JPH08247217A - Control type vibration proof mount - Google Patents

Abstract

PURPOSE: To sufficiently reduce the transmission ratio to the vibration input with a simple structure and with small driving energy. CONSTITUTION: A first fitting member 1 to be connected to the engine side and a second fitting member 2 to be connected to a vehicle body side are connected to each other by a main rubber elastic body 3 extending in the vibration input direction. A base end part 4b of a leaf spring 4 is interposed and connected at the middle position in the vertical direction of the main rubber elastic body 3, and the tip part 4a is extended to the direction orthogonal to the vibration input direction. The middle position between the base end part and the tip part of the leaf spring is adhered to the upper face of a rubber elastic supporting body 7 fixed to the end part of the second fitting member to make the fulcrum of the lever. A mass member 5 is fitted to the tip part of the leaf spring through an actuator 6, and the mass member is synchronized with the input vibration by controlling the operation of the actuator to achieve the forced excitation in the vibration input direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control type vibration proof mount capable of obtaining a large vibration suppressing effect with a small driving energy.

[0002]

2. Description of the Related Art Conventionally, as a control type vibration proof mount,
A liquid chamber is formed inside the main rubber elastic body, and a liquid pressure variation is forcibly given to the liquid in the liquid chamber by an actuator based on a signal from the vibration detecting means (see, for example, Japanese Patent Publication No. 64-1332). ) Or an electrostrictive element laminated on the main rubber elastic body in the vibration input direction and applying a voltage to the electrostrictive element to generate distortion in the vibration input direction is known (for example, (See Japanese Patent Publication No. 3-10818).

[0003]

However, in the above-mentioned conventional control type vibration damping mount for controlling the liquid pressure, a conduit for propagating a pressure wave to the liquid inside is provided in the liquid chamber containing the liquid. There is an inconvenience that the structure becomes complicated, such as the need for communication. In addition, there is a disadvantage that the control of the hydraulic pressure fluctuation by the pressure wave is complicated, and that the hydraulic pressure fluctuation requires a considerably large driving energy and consumes a relatively large driving energy for the vibration isolation. is there.

Further, in the conventional control type vibration damping mount for controlling the voltage applied to the electrostrictive element, the displacement amount is limited due to the characteristics of the electrostrictive element even if the number of laminated layers is increased. There is an inconvenience that the forced displacement of the stroke cannot be applied, and therefore the transmissibility for a large amplitude input vibration cannot be sufficiently reduced.

On the other hand, it is conceivable that the mass member is forcibly excited in a phase opposite to the input vibration by the actuator to control the vibration so as to cancel the input vibration. In this case, the actuator is driven by the above-mentioned input. Since it is necessary to cancel the vibration as much as possible, the driving energy needs to be correspondingly large.

The present invention has been made in view of the above circumstances, and an object thereof is to sufficiently reduce the transmissibility of vibration input with a simple structure and a small driving energy. To achieve.

[0007]

In order to achieve the above object, the invention according to claim 1 provides a first mounting member connected to one side of a vibration source and a vibration receiving portion, and the first mounting member. A second mounting member which is arranged apart from the member in the vibration input direction and is connected to the other side of the vibration generating source and the vibration receiving portion, and a vibration isolator interposed between the first and second mounting members. It is intended to have a main rubber elastic body for use. In this structure, an arm member that is connected to any one of the first mounting member, the second mounting member, and the main rubber elastic body and extends from the connecting portion in a direction orthogonal to the vibration input direction, and the arm member. A configuration including a mass member arranged on the tip end side of the member, and an actuator interposed between the mass member and the arm member to actuate the mass member in a vibration input direction in synchronization with input vibration. It is what

According to a second aspect of the present invention, in the first aspect of the invention, the arm member is interposed and connected so as to cross the intermediate position in the vibration input direction of the main rubber elastic body.

According to a third aspect of the invention, in the first aspect of the invention, the arm member is connected to the first mounting member or the second mounting member.

According to a fourth aspect of the invention, in the invention of the second or third aspect, the arm member is attached to the first attachment member or the second attachment member at an intermediate position between the connecting portion and the tip end portion. On the other hand, it is elastically supported via a rubber elastic support.

According to a fifth aspect of the present invention, in the fourth aspect of the invention, the arm member and the rubber elastic support are separated from each other in the vibration input direction in a state where no static load from the vibration source is applied, and The main rubber elastic bodies are arranged so as to be in contact with each other in a non-adhered state under the static load.

According to a sixth aspect of the invention, in the third aspect of the invention, the base end portion of the arm member is connected to the first mounting member or the second mounting member via a rubber elastic support member, and the distal end portion is connected. Is extended to one side in a direction orthogonal to the vibration input direction.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the arm members are connected at the central position in the extension direction, and the distal end portions from the connecting portions are on both sides in the direction orthogonal to the vibration input direction. Actuators having different actuation strokes are provided at both ends of the arm member. The operation is switched between the actuators on both sides according to the frequency of vibration input.

Further, the invention of claim 8 is the same as claim 1.
In the invention according to any one of claims 7 to 7, the arm member is composed of a leaf spring.

[0015]

According to the above-mentioned structure, according to the first aspect of the present invention,
Due to the deformation of the main rubber elastic body caused by the vibration input, relative displacement occurs between the first mounting member and the second mounting member, and the vibration of the arm member connected to either of the first and second mounting members or the main rubber elastic body. The mass member at the tip end extending in the direction orthogonal to the input direction is displaced in the vibration input direction, and an inertial force acts in the vibration input direction via the arm member. On this occasion,
The mass member is forcibly vibrated in the vibration input direction in synchronization with the input vibration by the actuator, and the inertial force by the mass member is increased. The increased inertial force causes the mass member to be arranged. The arm member is further increased in accordance with the length of the arm member between the distal end portion of the arm member and the connecting portion to the first mounting member or the like, and acts on any of the first mounting member or the like. Become. Thereby, the vibration transmissibility between the first mounting member and the second mounting member can be further reduced. When the mass member is directly connected to any one of the first mounting members and the like by the simple structure of mounting the mass member via the actuator to the tip end portion of the arm member extending in the direction orthogonal to the vibration input direction, In comparison, a large transmission rate can be reduced with a small amount of driving energy.

According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the arm member is interposed and connected so as to cross the intermediate position in the vibration input direction of the main rubber elastic body. The input vibration is transmitted to the arm member and the mass member via the main rubber elastic body. Therefore, the acceleration acting on the mass member at the time of vibration input is increased by the elastic restoring force of the main rubber elastic body, and the increase of the inertial force by this increases the vibration transmission rate to a greater degree or the driving energy of the actuator. A large reduction can be achieved.

According to the invention of claim 3, in addition to the operation of the invention of claim 1, since the arm member is connected to the first mounting member or the second mounting member, the input vibration causes an input vibration. It is applied directly to the member and a corresponding inertial force from the mass member occurs.

According to the invention described in claim 4, in addition to the operation according to the invention described in claim 2 or 3, the intermediate position between the connecting portion and the tip portion of the arm member is the first attachment member or the second attachment member. Since the mounting member is elastically supported through the rubber elastic support body, when the main rubber elastic body is bent by the vibration input, the arm member is pressed against the rubber elastic support body and the rubber elastic support body is used as a fulcrum. The tip side will be rotated. For this reason, the inertial force based on the mass member is further increased due to the lever action with the rubber elastic support as a fulcrum, whereby the vibration transmissibility is further reduced or the driving energy of the actuator is further reduced. Is planned. In addition, the pressing force from the arm member acts on the rubber elastic support serving as the fulcrum, and the arm member receives the elastic restoring force due to the elastic deformation of the rubber elastic support. The acting inertial force is further enhanced.

According to the fifth aspect of the invention, in addition to the action of the fourth aspect of the invention, the arm member is supported by the rubber elastic support in a state where a static load from the vibration source side is loaded. As a result, the effect of suppressing vibration against a dynamic load can be obtained without being affected by the static load. Moreover, since the support of the arm member and the rubber elastic support is performed in a non-bonded state, the operation setting of the actuator becomes easy.

According to the invention of claim 6, in addition to the operation of the invention of claim 3, the base end portion of the arm member is attached to the first mounting member or the second mounting member via a rubber elastic support. Since they are connected, the input vibration is transmitted through the rubber elastic support, and the acceleration acting on the mass member at the time of vibration input is increased by the elastic restoring force of the rubber elastic support, thereby increasing the inertial force. As a result, it is possible to further reduce the vibration transmissibility or the drive energy of the actuator.

According to the invention of claim 7, in addition to the effect of the invention of claim 1, the central portion in the extension direction of the arm member is a connecting portion, and the tip portion from this connecting portion in the vibration input direction. A mass member is supported via actuators that extend in both directions in the orthogonal direction and have different operation strokes at their front end portions, and the operation of the mass members is switched depending on the frequency of vibration input by the pair of actuators. With this configuration, an efficient vibration suppressing effect can be obtained according to the frequency.

Further, in the invention described in claim 8, in addition to the action of the invention described in any one of claims 1 to 7, the arm member is composed of a leaf spring.
The leaf spring bends in response to the vibration input, and the elastic restoring force further increases the inertial force of the mass member due to the vibration of the actuator and acts on the first attachment member or the like to which the leaf spring is connected.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

<First Embodiment> The first embodiment shows a basic embodiment according to the inventions of claims 1, 2, and 4.

-Part 1- Fig. 1 shows a control type vibration damping mount according to "Part 1" of the first embodiment, where 1 is a first mounting member, 2 is a second mounting member and 3 is a mounting member.
Extends in the vibration input direction (vertical direction in the drawings; also referred to simply as vertical direction in the following embodiments) and extends in the first and second directions.
A main rubber elastic body 4 for connecting the mounting members to each other is a leaf spring as an arm member 4 extending in a direction orthogonal to the vibration input direction (left and right direction in the drawing; in the following embodiments, also simply referred to as left and right direction) A mass member 6 is arranged at a position of the tip end 4a which is the right end of the leaf spring 4, and 6 is the mass member 5.
Is an actuator that forcibly vibrates in the vertical direction.

The first mounting member 1 is a plate piece 1a.
And the bolt 1 protruding upward from the plate piece 1a
b, and when this anti-vibration mount is applied to an engine mount, for example, it is connected to the engine side as a vibration generation source through this bolt 1b. The second mounting member 2 has a base piece 2a extending in a predetermined range in the left-right direction.
And a bolt 2b protruding downward from the base piece 2a
And is connected to the vehicle body side as a vibration receiving portion via the bolt 2b. A rubber elastic support 7 protruding upward by a predetermined height is attached to the right end portion of the base piece 2a by means such as adhesion.

In the main rubber elastic body 3, a base end portion 4b as a connecting portion of the leaf spring 4 crosses an intermediate position in the vertical direction between the first mounting member 1 and the second mounting member 2. The leaf spring 4 and the main rubber elastic body 3 are interposed and connected to each other. The main rubber elastic body 3 and the first and second mounting members 1 and 2 or the leaf spring 4 are connected to each other by vulcanization adhesion by integral vulcanization molding, in addition to adhesion using an adhesive, for example. Are integrated.

The leaf spring 4 has a predetermined width and a predetermined length in the left-right direction, is supported by being connected to the main rubber elastic body 3 at the base end portion 4b, and is also at the base end portion 4b. Also, the upper surface of the rubber elastic support 7 is integrated with the lower surface of the portion in the left-right direction between the front end portion 4a and the front end portion 4a near the base end portion 4b by means such as adhesion, and the rubber elastic support body 7 is also formed. It is supported.

The actuator 6 is composed of, for example, a combination of an electromagnetic coil and a magnet or a laminated body of piezoelectric elements, and the intermittent control of the electric power supplied to the actuator 6 controls the mass member 5 according to the frequency of the input vibration. It is adapted to reciprocate in the vertical direction, that is, to be excited in synchronization with the input vibration. The operating stroke of the reciprocating motion is changed according to the input vibration, for example, in the case of a combination of an electromagnetic coil and a magnet, by adjusting the magnitude of the current to the electromagnetic coil.

In the control of the actuator 6, for example, when a vibration is input from the first mounting member 1 side, the inertia force of the mass member 5 is applied in a phase opposite to the input direction of the vibration, and the second mounting member is controlled. The vibration transmission to the second side may be reduced. Further, when the vibration receiving portion to which the second mounting member 2 is connected is further supported by another elastic supporting means or the like, the control of the actuator 6 is performed in the opposite manner to the inertial force in the same phase as the vibration input direction. The vibration receiving portion as a whole may be made to act on the vibration absorbing member and the noise accompanying the vibration may be reduced.

When "No. 1" of the first embodiment having the above structure is used as an engine mount, the first mounting member is connected to the engine side and the second mounting member 2 is connected to the vehicle body side. When vibration is input in the vertical direction from the first mounting member 1, the input rubber vibrates the main rubber elastic body 3 so that the leaf spring 4 is bent between itself and the rubber elastic support body 7. The rubber elastic support 7 is elastically deformed in response to the force, and the tip end portion 4a vibrates together with the mass member 5 and the actuator 6 in the direction opposite to the input direction of the input vibration. At this time, the actuator 6 is actuated to move the mass member 5 to the vibrating tip 4a.
Is vibrated vertically. Thereby, the main rubber elastic body 3
In addition to the vibration absorption / damping effect by the tip end portion 4a of the leaf spring 4 whose mass is the mass member 5 and the actuator 6 itself.
In addition to the vibration suppressing effect by vibrating, the mass suppressing member 5 is further forced by the actuator 6 to vibrate up and down.

At this time, the inertial force acting on the tip portion 4a in accordance with the vertical vibration of the mass member 5 is increased by the lever action with the rubber elastic support body 7 as a fulcrum, thereby increasing the main rubber elastic body 3.
Acts against. Moreover, the acting inertial force is further increased and acts on the main rubber elastic body 3 by the elastic restoring force based on the bending of the leaf spring 4. In this way, the inertial force acting on the main rubber elastic body 3 for suppressing the transmission of the input vibration is increased based on the arm length of the arm member (leaf spring 4), and the elasticity of the leaf spring 4 is increased. It is possible to obtain an increasing action based on the restoring force, an increasing action based on the lever action with the rubber elastic support 7 as a fulcrum, and the like without using the leaf spring 4 as the arm member. Compared with the case where the actuator 6 is directly mounted via the actuator, the vibration transmissibility can be greatly reduced, and the driving energy of the actuator 6 can be greatly reduced when the same inertial force is applied. be able to.

-Part 2- Fig. 2 shows a control type vibration-proof mount according to "Part 2" of the first embodiment, in which 8 is a motor as an actuator and 9 is a mass member.

The motor 8 is arranged so that its output shaft 8a projects rightward, which is the extension direction of the tip 4a of the leaf spring 4, and the mass member 9 extends radially from the output shaft 8a. It is fixed to the tip of the extended arm 8b.
The mass member 9 is rotated around the output shaft 8a by rotating the motor 8 at a rotation speed synchronized with the vibration direction of the input vibration. In addition, among the other constituent members, those having the same configuration as the above "No. 1" are denoted by the same reference numerals as "No. 1", and detailed description thereof will be omitted (the same applies hereinafter).

[Part 2] of the first embodiment having such a configuration
In this case, since the mass member 9 is rotated around the output shaft 8a by the rotation operation of the motor 8, the tip end portion of the leaf spring 4 vertically supported by the main rubber elastic body 3 and the rubber elastic support body 7. 4a acts as an inertial force in the vertical direction by the centrifugal force generated by the rotation. As a result, it is possible to obtain the same operation and effect as the above "No. 1".
In this case, since the mass member 9 is rotated in the vertical direction by rotating the mass member 9 using the motor 8, an electromagnetic coil and a magnet are used as an actuator for vibrating the mass member 9. Compared with the case of being configured by a combination of the above, etc., an extremely simple configuration can be adopted, and further cost reduction can be achieved.

-Part 3- FIG. 3 shows a control type vibration damping mount according to "Part 3" of the first embodiment, 10 is a second mounting member, and this second mounting member 10 is the first mounting member. The member 1 includes a base piece 10a having substantially the same structure as the plate piece 1a, and a bolt 10b protruding upward from the base piece 10a.
For example, it is connected to the vehicle body side as a vibration receiving portion via 0b. That is, in this "3", the rubber elastic support 7 in "1" is omitted, so that the base piece 2a of "1" is made the base piece 10a of the same shape as that of the first mounting member 1. Is.

In "No. 3" of the first embodiment,
Although the lever action with the rubber elastic support 7 in “Part 1” as a fulcrum cannot be obtained, the left and right sides of the main rubber elastic body 3 of the base end portion 4b of the leaf spring 4 which is a connecting portion to the main rubber elastic body 3 are obtained. A lever action can be obtained between the left end and the right end of the directional width range. Therefore, the inertial force generated by the vibration operation of the mass member 5 by the actuator 6 is increased based on the arm length of the arm member (leaf spring 4) and the elastic restoring force of the plate spring 4 is increased. , And the increasing action and the like based on the above lever action can be obtained.

<Second Embodiment> The second embodiment relates to the inventions described in claims 3, 5, and 6.

-No.1- Fig. 4 shows a control type vibration-proof mount according to "No. 1" of the second embodiment, which is the most basic embodiment of the present invention. In the figure, 11 is a leaf spring which also serves as a first attachment member and an arm member, 12 is a second attachment member, and 13 is a vertically extending portion extending from the base end portion 11b of these leaf springs 11 and the second attachment member 12 Is a main rubber elastic body that connects and to each other.

The leaf spring 11 is connected to, for example, the engine side via a bolt 11c protruding upward from the base end portion 11b, and a tip portion 11a extending from the base end portion 11b to the right in the left-right direction by a predetermined length. A mass member 5 is attached to the actuator via an actuator 6.

The second mounting member 12 has substantially the same structure as the second mounting member 10 in "Part 3" of the first embodiment and has a base piece 12a and a bolt 12b. For example, it is connected to the vehicle body side.

Then, the upper surface of the main rubber elastic body 13 is connected to the base end portion 11b of the leaf spring 11 by means such as adhesion, and similarly the lower surface is connected to the second mounting member 12.

Since the constructions of the mass member 5 and the actuator 6 are the same as those of the first embodiment, the description thereof will be omitted.

In the case of "No. 1" of the second embodiment, the actuator 6 is operated in synchronization with the vibration input from the engine side, and the mass member 5 is forcibly vibrated vertically. Then, the inertial force of the mass member 5 acting on the tip portion 11a of the leaf spring 11 due to the forced vibration is increased corresponding to the length of the left and right arms of the leaf spring 11, and the elasticity of the engine and the main rubber are increased. It acts on the base end portion 11b which is a connecting portion with the body 13.
In addition, at this time, the main rubber elastic body 13 is elastically deformed due to the vibration input, so that the leaf spring 11 is elastically bent and deformed in the vertical direction, and the elastic restoring force of the leaf spring 4 in the vertical direction causes the mass member. The inertial force due to the vibration operation of No. 5 is increased and acts on the base end portion 11b. Therefore, the inertial force of the mass member 5 due to the forced vibration of the actuator 6 can be greatly increased by the leaf spring 11 to further reduce the vibration transmissibility, and the same inertial force can be applied. The drive energy of the actuator 6 can be significantly reduced above.

-Part 2- FIG. 5 shows a control type vibration-proof mount according to "Part 2" of the second embodiment, which is a basic embodiment according to the invention of claim 6. In the figure, 14
Is a first attachment member, and 15 is interposed between the first attachment member 14 and the second attachment member 12 from above and below.
A main rubber elastic body for connecting 2 to each other, 16 is a leaf spring, 17
Is a rubber elastic support.

The first mounting member 14 has a plate piece 14a whose tip portion 14c projects rightward in the left-right direction from the engine-side mounting seat E, and projects upward from a base end portion 14d of the plate piece 14a. It consists of the bolt 14b
The bolt 14b connects to the mounting seat E.
A rubber elastic support 17 extending downward is attached to the lower surface of the tip end portion 14c of the first attachment member 14 by means such as adhesion. The base end of the leaf spring 16 is attached to the lower surface of the rubber elastic support 17. The portion 16b is attached by means such as adhesion. The tip portion 16a of the leaf spring 16 is further positioned to the right by a predetermined length and is positioned.
A mass member 5 is attached to 6a via an actuator 6.

[Part 2] of the second embodiment having such a configuration
In this case, since the base end portion 16b of the leaf spring 16 is connected to the first mounting member 14 via the rubber elastic support body 17, the input vibration is transmitted via the rubber elastic support body 17 and vibrates. The acceleration acting on the mass member 5 itself at the time of input is increased by the elastic restoring force of the rubber elastic support member 17.
Therefore, the inertial force generated by the forced vibration of the mass member 5 by the actuator 6 is increased by both the arm length of the leaf spring 16 and the elastic restoring force, and the inertial force is increased by the acceleration. It is possible to act on the first mounting member 14 in a state in which it is greatly increased by the increasing action of. As a result, it is possible to reduce the vibration transmissibility or the driving energy of the actuator more than in the case of "No. 1".

-Part 3- FIGS. 6 and 7 show a control type vibration-proof mount according to "Part 3" of the second embodiment, and "Part 3" of this second embodiment is the above "Part 2". Is applied to a bush type anti-vibration mount.

In the figure, 14 'is an inner cylindrical body as a first mounting member, and 12' is arranged parallel to the cylinder axis X of the inner cylindrical body 14 'so as to surround the inner cylindrical body 14'. Second
An outer cylinder body as a mounting member, and 15 'these inner cylinder bodies 14'
And a main rubber elastic body interposed between the outer cylindrical body 12 'and the outer cylindrical body 12' so as to exert a vibration damping function against a vibration input acting vertically between them, 16 'is a leaf spring, 17' ′
Is a rubber stopper portion as a rubber elastic support.

The rubber stopper portion 17 'is integrally formed by vulcanization with the main rubber elastic body 15' so as to project downward at a lower position of the inner cylindrical body 14 '. The base end portion 16b 'of the leaf spring 16' is embedded in the ??? Therefore, the leaf spring 1
Since the base end portion 16b 'of 6'is connected to the inner cylindrical body 14' via the rubber stopper portion 17 ', the same structure as the basic structure of "No. 2" can be realized in the bush type vibration proof mount. By doing so, it is possible to obtain the same operation and effect as "No. 2".

-Part 4- FIG. 8 shows a control type vibration-proof mount according to "Part 4" of the second embodiment, and shows a basic embodiment according to the invention of claim 6 together with "Part 2". It is a thing. In the figure, 1
Reference numeral 8 is a first mounting member, and 19 is a second mounting member which is connected to the first mounting member 18 by a main rubber elastic body 15.

The first mounting member 18 is a plate piece 18
It is composed of a and a bolt 18b, and is connected to the engine side mounting seat E by this bolt 18b. Further, the second mounting member 19 has a base piece 19a whose tip portion 19c extends to the right in the left-right direction with respect to the first mounting member 18, and a bolt protruding upward from a base end portion 19d of the base piece 19a. 19b and is connected to the vehicle body side by this bolt 19b. A rubber elastic support 20 extending upward is attached to the upper surface of the tip end portion 19c of the second mounting member 19 by means such as adhesion. The base of the leaf spring 16 is attached to the upper surface of the rubber elastic support 20. The end portion 16b is attached by means such as adhesion. The mass member 5 is attached to the tip portion 16 a of the leaf spring 16 via the actuator 6.

That is, "No. 4" of the second embodiment is
The first mounting member 14 is different only in that the second mounting member 19 is connected to the leaf spring 16 via the rubber elastic support 20.
(See FIG. 5) which is different from “No. 2”.

Therefore, also in the case of "Part 4" of the second embodiment, the same action and effect as "Part 2" can be obtained.

-No. 5- Fig. 9 and Fig. 10 show a control type vibration damping mount according to "No. 5" of the second embodiment, and "No. 5" of this second embodiment is the "No. 4" described above. Is applied to a bush type vibration proof mount.

In the figure, 18 'is an inner cylinder as a first mounting member, and 19' is arranged so as to surround the inner cylinder 18 'in parallel with the cylinder axis X of the inner cylinder 18'. Second
An outer cylinder body as a mounting member, and 15 'these inner cylinder bodies 18'
And a main rubber elastic body exhibiting a vibration damping function between the outer cylinder body 19 'and the outer cylinder body 19', a leaf spring 16 ', and a rubber stopper portion 20' as a rubber elastic support.

The rubber stopper portion 20 'is vulcanized integrally with the main rubber elastic body 15' so as to slightly project upward on the inner peripheral surface of the lower side of the outer cylindrical body 19 '. The base end portion 16b 'of the leaf spring 16' is connected to the rubber stopper portion 20 'in a buried state.
Therefore, since the base end portion 16b 'of the leaf spring 16' is connected to the outer cylindrical body 19 'via the rubber stopper portion 20',
The same structure as the basic structure of "No. 4" can be realized also in the bush type vibration-proof mount, whereby the same operation and effect as that of "No. 4" can be obtained.

-No. 6- Fig. 11 shows a control type vibration-proof mount according to "No. 6" of the second embodiment, which is the most basic embodiment of the present invention. In the figure, reference numeral 21 designates a base end portion 21b thereof.
The leaf spring 22 is connected to the first mounting member 18 at the lower surface of the base mounting member 19a of the second mounting member 19 at the tip portion 19c.
A rubber elastic support member fixedly attached to the member 23 by means such as adhesion
Is interposed between the lower surface of the first mounting member 18 and the upper surface of the base end portion 19d of the second mounting member 19 so that both mounting members 18, 19
The main rubber elastic body is adhered to each by means such as adhesion.

In the leaf spring 21, a mass member 5 is attached via an actuator 6 to a tip portion 11a extending from the base end portion 21b to the right in the left-right direction by a predetermined length.

The rubber elastic support 22 and the main rubber elastic body 2
3 means a state before the first mounting member 18 is connected to the engine side mounting seat E, that is, a state before a static load from the engine side is loaded on the main rubber elastic body 23 (indicated by a solid line in FIG. 11). (Refer to the state shown), while the leaf spring 21 is positioned at a position separated upward from the top of the rubber elastic support 22,
In a state in which the leaf spring 21 is brought into contact with and supported by the top of the rubber elastic support 22 in a non-adhesive state in a state where a static load is applied from the engine side (see a state indicated by a chain line in the figure). The mutual vertical dimension and the spring constant of the main rubber elastic body 23 are set so that

[Part 6] of the second embodiment having such a configuration
In the main rubber elastic body 2
Since all of the parts 3 are taken over and the leaf spring 21 is supported by the rubber elastic support 22 in a non-adhesive state, the vibration suppressing effect by the action of inertia force against the input vibration is affected by the static load. Can be done without. In addition, the inertial force of the mass member 5 forcibly vibrated by the actuator 6 is increased by way of the leaf spring 21, and is increased by the lever action with the rubber elastic support 22 as a fulcrum. The operation control of the actuator 6 can be easily set without considering the influence of the static load.

-Part 7- FIGS. 12 and 13 show a control type vibration-proof mount according to "part 7" of the second embodiment, and "part 7" of the second embodiment.
Is an application of the technique of "No. 6" to a bush type vibration-proof mount.

In the figure, 18 'is an inner cylindrical body as a first mounting member, 19' is an outer cylindrical body as a second mounting member arranged so as to surround the inner cylindrical body 18 ', and 21' is a plate. A spring, 22 'is a rubber elastic support, and 23' extends from the inner cylindrical body 18 'to the outer cylindrical body 19' in a V shape so that both cylindrical bodies 18 ', 1
It is a main rubber elastic body that exhibits a vibration damping function between 9 '.

A mounting bracket 19c 'on the vehicle body side is fixed to the lower portion of the outer cylindrical body 19', and a supporting bracket 19c "protruding rightward is fixed to the side surface of the mounting bracket 19c '. The rubber elastic support 2 is provided on the upper surface of the support bracket 19c ″.
2'is fixed by a bolt 22a 'embedded in this.

On the other hand, the main rubber elastic body 23 'is integrally vulcanized and molded with a rubber stopper portion 23a' projecting downward from the inner cylindrical body 18 '.
The base end 21b 'of the leaf spring 21' is embedded and connected in a '. And this leaf spring 21 '
The main rubber elastic body 23 'is in a position above the top position of the rubber elastic support 22' when the main rubber elastic body 23 'is unloaded (before engine self-loading; see the solid line in FIG. 12). On the other hand, it is set so that the main rubber elastic body 23 'is bent by the load of the engine's own weight so that the leaf spring 21' comes into contact with the top of the rubber elastic support 22 'in a non-bonded state.

Therefore, the same structure as the basic structure of "No. 6" can be realized in the bush type vibration-proof mount, and the same operation and effect as "No. 6" can be obtained.

<Third Embodiment> FIG. 14 shows a control type vibration proof mount according to a third embodiment of the present invention, showing a basic embodiment of the present invention. In the figure, 2
Reference numeral 4 is a leaf spring that also serves as a first attachment member and an arm member, 25 and 26 are mass members, and 27 and 28 are actuators.

The leaf spring 24 has a predetermined length in the left-right direction, and the lower surface of the central portion 24a in the longitudinal direction thereof and the upper surface of the second mounting member 12 are connected to each other via the main rubber elastic body 13. There is. The leaf spring 24 is connected to the engine side mounting seat E via a bolt 24b protruding upward from the central portion 24a, and the second mounting member 12 is connected to the bolt 12 by the bolt 12b.
It is connected to the vehicle body side via b.

The leaf spring 21 has the central portion 24a.
From which the mass member 25 is attached to the right end portion 24c via the actuator 27.
A mass member 26 is attached to the left end portion 24d via an actuator 28.

The actuator 27 is composed of a laminated body of piezoelectric elements, and the actuator 28 is composed of a combination of an electromagnetic coil and a magnet. As a result, both actuators 27 and 28 move the mass members 25 and 26 with different operation strokes. It is possible to force vibration in the vertical direction. That is, the actuator 27 can forcibly vibrate the mass member 25 vertically in a predetermined small stroke range, and the actuator 28 can vertically vibrate the mass member 26 in a predetermined medium stroke to large stroke range. When the input vibration is in a predetermined low frequency range, only the actuator 28 having a medium to large stroke operates so that the input vibration is in a predetermined high frequency range. Actuator with small stroke 2
It is designed so that only 7 is activated.

The actuator 28 will be described in more detail. As illustrated in FIG. 15, the actuator 28 includes an electromagnetic coil 29 and a permanent magnet 30 having a magnetic body 30a on the upper portion thereof. Is fixed inside the box body 31 whose upper surface is open. The box body 31 is fixed to the left end portion 24d of the leaf spring 24 by mounting bolts 31a, 31a, and the moving body 32 is elastic body 33 such as a rubber elastic body, a coil spring, a torsion spring or the like with respect to the box body 31. , 33 (rubber elastic body in the example in the figure) so as to be vertically movable. And
The electromagnetic coil 29 is arranged on the moving body 32, and the moving body 32, on which the mass member 26 is placed, is reciprocated in the vertical direction by intermittent control of energization of the electromagnetic coil 29. The vertical operation stroke can be adjusted depending on the magnitude of the current flowing at that time.

In the case of the third embodiment having such a construction, the switching is controlled in accordance with the frequency of the vibration input to the actuators 27, 28 of the both end portions 24c, 24d of the leaf spring 24. Accordingly, an efficient vibration suppressing effect can be obtained.

<Other Embodiments> The present invention is not limited to the above-described first to third embodiments, and includes various other modifications. That is, although the leaf spring is used as the arm member in the first to third embodiments, the invention is not limited to this, and the arm member may be formed of a rigid plate, for example. In this case, although the elastic restoring force based on the elasticity of the leaf spring cannot be obtained, the length of the arm of the rigid plate and the inertial force based on the lever action can be increased.

The basic technique of "No. 1" of the second embodiment may be applied to a liquid ring type vibration proof mount as shown in FIG. That is, the first mounting member 34 and the bottomed tubular second mounting member 35 are connected to each other by the main rubber elastic body 36,
A liquid chamber 38 is defined between the main rubber elastic body 36 and the rubber diaphragm 37. The inside of this liquid chamber 38 is partitioned
A pressure receiving chamber 38a on the main rubber elastic body 36 side and an equilibrium chamber 38b on the diaphragm side are divided by 9 to form both chambers 38a, 38a.
The b is communicated with each other through the orifice 40 to form a liquid ring type vibration proof mount. The base end portion 41a of the leaf spring 41 is attached to the first attachment member 34 of such a vibration-proof mount, the tip end portion 41b is extended to one side in the left-right direction by a predetermined length, and the mass member 5 is attached to the tip end portion 41b by the actuator 6a. Install via.

Further, in "Part 6" of the second embodiment,
The leaf spring 21 may be connected to the main rubber elastic body 23 instead of the first mounting member 18. That is, the leaf spring 21 may be interposed across the intermediate position in the vertical direction of the main rubber elastic body 23, and the base end portion 21 b of the leaf spring 21 may be connected to the main rubber elastic body 23.

Further, in the third embodiment, the leaf spring 24
The object of connection may be changed to the main rubber elastic body 13. That is, the central portion 24a of the leaf spring 24 may be interposed so as to cross the vertical intermediate position of the main rubber elastic body 13, and the central portion 24a of the leaf spring may be connected to the main rubber elastic body 13. . The mass member 26 may be omitted in the left end portion 24d of the leaf spring 24, and the mass member may be configured by the mass of the moving body 32 of the actuator 28.

[0077]

As described above, according to the control type vibration proof mount according to the invention of claim 1, the arm member is connected to either the first or second mounting member or the main rubber elastic body, and The arm member may be extended in a direction orthogonal to the vibration input direction, the mass member may be attached to the tip of the arm member via an actuator, and the actuator may be operated in synchronization with the input vibration to forcibly excite the mass member in the vibration input direction. Therefore, the inertial force of the mass member generated by the forced vibration can be increased corresponding to the length of the arm of the arm member, and the increased inertial force can be increased by connecting the first arm member to the first arm member. It can act as a vibration suppressing force on the mounting member and the like. Therefore, as compared with the case where the mass member is directly connected to any one of the above-mentioned first mounting members or the like via the actuator, a large transmission rate can be reduced with less driving energy. In addition, the mass member
This can be obtained by a simple structure in which the arm member is attached to the tip end portion of the arm member that is connected to any one of the attachment members and extends in the direction orthogonal to the vibration input direction via the actuator.

According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the arm member is connected by interposing it across the intermediate position of the main rubber elastic body in the vibration input direction. Therefore, the input vibration can be transmitted to the arm member and the mass member via the main rubber elastic body, and the acceleration acting on the mass member at the time of vibration input is increased by the elastic restoring force of the main rubber elastic body. Can be made. As a result, it is possible to further reduce the vibration transmissibility or the driving energy of the actuator due to the increase of the inertial force due to the increase of the acceleration.

According to the third aspect of the invention, in addition to the effect of the first aspect of the invention, since the arm member is connected to the first mounting member or the second mounting member, the input vibration is transmitted to the arm member. And applied directly to the mass member and correspondingly generate an inertial force by the mass member.

According to the invention of claim 4, in addition to the effect of the invention of claim 2 or claim 3, the intermediate position between the connecting portion and the tip end portion of the arm member is set to the first mounting member. Alternatively, since the second mounting member is elastically supported by the rubber elastic support body, the inertial force generated by the forced vibration of the mass member is further increased by the lever action with the rubber elastic support body as a fulcrum. Accordingly, it is possible to further reduce the vibration transmissibility or the driving energy of the actuator. In addition, since the arm member receives the elastic restoring force from the rubber elastic support body serving as the fulcrum, the inertial force acting on the main rubber elastic body can be further increased.

According to the invention of claim 5, in addition to the effect of the invention of claim 4, the arm member is not attached to the rubber elastic support while the static load from the vibration source side is loaded. Since it is abutted and supported in an adhesive state,
It is possible to obtain a vibration suppressing effect against a dynamic load without being affected by the static load and to easily set the operation of the actuator.

According to the invention of claim 6, in addition to the effect of the invention of claim 3, the arm member is connected to the first mounting member or the second mounting member via a rubber elastic support. Since the input vibration is transmitted through the rubber elastic support, the acceleration acting on the mass member at the time of inputting the vibration can be increased by the elastic restoring force of the rubber elastic support, thereby increasing the inertial force. As a result, it is possible to further reduce the vibration transmissibility or the drive energy of the actuator.

According to the invention described in claim 7, in addition to the effect of the invention described in claim 1, the central portion in the extension direction of the arm member serves as a connecting portion, and the tip portion from this connecting portion acts in the vibration input direction. The mass members are supported by actuators that extend to both sides in the direction orthogonal to the two, and the tip ends of the two sides have actuator strokes different from each other, so that the pair of actuators are switched to each other in accordance with the vibration frequency input. With this configuration, an efficient vibration suppressing effect can be obtained according to the frequency.

Further, according to the invention of claim 8, in addition to the effect of the invention of any one of claims 1 to 7, vibration is caused because the arm member is formed of a leaf spring. The elastic restoring force due to the bending of the leaf spring when receiving an input can further increase the inertial force of the mass member accompanying the vibration of the actuator, further reducing the vibration transmissibility or reducing the driving energy of the actuator. Further reduction can be achieved.

[Brief description of drawings]

FIG. 1 is a front view showing “No. 1” of a first embodiment of the present invention.

FIG. 2 is a front view showing “No. 2” of the first embodiment.

FIG. 3 is a front view showing “No. 3” of the first embodiment.

FIG. 4 is a sectional explanatory view showing “No. 1” of the second embodiment.

FIG. 5 is an explanatory sectional view showing “No. 2” of the second embodiment.

FIG. 6 is an explanatory sectional view showing “No. 3” of the second embodiment.

7 is a cross-sectional view taken along the line AA of FIG.

FIG. 8 is a cross sectional view showing “No. 4” of the second embodiment.

FIG. 9 is a cross sectional view showing “No. 5” of the second embodiment.

10 is a sectional view taken along line BB in FIG.

FIG. 11 is an explanatory sectional view showing “No. 6” of the second embodiment.

FIG. 12 is a cross sectional view showing “No. 7” of the second embodiment.

13 is a cross-sectional view taken along the line CC of FIG.

FIG. 14 is a cross sectional view showing a third embodiment.

15 is an enlarged cross-sectional explanatory view of the actuator on the left side of FIG.

FIG. 16 is a cross-sectional explanatory view showing another aspect.

[Explanation of symbols]

1, 14, 18, 34
First mounting member 2, 10, 12, 19, 35
Second mounting member 3,13,15,15 ', 23,23', 36
Main rubber elastic body 4,16,16 ', 21,21', 41
Leaf springs (arm members) 4a, 11a, 16a, 16a ', 21a, 41b
Tip part of leaf spring 4b, 11b, 16b, 16b ', 21b, 41a
Base end of leaf spring 5,9,25,26
Mass member 6,27,28
Actuator 7, 17, 20, 22, 22 '
Rubber elastic support 8 Motor (actuator) 11, 24 Leaf spring (first mounting member) 12 ', 19' Outer cylinder (second mounting member) 14 ', 18' Inner cylinder (first mounting member) 17 ' , 20 'Rubber stopper (rubber elastic support) 24a Central part of leaf spring 24c Right end of leaf spring 24d Left end of leaf spring

Claims (8)

[Claims] 1. A first mounting member connected to one side of a vibration source and a vibration receiving portion, and a first mounting member and a vibration mounting source and a vibration receiving portion which are spaced apart from each other in a vibration input direction. A second mounting member connected to the other side and these first mounting members
And a main rubber elastic body for vibration damping interposed between the second mounting member and the second mounting member, wherein any one of the first mounting member, the second mounting member, and the main rubber elastic body is provided. An arm member that is connected to the arm member and extends from the connecting portion in a direction orthogonal to the vibration input direction, a mass member disposed on the distal end side of the arm member, and an interposing member between the mass member and the arm member. An anti-vibration mount which is provided with an actuator for vibrating the mass member in a vibration input direction in synchronization with input vibration. 2. The control type vibration damping mount according to claim 1, wherein the arm member is interposed and coupled so as to cross an intermediate position in the vibration input direction of the main rubber elastic body. 3. The control type vibration damping mount according to claim 1, wherein the arm member is connected to the first mounting member or the second mounting member. 4. The arm member according to claim 2 or 3, wherein the arm member has a first position at an intermediate position between the connecting portion and the tip portion.
A control type vibration-damping mount, which is elastically supported on a mounting member or a second mounting member via a rubber elastic support. 5. The arm member and the rubber elastic support according to claim 4, wherein the arm member and the rubber elastic support are separated from each other in a vibration input direction without a static load from a vibration source being applied and the static load is applied. A control type vibration-damping mount, which is arranged so as to come into contact with each other in a non-adhesive state by bending of a main rubber elastic body. 6. The arm member according to claim 3, wherein a base end portion of the arm member is connected to the first mounting member or the second mounting member via a rubber elastic support member, and a front end portion of the arm member is in a direction orthogonal to a vibration input direction. Controlled anti-vibration mount that extends to one side. 7. The arm member according to claim 1, wherein the arm members are connected to each other at a central position in the extension direction, and the distal end portions are arranged to extend from the connection portion to both sides in a direction orthogonal to the vibration input direction. Actuators having different actuation strokes are provided at both end portions of the actuators, and the actuators on the opposite sides are configured to be actuated and switched according to the frequency of vibration input. Controlled anti-vibration mount. 8. Any one of claims 1 to 7
In the control type antivibration mount, the arm member is composed of a leaf spring.