JP5519243B2

JP5519243B2 - Liquid-sealed vibration isolator and method for manufacturing liquid-filled vibration isolator

Info

Publication number: JP5519243B2
Application number: JP2009247179A
Authority: JP
Inventors: 正明大橋
Original assignee: Bridgestone Corp
Current assignee: Bridgestone Corp
Priority date: 2009-10-28
Filing date: 2009-10-28
Publication date: 2014-06-11
Anticipated expiration: 2029-10-28
Also published as: JP2011094653A

Description

この発明は、筒状部材の一端側を、コア部材の外周面に液密に連結する弾性部材と、筒状部材の他端側に液密に連結した蓋部材とによって形成される空間内に液体を封入してなる液封入式防振装置に関し、とくには、その防振装置の製造時において、各構成部材を液体中で組み合わせて、弾性部材と蓋部材とにより形成される空間内に液体を充満させた状態で、たとえば、筒状部材を蓋部材にかしめ固定した場合に、それらの部材の連結部分間に意図せず封入される液体の、時間の経過に伴う漏出を防止する技術を提案するものである。 The present invention provides a space formed by an elastic member that liquid-tightly connects one end side of the cylindrical member to the outer peripheral surface of the core member, and a lid member that is liquid-tightly connected to the other end side of the cylindrical member. The present invention relates to a liquid-filled vibration isolator that encloses a liquid, and in particular, at the time of manufacturing the vibration isolator, the components are combined in the liquid so that the liquid is contained in a space formed by the elastic member and the lid member. For example, when a cylindrical member is caulked and fixed to a lid member in a state in which the liquid is filled, a technique for preventing leakage of liquid that is unintentionally sealed between the connecting portions of these members over time. It is what we propose.

この種の防振装置は、内部の空間内に非圧縮性の液体を封入した流体室を、仕切部材で主液室と副液室とに区画し、それらの両液室の相互を制限通路で連通させることによって、振動発生側と振動伝達側との間に配設したこの防振装置への振動の入力に対し、内部の液体が、制限通路を介して主液室と副液室との間で流動するときの液柱共振、制限通路が液体に及ぼす流動抵抗等によって振動を減衰させ、また、構成各部の変形をもって、振動の伝達を防止するものである。 In this type of vibration isolator, a fluid chamber in which an incompressible liquid is sealed in an internal space is divided into a main liquid chamber and a sub liquid chamber by a partition member, and a restriction passage is formed between the two liquid chambers. In response to the vibration input to the vibration isolator disposed between the vibration generation side and the vibration transmission side, the liquid in the interior is connected to the main liquid chamber and the sub liquid chamber via the restriction passage. The vibration is attenuated by the liquid column resonance when the fluid flows between them, the flow resistance exerted on the liquid by the restricting passage, and the transmission of the vibration is prevented by the deformation of each component.

ところで、このような液封入式防振装置の製造に際しては、所望の振動減衰機能を発揮させるため、内部の液室に液体を封入する際の、空気の混入の防止を目的として、たとえば図１０に断面図で示す防振装置では、筒状部材５２と、仕切部材５３と、剛性環状部材５４およびダイヤフラム５５からなる蓋部材５６とを液体中で順次組み合わせて、内部の液室５７を液体で充満させた状態で、筒状部材５２および剛性環状部材５４のそれぞれに形成したフランジ状の部分５８、５９の一方、図ではフランジ状部分５８を、他方のフランジ状部分５９を包み込むように折り返して塑性変形させて、他方のフランジ状部分５９上に密着固定すること（以下「かしめ固定」という）により、筒状部材５２を蓋部材５６に連結させることが一般的に行われている。 By the way, in manufacturing such a liquid-filled vibration isolator, for the purpose of preventing air from entering when a liquid is sealed in an internal liquid chamber in order to exhibit a desired vibration damping function, for example, FIG. In the anti-vibration device shown in the sectional view, the cylindrical member 52, the partition member 53, and the lid member 56 made up of the rigid annular member 54 and the diaphragm 55 are sequentially combined in the liquid, so that the liquid chamber 57 inside is liquid. In the filled state, one of the flange-like portions 58 and 59 formed in the cylindrical member 52 and the rigid annular member 54, respectively, in the drawing, the flange-like portion 58 is folded back so as to wrap around the other flange-like portion 59. Generally, the cylindrical member 52 is connected to the lid member 56 by being plastically deformed and firmly fixed on the other flange-like portion 59 (hereinafter referred to as “caulking and fixing”). It has been.

そして、筒状部材５２の、蓋部材５６へのかかる連結によれば、図１１にその連結部分を拡大断面図で示すように、フランジ状部分５８の折返し変形部５８Ａと、他方のフランジ状部分５９との間の僅かな閉空間６０に液体が残留することになるため、防振装置５１を製品として使用するうちに、その閉空間６０に残留した液体が装置５１の外部に漏れ出す場合があり、このことが、シール部材６１のシール機能に問題があるとの誤認の要因となることがあった。 Then, according to the connection of the cylindrical member 52 to the lid member 56, as shown in FIG. 11 in an enlarged sectional view, the folded deformation portion 58A of the flange-shaped portion 58 and the other flange-shaped portion. Since the liquid remains in the slight closed space 60 with respect to 59, the liquid remaining in the closed space 60 may leak out of the device 51 while the vibration isolator 51 is used as a product. In some cases, this may cause a misconception that there is a problem with the sealing function of the sealing member 61.

この問題を解決するため、特許文献１には、「金具のかしめ重合部間に貯った液体を排出する溝を、かしめ重合部の内外を繋ぐように一対の本体金具の内の被かしめ側本体金具の表面に形成した」防振装置が提案されており、具体的には、図１２に示すように、立上部２２Ａの外周側に、適宜間隔で放射方向に浅溝５６が形成された防振装置が開示されている。
特許文献１に記載されたこの防振装置では、「組み付け後に立上部２２Ａとかしめ部１２Ｃとの間に封入された液体が直ちにこの端部５６Ａを通じて外部へ排出することになる。このため経時的な液体の滲み出しがない。」としている。 In order to solve this problem, Patent Document 1 states that “the groove for discharging the liquid accumulated between the caulking overlapping portions of the metal fittings, the caulking side in the pair of body fittings so as to connect the inside and outside of the caulking overlapping portions. A vibration isolator formed on the surface of the metal shell has been proposed. Specifically, as shown in FIG. 12, shallow grooves 56 are formed in the radial direction at appropriate intervals on the outer peripheral side of the upright portion 22A. An anti-vibration device is disclosed.
In this vibration isolator described in Patent Document 1, “the liquid sealed between the upright portion 22A and the caulking portion 12C after assembly is immediately discharged to the outside through the end portion 56A. No liquid oozes out. "

特許第２７８５９４９号公報Japanese Patent No. 2785949

しかしながら、特許文献１に記載された防振装置では、「かしめ部１２Ｃ」がかしめ付けられる、「支持板２２」のフランジ状部分に、複数の「浅溝５６」を形成していることから、かしめ具合によっては、「浅溝５６」が閉塞されるおそれがあり、この場合には、「立上部２２」と「かしめ部１２Ｃ」との間に封入された液体が、「端部５６Ａ」から直ちには排出されないという問題があった他、相互連結される二つの部材の接触部分に「浅溝５６」が設けられていることから、かしめ固定による、それらの部材の相互連結が十分強固になされていることの保証がないという問題もあった。 However, in the vibration isolator described in Patent Document 1, a plurality of “shallow grooves 56” are formed in the flange-like portion of the “support plate 22” to which the “caulking portion 12C” is caulked. Depending on the degree of caulking, the “shallow groove 56” may be blocked. In this case, the liquid sealed between the “rising portion 22” and the “caulking portion 12C” is discharged from the “end portion 56A”. In addition to the problem of not being ejected immediately, the “shallow groove 56” is provided at the contact portion between the two members to be interconnected, so that these members are interconnected sufficiently firmly by caulking. There was also a problem that there was no guarantee that.

そこで、この発明は、従来技術が抱えるこのような問題を解決することを課題とするものであり、それの目的とするところは、かしめ固定による、部材の相互連結を強固なものとしてなお、防振装置の製造時に、連結部分に形成される閉空間内に残留する液体を、確実かつ迅速に排出させて、その閉空間からの経時的な液体の漏出を防止することができる液封入式防振装置および、液封入式防振装置の製造方法を提供することにある。 Therefore, the present invention has an object to solve such problems of the prior art, and the object of the present invention is to prevent the mutual connection of members by caulking and fixing. Liquid-sealed anti-corrosion that allows liquid remaining in the closed space formed in the connecting portion to be reliably and quickly discharged during the manufacture of the vibration device, thereby preventing liquid leakage from the closed space over time. An object of the present invention is to provide a vibration device and a method for manufacturing a liquid-filled vibration isolator.

この発明の液封入式防振装置は、振動発生側もしくは振動伝達側のいずれか一方側に連結されるコア部材と、他方側に連結される筒状部材と、該筒状部材を、一方の端部側で前記コア部材の外周面に液密に連結する弾性部材と、前記筒状部材の他方の端部側に液密に連結した、剛性環状部材および、剛性環状部材に固着させたダイヤフラムからなる蓋部材と、該ダイヤフラムの内側に区画される空間内に非圧縮性の液体を封入してなる流体室と、該流体室を前記コア部材側の主液室と前記ダイヤフラム側の副液室とに仕切る仕切部材とを具え、前記主液室および副液室の相互を制限通路で連通させてなるものであって、前記蓋部材の、仕切部材に隣接して制限通路を区画する剛性環状部材に、フランジ状の平板部および、平板部の周縁に位置する筒状部を形成するとともに、前記筒状部材の、蓋部材への連結部分に設けたフランジ部を、前記剛性環状部材の筒状部を包み込むように折り返して塑性変形させて、蓋部材の平板部および筒状部に固定し、前記フランジ部に、該フランジ部と該筒状部との間に形成される閉空間を外気に連通させる少なくとも一の孔もしくは切欠きを設けてなるものである。 The liquid-filled vibration isolator of the present invention includes a core member connected to either the vibration generation side or the vibration transmission side, a cylindrical member connected to the other side, and the cylindrical member An elastic member that is liquid-tightly connected to the outer peripheral surface of the core member on the end side, a rigid annular member that is liquid-tightly connected to the other end side of the tubular member, and a diaphragm fixed to the rigid annular member A lid member comprising: a fluid chamber in which an incompressible liquid is sealed in a space defined inside the diaphragm; and a main liquid chamber on the core member side and a sub-liquid on the diaphragm side. A partition member that divides the chamber into a chamber, the main liquid chamber and the sub-liquid chamber communicate with each other through a restriction passage, and the lid member has a rigidity that divides the restriction passage adjacent to the partition member In the annular member, located on the flange-shaped flat plate portion and the periphery of the flat plate portion A cylindrical portion is formed, and a flange portion provided at a connection portion of the cylindrical member to the lid member is folded and plastically deformed so as to wrap around the cylindrical portion of the rigid annular member. It is fixed to a flat plate portion and a cylindrical portion, and the flange portion is provided with at least one hole or notch that allows a closed space formed between the flange portion and the cylindrical portion to communicate with the outside air. is there.

ここで好ましくは、筒状部材のフランジ部に、周縁立上がり筒部を設け、該周縁立上がり筒部を、蓋部材の平板部および筒状部にかしめ固定する。 Preferably, a peripheral edge rising cylinder part is provided in the flange part of the cylindrical member, and the peripheral edge rising cylinder part is caulked and fixed to the flat plate part and the cylindrical part of the lid member.

なお好ましくは、前記筒状部材のフランジ部に、一対の孔もしくは切欠きを設ける。 Preferably, a pair of holes or notches are provided in the flange portion of the cylindrical member.

また、この発明の、液封入式防振装置の製造方法は、一方の端部内周面に、コア部材の外周面を弾性部材によって液密に連結した、金属材料からなる筒状部材の他方の端部に、仕切部材と、フランジ状の平板部および、平板部の周縁に位置する筒状部を形成した剛性環状部材並びに該剛性環状部材に固着させたダイヤフラムからなる蓋部材とのそれぞれを液体中で順次組み合わせて、前記仕切部材によって、前記コア部材側の主液室と、前記ダイヤフラム側の副液室とに仕切られ、前記ダイヤフラムの内側に区画される流体室の空間内に液体を充満させた状態で、前記筒状部材の、蓋部材への連結部分に設けたフランジ部を、蓋部材の剛性環状部材に形成した筒状部を包み込むように折り返して塑性変形させて、前記剛性環状部材の、平板部および筒状部に固定し、しかる後、該筒状部と前記フランジ部との間に形成される空間を、該フランジ部に設けた少なくとも一の孔もしくは切欠きを介して加圧もしくは減圧して、該空間内に封入された液体を排出させるものである。 Further, according to the manufacturing method of the liquid filled type vibration damping device of the present invention, the other end of the cylindrical member made of a metal material in which the outer peripheral surface of the core member is liquid-tightly connected to the inner peripheral surface of one end portion by an elastic member. Each of the partition member, the flange-shaped flat plate portion, the rigid annular member formed with the cylindrical portion located at the periphery of the flat plate portion, and the lid member made of a diaphragm fixed to the rigid annular member is liquidated at the end portion. In combination, the partition member divides the main liquid chamber on the core member side and the sub liquid chamber on the diaphragm side by the partition member, and fills the liquid chamber space partitioned inside the diaphragm with liquid. In this state, the flange portion provided at the connecting portion of the cylindrical member to the lid member is folded and plastically deformed so as to wrap the cylindrical portion formed on the rigid annular member of the lid member. The flat part of the member After that, the space formed between the cylindrical portion and the flange portion is pressurized or depressurized through at least one hole or notch provided in the flange portion. Thus, the liquid sealed in the space is discharged.

この発明の液封入式防振装置によれば、筒状部材のフランジ部に、そのフランジ部と、剛性環状部材に形成した筒状部との間に形成される閉空間を外気に連通させる少なくとも一の孔もしくは切欠きを設けたことから、部材の相互を連結させた後に、その孔もしくは切欠きを介して、たとえば加圧空気の導入等で、閉空間内を加圧することによって、閉空間内に残留した液体を効果的に押出し排除することができるので、残留液体の速やかにして確実な排水が実現されることになり、この結果として、製品としての防振装置の使用時の、その閉空間からの液体の漏出を十分に防止することができる。
あるいは、孔もしくは切欠きを介して、たとえば閉空間内を負圧雰囲気として、閉空間内を減圧することによって、この閉空間に残留した液体を、その孔もしくは切欠きから吸い出すことができるため、これによってもまた、装置の使用時の、閉空間からの液体の漏出を防止できる。 According to the liquid filled type vibration damping device of the present invention, at least the closed space formed between the flange portion and the cylindrical portion formed in the rigid annular member is communicated with the outside air at the flange portion of the cylindrical member. Since one hole or notch is provided, after the members are connected to each other, the closed space is pressurized by, for example, introducing pressurized air through the hole or notch. The liquid remaining inside can be effectively pushed out and removed, so that the residual liquid can be quickly and reliably drained. As a result, when using the vibration isolator as a product, Liquid leakage from the closed space can be sufficiently prevented.
Alternatively, the liquid remaining in the closed space can be sucked out from the hole or notch by reducing the pressure in the closed space, for example, by setting the inside of the closed space as a negative pressure atmosphere through the hole or notch. This also prevents leakage of liquid from the closed space when the device is in use.

また、筒状部材のフランジ部がかしめ付けられる、剛性環状部材側ではなく、前記フランジ部側に、孔もしくは切欠きを設けたことにより、かしめ固定による、筒状部材と剛性部材、ひいては、蓋部材との相互連結に何の影響も及ぼすことなく、前記閉空間を外気に、確実に連通させることができるため、従来技術のような、両者の連結強度の安定性の問題、排水通路の閉塞の問題等が生じることがない。 In addition, by providing a hole or a notch on the flange portion side instead of the rigid annular member side where the flange portion of the cylindrical member is caulked, the tubular member and the rigid member, and thus the lid, can be secured by caulking. Since the closed space can be reliably communicated with the outside air without affecting the interconnection with the member, the problem of stability of the connection strength between the two, as in the prior art, the blockage of the drainage passage The problem does not occur.

ここで、筒状部材のフランジ部に、周縁立上がり筒部を設け、その周縁立上がり筒部を、剛性環状部材の平板部および筒状部にかしめ固定した場合は、筒状部材のフランジ部を単に平板状とした場合に比して、そのフランジ部の、塑性変形量を少なくすることができて、折返し作業が容易になるとともに、フランジ部への、クラック等の損傷の発生おそれを有効に取り除くことができる。 Here, when the peripheral edge rising cylinder part is provided in the flange part of the cylindrical member and the peripheral edge rising cylinder part is caulked and fixed to the flat plate part and the cylindrical part of the rigid annular member, the flange part of the cylindrical member is simply Compared with a flat plate shape, the amount of plastic deformation of the flange portion can be reduced, facilitating the folding work, and effectively eliminating the possibility of cracks and other damage to the flange portion. be able to.

この一方で、フランジ部に設けた周縁立上がり筒部の存在の故に、装置の製造段階においては、各構成部材を液体中で組み合わせる際に、フランジ部と、剛性環状部材の筒状部との間に液体が残留し易くなるが、この残留があってなお、フランジ部に形成した孔もしくは切欠きの作用の下で、液体の十分なる排出を確実かつ迅速に行うことができる。 On the other hand, due to the presence of the peripheral rising cylindrical portion provided in the flange portion, when the components are combined in the liquid, the flange portion and the cylindrical portion of the rigid annular member are arranged in the manufacturing stage of the apparatus. However, even if the liquid remains, sufficient discharge of the liquid can be reliably and rapidly performed under the action of the hole or notch formed in the flange portion.

そしてまた、筒状部材のフランジ部に、二個一対の孔もしくは切欠きを設けたときは、剛性環状部材の筒状部とフランジ部との間に形成される閉空間内に残留した液体の排出に当って、たとえば一方の孔もしくは切欠きから加圧空気を導入して、他方の孔もしくは切欠きから液体を排出させることによって、あるいは、一方の孔もしくは切欠きを介して閉空間内を負圧雰囲気として、その一方の孔もしくは切欠きから液体を吸い出すことによって、閉空間内の液体の排水作業がより一層容易なものとなる。 In addition, when two pairs of holes or notches are provided in the flange portion of the cylindrical member, the liquid remaining in the closed space formed between the cylindrical portion and the flange portion of the rigid annular member For discharging, for example, by introducing pressurized air from one hole or notch and discharging liquid from the other hole or notch, or through the one hole or notch in the closed space. By discharging the liquid from one of the holes or notches as a negative pressure atmosphere, the operation of draining the liquid in the closed space becomes even easier.

また、この発明の、液封入式防振装置の製造方法によれば、筒状部材、仕切部材および蓋部材を液体中で組み合わせて、筒状部材を蓋部材にかしめ固定することによって、装置内部の空間内に、空気の混入のおそれなしに、液体を充満させることができる。 Further, according to the method for manufacturing a liquid-filled vibration isolator of the present invention, the tubular member, the partition member, and the lid member are combined in the liquid, and the tubular member is caulked and fixed to the lid member. This space can be filled with liquid without fear of air mixing.

そして、このことによって、剛性環状部材の筒状部と、筒状部材のフランジ部との間に形成される空間への残留を余儀なくされる液体は、その筒状部とフランジ部との間の空間を、フランジ部に設けた少なくとも一の孔もしくは切欠きを介して加圧もしくは減圧することで、確実かつ迅速に、しかも十分に排出されるので、連結部分に形成される空間からの経時的な液体の漏出が生じない防振装置を製造することができる。 And by this, the liquid which is forced to remain in the space formed between the cylindrical portion of the rigid annular member and the flange portion of the cylindrical member is between the cylindrical portion and the flange portion. By pressurizing or depressurizing the space through at least one hole or notch provided in the flange portion, the space can be reliably and quickly discharged sufficiently. Therefore, it is possible to manufacture a vibration isolator that does not cause liquid leakage.

この発明の液封入式防振装置について示す、中心軸線を含む縦断面図である。It is a longitudinal cross-sectional view including the central axis shown about the liquid-filled type vibration isolator of this invention. 図１の防振装置を、連結前の状態について示す分解斜視図である。It is a disassembled perspective view which shows the vibration isolator of FIG. 1 about the state before a connection. 図１の防振装置を、要部について示す部分拡大断面図である。It is a partial expanded sectional view which shows the vibration isolator of FIG. 1 about the principal part. 他の実施形態を、連結前の状態について示す分解斜視図である。It is a disassembled perspective view which shows other embodiment about the state before a connection. 図１の防振装置について示す斜視図である。It is a perspective view shown about the vibration isolator of FIG. 図１の防振装置を、要部について示す部分拡大断面図である。It is a partial expanded sectional view which shows the vibration isolator of FIG. 1 about the principal part. 図１の防振装置について示す平面図である。It is a top view shown about the vibration isolator of FIG. 他の実施形態について示す斜視図である。It is a perspective view shown about other embodiment. 他の実施形態について示す斜視図である。It is a perspective view shown about other embodiment. 従来の防振装置を示す縦断面図である。It is a longitudinal cross-sectional view which shows the conventional vibration isolator. 図１０の防振装置を、要部について示す部分拡大断面図である。It is a partial expanded sectional view which shows the vibration isolator of FIG. 10 about a principal part. 先行技術の防振装置を、要部について示す部分拡大断面図および部分拡大平面図である。It is the partial expanded sectional view and partial expanded plan view which show the vibration isolator of a prior art about the principal part.

以下に図面を参照しながら、この発明の液封入式防振装置の実施の形態について説明する。
図１に示す、液封入式防振装置の中心軸線を含む縦断面図において、液封入式防振装置１は、金属材料からなる筒状部材２と、仕切部材３と、ダイヤフラム４および剛性環状部材５により構成される蓋部材６と、内部に充填封入した、非圧縮性の所要の液体とを具えてなる。 Embodiments of a liquid-filled vibration isolator according to the present invention will be described below with reference to the drawings.
In the longitudinal sectional view including the central axis of the liquid-filled vibration isolator shown in FIG. 1, the liquid-filled vibration isolator 1 includes a cylindrical member 2, a partition member 3, a diaphragm 4, and a rigid ring made of a metal material. It comprises a lid member 6 constituted by the member 5 and a required incompressible liquid filled and sealed inside.

ここで、筒状部材２の、一方の端部分の内周面を、図に示すところでは中空棒状のコア部材７の外周面に、弾性部材８で液密に連結するとともに、筒状部材２の、他方の端部を、蓋部材６によって液密に封止することにより、内部に密閉空間を形成し、この密閉空間を、非圧縮性の液体の充填封入によって流体室９とする。 Here, the inner peripheral surface of one end portion of the cylindrical member 2 is liquid-tightly connected to the outer peripheral surface of the hollow rod-shaped core member 7 by an elastic member 8 as shown in the figure, and the cylindrical member 2 The other end portion is liquid-tightly sealed by the lid member 6 to form a sealed space inside, and this sealed space is used as a fluid chamber 9 by filling and filling with an incompressible liquid.

またここでは、筒状部材２と蓋部材６との間に、仕切部材３を介装させて配置し、この仕切部材３で、流体室９を、コア部材７側に位置する主液室１０と、ダイヤフラム４側に位置する副液室１１とに区画する。ところでこの仕切部材３は、図に示すところでは、円盤状のメンブラン１２および、メンブラン１２の周縁を固着させた筒部分を内周側周縁に形成してなる環状の通路構成部材１３により構成してなる。 Further, here, a partition member 3 is disposed between the tubular member 2 and the lid member 6, and the fluid chamber 9 is located on the core member 7 side by the partition member 3. And a secondary liquid chamber 11 located on the diaphragm 4 side. By the way, as shown in the figure, the partition member 3 is constituted by a disc-shaped membrane 12 and an annular passage constituting member 13 formed on the inner peripheral side periphery of a cylindrical portion to which the periphery of the membrane 12 is fixed. Become.

ここにおいて、環状の通路構成部材１３は、内周側周縁の筒部分を除き、縦断面形状が略倒立「Ｕ」字状をなす剛性環状部材５の開口側を塞いで剛性環状部材５と係合して、主液室１０と副液室１１との連通をもたらす制限通路１４を区画する。
この制限通路１４には、封入液体の、主液室１０と副液室１１との間の流動を許容すべく、図では剛性環状部材５の内周側側壁の一部を刳り貫いて、制限通路１４と副液室１１とを連通させる窓部１５を設けるとともに、通路構成部材１３側に、制限通路１４と主液室１０とを連通させる図示しない窓部を設ける。 Here, the annular passage constituting member 13 is engaged with the rigid annular member 5 by closing the opening side of the rigid annular member 5 whose vertical cross-sectional shape is a substantially inverted “U” shape, except for the cylindrical portion on the inner peripheral side periphery. In combination, a restriction passage 14 that provides communication between the main liquid chamber 10 and the sub liquid chamber 11 is defined.
In order to allow the flow of the sealed liquid between the main liquid chamber 10 and the sub liquid chamber 11 in the restriction passage 14, the restriction passage 14 is restricted by passing through a part of the inner peripheral side wall of the rigid annular member 5 in the drawing. A window portion 15 for communicating the passage 14 and the auxiliary liquid chamber 11 is provided, and a window portion (not shown) for communicating the restriction passage 14 and the main liquid chamber 10 is provided on the passage constituting member 13 side.

なおここで、図示のこの防振装置１では、筒状部材２の、剛性環状部材５側の端部分に、それの外周側に広がる環状のフランジ部１６を設ける一方で、略倒立「Ｕ」字状の縦断面形状を有する剛性環状部材５の外周側側壁の周縁に、環状の平板部１７を形成するとともに、その平板部１７の周縁に、筒状部材２側に向けて垂れ下がる筒状部１８を形成したところにおいて、筒状部材２のフランジ部１６を、剛性環状部材５の平板部１７および筒状部１８を包み込むように折り返して、これらの部材の相互を連結してなるものである。
そしてこのような連結の結果として、筒状部材２が、蓋部材６に強固に連結されることになる。 Here, in the vibration isolator 1 shown in the figure, an annular flange portion 16 extending on the outer peripheral side of the tubular member 2 on the rigid annular member 5 side is provided on the end portion on the rigid annular member 5 side. An annular flat plate portion 17 is formed on the peripheral edge of the outer peripheral side wall of the rigid annular member 5 having a letter-like longitudinal cross-sectional shape, and a cylindrical portion that hangs down toward the cylindrical member 2 side on the peripheral edge of the flat plate portion 17 18 is formed, the flange portion 16 of the cylindrical member 2 is folded back so as to wrap around the flat plate portion 17 and the cylindrical portion 18 of the rigid annular member 5, and these members are connected to each other. .
As a result of such connection, the cylindrical member 2 is firmly connected to the lid member 6.

かかる構成を有する防振装置１は、コア部材７を、図示しない振動発生側もしくは振動伝達側のいずれか一方側、たとえば車体に積載されるエンジン側に、また、筒状部材２を他方側、たとえば車体側に、それぞれ取り付けることで、制限通路１４内の液体の液柱共振、液体が制限通路１４から受ける流動抵抗等の作用によって、エンジンで発生した振動を有効に減衰し、また、その振動の車体への伝達を効果的に防止することができる。 In the vibration isolator 1 having such a configuration, the core member 7 is placed on either the vibration generation side or the vibration transmission side (not shown), for example, the engine side loaded on the vehicle body, and the cylindrical member 2 is placed on the other side. For example, by attaching each to the vehicle body side, vibration generated in the engine is effectively damped by the action of liquid column resonance of the liquid in the restriction passage 14, flow resistance received by the liquid from the restriction passage 14, and the like. Can be effectively prevented from being transmitted to the vehicle body.

ここで、エンジンから、所定の周波数を上回る高周波数の振動が、装置１に入力されて、封入液体の粘性等に起因する、制限通路１４のいわゆる目詰まり状態が生じた場合には、主液室１０と副液室１１との間の液体の流動による上記の振動減衰機能が発揮し得なくなるも、主液室１０と副液室１１との間に位置するメンブラン１２が、それらの両液室内圧の増減に応じて振動することによって、装置１の動的ばね定数の増加を抑制することができる。 Here, when vibration of a high frequency exceeding a predetermined frequency is input from the engine to the device 1 and a so-called clogged state of the restriction passage 14 caused by the viscosity of the sealed liquid occurs, the main liquid Although the above vibration damping function due to the flow of liquid between the chamber 10 and the sub liquid chamber 11 cannot be exhibited, the membrane 12 positioned between the main liquid chamber 10 and the sub liquid chamber 11 has both of these liquids. By oscillating according to increase / decrease of the indoor pressure, an increase in the dynamic spring constant of the device 1 can be suppressed.

ところで、このような防振装置１を製造するにあたっては、ダイヤフラム４の内側に区画される空間内に、空気を混入させることなく、液体を完全に充満させるため、図２に、筒状部材２と蓋部材６との連結前の状態を分解斜視図で例示するように、筒状部材２の、蓋部材６側の端部に、仕切部材３および蓋部材６のそれぞれを、液体中で順次組み合わせた後に、それらを液体の外部へ取り出した状態で、図３に、筒状部材２と剛性環状部材５との連結部分を拡大縦断面図で示すように、筒状部材２のフランジ部１６を、図の仮想線位置から実線位置へ、矢印で示す如く、剛性環状部材５の筒状部１８を包み込むように折り返して、フランジ部１６を塑性変形させ、フランジ部１６のこの塑性変形をもって、平板部１７および筒状部１８に、フランジ部１６を固定する。 By the way, in manufacturing such an anti-vibration device 1, in order to completely fill the liquid into the space defined inside the diaphragm 4 without mixing air, the cylindrical member 2 is shown in FIG. As illustrated in an exploded perspective view of the state before connection between the lid member 6 and the lid member 6, the partition member 3 and the lid member 6 are sequentially placed in the liquid at the end of the cylindrical member 2 on the lid member 6 side. After the combination, in a state where they are taken out of the liquid, the flange portion 16 of the cylindrical member 2 is shown in FIG. 3 as an enlarged longitudinal sectional view of the connecting portion between the cylindrical member 2 and the rigid annular member 5. From the imaginary line position of the figure to the solid line position, as shown by the arrow, is folded back so as to wrap the cylindrical portion 18 of the rigid annular member 5, and the flange portion 16 is plastically deformed, and with this plastic deformation of the flange portion 16, On the flat plate portion 17 and the cylindrical portion 18, To fix the flange portion 16.

なおここで、図３に示すように、縦断面内で測った、フランジ部１６の折返し角度αが鋭角となるように、フランジ部１６を、平板部１７および筒状部１８側に折り返して、これらにかしめ固定することにより、筒状部材２と、蓋部材６の剛性環状部材５とをより一層強固に連結することができる。 Here, as shown in FIG. 3, the flange portion 16 is folded back toward the flat plate portion 17 and the cylindrical portion 18 so that the turning angle α of the flange portion 16 measured in the longitudinal section becomes an acute angle. By caulking and fixing to these, the tubular member 2 and the rigid annular member 5 of the lid member 6 can be more firmly connected.

ここにおいて、筒状部材２、仕切部材３および蓋部材６を液体中で組み合わせるに先立って、図４に示すように、筒状部材２のフランジ部１６に、それの周縁からほぼ直角に立ち上げてなる周縁立ち上がり筒部１６Ａを予め設けた場合には、それらの部材を液体中で組み合わせる際の、仕切部材３および蓋部材６の、筒状部材２に対する位置決め配置が容易となるとともに、事後的なかしめ固定による、筒状部材２のフランジ部１６への損傷の発生のおそれを有利に取り除くことができる。 Here, prior to combining the cylindrical member 2, the partition member 3 and the lid member 6 in the liquid, as shown in FIG. 4, the flange portion 16 of the cylindrical member 2 is raised substantially perpendicularly from the periphery thereof. When the peripheral rising cylindrical portion 16A is provided in advance, the positioning and disposition of the partition member 3 and the lid member 6 with respect to the cylindrical member 2 when the members are combined in the liquid becomes easy and the posterior The fear of occurrence of damage to the flange portion 16 of the tubular member 2 due to the caulking is advantageously eliminated.

以上の工程を経て製造された防振装置１では、図３に示すように、筒状部１８の内周側で、いずれも剛性材料からなる平板部１７とフランジ部１６との間に、図ではダイヤフラム４と一体に成形した、弾性材料からなるシール部１９が、上述のかしめ固定によってそれらの剛性部材間で押し潰されて配設されており、これにより、そのシール部１９のシール機能の下で、流体室９内に充満させた液体の、筒状部１８の周縁とフランジ部１６との接触部分からの外部への漏れ出しを十分に防止している。
なおここでは、シール部１９を、蓋部材６のダイヤフラム４と一体に形成しているが、シール部１９は、筒状部材２側のフランジ部１６に固着させて設けることができる他、筒状部材２や蓋部材６とは別個のものとして、筒状部１８の内周側であって、平板部１７とフランジ部１６との間に介装させることもできる。 In the vibration isolator 1 manufactured through the above steps, as shown in FIG. 3, on the inner peripheral side of the cylindrical portion 18, the plate portion 17 and the flange portion 16 each made of a rigid material are Then, the seal portion 19 made of an elastic material, which is formed integrally with the diaphragm 4, is disposed by being crushed between the rigid members by the above-described caulking and fixing. Below, leakage of the liquid filled in the fluid chamber 9 from the contact portion between the peripheral edge of the cylindrical portion 18 and the flange portion 16 is sufficiently prevented.
Here, the seal portion 19 is formed integrally with the diaphragm 4 of the lid member 6, but the seal portion 19 can be provided by being fixed to the flange portion 16 on the tubular member 2 side, or in a tubular shape. As a separate member from the member 2 and the lid member 6, it can be interposed between the flat plate portion 17 and the flange portion 16 on the inner peripheral side of the cylindrical portion 18.

ところで、上述したように、筒状部材２のフランジ部１６を、剛性環状部材５の平板部１７および筒状部１８にかしめ固定すると、フランジ部１６の折返し具合等が原因となって、図３に示すように、フランジ部１６と筒状部１８との間に閉空間２０が形成されることになるが、これらの構成部材を、液体中で組み合わせた後にかしめ固定することから、フランジ部１６の折返し部分に液体が残留した状態で、フランジ部１６が、筒状部１８を包み込むように折り返されることがあり、なかでもフランジ部１６に図４に示すような周縁立ち上がり部１６Ａを予め形成した場合は、フランジ部１６と筒状部１８との間に隙間に液体がとくに残留し易くなって、閉空間２０内に封入されることがある。 By the way, as described above, when the flange portion 16 of the tubular member 2 is caulked and fixed to the flat plate portion 17 and the tubular portion 18 of the rigid annular member 5, due to the folded state of the flange portion 16 and the like, FIG. As shown in FIG. 2, a closed space 20 is formed between the flange portion 16 and the cylindrical portion 18, and these components are caulked and fixed after being combined in the liquid. With the liquid remaining in the folded portion, the flange portion 16 may be folded back so as to wrap the cylindrical portion 18, and in particular, the peripheral edge rising portion 16 A as shown in FIG. In some cases, the liquid is particularly likely to remain in the gap between the flange portion 16 and the cylindrical portion 18 and may be enclosed in the closed space 20.

そして閉空間２０内に封じ込められた残留液体は、防振装置１が製品として使用されるうちに、いずれも剛性材料からなるフランジ部１６と平板部１７との接触部分から、装置１の外部へ徐々に漏れ出すことがあり、このことが、流体室９内に封入した液体の漏出であるとの誤認を生じさせ、シール部材１９によるシール機能に問題があるという誤解を招く要因となる場合があった。 The residual liquid contained in the closed space 20 is transferred from the contact portion between the flange portion 16 and the flat plate portion 17 made of a rigid material to the outside of the device 1 while the vibration isolator 1 is used as a product. The liquid may be gradually leaked, and this may cause a misconception that the liquid sealed in the fluid chamber 9 leaks, and may cause a misunderstanding that there is a problem in the sealing function of the seal member 19. there were.

そこで、閉空間２０からの経時的な液体の漏出を防止すべく、この発明の液封入式防振装置１では、図５に斜視図で示すように、筒状部材２のフランジ部１６に、閉空間２０に残留した液体を外気に連通させる少なくとも一の、図では二個一対の孔２１（他方の孔は図示しない）を形成する。この孔２１は、図６に連結部分を拡大断面図で示すように、フランジ部１６の、筒状部１８との上方接触部から、それの下方接触部までの範囲内に、フランジ部１６を貫通させて設ける。 Therefore, in order to prevent the liquid leakage from the closed space 20 with time, in the liquid-filled vibration isolator 1 of the present invention, as shown in a perspective view in FIG. In the figure, at least one pair of holes 21 (the other hole is not shown) is formed to allow the liquid remaining in the closed space 20 to communicate with the outside air. As shown in FIG. 6 in an enlarged cross-sectional view, the hole 21 has the flange portion 16 within the range from the upper contact portion of the flange portion 16 with the cylindrical portion 18 to the lower contact portion thereof. Provide through.

フランジ部１６を貫通する孔２１を形成することによって、部材の相互連結の後に、この孔２１を介して閉空間２０内を加圧もしくは減圧することができ、それによって、閉空間２０内に残留した液体を確実かつ迅速に排出できるので、上述したような、装置使用時の、閉空間２０からの液体の、意図しない経時的な漏出を防止することができる。 By forming the hole 21 penetrating the flange portion 16, the interior of the closed space 20 can be pressurized or depressurized through the hole 21 after the members are interconnected, thereby remaining in the closed space 20. Since the liquid thus discharged can be surely and rapidly discharged, it is possible to prevent the liquid from being unintentionally leaked from the closed space 20 when the apparatus is used as described above.

つまり、図７に示すように、フランジ部１６に二個一対の孔２１を設けた場合には、一方の孔２１ａから、たとえば加圧空気を吹き込むことで、他方の孔２１ｂから、閉空間２０内に残留した液体を押し出して排出させることができ、あるいは、一方の孔２１ａを介して閉空間２０内を負圧雰囲気にして、その孔２１ａから液体を吸い出して排出させることができるので、液体の排出作業を容易なものとしてなお、液体の、閉空間２０からの排出が十分になされ、その結果として、閉空間２０からの経時的な液体の漏出が防止されることになる。 That is, as shown in FIG. 7, when two pairs of holes 21 are provided in the flange portion 16, for example, pressurized air is blown from one hole 21 a, so that the closed space 20 is opened from the other hole 21 b. The liquid remaining inside can be pushed out and discharged, or the inside of the closed space 20 can be made into a negative pressure atmosphere through one hole 21a, and the liquid can be sucked out and discharged from the hole 21a. However, the liquid is sufficiently discharged from the closed space 20 as a result, and as a result, leakage of the liquid from the closed space 20 with time is prevented.

ここにおいて、図７に平面図で示すように、一対の孔２１ａ、ｂは、筒状部材２のフランジ部１６で、直径方向に互いに対抗する向きに形成することが好ましい。このように一対の孔２１ａ、ｂを形成することで、環状の閉空間２０内の、孔２１ａから孔２１ｂまでの範囲にわたって残留した液体を、効率良く、かつ十分に排出させることができる。 Here, as shown in a plan view in FIG. 7, the pair of holes 21 a and b are preferably formed in the flange portion 16 of the tubular member 2 in a direction opposite to each other in the diametrical direction. By forming the pair of holes 21a and 21b in this way, the liquid remaining in the annular closed space 20 over the range from the hole 21a to the hole 21b can be efficiently and sufficiently discharged.

またここで、孔２１の個数は二個に限定されるものではなく、一または三以上の孔２１をフランジ部１６に設けることもできる。
なお、一の孔２１をフランジ部１６に形成したときは、閉空間２０内の残留液体を排出させる気体の流入出口の双方を確保するために、図８に示すように、幾分大きな孔２１とすることが好ましい。すなわち、一の大きめの孔２１を設けることで、その孔２１内の、フランジ部１６と筒状部１８とで囲まれる隙間２２ａもしくは２２ｂのいずれか一方から、たとえば、加圧空気を導入して、他方から残留液体を排出させることができる。 Here, the number of the holes 21 is not limited to two, and one or three or more holes 21 may be provided in the flange portion 16.
In addition, when the one hole 21 is formed in the flange part 16, in order to ensure both the gas inflow / outlet for discharging the residual liquid in the closed space 20, as shown in FIG. It is preferable that That is, by providing one larger hole 21, for example, pressurized air is introduced from one of the gaps 22a or 22b surrounded by the flange portion 16 and the cylindrical portion 18 in the hole 21. The residual liquid can be discharged from the other side.

そしてまた、閉空間２０に残留した液体を排出させるためには、フランジ部１６に形成する孔２１に替えて、図９に示すような切欠き２３とすることもできるが、かしめ固定による、部材の相互連結に何の影響も及ぼさない点で、孔２１のほうが好ましい。
以上の防振装置１において、孔２１もしくは切欠き２３は、筒状部材２と蓋部材６との連結前に、筒状部材２のフランジ部１６に予め形成しておくことが好ましい。 Further, in order to discharge the liquid remaining in the closed space 20, a notch 23 as shown in FIG. 9 can be used instead of the hole 21 formed in the flange portion 16, but the member by caulking is fixed. The hole 21 is preferred in that it does not have any influence on the interconnection.
In the vibration isolator 1 described above, the hole 21 or the notch 23 is preferably formed in advance in the flange portion 16 of the tubular member 2 before the connection between the tubular member 2 and the lid member 6.

１液封入式防振装置
２筒状部材
３仕切部材
４ダイヤフラム
５剛性環状部材
６蓋部材
７コア部材
８弾性部材
９流体室
１０主液室
１１副液室
１２メンブラン
１３通路構成部材
１４制限通路
１５窓部
１６フランジ部
１７平板部
１８筒状部
１９シール部材
２０閉空間
２１孔
２２ａ、２２ｂ隙間
２３切欠き
α フランジ部の折返し角度 DESCRIPTION OF SYMBOLS 1 Liquid enclosure type vibration isolator 2 Cylindrical member 3 Partition member 4 Diaphragm 5 Rigid annular member 6 Lid member 7 Core member 8 Elastic member 9 Fluid chamber 10 Main liquid chamber 11 Sub liquid chamber 12 Membrane 13 Passage component 14 Restriction passage 15 Window portion 16 Flange portion 17 Flat plate portion 18 Tubular portion 19 Seal member 20 Closed space 21 Hole 22a, 22b Clearance 23 Notch α Folding angle of flange portion

Claims

振動発生側もしくは振動伝達側のいずれか一方側に連結されるコア部材と、他方側に連結した、金属材料からなる筒状部材と、該筒状部材を、一方の端部側で前記コア部材の外周面に液密に連結する弾性部材と、前記筒状部材の他方の端部側に液密に連結した、剛性環状部材および、剛性環状部材に固着させたダイヤフラムからなる蓋部材と、該ダイヤフラムの内側に区画される空間内に非圧縮性の液体を封入してなる流体室と、該流体室を前記コア部材側の主液室と前記ダイヤフラム側の副液室とに仕切る仕切部材とを具え、前記主液室および副液室の相互を制限通路で連通させてなる液封入式防振装置において、
前記蓋部材の、仕切部材に隣接して制限通路を区画する剛性環状部材に、フランジ状の平板部および、平板部の周縁に位置する筒状部を形成するとともに、
前記筒状部材の、蓋部材への連結部分に設けたフランジ部を、前記剛性環状部材の筒状部を包み込むように折り返して塑性変形させて、蓋部材の平板部および筒状部に固定し、前記フランジ部に、該フランジ部と該筒状部との間に形成される閉空間を外気に連通させる少なくとも一の孔もしくは切欠きを設けてなる液封入式防振装置。 A core member connected to either the vibration generation side or the vibration transmission side, a cylindrical member made of a metal material connected to the other side, and the core member on one end side of the core member An elastic member that is liquid-tightly connected to the outer peripheral surface of the cylindrical member, a rigid annular member that is liquid-tightly connected to the other end of the cylindrical member, and a lid member that is made of a diaphragm fixed to the rigid annular member, A fluid chamber in which an incompressible liquid is sealed in a space partitioned inside the diaphragm, and a partition member that partitions the fluid chamber into a main liquid chamber on the core member side and a sub liquid chamber on the diaphragm side In a liquid-filled type vibration damping device in which the main liquid chamber and the sub liquid chamber communicate with each other through a restriction passage,
While forming a flange-shaped flat plate portion and a cylindrical portion located at the periphery of the flat plate portion on the rigid annular member that partitions the restriction passage adjacent to the partition member of the lid member,
The flange portion provided at the connecting portion of the cylindrical member to the lid member is folded and plastically deformed so as to wrap around the cylindrical portion of the rigid annular member, and is fixed to the flat plate portion and the cylindrical portion of the lid member. A liquid-filled vibration isolator comprising the flange portion provided with at least one hole or notch that allows a closed space formed between the flange portion and the cylindrical portion to communicate with outside air.

筒状部材のフランジ部に、周縁立上がり筒部を設け、該周縁立上がり筒部を、蓋部材の平板部および筒状部に固定してなる請求項１に記載の液封入式防振装置。 The liquid-filled vibration isolator according to claim 1, wherein a peripheral rising cylindrical portion is provided on the flange portion of the cylindrical member, and the peripheral rising cylindrical portion is fixed to the flat plate portion and the cylindrical portion of the lid member.

前記筒状部材のフランジ部に、一対の孔もしくは切欠きを設けてなる請求項１に記載の液封入式防振装置。 The liquid-filled vibration isolator according to claim 1, wherein a pair of holes or notches are provided in the flange portion of the cylindrical member.

一方の端部内周面に、コア部材の外周面を弾性部材によって液密に連結した、金属材料からなる筒状部材の他方の端部に、仕切部材と、フランジ状の平板部および、平板部の周縁に位置する筒状部を形成した剛性環状部材並びに該剛性環状部材に固着させたダイヤフラムからなる蓋部材とのそれぞれを液体中で順次組み合わせて、
前記仕切部材によって、前記コア部材側の主液室と、前記ダイヤフラム側の副液室とに仕切られ、前記ダイヤフラムの内側に区画される流体室の空間内に液体を充満させた状態で、前記筒状部材の、蓋部材への連結部分に設けたフランジ部を、蓋部材の剛性環状部材に形成した筒状部を包み込むように折り返して塑性変形させて、前記剛性環状部材の、平板部および筒状部に固定し、しかる後、該筒状部と前記フランジ部との間に形成される空間を、該フランジ部に設けた少なくとも一の孔もしくは切欠きを介して加圧もしくは減圧して、該空間内に封入された液体を排出させる液封入式防振装置の製造方法。 A partition member, a flange-shaped flat plate portion, and a flat plate portion are connected to the other end portion of the cylindrical member made of a metal material, in which the outer peripheral surface of the core member is liquid-tightly connected to the inner peripheral surface of one end portion by an elastic member. Each of a rigid annular member formed with a cylindrical portion located on the periphery of the lid and a lid member made of a diaphragm fixed to the rigid annular member in a liquid,
In the state where the partition member is partitioned into a main liquid chamber on the core member side and a sub liquid chamber on the diaphragm side , and a liquid is filled in a space of a fluid chamber partitioned inside the diaphragm , The flange portion provided at the connecting portion of the cylindrical member to the lid member is folded and plastically deformed so as to wrap the cylindrical portion formed in the rigid annular member of the lid member, and the flat plate portion of the rigid annular member and After fixing to the cylindrical portion, the space formed between the cylindrical portion and the flange portion is pressurized or depressurized through at least one hole or notch provided in the flange portion. A method of manufacturing a liquid-filled vibration isolator that discharges the liquid sealed in the space.