JPH05214911A - Solenoid valve - Google Patents
Solenoid valveInfo
- Publication number
- JPH05214911A JPH05214911A JP4042087A JP4208792A JPH05214911A JP H05214911 A JPH05214911 A JP H05214911A JP 4042087 A JP4042087 A JP 4042087A JP 4208792 A JP4208792 A JP 4208792A JP H05214911 A JPH05214911 A JP H05214911A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- magnetic flux
- driving force
- gap
- electromagnet
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
- F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
- F01L2009/2115—Moving coil actuators
Landscapes
- Valve Device For Special Equipments (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はシリンダの吸排気口に設
けられ、電磁力により開閉駆動される電磁駆動バルブに
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetically driven valve which is provided at an intake / exhaust port of a cylinder and is opened / closed by an electromagnetic force.
【０００２】[0002]
【従来の技術】シリンダに配置された吸排気バルブは従
来からクランク軸の回転に基づいて駆動されるカムシャ
フトやロッカーアームなどにより機械的に開閉弁が行わ
れるが、クランク軸の回転位相に同期するため開閉作動
の自由度が狭いので、電磁力を用いて自由度を大にした
電磁バルブが開発されている。2. Description of the Related Art An intake / exhaust valve arranged in a cylinder is mechanically opened / closed by a camshaft, a rocker arm, etc. driven based on rotation of a crankshaft, but is synchronized with a rotation phase of the crankshaft. Therefore, since the degree of freedom of opening and closing operation is narrow, an electromagnetic valve having a large degree of freedom by using electromagnetic force has been developed.
【０００３】このような電磁バルブとして、例えば本出
願人による特開平３−１５００６号公報に示された電磁
力バルブ駆動装置があるが、バルブステムに磁極を備
え、これを固定磁極の励磁コイルへの通電による磁気力
にて駆動しているが、バルブステムに設けた磁極により
重量が増大する不都合があるため、ダイナミックスピー
カのようにセンタヨークに遊嵌された可動コイルにバル
ブステムを連結したボイスコイルモータ（ＶＣＭ）型の
電磁バルブが試みられている。As such an electromagnetic valve, for example, there is an electromagnetic force valve drive device disclosed in Japanese Patent Laid-Open No. 3-15006 by the present applicant. However, a valve stem is provided with a magnetic pole, and this is used as an exciting coil having a fixed magnetic pole. Although it is driven by the magnetic force generated by the energization of the valve stem, there is a disadvantage that the weight increases due to the magnetic poles provided on the valve stem. Therefore, like the dynamic speaker, the voice that connects the valve stem to the movable coil loosely fitted to the center yoke is used. Coil motor (VCM) type electromagnetic valves have been tried.
【０００４】[0004]
【発明が解決しようとする課題】上述のＶＣＭ型のバル
ブ駆動機構にて駆動力の増大を図るには可動コイルが配
置される空隙の磁束密度の上昇が不可欠であるが、永久
磁石の磁気による磁束密度の上昇には限界があり、また
大きな駆動力を要する駆動の初期を電磁石にて行えば駆
動力が増すが、このため磁性体からなる被吸引体が電磁
バルブに付加されて、その応答性が欠けるという問題が
ある。In order to increase the driving force in the above-mentioned VCM type valve driving mechanism, it is essential to increase the magnetic flux density in the air gap in which the movable coil is arranged. There is a limit to the increase in magnetic flux density, and the driving force increases if the electromagnet is used in the initial stage of driving that requires a large driving force. There is a problem of lack of sex.
【０００５】本発明はこのような問題に鑑みてなされた
ものであり、その目的は電磁バルブの応答性を確保する
とともに、その駆動力を増大させようとする電磁駆動バ
ルブを提供することにある。The present invention has been made in view of the above problems, and an object thereof is to provide an electromagnetically driven valve that secures the response of the electromagnetic valve and increases its driving force. .
【０００６】[0006]
【課題を解決するための手段】上述の目的を達成するた
めに本発明によれば、通電された電磁石からの磁束が通
ずる空隙に遊動自在に配置され、電磁バルブが連結され
た可動コイルに電流を通じ前記磁束との電磁力により駆
動が行われる電磁駆動バルブにおいて、前記の空隙と同
一磁気回路上に間隔を隔てて配置され通電初期に吸引さ
れて電磁バルブに初期駆動力を与えるとともに吸着後は
該間隔の磁路を短絡し前記の空隙の磁束密度を増加せし
める吸着板を設けた電磁駆動バルブが提供される。In order to achieve the above object, according to the present invention, a movable coil, which is movably arranged in a gap through which a magnetic flux from an energized electromagnet communicates and which is connected to an electromagnetic valve, supplies a current. In the electromagnetically driven valve that is driven by the electromagnetic force of the magnetic flux through the magnetic flux, it is arranged on the same magnetic circuit as the air gap at a distance and is attracted at the initial stage of energization to give an initial driving force to the electromagnetic valve and after adsorption. Provided is an electromagnetically driven valve provided with an adsorption plate that short-circuits the magnetic path of the gap and increases the magnetic flux density of the air gap.
【０００７】[0007]
【作用】大きな駆動力を要する初期駆動時には、吸着板
の吸引によりロッドを介して初期駆動力を与えるととも
に、この吸引間隔の磁路を短絡して同一磁気回路上の空
隙の磁束密度を増加させるので、可動コイルの駆動力も
大となって初期駆動された電磁バルブが力強く駆動され
る。In the initial driving requiring a large driving force, the initial driving force is given by the suction of the suction plate via the rod, and the magnetic path of this suction interval is short-circuited to increase the magnetic flux density of the air gap on the same magnetic circuit. Therefore, the driving force of the movable coil is also increased and the initially driven electromagnetic valve is strongly driven.
【０００８】[0008]
【実施例】つぎに本発明の実施例について図面を用いて
詳細に説明する。Embodiments of the present invention will now be described in detail with reference to the drawings.
【０００９】図１は本発明にかかる電磁駆動バルブの一
実施例を示す縦断面図である。同図いおいて、１は電磁
バルブであり、そのステム１１はバルブガイド１２によ
り上下に往復自在に軸承され、開弁時には下方に駆動さ
れて茸弁１３がシリンダの吸気口または排気口を開放す
るものである。FIG. 1 is a longitudinal sectional view showing an embodiment of an electromagnetically driven valve according to the present invention. In the figure, 1 is an electromagnetic valve, the stem 11 of which is vertically reciprocally supported by a valve guide 12 and is driven downward when the valve is opened so that a mushroom valve 13 opens an intake port or an exhaust port of a cylinder. To do.
【００１０】２は電磁石で、センタヨーク２１、サイド
ヨーク２２、コイル２３などを備えており、該電磁石２
の上方には磁性体からなる吸着板３、センタヨーク２１
とサイドヨーク２２との空隙には上下に遊動自在な円筒
状の可動コイル４が配置されている。なお、２３は非磁
性体からなる支持材で、センタヨーク２１とサイドヨー
ク２２とを強固に連結させ、両者の間の空隙をその磁束
による吸引力に打勝って保持するものである。Reference numeral 2 denotes an electromagnet, which is provided with a center yoke 21, a side yoke 22, a coil 23 and the like.
Above the table, the attracting plate 3 made of a magnetic material and the center yoke 21
In the space between the side yoke 22 and the side yoke 22, a vertically movable cylindrical movable coil 4 is arranged. Reference numeral 23 is a support material made of a non-magnetic material, which firmly connects the center yoke 21 and the side yoke 22 and holds the gap between them by overcoming the attractive force of the magnetic flux.
【００１１】そして、可動コイル４の下端には底板４１
が取付けられており、該底板４１は電磁バルブ１のステ
ム１１にコッタ１４を介して係着されたバネ受１５の上
方に固着されて、可動コイル４と電磁バルブ１とが連結
されている。A bottom plate 41 is attached to the lower end of the movable coil 4.
The bottom plate 41 is fixed above the spring receiver 15 which is attached to the stem 11 of the electromagnetic valve 1 via the cotter 14, and the movable coil 4 and the electromagnetic valve 1 are connected to each other.
【００１２】また、吸着板３の中心部にはセンタヨーク
２１の中心穴に挿通される非磁性体からなるロッド３１
が取付けられ、その下端は底板４１の上面に配置され
て、閉弁時における吸着板３と電磁石２との間隔が所定
の寸法を保つように形成されている。なお、１６はスプ
リングでその弾性力によってバネ受１５を介し電磁バル
ブ１を押上げて閉弁位置を保持するものである。A rod 31 made of a non-magnetic material is inserted into the center hole of the center yoke 21 at the center of the suction plate 3.
Is attached, and the lower end thereof is arranged on the upper surface of the bottom plate 41, and is formed so that the distance between the adsorption plate 3 and the electromagnet 2 when the valve is closed maintains a predetermined dimension. Reference numeral 16 is a spring that pushes up the electromagnetic valve 1 via the spring receiver 15 by its elastic force and holds the valve closed position.
【００１３】つぎにこのように構成された本実施例の作
動を説明する。Next, the operation of the present embodiment thus constructed will be described.
【００１４】電磁バルブ１の開弁に際して電磁石２のコ
イル２３と可動コイル４とに通電すると、まずセンタヨ
ーク２１や空隙、サイドヨーク２２を介する磁束が吸着
板３を下方に吸引して電磁石２の上面に吸着板３を密着
させる。この吸引により、ロッド３１が底板４１やバネ
受１５を押下して電磁バルブ１の駆動を開始するととも
に、吸着板３の密着により前記の間隔が短絡されて磁路
の磁気抵抗が減じ、センタヨーク２１とサイドヨーク２
２との間の空隙の磁束密度が増大して、通電された可動
コイル４との電磁作用による駆動力が増し、前記のロッ
ド３１の押下と相俟って力強く電磁バルブ１が駆動され
ることになる。When the coil 23 of the electromagnet 2 and the movable coil 4 are energized when the electromagnetic valve 1 is opened, first, the magnetic flux passing through the center yoke 21, the air gap, and the side yoke 22 attracts the attracting plate 3 downward to cause the electromagnet 2 to move. The suction plate 3 is brought into close contact with the upper surface. By this suction, the rod 31 presses the bottom plate 41 and the spring receiver 15 to start driving the electromagnetic valve 1, and the attraction plate 3 is in close contact to short-circuit the interval and reduce the magnetic resistance of the magnetic path. 21 and side yoke 2
The magnetic flux density of the air gap between the electromagnetic valve 1 and the magnet 2 increases, and the driving force by the electromagnetic action with the energized moving coil 4 increases, and the electromagnetic valve 1 is strongly driven in combination with the pressing of the rod 31. become.
【００１５】[0015]
【発明の効果】上述の実施例のように本発明によれば、
大きな駆動力を要する初期駆動時には、吸着板を吸着す
る電磁石の吸引力により電磁バルブの駆動を開始させ、
さらに磁束密度の増した空隙の磁界と通電された可動コ
イルとの電磁力により電磁バルブを駆動するので、大き
な駆動力が得られることになり、また、吸着板は駆動初
期のみで切離されるので、電磁バルブに吸着板の重量の
付加がなく、したがって十分な応答性が得られるという
利点がある。According to the present invention as in the above embodiments,
At the time of initial drive that requires a large drive force, the electromagnetic valve drive is started by the attraction force of the electromagnet that attracts the attraction plate,
Further, since the electromagnetic valve is driven by the electromagnetic force of the magnetic field of the air gap with increased magnetic flux density and the energized moving coil, a large driving force can be obtained, and the suction plate is separated only at the initial stage of driving. However, there is an advantage that the weight of the adsorption plate is not added to the electromagnetic valve and therefore sufficient responsiveness is obtained.
【図１】本発明にかかる電磁駆動バルブの一実施例を示
す縦断面図である。FIG. 1 is a vertical cross-sectional view showing an embodiment of an electromagnetically driven valve according to the present invention.
１…電磁バルブ ２…電磁石 ３…吸着板 ４…可動コイル 1 ... Electromagnetic valve 2 ... Electromagnet 3 ... Adsorption plate 4 ... Moving coil
Claims (1)
に遊動自在に配置され、電磁バルブが連結された可動コ
イルに電流を通じ前記磁束との電磁力により駆動が行わ
れる電磁駆動バルブにおいて、前記の空隙と同一磁気回
路上に間隔を隔てて配置され通電初期に吸引されて電磁
バルブに初期駆動力を与えるとともに吸着後は該間隔の
磁路を短絡し前記の空隙の磁束密度を増加せしめる吸着
板を設けたことを特徴とする電磁駆動バルブ。1. An electromagnetically driven valve, which is movably arranged in a gap through which a magnetic flux from an energized electromagnet communicates and is driven by an electromagnetic force of the magnetic flux by passing an electric current through a movable coil to which an electromagnetic valve is connected. The gap is located on the same magnetic circuit as the gap and is attracted at the beginning of energization to give an initial driving force to the electromagnetic valve, and after adsorption, the magnetic path of the gap is short-circuited to increase the magnetic flux density of the gap. Electromagnetically driven valve characterized by having a plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4042087A JPH05214911A (en) | 1992-01-31 | 1992-01-31 | Solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4042087A JPH05214911A (en) | 1992-01-31 | 1992-01-31 | Solenoid valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05214911A true JPH05214911A (en) | 1993-08-24 |
Family
ID=12626247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4042087A Pending JPH05214911A (en) | 1992-01-31 | 1992-01-31 | Solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05214911A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005201231A (en) * | 2003-02-18 | 2005-07-28 | Peugeot Citroen Automobiles Sa | Electromechanical actuator for valve for internal combustion engine and internal combustion engine provided with such actuator |
-
1992
- 1992-01-31 JP JP4042087A patent/JPH05214911A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005201231A (en) * | 2003-02-18 | 2005-07-28 | Peugeot Citroen Automobiles Sa | Electromechanical actuator for valve for internal combustion engine and internal combustion engine provided with such actuator |
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