WO1988008096A1 - Diaphragm - Google Patents

Diaphragm Download PDF

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Publication number
WO1988008096A1
WO1988008096A1 PCT/JP1987/000231 JP8700231W WO8808096A1 WO 1988008096 A1 WO1988008096 A1 WO 1988008096A1 JP 8700231 W JP8700231 W JP 8700231W WO 8808096 A1 WO8808096 A1 WO 8808096A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
sheet
rubber
elastic material
gas
Prior art date
Application number
PCT/JP1987/000231
Other languages
French (fr)
Japanese (ja)
Inventor
Satoru Otsuki
Original Assignee
Nok Corporation
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 Nok Corporation filed Critical Nok Corporation
Priority to PCT/JP1987/000231 priority Critical patent/WO1988008096A1/en
Publication of WO1988008096A1 publication Critical patent/WO1988008096A1/en

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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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04—Devices damping pulsations or vibrations in fluids
    • F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
    • F16L55/05—Buffers therefor
    • F16L55/052—Pneumatic reservoirs
    • F16L55/053—Pneumatic reservoirs the gas in the reservoir being separated from the fluid in the pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/02—Diaphragms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/205—Accumulator cushioning means using gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3151—Accumulator separating means having flexible separating means the flexible separating means being diaphragms or membranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/41—Liquid ports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/415—Gas ports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/43—Anti-extrusion means

Definitions

  • the present invention relates to a diaphragm, and more particularly, to a diaphragm in which a sheet-like member having no gas permeation resistance, such as a metal foil or a resin film, is provided to improve gas permeation resistance.
  • diaphragms that consist of only rubber-like elastic material and are displaced according to the pressure difference acting on both sides have been installed in devices such as accumulators and attached to accumulators.
  • a pressure chamber having a predetermined sealing pressure is formed on one side of the diaphragm, and a chamber communicating with the pulsating flow path is formed on the other side, and when pulsation occurs in the flow path, The diaphragm is displaced toward the pressure chamber against the sealing pressure of the pressure chamber, and the displacement absorbs the pulsation of the flow path.
  • the present invention does not have the drawbacks of the conventional diaphragm, has high gas permeability resistance, and prevents a decrease in the pressure of the pressure chamber in the pressure chamber for a long period of time even when used in an accumulator. It is intended to provide a diaphragm capable of performing such operations.
  • the comb-like elastic material forming the diaphragm is Since a sheet-like member having gas permeation resistance, such as a metal foil or a resin film, is provided, gas permeation resistance is significantly improved.
  • FIG. 1 is a diagram showing a cross section of a preferred diaphragm according to the present invention.
  • FIG. 2 is a diagram showing another embodiment of the diaphragm according to the present invention.
  • FIG. 3 is a diagram showing another example of the diaphragm according to the present invention.
  • FIG. 4 is a diagram showing a state where the one shown in FIG. 3 is attached to an accumulator, and
  • FIG. 5 is a diagram showing still another embodiment of the diaphragm according to the present invention.
  • FIG. 1 shows a gas-resistant material such as a metal foil or a resin film provided along the inner surface of a diaphragm main body 2 made of a cylindrical rubber-like elastic material whose one end is closed.5 A permeable sheet-like member 3 is provided. As a result, the diaphragm 1 is formed with force, so that the diaphragm 1 has a double structure of a diaphragm main body 2 made of a rubber-like elastic material and a sheet-like member 3. —
  • this diaphragm 1 is made up of only rubber-like elastic forest and does not have Z 0, and a sheet-like member 3 having gas resistance is provided on the inner surface of the rubber-like elastic material. As a result, the gas permeation resistance of the diaphragm 1 itself is significantly improved.
  • FIG. 2 shows another embodiment of the present invention, in which gas-permeable material made of metal foil or resin film is formed along the outer surface of a diaphragm main body 5 made of a cylindrical rubber-like elastic material having one end closed. Is provided, and the diaphragm 4 is formed by this. Therefore, the diaphragm 4 has a double structure of a diaphragm main body 5 made of a rubber-like elastic material and a sheet-like member &. It is composed of
  • the diaphragm 4 has a gas-permeable sheet-like member 3 provided on the inner surface of the diaphragm body 30 shown in FIG. 1, whereas the outer surface of the diaphragm body 5 Gas permeation resistance There is provided a sheet-like member 6 having a property.
  • FIG. 3 shows still another embodiment of the present invention, in which a sheet-like member 9 such as a metal foil or a resin film having almost no gas permeability is bent in a bellows-like shape so as to be expandable and contractible.
  • the semi-spherical sheet member 9 is formed into a hemispherical shape by integrally vulcanizing and molding the semi-spherical sheet member 9 so as to be embedded with the diaphragm main body 8 being a rubber-like elastic material. It is.
  • the diaphragm main body 8 which is a rubber-like elastic material is extended, and the diaphragm 7 is integrally formed with the diaphragm 7.
  • the sheet-like member 9 also extends integrally, but at this time, the sheet-like member 9 does not itself expand, but is formed in a bellows shape, so that the rubber-like elastic material is formed by the extensibility of the bellows.
  • the sheet-like member 9 such as a metal foil or a resin film itself does not expand when the diaphragm body 8 is expanded. It can be extended smoothly without any load.
  • the overall elongation of the diaphragm 7 can be almost the same as that of a diaphragm formed of only a rubber-like elastic material, and furthermore, a metal foil or a resin film or the like is provided inside. Since the sheet-shaped member is buried, the gas permeability resistance is high.
  • FIG. 4 shows a state where the one shown in FIG. 3 is used for an accumulator.
  • a diaphragm 7 is provided in the space formed between the upper and lower casings 10 and 11 so as to cover the annular lower end 12 of the upper casing 10, and the diaphragm 7 and the upper casing 10 are provided.
  • the lower casing 11 is provided with a plurality of holes 14, and the inner surface of the lower casing 11 is in contact with the diaphragm 7.
  • the upper casing # 0 is provided with a gas inflow hole 5 communicating with the gas chamber.
  • the gas inflow hole 15 allows the inside of the gas chamber to have a predetermined sealing pressure.
  • the plurality of holes 14 provided in the lower casing 11 communicate with the flow path. You.
  • the pulsation in the flow path can be absorbed by the displacement of the diaphragm 7 toward the gas chamber.
  • FIG. 5 shows still another embodiment of the present invention.
  • a cylinder having one end closed is shown. However, it has a cylindrical shape having both ends opened. Used for accumulators.
  • the diaphragm 15 has a sheet-like member 17 such as a metal foil or a resin film formed in a bellows shape, and a ⁇ side of the sheet-like member 17- such as a metal foil or a resin film. It is covered with a diaphragm body 16 which is a rubbery elastic forest.
  • This embodiment also has the same function as that of the embodiment shown in FIG.
  • the diaphragm according to the present invention is useful for use in accumulators and the like, and in particular, in a device such as an accumulator, it is possible to maintain the sealing pressure for a long period of time. Suitable for what you need.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

Diaphragms (1, 4, 7, 15) are composed of a rubber-like elastic material (2, 5, 8, 16) and sheet-like members (3, 6, 9, 17) made up of metal foils or members impermeable to gas, such as a resin membrane etc. This diaphragm is used for such equipment as an accumulator etc., in such a manner that said diaphragm forms on one side a part of a pressure chamber (13) charged with a gas in advance and on the other side a part of a chamber (14) which communicates with flow passages, so that pressurized gas in the pressure chamber (13) is prevented from leaking to the chamber (14) communicating with the flow passages for a long period of time.

Description

]  ]
明 細 書  Specification
ダイアフラム  Diaphragm
技術分野  Technical field
この発明はダイァフラムに関し、 特に、 金属箔または樹脂膜等の耐 気体透過性の無いシート状部材を配設して耐気体透過性を向上させる ことができるダイアフラムに関する。  The present invention relates to a diaphragm, and more particularly, to a diaphragm in which a sheet-like member having no gas permeation resistance, such as a metal foil or a resin film, is provided to improve gas permeation resistance.
背景技術  Background art
従来から、 ゴム状弾性材のみから構成され、 両側に作用する圧力差 に応じて変位するようになっているダイァフラムにあっては、 アキュ ムレータ等の機器に配設されており、 アキュムレータに取付けられた o 場合には、 ダイァフラムの一側で所定の封入圧力を有する圧力室を形 成し、 また、 他側で脈動する流路と連通する室を形成し、 流路に脈動 が発生した際にはダイアフラムが圧力室の封入圧力に抗して圧力室側 に変位し、 この変位することによって流路の脈動を吸収するようにな つている。  Conventionally, diaphragms that consist of only rubber-like elastic material and are displaced according to the pressure difference acting on both sides have been installed in devices such as accumulators and attached to accumulators. In this case, a pressure chamber having a predetermined sealing pressure is formed on one side of the diaphragm, and a chamber communicating with the pulsating flow path is formed on the other side, and when pulsation occurs in the flow path, The diaphragm is displaced toward the pressure chamber against the sealing pressure of the pressure chamber, and the displacement absorbs the pulsation of the flow path.
しかしながら、 従来のダイァフラムを用いたアキュムレータにあつ ては、 その圧力室側に封入した気体がダイァフラムを透過してしまう' ので気体の圧力が時間とともに低下し、 これによつて流路内に生じた 脈動の吸収機能が低下し、 長期間に渡って脈動の吸収機能を維持する ことができず、 このために短い時間で圧力室内の封入圧力の調整を行 なう必要が生じた。  However, in a conventional accumulator using a diaphragm, the gas sealed in the pressure chamber side passes through the diaphragm, and the pressure of the gas decreases with time. The pulsation absorption function was reduced, and the pulsation absorption function could not be maintained for a long period of time. Therefore, it was necessary to adjust the sealing pressure in the pressure chamber in a short time.
従来のダイァフラムにあっては、 全体がゴム状弾性材のみで構成さ れていたために、 たとえば、 アキュムレータに使用した際には圧力室 内に封入した気体が時間とともに透過して流路側に漏洩してしまうこ とがあるという欠点を有していた。  In conventional diaphragms, the whole was made of only rubber-like elastic material.For example, when used in an accumulator, the gas sealed in the pressure chamber permeated with time and leaked to the flow channel side. Had the drawback that it could be lost.
したがって、 本発明は、 このような従来のダイアフラ の欠点の存 在しない、 耐気体透過性が高く、 アキュムレータに使用した場合であ つても長期間に渡って圧力室の封入圧力の低下を防止することのでき るダイアフラムを提供することを目的とする。  Therefore, the present invention does not have the drawbacks of the conventional diaphragm, has high gas permeability resistance, and prevents a decrease in the pressure of the pressure chamber in the pressure chamber for a long period of time even when used in an accumulator. It is intended to provide a diaphragm capable of performing such operations.
発明の開示  Disclosure of the invention
すなわち、 本発明は、 ダイアフラムを形成するコム状弾性材に、 金 属箔ゃ裰脂膜等の耐気体透過性を有するシート状部材が配設されてい るので耐気体透過性が著しく向上する。 That is, according to the present invention, the comb-like elastic material forming the diaphragm is Since a sheet-like member having gas permeation resistance, such as a metal foil or a resin film, is provided, gas permeation resistance is significantly improved.
図面の簡単な説明  BRIEF DESCRIPTION OF THE FIGURES
第 1図は、 この発明に係る好ましいダイァフラムの断面を示す図、 5 第 2図は、 この発明に係るダイァフラムの他の実施例を示す図、 第 3 図は、 この発明に係るダイアフラムのさらに他の実施例を示す図、 第 4図は、 第 3図に示すものをアキュムレータに取付けた状態を示す図、 第 5図は、 この発明に係るダイァフラムのさらに他の実施例を示す図 である。  FIG. 1 is a diagram showing a cross section of a preferred diaphragm according to the present invention. 5 FIG. 2 is a diagram showing another embodiment of the diaphragm according to the present invention. FIG. 3 is a diagram showing another example of the diaphragm according to the present invention. FIG. 4 is a diagram showing a state where the one shown in FIG. 3 is attached to an accumulator, and FIG. 5 is a diagram showing still another embodiment of the diaphragm according to the present invention.
, 0 発明を実施するための最良の形態  , 0 BEST MODE FOR CARRYING OUT THE INVENTION
本発明をより詳細に説述するために、 以下、 添付図面に従ってこれ を説明する。  Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.
第 1図は、 一端が閉塞している円筒状のゴム状弾性材からなるダイ ァフラム本体 2の内面に沿って金属箔または樹脂膜等からなる耐気体 . 5 透過性のシート状部材 3が設けられ、 これによつてダイアフラム 1力 -形成されており、 したがって、 ダイアフラム 1は、 ゴム状弾性材から なるダイアフラム本体 2とシート状部材 3との 2重構造で構成されて いる。 —  FIG. 1 shows a gas-resistant material such as a metal foil or a resin film provided along the inner surface of a diaphragm main body 2 made of a cylindrical rubber-like elastic material whose one end is closed.5 A permeable sheet-like member 3 is provided. As a result, the diaphragm 1 is formed with force, so that the diaphragm 1 has a double structure of a diaphragm main body 2 made of a rubber-like elastic material and a sheet-like member 3. —
このダイアフラム 1は、 従来のものと異なってゴム状弾性林のみで Z 0 は構成されておらず、 ゴム状弾性材の内部には耐気体透過性のあるシ 一ト状部材 3が内面に沧つて設けられているのでダイアフラム 1自体 の耐気体透過性が著しく向上する。  Unlike the conventional diaphragm 1, this diaphragm 1 is made up of only rubber-like elastic forest and does not have Z 0, and a sheet-like member 3 having gas resistance is provided on the inner surface of the rubber-like elastic material. As a result, the gas permeation resistance of the diaphragm 1 itself is significantly improved.
第 2図は、 この発明の他の実施例を示し、 一端が閉塞している円筒 状のゴム状弾性材からなるダイアフラム本体 5の外面に沿つて金属箔 または樹脂膜等からなる耐気体透過性のシ一ト状部材 6が設けられ、 これによつてダイアフラム 4が形成されており、 したがって、 ダイァ フラム 4は、 ゴム状弾性材からなるダイアフラム本体 5とシート状部 材&との 2重構造で構成されている。  FIG. 2 shows another embodiment of the present invention, in which gas-permeable material made of metal foil or resin film is formed along the outer surface of a diaphragm main body 5 made of a cylindrical rubber-like elastic material having one end closed. Is provided, and the diaphragm 4 is formed by this. Therefore, the diaphragm 4 has a double structure of a diaphragm main body 5 made of a rubber-like elastic material and a sheet-like member &. It is composed of
このダイアフラム 4は、 第 1図に示すダイアフラムカ ダイアフラ 3 0 ム本体 2の内面に ¾って耐気体透過性のあるシート状部材 3が設けら れているのに対して、 ダイアフラム本体 5の外面に ¾つて耐気体透過 性のあるシート状部材 6が設けられている。 The diaphragm 4 has a gas-permeable sheet-like member 3 provided on the inner surface of the diaphragm body 30 shown in FIG. 1, whereas the outer surface of the diaphragm body 5 Gas permeation resistance There is provided a sheet-like member 6 having a property.
このために、 耐気体透過性が著しく向上するものである。  For this reason, gas permeation resistance is remarkably improved.
第 3図は、 この発明のさらに他の実施例を示し、 気体透過性のほと んど無い金属箔または樹脂膜等のシート状部材 9を蛇腹状に屈曲して 伸縮自在としたものを半球状に形成し、 この半球状のシート状部材 9 を埋設するようにゴム状弾性材であるダイアフラム本体 8で被覆した 状態に一体に加硫成形し、 ダイアフラム 7の全体を半球状に形成した ものである。  FIG. 3 shows still another embodiment of the present invention, in which a sheet-like member 9 such as a metal foil or a resin film having almost no gas permeability is bent in a bellows-like shape so as to be expandable and contractible. The semi-spherical sheet member 9 is formed into a hemispherical shape by integrally vulcanizing and molding the semi-spherical sheet member 9 so as to be embedded with the diaphragm main body 8 being a rubber-like elastic material. It is.
そして、 上記のように構成したダイアフラム 7を変形させる場合、 たとえば、 伸張させようとする場合とゴム状弾性材であるダイアフラ ム本体 8が伸張し、 これと一体に金属箔または樹脂膜等のシ一ト状部 材 9も一体に伸張するが、 この時、 シート状部材 9は、 それ自体が伸 張するものではなく、 蛇腹状に形成されているので蛇腹の有する伸張 性によってゴム状弾性材であるダイアフラム本体 8とともに一体に伸 張し、 また、 伸張時に、 金属箔または樹脂膜等のシート状部材 9自体 が伸張するのではないのでゴム状弾性材のダイアフラム本体 8の伸張 に対して何ら負荷となることがなく、 円滑に伸張することができる。 このために、 ダイアフラム 7の全体の伸び率に関しては、 ゴム状弾 性材のみで形成したダイアフラムと比較してほぼ同一の伸び率を得る ことができ、 しかも、 内部には金属箔または樹脂膜等のシート状部材 が埋設されているので耐気体透過性が高いこととなる。  When the diaphragm 7 configured as described above is deformed, for example, when the diaphragm 7 is to be extended, the diaphragm main body 8 which is a rubber-like elastic material is extended, and the diaphragm 7 is integrally formed with the diaphragm 7. The sheet-like member 9 also extends integrally, but at this time, the sheet-like member 9 does not itself expand, but is formed in a bellows shape, so that the rubber-like elastic material is formed by the extensibility of the bellows. And the sheet-like member 9 such as a metal foil or a resin film itself does not expand when the diaphragm body 8 is expanded. It can be extended smoothly without any load. For this reason, the overall elongation of the diaphragm 7 can be almost the same as that of a diaphragm formed of only a rubber-like elastic material, and furthermore, a metal foil or a resin film or the like is provided inside. Since the sheet-shaped member is buried, the gas permeability resistance is high.
第 4図は、 第 3図に示すものをアキュ.ムレータに用いた状態を示す。 上下ケ一シング 1 0、 1 1間に形成された空所内に、 上ケ一シング 1 0の環状下端部 1 2を覆ってダイアフラム 7が設けられ、 ダイァフ ラム 7と、 前記上ケーシング 1 0とで気体室が形成され.、 また、 下ケ —シング 1 1 には複数の孔 1 4が設けられるとともに、 下ケーシング 1 1 の内面とダイアフラム 7 とが接触している。  FIG. 4 shows a state where the one shown in FIG. 3 is used for an accumulator. A diaphragm 7 is provided in the space formed between the upper and lower casings 10 and 11 so as to cover the annular lower end 12 of the upper casing 10, and the diaphragm 7 and the upper casing 10 are provided. The lower casing 11 is provided with a plurality of holes 14, and the inner surface of the lower casing 11 is in contact with the diaphragm 7.
前記上ケーシング〗 0に、 前記気体室と連通する気体流入孔】 5が 設けられ、 この気体流入孔 1 5によって気体室の内部が所定の封入圧 力になる。  The upper casing # 0 is provided with a gas inflow hole 5 communicating with the gas chamber. The gas inflow hole 15 allows the inside of the gas chamber to have a predetermined sealing pressure.
また、 前記下ケ一シング 1 1に設けた複数の孔 1 4は流路と連通す る。 Also, the plurality of holes 14 provided in the lower casing 11 communicate with the flow path. You.
したがつて、 流路内の脈動ば前記ダイァフラム 7が気体室側に変位 することで吸収できる。  Therefore, the pulsation in the flow path can be absorbed by the displacement of the diaphragm 7 toward the gas chamber.
このダイァフラム 7の変位時に、 ダイアフラム 7はゴム状弾性材の みで構成したものとほぼ同様に変形可能であり、 ダイアフラム 7の内 部には金属箔または樹脂膜等のシート状部材 9が設けられているので 気体室の内部に封入した圧力は長期間に渡って一定に維持される。 第 5図は、 この発明のさらに他の実施例を示し、 前記実施例では一 端が閉塞した筒犾のものを示したが、 両端が開口した円筒形状のもの であり、 特に、 ィンライン型のアキュムレータに使用される。  When the diaphragm 7 is displaced, the diaphragm 7 can be deformed in substantially the same manner as that made of only a rubber-like elastic material, and a sheet-like member 9 such as a metal foil or a resin film is provided inside the diaphragm 7. Therefore, the pressure sealed in the gas chamber is maintained constant over a long period of time. FIG. 5 shows still another embodiment of the present invention. In the above-described embodiment, a cylinder having one end closed is shown. However, it has a cylindrical shape having both ends opened. Used for accumulators.
この実施例によるダイアフラム 1 5は、 金属箔または樹脂膜等のシ ート状部材 1 7を铊腹状に形成し、 この金属箔または樹脂膜等のシー ト状部材 1 7-の^側を、 ゴム状弾性林であるダイアフラム本体 1 6で 覆ったものである。  The diaphragm 15 according to this embodiment has a sheet-like member 17 such as a metal foil or a resin film formed in a bellows shape, and a ^ side of the sheet-like member 17- such as a metal foil or a resin film. It is covered with a diaphragm body 16 which is a rubbery elastic forest.
このものにあっても、 前記第 3図に示した実施例のものと同様の機 能を有する。  This embodiment also has the same function as that of the embodiment shown in FIG.
産業上の利用可能性  Industrial applicability
以上のように、 本発明に係るダイアフラ厶にあっては、 アキュムレ ータ等に使用するのに有用であって、 特に、 アキュムレータ等の機器 において、 封入圧力を長期間に渡って維持することが必要なものに用 いるのに適している。  As described above, the diaphragm according to the present invention is useful for use in accumulators and the like, and in particular, in a device such as an accumulator, it is possible to maintain the sealing pressure for a long period of time. Suitable for what you need.

Claims

言青求 )範画 Call for words)
1. ゴム状弾性材と、 金属箱または樹脂膜等の耐気体透過性 οある材料 から形成されたシート状部材とから構成されたことを特徴とするダイ アフラ丄 1. A diaphragm characterized by comprising a rubber-like elastic material and a sheet-like member formed of a material having gas permeability resistance such as a metal box or a resin film.
2. 前記シート状部材は、 前記ゴム状弾性材の内面に ¾つて設けられて 5 いる請求の範囲第】項記載のダイァフラム。  2. The diaphragm according to claim 5, wherein said sheet-like member is provided on the inner surface of said rubber-like elastic material.
3. 前記シート状部材は、 前記ゴム状弾性材の外面に ¾つて設けられて いる請求の範囲第 1項記載のダイァフラム。  3. The diaphragm according to claim 1, wherein the sheet-like member is provided on an outer surface of the rubber-like elastic material.
4. 前記シート状部材は、 半径方向に伸縮可能となるように蛇腹状に形 成された半球形状をなし、 このンー ト状部材が半球形状をなす前記ゴ ム状弾性材の内部に配設されている請求 O S囲第〗項記載のダイァフ フ e  4. The sheet-shaped member has a hemispherical shape formed in a bellows shape so as to be able to expand and contract in the radial direction, and the antenna-like member is disposed inside the rubber-like elastic material having a hemispherical shape. Draft e described in item III of OS
前記シー ト状部材は、 軸線方向に伸縮可能となるように蛇腹状に形 成された円筒形状をなし、 このシート状部材が円筒形状をなす前記ゴ ム状弾性材の内部に配設されている請求の範囲第〗項記載のダイァフ S フム  The sheet-like member has a cylindrical shape formed in a bellows shape so as to be able to expand and contract in the axial direction, and the sheet-like member is disposed inside the rubber-like elastic material having a cylindrical shape. Dif S hum described in Claim I
?た な用 ¾ た 用
PCT/JP1987/000231 1987-04-13 1987-04-13 Diaphragm WO1988008096A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1987/000231 WO1988008096A1 (en) 1987-04-13 1987-04-13 Diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1987/000231 WO1988008096A1 (en) 1987-04-13 1987-04-13 Diaphragm

Publications (1)

Publication Number Publication Date
WO1988008096A1 true WO1988008096A1 (en) 1988-10-20

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Application Number Title Priority Date Filing Date
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Country Link
WO (1) WO1988008096A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4318198C1 (en) * 1993-06-01 1994-11-03 Darko Dipl Ing Prazic Diaphragm support
EP1061311A2 (en) 1999-06-15 2000-12-20 Winkelmann & Pannhoff GmbH & Co. Stahl-Behälter-Technik Pressure balance mechanism for a hot water tank
CN1092294C (en) * 1997-09-29 2002-10-09 曹建钢 Membrane accumulator

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4328541Y1 (en) * 1965-12-18 1968-11-25
JPS4635735Y1 (en) * 1968-10-21 1971-12-08
JPS4943054A (en) * 1972-08-29 1974-04-23
JPS4951875U (en) * 1972-08-18 1974-05-08
JPS5761269U (en) * 1980-09-30 1982-04-12
JPS5829327Y2 (en) * 1977-09-13 1983-06-27 月星化成株式会社 diaphragm
JPS603354U (en) * 1983-06-21 1985-01-11 株式会社　荒井製作所 diaphragm

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4328541Y1 (en) * 1965-12-18 1968-11-25
JPS4635735Y1 (en) * 1968-10-21 1971-12-08
JPS4951875U (en) * 1972-08-18 1974-05-08
JPS4943054A (en) * 1972-08-29 1974-04-23
JPS5829327Y2 (en) * 1977-09-13 1983-06-27 月星化成株式会社 diaphragm
JPS5761269U (en) * 1980-09-30 1982-04-12
JPS603354U (en) * 1983-06-21 1985-01-11 株式会社　荒井製作所 diaphragm

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4318198C1 (en) * 1993-06-01 1994-11-03 Darko Dipl Ing Prazic Diaphragm support
CN1092294C (en) * 1997-09-29 2002-10-09 曹建钢 Membrane accumulator
EP1061311A2 (en) 1999-06-15 2000-12-20 Winkelmann & Pannhoff GmbH & Co. Stahl-Behälter-Technik Pressure balance mechanism for a hot water tank
DE19927078C1 (en) * 1999-06-15 2001-02-15 Winkelmann & Pannhoff Gmbh & C Pressure compensation device for a hot water tank or the like.

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