JPH09100739A - Actuator - Google Patents
ActuatorInfo
- Publication number
- JPH09100739A JPH09100739A JP7286641A JP28664195A JPH09100739A JP H09100739 A JPH09100739 A JP H09100739A JP 7286641 A JP7286641 A JP 7286641A JP 28664195 A JP28664195 A JP 28664195A JP H09100739 A JPH09100739 A JP H09100739A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- coil
- air gap
- permanent magnet
- actuator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、エンジンへの供給
空気量を制御するスロットルアクチュエータ用として、
又、アイドル・スピード・コントロール（ＩＳＣ）用と
して好適な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 throttle actuator for controlling the amount of air supplied to an engine,
It also relates to an actuator suitable for idle speed control (ISC).
【０００２】[0002]
【従来の技術】コイル電流に応じて位置を変化させるも
のとして、例えばロータリソレノイドがあり、出願人も
各種のものを既に提案している（特願平７−５６６８６
号）。この種のものの基本的な考え方を図４を用いて説
明する。2. Description of the Related Art For example, there is a rotary solenoid for changing the position according to the coil current, and the applicant has already proposed various types (Japanese Patent Application No. 7-56686).
issue). The basic idea of this type will be described with reference to FIG.
【０００３】図４（ａ）に示されるように、対向する磁
極片１，２の間に永久磁石からなる回転子３を配設し、
電流に応じて生じる起磁力源４からの磁束を利用して回
転子３を回転させる基本構成を有している。As shown in FIG. 4A, a rotor 3 made of a permanent magnet is arranged between the magnetic pole pieces 1 and 2 facing each other.
It has a basic configuration in which the rotor 3 is rotated by using the magnetic flux from the magnetomotive force source 4 generated according to the current.
【０００４】又、回転子３は磁極片１，２で囲まれた主
エアーギャップ５に設けられ、前記主エアーギャップの
両側には副エアーギャップ６−１，６−２が設けられ
る。７はヨークであって各磁極片同士を接続している。
８は磁気抵抗部材である。The rotor 3 is provided in a main air gap 5 surrounded by magnetic pole pieces 1 and 2, and sub air gaps 6-1 and 6-2 are provided on both sides of the main air gap. A yoke 7 connects the magnetic pole pieces to each other.
Reference numeral 8 is a magnetic resistance member.
【０００５】そして、起磁力源のコイルが非通電時に
は、図４（ａ）の位置にて停止している。この理由は副
エアーギャップ６−１，６−２の磁束が零であるときが
最も安定であるからである。なお、回転子３からの磁束
は図のようにＮからＳへ戻る閉磁路を形成している。When the coil of the magnetomotive force source is not energized, it is stopped at the position shown in FIG. 4 (a). This is because it is most stable when the magnetic flux in the sub air gaps 6-1 and 6-2 is zero. The magnetic flux from the rotor 3 forms a closed magnetic path returning from N to S as shown in the figure.
【０００６】次に、コイル励磁をすると、図４（ｂ）に
示される磁束ができ、回転子３を図のように回転する。
励磁方向を変えれば、この逆方向にも回転する。ここで
回転角度は最大で５０度程度であるため、コイルの通電
方向を反対にすれば、１００度程度までは回転は可能で
ある。Next, when the coil is excited, the magnetic flux shown in FIG. 4 (b) is generated and the rotor 3 is rotated as shown in the figure.
If the excitation direction is changed, it will rotate in the opposite direction. Here, since the rotation angle is about 50 degrees at the maximum, it is possible to rotate up to about 100 degrees by reversing the energizing directions of the coils.
【０００７】[0007]
【発明が解決しようとする課題】通常バルブの制御には
９０度の回転が必要であるから、通電方向の正逆転によ
りバルブの要求制御範囲は満足することができる。しか
しコイルのドライバ回路によって電流方向を切替える
か、あるいは正転用のコイルと反転用のコイルの２つの
コイルを用意しなければならない。この場合は非通電時
は中立位置、即ち、バルブ開度が半開状態となる。Normally, the valve must be rotated by 90 degrees to control the valve. Therefore, the required control range of the valve can be satisfied by the forward and reverse rotation of the energizing direction. However, it is necessary to switch the current direction by a coil driver circuit or prepare two coils, a forward coil and a reverse coil. In this case, when not energized, the neutral position, that is, the valve opening is in the half open state.
【０００８】一方、感温アクチュエータにおいては、温
度感知は感温磁性材の飽和磁束密度変化を利用する。よ
って、感温磁性材が磁気飽和を生じる状態まで磁界を印
加した状態から、感温アクチュエータとしての機能が得
られる（図５参照）。On the other hand, in the temperature-sensitive actuator, temperature sensing utilizes a change in saturation magnetic flux density of the temperature-sensitive magnetic material. Therefore, the function as a temperature-sensitive actuator can be obtained from the state in which the magnetic field is applied until the temperature-sensitive magnetic material causes magnetic saturation (see FIG. 5).
【０００９】このため、励磁コイルに所定の電流値以上
を通電した状態で使用することとなるため、制御範囲が
狭いと言う問題があった。又、所定の電流値以下ではロ
ータが大きく回転してしまい、応動感知精度が悪化して
しまう。For this reason, since the excitation coil is used in a state in which a predetermined current value or more is energized, there is a problem that the control range is narrow. Further, when the current value is less than a predetermined value, the rotor rotates greatly and the response sensing accuracy deteriorates.
【００１０】又、この種の従来例として、例えばＵＳＰ
４１０３１９１号があるが、本ＵＳＰはロータの対向位
置にマグネットを配置し、マグネットの吸引力を利用し
たものであり、マグネットの位置をその都度移動するこ
とを要する。しかもロータとマグネットの相対位置関係
によるトルク変動が急峻であって、トルクの緩やかな変
化に対応する処理には不向きである。As a conventional example of this type, for example, USP
Although there is US Pat. No. 4,103,191, this USP is one in which a magnet is arranged at a position facing the rotor and the attractive force of the magnet is used, and it is necessary to move the position of the magnet each time. Moreover, the torque variation due to the relative positional relationship between the rotor and the magnet is steep, and it is unsuitable for the processing corresponding to the gradual change of the torque.
【００１１】本発明は上記課題を解決するためになされ
たものであり、励磁コイルの通電方向が一方向で、かつ
コイルの非通電時のフェールセーフが可能であると共
に、感温アクチュエータとしての使用時の温度感知精度
の高いアクチュエータを提供することを目的としてい
る。The present invention has been made in order to solve the above-mentioned problems, and the excitation coil can be energized in one direction, and fail-safe can be achieved when the coil is not energized, and it can be used as a temperature-sensitive actuator. An object of the present invention is to provide an actuator with high temperature sensing accuracy.
【００１２】[0012]
【課題を解決するための手段】本発明の［請求項１］に
係るアクチュエータは、２つの副エアーギャップを介し
て対向する２つの磁極片が主エアーギャップを形成し、
前記主エアーギャップ内には駆動軸と一体に移動する永
久磁石からなる移動体を配設し、前記２つの磁極片を磁
気抵抗部材を介して連結する第１の連結磁路には励磁コ
イルを備え、前記２つの磁極片の一方を永久磁石を介し
て連結する第２の連結磁路とした。In the actuator according to [Claim 1] of the present invention, two magnetic pole pieces facing each other through two sub air gaps form a main air gap,
A moving body made of a permanent magnet that moves integrally with the drive shaft is provided in the main air gap, and an exciting coil is provided in a first connecting magnetic path that connects the two magnetic pole pieces via a magnetoresistive member. A second connecting magnetic path is provided which connects one of the two magnetic pole pieces via a permanent magnet.
【００１３】したがってコイルが非励磁である常時は、
第２連結磁路にある永久磁石によって移動体を反時計方
向に付勢しておき、コイルの励磁の程度によって移動体
を中立状態とし、更なる励磁によって時計方向に付勢す
れば、一方向の励磁のみでフェールセーフを考慮した弁
の開閉が可能となる。Therefore, when the coil is de-energized at all times,
If the moving body is biased in the counterclockwise direction by the permanent magnet in the second connection magnetic path, the moving body is set to the neutral state depending on the degree of excitation of the coil, and is further biased in the clockwise direction, it is unidirectional It is possible to open and close the valve in consideration of fail-safe by only exciting the.
【００１４】本発明の［請求項２］に係るアクチュエー
タは、［請求項１］において、磁気抵抗部材の一部に感
温磁性材を配置した。このようにすれば感温アクチュエ
ータとしての機能が得られるばかりか、制御範囲が広く
かつ温度感知精度も高くなる。The actuator according to [Claim 2] of the present invention is the actuator according to [Claim 1], in which a temperature-sensitive magnetic material is arranged in a part of the magnetoresistive member. In this way, not only the function as a temperature sensitive actuator can be obtained, but also the control range is wide and the temperature sensing accuracy is high.
【００１５】[0015]
【発明の実施の形態】以下、図面を参照して発明の実施
の形態を説明する。図１は本発明のアクチュエータの実
施の形態を示す図である。図１において、図４と同一部
分については同一符号を付して説明を省略する。なお、
図１の特徴部分は磁極片の一方に永久磁石（連結部マグ
ネット）９を設ける点である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of an actuator of the present invention. In FIG. 1, the same parts as those in FIG. In addition,
A characteristic part of FIG. 1 is that a permanent magnet (connecting portion magnet) 9 is provided on one of the pole pieces.
【００１６】次に作用について説明する。コイル４の非
通電時は、連結部マグネット９からの磁束が移動体（回
転子）３を通ってループを形成し、その結果、移動体
（回転子）３は図示のように反時計方向に移動（回転）
する。これが図１（ａ）である。Next, the operation will be described. When the coil 4 is not energized, the magnetic flux from the connecting portion magnet 9 forms a loop through the moving body (rotor) 3, and as a result, the moving body (rotor) 3 moves counterclockwise as shown. Move (rotate)
I do. This is FIG. 1 (a).
【００１７】コイル４が通電されると、コイル４にて生
成される磁束は連結マグネット９を経由して磁極片とヨ
ークの周縁を一巡するループを形成する。したがって移
動体（回転子）は中立位置をとり移動体（回転子）のＮ
極からの磁束はＳ極へ戻るループを形成する。これが図
１（ｂ）である。When the coil 4 is energized, the magnetic flux generated in the coil 4 passes through the connecting magnet 9 and forms a loop that goes around the magnetic pole piece and the periphery of the yoke. Therefore, the moving body (rotor) is in the neutral position and the moving body (rotor) has N
The magnetic flux from the pole forms a loop back to the south pole. This is FIG. 1 (b).
【００１８】更にコイル起磁力（電流）を増加すると、
移動体（回転子）３と第１連結磁路のコイル内を通るル
ープも形成され、移動体（回転子）は更に回転する。こ
れが図１（ｃ）である。When the coil magnetomotive force (current) is further increased,
A loop passing through the moving body (rotor) 3 and the coil of the first coupling magnetic path is also formed, and the moving body (rotor) further rotates. This is FIG. 1 (c).
【００１９】又、磁気抵抗部に感温磁性部材を配置した
ときも中立位置（連結部マグネットが無い状態での）で
は、十分な磁界が発生して広開度の移動体（回転子）制
御が可能となり、不飽和の不安定な領域を使用しないで
すむ。Further, even when the temperature-sensitive magnetic member is arranged in the magnetic resistance portion, a sufficient magnetic field is generated in the neutral position (without the connecting portion magnet) to control a wide-opening moving body (rotor). It is possible to avoid using the unsaturated and unstable region.
【００２０】これらの状態の特性を示したのが図２であ
り、従来例に比して一方向の電流のみで、広開度の移動
体（回転子）の制御が実現でき、非通電時にバルブは閉
弁状態になる。The characteristics of these states are shown in FIG. 2. Compared with the conventional example, it is possible to realize the control of the movable body (rotor) with a wide opening by only the current flowing in one direction, and when it is not energized. The valve is closed.
【００２１】図３は従来例と本願のものとの効果上の差
異を示す図である。図は横軸に電流をとり、縦軸に回転
角をとって示したものである。従来例は電流の方向を変
えて所定回転角を得ていたのに対し、本願のものは一方
向の電流で所定回転角が得られることがわかる。FIG. 3 is a diagram showing the difference in effect between the conventional example and that of the present invention. In the figure, the horizontal axis represents current and the vertical axis represents rotation angle. It can be seen that in the conventional example, the predetermined rotation angle is obtained by changing the direction of the current, whereas in the case of the present application, the predetermined rotation angle is obtained by the current in one direction.
【００２２】更にに言えば、本願のものは移動体（回転
子）の回転特性が平行移動するだけで、回転角／電流は
変化せず、コイルの電流に比例した回転量が得られる。Furthermore, in the present invention, the rotational characteristic of the moving body (rotor) is moved in parallel, the rotation angle / current does not change, and a rotation amount proportional to the coil current is obtained.
【００２３】[0023]
【発明の効果】以上説明したように、本発明によれば２
つの副エアーギャップを介して２つの磁極片にて主エア
ーギャップを形成し、前記主エアーギャップ内には駆動
軸と一体に移動する永久磁石からなる移動体を設けると
共に、２つの磁極片を介して連結する第１の連結磁路に
励磁コイルを設け、２つの磁極片を永久磁石を介して第
２の連結磁路とするようにしたので、励磁コイルの非通
電時にはフェールセーフが可能となり、励磁コイル電流
は一方向のみでよいばかりか、感温アクチュエータの感
温感知精度も向上する。As described above, according to the present invention, 2
A main air gap is formed by two magnetic pole pieces through one sub air gap, and a moving body made of a permanent magnet that moves integrally with the drive shaft is provided in the main air gap, and the two magnetic pole pieces are interposed. Since the exciting coil is provided in the first connecting magnetic path to be connected with each other so that the two magnetic pole pieces serve as the second connecting magnetic path through the permanent magnets, fail-safe becomes possible when the exciting coil is not energized, Not only does the exciting coil current have to be in one direction, but the temperature sensing accuracy of the temperature sensing actuator is also improved.
【図１】本発明のアクチュエータの実施の形態を示す
図。FIG. 1 is a diagram showing an embodiment of an actuator of the present invention.
【図２】本発明の効果を示す特性図。FIG. 2 is a characteristic diagram showing the effect of the present invention.
【図３】本発明と従来例との効果上の差異を示す特性
図。FIG. 3 is a characteristic diagram showing a difference in effect between the present invention and a conventional example.
【図４】従来のアクチュエータを示す図。FIG. 4 is a diagram showing a conventional actuator.
【図５】従来のアクチュエータの特性図。FIG. 5 is a characteristic diagram of a conventional actuator.
１，２ 磁極片 ３ 回転子 ４ 起磁力源 ５ 主エアーギャップ ６ 副エアーギャップ ７ ヨーク ８ 磁気抵抗部 ９ 永久磁石（連結部マグネット） 1, 2 Magnetic pole pieces 3 Rotor 4 Magnetomotive force source 5 Main air gap 6 Sub air gap 7 Yoke 8 Magnetoresistive part 9 Permanent magnet (coupling part magnet)
Claims (2)
る２つの磁極片が主エアーギャップを形成し、前記主エ
アーギャップ内には駆動軸と一体に移動する永久磁石か
らなる移動体を配設し、前記２つの磁極片を磁気抵抗部
材を介して連結する第１の連結磁路には励磁コイルを備
え、前記２つの磁極片の一方を永久磁石を介して連結す
る第２の連結磁路としたことを特徴とするアクチュエー
タ。1. Two magnetic pole pieces facing each other through two sub air gaps form a main air gap, and a moving body made of a permanent magnet that moves integrally with a drive shaft is provided in the main air gap. An exciting coil is provided in a first connecting magnetic path that connects the two magnetic pole pieces via a magnetoresistive member, and a second connecting magnetic path that connects one of the two magnetic pole pieces via a permanent magnet. The actuator characterized in that
したことを特徴とする請求項１記載のアクチュエータ。2. The actuator according to claim 1, wherein a temperature-sensitive magnetic material is arranged on a part of the magnetoresistive member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28664195A JP3589324B2 (en) | 1995-10-06 | 1995-10-06 | Actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28664195A JP3589324B2 (en) | 1995-10-06 | 1995-10-06 | Actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09100739A true JPH09100739A (en) | 1997-04-15 |
| JP3589324B2 JP3589324B2 (en) | 2004-11-17 |
Family
ID=17707057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28664195A Expired - Fee Related JP3589324B2 (en) | 1995-10-06 | 1995-10-06 | Actuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3589324B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017144031A1 (en) * | 2016-02-24 | 2017-08-31 | Rieter Cz S.R.O. | Electromagnetic device for eliminating a yarn loop when winding yarn on a cross-wound bobbin on a spinning machine at a constant speed of the yarn production |
| CN109071144A (en) * | 2016-02-24 | 2018-12-21 | 里特捷克有限公司 | For eliminating the calutron of yarn ring when the winding yarn on cross-wound bobbin tube on spinning machine of the constant speed with yarn production |
-
1995
- 1995-10-06 JP JP28664195A patent/JP3589324B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017144031A1 (en) * | 2016-02-24 | 2017-08-31 | Rieter Cz S.R.O. | Electromagnetic device for eliminating a yarn loop when winding yarn on a cross-wound bobbin on a spinning machine at a constant speed of the yarn production |
| CN109071144A (en) * | 2016-02-24 | 2018-12-21 | 里特捷克有限公司 | For eliminating the calutron of yarn ring when the winding yarn on cross-wound bobbin tube on spinning machine of the constant speed with yarn production |
| US10793392B2 (en) | 2016-02-24 | 2020-10-06 | Rieter Cz S.R.O. | Electromagnetic device for eliminating a yarn loop when winding yarn on a cross-wound bobbin on a spinning machine at a constant speed of the yarn production |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3589324B2 (en) | 2004-11-17 |
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