JPS6338775A - Pressure operation type changeover valve - Google Patents
Pressure operation type changeover valveInfo
- Publication number
- JPS6338775A JPS6338775A JP17683686A JP17683686A JPS6338775A JP S6338775 A JPS6338775 A JP S6338775A JP 17683686 A JP17683686 A JP 17683686A JP 17683686 A JP17683686 A JP 17683686A JP S6338775 A JPS6338775 A JP S6338775A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pressure
- spring
- pistons
- inlet
- 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
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、ハウジングに入口ポート及び出口ポートを
それぞれ形成するとともに、ハウジング内に設けた第１
及び第２の弁通路をそれぞれ第１及び第２の弁体と第１
及び第２の弁座とで開閉可能に構成し、第１の弁座がハ
ウジングの孔内に密封状態で嵌合されかつばねの力に抗
して移動可能である第１ピストンの端面に形成されてい
る、特にスリップコントロール付液圧式車両ブレーキシ
ステム用の圧力作動形切換弁に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides an inlet port and an outlet port formed in a housing, and a first port provided in the housing.
and the second valve passage respectively to the first and second valve bodies and the first valve passage.
and a second valve seat, the first valve seat is formed on the end surface of the first piston, the first valve seat being fitted in the hole of the housing in a sealed state and movable against the force of the spring. The present invention relates to a pressure-operated switching valve, in particular for a hydraulic vehicle brake system with slip control.
［従来の技術］
西独公同公報第３３ ２８ １０４号から公知である切
換弁の場合、その時々の入口圧力に影響されて一方の入
日ポートが他方の入口ポートに、もしくは他方の入口ポ
ートが出口ポートに接続される。[Prior Art] In the case of the switching valve known from West German Publication No. 33 28 104, one inlet port becomes the other inlet port or the other inlet port becomes the other inlet port depending on the current inlet pressure. Connected to the exit port.
［発明が解決しようとする問題点］
この発明の目的は、２つの入口圧力のうち高圧側の入口
圧力が所定の値を越えると、その高圧側の入口圧力を出
口ポートへ伝達する切換弁を提供することにある。[Problems to be Solved by the Invention] An object of the present invention is to provide a switching valve that transmits the high-pressure side inlet pressure to the outlet port when the high-pressure side of the two inlet pressures exceeds a predetermined value. It is about providing.
［問題点を解決するための手段］
第２の弁座は、ハウジングの孔内に凹封状態で嵌合され
かつばねの力に抗して移動可能である第２ピストンの端
面に形成されており、前記ばねは第１及び第２ピストン
の間に配置されており、これら第１及び第２ピストンは
第１及び第２の弁通路を構成する第１及び第２の共軸孔
をそれぞれ有してなり、前記両共軸孔とばね内にバーを
移動自在に挿通し、第１及び第２の弁通路が閉じている
状態で、前記バーの長さは第１及び第２の弁体の間隔よ
りもいくらか短く、第１及び第２の弁座は、ばねとは反
対側の第１及び第２ピストン端面に形成されており、前
記第１及び第２の弁体はハウジング孔の端壁において支
持され、且つ、それぞれハウジング孔の入口室に配置さ
れており、前記ばねは出口ポートに接続した出口空白に
配置されており、第１及び第２ピストンにおける入口圧
力Ｐ１及びＰ２は第１及び第２ピストンの環状受圧面Ａ
１及びＡ２にかかる際、両弁通路が閉じている状態で、
ばねの力をＦとすると、所定の入口圧力Ｐ１ｖ及びＰ２
ｖにＰｌｖ−ＡＩ −Ｐ２ｖ−Ａ２ ＝ Ｆという関係
が成立つことにより、上記の目的が速成される。[Means for Solving the Problem] The second valve seat is formed on an end surface of the second piston that fits in the hole of the housing in a concave sealing manner and is movable against the force of a spring. and the spring is disposed between first and second pistons, the first and second pistons having first and second coaxial holes defining first and second valve passages, respectively. A bar is movably inserted into both coaxial holes and the spring, and when the first and second valve passages are closed, the length of the bar is equal to the length of the first and second valve bodies. the first and second valve seats are formed on the first and second piston end faces opposite to the spring, and the first and second valve bodies are formed on the ends of the housing bore. supported in the wall and respectively disposed in the inlet chamber of the housing bore, said spring being disposed in the outlet space connected to the outlet port, the inlet pressures P1 and P2 at the first and second pistons being equal to the first and second pistons; and the annular pressure receiving surface A of the second piston.
1 and A2, with both valve passages closed,
If the spring force is F, then the predetermined inlet pressures P1v and P2
By establishing the relationship Plv-AI-P2v-A2=F in v, the above objective can be achieved quickly.
入口圧力Ｐ１が所定の入口圧力ｐ１ｖを越えかつ入口圧
力Ｐ２よりも大きい場合、この入口圧力Ｐ１は出口ポー
トへ伝達される。また逆に、入口圧力Ｐ２が所定の入口
圧力Ｐ２ｖを越えかつ入口圧力Ｐ１よりも大きい場合、
入口圧力Ｐ２は出口ポートへ伝達される。この場合、２
つの弁体、２つのピストン、１つのばね及び１本のバー
のみで作動がなされる。If the inlet pressure P1 exceeds the predetermined inlet pressure p1v and is greater than the inlet pressure P2, this inlet pressure P1 is transmitted to the outlet port. Conversely, if the inlet pressure P2 exceeds the predetermined inlet pressure P2v and is greater than the inlet pressure P1,
Inlet pressure P2 is transmitted to the outlet port. In this case, 2
Actuation is accomplished with only one valve body, two pistons, one spring and one bar.
バーの横断面はほぼ７字形であってもよい。この場合、
バーの材料は少なくて済む。バーは、７字形であっても
、ピストン孔内を案内され、その都度送られて来る圧液
をスムーズに通過させることが出来る。狭い製作公差も
必盟でない。The cross-section of the bar may be approximately figure 7-shaped. in this case,
Bars require less material. Even if the bar is shaped like a 7, it is guided inside the piston hole and allows the pressurized liquid sent each time to pass through smoothly. Tight manufacturing tolerances are also not a must.
第１及び第２の弁体が球として形成されることは好まし
い。球は、容易に製造される単純な市販の部材である。Preferably, the first and second valve bodies are formed as spheres. The sphere is a simple commercially available component that is easily manufactured.
球形の第１及び第２の弁体はそれぞれ保持器内に取付け
られている。この保持器は、第１及び第２の弁体と第１
及び第２の弁座とが相対的に半径方向にずれるのを防ぐ
。それは、ハウジング自体によって第１及び第２の弁体
を案内する必要がないようにするためであり、第１及び
第２の弁体と同様にハウジングも単純な構造であるよう
にするためである。The first and second spherical valve bodies are each mounted within a retainer. This retainer has first and second valve bodies and a first
and the second valve seat from relative displacement in the radial direction. This is so that there is no need to guide the first and second valve bodies by the housing itself, and so that the housing as well as the first and second valve bodies are of simple construction. .
ｐ １ｖ＝ ｐ ２ｖが成立つために第１及び第２ピス
トンが同一に、第１及び第２の弁体も同一に形成されて
いる。このことにより、切換弁の製造及び組立てが容易
になる。その理由は、２つの弁通路を形成するために同
一の部材を使用することが出来るからであり、部材の交
換も容易だからである。Since p 1v=p 2v holds true, the first and second pistons are formed identically, and the first and second valve bodies are also formed identically. This facilitates manufacturing and assembly of the switching valve. This is because the same member can be used to form the two valve passages, and the member can be easily replaced.
［実線例］ 以下、図面を参照して本発明の詳細な説明する。[Solid line example] Hereinafter, the present invention will be described in detail with reference to the drawings.
図示された切換弁は、カバー２付ハウジング１と、同一
の第１及び第２ピストン３．４と、同一の球形状をなし
た第１及び第２の弁体５．６と、第１及び第２の弁体５
，６のうちの一方を収容し半径方向フランジ９を有する
スリーブ形の保持器７．８と、圧縮ばね１０と、バー１
１とから成る。The illustrated switching valve has a housing 1 with a cover 2, identical first and second pistons 3.4, first and second valve bodies 5.6 having the same spherical shape, and first and second valve bodies 5.6. Second valve body 5
, 6 and having a radial flange 9, a compression spring 10 and a bar 1.
Consists of 1.
部材３乃至１１は、ハウジング孔１２内に軸方向に移動
可能に取付けられている。第１及び第２ピストン３，４
はＯリング１３．１４によってハウジング孔１２に対し
密封されている。Members 3 to 11 are mounted in housing bore 12 so as to be axially movable. First and second pistons 3, 4
are sealed to the housing bore 12 by O-rings 13,14.
第１及び第２ピストン３．４を１通する共軸孔１５．１
６は互いに同軸上にあり、この共軸孔１５．１６内に、
バー１１が軸方向に移動可能に取付けられている。共軸
孔１５．１６の内周縁部は第１及び第２の弁座１７．１
８として形成され、この第１及び第２の弁座１７．１８
はそれぞれ第１及び第２の弁体５，６の一方と協働して
一方の弁通路を開閉する。Coaxial hole 15.1 through which the first and second pistons 3.4 pass
6 are coaxial with each other, and in this coaxial hole 15.16,
A bar 11 is mounted so as to be movable in the axial direction. The inner peripheral edge of the coaxial hole 15.16 is connected to the first and second valve seats 17.1.
8, the first and second valve seats 17.18
each cooperate with one of the first and second valve bodies 5 and 6 to open and close one of the valve passages.
ばね１０は、ばね端部を収容する凹部を備え、互いに対
向する第１及び第２ピストン３，４の端面において支持
され、バー１１を螺旋状に取囲ｌυでいる。The spring 10 has a recess for accommodating the spring end, is supported at the end faces of the first and second pistons 3 and 4 facing each other, and surrounds the bar 11 in a helical manner lυ.
第２図に図示するように、バー１１の横断面はほぼＹ字
形であるので、バー１１は共軸孔１５゜１６内に３つの
軸方向流路を形成する。第１図に図示するように、第１
及び第２の弁通路が閉じている場合、バー１１の長さは
第１及び第２の弁体５．６の［コ隔よりもいくらか短い
。As shown in FIG. 2, the bar 11 has a generally Y-shaped cross-section so that the bar 11 forms three axial passages within the coaxial bores 15 and 16. As shown in FIG.
and when the second valve passage is closed, the length of the bar 11 is somewhat shorter than the distance between the first and second valve bodies 5.6.
ハウジング壁を半径方向に貫通する孔として形成された
入口ポート１９．２０は、それぞれ入口室２１．２２に
接続している。入口’５２１．２２内には、第１及び第
２の弁体５．６と保持器７゜８とが配置されている。出
口室２３は、出口ポート２４を介して、圧力室（図示な
し）、例えば、液圧式車両用ブレーキシステムのホイー
ルブレーキシリンダの作動室に接続している。Inlet ports 19.20, which are formed as holes extending radially through the housing wall, each connect to an inlet chamber 21.22. A first and second valve body 5.6 and a retainer 7.8 are arranged in the inlet '521.22. The outlet chamber 23 is connected via an outlet port 24 to a pressure chamber (not shown), for example the working chamber of a wheel brake cylinder of a hydraulic vehicle brake system.
カバー２は、一点鎖線で図示されたねじ２５によってハ
ウジング１に取付けられている。The cover 2 is attached to the housing 1 by screws 25 shown in dashed lines.
切換弁の作動中、入口圧力Ｐ１は入口ポート１９を介し
て入口室２１に伝達され、入口圧力Ｐ２は入口ポート２
０を介して入口室２２に伝達される。この場合、入口圧
力Ｐ１は、スリップコントロール付車両用ブレーキシス
テムのタンデム形マスクシリンダから得られたブレーキ
圧であり、入口圧力Ｐ２としてはブレーキシステムの被
制御圧を利用することも出来る。この場合、入口圧力Ｐ
１がタンデム形マスクシリンダから伝達されるか、もし
くは高圧側の被制御入口圧力Ｐ２がホイールブレーキシ
リンダへ伝達されることになる。During operation of the switching valve, inlet pressure P1 is transmitted to inlet chamber 21 via inlet port 19, and inlet pressure P2 is transmitted to inlet chamber 21 via inlet port 2.
0 to the inlet chamber 22. In this case, the inlet pressure P1 is the brake pressure obtained from the tandem mask cylinder of the vehicle brake system with slip control, and the controlled pressure of the brake system can also be used as the inlet pressure P2. In this case, the inlet pressure P
1 will be transmitted from the tandem mask cylinder, or the controlled inlet pressure P2 on the high side will be transmitted to the wheel brake cylinder.
例えば、出口圧力Ｐ３が出口室２３に存せず、入口圧力
Ｐ２も入口室２２に存しない場合、入口圧力Ｐ１が入口
室２１に生じると、この入口圧力Ｐ１は、第２ピストン
４が第２の弁体６をカバー２へ押し当てるまで、すべて
の可動部材を右側へ移動させる。入口圧力Ｐ１が更に高
まり所定の圧力ｐ１ｖを越える場合、入口室２１を区画
する第１ピストン３の環状受圧面をＡ１とし、ばね１０
の力をＦとすると、Ｐｌｖ−ＡＩ −Ｆという関係が成
立つ。第１ピストン３がばね１０の力に抗して更に移動
させられて、第１の弁体５がバー１１によって第１の弁
座１７から離座し、入口室２１から出口’Ｊ２３への圧
液の流れが自由になる。次いで出口ポート２３に生じる
出口圧力Ｐ３の作用により、出口圧力Ｐ３が入口圧力Ｐ
１とほぼ同一になると、第１の弁体５と第１の弁座１７
の間の第１の弁通路が再び閉じられる。これに対して、
入口圧力Ｐ１と出口圧力Ｐ３がまだ存しないが、入口圧
力Ｐ２が生じ、この入口圧力Ｐ２が所定の圧力Ｐ２ｖを
越えると、出口ｖ２３へ伝達される。所定の圧力Ｐ２ｖ
を越える場合、入口室２２を区画する第２ピストン４の
環状受圧面をＡ２とすると、Ｐ２ｖ−Ａ２＝Ｆという関
係が成立つ。図示された実施例では環状受圧面Ａ１及び
Ａ２が同一であるので、所定の圧力ｐ１ｖ及びＰ２ｖも
同一である。For example, when the outlet pressure P3 does not exist in the outlet chamber 23 and the inlet pressure P2 does not exist in the inlet chamber 22, when the inlet pressure P1 occurs in the inlet chamber 21, this inlet pressure P1 All movable members are moved to the right until the valve body 6 is pressed against the cover 2. When the inlet pressure P1 increases further and exceeds the predetermined pressure p1v, the annular pressure receiving surface of the first piston 3 that partitions the inlet chamber 21 is designated as A1, and the spring 10
If the force of is F, then the relationship Plv-AI-F holds true. The first piston 3 is further moved against the force of the spring 10, and the first valve body 5 is unseated from the first valve seat 17 by the bar 11, and the pressure from the inlet chamber 21 to the outlet 'J23 is increased. The liquid will flow freely. Then, due to the action of the outlet pressure P3 generated at the outlet port 23, the outlet pressure P3 becomes the inlet pressure P.
1, the first valve body 5 and the first valve seat 17
The first valve passage between is closed again. On the contrary,
Although inlet pressure P1 and outlet pressure P3 do not yet exist, inlet pressure P2 is generated, and when this inlet pressure P2 exceeds a predetermined pressure P2v, it is transmitted to outlet v23. Predetermined pressure P2v
If the annular pressure receiving surface of the second piston 4 that partitions the inlet chamber 22 is A2, then the relationship P2v-A2=F holds true. In the illustrated embodiment, the annular pressure receiving surfaces A1 and A2 are identical, so that the predetermined pressures p1v and P2v are also the same.
入口圧力Ｐ１によって出口室２３で出口圧力Ｐ３が生起
された後、入口苗２２に入口圧力Ｐ２が生じる際、第２
の弁体６と第２の弁座１８の間の第２の弁通路は閉じた
状態にある。そして、入口圧力Ｐ２によりばね１０の力
に抗して第２ピストン４が移動されると、出口圧力Ｐ３
が生じて第２弁通路が開かれるので、入口圧力Ｐ２は出
口室２３へ伝達される。After the outlet pressure P3 is generated in the outlet chamber 23 by the inlet pressure P1, when the inlet pressure P2 is generated in the inlet seedling 22, the second
The second valve passage between the valve body 6 and the second valve seat 18 is in a closed state. When the second piston 4 is moved against the force of the spring 10 due to the inlet pressure P2, the outlet pressure P3
occurs and the second valve passage is opened, so that the inlet pressure P2 is transmitted to the outlet chamber 23.
第１及び第２ピストン３．４の環状受圧面Ａ１及びＡ２
が互いに異なるように第１及び第２ピストン３，４が異
なって形成されている場合、第１及び第２の弁通路が開
く。その理由は、所定の入口圧力Ｐ１ｖ及びＰ２ｖも、
第１及び第２ピストン３゜４に応じて異なっているから
である。Annular pressure receiving surfaces A1 and A2 of the first and second pistons 3.4
If the first and second pistons 3, 4 are configured differently, such that they differ from each other, the first and second valve passages are open. The reason is that the predetermined inlet pressures P1v and P2v also
This is because they differ depending on the first and second pistons 3.4.
第１図は、圧力作動形切換弁の部分軸方向断面図、第２
図は第１図の線：工−にに沿った横断面図である。
３・・・第１ピストン、４・・・第２ピストン、５・・
・第１の弁体、６・・・第２の弁体、７・・・保持器、
８・・・保持器、１０・・・ばね、１１・・・バー、１
２・・・ハウジング孔、１５・・・共軸孔、１６・・・
共軸孔、１７・・・第１の弁座、１８・・・第２の弁座
、２１・・・入口室、２２・・・入口室、２３・・・出
口室、２４・・・出口室、Ａ１ ・・・第１ピストンの
環状受圧面、Ａ２・・・第２ピストンの環状受圧面、Ｐ
ｌ ・・・入口圧力、Ｐ２・・・入口圧力、Ｐ１ｖ・・
・所定の入口圧力、Ｐ２ｖ・・・所定の入口圧力、Ｆ・
・・ばねの力。Figure 1 is a partial axial cross-sectional view of a pressure-operated switching valve;
The figure is a cross-sectional view taken along line 1 in Figure 1. 3...first piston, 4...second piston, 5...
・First valve body, 6... second valve body, 7... retainer,
8...Cage, 10...Spring, 11...Bar, 1
2...Housing hole, 15...Coaxial hole, 16...
Coaxial hole, 17... First valve seat, 18... Second valve seat, 21... Inlet chamber, 22... Inlet chamber, 23... Outlet chamber, 24... Outlet Chamber, A1... Annular pressure receiving surface of the first piston, A2... Annular pressure receiving surface of the second piston, P
l...Inlet pressure, P2...Inlet pressure, P1v...
・Predetermined inlet pressure, P2v...Predetermined inlet pressure, F・
...Spring force.
Claims (1)
形成するとともに、ハウジング内に設けた第１及び第２
の弁通路をそれぞれ第１及び第２の弁体と第１及び第２
の弁座とで開閉可能に構成し、第１の弁座がハウジング
の孔内に密封状態で嵌合されかつばねの力に抗して移動
可能である第１ピストンの端面に形成されている圧力作
動形切換弁において、 第２の弁座（１８）は、ハウジング孔（１２）内に密封
状態で嵌合されかつばね（１０）の力に抗して移動可能
である第２ピストン（４）の端面に形成されているとと
もに、前記ばね（１０）は第１及び第２ピストン（３、
４）の間に配置され、これら第１及び第２ピストン（３
、４）は第１及び第２の弁通路を構成する第１及び第２
の共軸孔（１５、１６）をそれぞれ有してなり、前記両
共軸孔（１５、１６）とばね（１０）内にバー（１１）
を移動自在に挿通し、第１及び第２の弁通路が閉じてい
る状態で、バー（１１）の長さは第１及び第２の弁体（
５、６）の間隔よりもいくらか短く設定され、第１及び
第２の弁座（１７、１８）はばね（１０）とは反対側の
第１及び第２ピストン（３、４）端面に形成されており
、前記第１及び第２の弁体（５、６）はハウジング孔（
１２）の端壁において支持され、且つ、それぞれハウジ
ング孔（１２）の入口室（２１；２２）に配置されてお
り、前記ばね（１０）は出口ポート（２４）に接続した
出口室（２３）内に配置されており、第１及び第２ピス
トンにおける入口圧力Ｐ１及びＰ２が第１及び第２ピス
トンの環状受圧面Ａ１及びＡ２にかかる際、第１及び第
２の弁通路が閉じている場合のばね（１０）の力をＦと
すると、所定の入口圧力Ｐ１ｖ及びＰ２ｖにＰ１ｖＡ１
＝Ｐ２ｖ・Ａ２＝Ｆという関係が成立つことを特徴とす
る圧力作動形切換弁。 ２、前記バー（１１）の横断面はほぼＹ字形であること
を特徴とする特許請求の範囲第１項記記の圧力作動形切
換弁。 ３、前記第１及び第２の弁体（５、６）は球であること
を特徴とする特許請求の範囲第１項記載の圧力作動形切
換弁。 ４、前記球（５、６）はそれぞれ保持器（７、８）内に
取付けられていることを特徴とする第３項記載の圧力作
動形切換弁。 ５、Ｐ１ｖ−Ｐ２ｖが成立つために前記第１及び第２ピ
ストン（３、４）は同一に、第１及び第２の弁体（５、
６）も同一に形成されていることを特徴する特許請求の
範囲第１項乃至第４項のいずれかの１つの項に記載の圧
力作動形切換弁。[Claims] 1. An inlet port and an outlet port are respectively formed in the housing, and first and second ports are provided in the housing.
The valve passages are connected to the first and second valve bodies and the first and second valve passages, respectively.
The first valve seat is configured to be openable and closable with a valve seat, and the first valve seat is formed on the end surface of the first piston which is fitted in a hole in the housing in a sealed state and is movable against the force of a spring. In the pressure-operated switching valve, the second valve seat (18) is fitted with a second piston (4) sealingly fitted in the housing bore (12) and movable against the force of the spring (10). ), and the spring (10) is formed on the end face of the first and second pistons (3,
4), and these first and second pistons (3
, 4) constitute the first and second valve passages.
coaxial holes (15, 16), and a bar (11) in both the coaxial holes (15, 16) and the spring (10).
is movably inserted through the bar (11), and when the first and second valve passages are closed, the length of the bar (11) is equal to the length of the first and second valve bodies (
5, 6), and the first and second valve seats (17, 18) are formed on the end faces of the first and second pistons (3, 4) opposite to the spring (10). The first and second valve bodies (5, 6) are located in the housing hole (
12) and are respectively arranged in the inlet chambers (21; 22) of the housing bore (12), said springs (10) being supported in the outlet chambers (23) connected to the outlet ports (24). and the first and second valve passages are closed when the inlet pressures P1 and P2 in the first and second pistons are applied to the annular pressure receiving surfaces A1 and A2 of the first and second pistons. If the force of the spring (10) is F, P1vA1 is given to the predetermined inlet pressures P1v and P2v.
A pressure-operated switching valve characterized in that the following relationship holds: =P2v・A2=F. 2. The pressure-operated switching valve according to claim 1, wherein the bar (11) has a substantially Y-shaped cross section. 3. The pressure-operated switching valve according to claim 1, wherein the first and second valve bodies (5, 6) are spheres. 4. The pressure-operated switching valve according to claim 3, characterized in that the balls (5, 6) are each mounted in a retainer (7, 8). 5. In order for P1v-P2v to hold true, the first and second pistons (3, 4) are the same as the first and second valve bodies (5,
6) is also formed in the same manner, the pressure-operated switching valve according to any one of claims 1 to 4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853527371 DE3527371C2 (en) | 1985-07-31 | 1985-07-31 | Pressure operated changeover valve |
| DE3527371.2 | 1985-07-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6338775A true JPS6338775A (en) | 1988-02-19 |
| JPH07103934B2 JPH07103934B2 (en) | 1995-11-08 |
Family
ID=6277237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61176836A Expired - Lifetime JPH07103934B2 (en) | 1985-07-31 | 1986-07-29 | Pressure operated switching valve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH07103934B2 (en) |
| DE (1) | DE3527371C2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0262172U (en) * | 1988-10-28 | 1990-05-09 | ||
| CN105179351A (en) * | 2015-09-28 | 2015-12-23 | 深圳市嘉润精密模具有限公司 | Plug-in mounting type maneuvering three-position and five-way reversing valve |
| US9657851B2 (en) | 2015-01-19 | 2017-05-23 | Nidec Tosok Corporation | Spool switching valve device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3839268C2 (en) * | 1988-11-21 | 1999-07-01 | Fte Automotive Gmbh | Hydraulic balancing valve |
| DE4311347A1 (en) * | 1993-04-06 | 1994-10-13 | Rexroth Mannesmann Gmbh | Directional control valve which in particular can be actuated electromagnetically |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2634743A (en) * | 1946-02-27 | 1953-04-14 | Audemar Pierre | Control valve mechanism |
| DE1500035B1 (en) * | 1965-05-03 | 1971-09-16 | Guttropf Walter Dipl Ing | Valve with two interlocking locking members that are adjustably arranged in a valve housing |
| BE791090A (en) * | 1971-11-16 | 1973-03-01 | Danfoss As | COMBINED VALVE FOR HYDRAULIC SYSTEMS |
| DE3328104A1 (en) * | 1983-08-04 | 1985-02-14 | Alfred Teves Gmbh, 6000 Frankfurt | BRAKE PRESSURE SENSOR |
-
1985
- 1985-07-31 DE DE19853527371 patent/DE3527371C2/en not_active Expired - Fee Related
-
1986
- 1986-07-29 JP JP61176836A patent/JPH07103934B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0262172U (en) * | 1988-10-28 | 1990-05-09 | ||
| US9657851B2 (en) | 2015-01-19 | 2017-05-23 | Nidec Tosok Corporation | Spool switching valve device |
| CN105179351A (en) * | 2015-09-28 | 2015-12-23 | 深圳市嘉润精密模具有限公司 | Plug-in mounting type maneuvering three-position and five-way reversing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3527371C2 (en) | 1994-05-11 |
| DE3527371A1 (en) | 1987-02-12 |
| JPH07103934B2 (en) | 1995-11-08 |
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