JP2007327614A - Valve sealing structure - Google Patents

Valve sealing structure Download PDF

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JP2007327614A
JP2007327614A JP2006160763A JP2006160763A JP2007327614A JP 2007327614 A JP2007327614 A JP 2007327614A JP 2006160763 A JP2006160763 A JP 2006160763A JP 2006160763 A JP2006160763 A JP 2006160763A JP 2007327614 A JP2007327614 A JP 2007327614A
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rubber
valve
elastic body
pair
seal structure
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Koji Tsukamoto
浩司 塚本
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Nok Corp
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Nok Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a valve sealing structure that prevents breakage of a rubber-like elastic body constituting one of a pair of sealing elements while suppressing the occurrence of a protrusion phenomenon in the rubber-like elastic body in the valve sealing structure in which a pair of the sealing elements is brought into contact with each other or separated from each other in accordance with valve opening/closing operation. <P>SOLUTION: A pair of the sealing elements is composed of a combination of a rigid component such as a metal and the rubber-like elastic body. It is composed so as to set a multiple-stage sealing structure 7 in which a plurality of annular protrusions 6 provided on the rubber-like elastic body 5 are simultaneously brought into contact with or separated from the rigid component. High pressure that causes the protrusion is thereby reduced. Alternatively, a pair of the sealing elements is composed of the combination of the rigid component such as a metal and the rubber-like elastic body. It is composed so as to set a multiple-stage sealing structure in which a plurality of annular protrusions provided on the rigid component are simultaneously brought into contact with or separated from the rubber-like elastic body. High pressure that causes the protrusion is thereby reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、バルブの開閉作動に合わせて一対のシール要素が互いに接離する構造のバルブのシール構造に関するものである。本発明のシール構造は例えば、燃料電池用高圧ガスバルブの開閉作動部に用いられる。   The present invention relates to a valve seal structure in which a pair of seal elements come in contact with and separate from each other in accordance with the opening and closing operation of the valve. The seal structure of the present invention is used, for example, in an opening / closing operation part of a high pressure gas valve for a fuel cell.

図７に示す従来のバルブ装置５１においてはその閉弁作動時、図８（Ａ）に示すように弁体５２がゴムリップ（外側シール部）５３および金属部（内側シール部）５４に順次当接するように構成され、すなわち先ずゴムリップ５３に当接してから金属部５４に当接するように構成されている。   In the conventional valve device 51 shown in FIG. 7, when the valve is closed, the valve body 52 sequentially contacts the rubber lip (outer seal portion) 53 and the metal portion (inner seal portion) 54 as shown in FIG. That is, it is configured such that it first contacts the rubber lip 53 and then contacts the metal portion 54.

しかしながらこの構造によると、シールすべきガス圧力の高圧化に伴ってゴムリップ５３が圧力に押されて変形し、はみ出し現象を生じることから、図８（Ｂ）に示すようにゴムリップ５３が弁体５２と金属部５４との間に挟まれて破損してしまうことがある。   However, according to this structure, as the gas pressure to be sealed is increased, the rubber lip 53 is pushed by the pressure and deforms, resulting in a protrusion phenomenon. Therefore, as shown in FIG. And the metal part 54 may be damaged.

特開平９−１５０７２８号公報JP-A-9-150728

本発明は以上の点に鑑みて、一方のシール要素をなすゴム状弾性体にはみ出し現象が発生するのを抑えることができ、もってその破損を防止することが可能なバルブのシール構造を提供することを目的とする。   In view of the above, the present invention provides a valve seal structure that can suppress the occurrence of a protrusion phenomenon in a rubber-like elastic body constituting one sealing element, and can prevent the damage. For the purpose.

上記目的を達成するため、本発明の請求項１によるシール構造は、バルブの開閉作動に合わせて一対のシール要素が互いに接離する構造のバルブのシール構造において、前記一対のシール要素は、金属等の剛性部品とゴム状弾性体との組み合わせよりなり、前記ゴム状弾性体に設けた複数の環状突起が同時に前記剛性部品に接離する複数段シール構造を有することを特徴とするものである。   In order to achieve the above object, a seal structure according to claim 1 of the present invention is a valve seal structure in which a pair of seal elements come in contact with and separate from each other in accordance with the opening / closing operation of the valve. It has a multi-stage seal structure in which a plurality of annular protrusions provided on the rubber-like elastic body are simultaneously contacted and separated from the rigid part. .

また、本発明の請求項２によるシール構造は、バルブの開閉作動に合わせて一対のシール要素が互いに接離する構造のバルブのシール構造において、前記一対のシール要素は、金属等の剛性部品とゴム状弾性体との組み合わせよりなり、前記剛性部品に設けた複数の環状突起が同時に前記ゴム状弾性体に接離する複数段シール構造を有することを特徴とするものである。   Further, the seal structure according to claim 2 of the present invention is a valve seal structure in which a pair of seal elements come in contact with and separate from each other in accordance with the opening / closing operation of the valve. It is a combination with a rubber-like elastic body, and has a multi-stage seal structure in which a plurality of annular projections provided on the rigid component are simultaneously contacted and separated from the rubber-like elastic body.

また、本発明の請求項３によるシール構造は、上記した請求項２記載のシール構造において、ゴム状弾性体は、これも環状突起に合わせて複数が配置されていることを特徴とするものである。   The seal structure according to claim 3 of the present invention is the seal structure according to claim 2, wherein a plurality of rubber-like elastic bodies are also arranged in accordance with the annular protrusions. is there.

本発明は、以下の効果を奏する。   The present invention has the following effects.

すなわち、上記構成を備えた本発明の請求項１または２によるシール構造においては、一対のシール要素をなす剛性部品およびゴム状弾性体間に複数段シール構造を設けるようにしたために、この複数段シール構造が発揮する蓄圧作用によって高圧を徐々に減圧させることが可能とされている。高圧が減圧されるとゴム状弾性体の末端部はもはや、はみ出し現象を生じるほど大きく変形しないことになる。したがって、ゴム状弾性体にはみ出し現象が発生するのを抑えることができ、もってその破損を防止することができる。   That is, in the seal structure according to claim 1 or 2 of the present invention having the above-described configuration, since the multi-stage seal structure is provided between the rigid parts constituting the pair of seal elements and the rubber-like elastic body, the multi-stage seal structure is provided. The high pressure can be gradually reduced by the pressure accumulating action exhibited by the seal structure. When the high pressure is reduced, the end of the rubber-like elastic body will no longer be deformed so much as to cause the protrusion phenomenon. Therefore, it is possible to suppress the occurrence of the protrusion phenomenon in the rubber-like elastic body, and thus it is possible to prevent the damage.

またこれに加えて、本発明の請求項３によるシール構造においては、複数の環状突起を剛性部品側に設ける場合にゴム状弾性体も合わせて複数配置するようにしたために、複数のゴム状弾性体は単品ごとにその特性を設定することが可能とされている。したがって例えば、高圧側に配置するゴム状弾性体には耐圧・耐破損性重視の設定を行ない、低圧側に配置するゴム状弾性体にはシール性重視の設定を行なうと云ったことが可能となるので、これにより広くバルブシールの性能向上を実現することができる。   In addition to this, in the seal structure according to claim 3 of the present invention, when a plurality of annular protrusions are provided on the rigid component side, a plurality of rubber-like elastic bodies are also arranged. The body can be set for each item. Therefore, for example, it can be said that the rubbery elastic body arranged on the high pressure side is set with an emphasis on pressure resistance and breakage resistance, and the rubbery elastic body arranged on the low pressure side is set with an emphasis on sealing performance. Therefore, the valve seal performance can be improved widely.

つぎに本発明の実施例を図面にしたがって説明する。   Next, embodiments of the present invention will be described with reference to the drawings.

第一実施例・・・
図１は、本発明の第一実施例に係るバルブのシール構造を示している。 First embodiment ...
FIG. 1 shows a valve seal structure according to a first embodiment of the present invention.

当該実施例に係るシール構造は、バルブの開閉作動に合わせて一対のシール要素が互いに接離するものであって、一対のシール要素は、金属等の剛性部品である弁体１と弁座側のゴム状弾性体５との組み合わせよりなり、この弁体１およびゴム状弾性体５の間に、ゴム状弾性体５に設けた複数の環状突起（ビード）６が弁体１に対して同時に接離する複数段シール構造７が設けられている。   The seal structure according to this embodiment is such that a pair of seal elements come in contact with and separate from each other in accordance with the opening / closing operation of the valve. A plurality of annular protrusions (beads) 6 provided on the rubber-like elastic body 5 between the valve-like body 1 and the rubber-like elastic body 5 at the same time with respect to the valve-body 1. A multi-stage seal structure 7 that contacts and separates is provided.

ゴム状弾性体５は、環状に成形され、バルブボディ２の弁座部３に設けた環状の装着溝４に装着されている。装着溝４およびゴム状弾性体５は共に断面矩形状に成形されている。ゴム状弾性体５の表面には環状突起６が複数同心状に一体成形されている。図では環状突起６が四つ同心状に一体成形されているが、その形成数は二つ以上であれば特に限定されない。各突起６の形状や大きさは同じとされているが、互いに異なるように設定しても良い。各突起６の先端部は装着溝４から突出していて、バルブボディ２の端面部２ａよりも弁体１側に配置されている。   The rubber-like elastic body 5 is formed in an annular shape and is attached to an annular attachment groove 4 provided in the valve seat portion 3 of the valve body 2. The mounting groove 4 and the rubber-like elastic body 5 are both formed into a rectangular cross section. A plurality of annular protrusions 6 are integrally formed on the surface of the rubber-like elastic body 5 concentrically. In the figure, four annular protrusions 6 are integrally formed concentrically, but the number of formation is not particularly limited as long as it is two or more. Although the shape and size of each protrusion 6 are the same, they may be set different from each other. The tip of each protrusion 6 protrudes from the mounting groove 4 and is disposed closer to the valve body 1 than the end surface 2 a of the valve body 2.

弁体１は、金属または硬質樹脂等の剛材によって成形され、各突起６が接離自在に密接する平面状の当接面１ａを有している。   The valve body 1 is formed of a rigid material such as metal or hard resin, and has a flat contact surface 1a in which the protrusions 6 come into close contact with each other.

図１（Ａ）はバルブの弁開状態を示しており、高圧側空間Ｈから低圧側空間Ｌへ高圧ガスが流れている。この弁開状態からバルブが閉弁作動して弁体１がバルブボディ２に近付く方向に移動すると、図１（Ｂ）に示すように弁体１の当接面１ａが各突起６の先端部に当接し、各突起６を若干変形させた状態で停止し、弁閉のシール状態が実現されることになる。   FIG. 1A shows a valve open state, in which high pressure gas flows from the high pressure side space H to the low pressure side space L. When the valve is closed from this open state and the valve body 1 moves in a direction approaching the valve body 2, the contact surface 1 a of the valve body 1 becomes the tip of each protrusion 6 as shown in FIG. And the projections 6 are stopped in a state of being slightly deformed, and a valve-sealed seal state is realized.

上記構成のシール構造において、バルブの閉弁作動時、図１（Ｂ）に示したように弁体１の当接面１ａが各突起６の先端部に当接すると、当該シール構造によって遮断されるバルブの高圧側空間Ｈと低圧側空間Ｌとの間には複数の突起６によって仕切られる中間空間が形成され、この中間空間において蓄圧作用が発揮される。図ではバルブの高圧側空間Ｈと低圧側空間Ｌとの間に突起６が四つ設けられているので中間空間Ｍ１，Ｍ２，Ｍ３が三箇所形成され、この中間空間Ｍ１，Ｍ２，Ｍ３がそれぞれ蓄圧作用を発揮し、結果、圧力は高圧側空間Ｈから低圧側空間Ｌへかけて中間空間Ｍ１，Ｍ２，Ｍ３ごとに徐々に低くなり、低圧となった最も低圧側の中間空間Ｍ３の圧力がその更に低圧側の突起６に作用してもこの突起６は殆ど変形することがない。したがって、ゴム状弾性体５にはみ出し現象が発生するのを抑えることができ、もってゴム状弾性体５が弁体１とバルブボディ２との間に挟まれて破損するのを防止することができる。また当該実施例では、ゴム状弾性体５が装着溝４内に収容されているので、これによってもゴム状弾性体５は圧力が作用しても変形しにくく設定されていると云うことができる。尚、当該実施例では、剛性部品が弁体を形成し、ゴム状弾性体が弁座を形成しているが、反対にゴム状弾性体が弁体を形成し、剛性部品が弁座を形成する構成であっても良く、この場合は、ゴム状弾性体が剛性部品に対して進退することになる。 In the seal structure having the above-described configuration, when the valve is closed, when the contact surface 1a of the valve body 1 comes into contact with the tip of each projection 6 as shown in FIG. An intermediate space partitioned by a plurality of protrusions 6 is formed between the high-pressure side space H and the low-pressure side space L of the valve, and a pressure accumulating action is exhibited in the intermediate space. In the figure, since four protrusions 6 are provided between the high pressure side space H and the low pressure side space L of the valve, three intermediate spaces M 1 , M 2 , M 3 are formed, and these intermediate spaces M 1 , M 3 are formed. 2 and M 3 each exert a pressure accumulation action. As a result, the pressure gradually decreases from the high-pressure side space H to the low-pressure side space L for each of the intermediate spaces M 1 , M 2 , and M 3 , and becomes the lowest pressure. the projection 6 also acts on the protrusions 6 of the pressure in the intermediate space M 3 of the low pressure side thereof further low pressure side never be hardly deformed. Therefore, it is possible to suppress the occurrence of the protruding phenomenon in the rubber-like elastic body 5, thereby preventing the rubber-like elastic body 5 from being sandwiched between the valve body 1 and the valve body 2 and being damaged. . Further, in this embodiment, since the rubber-like elastic body 5 is accommodated in the mounting groove 4, it can be said that the rubber-like elastic body 5 is set so as not to be deformed even when pressure is applied. . In this embodiment, the rigid part forms the valve body and the rubber-like elastic body forms the valve seat. Conversely, the rubber-like elastic body forms the valve body, and the rigid part forms the valve seat. In this case, the rubber-like elastic body advances and retreats with respect to the rigid component.

第二実施例・・・
図２は、本発明の第二実施例に係るバルブのシール構造を示している。 Second embodiment ...
FIG. 2 shows a valve seal structure according to a second embodiment of the present invention.

当該実施例に係るシール構造は、バルブの開閉作動に合わせて一対のシール要素が互いに接離するものであって、一対のシール要素は、金属等の剛性部品である弁体１１と弁座側のゴム状弾性体１６との組み合わせよりなり、この弁体１１およびゴム状弾性体１６の間に、弁体１１に設けた複数の環状突起１２がゴム状弾性体１６に対して同時に接離する複数段シール構造１７が設けられている。   The seal structure according to this embodiment is such that a pair of seal elements come in contact with and separate from each other in accordance with the opening / closing operation of the valve, and the pair of seal elements is a valve body 11 that is a rigid part such as metal and the valve seat side. The plurality of annular protrusions 12 provided on the valve body 11 are simultaneously contacted and separated from the rubber-like elastic body 16 between the valve body 11 and the rubber-like elastic body 16. A multi-stage seal structure 17 is provided.

環状突起１２は、金属または硬質樹脂等の剛材よりなる弁体１１の端面部１１ａにゴム状弾性体１６に向けて一体成形され、また複数が同心状に一体成形されている。図では環状突起１２は四つが同心状に一体成形されているが、その形成数は二つ以上であれば特に限定されない。各突起１２の形状や大きさは同じとされているが、互いに異なるように設定しても良い。   The annular protrusions 12 are integrally formed on the end surface portion 11a of the valve body 11 made of a rigid material such as metal or hard resin toward the rubber-like elastic body 16, and a plurality of the annular protrusions 12 are integrally formed concentrically. In the figure, four annular protrusions 12 are integrally formed concentrically, but there are no particular limitations as long as the number of the annular protrusions 12 is two or more. Although the shape and size of each protrusion 12 are the same, they may be set different from each other.

ゴム状弾性体１６は、環状に成形され、バルブボディ１３の弁座部１４に設けた環状の装着溝１５に装着されている。装着溝１５およびゴム状弾性体１６は共に断面矩形状に成形されている。またこのゴム状弾性体１６は、各突起１２が接離自在に密接する平面状の当接面１６ａを有している。   The rubber-like elastic body 16 is formed in an annular shape and is attached to an annular attachment groove 15 provided in the valve seat portion 14 of the valve body 13. The mounting groove 15 and the rubber-like elastic body 16 are both formed into a rectangular cross section. The rubber-like elastic body 16 has a flat contact surface 16a with which the protrusions 12 come into close contact with each other.

図２（Ａ）はバルブの弁開状態を示しており、高圧側空間Ｈから低圧側空間Ｌへと高圧ガスが流れている。この弁開状態からバルブが閉弁作動して弁体１１がバルブボディ１３に近付く方向に移動すると、図２（Ｂ）に示すように各環状突起１２がゴム状弾性体１６の当接面１６ａに当接し、若干食い込んだ状態で停止し、弁閉のシール状態が実現されることになる。   FIG. 2A shows a valve open state, in which high pressure gas flows from the high pressure side space H to the low pressure side space L. When the valve is closed from this open state and the valve body 11 moves in a direction approaching the valve body 13, each annular protrusion 12 is brought into contact with the contact surface 16a of the rubber-like elastic body 16, as shown in FIG. It stops in a state where it is in contact with and slightly bites, and a sealing state in which the valve is closed is realized.

上記構成のシール構造において、バルブの閉弁作動時、図２（Ｂ）に示したように各突起１２がゴム状弾性体１６の当接面１６ａに当接すると、当該シール構造によって遮断されるバルブの高圧側空間Ｈと低圧側空間Ｌとの間には複数の突起１２によって仕切られる中間空間が形成され、この中間空間において蓄圧作用が発揮される。図ではバルブの高圧側空間Ｈと低圧側空間Ｌとの間に突起１２が四つ設けられているので中間空間Ｍ１，Ｍ２，Ｍ３が三箇所形成され、この中間空間Ｍ１，Ｍ２，Ｍ３がそれぞれ蓄圧作用を発揮し、結果、圧力は高圧側空間Ｈから低圧側空間Ｌへかけて中間空間Ｍ１，Ｍ２，Ｍ３ごとに徐々に低くなり、低圧となった最も低圧側の中間空間Ｍ３の圧力がその更に低圧側の突起１２を漏れてゴム状弾性体１６の表面に作用することがあってもこの表面は殆ど変形することがない。したがって、ゴム状弾性体１６にはみ出し現象が発生するのを抑えることができ、もってゴム状弾性体１６が弁体１１とバルブボディ１３との間に挟まれて破損するのを防止することができる。また当該実施例では、ゴム状弾性体１６が装着溝１５内に収容されているので、これによってもゴム状弾性体１６は圧力が作用しても変形しにくく設定されていると云うことができる。尚、当該実施例では、剛性部品が弁体を形成し、ゴム状弾性体が弁座を形成しているが、反対にゴム状弾性体が弁体を形成し、剛性部品が弁座を形成する構成であっても良く、この場合は、ゴム状弾性体が剛性部品に対して進退することになる。 In the sealing structure having the above-described configuration, when each projection 12 comes into contact with the contact surface 16a of the rubber-like elastic body 16 as shown in FIG. An intermediate space partitioned by a plurality of protrusions 12 is formed between the high-pressure side space H and the low-pressure side space L of the valve, and a pressure accumulating action is exhibited in the intermediate space. In the figure, since four protrusions 12 are provided between the high-pressure side space H and the low-pressure side space L of the valve, three intermediate spaces M 1 , M 2 , M 3 are formed, and these intermediate spaces M 1 , M 3 are formed. 2 and M 3 each exert a pressure accumulating action. As a result, the pressure gradually decreases from the high-pressure side space H to the low-pressure side space L for each of the intermediate spaces M 1 , M 2 , and M 3. never pressure of the intermediate space M 3 of the low-pressure side even if the acting on the rubber-like elastic material 16 surface of the further leakage projections 12 of the low pressure side of the surface is hardly deformed. Accordingly, it is possible to prevent the rubber-like elastic body 16 from protruding and to prevent the rubber-like elastic body 16 from being sandwiched between the valve body 11 and the valve body 13 and being damaged. . Further, in this embodiment, since the rubber-like elastic body 16 is accommodated in the mounting groove 15, it can be said that the rubber-like elastic body 16 is set so as not to be deformed even when pressure is applied. . In this embodiment, the rigid part forms the valve body and the rubber-like elastic body forms the valve seat. Conversely, the rubber-like elastic body forms the valve body, and the rigid part forms the valve seat. In this case, the rubber-like elastic body advances and retreats with respect to the rigid component.

第三実施例・・・
上記第二実施例（図２）では、バルブボディ１３の弁座部１４にゴム状弾性体１６が一つのみ配置されているが、これを図３に示すように環状突起１２の形成数に合わせて複数配置するようにすると、高圧側空間Ｈから低圧側空間Ｌへかけて並べられる複数のゴム状弾性体１６ごとにその特性を設定することが可能となる。したがって例えば、高圧側に配置されるゴム状弾性体１６には耐圧・耐破損性に優れた形状を施すとともに低圧側に配置されるゴム状弾性体１６にはシール性に優れた形状を施すと云うように特性設定の自由度を拡大することができる。図３の複数のゴム状弾性体１６はそれぞれ別体とされるが、その製作に際しては図４に示すように一体で成形し、装着溝１５に嵌め込んでから平板状の連結部１６ｂを切除もしくは研摩すると良い。 Third embodiment ...
In the second embodiment (FIG. 2), only one rubber-like elastic body 16 is disposed on the valve seat 14 of the valve body 13, but this is the same as the number of annular protrusions 12 formed as shown in FIG. If a plurality of the elastic elastic bodies 16 are arranged in combination, the characteristics can be set for each of the plurality of rubber-like elastic bodies 16 arranged from the high-pressure side space H to the low-pressure side space L. Therefore, for example, when the rubber-like elastic body 16 arranged on the high-pressure side is given a shape excellent in pressure resistance and breakage resistance, and the rubber-like elastic body 16 arranged on the low-pressure side is given a shape excellent in sealing performance. As described above, the degree of freedom in setting the characteristics can be expanded. The plurality of rubber-like elastic bodies 16 shown in FIG. 3 are separated from each other, but when they are manufactured, they are integrally formed as shown in FIG. Or you can polish it.

第四実施例・・・
また、上記第二実施例（図２）では、突起１２を設けた弁体１１の端面部１１ａおよび、装着溝１５を設けてゴム状弾性体１６を装着したバルブボディ１３の端面部１３ａが何れも軸直角の平面状に設定されているが、これを図５および図６に示すようにそれぞれ、対応する円錐面状に設定するようにしても良い。ゴム状弾性体１６の装着数は一つでも良いが、図示するように複数設けることにより上記第三実施例と同様の作用効果を発揮することができる。図示の例では、各突起１２は円筒面１２ａと軸直角の平面１２ｂの組み合わせよりなる段差状に設定されている。また、各装着溝１５も円筒面１５ａと軸直角の平面１５ｂの組み合わせよりなる段差状に設定され、ここに断面直角三角形状のゴム状弾性体１６が装着されている。 Fourth embodiment ...
In the second embodiment (FIG. 2), the end surface portion 11a of the valve body 11 provided with the protrusion 12 and the end surface portion 13a of the valve body 13 provided with the mounting groove 15 and mounted with the rubber-like elastic body 16 are either Is also set to a plane perpendicular to the axis, but it may be set to a corresponding conical surface as shown in FIGS. The number of the rubber-like elastic bodies 16 may be one, but by providing a plurality of rubber-like elastic bodies 16 as shown in the drawing, the same function and effect as in the third embodiment can be exhibited. In the example shown in the drawing, each protrusion 12 is set in a stepped shape composed of a combination of a cylindrical surface 12a and a plane 12b perpendicular to the axis. Each mounting groove 15 is also set to have a step formed by a combination of a cylindrical surface 15a and a plane 15b perpendicular to the axis, and a rubber-like elastic body 16 having a right-angled triangular section is mounted thereon.

これら第三および第四実施例においても、ゴム状弾性体が弁体を形成し、剛性部品が弁座を形成する構成であっても良い。   In these third and fourth embodiments, the rubber-like elastic body may form a valve body and the rigid parts may form a valve seat.

本発明の第一実施例に係るシール構造を示す図で、（Ａ）はその弁開状態の断面図、（Ｂ）はその弁閉状態の断面図It is a figure which shows the seal structure which concerns on 1st Example of this invention, (A) is sectional drawing of the valve open state, (B) is sectional drawing of the valve closed state 本発明の第二実施例に係るシール構造を示す図で、（Ａ）はその弁開状態の断面図、（Ｂ）はその弁閉状態の断面図It is a figure which shows the seal structure which concerns on 2nd Example of this invention, (A) is sectional drawing of the valve open state, (B) is sectional drawing of the valve closed state 本発明の第三実施例に係るシール構造を示す図で、（Ａ）はその弁開状態の断面図、（Ｂ）はその弁閉状態の断面図It is a figure which shows the seal structure which concerns on 3rd Example of this invention, (A) is sectional drawing of the valve open state, (B) is sectional drawing of the valve closed state 同シール構造におけるゴム状弾性体の製作方法を示す断面図Sectional drawing which shows the manufacturing method of the rubber-like elastic body in the seal structure 本発明の第四実施例に係るシール構造の弁開状態を示す断面図Sectional drawing which shows the valve open state of the seal structure which concerns on 4th Example of this invention. 同シール構造の弁閉状態を示す断面図Sectional view showing the valve closed state of the seal structure 従来例に係るバルブ装置の断面図Sectional view of a valve device according to a conventional example 同バルブ装置に備えられるシール構造の断面図Sectional view of the seal structure provided in the valve device

符号の説明Explanation of symbols

１，１１ 弁体（剛性部品）
１ａ，１６ａ 当接面
２，１３ バルブボディ
２ａ，１１ａ，１３ａ 端面部
３，１４ 弁座部
４，１５ 装着溝
５，１６ ゴム状弾性体
６，１２ 環状突起
７，１７ 複数段シール構造
１２ａ，１５ａ 円筒面
１２ｂ，１５ｂ 平面
１６ｂ 連結部
Ｈ 高圧側空間
Ｌ 低圧側空間
Ｍ１，Ｍ２，Ｍ３ 中間空間 1,11 Valve body (rigid parts)
DESCRIPTION OF SYMBOLS 1a, 16a Contact surface 2,13 Valve body 2a, 11a, 13a End surface part 3,14 Valve seat part 4,15 Mounting groove 5,16 Rubber-like elastic body 6,12 Annular protrusion 7,17 Multistage seal structure 12a, 15a the cylindrical surface 12b, 15b flat 16b connecting portion H high pressure side space L low-pressure side space M 1, M 2, M 3 intermediate space

Claims (3)

バルブの開閉作動に合わせて一対のシール要素が互いに接離する構造のバルブのシール構造において、
前記一対のシール要素は、金属等の剛性部品とゴム状弾性体との組み合わせよりなり、
前記ゴム状弾性体に設けた複数の環状突起が同時に前記剛性部品に接離する複数段シール構造を有することを特徴とするバルブのシール構造。 In the valve seal structure in which the pair of seal elements are in contact with each other in accordance with the opening / closing operation of the valve,
The pair of sealing elements is a combination of a rigid part such as metal and a rubber-like elastic body,
A valve sealing structure characterized by having a multi-stage sealing structure in which a plurality of annular protrusions provided on the rubber-like elastic body are simultaneously contacted and separated from the rigid component. バルブの開閉作動に合わせて一対のシール要素が互いに接離する構造のバルブのシール構造において、
前記一対のシール要素は、金属等の剛性部品とゴム状弾性体との組み合わせよりなり、
前記剛性部品に設けた複数の環状突起が同時に前記ゴム状弾性体に接離する複数段シール構造を有することを特徴とするバルブのシール構造。 In the valve seal structure in which the pair of seal elements are in contact with each other in accordance with the opening / closing operation of the valve,
The pair of sealing elements is a combination of a rigid part such as metal and a rubber-like elastic body,
A valve sealing structure characterized by having a multi-stage sealing structure in which a plurality of annular projections provided on the rigid component are simultaneously brought into and out of contact with the rubber-like elastic body. 請求項２記載のシール構造において、
ゴム状弾性体は、これも環状突起に合わせて複数が配置されていることを特徴とするバルブのシール構造。 The seal structure according to claim 2,
A plurality of rubber-like elastic bodies are also arranged in accordance with the annular protrusions.
JP2006160763A 2006-06-09 2006-06-09 Valve sealing structure Pending JP2007327614A (en)

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JP2009228838A (en) * 2008-03-24 2009-10-08 Jst Mfg Co Ltd Waterproof seal structure and apparatus provided with this seal structure
JP2010071378A (en) * 2008-09-18 2010-04-02 Toyo Tire & Rubber Co Ltd Air spring
JP2011027191A (en) * 2009-07-27 2011-02-10 Nok Corp On-off valve
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JP2012017876A (en) * 2010-07-06 2012-01-26 T Rad Co Ltd Tank structure of module heat exchanger
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CN106122500A (en) * 2016-06-27 2016-11-16 西安航空制动科技有限公司 A kind of encapsulated valve of air inlet having push rod and method for production thereof
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WO2022211494A1 (en) * 2021-04-02 2022-10-06 Hanon Systems Device for regulating a through-flow and expanding of a fluid in a fluid circuit

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