JP3016056B2 - Air gap adjustment method for normally closed solenoid valve and air gap and valve stroke adjustment method for normally open solenoid valve - Google Patents
Air gap adjustment method for normally closed solenoid valve and air gap and valve stroke adjustment method for normally open solenoid valveInfo
- Publication number
- JP3016056B2 JP3016056B2 JP5173277A JP17327793A JP3016056B2 JP 3016056 B2 JP3016056 B2 JP 3016056B2 JP 5173277 A JP5173277 A JP 5173277A JP 17327793 A JP17327793 A JP 17327793A JP 3016056 B2 JP3016056 B2 JP 3016056B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve seat
- bearing plate
- distance
- fixed core
- 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 - Fee Related
Links
Landscapes
- Magnetically Actuated Valves (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、電磁弁の固定コア及び
可動コア間に形成されるエアギャップの調整方法と、電
磁弁の弁体の先端及び弁座の先端間に形成されるバルブ
ストロークの調整方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of adjusting an air gap formed between a fixed core and a movable core of a solenoid valve, and a valve stroke formed between a tip of a valve body and a tip of a valve seat of the solenoid valve. The adjustment method.
【0002】[0002]
【従来の技術】電磁弁の組立時に、固定コアと可動コア
間及び可動コアとストッパ間にそれぞれ所定厚さの仮ス
ペーサを介装することにより、組立完了時に固定コアと
可動コア間に所望のエアギャップが形成されるようにし
た電磁弁のエアギャップ調整方法が、特開平5−184
73号公報により公知である。2. Description of the Related Art At the time of assembling a solenoid valve, temporary spacers each having a predetermined thickness are interposed between a fixed core and a movable core and between a movable core and a stopper. An air gap adjusting method for a solenoid valve in which an air gap is formed is disclosed in Japanese Patent Application Laid-Open No. 5-184.
No. 73 discloses this.
【0003】[0003]
【発明が解決しようとする課題】しかしながら上記従来
の方法は、組立時に仮スペーサの取付け及び取外しを行
う必要があるため、工数が増えて組立作業が面倒になる
問題がある。However, in the above-mentioned conventional method, it is necessary to attach and remove the temporary spacer at the time of assembling, so that there is a problem that the number of steps is increased and the assembling work is complicated.
【0004】本発明は、かゝる事情に鑑みてなされたも
ので、電磁弁のエアギャップ及びバルブストロークを、
仮スペーサを用いることなく適切な大きさに調整するこ
とを目的とする。The present invention has been made in view of such circumstances, and has been made to reduce the air gap and valve stroke of a solenoid valve.
An object is to adjust the size to an appropriate size without using a temporary spacer.
【0005】[0005]
【課題を解決するための手段】上記目的を達成するため
に、請求項1に記載された発明は、ハウジング本体、コ
イル、固定コア、ヨーク体及び弁座支持部材からなるハ
ウジングと、固定コア及び弁座支持部材間に移動自在に
配設されてコイルの励磁により固定コアに吸引される可
動コアと、可動コアを固定コアから離間する方向に付勢
する弾発付勢手段と、弁座支持部材に設けた弁座に着座
可能な弁体を有して可動コアに連設された弁杆と、ヨー
ク体及び弁座支持部材間に挟持されて弁杆の外周部を摺
動自在に案内する軸受板とを備えてなる常閉型電磁弁に
おいて、弁体が弁座に着座しているときに固定コア及び
可動コアの対向部に形成されるエアギャップを所定の大
きさに調整すべく、前記軸受板の厚さを決定するエアギ
ャップ調整方法であって、可動コアを固定コアに圧接し
た状態で軸受板の一端面が当接するヨーク体の第1基準
面と弁体の先端との間の第1の距離を測定する第1の工
程と、軸受板の他端面が当接する弁座支持部材の第2基
準面と弁座の先端との間の第2の距離を測定する第2の
工程と、前記第1、第2の距離及び前記エアギャップに
基づいて軸受板の厚さを決定し、その決定された厚さの
軸受板をヨーク体及び弁座支持部材間に正しくセットす
ることで、前記エアギャップを目標値と一致させるよう
にした第3の工程とを備えたことを特徴とする。In order to achieve the above object, the invention described in claim 1 provides a housing comprising a housing body, a coil, a fixed core, a yoke body and a valve seat support member, a fixed core and a housing. A movable core movably disposed between the valve seat support members and attracted to the fixed core by excitation of the coil, an elastic urging means for urging the movable core in a direction away from the fixed core, and a valve seat support A valve rod having a valve body that can be seated on a valve seat provided on the member, and a valve rod connected to the movable core; and an outer peripheral portion of the valve rod sandwiched between the yoke body and the valve seat support member.
A normally closed solenoid valve having a bearing plate for movably guiding an air gap formed between the fixed core and the movable core when the valve body is seated on the valve seat to a predetermined size. An air gap adjusting method for determining the thickness of the bearing plate, the first reference surface of the yoke body and the valve body contacting one end surface of the bearing plate in a state where the movable core is pressed against the fixed core. A first step of measuring a first distance between the front end of the valve seat and a second distance between a second reference surface of the valve seat support member with which the other end surface of the bearing plate abuts and the front end of the valve seat. A second step of measuring, and a thickness of the bearing plate is determined based on the first and second distances and the air gap, and the thickness of the determined thickness is determined .
Set the bearing plate correctly between the yoke body and the valve seat support member.
In this way, the air gap is made to coincide with a target value.
And a third step described above.
【0006】また請求項2に記載された発明は、請求項
1の構成に加えて、前記第2の工程において、弁座に弁
体と同一の曲率半径を有する球体を載置し、球体の頂点
と前記第2基準面との間の第3の距離を測定し、第3の
距離と球体の直径とに基づいて前記第2の距離を求める
ことを特徴とする。According to a second aspect of the present invention, in addition to the configuration of the first aspect, in the second step, a sphere having the same radius of curvature as the valve body is placed on the valve seat, and A third distance between a vertex and the second reference plane is measured, and the second distance is determined based on the third distance and a diameter of a sphere.
【0007】また請求項3に記載された発明は、ハウジ
ング本体、コイル、固定コア、ヨーク体及び弁座支持部
材からなるハウジングと、固定コアを挟んで弁座支持部
材の反対側に移動自在に配設されてコイルの励磁により
固定コアに吸引される可動コアと、可動コアを固定コア
から離間する方向に付勢する弾発付勢手段と、弁座支持
部材に設けた弁座に着座可能な弁体を有して可動コアに
連設された弁杆と、ヨーク体及び可動コア間に配設され
て弁杆を案内する軸受板とを備えてなる常開型電磁弁に
おいて、弁体が弁座から離間しているときに固定コア及
び可動コアの対向部に形成されるエアギャップを所定の
大きさに調整すべく、前記軸受板の厚さを決定するエア
ギャップ調整方法であって、ヨーク体上に設定されて軸
受板の一端面が当接する第1基準面とヨーク体上に設定
されて固定コアを位置決めする第2基準面との間の第1
の距離を測定する第1の工程と、可動コアに対向する固
定コアの端面と第2基準面との間の第2の距離を測定す
る第2の工程と、固定コアに対向する可動コアの端面と
軸受板に当接する可動コアの端面との間の第3の距離を
測定する第3の工程と、前記第1、第2及び第3の距離
並びに前記エアギャップに基づいて軸受板の厚さを決定
する第4の工程とを備えたことを特徴とする。According to a third aspect of the present invention, there is provided a housing comprising a housing body, a coil, a fixed core, a yoke, and a valve seat support member, and movably to the opposite side of the valve seat support member across the fixed core. A movable core that is provided and is attracted to the fixed core by excitation of the coil, an elastic biasing unit that biases the movable core in a direction away from the fixed core, and can be seated on a valve seat provided on the valve seat support member A normally open solenoid valve comprising: a valve rod having a variable valve body and connected to the movable core; and a bearing plate disposed between the yoke body and the movable core to guide the valve rod. An air gap adjusting method for determining a thickness of the bearing plate so as to adjust an air gap formed at a portion facing the fixed core and the movable core to a predetermined size when the air bearing is away from the valve seat. And one end of the bearing plate First between the first reference surface and is set on the yoke body second reference surface for positioning the fixed core
A first step of measuring a distance between the movable core and a second step of measuring a second distance between an end surface of the fixed core facing the movable core and a second reference plane; A third step of measuring a third distance between an end face and an end face of the movable core abutting the bearing plate; and a thickness of the bearing plate based on the first, second, and third distances and the air gap. And a fourth step of determining the length.
【0008】また請求項4に記載された発明は、ハウジ
ング本体、コイル、固定コア、ヨーク体及び弁座支持部
材からなるハウジングと、固定コアを挟んで弁座支持部
材の反対側に移動自在に配設されてコイルの励磁により
固定コアに吸引される可動コアと、可動コアを固定コア
から離間する方向に付勢する弾発付勢手段と、弁座支持
部材に設けた弁座に着座可能な弁体を有して可動コアに
連設された弁杆と、ヨーク体及び弁座支持部材間あるい
は固定コア及び弁座支持部材間に挟持されて弁杆を案内
する軸受板とを備えてなる常開型電磁弁において、弁体
が弁座から離間しているときに弁体の先端と弁座の先端
との間に形成されるバルブストロークを所定の大きさに
調整すべく、前記軸受板の厚さを決定するバルブストロ
ーク調整方法であって、軸受板の一端面が当接する固定
コア又はヨーク体の第1基準面と弁体の先端との間の第
1の距離を測定する第1の工程と、軸受板の他端面が当
接する弁座支持部材の第2基準面と弁座の先端との間の
第2の距離を測定する第2の工程と、前記第1、第2の
距離並びに前記バルブストロークに基づいて軸受板の厚
さを決定する第3の工程とを備えたことを特徴とする。According to a fourth aspect of the present invention, there is provided a housing including a housing body, a coil, a fixed core, a yoke, and a valve seat supporting member, and the movable body being movable to the opposite side of the valve seat supporting member across the fixed core. A movable core that is provided and is attracted to the fixed core by excitation of the coil, an elastic biasing unit that biases the movable core in a direction away from the fixed core, and can be seated on a valve seat provided on the valve seat support member A valve rod connected to the movable core having a flexible valve body, and a bearing plate for guiding the valve rod between the yoke body and the valve seat support member or between the fixed core and the valve seat support member. In the normally open solenoid valve, the bearing is provided so as to adjust a valve stroke formed between a tip of the valve body and a tip of the valve seat to a predetermined size when the valve body is separated from the valve seat. A valve stroke adjustment method that determines the thickness of the plate A first step of measuring a first distance between the first reference surface of the fixed core or yoke body with which one end surface of the bearing plate abuts and the tip of the valve body, and the other end surface of the bearing plate abuts Measuring a second distance between a second reference surface of the valve seat support member and the tip of the valve seat; and determining a thickness of the bearing plate based on the first and second distances and the valve stroke. And a third step of determining the degree.
【0009】また請求項5に記載された発明は、請求項
4の構成に加えて、前記第2の工程において、弁座に弁
体と同一の曲率半径を有する球体を載置し、球体の頂点
と前記第2基準面との間の第3の距離を測定し、第3の
距離と球体の直径とに基づいて前記第2の距離を求める
ことを特徴とする。According to a fifth aspect of the present invention, in addition to the configuration of the fourth aspect, in the second step, a sphere having the same radius of curvature as the valve body is placed on the valve seat, and A third distance between a vertex and the second reference plane is measured, and the second distance is determined based on the third distance and a diameter of a sphere.
【0010】[0010]
【実施例】以下、図面により本発明の実施例について説
明する。Embodiments of the present invention will be described below with reference to the drawings.
【0011】先ず、本発明を常閉型電磁弁V1 のエアギ
ャップ調整に適用した第1実施例から説明する。図1に
おいて、ハウジング1は、有底で段付円筒状の磁性体か
らなるハウジング本体2と、このハウジング本体2の開
口端にかしめ結合される環状のヨーク体3と、このヨー
ク体3の開放端にかしめ結合される弁座支持部材4とか
らなっており、その弁座支持部材4にオリフィス付の第
1ポート51 が、またヨーク体3に第2ポート52 がそ
れぞれ設けられる。ハウジング本体2の大径部にはコイ
ル6を巻装したボビン7が収納され、またハウジング本
体2の有底小径部には固定コア8が嵌装される。この固
定コア8及びヨーク体3には、ボビン7の内周面に嵌合
した非磁性体からなる案内筒9の両端部が印籠嵌合の
上、ろう付けされる。[0011] First, the present invention from the first embodiment applied to an air gap adjustment of the normally closed electromagnetic valve V 1. In FIG. 1, a housing 1 includes a housing main body 2 made of a stepped cylindrical magnetic body having a bottom, an annular yoke body 3 which is caulked to an open end of the housing main body 2, and an opening of the yoke body 3. It has become a valve seat support member 4 which is caulking to an end, the first port 5 1 dated orifice to the valve seat support member 4, and the second port 5 2 are respectively provided in the yoke body 3. A bobbin 7 around which a coil 6 is wound is accommodated in a large diameter portion of the housing body 2, and a fixed core 8 is fitted in a bottomed small diameter portion of the housing body 2. Both ends of a guide tube 9 made of a non-magnetic material fitted on the inner peripheral surface of the bobbin 7 are brazed to the fixed core 8 and the yoke body 3 after fitting the seals.
【0012】ヨーク体3及び案内筒9は、それらの内周
面によって一連の円筒状案内孔10を画成するもので、
固定コア8に非磁性体のスペーサ11を挟んで対向する
可動コア12がこの案内孔10に摺動自在に嵌合され
る。可動コア12には、その中心部を貫通する弁杆13
が結合されており、この弁杆13の一端に形成された半
球状弁体13aが着座し得る弁座14が弁座支持部材4
の取付孔4aに嵌着され、弁杆13を弁座14への着座
方向へ付勢すべくコイル状の戻しばね15が固定及び可
動コア8,12間に縮設される。The yoke body 3 and the guide cylinder 9 define a series of cylindrical guide holes 10 by their inner peripheral surfaces.
A movable core 12 facing the fixed core 8 with a nonmagnetic spacer 11 interposed therebetween is slidably fitted in the guide hole 10. The movable core 12 has a valve rod 13 penetrating the center thereof.
And a valve seat 14 on which a hemispherical valve body 13a formed at one end of the valve rod 13 can be seated.
A coil-shaped return spring 15 is fitted between the fixed and movable cores 8 and 12 so as to urge the valve rod 13 in the seating direction on the valve seat 14.
【0013】弁体13aにより開閉される弁座14の弁
孔14aは前記第1ポート51 に連なっている。また弁
杆13を弁座14と同軸上に保持するために、弁杆13
の上部外周を摺動自在に支承する軸受板16がヨーク体
3の大径取付孔3aに嵌合され、弁座支持部材4に設け
た環状突起4b及びヨーク体3間に挟持される。弁座支
持部材4の環状突起4bには複数の通孔4cが設けら
れ、この通孔4cを介して弁孔14aと第2ポート52
とが連通するようになっている。[0013] the valve hole 14a of the valve seat 14 which is opened and closed by the valve body 13a is continuous with the first port 5 1. In order to hold the valve rod 13 coaxially with the valve seat 14, the valve rod 13
A bearing plate 16 that slidably supports the outer periphery of the upper part of the valve seat is fitted into the large-diameter mounting hole 3 a of the yoke body 3, and is sandwiched between the annular projection 4 b provided on the valve seat support member 4 and the yoke body 3. A plurality of through holes 4c are provided in the annular projection 4b of the valve seat support member 4, the valve hole 14a and the second port 5 2 through the through hole 4c
And communicate with each other.
【0014】常閉型電磁弁V1 が図示した閉弁状態にあ
るとき、可動コア12の移動可能距離、即ちバルブスト
ロークVSは、固定コア8及び可動コア12の対向面間
の距離であるエアギャップAGからスペーサ11の厚さ
SPを引いた値になる。When the normally closed solenoid valve V 1 is in the closed state shown in the figure, the movable distance of the movable core 12, that is, the valve stroke VS, is the air which is the distance between the opposed surfaces of the fixed core 8 and the movable core 12. It is a value obtained by subtracting the thickness SP of the spacer 11 from the gap AG.
【0015】 VS=AG−SP ……(1) 前記各寸法の一例を挙げると、エアギャップAG=0.
5mm、バルブストロークVS=0.3mm、スペーサ
の厚さSP=0.2mmである。前記エアギャップAG
の大きさは、ヨーク体3と弁座支持部材4との間に挟持
される軸受板16の厚さXによって調整可能である。即
ち、軸受板16の厚さXを大きくすると、固定コア8と
弁座14との距離が大きくなって前記エアギャップAG
が増加し、逆に軸受板16の厚さXを小さくすると、固
定コア8と弁座14との距離が小さくなって前記エアギ
ャップAGが減少する。従って、以下に示す方法によっ
て軸受板16の厚さXを決定し、その厚さXを有する軸
受板16を装着することにより、エアギャップAGの大
きさを所望の値に調整することができる。VS = AG-SP (1) To give an example of each of the above dimensions, air gap AG = 0.
5 mm, valve stroke VS = 0.3 mm, and spacer thickness SP = 0.2 mm. The air gap AG
Can be adjusted by the thickness X of the bearing plate 16 sandwiched between the yoke body 3 and the valve seat support member 4. That is, when the thickness X of the bearing plate 16 is increased, the distance between the fixed core 8 and the valve seat 14 is increased, and the air gap AG is increased.
When the thickness X of the bearing plate 16 is reduced, the distance between the fixed core 8 and the valve seat 14 is reduced, and the air gap AG is reduced. Therefore, the thickness X of the bearing plate 16 is determined by the method described below, and the size of the air gap AG can be adjusted to a desired value by mounting the bearing plate 16 having the thickness X.
【0016】先ず、図2に示すように、ヨーク体3に弁
座支持部材4をかしめ結合する前の状態において、ヨー
ク体3の小径取付孔3bに弁杆13を貫通させた仮軸受
17を圧入することにより、弁杆13が傾かないように
可動コア12を仮止めする。このとき、可動コア12は
仮軸受17に押圧されてスペーサ11に当接する状態、
即ちバルブストロークVSが0になる開弁状態に固定さ
れる。この状態で、軸受板16の一端面が当接する第1
基準面P1 (ヨーク体3の大径取付孔3aの底壁)と弁
杆13の弁体13aの先端との距離Aを、ダイヤルゲー
ジ等の測定手段により測定する。First, as shown in FIG. 2, before the valve seat supporting member 4 is caulked to the yoke body 3, the temporary bearing 17 having the valve rod 13 penetrated through the small-diameter mounting hole 3b of the yoke body 3 is inserted. By press-fitting, the movable core 12 is temporarily fixed so that the valve rod 13 does not tilt. At this time, the movable core 12 is pressed by the temporary bearing 17 and abuts on the spacer 11,
That is, the valve is fixed in an open state where the valve stroke VS becomes zero. In this state, the first end of the bearing plate 16 abuts against the first end.
The distance A between the reference plane P 1 (the bottom wall of the large-diameter mounting hole 3a of the yoke body 3) and the tip of the valve body 13a of the valve rod 13 is measured by a measuring means such as a dial gauge.
【0017】続いて、図3に示すように、かしめ結合前
の弁座支持部材4に圧入された弁座14の弁孔14a
に、弁杆13の半球状弁体13aと同一直径dを有する
球体18を乗せ、軸受板16の他端面が当接する第2基
準面P2 (弁座支持部材4の環状突起4bの先端)と球
体18の頂点との距離Bをダイヤルゲージ等の測定手段
により測定する。このとき、球体18の直径はdである
から、第2基準面P2 と弁孔14aの先端との距離C
は、 C=B+d ……(2) で表される。また、第1基準面P1 と第2基準面P2 と
の距離は弁座支持部材4をかしめ結合した後の軸受板1
6の厚さXに等しいことから、弁座支持部材4をかしめ
結合した後の第1基準面P1 と弁孔14aの先端との距
離Dは、 D=B+d+X ……(3) で表される。Subsequently, as shown in FIG. 3, the valve hole 14a of the valve seat 14 press-fitted into the valve seat support member 4 before the caulking connection.
A hemispherical valve element 13a and topped with a sphere 18 having the same diameter d, (the tip of the valve seat support member 4 of the annular projection 4b) second reference plane P 2 of the other end face of the bearing plate 16 abuts the valve stem 13 The distance B between the sphere 18 and the vertex is measured by a measuring means such as a dial gauge. At this time, since the diameter of the sphere 18 is d, the distance between the tip of the second reference plane P 2 and the valve hole 14a C
Is represented by C = B + d (2). The distance between the first reference plane P 1 and the second reference plane P 2 is determined by the length of the bearing plate 1 after the valve seat supporting member 4 is caulked and connected.
Since equal to the thickness X of 6, the distance D between the tip of the first reference plane P 1 and the valve hole 14a after caulking the valve seat support member 4 is represented by D = B + d + X ...... (3) You.
【0018】而して、バルブストロークVSは、第1基
準面P1 と弁孔14aの先端との距離Dから、第1基準
面P1 と開弁状態にある弁杆13の弁体13aの先端と
の距離Aを引いた値で表される。[0018] In Thus, the valve stroke VS from the distance D between the tip of the first reference plane P 1 and the valve hole 14a, the valve element 13a of the first reference plane P 1 and the valve stem 13 in the open state It is represented by a value obtained by subtracting the distance A from the tip.
【0019】 VS=D−A=−A+B+d+X ……(4) 従って、(1)式及び(4)式から、 VS=AG−SP=−A+B+d+X ……(5) が成立ち、これから、求める軸受板16の厚さXは、 X=AG−SP+A−B−d ……(6) で与えられる。VS = DA = -A + B + d + X (4) Therefore, from the equations (1) and (4), VS = AG-SP = -A + B + d + X (5) The thickness X of the plate 16 is given by: X = AG-SP + ABd (6)
【0020】つまり、式(6)で与えられた厚さXを有
する軸受板16を、予め準備された厚さXの異なる複数
の軸受板16のなかから選択し、ヨーク3から仮軸受1
7を取り外した後にヨーク3と弁座支持部材4間に組み
付けることにより、従来必要であった仮スペーサを用い
ることなく、エアギャップAGを所望の値に設定するこ
とができる。尚、軸受板16の種類は、最も使用頻度の
多い厚さを中心に例えば0.05mm間隔で複数種類
(7種類程度)準備しておけば良い。That is, the bearing plate 16 having the thickness X given by the equation (6) is selected from a plurality of bearing plates 16 having different thicknesses X prepared in advance, and the provisional bearing 1 is selected from the yoke 3.
By assembling the yoke 3 and the valve seat supporting member 4 after removing the air gap 7, the air gap AG can be set to a desired value without using a temporary spacer which has been conventionally required. It should be noted that a plurality of types (about seven types) of the bearing plate 16 may be prepared at, for example, 0.05 mm intervals centering on the most frequently used thickness.
【0021】次に、図4により本発明を常開型電磁弁V
2 のエアギャップ調整及びバルブストローク調整に適用
した第2実施例について説明する。Next, referring to FIG.
A second embodiment applied to the air gap adjustment and the valve stroke adjustment of No. 2 will be described.
【0022】常開型電磁弁V2 は、ハウジング1のハウ
ジング本体2の有底小径部に有底の下部ヨーク体30が
嵌入され、この下部ヨーク体30が案内筒9の一端に嵌
合の上、ろう付けされ、これらの内周面により案内孔1
0が画成される。また上部ヨーク体3には固定コア8が
嵌着され、これに対向する可動コア12が案内孔10に
摺動自在に嵌合される。可動コア12には、その中心部
に貫通する弁杆13が結合されており、この弁杆13を
弁座14から離間すべく、即ち可動コア12を開弁方向
へ付勢すべく戻しばね15が固定及び可動コア8,12
間に縮設される。したがって、可動コア12は、コイル
6の消磁状態では、戻しばね15の弾発力により、弁体
13aを弁座14から引き離した開弁位置に保持され、
またコイル6の励磁状態では、固定コア8間の吸引力に
より、弁体13aを弁座14に着座させた閉弁位置に保
持される。The normally open solenoid valve V 2 has a lower yoke 30 with a bottom fitted in a small diameter portion with a bottom of the housing body 2 of the housing 1, and the lower yoke 30 is fitted to one end of the guide cylinder 9. Above, it is brazed, and guide hole 1 is formed by these inner peripheral surfaces.
0 is defined. A fixed core 8 is fitted to the upper yoke body 3, and a movable core 12 facing the fixed core 8 is slidably fitted to the guide hole 10. A valve rod 13 penetrating the center of the movable core 12 is connected to the movable core 12. A return spring 15 is provided to separate the valve rod 13 from the valve seat 14, that is, to bias the movable core 12 in the valve opening direction. Are fixed and movable cores 8 and 12
It is contracted between. Therefore, when the coil 6 is in the demagnetized state, the movable core 12 is held at the valve-opening position where the valve element 13a is separated from the valve seat 14 by the elastic force of the return spring 15,
Further, in the excited state of the coil 6, the valve 13 a is held at the valve closing position in which the valve 13 a is seated on the valve seat 14 by the attraction force between the fixed cores 8.
【0023】固定コア8と弁座支持部材4間には弁杆1
3の上部を摺動自在に支承する軸受板16が挟持され、
また下部ヨーク体30の底部には弁杆13の下部を摺動
自在に支承する軸受板31が嵌装される。消磁状態にお
いて可動コア12の下端を支持する軸受板31の厚さY
の選定により、固定コア8と可動コア12間の距離であ
るエアギャップAGが調整されると共に、固定コア8と
ヨーク体9間の距離を決定する軸受板16の厚さZの選
定により、弁体13aの先端との弁孔14aの先端間の
距離であるバルブストロークVSが調整される。このと
き、弁体13aが弁座14に正しく着座し得るように、
エアギャップAGはバルブストロークVSよりも大きく
設定される。The valve rod 1 is provided between the fixed core 8 and the valve seat support member 4.
A bearing plate 16 that slidably supports the upper part of 3 is sandwiched,
A bearing plate 31 that slidably supports the lower portion of the valve rod 13 is fitted to the bottom of the lower yoke body 30. Thickness Y of bearing plate 31 supporting the lower end of movable core 12 in the demagnetized state
The air gap AG, which is the distance between the fixed core 8 and the movable core 12, is adjusted by selecting the fixed core 8 and the thickness Z of the bearing plate 16 that determines the distance between the fixed core 8 and the yoke body 9. The valve stroke VS, which is the distance between the tip of the body 13a and the tip of the valve hole 14a, is adjusted. At this time, so that the valve body 13a can be properly seated on the valve seat 14,
The air gap AG is set to be larger than the valve stroke VS.
【0024】先ず、前記エアギャップAGの調整方法に
ついて説明する。First, a method of adjusting the air gap AG will be described.
【0025】ハウジング本体2にコイル6、下部ヨーク
体30、案内筒9及び上部ヨーク体3を組み付けた状態
で、下部ヨーク体30上に設定した第1基準面P3 (下
部ヨーク体30の底壁)と、上部ヨーク体3に設定した
第2基準面P4 (固定コア8と上部ヨーク体3とが相互
に係合する段部)との間の距離Eを測定する。また固定
コア8の前記段部から下の部分の軸方向長さFと、可動
コア12の軸方向長さGとをそれぞれ測定する。前記距
離Eに関して、軸受板31の厚さをYとし、エアギャッ
プをAGとすると、 Y=E−F−G−AG ……(7) の関係が成り立つ。これは、(7)式に基づいて得られ
た所定の厚さYを有する軸受板31を選択して使用する
ことにより、仮スペーサを用いることなく所望のエアギ
ャップAGを確保できることを示している。With the coil 6, the lower yoke 30, the guide tube 9 and the upper yoke 3 assembled to the housing body 2, a first reference plane P 3 (the bottom of the lower yoke 30) is set on the lower yoke 30. The distance E between the wall and the second reference plane P 4 (the step where the fixed core 8 and the upper yoke body 3 are engaged with each other) set on the upper yoke body 3 is measured. Further, the axial length F of the portion below the step portion of the fixed core 8 and the axial length G of the movable core 12 are measured. As for the distance E, if the thickness of the bearing plate 31 is Y and the air gap is AG, the following relationship holds: Y = EFGG-AG (7). This indicates that a desired air gap AG can be secured without using a temporary spacer by selecting and using the bearing plate 31 having a predetermined thickness Y obtained based on the equation (7). .
【0026】次に、バルブストロークVSの調整方法に
ついて説明する。Next, a method of adjusting the valve stroke VS will be described.
【0027】常開型電磁弁V2 に弁座支持部材4及び軸
受板16を組み付ける前の状態で、固定コア8上に設定
した第1基準面P5 (軸受板16との当接面)と弁杆1
3の弁体13aの先端との距離Hを測定する。尚、軸受
板16がヨーク体3に支持される場合には、前記第1基
準面P5 はヨーク体3上に設定される。Before the valve seat support member 4 and the bearing plate 16 are assembled to the normally open solenoid valve V 2 , a first reference plane P 5 (contact surface with the bearing plate 16) set on the fixed core 8. And valve rod 1
The distance H to the tip of the third valve body 13a is measured. In the case where the bearing plate 16 is supported on the yoke body 3, the first reference plane P 5 is set on the yoke body 3.
【0028】次に、図5に示すように、弁座支持部材4
に圧入された弁座14の弁孔14aに、弁杆13の半球
状弁体13aと同一直径dを有する球体18を乗せ、弁
座支持部材4に設定した第2基準面P6 (軸受板16と
の当接面)と球体18の頂点との距離Iを測定する。こ
れにより、第2基準面P6 と弁孔14aの先端との距離
Jは、d−Iによって与えられる。Next, as shown in FIG.
The spherical body 18 having the same diameter d as the hemispherical valve body 13a of the valve rod 13 is placed on the valve hole 14a of the valve seat 14 press-fitted into the valve seat 14, and the second reference plane P 6 (bearing plate) set on the valve seat support member 4 The distance I between the abutment surface 16 and the vertex of the sphere 18 is measured. Thus, the distance J between the tip of the second reference plane P 6 and the valve hole 14a is given by d-I.
【0029】而して、軸受板16の厚さをZとし、バル
ブストロークをVSとすると、 Z=H+VS−J ……(8) の関係が成り立つ(図4参照)。これは、(8)式に基
づいて得られた所定の厚さZを有する軸受板16を選択
して使用することにより、仮スペーサを用いることなく
所望のバルブストロークVSを確保できることを示して
いる。Assuming that the thickness of the bearing plate 16 is Z and the valve stroke is VS, the following relationship holds: Z = H + VS-J (8). This indicates that a desired valve stroke VS can be secured without using a temporary spacer by selecting and using the bearing plate 16 having a predetermined thickness Z obtained based on the equation (8). .
【0030】以上、本発明の実施例を詳述したが、本発
明は前記実施例に限定されるものではなく、種々の設計
変更を行うことが可能である。Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design changes can be made.
【0031】[0031]
【発明の効果】以上のように、請求項1,3,4に記載
された発明によれば、電磁弁の組立中に基準面からの各
寸法を測定しておき、その測定した寸法と目標とするエ
アギャップ又はバルブストロークとに基づいて軸受板の
厚さを決定し、その決定された厚さの軸受板を所定位置
に正しくセットすることで、前記エアギャップ又はバル
ブストロークを目標値に一致させることができる。これ
により、従来必要であった仮スペーサが不要になり、部
品点数及び組立工数の削減を図ることが可能となる。そ
の上、弁杆を摺動案内する軸受板自体が、エアギャップ
又はバルブストロークを調整するための調整板に兼用さ
れるため、それだけ調整構造が簡素化されてコスト節減
が図られ、取り扱いも簡便となる。 As described above, according to the first, third, and fourth aspects of the present invention, during assembly of the solenoid valve, each dimension from the reference plane is measured, and the measured dimension and the target are measured. The thickness of the bearing plate is determined on the basis of the air gap or the valve stroke, and the bearing plate having the determined thickness is placed at a predetermined position.
By properly setting the air gap or the valve stroke, the air gap or the valve stroke can be made to coincide with the target value. This eliminates the need for a temporary spacer, which has been conventionally required, and reduces the number of parts and the number of assembly steps. So
The bearing plate that slides and guides the valve rod
Or used as an adjustment plate for adjusting the valve stroke.
Simplifies the adjustment structure and reduces costs
And the handling becomes simple.
【0032】また請求項2,5に記載された発明によれ
ば、弁座に弁体と同一の曲率半径を有する球体を載置
し、この球体の頂点を基準として距離を測定しているの
で、凹状に窪んだ弁座の先端からの距離を容易且つ正確
に測定することができる。According to the second and fifth aspects of the present invention, a sphere having the same radius of curvature as the valve body is placed on the valve seat, and the distance is measured with reference to the apex of the sphere. In addition, the distance from the tip of the valve seat recessed in a concave shape can be easily and accurately measured.
【図1】本発明の第1実施例を示す常閉型電磁弁の縦断
面図FIG. 1 is a longitudinal sectional view of a normally closed solenoid valve according to a first embodiment of the present invention.
【図2】第1基準面と弁体の先端間の距離測定の説明図FIG. 2 is an explanatory diagram of a distance measurement between a first reference plane and a tip of a valve body.
【図3】第2基準面と弁座の先端間の距離測定の説明図FIG. 3 is an explanatory diagram of a distance measurement between a second reference plane and a tip of a valve seat.
【図4】本発明の第2実施例を示す常開型電磁弁の縦断
面図FIG. 4 is a longitudinal sectional view of a normally-open solenoid valve according to a second embodiment of the present invention.
【図5】第2基準面と弁座の先端間の距離測定の説明図FIG. 5 is an explanatory diagram of a distance measurement between a second reference plane and a tip of a valve seat.
1 ハウジング 2 ハウジング本体 3 ヨーク体 4 弁座支持部材 6 コイル 8 固定コア 12 可動コア 13 弁杆 13a 弁体 14 弁座 15 戻しばね(弾発付勢手段) 16 軸受板 18 球体 30 ヨーク体 31 軸受板 AG エアギャップ VS バルブストローク P1 第1基準面 P2 第2基準面 P3 第1基準面 P4 第2基準面 P5 第1基準面 P6 第2基準面DESCRIPTION OF SYMBOLS 1 Housing 2 Housing main body 3 Yoke body 4 Valve seat support member 6 Coil 8 Fixed core 12 Movable core 13 Valve rod 13a Valve body 14 Valve seat 15 Return spring (elastic urging means) 16 Bearing plate 18 Sphere 30 Yoke body 31 Bearing plate AG air gap VS valve stroke P 1 first reference plane P 2 a second reference plane P 3 the first reference plane P 4 second reference plane P 5 first reference plane P 6 second reference plane
Claims (5)
固定コア(8)、ヨーク体(3)及び弁座支持部材
(4)からなるハウジング(1)と、固定コア(8)及
び弁座支持部材(4)間に移動自在に配設されてコイル
(6)の励磁により固定コア(8)に吸引される可動コ
ア(12)と、可動コア(12)を固定コア(8)から
離間する方向に付勢する弾発付勢手段(15)と、弁座
支持部材(4)に設けた弁座(14)に着座可能な弁体
(13a)を有して可動コア(12)に連設された弁杆
(13)と、ヨーク体(3)及び弁座支持部材(4)間
に挟持されて弁杆(13)の外周部を摺動自在に案内す
る軸受板(16)とを備えてなる常閉型電磁弁におい
て、弁体(13a)が弁座(14)に着座しているとき
に固定コア(8)及び可動コア(12)の対向部に形成
されるエアギャップ(AG)を所定の大きさに調整すべ
く、前記軸受板(16)の厚さ(X)を決定するエアギ
ャップ調整方法であって、 可動コア(12)を固定コア(8)に圧接した状態で軸
受板(16)の一端面が当接するヨーク体(3)の第1
基準面(P1 )と弁体(13a)の先端との間の第1の
距離(A)を測定する第1の工程と、 軸受板(16)の他端面が当接する弁座支持部材(4)
の第2基準面(P2 )と弁座(14)の先端との間の第
2の距離(C)を測定する第2の工程と、 前記第1、第2の距離(A,C)及び前記エアギャップ
(AG)に基づいて軸受板(16)の厚さ(X)を決定
し、その決定された厚さ(X)の軸受板(16)をヨー
ク体(3)及び弁座支持部材(4)間に正しくセットす
ることで、前記エアギャップ(AG)を目標値と一致さ
せるようにした第3の工程とを備えたことを特徴とす
る、常閉型電磁弁におけるエアギャップ調整方法。1. A housing body (2), a coil (6),
A housing (1) comprising a fixed core (8), a yoke body (3) and a valve seat support member (4); and a coil movably disposed between the fixed core (8) and the valve seat support member (4). A movable core (12) attracted to the fixed core (8) by the excitation of (6); and a resilient biasing means (15) for biasing the movable core (12) in a direction away from the fixed core (8). A valve rod (13) having a valve body (13a) that can be seated on a valve seat (14) provided on a valve seat support member (4) and connected to a movable core (12); and a yoke body (3). ) And a bearing plate (16) sandwiched between the valve seat support members (4) to slidably guide the outer peripheral portion of the valve rod (13). ) Is seated on the valve seat (14), the air gap (A) formed in the opposed portion of the fixed core (8) and the movable core (12). ) To adjust the thickness (X) of the bearing plate (16) to a predetermined size, wherein the movable core (12) is pressed against the fixed core (8). First of the yoke body (3) with which one end face of the bearing plate (16) is in contact.
A first step of measuring a first distance (A) between the reference plane (P 1 ) and the tip of the valve element (13a), and a valve seat support member ( 4)
A second step of measuring a second distance (C) between the second reference plane (P 2 ) and the tip of the valve seat (14), and the first and second distances (A, C). And the thickness (X) of the bearing plate (16) is determined based on the air gap (AG).
Then, the bearing plate (16) having the determined thickness (X) is yawed.
Correctly set between the lock body (3) and the valve seat support member (4).
In this way, the air gap (AG) matches the target value.
And an air gap adjusting method for the normally closed solenoid valve.
に弁体(13a)と同一の曲率半径を有する球体(1
8)を載置し、球体(18)の頂点と前記第2基準面
(P2 )との間の第3の距離(B)を測定し、第3の距
離(B)と球体(18)の直径(d)とに基づいて前記
第2の距離(C)を求めることを特徴とする、請求項1
記載の常閉型電磁弁におけるエアギャップ調整方法。2. In the second step, a valve seat (14) is provided.
The spherical body (1) having the same radius of curvature as the valve body (13a)
8) is placed, a third distance (B) between the vertex of the sphere (18) and the second reference plane (P 2 ) is measured, and the third distance (B) and the sphere (18) are measured. The second distance (C) is determined based on the diameter (d) of the first distance.
An air gap adjusting method for the normally closed solenoid valve according to the above.
固定コア(8)、ヨーク体(3,30)及び弁座支持部
材(4)からなるハウジング(1)と、固定コア(8)
を挟んで弁座支持部材(4)の反対側に移動自在に配設
されてコイル(6)の励磁により固定コア(8)に吸引
される可動コア(12)と、可動コア(12)を固定コ
ア(8)から離間する方向に付勢する弾発付勢手段(1
5)と、弁座支持部材(4)に設けた弁座(14)に着
座可能な弁体(13a)を有して可動コア(12)に連
設された弁杆(13)と、ヨーク体(30)及び可動コ
ア(12)間に配設されて弁杆(13)を案内する軸受
板(31)とを備えてなる常開型電磁弁において、弁体
(13a)が弁座(14)から離間しているときに固定
コア(8)及び可動コア(12)の対向部に形成される
エアギャップ(AG)を所定の大きさに調整すべく、前
記軸受板(31)の厚さ(Y)を決定するエアギャップ
調整方法であって、 ヨーク体(30)上に設定されて軸受板(31)の一端
面が当接する第1基準面(P3 )とヨーク体(3)上に
設定されて固定コア(8)を位置決めする第2基準面
(P4 )との間の第1の距離(E)を測定する第1の工
程と、可動コア(12)に対向する固定コア(8)の端
面と第2基準面(P4 )との間の第2の距離(F)を測
定する第2の工程と、固定コア(8)に対向する可動コ
ア(12)の端面と軸受板(31)に当接する可動コア
(12)の端面との間の第3の距離(G)を測定する第
3の工程と、前記第1、第2及び第3の距離(E,F,
G)並びに前記エアギャップ(AG)に基づいて軸受板
(31)の厚さ(Y)を決定する第4の工程とを備えた
ことを特徴とする、常開型電磁弁におけるエアギャップ
調整方法。3. A housing body (2), a coil (6),
A housing (1) comprising a fixed core (8), a yoke body (3, 30) and a valve seat support member (4); and a fixed core (8)
A movable core (12) movably disposed on the opposite side of the valve seat support member (4) with the movable core (12) attracted to the fixed core (8) by excitation of the coil (6); A resilient urging means (1) for urging in a direction away from the fixed core (8).
5) a valve rod (13) having a valve body (13a) that can be seated on a valve seat (14) provided on a valve seat support member (4) and connected to a movable core (12); In a normally open solenoid valve including a bearing plate (31) disposed between a body (30) and a movable core (12) to guide a valve rod (13), a valve body (13a) includes a valve seat (13). The thickness of the bearing plate (31) is adjusted so as to adjust the air gap (AG) formed at the opposed portion of the fixed core (8) and the movable core (12) to a predetermined size when the bearing plate (31) is separated from the fixed core (8). An air gap adjusting method for determining the length (Y), wherein a first reference surface (P 3 ) which is set on a yoke body (30) and one end surface of a bearing plate (31) is in contact with the yoke body (3) A first step for measuring a first distance (E) between the second reference plane (P 4 ) and the second reference plane (P 4 ) for positioning the fixed core (8); A second step of measuring a second distance (F) between the end surface of the fixed core (8) facing the movable core (12) and the second reference plane (P 4 ); 8) a third step of measuring a third distance (G) between an end face of the movable core (12) opposed to 8) and an end face of the movable core (12) abutting on the bearing plate (31); 1, second and third distances (E, F,
G) and a fourth step of determining the thickness (Y) of the bearing plate (31) based on the air gap (AG). .
固定コア(8)、ヨーク体(3)及び弁座支持部材
(4)からなるハウジング(1)と、固定コア(8)を
挟んで弁座支持部材(4)の反対側に移動自在に配設さ
れてコイル(6)の励磁により固定コア(8)に吸引さ
れる可動コア(12)と、可動コア(12)を固定コア
(8)から離間する方向に付勢する弾発付勢手段(1
5)と、弁座支持部材(4)に設けた弁座(14)に着
座可能な弁体(13a)を有して可動コア(12)に連
設された弁杆(13)と、ヨーク体(3)及び弁座支持
部材(4)間あるいは固定コア(8)及び弁座支持部材
(4)間に挟持されて弁杆(13)を案内する軸受板
(16)とを備えてなる常開型電磁弁において、弁体
(13a)が弁座(14)から離間しているときに弁体
(13a)の先端と弁座(14)の先端との間に形成さ
れるバルブストローク(VS)を所定の大きさに調整す
べく、前記軸受板(16)の厚さ(Z)を決定するバル
ブストローク調整方法であって、 軸受板(16)の一端面が当接する固定コア(8)又は
ヨーク体(3)の第1基準面(P5 )と弁体(13a)
の先端との間の第1の距離(H)を測定する第1の工程
と、軸受板(16)の他端面が当接する弁座支持部材
(4)の第2基準面(P6 )と弁座(14)の先端との
間の第2の距離(J)を測定する第2の工程と、前記第
1、第2の距離(H,J)並びに前記バルブストローク
(VS)に基づいて軸受板(16)の厚さ(Z)を決定
する第3の工程とを備えたことを特徴とする、常開型電
磁弁におけるバルブストローク調整方法。4. A housing body (2), a coil (6),
A housing (1) including a fixed core (8), a yoke body (3), and a valve seat support member (4), and a housing movably disposed on the opposite side of the valve seat support member (4) across the fixed core (8). A movable core (12) which is provided and is attracted to the fixed core (8) by excitation of the coil (6); and an elastic biasing means for biasing the movable core (12) in a direction away from the fixed core (8). (1
5) a valve rod (13) having a valve body (13a) that can be seated on a valve seat (14) provided on a valve seat support member (4) and connected to a movable core (12); A bearing plate (16) is provided between the body (3) and the valve seat support member (4) or between the fixed core (8) and the valve seat support member (4) to guide the valve rod (13). In the normally-open type solenoid valve, a valve stroke formed between the tip of the valve body (13a) and the tip of the valve seat (14) when the valve body (13a) is separated from the valve seat (14). A valve stroke adjusting method for determining the thickness (Z) of the bearing plate (16) in order to adjust VS) to a predetermined size, wherein the fixed core (8) contacts one end surface of the bearing plate (16). ) or yoke body (first reference surface 3) (P 5) a valve body (13a)
A first step of measuring a first distance (H) between the front end of the valve seat and a second reference surface (P 6 ) of the valve seat support member (4) with which the other end surface of the bearing plate (16) abuts. A second step of measuring a second distance (J) between the end of the valve seat (14) and the valve stroke (VS) based on the first and second distances (H, J) and the valve stroke (VS). A third step of determining the thickness (Z) of the bearing plate (16).
に弁体(13a)と同一の曲率半径を有する球体(1
8)を載置し、球体(18)の頂点と前記第2基準面
(P6 )との間の第3の距離(I)を測定し、第3の距
離(I)と球体(18)の直径(d)とに基づいて前記
第2の距離(J)を求めることを特徴とする、請求項4
記載の常開型電磁弁におけるバルブストローク調整方
法。5. In the second step, the valve seat (14)
The spherical body (1) having the same radius of curvature as the valve body (13a)
8) is placed, a third distance (I) between the vertex of the sphere (18) and the second reference plane (P 6 ) is measured, and the third distance (I) and the sphere (18) are measured. The second distance (J) is determined based on a diameter (d) of the second distance.
A valve stroke adjusting method for the normally-open solenoid valve described in the above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5173277A JP3016056B2 (en) | 1993-07-13 | 1993-07-13 | Air gap adjustment method for normally closed solenoid valve and air gap and valve stroke adjustment method for normally open solenoid valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5173277A JP3016056B2 (en) | 1993-07-13 | 1993-07-13 | Air gap adjustment method for normally closed solenoid valve and air gap and valve stroke adjustment method for normally open solenoid valve |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0727246A JPH0727246A (en) | 1995-01-27 |
JP3016056B2 true JP3016056B2 (en) | 2000-03-06 |
Family
ID=15957472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5173277A Expired - Fee Related JP3016056B2 (en) | 1993-07-13 | 1993-07-13 | Air gap adjustment method for normally closed solenoid valve and air gap and valve stroke adjustment method for normally open solenoid valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3016056B2 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19826578A1 (en) * | 1998-06-15 | 1999-12-16 | Mannesmann Rexroth Ag | Calibration procedure |
JP6068807B2 (en) * | 2012-03-06 | 2017-01-25 | 株式会社不二工機 | solenoid valve |
WO2019102909A1 (en) * | 2017-11-22 | 2019-05-31 | イーグル工業株式会社 | Solenoid valve |
WO2019102908A1 (en) * | 2017-11-22 | 2019-05-31 | イーグル工業株式会社 | Solenoid valve |
KR102074815B1 (en) | 2018-09-11 | 2020-02-10 | 에코플라스틱 주식회사 | Floor console mounting structure of car |
-
1993
- 1993-07-13 JP JP5173277A patent/JP3016056B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0727246A (en) | 1995-01-27 |
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