JPS622371Y2 - - Google Patents
Info
- Publication number
- JPS622371Y2 JPS622371Y2 JP19632583U JP19632583U JPS622371Y2 JP S622371 Y2 JPS622371 Y2 JP S622371Y2 JP 19632583 U JP19632583 U JP 19632583U JP 19632583 U JP19632583 U JP 19632583U JP S622371 Y2 JPS622371 Y2 JP S622371Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- receiving area
- pressure
- pressure receiving
- chamber
- 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
- 230000004044 response Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
Landscapes
- Safety Valves (AREA)
Description
【考案の詳細な説明】
本考案は一般産業機械に使用される流体圧制御
弁、特に油圧または空圧制御弁であるチエツク付
シーケンス弁の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a fluid pressure control valve used in general industrial machinery, particularly a sequence valve with a check, which is a hydraulic or pneumatic control valve.
（背景技術）
従来のチエツク付シーケンス弁は、通常バルブ
の構造的には、シーケンス作用を行うシーケンス
バルブと、逆流をさせる為のチエツク弁とから構
成されている。即ち、メイン流量を制御する主弁
２ケから構成されている。小流量用バルブとして
は、２ケの主弁で構成していても、スペース、コ
ストの面で、さほど問題は生じないが、大流量の
バルブを構成する場合には、非常に不利になる。
この問題を解決するには、メイン流量を制御する
主弁を１ケだけ用いて構成する方法が必要であつ
た。(Background Art) A conventional sequence valve with a check is generally constructed of a sequence valve for performing a sequence action and a check valve for reverse flow. That is, it is composed of two main valves that control the main flow rate. As a valve for a small flow rate, even if it is configured with two main valves, there is no problem in terms of space and cost, but when a valve for a large flow rate is configured, it is very disadvantageous.
To solve this problem, a method was required in which only one main valve was used to control the main flow rate.
（考案の目的）
本考案は１ケの主弁と複数ケのパイロツトバル
ブを用いて、チエツク付シーケンス弁を構成する
ことを目的とする。(Purpose of the invention) The object of the invention is to construct a sequence valve with a check using one main valve and a plurality of pilot valves.
本考案の他の目的は、従来の様に２ケの主弁を
１ケで構成することにより、コンパクトにするこ
とはもとより、それに伴うコストダウン及び応答
性の向上が期待できるようなチエツク付シーケン
ス弁を提供することにある。 Another purpose of the present invention is to reduce the size of the valve by configuring it into one instead of the conventional two main valves, as well as to create a check sequence system that is expected to reduce costs and improve responsiveness. The purpose is to provide a valve.
（本考案の構成・効果）
このため本考案はバルブのIN側の受圧面積と
等しい受圧面積を有する背圧室および前記背圧室
の外周部にOUT側の受圧面積と等しい受圧面積
を有するパイロツト室を形成するように後端部に
小径部が形成された主弁と、主弁に設けられた
IN側と背圧室とを連通させるチヨークと、背圧
室内に入れられ主弁がOUT側に対してIN側を締
切るようにハウジングに対して押圧するスプリン
グと、背圧室とタンクとの間に介されたニードル
弁と、パイロツト室と連通されタンクとOUT側
との選択的接続を行う切換弁と、を有することを
特徴とするチエツク付シーケンス弁としたもので
ある。かかる簡単な構成によつて、主弁４、チヨ
ーク１６、スプリング５およびニードル弁９が協
働してシーケンス弁の働きをし、他方主弁４、パ
イロツト室１３および切換弁１０が協働してチエ
ツク弁としての働きをする。即ち主弁は１個でし
かも簡単かつコンパクトな構造であるからコスト
ダウンとなり、しかもシーケース弁としては従来
のバランスピストン形シーケンス弁に相当するの
で応答性は早く良好である。(Structure and effects of the present invention) Therefore, the present invention includes a back pressure chamber having a pressure receiving area equal to the pressure receiving area on the IN side of the valve, and a pilot having a pressure receiving area on the outer periphery of the back pressure chamber equal to the pressure receiving area on the OUT side. A main valve with a small diameter part formed at the rear end to form a chamber, and a
A spring that is inserted into the back pressure chamber and presses against the housing so that the main valve closes off the IN side from the OUT side, and a spring that communicates between the IN side and the back pressure chamber, and the back pressure chamber and the tank. This is a sequence valve with a check, characterized in that it has a needle valve interposed therebetween, and a switching valve that communicates with the pilot chamber and selectively connects the tank and the OUT side. With such a simple configuration, the main valve 4, the valve 16, the spring 5, and the needle valve 9 work together to function as a sequence valve, while the main valve 4, the pilot chamber 13, and the switching valve 10 work together to function as a sequence valve. Acts as a check valve. That is, since there is only one main valve and the structure is simple and compact, costs are reduced, and since the sea case valve corresponds to a conventional balanced piston type sequence valve, the response is fast and good.
（実施例の説明）
以下本考案の一実施例につき、図面を参照して
説明すると、第１図において、バルブハウジング
１内には、IN側２通路とOUT側６通路とが、主
弁４と弁座３との係合により両流路の開閉が行わ
れるようにされている。主弁４のクラツキング圧
力を決めるスプリング５が背圧室１２内に入れら
れている。主弁４の受圧面積は、弁座３によつ
て、IN側受圧面積ＡAとOUT側受圧面積ＡBに分
けられている。主弁４は小径部１４をなし、受圧
面積は、その他端側で、背圧室１２の受圧面積Ａ
Dとパイロツト室１３の受圧面積ＡCに分けられて
いる。パイロツト室１３は、切換弁であるソレノ
イドバルブ１０によつて、ソレノイドバルブが
offのとき、流路７を通り、OUT側と連通してお
り、励磁することよりパイロツト室１３の油を流
路１１を通つてタンク１５へ開放する。又背圧室
１２からは、流路８を設けて、ニードル弁即ち針
弁９に連通し、針弁９の戻り側はドレン用流路１
１によりタンク１５につながつている。又主弁４
は、チヨーク１６を有しており、IN側と背圧室
を連通している。そして各受圧面積の関係はＡA
＝ＡD，ＡB＝ＡCとなる様に決められている。(Description of Embodiment) An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, in the valve housing 1, there are two passages on the IN side and six passages on the OUT side. Both channels are opened and closed by engagement between the valve seat 3 and the valve seat 3. A spring 5 that determines the cracking pressure of the main valve 4 is placed in the back pressure chamber 12. The pressure receiving area of the main valve 4 is divided by the valve seat 3 into an IN side pressure receiving area A A and an OUT side pressure receiving area A B. The main valve 4 has a small diameter portion 14, and the pressure receiving area is the pressure receiving area A of the back pressure chamber 12 at the other end side.
D and the pressure receiving area A of the pilot chamber 13. The pilot chamber 13 is operated by a solenoid valve 10 which is a switching valve.
When off, it communicates with the OUT side through the flow path 7, and when excited, the oil in the pilot chamber 13 is released through the flow path 11 into the tank 15. A flow path 8 is provided from the back pressure chamber 12 to communicate with a needle valve 9, and the return side of the needle valve 9 is connected to a drain flow path 1.
1 is connected to a tank 15. Also main valve 4
has a chi yoke 16 and communicates the IN side with the back pressure chamber. And the relationship between each pressure receiving area is A A
= A D , A B = A C .
次に作動状態について説明すると、本バルブで
は、ソレノイドバルブがoffの状態でIN側から
OUT側へ油を流す場合にシーケンス作動をし、
ソレノイドバルブがONの状態でOUT側からIN側
へ油を流す、チエツク弁の働きをする。まず、シ
ーケンス作動について説明する。IN側２の圧力
が、針弁９で調整された圧力になるまではIN側
の圧力と背圧室１２の圧力は同値であり、主弁４
はスプリング５の力により、下方に押しつけられ
閉じている。更に圧力が上昇し針弁９で調整され
た圧力以上になると、針弁が開き、油は流路１１
を通つてタンク１５へ流れる。針弁９から油が流
れることによりチヨーク１６の前後に差圧が生
じ、その差圧とスプリング力とがバランスするま
で主弁４は上へ移動することになる。本作動は従
来のバランスピストン形シーケンスバルブの作動
と同じである。又、ソレノイドバルブがoffの状
態では、OUT側６からIN側２へは油は流れな
い。何故なら受圧面積にはＡB＝ＡCの関係がある
為、OUT側の圧力によつて主弁４を上方へ押し
上げる力が発生しないからである。 Next, to explain the operating state, with this valve, when the solenoid valve is off,
Sequence operation is performed when oil flows to the OUT side,
Acts as a check valve, allowing oil to flow from the OUT side to the IN side when the solenoid valve is ON. First, sequence operation will be explained. Until the pressure on the IN side 2 reaches the pressure adjusted by the needle valve 9, the pressure on the IN side and the pressure in the back pressure chamber 12 are the same value, and the pressure on the main valve 4
is pressed downward and closed by the force of the spring 5. When the pressure increases further and exceeds the pressure adjusted by the needle valve 9, the needle valve opens and the oil flows into the flow path 11.
through which it flows to tank 15. As oil flows from the needle valve 9, a pressure difference is generated before and after the choke 16, and the main valve 4 moves upward until the pressure difference and the spring force are balanced. This operation is the same as that of a conventional balanced piston type sequence valve. Furthermore, when the solenoid valve is off, oil does not flow from the OUT side 6 to the IN side 2. This is because the pressure-receiving area has the relationship A B = A C , so no force is generated to push the main valve 4 upward due to the pressure on the OUT side.
次にOUT側６からIN側２へ油を流す場合は次
の様になる。ソレノイドバルブをONすると受圧
面積部ＡCはタンク圧となるのでOUT側の圧力が
上昇した場合、OUT側に作用する圧力（ＰBとす
ると）が受圧面積ＡBに作用することになりこの
力（ＰB×ＡB）がスプリング力より大きくなると
主弁４を押し上げOUT側からIN側へ油が流れる
ことになる。即ち、一般的なチエツク弁の働きと
なる。 Next, when oil flows from OUT side 6 to IN side 2, it will be as follows. When the solenoid valve is turned ON, the pressure receiving area A C becomes the tank pressure, so if the pressure on the OUT side increases, the pressure acting on the OUT side (assuming P B ) acts on the pressure receiving area A B , and this force When (P B ×A B ) becomes larger than the spring force, the main valve 4 is pushed up and oil flows from the OUT side to the IN side. In other words, it functions as a general check valve.
以上の様に、切換弁により受圧面積ＡCのパイ
ロツト室１３の圧油をOUT側に連通させるか、
タンクに連通するかの切換によつて、主弁４１ケ
でチエツク付シーケンスバルブの働きをさせるこ
とができる。 As mentioned above, either the pressure oil in the pilot chamber 13 with the pressure receiving area A C is communicated to the OUT side by the switching valve, or
By switching whether or not they communicate with the tank, the 41 main valves can function as a sequence valve with a check.
更に第２図には、OUT側からIN側へ流すチエ
ツク弁の開き応答を早くする為に、小流量のチエ
ツクバルブ１８を追加している。 Furthermore, in FIG. 2, a check valve 18 with a small flow rate is added in order to speed up the opening response of the check valve that flows from the OUT side to the IN side.
チエツクバルブ１８を追加することにより主弁
４が開く時に、第１図では背圧室１２の油がチヨ
ーク１６を通つて流れるのに対し、第２図では、
追加したチエツクバルブ１８を通つても油が流れ
るので、主弁４の開き応答を早くすることができ
る。 By adding a check valve 18, when the main valve 4 is opened, the oil in the back pressure chamber 12 flows through the check yoke 16 in FIG. 1, whereas in FIG.
Since oil also flows through the additional check valve 18, the opening response of the main valve 4 can be made faster.
第１図と第２図は本考案のそれぞれ異る実施例
であるチエツク付シーケンス弁を示す断面構造図
である。
１……ハウジング、２……IN側、４……主
弁、５……スプリング、６……OUT側、９……
ニードル弁、１０……切換弁、１２……背圧室、
１３……パイロツト室、１４……小径部、１５…
…タンク、１６……チヨーク。
1 and 2 are cross-sectional structural views showing sequence valves with a check, which are different embodiments of the present invention. 1...Housing, 2...IN side, 4...Main valve, 5...Spring, 6...OUT side, 9...
Needle valve, 10...Switching valve, 12...Back pressure chamber,
13...Pilot chamber, 14...Small diameter section, 15...
...Tank, 16...Chiyoke.
Claims (1)
積ＡDを有する背圧室１２および前記背圧室の外
周部にOUT側６の受圧面積ＡBと等しい受圧面積
ＡCを有するパイロツト室１３を形成するように
後端部に小径部１４が形成された主弁４と、主弁
に設けられたIN側２と背圧室とを連通させるチ
ヨーク１６と、背圧室１２内に入れられ主弁４が
OUT側６に対してIN側２を締切るようにハウジ
ング１に対して押圧するスプリング５と、背圧室
とタンク１５との間に介されたニードル弁９と、
パイロツト室１３と連通されタンク１５とOUT
側との選択的接続を行う切換弁１０と、を有する
ことを特徴とするチエツク付シーケンス弁。 A back pressure chamber 12 having a pressure receiving area A D equal to the pressure receiving area A A on the IN side 2 of the valve, and a pilot chamber 13 having a pressure receiving area A C equal to the pressure receiving area A B on the OUT side 6 on the outer periphery of the back pressure chamber. a main valve 4 having a small diameter portion 14 formed at its rear end so as to form a small diameter portion 14; Main valve 4
a spring 5 that presses against the housing 1 so as to close off the IN side 2 from the OUT side 6; a needle valve 9 interposed between the back pressure chamber and the tank 15;
It communicates with the pilot chamber 13 and is connected to the tank 15 and OUT.
1. A sequence valve with a check, characterized in that it has a switching valve 10 that selectively connects to the side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19632583U JPS60103771U (en) | 1983-12-22 | 1983-12-22 | Sequence valve with check |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19632583U JPS60103771U (en) | 1983-12-22 | 1983-12-22 | Sequence valve with check |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60103771U JPS60103771U (en) | 1985-07-15 |
| JPS622371Y2 true JPS622371Y2 (en) | 1987-01-20 |
Family
ID=30421274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19632583U Granted JPS60103771U (en) | 1983-12-22 | 1983-12-22 | Sequence valve with check |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60103771U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019059136A1 (en) * | 2017-09-21 | 2019-03-28 | 株式会社コスメック | Sequence valve-attached cylinder device |
-
1983
- 1983-12-22 JP JP19632583U patent/JPS60103771U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019059136A1 (en) * | 2017-09-21 | 2019-03-28 | 株式会社コスメック | Sequence valve-attached cylinder device |
| JPWO2019059136A1 (en) * | 2017-09-21 | 2020-09-03 | 株式会社コスメック | Cylinder device with sequence valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60103771U (en) | 1985-07-15 |
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