JP2021102995A - On-off valve device - Google Patents

On-off valve device Download PDF

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JP2021102995A
JP2021102995A JP2019235323A JP2019235323A JP2021102995A JP 2021102995 A JP2021102995 A JP 2021102995A JP 2019235323 A JP2019235323 A JP 2019235323A JP 2019235323 A JP2019235323 A JP 2019235323A JP 2021102995 A JP2021102995 A JP 2021102995A
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valve
peripheral surface
outer peripheral
inner peripheral
sealing member
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JP7458019B2 (en
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武司 土田
Takeshi Tsuchida
武司 土田
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Kosmek KK
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Kosmek KK
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Abstract

To provide an on-off valve device capable of simply and reliably fixing a sealing member of the on-off valve device onto a loading groove.SOLUTION: A tapered inner circumferential surface (19) is formed on an inner circumferential wall of a cylindrical casing (15). A release surface (20) is formed so as to continue to the tapered inner circumferential surface (19). A loading groove (25) is formed on a first valve member (23) which is movably inserted into the casing (15) and a sealing member (26) is loaded on the loading groove (25). A first valve seat (21) formed on the tapered inner circumferential surface (19) and a first valve surface (27) formed on the sealing member (26) can come into contact with each other. A gap (31) is formed between the sealing member (26) and the loading groove (25).SELECTED DRAWING: Figure 1

Description

この発明は、圧縮流体の流路を閉弁および開弁する開閉弁装置に関する。 The present invention relates to an on-off valve device that closes and opens the flow path of a compressed fluid.

この種の開閉弁装置には、従来では、特許文献１(日本国・特開2017-26131号公報)に記載されたカップリング装置内に設けられるようなものがある。その従来技術は、次のように構成されている。
従来の開閉弁装置では、図３Ｄから図３Ｆに示すように、弁ケース６０が筒状に形成され、その筒孔の内周壁から突起部６１が当該筒孔の径方向の内方（図３Ｄから図３Ｆにおいては右方）に向けて形成される。その突起部６１のテーパ内周面６２によって弁座６３が構成される。また、弁ケース６０の筒孔に弁部材６４が上下方向へ移動可能に挿入される。その弁部材６４は、筒孔に摺動可能に挿入されるロッド部分と、ロッド部分の上側であって当該ロッド部よりも大径に形成される先端部分６５とを有している。その先端部分６５の外周壁にテーパ外周面６６が形成されると共に、そのテーパ外周面６６に装着溝６７が周方向に形成される。その装着溝６７にゴムや樹脂等の封止部材６８が装着される。装着溝６７の下側周壁によって薄肉部６９が構成される。その薄肉部６９を上方へ押圧して塑性変形させることにより、装着溝６７の周壁全体が封止部材６８を把持して当該装着溝６７内に固定する。その装着溝６７の開口部から封止部材６８の一部が押し出されて、弁部材６４のテーパ外周面６６から外側に突出している。その封止部材６８の外周壁に形成される弁面７０が、上記の弁座６３に面接触可能となっている。 Conventionally, there is an on-off valve device of this type provided in the coupling device described in Patent Document 1 (Japanese Patent Laid-Open No. 2017-26131). The prior art is configured as follows.
In the conventional on-off valve device, as shown in FIGS. 3D to 3F, the valve case 60 is formed in a tubular shape, and the protrusion 61 from the inner peripheral wall of the tubular hole is inward in the radial direction of the tubular hole (FIG. 3D). (To the right in FIG. 3F). The valve seat 63 is formed by the tapered inner peripheral surface 62 of the protrusion 61. Further, the valve member 64 is inserted into the tubular hole of the valve case 60 so as to be movable in the vertical direction. The valve member 64 has a rod portion that is slidably inserted into the tubular hole, and a tip portion 65 that is above the rod portion and has a diameter larger than that of the rod portion. A tapered outer peripheral surface 66 is formed on the outer peripheral wall of the tip portion 65, and a mounting groove 67 is formed on the tapered outer peripheral surface 66 in the circumferential direction. A sealing member 68 made of rubber, resin, or the like is mounted in the mounting groove 67. The thin portion 69 is formed by the lower peripheral wall of the mounting groove 67. By pressing the thin portion 69 upward to plastically deform it, the entire peripheral wall of the mounting groove 67 grips the sealing member 68 and fixes it in the mounting groove 67. A part of the sealing member 68 is extruded from the opening of the mounting groove 67 and protrudes outward from the tapered outer peripheral surface 66 of the valve member 64. The valve surface 70 formed on the outer peripheral wall of the sealing member 68 is in surface contact with the valve seat 63.

特開2017-26131号公報JP-A-2017-26131

上記の従来技術は、弁部材の薄肉部を塑性変形させて、装着溝の周壁が封止部材を把持することにより、封止部材を装着溝に強固に固定できる点で優れている。しかしながら、装着溝の周壁を封止部材に均一に押圧させなければ、封止部材の外周面の高さや、封止部材の弾性にムラが生じることになり、その装着作業に手間がかかっていた。開閉弁装置の封止部材を装着溝に簡単かつ確実に固定できるようにする点で改良の余地があった。 The above-mentioned conventional technique is excellent in that the sealing member can be firmly fixed to the mounting groove by plastically deforming the thin portion of the valve member and the peripheral wall of the mounting groove grips the sealing member. However, if the peripheral wall of the mounting groove is not uniformly pressed against the sealing member, the height of the outer peripheral surface of the sealing member and the elasticity of the sealing member will be uneven, and the mounting work will take time and effort. .. There was room for improvement in that the sealing member of the on-off valve device could be easily and surely fixed to the mounting groove.

上記の目的を達成するため、第１発明は、例えば、図１から図３Ｈに示すように、開閉弁装置を次のように構成した。
筒状のケーシング１５の内周壁にテーパ内周面１９が、ケーシング１５の筒孔の軸方向の先端側へ向かうにつれて先細りするように形成される。前記テーパ内周面１９の前記軸方向の基端側に連続する逃がし面２０が形成され、逃がし面２０が前記テーパ内周面１９に交差するように形成される。前記テーパ内周面１９の前記軸方向の基端側部分に第１弁座２１形成される。前記ケーシング１５の筒孔内に第１弁部材２３が前記軸方向に移動可能に挿入される。前記第１弁部材２３の外周壁にテーパ外周面２４が前記先端側へ向かうにつれて軸心に近づくように形成される。前記テーパ外周面２４に装着溝２５が周方向に開口される。前記装着溝２５に封止部材２６が装着される。前記封止部材２６の外周壁に形成される第１弁面２７が、前記第１弁座２１に当接可能となっている。前記封止部材２６の前記軸方向の基端側外周面と前記装着溝２５の前記軸方向の基端側内周面との間に隙間３１が形成される。 In order to achieve the above object, in the first invention, for example, as shown in FIGS. 1 to 3H, the on-off valve device is configured as follows.
A tapered inner peripheral surface 19 is formed on the inner peripheral wall of the tubular casing 15 so as to taper toward the tip end side of the tubular hole of the casing 15 in the axial direction. A continuous relief surface 20 is formed on the base end side of the tapered inner peripheral surface 19 in the axial direction, and the relief surface 20 is formed so as to intersect the tapered inner peripheral surface 19. The first valve seat 21 is formed on the axially proximal end side portion of the tapered inner peripheral surface 19. The first valve member 23 is movably inserted in the tubular hole of the casing 15 in the axial direction. The tapered outer peripheral surface 24 is formed on the outer peripheral wall of the first valve member 23 so as to approach the axial center toward the tip end side. A mounting groove 25 is opened in the circumferential direction on the tapered outer peripheral surface 24. The sealing member 26 is mounted in the mounting groove 25. The first valve surface 27 formed on the outer peripheral wall of the sealing member 26 can come into contact with the first valve seat 21. A gap 31 is formed between the outer peripheral surface of the sealing member 26 on the proximal end side in the axial direction and the inner peripheral surface of the mounting groove 25 on the proximal end side in the axial direction.

本発明は、例えば、同上の図１から図３Ｈに示すように、次のような作用効果を奏する。
本発明開閉弁装置では、封止部材を装着溝に簡単かつ確実に固定できる。 The present invention has the following effects, for example, as shown in FIGS. 1 to 3H of the above.
In the on-off valve device of the present invention, the sealing member can be easily and surely fixed to the mounting groove.

上記の目的を達成するため、第２発明は、例えば、図１から図３Ｈに示すように、開閉弁装置を次のように構成した。
ケーシング４０に形成される装着孔４１の底壁に、弁座部材４２が当該装着孔４１の軸方向の先端側へ突設される。前記弁座部材４２に前記基端側へ向かうにつれて先細りするテーパ外周面４３が周方向に形成される。前記テーパ外周面４３の前記軸方向の基端側に連続する逃がし面４４が形成され、その逃がし面４４がテーパ外周面４３と交差する。前記テーパ外周面４３の前記軸方向の基端側外周壁に第２弁座４５が周方向に形成される。前記装着孔４１に筒状の第２弁部材４６が前記軸方向に移動可能に挿入される。前記第２弁部材４６の内周壁にテーパ内周面４６ａが前記軸方向の基端側に向かうにつれて先細りするように形成される。前記テーパ内周面４６ａに周方向に開口される装着溝４７に、封止部材４８が装着される。前記封止部材４８の外周壁に周方向に形成される第２弁面４９が、前記第２弁座４５に当接可能となっている。前記封止部材４８の前記軸方向の基端側外周面と前記装着溝４７の前記基端側内周面との間に隙間５０が形成される。 In order to achieve the above object, in the second invention, for example, as shown in FIGS. 1 to 3H, the on-off valve device is configured as follows.
A valve seat member 42 is projected from the bottom wall of the mounting hole 41 formed in the casing 40 toward the tip end side of the mounting hole 41 in the axial direction. A tapered outer peripheral surface 43 that tapers toward the base end side is formed on the valve seat member 42 in the circumferential direction. A continuous relief surface 44 is formed on the base end side of the tapered outer peripheral surface 43 in the axial direction, and the relief surface 44 intersects the tapered outer peripheral surface 43. A second valve seat 45 is formed in the circumferential direction on the outer peripheral wall on the base end side in the axial direction of the tapered outer peripheral surface 43. A tubular second valve member 46 is movably inserted into the mounting hole 41 in the axial direction. A tapered inner peripheral surface 46a is formed on the inner peripheral wall of the second valve member 46 so as to taper toward the proximal end side in the axial direction. The sealing member 48 is mounted in the mounting groove 47 opened in the circumferential direction on the tapered inner peripheral surface 46a. The second valve surface 49 formed on the outer peripheral wall of the sealing member 48 in the circumferential direction can come into contact with the second valve seat 45. A gap 50 is formed between the outer peripheral surface of the sealing member 48 on the proximal end side in the axial direction and the inner peripheral surface of the mounting groove 47 on the proximal end side.

図１は、本発明の一実施形態を示し、開閉弁装置を備えるカップリング装置の断面視の模式図である。FIG. 1 shows an embodiment of the present invention and is a schematic cross-sectional view of a coupling device including an on-off valve device. 図２は、上記のカップリング装置の連結状態を示す断面視の模式図である。FIG. 2 is a schematic cross-sectional view showing the connected state of the coupling device. 図３Ａ，図３Ｇは、図１中のＡ，Ｇ部分を示す部分拡大図である。図３Ｃ，図３Ｈは、図２中のＣ，Ｈ部分を示す部分拡大図である。図３Ｂは、図３Ａから図３Ｃへの切換途中を示す図である。図３Ｄから図３Ｆは、従来の開閉弁装置を示す図であり、図３Ａに類似する図である。3A and 3G are partially enlarged views showing parts A and G in FIG. 3C and 3H are partially enlarged views showing the C and H portions in FIG. 2. FIG. 3B is a diagram showing the middle of switching from FIG. 3A to FIG. 3C. 3D to 3F are views showing a conventional on-off valve device, which is similar to FIG. 3A.

図１から図３は、本発明の一実施形態を示し、まず、図１によって開閉弁装置を備えるカップリング装置の構造を説明する。 1 to 3 show an embodiment of the present invention, and first, the structure of a coupling device including an on-off valve device will be described with reference to FIG.

上記カップリング装置の基準ブロック１に、可動ブロック２が着脱自在に上方から装着される。本発明のカップリング装置は、基準ブロック１に装着された第１継手５と、可動ブロック２に装着された第２継手６とを有する。その第１継手５内に第１給排路７が形成されると共に、第２継手６内に第２給排路８が形成される。 The movable block 2 is detachably attached to the reference block 1 of the coupling device from above. The coupling device of the present invention has a first joint 5 mounted on the reference block 1 and a second joint 6 mounted on the movable block 2. A first supply / discharge passage 7 is formed in the first joint 5, and a second supply / discharge passage 8 is formed in the second joint 6.

上記基準ブロック１に第１継手５の第１ケーシング１０がボルトによって固定される。その第１ケーシング１０は、外筒１１と、その外筒１１の内周孔の下部に螺合される内筒１２とを有する。その内筒１２は、外筒１１に保密状に螺合される大径部分１２ａと、その大径部分１２ａの上側に設けられた小径部分１２ｂとを有する。小径部分１２ｂと外筒１１の内周孔との間に隙間が形成され、その隙間に弁ケース（ケーシング）１５の大径部分１５ａが封止部材１２ｃを介して保密状で上下方向へ移動可能に挿入される。その大径部分１５ａの上側に小径部分１５ｂが突設される。また、弁ケース１５が駆動手段Ｄによって上下方向へ移動可能に挿入され、その駆動手段Ｄは、次のように構成される。 The first casing 10 of the first joint 5 is fixed to the reference block 1 by bolts. The first casing 10 has an outer cylinder 11 and an inner cylinder 12 screwed into the lower part of the inner peripheral hole of the outer cylinder 11. The inner cylinder 12 has a large-diameter portion 12a screwed tightly into the outer cylinder 11 and a small-diameter portion 12b provided above the large-diameter portion 12a. A gap is formed between the small diameter portion 12b and the inner peripheral hole of the outer cylinder 11, and the large diameter portion 15a of the valve case (casing) 15 can move in the vertical direction in a heat-tight manner via the sealing member 12c in the gap. Will be inserted into. A small diameter portion 15b is projected above the large diameter portion 15a. Further, the valve case 15 is inserted by the driving means D so as to be movable in the vertical direction, and the driving means D is configured as follows.

上記の外筒１１の内周孔と内筒１２の外周部と弁ケース１５の大径部分１５ａとによってロック室１６が区画形成される。そのロック室１６は、給排路１７を介して圧油供給源（図示せず）に接続されている。その給排路１７は、第１ケーシング１０に形成された流路１７ａと、基準ブロック１に形成された流路１７ｂとを有する。また、第１ケーシング１０の内周孔の上部に半径方向の内方に向けて突設された突出部分１０ａの下面と、弁ケース１５の大径部分１５ａの上面との間にリリースバネ１８が装着される。そのリリースバネ１８が弁ケース１５を下方へ付勢している。 The lock chamber 16 is partitioned by the inner peripheral hole of the outer cylinder 11, the outer peripheral portion of the inner cylinder 12, and the large diameter portion 15a of the valve case 15. The lock chamber 16 is connected to a pressure oil supply source (not shown) via a supply / discharge passage 17. The supply / discharge passage 17 has a flow path 17a formed in the first casing 10 and a flow path 17b formed in the reference block 1. Further, a release spring 18 is provided between the lower surface of the protruding portion 10a projecting inward in the radial direction above the inner peripheral hole of the first casing 10 and the upper surface of the large diameter portion 15a of the valve case 15. It is installed. The release spring 18 urges the valve case 15 downward.

上記の弁ケース１５の上端部から突出部分１５ｃが当該弁ケース１５の半径方向の内方へ突設される。図３Ａから図３Ｃに示すように、その突出部分１５ｃの内周壁にテーパ内周面１９が上方へ向かうにつれて先細りするように形成される。そのテーパ内周面１９に連続するように、逃がし面２０が当該テーパ内周面１９に交差するように形成される。なお、本実施形態の逃がし面２０は、弁ケース１５の軸心に対して垂直となるように形成されているが、これに限定されず、テーパ内周面１９に対して交差して角を形成していればよい。また、テーパ内周面１９の下端部または、テーパ内周面１９の下端部およびテーパ内周面１９と逃がし面２０との接続部によって第１弁座２１が形成される。さらに、その角が曲面状に加工される場合には、テーパ内周面１９と逃がし面２０との接続部によって第１弁座２１を形成するようにしてもよい。 A protruding portion 15c from the upper end of the valve case 15 projects inward in the radial direction of the valve case 15. As shown in FIGS. 3A to 3C, the tapered inner peripheral surface 19 is formed on the inner peripheral wall of the protruding portion 15c so as to taper upward. The relief surface 20 is formed so as to intersect the tapered inner peripheral surface 19 so as to be continuous with the tapered inner peripheral surface 19. The relief surface 20 of the present embodiment is formed so as to be perpendicular to the axial center of the valve case 15, but the present invention is not limited to this, and the relief surface 20 intersects the tapered inner peripheral surface 19 and has an angle. It suffices if it is formed. Further, the first valve seat 21 is formed by the lower end portion of the tapered inner peripheral surface 19, the lower end portion of the tapered inner peripheral surface 19, and the connecting portion between the tapered inner peripheral surface 19 and the relief surface 20. Further, when the corner is processed into a curved surface, the first valve seat 21 may be formed by the connecting portion between the tapered inner peripheral surface 19 and the relief surface 20.

上記の弁ケース１５の小径部分１５ｂの内周孔にリング状の案内部材２２が止め輪によって固定される。その案内部材２２の内周孔に第１弁部材２３の小径部分２３ａが上下方向に移動可能に挿入される。その第１弁部材２３の小径部分２３ａの上側に大径部分２３ｂが形成される。その大径部分２３ｂの外周壁が、上方へ向かうにつれて軸心に近づくように、テーパ外周面２４が形成されると共に、周方向に形成された装着溝２５を有する。その装着溝２５に封止部材であるＯリング２６が装着され、そのＯリング２６の外周部に第１弁面２７が形成され、その第１弁面２７が弁ケース１５の第１弁座２１に当接可能となっている。そのＯリング２６は、ゴム又は樹脂等の弾性体によって形成されている。また、装着前のＯリング２６の直径は、装着溝２５の底壁の直径と同じかそれより小さくなるように設定されている。このため、装着後のＯリング２６は、装着溝２５から外れる方向へ外力が作用されても、自らの弾性復元力によって装着溝２５の底壁に向けて付勢される。また、Ｏリング２６の下端面と装着溝２５の周縁近傍との間に隙間が形成されている。より詳しく言うと、その隙間３１は、第１弁面２７と第１弁座２１とが当接する位置から前記軸方向の下側位置に形成されている。このため、第１弁面２７が第１弁座２１に係合したときに、Ｏリング２６の内側部分が装着溝２５に密着もしくは近接した状態を維持しながら、外側部分が隙間３１に退避する。 A ring-shaped guide member 22 is fixed to the inner peripheral hole of the small diameter portion 15b of the valve case 15 by a retaining ring. The small diameter portion 23a of the first valve member 23 is inserted into the inner peripheral hole of the guide member 22 so as to be movable in the vertical direction. A large diameter portion 23b is formed on the upper side of the small diameter portion 23a of the first valve member 23. The tapered outer peripheral surface 24 is formed so that the outer peripheral wall of the large-diameter portion 23b approaches the axial center as it goes upward, and has a mounting groove 25 formed in the circumferential direction. An O-ring 26, which is a sealing member, is mounted in the mounting groove 25, a first valve surface 27 is formed on the outer peripheral portion of the O-ring 26, and the first valve surface 27 is the first valve seat 21 of the valve case 15. It is possible to contact with. The O-ring 26 is formed of an elastic body such as rubber or resin. Further, the diameter of the O-ring 26 before mounting is set to be the same as or smaller than the diameter of the bottom wall of the mounting groove 25. Therefore, even if an external force is applied to the O-ring 26 after mounting in a direction away from the mounting groove 25, the O-ring 26 is urged toward the bottom wall of the mounting groove 25 by its own elastic restoring force. Further, a gap is formed between the lower end surface of the O-ring 26 and the vicinity of the peripheral edge of the mounting groove 25. More specifically, the gap 31 is formed at a lower position in the axial direction from the position where the first valve surface 27 and the first valve seat 21 abut. Therefore, when the first valve surface 27 engages with the first valve seat 21, the outer portion retracts into the gap 31 while maintaining the inner portion of the O-ring 26 in close contact with or close to the mounting groove 25. ..

上記の案内部材２２と第１弁部材２３の大径部分２３ａとの間に、第１閉弁バネ（第１付勢手段）２８が装着され、その第１閉弁バネ２８が第１弁部材２３を弁ケース１５の突出部分１５ｃに向けて押圧している。このため、その第１弁面２７が第１弁座２１に当接している。 A first valve closing spring (first urging means) 28 is mounted between the guide member 22 and the large diameter portion 23a of the first valve member 23, and the first valve closing spring 28 is the first valve member. 23 is pressed toward the protruding portion 15c of the valve case 15. Therefore, the first valve surface 27 is in contact with the first valve seat 21.

上記の第１給排路７は、第１弁座２１および第１弁面２７の間に形成された開弁隙間と、弁ケース１５の内周孔と、案内部材２２に形成される連通孔２９と、内筒１２に形成される第１給排口３０と、によって構成される。 The first supply / discharge passage 7 is a valve opening gap formed between the first valve seat 21 and the first valve surface 27, an inner peripheral hole of the valve case 15, and a communication hole formed in the guide member 22. It is composed of 29 and a first supply / discharge port 30 formed in the inner cylinder 12.

上記可動ブロック２に第２継手６の第２ケーシング（ケーシング）４０がボルトによって固定される。その第２ケーシング４０に装着孔４１が形成され、その装着孔４１の底壁に弁座部材４２が下方へ突設される。その弁座部材４２の下側外周壁にテーパ外周面４３が上方へ向かうにつれて先細りするように周方向に形成され、そのテーパ外周面４３の上側に連続するように逃がし面４４が形成される。テーパ外周面４３と逃がし面４４とによって角が形成される。なお、本実施形態の逃がし面４４は、弁座部材４２の軸心に対して垂直となるように形成されているが、これに限定されず、テーパ外周面４３に対して交差するように構成されていればよい。また、本実施形態の角部が曲面加工されており、その加工がされた部分（テーパ外周面４３と逃がし面４４との接続部分）とテーパ外周面４３の下端部とに第２弁座４５が周方向に形成される。上記の装着孔４１に筒状の第２弁部材４６が封止部材を介して保密状で上下方向へ移動可能に挿入される。その第２弁部材４６の下端側内周壁に上方に向かうにつれて先細りするテーパ内周面４６ａが形成され、そのテーパ内周面４６ａに装着溝４７が周方向に形成される。その装着溝４７に封止部材としてのＯリング４８が装着される。そのＯリング４８の外周壁に第２弁面４９が周方向に形成され、その第２弁面４９が上記の第２弁座４５に上側から当接可能となっている。そのＯリング４８は、ゴム又は樹脂等の弾性体によって形成されている。
上記のＯリング４８の下面と装着溝４７の周壁との間に隙間５０が形成される。このため、第２弁面４９が第２弁座４５に係合したときに、Ｏリング４８の外側部分が装着溝４７に密着もしくは近接した状態を維持しながら、外側部分が隙間５０に退避する。 The second casing (casing) 40 of the second joint 6 is fixed to the movable block 2 by bolts. A mounting hole 41 is formed in the second casing 40, and a valve seat member 42 is projected downward from the bottom wall of the mounting hole 41. A tapered outer peripheral surface 43 is formed on the lower outer peripheral wall of the valve seat member 42 in the circumferential direction so as to taper upward, and a relief surface 44 is formed so as to be continuous on the upper side of the tapered outer peripheral surface 43. A corner is formed by the tapered outer peripheral surface 43 and the relief surface 44. The relief surface 44 of the present embodiment is formed so as to be perpendicular to the axial center of the valve seat member 42, but is not limited to this, and is configured to intersect the tapered outer peripheral surface 43. It suffices if it is done. Further, the corner portion of the present embodiment is curved, and the second valve seat 45 is formed on the processed portion (the connecting portion between the tapered outer peripheral surface 43 and the relief surface 44) and the lower end portion of the tapered outer peripheral surface 43. Is formed in the circumferential direction. A tubular second valve member 46 is tightly inserted into the mounting hole 41 via a sealing member so as to be movable in the vertical direction. A tapered inner peripheral surface 46a that tapers upward toward the lower end side inner peripheral wall of the second valve member 46 is formed, and a mounting groove 47 is formed in the tapered inner peripheral surface 46a in the circumferential direction. An O-ring 48 as a sealing member is mounted in the mounting groove 47. A second valve surface 49 is formed on the outer peripheral wall of the O-ring 48 in the circumferential direction, and the second valve surface 49 can come into contact with the second valve seat 45 from above. The O-ring 48 is formed of an elastic body such as rubber or resin.
A gap 50 is formed between the lower surface of the O-ring 48 and the peripheral wall of the mounting groove 47. Therefore, when the second valve surface 49 engages with the second valve seat 45, the outer portion of the O-ring 48 is retracted into the gap 50 while maintaining a state of being in close contact with or close to the mounting groove 47. ..

上記の装着孔４１の底壁と第２弁部材４６との間に第２閉弁バネ（第２付勢手段）５３が装着され、その第２閉弁バネ５３が第２弁部材４６を弁座部材４２に向けて付勢している。このため、その第２弁面４９が第２弁座４５に上側から当接可能となっている。 A second valve closing spring (second urging means) 53 is mounted between the bottom wall of the mounting hole 41 and the second valve member 46, and the second valve closing spring 53 valves the second valve member 46. It is urging toward the seat member 42. Therefore, the second valve surface 49 can come into contact with the second valve seat 45 from above.

上記の第２給排路８は、第２弁座４３と第２弁面４６との間に形成された開弁隙間と、装着孔４１と、その装着孔４１の底壁に形成された連通孔５４と、第２ケーシング４０の上部に形成された第２給排口５５とによって構成される。 The second supply / discharge passage 8 is a communication formed in the valve opening gap formed between the second valve seat 43 and the second valve surface 46, the mounting hole 41, and the bottom wall of the mounting hole 41. It is composed of a hole 54 and a second supply / discharge port 55 formed in the upper part of the second casing 40.

上記の第２弁部材４５の下壁に溝５６が下方へ開口するように周方向に形成され、その溝５２に封止部材５７が装着される。これにより、上記の弁ケース１５が上方へロック駆動したときに、弁ケース１５の上端面が上記の封止部材５７に当接される（図２を参照）。 A groove 56 is formed in the lower wall of the second valve member 45 in the circumferential direction so as to open downward, and the sealing member 57 is mounted in the groove 52. As a result, when the valve case 15 is locked and driven upward, the upper end surface of the valve case 15 is brought into contact with the sealing member 57 (see FIG. 2).

上記のカップリング装置は、図１及び図２に示すように、次のように作動する。
図１の分離状態では、第１継手５のロック室１６から圧油が排出されると共に、リリースバネ１８が弁ケース１５を下方へ移動させている。また、第１閉弁バネ２８が第１弁部材２３を上方に移動させている。
上記の第２継手６では、第２閉弁バネ５３が第２弁部材４６を下方に移動させている。 The coupling device operates as follows, as shown in FIGS. 1 and 2.
In the separated state of FIG. 1, pressure oil is discharged from the lock chamber 16 of the first joint 5, and the release spring 18 moves the valve case 15 downward. Further, the first valve closing spring 28 moves the first valve member 23 upward.
In the second joint 6 described above, the second valve closing spring 53 moves the second valve member 46 downward.

前記の可動ブロック２を図１の分離状態から図２の連結状態に切換えるときには、まず、図１に示すように、第２継手６を第１継手５の上方へ移動する。次いで、第２継手６を下方へ移動させていくと、弁ケース１５の突出部分１５ｃの上面に第２弁部材４６の封止部材５６が当接する。さらに、図２に示すように、第１継手５の支持面１０ｂに第２継手６の被支持面４０ａが当接する。
次いで、ロック室１６に圧油を供給すると、弁ケース１５がリリースバネ１８に抗して上方へ移動されていき、その弁ケース１５が第２弁部材４６を第２閉弁バネ５３に抗して上方へ移動させていく。次いで、弁ケース１５の上端部が、第２継手６の収容孔５８に挿入されていき、第２弁部材４６の第２弁面４９が弁座部材４２の第２弁座４５から離間されて開弁される。これと同時に、第１弁部材２３の大径部分２３ｂの上面が弁座部材４２の下面に当接されることにより、第１弁部材２３の第１弁面２７が弁ケース１５の第１弁座２１から離間されて開弁される。このため、第１継手５の第１給排路７と第２継手６の第２給排路８とが連通される。
最後に、図３に示すように、弁ケース１５が収容孔５８の底壁に受け止められ、第１継手５と第２継手６とが連結される。 When switching the movable block 2 from the separated state of FIG. 1 to the connected state of FIG. 2, first, as shown in FIG. 1, the second joint 6 is moved above the first joint 5. Next, when the second joint 6 is moved downward, the sealing member 56 of the second valve member 46 comes into contact with the upper surface of the protruding portion 15c of the valve case 15. Further, as shown in FIG. 2, the supported surface 40a of the second joint 6 comes into contact with the support surface 10b of the first joint 5.
Next, when pressure oil is supplied to the lock chamber 16, the valve case 15 is moved upward against the release spring 18, and the valve case 15 opposes the second valve member 46 against the second closing spring 53. And move it upwards. Next, the upper end of the valve case 15 is inserted into the accommodating hole 58 of the second joint 6, and the second valve surface 49 of the second valve member 46 is separated from the second valve seat 45 of the valve seat member 42. The valve is opened. At the same time, the upper surface of the large diameter portion 23b of the first valve member 23 is brought into contact with the lower surface of the valve seat member 42, so that the first valve surface 27 of the first valve member 23 becomes the first valve of the valve case 15. The valve is opened apart from the seat 21. Therefore, the first supply / discharge passage 7 of the first joint 5 and the second supply / discharge passage 8 of the second joint 6 are communicated with each other.
Finally, as shown in FIG. 3, the valve case 15 is received by the bottom wall of the accommodating hole 58, and the first joint 5 and the second joint 6 are connected.

上記のカップリング装置を図２の連結状態から図１の分離状態へ切換えるときには、まず、ロック室１６から圧油を排出すると、リリースバネ１８が弁ケース１５を下方へ移動させる。すると、第２閉弁バネ５３が第２弁部材４６を下方へ移動させると共に、第１閉弁バネ２８が第１弁部材２３を閉弁方向へ移動させる。これにより、第１弁部材２３の第１弁面２７が第１ケーシング１０の第１弁座２１に当接して閉弁されると共に、第２弁部材４６の第２弁面４９が弁座部材４２の第２弁座４５に当接して閉弁する。
その後可動ブロック２を上方へ搬出すると、図１に示すように、第２継手６が第１継手５から分離される。 When switching the coupling device from the connected state of FIG. 2 to the separated state of FIG. 1, first, when the pressure oil is discharged from the lock chamber 16, the release spring 18 moves the valve case 15 downward. Then, the second valve closing spring 53 moves the second valve member 46 downward, and the first valve closing spring 28 moves the first valve member 23 in the valve closing direction. As a result, the first valve surface 27 of the first valve member 23 comes into contact with the first valve seat 21 of the first casing 10 to close the valve, and the second valve surface 49 of the second valve member 46 becomes the valve seat member. The valve is closed by abutting on the second valve seat 45 of 42.
After that, when the movable block 2 is carried upward, the second joint 6 is separated from the first joint 5 as shown in FIG.

上記実施形態の開閉弁装置は、図３Ｄから図３Ｆに示す従来の開閉弁装置に比べて次の点で優れている。
従来の開閉弁装置では、筒状の弁部材６４の薄肉部６９を塑性変形させて、装着溝６７の周壁が封止部材６８を把持することにより、封止部材６８を弁部材６４に固定している。このため、装着溝６７の周壁が封止部材６８を均一に押圧しなければ、封止部材６８の外周面の高さや、封止部材６８の弾性にムラ、封止部材６８のねじれが生じるおそれがある。また、装着溝６７の周壁が封止部材６８を押圧しているので、その開閉弁装置を閉弁させるときに、押圧力に抗して弁部材６４を弁座６３に向けて強力に押す必要がある。また、従来の開閉弁装置を図３Ｄの閉弁状態から図３Ｆの開弁状態に切り換える途中において、図３Ｅに示すように、弁ケース６０のテーパ内周面６２全体によって構成される弁座６３から、弁面６３が当該弁座６３に対して広い面積で密着した状態で弁ケース６０の突起部６１から弁部材６４が離間されるので、装着溝６７から封止部材６８を引きはがそうとする力が作用する。このため、封止部材６８が摩耗したり破損したり、装着溝６７から離脱したり、装着溝６７内でよじれたりするおそれがある。
これに対して、本実施形態の開閉弁装置では、弁部材２３，４６に形成される装着溝２５，４７にＯリング２６，４８が装着溝２５，４７の周壁によって押圧されることなく均一に装着される。また、Ｏリング２６，４８は、装着溝２５，４７の周壁によって押圧されていないので、小さな押圧力によって弾性変形できる。すなわち、閉弁バネ２８，５３のバネ定数を小さく設定でき、バネを小さくできる。さらに、本実施形態の開閉弁装置では、弁座２１，４５に隣接して逃がし面２０，４０が形成されると共に、弁部材２３，４６の軸方向であって弁面２７，４９の反対側外周面と、装着溝２５，４７の周壁との間に隙間３１，５０が形成される。このため、Ｏリング２６，４８の個体差による大きさのばらつきがあっても、Ｏリング２６，４８が隙間３１，５０に退避してばらつきを吸収できる。また、逃がし面２０，４０を設けることにより、弁面２７，４９と弁座２１，４５との接触面積を小さくできるので、離間時に装着溝６７から封止部材６８を引きはがそうとする力が作用しにくい。 The on-off valve device of the above embodiment is superior to the conventional on-off valve devices shown in FIGS. 3D to 3F in the following points.
In the conventional on-off valve device, the thin portion 69 of the tubular valve member 64 is plastically deformed, and the peripheral wall of the mounting groove 67 grips the sealing member 68 to fix the sealing member 68 to the valve member 64. ing. Therefore, if the peripheral wall of the mounting groove 67 does not uniformly press the sealing member 68, the height of the outer peripheral surface of the sealing member 68, the elasticity of the sealing member 68 may be uneven, and the sealing member 68 may be twisted. There is. Further, since the peripheral wall of the mounting groove 67 presses the sealing member 68, it is necessary to strongly push the valve member 64 toward the valve seat 63 against the pressing force when closing the on-off valve device. There is. Further, while the conventional on-off valve device is being switched from the valve closed state of FIG. 3D to the valve opened state of FIG. 3F, as shown in FIG. 3E, the valve seat 63 is composed of the entire tapered inner peripheral surface 62 of the valve case 60. Therefore, the valve member 64 is separated from the protrusion 61 of the valve case 60 in a state where the valve surface 63 is in close contact with the valve seat 63 over a wide area, so that the sealing member 68 can be peeled off from the mounting groove 67. The force to act. Therefore, the sealing member 68 may be worn or damaged, separated from the mounting groove 67, or twisted in the mounting groove 67.
On the other hand, in the on-off valve device of the present embodiment, the O-rings 26 and 48 are uniformly not pressed by the peripheral walls of the mounting grooves 25 and 47 in the mounting grooves 25 and 47 formed in the valve members 23 and 46. It is installed. Further, since the O-rings 26 and 48 are not pressed by the peripheral walls of the mounting grooves 25 and 47, they can be elastically deformed by a small pressing force. That is, the spring constants of the valve closing springs 28 and 53 can be set small, and the springs can be made small. Further, in the on-off valve device of the present embodiment, relief surfaces 20 and 40 are formed adjacent to the valve seats 21 and 45, and the valve members 23 and 46 are axially opposite to the valve surfaces 27 and 49. Spaces 31 and 50 are formed between the outer peripheral surface and the peripheral walls of the mounting grooves 25 and 47. Therefore, even if there is a size variation due to individual differences in the O-rings 26 and 48, the O-rings 26 and 48 can be retracted into the gaps 31 and 50 to absorb the variation. Further, by providing the relief surfaces 20 and 40, the contact area between the valve surfaces 27 and 49 and the valve seats 21 and 45 can be reduced, so that the force for peeling the sealing member 68 from the mounting groove 67 at the time of separation can be reduced. Is hard to work.

上記の各実施形態は次のように変更可能である。
上記の実施形態では、開閉弁装置が、カップリング装置内に備えられるが、これに限らず、他の弁装置、例えば逆止弁、減圧弁、リリーフ弁などに適用してもよい。
上記のテーパ内周面およびテーパ外周面は、軸方向に対してテーパ状に形成されることに限られず、鉛直面であってもよい。
その他に、当業者が想定できる範囲で種々の変更を行えることは勿論である。 Each of the above embodiments can be modified as follows.
In the above embodiment, the on-off valve device is provided in the coupling device, but the present invention is not limited to this, and other valve devices such as a check valve, a pressure reducing valve, and a relief valve may be applied.
The tapered inner peripheral surface and the tapered outer peripheral surface are not limited to being formed in a tapered shape in the axial direction, and may be in a vertical plane.
In addition, it goes without saying that various changes can be made within the range that can be assumed by those skilled in the art.

Claims (2)

筒状のケーシング（１５）の内周壁にその筒孔の軸方向の先端側へ向かうにつれて先細りするように形成されるテーパ内周面（１９）と、
前記テーパ内周面（１９）の前記軸方向の基端側に連続するように形成される逃がし面（２０）であって、前記テーパ内周面（１９）に交差するように形成される逃がし面（２０）と、
前記テーパ内周面（１９）の前記軸方向の基端側部分に形成される第１弁座（２１）と、
前記ケーシング（１５）の筒孔内に前記軸方向に移動可能に挿入される第１弁部材（２３）と、
前記第１弁部材（２３）の外周壁に前記先端側へ向かうにつれて軸心に近づくように形成されるテーパ外周面（２４）と、
前記テーパ外周面（２４）に周方向に開口される装着溝（２５）と、
前記装着溝（２５）に装着される封止部材（２６）と、
前記封止部材（２６）の外周壁に形成されると共に、前記第１弁座（２１）に当接可能となっている第１弁面（２７）と、
前記封止部材（２６）の前記軸方向の基端側外周面と前記装着溝（２５）の前記軸方向の基端側内周面との間に形成される隙間（３１）と、を備える、
ことを特徴とする開閉弁装置。 A tapered inner peripheral surface (19) formed on the inner peripheral wall of the tubular casing (15) so as to taper toward the axially tip side of the tubular hole.
A relief surface (20) formed so as to be continuous with the proximal end side of the tapered inner peripheral surface (19) in the axial direction, and is formed so as to intersect the tapered inner peripheral surface (19). Face (20) and
A first valve seat (21) formed on the axially proximal end side portion of the tapered inner peripheral surface (19),
A first valve member (23) movably inserted in the tubular hole of the casing (15) in the axial direction, and a first valve member (23).
A tapered outer peripheral surface (24) formed on the outer peripheral wall of the first valve member (23) so as to approach the axial center toward the tip side.
A mounting groove (25) opened in the circumferential direction on the tapered outer peripheral surface (24),
The sealing member (26) mounted in the mounting groove (25) and
A first valve surface (27) formed on the outer peripheral wall of the sealing member (26) and capable of contacting the first valve seat (21).
The sealing member (26) is provided with a gap (31) formed between the outer peripheral surface on the proximal end side in the axial direction and the inner peripheral surface on the proximal end side in the axial direction of the mounting groove (25). ,
An on-off valve device characterized by this. ケーシング（４０）に形成される装着孔（４１）と、
前記装着孔（４１）の底壁に当該装着孔（４１）の軸方向の先端側へ突設される弁座部材（４２）と、
前記弁座部材（４２）に前記基端側へ向かうにつれて先細りするように周方向に形成されるテーパ外周面（４３）と、
前記テーパ外周面（４３）の前記軸方向の基端側に連続するように形成されると共に、テーパ外周面４３と交差する逃がし面（４４）と、
前記テーパ外周面（４３）の前記軸方向の基端側に周方向に形成される第２弁座（４５）と、
前記装着孔（４１）に前記軸方向に移動可能に挿入される筒状の第２弁部材（４６）と、
前記第２弁部材（４６）の内周壁に前記軸方向の基端側に向かうにつれて先細りするように形成されるテーパ内周面（４６ａ）と、前記テーパ内周面（４６ａ）に周方向に開口される装着溝（４７）に装着される封止部材（４８）と、
前記封止部材（４８）の外周壁に周方向に形成されると共に、前記第２弁座（４５）に当接可能となっている第２弁面（４９）と、
前記封止部材（４８）の前記軸方向の基端側外周面と前記装着溝（４７）の前記基端側内周面との間に形成される隙間（５０）と、を備える、
ことを特徴とする開閉弁装置。 A mounting hole (41) formed in the casing (40) and
A valve seat member (42) projecting from the bottom wall of the mounting hole (41) toward the tip side in the axial direction of the mounting hole (41),
A tapered outer peripheral surface (43) formed on the valve seat member (42) in the circumferential direction so as to taper toward the base end side.
A relief surface (44) that is formed so as to be continuous with the base end side of the tapered outer peripheral surface (43) in the axial direction and intersects the tapered outer peripheral surface 43.
A second valve seat (45) formed in the circumferential direction on the axially proximal side of the tapered outer peripheral surface (43),
A tubular second valve member (46) that is movably inserted into the mounting hole (41) in the axial direction.
A tapered inner peripheral surface (46a) formed on the inner peripheral wall of the second valve member (46) so as to taper toward the proximal end side in the axial direction, and a tapered inner peripheral surface (46a) in the circumferential direction. A sealing member (48) mounted in the mounted groove (47) to be opened, and
A second valve surface (49) formed on the outer peripheral wall of the sealing member (48) in the circumferential direction and capable of contacting the second valve seat (45).
A gap (50) formed between the axially proximal outer peripheral surface of the sealing member (48) and the proximal inner peripheral surface of the mounting groove (47) is provided.
An on-off valve device characterized by this.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023022008A1 (en) * 2021-08-18 2023-02-23 株式会社コスメック Coupling device

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JPS5650865U (en) * 1979-09-28 1981-05-06
JPS5670262U (en) * 1979-11-02 1981-06-10
US4327770A (en) * 1979-11-23 1982-05-04 Outboard Marine Corporation Quick disconnect fluid line coupling
US4442863A (en) * 1981-04-30 1984-04-17 Systron Donner Corp. Fluid line coupling device
JPS6439972U (en) * 1987-09-04 1989-03-09
JPH0280287U (en) * 1988-08-11 1990-06-20
JPH10141516A (en) * 1996-11-12 1998-05-29 Ckd Corp High pressure solenoid valve
JP2001505642A (en) * 1996-12-03 2001-04-24 エアロクイップ コーポレイション Low outflow quick fitting
JP2006153204A (en) * 2004-11-30 2006-06-15 Kitz Corp Needle valve
JP2015028381A (en) * 2013-06-28 2015-02-12 シュトイブリー・ファベルゲ Female quick connection element and quick connection including such a element

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JP7083484B2 (en) 2018-05-29 2022-06-13 株式会社テージーケー Control valve

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JPS5650865U (en) * 1979-09-28 1981-05-06
JPS5670262U (en) * 1979-11-02 1981-06-10
US4327770A (en) * 1979-11-23 1982-05-04 Outboard Marine Corporation Quick disconnect fluid line coupling
US4442863A (en) * 1981-04-30 1984-04-17 Systron Donner Corp. Fluid line coupling device
JPS6439972U (en) * 1987-09-04 1989-03-09
JPH0280287U (en) * 1988-08-11 1990-06-20
JPH10141516A (en) * 1996-11-12 1998-05-29 Ckd Corp High pressure solenoid valve
JP2001505642A (en) * 1996-12-03 2001-04-24 エアロクイップ コーポレイション Low outflow quick fitting
JP2006153204A (en) * 2004-11-30 2006-06-15 Kitz Corp Needle valve
JP2015028381A (en) * 2013-06-28 2015-02-12 シュトイブリー・ファベルゲ Female quick connection element and quick connection including such a element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023022008A1 (en) * 2021-08-18 2023-02-23 株式会社コスメック Coupling device

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