JP2010169231A - Liquid sealed vibration control device - Google Patents

Liquid sealed vibration control device Download PDF

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JP2010169231A
JP2010169231A JP2009014396A JP2009014396A JP2010169231A JP 2010169231 A JP2010169231 A JP 2010169231A JP 2009014396 A JP2009014396 A JP 2009014396A JP 2009014396 A JP2009014396 A JP 2009014396A JP 2010169231 A JP2010169231 A JP 2010169231A
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flow path
liquid
vibration isolator
membrane
path member
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JP5216610B2 (en
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Yuzo Hattori
優三 服部
Naoki Maeda
直樹 前田
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Bridgestone Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid sealed vibration control device reducing an engine room without interfering with a body. <P>SOLUTION: A membrane member 5 is integrally formed with a flow passage member 8 by multiple color molding, and a base part 5a thereof forms by welding to at least an inner peripheral surface 8a of the flow passage member 8 over the whole surface. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、中心部材と、この中心部材の半径方向外側に配置された筒状部材と、これらの部材の間に配設されこれらの部材同士を連結するゴム部材と、前記中心部材の先端の軸方向外側において前記筒状部材の半径方向内側に固定された仕切り部材と、仕切り部材の前記中心部材側と反対の側に配置された膜部材と、前記ゴム部材、筒状部材および仕切り部材によって囲まれ前記中心部材および筒状部材の相対変位に伴うゴム部材の変形に応じて容積を変化させる主液室と、前記仕切り部材および前記膜部材間に形成された副液室と、主液室および副液室の間で液を移動させる周方向流路を前記筒状部材の内周面に沿って形成する環状の流路部材と、を具えた液体封入式防振装置およびその製造方法に関する。   The present invention includes a central member, a cylindrical member disposed radially outward of the central member, a rubber member disposed between these members and connecting the members, and a tip of the central member. A partition member fixed on the radially inner side of the cylindrical member on the outer side in the axial direction; a membrane member disposed on the side opposite to the central member side of the partition member; and the rubber member, the cylindrical member, and the partition member A main liquid chamber which is surrounded and changes its volume in accordance with deformation of the rubber member accompanying relative displacement of the central member and the cylindrical member; a sub liquid chamber formed between the partition member and the membrane member; and a main liquid chamber And an annular channel member that forms a circumferential channel for moving the liquid between the sub-liquid chambers along the inner peripheral surface of the cylindrical member, and a liquid-filled vibration isolator and a method for manufacturing the same .

従来から、車両の、例えばエンジンのような振動発生源から発生する振動の、振動受け側（この場合は車体）へ伝達される振動を抑えるため、上記のような液体封入式の防振装置が用いられていて、ゴム部材の振動吸収作用に加えて主液室の容積変化に伴う流路部での液の移動による共振作用と流路抵抗作用により、上記の振動を抑えるよう機能する。   Conventionally, in order to suppress vibration transmitted from a vibration generation source of a vehicle, such as an engine, to a vibration receiving side (in this case, a vehicle body), a liquid-sealed vibration isolator as described above has been provided. In addition to the vibration absorbing action of the rubber member, it functions to suppress the above-described vibration by the resonance action and the flow path resistance action caused by the movement of the liquid in the flow path part accompanying the volume change of the main liquid chamber.

このような液体封入式防振装置に対する昨今の要求の1つが、エンジンルームの小型化に伴ってその占有スペースの縮小化である。図１は、上記に記載した従来の液体封入式防振装置を示す断面図であり、液体封入式防振装置９０は、中心部材９１と、この中心部材９１の半径方向外側に配置された筒状部材９２と、これらの部材９１、９２の間に配設されこれらの部材９１、９２同士を連結するゴム部材９３と、中心部材９１の先端の軸方向外側において筒状部材９２の半径方向内側に固定された仕切り部材９４と、仕切り部材９４の中心部材９１側と反対の側に配置された膜部材９５と、ゴム部材９３、筒状部材９２および仕切り部材９４によって囲まれ中心部材９１と筒状部材９２との相対変位に伴うゴム部材９３の変形に応じて容積を変化させる主液室９６と、仕切り部材９４および膜部材９５の間に形成された副液室９７と、筒状部材９２の内側において仕切り部材９４の外周側を周方向に延在し主液室９６および副液室９７の間で液を移動させる流路を構成する流路部９８とを具えて構成されている（例えば、特許文献１参照。）。   One of the recent requirements for such a liquid-filled vibration isolator is to reduce the occupied space as the engine room becomes smaller. FIG. 1 is a cross-sectional view showing the conventional liquid-filled vibration isolator described above. A liquid-filled vibration isolator 90 includes a center member 91 and a cylinder disposed radially outside the center member 91. A cylindrical member 92, a rubber member 93 disposed between the members 91, 92 and connecting the members 91, 92, and a radially inner side of the cylindrical member 92 on the axially outer side of the distal end of the central member 91. The partition member 94 fixed to the partition member 94, the membrane member 95 disposed on the side opposite to the center member 91 side of the partition member 94, the rubber member 93, the tubular member 92, and the partition member 94 are surrounded by the center member 91 and the cylinder. A main liquid chamber 96 whose volume is changed according to deformation of the rubber member 93 accompanying relative displacement with the cylindrical member 92, a secondary liquid chamber 97 formed between the partition member 94 and the membrane member 95, and the cylindrical member 92. Partition inside The outer peripheral side of the material 94 is extended in the circumferential direction, and is configured to include a flow path portion 98 that constitutes a flow path for moving the liquid between the main liquid chamber 96 and the sub liquid chamber 97 (for example, Patent Documents). 1).

なお、以下の説明において、便宜上、仕切り部材９４から見て主液室９６側を上側、副液室９７側を下側というものとする。   In the following description, for the sake of convenience, it is assumed that the main liquid chamber 96 side is the upper side and the sub liquid chamber 97 side is the lower side when viewed from the partition member 94.

特開平１０−２５２８２８号公報JP-A-10-252828

このような従来の液体封入式防振装置９０においては、膜部材９５の基部は、筒状部材９２の内側にゴム部材９３と一体的に形成されたシール部９３ａを介して接着され、半径方向には、流路部９８の外周面近くに位置し、軸方向には流路部９８の下側に位置している。   In such a conventional liquid-filled vibration isolator 90, the base portion of the membrane member 95 is bonded to the inside of the cylindrical member 92 via a seal portion 93a formed integrally with the rubber member 93, and is thus radially Is positioned near the outer peripheral surface of the flow path portion 98 and is positioned below the flow path portion 98 in the axial direction.

このような液体封入式防振装置９０を用いてエンジン８０を支持するに際して、エンジンルームをできるだけコンパクトに設計する都合上、ボディーに接近させて液体封入式防振装置９０の中心軸を配置したいとの要求があり、具体的には、図１に示すような、ボディー干渉ラインＬを境界線としてそのエンジン側に液体封入式防振装置９０が収まるようにすることが求められている。このボディー干渉ラインＬは図示のように、上側から下側に向かって液体封入式防振装置９０の中心軸Ｃに近づくよう傾斜したラインである。   When the engine 80 is supported using such a liquid-filled vibration isolator 90, the central axis of the liquid-filled vibration isolator 90 should be arranged close to the body for the sake of convenience in designing the engine room as compact as possible. Specifically, as shown in FIG. 1, it is required that the liquid-filled vibration isolator 90 be accommodated on the engine side with the body interference line L as a boundary line. As shown in the figure, the body interference line L is a line inclined from the upper side to the lower side so as to approach the central axis C of the liquid-filled vibration isolator 90.

そして、従来の液体封入式防振装置９０にあっては、その下側部分の径がＤ１と大きいため、ボディー干渉ラインＬと干渉しないようにするには、液体封入式防振装置９０を上側にずらす必要があり、その分、基準面Ｇから中心部材上端まだの高さがＨ１とするように、エンジンを高い位置に配置せざるを得ず、結局はエンジンルームを十分に小さくできないという問題があった。   In the conventional liquid-filled vibration isolator 90, since the diameter of the lower portion thereof is as large as D1, in order not to interfere with the body interference line L, the liquid-filled vibration isolator 90 is placed on the upper side. The engine must be placed at a high position so that the height of the upper end of the central member from the reference plane G is H1, and eventually the engine room cannot be made sufficiently small. was there.

本発明は、このような問題に鑑みてなされたものであり、ボディーと干渉することなくエンジンルームを縮小させることのできる、液体封入式防振装置９０を提供することを目的とする。   The present invention has been made in view of such problems, and an object of the present invention is to provide a liquid-filled vibration isolator 90 that can reduce the engine room without interfering with the body.

＜１＞は、中心部材と、この中心部材の半径方向外側に配置された筒状部材と、これらの部材の間に配設されこれらの部材同士を連結するゴム部材と、前記中心部材の先端の軸方向外側において前記筒状部材の半径方向内側に固定された仕切り部材と、仕切り部材の前記中心部材側と反対の側に配置された膜部材と、前記ゴム部材、筒状部材および仕切り部材によって囲まれ前記中心部材および筒状部材の相対変位に伴うゴム部材の変形に応じて容積を変化させる主液室と、前記仕切り部材および前記膜部材間に形成された副液室と、主液室および副液室の間で液を移動させる周方向流路を前記筒状部材の内周面に沿って形成する環状の流路部材と、を具えた液体封入式防振装置において、
前記膜部材は前記流路部材に対して多色成形によって一体的に形成されるとともに、その基部は、流路部材の少なくとも内周面の全面に溶着されてなることを特徴とする液体封入式防振装置である。 <1> is a central member, a cylindrical member disposed on the outer side in the radial direction of the central member, a rubber member disposed between these members and connecting these members, and a tip of the central member A partition member fixed on the radially inner side of the cylindrical member on the axially outer side of the cylindrical member, a membrane member disposed on the side of the partition member opposite to the central member side, the rubber member, the cylindrical member, and the partition member A main liquid chamber which is surrounded by the central member and the volume of the rubber member is changed in accordance with the relative displacement of the cylindrical member, a sub liquid chamber formed between the partition member and the membrane member, and a main liquid In a liquid-filled vibration isolator comprising an annular flow path member that forms a circumferential flow path that moves liquid between the chamber and the auxiliary liquid chamber along the inner peripheral surface of the cylindrical member,
The membrane member is integrally formed with the flow path member by multicolor molding, and a base part thereof is welded to at least the entire inner peripheral surface of the flow path member. It is a vibration isolator.

＜２＞は、＜１＞において、前記流路部材は、半径側外側部分が内側部分より軸方向外側に凸となる凸部が設けられた軸方向端面を具えることを特徴とする液体封入式防振装置である。   <2> In <1>, the flow path member includes an axial end face provided with a convex portion in which a radially outer portion protrudes axially outward from an inner portion. Type vibration isolator.

＜３＞は、＜１＞もしくは＜２＞において、前記内周部材の内周面は凹凸のない円筒面であることを特徴とする液体封入式防振装置である。   <3> is the liquid-filled vibration isolator according to <1> or <2>, wherein the inner peripheral surface of the inner peripheral member is a cylindrical surface without unevenness.

＜４＞は、＜１＞〜＜３＞のいずれかにおいて、前記膜部材は、前記流路部材の軸方向端面の一方と、この軸方向端面からさらに半径方向外側に続く外周面部分にも溶着されてなる液体封入式防振装置である。   <4> is any one of <1> to <3>, wherein the membrane member is also provided on one of the axial end surfaces of the flow path member and on the outer peripheral surface portion further extending radially outward from the axial end surface. This is a liquid-sealed vibration isolator formed by welding.

＜５＞は、＜４＞において、前記凸部が前記流路部材の軸方向端面の他方に設けられていることを特徴とする液体封入式防振装置である。   <5> is the liquid-filled type vibration damping device according to <4>, wherein the convex portion is provided on the other end surface in the axial direction of the flow path member.

＜６＞は、＜１＞〜＜５＞のいずれかの液体封入式防振装置を製造する方法において、前記流路部材および前記膜部材を多色成形によって一体的に形成するとともに、流路部材を成形したあと、前記膜部材を成形することにより、前記膜部材を、前記流路部材の少なくとも内周面の全面に溶着させることを特徴とする液体封入式防振装置の製造方法である。   <6> is a method of manufacturing the liquid-filled vibration isolator according to any one of <1> to <5>, wherein the flow path member and the film member are integrally formed by multicolor molding, and the flow path A method for manufacturing a liquid filled type vibration damping device, wherein after forming a member, the film member is formed to weld the film member to at least the entire inner peripheral surface of the flow path member. .

＜７＞は、＜６＞において、固定型に対して、第１可動型を近づけて形成される第１のキャビティに第１の材料を注入して流路部材を形成したあと、第１可動型を遠ざけたあと、第２可動型を近づけ第２のキャビティを形成し、第２のキャビティに第１の材料を注入して前記膜部材を成形するとともにこれを流路部材に溶着させることを特徴とする液体封入式防振装置の製造方法である。   <7> is the first movable after the first material is injected into the first cavity formed by bringing the first movable mold closer to the fixed mold in <6> to form the flow path member. After moving the mold away, the second movable mold is moved closer to form a second cavity, the first material is injected into the second cavity to mold the film member, and this is welded to the flow path member. It is the manufacturing method of the liquid enclosure type vibration isolator characterized by the above-mentioned.

＜１＞によれば、前記膜部材は前記流路部材に対して多色成形によって一体的に形成されるとともに、その基部は、流路部材の少なくとも内周面の全面に融着されてなるので、詳細を後述するように、中心軸がボディー干渉ラインと近くなる液体封入式防振装置の下側部分の径を小さくすることができ、これによって、液体封入式防振装置を上側にずらす必要がなくなり、エンジンルームの縮小化に寄与させることができる。
さらに、この発明によれば、前記膜部材は前記流路部材に対して多色成形によって融着されるので、工程が簡素化されまた接着剤が不要となるのでコストを低減することができるとともに、これらの部材の接着性を高めることができる。 According to <1>, the membrane member is integrally formed with the flow path member by multicolor molding, and a base portion thereof is fused to at least the entire inner peripheral surface of the flow path member. Therefore, as will be described in detail later, the diameter of the lower part of the liquid-filled vibration isolator whose central axis is close to the body interference line can be reduced, and thereby the liquid-filled vibration isolator is shifted upward. This is unnecessary and can contribute to the reduction of the engine room.
Furthermore, according to the present invention, since the membrane member is fused to the flow path member by multicolor molding, the process is simplified and an adhesive is not required, so that the cost can be reduced. The adhesion of these members can be improved.

＜２＞によれば、前記流路部材は、半径側外側部分が内側部分より軸方向外側に凸となる凸部が設けられた軸方向端面を具えるので、詳細を後述するように、固定型に対して第１可動型を近づけて形成される第１のキャビティに第１の材料を注入して流路部材を形成したあと、第１可動型を遠ざけ、その後、第２可動型を固定型に近づけて第２のキャビティを形成し、第２のキャビティに第２の材料を注入して前記膜部材を成形すると同時に流路部材に融着させる工程において、流路部材を形成したあと第２可動型を再び固定型に近づけるまでの間に流路部材が収縮するのを抑えることができ、形成済みの流路部材に第２可動型が干渉しにくくし、また、流路部材の内周面に融着される膜部材部分の肉厚のばらつきを抑制することができる。   According to <2>, the flow path member includes an axial end face provided with a convex portion whose outer portion on the radial side is convex outward in the axial direction from the inner portion, and is fixed as described in detail later. After the first material is injected into the first cavity formed close to the mold to form the flow path member, the first movable mold is moved away, and then the second movable mold is fixed. In the step of forming the second cavity close to the mold, injecting the second material into the second cavity to mold the membrane member, and simultaneously fusing it to the flow channel member, after forming the flow channel member, 2 It is possible to suppress the shrinkage of the flow path member until the movable mold is again brought closer to the fixed mold, making it difficult for the second movable mold to interfere with the formed flow path member. Variation in the thickness of the film member portion fused to the peripheral surface can be suppressed.

＜３＞によれば、前記流路部材の内周面は凹凸のない円筒面としたので、膜部材の内周面に融着される部分の肉厚を軸方向に沿って一定にすることができ、必要最小限の肉厚を付与することができる。   According to <3>, since the inner peripheral surface of the flow path member is a cylindrical surface without unevenness, the thickness of the portion fused to the inner peripheral surface of the membrane member is made constant along the axial direction. And the minimum necessary wall thickness can be imparted.

＜４＞によれば、前記膜部材は、前記流路部材の軸方向端面の一方と、この軸方向端面からさらに半径方向外側に続く外周面部分とにも融着されているので、前記膜部材と、前記流路部材との結合を高め、膜部材が流路部材から剥がれるのを防止する効果をより高めることができる。   According to <4>, since the membrane member is also fused to one of the axial end surfaces of the flow path member and an outer peripheral surface portion that extends further radially outward from the axial end surface, The effect of preventing the membrane member from being peeled off from the flow path member can be further enhanced by increasing the coupling between the member and the flow path member.

＜５＞によれば、前記凸部が前記流路部材の軸方向端面の他方に設けられているので、前記凸部の形成と、前記膜部材の、前記記流路部材の軸方向端面のへの融着との両立を可能にしやすくなる。   According to <5>, since the convex portion is provided on the other of the axial end surfaces of the flow path member, the formation of the convex portion and the axial end surface of the flow path member of the membrane member It becomes easy to make it possible to achieve coexistence with fusion.

＜６＞によれば、前記流路部材および前記膜部材を多色成形によって一体的に形成するとともに、流路部材を成形したあと、前記膜部材を成形することにより、前記膜部材を、前記流路部材の少なくとも内周面の全面に融着させるので、多色成形が可能となるとともに、＜１＞の発明についての効果を説明したように、エンジンルームの縮小化に寄与させることができる。   According to <6>, the channel member and the membrane member are integrally formed by multicolor molding, and after the channel member is molded, the membrane member is molded, Since it is fused to at least the entire inner peripheral surface of the flow path member, multicolor molding becomes possible, and as described for the effect of the invention <1>, it can contribute to the reduction of the engine room. .

＜７＞によれば、固定型に対して第１可動型を近づけて形成される第１のキャビティに第１の材料を注入して流路部材を形成したあと、第１可動型を遠ざけ、その後、第２可動型を固定型に近づけて第２のキャビティを形成し、第２のキャビティに第２の材料を注入して前記膜部材を成形すると同時に流路部材に融着させるので、金型のコストを低減するとともに、流路部材を形成した後すぐに膜部材を形成・融着することができる。   According to <7>, after injecting the first material into the first cavity formed by bringing the first movable mold closer to the fixed mold to form the flow path member, the first movable mold is moved away, After that, the second movable mold is brought close to the fixed mold to form the second cavity, the second material is injected into the second cavity and the film member is molded and simultaneously fused to the flow path member. The cost of the mold can be reduced, and the membrane member can be formed and fused immediately after the flow path member is formed.

従来の液体封入式防振装置を示す断面図である。It is sectional drawing which shows the conventional liquid enclosure type vibration isolator. 本発明に係る実施形態の液体封入式防振装置を示す断面図である。It is sectional drawing which shows the liquid enclosure type vibration isolator of embodiment which concerns on this invention. 本発明の液体封入式防振装置を製造するに際し、流路部材および膜部材を形成するのに用いる金型の状態を示す断面図である。It is sectional drawing which shows the state of the metal mold | die used in forming a flow path member and a film | membrane member in manufacturing the liquid enclosure type vibration isolator of this invention. 図３に示した状態の後の金型の状態を示す断面図である。It is sectional drawing which shows the state of the metal mold | die after the state shown in FIG. 図４に示した状態の後の金型の状態を示す断面図である。It is sectional drawing which shows the state of the metal mold | die after the state shown in FIG. 図５に示した状態の後の金型の状態を示す断面図である。It is sectional drawing which shows the state of the metal mold | die after the state shown in FIG. 本発明に係る実施形態の液体封入式防振装置を示す断面図である。It is sectional drawing which shows the liquid enclosure type vibration isolator of embodiment which concerns on this invention. 本発明に係る実施形態の液体封入式防振装置を示す断面図である。It is sectional drawing which shows the liquid enclosure type vibration isolator of embodiment which concerns on this invention.

本発明の実施形態について図に基づいて説明する。図２は実施形態の液体封入式防振装置をその中心軸を通る断面において示す断面図であり、液体封入式防振装置１０は、軸方向中心に位置する中心部材１と、この中心部材１の半径方向外側に配置された筒状部材２と、これらの部材１、２の間に配設されこれらの部材１、２同士を連結するゴム部材３と、中心部材１の先端１ａの軸方向外側において筒状部材２の半径方向内側に固定された仕切り部材４と、仕切り部材４の中心部材１側（上側）と反対の側（下側）に配置された膜部材５と、ゴム部材３、筒状部材２および仕切り部材４によって囲まれ中心部材１および筒状部材２の相対変位に伴うゴム部材３の変形に応じて容積を変化させる主液室６と、仕切り部材４および膜部材５間に形成された副液室７と、主液室６および副液室７の間で液を移動させる周方向流路１５を前記筒状部材の内周面に沿って形成する環状の流路部８とを具えて構成される。   Embodiments of the present invention will be described with reference to the drawings. FIG. 2 is a cross-sectional view showing the liquid-filled vibration isolator of the embodiment in a cross section passing through the central axis thereof. The liquid-filled vibration isolator 10 includes a central member 1 located at the center in the axial direction and the central member 1. A cylindrical member 2 disposed on the outer side in the radial direction, a rubber member 3 disposed between the members 1 and 2 and connecting the members 1 and 2 to each other, and an axial direction of the tip 1a of the center member 1 A partition member 4 fixed on the inside in the radial direction of the tubular member 2 on the outside, a membrane member 5 disposed on the side (upper side) opposite to the central member 1 side (upper side) of the partition member 4, and a rubber member 3 The main liquid chamber 6 which is surrounded by the cylindrical member 2 and the partition member 4 and whose volume is changed according to the deformation of the rubber member 3 accompanying the relative displacement of the central member 1 and the cylindrical member 2, the partition member 4 and the membrane member 5. The sub liquid chamber 7 formed between the main liquid chamber 6 and the sub liquid chamber 7 In configured circumferential channel 15 for moving the liquid comprises an annular flow path portion 8 formed along the inner peripheral surface of the tubular member.

この液体封入式防振装置１０は、その特徴として、膜部材５は流路部材８に対して多色成形によって一体的に形成されるとともに、その基部５ａは、流路部材８の少なくとも内周面８ａの全面に融着されていて、この構成により、中心軸Ｃがボディー干渉ラインＬと近くなる液体封入式防振装置１０の下側部分の径をＤ２と小さくすることができ、図１と図２とを比べて見て分かる通り、液体封入式防振装置１０を上側にずらす必要がなくなり、中心軸Ｃとボディー干渉ラインＬとの関係を一定にしたとき、基準線Ｇからの中心部材上端までの高さを、Ｈ１より小さいＨ２とすることができ、エンジンルームの縮小化に寄与させることができる。   The liquid-filled vibration isolator 10 is characterized in that the membrane member 5 is integrally formed with the flow path member 8 by multicolor molding, and the base portion 5 a is at least the inner periphery of the flow path member 8. The surface 8a is fused to the entire surface. With this configuration, the diameter of the lower portion of the liquid-filled vibration isolator 10 in which the central axis C is close to the body interference line L can be reduced to D2. 2 and FIG. 2, it is not necessary to shift the liquid-filled vibration isolator 10 upward, and when the relationship between the center axis C and the body interference line L is constant, the center from the reference line G The height to the upper end of the member can be H2, which is smaller than H1, and can contribute to the reduction of the engine room.

ここで、流路部材８は、半径側外側部分が内側部分より軸方向外側に凸となる凸部１８が設けられた軸方向端面８ｃを具えるのが好ましく、このことによって、この液体封入式防振装置１０について説明するように、流路部材８と膜部材５との多色成型が可能となり、また、流路部材８の内周面８ａに融着される膜部材部分５ｂの肉厚のばらつきを抑制することができる。   Here, the flow path member 8 preferably includes an axial end face 8c provided with a convex portion 18 having a radially outer portion convex outward in the axial direction from the inner portion. As described for the vibration isolator 10, multi-color molding of the flow path member 8 and the film member 5 is possible, and the thickness of the film member portion 5b fused to the inner peripheral surface 8a of the flow path member 8 is increased. Can be suppressed.

流路部材の内周面は凹凸のない円筒面とするのが一層好ましく、このことによって膜部材の内周面に融着される部分の肉厚を軸方向に沿って一定にすることができ、必要にして最小限の肉厚を付与することが可能となる。   It is more preferable that the inner peripheral surface of the flow path member is a cylindrical surface without unevenness, and this makes it possible to make the thickness of the portion fused to the inner peripheral surface of the membrane member constant along the axial direction. It is possible to provide a minimum wall thickness as required.

また、膜部材５は、流路部材８の軸方向端面の一方８ｂと、この軸方向端面８ｂからさらに半径方向外側に続く外周面部分８ｄとにも融着されているのがさらに好ましく、このことによって、膜部材５と、流路部材８との結合を高め、膜部材５が流路部材８から剥がれるのを防止する効果をより高めることができる。   Further, the membrane member 5 is more preferably fused also to one of the axial end faces 8b of the flow path member 8 and the outer peripheral surface portion 8d extending further radially outward from the axial end face 8b. By this, the coupling | bonding with the film | membrane member 5 and the flow-path member 8 can be improved, and the effect which prevents that the film | membrane member 5 peels from the flow-path member 8 can be heightened more.

上記のように構成された液体封入式防振装置１０に関し、その製造方法においても流路部材８と膜部材５とを予め多色成形によって一体的に形成する点に特徴があり、この点について以下に説明する。なお、これによって形成された流路部材８と膜部材５とよりなる部材を多色成形体２０と呼ぶこととする。   Regarding the liquid filled type vibration isolator 10 configured as described above, the manufacturing method is characterized in that the flow path member 8 and the membrane member 5 are integrally formed in advance by multicolor molding. This will be described below. Note that a member formed of the flow path member 8 and the film member 5 is referred to as a multicolor molded body 20.

多色成形体２０を形成するには、図３に示すように、固定型２１に、第１可動型２２と、互いに接近した状態で環状をなす複数のセグメントよりなる第３可動型２４とを近づけて、固定型２１、第１可動型２２、および、第３可動型２４よりなる金型を閉止したあと、これらの型２１、２２、２４に囲まれた第１キャビティ３１に流路部材８を成形するための第１の材料を注入・硬化させて流路部材８を形成し、その後、図４に示すように、固定型２１から第１可動型２２および第３可動型２４を遠ざける。   In order to form the multicolor molded body 20, as shown in FIG. 3, a fixed mold 21 is provided with a first movable mold 22 and a third movable mold 24 composed of a plurality of segments that form an annular shape in close proximity to each other. After closing the mold composed of the fixed mold 21, the first movable mold 22, and the third movable mold 24, the flow path member 8 enters the first cavity 31 surrounded by these molds 21, 22, 24. The flow path member 8 is formed by injecting and curing the first material for molding the first and second movable molds 22 and 24 are moved away from the fixed mold 21 as shown in FIG.

次いで、図５に示すように、成形された流路部材８を固定型２１に残したまま、固定型２１に第２可動型２３をを近づけて、固定型２１および第２可動型２３よりなる金型を閉止したあと、これらの型２１、２２および、流路部材８に囲まれたキャビティ３２に膜部材５を成形するための第２の材料を注入・硬化させて膜部材５を形成し、その後、図６に示すように、固定型から第１可動型２２を遠ざけて金型を開く。   Next, as shown in FIG. 5, the second movable mold 23 is brought close to the fixed mold 21 while the molded flow path member 8 remains in the fixed mold 21, and the fixed mold 21 and the second movable mold 23 are formed. After closing the mold, the film member 5 is formed by injecting and curing a second material for forming the film member 5 into the cavities 32 surrounded by the molds 21 and 22 and the flow path member 8. Then, as shown in FIG. 6, the mold is opened by moving the first movable mold 22 away from the fixed mold.

図示のあと、エジェクターピン等で、流路部材８と膜部材５とよりなる部材を多色成形体２０を固定型２１より取り出して多色成形体２０の形成が完了する。取り出された多色成形体２０を、図７、８に斜視図で示す。このあと、多色成形体２０を他の部材と組み合わせて液体封入式防振装置１０を形成する。   After the illustration, the member composed of the flow path member 8 and the membrane member 5 is taken out from the fixed mold 21 with an ejector pin or the like to complete the formation of the multicolor molded body 20. The taken out multicolor molded body 20 is shown in perspective views in FIGS. Thereafter, the liquid-filled vibration isolator 10 is formed by combining the multicolor molded body 20 with other members.

以上の説明において、流路部材８の軸方向端面の他方に対応する固定型２１の面の半径方向内側を外側より凸にして金型凸部２６を形成することにより、図４のように、第１可動型２２を固定型２１から遠ざけたとき、成型された流路部材８が収縮によって径小に変形し、このあと固定型２１に近接される第２可動型２３と、流路部材８が干渉するのを防止することができる。   In the above description, by forming the mold convex portion 26 by projecting the radially inner side of the surface of the fixed mold 21 corresponding to the other of the axial end surfaces of the flow path member 8 from the outer side, as shown in FIG. When the first movable mold 22 is moved away from the fixed mold 21, the molded flow path member 8 is deformed to a small diameter by contraction, and then the second movable mold 23 that is close to the fixed mold 21 and the flow path member 8. Can be prevented from interfering with each other.

第２可動型２３の外径を小さくすれば、この干渉をさけることはできるが、膜部材５の厚さが必要以上に厚くなってしまう。   If the outer diameter of the second movable mold 23 is reduced, this interference can be avoided, but the thickness of the film member 5 becomes larger than necessary.

また、金型凸部２６がない場合には、条件や環境によって収縮の程度が変化し、流路部材８の内周面８ａに融着される膜部材部分５ａの厚さがばらついてしまう。   Further, when there is no mold convex portion 26, the degree of shrinkage changes depending on conditions and environments, and the thickness of the film member portion 5a fused to the inner peripheral surface 8a of the flow path member 8 varies.

また、図５において、固定型２１と第２可動型２３とを近づけた金型閉止状態において、流路部材８の軸方向一方の面８ｂと第２可動型との間に空間を設けるようにすることによって、膜部材５を、流路部材８の軸方向端面の一方８ｂとこの軸方向端面８ｂからさらに半径方向外側に続く外周面部分８ｄにも融着させることができ、これらの部材５、８を強固に結合することができる。   In FIG. 5, a space is provided between the axially one surface 8 b of the flow path member 8 and the second movable mold in a closed state where the fixed mold 21 and the second movable mold 23 are close to each other. By doing so, the membrane member 5 can be fused also to one of the axial end surfaces 8b of the flow path member 8 and the outer peripheral surface portion 8d that extends further radially outward from the axial end surface 8b. , 8 can be firmly bonded.

本発明に係る液体封入式防振装置は、自動車のエンジンマウントやボディマウントとして用いることができる。   The liquid filled type vibration damping device according to the present invention can be used as an engine mount or body mount of an automobile.

１ 中心部材
１ａ 中心部材の先端
２ 筒状部材
３ ゴム部材
４ 仕切り部材
４ａ 仕切り部材の外周面
５ 膜部材
５ａ 膜部材の基部
５ｂ 流路部材の内周面に融着される膜部材部分
６ 主液室
７ 副液室
８ 流路部材
８ａ 流路部材の内周面
８ｂ、８ｃ 流路部材の軸方向端面
８ｄ 流路部材の外周面
１０ 液体封入式防振装置
１５ 周方向流路
１８ 流路部材の凸部
２０ 多色成形体
２１ 固定型
２２ 第一可動型
２３ 第二可動型
２４ 第三可動型
２６ 金型凸部
３１ 第一キャビティ
３２ 第二キャビティ
Ｃ 液体封入式防振装置の中心軸
Ｌ ボディー干渉ライン DESCRIPTION OF SYMBOLS 1 Center member 1a Tip of center member 2 Cylindrical member 3 Rubber member 4 Partition member 4a Outer peripheral surface of partition member 5 Membrane member 5a Base of membrane member 5b Membrane member portion fused to inner peripheral surface of flow path member 6 Main Liquid chamber 7 Sub liquid chamber 8 Channel member 8a Channel member inner peripheral surface 8b, 8c Channel member axial end surface 8d Channel member outer peripheral surface 10 Liquid-filled vibration isolator 15 Circumferential channel 18 Channel Convex part 20 Multicolor molded body 21 Fixed mold 22 First movable mold 23 Second movable mold 24 Third movable mold 26 Mold convex part 31 First cavity 32 Second cavity C Center axis of liquid-filled vibration isolator L Body interference line

Claims (7)

中心部材と、この中心部材の半径方向外側に配置された筒状部材と、これらの部材の間に配設されこれらの部材同士を連結するゴム部材と、前記中心部材の先端の軸方向外側において前記筒状部材の半径方向内側に固定された仕切り部材と、仕切り部材の前記中心部材側と反対の側に配置された膜部材と、前記ゴム部材、筒状部材および仕切り部材によって囲まれ前記中心部材および筒状部材の相対変位に伴うゴム部材の変形に応じて容積を変化させる主液室と、前記仕切り部材および前記膜部材間に形成された副液室と、主液室および副液室の間で液を移動させる周方向流路を前記筒状部材の内周面に沿って形成する環状の流路部材と、を具えた液体封入式防振装置において、
前記膜部材は前記流路部材に対して多色成形によって一体的に形成されるとともに、その基部は、流路部材の少なくとも内周面の全面に溶着されてなることを特徴とする液体封入式防振装置。 A central member, a cylindrical member disposed on the radially outer side of the central member, a rubber member disposed between the members and connecting the members, and an axially outer side of the tip of the central member A partition member fixed on the radially inner side of the tubular member, a membrane member disposed on the side opposite to the central member side of the partition member, and the center surrounded by the rubber member, the tubular member, and the partition member A main liquid chamber whose volume is changed in accordance with the deformation of the rubber member accompanying relative displacement of the member and the cylindrical member, a sub liquid chamber formed between the partition member and the membrane member, and a main liquid chamber and a sub liquid chamber In a liquid-filled vibration isolator comprising an annular flow path member that forms a circumferential flow path that moves liquid between the inner circumferential surface of the cylindrical member,
The membrane member is integrally formed with the flow path member by multicolor molding, and a base part thereof is welded to at least the entire inner peripheral surface of the flow path member. Anti-vibration device. 前記流路部材は、半径側外側部分が内側部分より軸方向外側に凸となる凸部が設けられた軸方向端面を具えることを特徴とする請求項１に記載の液体封入式防振装置。   2. The liquid-filled vibration isolator according to claim 1, wherein the flow path member includes an axial end face provided with a convex portion in which a radially outer portion protrudes axially outward from an inner portion. . 前記内周部材の内周面は凹凸のない円筒面であることを特徴とする請求項１もしくは２に記載の液体封入式防振装置。   The liquid-filled vibration isolator according to claim 1 or 2, wherein the inner peripheral surface of the inner peripheral member is a cylindrical surface without unevenness. 前記膜部材は、前記流路部材の軸方向端面の一方と、この軸方向端面からさらに半径方向外側に続く外周面部分にも溶着されてなる請求項１〜３のいずれかに記載の液体封入式防振装置。   The liquid sealing according to any one of claims 1 to 3, wherein the membrane member is also welded to one of the axial end surfaces of the flow path member and an outer peripheral surface portion that extends further radially outward from the axial end surface. Type vibration isolator. 前記凸部が前記流路部材の軸方向端面の他方に設けられていることを特徴とする請求項４に記載の液体封入式防振装置。   The liquid-filled vibration isolator according to claim 4, wherein the convex portion is provided on the other end surface in the axial direction of the flow path member. 請求項１〜５の液体封入式防振装置を製造する方法において、前記流路部材および前記膜部材を多色成形によって一体的に形成するとともに、流路部材を成形したあと、前記膜部材を成形することにより、前記膜部材を、前記流路部材の少なくとも内周面の全面に溶着させることを特徴とする液体封入式防振装置の製造方法。   6. The method of manufacturing a liquid-filled vibration isolator according to claim 1, wherein the flow path member and the membrane member are integrally formed by multicolor molding, and after forming the flow path member, the film member is A method for manufacturing a liquid filled type vibration damping device, wherein the film member is welded to at least the entire inner peripheral surface of the flow path member by molding. 固定型に対して、第１可動型を近づけて形成される第１のキャビティに第１の材料を注入して流路部材を形成したあと、第１可動型を遠ざけたあと、第２可動型を近づけ第２のキャビティを形成し、第２のキャビティに第１の材料を注入して前記膜部材を成形するとともにこれを流路部材に溶着させることを特徴とする請求項６に記載の液体封入式防振装置の製造方法。   After the first material is injected into the first cavity formed by bringing the first movable mold closer to the fixed mold to form the flow path member, the first movable mold is moved away, and then the second movable mold 7. The liquid according to claim 6, wherein a second cavity is formed close to the first cavity, and the first material is injected into the second cavity to mold the membrane member and weld it to the flow path member. Manufacturing method of enclosed vibration isolator.
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