JPS6217665Y2 - - Google Patents
Info
- Publication number
- JPS6217665Y2 JPS6217665Y2 JP1981042363U JP4236381U JPS6217665Y2 JP S6217665 Y2 JPS6217665 Y2 JP S6217665Y2 JP 1981042363 U JP1981042363 U JP 1981042363U JP 4236381 U JP4236381 U JP 4236381U JP S6217665 Y2 JPS6217665 Y2 JP S6217665Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic attraction
- valve
- attraction piece
- return rod
- yoke
- 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
Links
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 238000013459 approach Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Landscapes
- Lift Valve (AREA)
- 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、永久磁石と、信号電流の供給時に該
永久磁石とは逆極性に励磁される電磁石とから成
る電磁装置を用いた電磁式ガス遮断弁に関するも
のである。[Detailed Description of the Invention] (Industrial Application Field) The present invention provides an electromagnetic gas using an electromagnetic device consisting of a permanent magnet and an electromagnet that is excited with a polarity opposite to that of the permanent magnet when a signal current is supplied. This relates to a shutoff valve.
（従来の技術）
従来の電磁式ガス遮断弁では、実公昭55−
35508号公報に示されているように、平常時には
永久磁石の磁気吸引力によつて磁気吸着片を電磁
装置のヨークに吸着保持する一方、非常時には電
磁石への通電によつて磁気吸着片を釈放し、弁体
をバネ付勢によつて閉弁位置へ駆動するようにな
つているが、ここで問題となるのは、磁気吸着片
がヨークの全面に密着するかどうかである。(Conventional technology) Conventional electromagnetic gas cutoff valves
As shown in Publication No. 35508, during normal times, the magnetic attraction piece is attracted and held on the yoke of the electromagnetic device by the magnetic attraction force of the permanent magnet, but in an emergency, the magnetic attraction piece is released by energizing the electromagnet. However, the valve body is driven to the valve closing position by spring bias, but the problem here is whether the magnetic attraction piece will come into close contact with the entire surface of the yoke.
磁気吸着片がヨークに対して密着せず、傾斜し
て吸着されると、磁気吸着片に働く磁気吸引力は
密着時と比べて小さくなり、これが一定限界より
減少したときには、所定の信号電流が到来しない
のにも拘らず、磁気吸着片が閉弁用バネの働きに
よつてヨークより釈放され、閉弁作動してしまう
ことになる。 If the magnetic attraction piece does not come into close contact with the yoke and is attracted at an angle, the magnetic attraction force acting on the magnetic attraction piece will be smaller than when it is in close contact with the yoke, and when this decreases below a certain limit, the predetermined signal current will change. Even though the valve does not arrive, the magnetic attraction piece is released from the yoke by the action of the valve-closing spring, and the valve closes.
（考案が解決しようとする問題点）
ところで、前記実公昭55−35508号公報の電磁
式ガス遮断弁では、磁気吸着片の中央に垂直な復
帰ロツドが一体に突設され、ヨークの下端吸着面
の中央部に設けた垂直案内孔に前記復帰ロツドを
摺動可能に挿通している。(Problems to be Solved by the Invention) By the way, in the electromagnetic gas cutoff valve of Utility Model Publication No. 55-35508, a vertical return rod is integrally provided in the center of the magnetic attraction piece, and the lower end of the yoke attracts the attraction surface. The return rod is slidably inserted into a vertical guide hole provided in the center of the rod.
この構造において磁気吸着片とヨークの全面密
着を達成するには、復帰ロツドが該垂直案内孔に
軸心を合致して挿通されること、該垂直案内孔と
ヨークの下端吸着面とが完全に直角になつている
こと、また、復帰ロツドと磁気吸着片とが完全に
直角になつていることが必要であるが、これらを
全て達成するには、復帰ロツドやヨーク、磁気吸
着片の成形加工と組立がいずれも非常に高い精度
に行なわれる必要がある。 In order to achieve complete contact between the magnetic attraction piece and the yoke in this structure, the return rod must be inserted into the vertical guide hole with its axis aligned, and the vertical guide hole and the lower end attraction surface of the yoke must be completely aligned. It is necessary for the return rod to be at a right angle, and for the return rod and the magnetic attraction piece to be at a perfect right angle.To achieve all of these, it is necessary to mold the return rod, yoke, and magnetic attraction piece. Both assembly and assembly must be performed with extremely high precision.
しかしながら、このように成形加工や組立に高
精度を要求すると、製品の歩留りが悪くなり、不
良品発生率の増大は製品コストの低減を妨げるこ
とになる。 However, if such high precision is required for molding and assembly, the yield of products will be poor, and the increase in the incidence of defective products will impede reductions in product costs.
従つて本考案の目的は、磁気吸着片とヨークと
を完全密着させる自己調整機能を備えているた
め、成形加工や組立等に特に高い精度を必要とせ
ず、製品コストの低減が容易であると共に、開弁
時に十分な吸引力が働くので信頼性に優れた電磁
式ガス遮断弁を提供することである。 Therefore, the purpose of the present invention is to provide a self-adjusting function that brings the magnetic adsorption piece and the yoke into perfect contact, so there is no need for particularly high precision in molding or assembly, and it is easy to reduce product costs. An object of the present invention is to provide an electromagnetic gas cutoff valve that has excellent reliability because a sufficient suction force is applied when the valve is opened.
（問題点を解決するための手段）
以下、添付図面の参照符号を用いて説明する
と、本考案の電磁式ガス遮断弁は、永久磁石１と
信号電流の供給によつて該永久磁石１とは逆極性
に励磁される電磁石２より成る電磁装置３と、該
電磁装置３の下方に配置され、電磁装置３のヨー
ク４に吸着される磁気吸着片５と、該磁気吸着片
５がヨーク４から釈放されたとき閉弁位置に下降
駆動される弁体６と、該弁体６を閉弁方向に押下
げ付勢するバネ７と、該磁気吸着片５と別体に構
成され、電磁装置３の中央部の垂直案内孔に摺動
可能に嵌挿された復帰ロツド８とから成り、電磁
装置３の下方に突出した該復帰ロツド８の下端部
と磁気吸着片５の中央部との連結が、磁気吸着片
５を復帰ロツド８の下端部を中心として360度の
全方向に回動可能にする自在継手９ａ，９ｂによ
つて行われたものである。(Means for Solving the Problems) The electromagnetic gas cutoff valve of the present invention will be explained below using the reference numerals of the attached drawings. An electromagnetic device 3 consisting of an electromagnet 2 that is excited with opposite polarity, a magnetic attraction piece 5 that is placed below the electromagnetic device 3 and is attracted to the yoke 4 of the electromagnetic device 3, and a magnetic attraction piece 5 that is attached to the yoke 4 from the yoke 4. The electromagnetic device 3 is composed of a valve body 6 that is driven downward to the valve closing position when released, a spring 7 that pushes down the valve body 6 in the valve closing direction, and a spring 7 that biases the valve body 6 downward in the valve closing direction. A return rod 8 is slidably inserted into a vertical guide hole in the center of the electromagnetic device 3. This is achieved by universal joints 9a and 9b which allow the magnetic attraction piece 5 to rotate in all directions of 360 degrees around the lower end of the return rod 8.
（作 用）
ガス漏れ警報器や震動感知器より信号電流が電
磁石２に供給されると、磁気吸着片５が電磁装置
３のヨーク４から釈放され、磁気吸着片５と弁体
６はバネ７の押下げ付勢によつて下方向に駆動さ
れ、瞬時に閉弁する。(Function) When a signal current is supplied to the electromagnet 2 from a gas leak alarm or a vibration sensor, the magnetic attraction piece 5 is released from the yoke 4 of the electromagnetic device 3, and the magnetic attraction piece 5 and the valve body 6 are connected to the spring 7. The valve is driven downward by the push-down bias of the valve, and the valve closes instantly.
ガス漏れ処置や地震後の点検処置の終了後、復
帰ロツド８を引上げたとき、復帰ロツド８に連結
された磁気吸着片５と弁体６は、復帰ロツド８と
一体に所定高さに引上げられ、再び開弁させられ
る。 When the return rod 8 is pulled up after gas leakage treatment or post-earthquake inspection procedures are completed, the magnetic adsorption piece 5 and valve body 6 connected to the return rod 8 are pulled up to a predetermined height together with the return rod 8. , the valve is opened again.
この復帰操作の時点では、電磁石２への通電は
行われていないから、磁気吸着片５がヨーク４に
一定距離まで接近したとき、磁気吸着片５は永久
磁石１の磁気吸引力によつてヨーク４の下端吸着
面に吸着される。 At the time of this return operation, the electromagnet 2 is not energized, so when the magnetic attraction piece 5 approaches the yoke 4 to a certain distance, the magnetic attraction piece 5 is attracted to the yoke by the magnetic attraction force of the permanent magnet 1. It is attracted to the lower end attraction surface of 4.
このように磁気吸着片５がヨーク４に下方から
接近したとき、例えば磁気吸着片５がヨーク４の
下端吸着面に対し傾斜していたときには、磁気吸
着片５はヨーク４の下端吸着面との間の間隙を消
失させる方向に、復帰ロツド８の下端部の自在継
手を中心に回動して自らの姿勢を調整変更する。
かくして、磁気吸着片５がヨーク４の下端吸着面
の全面に密着し、弁体６は充分な磁気吸引力によ
つて開弁位置に保持される。 When the magnetic attraction piece 5 approaches the yoke 4 from below in this way, for example, when the magnetic attraction piece 5 is inclined with respect to the lower end attraction surface of the yoke 4, the magnetic attraction piece 5 approaches the lower end attraction surface of the yoke 4. The return rod 8 adjusts and changes its own posture by rotating around the universal joint at the lower end in a direction that eliminates the gap between the two.
Thus, the magnetic attraction piece 5 comes into close contact with the entire surface of the lower end attraction surface of the yoke 4, and the valve body 6 is held in the valve open position by a sufficient magnetic attraction force.
（実施例）
図示の実施例では、復帰ロツド８はヨーク４の
中央部の垂直案内孔１０に挿通され、その上端突
出部には引上げ操作用摘み１１をビスで固着して
ある。弁本体１２にビスで固着された電磁装置の
ハウジング１３には、円筒形の電磁装置３が収容
され、該電磁装置３はハウジング１３の上壁部１
５にビス１４で固着されている。該ハウジング１
３の上端部にはカバー２３が取外し自在に装着さ
れている。(Embodiment) In the illustrated embodiment, the return rod 8 is inserted into a vertical guide hole 10 in the center of the yoke 4, and a pull-up operation knob 11 is fixed to the upper end of the return rod 8 with a screw. A cylindrical electromagnetic device 3 is housed in an electromagnetic device housing 13 fixed to the valve body 12 with screws, and the electromagnetic device 3 is attached to the upper wall 1 of the housing 13.
5 with screws 14. The housing 1
A cover 23 is removably attached to the upper end of 3.
弁体６はダイヤフラム１６の中央肉厚部によつ
て構成され、ダイヤフラム１６とダイヤフラム受
板１７間にクツシヨンゴム２４を介在させてある
ため、弁口２１に当接した閉弁時の気密効果が完
全であると共に、開弁時の流過抵抗が小さくなつ
ている。ダイヤフラム受板１７は磁気吸着片５の
下面にビス１８で固着されている。磁気吸着片５
上面肩部１９と前記ハウジング１３の内周段面２
０間には、圧縮コイルバネより成る閉弁付勢用バ
ネ７が装着されている。 The valve body 6 is constituted by the central thick part of the diaphragm 16, and a cushion rubber 24 is interposed between the diaphragm 16 and the diaphragm receiving plate 17, so that when the valve is in contact with the valve port 21 and the valve is closed, the airtight effect is completely achieved. At the same time, the flow resistance when the valve is opened is reduced. The diaphragm receiving plate 17 is fixed to the lower surface of the magnetic attraction piece 5 with screws 18. Magnetic adsorption piece 5
Upper surface shoulder portion 19 and inner circumferential step surface 2 of the housing 13
A valve closing biasing spring 7 made of a compression coil spring is attached between the valves 0 and 0.
磁気吸着片５の中央部には下面側に開いた略半
球状の凹部９ａが形成され、この凹部９ａに挿入
された復帰ロツド８の下端部の外周面には、Ｏ−
リング又はＣ−リングより成る抜止めリング９ｂ
を嵌着する環状溝を設けてあり、復帰ロツド８の
下端部は該抜止めリング９ｂによつて凹部９ａか
らの抜脱を阻止されている。 A substantially hemispherical recess 9a that opens downward is formed in the center of the magnetic attraction piece 5, and the lower end of the return rod 8 inserted into the recess 9a has an O-
Retaining ring 9b made of a ring or C-ring
The lower end of the return rod 8 is prevented from coming out of the recess 9a by the retaining ring 9b.
復帰ロツド８の下端部の先端面とダイヤフラム
受板１７の上面との間、復帰ロツド８の下端部の
外周面と凹部９ａの内面とに間には、充分な空間
が確保されているため、磁気吸着片５は復帰ロツ
ド８の下端部を中心として360度の全方向に回動
可能となつている。即ち、抜止めリング９ｂと凹
部９ａは自在継手を構成している。 Sufficient space is ensured between the tip of the lower end of the return rod 8 and the upper surface of the diaphragm receiving plate 17, and between the outer peripheral surface of the lower end of the return rod 8 and the inner surface of the recess 9a. The magnetic attraction piece 5 is rotatable in all directions of 360 degrees around the lower end of the return rod 8. That is, the retaining ring 9b and the recess 9a constitute a universal joint.
尚、本考案は種々の態様で実施できるものであ
り、磁気吸着片５と復帰ロツド８の自在継手とし
ては、第２図に示したように復帰ロツド８の下端
部に球状突起９ｃを設け、該球状突起９ｃを前記
凹部９ａに遊嵌させてもよい。 The present invention can be implemented in various ways, and as a universal joint between the magnetic attraction piece 5 and the return rod 8, a spherical protrusion 9c is provided at the lower end of the return rod 8 as shown in FIG. The spherical projection 9c may be loosely fitted into the recess 9a.
（考案の効果）
以上のように本考案の電磁式ガス遮断弁では、
磁気吸着片５と復帰ロツド８が別体に構成され、
電磁装置３の下方に突出した復帰ロツド８の下端
部と磁気吸着片５の中央部との連結が、磁気吸着
片５を復帰ロツド８の下端部を中心として360度
の全方向に回動可能にする自在継手によつて行わ
れているため、復帰ロツド８がヨーク４側の垂直
案内孔１０やハウジング１３側の垂直案内孔２２
の軸心に対してずれて配置され、復帰ロツド８に
対してヨーク４の下端吸着面が直角に配置されて
いなくとも、磁気吸着片５は永久磁石１の磁気吸
引力の作用領域に入つたとき、復帰ロツド８の下
端部を中心に適宜傾斜回動してその姿勢位置を自
ら調整し、ヨークの下端吸着面の全面に磁気吸着
片５が完全に密着する。(Effects of the invention) As described above, the electromagnetic gas cutoff valve of the invention has
The magnetic adsorption piece 5 and the return rod 8 are constructed separately,
The connection between the lower end of the return rod 8 protruding downwards of the electromagnetic device 3 and the center of the magnetic attraction piece 5 allows the magnetic attraction piece 5 to rotate in all directions of 360 degrees around the lower end of the return rod 8. Since this is done by a universal joint, the return rod 8 can be inserted into the vertical guide hole 10 on the yoke 4 side or the vertical guide hole 22 on the housing 13 side.
Even if the lower end attraction surface of the yoke 4 is not arranged at right angles to the return rod 8, the magnetic attraction piece 5 enters the area of action of the magnetic attraction force of the permanent magnet 1. At this time, the return rod 8 tilts and rotates around the lower end of the yoke to adjust its posture and position, so that the magnetic attraction piece 5 is completely in close contact with the entire surface of the lower end attraction surface of the yoke.
このように本考案のガス遮断弁では、磁気吸着
片５をヨーク４の下端吸着面に完全密着させる磁
気吸着片の姿勢自動調整機能を備えているため、
復帰ロツドやヨーク、磁気吸着片等の成形加工や
組立に特に高い精度を必要とせず、不良品発生率
の減少によつて製品コストの相当な低減が可能で
ある。 As described above, the gas cutoff valve of the present invention has an automatic attitude adjustment function of the magnetic attraction piece that brings the magnetic attraction piece 5 into complete contact with the lower end attraction surface of the yoke 4.
Particularly high precision is not required in the molding and assembly of return rods, yokes, magnetic attraction pieces, etc., and product costs can be considerably reduced by reducing the incidence of defective products.
また、ヨーク４の下端吸着面と磁気吸着片５と
の完全密着によつて、磁気吸着片５には永久磁石
１の磁気吸引力が充分に働くので、吸引力不足を
招くことがない。そのため、磁気吸着片５は開弁
位置に的確に保持されることになり、電磁石２へ
の信号電流が到来しないのにも拘らず、磁気吸着
片５と弁体６が閉弁位置へと誤作動してしまうこ
とがなく、作動の信頼性に優れた電磁式ガス遮断
弁が提供できる。 Furthermore, due to the complete contact between the lower end attraction surface of the yoke 4 and the magnetic attraction piece 5, the magnetic attraction force of the permanent magnet 1 acts sufficiently on the magnetic attraction piece 5, so that there is no shortage of attraction force. Therefore, the magnetic attraction piece 5 is accurately held in the valve open position, and even though the signal current to the electromagnet 2 does not arrive, the magnetic attraction piece 5 and the valve body 6 are erroneously moved to the valve closing position. It is possible to provide an electromagnetic gas cutoff valve that does not operate and has excellent operational reliability.
図面は本考案の一実施例に係る電磁式ガス遮断
弁を示し、第１図は該ガス遮断弁の開弁状態の縦
断面図、第２図は本考案の別の実施例における磁
気吸着片と復帰ロツド間の自在継手部分を示す縦
断面図である。
１……永久磁石、２……電磁石、３……電磁装
置、４……ヨーク、５……磁気吸着片、６……弁
体、７……閉弁用バネ、８……復帰ロツド、９ａ
……自在継手の一部を構成する凹部、９ｂ……自
在継手の一部を構成する抜止めリング、９ｃ……
自在継手の一部を構成する球状突起、１０，２２
……復帰ロツドの垂直案内孔、１２……弁本体、
１３……ハウジング、１６……ダイヤフラム、２
１……弁口。
The drawings show an electromagnetic gas cutoff valve according to an embodiment of the present invention, FIG. 1 is a longitudinal cross-sectional view of the gas cutoff valve in an open state, and FIG. 2 is a magnetic adsorption piece in another embodiment of the present invention. FIG. 4 is a longitudinal cross-sectional view showing a universal joint portion between the return rod and the return rod. DESCRIPTION OF SYMBOLS 1... Permanent magnet, 2... Electromagnet, 3... Electromagnetic device, 4... Yoke, 5... Magnetic adsorption piece, 6... Valve body, 7... Valve closing spring, 8... Return rod, 9a
...A recess that forms part of the universal joint, 9b...A retaining ring that forms part of the universal joint, 9c...
Spherical protrusion forming part of universal joint, 10, 22
... Vertical guide hole of return rod, 12 ... Valve body,
13...Housing, 16...Diaphragm, 2
1... Oral mouth.
Claims (1)
石１とは逆極性に励磁される電磁石２より成る電
磁装置３と、該電磁装置３の下方に配置され、電
磁装置３のヨーク４に吸着される磁気吸着片５
と、該磁気吸着片５がヨーク４から釈放されたと
き閉弁位置に下降駆動される弁体６と、該弁体６
を閉弁方向に押下げ付勢するバネ７と、該磁気吸
着片５と別体に構成され、電磁装置３の中央部の
垂直案内孔に摺動可能に嵌挿された復帰ロツド８
とから成り、電磁装置３の下方に突出した復帰ロ
ツド８の下端部と磁気吸着片５の中央部との連結
が、磁気吸着片５を復帰ロツド８の下端部を中心
として360度の全方向に回動可能にする自在継手
９ａ，９ｂによつて行われた電磁式ガス遮断弁。 an electromagnetic device 3 consisting of a permanent magnet 1 and an electromagnet 2 that is excited to have a polarity opposite to that of the permanent magnet 1 by supplying a signal current; magnetic adsorption piece 5
, a valve body 6 that is driven downward to the valve closing position when the magnetic attraction piece 5 is released from the yoke 4;
a spring 7 that presses down in the valve-closing direction; and a return rod 8 that is configured separately from the magnetic attraction piece 5 and is slidably inserted into a vertical guide hole in the center of the electromagnetic device 3.
The connection between the lower end of the return rod 8 protruding downward from the electromagnetic device 3 and the center of the magnetic attraction piece 5 moves the magnetic attraction piece 5 in all directions of 360 degrees around the lower end of the return rod 8. An electromagnetic gas cutoff valve provided by universal joints 9a and 9b that can be rotated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981042363U JPS6217665Y2 (en) | 1981-03-27 | 1981-03-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981042363U JPS6217665Y2 (en) | 1981-03-27 | 1981-03-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57155372U JPS57155372U (en) | 1982-09-29 |
| JPS6217665Y2 true JPS6217665Y2 (en) | 1987-05-07 |
Family
ID=29839392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981042363U Expired JPS6217665Y2 (en) | 1981-03-27 | 1981-03-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6217665Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5615875B2 (en) * | 1977-04-11 | 1981-04-13 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5615875U (en) * | 1979-07-16 | 1981-02-10 |
-
1981
- 1981-03-27 JP JP1981042363U patent/JPS6217665Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5615875B2 (en) * | 1977-04-11 | 1981-04-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57155372U (en) | 1982-09-29 |
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