JP2004144213A - Mushroom type valve element - Google Patents

Mushroom type valve element Download PDF

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Publication number
JP2004144213A
JP2004144213A JP2002310384A JP2002310384A JP2004144213A JP 2004144213 A JP2004144213 A JP 2004144213A JP 2002310384 A JP2002310384 A JP 2002310384A JP 2002310384 A JP2002310384 A JP 2002310384A JP 2004144213 A JP2004144213 A JP 2004144213A
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Prior art keywords
lubricating oil
cap
cylinder
supply port
main body
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JP2002310384A
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JP4160359B2 (en
Inventor
Katsura Kawakami
川上　桂
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Lube Corp
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Lube Corp
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Priority to JP2002310384A priority Critical patent/JP4160359B2/en
Priority to CNB2003101043523A priority patent/CN100366968C/en
Priority to KR1020030074491A priority patent/KR101006629B1/en
Publication of JP2004144213A publication Critical patent/JP2004144213A/en
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Publication of JP4160359B2 publication Critical patent/JP4160359B2/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K21/00—Fluid-delivery valves, e.g. self-closing valves
    • F16K21/04—Self-closing valves, i.e. closing automatically after operation
    • F16K21/16—Self-closing valves, i.e. closing automatically after operation closing after a predetermined quantity of fluid has been delivered
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F16K1/38—Valve members of conical shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To further improve durability of a forming section of an upside seal surface so as to stabilize sealing by the upside seal surface even for a long time use. <P>SOLUTION: This mushroom type valve element has a substantially columnar body 10. The body 10 is disposed in a cylinder 1 having a supply port 2 of a lubricating oil and a pipe 6 for passing the lubricating oil and has a downside seal surface 11 for closing the supply port 2 side of the cylinder 1 during non-supply of the lubricating oil. The upside of the body 10 is provided with the upside seal surface 12 for closing an inlet 6a of the pipe 6 during supply of the lubricating oil. The upside edge 10a of a body 10 is provided with a mushroom-like lip 20 that expands and opens from the upside edge 10a to the upside and comes into elastic-contacts with the inner wall of the cylinder 1 on its outside, and the upside seal surface 12 is formed on the upper surface 30 of the body 10. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、オイルやグリス等の潤滑油が流通するシリンダ内に設けられ笠状のリップを備えた笠型弁体に関する。
【０００２】
【従来の技術】
一般に、笠型弁体は、例えば、オイルやグリス等の潤滑油を吐出する定量バルブに用いられるもので、例えば、特許文献１（特開平７−１７４２５１号公報）記載のものが知られている。
この笠型弁体は、図８乃至図１０に示すように、ゴムで一体形成されており、潤滑油の供給口２を有し内部に潤滑油が流通するパイプ６を備えた定量バルブＴのシリンダ１内であって、潤滑油の供給口２とパイプ６との間の空間に設けられている。
【０００３】
この笠型弁体Ｖは、潤滑油の非供給時にシリンダ１の供給口２側に閉じる下側シール面１１を有した略円柱状の本体１０を備え、この本体１０の上側に潤滑油の供給時にパイプ６の入り口６ａを閉じる上側シール面１２を設けている。上側シール面１２は本体１０の上側に一体形成され本体１０よりも半径の小さい円柱状の柱状体１３の上面に形成されている。また、本体１０の上側縁１０ａには、この上側縁１０ａから上側に拡開し、外側の先端周縁２２がシリンダ１の内壁に弾接する笠状のリップ２０が設けられ、本体１０の下側には、下側シール面１１から下側に延び、略円柱状で上記の供給口２と同軸に設けられるガイドロッド２１が設けられている。
【０００４】
図９に示すように、この笠型弁体Ｖを用いた定量バルブＴにおいては、シリンダ１の供給口２から潤滑油が供給されると、供給される潤滑油の圧力によって笠型弁体Ｖが上方側へ移動し、吐出口４へ連通したパイプ６の入り口６ａを上側シール面１２で閉塞するとともに、リップ２０が内側へ縮径して潤滑油を通過させる。通過した潤滑油は、パイプ６の外側に摺動可能に嵌合されかつシリンダ１の内壁に摺接するＯリングを含み常時供給口２側にスプリング８で付勢されるピストン９をこのスプリング８の付勢力に抗して押圧し、この押圧により形成される供給側シリンダ室１５に充填されていく。また、このピストン９の押圧により、吐出側シリンダ室１６に充填された潤滑油が、パイプ６と吐出側シリンダ室１６とに連通する貫通孔１７から押し出されて吐出口４から吐出していく。その後、ピストン９の吐出口４側の端面が、シリンダ１内の停止段部１８に当接して停止すると吐出が終了し、これによりピストン９のストローク分の潤滑油が吐出される。
【０００５】
そして、図１０に示すように、供給口２からの潤滑油の供給が停止して油圧が無くなると、スプリング８の付勢力によりピストン９が供給口２側に押圧され、パイプ６の供給口２側に設けた段状のストッパ１９に当接する。この際、ピストン９の押圧により供給側シリンダ室１５に充填された潤滑油に圧力が作用し、笠型弁体Ｖが供給口２側に移動し、供給口２の段部２ａを下側シール面１１で閉塞し、更に、リップ２０が拡開し先端周縁２２がシリンダ１の内壁に弾接してシールして、潤滑油の供給口２側への流出を抑止している。そして、供給側シリンダ室１５に充填された潤滑油がパイプ６の入り口６ａから流入し、ピストン９の移動により吐出側シリンダ室１６が負圧になることから、貫通孔１７から吐出側シリンダ室１６に潤滑油が流入し、次の吐出分の潤滑油として貯留される。このような操作が反復されて、定量の潤滑油が吐出口４から吐出される。
【０００６】
【特許文献１】
特開平７−１７４２４８号公報
【０００７】
【発明が解決しようとする課題】
ところで、このような笠型弁体Ｖにあっては、図８に示すように、シリンダ１の供給口２から潤滑油が供給されると、供給される潤滑油の圧力によって笠型弁体Ｖが上方側へ移動し、パイプ６へ連通したパイプ６の入り口６ａを上側シール面１２で閉塞するが、この上側シール面１２が形成された柱状体１３は本体１０の上側に一体形成され本体１０よりも半径の小さい円柱状に形成されているので、長年の使用により、柱状体１３が倒れやすくなったり、座屈しやすくなったり、部分的に崩れてしまったりする等の耐久性を損ねる事態が万一生じると、上側シール面１２によるシールが不安定になってシール不良を生じる虞があり、そのため、笠型弁体Ｖの耐久性をより一層向上させたいという要請がある。
【０００８】
本発明は上記の問題点に鑑みて為されたもので、長年の使用によっても、上側シール面によるシールを安定化できるように上側シール面の形成部の耐久性をより一層向上させた笠型弁体を提供することを目的とする。
【０００９】
【課題を解決するための手段】
このような目的を達成するための本発明の笠型弁体は、潤滑油の供給口を有し内部に潤滑油が流通するパイプを備えたシリンダ内に設けられ、潤滑油の非供給時に上記シリンダの供給口側を閉じる下側シール面を有した略円柱状の本体を備え、該本体の上側に潤滑油の供給時に上記パイプの入り口を閉じる上側シール面を設け、上記本体の上側縁に該上側縁から上側に拡開し外側がシリンダの内壁に弾接する笠状のリップを形成してなる笠型弁体において、上記上側シール面を上記本体の上面で形成した構成としている。
【００１０】
これにより、笠型弁体が、潤滑油の供給時にパイプの入り口を閉じ、潤滑油の非供給時にパイプから離れる動作が反復されるが、上側シール面は、本体の上面で形成したので、本体は従来の柱状体に比較して大きいことからそれだけ姿勢が安定しており、また、シール面も大きくなることから、パイプから相対的に受ける力を確実に受けることができ、そのため、倒れやすくなったり、座屈しやすくなったり、部分的に崩れてしまったりする等の事態がほとんどなくなり、耐久性が大幅に向上させられる。その結果、上側シール面の形成部の耐久性がより一層向上させられるので、長年の使用によっても、上側シール面によるシールが安定化され、シール不良が生じる事態が防止される。
【００１１】
そして、必要に応じ、上記本体の下側に上記供給口にガイドされ該本体と同軸のガイドロッドを突設し、該ガイドロッドの外側に上記供給口の内面に摺接し軸方向に延びる複数の凸条を設けた構成としている。これにより、ガイドロッドに設けられる凸条により笠型弁体がシリンダ内で傾く事態が防止され、そのため、上側シール面がパイプに均等に当接することから、この点でも、倒れやすくなったり、座屈しやすくなったり、部分的に崩れてしまったりする等の事態がほとんどなくなり、耐久性が大幅に向上させられる。
【００１２】
また、必要に応じ、上記リップの基端部と先端部との間の外周上にシリンダに弾接してシールを行なうシール部を形成した構成としている。これにより、笠型弁体の成形型がリップの先端外周で分離するものにおいて、シール部には型の分離線が作用しないので、シール部にバリが生じる事態を防止することができ、そのため、バリによりシール性を損なう事態を防止することができる。
この場合、上記シール部の先端を断面山形に形成した構成とすれば、頂部が弾接するのでシールが確実になる。
【００１３】
【発明の実施の形態】
以下、添付図面に基づいて、本発明の実施の形態に係る笠型弁体について詳細に説明する。尚、上記と同様のものには同一の符号を付して説明する。
図１乃至図４には、本発明の実施の形態に係る笠型弁体Ｖを示している。この笠型弁体Ｖは、ゴムなどの適宜の材質で一体成形され、上記と同様の定量バルブＴに用いられるものである。
【００１４】
笠型弁体Ｖは、オイルやグリスなどの潤滑油の供給口２を有し内部に潤滑油が流通するパイプ６を備えた定量バルブＴのシリンダ１内であって、潤滑油の供給口２とパイプ６の間の空間に設けられている。この笠型弁体Ｖは、潤滑油の非供給時にシリンダ１の供給口２側を閉じる下側シール面１１を有した略円柱状の本体１０を備え、この本体１０の上側に潤滑油の供給時にパイプ６の入り口６ａを閉じる上側シール面１２を設けている。実施の形態では、上側シール面１２は、本体１０の上面３０で形成されている。
【００１５】
また、本体１０の上側縁１０ａには、この上側縁１０ａから上側に拡開し、外側がシリンダ１の内壁に弾接する笠状のリップ２０が設けられている。実施の形態では、リップ２０の基端部２０ａ（本体の上側縁１０ａ）と先端部２０ｂ（２２）との間の外周上に、シリンダ１に弾接してシールを行なうシール部２３が形成されている。このシール部２３の先端は、断面山形に形成されており、山形の頂部がシリンダ１面に当接する。また、外側の先端周縁２２もシリンダ１の内壁に弾接する。
【００１６】
更に、本体１０の下側には、下側シール面１１から下側に延び、略円柱状で上記の供給口２と同軸に設けられるガイドロッド２１が突設されている。このガイドロッド２１の外側には、供給口２の内面に摺接し軸方向に延びる複数の凸条２４が一体形成されている。凸条２４は、ガイドロッド２１に等角度関係（１２０°毎）で３つ設けられている。また、ガイドロッド２１の下側部分は、先端先細りに形成されている。
【００１７】
この実施の形態に係る笠型弁体Ｖを製造するときは、例えば、図５に示すように、上下で分離する上型４０及び下型４１により成形する。上型４０はリップ２０の内側面及びリップ２０の端面を成形し、下型４１はリップ２０の外側面を含む笠型弁体Ｖの外側を成形する。この場合、上側に拡開する笠状のリップ２０の内側面を上型４０で成形するので、離型の際、上型４０が容易に外れ、成形が容易になる。この離型の際、上型４０と下型４１の分離線がリップ２０の先端周縁２２に生じ、そのため、この先端周縁２２にバリが生じることがあるが、シール部２３は、その基端部２０ａと先端部２０ｂとの間の外周上に形成され、この部分にはバリが生じることがなく、そのため、シール部２３のシール性を損なうことが防止される。尚、笠型弁体Ｖの成形後は、バリなどを除く仕上げ処理を行なうことが一般的である。
【００１８】
次に、実施の形態に係る笠型弁体Ｖを上記の定量バルブＴに用いた場合の作用について説明する。図６に示すように、定量バルブＴにおいては、シリンダ１の供給口２から潤滑油が供給されると、供給される潤滑油の圧力によって笠型弁体Ｖが上側へ移動し、吐出口４へ連通したパイプ６の入り口６ａを上側シール面１２で閉塞すると共に、リップ２０が内側へ縮径して潤滑油を通過させる。通過した潤滑油は、パイプ６の外側に摺動可能に嵌合され且つシリンダ１の内壁に摺接するＯリングを含み常時供給口２側にスプリング８で付勢されるピストン９をこのスプリング８の付勢力に抗して押圧し、この圧力により形成される供給側シリンダ室１５に充填されていく。また、このピストン９の押圧により、吐出側シリンダ室１６に充填された潤滑油が、パイプ６と吐出側シリンダ室１６とに連通する貫通孔１７から押し出されて吐出口４から吐出していく。その後、ピストン９の吐出口４側の端面が、シリンダ１内の停止段部１８に当接して停止すると吐出が終了し、これによりピストン９のストローク分の潤滑油が吐出される。
【００１９】
この場合、ガイドロッド２１に設けられる凸条２４が供給口２の内壁に摺接するので笠型弁体Ｖが傾くことなく動くことができる。そのため、笠型弁体Ｖがシリンダ１内で傾く事態が防止され、そのため、パイプ６の入り口６ａを上側シール面１２で閉塞するが、上側シール面１２がパイプ６に均等に当接することから、シールが確実に行なわれる。
【００２０】
そして、図７に示すように、供給口２からの潤滑油の供給が停止して油圧が無くなると、スプリング８の付勢力によりピストン９が供給口２側に押圧され、パイプ６の供給口２側に設けた段状のストッパ１９に当接する。この際、ピストン９の押圧により供給側シリンダ室１５に充填された潤滑油に圧力が作用し、笠型弁体Ｖが供給口２側に移動し、供給口２の段部２ａを下側シール面１２で閉塞し、更に、リップ２０が拡開しシール部２３がシリンダ１の内壁に弾接してシールして、潤滑油の供給口２側への流出を抑止している。そして、供給側シリンダ室１５に充填された潤滑油がパイプ６の入り口６ａから流入し、ピストン９の移動により吐出側シリンダ室１６が負圧になることから、貫通孔１７から吐出側シリンダ室１６に潤滑油が流入し、次の吐出分の潤滑油として貯留される。
【００２１】
この場合、リップ２０のシール部２３がシリンダ１の内壁に弾接するが、従来のように、リップ２０の先端周縁２２によってシールした場合と比較して、シール部２３には型の分離線が作用しないのでバリが生じることがなく、そのため、バリによりシール性を損なう事態が防止され、確実に吐出側シリンダ室１６に潤滑油を貯留することができる。
即ち、笠型弁体Ｖの成形後は、バリなどを除く仕上げ処理を行なうことが一般的であるが、それでも僅かにでもリップ２０の先端周縁２２に、バリが残っていたとしても、シールはシール部２３で行なうので、このバリが影響する事態が防止されるのである。また、シール部２３の先端が断面山形に形成されているので、頂部が弾接し、それだけ、シールが確実になる。
【００２２】
このように、図６及び図７に示した動作が反復されて、定量の潤滑油が吐出口４から吐出される。この場合、実施の形態に係る笠型弁体Ｖによれば、上側シール面１２は、本体１０の上面３０で形成したので、本体１０は従来の柱状体１３（図８）に比較して大きいことからそれだけ姿勢が安定しており、また、シール面も大きくなることから、パイプ６から相対的に受ける力を確実に受けることができ、そのため、倒れやすくなったり、座屈しやすくなったり、部分的に崩れてしまったりする等の事態がほとんどなくなり、耐久性が大幅に向上させられる。その結果、上側シール面１２の形成部の耐久性がより一層向上させられているので、長年の使用によっても、上側シール面１２によるシールが安定化され、シール不良が生じる事態が防止される。
【００２３】
また、ガイドロッド２１に設けられる凸条２４により笠型弁体Ｖがシリンダ１内で傾く事態が防止され、そのため、上側シール面１２がパイプ６に均等に当接することから、この点でも、倒れやすくなったり、座屈しやすくなったり、部分的に崩れてしまったりする事態がほとんどなくなり、耐久性が大幅に向上させられる。
【００２４】
【発明の効果】
以上説明したように、本発明の笠型弁体によれば、上側シール面を本体の上面で形成したので、本体は従来の柱状体に比較して大きいことからそれだけ姿勢が安定しており、また、シール面も大きくなることから、パイプから相対的に受ける力を確実に受けることができ、そのため、倒れやすくなったり、座屈しやすくなったり、部分的に崩れてしまったりする等の事態がほとんどなくなり、耐久性が大幅に向上する。その結果、長年の使用によっても、上側シール面によるシールを安定化させることができ、シール不良が生じる事態を確実に防止することができる。
【００２５】
また、ガイドロッドの外側に供給口の内面に摺接する複数の凸条を設けた場合には、凸条により笠型弁体がシリンダ内で傾く事態を防止することができ、上側シール面をパイプに均等に当接させることができることから、この点でも、倒れやすくなったり、座屈しやすくなったり、部分的に崩れてしまったりする等の事態がほとんどなくなり、耐久性が大幅に向上する。その結果、長年の使用によっても、上側シール面によるシールを安定化させることができ、シール不良が生じる事態を確実に防止することができる。
【００２６】
更に、リップの基端部と先端部との間の外周上にシリンダに弾接してシールを行なうシール部を形成した場合には、シール部には型の分離線を作用させないようにしてバリが生じる事態を防止することができ、そのため、バリによりシール性を損なう事態を防止することができる。
この場合、シール部の先端を断面山形に形成した場合には、頂部が弾接するのでシールが確実になる。
【図面の簡単な説明】
【図１】本発明の実施の形態に係る笠型弁体を示す拡大断面図である。
【図２】本発明の実施の形態に係る笠型弁体を示す上側からの斜視図である。
【図３】本発明の実施の形態に係る笠型弁体を示す下側からの斜視図である。
【図４】本発明の実施の形態に係る笠型弁体を示す底面図である。
【図５】本発明の実施の形態に係る笠型弁体をこれを成形する型とともに示す断面図である。
【図６】本発明の実施の形態に係る笠型弁体が用いられる定量バルブの動作状態を示す断面図である。
【図７】本発明の実施の形態に係る笠型弁体が用いられる定量バルブの動作状態を示す断面図である。
【図８】従来の笠型弁体の一例を示す断面図である。
【図９】従来の笠型弁体が用いられる定量バルブの一例を動作状態で示す断面図である。
【図１０】従来の笠型弁体が用いられる定量バルブの一例を動作状態で示す断面図である。
【符号の説明】
Ｖ　笠型弁体
Ｔ　定量バルブ
１　シリンダ
２　供給口
４　吐出口
６　パイプ
６ａ　入り口
８　スプリング
９　ピストン
１０　本体
１０ａ　上側縁
１１　下側シール面
１２　上側シール面
１５　供給側シリンダ
１６　吐出側シリンダ
１７　貫通孔
２０　リップ
２０ａ　基端部
２０ｂ　先端部
２１　ガイドロッド
２２　先端周縁
２３　シール部
２４　凸条
３０　上面
４０　上型
４１　下型[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a cap-shaped valve element provided in a cylinder through which lubricating oil such as oil and grease flows, and having a cap-shaped lip.
[0002]
[Prior art]
Generally, a cap-shaped valve element is used for a metering valve for discharging a lubricating oil such as oil or grease, for example, one disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. Hei 7-174251) is known. .
As shown in FIGS. 8 to 10, the cap-type valve element is formed integrally with rubber, has a lubricating oil supply port 2, and has a pipe 6 through which lubricating oil flows. It is provided in a space between the lubricating oil supply port 2 and the pipe 6 within the cylinder 1.
[0003]
The cap-shaped valve body V has a substantially cylindrical main body 10 having a lower sealing surface 11 that closes to the supply port 2 side of the cylinder 1 when lubricating oil is not supplied. An upper sealing surface 12 that sometimes closes the inlet 6a of the pipe 6 is provided. The upper seal surface 12 is integrally formed on the upper side of the main body 10 and is formed on the upper surface of a columnar body 13 having a smaller radius than the main body 10. On the upper edge 10a of the main body 10, there is provided a cap-shaped lip 20 which expands upward from the upper edge 10a and the outer peripheral edge 22 of which is in elastic contact with the inner wall of the cylinder 1. Is provided with a guide rod 21 extending downward from the lower seal surface 11 and having a substantially cylindrical shape and provided coaxially with the supply port 2.
[0004]
As shown in FIG. 9, in the metering valve T using the cap-shaped valve element V, when lubricating oil is supplied from the supply port 2 of the cylinder 1, the pressure of the supplied lubricating oil causes the cap-shaped valve element V Moves upward to close the inlet 6a of the pipe 6 communicating with the discharge port 4 with the upper sealing surface 12, and the lip 20 is reduced in diameter to allow the lubricating oil to pass therethrough. The passed lubricating oil includes a piston 9 including an O-ring slidably fitted to the outside of the pipe 6 and slidably in contact with the inner wall of the cylinder 1 and constantly urged by the spring 8 toward the supply port 2. It is pressed against the urging force, and the supply-side cylinder chamber 15 formed by this pressing is filled. Further, by the pressing of the piston 9, the lubricating oil filled in the discharge-side cylinder chamber 16 is pushed out from the through hole 17 communicating with the pipe 6 and the discharge-side cylinder chamber 16, and is discharged from the discharge port 4. Thereafter, when the end surface of the piston 9 on the discharge port 4 side comes into contact with the stop step portion 18 in the cylinder 1 and stops, the discharge is terminated, and the lubricating oil corresponding to the stroke of the piston 9 is discharged.
[0005]
Then, as shown in FIG. 10, when the supply of the lubricating oil from the supply port 2 is stopped and the oil pressure is lost, the piston 9 is pressed toward the supply port 2 by the urging force of the spring 8, and the supply port 2 of the pipe 6 is Abuts against a step-like stopper 19 provided on the side. At this time, pressure acts on the lubricating oil filled in the supply-side cylinder chamber 15 by the pressing of the piston 9, the cap-shaped valve body V moves to the supply port 2 side, and the step portion 2 a of the supply port 2 is sealed with the lower seal. The lip 20 is closed, and the lip 20 expands, and the peripheral edge 22 of the lip resiliently contacts the inner wall of the cylinder 1 to seal it, thereby preventing the lubricating oil from flowing out to the supply port 2 side. Then, the lubricating oil filled in the supply side cylinder chamber 15 flows from the inlet 6a of the pipe 6, and the discharge side cylinder chamber 16 becomes negative pressure due to the movement of the piston 9, so that the discharge side cylinder chamber 16 Lubricating oil flows in and is stored as lubricating oil for the next discharge. Such an operation is repeated, and a fixed amount of lubricating oil is discharged from the discharge port 4.
[0006]
[Patent Document 1]
JP-A-7-174248
[Problems to be solved by the invention]
By the way, in such a cap-shaped valve element V, when lubricating oil is supplied from the supply port 2 of the cylinder 1 as shown in FIG. Moves upward, and the inlet 6a of the pipe 6 communicating with the pipe 6 is closed by the upper sealing surface 12. The columnar body 13 having the upper sealing surface 12 is integrally formed on the upper side of the main body 10, and Since it is formed in a columnar shape with a smaller radius than that, the columnar body 13 is likely to fall down, easily buckle, or partially collapse due to long-term use. If it occurs, the sealing by the upper sealing surface 12 may become unstable, resulting in poor sealing. Therefore, there is a demand to further improve the durability of the cap-shaped valve body V.
[0008]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been improved in durability so that the sealing of the upper seal surface can be further stabilized even after many years of use. It is intended to provide a valve body.
[0009]
[Means for Solving the Problems]
The cap-shaped valve body of the present invention for achieving such an object is provided in a cylinder having a lubricating oil supply port and a pipe having a lubricating oil flowing therein. A substantially cylindrical main body having a lower seal surface that closes the supply port side of the cylinder is provided, and an upper seal surface that closes an inlet of the pipe when lubricating oil is supplied is provided on an upper side of the main body. In a cap-shaped valve element, which is formed so as to expand upward from the upper edge and form a cap-shaped lip whose outer side elastically contacts the inner wall of the cylinder, the upper seal surface is formed on the upper surface of the main body.
[0010]
As a result, the operation of closing the inlet of the pipe when the lubricating oil is supplied and separating from the pipe when the lubricating oil is not supplied is repeated, but the upper sealing surface is formed on the upper surface of the main body. Is larger than conventional pillars, so the posture is more stable, and the sealing surface is larger, so it can reliably receive the force relatively received from the pipe, so it is easy to fall down This almost eliminates situations such as buckling, buckling, and partial collapse, and the durability is greatly improved. As a result, the durability of the formation portion of the upper seal surface is further improved, so that the seal by the upper seal surface is stabilized even after many years of use, and the occurrence of poor sealing is prevented.
[0011]
And, if necessary, a plurality of guide rods which are guided by the supply port on the lower side of the main body and are coaxial with the main body are protruded, and a plurality of axially extending slidingly contact the inner surface of the supply port outside the guide rod. The configuration is such that a ridge is provided. This prevents the cap-shaped valve body from tilting in the cylinder due to the ridge provided on the guide rod, so that the upper sealing surface abuts the pipe evenly. There are almost no situations such as easy bending and partial collapse, and the durability is greatly improved.
[0012]
Further, if necessary, a seal portion is formed on the outer periphery between the base end portion and the tip end portion of the lip so as to elastically contact the cylinder to perform sealing. Thereby, in the case where the molding die of the cap-shaped valve element is separated at the outer periphery of the tip of the lip, since the separation line of the die does not act on the seal portion, it is possible to prevent a situation in which burrs are generated on the seal portion. It is possible to prevent a situation in which the sealing property is impaired by burrs.
In this case, if the tip of the seal portion is formed to have a mountain shape in cross section, the top portion elastically contacts, so that the seal is ensured.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, based on the accompanying drawings, a cap-shaped valve element according to an embodiment of the present invention will be described in detail. The same components as those described above will be described with the same reference numerals.
1 to 4 show a cap-shaped valve element V according to an embodiment of the present invention. This cap-shaped valve body V is integrally formed of an appropriate material such as rubber, and is used for the same metering valve T as described above.
[0014]
The cap-shaped valve body V has a supply port 2 for lubricating oil such as oil or grease, and is provided in a cylinder 1 of a metering valve T provided with a pipe 6 through which lubricating oil flows. And in the space between the pipe 6. The cap-shaped valve body V includes a substantially cylindrical main body 10 having a lower sealing surface 11 that closes the supply port 2 side of the cylinder 1 when lubricating oil is not supplied. An upper sealing surface 12 that sometimes closes the inlet 6a of the pipe 6 is provided. In the embodiment, the upper seal surface 12 is formed by the upper surface 30 of the main body 10.
[0015]
The upper edge 10a of the main body 10 is provided with a cap-shaped lip 20 that expands upward from the upper edge 10a and has the outer side elastically contacting the inner wall of the cylinder 1. In the embodiment, a seal portion 23 is formed on the outer periphery between the base end portion 20a (upper edge 10a of the main body) of the lip 20 and the tip end portion 20b (22) to resiliently contact the cylinder 1 for sealing. I have. The tip of the seal portion 23 is formed to have a mountain cross section, and the top of the mountain contacts the cylinder 1 surface. The outer peripheral edge 22 also elastically contacts the inner wall of the cylinder 1.
[0016]
Further, a guide rod 21 extending downward from the lower seal surface 11 and provided substantially coaxially with the supply port 2 is provided on the lower side of the main body 10. On the outer side of the guide rod 21, a plurality of ridges 24 are formed integrally and extend in the axial direction in sliding contact with the inner surface of the supply port 2. Three ridges 24 are provided on the guide rod 21 in an equiangular relationship (every 120 °). The lower portion of the guide rod 21 is formed to have a tapered tip.
[0017]
When manufacturing the cap-shaped valve element V according to this embodiment, for example, as shown in FIG. 5, it is molded by an upper mold 40 and a lower mold 41 which are separated vertically. The upper mold 40 molds the inner surface of the lip 20 and the end surface of the lip 20, and the lower mold 41 molds the outside of the cap-shaped valve body V including the outer surface of the lip 20. In this case, since the inner side surface of the cap-shaped lip 20 that expands upward is formed by the upper mold 40, the upper mold 40 is easily detached at the time of release, and molding is facilitated. At the time of this release, a separation line between the upper mold 40 and the lower mold 41 is formed on the peripheral edge 22 of the distal end of the lip 20. As a result, burrs may be generated on the peripheral edge 22 of the lip 20. It is formed on the outer periphery between the tip 20a and the tip 20b, and burrs do not occur in this portion, so that the sealing performance of the seal portion 23 is prevented from being impaired. After the shaping valve body V is formed, it is general to perform a finishing process to remove burrs and the like.
[0018]
Next, the operation when the cap-shaped valve element V according to the embodiment is used for the above-described quantitative valve T will be described. As shown in FIG. 6, in the fixed quantity valve T, when lubricating oil is supplied from the supply port 2 of the cylinder 1, the cap-shaped valve body V moves upward due to the pressure of the supplied lubricating oil, and the discharge port 4 The inlet 6a of the pipe 6 communicating with the tub 20 is closed by the upper sealing surface 12, and the lip 20 is reduced in diameter to allow lubricating oil to pass therethrough. The passed lubricating oil includes a piston 9 including an O-ring slidably fitted to the outside of the pipe 6 and slidably in contact with the inner wall of the cylinder 1 and constantly urged by the spring 8 toward the supply port 2. It presses against the urging force, and the supply-side cylinder chamber 15 formed by this pressure is filled. Further, by the pressing of the piston 9, the lubricating oil filled in the discharge-side cylinder chamber 16 is pushed out from the through hole 17 communicating with the pipe 6 and the discharge-side cylinder chamber 16, and is discharged from the discharge port 4. Thereafter, when the end surface of the piston 9 on the discharge port 4 side comes into contact with the stop step portion 18 in the cylinder 1 and stops, the discharge is terminated, and the lubricating oil corresponding to the stroke of the piston 9 is discharged.
[0019]
In this case, since the ridge 24 provided on the guide rod 21 is in sliding contact with the inner wall of the supply port 2, the cap-shaped valve body V can move without tilting. Therefore, the situation where the cap-shaped valve element V is tilted in the cylinder 1 is prevented, so that the inlet 6a of the pipe 6 is closed by the upper sealing surface 12, but the upper sealing surface 12 abuts on the pipe 6 evenly. Sealing is ensured.
[0020]
Then, as shown in FIG. 7, when the supply of the lubricating oil from the supply port 2 is stopped and the oil pressure is lost, the piston 9 is pressed toward the supply port 2 by the urging force of the spring 8, and the supply port 2 of the pipe 6 is Abuts against a step-like stopper 19 provided on the side. At this time, pressure acts on the lubricating oil filled in the supply-side cylinder chamber 15 by the pressing of the piston 9, the cap-shaped valve body V moves to the supply port 2 side, and the step portion 2 a of the supply port 2 is sealed with the lower seal. The seal is closed at the surface 12, the lip 20 is further expanded, and the seal portion 23 elastically contacts and seals the inner wall of the cylinder 1 to prevent the lubricating oil from flowing out to the supply port 2 side. Then, the lubricating oil filled in the supply side cylinder chamber 15 flows from the inlet 6a of the pipe 6, and the discharge side cylinder chamber 16 becomes negative pressure due to the movement of the piston 9, so that the discharge side cylinder chamber 16 Lubricating oil flows in and is stored as lubricating oil for the next discharge.
[0021]
In this case, the sealing portion 23 of the lip 20 resiliently contacts the inner wall of the cylinder 1. However, as compared with the conventional case where the lip 20 is sealed by the peripheral edge 22 of the lip 20, the mold separation line acts on the sealing portion 23. As a result, no burrs are generated, and therefore, a situation in which the sealing property is impaired by the burrs is prevented, and the lubricating oil can be reliably stored in the discharge-side cylinder chamber 16.
That is, after the shaping valve body V is formed, it is general to perform a finishing process for removing burrs and the like. However, even if burrs still remain on the tip peripheral edge 22 of the lip 20 even slightly, the seal is Since the operation is performed by the seal portion 23, the situation in which the burr is affected is prevented. Further, since the tip of the seal portion 23 is formed to have a mountain-shaped cross section, the top portion elastically contacts, and the seal is assured accordingly.
[0022]
Thus, the operation shown in FIGS. 6 and 7 is repeated, and a fixed amount of lubricating oil is discharged from the discharge port 4. In this case, according to the cap-shaped valve element V according to the embodiment, since the upper sealing surface 12 is formed by the upper surface 30 of the main body 10, the main body 10 is larger than the conventional columnar body 13 (FIG. 8). Therefore, the posture is stable, and the sealing surface is also large, so that the force relatively received from the pipe 6 can be reliably received, and therefore, it is easy to fall down or buckle, There is almost no situation such as collapse of the structure, and the durability is greatly improved. As a result, the durability of the formation portion of the upper seal surface 12 is further improved, so that the seal by the upper seal surface 12 is stabilized even after many years of use, and the occurrence of poor sealing is prevented.
[0023]
In addition, the ridge 24 provided on the guide rod 21 prevents the cap-shaped valve body V from inclining in the cylinder 1, so that the upper sealing surface 12 abuts the pipe 6 evenly. It is hardly liable to be buckled or partially collapsed, and the durability is greatly improved.
[0024]
【The invention's effect】
As described above, according to the cap-type valve body of the present invention, since the upper seal surface is formed on the upper surface of the main body, the main body is larger than the conventional columnar body, so that the posture is more stable, Also, since the sealing surface is large, it can reliably receive the force relatively received from the pipe, which may cause it to easily fall down, buckle, or partially collapse. Almost disappears and durability is greatly improved. As a result, even when used for many years, the sealing by the upper sealing surface can be stabilized, and the occurrence of poor sealing can be reliably prevented.
[0025]
Further, when a plurality of ridges are provided on the outside of the guide rod so as to be in sliding contact with the inner surface of the supply port, the ridges can prevent the cap-shaped valve body from tilting in the cylinder, and the upper seal surface can be provided with a pipe. In this regard, even in this respect, there are almost no situations such as easy falling down, easy buckling, and partial collapse, and the durability is greatly improved. As a result, even when used for many years, the sealing by the upper sealing surface can be stabilized, and the occurrence of poor sealing can be reliably prevented.
[0026]
Further, when a seal portion is formed on the outer periphery between the base end portion and the tip end portion of the lip so as to resiliently contact the cylinder to perform sealing, a burr is formed so that the mold separation line is not applied to the seal portion. A situation that occurs can be prevented, and therefore, a situation in which sealing properties are impaired by burrs can be prevented.
In this case, when the tip of the seal portion is formed to have a mountain-shaped cross section, the top portion is elastically contacted, so that the seal is ensured.
[Brief description of the drawings]
FIG. 1 is an enlarged sectional view showing a cap-shaped valve element according to an embodiment of the present invention.
FIG. 2 is a perspective view from above showing a cap-shaped valve element according to the embodiment of the present invention.
FIG. 3 is a perspective view from below showing a cap-shaped valve element according to the embodiment of the present invention.
FIG. 4 is a bottom view showing the cap-shaped valve element according to the embodiment of the present invention.
FIG. 5 is a cross-sectional view showing a hat-shaped valve element according to an embodiment of the present invention together with a mold for molding the same.
FIG. 6 is a cross-sectional view showing an operation state of a metering valve using the cap-shaped valve element according to the embodiment of the present invention.
FIG. 7 is a cross-sectional view showing an operation state of a metering valve using the cap-shaped valve element according to the embodiment of the present invention.
FIG. 8 is a cross-sectional view showing an example of a conventional cap-type valve element.
FIG. 9 is a cross-sectional view showing an example of a metering valve using a conventional cap-type valve element in an operating state.
FIG. 10 is a cross-sectional view showing an example of a metering valve using a conventional cap-type valve in an operating state.
[Explanation of symbols]
V Cap-type valve body T Metering valve 1 Cylinder 2 Supply port 4 Discharge port 6 Pipe 6a Inlet 8 Spring 9 Piston 10 Main body 10a Upper edge 11 Lower seal surface 12 Upper seal surface 15 Supply cylinder 16 Discharge cylinder 17 Through hole 20 Lip 20a Base end 20b Tip 21 Guide rod 22 Tip periphery 23 Seal 24 Convex ridge 30 Upper surface 40 Upper die 41 Lower die

Claims (4)

潤滑油の供給口を有し内部に潤滑油が流通するパイプを備えたシリンダ内に設けられ、潤滑油の非供給時に上記シリンダの供給口側を閉じる下側シール面を有した略円柱状の本体を備え、該本体の上側に潤滑油の供給時に上記パイプの入り口を閉じる上側シール面を設け、上記本体の上側縁に該上側縁から上側に拡開し外側がシリンダの内壁に弾接する笠状のリップを形成してなる笠型弁体において、
上記上側シール面を上記本体の上面で形成したことを特徴とする笠型弁体。A substantially cylindrical cylinder having a lubricating oil supply port and provided in a cylinder provided with a pipe through which lubricating oil flows, and having a lower sealing surface that closes the supply port side of the cylinder when lubricating oil is not supplied. A cap having a main body, an upper sealing surface for closing an inlet of the pipe when lubricating oil is supplied on the upper side of the main body, and an upper edge of the main body which expands upward from the upper edge and an outer side elastically contacts the inner wall of the cylinder; In a cap-shaped valve body that forms a lip shape,
A cap-shaped valve body, wherein the upper sealing surface is formed on an upper surface of the main body. 上記本体の下側に上記供給口にガイドされ該本体と同軸のガイドロッドを突設し、該ガイドロッドの外側に上記供給口の内面に摺接し軸方向に延びる複数の凸条を設けたことを特徴とする請求項１記載の笠型弁体。A guide rod which is guided by the supply port and is coaxial with the main body is protruded below the main body, and a plurality of ridges extending in the axial direction in sliding contact with the inner surface of the supply port are provided outside the guide rod. The shade-shaped valve body according to claim 1, characterized in that: 上記リップの基端部と先端部との間の外周上にシリンダに弾接してシールを行なうシール部を形成したことを特徴とする請求項１または２記載の笠型弁体。3. The cap-type valve element according to claim 1, wherein a seal portion is formed on an outer periphery between a base end portion and a distal end portion of the lip so as to resiliently contact a cylinder to perform sealing. 上記シール部の先端を断面山形に形成したことを特徴とする請求項３記載の笠型弁体。4. A cap-shaped valve element according to claim 3, wherein a tip of said seal portion is formed in a mountain shape in cross section.
JP2002310384A 2002-10-25 2002-10-25 Shade type disc Expired - Fee Related JP4160359B2 (en)

Priority Applications (3)

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JP2002310384A JP4160359B2 (en) 2002-10-25 2002-10-25 Shade type disc
CNB2003101043523A CN100366968C (en) 2002-10-25 2003-10-24 Bamboo hat-type valve body
KR1020030074491A KR101006629B1 (en) 2002-10-25 2003-10-24 Cone-shaped valve member

Applications Claiming Priority (1)

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JP2002310384A JP4160359B2 (en) 2002-10-25 2002-10-25 Shade type disc

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JP4160359B2 JP4160359B2 (en) 2008-10-01

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KR (1) KR101006629B1 (en)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010209959A (en) * 2009-03-09 2010-09-24 Hitachi Metals Techno Ltd Hydraulic valve for hydraulic damper, and hydraulic damper

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60122073U (en) * 1984-01-26 1985-08-17 太平洋工業株式会社 non-return valve
CN2128328Y (en) * 1992-06-18 1993-03-17 李强 Semiautomatic constant-weight water supply valve and manual valve
JPH07174248A (en) * 1993-12-22 1995-07-11 Riyuube Kk Mushroom type valve
JPH07174251A (en) * 1993-12-22 1995-07-11 Riyuube Kk Constant flow rate valve
JPH08189576A (en) * 1995-01-06 1996-07-23 Toyota Motor Corp Check valve
JP2001330164A (en) * 2000-05-22 2001-11-30 Mikuni Adec Corp Two-way valve
JP4120160B2 (en) * 2000-12-01 2008-07-16 豊田合成株式会社 Fuel shut-off valve
JP2002235863A (en) * 2001-02-07 2002-08-23 Nok Corp Liquid shutoff valve device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010209959A (en) * 2009-03-09 2010-09-24 Hitachi Metals Techno Ltd Hydraulic valve for hydraulic damper, and hydraulic damper

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KR20040036646A (en) 2004-04-30
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JP4160359B2 (en) 2008-10-01
CN100366968C (en) 2008-02-06

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