JPH0527751Y2 - - Google Patents
Info
- Publication number
- JPH0527751Y2 JPH0527751Y2 JP1989052574U JP5257489U JPH0527751Y2 JP H0527751 Y2 JPH0527751 Y2 JP H0527751Y2 JP 1989052574 U JP1989052574 U JP 1989052574U JP 5257489 U JP5257489 U JP 5257489U JP H0527751 Y2 JPH0527751 Y2 JP H0527751Y2
- Authority
- JP
- Japan
- Prior art keywords
- core body
- movable core
- sealing material
- sleeve
- cap
- 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.)
- Expired - Lifetime
Links
- 239000003566 sealing material Substances 0.000 claims description 63
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 238000001994 activation Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical group [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
Landscapes
- Magnetically Actuated Valves (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、核融合装置の高速燃料補給装置（ペ
レツト入射装置）の高速電磁弁に関するものであ
る。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a high-speed solenoid valve for a high-speed refueling device (pellet injection device) for a nuclear fusion device.
（従来の技術）
従来の直動式２ポートタイプの電磁弁を第７図に
より説明すると、１がボデイ、２がシール材、３
が流入ポートに通じる部屋内に上方を向き設けら
れて流出ポートに接続した円筒形弁座、５が同弁
座３に対向して同弁座３の上方に設置したスリー
ブ、６が上記ボデイ１に螺合したナツト、７が同
ナツト６と上記ボデイ１との間に介装したＯリン
グ、８がコア、１０が上記スリーブ５の周りに設
置したコイル、１１が同コイル１０が支持するナ
ツト６側のボンネツト、１６が上記スリーブ５内
に嵌挿した可動鉄心本体で、同可動鉄心本体１６
の下端部に上記シール材２が取付けられている。
また１９が同可動鉄心本体１６を下方に付勢する
ばね、２２が上記コア８を上記ボンネツト１１の
頂部に取付けるナツト、２３が同ナツト２２と上
記ボンネツト１１との間に介装したワツシヤで、
第７図は、電磁弁閉の状態を示しており、この状
態からコイル１０に通電すると、コア８と可動鉄
心本体１６との間に吸引力が発生し、この吸引力
がばね１９の付勢力等よりも大きくなれば、可動
鉄心本体１６及びシール材２がばね１９に抗し上
昇して、可動鉄心本体１６がコア８に当接（衝
突）するとともに、シール材２が弁座３から離れ
て、流入ポートと流出ポートとが連通する。たま
電磁弁開の状態からコイル１０への通電を停止す
ると、コア８と可動鉄心本体１６との間に生じて
いた吸引力が消滅して、可動鉄心本体１６及びシ
ール材２がばね１９の付勢力により下降して、シ
ール材２が弁座３に当接し、流入ポートと流出ポ
ートとの間が遮断されて、電磁弁が閉状態にな
る。(Prior Art) A conventional direct-acting two-port solenoid valve is explained with reference to FIG. 7. 1 is a body, 2 is a sealing material, and 3
5 is a cylindrical valve seat facing upward in a chamber communicating with the inflow port and connected to the outflow port; 5 is a sleeve facing the valve seat 3 and installed above the valve seat 3; 6 is the body 1; 7 is an O-ring interposed between the nut 6 and the body 1, 8 is a core, 10 is a coil installed around the sleeve 5, and 11 is a nut supported by the coil 10. The bonnet on the 6 side, 16 is a movable core body inserted into the sleeve 5, and the movable core body 16 is inserted into the sleeve 5.
The sealing material 2 is attached to the lower end of the housing.
Further, 19 is a spring that urges the movable core body 16 downward, 22 is a nut for attaching the core 8 to the top of the bonnet 11, and 23 is a washer interposed between the nut 22 and the bonnet 11.
FIG. 7 shows a state in which the solenoid valve is closed. When the coil 10 is energized from this state, an attractive force is generated between the core 8 and the movable core body 16, and this attractive force is caused by the biasing force of the spring 19. etc., the movable core body 16 and the sealing material 2 rise against the spring 19, the movable core body 16 contacts (collides with) the core 8, and the sealing material 2 separates from the valve seat 3. The inflow port and outflow port communicate with each other. When the current to the coil 10 is stopped from the open state of the solenoid valve, the attraction force generated between the core 8 and the movable core body 16 disappears, and the movable core body 16 and the sealing material 2 are attached to the spring 19. The sealing material 2 is lowered by the force and comes into contact with the valve seat 3, and the inflow port and outflow port are cut off, and the solenoid valve is closed.
（考案が解決しようとする課題）
前記第７図に示す従来の直動式２ポートタイプ
の電磁弁には、次の問題があつた。(Problems to be Solved by the Invention) The conventional direct acting two-port type solenoid valve shown in FIG. 7 has the following problems.
この電磁弁は、核融合装置の高速燃料補給装置
（ペレツト入射装置）に適用されるものであり、
この電磁弁に要求されるシール性能及び高速でプ
ラズマ中に入射される固体水素の入射速度は、他
の産業用電磁弁に比べて厳しい。この電磁弁は、
可動鉄心本体を急激に駆動することにより発生す
るガス圧の衝撃力を用いる空気銃と同じ原理でプ
ラズマ中に入射される固体水素の入射速度（約
2.3Km／ｓ）を向上させる観点から大きな吸引力
を発生できるコイルを用いているので、可動鉄心
本体１６がコア８に当接（衝突）するときに、同
可動鉄心本体１６及びコア８に摩耗粉が発生し
て、この摩耗粉がシール材２及び弁座３のシール
面に噛む込んで、シール性が悪化する。また可動
鉄心本体１６及びシール材２がばね１９の付勢力
により下降して、シール材２が弁座３に当接する
とき、可動鉄心本体１６の自重がシール材２に加
わり、シール材２が弁座３に衝撃的に接触して、
シール材２が早期に損傷する。また上記のように
シール材２が弁座３に衝撃的に接触するので、シ
ール材２の弁座３に対する接触位置が不安定にな
つて、シール材２と弁座３との間から過大なリー
クが発生するという問題があつた。 This solenoid valve is applied to a high-speed refueling device (pellet injection device) for a nuclear fusion device.
The sealing performance required of this solenoid valve and the injection speed of solid hydrogen that is injected into the plasma at high speed are stricter than other industrial solenoid valves. This solenoid valve is
Using the same principle as an air gun, which uses the impact force of the gas pressure generated by rapidly driving the movable core body, the injection velocity of solid hydrogen into the plasma (approximately
Since a coil that can generate a large attraction force is used to improve speed (2.3 Km/s), when the movable core body 16 contacts (collides with) the core 8, it causes wear to the movable core body 16 and the core 8. Powder is generated, and this abrasion powder gets caught in the sealing surfaces of the sealing material 2 and the valve seat 3, deteriorating the sealing performance. Further, when the movable core body 16 and the sealing material 2 are lowered by the biasing force of the spring 19 and the sealing material 2 comes into contact with the valve seat 3, the weight of the movable core body 16 is applied to the sealing material 2, and the sealing material 2 Shocking contact with seat 3,
The sealing material 2 is damaged early. In addition, as the sealing material 2 contacts the valve seat 3 with an impact as described above, the contact position of the sealing material 2 with respect to the valve seat 3 becomes unstable, and an excessive amount of pressure is generated between the sealing material 2 and the valve seat 3. There was a problem with leaks.
本考案は前記の問題点に鑑み提案するものであ
り、その目的とする処は、摩耗粉のシール材及び
弁座に対する噛み込みを防止できて、シール性を
向上できる。またシール材の弁座への衝撃的な接
触を防止できて、シール材の耐久性を向上でき
る。さらにシール材の弁座に対する接触位置を一
定にできて、シール材と弁座との間に生じていた
リークを防止できる高速電磁弁を提供しようとす
る点にある。 The present invention has been proposed in view of the above-mentioned problems, and its purpose is to prevent wear particles from getting caught in the sealing material and the valve seat, thereby improving sealing performance. In addition, impactful contact of the sealing material with the valve seat can be prevented, and the durability of the sealing material can be improved. Furthermore, it is an object of the present invention to provide a high-speed solenoid valve in which the contact position of the sealing material with respect to the valve seat can be kept constant, thereby preventing leaks that occur between the sealing material and the valve seat.
（課題を解決するための手段）
上記の目的を達成するために、本考案の高速電
磁弁は、流入ポートに通じる部屋内に上方を向き
設けられて流入ポートに接続した円筒形弁座と、
同弁座に対向して同弁座の上方に設置したスリー
ブと、同スリーブ内に摺動自在に嵌挿した可動鉄
心本体と、同可動鉄心本体と上記スリーブとの間
に介装した可動鉄心本体の下方への付勢用外ばね
と、上記可動鉄心本体の内孔に摺動自在に嵌挿し
たばね保持管と、上記円筒形弁座に接触するシー
ル材と、同シール材と上記ばね保持管との間に介
装したシール材の下方への付勢用内ばねと、上記
スリーブの下端部に設けたストツパと、上記可動
鉄心本体の下端部に設けたキヤツプとを有し、同
キヤツプの内周面に上記シール材の下方への移動
を阻止するつば部を設け、同キヤツプの下部に上
記ストツパに当接する当接部を設け、同キヤツプ
の外周面に上記可動鉄心本体の上方への移動を阻
止するクツシヨンリングを設けている。(Means for Solving the Problems) In order to achieve the above object, the high-speed solenoid valve of the present invention includes a cylindrical valve seat facing upward in a chamber communicating with the inflow port and connected to the inflow port;
A sleeve installed above the valve seat facing the valve seat, a movable core body slidably inserted into the sleeve, and a movable core interposed between the movable core body and the sleeve. an outer spring for biasing the main body downward; a spring holding tube slidably fitted into the inner hole of the movable core main body; a sealing material that contacts the cylindrical valve seat; the sealing material and the spring holding tube. It has an internal spring for urging downward a sealing material interposed between the sleeve and the sleeve, a stopper provided at the lower end of the sleeve, and a cap provided at the lower end of the movable core body. A collar part is provided on the inner peripheral surface of the cap to prevent the sealing material from moving downward, a contact part is provided in the lower part of the cap that comes into contact with the stopper, and the outer peripheral surface of the cap is provided with a collar part that prevents the sealing material from moving downward. A cushion ring is provided to prevent movement.
（作用）
本考案の高速電磁弁は前記のように構成されて
おり、外ばねにより、可動鉄心本体が下方に押さ
れて、同可動鉄心本体のキヤツプに設けた当接部
がスリーブの下端部に設けたストツパに当接する
一方、内ばねにより、シール材が下方に押され
て、同シール材が円筒形弁座に弾接している電磁
弁閉の状態から、コイルに通電すると、コアと可
動鉄心本体との間に大きな吸引力が発生し、この
吸引力により、可動鉄心本体の外周面がスリーブ
の内周面に対して摺動しながら、また可動鉄心本
体の内孔面がばね保持管の外周面に対して摺動し
ながら、可動鉄心本体及びキヤツプが上昇を始め
る。この可動鉄心本体の上昇は、外ばねのばね力
に抗して行われる。そして可動鉄心本体及びキヤ
ツプの上昇途中、同キヤツプに設けたつば部が下
方からシール材へ接触して、シール材も内ばねの
ばね力に抗して上昇を始め、上昇終期には、上記
キヤツプに設けたクツシヨンリングがスリーブの
上下中間部に設けた段差部に当接して、可動鉄心
本体及びキヤツプとシール材とが停止する。この
とき、上記吸引力に基づく衝撃が同クツシヨンリ
ングにより緩和される。この状態では、シール材
が円筒形弁座から離れており、流入ポートと流出
ポートとが連通する。(Function) The high-speed solenoid valve of the present invention is constructed as described above, in which the movable core body is pushed downward by the outer spring, and the abutting portion provided on the cap of the movable core body is brought into contact with the lower end of the sleeve. When the coil is energized from the closed state of the solenoid valve, where the inner spring pushes the sealing material downward and the sealing material is in elastic contact with the cylindrical valve seat, the core and movable A large suction force is generated between the movable core body and the movable core body, and this suction force causes the outer peripheral surface of the movable core body to slide against the inner peripheral surface of the sleeve, and also causes the inner hole surface of the movable core body to slide against the spring holding tube. The movable core body and cap begin to rise while sliding against the outer peripheral surface of the movable core. This lifting of the movable core body is performed against the spring force of the outer spring. During the ascent of the movable core body and the cap, the flange provided on the cap comes into contact with the sealing material from below, and the sealing material also begins to rise against the spring force of the inner spring. The cushion ring provided at the sleeve comes into contact with the stepped portion provided at the upper and lower intermediate portions of the sleeve, and the movable core body, the cap, and the sealing material are stopped. At this time, the impact caused by the suction force is alleviated by the cushion ring. In this state, the seal material is separated from the cylindrical valve seat, and the inflow port and outflow port communicate with each other.
またこの電磁弁開の状態から、コイルへの通電
を停止すると、コアと可動鉄心本体との間に発生
していた吸引力が消滅し、外ばねにより、可動鉄
心本体が下方に押されて、同可動鉄心本体の外周
面がスリーブの内周面に対して摺動しながら、ま
た同可動鉄心本体の内孔面がばね保持管の外周面
に対して摺動しながら、可動鉄心本体及びキヤツ
プとシール材とが下降を始め、先ず同シール材が
円筒形弁座に弾接、停止して、流入ポートと流出
ポートとの間が遮断される。それからも可動鉄心
本体及びキヤツプの下降は続き、下降終期には、
同キヤツプに設けた当接部がスリーブの下端部に
設けたストツパに当接して、前記当初の電磁弁閉
の状態に戻る。 When the current to the coil is stopped from the state where the solenoid valve is open, the attraction force generated between the core and the movable core body disappears, and the movable core body is pushed downward by the outer spring. While the outer peripheral surface of the movable core body slides against the inner peripheral surface of the sleeve, and the inner hole surface of the movable core body slides against the outer peripheral surface of the spring holding tube, the movable core body and cap The sealing material begins to descend, and first the sealing material comes into elastic contact with the cylindrical valve seat and stops, thereby blocking the connection between the inflow port and the outflow port. From then on, the movable core body and cap continued to descend, and at the end of the descent,
The contact portion provided on the cap contacts the stopper provided at the lower end of the sleeve, returning the solenoid valve to the original closed state.
（実施例）
次に本考案の高速電磁弁を第１図乃至第４図に
示す一実施例により説明すると、第１，２図の１
がボデイ、２がシール材、３が流入ポートに通じ
る部屋内に上方を向き設けられて流出ポートに接
続した円筒形弁座、第３図の４が可動鉄心で、同
可動鉄心４は、スリーブ５内に摺動自在に嵌挿さ
れた可動鉄心本体１６と、同可動鉄心本体１６の
内孔内に摺動自在に嵌挿された内ばね２０を保持
するばね保持管１８と、同可動鉄心本体１６の下
部に螺合したキヤツプ１５と、同キヤツプ１５に
より保持された合成樹脂等よりなるクツシヨンリ
ング１７とを有している。そして上記キヤツプ１
５につば部（シール材２の下方へ移動を阻止する
つば部）１５′と後記ストツパ２１に当接する当
接部１５″とが設けられ、上記ばね保持管１８に
ガス抜き孔５２，５３が設けられ、上記キヤツプ
１５にガス抜き孔５１が設けられ、上記シール材
２にガス抜き溝５０（第３，４図参照）が設けら
れて、同シール材２が上記可動鉄心本体１６の内
孔下部及び上記キヤツプ１５の内孔に上下方向へ
の移動を可能に嵌挿されている。また第１，２図
の５が上記弁座３に対向して同弁座３の上方に設
置したスリーブ、６が上記ボデイ１に螺合したナ
ツトで、同ナツト６により上記スリーブ５がボデ
イ１に固定されている。また７が同スリーブ５と
上記ボデイ１との間に介装したＯリング、８がコ
ア、９がリングコア、１０が上記スリーブ５の周
りに設置したコイル、１１が同コイル１０を支持
するボンネツト、１２がボンネツトピース、１３
がボルトで、同ボルト１３をスリーブ５の上端部
に設けたねじ孔にねじ込むことにより、ボンネツ
トピース１２とボンネツト１１とコア８とリング
コア８とがスリーブ５に一体的に組付けられてい
る。また１４が上記コイル１０に接続したリード
線、第１，２，３図の１９が上記スリーブ５の内
孔上端部と上記可動鉄心本体１６の上部との間に
介装した外ばね、２０が上記ばね保持管１８の下
部と上記シール材２の上面との間に介装した内ば
ねで、上記外ばね１９が上記可動鉄心本体１６を
下方に付勢し、上記内ばね２０が上記シール材２
を下方に付勢している。また２１が上記キヤツプ
１５の当接部１５″に当接するストツパで、同ス
トツパ２１が上記スリーブ５の下部内面に固定さ
れている。(Embodiment) Next, the high-speed solenoid valve of the present invention will be explained using an embodiment shown in FIGS. 1 to 4.
is a body, 2 is a sealing material, 3 is a cylindrical valve seat facing upward in a chamber leading to an inflow port and connected to an outflow port, 4 in Fig. 3 is a movable iron core, and the movable iron core 4 is a sleeve. 5, a spring holding tube 18 that holds an inner spring 20 that is slidably inserted into an inner hole of the movable core body 16, and a spring holding tube 18 that holds an inner spring 20 that is slidably inserted into the inner hole of the movable core It has a cap 15 screwed onto the lower part of the main body 16, and a cushion ring 17 made of synthetic resin or the like held by the cap 15. And the above cap 1
5 is provided with a flange portion 15' (a flange portion that prevents downward movement of the sealing material 2) and a contact portion 15'' that abuts on a stopper 21 described later, and gas vent holes 52 and 53 are provided in the spring holding tube 18. A gas vent hole 51 is provided in the cap 15, a gas vent groove 50 (see FIGS. 3 and 4) is provided in the seal material 2, and the seal material 2 is provided in the inner hole of the movable core body 16. It is fitted into the lower part and the inner hole of the cap 15 so as to be movable in the vertical direction. In addition, 5 in FIGS. 1 and 2 is a sleeve installed above the valve seat 3 facing the valve seat 3. , 6 is a nut screwed onto the body 1, and the sleeve 5 is fixed to the body 1 by the nut 6. Also, 7 is an O-ring interposed between the sleeve 5 and the body 1; 9 is a core, 9 is a ring core, 10 is a coil installed around the sleeve 5, 11 is a bonnet that supports the coil 10, 12 is a bonnet piece, 13
is a bolt, and the bonnet piece 12, bonnet 11, core 8, and ring core 8 are integrally assembled to the sleeve 5 by screwing the bolt 13 into a screw hole provided at the upper end of the sleeve 5. 14 is a lead wire connected to the coil 10; 19 in FIGS. 1, 2, and 3 is an outer spring interposed between the upper end of the inner hole of the sleeve 5 and the upper part of the movable core body 16; An inner spring is interposed between the lower part of the spring holding tube 18 and the upper surface of the sealing material 2, and the outer spring 19 urges the movable core body 16 downward, and the inner spring 20 pushes the sealing material 2 downward. 2
is biased downward. Further, reference numeral 21 denotes a stopper that comes into contact with the abutting portion 15'' of the cap 15, and the stopper 21 is fixed to the lower inner surface of the sleeve 5.
次に前記第１図乃至第４図に示す高速電磁弁の
作用を具体的に説明する。 Next, the operation of the high-speed solenoid valve shown in FIGS. 1 to 4 will be explained in detail.
第１図は、外ばね１９により、可動鉄心本体１
６が下方に押されて、同可動鉄心本体１６のキヤ
ツプ１５に設けた当接部１５″がスリーブ５の下
端部に設けたストツパ２１に当接する一方、内ば
ね２０により、シール材２が下方に押されて、同
シール材２が円筒形弁座３に弾接している電磁弁
閉の状態を示している。この状態から、コイル１
０に通電すると、コア８と可動鉄心本体１６との
間に大きな吸引力が発生し、この吸引力により、
可動鉄心本体１６の外周面がスリーブ５の内周面
に対して摺動しながら、また可動鉄心本体１６の
内孔面がばね保持管１８の外周面に対して摺動し
ながら、可動鉄心本体１６及びキヤツプ１５が上
昇を始める。この可動鉄心本体１６の上昇は、外
ばね１９のばね力に抗して行われる。そして可動
鉄心本体１６及びキヤツプ１５の上昇途中、同キ
ヤツプ１５に設けたつば部１５′が下方からシー
ル材２へ接触して、シール材２も内ばね２０のば
ね力に抗して上昇を始め、上昇終期には、上記キ
ヤツプ１５に設けた合成樹脂等によりなるクツシ
ヨンリング１７がスリーブ５の上下中間部に設け
た段差部に当接して、可動鉄心本体１６及びキヤ
ツプ１５とシール材２とが停止する。このとき、
上記吸引力に基づく衝撃が同クツシヨンリング１
７により緩和される。この状態では、シール材２
が円筒形弁座３から離れており、流入ポートと流
出ポートとが連通する。 In FIG. 1, the movable core body 1 is
6 is pushed downward, and the abutting portion 15'' provided on the cap 15 of the movable core body 16 abuts against the stopper 21 provided at the lower end of the sleeve 5, while the inner spring 20 causes the sealing material 2 to move downward. The figure shows the closed state of the solenoid valve, where the sealing material 2 is in elastic contact with the cylindrical valve seat 3. From this state, the coil 1
When energized to 0, a large attraction force is generated between the core 8 and the movable core body 16, and this attraction force causes
While the outer peripheral surface of the movable core body 16 slides against the inner peripheral surface of the sleeve 5, and while the inner hole surface of the movable core body 16 slides against the outer peripheral surface of the spring holding tube 18, the movable core body 16 and cap 15 begin to rise. This lifting of the movable core body 16 is performed against the spring force of the outer spring 19. Then, while the movable core body 16 and the cap 15 are rising, the flange 15' provided on the cap 15 contacts the sealing material 2 from below, and the sealing material 2 also begins to rise against the spring force of the inner spring 20. At the end of the ascent, the cushion ring 17 made of synthetic resin or the like provided on the cap 15 comes into contact with the stepped portion provided at the upper and lower intermediate portions of the sleeve 5, and the movable core body 16, the cap 15, and the sealing material 2 are brought into contact with each other. stops. At this time,
The impact based on the above suction force is applied to the cushion ring 1.
7. In this state, the seal material 2
is apart from the cylindrical valve seat 3, and the inflow port and outflow port communicate with each other.
またこの電磁弁開の状態から、コイル１０への
通電を停止すると、コア８と可動鉄心本体１６と
の間に発生していた吸引力が消滅し、外ばね１９
により、可動鉄心本体１６が下方に押されて、同
可動鉄心本体１６の外周面がスリーブ５の内周面
に対して摺動しながら、また同可動鉄心本体１６
の内孔面がばね保持管１８の外周面に対して摺動
しながら、可動鉄心本体１６及びキヤツプ１５と
シール材２とが下降を始め、先ず同シール材２が
円筒形弁座３に弾接、停止して、流入ポートと流
出ポートとの間が遮断される。それからも可動鉄
心本体１６及びキヤツプ１５の下降は続き、下降
終期には、同キヤツプ１５に設けた当接部１５″
がスリーブ５の下端部に設けたストツパ２１に当
接して、前記当初の電磁弁閉の状態に戻る。 Further, when the current to the coil 10 is stopped from the state where the solenoid valve is open, the attractive force generated between the core 8 and the movable core body 16 disappears, and the outer spring 19
As a result, the movable core body 16 is pushed downward, and while the outer circumferential surface of the movable core body 16 slides against the inner circumferential surface of the sleeve 5, the movable core body 16
While the inner hole surface of the spring holding tube 18 slides against the outer peripheral surface of the spring holding tube 18, the movable core body 16, the cap 15, and the sealing material 2 begin to descend, and the sealing material 2 first rebounds against the cylindrical valve seat 3. The inflow port and the outflow port are closed. From then on, the movable core body 16 and the cap 15 continued to descend, and at the end of the descent, the abutting portion 15'' provided on the cap 15
comes into contact with a stopper 21 provided at the lower end of the sleeve 5, returning the solenoid valve to its original closed state.
第５，６図は、後記作動不良に対処した他の実
施例である。即ち、第１図は、本高速電磁弁の全
閉状態を示している。この状態で、コイル１０に
通電すると、コア８と可動鉄心本体１６との間に
吸引力が発生して、第３図に示す可動鉄心４のう
ち、キヤツプ１５と可動鉄心本体１６とクツシヨ
ンリング１７とシール材２とがコア８側に動く。
同可動鉄心本体１６の移動距離は、クツシヨンリ
ング１７とスリーブ５の中間フランジとの間の空
間である。つまり可動鉄心本体１６は、スリーブ
５の中間フランジとクツシヨンリング１７との間
の距離だけコア８側に移動する。このとき、可動
鉄心本体１６の外周面がスリーブ５の内周面を摺
動する。この可動鉄心本体１６の外周面とスリー
ブ５の内周面とは、点或いは面接触しているの
で、可動鉄心４が高速作動を繰り返し行うと、可
動鉄心本体１６の第５図Ａ部（×印参照）にカジ
リが発生して、作動不良を起こす。そこで第５，
６図に示すように可動鉄心本体１６の外周面とキ
ヤツプ１５の外周面とスリーブ５の内周面とに
TiN（窒化チタン）のコーテング層１６ａ，１５
ａ，５ａを施して、作動起こさないようにする。 5 and 6 show other embodiments that deal with the malfunction described later. That is, FIG. 1 shows the present high-speed solenoid valve in a fully closed state. In this state, when the coil 10 is energized, an attractive force is generated between the core 8 and the movable core body 16, and the cap 15, the movable core body 16, and the cushion ring of the movable core 4 shown in FIG. 17 and the sealing material 2 move toward the core 8 side.
The moving distance of the movable core body 16 is the space between the cushion ring 17 and the intermediate flange of the sleeve 5. That is, the movable core body 16 moves toward the core 8 by the distance between the intermediate flange of the sleeve 5 and the cushion ring 17. At this time, the outer peripheral surface of the movable core body 16 slides on the inner peripheral surface of the sleeve 5. Since the outer circumferential surface of the movable core body 16 and the inner circumferential surface of the sleeve 5 are in point or surface contact, when the movable core 4 repeatedly performs high-speed operation, the portion A (×) of the movable core body 16 in FIG. (see mark) may cause galling, causing malfunction. Therefore, the fifth
As shown in FIG. 6, there are
TiN (titanium nitride) coating layers 16a, 15
Apply steps a and 5a to prevent it from operating.
高速電磁弁を全閉から全開までの作動時間0.2
〜0.4×10-3秒で作動させた場合、コーテイング
層を形成していないか、コーテイング層を施して
も硬質クロムメツキのときには、千数百回程度で
作動不良を起こしたが、TiNコーテイング層の
ときには、104回作動した後でも作動不良を起こ
さなかつた。 Operating time for high-speed solenoid valve from fully closed to fully open: 0.2
When activated for ~0.4×10 -3 seconds, malfunctions occurred after approximately 1,000 or so operations when no coating layer was formed or when hard chrome plating was applied even if a coating layer was applied. In some cases, it did not malfunction even after 104 activations.
（考案の効果）
本考案の高速電磁弁は前記のように外ばねによ
り、可動鉄心本体が下方に押されて、同可動鉄心
本体のキヤツプに設けた当接部がスリーブの下端
部に設けたストツパに当接する一方、内ばねによ
り、シール材が下方に押されて、同シール材が円
筒形弁座に弾接している電磁弁閉の状態から、コ
イルに通電すると、コアと可動鉄心本体との間に
大きな吸引力が発生し、この吸引力により、可動
鉄心本体の外周面がスリーブの内周面に対して摺
動しながら、また可動鉄心本体の内孔面がばね保
持管の外周面に対して摺動しながら、可動鉄心本
体及びキヤツプが上昇を始める。この可動鉄心本
体の上昇は、外ばねのばね力に抗して行われる。
そして可動鉄心本体及びキヤツプの上昇途中、同
キヤツプに設けたつば部が下方からシール材へ接
触して、シール材も内ばねのばね力に抗して上昇
を始め、上昇終期には、上記キヤツプに設けたク
ツシヨンリングがスリーブの上下中間部に設けた
段差部に当接して、可動鉄心本体及びキヤツプと
シール材とが停止する。このとき、上記吸引力に
基づく衝撃が同クツシヨンリングにより緩和され
るので、上記のように可動鉄心本体が外ばねのば
ね力に抗して上昇する点と相挨つて可動鉄心本体
がコア側の部材に衝突するこがなくて、摩耗粉が
発生せず、摩耗粉のシール材及び弁座に対する噛
み込みを防止できて、シール性を向上できる。(Effect of the invention) As mentioned above, in the high-speed solenoid valve of the invention, the movable core body is pushed downward by the outer spring, and the abutting part provided on the cap of the movable core body is provided at the lower end of the sleeve. While in contact with the stopper, the sealing material is pushed downward by the inner spring, and when the coil is energized from the closed state of the solenoid valve, where the sealing material is in elastic contact with the cylindrical valve seat, the core and the movable core body are connected. A large suction force is generated between them, and this suction force causes the outer peripheral surface of the movable core body to slide against the inner peripheral surface of the sleeve, and also causes the inner hole surface of the movable core body to slide against the outer peripheral surface of the spring holding tube. The movable core body and cap begin to rise while sliding against each other. This lifting of the movable core body is performed against the spring force of the outer spring.
During the ascent of the movable core body and the cap, the flange provided on the cap comes into contact with the sealing material from below, and the sealing material also begins to rise against the spring force of the inner spring. The cushion ring provided at the sleeve comes into contact with the stepped portion provided at the upper and lower intermediate portions of the sleeve, and the movable core body, the cap, and the sealing material are stopped. At this time, the impact based on the above-mentioned suction force is alleviated by the cushion ring, so that the movable core body rises against the spring force of the outer spring as described above, and the movable core body moves toward the core side. There is no collision with other members, no abrasion powder is generated, and abrasion powder can be prevented from getting caught in the sealing material and the valve seat, improving sealing performance.
またこの電磁弁開の状態から、コイルへの通電
を停止すると、コアと可動鉄心本体との間に発生
していた吸引力が消滅し、外ばねにより、可動鉄
心本体が下方に押されて、同可動鉄心本体の外周
面がスリーブの内周面に対して摺動しながら、ま
た同可動鉄心本体の内孔面がばね保持管の外周面
に対して摺動しながら、可動鉄心本体及びキヤツ
プとシール材とが下降し、同シール材が円筒形弁
座に弾接して、停止するので、シール材の弁座へ
の衝撃的な接触を防止できて、シール材の耐久性
を向上できる。 When the current to the coil is stopped from the state where the solenoid valve is open, the attraction force generated between the core and the movable core body disappears, and the movable core body is pushed downward by the outer spring. While the outer peripheral surface of the movable core body slides against the inner peripheral surface of the sleeve, and the inner hole surface of the movable core body slides against the outer peripheral surface of the spring holding tube, the movable core body and cap Since the sealing material and the sealing material descend and come into elastic contact with the cylindrical valve seat and stop, impactful contact of the sealing material with the valve seat can be prevented and the durability of the sealing material can be improved.
また可動鉄心本体をスリーブ内に摺動自在に嵌
挿し、ばね保持管を可動鉄心本体の内孔内に摺動
自在に嵌挿し、同ばね保持管とシール材との間に
シール材の下方への付勢用内ばねを介装して、同
内ばねを同ばね保持管により保持したので、シー
ル材を円筒形弁座の定まつた位置に弾接できて、
シール材と弁座との間に生じていたリークを防止
できる効果がある。 In addition, the movable core body is slidably inserted into the sleeve, the spring holding tube is slidably inserted into the inner hole of the movable core body, and the spring holding tube is inserted between the spring holding tube and the sealing material below the sealing material. Since a biasing internal spring is inserted and the internal spring is held by the spring holding tube, the sealing material can be brought into elastic contact with the fixed position of the cylindrical valve seat.
This has the effect of preventing leaks that occur between the sealing material and the valve seat.
第１図は本考案に係わる高速電磁弁の一実施例
の閉状態を示す縦断側面図、第２図は同電磁弁の
開状態を示す縦断側面図、第３図は可動鉄心本体
を拡大して示す縦断側面図、第４図はシール材の
平面図、第５図は他の実施例の可動鉄心本体を示
す縦断側面図、第６図は同実施例のスリーブを示
す縦断側面図、第７図はは従来の直動式２ポート
タイプの電磁弁を示す縦断側面図である。
２……シール材、３……円筒形弁座、５……ス
リーブ、１５……キヤツプ、１５′……つば部、
１５″……当接部、１６……可動鉄心本体、１７
……クツシヨンリング、１８……ばね保持管、１
９……外ばね、２０……内ばね、２１……ストツ
パ。
Fig. 1 is a longitudinal side view showing an embodiment of the high-speed solenoid valve according to the present invention in the closed state, Fig. 2 is a longitudinal side view showing the solenoid valve in the open state, and Fig. 3 is an enlarged view of the movable core body. 4 is a plan view of the sealing material, FIG. 5 is a vertical side view showing the movable core body of another embodiment, and FIG. 6 is a longitudinal side view showing the sleeve of the same embodiment. FIG. 7 is a longitudinal sectional side view showing a conventional direct-acting two-port type solenoid valve. 2...Sealing material, 3...Cylindrical valve seat, 5...Sleeve, 15...Cap, 15'...Brim part,
15″...Abutment part, 16...Movable core body, 17
...Cushion ring, 18...Spring holding tube, 1
9...outer spring, 20...inner spring, 21...stopper.
Claims (1)
れて流出ポートに接続した円筒形弁座と、同弁座
に対向して同弁座の上方に設置したスリーブと、
同スリーブ内に摺動自在に嵌挿した可動鉄心本体
と、同可動鉄心本体と上記スリーブとの間に介装
した可動鉄心本体の下方への付勢用外ばねと、上
記可動鉄心本体の内孔に摺動自在に嵌挿したばね
保持管と、上記円筒形弁座に接触するシール材
と、同シール材と上記ばね保持管との間に介装し
たシール材の下方への付勢用内ばねと、上記スリ
ーブの下端部に設けたストツパと、上記可動鉄心
本体の下端部に設けたキヤツプとを有し、同キヤ
ツプの内周面に上記シール材の下方への移動を阻
止するつば部を設け、同キヤツプの下部に上記ス
トツパに当接する当接部を設け、同キヤツプの外
周面に上記可動鉄心本体の上方への移動を阻止す
るクツシヨンリングを設けたことを特徴とする高
速電磁弁。 a cylindrical valve seat facing upward in a chamber communicating with the inflow port and connected to the outflow port; a sleeve opposite to and disposed above the valve seat;
A movable core body is slidably inserted into the sleeve, an outer spring for biasing the movable core body downward is interposed between the movable core body and the sleeve, and an inner spring of the movable core body is inserted between the movable core body and the sleeve. A spring retaining tube that is slidably inserted into the hole, a sealing material that contacts the cylindrical valve seat, and an internal structure that urges the sealing material downward between the sealing material and the spring retaining tube. The cap has a spring, a stopper provided at the lower end of the sleeve, and a cap provided at the lower end of the movable core body, and a collar portion on the inner peripheral surface of the cap that prevents the seal material from moving downward. A high-speed electromagnetic device characterized in that a contact portion for contacting the stopper is provided at the lower part of the cap, and a cushion ring for preventing upward movement of the movable iron core body is provided on the outer peripheral surface of the cap. valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989052574U JPH0527751Y2 (en) | 1989-05-09 | 1989-05-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989052574U JPH0527751Y2 (en) | 1989-05-09 | 1989-05-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02143580U JPH02143580U (en) | 1990-12-05 |
| JPH0527751Y2 true JPH0527751Y2 (en) | 1993-07-15 |
Family
ID=31572988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989052574U Expired - Lifetime JPH0527751Y2 (en) | 1989-05-09 | 1989-05-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0527751Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2706617B2 (en) * | 1994-02-07 | 1998-01-28 | シーケーディ株式会社 | solenoid valve |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5844575B2 (en) * | 1975-08-25 | 1983-10-04 | 株式会社リコー | Kiyushi Souchi |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5844575U (en) * | 1981-09-18 | 1983-03-25 | 株式会社松井製作所 | electromagnetic device |
| JPH038845Y2 (en) * | 1984-11-14 | 1991-03-05 |
-
1989
- 1989-05-09 JP JP1989052574U patent/JPH0527751Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5844575B2 (en) * | 1975-08-25 | 1983-10-04 | 株式会社リコー | Kiyushi Souchi |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02143580U (en) | 1990-12-05 |
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