JPS63214582A - Solenoid valve - Google Patents
Solenoid valveInfo
- Publication number
- JPS63214582A JPS63214582A JP4701487A JP4701487A JPS63214582A JP S63214582 A JPS63214582 A JP S63214582A JP 4701487 A JP4701487 A JP 4701487A JP 4701487 A JP4701487 A JP 4701487A JP S63214582 A JPS63214582 A JP S63214582A
- Authority
- JP
- Japan
- Prior art keywords
- movable plunger
- core
- valve
- solenoid valve
- valve seat
- 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
- 239000000853 adhesive Substances 0.000 claims abstract description 4
- 230000001070 adhesive effect Effects 0.000 claims abstract description 4
- 230000005284 excitation Effects 0.000 claims 2
- 230000004044 response Effects 0.000 abstract description 6
- 230000004043 responsiveness Effects 0.000 abstract description 4
- 230000013011 mating Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は油圧制御回路に使用される０Ｎ１０ＦＦ形電
磁弁に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to an 0N10FF type solenoid valve used in a hydraulic control circuit.
第２図は従来の電磁弁を示す断面図で、図において、１
ば磁ＷａＳの一部を構成し、本電磁弁の本体であるヨー
ク、２は外周部がヨーク１と同軸に固着され、軸心に後
述する可動プランジャ４を摺動させる穴を有するガイド
、３は外周部がヨーク１と同軸に固着され、カップ状の
円筒部には入力ポート２１を有し、底部には出力ポート
２２を有し、さらにガイド２との空隙部に圧力制御室２
５を設けた形状のバルブシートである。４はガイド２の
内周面と摺動可能で、その一端面側においてバルブシー
ト３のシート面３ａに当接または離脱して弁を形成する
バルブシート面４亀を有し、他端部は磁気回路の一部を
形成し、後述のコイル６の通電、遮断により吸引、離脱
される可動プランジャ、５は絶縁体で構成されたボビン
、６はこのボビン５に巻回され、起磁力を発生させるた
めのコイル、７はコイル６に通電するためのリードワイ
ヤ、８は可動フランシャ４のバルブ面４１をバルブシー
ト面３ａに押し付け、弁を閉弁状態に付勢するためのス
プリング、９はヨーク１と同軸に固着され、軸心部に上
記スプリング８を保持すると共に、磁気回路を構成する
コア、２１はバルブシート３の円筒部に設けられた流体
の入力ポート、２２はバルブシート３の底部に設けられ
た流体の出力ポート、２３はガイド２と可動プランジャ
４の摺動部から漏れる流体を弁体外に逃がすため、コア
９の軸心に形成したドレインポート、２４は可動プラン
ジャ４とコア９の間の空隙部、２５はガイド２、バルブ
シート３、可動プランジャ４で仕切られてなる圧力制御
室、２６はガイド２と可動プランジャ４の摺動部である
。Figure 2 is a sectional view showing a conventional solenoid valve.
A yoke 2, which constitutes a part of the electromagnetic WaS and is the main body of the electromagnetic valve, has an outer circumferential portion fixed coaxially with the yoke 1, and a guide 3 having a hole in the axis for sliding a movable plunger 4, which will be described later. has an outer circumferential portion fixed coaxially with the yoke 1, has an input port 21 in the cup-shaped cylindrical portion, an output port 22 at the bottom, and a pressure control chamber 2 in the gap with the guide 2.
This is a valve seat with a shape provided with 5. 4 is slidable on the inner circumferential surface of the guide 2, and has a valve seat surface 4 that comes into contact with or separates from the seat surface 3a of the valve seat 3 to form a valve on one end surface side, and has a valve seat surface 4 on the other end that forms a valve. A movable plunger that forms part of a magnetic circuit and is attracted and removed by energizing and cutting off a coil 6, which will be described later. 5 is a bobbin made of an insulator, and 6 is wound around this bobbin 5 to generate a magnetomotive force. 7 is a lead wire for energizing the coil 6; 8 is a spring for pressing the valve surface 41 of the movable franchisor 4 against the valve seat surface 3a and biasing the valve to the closed state; 9 is a yoke 1, a core that holds the spring 8 at its axial center and constitutes a magnetic circuit; 21 is a fluid input port provided in the cylindrical portion of the valve seat 3; 22 is the bottom of the valve seat 3; 23 is a drain port formed at the axis of the core 9 to release fluid leaking from the sliding parts of the guide 2 and the movable plunger 4 to the outside of the valve body; 24 is a drain port formed at the axis of the core 9; A gap 25 between them is a pressure control chamber partitioned by the guide 2, the valve seat 3, and the movable plunger 4, and 26 is a sliding portion between the guide 2 and the movable plunger 4.
次に従来装置の動作について説明する。先ず、コイ゛ル
６に通電がされていないときには、可動プランジャ４の
バルブ面４ａがスプリング８の付勢力でバルブシート面
３ａに押、し付けられており、流体を入力ポート２１と
出力ポート２２間で遮断している。Next, the operation of the conventional device will be explained. First, when the coil 6 is not energized, the valve surface 4a of the movable plunger 4 is pressed against the valve seat surface 3a by the urging force of the spring 8, and the fluid is transferred to the input port 21 and the output port 22. It is cut off in between.
従って、圧力制御室２５の圧力は流体の供給圧力に等し
く、高圧状態にある。ガイド２と可動プランジャ４との
摺動部２６の間隙は相当小さく製作されているが、可動
プランジャ４をスムーズに動かすためには、最低１０数
μの間隙を要するので、作動流体はこの間隙を通して、
空隙２４を通り、ドレインポート２３にもれる。このた
め、可動プランジャ４とコア９間の空隙２４に流体が満
ちている状態にある。この状態からコイル６に通電した
場合、コア９に吸引力が発生して、スプリング８の付勢
力に打ち勝ち、可動プランジャ４を吸引しようとする。Therefore, the pressure in the pressure control chamber 25 is equal to the fluid supply pressure and is in a high pressure state. The gap between the sliding part 26 between the guide 2 and the movable plunger 4 is made quite small, but in order to move the movable plunger 4 smoothly, a gap of at least 10-odd microns is required, so the working fluid flows through this gap. ,
It passes through the gap 24 and leaks into the drain port 23. Therefore, the gap 24 between the movable plunger 4 and the core 9 is filled with fluid. When the coil 6 is energized from this state, an attractive force is generated in the core 9, which overcomes the biasing force of the spring 8 and attempts to attract the movable plunger 4.
ところで、空隙２４に満ちた流体の粘度が高い場合、ド
レインポート２３があるにもかかわらず、可動プランジ
ャ４の動きが阻害され、応答性が悪くなるという問題点
があった。特に電磁弁を数１０Ｈｚの周波数で駆動する
必要のある場合は、動作時間のばらつき要因にもなり、
性能面でよくなかった。By the way, when the viscosity of the fluid filling the gap 24 is high, there is a problem in that the movement of the movable plunger 4 is inhibited despite the presence of the drain port 23, resulting in poor responsiveness. Particularly when it is necessary to drive a solenoid valve at a frequency of several tens of Hz, this can become a cause of variation in operating time.
It wasn't good in terms of performance.
このような流体の粘性抵抗によるバルブの応答性を改善
すべく、第３図乃至第５図に示す如く、可動プランジャ
４及びコ１９の吸引または開放時に当接する面、及び可
動プランジャ４とガイド２の当接する面に流体の逃げ溝
２９．２８を形成し、この逃げ溝２９．２８と電磁弁外
部へのドレインポート２３及び第２のドレインポート２
７を連通して、可動プランジャ４の摺動部２６からもれ
る流体を逃がし、可動プランジャ４のポンピング作用を
なりシ、応答性を改善する手法が本発明者により提案さ
れているが、このものは部品の加工個所が多くコスト高
になる欠点があった。In order to improve the responsiveness of the valve due to the viscous resistance of the fluid, as shown in FIGS. A fluid escape groove 29.28 is formed on the contact surface of the solenoid valve, and this escape groove 29.28 connects the drain port 23 to the outside of the solenoid valve and the second drain port 2.
The present inventor has proposed a method in which the fluid leaking from the sliding portion 26 of the movable plunger 4 is communicated with the movable plunger 4 to improve the pumping action and responsiveness of the movable plunger 4. The disadvantage of this method was that it required many parts to be machined, resulting in high costs.
この発明は以上の点に鑑みてなされたもので、構造が簡
単で０Ｎ１０ＦＦ時の応答性を安定させ、且つバルブＯ
ＦＦ時の応答特性を改善した電磁弁を得ようとするもの
である。This invention was made in view of the above points, and has a simple structure, stabilizes the response at 0N10FF, and has a valve O
The objective is to obtain a solenoid valve with improved response characteristics during FF operation.
この発明に係る電磁弁は、そのコアの可動プランジャ対
向面をほぼ円錐形状に形成したものである。In the electromagnetic valve according to the present invention, the surface of the core facing the movable plunger is formed into a substantially conical shape.
この発明における電磁弁は、コア側の先端部をほぼ円錐
状に形成することで、可動プランジャに作用する吸引力
並びに粘着力を制限し、バルブＯＦＦ時の応答特性を大
幅に改善し得る。In the electromagnetic valve according to the present invention, by forming the tip portion on the core side into a substantially conical shape, the suction force and adhesive force acting on the movable plunger can be limited, and the response characteristics when the valve is turned off can be significantly improved.
第１図はこの発明の一実施例を示すもので、上記第２図
に示した従来例と異なるところは、可動プランジャ４と
対向するコア９の先端部断面をほぼ円錐形状３２に構成
し可動プランジャ４とコア９の当接面積を減少させたも
のである。FIG. 1 shows an embodiment of the present invention, which is different from the conventional example shown in FIG. The contact area between the plunger 4 and the core 9 is reduced.
このように構成することにより、可動プランジャ４に作
用する吸引力を限定的に制限すると同時に、粘着力も制
限し、バルブＯＦＦ時の応答特性を大幅に改善し得るも
のとなる。With this configuration, the suction force acting on the movable plunger 4 is limited, and at the same time, the adhesive force is also limited, and the response characteristics when the valve is turned off can be greatly improved.
以上のようにこの発明によれば、可動プランジャと対向
するコア側の当接面をほぼ円錐形に形成するという簡単
な構造で、バルブ０Ｎ１０ＦＦ時の応答性を安定させ、
特性を大幅に改善した電磁弁を得ろことができる。As described above, according to the present invention, with a simple structure in which the contact surface on the core side facing the movable plunger is formed into a substantially conical shape, the response when the valve is 0N10FF is stabilized,
A solenoid valve with significantly improved characteristics can be obtained.
第１＠はとの発明の一実施例を示す断面図、第２図、第
３図はそれぞれ従来の電磁弁を示す断面図、第４図は第
３図のもののガイドを示す斜視図、第５図は第３図のも
ののコアを示す斜視図である。
図中、１はヨーク、２はガイド、３はバルブシート、３
ｍはバルブシート面、４は可動プランジャ、４ａはバル
ブ面、６はコイル、８はスプリング、９はコア、２１は
入力ポート、２２ば出力ポート、２３はドレインポート
、３２はコアの円錐形面である。
尚、図中同一符号は同−又は相当部分を示す。Fig. 1 is a cross-sectional view showing an embodiment of the invention by Hato, Fig. 2 and Fig. 3 are cross-sectional views showing conventional solenoid valves, Fig. 4 is a perspective view showing the guide of Fig. 3, and Fig. FIG. 5 is a perspective view of the core of FIG. 3. In the figure, 1 is a yoke, 2 is a guide, 3 is a valve seat, 3
m is the valve seat surface, 4 is the movable plunger, 4a is the valve surface, 6 is the coil, 8 is the spring, 9 is the core, 21 is the input port, 22 is the output port, 23 is the drain port, 32 is the conical surface of the core It is. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
を構成するコア、この磁気回路中に介装され、その一端
部にバルブ部を形成してなる可動プランジャ、この可動
プランジャと同軸的に配置されたカップ形状で、外周円
筒部に入力ポートが、また底部に出力ポートが形成され
たバルブシートを備え、上記可動プランジャのバルブ部
とバルブシート間で入出力ポート間の油路の開閉を行う
電磁弁において、上記コアと上記可動プランジャの対向
面のコア側の当接面をほぼ円錐形に形成し、上記可動プ
ランジャに作用する吸引力を限定的に制限すると同時に
、上記コアと可動プランジャの当接面積を減らし、粘着
力を制限したことを特徴とする電磁弁。an excitation coil, a core constituting a magnetic circuit magnetized by the excitation coil, a movable plunger interposed in the magnetic circuit and having a valve portion at one end thereof, and a movable plunger disposed coaxially with the movable plunger. A solenoid valve that is cup-shaped and has a valve seat with an input port formed on the outer cylindrical part and an output port formed on the bottom, and opens and closes the oil passage between the input and output ports between the valve part of the movable plunger and the valve seat. The abutment surface on the core side of the facing surface of the core and the movable plunger is formed into a substantially conical shape to limit the suction force acting on the movable plunger, and at the same time, the abutment surface between the core and the movable plunger is formed. A solenoid valve characterized by a reduced area and limited adhesive force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4701487A JPH066992B2 (en) | 1987-03-02 | 1987-03-02 | solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4701487A JPH066992B2 (en) | 1987-03-02 | 1987-03-02 | solenoid valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63214582A true JPS63214582A (en) | 1988-09-07 |
| JPH066992B2 JPH066992B2 (en) | 1994-01-26 |
Family
ID=12763314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4701487A Expired - Lifetime JPH066992B2 (en) | 1987-03-02 | 1987-03-02 | solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH066992B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0250581U (en) * | 1988-10-05 | 1990-04-09 | ||
| CN106545537A (en) * | 2015-09-22 | 2017-03-29 | 无锡市德美嘉机械科技有限公司 | A kind of stroking mechanism of hydraulic servo variable pump |
-
1987
- 1987-03-02 JP JP4701487A patent/JPH066992B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0250581U (en) * | 1988-10-05 | 1990-04-09 | ||
| CN106545537A (en) * | 2015-09-22 | 2017-03-29 | 无锡市德美嘉机械科技有限公司 | A kind of stroking mechanism of hydraulic servo variable pump |
| CN106545537B (en) * | 2015-09-22 | 2018-08-10 | 江苏汉力士液压制造有限公司 | A kind of stroking mechanism of hydraulic servo variable pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH066992B2 (en) | 1994-01-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
| S633 | Written request for registration of reclamation of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313633 |
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| R350 | Written notification of registration of transfer |
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| EXPY | Cancellation because of completion of term |