JP7005365B2 - Liquid encapsulation mount device - Google Patents

Liquid encapsulation mount device Download PDF

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JP7005365B2
JP7005365B2 JP2018013628A JP2018013628A JP7005365B2 JP 7005365 B2 JP7005365 B2 JP 7005365B2 JP 2018013628 A JP2018013628 A JP 2018013628A JP 2018013628 A JP2018013628 A JP 2018013628A JP 7005365 B2 JP7005365 B2 JP 7005365B2
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liquid
communication opening
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opening
liquid chamber
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JP2019132320A (en
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敏廣 平尾
直人 矢吹
武 莊司
勝 小暮
正容 齊藤
真介 中野
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Subaru Corp
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Description

本発明は、液体封入マウント装置、特に、車両用エンジンを車体に搭載するのに好適な液体封入マウント装置に関する。 The present invention relates to a liquid-filled mount device, particularly a liquid-filled mount device suitable for mounting a vehicle engine on a vehicle body.

車両用エンジンと車体の間に介装される液体封入マウント装置では、区画された第1液室及び第2液室に液体を封入すると共に、第1液室と第2液室の間に減衰流路を形成して構成される。これら第1液室及び第2液室の少なくとも一方は弾性変形可能な構成とされ、エンジンと車体が相対変位を生じた場合に、封入された液体が減衰流路を流動する際、振動入力が減衰されるようになっている。こうした液体封入マウント装置は、実に多様なものが開発されている中で、エンジンマウント用の液体封入マウント装置としては、例えば、下記特許文献1に記載されるものがある。この液体封入マウント装置では、第1液室と第2液室の間の仕切り板に両液室を連通する開口を形成し、この開口内に弾性変形可能な弾性板を配設し、この弾性板と開口の内縁の間に減衰流路を形成している。この液体封入マウント装置では、第1液室と第2液室間の差圧が大きくなると、弾性板の端部が仕切り板の開口から何れかの液室側に突出し、これにより弾性板と開口の間の減衰流路の断面積が著しく拡大するので、大振動(大荷重)入力時の内圧低下に伴うキャビテーションパルスの発生を防止することができる。 In the liquid filling mount device interposed between the vehicle engine and the vehicle body, the liquid is filled in the partitioned first liquid chamber and the second liquid chamber, and the liquid is attenuated between the first liquid chamber and the second liquid chamber. It is configured by forming a flow path. At least one of the first liquid chamber and the second liquid chamber is configured to be elastically deformable, and when the engine and the vehicle body are displaced relative to each other, the vibration input is input when the enclosed liquid flows through the damping flow path. It is designed to be attenuated. While a wide variety of such liquid-filled mount devices have been developed, for example, the liquid-filled mount device for engine mounting is described in Patent Document 1 below. In this liquid encapsulation mounting device, an opening for communicating both liquid chambers is formed in the partition plate between the first liquid chamber and the second liquid chamber, and an elastic plate that can be elastically deformed is arranged in the opening, and this elasticity is provided. A damping flow path is formed between the plate and the inner edge of the opening. In this liquid filling mount device, when the differential pressure between the first liquid chamber and the second liquid chamber becomes large, the end of the elastic plate protrudes from the opening of the partition plate toward either liquid chamber, thereby opening the elastic plate and the opening. Since the cross-sectional area of the damping flow path between the two is significantly expanded, it is possible to prevent the generation of a cavitation pulse due to a decrease in the internal pressure at the time of inputting a large vibration (large load).

特開2010-112458号公報Japanese Unexamined Patent Publication No. 2010-11458

しかしながら、上記特許文献1に記載される液体封入マウント装置は、大振動入力時のキャビテーションパルスの発生を防止することを主眼とするものであるのに対し、実際のエンジンマウント用の液体封入マウント装置では、走行速度や路面状態により、バネ定数とエンジン重量で決まる固有振動数でエンジンが共振することによる特定の振動ピークを低減することが重要である。そのためには、液体封入マウント装置による振動入力に対する減衰特性を細かく設定できる構造が必要となるが、そうした構造を有する液体封入マウント装置は未だ十分に開発されていない。 However, while the liquid-filled mount device described in Patent Document 1 is mainly intended to prevent the generation of a cavitation pulse at the time of inputting a large vibration, the liquid-filled mount device for an actual engine mount is a liquid-filled mount device. Then, it is important to reduce a specific vibration peak due to the engine resonating at the natural frequency determined by the spring constant and the engine weight depending on the traveling speed and the road surface condition. For that purpose, a structure that can finely set the damping characteristics for the vibration input by the liquid filling mount device is required, but the liquid filling mount device having such a structure has not been sufficiently developed yet.

本発明は、上記課題に鑑みてなされたものであり、その目的は、減衰特性を細かく設定することが可能な液体封入マウント装置を提供することにある。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a liquid-filled mount device capable of finely setting the damping characteristics.

上記目的を達成するための液体封入マウント装置は、
減衰流路を介して連結され、夫々液体が封入された第1液室及び第2液室を有し、それら液室の少なくとも一方が弾性変形可能に構成された液体封入マウント装置において、前記第1液室及び第2液室の間に両液室を仕切るように形成され且つ第1液室とも第2液室とも区画された中間室と、前記中間室と第1液室との区画部に形成され、該中間室と第1液室とを連通する第1連通開口部と、前記中間室と第2液室との区画部に形成され、該中間室と第2液室とを連通する第2連通開口部と、前記中間室の内部に設けられ、前記第1連通開口部及び第2連通開口部から流入する前記液体によって揺動し、前記第1連通開口部からの液体流入時には前記第2連通開口部の少なくとも一部及び前記第2連通開口部からの液体流入時には前記第1連通開口部の少なくとも一部の少なくとも一方を閉塞する揺動部材とを備えたことを特徴とする。
The liquid filling mount device for achieving the above purpose is
In a liquid encapsulation mount device which is connected via a decay flow path and has a first liquid chamber and a second liquid chamber, each of which is filled with a liquid, and at least one of the liquid chambers is configured to be elastically deformable. An intermediate chamber formed so as to partition both liquid chambers between the first liquid chamber and the second liquid chamber and partitioned into both the first liquid chamber and the second liquid chamber, and a partition between the intermediate chamber and the first liquid chamber. It is formed in the first communication opening that communicates the intermediate chamber and the first liquid chamber, and the partition portion between the intermediate chamber and the second liquid chamber, and communicates the intermediate chamber and the second liquid chamber. When the liquid flows in from the first communication opening and the liquid flowing from the first communication opening and the second communication opening, which is provided inside the intermediate chamber and the second communication opening. It is characterized by including a rocking member that closes at least a part of the second communication opening and at least one of the first communication opening when a liquid flows in from the second communication opening. ..

この構成によれば、第1連通開口部及び第2連通開口部の形成位置や大きさといった開口状態、或いは揺動部材の揺動動作の規制状態を種々に変更することによって、揺動部材による第2連通開口部閉塞状態及び第1連通開口部閉塞状態を種々に調整することができ、これにより第1連通開口部又は第2連通開口部から中間室を経て第2連通開口部又は第1連通開口部に流動する液体の流動状態、即ち減衰特性を種々に設定することができるので、例えば圧縮方向と伸長方向とで振動入力に対する減衰特性を変えることができるといったように、マウント装置の減衰特性を細かく設定することが可能となる。 According to this configuration, the swing member can be used by variously changing the opening state such as the formation position and size of the first communication opening and the second communication opening, or the regulation state of the swing operation of the swing member. The closed state of the second communication opening and the closed state of the first communication opening can be adjusted in various ways, whereby the first communication opening or the second communication opening can be passed through the intermediate chamber to the second communication opening or the first communication opening. Since the flow state of the liquid flowing in the communication opening, that is, the damping characteristics can be set in various ways, the damping characteristics for the vibration input can be changed between the compression direction and the expansion direction, for example, the damping of the mounting device. It is possible to set the characteristics in detail.

また、前記揺動部材が膜体であり、前記第1連通開口部から流入する液体によって前記膜体が揺動する場合と前記第2連通開口部から流入する液体によって前記膜体が揺動する場合とで、該膜体による前記第1連通開口部の閉塞面積と前記第2連通開口部の閉塞面積とが異なるように前記第1連通開口部及び第2連通開口部の開口状態が設定されて構成されたことを特徴とする。 Further , the rocking member is a film body, and the film body swings due to the liquid flowing from the first communication opening and the liquid flowing from the second communication opening. In some cases, the opening states of the first communication opening and the second communication opening are set so that the closed area of the first communication opening and the closing area of the second communication opening by the film body are different. It is characterized by being composed of.

この構成によれば、揺動部材が膜体からなり、第1連通開口部及び第2連通開口部の形成位置及び大きさといった開口状態を適宜設定することにより、第1連通開口部から液体が流入する場合と第2連通開口部から液体が流入する場合とで膜体による第1連通開口部閉塞面積と第2連通開口部閉塞面積とが異なるものとしたので、例えば圧縮方向と伸長方向とで振動入力に対する減衰特性を変えることができ、これによりマウント装置の減衰特性を細かく設定することができる。 According to this configuration, the rocking member is made of a film body, and by appropriately setting the opening state such as the formation position and size of the first communication opening and the second communication opening, the liquid can be discharged from the first communication opening. Since the closed area of the first communication opening and the closing area of the second communication opening by the membrane body are different depending on whether the liquid flows in or out from the second communication opening, for example, the compression direction and the extension direction. The damping characteristics for the vibration input can be changed with, which allows the damping characteristics of the mounting device to be finely set.

また、前記揺動部材が膜体であり、前記第1連通開口部から流入する液体によって前記膜体が揺動する場合と前記第2連通開口部から流入する液体によって前記膜体が揺動する場合とで、該膜体による前記第1連通開口部の閉塞面積と前記第2連通開口部の閉塞面積とが異なるように前記膜体の揺動動作を規制する規制部を備えたことを特徴とする。 Further , the rocking member is a film body, and the film body swings due to the liquid flowing from the first communication opening and the liquid flowing from the second communication opening. In some cases, the membrane is provided with a regulating portion that regulates the swinging motion of the membrane so that the closed area of the first communication opening and the closed area of the second communication opening are different from each other. And.

この構成によれば、揺動部材が膜体からなり、膜体の揺動動作を規制する規制部により、第1連通開口部から液体が流入する場合と第2連通開口部から液体が流入する場合とで膜体による第1連通開口部閉塞面積と第2連通開口部閉塞面積とが異なるものとしたので、例えば圧縮方向と伸長方向とで振動入力に対する減衰特性を変えることができ、これによりマウント装置の減衰特性を細かく設定することができる。 According to this configuration, the rocking member is made of a film body, and the liquid flows in from the first communication opening and the liquid flows in from the second communication opening by the regulating portion that regulates the swinging operation of the film body. Since the closed area of the first communication opening and the closed area of the second communication opening due to the membrane body are different depending on the case, for example, the damping characteristics with respect to the vibration input can be changed in the compression direction and the expansion direction. The damping characteristics of the mounting device can be set in detail.

また、前記膜体は、前記第1連通開口部及び第2連通開口部の何れか一方からの液体流入時に前記第2連通開口部又は第1連通開口部を完全に閉塞することを特徴とする。
Further , the membrane body is characterized in that the second communication opening or the first communication opening is completely closed when the liquid flows in from either the first communication opening or the second communication opening. ..

この構成によれば、膜体によって第2連通開口部又は第1連通開口部が完全に閉塞されるときに大きな減衰力を発現することが可能となり、その分だけ、マウント装置の減衰特性を細かく設定することができる。 According to this configuration, it is possible to exert a large damping force when the second communication opening or the first communication opening is completely closed by the membrane body, and the damping characteristics of the mounting device can be made finer by that amount. Can be set.

以上説明したように、本発明によれば、第1連通開口部及び第2連通開口部の開口状態、或いは揺動部材の揺動動作の揺動規制状態を種々に変更することによって、閉塞構造における第2開口部閉塞状態及び第1開口部閉塞状態を種々に調整することができ、これにより第1連通開口部又は第2連通開口部から中間室を経て第2連通開口部又は第1連通開口部に流動する液体の流動状態、即ち減衰特性を種々に設定することができるので、例えば圧縮方向と伸長方向とで振動入力に対する減衰特性を変えることができるといったように、マウント装置の減衰特性を細かく設定することが可能となる。従って、エンジンを車体にマウントする場合には、エンジンの固有振動数に伴う振動ピークを低減することが可能となる。 As described above, according to the present invention, the closed structure is formed by variously changing the opening state of the first communication opening and the second communication opening, or the swing restricting state of the swing operation of the swing member. The closed state of the second opening and the closed state of the first opening can be adjusted in various ways, whereby the first communication opening or the second communication opening can be passed through the intermediate chamber to the second communication opening or the first communication. Since the flow state of the liquid flowing in the opening, that is, the damping characteristics can be set in various ways, the damping characteristics of the mounting device can be changed, for example, in the compression direction and the expansion direction. Can be set in detail. Therefore, when the engine is mounted on the vehicle body, it is possible to reduce the vibration peak associated with the natural frequency of the engine.

本発明の液体封入マウント装置の第1の実施の形態を示す断面図である。It is sectional drawing which shows 1st Embodiment of the liquid filling mounting apparatus of this invention. 図1の液体封入マウント装置の閉塞構造の説明図である。It is explanatory drawing of the closing structure of the liquid filling mounting apparatus of FIG. 図1の液体封入マウント装置の閉塞構造の変形例の説明図である。It is explanatory drawing of the modification of the closed structure of the liquid filling mounting apparatus of FIG. 本発明の液体封入マウント装置の第2の実施の形態を示す断面図である。It is sectional drawing which shows the 2nd Embodiment of the liquid filling mounting apparatus of this invention. 図4の液体封入マウント装置の閉塞構造の説明図である。It is explanatory drawing of the closing structure of the liquid filling mounting apparatus of FIG. 本発明の液体封入マウント装置の第3の実施の形態を示す断面図である。It is sectional drawing which shows the 3rd Embodiment of the liquid filling mounting apparatus of this invention. 図6の液体封入マウント装置の閉塞構造の説明図である。It is explanatory drawing of the closing structure of the liquid filling mounting apparatus of FIG. 図6の液体封入マウント装置の閉塞構造の変形例の説明図である。It is explanatory drawing of the modification of the closed structure of the liquid filling mounting apparatus of FIG.

以下に、本発明の液体封入マウント装置の実施の形態について図面を参照して詳細に説明する。図1は、本発明の液体封入マウント装置の第1の実施の形態を示す断面図である。この液体封入マウント装置は、例えば、振動源となるエンジンに連結される例えば略逆円錐台形状の第1取付部材10と、車体に連結される略円筒形状の第2取付部材12を有する。これら第1取付部材10及び第2取付部材12は、例えば共に金属製であり、第1取付部材10は図の上方に、第2取付部材12は、第1取付部材10と同心状態で図の下方に配置される。この第1取付部材10と第2取付部材12は、第2取付部材12の第1取付部材10側開口部、つまり図示上側開口部を閉塞するようにして、内部が中空の円錐台形状のインシュレータ14によって連結されている。このインシュレータ14は、例えばゴムなどの弾性材料で構成され、第1取付部材10及び第2取付部材12を液密に連結している。また、第2取付部材12の第1取付部材10と反対側の開口部、つまり図示下側開口部は、比較的薄膜のダイヤフラム16で閉塞されている。このダイヤフラム16も、例えばゴムなどの弾性材料で構成され、第2取付部材12の図示下方開口部を液密に閉塞している。なお、ダイヤフラム16の外周には金属製のリング部材18が取付けられており、第2取付部材12の下端部をリング部材18側に加締めることでダイヤフラム16が第2取付部材12の図示下側開口部を閉塞している。 Hereinafter, embodiments of the liquid-filled mounting device of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing a first embodiment of the liquid filling mount device of the present invention. This liquid-filled mounting device has, for example, a substantially inverted truncated cone-shaped first mounting member 10 connected to an engine serving as a vibration source, and a substantially cylindrical second mounting member 12 connected to a vehicle body. The first mounting member 10 and the second mounting member 12 are both made of metal, for example, and the first mounting member 10 is in the upper part of the figure, and the second mounting member 12 is concentric with the first mounting member 10 in the figure. Placed below. The first mounting member 10 and the second mounting member 12 are a truncated cone-shaped insulator having a hollow inside so as to close the opening on the first mounting member 10 side of the second mounting member 12, that is, the upper opening shown in the drawing. It is connected by 14. The insulator 14 is made of an elastic material such as rubber, and the first mounting member 10 and the second mounting member 12 are liquid-tightly connected. Further, the opening on the side opposite to the first mounting member 10 of the second mounting member 12, that is, the lower opening in the drawing is closed by the diaphragm 16 of a relatively thin film. The diaphragm 16 is also made of an elastic material such as rubber, and tightly closes the illustrated lower opening of the second mounting member 12. A metal ring member 18 is attached to the outer periphery of the diaphragm 16, and the diaphragm 16 is attached to the lower side of the second attachment member 12 by crimping the lower end portion of the second attachment member 12 toward the ring member 18. The opening is closed.

これにより、インシュレータ14とダイヤフラム16の間には、内部空間が形成されるが、この内部空間は例えば樹脂製又は金属製円形厚板状の仕切り部材20によって図示上下に仕切られ、仕切り部材20より図の上方に第1液室22が、図の下方に第2液室24が、夫々、区画形成されている。これら区画された第1液室22及び第2液室24には液体が封入され、円形厚板形状の仕切り部材20の外周部には、第1液室22及び第2液室24に連通するオリフィスなどの減衰流路26が形成されている。この実施の形態では、弾性材料からなるインシュレータ14によって第1液室22が囲繞され、同じく弾性材料からなるダイヤフラム16によって第2液室24が囲繞されているため、第1液室22及び第2液室24が共に弾性変形する。従って、例えば第1取付部材10がエンジンに連結され、第2取付部材12が車体に連結され、振動入力によってエンジンと車体に相対変位が生じると、内部に封入された液体が減衰流路26を流動し、その流動に伴って振動入力が減衰される。この減衰流路26は、例えば突起乗り越え時などの大振動入力に対して、主要な減衰特性を発現するためのものである。ここでは、第1液室22内から第2液室24側に液体が流動する場合を圧縮側、第2液室24内から第1液室22側に液体が流動する場合を伸長側とも示す。 As a result, an internal space is formed between the insulator 14 and the diaphragm 16, and the internal space is partitioned vertically by, for example, a resin or metal circular thick plate-shaped partition member 20 from the partition member 20. The first liquid chamber 22 is formed in the upper part of the figure, and the second liquid chamber 24 is formed in the lower part of the figure. Liquid is sealed in the first liquid chamber 22 and the second liquid chamber 24 which are partitioned, and the outer peripheral portion of the circular plate-shaped partition member 20 communicates with the first liquid chamber 22 and the second liquid chamber 24. A damping flow path 26 such as an orifice is formed. In this embodiment, the first liquid chamber 22 is surrounded by an insulator 14 made of an elastic material, and the second liquid chamber 24 is surrounded by a diaphragm 16 also made of an elastic material, so that the first liquid chamber 22 and the second liquid chamber 22 are surrounded. Both liquid chambers 24 are elastically deformed. Therefore, for example, when the first mounting member 10 is connected to the engine, the second mounting member 12 is connected to the vehicle body, and a relative displacement occurs between the engine and the vehicle body due to the vibration input, the liquid sealed inside causes the damping flow path 26. It flows, and the vibration input is attenuated with the flow. The damping flow path 26 is for exhibiting a main damping characteristic with respect to a large vibration input such as when overcoming a protrusion. Here, the case where the liquid flows from the inside of the first liquid chamber 22 to the second liquid chamber 24 side is shown as the compression side, and the case where the liquid flows from the inside of the second liquid chamber 24 to the first liquid chamber 22 side is shown as the extension side. ..

この仕切り部材20の径方向中央部で且つ厚さ方向中央部、つまり第1液室22と第2液室24の間には、第1液室22とも第2液室24とも区画された例えば四角柱空間形状の中間室28が形成されている。この中間室28は、高さ(厚さ)が比較的小さい。ここでは、中間室28よりも図示上側に形成された仕切り部材20の第1区画壁31が第1液室22と中間室28の区画部を構成し、中間室28よりも図示下側に形成された仕切り部材20の第2区画壁33が第2液室24と中間室28の区画部を構成する。また、この中間室28の高さ(厚さ)方向中央部には、揺動部材を構成する膜体(メンブレン)30が図の右壁部から突設されている。この実施の形態の揺動部材は、例えば中間室28の図示左右方向寸法の半分よりも少し長い長さを有する例えば平面視方形の膜体30で構成される。この膜体30は、例えばゴムなどの弾性及び可撓性を有する材料からなり、揺動部材として、主として図の上下方向に揺動する。 For example, both the first liquid chamber 22 and the second liquid chamber 24 are partitioned between the first liquid chamber 22 and the second liquid chamber 24 at the radial center portion and the thickness direction central portion of the partition member 20. An intermediate chamber 28 having a square pillar space shape is formed. The height (thickness) of the intermediate chamber 28 is relatively small. Here, the first partition wall 31 of the partition member 20 formed on the upper side of the intermediate chamber 28 constitutes the compartments of the first liquid chamber 22 and the intermediate chamber 28, and is formed on the lower side of the intermediate chamber 28 in the drawing. The second partition wall 33 of the partitioned member 20 constitutes the partition between the second liquid chamber 24 and the intermediate chamber 28. Further, in the central portion of the intermediate chamber 28 in the height (thickness) direction, a membrane 30 constituting the swing member is projected from the right wall portion in the figure. The rocking member of this embodiment is composed of, for example, a plan-viewing rectangular film body 30 having a length slightly longer than half of the illustrated left-right dimension of the intermediate chamber 28. The film body 30 is made of an elastic and flexible material such as rubber, and swings mainly in the vertical direction in the figure as a swing member.

そして、中間室28を第1液室22から区画する第1区画壁31には、第1液室22と中間室28を連通する第1連通開口部32が形成され、中間室28と第2液室24から区画する第2区画壁33には、第2液室24と中間室28を連通する第2連通開口部34が形成されている。この第1連通開口部32及び第2連通開口部34の開口状態、つまり形成位置や大きさ、形状は、後述するように、種々に設定することが可能であるが、原則として、第1液室22内の液体が第1連通開口部32から中間室28に流れ込んだ場合には膜体30からなる揺動部材が第2区画壁33側、つまり第2連通開口部34側に揺動し、第2液室24内の液体が第2連通開口部34から中間室28に流れ込んだ場合には膜体30からなる揺動部材が第1区画壁31側、つまり第1連通開口部32側に揺動するように設定する。この実施の形態では、第1区画壁31の図示右寄りに比較的開口面積の小さい第1連通開口部32を2個開設し、第2区画壁33の図示左寄りに比較的開口面積の大きい第2連通開口部34を1個開設している。後述するように、これら第1連通開口部32及び第2連通開口部34は、膜体30からなる揺動部材が第2連通開口部34又は第1連通開口部32から流れ込む液体によって揺動することで少なくとも一部が閉塞される(閉塞されない場合もある)。 A first communication opening 32 that connects the first liquid chamber 22 and the intermediate chamber 28 is formed in the first partition wall 31 that partitions the intermediate chamber 28 from the first liquid chamber 22, and the intermediate chamber 28 and the second are formed. The second partition wall 33 that partitions from the liquid chamber 24 is formed with a second communication opening 34 that communicates the second liquid chamber 24 and the intermediate chamber 28. The opening states of the first communication opening 32 and the second communication opening 34, that is, the formation position, size, and shape can be variously set as described later, but in principle, the first liquid When the liquid in the chamber 22 flows from the first communication opening 32 into the intermediate chamber 28, the rocking member made of the film body 30 swings toward the second partition wall 33, that is, toward the second communication opening 34. When the liquid in the second liquid chamber 24 flows from the second communication opening 34 into the intermediate chamber 28, the rocking member made of the film body 30 is on the first partition wall 31 side, that is, on the first communication opening 32 side. Set to swing to. In this embodiment, two first communication openings 32 having a relatively small opening area are opened on the right side of the drawing of the first partition wall 31, and a second communication opening 32 having a relatively large opening area is opened on the left side of the drawing of the second partition wall 33. One communication opening 34 is opened. As will be described later, the first communication opening 32 and the second communication opening 34 are shaken by the liquid in which the swing member made of the film body 30 flows from the second communication opening 34 or the first communication opening 32. This will block at least part of it (it may not be blocked).

図2は、図1の中間室28、膜体(揺動部材)30、第1連通開口部32(第1区画壁31)、第2連通開口部34(第2区画壁33)を抽出した作用の説明図である。何れも、図の上方が第1液室22、図の下方が第2液室24に相当する。第1液室22と第2液室24の液体に差圧がない場合、つまり第1液室22及び第2液室24間で液体の流動がない場合、図2(A)に示すように、膜体30からなる揺動部材は自己復元力によって中間室28の高さ(厚さ)方向中央部に浮いた状態となり、第1区画壁31の第1連通開口部32も第2区画壁33の第2連通開口部34も全開口面積が開口している。 FIG. 2 extracts the intermediate chamber 28, the membrane body (oscillating member) 30, the first communication opening 32 (first communication wall 31), and the second communication opening 34 (second partition wall 33) of FIG. It is explanatory drawing of the action. In each case, the upper part of the figure corresponds to the first liquid chamber 22, and the lower part of the figure corresponds to the second liquid chamber 24. As shown in FIG. 2A, when there is no differential pressure between the liquids in the first liquid chamber 22 and the second liquid chamber 24, that is, when there is no liquid flow between the first liquid chamber 22 and the second liquid chamber 24. The rocking member made of the film body 30 floats in the central portion in the height (thickness) direction of the intermediate chamber 28 due to the self-restoring force, and the first communication opening 32 of the first partition wall 31 is also the second partition wall. The second communication opening 34 of 33 also has an entire opening area.

この状態から、エンジン-車体間が伸長して第2連通開口部34から中間室28に第2液室24内の液体が流れ込むと、その液体に押されて、膜体30からなる揺動部材が中間室28内を図示上方、つまり第1区画壁31側に揺動する。その結果、第1区画壁31の第1連通開口部32は、図2(B)に示すように、2個とも、膜体30からなる揺動部材によって完全に閉塞される。従って、特に第1連通開口部32が閉塞されるときに、第2連通開口部34から中間室28を経て第1液室22に流れようとする液体の流れが抑止され、エンジン-車体間の伸長に伴う振動入力が大きく減衰される(大きな減衰力が発現される)。 From this state, when the liquid between the engine and the vehicle body extends and the liquid in the second liquid chamber 24 flows from the second communication opening 34 into the intermediate chamber 28, the liquid is pushed by the liquid and the rocking member made of the film body 30 is formed. Swings in the intermediate chamber 28 upward in the figure, that is, toward the first partition wall 31 side. As a result, as shown in FIG. 2B, both of the first communication openings 32 of the first partition wall 31 are completely closed by the rocking member made of the membrane body 30. Therefore, particularly when the first communication opening 32 is closed, the flow of liquid that tends to flow from the second communication opening 34 to the first liquid chamber 22 via the intermediate chamber 28 is suppressed, and the flow between the engine and the vehicle body is suppressed. The vibration input associated with elongation is greatly damped (a large damping force is expressed).

一方、図2(A)の状態から、エンジン-車体間が圧縮して第1連通開口部32から中間室28に第1液室22内の液体が流れ込むと、その液体に押されて、膜体30からなる揺動部材が中間室28内を図示下方、つまり第2区画壁33側に揺動する。その結果、第2区画壁33の第2連通開口部34は、図2(C)に示すように、膜体30からなる揺動部材によって図示右方端部のみが少し閉塞される。従って、第1連通開口部32から中間室28に流れ込んだ液体は、ほぼそのまま第2連通開口部34から第2液室24内に流れ、エンジン-車体間の圧縮に伴う振動入力は、減衰されないか、又は少し減衰される。 On the other hand, when the liquid between the engine and the vehicle body is compressed from the state of FIG. 2A and the liquid in the first liquid chamber 22 flows from the first communication opening 32 into the intermediate chamber 28, it is pushed by the liquid and the film is formed. The swinging member made of the body 30 swings in the intermediate chamber 28 downward in the drawing, that is, toward the second partition wall 33 side. As a result, as shown in FIG. 2C, the second communication opening 34 of the second partition wall 33 is slightly closed only at the right end portion shown by the rocking member made of the membrane body 30. Therefore, the liquid that has flowed from the first communication opening 32 into the intermediate chamber 28 flows from the second communication opening 34 into the second liquid chamber 24 almost as it is, and the vibration input due to the compression between the engine and the vehicle body is not attenuated. Or slightly attenuated.

周知のように、例えば区画壁に形成された比較的面積の小さい連通開口部を液体が流動すると、その流動に伴って流動抵抗が生じる。従って、振動入力によって液体が連通開口部を流動する場合には、振動入力に対して幾らか減衰が生じる。このことから、例えば図2(C)に示すように、第1連通開口部32から中間室28に流れ込んだ液体がほぼそのまま第2連通開口部34から第2液室24内に流れるような場合であっても、例えば第1連通開口部32の開口面積や開口形状などの開口状態によって振動入力を減衰することもできる。同様に、膜体30からなる揺動部材による第2連通開口部34の閉塞状態、或いは膜体30からなる揺動部材の剛性や可撓性などによっても、振動入力に対する減衰が生じる。また、液体の粘性・慣性によっても減衰特性が変わる。こうした減衰特性は、例えば周知の解析ソフトウエアによって、比較的簡易に求めることができるので、所望する減衰特性が発生されるように、例えば連通開口部の開口状態や閉塞状態、揺動部材の材料特性、液体の特性を設定することができる。 As is well known, for example, when a liquid flows through a communication opening having a relatively small area formed in a partition wall, flow resistance occurs with the flow. Therefore, when the liquid flows through the communication opening due to the vibration input, some damping occurs with respect to the vibration input. From this, for example, as shown in FIG. 2C, when the liquid flowing from the first communication opening 32 into the intermediate chamber 28 flows from the second communication opening 34 into the second liquid chamber 24 almost as it is. However, the vibration input can be attenuated depending on the opening state such as the opening area and the opening shape of the first communication opening 32, for example. Similarly, the damping state with respect to the vibration input also occurs due to the closed state of the second communication opening 34 by the swinging member made of the film body 30, or the rigidity and flexibility of the swinging member made of the film body 30. In addition, the damping characteristics change depending on the viscosity and inertia of the liquid. Such damping characteristics can be obtained relatively easily by, for example, well-known analysis software, so that the desired damping characteristics can be obtained, for example, in the open state or closed state of the communication opening, and the material of the rocking member. Characteristics and liquid characteristics can be set.

図3は、図1の閉塞構造の変形例を示す作用の説明図である。この変形例では、第1区画壁31の図示右寄りに比較的開口面積の小さい第1連通開口部32を1個開設し、第2区画壁33の図示左寄りに比較的開口面積の小さい第2連通開口部34を1個開設している。この変形例でも、第1液室22と第2液室24の液体に差圧がない場合、つまり第1液室22及び第2液室24間で液体の流動がない場合、図3(A)に示すように、膜体30からなる揺動部材は自己復元力によって中間室28の高さ(厚さ)方向中央部に浮いた状態となり、第1区画壁31の第1連通開口部32も第2区画壁33の第2連通開口部34も全開口面積が開口している。 FIG. 3 is an explanatory diagram of an action showing a modified example of the closed structure of FIG. In this modification, one first communication opening 32 having a relatively small opening area is opened on the right side of the drawing of the first partition wall 31, and the second communication opening 32 having a relatively small opening area is opened on the left side of the drawing of the second partition wall 33. One opening 34 is opened. Also in this modification, when there is no differential pressure between the liquids in the first liquid chamber 22 and the second liquid chamber 24, that is, when there is no liquid flow between the first liquid chamber 22 and the second liquid chamber 24, FIG. 3 (A). ), The rocking member made of the film body 30 floats in the central portion in the height (thickness) direction of the intermediate chamber 28 due to the self-restoring force, and the first communication opening 32 of the first partition wall 31 Also, the entire opening area of the second communication opening 34 of the second partition wall 33 is open.

この状態から、エンジン-車体間が伸長して第2連通開口部34から中間室28に第2液室24内の液体が流れ込むと、その液体に押されて、膜体30からなる揺動部材が中間室28内を図示上方、つまり第1区画壁31側に揺動する。その結果、第1区画壁31の第1連通開口部32は、図3(B)に示すように、膜体30からなる揺動部材によって完全に閉塞される。従って、特に第1連通開口部32が閉塞されるときに、第2連通開口部34から中間室28を経て第1液室22に流れようとする液体の流れが抑止され、エンジン-車体間の伸長に伴う振動入力が大きく減衰される(大きな減衰力が発現される)。 From this state, when the liquid between the engine and the vehicle body extends and the liquid in the second liquid chamber 24 flows from the second communication opening 34 into the intermediate chamber 28, the liquid is pushed by the liquid and the rocking member made of the film body 30 is formed. Swings in the intermediate chamber 28 upward in the figure, that is, toward the first partition wall 31 side. As a result, as shown in FIG. 3B, the first communication opening 32 of the first partition wall 31 is completely closed by the rocking member made of the membrane body 30. Therefore, particularly when the first communication opening 32 is closed, the flow of liquid that tends to flow from the second communication opening 34 to the first liquid chamber 22 via the intermediate chamber 28 is suppressed, and the flow between the engine and the vehicle body is suppressed. The vibration input associated with elongation is greatly damped (a large damping force is expressed).

一方、図3(A)の状態から、エンジン-車体間が圧縮して第1連通開口部32から中間室28に第1液室22内の液体が流れ込むと、その液体に押されて、膜体30からなる揺動部材が中間室28内を図示下方、つまり第2区画壁33側に揺動する。しかしながら、中間室28内を下方に揺動した膜体30からなる揺動部材が第2区画壁33に当接しても、図3(C)に示すように、揺動部材を構成する膜体30は第2連通開口部34に届かず、第2連通開口部34は全開口面積が開口し続ける。従って、第1連通開口部32から中間室28に流れ込んだ液体は、そのまま第2連通開口部34から第2液室24内に流れ、エンジン-車体間の圧縮に伴う振動入力は、図2(C)の説明と同様に、減衰されないか、又は少し減衰される。 On the other hand, when the liquid between the engine and the vehicle body is compressed from the state of FIG. 3A and the liquid in the first liquid chamber 22 flows from the first communication opening 32 into the intermediate chamber 28, it is pushed by the liquid and the film is formed. The swinging member made of the body 30 swings in the intermediate chamber 28 downward in the drawing, that is, toward the second partition wall 33 side. However, even if the rocking member composed of the membrane body 30 swinging downward in the intermediate chamber 28 abuts on the second partition wall 33, as shown in FIG. 3C, the membrane body constituting the rocking member is formed. 30 does not reach the second communication opening 34, and the entire opening area of the second communication opening 34 continues to open. Therefore, the liquid that has flowed from the first communication opening 32 into the intermediate chamber 28 flows directly from the second communication opening 34 into the second liquid chamber 24, and the vibration input due to the compression between the engine and the vehicle body is shown in FIG. Similar to the description in C), it is not attenuated or slightly attenuated.

図4は、本発明の液体封入マウント装置の第2の実施の形態を示す断面図である。この実施の形態の液体封入マウント装置は、上記第1の実施の形態の液体封入マウント装置と類似している。具体的には、膜体(揺動部材)30、第1連通開口部32(第1区画壁31)、第2連通開口部34(第2区画壁33)などを含む中間室28の構造が異なるだけで、他は同等である。そこで、同等の構成には同等の符号を付して、その詳細な説明を省略する。 FIG. 4 is a cross-sectional view showing a second embodiment of the liquid filling mount device of the present invention. The liquid-filled mounting device of this embodiment is similar to the liquid-filled mounting device of the first embodiment. Specifically, the structure of the intermediate chamber 28 including the membrane body (swing member) 30, the first communication opening 32 (first partition wall 31), the second communication opening 34 (second partition wall 33), and the like is formed. The others are equivalent, only different. Therefore, the equivalent configurations are designated by the same reference numerals, and detailed description thereof will be omitted.

この実施の形態の中間室28は、図1の中間室28よりも、図示左右方向の寸法が大きく、その左右両壁部から中央部に向けて、夫々1つずつ、同形状の膜体30からなる揺動部材が突設されている。揺動部材を構成する膜体30の図示左右方向の長さは、中間室28の図示左右方向の寸法の半分未満である。また、第1区画壁31には、図示左右両側寄りと中央部に、計3個の第1連通開口部32が開設され、第2区画壁33には、図示左右両側寄りに、夫々1個ずつ、第2連通開口部34が開設されている。第1連通開口部32の開口面積は、全て同等で且つ比較的小さく、第2連通開口部34の開口面積は、2個とも同等で且つ第1連通開口部32の開口面積よりもやや大きい。 The intermediate chamber 28 of this embodiment has a larger dimension in the left-right direction in the drawing than the intermediate chamber 28 of FIG. 1, and a film body 30 having the same shape is provided one by one from the left and right wall portions toward the center portion. A rocking member made of is projected. The length of the film body 30 constituting the rocking member in the left-right direction shown in the figure is less than half of the dimension in the left-right direction shown in the intermediate chamber 28. Further, a total of three first communication openings 32 are opened in the first partition wall 31 near the left and right sides in the figure and in the center, and one each in the second partition wall 33 near the left and right sides in the figure. The second communication opening 34 is opened one by one. The opening areas of the first communication opening 32 are all the same and relatively small, and the opening area of the second communication opening 34 is the same for both of them and slightly larger than the opening area of the first communication opening 32.

図5は、図4の中間室28、膜体(揺動部材)30、第1連通開口部32(第1区画壁31)、第2連通開口部34(第2区画壁33)を抽出した作用の説明図である。何れも、図の上方が第1液室22、図の下方が第2液室24に相当する。第1液室22と第2液室24の液体に差圧がない場合、つまり第1液室22及び第2液室24間で液体の流動がない場合、図5(A)に示すように、膜体30からなる2つの揺動部材は自己復元力によって中間室28の高さ(厚さ)方向中央部に浮いた状態となり、第1区画壁31の第1連通開口部32も第2区画壁33の第2連通開口部34も全開口面積が開口している。 FIG. 5 extracts the intermediate chamber 28, the membrane body (oscillating member) 30, the first communication opening 32 (first communication wall 31), and the second communication opening 34 (second partition wall 33) of FIG. It is explanatory drawing of the action. In each case, the upper part of the figure corresponds to the first liquid chamber 22, and the lower part of the figure corresponds to the second liquid chamber 24. As shown in FIG. 5A, when there is no differential pressure between the liquids in the first liquid chamber 22 and the second liquid chamber 24, that is, when there is no liquid flow between the first liquid chamber 22 and the second liquid chamber 24. The two rocking members made of the film body 30 are in a state of floating in the central portion in the height (thickness) direction of the intermediate chamber 28 due to the self-restoring force, and the first communication opening 32 of the first partition wall 31 is also the second. The entire opening area of the second communication opening 34 of the partition wall 33 is also open.

この状態から、エンジン-車体間が伸長して第2連通開口部34から中間室28に第2液室24内の液体が流れ込むと、その液体に押されて、膜体30からなる揺動部材が中間室28内を図示上方、つまり第1区画壁31側に揺動する。その結果、第1区画壁31の第1連通開口部32のうち、図示左右寄りの第1連通開口部32は、図5(B)に示すように、膜体30からなる揺動部材によって完全に閉塞されるが、図示中央部の第1連通開口部32は開口したままである。従って、図示中央部の第1連通開口部32から中間室28に流れ込んだ液体は、そのまま第2連通開口部34から第2液室24内に流れ、エンジン-車体間の伸長に伴う振動入力は、図2(C)の説明と同様に、減衰されないか、又は少し減衰される。 From this state, when the liquid between the engine and the vehicle body extends and the liquid in the second liquid chamber 24 flows from the second communication opening 34 into the intermediate chamber 28, the liquid is pushed by the liquid and the rocking member made of the film body 30 is formed. Swings in the intermediate chamber 28 upward in the figure, that is, toward the first partition wall 31 side. As a result, of the first communication opening 32 of the first partition wall 31, the first communication opening 32 on the left and right sides in the drawing is completely formed by the rocking member made of the film body 30, as shown in FIG. 5 (B). However, the first communication opening 32 in the central portion of the drawing remains open. Therefore, the liquid that has flowed into the intermediate chamber 28 from the first communication opening 32 in the central portion of the drawing flows directly from the second communication opening 34 into the second liquid chamber 24, and the vibration input due to the extension between the engine and the vehicle body is input. , Unattenuated or slightly attenuated, as described in FIG. 2 (C).

一方、図5(A)の状態から、エンジン-車体間が圧縮して第1連通開口部32から中間室28に第1液室22内の液体が流れ込むと、その液体に押されて、膜体30からなる揺動部材が中間室28内を図示下方、つまり第2区画壁33側に揺動する。その結果、第2区画壁33の第2連通開口部34は、図5(C)に示すように、2個とも、膜体30からなる揺動部材によって完全に閉塞される。従って、特に第2連通開口部34が閉塞されるときに、第1連通開口部32から中間室28を経て第2液室24に流れようとする液体の流れが抑止され、エンジン-車体間の圧縮に伴う振動入力が大きく減衰される(大きな減衰力が発現される)。 On the other hand, when the liquid between the engine and the vehicle body is compressed from the state of FIG. 5A and the liquid in the first liquid chamber 22 flows from the first communication opening 32 into the intermediate chamber 28, it is pushed by the liquid and the film is formed. The swinging member made of the body 30 swings in the intermediate chamber 28 downward in the drawing, that is, toward the second partition wall 33 side. As a result, as shown in FIG. 5C, both of the second communication openings 34 of the second partition wall 33 are completely closed by the rocking member made of the membrane body 30. Therefore, particularly when the second communication opening 34 is closed, the flow of liquid that tends to flow from the first communication opening 32 to the second liquid chamber 24 via the intermediate chamber 28 is suppressed, and the flow between the engine and the vehicle body is suppressed. The vibration input associated with compression is greatly damped (a large damping force is expressed).

このように、これらの実施の形態では、第1液室22とも第2液室24とも区画された中間室28を第1液室22及び第2液室24の間に形成し、中間室28と第1液室22を連通する第1連通開口部32を中間室28と第1液室22の第1区画壁31に形成すると共に、中間室28と第2液室24を連通する第2連通開口部34を中間室28と第2液室24との第2区画壁33に形成し、第1連通開口部32又は第2連通開口部34から流入する液体によって揺動する膜体(揺動部材)30を中間室28の内部に設ける。 As described above, in these embodiments, the intermediate chamber 28 partitioned from both the first liquid chamber 22 and the second liquid chamber 24 is formed between the first liquid chamber 22 and the second liquid chamber 24, and the intermediate chamber 28 is formed. The first communication opening 32 that communicates with the first liquid chamber 22 is formed in the first partition wall 31 of the intermediate chamber 28 and the first liquid chamber 22, and the second communication chamber 28 and the second liquid chamber 24 communicate with each other. A film body (swaying) in which the communication opening 34 is formed in the second partition wall 33 between the intermediate chamber 28 and the second liquid chamber 24 and is shaken by the liquid flowing in from the first communication opening 32 or the second communication opening 34. The moving member) 30 is provided inside the intermediate chamber 28.

従って、第1連通開口部32及び第2連通開口部34の開口状態や膜体(揺動部材)30の揺動規制状態を種々に変更することによって、膜体(揺動部材)30による第2連通開口部34閉塞状態及び第1連通開口部32閉塞状態を種々に調整することができる。これにより、第1連通開口部32又は第2連通開口部34から中間室28を経て第2連通開口部34又は第1連通開口部32に流動する液体の流動状態、即ち減衰特性を種々に設定することができるので、圧縮方向と伸長方向とで振動入力に対する減衰特性を変えることができるといったように、マウント装置の減衰特性を細かく設定することが可能となる。 Therefore, by variously changing the opening state of the first communication opening 32 and the second communication opening 34 and the swing restricting state of the film body (swing member) 30, the film body (swing member) 30 can be used. The closed state of the two communication openings 34 and the closed state of the first communication opening 32 can be adjusted in various ways. As a result, the flow state of the liquid flowing from the first communication opening 32 or the second communication opening 34 to the second communication opening 34 or the first communication opening 32 via the intermediate chamber 28, that is, the damping characteristics are set variously. Therefore, it is possible to finely set the damping characteristics of the mounting device so that the damping characteristics with respect to the vibration input can be changed in the compression direction and the expansion direction.

また、揺動部材を膜体30で構成し、第1連通開口部32及び第2連通開口部34の形成位置や大きさ、形状といった開口状態を適宜設定することにより、第1連通開口部32から液体が流入する場合と第2連通開口部34から液体が流入する場合とで膜体30による第1連通開口部32閉塞面積と第2連通開口部34閉塞面積とが異なるものとしたので、圧縮方向と伸長方向とで振動入力に対する減衰特性を変えることができ、これによりマウント装置の減衰特性を細かく設定することができる。 Further, the rocking member is composed of the film body 30, and the opening state such as the formation position, size, and shape of the first communication opening 32 and the second communication opening 34 is appropriately set, so that the first communication opening 32 is formed. Since the closed area of the first communication opening 32 and the closed area of the second communication opening 34 by the film body 30 are different depending on whether the liquid flows in from the second communication opening 34 or the second communication opening 34. The damping characteristics for the vibration input can be changed in the compression direction and the expansion direction, whereby the damping characteristics of the mounting device can be finely set.

また、揺動部材を構成する膜体30によって第1連通開口部32又は第2連通開口部34が完全に閉塞されるときに大きな減衰力を発現することが可能となり、その分だけ、マウント装置の減衰特性を細かく設定することができる。 Further, when the first communication opening 32 or the second communication opening 34 is completely closed by the membrane body 30 constituting the rocking member, a large damping force can be generated, and the mounting device can be correspondingly increased. The attenuation characteristics of can be set in detail.

図6は、本発明の液体封入マウント装置の第3の実施の形態を示す断面図である。この実施の形態の液体封入マウント装置は、上記第1の実施の形態の液体封入マウント装置と類似している。具体的には、膜体(揺動部材)30、第1連通開口部32(第1区画壁31)、第2連通開口部34(第2区画壁33)などを含む中間室28の構造が異なるだけで、他は同等である。そこで、同等の構成には同等の符号を付して、その詳細な説明を省略する。 FIG. 6 is a cross-sectional view showing a third embodiment of the liquid filling mount device of the present invention. The liquid-filled mounting device of this embodiment is similar to the liquid-filled mounting device of the first embodiment. Specifically, the structure of the intermediate chamber 28 including the membrane body (swing member) 30, the first communication opening 32 (first partition wall 31), the second communication opening 34 (second partition wall 33), and the like is formed. The others are equivalent, only different. Therefore, the equivalent configurations are designated by the same reference numerals, and detailed description thereof will be omitted.

この実施の形態の中間室28は、図1の中間室28と同等であり、揺動部材を構成する膜体30も、図1の膜体30と同等であり、且つ図1の膜体30と同様に、中間室28の高さ(厚さ)方向中央部において、図の右壁部から突設されている。一方、この実施の形態では、第1区画壁31の図示右寄りに比較的開口面積の小さい第1連通開口部32を2個開設し、第2区画壁33にも同様に、図示右寄りに比較的開口面積の小さい第2連通開口部34を2個開設している。従って、この実施の形態における第1連通開口部32及び第2連通開口部34の開口状態は同等である。 The intermediate chamber 28 of this embodiment is equivalent to the intermediate chamber 28 of FIG. 1, the membrane body 30 constituting the rocking member is also equivalent to the membrane body 30 of FIG. 1, and the membrane body 30 of FIG. 1 is also the same. Similarly, in the central portion in the height (thickness) direction of the intermediate chamber 28, the intermediate chamber 28 is projected from the right wall portion in the figure. On the other hand, in this embodiment, two first communication openings 32 having a relatively small opening area are provided on the right side of the drawing of the first partition wall 31, and similarly, the second partition wall 33 is relatively close to the right side of the drawing. Two second communication openings 34 having a small opening area are opened. Therefore, the opening states of the first communication opening 32 and the second communication opening 34 in this embodiment are the same.

この実施の形態では、膜体30からなる揺動部材の突出方向先端部下面、即ち第2区画壁33側に、膜体30からなる揺動部材の揺動動作を規制する規制部材36が設けられている。図7(D)は、後述するように、膜体30からなる揺動部材を突出方向先方から見た断面図である。この規制部材36は、比較的小さな直方体又は立方体を形成し、例えば図7(D)に示すように、膜体30からなる揺動部材の突出方向先端部下面のうち、膜体30の突出方向と直交する幅方向両端部にのみ、一体的に設けられている。この規制部材36は、例えば樹脂や膜体30と同等の材料で構成される。この規制部材36は、図では、膜体30と別体に示されているが、膜体30と一体形成されてもよい。この規制部材36が、本発明の規制部を構成する。 In this embodiment, a regulating member 36 for restricting the swinging operation of the swinging member made of the film body 30 is provided on the lower surface of the tip portion of the swinging member made of the film body 30 in the protruding direction, that is, on the side of the second partition wall 33. Has been done. FIG. 7D is a cross-sectional view of the rocking member made of the membrane body 30 as viewed from the front in the protruding direction, as will be described later. The regulating member 36 forms a relatively small rectangular parallelepiped or cube, and as shown in FIG. 7 (D), for example, in the protruding direction of the membrane body 30 among the lower surface of the protruding end portion of the rocking member made of the membrane body 30. It is integrally provided only at both ends in the width direction orthogonal to. The regulating member 36 is made of, for example, a resin or a material equivalent to that of the film body 30. Although the regulating member 36 is shown separately from the membrane body 30 in the figure, it may be integrally formed with the membrane body 30. The regulatory member 36 constitutes the regulatory unit of the present invention.

図7は、図4の中間室28、膜体(揺動部材)30、第1連通開口部32(第1区画壁31)、第2連通開口部34(第2区画壁33)を抽出した作用の説明図である。図7(A)~(C)は、何れも、図の上方が第1液室22、図の下方が第2液室24に相当する。また、図7(D)は、図7(C)の状態において、膜体30からなる揺動部材を突出方向先方から見た断面図である。第1液室22と第2液室24の液体に差圧がない場合、つまり第1液室22及び第2液室24間で液体の流動がない場合、図7(A)に示すように、膜体30からなる2つの揺動部材は自己復元力によって中間室28の高さ(厚さ)方向中央部に浮いた状態となり、第1区画壁31の第1連通開口部32も第2区画壁33の第2連通開口部34も全開口面積が開口している。 FIG. 7 is an extraction of the intermediate chamber 28, the membrane body (swing member) 30, the first communication opening 32 (first partition wall 31), and the second communication opening 34 (second partition wall 33) of FIG. It is explanatory drawing of the action. In each of FIGS. 7A to 7C, the upper part of the figure corresponds to the first liquid chamber 22 and the lower part of the figure corresponds to the second liquid chamber 24. Further, FIG. 7 (D) is a cross-sectional view of the rocking member made of the film body 30 as viewed from the front in the protruding direction in the state of FIG. 7 (C). As shown in FIG. 7A, when there is no differential pressure between the liquids in the first liquid chamber 22 and the second liquid chamber 24, that is, when there is no liquid flow between the first liquid chamber 22 and the second liquid chamber 24. The two rocking members made of the film body 30 are in a state of floating in the central portion in the height (thickness) direction of the intermediate chamber 28 due to the self-restoring force, and the first communication opening 32 of the first partition wall 31 is also the second. The entire opening area of the second communication opening 34 of the partition wall 33 is also open.

この状態から、エンジン-車体間が伸長して第2連通開口部34から中間室28に第2液室24内の液体が流れ込むと、その液体に押されて、膜体30からなる揺動部材が中間室28内を図示上方、つまり第1区画壁31側に揺動する。その結果、第1区画壁31の第1連通開口部32は、図7(B)に示すように、2個とも、膜体30からなる揺動部材によって完全に閉塞される。従って、特に第1連通開口部32が閉塞されるときに、第2連通開口部34から中間室28を経て第1液室22に流れようとする液体の流れが抑止され、エンジン-車体間の伸長に伴う振動入力が大きく減衰される(大きな減衰力が発現される)。 From this state, when the liquid between the engine and the vehicle body extends and the liquid in the second liquid chamber 24 flows from the second communication opening 34 into the intermediate chamber 28, the liquid is pushed by the liquid and the rocking member made of the film body 30 is formed. Swings in the intermediate chamber 28 upward in the figure, that is, toward the first partition wall 31 side. As a result, as shown in FIG. 7B, both of the first communication openings 32 of the first partition wall 31 are completely closed by the rocking member made of the membrane body 30. Therefore, particularly when the first communication opening 32 is closed, the flow of liquid that tends to flow from the second communication opening 34 to the first liquid chamber 22 via the intermediate chamber 28 is suppressed, and the flow between the engine and the vehicle body is suppressed. The vibration input associated with elongation is greatly damped (a large damping force is expressed).

一方、図7(A)の状態から、エンジン-車体間が圧縮して第1連通開口部32から中間室28に第1液室22内の液体が流れ込むと、その液体に押されて、膜体30からなる揺動部材が中間室28内を図示下方、つまり第2区画壁33側に揺動する。しかしながら、この膜体30の突出方向先端部下面、即ち第2区画壁33側には規制部材36が設けられており、膜体30の図示下方への移動に伴い、膜体30が第2区画壁33に当接する以前に規制部材36が第2区画壁33に当接する。そのため、図7(C)に示すように、膜体30は、第2区画壁33の上面、即ち中間室28側面に完全に当接せず、膜体30と第2区画壁33の間に隙間ができる。その結果、第2区画壁33の第2連通開口部34は完全に閉塞されることなく、中間室28と第2液室24の間で少し開口している。従って、第1連通開口部32から中間室28に流れ込んだ液体は、第2連通開口部34から第2液室24内に流れ、エンジン-車体間の圧縮に伴う振動入力は、図2(C)の説明と同様に、減衰されないか、又は少し減衰される。 On the other hand, when the liquid between the engine and the vehicle body is compressed from the state of FIG. 7A and the liquid in the first liquid chamber 22 flows from the first communication opening 32 into the intermediate chamber 28, it is pushed by the liquid and the film is formed. The swinging member made of the body 30 swings in the intermediate chamber 28 downward in the drawing, that is, toward the second partition wall 33 side. However, the regulating member 36 is provided on the lower surface of the tip portion of the film body 30 in the protruding direction, that is, on the side of the second partition wall 33, and the film body 30 becomes the second section as the film body 30 moves downward in the drawing. The regulating member 36 comes into contact with the second partition wall 33 before it comes into contact with the wall 33. Therefore, as shown in FIG. 7C, the membrane body 30 does not completely abut on the upper surface of the second partition wall 33, that is, the side surface of the intermediate chamber 28, and is between the membrane body 30 and the second partition wall 33. There is a gap. As a result, the second communication opening 34 of the second partition wall 33 is not completely closed, but is slightly opened between the intermediate chamber 28 and the second liquid chamber 24. Therefore, the liquid that has flowed from the first communication opening 32 into the intermediate chamber 28 flows from the second communication opening 34 into the second liquid chamber 24, and the vibration input due to the compression between the engine and the vehicle body is shown in FIG. 2 (C). ), It is not attenuated or is slightly attenuated.

更に、この実施の形態では、揺動部材を構成する膜体30の幅方向両端部下面、即ち第2区画壁33側にのみ、規制部材36が設けられているので、図7(D)に示すように、第2連通開口部34の開口幅が膜体30の幅より小さい場合、この規制部材36で浮いている膜体30の部分で第2区画壁33との隙間が大きくなり、この隙間を通じて中間室28内の液体が第2連通開口部34から第2液室24に流れる。従って、規制部材36による膜体30の幅方向の第2区画壁33との隙間によっても、エンジン-車体間の圧縮時の減衰特性を調整することができる。 Further, in this embodiment, since the regulating member 36 is provided only on the lower surfaces of both ends in the width direction of the film body 30 constituting the rocking member, that is, on the side of the second partition wall 33, FIG. 7 (D) shows. As shown, when the opening width of the second communication opening 34 is smaller than the width of the membrane body 30, the gap between the membrane body 30 floating by the restricting member 36 and the second partition wall 33 becomes large, and this The liquid in the intermediate chamber 28 flows from the second communication opening 34 to the second liquid chamber 24 through the gap. Therefore, the damping characteristic at the time of compression between the engine and the vehicle body can also be adjusted by the gap between the regulating member 36 and the second partition wall 33 in the width direction of the film body 30.

図8は、図6の閉塞構造の変形例を示す作用の説明図である。この変形例では、膜体30で構成される揺動部材の揺動動作を規制する規制部材36が、膜体30ではなく、中間室28と第2液室24の区画部、即ち中間室構成部材に設けられている。具体的には、第2区画壁33の上面、即ち膜体30側面において、中間室28の図示左壁部から膜体30の突出方向先端部直下まで一連の規制部材36が第2区画壁33と一体的に設けられている。この規制部材36の断面形状は、例えば図7(D)に示すような形状であってもよい。この規制部材36が、本発明の規制部を構成する。この変形例でも、第1液室22と第2液室24の液体に差圧がない場合、つまり第1液室22及び第2液室24間で液体の流動がない場合、図8(A)に示すように、膜体30からなる揺動部材は自己復元力によって中間室28の高さ(厚さ)方向中央部に浮いた状態となり、第1区画壁31の第1連通開口部32も第2区画壁33の第2連通開口部34も全開口面積が開口している。 FIG. 8 is an explanatory diagram of an action showing a modified example of the closed structure of FIG. In this modification, the restricting member 36 that regulates the swinging motion of the swinging member composed of the membrane body 30 is not the membrane body 30, but a section between the intermediate chamber 28 and the second liquid chamber 24, that is, an intermediate chamber configuration. It is provided on the member. Specifically, on the upper surface of the second partition wall 33, that is, on the side surface of the membrane body 30, a series of regulatory members 36 from the illustrated left wall portion of the intermediate chamber 28 to just below the tip portion in the protruding direction of the membrane body 30 is the second partition wall 33. It is provided integrally with. The cross-sectional shape of the regulating member 36 may be, for example, a shape as shown in FIG. 7 (D). The regulatory member 36 constitutes the regulatory unit of the present invention. Also in this modification, when there is no differential pressure between the liquids in the first liquid chamber 22 and the second liquid chamber 24, that is, when there is no liquid flow between the first liquid chamber 22 and the second liquid chamber 24, FIG. 8 (A). ), The rocking member made of the film body 30 floats in the central portion in the height (thickness) direction of the intermediate chamber 28 due to the self-restoring force, and the first communication opening 32 of the first partition wall 31 Also, the entire opening area of the second communication opening 34 of the second partition wall 33 is open.

この状態から、エンジン-車体間が伸長して第2連通開口部34から中間室28に第2液室24内の液体が流れ込むと、その液体に押されて、膜体30からなる揺動部材が中間室28内を図示上方、つまり第1区画壁31側に揺動する。その結果、第1区画壁31の第1連通開口部32は、図8(B)に示すように、2個とも、膜体30からなる揺動部材によって完全に閉塞される。従って、特に第1連通開口部32が閉塞されるときに、第2連通開口部34から中間室28を経て第1液室22に流れようとする液体の流れが抑止され、エンジン-車体間の伸長に伴う振動入力が大きく減衰される(大きな減衰力が発現される)。 From this state, when the liquid between the engine and the vehicle body extends and the liquid in the second liquid chamber 24 flows from the second communication opening 34 into the intermediate chamber 28, the liquid is pushed by the liquid and the rocking member made of the film body 30 is formed. Swings in the intermediate chamber 28 upward in the figure, that is, toward the first partition wall 31 side. As a result, as shown in FIG. 8B, both of the first communication openings 32 of the first partition wall 31 are completely closed by the rocking member made of the membrane body 30. Therefore, particularly when the first communication opening 32 is closed, the flow of liquid that tends to flow from the second communication opening 34 to the first liquid chamber 22 via the intermediate chamber 28 is suppressed, and the flow between the engine and the vehicle body is suppressed. The vibration input associated with elongation is greatly damped (a large damping force is expressed).

一方、図8(A)の状態から、エンジン-車体間が圧縮して第1連通開口部32から中間室28に第1液室22内の液体が流れ込むと、その液体に押されて、膜体30からなる揺動部材が中間室28内を図示下方、つまり第2区画壁33側に揺動する。しかしながら、第2区画壁33の上面のうち、膜体30の突出方向先端部下方には規制部材36が設けられており、膜体30の図示下方への移動に伴い、膜体30が第2区画壁33に当接する以前に規制部材36が膜体30に当接する。そのため、図8(C)に示すように、膜体30は、第2区画壁33の上面、即ち中間室28側面に完全に当接せず、膜体30と第2区画壁33の間に隙間ができる。その結果、第2区画壁33の第2連通開口部34は完全に閉塞されることなく、中間室28と第2液室24の間で少し開口している。従って、第1連通開口部32から中間室28に流れ込んだ液体は、第2連通開口部34から第2液室24内に流れ、エンジン-車体間の圧縮に伴う振動入力は、図2(C)の説明と同様に、減衰されないか、又は少し減衰される。 On the other hand, when the liquid between the engine and the vehicle body is compressed from the state of FIG. 8A and the liquid in the first liquid chamber 22 flows from the first communication opening 32 into the intermediate chamber 28, it is pushed by the liquid and the film is formed. The swinging member made of the body 30 swings in the intermediate chamber 28 downward in the drawing, that is, toward the second partition wall 33 side. However, in the upper surface of the second partition wall 33, the regulating member 36 is provided below the tip end portion in the protruding direction of the film body 30, and the film body 30 is second as the film body 30 moves downward in the drawing. The regulating member 36 abuts on the membrane 30 before abuting on the partition wall 33. Therefore, as shown in FIG. 8C, the membrane body 30 does not completely abut on the upper surface of the second partition wall 33, that is, the side surface of the intermediate chamber 28, and is between the membrane body 30 and the second partition wall 33. There is a gap. As a result, the second communication opening 34 of the second partition wall 33 is not completely closed, but is slightly opened between the intermediate chamber 28 and the second liquid chamber 24. Therefore, the liquid that has flowed from the first communication opening 32 into the intermediate chamber 28 flows from the second communication opening 34 into the second liquid chamber 24, and the vibration input due to the compression between the engine and the vehicle body is shown in FIG. 2 (C). ), It is not attenuated or is slightly attenuated.

このように、これらの実施の形態では、上記第1及び第2の実施の形態の効果に加えて又はそれに代えて、揺動部材を膜体30で構成し、膜体30の揺動動作を規制する規制部材36により、第1連通開口部32から液体が流入する場合と第2連通開口部34から液体が流入する場合とで膜体30による第1連通開口部32閉塞面積と第2連通開口部34閉塞面積とが異なるものとしたので、例えば圧縮方向と伸長方向とで振動入力に対する減衰特性を変えることができ、これによりマウント装置の減衰特性を細かく設定することができる。 As described above, in these embodiments, in addition to or in place of the effects of the first and second embodiments, the rocking member is composed of the film body 30, and the rocking motion of the film body 30 is performed. The area blocked by the first communication opening 32 and the second communication by the film body 30 in the case where the liquid flows in from the first communication opening 32 and the case where the liquid flows in from the second communication opening 34 by the regulating member 36 to be regulated. Since the closed area of the opening 34 is different, for example, the damping characteristic for the vibration input can be changed in the compression direction and the expansion direction, whereby the damping characteristic of the mounting device can be finely set.

なお、上記実施の形態では、閉塞構造又は規制部の何れか一方のみを適用したものについて説明したが、本発明では、液体封入マウント装置に上記閉塞構造と規制部を同時に適用することも可能である。 In the above embodiment, only one of the closed structure and the regulated portion is applied, but in the present invention, the closed structure and the regulated portion can be applied to the liquid encapsulation mount device at the same time. be.

本発明が上記していない様々な実施の形態等を含むことは勿論である。従って、本発明の技術的範囲は上記の説明から妥当とされる特許請求の範囲に記載された発明特定事項によってのみ定められるものである。 It goes without saying that the present invention includes various embodiments not described above. Therefore, the technical scope of the present invention is defined only by the matters specifying the invention described in the claims that are valid from the above description.

22 第1液室
24 第2液室
26 減衰流路
28 中間室
30 膜体(揺動部材)
31 第1区画壁(区画部)
32 第1連通開口部
33 第2区画壁(区画部)
34 第2連通開口部
36 規制部材(規制部)
22 1st liquid chamber 24 2nd liquid chamber 26 Attenuation flow path 28 Intermediate chamber 30 Membrane body (oscillating member)
31 1st section wall (section)
32 1st communication opening 33 2nd compartment wall (compartment)
34 Second communication opening 36 Regulatory member (regulatory section)

Claims (1)

減衰流路を介して連結され、夫々液体が封入された第1液室及び第2液室を有し、それら液室の少なくとも一方が弾性変形可能に構成された液体封入マウント装置において、
前記第1液室及び第2液室の間に両液室を仕切るように形成され且つ第1液室とも第2液室とも区画された中間室と、
前記中間室と第1液室との区画部に形成され、該中間室と第1液室とを連通する第1連通開口部と、
前記中間室と第2液室との区画部に形成され、該中間室と第2液室とを連通する第2連通開口部と、
前記中間室の内部に設けられ、前記第1連通開口部及び第2連通開口部から流入する前記液体によって揺動し、前記第1連通開口部からの液体流入時には前記第2連通開口部の少なくとも一部及び前記第2連通開口部からの液体流入時には前記第1連通開口部の少なくとも一部の少なくとも一方を閉塞する揺動部材とを備え
前記揺動部材は、自体が前記揺動時に第1連通開口部及び第2連通開口部を閉塞する膜体であり、
前記膜体又は区画部に設けられ、前記第1連通開口部から流入する液体によって前記膜体が揺動する場合と前記第2連通開口部から流入する液体によって前記膜体が揺動する場合との何れか一方の場合にのみ区画部又は膜体に当接して該区画部と膜体との間に隙間を形成せしめ、双方の場合における該膜体による前記第1連通開口部の閉塞面積と前記第2連通開口部の閉塞面積とが異なるように前記膜体の揺動動作を規制する規制部を備えたことを特徴とする液体封入マウント装置。
In a liquid encapsulation mount device which is connected via a damping flow path and has a first liquid chamber and a second liquid chamber, each of which is filled with a liquid, and at least one of the liquid chambers is configured to be elastically deformable.
An intermediate chamber formed so as to partition both liquid chambers between the first liquid chamber and the second liquid chamber and partitioned into both the first liquid chamber and the second liquid chamber.
A first communication opening formed in the partition between the intermediate chamber and the first liquid chamber and communicating the intermediate chamber and the first liquid chamber,
A second communication opening formed in the partition between the intermediate chamber and the second liquid chamber and communicating the intermediate chamber and the second liquid chamber, and a second communication opening.
It is provided inside the intermediate chamber and swings by the liquid flowing from the first communication opening and the second communication opening, and when the liquid flows in from the first communication opening, at least the second communication opening. A rocking member that closes at least one of a part and at least a part of the first communication opening when the liquid flows in from the second communication opening is provided .
The swing member itself is a membrane body that closes the first communication opening and the second communication opening during the swing.
When the film body is swayed by the liquid which is provided in the film body or the section and flows in from the first communication opening, and when the film body is swayed by the liquid which flows in from the second communication opening. Only in one of the cases, the compartment or the membrane is abutted to form a gap between the compartment and the membrane, and in both cases, the closed area of the first communication opening by the membrane is used. A liquid-filled mounting device including a regulating portion that regulates the swinging motion of the membrane body so as to be different from the closed area of the second communication opening .
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Citations (6)

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JP2013148192A (en) 2012-01-23 2013-08-01 Tokai Rubber Ind Ltd Fluid sealing type vibration-proof device
JP2013256980A (en) 2012-06-12 2013-12-26 Tokai Rubber Ind Ltd Fluid filled vibration damping device
JP2016003665A (en) 2014-06-13 2016-01-12 株式会社ブリヂストン Vibration-proof device
JP2016138615A (en) 2015-01-28 2016-08-04 株式会社ブリヂストン Vibration control device
JP2016205606A (en) 2015-04-28 2016-12-08 山下ゴム株式会社 Antivibration device

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US20090140476A1 (en) 2007-11-30 2009-06-04 Tokai Rubber Industries, Ltd. Fluid filled type vibration damping device
JP2013148192A (en) 2012-01-23 2013-08-01 Tokai Rubber Ind Ltd Fluid sealing type vibration-proof device
JP2013256980A (en) 2012-06-12 2013-12-26 Tokai Rubber Ind Ltd Fluid filled vibration damping device
JP2016003665A (en) 2014-06-13 2016-01-12 株式会社ブリヂストン Vibration-proof device
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