of the same.
【図３】本発明で用いる往復動アクチュエータの基本構
成を示す概略構成図である。FIG. 3 is a schematic configuration diagram showing a basic configuration of a reciprocating actuator used in the present invention.
【図４】往復動アクチュエータの第１比較例を示す概略
構成図である。FIG. 4 is a schematic configuration diagram showing a first comparative example of a reciprocating actuator.
【図５】往復動アクチュエータの第２比較例を示す概略
構成図である。FIG. 5 is a schematic configuration diagram showing a second comparative example of the reciprocating actuator.
【図６】単一の永久磁石の長手側面（永久磁石の着磁方
向に平行な面）の表面磁束密度の垂直成分（長手側面に
垂直な成分）を示すグラフである。FIG. 6 is a graph showing a vertical component (a component perpendicular to the longitudinal side surface) of a surface magnetic flux density on a longitudinal side surface (a surface parallel to the magnetization direction of the permanent magnet) of a single permanent magnet.
【図７】２個の同極対向の永久磁石を直接的に対接状態
とした場合の長手側面の表面磁束密度の垂直成分を示す
グラフである。FIG. 7 is a graph showing a vertical component of a surface magnetic flux density on a longitudinal side surface when two permanent magnets having the same polarity are directly opposed to each other.
【図８】２個の永久磁石を１mmのエアーギャップを介し
同極対向状態とした場合の長手側面の表面磁束密度の垂
直成分を示すグラフである。FIG. 8 is a graph showing a vertical component of a surface magnetic flux density on a longitudinal side surface when two permanent magnets are placed in a same-pole opposing state via an air gap of 1 mm.
【図９】２個の永久磁石を２mmのエアーギャップを介し
同極対向状態とした場合の長手側面の表面磁束密度の垂
直成分を示すグラフである。FIG. 9 is a graph showing a vertical component of a surface magnetic flux density on a longitudinal side surface when two permanent magnets are placed in a same-pole opposing state via an air gap of 2 mm.
【図１０】２個の永久磁石を３mmのエアーギャップを介
し同極対向状態とした場合の長手側面の表面磁束密度の
垂直成分を示すグラフである。FIG. 10 is a graph showing the vertical component of the surface magnetic flux density on the longitudinal side surface when two permanent magnets are placed in the same pole opposing state via an air gap of 3 mm.
【図１１】２個の永久磁石を軟磁性体を介し同極対向状
態とした場合の長手側面の表面磁束密度の垂直成分を示
すグラフである。FIG. 11 is a graph showing the vertical component of the surface magnetic flux density on the longitudinal side surface when two permanent magnets are placed in the same pole opposing state via a soft magnetic material.
【図１２】２個の永久磁石を軟磁性体を介し同極対向状
態とし、かつ軟磁性体ヨークを配置した場合の長手側面
の表面磁束密度の垂直成分を示すグラフである。FIG. 12 is a graph showing the vertical component of the surface magnetic flux density on the longitudinal side surface when two permanent magnets are placed in the same pole opposing state via a soft magnetic material and a soft magnetic material yoke is arranged.
【図１３】図１及び図３の往復動アクチュエータにおけ
る磁石可動体の変位量と推力との関係を示すグラフであ
る。FIG. 13 is a graph showing the relationship between the amount of displacement of the movable magnet and the thrust in the reciprocating actuator of FIGS. 1 and 3;
【図１４】本発明の第２実施例を示す正断面図である。FIG. 14 is a front sectional view showing a second embodiment of the present invention.
【図１５】本発明の第３実施例を示す正断面図である。FIG. 15 is a front sectional view showing a third embodiment of the present invention.
【図１６】本発明の第４実施例を示す正断面図である。FIG. 16 is a front sectional view showing a fourth embodiment of the present invention.
１ 円筒状ヨーク ２Ａ，２Ｂ，２Ｃ コイル ３ 磁石可動体 ４ ガイド筒体 ５Ａ，５Ｂ 円柱状永久磁石 ６ 円柱状軟磁性体 ７ 円筒状ホルダ ８Ａ，８Ｂ 軸部品 １０ 往復動アクチュエータ ２０，２０Ａ，２０Ｂ シリンダ室 ３０，３０Ａ，３０Ｂ ピストン ３２，３２Ａ，３２Ｂ 吸入穴 ３３，３３Ａ，３３Ｂ 吸入弁 ３４，３４Ａ，３４Ｂ，８３ 吸気穴 ３５，３５Ａ，３５Ｂ，８４ 排気穴 ３７，３７Ａ，３７Ｂ 蓋体 ４０Ａ，４０Ｂ ポンプ部 ４１ 連結ブロック ４２ 流体通路 ４３ 連通路 ４５ 吸入口部品 ４７ 吐出口部品 ８０ ケーシング室 ８１ 有蓋筒体 ８５，８６ 弁 DESCRIPTION OF SYMBOLS 1 Cylindrical yoke 2A, 2B, 2C Coil 3 Magnet movable body 4 Guide cylindrical body 5A, 5B Cylindrical permanent magnet 6 Cylindrical soft magnetic material 7 Cylindrical holder 8A, 8B Shaft parts 10 Reciprocating actuator 20, 20A, 20B Cylinder Chamber 30, 30A, 30B Piston 32, 32A, 32B Suction hole 33, 33A, 33B Suction valve 34, 34A, 34B, 83 Suction hole 35, 35A, 35B, 84 Exhaust hole 37, 37A, 37B Lid 40A, 40B Pump Part 41 Connection block 42 Fluid passage 43 Communication passage 45 Inlet part 47 Outlet part 80 Casing chamber 81 Covered cylinder 85, 86 Valve
───────────────────────────────────────────────────── フロントページの続き (72)発明者 斉藤 重男 東京都中央区日本橋一丁目13番１号ティ ーディーケイ株式会社内 (58)調査した分野(Int.Cl.7，ＤＢ名) F04B 17/04 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shigeo Saito 1-13-1 Nihonbashi, Chuo-ku, Tokyo TDK Corporation (58) Field surveyed (Int.Cl. 7 , DB name) F04B 17/04
Claims (5)
石間に磁性体を設けて磁石可動体を構成し、相互の位置
関係が一定に規制された少なくとも３連のコイルの内側
に当該磁石可動体を移動自在に設け、前記少なくとも３
連のコイルを、各永久磁石の磁極間を境にして相異なる
方向に電流が流れる如く結線し、前記少なくとも３連の
コイルに対し一定位置関係に設けられたケーシング室に
対し往復駆動体を設けるとともに、該往復駆動体を前記
磁石可動体に連結したことを特徴とする可動磁石式往復
動流体機械。A magnet is provided between at least two permanent magnets of the same polarity facing each other to form a movable magnet, and the magnet is provided inside at least three coils whose positional relationship is regulated to be constant. A movable body is movably provided, and the at least three
A series of coils are connected so that currents flow in different directions across magnetic poles of each permanent magnet, and a reciprocating drive is provided for a casing chamber provided in a fixed positional relationship with the at least three coils. A movable magnet type reciprocating fluid machine characterized in that said reciprocating drive is connected to said magnet movable body.
し、該シリンダ室に前記往復駆動体としてのピストンが
摺動自在に設けられている請求項１記載の可動磁石式往
復動流体機械。2. The movable magnet type reciprocating fluid machine according to claim 1, wherein the casing chamber forms a cylinder chamber, and a piston as the reciprocating drive is slidably provided in the cylinder chamber.
穴を閉塞する吸入弁が設けられている請求項２記載の可
動磁石式往復動流体機械。3. The reciprocating fluid machine according to claim 2, wherein a suction hole and a suction valve for closing the suction hole are provided on an end face of the piston.
フラムであり、該ダイアフラム周縁部が前記ケーシング
室に固定されている請求項１記載の可動磁石式往復動流
体機械。4. The movable magnet type reciprocating fluid machine according to claim 1, wherein the reciprocating drive body is a flexible diaphragm, and a peripheral edge of the diaphragm is fixed to the casing chamber.
て、前記永久磁石の着磁方向に垂直な方向の磁束成分を
増加させるための磁気回路を構成した請求項１記載の可
動磁石式往復動流体機械。5. A movable magnet type reciprocating device according to claim 1, wherein a magnetic yoke is provided on an outer peripheral side of said coil to constitute a magnetic circuit for increasing a magnetic flux component in a direction perpendicular to a magnetization direction of said permanent magnet. Dynamic fluid machinery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35468692A JP3263161B2 (en) | 1992-12-17 | 1992-12-17 | Moving magnet type reciprocating fluid machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35468692A JP3263161B2 (en) | 1992-12-17 | 1992-12-17 | Moving magnet type reciprocating fluid machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06185456A JPH06185456A (en) | 1994-07-05 |
| JP3263161B2 true JP3263161B2 (en) | 2002-03-04 |
Family
ID=18439221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35468692A Expired - Fee Related JP3263161B2 (en) | 1992-12-17 | 1992-12-17 | Moving magnet type reciprocating fluid machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3263161B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6966760B1 (en) | 2000-03-17 | 2005-11-22 | Brp Us Inc. | Reciprocating fluid pump employing reversing polarity motor |
| JP4770183B2 (en) * | 2005-01-28 | 2011-09-14 | アイシン精機株式会社 | Linear compressor |
| US7753657B2 (en) | 2005-02-02 | 2010-07-13 | Brp Us Inc. | Method of controlling a pumping assembly |
| DE102016220424A1 (en) * | 2016-10-18 | 2018-04-19 | Hamilton Bonaduz Ag | Permanent magnetic piston assembly with a permanent magnet assemblies receiving outer skeleton for a pipetting device |
| CN108922757A (en) * | 2018-06-04 | 2018-11-30 | 湖北文理学院 | A kind of transformer based on magnetic fluid |
-
1992
- 1992-12-17 JP JP35468692A patent/JP3263161B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06185456A (en) | 1994-07-05 |
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