JPH0746813A - Polar rotary actuator - Google Patents
Polar rotary actuatorInfo
- Publication number
- JPH0746813A JPH0746813A JP19490193A JP19490193A JPH0746813A JP H0746813 A JPH0746813 A JP H0746813A JP 19490193 A JP19490193 A JP 19490193A JP 19490193 A JP19490193 A JP 19490193A JP H0746813 A JPH0746813 A JP H0746813A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- pole
- magnetic pole
- fixed
- 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.)
- Pending
Links
Landscapes
- Electromagnets (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高能率化、小型化及び
構造の簡略化を図ることのできる有極ロータリアクチュ
エータに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polarized rotary actuator capable of achieving high efficiency, miniaturization, and simplification of structure.
【０００２】[0002]
【従来の技術】従来の有極ロータリアクチュエータで
は、永久磁石を回転磁極に１個使うか固定磁極に２個以
上使うかしており、また、電磁石の励磁コイルを２個以
上使っていた。2. Description of the Related Art In a conventional polarized rotary actuator, one permanent magnet is used for a rotating magnetic pole or two or more fixed magnetic poles are used, and two or more exciting coils of electromagnets are used.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
技術では複数の永久磁石や励磁コイルを使うことから、
構造の複雑化や大型化が避けられず、小型化、構造の簡
略化が求められていた。また、エネルギーの有効利用の
点から能率の向上も求められていたが、上記問題は未だ
解決されていないのが現状である。However, since the conventional technique uses a plurality of permanent magnets and exciting coils,
Inevitably, the structure becomes complicated and large, and there is a demand for downsizing and simplification of the structure. Further, there has been a demand for improvement in efficiency in terms of effective use of energy, but the above-mentioned problems have not yet been solved.
【０００４】本発明は、上記事実を考慮して成されたも
のであって、構造を簡略化及び小型化し、その上、固定
磁極に永久磁石を設けることにより全体の大きさに比較
して大型の永久磁石の装着を可能にした小型で高能率な
有極ロータリアクチュエータを得ることを目的としてい
る。The present invention has been made in view of the above facts, and simplifies and downsizes the structure, and further, by providing a permanent magnet on the fixed magnetic pole, it is large compared to the entire size. The purpose of the present invention is to obtain a small-sized and highly efficient polarized rotary actuator that can be equipped with a permanent magnet.
【０００５】[0005]
【課題を解決するための手段】本発明の有極ロータリア
クチュエータは、各々相対する磁極を生成するための１
組の磁性体を備え、該１組の磁性体が対向して配設され
た２組の固定磁極と、前記２組の固定磁極間に各磁性体
の磁極との間に所定の間隙を形成するように回転可能に
配設された回転磁極と、前記２組の固定磁極間に設けら
れ前記各磁性体の磁極と前記回転磁極との間の間隙に磁
束を通過させる永久磁石と、前記回転磁極に巻回され、
各磁性体の磁極と回転磁極との間に形成された一方の間
隙では前記磁束と加算され、他方の間隙では前記磁束と
減算される磁束を生成するコイルと、を備えたことを特
徴としている。SUMMARY OF THE INVENTION The polarized rotary actuator of the present invention has a structure for generating magnetic poles facing each other.
A set of magnetic bodies is provided, and a predetermined gap is formed between two sets of fixed magnetic poles in which the one set of magnetic bodies is arranged to face each other and between the two sets of fixed magnetic poles. And a permanent magnet that is provided between the two sets of fixed magnetic poles and that allows a magnetic flux to pass through the gap between the magnetic poles of the magnetic bodies and the rotating magnetic poles. Wound around a magnetic pole,
One of the gaps formed between the magnetic pole and the rotating magnetic pole of each magnetic body is provided with a coil that generates a magnetic flux that is added to the magnetic flux in the other gap and subtracted from the magnetic flux in the other gap. .
【０００６】[0006]
【作用】本発明の有極ロータリアクチュエータによれ
ば、永久磁石を２組の固定磁極間に設けたので、永久磁
石を回転磁極に設ける場合に比べて十分大きい永久磁石
を用いることができる。このため、磁極間に十分な磁束
密度を与えて能率を向上させることができる。According to the polarized rotary actuator of the present invention, since the permanent magnet is provided between the two sets of fixed magnetic poles, it is possible to use a permanent magnet that is sufficiently larger than when the permanent magnet is provided on the rotating magnetic pole. Therefore, a sufficient magnetic flux density can be given between the magnetic poles to improve the efficiency.
【０００７】この永久磁石は２組の固定磁極をそれぞれ
Ｓ極とＮ極とに磁化させる。永久磁石の磁束は、固定磁
極のＮ極から回転磁極の一端の相対する部分に入り、回
転磁極の他端から相対する固定磁極のＳ極に入る。This permanent magnet magnetizes two sets of fixed magnetic poles into an S pole and an N pole, respectively. The magnetic flux of the permanent magnet enters from the N pole of the fixed magnetic pole into the opposing portion of one end of the rotating magnetic pole and from the other end of the rotating magnetic pole into the S pole of the opposing fixed magnetic pole.
【０００８】一方、励磁コイルによって回転磁極に生成
された磁束は、固定磁極のＳ極及び固定磁極のＮ極と回
転磁極との間に設けられた、一方の間隙では永久磁石の
磁束と加算されるように流れ、他方の間隙では減算され
るように流れる。この結果、それぞれの間隙で磁束に差
が生じ、吸引力の差が起こって回転磁極が回転する。On the other hand, the magnetic flux generated in the rotating magnetic pole by the exciting coil is added to the magnetic flux of the permanent magnet in one gap provided between the rotating magnetic pole and the S pole of the fixed magnetic pole and the N pole of the fixed magnetic pole. Flow in the other gap and flow in the other gap so as to be subtracted. As a result, a difference occurs in the magnetic flux between the gaps, a difference in the attractive force occurs, and the rotating magnetic pole rotates.
【０００９】このときの回転力は、永久磁石の磁束密度
と励磁コイルのアンペアターンとの積に比例する。永久
磁石の磁束密度を従来の有極ロータリアクチュエータに
比べて十分に上げておくことができる本発明の有極ロー
タリアクチュエータは、従来の有極ロータリアクチュエ
ータよりも能率を向上させることができる。The rotational force at this time is proportional to the product of the magnetic flux density of the permanent magnet and the ampere-turn of the exciting coil. The polarized rotary actuator of the present invention capable of sufficiently increasing the magnetic flux density of the permanent magnet as compared with the conventional polarized rotary actuator can improve the efficiency as compared with the conventional polarized rotary actuator.
【００１０】さらに、本発明の有極ロータリアクチュエ
ータでは、励磁コイルによる磁束が磁性体で構成された
回転磁極と固定磁極を通り磁気抵抗の大きい永久磁石を
通らないため、これによっても能率を向上させることが
できる。Further, in the polarized rotary actuator of the present invention, the magnetic flux generated by the exciting coil does not pass through the rotating magnetic pole and the fixed magnetic pole made of a magnetic material and does not pass through the permanent magnet having a large magnetic resistance. be able to.
【００１１】さらに、２組の固定磁極間に設けられる永
久磁石の個数は必要最小限の１個で済み、励磁コイルは
回転磁極の一方をＳ極、他方をＮ極に磁化させるだけで
良いため励磁コイルの個数としても必要最小限の１個で
済む。したがって、従来の有極ロータリアクチュエータ
に比べて永久磁石及び励磁コイルの個数を減らし、構造
の簡略化及び部品点数の低減化を図ることができる。Further, the number of permanent magnets provided between the two sets of fixed magnetic poles is the minimum required one, and the exciting coil only needs to magnetize one of the rotating magnetic poles to the S pole and the other to the N pole. As for the number of exciting coils, the required minimum of one is sufficient. Therefore, the number of permanent magnets and exciting coils can be reduced as compared with the conventional polarized rotary actuator, and the structure can be simplified and the number of parts can be reduced.
【００１２】[0012]
【実施例】本発明の一実施例を図１乃至図３にしたがっ
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.
【００１３】本実施例の有極ロータリアクチュエータ１
０は、幅方向（矢印Ａ方向）に着磁された角柱状の永久
磁石１２を備えている。この永久磁石１２としては、エ
ネルギー積の大きい希土類磁石等が好ましい。Polarized rotary actuator 1 of this embodiment
No. 0 is provided with a prismatic permanent magnet 12 magnetized in the width direction (direction of arrow A). As the permanent magnet 12, a rare earth magnet or the like having a large energy product is preferable.
【００１４】図２に示すように、永久磁石１２の幅方向
側両面には、一方に固定磁極１４が、他方に固定磁極１
６が密着して取り付けられている。なお、固定磁極１
４、１６は軟磁性体で一体的に形成されているものが望
ましいが分割されていてもよい。As shown in FIG. 2, on both sides in the width direction of the permanent magnet 12, a fixed magnetic pole 14 is provided on one side and a fixed magnetic pole 1 is provided on the other side.
6 is attached closely. The fixed magnetic pole 1
It is desirable that 4 and 16 are integrally formed of a soft magnetic material, but they may be divided.
【００１５】固定磁極１４、１６はコ字状を呈してお
り、永久磁石１２の長手方向側面に沿って配設される基
部１８の上面両端部にそれぞれ磁極を生成するための磁
性体２２、２４が立設され、同じく永久磁石１２の長手
方向側面に沿って配設される基部２０の上面両端部にそ
れぞれ磁極を生成するための磁性体２６、２８が立設さ
れている。本実施例では、図１に示すように、磁性体２
２、２４がＮ極、磁性体２６、２８がＳ極となってい
る。The fixed magnetic poles 14 and 16 have a U-shape, and magnetic bodies 22 and 24 for generating magnetic poles at both ends of the upper surface of the base portion 18 arranged along the longitudinal side surface of the permanent magnet 12, respectively. Is also erected, and magnetic members 26 and 28 for generating magnetic poles are erected on both ends of the upper surface of the base 20 which is also arranged along the longitudinal side surface of the permanent magnet 12. In this embodiment, as shown in FIG.
2, 24 are N poles, and the magnetic bodies 26, 28 are S poles.
【００１６】図１、２に示すように、磁性体２２、２
４、２６、２８の間には、ロータ３０が配設されてい
る。ロータ３０は、軸芯部分に出力軸３２を備えてお
り、出力軸３２は、磁性体２２、２４、２６、２８に沿
って立設されている。As shown in FIGS.
A rotor 30 is arranged between 4, 26 and 28. The rotor 30 is provided with an output shaft 32 at its shaft center portion, and the output shaft 32 is provided upright along the magnetic bodies 22, 24, 26, 28.
【００１７】出力軸３２の両端は小径とされ、上側がベ
アリング３４へ下側がベアリング３６へそれぞれ支持さ
れている。ベアリング３６は、基部１８、２０の上面に
ネジ止めされた下部ベアリング支持板３８に穿孔された
孔４０へ圧入固定されており、ベアリング３４は、磁性
体２２、２４、２６、２８の上端にネジ止めされた上部
ベアリング支持板４２に穿孔された孔４４へ圧入固定さ
れている。Both ends of the output shaft 32 have a small diameter, and the upper side is supported by the bearing 34 and the lower side is supported by the bearing 36. The bearing 36 is press-fitted and fixed in a hole 40 formed in a lower bearing support plate 38 screwed to the upper surfaces of the bases 18 and 20, and the bearing 34 is screwed to the upper ends of the magnetic bodies 22, 24, 26 and 28. It is press-fitted and fixed in a hole 44 formed in the stopped upper bearing support plate 42.
【００１８】出力軸３２の長手方向中間部には、出力軸
３２の長手方向と直交する方向に延びる回転磁極４６が
固着されている。図１に示すように、回転磁極４６の長
手方向両端部には、出力軸３２と直交する断面形状にお
いて出力軸３２を曲率中心とする円弧部４６Ａが形成さ
れている。また、回転磁極４６の長手方向中間部は角柱
状とされ、励磁コイル４８が巻回されている。A rotating magnetic pole 46, which extends in a direction orthogonal to the longitudinal direction of the output shaft 32, is fixed to an intermediate portion of the output shaft 32 in the longitudinal direction. As shown in FIG. 1, arcuate portions 46 </ b> A having the output shaft 32 as the center of curvature are formed at the both ends in the longitudinal direction of the rotating magnetic pole 46 in the sectional shape orthogonal to the output shaft 32. Further, the longitudinal magnetic intermediate portion of the rotating magnetic pole 46 is formed into a prismatic shape, and the exciting coil 48 is wound around it.
【００１９】一方、ロータ３０に対向する磁性体２２、
２４、２６、２８の角部分には、断面形状において出力
軸３２を曲率中心とする円弧部２２Ａ、２４Ａ、２６
Ａ、２８Ａが形成されている。なお、回転磁極４６と円
弧部２２Ａ、２４Ａ、２６Ａ、２８Ａとの間にはそれぞ
れ間隙５０、５２、５４、５６が設けられている。On the other hand, the magnetic body 22 facing the rotor 30,
In the corner portions of 24, 26 and 28, arcuate portions 22A, 24A and 26 having the output shaft 32 as the center of curvature in the sectional shape.
A and 28A are formed. It should be noted that gaps 50, 52, 54 and 56 are provided between the rotating magnetic pole 46 and the arc portions 22A, 24A, 26A and 28A, respectively.
【００２０】また、図１に示すように、円弧部４６の周
方向に沿った長さは、円弧部４６が磁性体２４、２６の
円弧部２４Ａ、２６Ａの周方向長さの全長に渡って対向
すると共に磁性体２２、２８の円弧部２２Ａ、２８Ａの
一部に対向する長さとされている。Further, as shown in FIG. 1, the length of the arc portion 46 along the circumferential direction is such that the arc portion 46 extends over the entire length of the circumferential length of the arc portions 24A, 26A of the magnetic bodies 24, 26. The length is set so as to face each other and also to partially face the circular arc portions 22A and 28A of the magnetic bodies 22 and 28.
【００２１】次に、本実施例の有極ロータリアクチュエ
ータ１０の作動に付いて内部を通る磁束を参照し説明す
る。Next, the operation of the polarized rotary actuator 10 of this embodiment will be described with reference to the magnetic flux passing through the inside.
【００２２】図１に示すように、本実施例では、固定磁
極１４の磁性体２２、２４がＮ極、固定磁極１６の磁性
体２６、２８がＳ極であるので、実線矢印６０で示すよ
うに、永久磁石１２による磁束は、一方が固定磁極１４
の磁性体２４から間隙５２、回転磁極４６の端部及び間
隙５６を介して固定磁極１６の磁性体２８へ流れ、他方
が固定磁極１４の磁性体２２から間隙５０、回転磁極４
６の端部及び間隙５４を介して固定磁極１６の磁性体２
６へ流れる。As shown in FIG. 1, in this embodiment, the magnetic bodies 22 and 24 of the fixed magnetic pole 14 are N poles, and the magnetic bodies 26 and 28 of the fixed magnetic pole 16 are S poles. In addition, one of the magnetic fluxes from the permanent magnets 12 is the fixed magnetic pole 14
From the magnetic body 24 to the magnetic body 28 of the fixed magnetic pole 16 through the gap 52, the end of the rotary magnetic pole 46 and the gap 56, and the other flows from the magnetic body 22 of the fixed magnetic pole 14 to the gap 50 and the rotary magnetic pole 4.
The magnetic body 2 of the fixed magnetic pole 16 through the end portion of 6 and the gap 54.
Flow to 6.
【００２３】一方、励磁コイル４８に電流を流して生成
される磁束は、点線矢印６２のように回転磁極４６を長
手方向に沿って流れ、磁性体２４と磁性体２８との２方
向へ分かれる。磁性体２４へ分かれた磁束は、回転磁極
４６の一端から間隙５２を介して固定磁極１４の磁性体
２４を下方（図１紙面裏側方向）へ向かって流れ、基部
１８を介して固定磁極１４の磁性体２２を上方（図１紙
面表側方向）へ向かって流れ、間隙５０を介して回転磁
極４６の他端へ流れる。また、磁性体２８へ分かれた磁
束は、回転磁極４６の一端から間隙５６を介して固定磁
極１６の磁性体２８を下方（図１紙面裏側方向）へ向か
って流れ、基部２０を介して固定磁極１６の磁性体２６
を上方（図１紙面表側方向）へ向かって流れ、間隙５４
を介して回転磁極４６の他端へ流れる。On the other hand, the magnetic flux generated by passing a current through the exciting coil 48 flows along the longitudinal direction through the rotating magnetic pole 46 as indicated by the dotted arrow 62, and is divided into two directions, the magnetic body 24 and the magnetic body 28. The magnetic flux separated into the magnetic body 24 flows downward (toward the back side of the drawing in FIG. 1) of the fixed magnetic pole 14 from one end of the rotating magnetic pole 46 through the gap 52, and then passes through the base 18 of the fixed magnetic pole 14. The magnetic material 22 flows upward (toward the front side of the paper in FIG. 1) and flows to the other end of the rotating magnetic pole 46 through the gap 50. Further, the magnetic flux split into the magnetic body 28 flows downward (toward the back side of the drawing in FIG. 1) of the fixed magnetic pole 16 from one end of the rotating magnetic pole 46 through the gap 56, and then through the base portion 20 to the fixed magnetic pole. 16 magnetic bodies 26
Flow upward (toward the front side of the paper in FIG. 1), and the gap 54
Through to the other end of the rotating magnetic pole 46.
【００２４】ここで、間隙５０及び間隙５６において
は、励磁コイル４８による磁束が永久磁石１２による磁
束と加算されるように流れ、間隙５２及び間隙５４にお
いては、励磁コイル４８による磁束が永久磁石１２によ
る磁束と減算されるように流れ、それぞれの間隙のあい
だで磁束密度の差が生じ、吸引力の差が起こって図１に
示す状態のロータ３０は図１の時計周り方向（矢印Ｂ方
向）へ回転する。In the gap 50 and the gap 56, the magnetic flux from the exciting coil 48 flows so as to be added to the magnetic flux from the permanent magnet 12, and in the gap 52 and the gap 54, the magnetic flux from the exciting coil 48 flows. 1 and the magnetic flux due to the flow of the magnetic flux due to subtraction, a difference in magnetic flux density occurs between the respective gaps, and a difference in attractive force occurs, so that the rotor 30 in the state shown in FIG. 1 rotates in the clockwise direction (arrow B direction) in FIG. Rotate to.
【００２５】なお、励磁コイル４８の電流の方向を上述
の場合と逆に流せば、間隙の磁束密度が逆転してロータ
３０は時計周り方向とは逆方向（矢印Ｂ方向とは反対方
向）へ回転する。If the direction of the current of the exciting coil 48 is made to flow in the opposite direction to the above case, the magnetic flux density in the gap is reversed and the rotor 30 moves in the direction opposite to the clockwise direction (the direction opposite to the arrow B direction). Rotate.
【００２６】本実施例の有極ロータリアクチュエータ１
０では、励磁コイルによる磁束が軟磁性体で構成された
回転磁極４６と固定磁極１４、１６を通り、磁気抵抗の
大きい永久磁石１２を通ることが無い。このため、本実
施例の有極ロータリアクチュエータ１０は、少ない電力
で多くの磁束を得ることができ、高能率である。Polarized rotary actuator 1 of this embodiment
At 0, the magnetic flux from the exciting coil does not pass through the rotating magnetic pole 46 and the fixed magnetic poles 14 and 16 formed of a soft magnetic material, and does not pass through the permanent magnet 12 having a large magnetic resistance. For this reason, the polarized rotary actuator 10 of the present embodiment can obtain a large amount of magnetic flux with a small amount of electric power and is highly efficient.
【００２７】また、本実施例の有極ロータリアクチュエ
ータ１０では、従来の有極ロータリアクチュエータと異
なって複数個の永久磁石及び励磁コイルを必要とせず、
永久磁石及び励磁コイルがそれぞれ１つづつで済む構成
であるため、従来の有極ロータリアクチュエータに比べ
て構造の簡略化、部品点数の低減化が図られている。Further, the polarized rotary actuator 10 of this embodiment does not require a plurality of permanent magnets and exciting coils unlike the conventional polarized rotary actuator,
Since only one permanent magnet and one exciting coil are required, the structure is simplified and the number of parts is reduced as compared with the conventional polarized rotary actuator.
【００２８】さらに、本実施例の有極ロータリアクチュ
エータ１０では、永久磁石１２を固定磁極１４、１６側
へ設けたことにより、有極ロータリアクチュエータ１０
全体の大きさに比較して永久磁石１２の大型化が容易で
ある。このため、ロータに永久磁石を設けたタイプの有
極ロータリアクチュエータに比べて、永久磁石の磁束密
度を十分に上げておくことができ、これによっても能率
の向上が図られる。Further, in the polar rotary actuator 10 of this embodiment, the permanent magnet 12 is provided on the fixed magnetic poles 14 and 16 side, so that the polar rotary actuator 10 is provided.
It is easy to increase the size of the permanent magnet 12 as compared with the overall size. Therefore, the magnetic flux density of the permanent magnet can be sufficiently increased as compared with a polarized rotary actuator of the type in which the permanent magnet is provided on the rotor, which also improves efficiency.
【００２９】このように、本実施例の有極ロータリアク
チュエータ１０は、構造の簡略化、部品点数の低減化、
能率の向上が図られているため、回転力を落とすことな
く従来の有極ロータリアクチュエータよりも大幅な小型
化が可能であり、寸法を同一をすれば、従来よりも大幅
な回転力を得ることができる。このため、有極ロータリ
アクチュエータ１０を使用する機器の小型化、小電力
化、高効率化に貢献することができる。As described above, the polarized rotary actuator 10 of this embodiment has a simplified structure, a reduced number of parts,
Since the efficiency is improved, it is possible to make the size significantly smaller than the conventional polarized rotary actuator without lowering the rotating force, and if the dimensions are the same, a larger rotating force can be obtained than the conventional one. You can For this reason, it is possible to contribute to downsizing, power reduction, and efficiency improvement of a device using the polarized rotary actuator 10.
【００３０】[0030]
【発明の効果】以上説明したように、本発明の有極ロー
タリアクチュエータは、上記の構成として２組の固定磁
極間に設けられる永久磁石及び回転磁極に巻回される励
磁コイルの数がそれぞれ必要最小限の１個づつで済むた
め、従来の有極ロータリアクチュエータに比べて、構造
の簡略化及び小型化が可能となり、その上、固定磁極に
永久磁石を設けることにより全体の大きさに比較して大
型の永久磁石の装着を可能としたので、小型で高能率を
得られるという優れた効果を有する。As described above, in the polarized rotary actuator of the present invention, the permanent magnets provided between the two fixed magnetic poles and the number of exciting coils wound around the rotary magnetic poles are required in the above configuration. Since only a minimum of one unit is required, the structure can be simplified and miniaturized compared to the conventional polarized rotary actuator. In addition, by installing a permanent magnet on the fixed magnetic pole, Since a large-sized permanent magnet can be mounted, a small size and high efficiency can be obtained.
【図１】本発明の一実施例に係る有極ロータリアクチュ
エータを示し、出力軸に直角な断面図である。FIG. 1 is a cross-sectional view showing a polarized rotary actuator according to an embodiment of the present invention, which is perpendicular to an output shaft.
【図２】有極ロータリアクチュエータの分解斜視図であ
る。FIG. 2 is an exploded perspective view of a polarized rotary actuator.
【図３】図１に示す有極ロータリアクチュエータの３−
３線断面図である。FIG. 3 is a schematic diagram of a polarized rotary actuator shown in FIG.
FIG.
１０ 有極ロータリアクチュエータ １２ 永久磁石 １４ 固定磁極 １６ 固定磁極 ２２ 磁性体 ２４ 磁性体 ２６ 磁性体 ２８ 磁性体 ４６ 回転磁極 ４８ 励磁コイル ５０ 間隙 ５２ 間隙 ５４ 間隙 ５６ 間隙 10 polarized rotary actuator 12 permanent magnet 14 fixed magnetic pole 16 fixed magnetic pole 22 magnetic body 24 magnetic body 26 magnetic body 28 magnetic body 46 rotating magnetic pole 48 exciting coil 50 gap 52 gap 54 gap 56 gap
Claims (1)
の磁性体を備え、該１組の磁性体が対向して配設された
２組の固定磁極と、 前記２組の固定磁極間に各磁性体の磁極との間に所定の
間隙を形成するように回転可能に配設された回転磁極
と、 前記２組の固定磁極間に設けられ前記各磁性体の磁極と
前記回転磁極との間の間隙に磁束を通過させる永久磁石
と、 前記回転磁極に巻回され、各磁性体の磁極と回転磁極と
の間に形成された一方の間隙では前記磁束と加算され、
他方の間隙では前記磁束と減算される磁束を生成するコ
イルと、 を備えたことを特徴とする有極ロータリアクチュエー
タ。1. A pair of fixed magnetic poles, each of which has a pair of magnetic bodies for generating magnetic poles facing each other, and the pair of fixed magnetic bodies are disposed so as to face each other, and between the pair of fixed magnetic poles. A rotary magnetic pole rotatably arranged so as to form a predetermined gap between the magnetic poles of each magnetic body, and a magnetic pole of each magnetic body and the rotary magnetic pole provided between the two sets of fixed magnetic poles. A permanent magnet that allows a magnetic flux to pass through a gap between the magnetic poles, and the magnetic flux is added to the magnetic flux in one of the gaps formed between the magnetic poles of the magnetic bodies and the rotary magnetic poles, which is wound around the rotary magnetic pole.
A polarized rotary actuator, comprising: a coil that generates a magnetic flux that is subtracted from the magnetic flux in the other gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19490193A JPH0746813A (en) | 1993-08-05 | 1993-08-05 | Polar rotary actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19490193A JPH0746813A (en) | 1993-08-05 | 1993-08-05 | Polar rotary actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0746813A true JPH0746813A (en) | 1995-02-14 |
Family
ID=16332221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19490193A Pending JPH0746813A (en) | 1993-08-05 | 1993-08-05 | Polar rotary actuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0746813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7436094B2 (en) | 2003-04-03 | 2008-10-14 | Minebea Co., Ltd. | Rotary actuator |
-
1993
- 1993-08-05 JP JP19490193A patent/JPH0746813A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7436094B2 (en) | 2003-04-03 | 2008-10-14 | Minebea Co., Ltd. | Rotary actuator |
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