JPH0229331Y2 - - Google Patents
Info
- Publication number
- JPH0229331Y2 JPH0229331Y2 JP3644185U JP3644185U JPH0229331Y2 JP H0229331 Y2 JPH0229331 Y2 JP H0229331Y2 JP 3644185 U JP3644185 U JP 3644185U JP 3644185 U JP3644185 U JP 3644185U JP H0229331 Y2 JPH0229331 Y2 JP H0229331Y2
- Authority
- JP
- Japan
- Prior art keywords
- piston body
- port
- valve seat
- gap
- seat surface
- 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
- 239000012530 fluid Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は圧力制御弁に関する。[Detailed explanation of the idea] (Industrial application field) The present invention relates to a pressure control valve.
（従来の技術）
第４図に示すように圧力制御弁５１は一般にポ
ート５２，５３が開口されたシリンダ室５４を備
える弁本体５５と、シリンダ室５４に嵌装されス
プリング５６により付勢されたピストン体５７
と、前記ピストン体５７に組込まれ通孔６１を開
閉するボール６２と、前記ピストン体５７を受け
る弁座６３等で構成されている。(Prior Art) As shown in FIG. 4, a pressure control valve 51 generally includes a valve body 55 including a cylinder chamber 54 with ports 52 and 53 opened, and a valve body 55 fitted in the cylinder chamber 54 and biased by a spring 56. Piston body 57
, a ball 62 that is incorporated into the piston body 57 and opens and closes the through hole 61 , a valve seat 63 that receives the piston body 57 , and the like.
そして一方のポート５３の圧力が他方のポート
５２の圧力よりも所定範囲の差異内で高い場合に
はピストン体５７は弁座６３に係合し、且つボー
ル６２は通孔６１を塞ぎロツク状態が構成され、
また、他方のポート５２の圧力が高い場合には、
流体はポート５２、シリンダ室５４、ピストン体
５７の通孔６１、弁座６３のスリツト６４を通つ
て他方のポート５３へと流れ、また一方のポート
５３の圧力が他方のポート５２の圧力よりも所定
差以上高い場合にはスプリング５６の弾発力に抗
してピストン体５７を移動させ、流体はポート５
３、弁座６３の通孔６５、シリンダ室５４を通つ
て他方のポート５２へと流れるように構成されて
いる。 When the pressure in one port 53 is higher than the pressure in the other port 52 within a predetermined range, the piston body 57 engages with the valve seat 63, and the ball 62 closes the through hole 61 to maintain the locked state. configured,
Furthermore, if the pressure in the other port 52 is high,
The fluid flows to the other port 53 through the port 52, the cylinder chamber 54, the through hole 61 of the piston body 57, and the slit 64 of the valve seat 63, and the pressure in one port 53 is higher than the pressure in the other port 52. If the difference is higher than a predetermined value, the piston body 57 is moved against the elastic force of the spring 56, and the fluid is transferred to the port 5.
3. It is configured to flow through the through hole 65 of the valve seat 63 and the cylinder chamber 54 to the other port 52.
（考案が解決しようとする問題点）
しかしながら、斯かる従来の圧力制御弁５１で
は、ピストン体５７、ボール６２、弁座６３等を
要するため部品点数は多く、また各部材、特にピ
ストン体５７はボール６２が組込まれるため構造
も複雑となり、ボール６２とのシール性を確保す
るため加工工数も多く制作が面倒である等の不具
合があつた。(Problems to be Solved by the Invention) However, such a conventional pressure control valve 51 requires a piston body 57, a ball 62, a valve seat 63, etc., and thus has a large number of parts. Since the ball 62 is incorporated, the structure becomes complicated, and there are problems such as a large number of machining steps required to ensure sealing with the ball 62, and production is troublesome.
本考案は前記事情に鑑み案出されたものであつ
て、本考案の目的とする処は、部品点数を削減で
き、更には構造簡易で容易に製作できる圧力制御
弁を提供するにある。 The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a pressure control valve that can reduce the number of parts, has a simple structure, and can be easily manufactured.
（問題点を解決するための手段）
本考案は前記目的を達成するため、両側に夫々
ポート４，５が開口されたシリンダ室３を備える
弁本体２を設け、前記シリンダ室３に摺動自在に
組込まれ内部に前記両ポート４，５のうちの一方
のポート５側に臨む弁座面６０５が形成された中
空状の外ピストン体６を設け、前記外ピストン体
６を前記一方のポート５側に付勢するばね８を設
け、前記外ピストン体６の内部に組込まれると共
に前記弁座面６０５に係合自在な弁座面７０５を
有する内ピストン体７を設け、前記外ピストン体
６を前記一方のポート５側のシリンダ端面３０１
に当接させ、内ピストン体７の弁座面７０５を外
ピストン体６の弁座面６０５に係合させた状態
で、他方のポート４側のシリンダ端面３０２と外
ピストン体端部６０８との隙間L2は、シリンダ
端面３０２と内ピストン体端部７０８との隙間
L1よりも大きく、且つ一方のポート５側のシリ
ンダ端面３０１と内ピストン体端部７０６との間
には隙間L3が確保されるよう形成し、前記外ピ
ストン体６の弁座面６０５と内ピストン体７の弁
座面７０５との間に画成される隙間１３を介して
前記両ポート４，５を接続する通路２１，２２を
設けたことを特徴とする。(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a valve body 2 having a cylinder chamber 3 with ports 4 and 5 opened on both sides, and is slidable into the cylinder chamber 3. A hollow outer piston body 6 is provided inside which is formed with a valve seat surface 605 facing one of the ports 4 and 5, and the outer piston body 6 is connected to the one port 5. A spring 8 biasing the outer piston body 6 is provided, and an inner piston body 7 is provided which is incorporated inside the outer piston body 6 and has a valve seat surface 705 that can freely engage with the valve seat surface 605. Cylinder end surface 301 on the one port 5 side
With the valve seat surface 705 of the inner piston body 7 engaged with the valve seat surface 605 of the outer piston body 6, the cylinder end surface 302 on the other port 4 side and the outer piston body end 608 are brought into contact with each other. Gap L2 is the gap between the cylinder end surface 302 and the inner piston body end 708.
A gap L 3 is formed so as to be larger than L 1 and ensured between the cylinder end surface 301 on one port 5 side and the inner piston body end 706, and the gap L 3 is larger than the valve seat surface 605 of the outer piston body 6. It is characterized by providing passages 21 and 22 that connect the ports 4 and 5 through a gap 13 defined between the inner piston body 7 and the valve seat surface 705.
（作用）
一方のポート５側の圧力が他方のポート４側の
圧力よりも所定範囲の差異内で高い場合には、第
１図に示すように外ピストン体６はシリンダ端面
３０１に当接し、弁座面６０５，７０５は係合し
て隙間１３は閉塞され、ポート４側とポート５側
は遮断される。(Function) When the pressure on one port 5 side is higher than the pressure on the other port 4 side within a predetermined range of difference, the outer piston body 6 comes into contact with the cylinder end surface 301 as shown in FIG. The valve seat surfaces 605 and 705 are engaged, the gap 13 is closed, and the port 4 side and the port 5 side are cut off.
ポート４側の圧力がポート５側の圧力より高い
場合には第２図に示すように内ピストン体７はシ
リンダ端面３０１に当接し、弁座面６０５，７０
５間にはL3の隙間１３が確保され、ポート４と
ポート５はこの隙間１３を含んだ通路２１で連通
され、流体はポート４からポート５へ流れる。 When the pressure on the port 4 side is higher than the pressure on the port 5 side, the inner piston body 7 comes into contact with the cylinder end surface 301 as shown in FIG.
A gap 13 of L 3 is secured between ports 5 and 5, and ports 4 and 5 are communicated through a passage 21 that includes this gap 13, and fluid flows from port 4 to port 5.
ポート５側の圧力がポート４側の圧力よりも所
定差以上に高い場合には第３図に示すように外ピ
ストン体６及び内ピストン体７はシリンダ端面３
０２に当接し、弁座面６０５，７０５間には
（L2−L1）の隙間１３が確保され、ポート４，５
はこの隙間１３を含んだ通路２２で連通され、流
体はポート５からポート４へ流れる。 When the pressure on the port 5 side is higher than the pressure on the port 4 side by more than a predetermined difference, the outer piston body 6 and the inner piston body 7 move toward the cylinder end face 3 as shown in FIG.
02, a gap 13 of (L 2 -L 1 ) is secured between the valve seat surfaces 605 and 705, and the ports 4 and 5 are in contact with each other.
are communicated through a passage 22 including this gap 13, and fluid flows from port 5 to port 4.
そして以上の作動を外ピストン体６、内ピスト
ン体７、ばね８の三つの部材で行うことができ、
部品点数の削減化が図れ、また外ピストン体６、
内ピストン体７は構造簡易で、簡易な加工により
シール性を確保でき、圧力制御弁１を容易に製作
できる。 The above operation can be performed using three members: the outer piston body 6, the inner piston body 7, and the spring 8.
The number of parts can be reduced, and the outer piston body 6,
The inner piston body 7 has a simple structure, and sealing performance can be ensured by simple processing, and the pressure control valve 1 can be easily manufactured.
（実施例）
以下に本考案の好適一実施例を添付図面に従つ
て説明する。(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図乃至第３図は夫々圧力制御弁の各作動状
態の断面側面図である。 1 to 3 are cross-sectional side views of the pressure control valve in each operating state.
１は圧力制御弁、２はシリンダ室３が形成され
た弁本体、４，５はシリンダ室３に開口されたポ
ートで、シリンダ室３には中空状の外ピストン体
６を摺動自在に嵌装し、外ピストン体６には内ピ
ストン体７を遊嵌する。 1 is a pressure control valve, 2 is a valve body in which a cylinder chamber 3 is formed, 4 and 5 are ports opened to the cylinder chamber 3, and a hollow outer piston body 6 is slidably fitted into the cylinder chamber 3. The inner piston body 7 is loosely fitted into the outer piston body 6.
前記外ピストン体６は大径筒部６０１と、小径
筒部６０２と、大径筒部６０１と小径筒部６０２
を接続するフランジ部６０３で構成する。前記小
径筒部６０２には通孔６０４，…を穿設し、フラ
ンジ部６０３の内面は弁座面６０５に形成し、外
ピストン体６はコイルスプリング８によポート５
側のシリンダ端面３０１に付勢する。 The outer piston body 6 includes a large diameter cylindrical portion 601, a small diameter cylindrical portion 602, a large diameter cylindrical portion 601, and a small diameter cylindrical portion 602.
It consists of a flange portion 603 that connects. The small diameter cylindrical portion 602 has through holes 604, .
The side cylinder end face 301 is biased.
前記内ピストン体７は大径筒部６０１内に位置
する大径部７０１と、小径筒部６０２内に位置す
る小径部７０２と、大径部７０１と小径部７０２
を接続し前記弁座面６０５に係合自在な弁座面７
０５とで構成する。 The inner piston body 7 has a large diameter portion 701 located within the large diameter cylindrical portion 601, a small diameter portion 702 located within the small diameter cylindrical portion 602, and the large diameter portion 701 and the small diameter portion 702.
a valve seat surface 7 that can be connected to the valve seat surface 605 and freely engage with the valve seat surface 605;
05.
前記大径部７０１と小径部７０２は夫々大径筒
部６０１内周面と、小径筒部６０２内周面との間
に環状の隙間１１，１２を画成し得る径で形成
し、大径部７０１端には前記隙間１１とポート５
を連通するスリツト７０７を形成する。 The large diameter portion 701 and the small diameter portion 702 are formed with diameters that can define annular gaps 11 and 12 between the inner circumferential surface of the large diameter cylindrical portion 601 and the inner circumferential surface of the small diameter cylindrical portion 602, respectively. The gap 11 and the port 5 are provided at the end of the portion 701.
A slit 707 is formed to communicate with each other.
前記外ピストン体６及び内ピストン体７の各部
の長さは、第１図に示すように、外ピストン体端
面６０６がシリンダ端面３０１に当接し、弁座面
６０５，７０５が係合した状態で、小径部端面７
０８とシリンダ端面３０２との間にL1の隙間が、
小径筒部端面６０８とシリンダ端面３０２との間
に前記L1よりも大きいL2の隙間が、また、大径
部端面７０６とシリンダ端面３０１との間にL3
の隙間が確保されるように設定する。 As shown in FIG. 1, the length of each part of the outer piston body 6 and the inner piston body 7 is such that the outer piston body end face 606 is in contact with the cylinder end face 301 and the valve seat faces 605 and 705 are engaged. , small diameter end face 7
There is a gap of L 1 between 08 and the cylinder end surface 302,
There is a gap L2 larger than L1 between the small diameter cylindrical end face 608 and the cylinder end face 302, and a gap L3 between the large diameter part end face 706 and the cylinder end face 301.
Set so that the gap is secured.
次に作動について説明する。 Next, the operation will be explained.
ポート５側の圧力がポート４側の圧力よりも所
定範囲の差異内で大きい場合には、第１図に示す
ようにスプリング８の弾発力により大径部端面６
０６はシリンダ端面３０１に当接し、弁座面６０
５，７０５は係合し、隙間１１，１２は遮断さ
れ、ポート５側とポート４側が遮断されたロツク
状態が形成される。 When the pressure on the port 5 side is greater than the pressure on the port 4 side within a predetermined range, the large diameter end face 6 is compressed by the elastic force of the spring 8 as shown in FIG.
06 is in contact with the cylinder end surface 301, and the valve seat surface 60
5 and 705 are engaged, gaps 11 and 12 are blocked, and a locked state is formed in which the port 5 side and the port 4 side are blocked.
次にポート４側の圧力がポート５側の圧力より
高い場合には第２図に示すように内ピストン体７
は移動し、大径部端面７０６はシリンダ端面３０
１に当接し、ポート４，５は隙間１２、弁座面６
０５と弁座面７０５との間の隙間１３、隙間１
１、スリツト７０７で形成される通路２１を介し
て連通され、流体はポート４からポート５に流れ
る。そして前記隙間１３を画成する弁座面６０
５，７０５間の寸法は前記寸法L3となる。 Next, if the pressure on the port 4 side is higher than the pressure on the port 5 side, the inner piston body 7
moves, and the large-diameter end face 706 is aligned with the cylinder end face 30.
1, ports 4 and 5 have a gap 12, and the valve seat surface 6
Gap 13 between 05 and valve seat surface 705, Gap 1
1, the fluid flows from port 4 to port 5 through passage 21 formed by slit 707. and a valve seat surface 60 that defines the gap 13.
The dimension between 5 and 705 is the aforementioned dimension L3 .
次にポート５側の圧力がポート４側の圧力より
も所定差以上に高い場合には、第３図に示すよう
にスプリング８の弾発力に抗して外ピストン体６
及び内ピストン体７は移動し、小径筒部端面６０
８及び小径部端面７０８はシリンダ端面３０２に
当接し、ポート４，５は隙間１１，１３，１２、
通孔６０４で形成される通路２２を介して連通さ
れ、流体はポート５からポート４に流れ、前記隙
間１３を画成する弁座面６０５，７０５間の寸法
は前記寸法L2とL1の差となる。 Next, when the pressure on the port 5 side is higher than the pressure on the port 4 side by more than a predetermined difference, the outer piston body 6 resists the elastic force of the spring 8 as shown in FIG.
The inner piston body 7 moves and the small diameter cylinder end face 60
8 and the small diameter end face 708 are in contact with the cylinder end face 302, and the ports 4 and 5 are in the gaps 11, 13, 12,
The fluid flows from port 5 to port 4 through the passage 22 formed by the through hole 604, and the dimension between the valve seat surfaces 605 and 705 defining the gap 13 is equal to the dimension L 2 and L 1 . It makes a difference.
そして以上の作動を外ピストン体６、内ピスト
ン体７、ばね８の必要最少限の三つの部材で行う
ことができ、従つて部品点数の削減化が図れ、ま
た外ピストン体６、内ピストン体７の構造は簡易
で、簡易な加工によりシール性を確保でき、圧力
制御弁１を容易に製作することができる。 The above operation can be performed using the minimum number of three members, the outer piston body 6, the inner piston body 7, and the spring 8. Therefore, the number of parts can be reduced, and the outer piston body 6, the inner piston body The structure of 7 is simple, sealing performance can be ensured through simple processing, and the pressure control valve 1 can be easily manufactured.
また、コイルスプリング８のセツト荷重調整は
内ピストン体７の小径部７０２の長さｌを調整す
ることにより可能となる。 Further, the set load of the coil spring 8 can be adjusted by adjusting the length l of the small diameter portion 702 of the inner piston body 7.
尚実施例においては通路２１，２２を夫々外ピ
ストン体６の内周面と内ピストン体７の外周面と
で画成される隙間１１，１２を介して構成するよ
うにしたが、斯かる通路２１，２２の構成は任意
で、要するに開閉される隙間１３を介してポート
４，５を連通遮断する通路であればよい。 In the embodiment, the passages 21 and 22 are formed through gaps 11 and 12 defined by the inner peripheral surface of the outer piston body 6 and the outer peripheral surface of the inner piston body 7, respectively. The configuration of 21 and 22 is arbitrary, and in short, it may be any passageway that connects and disconnects the ports 4 and 5 via the gap 13 that is opened and closed.
（考案の効果）
以上の説明で明らかなように本考案によれば、
圧力制御弁の部品点数を削減でき、更には構造簡
易で容易に製作できる。(Effect of the invention) As is clear from the above explanation, according to the invention,
The number of parts of the pressure control valve can be reduced, and the structure is simple and easy to manufacture.
第１図乃至第３図は圧力制御弁の各作動状態の
断面側面図、第４図は従来の圧力制御弁の断面側
面図である。
尚図面中１は圧力制御弁、２は弁本体、３はシ
リンダ室、４，５はポート、６は外ピストン体、
７は内ピストン体、８はコイルスプリング、６０
５，７０５は弁座面である。
1 to 3 are cross-sectional side views of each operating state of the pressure control valve, and FIG. 4 is a cross-sectional side view of a conventional pressure control valve. In the drawing, 1 is a pressure control valve, 2 is a valve body, 3 is a cylinder chamber, 4 and 5 are ports, 6 is an outer piston body,
7 is the inner piston body, 8 is the coil spring, 60
5,705 is a valve seat surface.
Claims (1)
室３を備える弁本体２と、 前記シリンダ室３に摺動自在に組込まれ内部に
前記両ポート４，５のうちの一方のポート５側に
臨む弁座面６０５が形成された中空状の外ピスト
ン体６と、 前記外ピストン体６を前記一方のポート５側に
付勢するばね８と、 前記外ピストン体６の内部に組込まれると共に
前記弁座面６０５に係合自在な弁座面７０５を有
する内ピストン体７とを備え、 前記外ピストン体６を前記一方のポート５側の
シリンダ端面３０１に当接させ、内ピストン体７
の弁座面７０５を外ピストン体６の弁座面６０５
に係合させた状態で、他方のポート４側のシリン
ダ端面３０２と外ピストン体端部６０８との隙間
L2は、シリンダ端面３０２と内ピストン体端部
７０８との隙間L1よりも大きく、且つ一方のポ
ート５側のシリンダ端面３０１と内ピストン体端
部７０６との間には隙間L3が確保されるよう形
成され、 前記外ピストン体６の弁座面６０５と内ピスト
ン体７の弁座面７０５との間に画成される隙間１
３を介して前記両ポート４，５を接続する通路２
１，２２が設けられた圧力制御弁１。[Claims for Utility Model Registration] A valve body 2 comprising a cylinder chamber 3 with ports 4 and 5 opened on both sides, and a valve body 2 that is slidably incorporated into the cylinder chamber 3 and has ports 4 and 5 inside it. a hollow outer piston body 6 formed with a valve seat surface 605 facing the one port 5 side; a spring 8 that biases the outer piston body 6 toward the one port 5 side; and the outer piston body 6 and an inner piston body 7 having a valve seat surface 705 that is incorporated into the interior of the valve seat surface 705 and can freely engage with the valve seat surface 605, and the outer piston body 6 is brought into contact with the cylinder end surface 301 on the side of the one port 5. , inner piston body 7
The valve seat surface 705 of the outer piston body 6 is the valve seat surface 605 of the outer piston body 6.
The gap between the cylinder end surface 302 on the other port 4 side and the outer piston body end 608
L2 is larger than the gap L1 between the cylinder end surface 302 and the inner piston body end 708, and a gap L3 is ensured between the cylinder end surface 301 on one port 5 side and the inner piston body end 706. a gap 1 defined between the valve seat surface 605 of the outer piston body 6 and the valve seat surface 705 of the inner piston body 7;
A passage 2 connecting the ports 4 and 5 via 3
A pressure control valve 1 provided with 1 and 22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3644185U JPH0229331Y2 (en) | 1985-03-14 | 1985-03-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3644185U JPH0229331Y2 (en) | 1985-03-14 | 1985-03-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61152859U JPS61152859U (en) | 1986-09-22 |
| JPH0229331Y2 true JPH0229331Y2 (en) | 1990-08-07 |
Family
ID=30541623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3644185U Expired JPH0229331Y2 (en) | 1985-03-14 | 1985-03-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0229331Y2 (en) |
-
1985
- 1985-03-14 JP JP3644185U patent/JPH0229331Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61152859U (en) | 1986-09-22 |
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