JP2005155881A - Active liquid sealed vibration absorbing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an active liquid sealed vibration absorbing device having simplified construction by reducing the size of an actuator while increasing the output thereof. <P>SOLUTION: The vibration absorbing device comprises a first mounting tool 1 and a second mounting tool 3 connected to each other via a vibration absorbing base 3, a rubber wall 5 provided on the second mounting tool 2 to form a first liquid chamber 4, a diaphragm 7 forming a second liquid chamber 6 as part of a chamber wall, the first liquid chamber 4 and the second liquid chamber 6 being communicated with each other via an orifice 8, and the iron core movable type actuator 9 constructed as part of a needle 30 which can reciprocate a shaft member 27 connected to the rubber wall 5 in the axial direction in relation to a stator 28. A coil 33 of the stator 28 is excited for driving the shaft member 27 in both outward and homeward strokes to vibrate the rubber wall 5, whereby pressure in the first liquid chamber 4 is controlled. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、内部液室の圧力を制御することで防振効果を高める形式の能動型液封入式防振装置に関するものである。   The present invention relates to an active liquid-filled vibration isolator of the type that enhances the vibration isolating effect by controlling the pressure of an internal liquid chamber.

能動型液封入式防振装置は、一般に、第１取付具と、筒状の第２取付具と、これらを連結するゴム状弾性材から成る防振基体と、第２取付具に取付けられて防振基体との間に液体封入室を形成する第１ダイヤフラムと、液体封入室を防振基体側の第１液室と前記第１ダイヤフラム側の第２液室に仕切る仕切り体と、第１液室と第２液室を連通させるオリフィスと、第１液室の室壁の一部を形成するゴム壁と、該ゴム壁を加振駆動して第１液室の圧力を制御する電磁石式のアクチュエータとを設けて構成されている。   An active liquid-filled vibration isolator is generally attached to a first fixture, a cylindrical second fixture, a vibration isolating base made of a rubber-like elastic material that connects them, and a second fixture. A first diaphragm that forms a liquid sealing chamber between the vibration isolating substrate, a partition that partitions the liquid sealing chamber into a first liquid chamber on the vibration isolating substrate side and a second liquid chamber on the first diaphragm side; An orifice for communicating the liquid chamber and the second liquid chamber, a rubber wall forming a part of the chamber wall of the first liquid chamber, and an electromagnet type that controls the pressure of the first liquid chamber by exciting the rubber wall The actuator is provided.

そして、例えば自動車にエンジンマウントとして組付けられ、第１液室の圧力をアクチュエータを介して制御することで、マウントの低動ばね化を図る等して優れた振動抑制効果を得ている。   For example, it is assembled as an engine mount in an automobile, and by controlling the pressure of the first liquid chamber via an actuator, an excellent vibration suppressing effect is obtained, for example, by reducing the dynamic spring of the mount.

従来、上記の能動型液封入式防振装置では、下記の特許文献１や特許文献２に開示されているように、仕切り体の外周部と第２取付具の内周面との間にオリフィスを形成し、仕切り体の中央に形成した凹部に加振手段となるアクチュエータの可動子の軸部材を挿入して、前記凹部の内周部と該軸部材の先端部とにわたって前記ゴム壁を加硫成形し、第２取付具の内周部と該軸部材の一部とにわたってダイヤフラムを加硫成形し、アクチュエータの軸部材を介して前記ゴム壁を加振駆動可能に設けている。
特開２００１−３０４３２９号公報 特開２００２−１９５３４２号公報 Conventionally, in the above active liquid-filled vibration isolator, as disclosed in the following Patent Document 1 and Patent Document 2, an orifice is provided between the outer peripheral portion of the partition and the inner peripheral surface of the second fixture. And insert the shaft member of the actuator mover serving as the vibration means into the recess formed in the center of the partition, and apply the rubber wall between the inner periphery of the recess and the tip of the shaft member. The diaphragm is vulcanized and molded over the inner peripheral portion of the second fixture and a part of the shaft member, and the rubber wall is provided so as to be driven by vibration through the shaft member of the actuator.
JP 2001-304329 A JP 2002-195342 A

電磁石式のアクチュエータの駆動方式として、前記特許文献１のように、上下に間隔をおいて同軸上に二つのコイルを配し、その空芯部にマグネットを取設した軸部材を挿通配置し、コイルへの通電によってコイルと磁石との間に生じる電磁力により、マグネット付の軸部材を軸方向に往復動させる所謂ムービングマグネット型の場合は、大きい力を得るためには外径が大きくなり、小型化、軽量化には不向きであり、またマグネットが大型化すると、安価でなくなり、衝撃にも弱くなると言った問題がある。   As a driving method of an electromagnet actuator, as in Patent Document 1, two coils are arranged on the same axis with a space in the vertical direction, and a shaft member provided with a magnet in its air core is inserted and arranged. In the case of a so-called moving magnet type in which a shaft member with a magnet is reciprocated in the axial direction by electromagnetic force generated between the coil and the magnet by energizing the coil, the outer diameter becomes large in order to obtain a large force, There is a problem that it is not suitable for reduction in size and weight, and that if the magnet is increased in size, it becomes less expensive and weaker to impact.

また、前記特許文献２のように、ヨーク部材やコイルをインナー部に配し、これを囲むアウター部を軸方向に往復動する加振部材とし、該アウター部を前記ゴム壁に連結して加振するように構成した場合、前記アウター部を保持金具の壁面から離して軸心部のみで支持することになり、支持状体が不安定になる上、やはり大きい出力を得るためには外径を大きくする必要がある。   Further, as in Patent Document 2, a yoke member and a coil are arranged in the inner part, and the outer part surrounding the yoke part is used as a vibration member that reciprocates in the axial direction, and the outer part is connected to the rubber wall and applied. When configured to vibrate, the outer part is separated from the wall surface of the holding bracket and is supported only by the shaft center part, and the support-like body becomes unstable. Need to be larger.

さらに、上記従来の構造は、仕切り体の中央に形成した凹部にアクチュエータの軸部材を挿入し、前記凹部の内周部と軸部材の先端部とにわたって前記ゴム壁を加硫成形し、第２取付具の内周部と軸部材の一部とにわたってダイヤフラムを加硫成形しているため、ゴム壁や軸部材の周りの部品点数が多くなって構造が複雑化するという問題もあった。   Further, in the above conventional structure, the shaft member of the actuator is inserted into the recess formed in the center of the partition body, and the rubber wall is vulcanized and formed between the inner peripheral portion of the recess and the tip portion of the shaft member. Since the diaphragm is vulcanized and formed over the inner peripheral part of the fixture and a part of the shaft member, there is a problem that the number of parts around the rubber wall and the shaft member is increased and the structure is complicated.

本発明の目的は、出力を大きくして、かつ小型化にも寄与できる能動型液封入式防振装置、さらには構造の簡素化を図ることができる能動型液封入式防振装置を提供するところにある。   An object of the present invention is to provide an active liquid-filled vibration isolator capable of increasing the output and contributing to miniaturization, and further an active liquid-filled vibration isolator capable of simplifying the structure. By the way.

本発明は、第１取付具と筒状の第２取付具をゴム状弾性材から成る防振基体を介して連結し、前記第２取付具に前記防振基体と対向してゴム壁を設け、前記防振基体と前記ゴム壁との間を第１液室とし、この第１液室とは別にダイヤフラムが室壁の一部をなす第２液室を設け、前記第１液室と前記第２液室とをオリフィスにより連通させ、前記第１液室の室壁の一部をなす前記ゴム壁に連結した加振手段により該ゴム壁を加振変位させることにより前記第１液室の圧力を制御するようにした能動型液封入式防振装置であって、前記加振手段として、前記ゴム壁に連結した軸部材をその外側方に配した固定子に関して軸方向に往復動可能な可動子の少なくとも一部として構成した鉄心可動形のアクチュエータを設け、前記固定子に備えるコイルを励磁することにより、前記軸部材を往動行程及び復動行程の両方向に駆動して前記ゴム壁を加振するように構成してなることを特徴とする。   In the present invention, the first fixture and the cylindrical second fixture are connected via a vibration-proof base made of a rubber-like elastic material, and a rubber wall is provided on the second fixture so as to face the vibration-proof base. In addition, a first liquid chamber is provided between the vibration isolating base and the rubber wall, and a second liquid chamber in which a diaphragm forms a part of the chamber wall is provided separately from the first liquid chamber, and the first liquid chamber and the The second liquid chamber is connected by an orifice, and the rubber wall is vibrated and displaced by vibration means connected to the rubber wall forming a part of the chamber wall of the first liquid chamber. An active liquid-filled vibration isolator configured to control pressure, and capable of reciprocating in an axial direction with respect to a stator in which a shaft member connected to the rubber wall is disposed outward as the vibration means A coil provided in the stator, provided with an iron core movable actuator configured as at least a part of the mover By energizing, and characterized by being constituted of the rubber wall is driven in both directions of the shaft member forward stroke and backward stroke to vibrate.

これにより、加振手段としてのアクチュエータの軸部材の往復動により発生する力の立ち上がりの遅れをなくすることができ、第１液室の圧力制御をスムーズにかつ迅速に行えるばかりか、部品点数の増加を抑制することもできる。また、鉄心可動形のために、外径を大きくすることなく、大きな出力を得ることができる。   As a result, the delay in the rise of the force generated by the reciprocation of the shaft member of the actuator as the vibration means can be eliminated, and the pressure control of the first liquid chamber can be performed smoothly and quickly. The increase can also be suppressed. Moreover, since the iron core is movable, a large output can be obtained without increasing the outer diameter.

例えば、アクチュエータをソレノイド式に構成し、ゴム壁に連結したアクチュエータの軸部材を往動行程で電気的に駆動させ、復動行程はコイルスプリングの弾性力によって機械的に復帰させる構造では、往動行程の初期にコイルスプリングの弾性力に抗しなければならないことから、図８に示すように、アクチュエータの駆動によって本防振装置に発生する力Ｆ［Ｎ］の立ち上がりがｔ１［ｓ（秒）］遅れるとともに、この遅れｔ１の値が各往動行程ごとにばらつきやすい。そして、復動行程では力Ｆが急激に低下してＦ−ｔ曲線（Ｆと時間ｔの関係を表す曲線）が滑らかにならず、振動の吸収を正確に行うことができないという問題がある。この問題を解消するために、第１液室内に、ゴム壁との間に第３の液室を形成するフィルター部材を設けて、Ｆ−ｔ曲線を正弦波曲線に補正する手段を採用することも考えられるが、これではフィルター部材の分だけ部品点数が増加してしまう。   For example, in a structure in which the actuator is configured as a solenoid type, the shaft member of the actuator connected to the rubber wall is electrically driven in the forward stroke, and the backward stroke is mechanically restored by the elastic force of the coil spring. Since it is necessary to resist the elastic force of the coil spring at the beginning of the stroke, as shown in FIG. 8, the rising of the force F [N] generated in the vibration isolator by driving the actuator is t1 [s (seconds). In addition to delay, the value of this delay t1 is likely to vary for each forward travel stroke. In the backward stroke, there is a problem that the force F rapidly decreases and the Ft curve (curve representing the relationship between F and time t) is not smooth, and vibration cannot be accurately absorbed. In order to solve this problem, a filter member for forming a third liquid chamber between the first liquid chamber and the rubber wall is provided, and means for correcting the Ft curve to a sine wave curve is adopted. However, this increases the number of parts by the amount of the filter member.

これに対して、本発明の上記の構成によれば、ゴム壁に連結したアクチュエータの軸部材を可動子の少なくとも一部として、その外側方に配した固定子に備えるコイルに電流を流して該コイルを励磁することにより往動及び復動のいずれの行程も電気的に駆動するように構成してあるから、図７に示すように、前記力Ｆの立ち上がりの遅れをなくすることができる。そして、一例としてコイルに正弦波交流を流せば、Ｆ−ｔ曲線を、正弦波交流の電流−時間の関係を表す正弦波曲線に対応した正弦波曲線にすることができる。従って、Ｆ−ｔ曲線を正弦波曲線にするための補正手段としての第３液室を設けなくてもよく、フィルター部材が不要になって、部品点数の増加を抑制することができる。   On the other hand, according to the above configuration of the present invention, the shaft member of the actuator connected to the rubber wall is used as at least a part of the mover, and an electric current is passed through the coil provided in the stator disposed on the outer side of the mover. Since both the forward and backward strokes are electrically driven by exciting the coil, the delay of the rising of the force F can be eliminated as shown in FIG. As an example, when a sinusoidal alternating current is passed through the coil, the Ft curve can be made into a sinusoidal curve corresponding to a sinusoidal curve representing the current-time relationship of the sinusoidal alternating current. Therefore, it is not necessary to provide the third liquid chamber as a correction means for making the Ft curve into a sine wave curve, the filter member becomes unnecessary, and an increase in the number of parts can be suppressed.

前記の鉄心可動形のアクチュエータは、前記軸部材の外側方に配した前記固定子の磁極部に、軸方向に隣合って異極をなす少なくとも一対の永久磁石が配されるとともに、該磁極部の周りにコイルが巻回されてなり、該コイルの励磁により発生する起磁力と前記各永久磁石のそれぞれの起磁力との組み合わせにより、前記の軸部材を往復動させるように構成してなるものである。   In the iron core movable actuator, the magnetic pole portion of the stator arranged on the outer side of the shaft member is provided with at least a pair of permanent magnets adjacent to each other in the axial direction and having different polarities, and the magnetic pole portion A coil is wound around and the shaft member is reciprocated by a combination of a magnetomotive force generated by excitation of the coil and a magnetomotive force of each permanent magnet. It is.

具体的には、前記アクチュエータとして、前記第２取付具に取り付けた固定子と、前記軸部材の外周に磁性材部を取設してなり、かつ前記固定子に関して軸方向に往復移動可能に該固定子の内空部において支持してなる可動子とを有し、前記固定子には、前記可動子の磁性材部に対向する磁極部に、前記可動子の往復動方向に隣合った状態で前記磁性材部に対向する一対の永久磁石を、互いに異極をなすように前記往復動方向と直交する方向の磁極の並びを逆にして配設し、前記一対の永久磁石を通る磁束を発生可能なコイルを前記固定子の磁極部の周りに巻回してある構成よりなるものとする。   Specifically, as the actuator, a stator attached to the second fixture, and a magnetic material portion is provided on the outer periphery of the shaft member, and the actuator is capable of reciprocating in the axial direction with respect to the stator. A mover supported in the inner space of the stator, and the stator is adjacent to the magnetic pole part facing the magnetic material part of the mover in the reciprocating direction of the mover The pair of permanent magnets opposed to the magnetic material portion are arranged with the arrangement of magnetic poles in the direction orthogonal to the reciprocating direction so as to be different from each other, and the magnetic flux passing through the pair of permanent magnets is It is assumed that a generatable coil is wound around the magnetic pole portion of the stator.

これにより、前記コイルに正方向の電流（正電流）が流れると、異極をなす一方の永久磁石の起磁力の向きと、コイルの起磁力の向きとが同一になって、両者の起磁力つまりは磁束が合成され、他方の永久磁石の起磁力の向きと、コイルの起磁力の向きとが反対になって、両者の起磁力の磁束が減殺される。これにより、可動子における磁性材部及び軸部材に軸心方向一方側向きの力が作用して、軸部材が軸心方向一方側に移動する。また、コイルに逆方向の電流（負電流）が流れると、前記一方の永久磁石の起磁力の向きと、コイルの起磁力の向きとが反対になり、前記他方の永久磁石の起磁力の向きと、コイルの起磁力の向きとが同一になる。これにより、可動子における磁性材部及び軸部材に軸心方向他方側向きの力が作用して軸部材が軸心方向他方側に移動する。   As a result, when a positive current (positive current) flows through the coil, the direction of the magnetomotive force of one of the permanent magnets having a different polarity is the same as the direction of the magnetomotive force of the coil, so That is, the magnetic fluxes are combined, the direction of the magnetomotive force of the other permanent magnet is opposite to the direction of the magnetomotive force of the coil, and the magnetic force of both magnetomotive forces is reduced. Thereby, a force in one axial direction is applied to the magnetic material portion and the shaft member in the mover, and the shaft member moves to the one axial side. When a reverse current (negative current) flows through the coil, the direction of the magnetomotive force of the one permanent magnet is opposite to the direction of the magnetomotive force of the coil, and the direction of the magnetomotive force of the other permanent magnet And the direction of the magnetomotive force of the coil is the same. Thereby, the force toward the other axial direction acts on the magnetic material portion and the shaft member in the mover, and the shaft member moves to the other side in the axial direction.

すなわち、前記の軸方向に作用する力は、前記コイルを励磁する電流の向き（正電流と負電流）に応じて正逆方向に発生する。従って、コイルの電流の向きを正逆に交互に変えること、つまりは正負電流の変化により、軸部材を軸心方向に往復動させることができる。   That is, the force acting in the axial direction is generated in forward and reverse directions according to the direction of current (positive current and negative current) exciting the coil. Accordingly, the shaft member can be reciprocated in the axial direction by alternately changing the direction of the coil current in the forward and reverse directions, that is, by changing the positive and negative current.

また、鉄心可動形のアクチュエータであって、コイル励磁による起磁力と、異極をなす各永久磁石それぞれの起磁力との組み合わせによる磁気回路の変化を利用することにより、ムービングマグネット型の場合よりも出力の大きいものが得られる。   Also, it is an iron core movable type actuator that uses the change of the magnetic circuit due to the combination of the magnetomotive force due to coil excitation and the magnetomotive force of each permanent magnet that has a different polarity, than in the moving magnet type. A large output can be obtained.

特に、前記往復動方向に隣合って互いに異極をなす前記一対の永久磁石を、前記往復動方向と直交する方向で前記磁性材部を挟んで対向し、かつ対向する磁極が互いに異極をなすように磁極の並びを逆にして、前記可動子を挟んで対向する前記固定子の各磁極部にそれぞれ配設してなるものであると、より強い起磁力を発生させることができる。これにより、ムービングマグネット型の場合に比してはるかに大きな力を得ることができ、以て小型化を容易に可能にする。   In particular, the pair of permanent magnets adjacent to each other in the reciprocating direction and having different polarities are opposed to each other with the magnetic material portion sandwiched in a direction orthogonal to the reciprocating direction, and the opposing magnetic poles have different polarities. If the arrangement of the magnetic poles is reversed and the magnetic pole portions of the stator are opposed to each other with the mover interposed therebetween, a stronger magnetomotive force can be generated. As a result, it is possible to obtain a much greater force than in the case of the moving magnet type, and thus it is possible to easily reduce the size.

前記の能動型液封入式防振装置において、板面が前記軸部材の軸心方向を向き、前記軸心方向で間隔を空けて位置する一対の板バネを介して前記軸部材を前記固定子に支持したものであると、往復移動に伴って可動子の軸部材に摩擦抵抗が加わるのを回避することができ、以て前記軸部材の往復運動がスムーズになる。   In the active liquid filled type vibration isolator, the plate member faces the axial direction of the shaft member, and the shaft member is fixed to the stator via a pair of leaf springs that are spaced apart in the axial direction. If it is supported, frictional resistance is not applied to the shaft member of the mover along with the reciprocating movement, and the reciprocating motion of the shaft member becomes smooth.

また、前記の能動型液封入式防振装置として、前記防振基体の外側において、前記防振基体を覆って前記防振基体の外周面との間に第２液室を形成するダイヤフラムが前記第１取付具と第２取付具とにわたって設けられているものとすることができる。この構成によれば、軸部材にはゴム壁を連結するだけで済み、ゴム壁や軸部材の周りの部品点数を少なくすることができる。   In addition, as the active liquid-filled vibration isolator, a diaphragm that covers the vibration isolator base and forms a second liquid chamber between the anti-vibration base and the outer peripheral surface of the anti-vibration base It can be provided over the first fixture and the second fixture. According to this configuration, it is only necessary to connect the rubber wall to the shaft member, and the number of parts around the rubber wall and the shaft member can be reduced.

前記第２取付具は、前記防振基体が内周部に加硫接着された第１筒金具と、前記ゴム壁が内周部に加硫接着された第２筒金具と、前記ダイヤフラムの下端側が加硫接着された第３筒金具と、前記アクチュエータを収容して固定する第４筒金具とから成り、前記第１〜第４筒金具の軸心方向一端部側においてそれぞれ張出し形成したフランジ部分を一体にかしめ固定してあるものとすることができる。この構造により、第１筒金具と第２筒金具と第３筒金具と第４筒金具を強固に一体化することができる。   The second fixture includes a first tube fitting in which the vibration-proof base is vulcanized and bonded to the inner peripheral portion, a second tube fitting in which the rubber wall is vulcanized and bonded to the inner peripheral portion, and a lower end of the diaphragm. A flange portion formed of a third tube fitting having a side vulcanized and bonded, and a fourth tube fitting for receiving and fixing the actuator, and projecting from one end in the axial direction of the first to fourth tube fittings Can be caulked and fixed together. With this structure, the first tube fitting, the second tube fitting, the third tube fitting, and the fourth tube fitting can be firmly integrated.

さらに、前記第１液室と前記第２液室を連通させるオリフィスが、前記第２取付具における前記第１筒金具と前記第３筒金具との間に、断面略Ｃ形状のリング部材が挟着されることにより形成されてなるものとすることができ、オリフィスの構成が容易になり、シール性も良好に確保できる。   Further, an orifice for communicating the first liquid chamber and the second liquid chamber has a ring member having a substantially C-shaped cross section sandwiched between the first tube fitting and the third tube fitting in the second fixture. It can be formed by being attached, the structure of the orifice becomes easy, and good sealing properties can be secured.

本発明によれば、ゴム壁や軸部材の周りの部品点数を少なくすることができて、構造の簡素化を図ることができ、さらにはアクチュエータの出力を大きくしてしかも小型化できる能動型液封入式防振装置を提供することができる。   According to the present invention, the number of parts around the rubber wall and the shaft member can be reduced, the structure can be simplified, and the output of the actuator can be increased and the size can be reduced. An enclosed vibration isolator can be provided.

以下、本発明の実施の形態を図面に基づいて説明する。図１，図２に自動車にエンジンマウントとして組付けられる能動型液封入式防振装置（以下、「液封入式防振装置」と称する）を示し、このうち、図１は電磁石式のアクチュエータ以外を断面したもの、図２は全体の縦断面図である。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIGS. 1 and 2 show an active liquid-filled vibration isolator (hereinafter referred to as “liquid-filled vibration isolator”) assembled as an engine mount in an automobile. Of these, FIG. 1 is other than an electromagnetic actuator. FIG. 2 is an overall longitudinal sectional view.

この液封入式防振装置は、エンジンに取付けられる第１取付具１と、車体側のフレームに取付けられる筒状の第２取付具２とをゴム状弾性材から成る防振基体３を介して連結し、第２取付具２に前記防振基体３と対向して円板状のゴム壁５を設け、前記防振基体３と前記ゴム壁５との間を第１液室４として形成している。前記防振基体３の外側には、該防振基体３を覆って前記防振基体３の外周面３Ａとの間に前記第１液室４とは別の第２液室６を形成する上窄まりテーパー円筒状のダイヤフラム７が、前記第１取付具１と第２取付具２とにわたって設けられ、該第２液室６と前記第１液室４とが前記第２取付具２に沿って設けられたオリフィス８により連通接続せしめられている。   This liquid-filled vibration isolator has a first attachment 1 attached to an engine and a cylindrical second attachment 2 attached to a frame on the vehicle body via an anti-vibration base 3 made of a rubber-like elastic material. The second fixture 2 is provided with a disk-shaped rubber wall 5 facing the vibration isolating base 3, and the first liquid chamber 4 is formed between the vibration isolating base 3 and the rubber wall 5. ing. A second liquid chamber 6 is formed outside the anti-vibration base 3 so as to cover the anti-vibration base 3 and between the outer peripheral surface 3A of the anti-vibration base 3 and the first liquid chamber 4. A narrowed tapered cylindrical diaphragm 7 is provided across the first fixture 1 and the second fixture 2, and the second liquid chamber 6 and the first liquid chamber 4 extend along the second fixture 2. Are connected by an orifice 8 provided.

そして、前記第１液室４の室壁の一部をなす前記ゴム壁５には、加振手段としての鉄心可動形の電磁石式のリニアアクチュエータ９（以下、「アクチュエータ９」と称する）が前記第１液室４とは反対側から連結されており、前記ゴム壁５を加振変位させることにより第１液室４の圧力を制御するように設けられている。前記アクチュエータ９は、後述のように前記第２取付具２に固定されて設けられる。   The rubber wall 5 forming a part of the chamber wall of the first liquid chamber 4 is provided with an iron core movable type electromagnet type linear actuator 9 (hereinafter referred to as “actuator 9”) as a vibration means. It is connected from the opposite side to the first liquid chamber 4 and is provided so as to control the pressure of the first liquid chamber 4 by oscillating and displacing the rubber wall 5. The actuator 9 is fixed to the second fixture 2 as will be described later.

前記第１取付具１は、下端部が径方向外方にフランジ状に張り出した断面逆Ｔ字形の円柱状に形成され、上端面に開口する雌ねじ部１０に連結ボルトを螺合されてエンジンに連結するようになっている。   The first fixture 1 is formed in a cylindrical shape having a reverse T-shaped cross section with a lower end projecting radially outwardly in a flange shape, and a connecting bolt is screwed into an internal thread portion 10 that opens at the upper end surface. It comes to be connected.

前記第２取付具２は、前記防振基体３が内周部に加硫接着された第１筒金具１１と、前記ゴム壁５が内周部に加硫接着された環状金具でもある第２筒金具１２と、前記ダイヤフラム７の下端側が加硫接着された第３筒金具１３と、前記アクチュエータ９を収容して固定する第４筒金具１４とから成る。前記第１筒金具１１〜第４筒金具１４は、それぞれ円筒状に形成されており、前記第１筒金具１１の下端部（軸心方向一端部に相当）から張出した第１フランジ１５と、前記第２筒金具１２の下端部（軸心方向一端部に相当）から張出した第２フランジ１６と、前記第４筒金具１４の上端部（軸心方向一端部に相当）から張出した第４フランジ１８とをこの順に上から重合わせ、これらを、前記第３筒金具１３の下端部（軸心方向一端部に相当）から張出した第３フランジ１７で包み込むようにその第３フランジ１７を折曲して、前記第１〜第４筒金具１１〜１４を一体にかしめ固定してある。   The second fixture 2 is also a first cylindrical fitting 11 in which the vibration-proof base 3 is vulcanized and bonded to the inner peripheral portion, and an annular fitting in which the rubber wall 5 is vulcanized and bonded to the inner peripheral portion. It comprises a cylindrical metal fitting 12, a third cylindrical metal fitting 13 to which the lower end side of the diaphragm 7 is vulcanized and bonded, and a fourth cylindrical metal fitting 14 that accommodates and fixes the actuator 9. The first tube fitting 11 to the fourth tube fitting 14 are each formed in a cylindrical shape, and a first flange 15 protruding from a lower end portion (corresponding to one end portion in the axial direction) of the first tube fitting 11, A second flange 16 projecting from the lower end portion (corresponding to one end portion in the axial direction) of the second tubular fitting 12 and a fourth flange projecting from the upper end portion (corresponding to one end portion in the axial direction) of the fourth tubular fitting 14. The flange 18 and the flange 18 are overlapped in this order from above, and the third flange 17 is folded so as to be wrapped by the third flange 17 protruding from the lower end (corresponding to one end in the axial direction) of the third tube fitting 13. The first to fourth tubular fittings 11 to 14 are bent and fixed integrally.

前記第１筒金具１１の内周面部に、防振基体３の下端部に連なる第１ゴム膜２２が加硫接着され、第３筒金具１３の内周面部に、前記ダイヤフラム７の下端部に連なる第２ゴム膜２３が加硫接着されて、両内周面部の全てがゴム部材（第１ゴム膜２２・第２ゴム膜２３・ダイヤフラム７・防振基体３等）で覆われている。また、前記第４筒金具１４に支持ブラケット１９が固着され、該支持ブラケット１９に車体側のフレームに連結する複数の連結ボルト２０が圧入固着されている。   A first rubber film 22 connected to the lower end portion of the vibration isolating base 3 is vulcanized and bonded to the inner peripheral surface portion of the first tube fitting 11, and the lower end portion of the diaphragm 7 is attached to the inner peripheral surface portion of the third tube fitting 13. The continuous second rubber film 23 is vulcanized and bonded, and all of the inner peripheral surface portions are covered with rubber members (the first rubber film 22, the second rubber film 23, the diaphragm 7, the vibration isolating base 3, etc.). Further, a support bracket 19 is fixed to the fourth cylindrical metal member 14, and a plurality of connection bolts 20 connected to the frame on the vehicle body side are press-fitted and fixed to the support bracket 19.

前記防振基体３は、底部側が中空の円錐台形状に形成され、その上端面が第１取付具１の張出した下端部に、また下端部が前記第１筒金具１１の内周面部の全周にそれぞれ加硫接着されている。   The anti-vibration base 3 is formed in the shape of a circular truncated cone on the bottom side, the upper end surface thereof is at the lower end portion of the first fixture 1 and the lower end portion is the entire inner peripheral surface portion of the first tubular fitting 11. Each is vulcanized and bonded to the circumference.

前記ダイヤフラム７は、ゴム状弾性材から成り、その上端部７ａが、下端部にフランジ４１を備えた小径円筒状の連結筒２４の外周部および前記フランジ４１の背面部に加硫接着され、また下端部７ｂが、前記第３筒金具１３の上端部の内外周面に加硫接着されている。前記連結筒２４は前記第１取付具１に対し上方側から圧入されて外嵌している。   The diaphragm 7 is made of a rubber-like elastic material, and an upper end portion 7a thereof is vulcanized and bonded to the outer peripheral portion of a small-diameter cylindrical connecting cylinder 24 having a flange 41 at the lower end portion and the back surface portion of the flange 41. The lower end portion 7 b is vulcanized and bonded to the inner and outer peripheral surfaces of the upper end portion of the third cylindrical metal fitting 13. The connecting cylinder 24 is press-fitted from the upper side into the first fixture 1 and is externally fitted.

前記オリフィス８は、径方向外方側が開放した断面Ｃ形状（コの字状）の円環形リング部材２５を、前記第１筒金具１１に対し下端面が前記第１フランジ１５の背面に圧接するように外嵌せしめるとともに、前記第３筒金具１３の内周面側の前記第２ゴム膜２３に開放側の外周部を圧着させるように嵌合して、前記第２取付具２における前記第１筒金具１１と前記第３筒金具１３との間に挟着することにより形成している。   The orifice 8 has a ring-shaped ring member 25 having a C-shaped cross-section (U-shape) opened on the radially outer side, and a lower end surface of the orifice 8 is pressed against the back surface of the first flange 15 with respect to the first cylindrical fitting 11. And fitting the second rubber film 23 on the inner peripheral surface side of the third cylindrical metal fitting 13 so that the outer peripheral portion on the open side is pressure-bonded. It is formed by being sandwiched between a single cylinder fitting 11 and the third cylinder fitting 13.

前記のゴム壁５の加振手段である鉄心可動形の電磁石式のアクチュエータ９は、固定子に関して軸方向に往復移動可能な可動子の少なくとも一部を構成する軸部材２７を縦姿勢に設定し、該軸部材２７の先端部に円板状の頭部２６を張出し形成し、これを前記ゴム壁５の加硫成形工程で該ゴム壁５の中央部に埋設・連結してある。そして、後述のように固定子に備えるコイルを励磁することにより、前記軸部材２７を往動と復動のいずれの行程も電気的に駆動させるように該アクチュエータ９を構成してある。次に、このアクチュエータ９の構造・作用等について詳しく説明する。   The iron core movable electromagnet actuator 9 which is the vibration means of the rubber wall 5 sets the shaft member 27 that constitutes at least a part of the movable member that can reciprocate in the axial direction with respect to the stator in a vertical posture. A disc-shaped head portion 26 is formed in a projecting manner at the tip of the shaft member 27, and is embedded and connected to the central portion of the rubber wall 5 in the vulcanization molding process of the rubber wall 5. The actuator 9 is configured to electrically drive the shaft member 27 in both forward and backward strokes by exciting a coil provided in the stator as will be described later. Next, the structure and operation of the actuator 9 will be described in detail.

前記アクチュエータ９は、前記第２取付具２に取り付けた固定子２８と、該固定子２８に関して軸方向に往復動可能に前記固定子２８の内空部（軸心部）において支持した可動子３０とを有してなる。   The actuator 9 includes a stator 28 attached to the second fixture 2 and a mover 30 supported in an inner space (axial part) of the stator 28 so as to be capable of reciprocating in the axial direction with respect to the stator 28. It has.

前記固定子２８は、電磁鋼板等の磁性金属よりなる多数の環状（主に角形環状）の金属板を積層して成るヨーク２８ａと、該ヨーク２８ａの軸心方向の中央部において前記可動子３０を挟んで相対向するように両側より内空部に向かって突出する磁極部２９，２９を有している。   The stator 28 includes a yoke 28a formed by laminating a large number of annular (mainly rectangular annular) metal plates made of a magnetic metal such as an electromagnetic steel plate, and the movable element 30 at a central portion in the axial direction of the yoke 28a. The magnetic pole portions 29 and 29 protrude from both sides toward the inner space so as to face each other.

前記可動子３０は、前記軸部材２７の軸心方向中間部に、前記同様の磁性金属よりなる多数の金属円板を積層して成る可動子鉄心としての磁性材部３０ａが外嵌固着されてなり、前記軸部材２７が前記固定子２８に一対の板バネ３５，３５を介して上下方向（軸部材２７の軸心方向）に往復動可能に連結して支持されている。   In the mover 30, a magnetic material portion 30a as a mover iron core formed by laminating a number of metal disks made of the same magnetic metal as described above is fixed to the middle portion of the shaft member 27 in the axial direction. Thus, the shaft member 27 is connected to and supported by the stator 28 via a pair of leaf springs 35 and 35 so as to be capable of reciprocating in the vertical direction (axial direction of the shaft member 27).

前記一対の板バネ３５，３５は、角形の一部を内方に入り込ませた変形リング状に形成され、板面が上下方向を向いた状態で、上下方向で互いに間隔を空けて位置している。つまり、各板バネ３５の内周側の第１連結部３６を、前記軸部材２７に設けたリング状の溝に食い込ませ、各板バネ３５の外周側の第２連結部３７を、ボルト４３及びボルト挿通パイプ３８を介して固定子２８に固定してある。固定子２８はケース４０に一体に固定され、ケース４０の上半部が前記第４筒金具１４に固着され、下半部が前記ブラケット１９の底板４２にボルト固定されている。   The pair of leaf springs 35, 35 are formed in a deformed ring shape in which a part of a square is inserted inward, and are located at a distance from each other in the vertical direction with the plate surface facing the vertical direction. Yes. That is, the first connecting portion 36 on the inner peripheral side of each leaf spring 35 is bitten into the ring-shaped groove provided on the shaft member 27, and the second connecting portion 37 on the outer peripheral side of each leaf spring 35 is connected to the bolt 43. And, it is fixed to the stator 28 via a bolt insertion pipe 38. The stator 28 is integrally fixed to the case 40, the upper half portion of the case 40 is fixed to the fourth tube fitting 14, and the lower half portion is bolted to the bottom plate 42 of the bracket 19.

図３〜図６にも示すように、前記可動子３０の磁性材部３０ａに対向する前記固定子２８の磁極部２９，２９の先端つまり内端には、前記可動子３０の往復動方向（上下方向）に隣合った状態で並んで前記磁性材部３０ａに対向する上下一対の円弧板状をなす永久磁石３１，３２を、それらの磁極が互いにＮＳ交互の異極をなすように、前記往復移動方向と直交する方向（左右方向）に磁極を並べて、かつ互いの磁極（Ｎ極とＳ極）の並びが逆になる状態に配設している。なお、上側の永久磁石３１の上端から下側の永久磁石３２の下端までの長さは、前記磁性材部３０ａの上下方向（軸心方向）の長さよりも長くなっている。   As shown also in FIGS. 3 to 6, the reciprocating direction of the mover 30 (the inner end of the magnetic pole part 29, 29 of the stator 28 facing the magnetic material part 30 a of the mover 30) The permanent magnets 31 and 32 forming a pair of upper and lower circular arc plates facing each other in the state of being adjacent to each other in the vertical direction) so that their magnetic poles have NS different polarities. The magnetic poles are arranged in a direction (left-right direction) orthogonal to the reciprocating direction, and the arrangement of the magnetic poles (N pole and S pole) is reversed. Note that the length from the upper end of the upper permanent magnet 31 to the lower end of the lower permanent magnet 32 is longer than the length of the magnetic material portion 30a in the vertical direction (axial direction).

そして、前記固定子２８の磁極部２９には、その周りにコイル３３を巻回、つまり前記往復動方向と直交する方向（図２の左右方向）の軸心周りにコイル３３を巻回して、前記一対の永久磁石３１，３２を通る磁束を発生可能に構成してある。   Then, the coil 33 is wound around the magnetic pole portion 29 of the stator 28, that is, the coil 33 is wound around the axis in the direction orthogonal to the reciprocating direction (the left-right direction in FIG. 2). The magnetic flux passing through the pair of permanent magnets 31 and 32 can be generated.

図の場合は、前記一対の永久磁石３１，３２から成る磁石部３４を、前記可動子３０を挟んで対向する前記固定子２８の二つの磁極部２９，２９の内端部にそれぞれ設けており、両磁極部２９，２９それぞれの磁石部３４，３４の永久磁石３１，３２は、前記往復移動方向と直交する方向で前記磁性材部３０ａを挟んで対向するとともに、この対向する磁極が互いに異極をなすように磁極の並びを左右で逆にして配設している。これに対応して、前記コイル３３についても、それぞれが各磁石部３４の左右外方側に位置する状態で前記磁極部２９，２９に巻回されて配置されている。   In the case of the figure, a magnet portion 34 composed of the pair of permanent magnets 31 and 32 is provided at inner end portions of two magnetic pole portions 29 and 29 of the stator 28 facing each other with the mover 30 interposed therebetween. The permanent magnets 31 and 32 of the magnet portions 34 and 34 of the magnetic pole portions 29 and 29 are opposed to each other with the magnetic material portion 30a interposed therebetween in a direction orthogonal to the reciprocating direction, and the opposing magnetic poles are different from each other. The arrangement of the magnetic poles is reversed from left to right so as to form a pole. Correspondingly, the coils 33 are also wound around the magnetic pole portions 29 and 29 in a state where the coils 33 are positioned on the left and right outer sides of the respective magnet portions 34.

図３，図５に示すように、前記一対のコイル３３，３３は互いに接続されている。図３，図４に示すように、右側の上下一対の永久磁石３１，３２のうち上側の永久磁石３１は、磁性材部３０ａと対向する面側がＮ極、反対面側がＳ極であり、下側の永久磁石３２は、磁性材部３０ａと対向する面側がＳ極、反対面側がＮ極である。左側の一対の永久磁石３１，３２のうち上側の永久磁石３１は、磁性材部３０ａと対向する面側がＳ極、反対側がＮ極であり、下側の永久磁石３２は、磁性材部３０ａと対向する面側がＮ極、反対側がＳ極である。図３，図４において、白抜きの左右方向を向いた矢印は永久磁石３１，３２の起磁力の向きを表す。この起磁力は上側では左側を向き、下側では右側を向いている。   As shown in FIGS. 3 and 5, the pair of coils 33 and 33 are connected to each other. As shown in FIGS. 3 and 4, the upper permanent magnet 31 of the pair of upper and lower permanent magnets 31 and 32 on the right side has an N pole on the side facing the magnetic material portion 30a and an S pole on the opposite side. The side permanent magnet 32 has an S pole on the side facing the magnetic material portion 30a and an N pole on the opposite side. Of the pair of left permanent magnets 31, 32, the upper permanent magnet 31 has an S pole on the surface facing the magnetic material portion 30a and an N pole on the opposite side, and the lower permanent magnet 32 has a magnetic material portion 30a. The opposite side is the N pole and the opposite side is the S pole. 3 and 4, the white arrows pointing in the left-right direction indicate the direction of the magnetomotive force of the permanent magnets 31 and 32. The magnetomotive force is directed to the left side at the upper side and to the right side at the lower side.

上記の構成により、コイル３３への非通電時は、左右の磁石部３４，３４における永久磁石３１，３２による磁束が該両磁石に対向する磁性材部３０ａの部分を通じて短絡している。そして、図４に示すように、コイル３３に正方向の電流が流れると、コイル３３に矢印方向の起磁力が発生し、その結果、上側の永久磁石３１の起磁力の向きと、コイル３３の起磁力の向き（図４の矢印）とが同一になって、磁石の磁束が合成されて起磁力が強まり、他方、下側の永久磁石３２の起磁力の向きと、コイル３３の起磁力の向きとが反対になって、両者の起磁力が相殺されて弱まる。その結果、前記可動子３０の磁性材部３０ａ及び軸部材２７に上向きの力（白抜きの矢印で示してある）が作用して、該軸部材２７が上昇する。   With the above configuration, when the coil 33 is not energized, the magnetic flux generated by the permanent magnets 31 and 32 in the left and right magnet portions 34 and 34 is short-circuited through the portion of the magnetic material portion 30a that faces both the magnets. As shown in FIG. 4, when a positive current flows in the coil 33, a magnetomotive force in the direction of the arrow is generated in the coil 33. As a result, the direction of the magnetomotive force of the upper permanent magnet 31 and the coil 33 The direction of the magnetomotive force (the arrow in FIG. 4) is the same, the magnetic fluxes of the magnets are combined to increase the magnetomotive force, while the direction of the magnetomotive force of the lower permanent magnet 32 and the magnetomotive force of the coil 33 are increased. The direction is reversed, and the magnetomotive force of both is canceled and weakened. As a result, an upward force (indicated by a white arrow) acts on the magnetic material portion 30a and the shaft member 27 of the mover 30, and the shaft member 27 rises.

また、図６に示すように、コイル３３に逆方向の電流（負電流）が流れると、前記とは反対に、上側の永久磁石３１の起磁力の向きと、コイル３３の起磁力の向きとが反対になって磁束が相殺され起磁力が弱まるとともに、下側の永久磁石３２の起磁力の向きと、コイル３３の起磁力の向きとが同一になって、この下側で磁石の磁束が合成されて起磁力が強まる。これにより、前記可動子３０の磁性材部３０ａ及び軸部材２７に下向きの力（白抜きの矢印で示してある）が作用して、該軸部材２７が下降する。そして、前記コイル３３の電流の向きが正逆に交互に変わることで、軸部材２７が上下に往復動する。   Further, as shown in FIG. 6, when a current (negative current) in the reverse direction flows through the coil 33, the direction of the magnetomotive force of the upper permanent magnet 31 and the direction of the magnetomotive force of the coil 33 are reversed. The magnetic flux is canceled and the magnetomotive force is weakened, and the direction of the magnetomotive force of the lower permanent magnet 32 and the direction of the magnetomotive force of the coil 33 are the same. Combined to increase magnetomotive force. Thereby, a downward force (indicated by a white arrow) acts on the magnetic material portion 30a and the shaft member 27 of the mover 30, and the shaft member 27 is lowered. Then, the direction of the current of the coil 33 alternately changes forward and reverse, whereby the shaft member 27 reciprocates up and down.

前記アクチュエータ９を上記のように往動行程と復動行程のいずれの行程も電気的に駆動させるから、コイル３３に正弦波交流を流すことで、前記可動子３０の軸部材２７を交流電流の向きの変化に対応させて上下に往復動させることができる。特に、互いに異極をなす一対の永久磁石３１，３２のそれぞれの起磁力の向きと、コイル３３に生じる起磁力との組み合わせにより、比較的コンパクトな装置でありながら、ムービングマグネット型の場合よりも出力の大きいものが得られるので、軸部材２７を確実に強い力で往復動させることができ、第１液室４の圧力制御を確実になすことができる。   Since the actuator 9 is electrically driven in both the forward stroke and the backward stroke as described above, by passing a sine wave alternating current through the coil 33, the shaft member 27 of the movable element 30 is made to have an alternating current. It can be reciprocated up and down corresponding to the change in direction. In particular, the combination of the direction of the magnetomotive force of each of the pair of permanent magnets 31 and 32 having different polarities and the magnetomotive force generated in the coil 33 is a relatively compact device, but more than a moving magnet type. Since a large output is obtained, the shaft member 27 can be reliably reciprocated with a strong force, and the pressure control of the first liquid chamber 4 can be reliably performed.

そして図７に示すように、前記アクチュエータ９の駆動によって液封入式防振装置に発生する力Ｆ［Ｎ］と時間ｔ［ｓ］との関係を示すＦ−ｔ曲線を、正弦波交流の電流−時間の関係を表す正弦波曲線に対応した正弦波曲線にすることができる。   Then, as shown in FIG. 7, a ft curve showing the relationship between the force F [N] generated in the liquid-filled vibration isolator by the driving of the actuator 9 and the time t [s] is expressed as a sinusoidal alternating current. A sine wave curve corresponding to a sine wave curve representing a time relationship can be obtained.

［別実施形態］
図９は、本発明の能動型液封入式防振装置の一部の変更例を示し、基本的に上記した実施例と同様の構成をなしている。同じ構成部分及び部材には同符号を付してその詳しい説明を省略する。 [Another embodiment]
FIG. 9 shows a modification of a part of the active liquid-filled vibration isolator of the present invention, which basically has the same configuration as the above-described embodiment. The same components and members are denoted by the same reference numerals, and detailed description thereof is omitted.

この実施例における上記の実施例と相違する点について説明する。第２取付具２において、前記ゴム壁５の外周部が加硫接着される部材が、円形平板状の環状金具１１２よりなり、この内周に前記ゴム壁５が加硫接着されており、該環状金具１１２の外周部１１６が第１の筒金具１１及び第４の筒金具１４のフランジ１５及び１８とともに第３筒金具１３のフランジ１７によりかしめ固定されている。また、ブラケット１９は、前記第４筒金具１４のくびれ部１４ａにまで延びて固着され、且つ底板が省かれている。鉄心可動形の電磁石式のアクチュエータ９は、前記第４筒金具１４とブラケット１９にねじ止め手段により固定されている。軸方向寸法は上記した実施例より長くなっているが、その内部構造は、上記した実施例と同様である。   The difference in this embodiment from the above embodiment will be described. In the second fixture 2, the member to which the outer peripheral portion of the rubber wall 5 is vulcanized and bonded is composed of a circular plate-shaped annular metal fitting 112, and the rubber wall 5 is vulcanized and bonded to the inner periphery thereof. The outer peripheral portion 116 of the annular fitting 112 is caulked and fixed by the flange 17 of the third tubular fitting 13 together with the flanges 15 and 18 of the first tubular fitting 11 and the fourth tubular fitting 14. The bracket 19 extends to and is fixed to the constricted portion 14a of the fourth tubular fitting 14, and the bottom plate is omitted. The iron core movable type electromagnet actuator 9 is fixed to the fourth tube fitting 14 and the bracket 19 by screwing means. Although the axial dimension is longer than that of the above embodiment, the internal structure is the same as that of the above embodiment.

なお、本発明は、エンジンマウントに限られず、種々の使用が可能であり、例えば、サスペンションメンバーと車体側のフレームとの間に設けられるマウントにも適用することができる。   The present invention is not limited to an engine mount, and can be used in various ways. For example, the present invention can also be applied to a mount provided between a suspension member and a vehicle body side frame.

また、前記磁石部３４を、次の［ア］のように構成してあってもよい。   Further, the magnet part 34 may be configured as in the following [A].

［ア］前記右側の上下一対の永久磁石３１，３２のうち上側の永久磁石３１は、磁性材部３０ａと対向する面側がＳ極、反対面側がＮ極であり、下側の永久磁石３２は、磁性材部３０ａと対向する面側がＮ極、反対面側がＳ極である。左側の一対の永久磁石３１，３２のうち上側の永久磁石３１は、磁性材部３０ａと対向する面側がＮ極、反対側がＳ極であり、下側の永久磁石３２は、磁性材部３０ａと対向する面側がＳ極、反対側がＮ極であるもの。 [A] Of the pair of upper and lower permanent magnets 31 and 32 on the right side, the upper permanent magnet 31 has an S pole on the side facing the magnetic material portion 30a and an N pole on the opposite side, and the lower permanent magnet 32 has The surface facing the magnetic material portion 30a is the N pole, and the opposite surface is the S pole. Of the pair of left permanent magnets 31 and 32, the upper permanent magnet 31 has an N pole on the surface facing the magnetic material portion 30a and an S pole on the opposite side, and the lower permanent magnet 32 has a magnetic material portion 30a. The opposite side is the S pole and the opposite side is the N pole.

本発明は、内部液室の圧力を制御することで防振効果を高める形式の能動型液封入式防振装置として、エンジンマウントに特に好適に利用でき、さらに他のマウントにも利用できる。   INDUSTRIAL APPLICABILITY The present invention can be particularly suitably used for an engine mount as an active liquid-filled vibration isolator that enhances the vibration isolation effect by controlling the pressure of the internal liquid chamber, and can also be used for other mounts.

本発明の能動型液封入式防振装置の一部縦断面図である。It is a partial longitudinal cross-sectional view of the active liquid filled type vibration isolator of the present invention. 同上の能動型液封入式防振装置の縦断面図である。It is a longitudinal cross-sectional view of an active type liquid enclosure type vibration isolator same as the above. アクチュエータの作用を示す略示説明図である。FIG. 6 is a schematic explanatory diagram illustrating the action of an actuator. コイルに電流を正方向に流したときのアクチュエータの作用を示す略示説明図である。It is a schematic explanatory drawing which shows the effect | action of an actuator when an electric current is sent through a coil to the positive direction. アクチュエータの作用を示す略示説明図である。FIG. 6 is a schematic explanatory diagram illustrating the action of an actuator. コイルに電流を逆方向に流したときのアクチュエータの作用を示す略示説明図である。It is a schematic explanatory drawing which shows the effect | action of an actuator when an electric current is sent through a coil in the reverse direction. 能動型液封入式防振装置に加わる力Ｆと時間ｔの関係を示す図である。It is a figure which shows the relationship between the force F and time t which are added to an active liquid enclosure type vibration isolator. 従来の構造の能動型液封入式防振装置に加わる力Ｆと時間ｔの関係を示す図である。It is a figure which shows the relationship between the force F and time t which are applied to the active type liquid enclosure type vibration isolator of the conventional structure. 本発明の能動型液封入式防振装置の他の実施例の一部縦断面図である。It is a partial longitudinal cross-sectional view of another Example of the active type liquid filled type vibration isolator of the present invention.

符号の説明Explanation of symbols

１ 第１取付具
２ 第２取付具
３ 防振基体
４ 第１液室
５ ゴム壁
６ 第２液室
７ ダイヤフラム
８ オリフィス
９ アクチュエータ
１１ 第１筒金具
１２ 第２筒金具
１３ 第３筒金具
１４ 第４筒金具
１５ (第１)フランジ
１６ (第２)フランジ
１７ (第３)フランジ
１８ (第４)フランジ
２７ 軸部材
２８ 固定子
２８ａ ヨーク
２９ 磁極部
３０ 可動子
３０ａ 磁性材部
３１ 永久磁石
３２ 永久磁石
３３ コイル
３４ 磁石部
３５ 板バネ DESCRIPTION OF SYMBOLS 1 1st fixture 2 2nd fixture 3 Anti-vibration base | substrate 4 1st liquid chamber 5 Rubber wall 6 2nd liquid chamber 7 Diaphragm 8 Orifice 9 Actuator 11 1st cylinder bracket 12 2nd cylinder bracket 13 3rd cylinder bracket 14 1st 4-cylinder bracket 15 (first) flange 16 (second) flange 17 (third) flange 18 (fourth) flange 27 shaft member 28 stator 28a yoke 29 magnetic pole portion 30 mover 30a magnetic material portion 31 permanent magnet 32 permanent Magnet 33 Coil 34 Magnet part 35 Leaf spring

Claims (8)

第１取付具と筒状の第２取付具をゴム状弾性材から成る防振基体を介して連結し、前記第２取付具に前記防振基体と対向してゴム壁を設け、前記防振基体と前記ゴム壁との間を第１液室とし、この第１液室とは別にダイヤフラムが室壁の一部をなす第２液室を設け、前記第１液室と前記第２液室とをオリフィスにより連通させ、前記第１液室の室壁の一部をなす前記ゴム壁に連結した加振手段により該ゴム壁を加振して前記第１液室の圧力を制御するようにした能動型液封入式防振装置であって、
前記加振手段として、前記ゴム壁に連結した軸部材をその外方に配した固定子に関して軸方向に往復動可能な可動子の少なくとも一部として構成した鉄心可動形のアクチュエータを備え、前記固定子に備えるコイルを励磁することにより、前記軸部材を往動行程及び復動行程の両方向に駆動して前記ゴム壁を加振するように構成してなることを特徴とする能動型液封入式防振装置。 The first fixture and the cylindrical second fixture are connected via a vibration-proof base made of a rubber-like elastic material, and a rubber wall is provided on the second fixture so as to face the vibration-proof base. A first liquid chamber is provided between the base and the rubber wall, and a second liquid chamber in which a diaphragm forms part of the chamber wall is provided separately from the first liquid chamber, and the first liquid chamber and the second liquid chamber are provided. Are communicated with each other by an orifice, and the pressure of the first liquid chamber is controlled by exciting the rubber wall by a vibration means connected to the rubber wall forming a part of the chamber wall of the first liquid chamber. Active liquid-filled vibration isolator,
The vibrating means includes an iron core movable actuator configured as at least a part of a movable element capable of reciprocating in the axial direction with respect to a stator arranged on the outer side of a shaft member connected to the rubber wall. An active liquid-sealed type wherein the shaft member is driven in both forward and backward strokes to excite the rubber wall by exciting a coil provided in the child. Anti-vibration device. 前記アクチュエータは、前記軸部材の外方に配した前記固定子の磁極部に、軸方向に隣合って異極をなす少なくとも一対の永久磁石が配されるとともに、該磁極部の周りにコイルが巻回されてなり、該コイル励磁により発生する起磁力と前記各永久磁石のそれぞれの起磁力との組み合わせにより、前記軸部材を往復動させるように構成してなる請求項１に記載の能動型液封入式防振装置。   In the actuator, at least a pair of permanent magnets having different polarities adjacent to each other in the axial direction are arranged on the magnetic pole part of the stator arranged outside the shaft member, and a coil is disposed around the magnetic pole part. The active type according to claim 1, wherein the shaft member is reciprocated by a combination of a magnetomotive force generated by coil excitation and a magnetomotive force of each permanent magnet. Liquid-filled vibration isolator. 前記アクチュエータは、前記第２取付具に取り付けた固定子と、前記軸部材の外周に磁性材部を取設してなり、かつ前記固定子に関して軸方向に往復移動可能に該固定子の内空部において支持してなる可動子とを有し、前記固定子には、前記可動子の磁性材部に対向する磁極部に、前記可動子の往復動方向に隣合った状態で互いに異極をなす一対の永久磁石が、前記往復動方向と直交する方向の磁極の並びを逆にして配設され、前記一対の永久磁石を通る磁束を発生可能なコイルが前記磁極部の周りに巻回されてなる請求項２に記載の能動型液封入式防振装置。   The actuator includes a stator attached to the second fixture, and a magnetic material portion provided on an outer periphery of the shaft member, and is capable of reciprocating in the axial direction with respect to the stator. The stator has a magnetic pole part facing the magnetic material part of the mover, and the magnetic poles opposite to each other in a state adjacent to the reciprocating direction of the mover. A pair of permanent magnets is arranged with the arrangement of magnetic poles in a direction orthogonal to the reciprocating direction reversed, and a coil capable of generating magnetic flux passing through the pair of permanent magnets is wound around the magnetic pole portion. The active liquid-filled vibration isolator according to claim 2. 前記往復動方向に隣合って互いに異極をなす前記一対の永久磁石を、前記往復動方向と直交する方向で前記磁性材部を挟んで対向させて、かつ対向する磁極が互いに異極をなすように磁極の並びを逆にして、可動子を挟んで対向する前記固定子の各磁極部にそれぞれ配設してなる請求項３に記載の能動型液封入式防振装置。   The pair of permanent magnets adjacent to each other in the reciprocating direction and having different polarities are opposed to each other with the magnetic material portion interposed therebetween in a direction perpendicular to the reciprocating direction, and the opposing magnetic poles are different from each other. 4. The active liquid filled type vibration damping device according to claim 3, wherein the arrangement of the magnetic poles is reversed, and the magnetic pole portions of the stator are opposed to each other with the mover interposed therebetween. 板面が前記可動子の軸心方向を向き、前記軸心方向で間隔を空けて位置する一対の板バネを介して、前記可動子の軸部材を前記固定子に支持してなる請求項３または４に記載の能動型液封入式防振装置。   4. The shaft member of the mover is supported by the stator via a pair of leaf springs whose plate surfaces face the axial direction of the mover and are spaced apart in the axial direction. 4. The active liquid-filled vibration isolator according to 4. 前記防振基体の外側において、前記防振基体を覆って前記防振基体の外周面との間に第２液室を形成するダイヤフラムが前記第１取付具と第２取付具とにわたって設けられており、この第２液室が前記第２取付具に沿うオリフィスにより前記第１液室と連通せしめられてなる請求項１〜５のいずれか１項に記載の能動型液封入式防振装置。   A diaphragm that covers the anti-vibration base and forms a second liquid chamber between the anti-vibration base and the outer peripheral surface of the anti-vibration base is provided across the first attachment and the second attachment. The active liquid-filled vibration isolator according to any one of claims 1 to 5, wherein the second liquid chamber is communicated with the first liquid chamber by an orifice along the second fixture. 前記第２取付具は、前記防振基体が内周部に加硫接着された第１筒金具と、前記ゴム壁が内周部に加硫接着された第２筒金具と、前記ダイヤフラムの下端側が加硫接着された第３筒金具と、前記アクチュエータを収容して固定する第４筒金具とから成り、前記第１〜第４筒金具の軸心方向一端部側においてそれぞれ張出し形成したフランジ部分を一体にかしめ固定してある請求項１〜６のいずれか１項に記載の能動型液封入式防振装置。   The second fixture includes a first tube fitting in which the vibration-proof base is vulcanized and bonded to the inner peripheral portion, a second tube fitting in which the rubber wall is vulcanized and bonded to the inner peripheral portion, and a lower end of the diaphragm. A flange portion formed of a third tube fitting having a side vulcanized and bonded, and a fourth tube fitting for receiving and fixing the actuator, and projecting from one end in the axial direction of the first to fourth tube fittings The active liquid-sealed vibration isolator according to any one of claims 1 to 6, wherein 前記第１液室と前記第２液室を連通させるオリフィスが、前記第２取付具における前記第１筒金具と前記第３筒金具との間に、断面略Ｃ形状のリング部材が挟着されることにより形成されてなる請求項７に記載の能動型液封入式防振装置。
A ring member having a substantially C-shaped cross section is sandwiched between the first tube fitting and the third tube fitting in the second fixture for the orifice for communicating the first liquid chamber and the second liquid chamber. The active liquid-sealed vibration isolator according to claim 7 formed by

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