JP2020115032A - Valve device - Google Patents

Valve device Download PDF

Info

Publication number
JP2020115032A
JP2020115032A JP2019006742A JP2019006742A JP2020115032A JP 2020115032 A JP2020115032 A JP 2020115032A JP 2019006742 A JP2019006742 A JP 2019006742A JP 2019006742 A JP2019006742 A JP 2019006742A JP 2020115032 A JP2020115032 A JP 2020115032A
Authority
JP
Japan
Prior art keywords
opening
valve device
lip
central axis
valve
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.)
Granted
Application number
JP2019006742A
Other languages
Japanese (ja)
Other versions
JP7127552B2 (en
Inventor
岳大 菅原
Takehiro Sugawara
岳大 菅原
勇一朗 守谷
Yuichiro Moriya
勇一朗 守谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Denso Corp filed Critical Denso Corp
Priority to JP2019006742A priority Critical patent/JP7127552B2/en
Priority to DE102019134841.2A priority patent/DE102019134841A1/en
Publication of JP2020115032A publication Critical patent/JP2020115032A/en
Application granted granted Critical
Publication of JP7127552B2 publication Critical patent/JP7127552B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F16K1/16—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 with pivoted closure-members
    • F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2042—Special features or arrangements of the sealing
    • F16K1/2057—Special features or arrangements of the sealing the sealing being arranged on the valve seat
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/0457—Packings
    • F16K5/0471—Packings between housing and plug
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/18—Special arrangements for separating the sealing faces or for pressing them together for plugs with cylindrical surfaces
    • F16K5/181—Special arrangements for separating the sealing faces or for pressing them together for plugs with cylindrical surfaces with the housing or parts of the housing mechanically pressing the seals against the plugs

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)
  • Gasket Seals (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

To suppress deformation in a trunk part.SOLUTION: A valve device 10 includes a valve body 200, a housing 100, a shaft 300, and a seal member 400 arranged at an opening 110 of the housing. The seal member includes: a flange part 401 fixed to the housing; a trunk part 405 having a first portion 410 and a second portion 420 protruding further into a first direction toward the shaft than the first portion; an outward lip part 415 connected to the first portion; and an inward lip part 425 connected to the second portion. The first portion protrudes further into the first direction as it goes farther away from the second portion, and the second portion protrudes further into the first direction as it goes farther away from the first portion. The first portion includes a first base part 411 connected to the flange part, and a first lip support part 412 which is positioned on the first direction side with respect to the first base part and whose thickness is smaller than that of the first base part, and the length along the central axis of the first base part becomes longer as it goes farther away from the second portion.SELECTED DRAWING: Figure 4

Description

本開示は、弁装置に関する。 The present disclosure relates to valve devices.

特許文献１には、回転軸に支持された弁体と、弁体を収容し開口を有するハウジングと、開口に設けられたシール部材と、を有する弁装置が開示されている。この弁装置では、シール部材は筒状の胴部及び胴部に接続されたリップを備えている。弁体は、回転してシール部材を押圧することによって、シール部材の備えるリップを折り曲げて、開口を密封する。このような弁装置は、例えば、燃料を燃焼することによって駆動力を発生するエンジンシステムに適用される。 Patent Document 1 discloses a valve device including a valve body supported by a rotating shaft, a housing that accommodates the valve body and has an opening, and a seal member provided in the opening. In this valve device, the sealing member has a tubular body and a lip connected to the body. The valve body rotates to press the seal member, thereby bending the lip of the seal member and sealing the opening. Such a valve device is applied to, for example, an engine system that generates a driving force by burning fuel.

特開２０１７−１５５８８５JP, 2017-155885, A

発明者らは、弁体が開口を密封する方向である閉方向に回転する際に、リップにかかる応力によっては、リップに接続された胴部が変形するおそれがあることを見出した。胴部の変形は、弁装置のシール性を低下させるおそれがある。 The inventors have found that, when the valve body rotates in the closing direction, which is a direction for sealing the opening, the body portion connected to the lip may be deformed due to the stress applied to the lip. Deformation of the body may reduce the sealing performance of the valve device.

本開示は、上述の課題を解決するためになされたものであり、以下の形態として実現することが可能である。 The present disclosure has been made to solve the above problems, and can be realized as the following modes.

本開示の一形態によれば、弁装置（１０、１０ａ、１０ｂ、１０ｃ）が提供される。弁装置は、弁体（２００）と、流体を受け入れる開口（１１０）を有し前記弁体を収容するハウジング（１００）と、前記ハウジング内で前記弁体を回転可能に支持するシャフト（３００）と、前記開口に配置されたシール部材（４００、４００ａ、４００ｂ、４００ｃ）と、を備え、前記弁体は、前記シャフトによって回転されることにより、前記開口を開ける開方向（ＯＤ）と、前記シール部材に押圧されて前記開口を閉じる閉方向（ＣＤ）と、に移動できるように構成されており、前記シール部材は、前記ハウジングに固定された環状のフランジ部（４０１）と、前記フランジ部に接続され、前記開口の内周において前記開口と所定の間隙を設けて配置され、中心軸（ＣＡ）が前記開口の中心を通る筒状の胴部（４０５、４０５ａ、４０５ｂ、４０５ｃ）であって、前記中心軸に沿った方向のうち前記シャフトに向かう方向を第１方向とした場合に、前記中心軸に対して開方向側に位置する第１部分（４１０）と、前記中心軸に対して閉方向側に位置し、前記第１部分よりも前記第１方向に突出している第２部分（４２０、４２０ａ、４２０ｂ、４２０ｃ）と、を有する、胴部（４０５、４０５ａ、４０５ｂ、４０５ｃ）と、前記第１部分に接続され、前記中心軸から離れる方向に突出する外向きリップ部（４１５）と、前記第２部分に接続され、前記中心軸に向けて突出し、前記外向きリップ部よりも前記シャフトに近い位置に配置される内向きリップ部（４２５）と、を有し、前記第１部分は、前記第２部分から遠い部分ほどより前記第１方向に突出しており、前記第２部分は、前記第１部分から遠い部分ほどより前記第１方向に突出しており、前記弁体は、前記外向きリップ部に押圧される第１押圧曲面（２１０）と、前記内向きリップ部に押圧される第２押圧曲面（２２０）と、を有し、前記第１部分は、前記フランジ部に接続された第１基部（４１１）と、前記第１基部に対して前記第１方向側に位置し、厚みが前記第１基部よりも小さい第１リップ支持部（４１２）と、を有しており、前記第１基部の前記中心軸に沿った長さは、前記第２部分から遠い部分ほどより長くなる。 According to one aspect of the present disclosure, a valve device (10, 10a, 10b, 10c) is provided. The valve device includes a valve body (200), a housing (100) having an opening (110) for receiving a fluid and containing the valve body, and a shaft (300) rotatably supporting the valve body in the housing. And a seal member (400, 400a, 400b, 400c) arranged in the opening, the valve body is rotated by the shaft to open the opening, and the opening direction (OD), The seal member is configured to be movable in a closing direction (CD) in which the opening is closed by being pressed by a seal member, and the seal member includes an annular flange portion (401) fixed to the housing, and the flange portion. Is a cylindrical body portion (405, 405a, 405b, 405c) that is connected to the inner circumference of the opening with a predetermined gap from the opening and has a central axis (CA) passing through the center of the opening. When the direction toward the shaft is the first direction out of the directions along the central axis, the first portion (410) located on the open direction side with respect to the central axis and the first portion (410) with respect to the central axis. Body portion (405, 405a, 405b, 405c) having a second portion (420, 420a, 420b, 420c) that is located closer to the closing direction and protrudes in the first direction than the first portion. An outwardly facing lip portion (415) connected to the first portion and protruding in a direction away from the central axis; and an outwardly facing lip portion (415) connected to the second portion and protruding toward the central axis. Also has an inwardly facing lip portion (425) arranged closer to the shaft, and the first portion projects in the first direction further from a portion farther from the second portion, The portion protrudes in the first direction from a portion farther from the first portion, and the valve body has a first pressing curved surface (210) pressed by the outward lip portion and an inward lip portion. A second pressing curved surface (220) to be pressed, wherein the first portion is a first base portion (411) connected to the flange portion, and a first base portion on the first direction side with respect to the first base portion. A first lip support portion (412) having a thickness smaller than that of the first base portion, and a length of the first base portion along the central axis is far from the second portion. The longer it gets.

この形態によれば、外向きリップ部が接続された第１部分において、フランジ部に接続された第１基部の厚みは、第１基部に対して第１方向に位置する第１リップ支持部の厚みよりも大きい。そのため、弁体が閉方向に移動した際に外向きリップ部にかかる力によって、胴部が変形することを抑制することができる。また、第１部分は、第２部分から遠い部分ほどフランジ部から第１方向に突出しており、第１基部の中心軸に沿った長さは、第２部分から遠い部分ほど長い。そのため、第１部分において、フランジ部からの距離が大きい部分の剛性を高めることができ、胴部が変形することを抑制することができる。したがって、弁装置におけるシール性を高めることができる。 According to this aspect, in the first portion to which the outward lip portion is connected, the thickness of the first base portion connected to the flange portion is equal to that of the first lip support portion located in the first direction with respect to the first base portion. Greater than thickness. Therefore, it is possible to prevent the body portion from being deformed by the force applied to the outward lip portion when the valve body moves in the closing direction. Further, the first portion protrudes in the first direction from the flange portion as the portion is farther from the second portion, and the length along the central axis of the first base portion is longer as the portion is farther from the second portion. Therefore, in the first portion, the rigidity of the portion where the distance from the flange portion is large can be increased, and the deformation of the body portion can be suppressed. Therefore, the sealing performance of the valve device can be improved.

本開示は、弁装置の他に、弁装置に用いられるシール部材の形態で実現することができる。 The present disclosure can be realized in the form of a seal member used in a valve device, in addition to the valve device.

弁体が開口を開いている状態を示す説明図。Explanatory drawing which shows the state which the valve body has opened the opening. 弁体が開口を閉じている状態を示す説明図。Explanatory drawing which shows the state which the valve body has closed the opening. シール部材の斜視図。The perspective view of a seal member. シール部材の４−４断面図。4-4 is a cross-sectional view of the seal member. 弁体の詳細な構造を説明する説明図。Explanatory drawing explaining the detailed structure of a valve body. 弁体がシール部材に接触した瞬間の状態を示す説明図。Explanatory drawing which shows the state at the moment when a valve body contacts a sealing member. 弁体がシール部材に接触した後の状態を示す説明図。Explanatory drawing which shows the state after a valve body contacts a sealing member. 弁体がシール部材に接触した後の状態を示す他の説明図。Another explanatory view showing a state after the valve element comes into contact with the seal member. 第２実施形態のシール部材を示す説明図。Explanatory drawing which shows the sealing member of 2nd Embodiment. 第３実施形態のシール部材を示す説明図。Explanatory drawing which shows the sealing member of 3rd Embodiment. 第３実施形態の他のシール部材を示す説明図。Explanatory drawing which shows the other sealing member of 3rd Embodiment.

Ａ．第１実施形態
図１に示す第１実施形態の弁装置１０は、弁体２００を回転することによって流体の通路の開度を増減可能なロータリー式の弁である。本実施形態の弁装置１０は、燃料を燃焼することによって駆動力を発生するエンジンシステムに適用される。本実施形態では、弁装置１０は、大気から空気を吸入する上流側吸気管２０と、燃焼室に吸入空気を導くための下流側吸気管３０と、燃焼室から廃棄された排気を下流側吸気管３０に戻すためのＥＧＲ管４０と、が接続されている箇所に設けられている。 A. First Embodiment A valve device 10 according to the first embodiment shown in FIG. 1 is a rotary valve that can increase or decrease the opening degree of a fluid passage by rotating a valve body 200. The valve device 10 of the present embodiment is applied to an engine system that generates a driving force by burning fuel. In the present embodiment, the valve device 10 includes an upstream intake pipe 20 that intakes air from the atmosphere, a downstream intake pipe 30 that guides intake air to the combustion chamber, and exhaust gas that is discarded from the combustion chamber that is exhausted downstream. The EGR pipe 40 for returning to the pipe 30 is provided at a place where it is connected.

弁装置１０は、ハウジング１００と、弁体２００と、シャフト３００と、シール部材４００と、を備える。 The valve device 10 includes a housing 100, a valve body 200, a shaft 300, and a seal member 400.

図１には、互いに直交する３つの空間軸として、Ｘ軸、Ｙ軸及びＺ軸が示されている。図１のＸＹＺ軸は、他の図におけるＸＹＺ軸に対応する。以降、Ｘ軸に沿った方向のうち、正方向を＋Ｘ方向とも呼び、負方向を−Ｘ方向とも呼ぶ。Ｙ軸に沿った方向のうち、正方向を＋Ｙ方向とも呼び、負方向を−Ｙ方向とも呼ぶ。Ｚ軸に沿った方向のうち、正方向を＋Ｚ方向とも呼び、負方向を−Ｚ方向とも呼ぶ。 In FIG. 1, an X axis, a Y axis, and a Z axis are shown as three spatial axes orthogonal to each other. The XYZ axes in FIG. 1 correspond to the XYZ axes in other figures. Hereinafter, of the directions along the X axis, the positive direction is also referred to as +X direction, and the negative direction is also referred to as −X direction. Of the directions along the Y-axis, the positive direction is also called +Y direction and the negative direction is also called -Y direction. Among the directions along the Z axis, the positive direction is also called +Z direction and the negative direction is also called −Z direction.

ハウジング１００は、流体を受け入れる開口１１０を有し、弁体２００を収容する。開口１１０は、ＥＧＲ管４０から流される排気をハウジング１００内に取り込むための開口である。 The housing 100 has an opening 110 for receiving a fluid and accommodates the valve body 200. The opening 110 is an opening for taking the exhaust gas flowing from the EGR pipe 40 into the housing 100.

弁体２００は、ハウジング１００内に回転可能に収容される。弁体２００は、ＸＺ平面に沿った断面が扇形形状であって、該扇形形状がＹ軸に沿って伸びた形状の弁体である。 The valve body 200 is rotatably accommodated in the housing 100. The valve body 200 is a valve body having a fan-shaped cross section along the XZ plane, and the fan-shaped cross section extending along the Y-axis.

シャフト３００は、弁体２００と一体化された軸である。シャフト３００の中心軸は、Ｙ軸と平行である。シャフト３００は、ハウジング１００内で弁体２００を回転可能に支持する。 The shaft 300 is an axis integrated with the valve body 200. The central axis of the shaft 300 is parallel to the Y axis. The shaft 300 rotatably supports the valve body 200 in the housing 100.

図１には、弁体２００が開口１１０を開いている状態が示されている。図２には、弁体２００が開口１１０を閉じている状態が示されている。弁体２００は、シャフト３００によって回転されることにより、開口１１０を開ける開方向ＯＤと、シール部材４００に押圧されて開口１１０を閉じる閉方向ＣＤと、に移動できるように構成されている。弁体２００が図１の状態から図２の状態に回転する方向が開方向ＯＤであり、弁体２００が図２の状態から図１の状態に回転する方向が閉方向ＣＤである。 FIG. 1 shows a state in which the valve body 200 opens the opening 110. FIG. 2 shows a state in which the valve body 200 closes the opening 110. The valve body 200 is configured to be able to move in an opening direction OD that opens the opening 110 and a closing direction CD that is pressed by the seal member 400 and closes the opening 110 by being rotated by the shaft 300. The direction in which the valve body 200 rotates from the state of FIG. 1 to the state of FIG. 2 is the opening direction OD, and the direction in which the valve body 200 rotates from the state of FIG. 2 to the state of FIG. 1 is the closing direction CD.

図３及び図４を用いて、シール部材４００について説明する。図３はシール部材４００の斜視図であり、図４は図３における４−４断面図である。シール部材４００は、開口１１０に配置される部材である。シール部材４００は、環状のフランジ部４０１と、筒状の胴部４０５と、外向きリップ部４１５と、内向きリップ部４２５とを有する。フランジ部４０１は、ハウジング１００の開口１１０に固定される。フランジ部４０１の底面は、−Ｚ方向を向いた、ＸＹ平面と平行な面である。本実施形態において、フランジ部４０１は、樹脂材料を含んで構成されている。他の形態において、フランジ部４０１は、金属により構成されていてもよい。 The seal member 400 will be described with reference to FIGS. 3 and 4. 3 is a perspective view of the seal member 400, and FIG. 4 is a sectional view taken along line 4-4 of FIG. The seal member 400 is a member arranged in the opening 110. The seal member 400 has an annular flange portion 401, a tubular body portion 405, an outward lip portion 415, and an inward lip portion 425. The flange portion 401 is fixed to the opening 110 of the housing 100. The bottom surface of the flange portion 401 is a surface facing the −Z direction and parallel to the XY plane. In the present embodiment, the flange portion 401 is configured to include a resin material. In another form, the flange portion 401 may be made of metal.

シール部材４００の胴部４０５は、開口１１０の内周において、開口１１０と所定の間隙を設けて配置される。胴部４０５の中心軸ＣＡは、開口１１０の中心を通る。胴部４０５の中心軸ＣＡに沿った方向のうち、シャフト３００に向かう方向を「第１方向」とも呼ぶ。第１方向は、＋Ｚ方向でもある。胴部４０５は、フランジ部４０１の内周から＋Ｚ方向に突出している。図４に示すように、本実施形態において、胴部４０５は、樹脂材料を含む躯体部４０２と、躯体部４０２を覆う表層部４０３と、から構成されている。表層部４０３は、樹脂材料よりも弾性係数の低い材料を含む。躯体部４０２は、樹脂材料として、例えば、ポリフェニレンサルファイド樹脂（ＰＰＳ）、ポリスチレン樹脂（ＰＳ）、ピーク樹脂（ＰＥＥＫ）、ポリブチレンテレフタレート樹脂（ＰＢＴ）、ポリアミド樹脂（ＰＡ）のうち、少なくとも一つを含んでもよい。表層部４０３は、ゴム材料を含んでもよい。表層部４０３は、ゴム材料として、フッ素ゴム（ＦＫＭ）、三元系フッ素ゴム、パーフロロポリエーテルゴム（ＦＯ）、エチレンフロピレンゴム（ＥＰＤＭ）、水素添加ニトリルゴム（ＨＮＢＲ）、ニトリルゴム（ＮＢＲ）のうち少なくとも１つを含んでもよい。本実施形態において、躯体部４０２は、フランジ部４０１と一体に成形されている。 The body portion 405 of the seal member 400 is arranged on the inner periphery of the opening 110 with a predetermined gap from the opening 110. The central axis CA of the body 405 passes through the center of the opening 110. Of the directions along the central axis CA of the body portion 405, the direction toward the shaft 300 is also referred to as “first direction”. The first direction is also the +Z direction. The body portion 405 projects in the +Z direction from the inner circumference of the flange portion 401. As shown in FIG. 4, in the present embodiment, the body portion 405 includes a body portion 402 containing a resin material, and a surface layer portion 403 covering the body portion 402. The surface layer portion 403 includes a material having a lower elastic coefficient than the resin material. The body part 402 is made of, for example, at least one of polyphenylene sulfide resin (PPS), polystyrene resin (PS), peak resin (PEEK), polybutylene terephthalate resin (PBT), and polyamide resin (PA) as a resin material. May be included. The surface layer portion 403 may include a rubber material. The surface layer portion 403 is made of a rubber material such as fluororubber (FKM), ternary fluororubber, perfluoropolyether rubber (FO), ethylene fluoropyrene rubber (EPDM), hydrogenated nitrile rubber (HNBR), nitrile rubber (NBR). At least one of the above) may be included. In the present embodiment, the skeleton part 402 is formed integrally with the flange part 401.

胴部４０５は、第１部分４１０と第２部分４２０とを備える。第１部分４１０は、胴部４０５のうち、中心軸ＣＡに対して開方向ＯＤ側に位置する部分である。第２部分４２０は、胴部４０５のうち、中心軸ＣＡに対して閉方向ＣＤ側に位置する部分である。 The body 405 includes a first portion 410 and a second portion 420. The first portion 410 is a portion of the body portion 405 located on the opening direction OD side with respect to the central axis CA. The second portion 420 is a portion of the body portion 405 located on the closing direction CD side with respect to the central axis CA.

第１部分４１０及び第２部分４２０は、＋Ｚ方向から見て、それぞれ略円弧状である。第１部分４１０と第２部分４２０との間には、第１受圧面４３０と、第２受圧面４４０とが設けられている。第１受圧面４３０は、第１部分４１０の一端と第２部分４２０の一端との間に位置する。ここでいう第１部分４１０の一端とは、第１部分４１０の端のうち＋Ｙ方向側の端のことである。同様に、第２部分４２０の一端とは、第２部分４２０の端のうち＋Ｙ方向側の端のことである。第２受圧面４４０は、第１部分４１０の他端と第２部分４２０の他端との間に位置する。ここでいう第１部分４１０の他端とは、第１部分４１０の端のうち−Ｙ方向側の端のことである。同様に、第２部分４２０の他端とは、第２部分４２０の端のうち−Ｙ方向側の端のことである。第１受圧面４３０及び第２受圧面４４０は、中心軸ＣＡが存在するＹＺ平面に平行な面である。第１受圧面４３０及び第２受圧面４４０は、胴部４０５において第１部分４１０と第２部分４２０とが切り替わる面でもある。第１受圧面４３０及び第２受圧面４４０を「切替面」と呼ぶこともできる。 The first portion 410 and the second portion 420 are substantially arcuate when viewed from the +Z direction. A first pressure receiving surface 430 and a second pressure receiving surface 440 are provided between the first portion 410 and the second portion 420. The first pressure receiving surface 430 is located between one end of the first portion 410 and one end of the second portion 420. Here, the one end of the first portion 410 is an end on the +Y direction side of the ends of the first portion 410. Similarly, the one end of the second portion 420 is the end on the +Y direction side of the ends of the second portion 420. The second pressure receiving surface 440 is located between the other end of the first portion 410 and the other end of the second portion 420. The other end of the first portion 410 here is an end on the −Y direction side of the ends of the first portion 410. Similarly, the other end of the second portion 420 is an end on the −Y direction side of the ends of the second portion 420. The first pressure receiving surface 430 and the second pressure receiving surface 440 are surfaces parallel to the YZ plane in which the central axis CA exists. The first pressure receiving surface 430 and the second pressure receiving surface 440 are also surfaces where the first portion 410 and the second portion 420 of the body portion 405 switch. The first pressure receiving surface 430 and the second pressure receiving surface 440 can also be called “switching surfaces”.

第１部分４１０は、中心軸ＣＡが存在するＹＺ平面から−Ｘ方向に離れるほど、＋Ｚ方向に突出している。言い換えると、第１部分４１０は、第２部分４２０から遠い部分ほど、より、＋Ｚ方向に突出している。第１部分４１０は、切替面から離れるにつれて＋Ｚ方向に突出しているということもできる。 The first portion 410 projects in the +Z direction as it moves away from the YZ plane in which the central axis CA exists in the −X direction. In other words, the first portion 410 projects further in the +Z direction as it goes farther from the second portion 420. It can also be said that the first portion 410 projects in the +Z direction as it moves away from the switching surface.

第２部分４２０は、中心軸ＣＡが存在するＹＺ平面から＋Ｘ方向に離れるほど、＋Ｚ方向に突出している。言い換えると、第２部分４２０は、第１部分４１０から遠い部分ほど、より、＋Ｚ方向に突出している。第２部分４２０は、切替面から遠い部分ほど＋Ｚ方向に突出しているということもできる。更に、第２部分４２０は、第１部分４１０よりも＋Ｚ方向に突出している。言い換えると、第２部分４２０のうち＋Ｚ方向に最も突出している部分は、第１部分４１０のうち＋Ｚ方向に最も突出している部分より、＋Ｚ方向側に位置している。 The second portion 420 projects in the +Z direction as it moves away from the YZ plane where the central axis CA exists in the +X direction. In other words, the second portion 420 projects further in the +Z direction as it goes away from the first portion 410. It can be said that the second portion 420 projects in the +Z direction as it goes farther from the switching surface. Further, the second portion 420 projects in the +Z direction more than the first portion 410. In other words, the portion of the second portion 420 that most projects in the +Z direction is located on the +Z direction side of the portion of the first portion 410 that most projects in the +Z direction.

第１部分４１０は、第１基部４１１と、第１リップ支持部４１２とを有する。第１基部４１１は、第１部分４１０のうちフランジ部４０１に接続された部位である。第１リップ支持部４１２は、第１基部４１１に対して＋Ｚ方向側に位置する部位である。図４に示すように、第１リップ支持部４１２の厚みＴ２は、第１基部４１１の厚みＴ１よりも小さい。また、第１基部４１１の中心軸ＣＡに沿った長さは、第２部分４２０から遠い部分ほどより長くなる。言い換えると、第１基部４１１の中心軸ＣＡに沿った長さは、中心軸ＣＡ及びＹ軸が位置するＹＺ平面から−Ｘ方向に離れるほど、より長くなる。第１基部４１１の中心軸ＣＡに沿った長さは、切替面から離れるにつれて、より長いということもできる。 The first portion 410 has a first base 411 and a first lip support 412. The first base portion 411 is a portion of the first portion 410 that is connected to the flange portion 401. The first lip support portion 412 is a portion located on the +Z direction side with respect to the first base portion 411. As shown in FIG. 4, the thickness T2 of the first lip support portion 412 is smaller than the thickness T1 of the first base portion 411. In addition, the length of the first base 411 along the central axis CA becomes longer as it goes away from the second portion 420. In other words, the length of the first base portion 411 along the central axis CA becomes longer as the distance from the YZ plane in which the central axis CA and the Y axis are located is in the −X direction. It can be said that the length of the first base 411 along the central axis CA is longer as the distance from the switching surface increases.

本実施形態では、図４に示すように、第１基部４１１の＋Ｚ方向における端部Ｓ１は、第１リップ支持部４１２の外周面Ｓ２と曲面で接続されている。他の実施形態では、第１基部４１１の＋Ｚ方向における端部Ｓ１と、第１リップ支持部４１２の外周面Ｓ２とのなす角は直角でもよい。 In the present embodiment, as shown in FIG. 4, the end S1 of the first base 411 in the +Z direction is connected to the outer peripheral surface S2 of the first lip support 412 by a curved surface. In another embodiment, the angle between the end S1 of the first base 411 in the +Z direction and the outer peripheral surface S2 of the first lip support 412 may be a right angle.

次に、外向きリップ部４１５及び内向きリップ部４２５について説明する。外向きリップ部４１５は、第１部分４１０に接続された部材である。外向きリップ部４１５は、中心軸ＣＡから離れる方向に突出する。 Next, the outward lip portion 415 and the inward lip portion 425 will be described. The outward lip portion 415 is a member connected to the first portion 410. The outward lip portion 415 projects in a direction away from the central axis CA.

内向きリップ部４２５は、第２部分４２０に接続された部材である。内向きリップ部４２５は、中心軸ＣＡに向けて突出し、外向きリップ部４１５よりもシャフト３００に近い位置に配置される。そのため、図１に示すように、弁体２００の軸中心から内向きリップ部４２５までの距離Ｌ２は、弁体２００の軸中心から外向きリップ部４１５までの距離Ｌ１より短い。 The inward lip portion 425 is a member connected to the second portion 420. The inward lip portion 425 projects toward the central axis CA and is arranged at a position closer to the shaft 300 than the outward lip portion 415. Therefore, as shown in FIG. 1, the distance L2 from the axial center of the valve body 200 to the inward lip portion 425 is shorter than the distance L1 from the axial center of the valve body 200 to the outward lip portion 415.

本実施形態において、外向きリップ部４１５及び内向きリップ部４２５は、胴部４０５の表層部４０３と同じ材料により構成されている。このようなシール部材４００は、シール部材４００の外形状に沿った成形型内に、フランジ部４０１と接続された躯体部４０２を挿入し、躯体部４０２の周囲に表層部４０３の材料を流し込むことによって製造することができる。 In the present embodiment, the outward lip portion 415 and the inward lip portion 425 are made of the same material as the surface layer portion 403 of the body portion 405. In such a seal member 400, the body portion 402 connected to the flange portion 401 is inserted into a mold along the outer shape of the seal member 400, and the material of the surface layer portion 403 is poured around the body portion 402. Can be manufactured by.

次に、開口１１０と、シール部材４００の位置関係について説明する。図４のＲ１、Ｒ２、Ｒ３、Ｇ１、Ｇ２、Ｇ３、Ｇ４は、ＸＹ平面に沿った距離であり、以下を示している。
Ｒ１：開口１１０の直径。
Ｒ２：胴部４０５の内径。
Ｒ３：外向きリップ部４１５の先端と４２０の外周面との距離。
Ｇ１：第１基部４１１と開口１１０との間隙。
Ｇ２：第１リップ支持部４１２と開口１１０との間隙。
Ｇ３：外向きリップ部４１５の先端と開口１１０との間隙。
Ｇ４：第２部分４２０と開口１１０との間隙。 Next, the positional relationship between the opening 110 and the seal member 400 will be described. R1, R2, R3, G1, G2, G3, and G4 in FIG. 4 are distances along the XY plane and show the following.
R1: Diameter of opening 110.
R2: inner diameter of the body portion 405.
R3: Distance between the tip of the outward lip 415 and the outer peripheral surface of 420.
G1: A gap between the first base 411 and the opening 110.
G2: A gap between the first lip support portion 412 and the opening 110.
G3: A gap between the tip of the outward lip 415 and the opening 110.
G4: A gap between the second portion 420 and the opening 110.

図４に示すように、シール部材４００では、外向きリップ部４１５の外縁は、開口１１０に対して中心軸ＣＡ側に位置している。言い換えると、シール部材４００では、距離Ｒ３が、開口１１０の直径Ｒ１よりも小さくなるように構成されている。このため、弁体２００が回転する際に、シール部材４００と接触しない。 As shown in FIG. 4, in the seal member 400, the outer edge of the outward lip portion 415 is located on the central axis CA side with respect to the opening 110. In other words, the seal member 400 is configured such that the distance R3 is smaller than the diameter R1 of the opening 110. Therefore, when the valve body 200 rotates, it does not come into contact with the seal member 400.

上述したように、第１基部４１１の厚みＴ１は、第１リップ支持部４１２の厚みＴ２よりも大きいため、第１基部４１１と開口１１０との間隙Ｇ１は、第１リップ支持部４１２と開口１１０との間隙Ｇ２よりも短い。また、本実施形態では、第１基部４１１と開口１１０までの間隙Ｇ１と、外向きリップ部４１５の先端と開口１１０との間隙Ｇ３とは略等しい。すなわち、シール部材４００のＸＺ断面で見ると、第１基部４１１の外周面は、外向きリップ部４１５の先端と、Ｘ軸における同じ位置に存在する。 As described above, since the thickness T1 of the first base portion 411 is larger than the thickness T2 of the first lip support portion 412, the gap G1 between the first base portion 411 and the opening 110 is the first lip support portion 412 and the opening 110. It is shorter than the gap G2. In the present embodiment, the gap G1 between the first base 411 and the opening 110 and the gap G3 between the tip of the outward lip 415 and the opening 110 are substantially equal. That is, when viewed in the XZ section of the seal member 400, the outer peripheral surface of the first base portion 411 exists at the same position on the X axis as the tip of the outward lip portion 415.

本実施形態において、胴部４０５の内径Ｒ２は一定である。他の実施形態では、胴部４０５の内径Ｒ２は一定でなくともよく、例えば、胴部４０５の内径は、−Ｚ方向に向けて次第に減少していてもよい。 In this embodiment, the inner diameter R2 of the body portion 405 is constant. In another embodiment, the inner diameter R2 of the body 405 may not be constant, and for example, the inner diameter of the body 405 may be gradually decreased in the −Z direction.

また、本実施形態では、第２部分４２０の厚みＴ３は、第１リップ支持部４１２の厚みＴ２と略等しい。本実施形態では、第２部分４２０と開口１１０との間隙Ｇ４は、第１リップ支持部４１２と開口１１０との間隙Ｇ２と略等しい。 Further, in the present embodiment, the thickness T3 of the second portion 420 is substantially equal to the thickness T2 of the first lip support portion 412. In the present embodiment, the gap G4 between the second portion 420 and the opening 110 is substantially equal to the gap G2 between the first lip support portion 412 and the opening 110.

図５を用いて、弁体２００の構造について説明する。弁体２００は、弁体２００の外周を向いた側に、楕円形状の面である楕円周面２０２を有する部材である。弁体２００は、第１押圧曲面２１０と、第２押圧曲面２２０と、第１押圧面２３０と、第２押圧面２４０と、を有する。 The structure of the valve body 200 will be described with reference to FIG. The valve body 200 is a member having an elliptical peripheral surface 202, which is an elliptical surface, on the side facing the outer periphery of the valve body 200. The valve body 200 has a first pressing curved surface 210, a second pressing curved surface 220, a first pressing surface 230, and a second pressing surface 240.

第１押圧曲面２１０は、楕円周面２０２のうち開方向ＯＤ側の端から弁体２００の外側に向けて伸びた曲面である。第１押圧曲面２１０は、外向きリップ部４１５と対応する略円弧形状を有し、外向きリップ部４１５に押圧される曲面である。 The first pressing curved surface 210 is a curved surface extending from the end on the opening direction OD side of the elliptical peripheral surface 202 toward the outside of the valve body 200. The first pressing curved surface 210 has a substantially arc shape corresponding to the outward lip portion 415 and is a curved surface that is pressed by the outward lip portion 415.

第２押圧曲面２２０は、楕円周面２０２のうち閉方向ＣＤ側の端から弁体２００の内側に向けて伸びた曲面である。第２押圧曲面２２０は、内向きリップ部４２５と対応する略円弧形状を有し、内向きリップ部４２５に押圧される曲面である。 The second pressing curved surface 220 is a curved surface extending from the end on the CD side in the closing direction of the elliptical peripheral surface 202 toward the inside of the valve body 200. The second pressing curved surface 220 has a substantially arc shape corresponding to the inward lip portion 425 and is a curved surface that is pressed by the inward lip portion 425.

第１押圧面２３０は、第１押圧曲面２１０の一端と第２押圧曲面２２０の一端との間に位置する。ここでいう第１押圧曲面２１０の一端とは、第１押圧曲面２１０の端のうち＋Ｙ方向側の端のことである。同様に、第２押圧曲面２２０の一端とは、第２押圧曲面２２０の端のうち＋Ｙ方向側の端のことである。第１押圧面２３０は、閉方向ＣＤを向いた面であって、第１受圧面４３０と対応する形状を有する面である。 The first pressing surface 230 is located between one end of the first pressing curved surface 210 and one end of the second pressing curved surface 220. The one end of the first pressing curved surface 210 here is an end on the +Y direction side of the ends of the first pressing curved surface 210. Similarly, one end of the second pressing curved surface 220 is an end on the +Y direction side of the ends of the second pressing curved surface 220. The first pressing surface 230 is a surface facing the closing direction CD and has a shape corresponding to the first pressure receiving surface 430.

第２押圧面２４０は、第１押圧曲面２１０の他端と第２押圧曲面２２０の他端との間に位置する。ここでいう第１押圧曲面２１０の他端とは、第１押圧曲面２１０の端のうち−Ｙ方向側の端のことである。同様に、第２押圧曲面２２０の他端とは、第２押圧曲面２２０の端のうち−Ｙ方向側の端のことである。第２押圧面２４０は、閉方向ＣＤを向いた面であって、第２受圧面４４０と対応する形状を有する面である。 The second pressing surface 240 is located between the other end of the first pressing curved surface 210 and the other end of the second pressing curved surface 220. The other end of the first pressing curved surface 210 here is an end on the −Y direction side of the ends of the first pressing curved surface 210. Similarly, the other end of the second pressing curved surface 220 is the end on the −Y direction side of the ends of the second pressing curved surface 220. The second pressing surface 240 is a surface facing the closing direction CD and has a shape corresponding to the second pressure receiving surface 440.

図６には、閉方向ＣＤに移動する弁体２００がシール部材４００に接触した瞬間の状態が示されている。図６の状態において、外向きリップ部４１５と第１押圧曲面２１０とは接触している。また、図６の状態において、内向きリップ部４２５と第２押圧曲面２２０とは接触している。なお、図１の弁体２００が開いた状態から、弁体２００が閉方向ＣＤに移動して図６の状態に移行するまで、弁体２００とシール部材４００とは接触しない。 FIG. 6 shows a state at the moment when the valve body 200 moving in the closing direction CD comes into contact with the seal member 400. In the state of FIG. 6, the outward lip portion 415 and the first pressing curved surface 210 are in contact with each other. Further, in the state of FIG. 6, the inward lip portion 425 and the second pressing curved surface 220 are in contact with each other. The valve body 200 and the seal member 400 do not come into contact with each other until the valve body 200 moves in the closing direction CD and shifts to the state of FIG. 6 from the opened state of the valve body 200 of FIG.

図７には、閉方向ＣＤに移動する弁体２００がシール部材４００に接触した後の状態が示されている。図８には、閉方向ＣＤに移動する弁体２００がシール部材４００に接触した後の状態における、弁体２００の一部とシール部材の４００の一部とが示されている。図７及び図８の状態において、外向きリップ部４１５は、第１押圧曲面２１０と接触して押されることによって、＋Ｚ方向に向けて折れ曲がる。このとき、弁体２００の第１押圧曲面２１０は外向きリップ部４１５に接触するものの、第１部分４１０には接触しない。また、図７の状態において、内向きリップ部４２５は、第２押圧曲面２２０と接触して押されることによって、−Ｚ方向に向けて折れ曲がる。図６の状態から、図７及び図８の状態に移行することによって、開口１１０は、閉じられる。すなわち、弁装置１０から−Ｚ方向側に配されるＥＧＲ管４０は、弁装置１０に対して閉じられる。 FIG. 7 shows a state after the valve body 200 moving in the closing direction CD comes into contact with the seal member 400. FIG. 8 shows a part of the valve body 200 and a part of the seal member 400 after the valve body 200 moving in the closing direction CD comes into contact with the seal member 400. In the state of FIGS. 7 and 8, the outward lip portion 415 bends in the +Z direction by coming into contact with the first pressing curved surface 210 and being pressed. At this time, the first pressing curved surface 210 of the valve body 200 contacts the outward lip portion 415, but does not contact the first portion 410. In addition, in the state of FIG. 7, the inward lip portion 425 is bent in the −Z direction by being brought into contact with the second pressing curved surface 220 and being pressed. The opening 110 is closed by shifting from the state of FIG. 6 to the states of FIGS. 7 and 8. That is, the EGR pipe 40 arranged on the −Z direction side of the valve device 10 is closed with respect to the valve device 10.

この形態によれば、外向きリップ部４１５が接続された第１部分４１０において、フランジ部４０１に接続された第１基部４１１の厚みＴ１は、第１基部４１１に対してフランジ部４０１と反対側である第１方向に位置する第１リップ支持部４１２の厚みＴ２よりも大きい。そのため、弁体２００が閉方向ＣＤに移動した際に外向きリップ部４１５にかかる力によって、胴部４０５が変形することを抑制することができる。また、第１部分４１０は、第２部分４２０から遠い部分ほどフランジ部４０１から第１方向に突出しており、第１基部４１１の中心軸ＣＡに沿った長さは、第２部分４２０から遠い部分ほど長い。そのため、第１部分４１０において、フランジ部４０１からの距離が大きい部分の剛性を高めることができ、胴部４０５が変形することを抑制することができる。したがって、弁装置１０におけるシール性を高めることができる。 According to this aspect, in the first portion 410 to which the outward lip portion 415 is connected, the thickness T1 of the first base portion 411 connected to the flange portion 401 is the side opposite to the flange portion 401 with respect to the first base portion 411. Is larger than the thickness T2 of the first lip support portion 412 located in the first direction. Therefore, it is possible to prevent the body portion 405 from being deformed by the force applied to the outward lip portion 415 when the valve body 200 moves in the closing direction CD. Further, the first portion 410 protrudes in the first direction from the flange portion 401 as it goes farther from the second portion 420, and the length of the first base 411 along the central axis CA is farther from the second portion 420. So long. Therefore, in the first portion 410, the rigidity of the portion where the distance from the flange portion 401 is large can be increased, and the deformation of the body portion 405 can be suppressed. Therefore, the sealing performance of the valve device 10 can be improved.

上記形態によれば、外向きリップ部４１５の外縁は、開口１１０に対して中心軸ＣＡ側に位置しており、第１部分４１０のうち、第１基部４１１の存在する箇所と開口１１０との間隙Ｇ１は、第１リップ支持部４１２の存在する箇所と開口１１０との間隙Ｇ２よりも短い。そのため、開口１１０と胴部４０５との間隙を利用して、第１部分４１０に外向きリップ部４１５と第１基部４１１を設けることができる。したがって、弁装置１０の外形を維持したまま、シール性能を持たせ、かつ、胴部４０５の剛性を向上させることができる。 According to the above-described embodiment, the outer edge of the outward lip portion 415 is located on the central axis CA side with respect to the opening 110, and the portion of the first portion 410 where the first base portion 411 exists and the opening 110. The gap G1 is shorter than the gap G2 between the location where the first lip support portion 412 exists and the opening 110. Therefore, the gap between the opening 110 and the body portion 405 can be used to provide the outward lip portion 415 and the first base portion 411 in the first portion 410. Therefore, while maintaining the outer shape of the valve device 10, the sealing performance can be provided and the rigidity of the body portion 405 can be improved.

上記形態によれば、シール部材４００の内径Ｒ２を維持したまま、開口１１０と胴部４０５との間隙を利用して、第１部分４１０に第１基部４１１を設けることができる。そのため、シール部材４００の胴部４０５内において流体を流通させる性能を維持したまま、胴部４０５の剛性を向上させることができる。 According to the above embodiment, the first base portion 411 can be provided in the first portion 410 by utilizing the gap between the opening 110 and the body portion 405 while maintaining the inner diameter R2 of the seal member 400. Therefore, the rigidity of the body 405 can be improved while maintaining the performance of circulating the fluid in the body 405 of the seal member 400.

上記形態によれば、胴部４０５は、樹脂材料を含む躯体部４０２と、樹脂材料よりも弾性係数の低い材料を含む表層部４０３と、から構成され、外向きリップ部４１５及び内向きリップ部４２５は、樹脂材料よりも弾性係数の低い材料により構成されている。そのため、弁体２００が閉方向ＣＤに移動した際に外向きリップ部４１５にかかる力によって、樹脂材料を含む躯体部４０２が変形することを抑制することができる。 According to the above aspect, the body portion 405 includes the body portion 402 including a resin material and the surface layer portion 403 including a material having an elastic coefficient lower than that of the resin material, and the outward lip portion 415 and the inward lip portion 415. 425 is made of a material having a lower elastic coefficient than the resin material. Therefore, it is possible to suppress the deformation of the body portion 402 including the resin material due to the force applied to the outward lip portion 415 when the valve body 200 moves in the closing direction CD.

上記形態によれば、第１基部４１１の第１方向における端部Ｓ１は、第１リップ支持部４１２の外周面Ｓ２と曲面で接続されているので、第１リップ支持部４１２にかかる力により、第１リップ支持部４１２と第１基部４１１の接続部分に応力集中が生じる可能性を低減できる。 According to the above aspect, the end portion S1 of the first base portion 411 in the first direction is connected to the outer peripheral surface S2 of the first lip support portion 412 by the curved surface, so that the force applied to the first lip support portion 412 causes It is possible to reduce the possibility that stress concentration will occur in the connection portion between the first lip support portion 412 and the first base portion 411.

Ｂ．第２実施形態
以降の説明では、第１実施形態と同じ符号は、同一の構成を示すものであって、先行する説明を参照する。図９は、第２実施形態における弁装置１０ａを、図４と同じＸＺ面で切断した場合における、シール部材４００ａの断面図である。シール部材４００ａでは、胴部４０５ａと開口１１０との間隙Ｇ１を利用して、第２部分４２０ａの厚みＴ３ａが第１実施形態の第２部分４２０の厚みＴ３よりも大きくされている。第２部分４２０ａの厚みＴ３ａは、第１部分４１０における第１基部４１１の厚みＴ１に等しい。第２部分４２０ａの厚みＴ３ａが大きくされた分、第２部分４２０ａと開口１１０との間隙Ｇ４ａは、第１実施形態における間隙Ｇ４よりも小さい。本実施形態では、第２部分４２０ａと開口１１０との間隙Ｇ４ａは、第１基部４１１と開口１１０の間隙Ｇ１と等しい。弁装置１０ａのその他の構成については、第１実施形態と同様であるため説明を省略する。 B. In the description of the second and subsequent embodiments, the same reference numerals as those in the first embodiment indicate the same configurations, and refer to the preceding description. FIG. 9 is a cross-sectional view of the seal member 400a when the valve device 10a according to the second embodiment is cut along the same XZ plane as in FIG. In the seal member 400a, the thickness T3a of the second portion 420a is made larger than the thickness T3 of the second portion 420 of the first embodiment by utilizing the gap G1 between the body portion 405a and the opening 110. The thickness T3a of the second portion 420a is equal to the thickness T1 of the first base portion 411 in the first portion 410. The gap G4a between the second portion 420a and the opening 110 is smaller than the gap G4 in the first embodiment because the thickness T3a of the second portion 420a is increased. In the present embodiment, the gap G4a between the second portion 420a and the opening 110 is equal to the gap G1 between the first base 411 and the opening 110. The other configuration of the valve device 10a is the same as that of the first embodiment, and thus the description thereof is omitted.

この形態によれば、弁装置１０ａの外形を維持したまま、開口１１０と胴部４０５ａとの間隙を利用して、内向きリップ部４２５が接続された第２部分４２０ａの厚みＴ３ａを大きくすることができる。そのため、第１実施形態の効果を奏するのに加え、胴部４０５ａの剛性をより高めることができる。したがって、弁装置１０ａのシール性をより高めることができる。 According to this aspect, the thickness T3a of the second portion 420a to which the inward lip portion 425 is connected is increased by utilizing the gap between the opening 110 and the body portion 405a while maintaining the outer shape of the valve device 10a. You can Therefore, in addition to the effect of the first embodiment, the rigidity of the body portion 405a can be further increased. Therefore, the sealing performance of the valve device 10a can be further enhanced.

Ｃ．第３実施形態
図１０は、第３実施形態における弁装置１０ｂを、図４と同じＸＺ面で切断した場合における、シール部材４００ｂの断面図である。図１０に示すように、胴部４０５ｂのうち、第２部分４２０ｂの＋Ｚ方向側における端面Ｓ３は、フランジ部４０１と平行である。弁装置１０ｂのその他の構成については、第２実施形態の弁装置１０ａと同様であるため、説明を省略する。 C. Third Embodiment FIG. 10 is a cross-sectional view of a seal member 400b when the valve device 10b according to the third embodiment is cut along the same XZ plane as FIG. As shown in FIG. 10, the end surface S3 of the body portion 405b on the +Z direction side of the second portion 420b is parallel to the flange portion 401. The rest of the configuration of the valve device 10b is the same as that of the valve device 10a of the second embodiment, so a description thereof will be omitted.

図１１は、第３実施形態の他の例における弁装置１０ｃを、図４と同じＸＺ面で切断した場合における、シール部材４００ｃの断面図である。図１１に示すように、胴部４０５ｃのうち、第２部分４２０ｂの＋Ｚ方向側における端面Ｓ４は、中心軸ＣＡから遠い部分ほどフランジ部４０１に近くなる。弁装置１０ｃのその他の構成については、第２実施形態の弁装置１０ａと同様であるため、説明を省略する。 FIG. 11 is a cross-sectional view of the seal member 400c when the valve device 10c according to another example of the third embodiment is cut along the same XZ plane as FIG. As shown in FIG. 11, in the body portion 405c, the end surface S4 on the +Z direction side of the second portion 420b is closer to the flange portion 401 as it is farther from the central axis CA. The rest of the configuration of the valve device 10c is the same as that of the valve device 10a of the second embodiment, so a description thereof will be omitted.

この形態によれば、シール部材４００ｂ、４００ｃのシール性能や剛性を維持しつつ、上述の第１実施形態及び第２実施形態と比較して、第２部分４２０ｂ、４２０ｃの体積を小さく構成することができる。そのため、第２実施形態の効果を奏するのに加え、シール部材４００ｂ、４００ｃを軽量化することができる。 According to this aspect, the volume of the second portions 420b and 420c is made smaller than that of the first and second embodiments described above while maintaining the sealing performance and rigidity of the seal members 400b and 400c. You can Therefore, in addition to the effect of the second embodiment, the weight of the sealing members 400b and 400c can be reduced.

Ｄ．他の実施形態
Ｄ１．他の実施形態１
上記実施形態において、第１受圧面４３０及び第１部分４１０と、第２受圧面４４０及び第１部分４１０と、の少なくとも一方は、曲面で接続されていてもよい。この形態によれば、弁体２００が開口１１０を密封する際に、第１受圧面４３０と第２受圧面４４０に応力集中が生じる可能性を低減できる。 D. Other Embodiments D1. Other Embodiment 1
In the above embodiment, at least one of the first pressure receiving surface 430 and the first portion 410 and the second pressure receiving surface 440 and the first portion 410 may be connected by a curved surface. According to this aspect, when the valve body 200 seals the opening 110, it is possible to reduce the possibility of stress concentration on the first pressure receiving surface 430 and the second pressure receiving surface 440.

Ｄ２．他の実施形態２
上記実施形態において、第１基部４１１の＋Ｚ方向における端部Ｓ１は、第１リップ支持部４１２の外周面Ｓ２と曲面で接続されている。これに対し、躯体部４０２のうち、第１基部４１１の＋Ｚ方向における端部Ｓ１にする部分と、躯体部４０２のうち、第１リップ支持部４１２の外周面Ｓ２に対応する部分とが曲面で接続されていれば、第１リップ支持部４１２と第１基部４１１の接続部分に応力集中が生じる可能性を低減できる。この場合には、表層部４０３のうち、第１基部４１１の＋Ｚ方向における端部Ｓ１にする部分と、表層部４０３のうち、第１リップ支持部４１２の外周面Ｓ２に対応する部分とは、曲面で接続されていなくともよい。 D2. Other Embodiment 2
In the above embodiment, the end portion S1 of the first base portion 411 in the +Z direction is connected to the outer peripheral surface S2 of the first lip support portion 412 by a curved surface. On the other hand, a part of the skeleton part 402 that is to be the end S1 in the +Z direction of the first base part 411 and a part of the skeleton part 402 that corresponds to the outer peripheral surface S2 of the first lip support part 412 are curved surfaces. If they are connected, it is possible to reduce the possibility that stress concentration will occur at the connection portion between the first lip support portion 412 and the first base portion 411. In this case, the portion of the surface layer portion 403 that is to be the end portion S1 of the first base portion 411 in the +Z direction and the portion of the surface layer portion 403 that corresponds to the outer peripheral surface S2 of the first lip support portion 412 are It does not need to be connected by a curved surface.

本開示は、上述の実施形態や変形例に限られるものではなく、その趣旨を逸脱しない範囲において種々の構成で実現することができる。例えば、発明の概要の欄に記載した各形態中の技術的特徴に対応する実施形態、変形例中の技術的特徴は、上述の課題の一部又は全部を解決するために、あるいは、上述の効果の一部又は全部を達成するために、適宜、差し替えや、組み合わせを行うことが可能である。また、その技術的特徴が本明細書中に必須なものとして説明されていなければ、適宜削除することが可能である。 The present disclosure is not limited to the above-described embodiments and modified examples, and can be realized with various configurations without departing from the spirit thereof. For example, the technical features in the embodiments and modifications corresponding to the technical features in each mode described in the section of the summary of the invention are provided in order to solve some or all of the above problems, or In order to achieve some or all of the effects, it is possible to appropriately replace or combine them. If the technical features are not described as essential in this specification, they can be deleted as appropriate.

１０、１０ａ、１０ｂ、１０ｃ 弁装置、１００ ハウジング、１１０ 開口、２００ 弁体、２１０ 第１押圧曲面、２２０ 第２押圧曲面、３００ シャフト、４００、４００ａ、４００ｂ、４００ｃ シール部材、４０１ フランジ部、４０５、４０５ａ、４０５ｂ、４０５ｃ 胴部、４１０ 第１部分、４１１ 第１基部、４１２ 第１リップ支持部、４１５ 外向きリップ部、４２０、４２０ａ、４２０ｂ 第２部分、４２５ 内向きリップ部、ＣＡ 中心軸、ＣＤ 閉方向、ＯＤ 開方向 10, 10a, 10b, 10c valve device, 100 housing, 110 opening, 200 valve body, 210 first pressing curved surface, 220 second pressing curved surface, 300 shaft, 400, 400a, 400b, 400c sealing member, 401 flange portion, 405 , 405a, 405b, 405c body, 410 first portion, 411 first base portion, 412 first lip support portion, 415 outward lip portion, 420, 420a, 420b second portion, 425 inward lip portion, CA central axis , CD closing direction, OD opening direction

Claims (7)

弁装置（１０、１０ａ、１０ｂ、１０ｃ）であって、
弁体（２００）と、
流体を受け入れる開口（１１０）を有し前記弁体を収容するハウジング（１００）と、
前記ハウジング内で前記弁体を回転可能に支持するシャフト（３００）と、
前記開口に配置されたシール部材（４００、４００ａ、４００ｂ、４００ｃ）と、を備え、
前記弁体は、前記シャフトによって回転されることにより、前記開口を開ける開方向（ＯＤ）と、前記シール部材に押圧されて前記開口を閉じる閉方向（ＣＤ）と、に移動できるように構成されており、
前記シール部材は、
前記ハウジングに固定された環状のフランジ部（４０１）と、
前記フランジ部に接続され、前記開口の内周において前記開口と所定の間隙を設けて配置され、中心軸（ＣＡ）が前記開口の中心を通る筒状の胴部（４０５、４０５ａ、４０５ｂ、４０５ｃ）であって、前記中心軸に沿った方向のうち前記シャフトに向かう方向を第１方向とした場合に、前記中心軸に対して開方向側に位置する第１部分（４１０）と、前記中心軸に対して閉方向側に位置し、前記第１部分よりも前記第１方向に突出している第２部分（４２０、４２０ａ、４２０ｂ、４２０ｃ）と、を有する、胴部（４０５、４０５ａ、４０５ｂ、４０５ｃ）と、
前記第１部分に接続され、前記中心軸から離れる方向に突出する外向きリップ部（４１５）と、
前記第２部分に接続され、前記中心軸に向けて突出し、前記外向きリップ部よりも前記シャフトに近い位置に配置される内向きリップ部（４２５）と、を有し、
前記第１部分は、前記第２部分から遠い部分ほどより前記第１方向に突出しており、
前記第２部分は、前記第１部分から遠い部分ほどより前記第１方向に突出しており、
前記弁体は、
前記外向きリップ部に押圧される第１押圧曲面（２１０）と、
前記内向きリップ部に押圧される第２押圧曲面（２２０）と、を有し、
前記第１部分は、前記フランジ部に接続された第１基部（４１１）と、前記第１基部に対して前記第１方向側に位置し、厚みが前記第１基部よりも小さい第１リップ支持部（４１２）と、を有しており、
前記第１基部の前記中心軸に沿った長さは、前記第２部分から遠い部分ほどより長くなる、
弁装置。 A valve device (10, 10a, 10b, 10c),
A valve body (200),
A housing (100) having an opening (110) for receiving a fluid and containing the valve body;
A shaft (300) rotatably supporting the valve element in the housing;
And a seal member (400, 400a, 400b, 400c) arranged in the opening,
The valve body is configured to be movable in an opening direction (OD) that opens the opening and a closing direction (CD) that is pressed by the sealing member to close the opening by being rotated by the shaft. And
The seal member is
An annular flange portion (401) fixed to the housing,
A cylindrical body portion (405, 405a, 405b, 405c) connected to the flange portion and arranged at an inner periphery of the opening with a predetermined gap from the opening, and having a central axis (CA) passing through the center of the opening. ), where the first direction is the direction toward the shaft among the directions along the central axis, the first portion (410) located on the opening direction side with respect to the central axis, and the center A trunk portion (405, 405a, 405b) having a second portion (420, 420a, 420b, 420c) that is located closer to the axis in the closing direction and that protrudes in the first direction than the first portion. , 405c),
An outward facing lip portion (415) connected to the first portion and protruding in a direction away from the central axis;
An inward lip portion (425) connected to the second portion, protruding toward the central axis, and arranged at a position closer to the shaft than the outward lip portion;
The first portion projects in the first direction from a portion farther from the second portion,
The second portion projects in the first direction from a portion farther from the first portion,
The valve body is
A first pressing curved surface (210) pressed against the outward lip portion,
A second pressing curved surface (220) pressed against the inward lip portion,
The first portion is a first base portion (411) connected to the flange portion, and a first lip support that is located on the first direction side with respect to the first base portion and has a thickness smaller than that of the first base portion. And a part (412),
The length of the first base portion along the central axis becomes longer as it goes away from the second portion.
Valve device. 請求項１に記載の弁装置であって、
前記外向きリップ部の外縁は、前記開口に対して前記中心軸側に位置し、
前記第１部分のうち、前記第１基部の存在する箇所と前記開口との間隙（Ｇ１）は、前記第１リップ支持部の存在する箇所と前記開口との間隙（Ｇ２）よりも短い、弁装置。 The valve device according to claim 1, wherein
The outer edge of the outward lip portion is located on the central axis side with respect to the opening,
The gap (G1) between the portion of the first portion where the first base portion is present and the opening is shorter than the gap (G2) between the portion where the first lip support portion is present and the opening. apparatus. 請求項２に記載の弁装置であって、
前記胴部の内径（Ｒ２）は一定である、弁装置。 The valve device according to claim 2, wherein
The valve device wherein the inner diameter (R2) of the body is constant. 請求項２又は請求項３に記載の弁装置であって、
前記第２部分の厚み（Ｔ３）は、前記第１部分における前記第１基部の厚み（Ｔ１）に等しい、弁装置。 The valve device according to claim 2 or claim 3,
The valve device, wherein the thickness (T3) of the second portion is equal to the thickness (T1) of the first base portion of the first portion. 請求項１から請求項４までのいずれか一項に記載の弁装置であって、
前記胴部は、樹脂材料を含む躯体部（４０２）と、前記躯体部を覆う表層部（４０３）であって前記樹脂材料よりも弾性係数の低い材料を含む表層部と、から構成され、
前記外向きリップ部及び前記内向きリップ部は、前記樹脂材料よりも弾性係数の低い材料により構成されている、弁装置。 The valve device according to any one of claims 1 to 4, wherein:
The body is composed of a body part (402) containing a resin material, and a surface layer part (403) covering the body part, the surface layer part containing a material having a lower elastic coefficient than the resin material,
The valve device, wherein the outward lip portion and the inward lip portion are made of a material having an elastic coefficient lower than that of the resin material. 請求項５に記載の弁装置であって、
前記第１基部の前記第１方向における端部（Ｓ１）は、前記第１リップ支持部の外周面（Ｓ２）と曲面で接続されている、弁装置。 The valve device according to claim 5, wherein
The valve device in which an end portion (S1) of the first base portion in the first direction is connected to an outer peripheral surface (S2) of the first lip support portion by a curved surface. 請求項１から請求項６までのいずれか一項に記載の弁装置であって、
前記第２部分の前記第１方向側における端面（Ｓ３、Ｓ４）は、前記フランジ部と平行、又は前記中心軸から遠い部分ほど前記フランジ部に近くなる形状を有する、弁装置。 The valve device according to any one of claims 1 to 6,
The valve device in which the end surface (S3, S4) of the second portion on the first direction side has a shape that is closer to the flange portion as it is parallel to the flange portion or farther from the central axis.
JP2019006742A 2019-01-18 2019-01-18 valve device Active JP7127552B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019006742A JP7127552B2 (en) 2019-01-18 2019-01-18 valve device
DE102019134841.2A DE102019134841A1 (en) 2019-01-18 2019-12-18 Valve device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019006742A JP7127552B2 (en) 2019-01-18 2019-01-18 valve device

Publications (2)

Publication Number Publication Date
JP2020115032A true JP2020115032A (en) 2020-07-30
JP7127552B2 JP7127552B2 (en) 2022-08-30

Family

ID=71403217

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019006742A Active JP7127552B2 (en) 2019-01-18 2019-01-18 valve device

Country Status (2)

Country Link
JP (1) JP7127552B2 (en)
DE (1) DE102019134841A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021108799A1 (en) * 2021-04-08 2022-10-13 Veritas Ag FLUID VALVE ARRANGEMENT

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5331224A (en) * 1976-09-06 1978-03-24 Yamatake Honeywell Co Ltd Valve seat
JPS5414019A (en) * 1977-06-30 1979-02-01 Honeywell Inc Eccentric rotary valve equipped with vane members for improving control property
JPS57100670U (en) * 1980-12-13 1982-06-21
JP2005521006A (en) * 2002-03-19 2005-07-14 フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー Fluid control valve with bidirectional shut-off
US6948699B1 (en) * 2001-10-05 2005-09-27 Keiser David B Retainer for a ball valve seat
JP2017155885A (en) * 2016-03-03 2017-09-07 株式会社デンソー Valve device
WO2018100872A1 (en) * 2016-11-29 2018-06-07 株式会社デンソー Valve device
JP2018091321A (en) * 2016-11-29 2018-06-14 株式会社デンソー Valve device
JP2018096490A (en) * 2016-12-15 2018-06-21 株式会社デンソー Valve device and manufacturing method of valve device
JP2020076438A (en) * 2018-11-06 2020-05-21 株式会社デンソー Valve device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5331224A (en) * 1976-09-06 1978-03-24 Yamatake Honeywell Co Ltd Valve seat
JPS5414019A (en) * 1977-06-30 1979-02-01 Honeywell Inc Eccentric rotary valve equipped with vane members for improving control property
JPS57100670U (en) * 1980-12-13 1982-06-21
US6948699B1 (en) * 2001-10-05 2005-09-27 Keiser David B Retainer for a ball valve seat
JP2005521006A (en) * 2002-03-19 2005-07-14 フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー Fluid control valve with bidirectional shut-off
JP2017155885A (en) * 2016-03-03 2017-09-07 株式会社デンソー Valve device
WO2018100872A1 (en) * 2016-11-29 2018-06-07 株式会社デンソー Valve device
JP2018091321A (en) * 2016-11-29 2018-06-14 株式会社デンソー Valve device
JP2018096490A (en) * 2016-12-15 2018-06-21 株式会社デンソー Valve device and manufacturing method of valve device
JP2020076438A (en) * 2018-11-06 2020-05-21 株式会社デンソー Valve device

Also Published As

Publication number Publication date
DE102019134841A1 (en) 2020-07-23
JP7127552B2 (en) 2022-08-30

Similar Documents

Publication Publication Date Title
US7624716B2 (en) Butterfly valve type throttle valve of internal combustion engine
US20110278799A1 (en) Seal ring
JP7127552B2 (en) valve device
WO2021149521A1 (en) Valve device
JP6701436B2 (en) Butterfly valve and exhaust gas recirculation valve
JP2020076438A (en) Valve device
US11933252B2 (en) Sealing device
JP7143772B2 (en) Valve device and manufacturing method thereof
JP2018197588A (en) Gasket and sealing structure
JP2017052336A (en) Fuel inlet box
JP6645250B2 (en) Intake device for internal combustion engine
JP4750078B2 (en) Flow control valve
US10184362B2 (en) Intake device of internal combustion engine
JP4322737B2 (en) Cylinder head cover sealing mechanism
JP2022178409A (en) Sealing structure
US20220333692A1 (en) Silent exhaust valve
WO2021245812A1 (en) Exhaust gas recirculation valve
WO2024135416A1 (en) Sealing device
US20220307601A1 (en) Valve stem seal
JP4769645B2 (en) Oil seal
JPWO2021245812A5 (en)
JP2023012342A (en) sealing device
JP2005009585A (en) Sealing device
JPWO2021090887A5 (en)
JP2022056868A (en) Seal ring

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20210625

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20220405

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20220526

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20220719

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20220801

R151 Written notification of patent or utility model registration

Ref document number: 7127552

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151