JPS60125470A - Fluid force reducing structure of spool valve - Google Patents
Fluid force reducing structure of spool valveInfo
- Publication number
- JPS60125470A JPS60125470A JP23187283A JP23187283A JPS60125470A JP S60125470 A JPS60125470 A JP S60125470A JP 23187283 A JP23187283 A JP 23187283A JP 23187283 A JP23187283 A JP 23187283A JP S60125470 A JPS60125470 A JP S60125470A
- Authority
- JP
- Japan
- Prior art keywords
- notch
- angle
- land
- opening
- spool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、スプールに形成のノツチが開いたときの油
の流出入により、当該スプールに対してそれを閉じる方
向に作用する流体力を軽減する構造に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure that reduces the fluid force acting on the spool in the direction of closing it due to the inflow and outflow of oil when a notch formed in the spool is opened.
（従来の構造）
第１図は、本出願人がすでに出願した流体力軽減構造を
示したもので、この従来の構造は、スプールｌのランド
２の端面３から、この端面３を横切り、かつその軸断面
を外して切込みを入れてノツチａを形成するとともに、
このノツチａは、軸線ｇ−ｈに対して、角θ１だけ傾斜
させている。(Conventional Structure) FIG. 1 shows a fluid force reduction structure that the present applicant has already applied for. Remove the axial section and make a notch to form a notch a,
This notch a is inclined by an angle θ1 with respect to the axis gh.
しかして、スプールｌに作用する当該流体力Ｆは、Ｆ＝
ρＱＶｃｏＳθによってめられる。Therefore, the fluid force F acting on the spool l is F=
It is determined by ρQVcoSθ.
ただし、上記式において、ρは作動油の密度、■は流速
、Ｑは流量、θは軸線に対する流出角度である。However, in the above equation, ρ is the density of the hydraulic oil, ■ is the flow velocity, Q is the flow rate, and θ is the outflow angle with respect to the axis.
この式からも明らかなように、流体力Ｆを小さくするた
めには、結局、上記流出角θを大きくすればよいことに
なる。As is clear from this equation, in order to reduce the fluid force F, it is sufficient to increase the above-mentioned outflow angle θ.
そこで、上記従来の構造において、当該ノツチａからの
油の流出方向は、軸線ｇ−ｈに対して水平方向に角度θ
１だけずれた線ｇ−３から、角度θ２だけ立ち上がるこ
とになる。Therefore, in the above conventional structure, the direction of oil flowing out from the notch a is at an angle θ in the horizontal direction with respect to the axis gh.
It rises by an angle θ2 from the line g-3 which is shifted by 1.
したがって、点ｋから線ｇ−ｈに直交する線に−１を引
いたときの三角形ｇｋＩＬの角θが、軸線に対する流出
方向ｇ−にの見掛は上の角度ということになる。Therefore, the angle θ of the triangle gkIL obtained by subtracting -1 from the point k to the line orthogonal to the line gh is the apparent upper angle in the outflow direction g- with respect to the axis.
この見掛は上の流出角θは、上記軸線ｇ−ｈに沿って直
接流出させる場合よりも、大きな値になり、それだけ流
体力の軽減に役立つことになる。This apparent outflow angle θ has a larger value than that in the case of direct outflow along the axis gh, and this helps to reduce the fluid force.
しかしながら、この従来のようにランド２の端面３を横
切り、しかも、軸断面を外して懐を深くしたノツチａを
形成した場合に、そのノツチ外側の残存部４の強度が損
なわれる。そのために、圧力が高くなったとき、上記残
存部４が変形して、当該スプールｌの摺動摩擦が大きく
なり、操作性が悪くなる欠点があった。また、残存部４
の強度が十分でないので、この従来の構造を高圧では使
えない欠点もあった。However, when the notch a is formed by crossing the end surface 3 of the land 2 and having a deeper pocket by removing the axial cross section as in the conventional method, the strength of the remaining portion 4 on the outside of the notch is impaired. Therefore, when the pressure becomes high, the remaining portion 4 is deformed and the sliding friction of the spool 1 increases, resulting in poor operability. In addition, the remaining part 4
Another disadvantage was that this conventional structure could not be used at high pressures because it was not strong enough.
（本発明の目的）
この発明は、流体力を軽減するとともに、高圧にも耐え
られるスプール弁の流体力軽減構造の提供を目的にする
。(Objective of the Present Invention) An object of the present invention is to provide a fluid force reduction structure for a spool valve that can reduce fluid force and withstand high pressure.
（本発明の実施例）
第２図〜第４図に示した第１実施例は、スプール１１の
ランド１２の端面１３から切削工具１４によって切込み
を入れ、ノツチｂを形成しているが、この点は、上記従
来と同様である。(Embodiment of the present invention) In the first embodiment shown in FIGS. 2 to 4, a notch b is formed by making a cut from the end surface 13 of the land 12 of the spool 11 with the cutting tool 14. The points are the same as the above conventional method.
そして、この実施例では、上記切削工具１４を、第３図
に示すように、スプール１１の軸線Ｘに対して、角度β
だけ傾けるとともに、第４図に示すように、軸断面中心
線Ｙに対しても角度αだけ傾けている。In this embodiment, the cutting tool 14 is moved at an angle β with respect to the axis X of the spool 11, as shown in FIG.
In addition, as shown in FIG. 4, it is also tilted by an angle α with respect to the axial cross-sectional center line Y.
切削工具１４を上記のように傾けて、ランド１２の端面
１３側から切込みを入れると、第２図に示すノツチｂが
形成されるが、このノツチｂは、上記端面１３側の開口
ｂ１が、上記中心線Ｙに対して角αだけ傾き、ランド１
２周面の開口ｂ２が、軸線Ｘに対して角βだけ傾くこと
になる。そして、このノツチｂの清面ｂ３は、上記開口
す五から開口ｂ２に向けて弧状をなすようにしている。When the cutting tool 14 is tilted as described above and a cut is made from the end surface 13 side of the land 12, a notch b shown in FIG. 2 is formed. Tilt by angle α with respect to the above center line Y, land 1
The opening b2 on the second circumferential surface is inclined with respect to the axis X by an angle β. The front surface b3 of this notch b forms an arc from the opening 5 toward the opening b2.
上記のようにしてノツチｂを形成すると、このノツチｂ
が開いたとき、開口ｂ１から開口ｂ２への流体の流出方
向は次のようになる。When notch b is formed as described above, this notch b
When the opening is opened, the direction of fluid flowing from the opening b1 to the opening b2 is as follows.
すなわち、開口ｂ２の傾斜角βのために、上記従来と同
様の理由により、軸線からこの傾斜角β分だけ水平方向
にずれた位置から、角度θ１を維持して立ち上がること
になるが、この実施例では、開口ｂ１も傾斜角αを保持
しているので、上記角度θｌからさらに角度αだけ水平
方向にずれた位置から立ち上がることになる。したがっ
て、その流出方向は、軸線Ｘに対して角度θを維持した
矢印１５で示す方向になり、その見掛は上の角度θを十
分に太きくとれる。That is, due to the inclination angle β of the opening b2, for the same reason as in the conventional case, the opening b2 stands up from a position horizontally shifted by the inclination angle β from the axis while maintaining the angle θ1. In the example, since the opening b1 also maintains the inclination angle α, it rises from a position further horizontally shifted by an angle α from the above-mentioned angle θl. Therefore, the outflow direction is the direction indicated by the arrow 15 maintaining the angle θ with respect to the axis X, and the apparent upper angle θ can be made sufficiently large.
つまり、この第１実施例では、当該ノツチｂの清面ｂ３
をさほど深くしなくても、その傾斜角α、βによって、
見掛は上の流出角を十分に大きくできるので、このノツ
チｂを形成した後の残存部の強度を十分に維持でき、そ
れだけ高圧にも酎えうることになる。That is, in this first embodiment, the front surface b3 of the notch b is
Even if it is not very deep, depending on the inclination angles α and β,
Since the apparent upper outflow angle can be made sufficiently large, the strength of the remaining portion after forming the notch b can be maintained sufficiently, and it can be used even under high pressure.
なお、この実施例のように、ノツチｂを軸線Ｘに対して
傾斜させた場合には、スプール１１に、それを回転させ
る流体力が作用する。そこで、スプールが回転しないよ
うにするためには、上記ノツチｂと対称形状にしたノツ
チｂ′を形成する必要がある。Incidentally, when the notch b is inclined with respect to the axis X as in this embodiment, a fluid force is applied to the spool 11 to rotate it. Therefore, in order to prevent the spool from rotating, it is necessary to form a notch b' symmetrical to the notch b.
第５図〜第８図に示した第２実施例は、当該ノツチＣの
形状を、上記第１実施例と多少相違させたものである。In the second embodiment shown in FIGS. 5 to 8, the shape of the notch C is slightly different from that of the first embodiment.
つまり、この第２実施例は、エンドミル等の切削工具１
４を、上記第１実施例と同様に、軸線Ｘ及び軸断面中心
線Ｙに対して、角度α及びβだけ傾けるとともに、第８
図に示すように、軸中心線Ｏに対しても、角度γだけ傾
けている。In other words, in this second embodiment, a cutting tool such as an end mill 1
4 is tilted by angles α and β with respect to the axis X and the axial section center line Y, and the
As shown in the figure, it is also inclined at an angle γ with respect to the axis center line O.
切削工具１４を上記のように傾斜させて、上記端面１３
側から切削して形成したノツチＣは、その端面１３側の
開口Ｃ１が角度αだけ傾き、ランド１２周面の開口Ｃ２
が角度βだけ傾くことになる。そして、このノツチＣの
清面Ｃ３は、第８図に示すように、ランド１２の周面に
向って、徐々に浅くなるとともに、そのランド１２側の
終端には、上記角度γを維持した傾斜面Ｃ４が維持され
る。By tilting the cutting tool 14 as described above, the end surface 13 is
In the notch C formed by cutting from the side, the opening C1 on the end surface 13 side is inclined by an angle α, and the opening C2 on the peripheral surface of the land 12 is inclined.
will be tilted by an angle β. As shown in FIG. 8, the clear surface C3 of this notch C gradually becomes shallower toward the circumferential surface of the land 12, and at the end on the land 12 side, the surface C3 is inclined at the angle γ. Plane C4 is maintained.
したがって、このノツチＣを通過する流体が、上記角度
α、βによって、その流出角を大きくすること上記第１
実施例と同様であるが、この第２実施例では、さらに上
記傾斜面Ｃ４によって、その流出方向が立ち上がること
になり、それだけ流体力の軽減に役立つ。Therefore, the fluid passing through this notch C increases its outflow angle by the angles α and β.
Although similar to the embodiment, in this second embodiment, the outflow direction is further raised due to the above-mentioned inclined surface C4, which helps to reduce the fluid force.
ただし、上記傾斜面Ｃ４がなくても、上記角度α、βを
維持すれば、従来に比べてその流体力の軽減効果が十分
に見込まれる。However, even without the inclined surface C4, if the angles α and β are maintained, a sufficient effect of reducing the fluid force can be expected compared to the conventional case.
なお、この第２実施例においても、第１実施例と同様に
、当該スプール１１に、それを回転させようとする流体
力が作用する。そこで、このノツチＣと対称形状のノツ
チＣ′を形成することによって、上記回転力が作用しな
いようにしなければならない。In this second embodiment as well, as in the first embodiment, a fluid force acts on the spool 11 to rotate it. Therefore, it is necessary to form a notch C' having a symmetrical shape with this notch C so that the above-mentioned rotational force does not act.
（本発明の構成）
この発明の構成は、スプールのランド端面からランド周
面にむけてノツチを形成したスプール弁において、この
ノツチの上記端面側の開口を、軸断面中心線に対して、
角度αを維持させ、ランド側の開口を、軸線に対して角
度βを維持させた点に特徴を有する。(Structure of the present invention) The structure of the present invention is such that in a spool valve in which a notch is formed from the land end face of the spool toward the land circumferential surface, the opening on the end face side of the notch is aligned with respect to the axial cross-sectional center line.
It is characterized in that the angle α is maintained, and the opening on the land side is maintained at the angle β with respect to the axis.
したがって、ノツチの端面側の開口から、ランド側の開
口に作動流体が流出するとき、その見掛は上の流出角が
大きくなる。Therefore, when the working fluid flows out from the opening on the end face side of the notch to the opening on the land side, the apparent upward outflow angle becomes large.
（本発明の効果）
この発明は、上記のように構成し、当該ノツチからの流
出角を大きくできるようにしたので、そのノツチの清面
をさほど深くしなくても、流体力の軽減効果を発揮でき
る。したがって、従来のように、ノツチを形成した後の
残存部の強度が弱くなることがなく、そのために高圧に
も耐えられるようになる。(Effects of the present invention) The present invention is configured as described above, and the outflow angle from the notch can be increased, so that the effect of reducing fluid force can be achieved without making the surface of the notch very deep. I can demonstrate it. Therefore, the strength of the remaining portion after forming the notch does not weaken as in the conventional case, and therefore it can withstand high pressure.
図面第１図は従来の要部斜視図、第２図〜第４図はこの
発明の第１実施例を示すもので、第２図は要部の斜視図
、第３図は同じく平面図、第４図は同じく断面図、第５
図〜第８図は第２実施例を示すもので、第５図は要部の
斜視図、第６図は同じく平面図、第７図は同じく断面図
、第８図は第６図のＢ−Ｂ線に沿って、第７図のＡ−Ａ
線方向に切断した断面図である。
１１・・φスプール、１２・・拳２ンド、１３・Φ・端
面、ｂ、ｃ・φ壷ノツチ、Ｊ、ｂ、２ｃ、、ｃ２ ・・
・開口。
代理人弁理士 嶋 宣之
１ グ
才２
乙
べ
図
才 ５ 図
才に四 オフ■Figure 1 is a perspective view of a conventional main part, Figures 2 to 4 show a first embodiment of the present invention, Figure 2 is a perspective view of the main part, and Figure 3 is a plan view. Figure 4 is also a sectional view, and Figure 5 is a cross-sectional view.
8 to 8 show the second embodiment, FIG. 5 is a perspective view of the main parts, FIG. 6 is a plan view, FIG. 7 is a sectional view, and FIG. 8 is a B of FIG. 6. - Along line B, A-A in FIG.
FIG. 3 is a cross-sectional view cut in a line direction. 11... φ spool, 12... fist 2nd, 13... φ end face, b, c, φ pot notch, J, b, 2c,, c2...
・Opening. Representative Patent Attorney Nobuyuki Shima 1 Gusai 2 Otobe Zusai 5 Zusai ni 4 Off■
Claims (1)
形成したスプール弁において、このノツチの上記端面側
の開口を、軸断面中心線に対して、角度αを維持させ、
ランド側の開口を、軸線に対して角度βを維持させたス
プール弁の流体力軽減構造。In a spool valve in which a notch is formed from the land end surface of the spool toward the land peripheral surface, the opening on the end surface side of the notch is maintained at an angle α with respect to the axial cross-sectional center line,
A spool valve fluid force reduction structure in which the opening on the land side maintains an angle β with respect to the axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23187283A JPS60125470A (en) | 1983-12-08 | 1983-12-08 | Fluid force reducing structure of spool valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23187283A JPS60125470A (en) | 1983-12-08 | 1983-12-08 | Fluid force reducing structure of spool valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60125470A true JPS60125470A (en) | 1985-07-04 |
| JPH0364745B2 JPH0364745B2 (en) | 1991-10-08 |
Family
ID=16930340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23187283A Granted JPS60125470A (en) | 1983-12-08 | 1983-12-08 | Fluid force reducing structure of spool valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60125470A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04224376A (en) * | 1990-12-26 | 1992-08-13 | Shimadzu Corp | Notch shape for spool and notch machining method |
| JPH05288279A (en) * | 1992-02-20 | 1993-11-02 | Sauer Inc | Spool valve |
| JPH0640533U (en) * | 1992-10-30 | 1994-05-31 | 株式会社島津製作所 | Notch shape of spool |
| EP1571181A2 (en) | 2004-02-24 | 2005-09-07 | Fuji Photo Film Co., Ltd. | Inorganic fine particle dispersion and manufacturing method thereof as well as image-recording material |
| EP1612054A1 (en) | 2004-07-02 | 2006-01-04 | Fuji Photo Film Co., Ltd. | Inkjet recording medium |
| JP2007309459A (en) * | 2006-05-19 | 2007-11-29 | Denso Corp | Solenoid valve |
| EP2020304A1 (en) | 2007-08-03 | 2009-02-04 | FUJIFILM Corporation | Ink jet recording medium |
| EP2055496A2 (en) | 2007-11-01 | 2009-05-06 | Fujifilm Corporation | Inkjet recording material |
| WO2010013582A1 (en) | 2008-07-30 | 2010-02-04 | 富士フイルム株式会社 | Ink-jet recording method |
| WO2010013529A1 (en) | 2008-07-30 | 2010-02-04 | 富士フイルム株式会社 | Ink-jet recording method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167969A (en) * | 1980-05-26 | 1981-12-23 | Kayaba Ind Co Ltd | Fluid power reducing structure of spool valve |
-
1983
- 1983-12-08 JP JP23187283A patent/JPS60125470A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167969A (en) * | 1980-05-26 | 1981-12-23 | Kayaba Ind Co Ltd | Fluid power reducing structure of spool valve |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04224376A (en) * | 1990-12-26 | 1992-08-13 | Shimadzu Corp | Notch shape for spool and notch machining method |
| JPH05288279A (en) * | 1992-02-20 | 1993-11-02 | Sauer Inc | Spool valve |
| JPH0640533U (en) * | 1992-10-30 | 1994-05-31 | 株式会社島津製作所 | Notch shape of spool |
| EP1571181A2 (en) | 2004-02-24 | 2005-09-07 | Fuji Photo Film Co., Ltd. | Inorganic fine particle dispersion and manufacturing method thereof as well as image-recording material |
| EP2130876A1 (en) | 2004-02-24 | 2009-12-09 | FUJIFILM Corporation | Inorganic fine particle dispersion and manufacturing method thereof as well as image-recording material |
| EP1612054A1 (en) | 2004-07-02 | 2006-01-04 | Fuji Photo Film Co., Ltd. | Inkjet recording medium |
| JP2007309459A (en) * | 2006-05-19 | 2007-11-29 | Denso Corp | Solenoid valve |
| JP4692384B2 (en) * | 2006-05-19 | 2011-06-01 | 株式会社デンソー | solenoid valve |
| EP2020304A1 (en) | 2007-08-03 | 2009-02-04 | FUJIFILM Corporation | Ink jet recording medium |
| EP2055496A2 (en) | 2007-11-01 | 2009-05-06 | Fujifilm Corporation | Inkjet recording material |
| WO2010013582A1 (en) | 2008-07-30 | 2010-02-04 | 富士フイルム株式会社 | Ink-jet recording method |
| WO2010013529A1 (en) | 2008-07-30 | 2010-02-04 | 富士フイルム株式会社 | Ink-jet recording method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0364745B2 (en) | 1991-10-08 |
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