JPH08219300A - Spool rotation preventing structure of spool valve - Google Patents

Spool rotation preventing structure of spool valve

Info

Publication number
JPH08219300A
JPH08219300A JP7042603A JP4260395A JPH08219300A JP H08219300 A JPH08219300 A JP H08219300A JP 7042603 A JP7042603 A JP 7042603A JP 4260395 A JP4260395 A JP 4260395A JP H08219300 A JPH08219300 A JP H08219300A
Authority
JP
Japan
Prior art keywords
spool
rotation
pin
hole
opening hole
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.)
Withdrawn
Application number
JP7042603A
Other languages
Japanese (ja)
Inventor
Hideo Terakoshi
秀夫 寺越
Toshifumi Okude
敏史 奥出
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nachi Fujikoshi Corp
Original Assignee
Nachi Fujikoshi Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nachi Fujikoshi Corp filed Critical Nachi Fujikoshi Corp
Priority to JP7042603A priority Critical patent/JPH08219300A/en
Publication of JPH08219300A publication Critical patent/JPH08219300A/en
Withdrawn legal-status Critical Current

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  • Magnetically Actuated Valves (AREA)
  • Sliding Valves (AREA)

Abstract

PURPOSE: To provide a spool rotation preventing structure of a spool valve which is small in the sliding resistance, simple in the structure, excellent in the working precision, miniaturized compact and inexpensive. CONSTITUTION: A chamfered part 6 parallel to the axis is provided on one end part of a spool 5 of a spool valve, an opening hole 3 concentrical with the spool fitting hole is provided on either surface of a body or a cover, and a rotation stopping member 8 which is semi-circular or semi-cylindrical where the axis of the spool is the center, the chord of the chamfered part is approximately the bottom side 9, and the peripheral wall of the opening hole is approximately the outer diameter 10, and the pin hole 11 is provided is locked to a body or a cover by a pin 7 between the opening hole and the spool chamfered part in a finely rotatable manner.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、スプールを用いて流
路を切換えるスプール弁型の電磁切換弁やパイロット切
換弁のスプール回転防止構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spool valve type electromagnetic switching valve for switching a flow path using a spool or a spool rotation preventing structure for a pilot switching valve.

【0002】[0002]

【従来の技術】従来この種のスプール弁においては、流
体力によりスプールが回転すると弁の切換性能が不安定
となったり、スプールの摩耗が促進したり、スプールの
ランド部の漏れが多くなることがあるため、スプールの
回転を機械的に防止しているものがある。例えば実開昭
64−46582号公報では、図5及び図6に示すよう
に、スプール51の片側の先端52を切欠円柱とし、そ
の形状に対応させて形成した切欠円孔53を有する回転
止めワッシャ54に嵌入し、更にその回転止めワッシャ
54に突起55を設け、その突起をカバー56に設けた
穴57に嵌合させることによりスプールの回転を防止し
ている。又、回転止めワッシャ54を、カバー56側に
保持するためにスプリング58が設けられている。
2. Description of the Related Art Conventionally, in this type of spool valve, when the spool is rotated by a fluid force, the switching performance of the valve becomes unstable, the abrasion of the spool is accelerated, and the leakage of the land portion of the spool increases. Therefore, there are some that mechanically prevent the rotation of the spool. For example, in Japanese Utility Model Laid-Open No. 64-46582, as shown in FIG. 5 and FIG. 6, a rotation stop washer having a notched circular hole 53 formed corresponding to the shape of the one end 52 of the spool 51 is a notched cylinder. The rotation of the spool is prevented by fitting the projection into the hole 54 formed in the cover 56, and fitting the projection 55 into the rotation washer 54. Further, a spring 58 is provided to hold the rotation washer 54 on the cover 56 side.

【0003】かかる構成において、スプール51は流体
により回転力を受けた状態で、軸方向に移動するが、切
欠嵌入部の52が回転止めワッシャ54の切欠円孔53
で回転方向には動かないようにされているのでスプール
が回転することがない。しかし、スプールが軸方向に移
動する際、スプール先端の切欠円柱は回転止めワッシャ
の切欠円孔内を接触しながら摺動する。このため、スプ
ール51はこの摺動抵抗により切換力を減少される。し
かし、電磁切換弁のスプールの切換力は余り大きくはな
く、また、パイロット切換弁でもパイロット圧を小さく
しておきたい場合に作動不良等の問題があった。
In such a structure, the spool 51 moves in the axial direction under the rotational force of the fluid, but the notch fitting portion 52 has the notch circular hole 53 of the rotation washer 54.
Since it is fixed so that it does not move in the rotation direction, the spool will not rotate. However, when the spool moves in the axial direction, the notched cylinder at the tip of the spool slides while contacting within the notched circular hole of the rotation washer. Therefore, the switching force of the spool 51 is reduced by this sliding resistance. However, the switching force of the spool of the electromagnetic switching valve is not so large, and there is a problem such as malfunction in the pilot switching valve when it is desired to keep the pilot pressure small.

【0004】そこで、できる限り摺動抵抗を減少させる
こが必要であるが、摺動抵抗力は、図7に示すように、
回転トルクT、接触力F、スプール軸心59と接触部6
0までの距離rとし、切欠円柱部の2箇所同時に接触し
ているとすれば、接触力Fは、F=T/(2×r)とな
る。従って、軸方向にスライドする場合の摺動抵抗Ff
は接触部での摩擦係数μとすると、Ff =μ×F×2、
即ち摺動抵抗は Ff=μT/rとなる。よって、摺動
抵抗を小さくするためには、接触部までの距離rを大き
くし、接触部の摩擦係数μを小さくすることが必要であ
る。
Therefore, it is necessary to reduce the sliding resistance as much as possible, but the sliding resistance force is as shown in FIG.
Rotational torque T, contact force F, spool shaft center 59 and contact portion 6
Assuming that the distance r is up to 0 and the two contact points of the notched cylindrical portion are in contact at the same time, the contact force F is F = T / (2 × r). Therefore, the sliding resistance F f when sliding in the axial direction
Is the friction coefficient μ at the contact portion, F f = μ × F × 2,
That is, the sliding resistance is F f = μT / r. Therefore, in order to reduce the sliding resistance, it is necessary to increase the distance r to the contact portion and reduce the friction coefficient μ of the contact portion.

【0005】[0005]

【発明が解決しようとする課題】しかし、距離rを大き
くするためには、スプールの先端の切欠円柱を大きくし
なければならないが、切欠円柱を大きくすると外径が大
きくなってしまう。また、接触部の摩擦係数μを小さく
するためには、摺動面の面粗さをよくすることと、加工
精度を上げなけらばならないが、回転止めワッシャに設
ける切欠円孔53の加工等は、構造が複雑なため、加工
精度を上げることが困難であるという問題があった。さ
らに、ワッシャ係止するためのスプリング58等の部材
を必要とし、構造的にも高価である等の問題があった。
However, in order to increase the distance r, the notched cylinder at the tip of the spool must be made large, but if the notched cylinder is made large, the outer diameter becomes large. Further, in order to reduce the friction coefficient μ of the contact portion, it is necessary to improve the surface roughness of the sliding surface and increase the machining accuracy, but it is necessary to machine the cutout circular hole 53 provided in the rotation washer. Has a problem that it is difficult to improve the processing accuracy because the structure is complicated. Further, there is a problem that a member such as a spring 58 for locking the washer is required, which is structurally expensive.

【0006】本発明は、かかる、摺動抵抗を小さくし、
回転を防止するとともに、構造をシンプルにし、加工精
度を上げ、小型、簡単、安価な構造のスプール弁のスプ
ール回転防止構造を提供することを目的とする。
The present invention reduces the sliding resistance,
It is an object of the present invention to provide a spool rotation preventing structure for a spool valve which prevents rotation, simplifies the structure, improves processing accuracy, and has a small, simple and inexpensive structure.

【0007】[0007]

【課題を解決するための手段】上記目的を達成するため
に、本発明においては、複数のポートを有する本体に挿
通されポート間を接続又は閉塞するためのスプールを有
するスプール弁において、スプールの一端部の軸に平行
な面取り部を設け、本体又はスプールの一端を覆い本体
に取り付けられるカバーのどちらか一方の面にスプール
嵌合穴に同心にされた開口穴を設ける。さらに、前記ス
プールの軸心を中心として前記面取り部の弦を略底辺と
し前記開口穴周壁を略外径とする半月又は蒲鉾形でピン
穴を有する回転止め材を前記開口穴と前記スプール面取
り部との間で本体又はカバーに微小回転可能にピンで係
止させる。
In order to achieve the above object, according to the present invention, a spool valve having a spool which is inserted into a main body having a plurality of ports to connect or block the ports is provided with one end of the spool. A chamfer is provided parallel to the axis of the part, and an opening hole concentric with the spool fitting hole is provided on either surface of the body or a cover that covers one end of the spool and is attached to the body. Further, a rotation stopping member having a pin hole in a half moon or a semi-cylindrical shape with the chord of the chamfer being substantially the base and the outer wall of the opening hole being substantially the outer diameter with the shaft center of the spool as the center is provided with the rotation stopping member and the spool chamfer It is locked to the main body or the cover with a pin so that it can be rotated slightly.

【0008】[0008]

【作用】スプールの一端部に設けられた軸に平行な面取
り部とピンで係止された半月又は蒲鉾形の回転止め材の
底辺とが、流体力によってスプールを回転させようとす
る回転力により接触し、回転止め材をピン回りに回転さ
せようとするが、回転止め材の外径は開口穴壁面に接触
してそれ以上回転しないので、スプールの回転力に抗し
てスプールの回転が防止される。スプールの面取り部の
距離が大きくできるので、スプールの軸心から接触部ま
での距離が大きくなり摺動抵抗が小さい。また、スプー
ル面取り部と回転止め材底辺部の接触部は簡単な形状な
ので加工がし易く、面粗度等がよくなり摩擦的抵抗も小
さい。従って、スプールへの摺動抵抗も小さい。また、
スプールの回転力をピンで直接受けるのではなく回転止
め材の外径と開口穴壁面で受けるようにするのでピンの
強度は小さいものでよい。
[Function] The chamfered portion parallel to the shaft provided at one end of the spool and the bottom of the half-moon or kamaboko-shaped anti-rotation member locked by the pin are rotated by the rotational force that tends to rotate the spool by the fluid force. It tries to rotate the anti-rotation material around the pin due to the contact, but the outer diameter of the anti-rotation material contacts the wall surface of the opening hole and does not rotate any more, so the rotation of the spool is prevented against the rotational force of the spool. To be done. Since the distance of the chamfered portion of the spool can be made large, the distance from the shaft center of the spool to the contact portion becomes large and the sliding resistance is small. Further, since the contact portion between the spool chamfered portion and the bottom portion of the rotation stopping material has a simple shape, it is easy to process, the surface roughness is improved, and the frictional resistance is small. Therefore, the sliding resistance on the spool is also small. Also,
Since the rotational force of the spool is not directly received by the pin but by the outer diameter of the rotation stopping member and the wall surface of the opening hole, the strength of the pin may be small.

【0009】[0009]

【実施例】本発明の第一実施例について、図面を参照し
て説明する。図1は本発明の第一実施例の電磁弁の縦断
面図、図2は図1のA−A線断面の要部拡大説明図、図
3はスプール回転時の説明図である。図1及び図2にお
いて、流体を接続するポートが設けられた本体1内に図
1でみて左右に摺動するスプール5がスプール嵌合穴2
に摺動可能に挿入されている。本体1の両側には可動鉄
心13を内蔵し円筒状のガイド部14と固定鉄心15と
閉止材16とが一体に形成されたソレノイドガイド17
がスプール嵌合穴2に同心に螺着され、このソレノイド
ガイドにコイル18、コイルカバー19が外挿され閉止
材16のねじ部20でナット21により螺着固定されて
いる。可動鉄心13とスプール5間にはガイドピン22
が設けられ、コイル18を通電することによって発生す
る磁力により可動鉄心13の本体方向への移動力がスプ
ールに伝達され流路を切り換えるようにされている。ス
プール5の両端にはスプリング23,24が設けられコ
イル18が通電されていないときはスプール5が中立位
置になるようにされている。25,26はOリング、2
7は手動で可動鉄心13を動かしスプール5を切換える
ためのプッシュピンである。なお、符号は片側にのみ付
し反対側については省略する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to the drawings. 1 is a longitudinal sectional view of a solenoid valve according to a first embodiment of the present invention, FIG. 2 is an enlarged explanatory view of a main part of a sectional view taken along the line AA of FIG. 1, and FIG. In FIGS. 1 and 2, a spool 5 that slides left and right as viewed in FIG. 1 has a spool fitting hole 2 in a main body 1 provided with a port for connecting a fluid.
It is slidably inserted in. A solenoid guide 17 in which a movable iron core 13 is built in on both sides of the main body 1 and a cylindrical guide portion 14, a fixed iron core 15, and a closing member 16 are integrally formed.
Is concentrically screwed into the spool fitting hole 2, the coil 18 and the coil cover 19 are externally fitted to this solenoid guide, and the threaded portion 20 of the closing member 16 is screwed and fixed by a nut 21. A guide pin 22 is provided between the movable iron core 13 and the spool 5.
The moving force of the movable core 13 in the main body direction is transmitted to the spool by the magnetic force generated by energizing the coil 18, and the flow path is switched. Springs 23, 24 are provided at both ends of the spool 5 so that the spool 5 is in a neutral position when the coil 18 is not energized. 25 and 26 are O-rings, 2
Reference numeral 7 is a push pin for manually moving the movable iron core 13 to switch the spool 5. The reference numerals are given to only one side and the other side is omitted.

【0010】本体の両端にソレノイドガイド17がねじ
込まれるねじ28の下穴3,29が設けられている。図
1でみて、スプール5の左端31には、スプール外径3
2に対し、一段径を落とした部分33を設けその外周部
に軸に平行な面取部6が設けられている。本体左端の下
穴(開口穴)3とスプール嵌合穴2間に本体ピン穴38
が設けられスプリングピン7が打ち込まれている。図2
に示すように、本体左端の下穴3を開口穴とし、この開
口穴3とスプール5の面取部6との間に蒲鉾形の回転止
め材8がピン穴11によりスプリングピン7で係止され
ている。蒲鉾形の回転止め材8の外径10は開口穴3の
内径34よりやや小さくされ、底辺9部は開口穴からス
プール面取り部6までの寸法よりやや小さくされ、回転
止め材8と開口穴及びスプール面取り部とは隙間を有す
るようにされている。スプリングピン7回りに回転止め
材8が微小回転できるようにスプリングピンとピン穴1
1間には隙間が設けられている。
Pilot holes 3 and 29 of a screw 28 into which the solenoid guide 17 is screwed are provided at both ends of the main body. As shown in FIG. 1, at the left end 31 of the spool 5, the spool outer diameter 3
2 is provided with a portion 33 having a reduced diameter by one step, and a chamfered portion 6 parallel to the axis is provided on the outer peripheral portion thereof. Between the pilot hole (opening hole) 3 at the left end of the main body and the spool fitting hole 2, the main body pin hole 38
Is provided and the spring pin 7 is driven in. Figure 2
As shown in FIG. 2, the pilot hole 3 at the left end of the main body is used as an opening hole, and a kamaboko-shaped anti-rotation member 8 is locked by the spring pin 7 by the pin hole 11 between the opening hole 3 and the chamfered portion 6 of the spool 5. Has been done. The outer diameter 10 of the kamaboko-shaped anti-rotation member 8 is made slightly smaller than the inner diameter 34 of the opening hole 3, and the bottom 9 part is made slightly smaller than the dimension from the opening hole to the spool chamfered portion 6, so that the anti-rotation member 8 and the opening hole There is a gap with the spool chamfer. The spring pin and the pin hole 1 so that the rotation stopper 8 can be finely rotated around the spring pin 7.
A gap is provided between the two.

【0011】なお、ねじ穴の下穴を開口穴として用いる
ようにしているので、図1で見て右側に示すスプリング
24のようにスプリングの外径を大きくすると回転止め
材8と干渉するので、左側に示す回転止め材側のスプリ
ング23は小径のものを用いている。
Since the prepared hole of the screw hole is used as the opening hole, if the outer diameter of the spring is increased like the spring 24 shown on the right side in FIG. 1, it interferes with the rotation stopper member 8. The spring 23 on the rotation stop member side shown on the left side has a small diameter.

【0012】次に、第一実施例の作用について説明す
る。図3に示すように、スプール5を流体力によって回
転させようとする回転力はスプールを矢印方向35に回
転させるが、スプールの面取り部6が回転止め材8の底
辺9に接触する。このため、回転止め材8はピン7の回
りに回転するが、回転止め材の外径が開口穴3の内径
(壁面)34に当接してそれ以上回転しない。従って、
スプール5はこれ以上回転することがない。また、スプ
ール5はこの状態で軸方向に摺動するが、スプールの接
触部38までの距離Rは、段差を設けた部分33の半径
であり、限りなくスプール外径32に近くできる。即
ち、従来の回転止めワッシャより接触部までの距離を充
分大きくすることができるので、摺動抵抗をより小さく
することができる。また、回転止め部材8は従来のねじ
28の下穴を開口穴3として使用でき何ら径方向や、軸
方向への寸法の増大を必要としない。
Next, the operation of the first embodiment will be described. As shown in FIG. 3, the rotational force to rotate the spool 5 by the fluid force causes the spool to rotate in the direction of the arrow 35, but the chamfered portion 6 of the spool contacts the bottom side 9 of the rotation stopper 8. Therefore, although the rotation stopping member 8 rotates around the pin 7, the outer diameter of the rotation stopping member contacts the inner diameter (wall surface) 34 of the opening hole 3 and does not rotate any more. Therefore,
The spool 5 cannot rotate any further. Further, although the spool 5 slides in the axial direction in this state, the distance R to the contact portion 38 of the spool is the radius of the stepped portion 33, and can be as close as possible to the spool outer diameter 32. That is, since the distance from the conventional rotation stop washer to the contact portion can be made sufficiently large, the sliding resistance can be made smaller. Further, the rotation stopping member 8 can use the prepared hole of the conventional screw 28 as the opening hole 3 and does not require any increase in size in the radial direction or the axial direction.

【0013】次に本発明の第二実施例について、図面を
参照して説明する。図4は本発明の第二実施例のパイロ
ットオペレート形方向切換弁の縦断面図である。第一実
施例おいては、電磁弁に本発明を適用した例を示した
が、第二実施例ではパイロットオペレート形方向切換弁
に本発明を適用したものを示す。本体101の上部に電
磁弁102を設け電磁弁からのパイロット圧を本体両側
に設けられたカバー103の連通路104を経てスプー
ル5の端面105に導きパイロット圧力によってスプー
ルを軸方向に摺動させることによって流路を切り換える
ものである。本発明の構成・作用については前述した第
一実施例と同様であるので同じ符号を付し説明を省略す
る。なお、図4においてはスプリングピン7、回転止め
材8がカバー側へ移動できる如く図示されているが、ス
プリングピンの回転止め材側端に鍔を設ける、回転止め
材の軸方向長さを長くする、スナップリングを設ける等
の手段により移動による脱落を防止するようにされてい
るのはいうまでもない。
Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a vertical sectional view of a pilot operated type directional control valve of a second embodiment of the present invention. In the first embodiment, the example in which the present invention is applied to the solenoid valve is shown, but in the second embodiment, the present invention is applied to the pilot operated type directional control valve. An electromagnetic valve 102 is provided above the main body 101, and pilot pressure from the electromagnetic valve is guided to the end surface 105 of the spool 5 through a communication passage 104 of a cover 103 provided on both sides of the main body to slide the spool in the axial direction by the pilot pressure. The flow path is switched by. The structure and operation of the present invention are the same as those of the first embodiment described above, so the same reference numerals are given and the description thereof is omitted. In FIG. 4, the spring pin 7 and the rotation stopping member 8 are illustrated so as to be movable toward the cover side. However, a collar is provided at the end of the spring pin on the rotation stopping member side to increase the axial length of the rotation stopping member. It goes without saying that the device is prevented from falling off due to movement by means such as provision of a snap ring.

【0014】なお、実施例においては、ピンにスプリン
グピン7を用い本体のピン穴38に嵌合固定させている
が、カバー側に固定するようにしてもよい。また、回転
止め材8のピン穴11とスプリングピン7とは隙間を設
け微小回転可能にさせているが、回転止め材のピン穴と
スプリングピンとは嵌着固定させ、本体又はカバー側の
ピン穴38とスプリングピンとの間に隙間を設け回転止
め材を微小回転可能にさせてもよい。
In the embodiment, the spring pin 7 is used as the pin and is fitted and fixed in the pin hole 38 of the main body, but it may be fixed to the cover side. Further, the pin hole 11 of the rotation stopping member 8 and the spring pin 7 are provided with a gap so as to be finely rotatable, but the pin hole of the rotation stopping member and the spring pin are fitted and fixed to each other, and the pin hole on the main body side or the cover side is fixed. A space may be provided between the spring 38 and the spring pin to allow the rotation stopping member to rotate minutely.

【0015】[0015]

【発明の効果】本発明においては、スプールの面取り部
と開口穴との間に隙間をもって半月又は蒲鉾形の回転止
め材を設けるようにしたので、スプール面取り部の接触
部までの距離を大きくすることができ、摺動抵抗の大幅
な低減が可能となり、さらに、回転止め材の底部、スプ
ールの面取り部とも単純な形状であり、かつ接触部分が
全て表面であり、加工精度(面粗さ)が容易に上げられ
摩擦抵抗が少なくできるので、摺動抵抗の小さい回転防
止機構を提供するものとなった。
According to the present invention, since a half-moon or kamaboko-shaped rotation stopping member is provided with a gap between the chamfered portion of the spool and the opening hole, the distance to the contact portion of the spool chamfered portion is increased. The sliding resistance can be significantly reduced, and the bottom of the rotation stopper and the chamfer of the spool have a simple shape, and all the contacting parts are surfaces, and the processing accuracy (surface roughness) Since it can be easily lifted and the frictional resistance can be reduced, a rotation preventing mechanism having a small sliding resistance is provided.

【0016】また、開口穴とスプール面取り部間に回転
止め材を設けるようにしたので、従来の寸法を大きくす
ることなく組付けられ、回転止め材の底部、スプールの
面取り部とも単純な形状であり加工が容易であるので、
構造がシンプルで小型、簡単、安価なものとなった。
Further, since the rotation stopper is provided between the opening hole and the spool chamfer, it can be assembled without increasing the conventional size, and the bottom of the rotation stopper and the chamfer of the spool have a simple shape. Since it is easy to process,
The structure is simple, small, easy, and inexpensive.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の第一実施例の縦断面図である。FIG. 1 is a vertical sectional view of a first embodiment of the present invention.

【図2】図1のA−A線断面の要部拡大説明図である。FIG. 2 is an enlarged explanatory view of a main part of a cross section taken along the line AA of FIG.

【図3】スプール回転時の説明図である。FIG. 3 is an explanatory diagram when a spool rotates.

【図4】本発明の第二実施例の縦断面図である。FIG. 4 is a vertical sectional view of a second embodiment of the present invention.

【図5】従来の回転防止機構の要部断面図である。FIG. 5 is a sectional view of a main part of a conventional rotation prevention mechanism.

【図6】図5のB−B線要部断面図である。FIG. 6 is a cross-sectional view of the principal part taken along the line BB of FIG.

【図7】従来のスプール回転時の説明図である。FIG. 7 is an explanatory diagram of conventional spool rotation.

【符号の説明】[Explanation of symbols]

1 本体 2 スプール嵌合穴 3 開口穴(下穴) 4 カバー 5 スプール 6 面取り部 7 ピン(スプリングピン) 8 回転止め材 9 底辺 10 外径 11 ピン穴 12 ポート 1 Main Body 2 Spool Fitting Hole 3 Opening Hole (Prepared Hole) 4 Cover 5 Spool 6 Chamfer 7 Pin (Spring Pin) 8 Rotation Stopper 9 Bottom 10 Outer Diameter 11 Pin Hole 12 Port

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 複数のポートを有する本体に挿通され前
記ポート間を接続又は閉塞するためのスプールを有する
スプール弁において、一端部に軸に平行な面取り部を有
するスプールと、前記本体又は前記スプールの一端を覆
い本体に取り付けられるカバーに設けられたスプール嵌
合穴に同心にされた開口穴と、前記スプールの軸心を中
心として前記面取り部の弦を略底辺とし前記開口穴周壁
を略外径とする半月又は蒲鉾形の回転止め材と、該回転
止め材にあけられたピン穴に挿入され回転止め材を前記
本体又は前記カバーに設けられた前記開口穴と前記スプ
ール面取り部との間で微小回転かつ係止可能にさせるピ
ンと、を有することを特徴とするスプール弁のスプール
回転防止構造。
1. A spool valve having a spool which is inserted into a main body having a plurality of ports to connect or close the ports, and a spool having a chamfered portion parallel to an axis at one end, and the main body or the spool. An opening hole that is concentric with a spool fitting hole provided in a cover that covers one end of the main body, and the chord of the chamfer is substantially the base of the center of the spool axial center, and the opening hole peripheral wall is substantially outside. Between a half-moon or kamaboko-shaped anti-rotation material having a diameter, and the anti-rotation material inserted into a pin hole formed in the anti-rotation material between the opening hole provided in the main body or the cover and the spool chamfered portion. A spool rotation preventing structure for a spool valve, comprising: a pin for enabling minute rotation and locking.
JP7042603A 1995-02-08 1995-02-08 Spool rotation preventing structure of spool valve Withdrawn JPH08219300A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7042603A JPH08219300A (en) 1995-02-08 1995-02-08 Spool rotation preventing structure of spool valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7042603A JPH08219300A (en) 1995-02-08 1995-02-08 Spool rotation preventing structure of spool valve

Publications (1)

Publication Number Publication Date
JPH08219300A true JPH08219300A (en) 1996-08-27

Family

ID=12640631

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7042603A Withdrawn JPH08219300A (en) 1995-02-08 1995-02-08 Spool rotation preventing structure of spool valve

Country Status (1)

Country Link
JP (1) JPH08219300A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017003100A (en) * 2015-06-16 2017-01-05 日立建機株式会社 Spool valve device
JP2019100400A (en) * 2017-11-30 2019-06-24 日本電産トーソク株式会社 Valve device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017003100A (en) * 2015-06-16 2017-01-05 日立建機株式会社 Spool valve device
JP2019100400A (en) * 2017-11-30 2019-06-24 日本電産トーソク株式会社 Valve device

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Effective date: 20020507