JP3409568B2 - Anti-vibration support device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supporting a vibrating body such as an engine of a vehicle on a support body such as a vehicle body while damping the vibration. The present invention relates to a vibration isolation support device that defines a chamber and actively changes the volume of the fluid chamber to reduce the vibration transmissibility.

[0002]

2. Description of the Related Art An example of such an anti-vibration support device is disclosed in Japanese Patent Application Laid-Open No. 7-269645. This anti-vibration support device relates to, for example, a device that supports a vehicle engine on a vehicle body, and is a fluid chamber (working chamber) formed between a support elastic body (expansion spring) and a storage body (outer shell). And a variable volume sub-fluid chamber which communicates with the fluid chamber through an orifice (buffer hole) and is defined by a diaphragm (bellow), and a direction which is disposed in the fluid chamber and changes the volume of the fluid chamber. A movable plate (vibration plate) that is actively displaced in the direction, an actuator (magnet body) that displaces the movable plate in the volume change direction of the fluid chamber, and to maintain the movable plate at a predetermined position with respect to the actuator And a ring-shaped plate spring (plate-shaped spring member) interposed between the movable plate and the storage body and elastically supporting the movable plate on the storage body. Of course, although not disclosed in this publication, the vibration transmitted from the vibrating body to the support body is reduced by driving the actuator to mutate the movable plate and consequently changing the volume of the fluid chamber. Therefore, the control means for supplying the control signal to the actuator is essential. By the way, in this anti-vibration support device, a rubber seal member is disposed between the movable plate and the housing so that the actuator is separated from the fluid chamber by the movable plate including the plate spring. .
However, this seal member may be arranged between the movable plate and the actuator. The outer peripheral edge of the ring-shaped leaf spring is tightly fitted and fixed in the recess formed in the housing, and the inner peripheral edge is in contact with the movable plate.

Further, according to this vibration isolating support device, for a vibration input of a comparatively low frequency capable of moving the fluid between the fluid chamber and the sub-fluid chamber through the orifice, for example, an engine shake, the orifice concerned. Due to the fluid resonance in the inside, it becomes a vibration damping support device with a high dynamic spring constant and a high damping force, while when a vibration of a relatively high frequency that makes movement of the fluid through the orifice impossible is input, By displacing the movable plate so as to cancel the pressure fluctuation of the fluid due to the vibration input, the volume in the fluid chamber changes and the vibration damping support device has a low dynamic spring constant. That is, according to the above-described conventional vibration isolating support device, it is possible to prevent vibrations from both low frequency vibration input requiring high dynamic spring constant and high damping and high frequency vibration input requiring low dynamic spring constant. A vibration effect is obtained.

[0004]

By the way, in order to fix the outer peripheral edge portion of the leaf spring formed in the ring shape to the housing as described above, for example, both sides of the leaf spring (the conventional vibration-proof support) are used. In the device, it is necessary that the side surface of the fluid chamber and the side surface of the actuator) are firmly fixed to each other by interference fitting or caulking. However, since this leaf spring is deformed along with the displacement of the movable plate, if the outer peripheral edge portion of the leaf spring thus formed in a ring shape is firmly sandwiched between the storage bodies, Stress concentration occurs at the sandwiched end portion, that is, the fixed inner end portion of the leaf spring formed in a ring shape, and the local stress generated at the relevant portion tends to increase. Moreover, since this stress is constantly repeated during the operation of the actuator, the leaf spring may be fatigued. Therefore, when a large variation is required for the movable plate, the stress generated in the plate spring also becomes large, and there is a problem that an expensive plate spring must be used in consideration of durability performance as a vibration isolation support device. Occurs.

The present invention has been developed in view of these problems, and it is possible to improve the durability by reducing the stress generated in the plate-shaped spring member without increasing the size of the container. The purpose is to provide a device.

[0006]

In order to solve the above problems, a vibration isolating support device according to a first aspect of the present invention comprises a vibrating body and a supporting elastic body interposed between the supporting bodies, and the supporting elastic body. A storage body continuously connected to the support elastic body, a fluid chamber defined in the support elastic body and having a fluid enclosed therein, a movable plate for changing the volume of the fluid chamber, and a fluid chamber disposed in the storage body. An actuator that applies a displacement force to the movable plate, control means that supplies a control signal to the actuator so as to reduce the vibration transmitted from the vibrating body to the support, and the movable plate at a predetermined position with respect to the actuator. In order to maintain the temperature of the movable plate and the storage body, a spring member for elastically supporting the movable plate to the storage body and a seal member for sealing the fluid in the fluid chamber are provided. In swing support device The movable plate-side end and each of the support housing side end portion of the spring member, Ri movable free end supporting der relative to the movable plate and the container, housing side end portion of the spring member
The outer shape corresponding to is circular or almost circular, and
A hole is provided to form an inner shape corresponding to the end of the movable plate.
The slit from the inner circumference side or the outer circumference side of the spring member.
Is formed, and a plurality of these spring members are stacked and arranged.
The slits of the spring members stacked in the fluid chamber are
Arrange each spring member so that they do not overlap
A liquid-tight elastic film is attached so as to cover the side surface of the supporting elastic body.
The fluid chamber is divided into a supporting elastic body side and a movable plate side.
The movable plate between the two fluid chambers.
It is characterized in that they are communicated with each other by a broken communication passage .

According to a second aspect of the present invention, there is provided an anti-vibration supporting device, wherein the vibrating body side connecting member is connected to the vibrating body, the supporting body side connecting member is connected to the supporting body, and the vibrating body side connecting member or A support elastic body connected to any one of the support side connecting members, a storage body connected between the support elastic body and the other of the vibrating body side connecting member or the support side connecting member, and the support elastic body. A fluid chamber defined in the body and having a fluid enclosed therein; a magnetizable movable plate that forms a part of a partition wall of the fluid chamber and is displaceable in a direction that changes the volume of the fluid chamber; An actuator that is disposed in the housing and that generates a magnetic force to apply a displacement force to the movable plate, and control means that supplies a control signal to the actuator so as to reduce the vibration transmitted from the vibrating body to the support body. And the A seal member disposed between the movable plate and the housing or actuator to isolate the user from the fluid chamber, a movable plate side receiving portion formed on the movable plate, and formed on the housing. And a receiving member side receiving portion, and the movable plate elastically supporting the moving plate on the receiving member in order to maintain the movable plate at a predetermined position with respect to the actuator, and the movable plate side end portion is supported by the moving plate side receiving portion. A plate-shaped spring member whose end on the container side is supported by the receiving part on the container side, wherein the plate-shaped spring member is movably supported by at least one receiving part, and a container for the spring member.
The outer shape corresponding to the side edge is circular or approximately circular, and
A hole is provided in the central part so that the inner shape corresponding to the movable plate side end is
The spring member from the inner circumference side or the outer circumference side.
And the spring members are stacked on top of each other
However, the slip of the spring members stacked in the fluid chamber
Arrange each spring member so that the two do not overlap each other,
Liquid-tight elasticity to cover the sides of the supporting elastic body
A membrane is attached to support the elastic body side and the movable plate side in the fluid chamber.
And the movable between the two fluid chambers
It is characterized in that they are communicated with each other by a communication passage provided in the plate .

According to a third aspect of the present invention, there is provided an anti-vibration support device including a vibrating body and a supporting elastic body interposed between the vibrating bodies.
A storage body connected to the support elastic body, and the support bullet.
A fluid chamber defined in the body and having a fluid sealed inside
A movable plate that changes the volume of the fluid chamber, and the storage
An actuator that is arranged inside the body and applies a displacement force to the movable plate.
And the vibration transmitted from the vibrator to the support
Supply a control signal to the actuator to reduce
Control means and the movable plate to the actuator
The movable plate and the storage body in order to maintain the movable plate at a predetermined position.
And elastically support the movable plate in the storage body.
Spring member and a seal for sealing the fluid in the fluid chamber
A vibration-damping support device including a member,
The movable plate side end and the storage body side end are respectively supported by the movable plate.
And a free end support movable with respect to the storage body,
The outer shape corresponding to the end of the member on the housing side is circular or substantially circular.
There is a hole in the center of the movable plate side edge.
To form a corresponding inner shape, from the inner peripheral side of the spring member or outside
Slits are formed from the peripheral side and overlapped with the spring member.
The cover member in the shape of
Cover the lit and rotate freely in the direction of deformation of the spring member
To form a cover, and the cover causes the spring member to
The cover member so as to cover the slit of the spring member.
Lay it on the supporting elastic body side and attach the side surface of the supporting elastic body.
Apply a liquid-tight elastic film to cover them and apply
By placing it inside the body chamber, it supports elasticity inside the fluid chamber.
Both fluids are divided into body side and movable plate side.
The chambers are connected to each other by a communication passage provided on the movable plate.
It is characterized by communication .

According to a fourth aspect of the present invention, there is provided a vibration isolating support device including a vibrating body side connecting member connected to the vibrating body, and a supporting member.
The supporting member side connecting member connected to the holding member and the vibrating member side connecting member.
It is connected to either the connecting member or the support-side connecting member.
Support elastic body and the vibrating body side connection member or the support body side connection
Connected between the other of the members and the supporting elastic body
A storage body and a fluid defined inside the support elastic body.
And a part of the partition wall of the fluid chamber
And can be displaced in a direction that changes the volume of the fluid chamber
A magnetizable movable plate and a magnetic force that is disposed inside the housing.
Actuator for generating a displacement force to the movable plate
And the vibration transmitted from the vibrator to the support is reduced.
To supply a control signal to the actuator so that
And means for isolating the actuator from the fluid chamber
Between the movable plate and the housing or actuator for
The seal member provided and the movable member formed on the movable plate
Plate-side receiving portion and storage-body-side receiving portion formed in the storage body
The movable plate at a predetermined position with respect to the actuator.
The movable plate is elastically supported on the storage body in order to maintain
Moreover, the movable plate side end is supported by the movable plate side receiving portion,
A plate-shaped bar whose end on the container side is supported by the receiving part on the container side.
And at least one of the plate-shaped spring members
Is movably supported by the receiving part of the
The outer shape corresponding to the side edge is circular or approximately circular, and
A hole is provided in the central part so that the inner shape corresponding to the movable plate side end is
The spring member from the inner circumference side or the outer circumference side.
Of a shape that forms a
Cover the cover member with at least the slit of the spring member.
In addition, a cover portion that freely rotates in the deformation direction of the spring member is provided.
The slit of the spring member is formed by this cover part.
To cover the cover member, the side of the support elastic body of the spring member
Liquid on the support elastic body to cover the side surface of the support elastic body.
Stick a tight elastic membrane and place them in the fluid chamber
The fluid chamber inside the fluid chamber and the movable plate.
The side between the two fluid chambers is divided into
Communicating with each other by a communication passage provided in the movable plate
It is characterized by .

[0010]

DETAILED DESCRIPTION OF THE INVENTION A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an application of the anti-vibration support device according to the present invention to a so-called active engine mount (hereinafter, simply referred to as an engine mount) that actively reduces vibration transmitted from an engine side as a vibrating body to a vehicle body side member. It was done.

An engine mount designated by the reference numeral 20 in FIG. 1 is provided on the rear side of the vehicle body of an engine 22 mounted horizontally, and has an upper portion fixed to an engine side bracket 24 and a lower portion fixed to a vehicle body 26 as a support body. Is attached to the member 28. 2 to 6 show the engine mount 20.
The engine mount 20 includes a connecting member (vibrating body-side connecting member 30) in which two engine-side mounting bolts 30a spaced apart from each other in parallel are fixed upward. A hollow cylindrical portion 30b having an inverted trapezoidal cross section is fixed to the lower portion of the connecting member 30. A support elastic body 32 is fixed to the lower surface side of the connecting member 30 by vulcanization adhesion so as to cover the periphery of the connecting member 30 and the hollow cylindrical portion 30b.

The support elastic body 32 is an elastic body in the shape of a substantially conical cylinder having a wall thickness that gradually inclines downward from the central portion toward the outer peripheral portion. Thirty
It is joined by vulcanization adhesion to the inner peripheral surface of the inner cylinder (first cylindrical member) 34 which is coaxial with b and faces the vibrating body supporting direction (in this case, the vertical direction). As shown in FIGS. 2 to 4, the inner cylinder 34 is gradually reduced in diameter downward from the upper end cylinder portion 34a to form an inclined portion 34b. The inclined portion 34b is formed downward from the lower end portion to the upper end. A small-diameter tubular portion 34c having a smaller diameter than the tubular portion 34a is formed. Then, the small-diameter cylindrical portion 34
An annular portion 34d is formed radially outward from the lower end portion of c, and a lower end tubular portion 34e having the same outer peripheral diameter as the upper end tubular portion 34a is formed downward from the outer peripheral end portion of the annular portion 34d. . The small-diameter cylindrical portion 34c is provided with a first opening hole 34f and a second opening hole 34g at mutually symmetrical positions with respect to the axis.

A thin film elastic body 32a continuous from the lower side of the support elastic body 32 is joined to the inner peripheral surfaces of the inclined portion 34b of the inner cylinder 34 and the small diameter cylindrical portion 34c. Further, it extends to the annular portion 34d side and the lower end tubular portion 34e side of the inner cylinder 34, and is coupled to the inner peripheral surfaces of the annular portion 34d and the lower end tubular portion 34e. Here, the lower end portion of the thin film elastic body 32a has a thickened shape.

The thin film elastic body 32a has the first opening 3
4f is closed to form the first diaphragm 32c. Further, the second opening hole 34g is opened without being blocked by the thin film elastic body 32a. Further, a hollow portion 32b having a mountain-shaped cross section that forms a fluid chamber is formed inside the support elastic body 32, and the first orifice component member 36 is formed inside the support elastic body 32 so as to be located below the hollow portion 32b. It is fitted in a cylinder 34 (strictly, inside the thin film elastic body 32a).

The first orifice constituting member 36 is provided with a minimum diameter cylindrical portion 36a having a diameter smaller than that of the small diameter cylindrical portion 34c of the inner cylinder 34, and the upper and lower ends of the minimum diameter cylindrical portion 36a are radially outward. It is a tubular member on which annular portions 36b and 36c are formed. The outer peripheral diameter of the upper annular portion 36b is the inner cylinder 3
It is formed to have a diameter slightly smaller than that of the small-diameter cylindrical portion 34c of No. 4. The lower annular portion 36c is formed to have a smaller diameter than the lower end tubular portion 34e of the inner cylinder 34, and a tubular end portion 36c ₁ is formed downward from the outer peripheral end portion thereof. Further, a third opening hole 36d is formed in the minimum diameter cylindrical portion 36a at a position facing the second opening hole 34g formed in the inner cylinder 34.

Here, the lower end portion of the thin film elastic body 32a having the increased thickness as described above has the lower end tubular portion 34e of the inner cylinder 34.
By being sandwiched between the first orifice component member 36 and the tubular end portion 36c ₁ , the first orifice component member 36 is slightly compressed downward in the radial direction while being compressed. on the other hand,
An outer cylinder 38 as a second cylindrical member is fitted onto the inner cylinder 34, and between the inner cylinder 34 and the outer cylinder 38,
An annular space is defined in the circumferential direction by surrounding the recess formed by the outer surface of the inclined portion 34b, the small-diameter cylindrical portion 34c, and the annular portion 34d of the inner cylinder 34 with the inner peripheral surface of the outer cylinder 38. The second orifice component 40 and the second diaphragm 43 are arranged in this annular space.

That is, the outer cylinder 38 has a cylindrical member whose inner diameter is the same as or slightly larger than the outer diameter of the inner cylinder 34 and whose axial length is the same as that of the inner cylinder 34. A thin liquid-tight sealing material 38a made of an elastic body is joined to the inner peripheral surface of the sealing material 38a. A substantially rectangular opening 38b, which is long in the circumferential direction, is formed at a substantially central portion in the height direction of the outer cylinder 38 so as to face a substantially one-third portion of the concave portion. The second diaphragm 43 is attached in 38b. The second diaphragm 43 is a rubber-like thin film elastic body, and as shown in FIG. 5, for example, is coupled to the entire circumference of the opening edge of the opening 38b to close the opening 38b, and Part 3
It is arranged in a state of bulging from 8b toward approximately 1/3 of the recess.

The second orifice constituting member 40
Are disposed in the remaining annular space (an annular space corresponding to approximately ⅔ of the recess) that has become a small space due to the disposition of the second diaphragm 43, and is clearly shown in FIGS. 5 and 6. As described above, the partition wall member 40a and the passage forming member 40b are made of a hard elastic body. Of these, the partition wall member 40a closes the annular space in the annular space adjacent to the one end portion 43a in the longitudinal direction of the second diaphragm 43 which is long in the circumferential direction according to the shape of the opening 38b. It is fitted between the inner cylinder 34 and the outer cylinder 38, and the partition wall member 40a blocks the flow of fluid from the annular space side to the second diaphragm 43 side.

The passage forming member 40b is separated from the partition wall member 40a by a predetermined distance (hereinafter, the end portion corresponding to this position will be referred to as a partition wall member side end portion) in the longitudinal direction of the second diaphragm. Is continuously formed in the annular space up to a position (hereinafter, an end corresponding to this position is referred to as a diaphragm side end) close to the other end 43c of the. Then, a second passage 40b ₂ that communicates from the partition member member side end portion to the diaphragm side end portion along the circumferential direction above the passage forming member 40b,
A first passage 40b ₁ that communicates from the partition member side end portion to the second opening hole 34g of the inner cylinder 34 is also formed below the same along the circumferential direction. The second
The length of the passage 40b ₂ is about 2 times the length of the first passage 40b _1.
It is set to double.

Then, the upper side of the actuator case 42 is externally fitted to the outer cylinder 38 containing these constituent members. The actuator case 42 has an upper end crimped portion 42a having a circular opening with a diameter smaller than the outer peripheral diameter of the inner cylinder 34 formed at the upper end portion, and the shape of the case body continuous with the upper end crimped portion 42a is This is a member having a cylindrical shape whose peripheral diameter is the same as the outer peripheral diameter of the outer cylinder 38 and continues to the lower end opening (the lower end opening is shown by the broken line in FIG. 2). Then, the support elastic body 32 and the inner cylinder 3
The outer cylinder 48 integrated with 4 is fitted into the inside of the lower end opening of the actuator case 42 so that the support elastic body 32 is located above, and the outer cylinder 38 and the inner cylinder are formed on the lower surface of the upper end caulking portion 42a. The upper ends of the cylinders 34 come into contact with each other, so that they are arranged in the upper portion of the actuator case 42. Here, as shown in FIGS. 2 and 5, the air chamber 43b is defined in a portion surrounded by the inner peripheral surface of the actuator case 42 and the second diaphragm 43. An air hole 42c is formed at a position facing the air chamber 43b, and the air chamber 43b communicates with the atmosphere by opening the air hole 42c.

On the other hand, an actuator sub case 41 is fitted inside the lower space of the actuator case 42 formed as described above. The actuator sub-case 41 forms a part of the housing according to the present invention, and its appearance is a bottomed cylindrical shape having an outer diameter that fits tightly into the lower space of the actuator case 42, and its uppermost end. The portion is folded back inwardly to form a spring member support portion 41a that supports the upper surface of a spring member described later (in this embodiment, also plays a role of supporting the lower end portion of the thin film elastic body 32a).

And, this actuator sub case 4
An electromagnetic actuator 52 is disposed below the unit 1.
The electromagnetic actuator 52 has a structure similar to that of an existing electromagnetic actuator, and as a whole, the cylindrical yoke 5 that is tightly fitted in the actuator sub case 41.
2a, an exciting coil 52b housed in a groove formed in a ring shape from the upper surface of the yoke 52a, and a permanent magnet housed in a recess formed inside the groove housing the exciting coil 52b. It is composed of a magnet 52c. Incidentally, a part of the side surface of the yoke 52a (the left end portion in FIG. 2).
Is formed with a groove-shaped communication passage 52d continuous from the upper surface of the yoke 52a, and a third diaphragm 51 is attached to an opening on the side surface of the actuator sub case 41 facing the communication passage 52d. The side surface of the actuator case 42 facing the third diaphragm 51 has an opening 42d that communicates with the outside. The operation of the third diaphragm 51 will be described later in detail.

A gap holding ring 50 having a predetermined height is placed on the outer peripheral surface of the upper surface of the yoke 52a of the electromagnetic actuator 52. Inside the gap holding ring 50, a disc-shaped magnetic material is provided via a rubber seal member 49. The outer peripheral surface of the movable plate 46 formed of a body is operatively supported. Of these, the gap retaining ring 50 has an axial length from the lower surface of the spring member 48 described later so that a predetermined gap is provided between the lower surface of the movable plate 46 and the upper surface of the electromagnetic actuator 52. The annular member is set to a value obtained by adding the dimension of the gap to the axial length to the lower surface of the movable plate 46.
The rubber seal member 49 maintains the movable plate 46 and the electromagnetic actuator 52 in a liquid-tight state, and the movable plate 46 moves at least in the acting direction of the attraction force of the electromagnetic actuator 52, that is, in the vertical direction in FIG. Possibly supported by the gap retaining ring 50.

Further, the gap retaining ring 50
A spacer 47 having a predetermined thickness is placed on the upper surface of the plate, and a plate-shaped spring member 48 having a shape described in detail later is placed on the spacer 47, and then the uppermost end of the actuator sub case 41 is placed inside. Then, the spring member support portion 41a is formed by folding back.
In the present embodiment, the spring member 48 has a complicated shape as will be described in detail later, but here, considering that it is a disk-shaped thin plate having an inner hole, that is, a ring-shaped thin plate, An inner peripheral end portion of the movable plate 46 is loosely fitted in a groove portion 46b formed between the upper protruding portion 46a of the movable plate 46 and the upper surface of the disc-shaped portion with a predetermined gap, and the outer peripheral end portion thereof is also the same. Is also loosely fitted with a predetermined gap provided between the spacer 47 and the spring member support portion 41a. That is, considering that, for example, as shown in FIG. 7, the actuator sub case 41, the gap retaining ring 50, the spacer 47, and the spring member support portion 41a constitute a part of the housing,
The outer peripheral end portion 48o of the ring-shaped spring member 48 is supported by the free end of the housing-side receiving portion 53 of the housing formed between the upper surface of the spacer 47 and the lower surface of the spring member support portion 41a, and the movable plate. The inner peripheral end 48i is supported by the free end of the movable plate side receiving portion including the groove portion 46b of 46. The spring member 48 is a single sheet as shown in the figure.
Not only do you stack multiple spring members as described later
Matching, covering with covering material, coating with elastic film
However, the details will be described later.

As described above, the spring member 48 and the movable plate 4 are
6. After the electromagnetic actuator 52 and the like are housed inside the actuator sub case 41, the actuator sub case 41 is inserted into the lower space of the actuator case 42 below the outer cylinder 38, and the load is applied below the actuator sub case 41. The sensor 54 is provided, and two vehicle body side mounting bolts 56a are provided below the sensor 54 and are separated from each other.
After arranging the vehicle-body-side connecting member (support-side connecting member) 56 of a substantially disc-shaped device in which is fixed downward, the lower end portion of the actuator case 42 is deformed inward in the radial direction,
As shown by the solid line in FIG. 2, the lower end caulking portion 42d is formed.

In this way, the actuator case 42
When the lower end caulking portion 42d is formed on the lower end portion of the vehicle body, the peripheral edge portion of the vehicle body side connecting member 56 is fixed in a state of being covered from the outside. At this time, the actuator sub case 41 is attached to the outer cylinder 38.
Since it is pushed to the side, the lower end cylinder portion 34e of the inner cylinder 34
And lower ends of the first orifice component 36 of the tubular end portion 36c ₁ elastic film 32a extending from sandwiched is the resilient support member 32 is between the spring member of the actuator sub-case 41 The support elastic body 3 is pressed by the upper surface of the support portion 41a in an upward direction to be in a compressed state.
It is possible to seal the fluid in the main fluid chamber 66 configured by the two hollow portions 32b and the movable plate 46 from leaking to the outside of the inner cylinder 34 and the outside of the actuator sub case 41. Further, as will be described in detail later, from the inside of the main fluid chamber 66 to the first passage 40b ₁ and the second passage 40b ₂ of the second orifice constituting member 40 through the third opening hole 36d and the second opening hole 34g. The leakage of the spread fluid to the outside of the outer cylinder 38 is sealed by the liquid-tight sealing material 38 a sandwiched between the outer cylinder 38 and the inner cylinder 34. Incidentally, in the present embodiment, the electromagnetic actuator 52 and the movable plate 46 are
Are stored in the actuator sub case 41.
This is also for the purpose of improving the efficiency of the assembling work by the so-called sub-assembly process and further improving the sealing property of each component that is reluctant to get wet with liquid. To this end, a thin film sealing member is attached to the inner peripheral surface of the actuator sub case 41 by coating or the like, and in particular, seals the fluid leakage from the outer peripheral surface of the gap retaining ring 50 to the electromagnetic actuator 52 side. ing.

Further, a rebound stopper 60 is fixed to the upper part of the actuator case 42. This rebound stopper 60, as shown in FIGS.
A stopper portion 60a extending between the two engine-side mounting bolts 30a extending upward from the connecting member 30 in a direction orthogonal to a line connecting the bolts, and gradually extending from both ends of the stopper portion 60a. And a pair of stopper legs 6 that are connected to the outer circumference of the actuator case 42.
0b and the member which provided. Then, when the support elastic body 32 is excessively elastically deformed upward due to the rebound operation of the engine mount 20, the support elastic pair 32 is excessively deformed by the contact of the connecting member 30 with the lower surface of the stopper portion 60a. It is supposed to be prevented.

Next, the engine mount 20 of the present embodiment.
The vibration input damping action of will be briefly described. In the engine mount 20 of the present embodiment, with respect to the main fluid chamber 66 constituted by the hollow portion 32b of the support elastic body 32, the inner peripheral surface of the first orifice constituting member 36 and the upper surface of the movable plate 46, The outer peripheral side of the 1-orifice component 36 is the first
The second orifice forming member 40 communicates with the main fluid chamber 66 through the third opening hole 36d of the orifice forming member 36.
The first passage 40b ₁ of the first orifice forming member 3
6 of the third opening hole 36d and the second opening hole 34g of the inner cylinder 34
Through the passage, from the first passage 40b ₁ to the space where the second diaphragm 43 swells, the gap between the partition member 40a and the second orifice component 40 and the second orifice component 40 It communicates with the second passage 40b ₂ .

A fluid such as water is enclosed in a communication passage from the main fluid chamber 66 to the space in which the second diaphragm 43 swells, and the first and second orifice component members 36, The first to third orifices 68A, 70A, 72A and the first to third sub-portions that generate fluid resonance when the volume of the main fluid chamber 66 changes due to the 40 and the first and second diaphragms 32c and 43. Fluid chamber 68
B, 70B, 72B are formed.

That is, the first orifice 68A is shown in FIG.
As shown in, the space surrounded by the minimum diameter cylindrical portion 36a of the first orifice constituting member 36 is
The space defined by the movable plate 46 below 8A is the first
It becomes the sub-fluid chamber 68B. In addition, as shown in FIG.
The orifice 70A is the inner space of the inner cylinder 34, and the inner space of the inner cylinder 34 near the first diaphragm 32c serves as the second sub-fluid chamber 70B. Further, the third orifice 72A is
As shown in FIGS. 5 and 6, it is a space from the first passage 40b ₁ of the second orifice constituting member 40 to the position where the second diaphragm 43 bulges inward through the second passage 40b ₂ . The third sub-fluid chamber 72B becomes a space in which the second diaphragm 43 swells.

The characteristic of the fluid resonance system constituted by the first orifice 68A and the first sub-fluid chamber 68B is that the damping peak frequency (the frequency at which the damping is maximum) is muffled sound vibration / acceleration in the passenger compartment. Noise vibration (80-800Hz)
The above is adjusted to match the frequency. Further, the second orifice 70A and the second auxiliary fluid chamber 70B
The characteristic of the fluid resonance system is that the damping peak frequency is an idling vibration (20 to 30 Hz) that occurs when the vehicle is stopped.
The degree is adjusted to match the frequency. In addition, the third orifice 72A and the third auxiliary fluid chamber 72B
The characteristic of the fluid resonance system constituted by is adjusted so that its damping peak frequency matches the frequency of engine shake vibration (20 Hz or less) generated during braking or the like.

The exciting coil 52b of the electromagnetic actuator 52 is connected to the controller 74 via a harness, and as shown in the block diagram of FIG. 1, a drive signal y as a drive current supplied from the controller 74.
According to the above, a predetermined electromagnetic force is generated. The controller 74 includes a microcomputer (not shown), necessary interface circuits, A / D converter, D /
It is configured to include an A converter, an amplifier, etc., and when a high-frequency vibration of an idle vibration frequency or higher (for example, muffled sound vibration) is input, it has the same cycle as the vibration but the phase is opposite. Phase control vibration is engine mount 2
0, so that the transmission force of the vibration to the member 28 becomes “0” (more specifically, the exciting force input to the engine mount 20 by the vibration of the engine 22 side is applied to the electromagnetic actuator 52). The driving signal y is generated and supplied to the exciting coil 52b so as to be canceled by the control force obtained by the electromagnetic force of.

Here, idle vibration and muffled sound vibration are
For example, in the case of a reciprocating 4-cylinder engine, the engine rotation 2
The main cause is that the engine vibration of the next component is transmitted to the member 28 via the engine mount 20, so if the drive signal y is generated and output in synchronization with the secondary component of the engine rotation, the vibration transmission rate. Can be reduced. Therefore,
In the present embodiment, the rotation of the crankshaft of the engine 22 is synchronized (for example, in the case of a reciprocating 4-cylinder engine,
A pulse signal generator 76 is provided which generates an impulse signal and outputs it as a reference signal x each time the crankshaft rotates by 180 degrees.
Is supplied to the controller 74 as a signal indicating the generation state of the vibration.

On the other hand, as described above, the engine mount 2
0 has a built-in load sensor 54, detects the vibration state of the member 28 in the form of a load, outputs it as a residual vibration signal e, and supplies the residual vibration signal e to the controller 74 as a signal representing the vibration after interference. Has been done. And
The controller 74 generates and outputs the drive signal y based on the reference signal x and the residual vibration signal e according to the Filtered-X LMS algorithm which is one of the adaptive algorithms of the successive update type.

That is, to the electromagnetic actuator 52 of the engine mount 22 from the controller 74, the filter coefficient of the adaptive digital filter W is sequentially driven at a predetermined sampling clock interval from the time when the reference signal x is input. supplied as y. As a result, a magnetic force corresponding to the drive signal y is generated in the exciting coil 52b,
Since the movable plate 46 is already given a constant magnetic force by the permanent magnet 52c, it can be considered that the magnetic force by the exciting coil 52b acts to strengthen or weaken the magnetic force of the permanent magnet 52c. That is, the exciting coil 52
When the drive signal y is not supplied to b, the movable plate 4
6 is the elastic supporting force of the spring member 48 and the permanent magnet 52.
It will be displaced to a neutral position balanced with the magnetic force of c. When the drive signal y is supplied to the exciting coil 52b in this neutral state, if the magnetic force generated in the exciting coil 52b by the drive signal y is in the opposite direction to the magnetic force of the permanent magnet 52c, the movable plate 46 is electromagnetically moved. It is displaced in a direction in which the clearance with the actuator 52 increases. On the other hand, if the magnetic force generated in the exciting coil 52b is in the same direction as the magnetic force of the permanent magnet 52c, the movable plate 46 will move to the electromagnetic actuator 5
It is displaced in the direction in which the clearance with the 2 decreases.

As described above, the movable plate 46 can be displaced in both up and down directions by the magnetic force generated by the electromagnetic actuator 52, and when the movable plate 46 is displaced up and down, the main fluid chamber 66 can be moved.
Of the supporting elastic body 32 due to the change in the volume of
Since the expansion direction spring is deformed, the engine mount 20 is actively supported in both forward and reverse directions. Then, each filter coefficient W ₁ of the adaptive digital filter W that becomes the drive signal y is a synchronous Filtered-X.
Since the values are sequentially updated according to the LMS algorithm, after the filter coefficients W _i of the adaptive digital filter W have converged to the optimum values after a certain amount of time has passed, the drive signal y
Is supplied to the engine mount 20, so that the member 2 is transferred from the engine 22 through the engine mount 20.
The idle vibration and muffled sound vibration transmitted to the 8 side are reduced.

Here, when the frequency of the vibration input from the engine 22 side to the engine mount 20 is near the vibration frequency of the engine shake during braking, in this embodiment, the main fluid chamber 66 is set to the first The third auxiliary fluid chamber 72B is connected to the third auxiliary fluid chamber 72A through the three orifices 72A,
Moreover, since the damping peak frequency of the fluid resonance system matches the shake vibration frequency, when the volume of the main fluid chamber 66 fluctuates, the main fluid chamber 66 passes through the third orifice 72A.
And, fluid resonance occurs between the third sub-fluid chamber 72B. As a result, a high damping force can be applied to shake vibration, and a good vibration damping effect can be obtained.

Further, when the frequency of the vibration input from the engine 22 side to the engine mount 20 is near the idle vibration frequency when the vehicle is stopped, in the present embodiment, the main fluid chamber 66 is connected to the second orifice 70A. Second through
Since it is also communicated with the sub-fluid chamber 70B and the damping peak frequency of the fluid resonance system is matched with the idle vibration frequency, when the volume of the main fluid chamber 66 changes, the main fluid chamber 66 and Fluid resonance occurs between the second sub-fluid chambers 70B, and accordingly, a larger control force can be generated by the electromagnetic actuator 52 as described above. Therefore, especially the engine 22
It is possible to superimpose the control vibration having a large amplitude on the idle vibration having a large amplitude generated on the side, and to obtain a good vibration damping effect.

Further, when the frequency of the vibration input from the engine 22 side to the engine mount 20 is in the vicinity of the frequencies of the muffled sound vibration and the noise vibration during acceleration, in this embodiment, the main fluid chamber 66 is The first sub-fluid chamber 68B is also communicated with the first sub-fluid chamber 68A, and the damping peak frequency of the fluid resonance system is made to coincide with the muffled noise vibration / acceleration noise vibration frequency.
If the volume of the fluid changes, the fluid resonance occurs between the main fluid chamber 66 and the first sub fluid chamber 68B through the first orifice 68A.
2, a larger control force can be generated.

Incidentally, in this embodiment, since the rubber seal member 47 is interposed between the movable plate 46 and the gap retaining ring 50, the air sealed between the movable plate 46 and the electromagnetic actuator 52 is sealed. A chamber is formed. When the drive signal y is supplied to the exciting coil 52b of the electromagnetic actuator 52 to displace the movable plate 46 as described above, the air in the sealed air chamber acts as an air spring. However, since the spring constant of the air spring in the air chamber changes due to the volume variation according to the internal air temperature (substantially also affected by the environmental temperature), the displacement of the movable plate 46 with respect to the same drive signal y is changed. The amount may change depending on the air temperature at that time. Therefore, in the present embodiment, the third diaphragm 51 is interposed between the upper surface of the yoke 52a serving as the air chamber and the atmosphere so that the air spring constant in the air chamber is always constant.

Next, a spring member 48 for maintaining the movable plate 46 at a predetermined position with respect to the electromagnetic actuator 52.
The details of the supporting structure will be described. FIG. 7 shows a small size of the spring member 48 and its supporting structure of the present embodiment shown in FIG. 2, and shows a state in which the electromagnetic actuator 52 is not illustrated, but as described above, it is made of a substantially ring-shaped thin plate. Spring member 48 (actually, a plurality of
The inner peripheral end portion 48i of the laminated body) is wider than the thickness of the spring member 48 and the upper protruding portion 4 of the movable body 46.
6a and the upper surface of the disc-shaped portion are loosely fitted in a groove (movable plate side receiving portion) 46b formed with a predetermined gap (the gap in this state is below the spring member 48). Occur). Further, the outer peripheral end 48o of the spring member 48 is also loosely fitted in the accommodation body side receiving portion 53 formed between the spacer 47 and the spring member supporting portion 41a with a predetermined gap (in this state). Gap occurs at the upper side of the spring member 48). Therefore, when the electromagnetic actuator 52 is excited from the state shown in the figure as described above, the movable plate 4 that is a magnetic body is
6 is moved in the electromagnetic actuator 52 side, that is, in the vertical direction in the drawing, the inner peripheral end portion 48 of the spring member 48 is
When i is pulled down or pulled up to release the electromagnetic actuator 52 from being held, the inner peripheral end portion 48i of the spring member 48 together with the movable plate 46 is raised or lowered to the state shown in the drawing to be restored. . At this time, in the present embodiment, since both the inner peripheral end portion 48i and the outer peripheral end portion 48o of the spring member 48 are supported by the free ends, the stress generated due to the deformation of the spring member 48 may be anywhere. There is no local concentration, and the spring member 48 is stabilized in the entire width direction. Therefore, the maximum stress generated in the spring member 48 is smaller than that in the conventional spring member fixing and supporting structure, and the movable plate 46 is vibrated finely as in the above high frequency vibration input to cancel (attenuate) the vibration input. Even when
Fatigue is unlikely to occur in the spring member 48.

By the way, when the uppermost end of the actuator sub case 41 is folded back to form the spring member support portion 41a, the spring member is placed between the upper surface of the spacer 47 and the lower surface of the spring member support portion 41a. A space wider than the wall thickness of 48, that is, a receiving body side receiving portion 53 of a predetermined height
So that the outer peripheral portion of the upper surface of the spacer 47 is
The convex portion 47a having the same height as the gap is formed. Reference numeral 41b clearly shown in FIG. 7 denotes a thin film sealing member on the inner peripheral surface of the actuator sub case 41.

By the way, the spring member 4 in the present embodiment.
Detailed shape of 8 is as shown in FIG. 8, formed at equal intervals radially slit from the inner peripheral end portion of the spring member 48 made of a ring-shaped thin plate as described above, the inner peripheral end The portion 48i is thin . I follow, by employing the spring member 48 to the spring member support structure of FIG. 7, shorter contact line length of the variable rotation plate 46 and the spring member 48 (strictly a contact area) (small) becomes, the spring when the member 48 is deformed, the outer peripheral end portion of the spring member 48 is supported free end 48o and the inner peripheral end 48i with the displacement of the movable plate 46 as before mentioned, the movable plate 46 and the actuator subcase Although slippage occurs with respect to 41 etc., if the contact line length (contact area) between the two is short (small) in this way, the wear generated between the two also becomes small, and the amount of metal powder generated from both is reduced by that much. The amount is also reduced. Therefore, the wear performance is reduced and the durability performance as a vibration isolation support device is improved.
By reducing the generation amount of the metal powder, it is also possible to prevent the metal powder from entering the sliding portion or the movable portion such as the spring member 48 and the movable plate 46 or the actuator sub case 41 to cause a scratch. To be prevented.

In this embodiment , a plurality of spring members 48 (two in the figure) are stacked and the liquid-tight elastic film 5 is provided on the supporting elastic body 32 side, that is, the main fluid chamber 66 side.
Is pasted . Also, the lower spring member 48 from the upper surface of the upper protrusion 46a of the movable plate 46 facing the main fluid chamber 66 in conjunction with this, and more specifically to a position opposed to the spacer 47, the communication passage through which fluid flows 44 has been opened. Incidentally, the throttle coefficient of the communication passage 44 is, for example, the frequency of the muffled noise of the engine or the noise during acceleration, that is, 8
It is set so that the flow resistance of the fluid prevails against the fluid vibration of about 0 to 800 Hz and the fluid cannot move.

Further, in the present embodiment, before Fang Ne member 4 8
When the two are superposed on each other, the positions of the two are slightly shifted in the rotational direction as shown in FIG. 8 , and the upper and lower spring members 48 (U, L) are arranged.
The slits are not overlapping each other. Therefore, as shown in FIG. 9, the inner peripheral end portions 48i of the spring members 48 project so as to fill up the respective slits (in the figure, the inner peripheral end portions of the lower spring members 48L are 48i).
(L), the inner peripheral end of the upper spring member 48U is set to 48i
(Indicated by (U)), the inner peripheral end portion 4 is continuous as a whole in a plan view.
8i is formed. However, since the inner peripheral end portions 48i of each spring member 48 do not overlap each other, each spring member 4 including the inner peripheral end portion 48i.
It does not hinder the deformation of No. 8. Then, the liquid-tight elastic film 4 is further attached to the spring member 48 thus superposed.
If the movable plate 46 does not have the communication passage 44 by bonding 5 to each other, the movable plate 46 and the liquid-tight elastic film 4 are bonded.
The main fluid chamber 66 is divided by the entire spring member 48 to which 5 is attached. Actually, in the fluid vibration in the frequency band lower than the muffled noise and the noise during acceleration, the fluid flows between the main fluid chamber 66 and the sub fluid chamber 44a between the spring member 48 and the movable plate 46 through the communication passage 44. Move between.

According to this anti-vibration support device, vibration in a frequency band lower than the muffled noise and the noise during acceleration is input from the engine 22 to the support elastic body 32, and as a result, fluid vibration of the same degree is generated. , The main fluid chamber 6 associated therewith
The volume fluctuation of 6 is from the main fluid chamber 66 to the communication passage 44.
The fluid is smoothly absorbed by the movement of the fluid to the sub-fluid chamber 44a below the spring member 48. Of course, the vibration input itself is efficiently damped by the orifices and the sub-fluid chambers.

On the other hand, when fluid vibration having a frequency of about the muffled noise of the engine or the noise during acceleration occurs, the flow resistance of the fluid prevails and the fluid cannot move in the communication passage 44, which is a so-called stick state. When the electromagnetic actuator 52 is excited or released by the drive signal from the controller 74 in response to such a vibration input and the movable plate 46 is displaced, the liquid tightness together with the movable plate 46 is increased. From the elastic film 45 to the spring member 4
Up to 8 are displaced together and try to exert a volume variation on the fluid in the main fluid chamber 66. The damping action of the vibration input at that time is similar to that described above, but in the present embodiment, the liquid-tight elastic film 45 is used.
Since the pressure receiving area or pressing area until the spring member 48 and the movable plate 46 is greatly from relative displacement of the equivalent of the movable plate 46, to allow a greater volume change than those.

Further, since the rubber seal member 49 substantially interposed between the movable plate 46 and the gap retaining ring 50 needs to allow the displacement of the movable plate 46, it is comparatively possible. There is no choice but to use one with a low spring constant. However, in the fluid until the rubber seal member 49 of this is configured to be moved freely to the rubber seal member 49 becomes the main fluid chamber 66 and (a sub fluid chamber 68B by vibration input), the rubber seal Since the low spring constant of the member 49 is added to the high spring constant of the support elastic body 32, the expansion elasticity as a whole is smaller than the expansion elasticity of the support elastic body 32 alone. I will end up. However, when the electromagnetic actuator 52 is driven, the communication passage 44
However, the fluid does not move in the vicinity of the rubber seal member 49, and the expansion elasticity of the rubber seal member 49 is substantially separated from the expansion elasticity of the support elastic body 32 to attenuate the volume fluctuation of the main fluid chamber 66. The expansion elasticity to
Since the supporting elastic body 32 is used alone, high damping efficiency can be secured. From these two points, it is possible to obtain a high damping effect in the anti-vibration support device of the present embodiment, and as a result, it is possible to obtain a high output while reducing the size of the movable plate, and thus the overall size.

Next, a second embodiment of the spring member 48 and its supporting structure in the anti-vibration supporting device for maintaining the movable plate 46 at a predetermined position with respect to the electromagnetic actuator 52 will be described. 10, the first is a detailed view showing the spring member 48 and its supporting structure of the second embodiment with respect to FIG. 7 is an embodiment, similar reference numerals to the same members as in the first embodiment , And a detailed description thereof is omitted. The biggest difference between the present embodiment and the first embodiment is that, as is clear from FIG. 10 , the cover member 57 is superposed above the spring member 48 having the same thickness as that used in the first embodiment. Further, the liquid-tight elastic film 45 is attached to the supporting elastic body 32 side, that is, the main fluid chamber 66 side. However, there is no change in that the inner peripheral end portion 48i and the outer peripheral end portion 48o of the spring member 48 thus configured are supported by the free ends as in the conventional cases. Along with this, a communication passage 44 through which the fluid flows is formed from the upper surface of the upper protruding portion 46a of the movable plate 46 to a position facing the spacer 47. Incidentally, the throttling coefficient of the communication passage 44 is set to the same degree as that of the first embodiment.

As shown in FIG. 11 , the cover member 57 has a shape similar to that of the spring member 48 shown in FIG. 8. However, like the spring member 48, the cover member 57 is divided by a slit to have an inner periphery. The protruding inner peripheral end portion has an existing hinge mechanism 57.
By b, it is rotatable in the vertical direction, and the width of the inner peripheral projecting end portion is formed wider than the width of the slit on the inner peripheral end portion side of the spring member 48. Then, the inner peripheral end portion of the cover member 57 which is rotatable in the vertical direction becomes the cover portion 57a by the hinge mechanism 57b, and the cover portion 57a is
As shown in FIG. 12 , by overlapping the slits of the lower spring member 48 so as to overlap each other, the inner peripheral end portion 48i of the spring member 48 and the inner peripheral end portion of the cover portion 57a are continuously formed, In plan view, the inner peripheral end portion that is continuous as a whole is formed. However, since the cover portion 57a of the cover member 57 is rotatable in the vertical direction by the hinge mechanism 57b, the spring member 48 is provided.
The deformation of each spring member 48 including the inner peripheral end portion 48i is not hindered. Then, the liquid-tight elastic film 45 is further formed on the cover member 57 superposed on the spring member 48 in this manner.
By attaching the
4, the movable plate 46 and the liquid-tight elastic film 45 are provided.
The main fluid chamber 66 is divided by the entire spring member 48 and the covering member 57 to which is attached. Actually, in the fluid vibration in the frequency band lower than the muffled noise and the noise during acceleration, the fluid flows between the main fluid chamber 66 and the sub fluid chamber 44a between the spring member 48 and the movable plate 46 through the communication passage 44. Move between.

The function and effect of this vibration isolating support device are the same as or substantially the same as those of the first embodiment, and the volume fluctuation of the main fluid chamber 66 due to the fluid vibration in the low frequency band is different from that of the main fluid chamber 66. The fluid is smoothly absorbed by the movement of the fluid through the communication passage 44 to the sub fluid chamber 44a below the spring member 48. Further, with respect to the vibration of high frequencies, a large pressure receiving area from the liquid-tight elastic film 45 to the spring member 48 and the movable plate 46 and a support elastic body 32 in which the expansion elasticity of the rubber seal member 49 is separated. by a high damping efficiency by extension elastic, it is possible to obtain high have damping efficiency,
As a result, it becomes possible to obtain a high output while reducing the size of the movable plate, and thus the size of the whole. Of course, since the inner peripheral end portion 48i and the outer peripheral end portion 48o of the spring member 48 are supported by free ends, it is possible to reduce the maximum stress generated and ensure the durability performance. By forming a slit in 48, it is possible to suppress the occurrence of wear and scratches.

In each of the above-described embodiments, the support of each end of the leaf spring is the free end support, but it goes without saying that only one of the ends may be the free end support. Is. Further, in the plan planning embodiment, only the case where the seal member for isolating the actuator is provided between the movable plate and the storage body has been described. It may be arranged between the movable plate and the actuator.

Further, the shape or the number of the orifices and the sub-fluid chambers for damping the vibration input in each of the above embodiments is not limited to the above, and may be set appropriately according to the damping specifications. Further, in each of the above embodiments, the actuator that drives the movable plate is an electromagnetic actuator, and the permanent magnet is used to always attract the movable plate to the actuator side, but these functional elements are not limited to the above. Instead, existing actuators or suction means may be appropriately selected and used.

Further, in each of the above-mentioned embodiments, only the anti-vibration support device interposed between the engine of the vehicle and the vehicle body has been described. However, the anti-vibration support device of the present invention includes other vibration sources and It can be developed in any manner between the supporting body and the supporting body.

[0055]

As described above, according to the vibration isolating support device of the first or second aspect of the present invention, the inner and outer peripheral ends of the plate-shaped spring member can be freely displaced in the surface direction. You can
During the deformation of the spring member accompanying the displacement of the movable plate, large local stress, that is, stress concentration, can be avoided and fatigue due to repetition can be avoided , and slits are provided.
Line between the end of the spring member on the retracted side and the housing or movable plate
Displacement of the movable plate and deformation of the spring member due to the reduced length
The wear of the contact area due to
It reduces the amount of metal powder generated and reduces the
It is possible to prevent the occurrence of scratches and prevent the slits from crossing.
Multiple sheets are stacked in the fluid chamber so that they do not overlap
Attach the spring member and the side surface of the supporting elastic body.
The liquid chamber is supported by the elastic membrane
And the movable plate side, and the divided fluid chambers communicate with each other.
Since it is connected by a road, this communication passage
The movable plate is not driven when the low frequency vibration is input.
Between the fluid chambers, where
If fluid movement is possible, it is
The volume fluctuation of the fluid chamber on the supporting elastic body side is
Absorbs by moving the fluid to the fluid chamber, and has a proper damping effect
It is possible to ensure that the communication passage is
When the movable plate is driven when wave number vibration is input,
The transfer of fluid between the fluid chambers divided by the viscous resistance of the body
If the movement is not allowed, the spring member, elastic film and flexible
A large pressure receiving area can be obtained for all moving plates.
By the sealing member between the required movable plate and the storage body
Compensating for the decrease in expansion elasticity of the elastic support,
It is possible to obtain a high damping efficiency with respect to the order.

According to claim 3 or 4 of the present invention
According to the vibration isolation support device, the inner and outer peripheral ends of the plate-shaped spring member are
It can be freely displaced in the plane direction, and the displacement of the movable plate
Large local stress is generated during deformation of the spring member,
To avoid excessive stress concentration and fatigue due to repetition.
Spring member on the side where slits are provided
The length of the contact line between the end of the box and the housing or movable plate has become shorter.
Therefore, the displacement of the movable plate and the contact portion of the spring member
Abrasion is reduced, and the amount of metal powder generated due to abrasion is also
To prevent the occurrence of scratches on sliding parts and movable parts.
Liquid-tightness with each spring member and cover member
The elastic membrane allows the fluid chamber to be supported on the elastic side and the movable plate side.
And the fluid chamber is divided into
Since it is in communication, this communication path is
It is suitable when the movable plate is not driven during dynamic input.
Movement of fluid between fluid chambers segmented as cut orifices
If possible, the support associated with the deformation of the support elastic body
Changes in volume of the fluid chamber on the elastic side are transferred to the fluid chamber on the movable plate side.
Absorb by fluid movement to ensure proper damping effect
The high-frequency vibration input
When the movable plate is driven under force, the viscous resistance of the fluid
Allows the movement of fluid between the divided fluid chambers by
If not, the spring member and the cover member, the elastic film, and
A large pressure receiving area can be obtained for all movable plates.
For example, the required seal member between the movable plate and the storage
Equivalent movable plate to compensate for the decrease in expansion elasticity of the elastic support
It is possible to obtain high damping efficiency with respect to displacement.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an example in which a vibration-damping support device of the present invention is interposed between a vehicle engine and a vehicle body.

FIG. 2 is a front vertical cross-sectional view showing an example of the anti-vibration support device adopted in FIG.

FIG. 3 is a partial side sectional view of the anti-vibration support device of FIG.

FIG. 4 is a plan view of the anti-vibration support device shown in FIG.

5A and 5B are operation explanatory views of a damping effect by the vibration isolation support device shown in FIG.

6 is an explanatory diagram of a fluid resonance system of engine shake vibration formed in the vibration isolation support device shown in FIG.

FIG. 7 is a detailed explanatory diagram of a spring member and its indicating structure showing the first embodiment of the vibration isolating support device of the present invention.

8 is a spring member and liquid used in the vibration-damping support device of FIG .
It is explanatory drawing of the joining state with a dense elastic film .

9 is a spring member and a liquid adopted in the anti-vibration support device of FIG .
It is explanatory drawing of the joining state with a dense elastic film.

FIG. 10 is a view showing a second embodiment of the anti-vibration support device of the present invention .
It is a detailed explanatory view of a net member and its instruction structure.

FIG. 11 is a spring member used in the anti-vibration support device of FIG .
It is explanatory drawing of the joining state of a liquid-tight elastic film.

FIG. 12 is a spring member used in the anti-vibration support device of FIG .
It is explanatory drawing of the joining state of a liquid-tight elastic film.

[Explanation of symbols]

20 is an engine mount (anti-vibration supporting device) 22 is an engine (vibrating body) 26 is a vehicle body (supporting body) 30 is a connecting member (vibrating body side connecting member) 32 is a support elastic body 32c The first diaphragm 34 is an inner cylinder 36 The first orifice component member 38 is the outer cylinder 40, the second orifice component member 40b ₁ is the first communication hole 40b ₂ , the second communication hole 41 is the actuator sub case (accommodation body) 41a is the spring member support part (accommodation body) 42 Is the actuator case 43 is the second diaphragm 44 is the communication passage 44a is the sub-fluid chamber 45 is the elastic film 46 is the movable plate 46b is the groove (movable plate side receiving portion) 47 is the spacer (housing) 48 is the spring member 48i is the inner circumference End (movable plate side end) 48o is outer peripheral end (container side end) 49 is rubber seal member 50 is gap holding ring (container) 51 is third diaphragm 52 is electric. An actuator (actuator) 53 is a storage body side receiving portion 56 is a vehicle body side connecting member (support body side connecting member) 57 is a covering member 57a is a covering portion 66 is a main fluid chamber 68A, a first orifice 68B is a first auxiliary fluid chamber 70A is a first The second orifice 70B is the second sub-fluid chamber 72A, the third orifice 72B is the third sub-fluid chamber 74, and the controller (control means).

─────────────────────────────────────────────────── ─── Continuation of front page (72) Yosuke Akatsu, 2 Takara-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd. (56) Reference JP-A-7-167202 (JP, A) JP-A-8- 61425 (JP, A) JP 7-269645 (JP, A) JP 4-42228 (JP, A) JP 7-197989 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16F 13/26

Claims (4)

(57) [Claims] 1. A support elastic body interposed between a vibrating body and a support body, a storage body connected to the support elastic body, and a fluid chamber defined in the support elastic body and having a fluid enclosed therein. A movable plate that changes the volume of the fluid chamber, an actuator that is provided in the housing to apply a displacement force to the movable plate, and a vibration transmitted from the vibrating body to the support body is reduced. A control means for supplying a control signal to the actuator; and a movable plate interposed between the movable plate and the container for maintaining the movable plate at a predetermined position with respect to the actuator. In a vibration-damping support device including a spring member elastically supporting the movable member and a sealing member that seals the fluid in the fluid chamber, the movable plate-side end portion and the container-side end portion of the spring member are respectively supported by the movable plate. And for the storage body Ri movable free end supporting der, the spring
The outer shape corresponding to the end of the member on the housing side is circular or substantially circular.
There is a hole in the center of the movable plate side edge.
To form a corresponding inner shape, from the inner peripheral side of the spring member or outside
A slit is formed from the peripheral side, and multiple spring members are formed.
A plurality of springs that are stacked and are stacked in the fluid chamber
Each spring member so that the slits of the material do not overlap each other
Liquids so that they cover the sides of the supporting elastic body.
A dense elastic film is attached to the fluid chamber to support the elastic body side.
Between the movable plate side and the separated fluid chambers
Communicate with each other by a communication passage provided in the movable plate.
Vibration isolation support system, characterized in that the. 2. A vibrating body-side coupling member that is coupled to the vibrating body, a supporting-body-side coupling member that is coupled to the support, and a supporting elastic body that is coupled to one of the vibrating-body-side coupling member or the supporting-body-side coupling member. And a storage body connected between the supporting elastic body and the other of the vibrating body side connecting member or the supporting body side connecting member, and a fluid chamber defined in the supporting elastic body and having a fluid sealed therein. A movable plate that forms a part of the partition wall of the fluid chamber and is displaceable in a direction that changes the volume of the fluid chamber; and the movable plate that is disposed in the housing and generates a magnetic force. An actuator for applying a displacement force to the actuator, control means for supplying a control signal to the actuator so as to reduce vibration transmitted from the vibrating body to the support, and the movable means for isolating the actuator from the fluid chamber. The seal member arranged between the plate and the storage body or the actuator, the movable plate side receiving portion formed on the movable plate, the storage body side receiving portion formed on the storage body, and the movable plate The movable plate is elastically supported by the storage body in order to maintain it at a predetermined position with respect to the actuator, the movable plate side end portion is supported by the movable plate side receiving portion, and the storage body side end portion is in the storage body side receiving portion. A supported plate-shaped spring member, wherein the plate-shaped spring member is movably supported by at least one receiving portion, and
The outer shape corresponding to the end portion on the storage body side is circular or substantially circular,
A hole is provided in the central portion and corresponds to the movable plate side end.
The inner shape is formed and whether it is from the inner peripheral side or the outer peripheral side of the spring member.
To form slits and stack multiple spring members
A plurality of spring members arranged in the fluid chamber are stacked.
Each spring member is arranged so that the lits do not overlap each other
Liquid-tight so as to cover the sides of the supporting elastic body.
An elastic membrane is attached to support the inside of the fluid chamber. Elastic body side and movable plate
The side between the two fluid chambers is divided into
An anti-vibration support device characterized in that they are communicated with each other by a communication passage provided in a movable plate . 3. Support elasticity interposed between the vibrating body and the support.
Body, a storage body connected to the support elastic body, and the support
A fluid chamber defined in an elastic body and containing a fluid inside
A movable plate that changes the volume of the fluid chamber, and the storage
An actuator that is arranged inside the body and applies a displacement force to the movable plate.
And the vibration transmitted from the vibrator to the support
Supply a control signal to the actuator to reduce
Control means and the movable plate to the actuator
The movable plate and the storage body in order to maintain the movable plate at a predetermined position.
And elastically support the movable plate in the storage body.
Spring member and a seal for sealing the fluid in the fluid chamber
A vibration-damping support device including a member,
The movable plate side end and the storage body side end are respectively supported by the movable plate.
And a free end support movable with respect to the storage body,
The outer shape corresponding to the end of the member on the housing side is circular or substantially circular.
There is a hole in the center of the movable plate side edge.
To form a corresponding inner shape, from the inner peripheral side of the spring member or outside
Slits are formed from the peripheral side and overlapped with the spring member.
The cover member in the shape of
Cover the lit and rotate freely in the direction of deformation of the spring member
The covering stomach to form, the spring member by the cover portion
The cover member so as to cover the slit of the spring member.
Lay it on the supporting elastic body side and attach the side surface of the supporting elastic body.
Apply a liquid-tight elastic film to cover them and apply
By placing it inside the body chamber, it supports elasticity inside the fluid chamber.
Both fluids are divided into body side and movable plate side.
The chambers are connected to each other by a communication passage provided on the movable plate.
Anti-vibration support device characterized by being connected. 4. A vibrating body-side coupling member that is coupled to the vibrating body
A support-side connecting member connected to the support;
Connect to either body-side connecting member or support-side connecting member
Supporting elastic body and the vibrating body side connecting member or supporting body
Connected between the other of the side connecting members and the supporting elastic body
And a storage body defined inside the supporting elastic body
Fluid chamber in which fluid is enclosed, and a part of the partition wall of the fluid chamber
Displacement in the direction that forms a fluid and changes the volume of the fluid chamber
A magnetizable movable plate that can be magnetized,
Actuator that generates a magnetic force and applies a displacement force to the movable plate.
And the vibration transmitted from the vibrator to the support
Supply a control signal to the actuator to reduce
The control means and the actuator from the fluid chamber.
The movable plate and the housing or actuator for separating
Formed on the movable plate and a seal member disposed between
Movable plate side receiving portion and the storage body side formed in the storage body
The receiving part and the movable plate are arranged with respect to the actuator.
The movable plate is elastically attached to the container to maintain it in a fixed position.
The movable plate side end is supported by the movable plate side receiving portion.
And a plate whose end on the container side is supported by the receiving part on the container side.
And a plate-shaped spring member,
Is also movably supported by one receiving portion, and
The outer shape corresponding to the end portion on the storage body side is circular or substantially circular,
A hole is provided in the central portion and corresponds to the movable plate side end.
The inner shape is formed and whether it is from the inner peripheral side or the outer peripheral side of the spring member.
Form a slit, and can be superposed on the spring member.
At least the slit of the spring member in the shape of the covering member
And a cover that freely rotates in the deformation direction of the spring member.
A cover portion of the spring member is formed by the cover portion.
The cover member so that the cover
Overlap the side of the elastic body and cover the side surface of the supporting elastic body.
Apply a liquid-tight elastic membrane and attach them to the fluid chamber.
By disposing the fluid chamber inside the support elastic body side
Between the movable plate side and the separated fluid chambers
Communicate with each other by a communication passage provided in the movable plate.
An anti-vibration support device characterized in that