JPH0527380U - Liquid-filled anti-vibration device - Google Patents

Liquid-filled anti-vibration device

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Publication number
JPH0527380U
JPH0527380U JP7658291U JP7658291U JPH0527380U JP H0527380 U JPH0527380 U JP H0527380U JP 7658291 U JP7658291 U JP 7658291U JP 7658291 U JP7658291 U JP 7658291U JP H0527380 U JPH0527380 U JP H0527380U
Authority
JP
Japan
Prior art keywords
diaphragm
pressure
vibration
air chamber
chamber
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.)
Withdrawn
Application number
JP7658291U
Other languages
Japanese (ja)
Inventor
邦夫 斉藤
啓祐 竹内
順一 鈴木
直躬 三岡
俊之 柴山
道儀 有馬
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.)
Toyota Motor Corp
Hosei Brake Industry Co Ltd
Toyo Tire Corp
Original Assignee
Toyo Tire and Rubber Co Ltd
Toyota Motor Corp
Hosei Brake Industry Co Ltd
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 Toyo Tire and Rubber Co Ltd, Toyota Motor Corp, Hosei Brake Industry Co Ltd filed Critical Toyo Tire and Rubber Co Ltd
Priority to JP7658291U priority Critical patent/JPH0527380U/en
Publication of JPH0527380U publication Critical patent/JPH0527380U/en
Withdrawn legal-status Critical Current

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Abstract

(57)【要約】 【目的】空気室の圧力制御によりダイヤフラムを拘束し
て防振特性を切替るようにした液体封入式防振装置で、
拘束時のダイヤフラムの撓み形状を、防振特性の保持お
よび耐久性向上に適するように拘束でき、さらに部品点
数および組立に要する手数を削減し、コスト低下を図
る。 【構成】ダイヤフラム副液室13に隣接する空気室14
を圧力制御可能にし、負圧導入時にダイヤフラム12を
拘束状態に保持して防振特性を切換るようにした防振装
置で、圧力制御される空気室14に接するダイヤフラム
12と対向して空気室14を画成する仕切部材4を、ダ
イヤフラム12との対向面側に軸心部を中心に複数のリ
ング状突起42を適当な間隔で配設するとともに、これ
らのリング状突起42による対向面41がダイヤフラム
12の拘束時の形状に相応するようにその突起高さを変
化させ、前記間隔部分43を圧力制御のための空気給排
用の導通孔15に連通させる。
(57) [Summary] [Purpose] A liquid-filled type vibration damping device in which the vibration is controlled by restraining the diaphragm by controlling the pressure in the air chamber.
The flexure shape of the diaphragm at the time of restraint can be restrained so as to be suitable for maintaining the anti-vibration characteristics and improving the durability, and further, the number of parts and the number of steps required for assembly can be reduced to reduce the cost. [Composition] Air chamber 14 adjacent to diaphragm sub-liquid chamber 13
Is a pressure-controllable device, and when the negative pressure is introduced, the diaphragm 12 is held in a restrained state to switch the vibration-damping characteristics. The vibration-damping device is arranged so as to face the diaphragm 12 in contact with the pressure-controlled air chamber 14. The partition member 4 defining 14 is provided with a plurality of ring-shaped projections 42 at appropriate intervals on the surface facing the diaphragm 12 with the axial center as a center, and the facing surface 41 formed by these ring-shaped projections 42. Changes the projection height of the diaphragm 12 so as to correspond to the shape of the diaphragm 12 when restrained, so that the gap portion 43 communicates with the air supply / discharge through hole 15 for pressure control.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、内部のダイヤフラム副液室に隣接する空気室を圧力制御して防振特 性を切替るようにした液体封入式防振装置に関するものである。 The present invention relates to a liquid filled type vibration damping device in which an air chamber adjacent to an inner diaphragm sub liquid chamber is pressure-controlled to switch vibration damping characteristics.

【0002】[0002]

【従来の技術と考案が解決しようする課題】[Problems to be solved by conventional techniques and devices]

例えば、自動車のエンジン等のパワーユニットを支承するマウント等の液体封 入式の防振装置は、液体が充満された主液室とダイヤフラム副液室とをオリフィ スにより連通させ、このオリフィス内液体の共振により振動減衰効果を得るもの であり、特にエンジンシェイク時の振動とアイドリング時の振動とが異なった周 波数域にあることから、振動の状態に応じてその防振特性を変化させるようにし たものが種々提案されている。 For example, a liquid-sealed vibration isolation device such as a mount that supports a power unit such as an automobile engine connects the main liquid chamber filled with the liquid with the diaphragm sub-liquid chamber by an orifice, and The vibration damping effect is obtained by resonance. Especially, the vibration during engine shake and the vibration during idling are in different frequency ranges, so the vibration isolation characteristics are changed according to the vibration state. Various things have been proposed.

【0003】 本出願人らも、前記のように防振特性を変化させるようにした防振装置を開発 しており、図6はその1例を示す。この防振装置の概略を説明すると、次のとお りである。The present applicants have also developed an anti-vibration device that changes the anti-vibration characteristics as described above, and FIG. 6 shows an example thereof. The outline of this anti-vibration device is as follows.

【0004】 エンジン等の振動源側に連結される部材(1)と、シャーシ等の支持側に連結 されるケーシングを兼ねる筒状部材(2)とが、ゴム等の弾性体よりなる厚肉の 防振基体(3)を介して結合されている。前記筒状部材(2)の下部側筒部内周 には、仕切部材(4′)が嵌着されるとともに、その下側にゴム等のダイヤフラ ム(5)が取着され、仕切部材(4′)と防振基体(3)との間が液体が充満さ れる主液室(6)として、また仕切部材(4′)とダイヤフラム(5)との間が 仕切部材(4′)に有する第1のオリフィス(7)を介して前記主液室(6)と 連通する第1のダイヤフラム副液室(8)として形成されている。(9)はダイ ヤフラム(5)と共に取着された底部材である。また仕切部材(4′)の主液室 (6)側に、前記第1のオリフィス(7)より液体通過抵抗の小さい第2のオリ フィス(10)を形成する部材(11)が取着されるとともに、その内側の仕切 部材(4′)との間にダイヤフラム(12)が取着されて、第2のダイヤフラム 副液室(13)が形成されている。A member (1) connected to a vibration source side such as an engine and a tubular member (2) also functioning as a casing connected to a support side such as a chassis have a thick wall made of an elastic body such as rubber. It is connected via a vibration-proof substrate (3). A partition member (4 ') is fitted on the inner periphery of the lower side tubular portion of the tubular member (2), and a diaphragm (5) such as rubber is attached to the lower side of the partition member (4'), so that the partition member (4 ′) And the anti-vibration substrate (3) have a main liquid chamber (6) filled with the liquid, and a partition member (4 ′) and the diaphragm (5) have a partition member (4 ′). It is formed as a first diaphragm sub-liquid chamber (8) communicating with the main liquid chamber (6) through the first orifice (7). (9) is a bottom member attached together with the diaphragm (5). Further, a member (11) forming a second orifice (10) having a smaller liquid passage resistance than the first orifice (7) is attached to the partition member (4 ') on the side of the main liquid chamber (6). At the same time, the diaphragm (12) is attached to the inside of the partition member (4 ') to form the second diaphragm auxiliary liquid chamber (13).

【0005】 そして前記のオリフィス形成部材(11)内のダイヤフラム(12)と仕切部 材(4′)との間に空気室(14)が形成され、この空気室(14)が仕切部材 (4′)に形成されて筒状部材(2)の外周に開口する導通孔(15)を介して 真空圧等の負圧と大気圧のいずれかを選択的に導入できるように設けられるとと もに、この負圧導入と大気圧導入の切替による圧力制御により、負圧導入時にダ イヤフラム(12)の動きを拘束して、その防振特性を変化できるようになって いる。An air chamber (14) is formed between the diaphragm (12) and the partition member (4 ′) in the orifice forming member (11), and the air chamber (14) is formed by the partition member (4). It is also provided so that either negative pressure such as vacuum pressure or atmospheric pressure can be selectively introduced through a conduction hole (15) formed in the outer peripheral surface of the cylindrical member (2) formed in ′). Moreover, by controlling the pressure by switching between the introduction of negative pressure and the introduction of atmospheric pressure, it is possible to restrict the movement of the diaphragm (12) at the time of introduction of negative pressure and change its anti-vibration characteristics.

【0006】 しかして、負圧導入によるダイヤフラム拘束時におけるダイヤフラム(12) の撓み形状は、ダイヤフラム自体の具有弾性力等に特性に応じて最適なものとな るように設定しておくのが、防振特性の保持およびダイヤフラムの耐久性向上等 の点から好ましい。そのため、通常、図6に示すように、圧力制御される空気室 (14)内にダイヤフラム(12)の撓み形状を規制する多孔板等よりなる拘束 板(19)が付設されている。However, the deflection shape of the diaphragm (12) when the diaphragm is restrained by the introduction of negative pressure is set so as to be an optimum one according to the characteristics of the diaphragm itself such as the elastic force. It is preferable from the standpoints of maintaining anti-vibration properties and improving the durability of the diaphragm. Therefore, as shown in FIG. 6, a restraint plate (19) made of a perforated plate or the like for restricting the bending shape of the diaphragm (12) is usually provided in the pressure-controlled air chamber (14).

【0007】 しかし、前記のようにダイヤフラム(12)に対向して空気室(14)を画成 する仕切部材(4′)にこれとは別の拘束板(19)を付設するのは、部品点数 が多くなるばかりでなく、この付設作業のために組立に手数がかかり、コスト高 なものとなる欠点があった。However, as described above, it is necessary to attach a restraining plate (19) different from the partitioning member (4 ′) facing the diaphragm (12) and defining the air chamber (14) to the parts. Not only the number of points is increased, but also the assembly work is complicated due to this attachment work, and the cost is high.

【0008】 本考案は、上記に鑑みてなしたもので、負圧導入によるダイヤフラム拘束時の ダイヤフラムの撓み形状を、防振特性の保持および耐久性向上の点から最適なも のにして、しかも部品点数および組立に要する手数を削減し、コスト低下を図る ことのできる液体封入式防振装置を提供するものである。The present invention has been made in view of the above, and the deflection shape of the diaphragm when the diaphragm is restrained by the introduction of negative pressure is optimized from the viewpoint of maintaining the vibration damping characteristics and improving the durability. (EN) Provided is a liquid filled type vibration damping device which can reduce the number of parts and the number of steps required for assembling and can reduce the cost.

【0009】[0009]

【課題を解決するための手段】 本考案の第1の液体封入式防振装置は、ゴム等の弾性体よりなる防振基体が室 壁の一部をなす主液室と、各々別のオリフィスを介して前記主液室に連なる複数 のダイヤフラム副液室とを備え、任意のダイヤフラム副液室に隣接する空気室を 、真空圧等の負圧導入と大気圧導入との切替により圧力制御できるように設け、 負圧導入時に該ダイヤフラム副液室のダイヤフラムを拘束状態に保持して防振特 性を切換るようにした防振装置において、上記の課題を解決するために、圧力制 御される空気室に接するダイヤフラムと対向して該空気室を画成する部材は、前 記ダイヤフラムとの対向面側に軸心部を中心に複数のリング状突起を所要間隔に 配設するとともに、これらリング状突起によるダイヤフラムとの対向面がダイヤ フラムの拘束時の形状に略相応するようにその突起高さを変化させ、さらに前記 各間隔部分を圧力制御のための空気給排用の導通孔に連通させてなることを特徴 とする。According to a first liquid-filled type vibration damping device of the present invention, a vibration damping substrate made of an elastic material such as rubber forms a main liquid chamber forming a part of a chamber wall, and a separate orifice. A plurality of diaphragm sub-liquid chambers connected to the main liquid chamber via the air chamber, and the air chamber adjacent to any diaphragm sub-liquid chamber can be pressure controlled by switching between introduction of negative pressure such as vacuum pressure and introduction of atmospheric pressure. In order to solve the above problems, the pressure control is performed in the anti-vibration device in which the diaphragm of the diaphragm sub-liquid chamber is held in a restrained state when the negative pressure is introduced and the anti-vibration property is switched. The member that defines the air chamber in opposition to the diaphragm that is in contact with the air chamber is such that a plurality of ring-shaped protrusions are arranged at required intervals around the shaft center on the surface facing the diaphragm. With diaphragm by ring-shaped protrusion The height of the protrusion is changed so that the facing surface substantially corresponds to the shape of the diaphragm when restrained, and further, each of the gaps is communicated with an air supply / discharge communicating hole for pressure control. And

【0010】 前記の各リング状突起は、空気導通部を有する放射方向の補強リブにより連接 しておくのが好ましい。It is preferable that the ring-shaped projections are connected to each other by a radial reinforcing rib having an air conducting portion.

【0011】 また、本考案の第2の液体封入式防振装置においては、圧力制御される空気室 に接するダイヤフラムと対向して該空気室を画成する部材は、前記ダイヤフラム との対向面をダイヤフラムの拘束時の形状に相応するように凹設するとともに、 該対向面には中央部に開口する空気給排用の導通孔の部分から周辺部に延びる溝 を放射状に形成してなることを特徴とする。Further, in the second liquid-filled type vibration damping device of the present invention, the member that defines the air chamber facing the diaphragm that is in contact with the pressure-controlled air chamber has a surface facing the diaphragm. The diaphragm is recessed so as to correspond to the shape of the diaphragm when restrained, and a groove extending radially from the portion of the air supply / discharge passage hole that opens at the center to the peripheral portion is radially formed on the opposing surface. Characterize.

【0012】[0012]

【作用】[Action]

上記の液体封入式防振装置は、ダイヤフラム副液室に隣接する空気室を、真空 圧等の負圧導入と大気圧導入との切替によって圧力制御することにより、負圧導 入時に該ダイヤフラム副液室のダイヤフラムを拘束状態に保持して防振特性を切 換るようになっている。 The above liquid-filled type vibration damping device controls the pressure in the air chamber adjacent to the diaphragm sub-liquid chamber by switching between introduction of negative pressure such as vacuum pressure and introduction of atmospheric pressure, so that when the negative pressure is introduced, the diaphragm The diaphragm of the liquid chamber is held in a restrained state to switch the vibration damping characteristics.

【0013】 しかして、請求項1の防振装置においては、前記空気室に負圧を導入するのに 伴い、該空気室に接するダイヤフラムが、これと対向して空気室を画成する部材 の側に吸引されて、該部材に有するリング状突起によるダイヤフラムとの対向面 に密着して、拘束状態に保持される。特に、前記リング状突起の高さを変化させ て、前記ダイヤフラムとの対向面を拘束時のダイヤフラムの形状に略相応するよ うに形成してあるので、特性保持上最適な無理のない撓み形状で拘束される。ま た前記リング状突起外の間隔部分が空気給排用の導通孔に連通しているため、ダ イヤフラム全体が略均等に吸引されて確実に前記対向面に密着し、所定の拘束状 態に安定性よく保持される。Therefore, in the vibration isolator according to the first aspect of the present invention, as the negative pressure is introduced into the air chamber, the diaphragm in contact with the air chamber faces the member and defines the air chamber. It is sucked to the side and closely adhered to the surface of the member facing the diaphragm by the ring-shaped projection, and is held in the restrained state. In particular, since the height of the ring-shaped projection is changed and the surface facing the diaphragm is formed so as to substantially correspond to the shape of the diaphragm when restrained, it is possible to obtain a reasonable bending shape that is optimal for maintaining the characteristics. Be detained. In addition, since the space outside the ring-shaped protrusion communicates with the air supply / discharge passage hole, the entire diaphragm is sucked substantially evenly and surely adheres to the facing surface to bring it into a predetermined restraint state. Maintains good stability.

【0014】 また請求項に2の防振装置の場合、前記空気室の負圧導入によって、ダイヤフ ラムが、これと対向して空気室を画成する部材の側に吸引されて、該部材のダイ ヤフラムとの対向面、拘束時のダイヤフラムの形状に相応するように凹設されて いる対向面に密着して、無理のない所定の撓み形状で拘束状態に保持される。し かも前記対向面には中央部の導通孔の開口部分から放射状に多数の溝が形成され ているため、ダイヤフラム全体が略均一に吸引されて対向面に確実に密着して、 所定の拘束状態に安定よく保持される。Further, in the case of the vibration isolator according to claim 2, when the negative pressure is introduced into the air chamber, the diaphragm is sucked toward the member that faces the member and defines the air chamber, and the diaphragm of the member is removed. The surface is closely contacted with the surface facing the diaphragm and the surface recessed so as to correspond to the shape of the diaphragm at the time of restraint, and is held in a restrained state with a reasonably predetermined bending shape. However, since a large number of grooves are formed radially from the opening of the conduction hole in the central part on the facing surface, the entire diaphragm is sucked substantially uniformly and firmly adheres to the facing surface to ensure a predetermined restraint condition. Stable and well retained.

【0015】[0015]

【実施例】【Example】

次に本考案の実施例を図面に基いて説明する。 Next, an embodiment of the present invention will be described with reference to the drawings.

【0016】 図1は本考案を適用した防振装置を例示しており、その基本的構成は図6の防 振装置と殆ど同様であり、次のように構成されている。FIG. 1 illustrates a vibration damping device to which the present invention is applied, and its basic configuration is almost the same as that of the vibration damping device of FIG. 6, and is configured as follows.

【0017】 同図において、(1)は自動車のパワーユニット等の振動源側に連結される部 材、(2)は車体のフレームやシャーシ等の支持側に連結されるケースを兼ねる 筒状部材である。(3)はゴム等の弾性体よりなる厚肉の防振基体であり、前記 振動源側の部材(1)と前記筒状部材(2)とがこの防振基体(3)を介して結 合されている。In the figure, (1) is a member connected to a vibration source side such as a power unit of an automobile, and (2) is a tubular member also serving as a case connected to a supporting side such as a frame or chassis of a vehicle body. is there. (3) is a thick-walled vibration-isolating base made of an elastic body such as rubber, and the vibration source side member (1) and the tubular member (2) are connected via the vibration-proofing base (3). Have been combined.

【0018】 (4)は前記筒状部材(2)の下部側筒部内周に嵌着された仕切部材(4)で あり、この仕切部材(4)と防振基体(3)との間が、液体が充満される主液室 (8)として形成されている。また仕切部材(4)の下側筒部内にはオリフィス 形成用の補助部材(4a)が装着されて、仕切部材(4)に設けられた縦方向の 通路により後述する第2オリフィスを介して主液室(6)と通じる第1オリフィ ス(7)が設けられている。この仕切部材(4)の下側にゴム等よりなるダイヤ フラム(5)が取着されて、前記仕切部材(4)の補助部材(4a)とダイヤフ ラム(5)との間が、前記オリフィス(7)により主液室(6)と連通する第1 のダイヤフラム副液室(8)として形成されている。(9)は通気孔(9a)を 有する底部材(9)で、前記ダイヤフラム(5)とともに取着されている。Reference numeral (4) is a partition member (4) fitted to the inner circumference of the lower side tubular portion of the tubular member (2), and the space between the partition member (4) and the vibration isolating substrate (3). , Is formed as a main liquid chamber (8) filled with liquid. An auxiliary member (4a) for forming an orifice is mounted in the lower tubular portion of the partition member (4), and a vertical passage provided in the partition member (4) allows a main passage through a second orifice described later. A first orifice (7) communicating with the liquid chamber (6) is provided. A diaphragm (5) made of rubber or the like is attached to the lower side of the partition member (4) so that the orifice is provided between the auxiliary member (4a) of the partition member (4) and the diaphragm (5). (7) is formed as a first diaphragm auxiliary liquid chamber (8) communicating with the main liquid chamber (6). (9) is a bottom member (9) having a vent hole (9a), which is attached together with the diaphragm (5).

【0019】 前記仕切部材(4)の主液室(6)側には、前記第1オリフィス(7)より液 体通過抵抗の小さい(断面積の大きい)第2オリフィス(10)を形成する部材 (11)が取着され、このオリフィス形成部材(11)と仕切部材(4)との間 にダイヤフラム(12)が取着されて、主液室(6)と画成される第2のダイヤ フラム副液室(13)が形成されている。また前記のダイヤフラム(12)と仕 切部材(4)との間が空気室(14)として形成されている。したがって、仕切 部材(4)がダイヤフラム(12)と対向して空気室(14)を画成する部材と なる。A member that forms a second orifice (10) having a smaller liquid resistance (larger cross-sectional area) than the first orifice (7) on the main liquid chamber (6) side of the partition member (4). (11) is attached, the diaphragm (12) is attached between the orifice forming member (11) and the partition member (4), and the second diamond is defined as the main liquid chamber (6). A flam sub liquid chamber (13) is formed. An air chamber (14) is formed between the diaphragm (12) and the partition member (4). Therefore, the partition member (4) is a member that faces the diaphragm (12) and defines the air chamber (14).

【0020】 前記空気室(14)は、仕切部材(4)に有する導通孔(15)を介して真空 圧等の負圧と大気圧のいずれかを選択的に導入できるように設けられている。す なわち、負圧導入と大気圧導入の切換機能を有しかつ負圧導入時の空気排出を行 なう吸引手段(17)が、前記の導通孔(15)に接続されており、この負圧導 入と大気圧導入の切換による圧力制御により、例えば負圧導入時にダイヤフラム (22)の動きを拘束して、その防振特性を変化できるようになっている。The air chamber (14) is provided so that either negative pressure such as vacuum pressure or atmospheric pressure can be selectively introduced through a communication hole (15) provided in the partition member (4). .. That is, a suction means (17) having a function of switching between introduction of negative pressure and introduction of atmospheric pressure and discharging air when introducing negative pressure is connected to the above-mentioned conduction hole (15). By controlling the pressure by switching between the introduction of negative pressure and the introduction of atmospheric pressure, for example, the movement of the diaphragm (22) can be restricted when the negative pressure is introduced, and its vibration isolation characteristics can be changed.

【0021】 前記の吸引手段(17)は、例えば本装置をエンジンマウントとして使用する 場合、エンジンの回転信号あるいは停止信号等によって切換え作動されるように 構成される。(18)は空気給排用の管を接続するためのニップル等の管接続部 材である。When the device is used as an engine mount, for example, the suction means (17) is configured to be switched and operated by an engine rotation signal or a stop signal. (18) is a pipe connecting member such as a nipple for connecting a pipe for supplying and discharging air.

【0022】 そして、前記の圧力制御される空気室(14)に接するダイヤフラム(12) と対向して前記空気室(14)を画成する仕切部材(4)は、次のような構成を なしている。The partition member (4) defining the air chamber (14) facing the diaphragm (12) in contact with the pressure-controlled air chamber (14) has the following configuration. ing.

【0023】 図2および図3に示すように、前記ダイヤフラム(12)との対向面(41) 側に軸心部を中心に複数のリング状突起(42)を所要間隔を存して配設すると ともに、これらのリング状突起(42)によるダイヤフラム(12)との対向面 (41)がダイヤフラム(12)の拘束時の形状に相応するように、該リング状 突起(42)の高さを、ダイヤフラム(12)が装着された周辺部から中央部に 向って漸次低くなるように変化させている。この突起高さの変化はダイヤフラム (12)の具有弾性力や特性に応じて設定される。さらにリング状突起(42) 外の前記各間隔部分(43)は、圧力制御のための空気給排用の導通孔(15) に連通させており、空気の給排作用を前記対向面(41)の略全域において行な えるようになっている。このような仕切部材(4)はアルミダイカスト等により 一体に容易に製作できる。As shown in FIG. 2 and FIG. 3, a plurality of ring-shaped protrusions (42) are arranged at required intervals on the side of the surface (41) facing the diaphragm (12) with the axial center as the center. At the same time, the height of the ring-shaped protrusions (42) is adjusted so that the surface (41) of the ring-shaped protrusions (42) facing the diaphragm (12) corresponds to the shape of the diaphragm (12) when restrained. , The diaphragm (12) is gradually lowered from the peripheral part to the central part. This change in projection height is set according to the elastic force and characteristics of the diaphragm (12). Further, each of the space portions (43) outside the ring-shaped projection (42) communicates with a communicating hole (15) for air supply / discharge for pressure control, and the air supply / discharge operation is performed by the facing surface (41). ). Such a partition member (4) can be easily manufactured integrally by aluminum die casting or the like.

【0024】 前記の各リング状突起(42)は、放射方向の補強リブ(44)により連接さ れ補強されている。この補強リブ(44)には、図示するように凹部や孔等によ る周方向の連通部(45)を形成しておき、ダイヤフラム密着時における空気給 排作用を不都合なく行なえるようにする。また各リング状突起(42)にも径方 向の連通部を設けておくことができる。The ring-shaped protrusions (42) are connected and reinforced by radial reinforcing ribs (44). As shown in the drawing, the reinforcing rib (44) is provided with a circumferential communicating portion (45) such as a recess or a hole so that the air supply / exhaust action can be performed without any inconvenience when the diaphragm is in close contact. .. Further, each ring-shaped protrusion (42) may be provided with a communicating portion in the radial direction.

【0025】 上記の防振装置においては、第2のダイヤフラム副液室(13)に隣接する空 気室(14)に大気圧が導入されているとき、ダイヤフラム(12)が平衡状態 (可動状態)にあって、液体の移動が前記の第2オリフィス(10)を通して行 なわれ、断面積の大きい第2オリフィス(10)と平衡状態(可動状態)にある ダイヤフラム(12)とによって決まる周波数で動的ばね定数を最小にすること ができ、これにより例えばアイドリング振動の減衰を効果的になし得る防振特性 を得ることができる。In the above vibration isolator, when atmospheric pressure is introduced into the air chamber (14) adjacent to the second diaphragm sub-liquid chamber (13), the diaphragm (12) is in an equilibrium state (movable state). ), The movement of the liquid is performed through the second orifice (10), and at a frequency determined by the second orifice (10) having a large cross-sectional area and the diaphragm (12) in the equilibrium state (movable state). It is possible to minimize the dynamic spring constant, which makes it possible to obtain, for example, anti-vibration characteristics that can effectively attenuate the idling vibration.

【0026】 また、前記第2のダイヤフラム副液室(13)に接する空気室(14)に真空 圧等の負圧を導入して、ダイヤフラム(12)を吸引して拘束状態に保持するこ とにより、該ダイヤフラム(12)を機能せず、液体の移動が第1のダイヤフラ ム副液室(8)に対してなされ、これにより前記とは防振特性を変化させること ができ、例えばシェイク振動の減衰を効果的になし得る防振特性を得ることがで きる。Further, a negative pressure such as a vacuum pressure is introduced into the air chamber (14) in contact with the second diaphragm sub-liquid chamber (13) to suck the diaphragm (12) and hold it in a restrained state. As a result, the diaphragm (12) does not function, and the liquid is moved to the first diaphragm sub-liquid chamber (8), which makes it possible to change the anti-vibration characteristic from the above, for example, shake vibration. It is possible to obtain anti-vibration characteristics that can effectively reduce the noise.

【0027】 しかして、上記の仕切部材(4)を備えた本考案の場合、空気室(14)に負 圧を導入するのに伴って、ダイヤフラム(12)が、空気室(14)を画成する 仕切部材(4)の側に吸引されて、該仕切部材(4)のリング状突起(42)に よるダイヤフラム(12)との対向面(41)に密着する。この対向面(41) はリング状突起(42)の高さが変化して、拘束時のダイヤフラム(12)の形 状に略相応するように形成してあるので、無理のない好適な撓み形状に保持され て拘束され、その耐久寿命が向上する。However, in the case of the present invention including the partition member (4), the diaphragm (12) defines the air chamber (14) as the negative pressure is introduced into the air chamber (14). It is sucked toward the partition member (4) to be formed and closely adheres to the surface (41) of the partition member (4) facing the diaphragm (12) by the ring-shaped protrusion (42). Since the height of the ring-shaped protrusion (42) is changed and the facing surface (41) is formed so as to substantially correspond to the shape of the diaphragm (12) at the time of restraint, it is possible to flexibly and appropriately bend the surface. It is held and restrained by and is improved in its durable life.

【0028】 また前記リング状突起(42)外の各間隔部分(43)が空気給排用の導通孔 (15)に連通しているため、ダイヤフラム(12)の全体が略均等に吸引され て確実に前記対向面(41)に密着し、所定の拘束状態に安定性よく保持され、 この時の防振特性を安定性よく保持できる。Further, since each space portion (43) outside the ring-shaped protrusion (42) communicates with the air supply / discharge hole (15), the entire diaphragm (12) is sucked substantially uniformly. It firmly adheres to the facing surface (41) and is stably held in a predetermined restrained state, and the vibration-damping property at this time can be stably held.

【0029】 図4および図5は、上記した圧力制御する空気室(14)に隣接するダイヤフ ラム副液室(13)のダイヤフラム(12)と対向して前記空気室(14)を画 成する部材としての仕切部材(4)の他の実施例を示している。4 and 5 define the air chamber (14) facing the diaphragm (12) of the diaphragm sub-liquid chamber (13) adjacent to the pressure-controlled air chamber (14). The other Example of the partition member (4) as a member is shown.

【0030】 この実施例の仕切部材(4)は、ダイヤフラム(12)との対向面(41)を ダイヤフラム(12)の拘束時の形状に相応するように凹設するとともに、該対 向面(41)の中央部に開口する空気給排用の導通孔(15)の開口部からダイ ヤフラム(12)が接合されている周辺部にまだ延びる多数の溝(46)が放射 状に形成されている。この仕切部材(4)もアルミダイカスト等により一体容易 に製作できる。In the partition member (4) of this embodiment, the facing surface (41) with the diaphragm (12) is recessed so as to correspond to the shape of the diaphragm (12) when restrained, and the facing surface (41) A large number of grooves (46) extending radially from the opening of the air supply / exhaust conducting hole (15) opening in the central part of (41) to the peripheral part where the diaphragm (12) is joined are formed radially. There is. This partition member (4) can also be easily manufactured by aluminum die casting or the like.

【0031】 前記の溝(46)は、周辺部から導通孔(15)の開口部に近づくにしたがっ て漸次深くなるように形成しておくのが、空気排出による吸引作用上好ましい。 またこの溝(46)の幅、深さ、本数等は対向面(41)の凹設形状やダイヤフ ラム(12)具有弾性力に応じて、ダイヤフラム(12)が対向面(41)に対 し均等に密接できるように適宜設定できる。The groove (46) is preferably formed so as to be gradually deeper as it approaches the opening of the through hole (15) from the peripheral portion, in terms of the suction action by air discharge. Further, the width, depth, number, etc. of the groove (46) depend on the concave shape of the facing surface (41) and the elastic force of the diaphragm (12), so that the diaphragm (12) faces the facing surface (41). It can be set appropriately so that they can be evenly contacted.

【0032】 この実施例においても、空気室(14)に負圧を導入するのに伴い、ダイヤフ ラム(12)が、空気室(14)を画成する仕切部材(4)の側に吸引されて、 該仕切部材(4)のダイヤフラム(12)との対向面、特に拘束時のダイヤフラ ム(12)の形状に相応するように凹設されている対向面(41)に密着して、 無理のない所定の撓み形状で拘束状態に保持される。特にダイヤフラム(12) の中央部分が導通孔(15)の開口部周辺で先に対向面(41)密着しても、前 記対向面(41)には中央部の導通孔(15)の開口部分から放射状に多数の溝 (46)が形成されているため、ダイヤフラム(12)全体が略均一に吸引され て対向面(41)に確実に密着することとなり、所定の拘束状態に安定よく保持 されることになる。Also in this embodiment, as the negative pressure is introduced into the air chamber (14), the diaphragm (12) is sucked toward the partition member (4) defining the air chamber (14). Then, the partition member (4) is brought into close contact with the facing surface of the diaphragm (12), particularly, the facing surface (41) which is recessed so as to correspond to the shape of the diaphragm (12) at the time of restraining, and is impossible. It is held in a restrained state with a predetermined flexure shape. In particular, even if the central part of the diaphragm (12) comes into close contact with the facing surface (41) around the opening of the conductive hole (15) first, the opening of the conductive hole (15) in the central part is formed on the facing surface (41). Since a large number of grooves (46) are radially formed from the part, the entire diaphragm (12) is sucked substantially uniformly and surely adheres to the facing surface (41), so that the diaphragm (12) is stably held in a predetermined restraint state. Will be done.

【0033】 なお、上記した各実施例においては、圧力制御される空気室に接するダイヤフ ラムと対抗し該空気室を画成する部材が、仕切部材である場合について説明した が、これに限らず、防振基体が室壁の一部をなす主液室と、オリフィスを介して 前記主液室に連なる複数のダイヤフラム副液室とを備え、任意のダイヤフラム副 液室に隣接する空気室の圧力制御により防振特性を切換るようにした液体封入式 防振装置で、圧力制御する空気室に接するダイヤフラムと対向して前記空気室を 画成する部材が他の構成部材である場合にも上記同様にダイヤフラムとの対向面 を形成して実施できる。In each of the above-described embodiments, the case where the member that opposes the diaphragm in contact with the air chamber whose pressure is controlled and defines the air chamber is the partition member has been described, but the present invention is not limited to this. , A main liquid chamber in which the vibration-isolating base body forms a part of the chamber wall, and a plurality of diaphragm sub-liquid chambers connected to the main liquid chamber via orifices, and the pressure of the air chamber adjacent to any diaphragm sub-liquid chamber In a liquid-filled type vibration control device whose vibration control characteristics are switched by control, even if the member that defines the air chamber facing the diaphragm in contact with the pressure controlled air chamber is another component, Similarly, it can be implemented by forming a surface facing the diaphragm.

【0034】[0034]

【考案の効果】[Effect of the device]

上記したように本考案によれば、空気室に負圧を導入するのに伴って、ダイヤ フラムを、空気室を画成する部材に全面にわたって略均等一に密接させることが できて、拘束状態に確実に安定性よく保持できるとともに、無理なく最適な撓み 形状を得ることができ、拘束時の防振特性を好適に保持でき、しかもダイヤフラ ムの耐久性を向上できる。 As described above, according to the present invention, as the negative pressure is introduced into the air chamber, the diaphragm can be brought into close even contact with the member defining the air chamber over the entire surface, and the restrained state can be achieved. In addition, it is possible to reliably and stably maintain the optimum flexural shape without difficulty, and it is possible to suitably maintain the vibration-proof characteristics when restrained, and the durability of the diaphragm can be improved.

【0035】 しかもダイヤフラム拘束時の形状規制のための別の拘束板等を必要としないの で、部品点数が少なく、組立に要する手数を削減でき、以て液体封入式の防振装 置の大量生産を可能にし、コスト低下にも寄与できる等、実用上優れた効果を奏 する。Moreover, since another restraint plate or the like for regulating the shape at the time of restraining the diaphragm is not required, the number of parts is small and the labor required for assembling can be reduced, so that a large number of liquid-filled type vibration damping devices can be obtained. It has excellent practical effects such as enabling production and contributing to cost reduction.

【図面の簡単な説明】[Brief description of drawings]

【図1】本考案の1実施例を示す液体封入式防振装置の
縦断面図である。
FIG. 1 is a vertical sectional view of a liquid-filled type vibration damping device according to an embodiment of the present invention.

【図2】同上の防振装置において空気室を画成する部材
として使用される仕切部材を示す周辺部を省略した斜視
図である。
FIG. 2 is a perspective view showing a partition member used as a member that defines an air chamber in the vibration isolator, with a peripheral portion omitted.

【図3】同上の縦断面図である。FIG. 3 is a vertical sectional view of the above.

【図4】他の実施例の空気室を画成する部材として使用
される仕切部材を示す周辺部を省略した斜視図である。
FIG. 4 is a perspective view showing a partition member used as a member that defines an air chamber of another embodiment, with a peripheral portion omitted.

【図5】同上の縦断面図である。FIG. 5 is a vertical sectional view of the above.

【図6】拘束板を付設した液体封入式防振装置の1例を
示す縦断面図である。
FIG. 6 is a vertical sectional view showing an example of a liquid-filled type vibration damping device provided with a restraint plate.

【符号の説明】[Explanation of symbols]

(1) 部材 (2) 筒状部材 (3) 防振基体 (4) 仕切部材 (41) 空気室の画成面 (42) リング状突起 (43) 間隔部分 (44) 溝 (5) ダイヤフラム (6) 主液室 (7) 第1オリフィス (8) 第1のダイヤフラム副液室 (10) 第2オリフィス (11) オリフィス形成部材 (12) ダイヤフラム (13) 第2のダイヤフラム副液室 (14) 空気室 (15) 導通孔 (1) Member (2) Cylindrical member (3) Anti-vibration substrate (4) Partition member (41) Air chamber defining surface (42) Ring-shaped projection (43) Spacing portion (44) Groove (5) Diaphragm ( 6) Main liquid chamber (7) First orifice (8) First diaphragm auxiliary liquid chamber (10) Second orifice (11) Orifice forming member (12) Diaphragm (13) Second diaphragm auxiliary liquid chamber (14) Air chamber (15) Conduction hole

フロントページの続き (72)考案者 竹内 啓祐 愛知県豊田市トヨタ町1番地 トヨタ自動 車株式会社内 (72)考案者 鈴木 順一 愛知県豊田市和会町道上10番地 豊生ブレ ーキ工業株式会社内 (72)考案者 三岡 直躬 愛知県豊田市和会町道上10番地 豊生ブレ ーキ工業株式会社内 (72)考案者 柴山 俊之 愛知県西加茂郡三好町大字打越字生賀山3 番地 東洋ゴム工業株式会社自動車部品技 術センター内 (72)考案者 有馬 道儀 愛知県西加茂郡三好町大字打越字生賀山3 番地 東洋ゴム工業株式会社自動車部品技 術センター内Front page continued (72) Inventor Keisuke Takeuchi 1 Toyota-cho, Toyota City, Aichi Prefecture Toyota Motor Co., Ltd. (72) Inventor Junichi Suzuki 10-way, Wakaicho, Toyota-shi, Aichi Hosei Brake Industry Co., Ltd. (72) Inventor Naomi Mioka, No. 10 Wagamicho Michigami, Toyota City, Aichi Prefecture, Hosei Blake Industrial Co., Ltd. Rubber Industry Co., Ltd. Automotive Parts Technology Center (72) Inventor Arima Dori Arima, Miyoshi-cho, Nishikamo-gun Aichi Prefecture, Uchikoshi, No. 3 Igayama Toyo Tire & Rubber Co., Ltd. Automotive Parts Technology Center

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 ゴム等の弾性体よりなる防振基体が室壁
の一部をなす主液室と、各々別のオリフィスを介して前
記主液室に連なる複数のダイヤフラム副液室とを備え、
任意のダイヤフラム副液室に隣接する空気室を、真空圧
等の負圧導入と大気圧導入との切替により圧力制御でき
るように設け、負圧導入時に該ダイヤフラム副液室のダ
イヤフラムを拘束状態に保持して防振特性を切換るよう
にした防振装置において、 圧力制御される空気室に接するダイヤフラムと対向して
該空気室を画成する部材は、前記ダイヤフラムとの対向
面側に軸心部を中心に複数のリング状突起を所要間隔に
配設するとともに、これらリング状突起によるダイヤフ
ラムとの対向面がダイヤフラムの拘束時の形状に略相応
するようにその突起高さを変化させ、さらに前記各間隔
部分を圧力制御のための空気給排用の導通孔に連通させ
てなることを特徴とする液体封入式防振装置。
1. A vibration damping substrate made of an elastic material such as rubber comprises a main liquid chamber forming a part of a chamber wall, and a plurality of diaphragm sub liquid chambers connected to the main liquid chamber via separate orifices. ,
An air chamber adjacent to an arbitrary diaphragm sub-liquid chamber is provided so that the pressure can be controlled by switching between negative pressure introduction such as vacuum pressure and atmospheric pressure introduction, and the diaphragm of the diaphragm sub-liquid chamber is restrained when negative pressure is introduced. In an anti-vibration device that holds and switches the anti-vibration characteristics, the member that defines the air chamber facing the diaphragm that is in contact with the pressure-controlled air chamber has an axial center on the surface facing the diaphragm. A plurality of ring-shaped projections are arranged at required intervals around the portion, and the height of the projections is changed so that the surface of the ring-shaped projections facing the diaphragm substantially corresponds to the shape of the diaphragm when restrained. A liquid-filled type vibration damping device, characterized in that the respective space portions are communicated with air supply / discharge conducting holes for pressure control.
【請求項2】 ゴム等の弾性体よりなる防振基体が室壁
の一部をなす主液室と、各々別のオリフィスを介して前
記主液室に連なる複数のダイヤフラム副液室とを備え、
任意のダイヤフラム副液室に隣接する空気室を、真空圧
等の負圧導入と大気圧導入との切替により圧力制御でき
るように設け、負圧導入時に該ダイヤフラム副液室のダ
イヤフラムを拘束状態に保持して防振特性を切換るよう
にした防振装置において、 圧力制御される空気室に接するダイヤフラムと対向して
該空気室を画成する部材は、前記ダイヤフラムとの対向
面をダイヤフラムの拘束時の形状に相応するように凹設
するとともに、該対向面には中央部に開口する空気給排
用の導通孔の部分から周辺部に延びる溝を放射状に形成
してなることを特徴とする液体封入式防振装置。
2. A vibration damping substrate made of an elastic material such as rubber is provided with a main liquid chamber forming a part of a chamber wall, and a plurality of diaphragm sub liquid chambers connected to the main liquid chamber via separate orifices. ,
An air chamber adjacent to an arbitrary diaphragm sub-liquid chamber is provided so that the pressure can be controlled by switching between negative pressure introduction such as vacuum pressure and atmospheric pressure introduction, and the diaphragm of the diaphragm sub-liquid chamber is restrained when negative pressure is introduced. In an anti-vibration device for holding and switching the anti-vibration characteristics, a member that defines the air chamber facing a diaphragm that is in contact with an air chamber whose pressure is controlled is such that the surface facing the diaphragm is restrained by the diaphragm. It is characterized in that it is recessed so as to correspond to the shape at the time, and that a groove extending radially from the portion of the conduction hole for air supply and exhaust opening in the central portion to the peripheral portion is radially formed in the facing surface. Liquid-filled anti-vibration device.
JP7658291U 1991-09-24 1991-09-24 Liquid-filled anti-vibration device Withdrawn JPH0527380U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7658291U JPH0527380U (en) 1991-09-24 1991-09-24 Liquid-filled anti-vibration device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7658291U JPH0527380U (en) 1991-09-24 1991-09-24 Liquid-filled anti-vibration device

Publications (1)

Publication Number Publication Date
JPH0527380U true JPH0527380U (en) 1993-04-09

Family

ID=13609280

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7658291U Withdrawn JPH0527380U (en) 1991-09-24 1991-09-24 Liquid-filled anti-vibration device

Country Status (1)

Country Link
JP (1) JPH0527380U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001096760A1 (en) * 2000-06-16 2001-12-20 Toyo Tire & Rubber Co., Ltd. Control type liquid seal vibration control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001096760A1 (en) * 2000-06-16 2001-12-20 Toyo Tire & Rubber Co., Ltd. Control type liquid seal vibration control device

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Effective date: 19951130