JP3740842B2 - Valve device - Google Patents

Valve device Download PDF

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Publication number
JP3740842B2
JP3740842B2 JP14456698A JP14456698A JP3740842B2 JP 3740842 B2 JP3740842 B2 JP 3740842B2 JP 14456698 A JP14456698 A JP 14456698A JP 14456698 A JP14456698 A JP 14456698A JP 3740842 B2 JP3740842 B2 JP 3740842B2
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JP
Japan
Prior art keywords
valve body
valve
pressing member
valve device
mounting
Prior art date
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Expired - Fee Related
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JP14456698A
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Japanese (ja)
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JPH11336923A (en
Inventor
順三 藤井
友宏 加見
浩一 岡田
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、ポンプ等において吸気・送気・逆送を阻止する逆止等に使用される弁装置に関し、詳しくは、弁体の成形性が容易で、組立て性も容易でコストを低減しながら、動作の信頼性を高めようとする技術に係るものである。
【0002】
【従来の技術】
図12に示すように、弁装置においては、弁孔1に付設したベローズ状の弁体2aを所定圧力以上の圧力流体が弾性変形させて弁孔1を開放して通過するとともに、所定圧力以下の流体に対してはベローズ状の弁体2aが弾性復元して弁孔1を閉塞して通過を阻止するのである。
【0003】
【発明が解決しようとする課題】
ところで、従来の弁装置においては、図12(b)に示すように、弁体2aに紐状体のような余剰部2xを一連に成形しておき、余剰部2xを引っ張るなどして弁体2aを弁体取付け部3に所定通りに取付け、その後、余剰部2xを切断しておくのである。
【0004】
このような構成においては、弁体2aには余剰部2xが一連に形成されているので、成形形状が複雑となり、弁体2aの部品交換が困難であり、余剰部2xを切断した弁体2aの再使用ができないものであり、コスト高となるものである。しかも、ごみDが弁体2aの裏面に付着している場合には、ごみDの除去が困難であり、ごみDが付着したままであると、閉塞(逆止)が不充分となって漏洩が生じるのであり、信頼性が低くなるのである。
【0005】
本発明はこのような問題に鑑みてなされたものであり、弁体の成形性が容易で、組立て性も容易でコストを低減しながら、動作の信頼性を高めることができる弁装置を提供することを課題とするものである。
【0006】
【課題を解決するための手段】
請求項1においては、押さえ部材4の取付けピン7を弁体2に貫通するとともに弁孔1を形成している弁体取付け部3に嵌入して押さえ部材4と弁体取付け部3とで弁体2を押圧保持していることを特徴とするものである。このような構成によれば、弁体2の形状を従来のように複雑化させることがなく、押さえ部材4を所定の位置に取付けることで弁体2aの組込みが容易におこなえてコストを低減するのであり、且つ、押さえ部材4を外すことで弁体2の裏面のごみの除去も容易におこなえてごみが付着していない状態を得やすく、ごみによる漏洩を回避できて信頼性を高めるものである。
しかも、取付けピン 7 に対して弁体2の取付け及び取外しが自在におこなえ、補修時に弁体2のシール面のごみの除去を、より一層、確実におこなえるものである。
【0007】
請求項2においては、弁体2は、弁体取付け部3とは分離自在にしてあることを特徴とするものである。このような構成によれば、弁体2を弁体取付け部3から取外して、補修時に弁体2のシール面のごみの除去を、より一層、確実におこなえるものである。
【0008】
請求項3においては、押さえ部材4はハウジングであり、押さえ部材4に弁体2を取付けてあることを特徴とするものである。このような構成によれば、押さえ部材4が弁装置のハウジングであり、ハウジングを有効に利用して部品点数を軽減でき、且つ、組立て時間も短くするものである。
【0009】
請求項4においては、弁体2の軸部分5の厚さTは、軸部分5の周部の弁体部分6の弁体取付け部3への押圧密着時の高さHよりも大にしてあることを特徴とするものである。このような構成によれば、軸部分5の周部の弁体部分6の軸心方向の撓み変形量を大きくして、シール効果を高めるものである。
【0011】
請求項5においては、弁体2は、軸部分5より外周にベローズ状の弁体部分6が延出されて構成され、弁体部分6の付け根部分の軸部分5に柔軟部8を形成していることを特徴とするものである。このような構成によれば、柔軟部8においてベローズ状の弁体部分6の弾性変形能を高めるのであり、弁体部分6を弾性変形させる負荷を低減させて、圧力流体を発生させる駆動電力を軽減するものである。
【0012】
請求項6においては、弁体2の押圧密着高さを所定の高さHに設定する手段を設けていることを特徴とするものである。このような構成によれば、弁体2の密着力を所定の強さに設定するのであり、確実なシール性を得るのであり、弁装置の特性を安定化させるものである。
【0013】
請求項7においては、弁体2の押圧密着高さを所定の高さHに設定する手段は、押さえ部材4と弁体取付け部3との当接にておこなわれる構成のものであることを特徴とするものである。このような構成によれば、弁体2の密着力を所定の強さに設定する構成を簡素化するものである。
【0015】
請求項8においては、押さえ部材4より取付けピン7を延出し、取付けピン7を弁体2にシール手段を介して貫通して取付けピン7を弁体取付け部3に嵌入して弁体2を取付けてあることを特徴とするものである。このような構成によれば、押さえ部材4の取付けピン7に弁体2を貫通させることで、弁体2のシール面の点検をおこなえるのであり、この場合に、取付けピン7と弁体2間のシール性を確保でき、この個所からの漏洩を防止するものである。
【0016】
【発明の実施の形態】
以下、本発明の弁装置Aの実施の形態を説明する。
【0017】
図1は実施の形態1を示し、同図(a)は弁装置Aを組み込んだ例えばダイヤフラムポンプPの断面図、同図(b)は弁装置Aの拡大断面図、図2(a)は同上のダイヤフラム室へ空気を導入する構成を示す断面図、同図(b)は全体の側面図である。
【0018】
ダイヤフラムポンプPは図1(a)及び図2(a)に示すように、モータ10の出力軸11に偏心して駆動軸12を取付け、駆動軸12に作動ロッド13を取付け、作動ロッド13にダイヤフラム14を連結して出力軸11の駆動回転により駆動軸12、作動ロッド13を介してダイヤフラム14を稼動させてダイヤフラム室15内に吸入口16、吸入弁17を介して空気を導入し、導入した空気をダイヤフラム14の更なる動作により本発明の弁装置Aを逆止をおこなう吐出弁18として使用するものである。このようにダイヤフラム室15に空気を導入する吸入弁17の構成は種々設計変更可能である。以下、弁装置Aを詳述する。
本実施の形態においては、ハウジング19内に設けられている隔壁部材を弁体取付け部3とするとともにこれに弁孔1…を環状に配置するとともに弁体2を弁孔1…の環状の中心に取付けて弁孔1…を閉塞するようにしている。具体的には、隔壁部材である弁体取付け部3に対向しているハウジング部分21を押さえ部材4として弁体2を押さえ部材4と弁体取付け部3とで押圧保持したものである。更に、弁体2の押圧保持に際して、押さえ部材4から取付けピン7を延出して弁体2の軸部分5に形成した貫通孔に挿通して取付けピン7を押さえ部材4に形成した位置決め孔20に嵌入したものである。ハウジング部分21は蓋状となってハウジング本体22にビス23にて固定されている。
【0019】
本実施の形態においては、押さえ部材4を所定の位置にビス23にて取付けることで弁体2の組込みがおこなえるのであり、且つ、押さえ部材4を取外すことで弁体2の裏面のごみの除去もおこなえてごみが付着していない状態を得やすく、ごみによる漏洩を回避できて信頼性を高めることができるのである。図3は押さえ部材4を弁体取付け部3から外す状態を示している。しかして、弁体2を弁体取付け部3から取外すことができ、補修時に弁体2のシール面のごみの除去を、より一層、確実におこなえる。又、押さえ部材4はハウジングであり、ハウジングを有効に利用して部品点数を軽減でき、且つ、組立て時間も短くできるのである。
【0020】
図4及び図5は実施の形態2を示していて、弁体取付け部3に凹部24を形成して軸部分5を据え付けている。この場合、弁体2の軸部分5の厚さTは、軸部分5の周部の弁体部分6の弁体取付け部3への押圧密着時の高さHよりも大にしてある。このような構成によれば、軸部分5の周部の弁体部分6の軸心方向の撓み変形量を大きくでき、シール効果を高めることができるのである。又、弁体2を軸部分5において安定的に据付けることができ、安定したシールをおこなえるものである。
【0021】
図6は実施の形態3を示していて、押さえ部材4はピン形態にして押さえ部材4から延出した取付けピン7を弁体取付け部3の位置決め孔20に嵌入して弁体2を弁体取付け部3に取付けたものである。このような構成によれば、ピン形態となった押さえ部材4を外すことで、弁体2を弁体取付け部3から取外すことができ、補修時に弁体2のシール面のごみの除去を、より一層、確実におこなえるのである。
【0022】
図7は実施の形態4を示していて、弁体2は、軸部分5より外周にベローズ状の弁体部分6が延出されて構成され、弁体部分6の付け根部分の軸部分5に環状の凹溝を形成して柔軟部8を形成したものである。このような構成によれば、柔軟部8においてベローズ状の弁体部分6の弾性変形能を高め、弁体部分6を弾性変形させる負荷を低減でき、圧力流体を発生させる駆動電力を軽減できるものである。
【0023】
図8は実施の形態5を示していて、弁体2の押圧密着高さを所定の高さHに設定する手段を設けたものである。具体的には、押さえ部材4にストッパー25を延出してストッパー25を弁体取付け部3に当接するようにしたものである。この場合、図9に示すように、押さえ部材4から延出した取付けピン7をストッパー25に兼ねて位置決め孔20の底面に当接するようにしてもよいものである。このような構成によれば、弁体2の密着力を所定の強さに設定することができ、確実なシール性を得ることができ、弁装置の特性を安定化させることができるのである。
【0024】
図10は参考例を示していて、弁体取付け部3に弁体2を貫通支持する支持部9を突設して、支持部9に弁体2を貫通したものである。このような構成によれば、弁体取付け部3に対して弁体2を所定の位置に取付けることができ、弁孔1に対して弁体2を所定の位置に設置させることができ、一層、特性を安定化させ、信頼性を高めることできるものである。この場合、支持部9をストッパー25として押さえ部材4に当接して弁体2の押圧密着高さを所定の高さHに設定するようにしてもよい。
【0025】
図11は実施の形態6を示していて、押さえ部材4より取付けピン7を延出し、取付けピン7を弁体2にシール手段を介して貫通して取付けピン7を弁体取付け部3に嵌入して弁体2を取付けたものである。シール手段の具体構成は、取付けピン7に突条26を形成したものである。この突条26は複数形成してある。このような構成によれば、押さえ部材4の取付けピン7に弁体2を貫通させることで、弁体2のシール面の点検をおこなえながら、この場合に、取付けピン7と弁体2間のシール性を確保でき、この個所からの漏洩を防止できるものである。
【0026】
【発明の効果】
請求項1においては、押さえ部材の取付けピンを弁体に貫通するとともに弁孔を形成している弁体取付け部に嵌入して押さえ部材と弁体取付け部とで弁体を押圧保持しているから、弁体の形状を従来のように複雑化させることがなく、押さえ部材を所定の位置に取付けることで弁体の組込みが容易におこなえてコストを低減でき、且つ、押さえ部材を外すことで弁体の裏面のごみの除去も容易におこなえてごみが付着していない状態を得やすく、ごみによる漏洩を回避できて信頼性を高めることができるという利点がある。
しかも、取付けピンに対して弁体の取付け及び取外しが自在におこなえ、補修時に弁体のシール面のごみの除去を、より一層、確実におこなえるという利点がある。
【0027】
請求項2においては、弁体は、弁体取付け部とは分離自在にしてあるから、請求項1の効果に加えて、弁体を弁体取付け部から取外すことができ、補修時に弁体のシール面のごみの除去を、より一層、確実におこなえるという利点がある。
【0028】
請求項3においては、押さえ部材はハウジングであり、押さえ部材に弁体を取付けてあるから、請求項1の効果に加えて、ハウジングを有効に利用して部品点数を軽減でき、且つ、組立て時間も短くできるという利点がある。
【0029】
請求項4においては、弁体の軸部分の厚さは、軸部分の周部の弁体部分の弁体取付け部への押圧密着時の高さよりも大にしてあるから、請求項1の効果に加えて、軸部分の周部の弁体部分の軸心方向の撓み変形量を大きくでき、シール効果を高めることができるという利点がある。
【0031】
請求項5においては、弁体は、軸部分より外周にベローズ状の弁体部分が延出されて構成され、弁体部分の付け根部分の軸部分に柔軟部を形成しているから、請求項1の効果に加えて、柔軟部においてベローズ状の弁体部分の弾性変形能を高め、弁体部分を弾性変形させる負荷を低減でき、圧力流体を発生させる駆動電力を軽減できる等という利点がある。
【0032】
請求項6においては、弁体の押圧密着高さを所定の高さに設定する手段を設けているから、請求項1の効果に加えて、弁体の密着力を所定の強さに設定することができ、確実なシール性を得ることができ、弁装置の特性を安定化させることができるという利点がある。
【0033】
請求項7においては、弁体の押圧密着高さを所定の高さに設定する手段は、押さえ部材と弁体取付け部との当接にておこなわれる構成のものであるから、請求項6の効果に加えて、弁体の密着力を所定の強さに設定する構成を簡素化できるという利点がある。
【0035】
請求項8においては、押さえ部材より取付けピンを延出し、取付けピンを弁体にシール手段を介して貫通して取付けピンを弁体取付け部に嵌入して弁体を取付けてあるから、請求項1の効果に加えて、押さえ部材の取付けピンに弁体を貫通させることで、弁体のシール面の点検をおこなえながら、この場合に、取付けピンと弁体間のシール性を確保でき、この個所からの漏洩を防止できるという利点がある。
【図面の簡単な説明】
【図1】本発明の実施の形態1を示し、(a)は断面図、(b)は拡大断面図である。
【図2】同上のダイヤフラム室への空気の導入構成を示す断面図、(b)は側面図である。
【図3】同上の拡大断面図である。
【図4】同上の実施の形態2の拡大断面図である。
【図5】同上の拡大断面図である。
【図6】同上の実施の形態3の拡大断面図である。
【図7】同上の実施の形態4の拡大断面図である。
【図8】同上の実施の形態5の拡大断面図である。
【図9】同上の他の実施の形態の拡大断面図である。
【図10】 同上の参考例の拡大断面図である。
【図11】 同上の実施の形態6の拡大断面図である。
【図12】従来例を示し、(a)は断面図、(b)は拡大断面図である。
【符号の説明】
1 弁孔
2 弁体
3 弁体取付け部
4 押さえ部材
5 軸部分
6 弁体部分
7 取付けピン
51 8 柔軟部
9 支持部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a valve device that is used for a check that prevents intake, air supply, and reverse feed in a pump or the like. Specifically, the valve body is easy to mold, easy to assemble, and reduces cost. The present invention relates to a technique for improving the reliability of operation.
[0002]
[Prior art]
As shown in FIG. 12 , in the valve device, the pressure fluid of a predetermined pressure or higher is elastically deformed through the bellows-like valve body 2a attached to the valve hole 1 to open the valve hole 1 and pass through it, and the predetermined pressure or lower. For this fluid, the bellows-like valve body 2a is elastically restored to block the valve hole 1 to prevent passage.
[0003]
[Problems to be solved by the invention]
By the way, in the conventional valve device, as shown in FIG. 12 (b), the valve body 2a is formed with a series of surplus parts 2x such as a string-like body, and the surplus part 2x is pulled, for example. 2a is attached to the valve body attaching part 3 as prescribed, and then the surplus part 2x is cut.
[0004]
In such a configuration, since the surplus portion 2x is formed in series on the valve body 2a, the molded shape is complicated, and it is difficult to replace the parts of the valve body 2a, and the valve body 2a is cut off from the surplus portion 2x. Can not be reused, resulting in high costs. In addition, when the dust D adheres to the back surface of the valve body 2a, it is difficult to remove the dust D. If the dust D remains attached, the blockage (reverse check) is insufficient and leakage occurs. As a result, the reliability becomes low.
[0005]
The present invention has been made in view of such a problem, and provides a valve device that can improve the reliability of operation while easily forming a valve body, easily assembling, and reducing costs. This is a problem.
[0006]
[Means for Solving the Problems]
In claim 1, the holding pin 7 of the pressing member 4 is inserted into the valve body mounting portion 3 which penetrates the valve body 2 and forms the valve hole 1, and the valve is formed by the pressing member 4 and the valve body mounting portion 3. The body 2 is pressed and held. According to such a configuration, the shape of the valve body 2 is not complicated as in the prior art, and the presser member 4 is attached at a predetermined position, whereby the valve body 2a can be easily assembled and the cost can be reduced. In addition, by removing the pressing member 4, it is possible to easily remove the dust on the back surface of the valve body 2 and to obtain a state in which no dust is attached, and to prevent leakage due to the dust and to improve reliability. is there.
In addition, the valve body 2 can be freely attached to and detached from the mounting pin 7 , and dust on the sealing surface of the valve body 2 can be removed more reliably during repair.
[0007]
According to a second aspect of the present invention, the valve body 2 is separable from the valve body mounting portion 3. According to such a configuration, the valve body 2 can be removed from the valve body mounting portion 3 and the dust on the sealing surface of the valve body 2 can be removed more reliably during repair.
[0008]
According to a third aspect of the present invention, the pressing member 4 is a housing, and the valve body 2 is attached to the pressing member 4. According to such a configuration, the pressing member 4 is the housing of the valve device, and the number of parts can be reduced by effectively using the housing, and the assembly time can be shortened.
[0009]
In claim 4, the thickness T of the shaft portion 5 of the valve body 2 is set to be larger than the height H of the peripheral portion of the shaft portion 5 when the valve body portion 6 is pressed against the valve body mounting portion 3. It is characterized by being. According to such a configuration, the amount of bending deformation in the axial direction of the valve body portion 6 in the peripheral portion of the shaft portion 5 is increased to enhance the sealing effect.
[0011]
In claim 5 , the valve body 2 is configured by extending a bellows-like valve body portion 6 on the outer periphery of the shaft portion 5, and forming a flexible portion 8 on the shaft portion 5 at the base portion of the valve body portion 6. It is characterized by that. According to such a configuration, the elastic deformability of the bellows-like valve body portion 6 is increased in the flexible portion 8, and the driving power for generating pressure fluid is reduced by reducing the load for elastically deforming the valve body portion 6. It is to reduce.
[0012]
According to a sixth aspect of the present invention, means for setting the pressing contact height of the valve body 2 to a predetermined height H is provided. According to such a configuration, the contact force of the valve body 2 is set to a predetermined strength, and a reliable sealing property is obtained, and the characteristics of the valve device are stabilized.
[0013]
In claim 7 , the means for setting the pressing contact height of the valve body 2 to a predetermined height H is configured to be performed by contact between the pressing member 4 and the valve body mounting portion 3. It is a feature. According to such a structure, the structure which sets the contact | adherence force of the valve body 2 to predetermined intensity | strength is simplified.
[0015]
According to the eighth aspect of the present invention, the attachment pin 7 extends from the pressing member 4, the attachment pin 7 penetrates through the valve body 2 through the sealing means, and the attachment pin 7 is fitted into the valve body attachment portion 3 to attach the valve body 2. It is characterized by being attached. According to such a configuration, the sealing surface of the valve body 2 can be inspected by passing the valve body 2 through the mounting pin 7 of the presser member 4. In this case, between the mounting pin 7 and the valve body 2 The sealing property can be secured, and leakage from this point is prevented.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the valve device A of the present invention will be described.
[0017]
FIG. 1 shows Embodiment 1, wherein FIG. 1 (a) is a cross-sectional view of, for example, a diaphragm pump P incorporating the valve device A, FIG. 1 (b) is an enlarged cross-sectional view of the valve device A, and FIG. Sectional drawing which shows the structure which introduces air into a diaphragm chamber same as the above, The figure (b) is the whole side view.
[0018]
As shown in FIG. 1A and FIG. 2A, the diaphragm pump P is eccentric to the output shaft 11 of the motor 10 and is attached with a drive shaft 12, an operation rod 13 is attached to the drive shaft 12, and the diaphragm is attached to the operation rod 13. 14 is connected and the diaphragm 14 is operated via the drive shaft 12 and the operating rod 13 by the driving rotation of the output shaft 11, and air is introduced into the diaphragm chamber 15 via the suction port 16 and the suction valve 17. The valve device A of the present invention is used as a discharge valve 18 for performing a check by further operation of the diaphragm 14. Thus, the design of the suction valve 17 for introducing air into the diaphragm chamber 15 can be changed in various ways. Hereinafter, the valve device A will be described in detail.
In the present embodiment, the partition member provided in the housing 19 is used as the valve body mounting portion 3 and the valve holes 1 are arranged in an annular shape and the valve body 2 is arranged in the annular center of the valve holes 1. Is attached to the valve hole 1 so as to close the valve hole 1. Specifically, the valve body 2 is pressed and held by the pressing member 4 and the valve body mounting portion 3 with the housing portion 21 facing the valve body mounting portion 3 being a partition member as the pressing member 4. Further, when the valve body 2 is pressed and held, the mounting pin 7 extends from the pressing member 4 and is inserted into a through hole formed in the shaft portion 5 of the valve body 2 so that the mounting pin 7 is formed in the pressing member 4. It is inserted in. The housing portion 21 has a lid shape and is fixed to the housing body 22 with screws 23.
[0019]
In the present embodiment, the valve body 2 can be assembled by attaching the pressing member 4 to a predetermined position with the screw 23, and dust on the back surface of the valve body 2 can be removed by removing the pressing member 4. In addition, it is easy to obtain a state in which no dust is attached, and leakage due to the dust can be avoided to improve reliability. FIG. 3 shows a state in which the pressing member 4 is removed from the valve body attaching portion 3. Thus, the valve body 2 can be removed from the valve body mounting portion 3, and the dust on the sealing surface of the valve body 2 can be more reliably removed during repair. Further, the pressing member 4 is a housing, and the number of parts can be reduced by effectively using the housing, and the assembling time can be shortened.
[0020]
4 and 5 show the second embodiment, and the shaft portion 5 is installed by forming a recess 24 in the valve body mounting portion 3. In this case, the thickness T of the shaft portion 5 of the valve body 2 is set to be greater than the height H when the valve body portion 6 on the periphery of the shaft portion 5 is pressed against the valve body mounting portion 3. According to such a configuration, the amount of bending deformation in the axial direction of the valve body portion 6 around the shaft portion 5 can be increased, and the sealing effect can be enhanced. Further, the valve body 2 can be stably installed on the shaft portion 5, and a stable seal can be performed.
[0021]
FIG. 6 shows the third embodiment. The holding member 4 is in the form of a pin, and a mounting pin 7 extending from the holding member 4 is fitted into the positioning hole 20 of the valve body mounting portion 3 so that the valve body 2 is inserted into the valve body. It is attached to the attachment part 3. According to such a configuration, the valve body 2 can be removed from the valve body mounting portion 3 by removing the pressing member 4 in the form of a pin, and dust on the seal surface of the valve body 2 can be removed during repair. It can be done even more reliably.
[0022]
FIG. 7 shows Embodiment 4, and the valve body 2 is configured by extending a bellows-like valve body portion 6 on the outer periphery from the shaft portion 5, and the shaft portion 5 at the base portion of the valve body portion 6 is formed on the shaft portion 5. The flexible part 8 is formed by forming an annular groove. According to such a configuration, it is possible to increase the elastic deformability of the bellows-like valve body portion 6 in the flexible portion 8, reduce the load for elastically deforming the valve body portion 6, and reduce the driving power for generating pressure fluid. It is.
[0023]
FIG. 8 shows a fifth embodiment, in which means for setting the pressing contact height of the valve body 2 to a predetermined height H is provided. Specifically, a stopper 25 is extended to the pressing member 4 so that the stopper 25 comes into contact with the valve body mounting portion 3. In this case, as shown in FIG. 9, the mounting pin 7 extending from the pressing member 4 may also serve as the stopper 25 and abut on the bottom surface of the positioning hole 20. According to such a configuration, the contact force of the valve body 2 can be set to a predetermined strength, a reliable sealing property can be obtained, and the characteristics of the valve device can be stabilized.
[0024]
FIG. 10 shows a reference example, in which a support portion 9 that penetrates and supports the valve body 2 is projected from the valve body mounting portion 3, and the valve body 2 penetrates the support portion 9. According to such a configuration, the valve body 2 can be mounted at a predetermined position with respect to the valve body mounting portion 3, and the valve body 2 can be installed at a predetermined position with respect to the valve hole 1. , Can stabilize the characteristics and improve the reliability. In this case, the support portion 9 may be brought into contact with the pressing member 4 as a stopper 25 to set the pressing contact height of the valve body 2 to a predetermined height H.
[0025]
FIG. 11 shows Embodiment 6 , in which a mounting pin 7 is extended from the pressing member 4, the mounting pin 7 is passed through the valve body 2 through a sealing means, and the mounting pin 7 is fitted into the valve body mounting portion 3. Then, the valve body 2 is attached. The specific configuration of the sealing means is such that a protrusion 26 is formed on the mounting pin 7. A plurality of the protrusions 26 are formed. According to such a configuration, the valve body 2 is passed through the mounting pin 7 of the pressing member 4 so that the seal surface of the valve body 2 can be inspected. In this case, between the mounting pin 7 and the valve body 2 Sealability can be secured and leakage from this point can be prevented.
[0026]
【The invention's effect】
According to the first aspect of the present invention, the attachment pin of the pressing member passes through the valve body and is fitted into the valve body mounting portion forming the valve hole so that the valve body is pressed and held by the pressing member and the valve body mounting portion . Therefore, without complicating the shape of the valve body as in the prior art, it is possible to easily incorporate the valve body by attaching the pressing member at a predetermined position, thereby reducing the cost, and by removing the pressing member. There is an advantage that dust on the back surface of the valve body can be easily removed to easily obtain a state in which no dust is attached, and leakage due to dust can be avoided to improve reliability.
In addition, there is an advantage that the valve body can be freely attached to and detached from the mounting pin, and dust on the sealing surface of the valve body can be removed more reliably during repair.
[0027]
In claim 2, since the valve body is separable from the valve body mounting portion, in addition to the effect of claim 1, the valve body can be removed from the valve body mounting portion, and the valve body can be removed during repair. There is an advantage that dust on the sealing surface can be more reliably removed.
[0028]
According to the third aspect of the present invention, since the pressing member is a housing and a valve body is attached to the pressing member, in addition to the effects of the first aspect, the number of parts can be reduced by effectively using the housing, and the assembly time can be reduced. There is an advantage that can be shortened.
[0029]
Since the thickness of the shaft portion of the valve body is set to be larger than the height at the time of press-contact with the valve body mounting portion of the valve body portion of the periphery of the shaft portion, the effect of claim 1 is achieved. In addition, there is an advantage that the amount of bending deformation in the axial direction of the valve body portion around the shaft portion can be increased, and the sealing effect can be enhanced.
[0031]
In claim 5 , the valve body is configured by extending a bellows-like valve body portion on the outer periphery from the shaft portion, and forms a flexible portion in the shaft portion of the base portion of the valve body portion. In addition to the effects of 1, there is an advantage that the elastic deformation capability of the bellows-like valve body part is enhanced in the flexible part, the load for elastically deforming the valve body part can be reduced, and the driving power for generating the pressure fluid can be reduced. .
[0032]
Since the means for setting the pressing contact height of the valve body to a predetermined height is provided in claim 6, in addition to the effect of claim 1, the contact force of the valve body is set to a predetermined strength. Therefore, there is an advantage that reliable sealing performance can be obtained and characteristics of the valve device can be stabilized.
[0033]
In claim 7, the means for setting the pressing solid height of the valve body to a predetermined height, since those configurations performed in abutment between the pressing member and the valve mounting portion, according to claim 6 In addition to the effect, there is an advantage that the configuration for setting the contact force of the valve body to a predetermined strength can be simplified.
[0035]
In the eighth aspect of the present invention, the mounting pin is extended from the pressing member, the mounting pin is passed through the valve body through the sealing means, the mounting pin is fitted into the valve body mounting portion, and the valve body is mounted. In addition to the effect of 1, the valve body can be passed through the mounting pin of the holding member, and in this case, the sealing performance between the mounting pin and the valve body can be secured while checking the sealing surface of the valve body. There is an advantage that leakage from the can be prevented.
[Brief description of the drawings]
1A and 1B show a first embodiment of the present invention, in which FIG. 1A is a cross-sectional view and FIG. 1B is an enlarged cross-sectional view.
FIG. 2 is a cross-sectional view showing a structure for introducing air into the diaphragm chamber, and FIG. 2B is a side view.
FIG. 3 is an enlarged cross-sectional view of the above.
FIG. 4 is an enlarged sectional view of the second embodiment.
FIG. 5 is an enlarged cross-sectional view of the above.
FIG. 6 is an enlarged sectional view of the third embodiment.
FIG. 7 is an enlarged sectional view of the fourth embodiment.
FIG. 8 is an enlarged cross-sectional view of the fifth embodiment.
FIG. 9 is an enlarged cross-sectional view of another embodiment of the same.
FIG. 10 is an enlarged sectional view of the reference example .
FIG. 11 is an enlarged sectional view of the sixth embodiment .
12A and 12B show a conventional example, in which FIG. 12A is a cross-sectional view, and FIG. 12B is an enlarged cross-sectional view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Valve hole 2 Valve body 3 Valve body attaching part 4 Holding member 5 Shaft part 6 Valve body part 7 Mounting pin 51 8 Flexible part 9 Support part

Claims (8)

弁孔に付設したベローズ状の弁体を所定圧力以上の圧力流体が弾性変形させて弁孔を開放して通過するとともに、所定圧力以下の流体に対してはベローズ状の弁体が弾性復元して弁孔を閉塞して通過を阻止する弁装置であって、押さえ部材の取付けピンを弁体に貫通するとともに弁孔を形成している弁体取付け部に嵌入して押さえ部材と弁体取付け部とで弁体を押圧保持して成ることを特徴とする弁装置。  The pressure fluid above the specified pressure is elastically deformed through the bellows-shaped valve element attached to the valve hole and passes through the valve hole, and the bellows-shaped valve element is elastically restored to fluid below the specified pressure. A valve device that closes the valve hole and prevents passage of the valve member. The pressing member mounting pin penetrates the valve body and is fitted into the valve body mounting portion that forms the valve hole to attach the pressing member and the valve body. A valve device characterized in that the valve body is pressed and held by a portion. 弁体は、弁体取付け部とは分離自在にして成ることを特徴とする請求項1記載の弁装置。  The valve device according to claim 1, wherein the valve body is separable from the valve body mounting portion. 押さえ部材はハウジングであり、押さえ部材に弁体を取付けてあることを特徴とする請求項1記載の弁装置。  The valve device according to claim 1, wherein the pressing member is a housing, and a valve body is attached to the pressing member. 弁体の軸部分の厚さは、軸部分の周部の弁体部分の弁体取付け部への押圧密着時の高さよりも大にして成ることを特徴とする請求項1記載の弁装置。  2. The valve device according to claim 1, wherein the thickness of the shaft portion of the valve body is made larger than the height of the valve body portion in the periphery of the shaft portion when pressed against the valve body mounting portion. 弁体は、軸部分より外周にベローズ状の弁体部分が延出されて構成され、弁体部分の付け根部分の軸部分に柔軟部を形成して成ることを特徴とする請求項1記載の弁装置。  2. The valve body according to claim 1, wherein a bellows-like valve body portion is extended from the shaft portion to the outer periphery, and a flexible portion is formed at the shaft portion of the base portion of the valve body portion. Valve device. 弁体の押圧密着高さを所定の高さに設定する手段を設けて成ることを特徴とする請求項1記載の弁装置。  2. A valve device according to claim 1, further comprising means for setting the pressing contact height of the valve body to a predetermined height. 弁体の押圧密着高さを所定の高さに設定する手段は、押さえ部材と弁体取付け部との当接にておこなわれる構成のものであることを特徴とする請求項6記載の弁装置。  7. The valve device according to claim 6, wherein the means for setting the pressing contact height of the valve body to a predetermined height is configured by contact between the pressing member and the valve body mounting portion. . 押さえ部材より取付けピンを延出し、取付けピンを弁体にシール手段を介して貫通して取付けピンを弁体取付け部に嵌入して弁体を取付けて成ることを特徴とする請求項1記載の弁装置。 2. The valve body is attached by extending a mounting pin from the pressing member, penetrating the mounting pin through the valve body through a sealing means, and inserting the mounting pin into the valve body mounting portion . Valve device.
JP14456698A 1998-05-26 1998-05-26 Valve device Expired - Fee Related JP3740842B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14456698A JP3740842B2 (en) 1998-05-26 1998-05-26 Valve device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14456698A JP3740842B2 (en) 1998-05-26 1998-05-26 Valve device

Publications (2)

Publication Number Publication Date
JPH11336923A JPH11336923A (en) 1999-12-07
JP3740842B2 true JP3740842B2 (en) 2006-02-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP14456698A Expired - Fee Related JP3740842B2 (en) 1998-05-26 1998-05-26 Valve device

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