JPH0231903Y2 - - Google Patents

Description

【考案の詳細な説明】 （産業上の利用分野） 本考案は、自動車用ドアの旋解錠ノブ操作等を
電動駆動するための電動式ロータリーアクチユエ
ータに関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an electric rotary actuator for electrically driving the operation of the locking/unlocking knob of an automobile door.

（従来の技術） 従来の電動式アクチユエータには、コイルに発
生した磁束を、鉄心に集束させて電磁石を形成
し、その電磁石の吸引力によつて可動鉄心部を作
動する、有鉄心ソレノイド型が多く用いられてい
る。(Prior art) Conventional electric actuators include iron-core solenoid type actuators that focus the magnetic flux generated in a coil onto an iron core to form an electromagnet, and operate a movable iron core by the attractive force of the electromagnet. It is often used.

この有鉄心ソレノイド型のアクチユエータは、
作動方向を両方向とすること、すなわち、引き方
向に操作力を加えかつ、押し方向にも操作力を加
えることが困難であり、しかも、有鉄心であるた
め、自動車のドアーの中に装備しうるような小形
偏平構造とすることも困難であり、かつ、重量も
重たくなる欠点がある。 This iron core solenoid type actuator is
It is difficult to operate in both directions, that is, to apply operating force in the pulling direction and also in the pushing direction, and because it has a iron core, it can be installed inside a car door. It is difficult to form such a small flat structure, and it also has the disadvantage of being heavy.

そこで、本出願人は、上記欠点を解消するべ
く、無鉄心型のロータリーアクチユエータを、特
願昭60−26190号において提案している。 Therefore, in order to eliminate the above-mentioned drawbacks, the present applicant has proposed a coreless rotary actuator in Japanese Patent Application No. 60-26190.

この無鉄心型のロータリーアクチユエータは、
回転可動体に固設され、回転軸の軸線方向に磁化
方向をもち、その磁化方向に偏平な扇形永久磁石
と、回転可動体の回転軸を枢支する固定ベース部
材と、該固定ベース部材において回転軸と直交す
る平面に、前記偏平な扇形永久磁石と対面して固
設され、かつ、径方向に延びる複数の導線パター
ンを描いたシート状平面コイルとを具備し、前記
偏平扇形永久磁石と、前記シート状平面コイルの
径方向に延びた導線に流れる電流との電磁作用に
よつて、回転可動体を正逆両方向に回転させるよ
うにしたもので、本考案は、これの改良に関する
ものである。 This iron-free rotary actuator is
A sector-shaped permanent magnet that is fixedly attached to the rotary movable body, has a magnetization direction in the axial direction of the rotary shaft, and is flat in the magnetization direction; a fixed base member that pivotally supports the rotary shaft of the rotary movable body; a sheet-like planar coil fixedly disposed facing the flat sector-shaped permanent magnet on a plane perpendicular to the rotational axis and having a plurality of conducting wire patterns extending in the radial direction; The rotary movable body is rotated in both forward and reverse directions by electromagnetic interaction with the current flowing in the conductor wire extending in the radial direction of the sheet-like planar coil, and the present invention relates to an improvement of this. be.

（本考案が解決しようとする問題点） 上述の無鉄心型のロータリーアクチユエータ
は、平面コイルの中心に回転可動体の回転軸が貫
通するため、この軸芯部にはコイルの導電パター
ンを描くことができず、そのため中央部を通る導
電パターンは、軸芯部を迂回している。(Problems to be Solved by the Present Invention) In the above-mentioned ironless rotary actuator, the rotating shaft of the rotating movable body passes through the center of the planar coil, so the conductive pattern of the coil is placed at the center of the shaft. Therefore, the conductive pattern passing through the center bypasses the axis.

また、無鉄心型のロータリーアクチユエータに
おける平面コイルの導線は、コイルを極薄くする
ために複数の導線が同一平面に並べられて平面に
拡がりをもち、そのため、扇形永久磁石と作用し
て有効なトルクを発生させるための径方向に延び
る導線は、軸芯部を迂回する導線によつて長さが
短くなり、特に回転可動体の実効径が小さいと、
その実効径に占める径方向に延びる線の割合が極
端に少なくなる。 In addition, in order to make the coil extremely thin, the conductor wire of the planar coil in a coreless rotary actuator has multiple conductors lined up on the same plane and spreads out on the same plane, which makes it effective by interacting with the sector-shaped permanent magnet. The length of the conductor wire that extends in the radial direction for generating a large amount of torque is shortened by the conductor that detours around the axis, especially when the effective diameter of the rotating movable body is small.
The ratio of the wire extending in the radial direction to the effective diameter becomes extremely small.

本考案は、上述の欠点を除去して、トルク発生
に有効に作用する導線部を多くして小型化を計り
うる無鉄心型のロータリーアクチユエータを提供
するものである。 The present invention eliminates the above-mentioned drawbacks and provides a coreless rotary actuator that can be miniaturized by increasing the number of conducting wire parts that effectively act on torque generation.

（問題点を解決するための手段） 本考案は、回転軸４の軸線に直交する平面をも
ち、回転軸４と共に回動するヨーク部材７と、こ
のヨーク部材７の平面部の一側に固着され、かつ
回転軸４の軸線方向に磁化方向をもち、その磁化
方向に偏平な扇形永久磁石２ａ，２ｂをもつて構
成された回転可動体１と、中空内部にロータリー
アクチユエータの機構を収めるベース本体３ａ
と、中空内部の開口部を塞ぐ蓋３ｂをもつて構成
され、偏平なケーシングを兼ねて回転可動体１の
回転軸４を枢支するようにした固定ベース部材３
と、固定ベース部材３のベース本体３ａにおける
回転軸４と直交する底面ｃの内面に、前記永久磁
石２と対面し、固定部のヨーク部材６に重ねられ
て固設され、かつ径方向に延びる複数の導線５
ａ，５ｂを弦部に含んで、概略半円形の巻線形状
をもつて支持部材５ｃに平面状に巻回した平面コ
イル５とを具備し、前記扇形永久磁石２ａ，２ｂ
の磁界と、前記平面コイル５における径方向に延
びた導線５ａ，５ｂに流れる電流との電磁作用に
よつて、その電流方向に応じて、回転可動体１を
正逆両方向に回転させうるようにしたロータリー
アクチユエータにおいて、 扇形永久磁石２ａ，２ｂと電磁作用を行なう半
円形の平面コイル５における径方向へ延びる導線
５ａ，５ｂを、回転可動体１の回転中心近傍を通
過する導線５ｃで連結して、弦部を直線状とした
半円形の平面コイル５と、その平面コイル５にお
ける回転可動体１の回転中心近傍の導線５ｃを跨
ぐ架橋部１０ｂを有し、その架橋部１０ｂ両端の
脚１０ａ，１０ａの下端を、平面コイル５の支持
部材５ｃと固定部のヨーク部材６に設けた孔５
ｅ，６ａに嵌着し、さらにの架橋部１０ｂに、前
記回転可動体１における回転軸４の一端を支持し
た軸受部材１０とを備えてなることにより問題点
は解決される。(Means for solving the problem) The present invention includes a yoke member 7 having a plane orthogonal to the axis of the rotating shaft 4 and rotating together with the rotating shaft 4, and a yoke member 7 fixed to one side of the flat part of the yoke member 7. The rotary movable body 1 has a magnetization direction in the axial direction of a rotating shaft 4, and is configured with flat sector-shaped permanent magnets 2a and 2b in the magnetization direction, and a rotary actuator mechanism is housed in the hollow interior. Base body 3a
and a fixed base member 3, which is configured with a lid 3b that closes the opening in the hollow interior, and which also serves as a flat casing and pivotally supports the rotation shaft 4 of the rotary movable body 1.
A magnet is fixed on the inner surface of the bottom surface c of the base body 3a of the fixed base member 3, which is orthogonal to the rotating shaft 4, facing the permanent magnet 2, overlapped with the yoke member 6 of the fixed part, and extending in the radial direction. Multiple conductors 5
a, 5b in the string portion, and a planar coil 5 having a substantially semicircular winding shape and wound in a planar manner around a support member 5c, the fan-shaped permanent magnets 2a, 2b.
The rotary movable body 1 can be rotated in both forward and reverse directions depending on the direction of the current by the electromagnetic action of the magnetic field and the current flowing through the conductive wires 5a and 5b extending in the radial direction in the planar coil 5. In this rotary actuator, conducting wires 5a and 5b extending in the radial direction of a semicircular planar coil 5 that performs electromagnetic action with the sector-shaped permanent magnets 2a and 2b are connected by a conducting wire 5c passing near the center of rotation of the rotary movable body 1. It has a semicircular planar coil 5 with a straight string portion, a bridge portion 10b that straddles the conductor 5c near the rotation center of the rotary movable body 1 in the planar coil 5, and legs at both ends of the bridge portion 10b. The lower ends of 10a and 10a are connected to holes 5 provided in the support member 5c of the planar coil 5 and the yoke member 6 of the fixed part.
The problem can be solved by providing a bearing member 10 which is fitted onto the bearing member 10 and which supports one end of the rotary shaft 4 in the rotatable movable body 1, and which is further provided on the bridge portion 10b.

（作 用） 平面コイル状に巻回された導線の一部を、回転
可動体の回転中心近傍を通過させて、径方向に延
びる導線部を長くすることにより、その導線部と
扇形永久磁石との作用面積を増加して出力トルク
を増大する。(Function) By passing a part of the conductive wire wound into a planar coil shape near the center of rotation of the rotating movable body and lengthening the conductive wire portion extending in the radial direction, the conductive wire portion and the sector-shaped permanent magnet are connected. The output torque is increased by increasing the area of action.

（実施例） 図は、本考案の一実施例を示すもので、まずロ
ータリーアクチユエータの基本構造を第８図に基
づき説明する。(Embodiment) The figure shows an embodiment of the present invention. First, the basic structure of a rotary actuator will be explained based on FIG. 8.

１は回転可動体、２ａ，２ｂは扇形永久磁石、
３は固定ベース部材、４は回転可動体１の回転
軸、５は平面コイル、６は固定部のヨーク部材で
ある。 1 is a rotating movable body, 2a and 2b are sector-shaped permanent magnets,
3 is a fixed base member, 4 is a rotating shaft of the rotary movable body 1, 5 is a planar coil, and 6 is a yoke member of the fixed part.

回転可動体１は、それの回転軸４の軸線と直交
する平面をもち、回転軸４に固定された回転部の
ヨーク部材７を備え、その回転部のヨーク部材７
の平面部における平面コイル５側には、偏平な扇
形永久磁石２ａ，２ｂが180度の対角線に一対固
設されている。 The rotatable movable body 1 has a plane orthogonal to the axis of its rotary shaft 4 and includes a yoke member 7 of the rotary portion fixed to the rotary shaft 4.
A pair of flat fan-shaped permanent magnets 2a and 2b are fixedly installed diagonally at 180 degrees on the plane coil 5 side of the plane part.

固定ベース部材３は、中空内部にロータリーア
クチユエータの機構を収める偏平なケーシングを
兼ねたベース本体３ａと、その中空内部の開口部
を塞ぐ蓋３ｂとをもつて構成されている。 The fixed base member 3 includes a base body 3a that also serves as a flat casing that houses a rotary actuator mechanism in a hollow interior, and a lid 3b that closes an opening in the hollow interior.

回転可動体１の回転軸４は、ベース本体３ａの
底面３ｃのほぼ中央に設けた軸受孔３ｄと、該軸
受孔３ｄに対応して蓋３ｂに設けたボス孔３ｅと
によつて、底面３ｃと軸線を直交して回転自在に
枢支され、そのボス孔３ｅから突出する出力軸４
ａには、出力レバー８が固設されている。 The rotating shaft 4 of the rotatable movable body 1 is connected to the bottom surface 3c by a bearing hole 3d provided approximately in the center of the bottom surface 3c of the base body 3a and a boss hole 3e provided in the lid 3b corresponding to the bearing hole 3d. An output shaft 4 is rotatably supported perpendicular to the axis of the output shaft 4 and protrudes from the boss hole 3e.
An output lever 8 is fixed to a.

ベース本体３ａの底面３ｃの内側には、円板状
の固定部のヨーク部材６が回転不能に固設され、
そのヨーク部材６の上面には、スプリング配線と
同様な技術をもつて作られたシート状の平面コイ
ル５が、回転不能に固設され、かつ、この平面コ
イル５とヨーク部材６の軸芯部には、回転軸４が
貫通している。 A yoke member 6, which is a disk-shaped fixed portion, is fixedly fixed inside the bottom surface 3c of the base body 3a, and is non-rotatable.
On the upper surface of the yoke member 6, a sheet-shaped planar coil 5 made using the same technology as spring wiring is fixedly fixed in a non-rotatable manner, and the axis of the planar coil 5 and the yoke member 6 is fixed. A rotating shaft 4 passes through it.

扇形永久磁石２ａ，２ｂは、回転軸４の軸線方
向に磁化されており、その一方の第８図右側の扇
形永久磁石２ａの極性は、回転部のヨーク部材７
側がＳ極、平面コイル５側がＮ極に、他方の扇形
永久磁石２ｂの極性は、それと逆になつている。
ただし、この極性方向は、後述する平面コイル５
へ流れる電流の方向によつて、扇形永久磁石２
ａ，２ｂの駆動方向をどちらでも選択できるた
め、取付けに際して特定されるものでない。 The sector-shaped permanent magnets 2a and 2b are magnetized in the axial direction of the rotating shaft 4, and the polarity of the sector-shaped permanent magnet 2a on the right side of FIG.
The polarity of the other fan-shaped permanent magnet 2b is opposite to that of the S pole on the S pole and the N pole on the side of the planar coil 5.
However, this polarity direction is different from that of the planar coil 5 described later.
Depending on the direction of the current flowing to the sector-shaped permanent magnet 2
Since either the driving direction of a or 2b can be selected, it is not specified at the time of installation.

平面コイル５の導線のパターンは、第９図に示
す如く、扇形永久磁石２ａ，２ｂそれぞれ対面す
るところに、径方向に延びる複数の導線パターン
５ａ，５ｂを、概略半円形をなす巻線形の弦部に
含んで描かれており、この複数の導線パターン５
ａ，５ｂの各導線に同時に同一方向へ電流が流れ
ると、その電流と扇形永久磁石２ａ，２ｂとの相
互作用によつて、自由回転する扇形永久磁石２
ａ，２ｂ、すなわち回転可動体１が回転する。 As shown in FIG. 9, the pattern of the conductive wire of the planar coil 5 is such that a plurality of conductive wire patterns 5a, 5b extending in the radial direction are arranged in a substantially semicircular winding string at positions facing each of the sector-shaped permanent magnets 2a, 2b. This multiple conductor pattern 5
When a current flows simultaneously in the same direction through each of the conductors a and 5b, the interaction between the current and the sector-shaped permanent magnets 2a and 2b causes the sector-shaped permanent magnet 2 to rotate freely.
a, 2b, that is, the rotary movable body 1 rotates.

このとき、第９図右側の仮想線で示す扇形永久
磁石２ａについては、導線パターン５ａの各導線
に径方向外向きに電流を流すと、回転可動体１
は、同図において、時計廻りに回転し、また、同
様各導線に径方向内向きに電流を流すと、回転可
動体１は、同図で反時計廻りに回転する。 At this time, regarding the sector-shaped permanent magnet 2a shown by the imaginary line on the right side of FIG.
rotates clockwise in the figure, and when a current is similarly passed radially inward through each conductor, the rotary movable body 1 rotates counterclockwise in the figure.

なお、左側の扇形永久磁石２ｂは、それと対面
する導線パターン５ｂの電流方向が逆となり、回
転可動体１のトルクは、右側の扇形永久磁石２ａ
に係るものと同じになる。 Note that the electric current direction of the conductor pattern 5b facing the left fan-shaped permanent magnet 2b is opposite to that of the right fan-shaped permanent magnet 2a.
It will be the same as that related to.

また、この回転駆動に際して、回転可動体１に
生じるトルクは、回転可動体１が回転して扇形永
久磁石２ａ，２ｂの位置を変えても、導線パター
ン５ａ，５ｂと扇形永久磁石２ａ，２ｂの対向面
積が一定に重なつている範囲は、そこに流れる電
流値に応じて常に一定に発生し、そのトルクの向
きは、前述の如く、導線パターン５ａ，５ｂに流
れる電流の向きによつて定まる。 Further, during this rotational drive, even if the rotary movable body 1 rotates and the positions of the sector-shaped permanent magnets 2a, 2b are changed, the torque generated in the rotary movable body 1 will be The range where the opposing areas overlap is always generated in a constant manner depending on the current value flowing there, and the direction of the torque is determined by the direction of the current flowing through the conductor patterns 5a and 5b, as described above. .

上述のロータリーアクチユエータにおける平面
コイル５は、扇形永久磁石２ａ，２ｂと固定部の
ヨーク部材６間のギヤツプｇを小さくして、平面
コイル５の径方向に延びる導線５ａ，５ｂと交鎖
する磁界の磁束密度を高くする必要上、極薄い偏
平なものが要求される。そのため、コイル導線は
同一平面上に並列に並べられて巻回される。 The planar coil 5 in the rotary actuator described above reduces the gap g between the sector-shaped permanent magnets 2a, 2b and the yoke member 6 of the fixed part, and intersects with the conducting wires 5a, 5b extending in the radial direction of the planar coil 5. Due to the need to increase the magnetic flux density of the magnetic field, an extremely thin and flat one is required. Therefore, the coil conductors are arranged and wound in parallel on the same plane.

また、平面コイル５の中央部には、回転軸４が
貫通しているため、径方向に延びる導線５ａ，５
ｂの軸芯部は、回転軸４を迂回して巻回され、こ
の軸芯部を迂回する各導線が並列した幅ｗは、径
方向に延びる導線５ａ，５ｂの有効に利用される
長さｌを短くしている。 In addition, since the rotating shaft 4 passes through the center of the planar coil 5, the conductive wires 5a, 5 extending in the radial direction
The axial core portion b is wound around the rotating shaft 4, and the width w in which the conductive wires that bypass this axial core portion are arranged in parallel is the length that is effectively used for the conductive wires 5a and 5b extending in the radial direction. l is shortened.

出力トルクは、径方向に延びる導線５ａ，５ｂ
と扇形永久磁石２ａ，２ｂの重さなり面積に比例
するため、該導線５ａ，５ｂの長さｌが短いと出
力トルクは大きくならない。 The output torque is generated by the conductors 5a and 5b extending in the radial direction.
Since this is proportional to the weight and area of the sector-shaped permanent magnets 2a and 2b, the output torque will not become large if the length l of the conducting wires 5a and 5b is short.

本考案は、上記欠点を解消するもので、以下具
体的実施例図に基き詳述する。なお、実施例の図
面において、前述の従来のものと同一部分につい
ては、同一符号で示し、その詳細な説明は省略す
る。 The present invention is intended to eliminate the above-mentioned drawbacks, and will be described in detail below with reference to specific embodiment figures. In the drawings of the embodiment, parts that are the same as those of the above-mentioned conventional system are designated by the same reference numerals, and detailed explanation thereof will be omitted.

本考案における回転可動体１の回転軸４は、回
転部のヨーク部材７を固設したところで軸が終端
し、その軸端部４ｂは軸受部材１０をもつて支承
されている。 The rotary shaft 4 of the rotary movable body 1 according to the present invention terminates at the point where the yoke member 7 of the rotating portion is fixed, and the shaft end portion 4b is supported by a bearing member 10.

軸受部材１０は、１対の脚１０ａ，１０ｂとそ
の脚間に掛け渡された架橋部１０ｂからなり、材
料は非磁性体でできている。 The bearing member 10 consists of a pair of legs 10a, 10b and a bridge section 10b spanning between the legs, and is made of a non-magnetic material.

また、平面コイル５における径方向に延びる導
線５ａ，５ｂは、軸芯並びにその近傍を通る導線
５ｃによつて直線状に継がり、弦部を直線とする
半円形に、巻線形がなつている。 Further, the conducting wires 5a and 5b extending in the radial direction of the planar coil 5 are connected in a straight line by a conducting wire 5c passing through the axis and its vicinity, and the winding line is formed in a semicircle with the string portion being a straight line. .

軸受部材１０は、上記軸芯部を通る導線５ｃ
を、架橋部１０ｂが跨ぎ、かつその架橋部１０ｂ
の両端の脚１０ａ，１０ａが、平面コイル５の支
持部材５ｄ並びに固定部のヨーク部材６に設けた
孔５ｅ，６ａに嵌め込まれて、回り止めされてい
る。 The bearing member 10 has a conductive wire 5c passing through the shaft core portion.
The bridge section 10b straddles the bridge section 10b, and the bridge section 10b
Legs 10a, 10a at both ends of the coil are fitted into holes 5e, 6a provided in the support member 5d of the planar coil 5 and the yoke member 6 of the fixed portion, and are prevented from rotating.

軸受部材１０の架橋部１０ｂにおける回転軸４
の軸芯に当るところは、回転軸４と連結する連結
軸１０ｃが突設されている（第５図ａ参照）。 Rotating shaft 4 at bridge portion 10b of bearing member 10
A connecting shaft 10c that connects to the rotating shaft 4 is provided protrudingly at a portion corresponding to the axis of the rotary shaft 4 (see FIG. 5a).

この連結軸１０ｃは、回転軸４の軸端４ｂに設
けた軸孔４ｃに嵌合し、かつ、軸孔４ｃの孔底４
ｄにはスラスト軸受用ボール１１が挿入され、該
ボール１１は、連結軸１０ｃの軸端面１０ｄに当
接して、回転軸４をスラスト方向に枢支してい
る。 This connecting shaft 10c is fitted into a shaft hole 4c provided at the shaft end 4b of the rotating shaft 4, and is fitted into a hole bottom 4c of the shaft hole 4c.
A thrust bearing ball 11 is inserted into d, and the ball 11 abuts against the shaft end surface 10d of the connecting shaft 10c to pivotally support the rotating shaft 4 in the thrust direction.

回転可動体１に固設された扇形永久磁石２ａ，
２ｂは、固定部のヨーク部材６を常時吸引し、そ
の吸引力は、ボール１１へスラスト荷重として常
に加わり、それによつて、軸受部材１０と回転軸
４とが軸線方向にガタを生じることなく、安定し
て連結する。 A sector-shaped permanent magnet 2a fixed to the rotary movable body 1,
2b constantly attracts the yoke member 6 of the fixed part, and the suction force is always applied to the ball 11 as a thrust load, thereby preventing the bearing member 10 and the rotating shaft 4 from rattling in the axial direction. Connect stably.

（他の実施例） 第５図ｂは、前記軸受部材１０とは異る実施例
を示すもので、この実施例における軸受部材１
０′、架橋部１０ｂにおける軸芯に当るところへ、
円垂形のボール受け凹み１０ｅを設けてある。(Other Embodiments) FIG. 5b shows an embodiment different from the bearing member 10 described above, and the bearing member 1 in this embodiment.
0', to the location corresponding to the axis of the bridge portion 10b,
A round ball receiving recess 10e is provided.

この軸受部材１０′による場合は、回転軸４の
軸端４ｂの軸孔４ｃをボール１１の直径より浅く
するか、もしくは架橋部１０ｂの凹み１０ｅと同
様な円垂形の凹みにして、ボール１１が回転軸４
の端面より突出するようにしておき、そのボール
１１の突出した部分をボール受け凹み１０ｅで支
承するようにする。 In the case of this bearing member 10', the shaft hole 4c of the shaft end 4b of the rotating shaft 4 is made shallower than the diameter of the ball 11, or the ball 11 is made into a circular recess similar to the recess 10e of the bridge portion 10b. is the rotation axis 4
The protruding portion of the ball 11 is supported by the ball receiving recess 10e.

第７図は、平面コイル５′を、絶縁被覆電線を
巻回して構成した実施例を示すものである。 FIG. 7 shows an embodiment in which the planar coil 5' is constructed by winding an insulated wire.

従来の平面コイル５は、軸芯部を迂回し、かつ
偏平にコイルが巻回されるため、プリント配線技
術によつて作成されていたが、本考案の如く、迂
回部をなくして、その部分が直線状となるため、
線材を巻回した平面コイル５′が容易に作られ、
それを用いることができる。 The conventional planar coil 5 was created by printed wiring technology in order to bypass the axial center and wind the coil flatly, but as in the present invention, the detour is eliminated and the coil is wound flatly. is a straight line, so
A planar coil 5' made of wire wound is easily made.
You can use it.

（本考案の効果） 以上の如く本考案によれば、平面コイルの導線
の巻線形状が単純になり、そのため、平面コイル
の作成がプリント配線技術のみによらず、線材を
巻回した偏平なコイルを容易に作ることができる
とともに、アクチユエータしてトルク発生に必要
な径方向に延びる導線部分の有効に使用される長
さが長くなつて、出力トルクを増すことができ
る。(Effects of the present invention) As described above, according to the present invention, the winding shape of the conductive wire of the planar coil is simplified, and therefore, the planar coil can be created not only by printed wiring technology but also by flat winding of wire material. The coil can be easily made, and the effectively used length of the radially extending conductive wire portion necessary for acting as an actuator to generate torque is increased, so that the output torque can be increased.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は、本考案の第１実施例を示すロータリ
ーアクチユエータの中央縦断面図、第２図は、第
１図における−線断面図、第３図は、同じく
−線断面図、第４図は、同じく−線断面
図、第５図は、軸受部材の異る実施例を対比して
示す斜視図、第６図は、第１図の平面図、第７図
は、本考案に係る平面コイルの異る実施例を示す
第４図と同様の縦断面図、第８図、第９図は、従
来のロータリーアクチユエータを示すもので、第
８図は、第１図と同様の中央縦断面図、第９図
は、第８図おける−線断面図である。 １……回転可動体、２ａ，２ｂ……扇形永久磁
石、３……固定ベース部材、４……回転軸、５…
…平面コイル、６，７……ヨーク部材、８……出
力レバー、１０……軸受部材、１１……ボール。 FIG. 1 is a central vertical sectional view of a rotary actuator showing a first embodiment of the present invention, FIG. 2 is a sectional view taken along the - line in FIG. 1, and FIG. 4 is a sectional view taken along the same line, FIG. 5 is a perspective view comparing different embodiments of the bearing member, FIG. 6 is a plan view of FIG. 1, and FIG. A vertical cross-sectional view similar to FIG. 4 showing a different embodiment of such a planar coil, and FIGS. 8 and 9 show a conventional rotary actuator, and FIG. 8 is similar to FIG. 1. FIG. 9 is a cross-sectional view taken along the - line in FIG. 8. DESCRIPTION OF SYMBOLS 1...Rotating movable body, 2a, 2b...Sector-shaped permanent magnet, 3...Fixed base member, 4...Rotating shaft, 5...
... Planar coil, 6, 7 ... Yoke member, 8 ... Output lever, 10 ... Bearing member, 11 ... Ball.

Claims (1)

【実用新案登録請求の範囲】 (1) 回転軸４の軸線に直交する平面をもち、回転
軸４と共に回動するヨーク部材７と、このヨー
ク部材７の平面部の一側に固着され、かつ回転
軸４の軸線方向に磁化方向をもち、その磁化方
向に偏平な扇形永久磁石２ａ，２ｂをもつて構
成された回転可動体１と、 中空内部にロータリーアクチユエータの機構
を収めるベース本体３ａと、中空内部の開口部
を塞ぐ蓋３ｂをもつて構成され、偏平なケーシ
ングを兼ねて回転可動体１の回転軸４を枢支す
るようにした固定ベース部材３と、 固定ベース部材３のベース本体３ａにおける
回転軸４と直交する底面３ｃの内面に、前記永
久磁石２と対面し、固定部のヨーク部材６に重
ねられて固設され、かつ径方向に延びる複数の
導線５ａ，５ｂを弦部に含んで、概略半円形の
巻線形状をもつて支持部材５ｃに平面状に巻回
した平面コイル５と、 を具備し、前記扇形永久磁石２ａ，２ｂの磁界
と、前記平面コイル５における径方向に延びた
導線５ａ，５ｂに流れる電流との電磁作用によ
つて、その電流方向に応じて、回転可動体１を
正逆両方向に回転させうるようにしたロータリ
ーアクチユエータにおいて、 扇形永久磁石２ａ，２ｂと電磁作用を行なう
半円形の平面コイル５における径方向へ延びる
導線５ａ，５ｂを、回転可動体１の回転中心近
傍を通過する導線５ｃで連結して、弦部を直線
状とした半円形の平面コイル５と、その平面コ
イル５における回転可動体１の回転中心近傍の
導線５ｃを跨ぐ架橋部１０ｂを有し、その架橋
部１０ｂ両端の脚１０ａ，１０ａの下端を、平
面コイル５の支持部材５ｃと固定部のヨーク部
材６に設けた孔５ｅ，６ａに嵌着し、さらにの
架橋部１０ｂに、前記回転可動体１における回
転軸４の一端を支持した軸受部材１０とを備え
てなることを特徴とするロータリーアクチユエ
ータ。 (2) 軸受部材１０の架橋部１０ｂに、回転可動体
１と連結する連結軸１０ｃを突設してなること
を特徴とする実用新案登録請求の範囲第(1)項に
記載のロータリーアクチユエータ。 (3) 軸受部材１０の架橋部１０ｂに、回転可動体
１の軸芯を支承するボール軸受のボール受け凹
み１０ｅを設けてなることを特徴とする実用新
案登録請求の範囲第(1)項に記載のロータリーア
クチユエータ。[Claims for Utility Model Registration] (1) A yoke member 7 having a plane perpendicular to the axis of the rotating shaft 4 and rotating together with the rotating shaft 4, and a yoke member 7 fixed to one side of the flat part of the yoke member 7, and A rotary movable body 1 having a magnetization direction in the axial direction of a rotating shaft 4 and having flat fan-shaped permanent magnets 2a and 2b in the magnetization direction, and a base body 3a in which a rotary actuator mechanism is housed in a hollow interior. and a fixed base member 3 having a lid 3b that closes an opening in the hollow interior and serving as a flat casing to pivotally support the rotating shaft 4 of the rotary movable body 1; and a base of the fixed base member 3. A plurality of conductive wires 5a and 5b, which face the permanent magnet 2, are stacked and fixed on the yoke member 6 of the fixed part, and extend in the radial direction, are attached to the inner surface of the bottom surface 3c orthogonal to the rotation axis 4 of the main body 3a. a planar coil 5 having an approximately semicircular winding shape and wound in a planar manner around a support member 5c; A rotary actuator that can rotate the rotary movable body 1 in both forward and reverse directions depending on the direction of the current by electromagnetic interaction with the current flowing through the conductive wires 5a and 5b extending in the radial direction. The conductive wires 5a and 5b extending in the radial direction of the semicircular planar coil 5 that performs electromagnetic action with the magnets 2a and 2b are connected by a conductive wire 5c passing near the center of rotation of the rotary movable body 1, so that the string portion is linear. It has a semicircular planar coil 5 and a bridge section 10b that straddles the conductive wire 5c near the rotation center of the rotary movable body 1 in the planar coil 5. A bearing member 10 that is fitted into the supporting member 5c of No. 5 and the holes 5e and 6a provided in the yoke member 6 of the fixed portion, and further supports one end of the rotating shaft 4 of the rotary movable body 1 on the bridging portion 10b. A rotary actuator characterized by: (2) The rotary actuator according to claim (1) of the utility model registration, characterized in that a connecting shaft 10c that connects with the rotary movable body 1 is provided protruding from the bridge portion 10b of the bearing member 10. Eta. (3) The utility model registered in claim (1) is characterized in that the bridging portion 10b of the bearing member 10 is provided with a ball receiving recess 10e for a ball bearing that supports the axis of the rotary movable body 1. Rotary actuator as described.