JP2003065189A - Fluid control valve and manufacturing method of same - Google Patents
Fluid control valve and manufacturing method of sameInfo
- Publication number
- JP2003065189A JP2003065189A JP2001258880A JP2001258880A JP2003065189A JP 2003065189 A JP2003065189 A JP 2003065189A JP 2001258880 A JP2001258880 A JP 2001258880A JP 2001258880 A JP2001258880 A JP 2001258880A JP 2003065189 A JP2003065189 A JP 2003065189A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- needle
- young
- modulus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Fuel-Injection Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、流体を制御する流
体制御バルブ装置に関し、例えば、燃料噴射弁等に利用
することができる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid control valve device for controlling a fluid, which can be used in, for example, a fuel injection valve.
【０００２】[0002]
【従来の技術】従来、流体制御バルブ装置に関連する先
行技術文献としては、特開平９−１８９２７８号公報に
て開示されたものが知られている。このものでは、ニー
ドルバルブ（弁部材）の環状の稜線にて形成されるシー
ト部（座部縁部）の下流側に直接続く環状ギャップを設
けることで、バルブボデー（弁体）とニードルバルブと
の間においてニードルバルブのシート部によって所定の
接触ライン（シールライン）を得て、シール性を損なわ
ないようにする技術が示されている。2. Description of the Related Art Conventionally, as a prior art document relating to a fluid control valve device, one disclosed in Japanese Patent Application Laid-Open No. 9-189278 is known. In this structure, the valve body (valve body) and the needle valve are provided by providing an annular gap directly following the seat portion (seating portion edge portion) formed by the annular ridge of the needle valve (valve member). A technique is disclosed in which a predetermined contact line (sealing line) is obtained by the seat portion of the needle valve during the period so as not to impair the sealing property.
【０００３】[0003]
【発明が解決しようとする課題】ところで、前述のもの
においては、バルブボデーの内部を軸方向に沿って往復
駆動され、ニードルバルブが閉弁方向への移動でバルブ
ボデー内の弁座に着座する際のニードルバルブ側に形成
された環状のシート部に摩耗が発生すると、開弁圧が大
きく変化すると共に、シート部のシール性も著しく低下
するという不具合に対処するとしている。By the way, in the above-mentioned one, the needle valve is reciprocally driven in the axial direction inside the valve body, and the needle valve is seated on the valve seat in the valve body by the movement in the valve closing direction. When the annular seat portion formed on the needle valve side is worn, the valve opening pressure changes significantly and the sealability of the seat portion is also significantly reduced.
【０００４】ところが、前述の構造にあっては、ニード
ルバルブのシート部に環状ギャップを設けることで、ニ
ードルバルブのシート部とバルブボデーの弁座との接触
面積が減少し面圧が大となるため、ニードルバルブのシ
ート部がバルブボデーの弁座への着座／離座の繰返しに
より、バルブボデーとニードルバルブとの摩耗が促進さ
れ、結局、バルブボデーに対するニードルバルブのシー
ト部の位置が軸方向に移動し有効シート面積が変化して
しまうという新たな不具合の発生が考えられる。ここ
で、有効シート面積とは、流体が通過するニードルバル
ブの最大径に対応する面積からニードルバルブが弁座に
着座するシート部の径に対応する面積を減算した面積を
言う。この有効シート面積が変化すると、流体制御バル
ブ装置の流体制御における制御タイミングや制御量が変
化することとなる。However, in the above-described structure, by providing the annular gap in the seat portion of the needle valve, the contact area between the seat portion of the needle valve and the valve seat of the valve body is reduced and the surface pressure is increased. As a result, the seat portion of the needle valve is repeatedly seated / seated on / from the valve seat of the valve body, which promotes wear between the valve body and the needle valve. It is conceivable that a new problem will occur in that the effective sheet area will change due to the movement to. Here, the effective seat area means an area obtained by subtracting the area corresponding to the diameter of the seat portion where the needle valve is seated on the valve seat from the area corresponding to the maximum diameter of the needle valve through which the fluid passes. When this effective seat area changes, the control timing and control amount in the fluid control of the fluid control valve device also change.
【０００５】そこで、この発明はかかる不具合を解決す
るためになされたもので、バルブボデーの弁座への着座
／離座の繰返しによるニードルバルブの変形を抑制し、
流体制御における制御タイミングや制御量を適正に維持
可能な流体制御バルブ装置及びその製造方法の提供を課
題としている。Therefore, the present invention has been made to solve such a problem, and suppresses the deformation of the needle valve due to the repeated seating / separating of the valve body on the valve seat,
An object of the present invention is to provide a fluid control valve device capable of properly maintaining control timing and control amount in fluid control, and a manufacturing method thereof.
【０００６】[0006]
【課題を解決するための手段】請求項１の流体制御バル
ブ装置によれば、ニードルバルブが閉弁方向への移動で
着座されるバルブボデー内の弁座となる部分が、ニード
ルバルブよりヤング率が低くなるよう形成される。この
ように、ニードルバルブのヤング率に対して弁座部位の
ヤング率が低いことから、ニードルバルブのバルブボデ
ー内の弁座への着座時に、弁座部位の方が弾性変形さ
れ、ニードルバルブの摩耗が抑制される。また、バルブ
ボデーの弁座部位はヤング率が低いことから、バルブボ
デーとニードルバルブとの間のシール性も十分に確保さ
れる。According to another aspect of the fluid control valve device of the present invention, the portion of the valve body in which the needle valve is seated by the movement in the valve closing direction, which is the valve seat, has a Young's modulus higher than that of the needle valve. Is formed to be low. In this way, since the Young's modulus of the valve seat portion is lower than the Young's modulus of the needle valve, when the needle valve is seated on the valve seat in the valve body, the valve seat portion is elastically deformed and the needle valve Wear is suppressed. Further, since the valve seat portion of the valve body has a low Young's modulus, a sufficient sealing property between the valve body and the needle valve is ensured.
【０００７】請求項２の流体制御バルブ装置における弁
座では、バルブボデーと別体にて形成されるため、ニー
ドルバルブよりヤング率の低いものが適宜、選択自在で
ある。このように、ニードルバルブのヤング率に対して
弁座としての別体のヤング率が低いことから、ニードル
バルブのバルブボデー内への着座時に、バルブボデー内
の弁座としての別体の方が弾性変形され、ニードルバル
ブの摩耗が抑制される。また、バルブボデーの弁座とし
ての別体はヤング率が低いことから、バルブボデーとニ
ードルバルブとの間のシール性も十分に確保される。Since the valve seat in the fluid control valve device according to the second aspect is formed separately from the valve body, a valve seat having a lower Young's modulus than the needle valve can be appropriately selected. In this way, since the Young's modulus of the separate body as the valve seat is lower than the Young's modulus of the needle valve, when the needle valve is seated in the valve body, the separate body as the valve seat in the valve body is better. The needle valve is elastically deformed and wear of the needle valve is suppressed. Further, since the separate body as the valve seat of the valve body has a low Young's modulus, a sufficient sealing property between the valve body and the needle valve is secured.
【０００８】請求項３の流体制御バルブ装置における弁
座では、バルブボデー内の他の部分と表面処理を変えて
形成されるため、ニードルバルブよりヤング率を低くす
ることができる。このように、ニードルバルブのヤング
率に対してバルブボデー内の弁座となる表面処理されな
い部分のヤング率が低いことから、ニードルバルブのバ
ルブボデー内への着座時に、バルブボデー内の弁座の方
が弾性変形され、ニードルバルブの摩耗が抑制される。
また、バルブボデーの弁座となる表面処理部分はヤング
率が低いことから、バルブボデーとニードルバルブとの
間のシール性も十分に確保される。In the valve seat of the fluid control valve device according to the third aspect, the Young's modulus of the valve seat can be made lower than that of the needle valve because the valve seat is formed by different surface treatment from the other parts in the valve body. In this way, the Young's modulus of the surface-untreated portion of the valve body in the valve body is low relative to the Young's modulus of the needle valve, so that when the needle valve is seated in the valve body, the valve seat in the valve body One is elastically deformed, and wear of the needle valve is suppressed.
In addition, since the surface-treated portion that serves as the valve seat of the valve body has a low Young's modulus, a sufficient sealability between the valve body and the needle valve is ensured.
【０００９】請求項４の流体制御バルブ装置の製造方法
によれば、ニードルバルブが閉弁方向への移動で着座さ
れるバルブボデー内の弁座となる部分にニードルバルブ
よりもヤング率の低い別部材が接合されている。このよ
うに、ニードルバルブのヤング率に対して弁座となる部
分に接合された別部材のヤング率が低いことから、ニー
ドルバルブのバルブボデー内の弁座への着座時に、別部
材の方が弾性変形され、ニードルバルブの摩耗が抑制さ
れる。また、バルブボデーに接合された別部材はヤング
率が低いことから、バルブボデーとニードルバルブとの
間のシール性も十分に確保される。According to the manufacturing method of the fluid control valve device of the fourth aspect, a portion having a Young's modulus lower than that of the needle valve is formed in a portion of the valve body where the needle valve is seated by the movement in the valve closing direction. The members are joined. In this way, since the Young's modulus of the separate member joined to the valve seat is lower than the Young's modulus of the needle valve, the separate member is better when seated on the valve seat in the valve body of the needle valve. The needle valve is elastically deformed and wear of the needle valve is suppressed. Further, since the separate member joined to the valve body has a low Young's modulus, a sufficient sealing property between the valve body and the needle valve is ensured.
【００１０】請求項５の流体制御バルブ装置の製造方法
によれば、バルブボデーをニードルバルブよりもヤング
率の低い材料にて形成し、ニードルバルブが閉弁方向へ
の移動で着座するバルブボデー内の弁座となる部分を覆
い、その他の表面部分にヤング率を上昇するための表面
処理が行われる。このように、ニードルバルブのヤング
率に対してバルブボデー内の弁座となる表面処理されな
い部分のヤング率が低いことから、ニードルバルブのバ
ルブボデー内の弁座への着座時に、バルブボデー内の弁
座となる部分の方が弾性変形され、ニードルバルブの摩
耗が抑制される。また、バルブボデーの弁座となる表面
処理部分はヤング率が低いことから、バルブボデーとニ
ードルバルブとの間のシール性も十分に確保される。According to the method of manufacturing the fluid control valve device of the fifth aspect, the valve body is formed of a material having a lower Young's modulus than the needle valve, and the needle valve is seated by the movement in the valve closing direction. The surface treatment for increasing the Young's modulus is performed on the other surface part of the surface of the valve seat. In this way, the Young's modulus of the surface-untreated portion of the valve body in the valve body is low relative to the Young's modulus of the needle valve, so that when the needle valve is seated on the valve seat in the valve body, The valve seat portion is elastically deformed, and wear of the needle valve is suppressed. In addition, since the surface-treated portion that serves as the valve seat of the valve body has a low Young's modulus, a sufficient sealability between the valve body and the needle valve is ensured.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態を実施
例に基づいて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below based on Examples.
【００１２】図１は本発明の実施の形態の一実施例にか
かる流体制御バルブ装置の要部構成を示す断面図であ
る。また、図２は図１の拡大部分断面図である。FIG. 1 is a cross-sectional view showing the essential structure of a fluid control valve device according to an example of an embodiment of the present invention. 2 is an enlarged partial sectional view of FIG.
【００１３】図１及び図２において、１００は流体制御
バルブ装置としてのインジェクタ（燃料噴射弁）であ
り、インジェクタ１００の閉弁状態における先端部分を
示す。インジェクタ１００の先端部分は、バルブボデー
１０とその内部を軸方向に沿って往復駆動されるニード
ルバルブ２０とから構成されている。なお、バルブボデ
ー１０の先端側周面には複数の噴孔１１が穿たれてい
る。また、本実施例におけるバルブボデー１０の先端内
壁で噴孔１１より上流側の弁座部分には別体からなる環
状の弁座部材１５が接合されている。このため、インジ
ェクタ１００が閉弁状態にあっては、ニードルバルブ２
０が閉弁方向へ移動され、そのシート部２１がバルブボ
デー１０の先端内壁に接合された弁座部材１５に着座さ
れている。In FIGS. 1 and 2, reference numeral 100 denotes an injector (fuel injection valve) as a fluid control valve device, which shows a tip portion of the injector 100 in a valve closed state. The tip portion of the injector 100 is composed of a valve body 10 and a needle valve 20 that is reciprocally driven in the interior thereof in the axial direction. A plurality of injection holes 11 are bored in the peripheral surface of the valve body 10 on the front end side. Further, an annular valve seat member 15 which is a separate body is joined to the valve seat portion on the upstream side of the injection hole 11 on the inner wall of the tip of the valve body 10 in this embodiment. Therefore, when the injector 100 is closed, the needle valve 2
0 is moved in the valve closing direction, and its seat portion 21 is seated on the valve seat member 15 joined to the inner wall of the tip of the valve body 10.
【００１４】バルブボデー１０及びニードルバルブ２０
は軸方向に沿った往復駆動による摩耗を防止するため、
ヤング率の高い材料が選択され、また、互いの摺動面に
おけるヤング率を高めるよう表面処理が施されている。
ニードルバルブ２０の材料のヤング率（縦弾性係数）に
対してバルブボデー１０に接合された弁座部材１５の材
料のヤング率は低く設定されている。この弁座部材１５
の材料としては、例えば、銅、アルミニウム系金属を用
いることができる。Valve body 10 and needle valve 20
To prevent wear due to reciprocating drive along the axial direction,
A material having a high Young's modulus is selected, and a surface treatment is performed so as to increase the Young's modulus on the sliding surfaces of each other.
The Young's modulus of the material of the valve seat member 15 joined to the valve body 10 is set lower than the Young's modulus (longitudinal elastic modulus) of the material of the needle valve 20. This valve seat member 15
As the material of, for example, copper or aluminum-based metal can be used.
【００１５】次に、その動作について説明する。Next, the operation will be described.
【００１６】図１及び図２において、図示しない燃料噴
射ポンプ側からインジェクタ１００に燃料が圧送され、
所定の燃料噴射タイミングにてニードルバルブ２０が開
弁方向に移動されることで燃料噴射が開始される。この
とき、インジェクタ１００内の燃料は、ニードルバルブ
２０のシート部２１と対向するバルブボデー１０内壁と
の隙間を通過し、図示しない内燃機関の燃焼室内に噴射
供給される。In FIG. 1 and FIG. 2, fuel is pressure-fed to the injector 100 from the fuel injection pump side (not shown),
Fuel injection is started by moving the needle valve 20 in the valve opening direction at a predetermined fuel injection timing. At this time, the fuel in the injector 100 passes through the gap between the seat portion 21 of the needle valve 20 and the inner wall of the valve body 10 that faces the needle valve 20, and is injected and supplied into the combustion chamber of the internal combustion engine (not shown).
【００１７】そして、燃料の圧送が終了し、インジェク
タ１００内の燃圧（燃料圧力）が低下すると同時に、ニ
ードルバルブ２０が閉弁方向に移動される。すると、ニ
ードルバルブ２０のシート部２１はバルブボデー１０の
先端内壁に接合された弁座部材１５に衝撃的に着座され
る。ここで、ニードルバルブ２０のシート部２１のヤン
グ率に対して弁座部材１５のヤング率が低いことから、
弁座部材１５の方が弾性変形し、ニードルバルブ２０の
シート部２１の摩耗を抑制することができる。また、バ
ルブボデー１０の先端内壁に接合された弁座部材１５は
ヤング率が低いことから、ガスケットと同様の機能を有
し、バルブボデー１０とニードルバルブ２０との間のシ
ール性も十分に確保することができる。なお、図２の拡
大部分断面図には、ニードルバルブ２０のシート部２１
が弁座部材１５に着座で食込んで、弁座部材１５が多少
変形されている状態が示されている。At the same time when the fuel pressure feed is completed and the fuel pressure (fuel pressure) in the injector 100 decreases, the needle valve 20 is moved in the valve closing direction. Then, the seat portion 21 of the needle valve 20 is seated on the valve seat member 15 joined to the inner wall of the tip of the valve body 10 in a shocking manner. Here, since the Young's modulus of the valve seat member 15 is lower than the Young's modulus of the seat portion 21 of the needle valve 20,
The valve seat member 15 is elastically deformed, and wear of the seat portion 21 of the needle valve 20 can be suppressed. Further, since the valve seat member 15 joined to the inner wall of the tip of the valve body 10 has a low Young's modulus, it has a function similar to that of a gasket and sufficiently secures the sealing property between the valve body 10 and the needle valve 20. can do. In the enlarged partial sectional view of FIG. 2, the seat portion 21 of the needle valve 20 is shown.
Is seated in the valve seat member 15 by sitting, and the valve seat member 15 is slightly deformed.
【００１８】次に、バルブボデー１０の先端内壁と弁座
部材１５との接合について述べる。Next, the joining of the inner wall of the tip of the valve body 10 and the valve seat member 15 will be described.
【００１９】バルブボデー１０は合金鋼材の丸棒からの
削出しにて形成される。このとき、バルブボデー１０の
先端内壁のニードルバルブ２０が着座する部位に対し
て、環状の弁座部材１５の挿入形状が形成される。一
方、バルブボデー１０側の先端内壁に形成される内径寸
法に対して弁座部材１５の外径寸法は、締まりばめの寸
法関係となるよう形成される。そして、バルブボデー１
０とニードルバルブ２０との組付工程前において、バル
ブボデー１０内に弁座部材１５が少量の蝋材を伴って挿
嵌される。この後、加熱されることでバルブボデー１０
の先端内壁に弁座部材１５が接合完了される。The valve body 10 is formed by cutting an alloy steel material out of a round bar. At this time, the insertion shape of the annular valve seat member 15 is formed at the portion of the inner wall of the tip end of the valve body 10 where the needle valve 20 is seated. On the other hand, the outer diameter of the valve seat member 15 is formed to have a dimensional relationship of interference fit with the inner diameter formed on the inner wall of the tip on the valve body 10 side. And valve body 1
The valve seat member 15 is inserted into the valve body 10 with a small amount of wax material before the assembling process of the needle valve 20 and the valve 0. After that, by heating, the valve body 10
The valve seat member 15 is completely joined to the inner wall of the tip of the valve.
【００２０】この他、バルブボデー１０内への弁座部材
１５の接合では、圧入、焼き嵌め、冷し嵌めを利用する
ことができ、これらを適宜、組合わせることもできる。In addition to the above, in the joining of the valve seat member 15 into the valve body 10, press fitting, shrink fitting, or cold fitting can be used, and these can be appropriately combined.
【００２１】このように、本実施例の流体制御バルブ装
置としてのインジェクタ１００は、バルブボデー１０と
その内部を軸方向に沿って往復駆動され流体を制御する
ニードルバルブ２０とを具備し、ニードルバルブ２０が
閉弁方向への移動で着座するバルブボデー１０内の弁座
をニードルバルブ２０よりヤング率が低くなるよう形成
するものである。また、本実施例の流体制御バルブ装置
としてのインジェクタ１００の弁座は、バルブボデー１
０と別体である弁座部材１５にて形成するものである。As described above, the injector 100 as the fluid control valve device of the present embodiment comprises the valve body 10 and the needle valve 20 which is reciprocally driven in the axial direction thereof to control the fluid. The valve seat in the valve body 10 on which the valve seat 20 is seated by the movement in the valve closing direction is formed to have a Young's modulus lower than that of the needle valve 20. Further, the valve seat of the injector 100 as the fluid control valve device of the present embodiment is the valve body 1
It is formed by the valve seat member 15 which is a separate body from 0.
【００２２】つまり、ニードルバルブ２０が閉弁方向に
移動され着座されるバルブボデー１０内の弁座となる部
分がバルブボデー１０の材料にかかわらず、ニードルバ
ルブ２０よりヤング率の低い適当な材料からなる別体の
弁座部材１５にて形成される。すると、ニードルバルブ
２０のシート部２１のバルブボデー１０内の弁座部材１
５への着座時に、ニードルバルブ２０のシート部２１の
ヤング率に対して弁座部材１５のヤング率が低いことか
ら、弁座部材１５の方が弾性変形し、ニードルバルブ２
０のシート部２１の摩耗を抑制することができる。ま
た、バルブボデー１０の先端内壁に接合された弁座部材
１５はヤング率が低いことから、バルブボデー１０とニ
ードルバルブ２０との間のシール性も十分に確保するこ
とができる。That is, regardless of the material of the valve body 10, the portion of the valve body 10 on which the needle valve 20 is moved and seated in the valve closing direction is made of an appropriate material having a lower Young's modulus than the needle valve 20. It is formed of a separate valve seat member 15. Then, the valve seat member 1 in the valve body 10 of the seat portion 21 of the needle valve 20.
Since the Young's modulus of the valve seat member 15 is lower than the Young's modulus of the seat portion 21 of the needle valve 20 when seated on the valve 5, the valve seat member 15 is elastically deformed and the needle valve 2
It is possible to suppress wear of the seat portion 21 of 0. Further, since the valve seat member 15 joined to the inner wall of the tip of the valve body 10 has a low Young's modulus, it is possible to sufficiently secure the sealing property between the valve body 10 and the needle valve 20.
【００２３】また、本実施例の流体制御バルブ装置とし
てのインジェクタ１００の製造方法は、バルブボデー１
０とその内部を軸方向に沿って往復駆動され流体を制御
するニードルバルブ２０とからなり、ニードルバルブ２
０が閉弁方向への移動で着座するバルブボデー１０内の
弁座となる部分にニードルバルブ２０よりもヤング率の
低い別部材としての弁座部材１５を接合する工程にて達
成することができる。このような製造方法によれば、バ
ルブボデー１０内の先端内壁にニードルバルブ２０のシ
ート部２１よりもヤング率の低い弁座となる部分を別部
材である弁座部材１５の接合にて形成することができ
る。The method of manufacturing the injector 100 as the fluid control valve device of this embodiment is the same as that of the valve body 1
0 and a needle valve 20 that is reciprocally driven in the axial direction thereof to control the fluid.
This can be achieved in the step of joining the valve seat member 15 as a separate member having a Young's modulus lower than that of the needle valve 20 to the portion of the valve body 10 where 0 is seated by the movement in the valve closing direction, which becomes the valve seat. . According to such a manufacturing method, the valve seat having a lower Young's modulus than the seat portion 21 of the needle valve 20 is formed on the inner wall of the tip end of the valve body 10 by joining the valve seat member 15, which is a separate member. be able to.
【００２４】ところで、上記実施例では、バルブボデー
１０の先端内壁に別体からなる弁座部材１５として銅、
アルミニウム系金属材料を用いて弁座を形成している
が、本発明を実施する場合には、これに限定されるもの
ではなく、弁座部材１５としてはこの他、ヤング率の低
い材料として、ゴム・樹脂系の非金属材料を接合して弁
座を形成することもできる。このような構成によって
も、上述と同様の作用・効果を得ることができる。By the way, in the above embodiment, copper is used as the valve seat member 15 which is a separate member on the inner wall of the tip of the valve body 10.
Although the valve seat is formed by using an aluminum-based metal material, the present invention is not limited to this, and the valve seat member 15 may be a material having a low Young's modulus. The valve seat can be formed by joining rubber / resin-based non-metallic materials. Even with such a configuration, the same operation and effect as described above can be obtained.
【００２５】また、上記実施例では、バルブボデー１０
の先端内壁に別体からなる弁座部材１５を接合して弁座
を形成しているが、本発明を実施する場合には、これに
限定されるものではなく、このような弁座は、バルブボ
デー内の他の部分と表面処理を変えて形成することもで
きる。Further, in the above embodiment, the valve body 10
The valve seat member 15 formed as a separate body is joined to the inner wall of the tip of the valve seat to form the valve seat. However, the present invention is not limited to this, and such a valve seat is It can also be formed by changing the surface treatment with other parts in the valve body.
【００２６】この流体制御バルブ装置としてのインジェ
クタの製造方法は、バルブボデーとその内部を軸方向に
沿って往復駆動され流体を制御するニードルバルブとか
らなり、バルブボデーをニードルバルブよりもヤング率
の低い材料にて形成し、ニードルバルブが閉弁方向への
移動で着座するバルブボデー内の弁座となる部分を覆
い、その他の表面部分にヤング率を上昇するための表面
処理を行う一連の工程にて達成することができる。The method of manufacturing the injector as the fluid control valve device comprises a valve body and a needle valve that is reciprocally driven in the axial direction to control the fluid, and has a Young's modulus higher than that of the needle valve. A series of steps that is made of a low material, covers the part that becomes the valve seat in the valve body where the needle valve is seated by the movement in the closing direction, and performs surface treatment on other surface parts to increase the Young's modulus Can be achieved in.
【００２７】即ち、バルブボデー内のニードルバルブが
着座する弁座となる部分を覆ったのち、他の表面部分に
浸炭焼入れ、軟窒化等のヤング率を上昇、即ち、耐摩耗
性を向上するための表面処理を行うことで、バルブボデ
ー内でニードルバルブのヤング率より低い弁座となる部
分を形成することができ、上述の実施例と同様の作用・
効果が期待できる。That is, in order to improve the Young's modulus of carburizing and quenching the other surface of the valve body after covering the portion of the valve body on which the needle valve is seated and which is to be seated, that is, to improve wear resistance. By performing the surface treatment of (1), it is possible to form a portion of the valve body having a valve seat lower than the Young's modulus of the needle valve in the valve body.
You can expect an effect.
【図１】 図１は本発明の実施の形態の一実施例にかか
る流体制御バルブ装置の要部構成を示す断面図である。FIG. 1 is a cross-sectional view showing a main configuration of a fluid control valve device according to an example of an embodiment of the present invention.
【図２】 図２は図１の拡大部分断面図である。FIG. 2 is an enlarged partial sectional view of FIG.
１０ バルブボデー １５ 弁座部材 ２０ ニードルバルブ ２１ シート部 １００ インジェクタ（流体制御バルブ装置） 10 valve body 15 Valve seat member 20 Needle valve 21 Seat 100 injector (fluid control valve device)
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ０２Ｍ 61/16 Ｆ０２Ｍ 61/16 Ｍ Ｐ Ｆターム(参考） 3G066 AA07 AB02 AD12 BA36 BA49 CC01 CC14 CC20 CD10 CD15 CD17 CD21 CE13 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) F02M 61/16 F02M 61/16 MPF term (reference) 3G066 AA07 AB02 AD12 BA36 BA49 CC01 CC14 CC20 CD10 CD15 CD17 CD21 CE13
Claims (5)
て往復駆動され流体を制御するニードルバルブとを具備
し、 前記ニードルバルブが閉弁方向への移動で着座する前記
バルブボデー内の弁座を前記ニードルバルブよりヤング
率が低くなるよう形成することを特徴とする流体制御バ
ルブ装置。1. A valve seat in the valve body, comprising a valve body and a needle valve that is reciprocally driven in the axial direction inside the valve body to control a fluid, and the needle valve is seated by a movement in a valve closing direction. Is formed to have a Young's modulus lower than that of the needle valve.
て形成することを特徴とする請求項１に記載の流体制御
バルブ装置。2. The fluid control valve device according to claim 1, wherein the valve seat is formed separately from the valve body.
部分と表面処理を変えて形成することを特徴とする請求
項１に記載の流体制御バルブ装置。3. The fluid control valve device according to claim 1, wherein the valve seat is formed by different surface treatment from that of other portions in the valve body.
て往復駆動され流体を制御するニードルバルブとからな
る流体制御バルブ装置の製造方法であって、 前記ニードルバルブが閉弁方向への移動で着座する前記
バルブボデー内の弁座となる部分に前記ニードルバルブ
よりもヤング率の低い別部材を接合することを特徴とす
る流体制御バルブ装置の製造方法。4. A method of manufacturing a fluid control valve device comprising a valve body and a needle valve that is reciprocally driven in the axial direction inside the valve body to control a fluid, wherein the needle valve is movable in a valve closing direction. A method for manufacturing a fluid control valve device, characterized in that a separate member having a Young's modulus lower than that of the needle valve is joined to a seating portion of the valve body that serves as a valve seat.
て往復駆動され流体を制御するニードルバルブとからな
る流体制御バルブ装置の製造方法であって、 前記バルブボデーを前記ニードルバルブよりもヤング率
の低い材料にて形成し、前記ニードルバルブが閉弁方向
への移動で着座する前記バルブボデー内の弁座となる部
分を覆い、その他の表面部分にヤング率を上昇するため
の表面処理を行うことを特徴とする流体制御バルブ装置
の製造方法。5. A method of manufacturing a fluid control valve device comprising a valve body and a needle valve that is reciprocally driven in the axial direction thereof to control a fluid, wherein the valve body has a Young's modulus higher than that of the needle valve. Formed of a material having a low temperature, the needle valve covers a portion of the valve body where the needle valve is seated by the movement in the valve closing direction and serves as a valve seat, and other surface portions are subjected to surface treatment for increasing Young's modulus. A method for manufacturing a fluid control valve device, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001258880A JP2003065189A (en) | 2001-08-29 | 2001-08-29 | Fluid control valve and manufacturing method of same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001258880A JP2003065189A (en) | 2001-08-29 | 2001-08-29 | Fluid control valve and manufacturing method of same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003065189A true JP2003065189A (en) | 2003-03-05 |
Family
ID=19086328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001258880A Pending JP2003065189A (en) | 2001-08-29 | 2001-08-29 | Fluid control valve and manufacturing method of same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003065189A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008115832A (en) * | 2006-11-08 | 2008-05-22 | Nikki Co Ltd | Seal structure of sheet member in fuel injection valve |
| JP2008121679A (en) * | 2006-11-09 | 2008-05-29 | Robert Bosch Gmbh | Fuel injection valve |
| JP2012126059A (en) * | 2010-12-16 | 2012-07-05 | Arburg Gmbh & Co Kg | Device for manufacturing three dimensional object |
-
2001
- 2001-08-29 JP JP2001258880A patent/JP2003065189A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008115832A (en) * | 2006-11-08 | 2008-05-22 | Nikki Co Ltd | Seal structure of sheet member in fuel injection valve |
| JP4690292B2 (en) * | 2006-11-08 | 2011-06-01 | 株式会社ニッキ | Seal structure of seat member in fuel injection valve |
| JP2008121679A (en) * | 2006-11-09 | 2008-05-29 | Robert Bosch Gmbh | Fuel injection valve |
| JP2014015940A (en) * | 2006-11-09 | 2014-01-30 | Robert Bosch Gmbh | Fuel injection valve |
| US8893989B2 (en) | 2006-11-09 | 2014-11-25 | Robert Bosch Gmbh | Fuel injector |
| JP2015072019A (en) * | 2006-11-09 | 2015-04-16 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ | Fuel injection valve |
| JP2012126059A (en) * | 2010-12-16 | 2012-07-05 | Arburg Gmbh & Co Kg | Device for manufacturing three dimensional object |
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