JPH08193434A - Variable damping vibration control device - Google Patents

Abstract

PURPOSE: To properly perform the supporting of a vibration body and the transmission of motion by arranging a torque generator provided with a rotating body in the center of the vibration body and an electroviscous fluid type damper around it, and providing a swing member, a supporting shaft, and a suspending member. CONSTITUTION: A vibration body 10 is suspended and supported swingably through a frame 2 and a supporting member 3. Also a torque generator and an electroviscous fluid type damper 7 are arranged around the swing center of the vibration body 10. When a building 300 is vibrated, the vibration body 10 is vibrated at a lower position away from the torque generator and the damper 7. Then the quake of a building 300 is suppressed by the elastic force by a coiled spring 11, damping forces by the electroviscous fluid type damper, a viscous resistance cylindrical type damper 7, and a piston type damper 12, and actions of any force by the torque generator. Thus a variable damping device 1 can be rather reduced in size and, therefore, can be set even in a restricted space.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable damping vibration control system for a building to which an electrorheological fluid whose viscosity increases or decreases depending on an applied voltage is applied.

[0002]

2. Description of the Related Art Conventionally, various vibration control devices have been proposed for suppressing vibration of a building due to an earthquake, a strong wind, or the like.

[0003]

Recently, it has been attempted to apply an electrorheological fluid to a vibration damping device. An object of the present invention is to provide a vibration damping device to which an electrorheological fluid is applied, which is capable of suitably supporting a vibration body and transmitting motion (force).

[0004]

According to a first aspect of the present invention, there is provided a vibrating body (10) vibrating according to the vibration of a building (300), and a container containing an electrorheological fluid (200). Casing 40, 70), voltage applying means (current-carrying members 41a, 41b, 43) for applying a voltage to the electrorheological fluid.
a, 43b, 71a, 71b, 73a, 73b, a voltage applying device 47), and a rotating member (rotating blade 42, viscous resistance cylinder 72) disposed in the container and rotating in association with the vibration of the vibrating body. A variable damping vibration damping device including an electrorheological fluid damper (rotary blade damper 4, viscous resistance cylindrical damper 7) and elastic means (coil spring 11) that elastically deforms in association with the vibration of the vibrating body ( In 1), a suspension supporting means (frame 2, support member 3, swinging member 6, suspension member 9) for suspending and vibrating the vibrating body is provided, and rotation in which arbitrary torque can act. Material (5
1, 81) and an arbitrary torque generating means (torque generators 5, 8) arranged around the swing center (intersection point O) of the vibrating body, and the electrorheological fluid damper is used for the vibrating body. Of the arbitrary torque generating means and the electrorheological fluid damper and the vibrating body are connected to each other, and the rotation of each of the rotating members and the swinging of the vibrating body are mutually performed. It is characterized in that a motion transmitting means (a swinging member 6, a support shaft 6a, a hanging member 9, a support shaft 9a) for transmitting to

According to a second aspect of the invention, in the first aspect of the invention, a suspension member (9) for suspending the vibrating body as the suspension support means and the suspension member are swingable. And a second support member (frame 2, support member 3) that supports the first support member in a swingable manner. Means and an electrorheological fluid damper on the first support member and on the second support member, respectively.
As the motion transmitting means, each rotating member of the arbitrary torque generating means and the electrorheological fluid damper arranged on the first supporting member is connected to the hanging member, and the rotation of each rotating member and the hanging operation are performed. A first motion transmitting member (support shaft 9a) for mutually transmitting the swing of the lower member, and an arbitrary torque generating means and each rotating member of the electrorheological fluid damper arranged on the second supporting member. A second motion transmission member (support shaft 6) that is connected to the first support member and mutually transmits the rotation of each rotating member and the swing of the first support member.
a) is provided.

According to a third aspect of the present invention, in the first or second aspect of the invention, an internal space is divided in the container of the electrorheological fluid damper to limit the flow of the electrorheological fluid. A partition wall (40b) is provided, and the rotating member of the electrorheological fluid damper is provided with a pushing portion (flat plate 42b) for pushing the electrorheological fluid.

According to a fourth aspect of the present invention, in the first or second aspect of the invention, a plurality of plate-shaped electrodes (current-carrying members 71a, 71a, 71b, 73a, 73b) are alternately arranged.

[0008]

According to the first aspect of the invention, the vibrating body is suspended and swingably supported by the suspension supporting means, and the arbitrary torque generating means and the electrorheological fluid damper are vibrated by the vibrating body. Since it is arranged around the center, when the building vibrates, the vibrating body swings at a position apart from the arbitrary torque generating means and the electro-rheological fluid damper downward. Further, the swing of the vibrating body and the rotation of each rotating member of the arbitrary torque generating means and the electrorheological fluid damper are mutually transmitted via the motion transmitting means. Further, since the arbitrary torque generating means is provided, the force acting on the vibrating body can be freely controlled.

According to the second aspect of the invention, the vibrating body is suspended and swingably supported through the suspending member, the first supporting member and the second supporting member, and the arbitrary torque generating means is provided. And the electrorheological fluid dampers are arranged on the first support member and the second support member, respectively,
When the building vibrates, the suspension member swings together with the vibrating body with respect to the first support member, the arbitrary torque generating means and the electrorheological fluid damper disposed on the first support member, and The first support member swings with respect to the second support member and the arbitrary torque generating means and the electrorheological fluid damper arranged on the second support member.
Further, the swing of the suspension member and the rotation of each rotating member of the electrorheological fluid damper arranged on the first supporting member are transmitted to each other via the first motion transmitting member. , The mutual transmission of the swing of the first support member and the rotation of each rotary member of the electrorheological fluid damper and the arbitrary torque generating means arranged on the second support member via the second motion transmission member. In this manner, the oscillation of the vibrating body and the rotation of the arbitrary torque generating means and the rotating members of the electrorheological fluid damper are mutually transmitted.

According to the third aspect of the present invention, the electrorheological fluid in the container flows through the pushing portion, but the flow of the electrorheological fluid is limited through the partition wall, so that the electrorheological fluid flows. A large viscous resistance acts on the rotating member of the fluid damper.

According to the fourth aspect of the present invention, since viscous resistance is generated between the electrodes arranged alternately, a large viscous resistance acts on the rotating member of the electrorheological fluid damper as a whole.

[0012]

EXAMPLE A variable damping vibration damping device 1 according to an example of the present invention.
As shown in FIG. 1 or 2, is a frame 2, a support member 3, rotary vane type dampers 4, 4, torque generators 5, 5, an oscillating member 6, viscous resistance cylindrical dampers 7, 7, torque generation. Vessel 8, 8, suspension member 9, vibrating body 10, coil spring 11,
It is configured by the piston type damper 12 and the like, and is installed on the floor surface such as the top floor of the building 300.

As shown in FIG. 2, the frame 2 has a frame body 21 formed in a quadrangle by four beams. The frame body 21 has a vibrating body 10 (described later) as a floor surface of a building 300. As shown in FIG. 1, so as to be arranged at a predetermined height from
It is fixed on the floor surface of the building 300 by a plurality of pillars 22 having a predetermined length. The frame body 21 of the frame 2 shown in FIG.
Support members 3 and 3 are fixed to the upper and lower beams in such a manner as to face each other. On the support members 3 and 3, rotary blade dampers 4 and 4 and torque generators 5 and 5 are provided. Has been.

Each rotary blade damper 4 has a casing 4
0 is provided in a fixed form with respect to the support member 3, and the casing 40 includes a rotor blade 42 as shown in FIG.
It is formed in a cylindrical shape so that a predetermined gap is formed between the flat plates 42b (described later) and the tips of the plates 42b. And
Partition walls 40b, 40b are provided inside the casing 40 so as to divide the space inside the casing 40 into two equal parts and to open a predetermined gap between the partition wall 40b and the rotary shaft 42a of the rotary blade 42. Further, as shown in FIG. 2, a shaft hole 40 a is formed in the central portion of the casing 40, so that
It is formed corresponding to 2a.

Inside the casing 40, rotary blades 42 are provided so as to be rotatably supported.
That is, the rotary blade 42 has a rotary shaft 42a, and the rotary shaft 42a extends to the outside of the casing 40 through a shaft hole 40a and is integral with the support shaft 6a of the swing member 6 (described later). And is rotatably supported via a bearing 6b. The rotary shaft 42a and the shaft hole 40a
The space is sealed with an oil seal or the like (not shown). And, as shown in FIG.
Flat plates 42b, 42b formed perpendicular to the rotation direction
Are fixed, and the flat plates 42b and 42b are the partition walls 40.
It is arranged in each of the internal spaces of the casing 40 that is bisected by b and 40b.

The inner peripheral surface of the casing 40 and the partition wall 40
Current-carrying materials (electrodes) 4 are provided at the tips of b and 40b, respectively.
1a, 41a, 41b, 41b are fixed. On the other hand, the current-carrying materials 43a and 43 are respectively provided on the tips of the flat plates 42b and 42b of the rotary blade 42 and the outer peripheral surface of the rotary shaft 42a.
a, 43b, 43b are the current-carrying materials 41 on the casing 40 side.
The a, 41a, 41b, and 41b are fixed so as to face each other with a predetermined gap therebetween. A voltage applying device 47 (power source or the like) is connected to each of the conductive members 41a, 41b, 43a, 43b, and a vibration sensor (not shown) or the like is connected to the voltage applying device 47. It should be noted that the voltage application device 4 shown by a chain double-dashed line in FIG.
The wiring to 7 is for convenience of illustration. The electrorheological fluid 200 is enclosed in the casing 40.

Each torque generator (motor) 5 has a structure shown in FIG.
As shown in FIG. 3, the fixing member 50 is provided in a fixed form with respect to the supporting member 3, and the rotating member 51 is provided inside the fixing member 50 and the supporting shaft 6a of the swinging member 6 (described later).
It is provided in the form integrally formed with. Then, as shown in FIG. 5, electromagnets 50e and 51e are attached to the fixed member 50 and the rotary member 51, respectively, in such a manner that electromagnetic forces can act on each other. Then, each electromagnet 50
A control device (not shown) is connected to e and 51e, and a vibration sensor or the like is connected to the control device.

On the other hand, the rocking member 6 is provided between the support members 3 and 3.
Are provided so as to be swingably supported. That is,
Support shafts 6a, 6a are provided on both upper and lower sides of the swing member 6 in FIG.
The support shaft 6 is fixed so that it is arranged in a straight line.
The a and 6a are rotatably supported by the support members 3 and 3 via bearings 6b and 6b. In addition, a hanging hole 6c is provided at the center of the swinging member 6 and a hanging member 9 (described later) is provided.
Is formed corresponding to. Then, on the rocking member 6, viscous resistance cylindrical dampers 7, 7, a torque generator 8,
8 are provided so as to be arranged on both left and right sides of the hanging hole 6c in the figure.

Each viscous resistance cylindrical damper 7 is provided with a casing 70 fixed to the rocking member 6, and the casing 70 has a viscous resistance cylinder 72 (as shown in FIG. 1). It is formed in a cylindrical shape so that a predetermined gap is formed between it and (described later). A shaft hole 70a is formed in the center of the casing 70 so as to correspond to the rotation shaft 72a of the viscous resistance cylinder 72.

Inside the casing 70, a viscous resistance cylinder 72 is rotatably supported. That is, the viscous resistance cylinder 72 has the rotating shaft 72a, and the rotating shaft 72a extends to the outside of the casing 70 through the shaft hole 70a, and supports the supporting shaft 9a of the suspension member 9 (described later). It is formed integrally and is rotatably supported via a bearing 9b. The rotary shaft 72a
The space between the shaft hole 70a and the shaft hole 70a is sealed by an oil seal or the like (not shown). Then, the disk 7 is attached to the rotary shaft 72a.
2b is fixed.

Further, on the inner peripheral surface and both inner side surfaces of the casing 70, cylindrical current-carrying materials (electrodes) 71 having different diameters are provided.
a, 71b, 71b are fixed. On the other hand, on the outer peripheral surface and both side surfaces of the disk 72b of the viscous resistance cylinder 72, cylindrical current-carrying materials 73a, 73b, 73b having different diameters are provided.
The energization members 71a, 71b, 71b on the casing 70 side are fixed to each other in an alternating manner with a predetermined gap. Then, the current-carrying materials 71a, 71b, 73a, 7
A voltage application device 47 is connected to 3b. In addition,
Wiring to the voltage application device 47 indicated by a chain double-dashed line in FIG. 1 is for convenience of illustration. And the casing 70
An electrorheological fluid 200 is enclosed inside the

Each torque generator (motor) 8 is provided with a fixing member 80 fixed to the swinging member 6, and a rotating member 81 is provided inside the fixing member 80.
The suspension member 9 is provided integrally with the support shaft 9a of the suspension member 9. An electromagnet (not shown) is attached to each of the fixed member 80 and the rotating member 81 in such a manner that an electromagnetic force can act on each other. A control device (not shown) is connected to each electromagnet, and a vibration sensor or the like is connected to the control device.

On the other hand, a hanging member 9 is provided in the hanging hole 6c of the rocking member 6 so as to be rockably supported.
That is, the support shafts 9a and 9a are provided on both left and right sides of the hanging member 9 in FIG.
a is fixed so as to be arranged in a straight line, and the support shafts 9a and 9a are rotatably supported by the swing member 6 via bearings 9b and 9b. Further, the hanging member 9 is formed into a cylindrical column having a predetermined length,
The swing member 6 extends downward in the figure. A vibrating body 10 made of steel having a predetermined weight is fixed to the lower end of the suspension member 9 in the figure. A plurality of coil springs 11 (only one is shown in FIG. 1) are provided between the suspension member 9 and the frame 2.
A plurality of piston type dampers 12 (only one is shown in FIG. 1) are mounted.

Each piston type damper 12 is provided with a cylinder 120 fixed to the frame 2. Inside the cylinder 120, the piston 12 is provided.
2 is provided so as to be connected to the suspension member 9 and follow the swing of the suspension member 9 to reciprocate. As shown in FIG. 4, a plurality of throttle passages 122a are formed in the piston 122 so as to penetrate in parallel with the reciprocating direction. Each throttle passage 122a has a current-carrying material (electrode).
123a and 123b are fixed to each other with a predetermined gap formed therebetween. A voltage applying device 47 is connected to each of the conducting members 123a and 123b. The wiring to the voltage application device 47 shown by the chain double-dashed line in FIG. 4 is for convenience of illustration. The electrorheological fluid 200 is enclosed in the cylinder 120.

Therefore, when the building 300 on which the variable damping vibration damping device 1 described above is installed vibrates due to an earthquake, a strong wind, etc., the vibrating body 10 corresponds to the vibration of the building 300 as shown in FIG.
It swings (vibrates) vertically and horizontally. Then, the vibrating body 10
When the oscillator vibrates, the oscillator 1 responds to the oscillation of the oscillator 10.
0 is the elastic force of the coil spring 11, the damping force of the rotary vane type dampers 4 and 4, the viscous resistance cylindrical dampers 7 and 7, the piston type damper 12, and the torque generators 5 and 5,
The arbitrary force by 8 and 8 acts, and the shaking of the building 300 is suppressed.

At this time, the vibrating body 10 is swung in the vertical direction in FIG. 2 via the support shafts 9a, 9a.
Integrally with the rocking member 6, the rotation is performed with respect to the rocking member 6.
In the left-right direction of FIG. 2, via the support shafts 6a, 6a,
The supporting members 3, 3 are integrally formed with the swinging member 6 and the hanging member 9.
It is performed in the form of rotating with respect to. That is, the vibrating body 10 is
Since it swings together with the hanging member 9 around the intersection O between the centerlines of the support shafts 6a, 6a and the centerlines of the support shafts 9a, 9a at a position away from the intersection O in the downward direction of FIG. Even if the moving amount of the vibrating body 10 at a position distant from O is large, the moving amount of the portion in the vicinity of the intersection O of the suspension member 9 is extremely small. The rotary vane type dampers 4, 4, the torque generators 5, 5, the viscous resistance cylindrical dampers 7, 7, and the torque generators 8, 8 are respectively supported by the support members 3, 3 and the swinging member 6. It is arranged around the intersection O. Therefore, the rotor blade type dampers 4, 4, the torque generators 5, 5,
Viscous resistance cylindrical damper 7,7, torque generator 8,8
Without interfering with the vibrating body 10 or the hanging member 9,
Since it can be arranged close to the vibrating body 10 side (intersection point O), the variable damping vibration damping device 1 can be downsized,
It can be installed in a relatively narrow space.

In the vertical direction of FIG. 2, the motion is transmitted to the vibrating body 10 by swinging the vibrating body 10 and the suspension member 9 and rotating the torque generators 8 and 8 through the support shafts 9a and 9a. The rotation of the members 81, 81 and the viscous resistance cylinders 72, 72 of the viscous resistance cylindrical damper 7, 7 is transmitted to each other. In addition, regarding the horizontal direction in FIG.
Swinging of the vibrating body 10, the suspension member 9, and the swinging member 6 and the rotating member 5 of the torque generators 5 and 5 via the support shafts 6a and 6a.
1, 51 and rotor blades 42, 4 of rotor blade type dampers 4, 4
The two rotations are transmitted to each other. Therefore, in the variable damping / damping device 1, since the vibrating body 10, the suspension member 9, the swinging member 6 and the like swing, there is no need for mutual conversion between linear motion and rotary motion, that is, a wire or a ball screw. It is possible to reduce the size of the variable damping vibration damping device 1 and to install the variable damping vibration damping device 1 in a relatively narrow space.

Further, since each torque generator 8 and each viscous resistance cylindrical damper 7 are arranged on the rocking member 6, the vibrating body 10 and the hanging member 9 with respect to the rocking member 6 in the vertical direction in FIG. Rocking, rotating member 81 and viscous resistance cylinder 7
Two rotations can be easily transmitted to each other, and the support shaft 9a and the rotating member 81 and the rotating shaft 72a can be integrated (directly connected) as described above. Further, since the torque generators 5 and the rotary vane type dampers 4 are arranged on the support member 3, the vibrating body 10, the suspension member 9 and the swinging member 6 in the horizontal direction in FIG. The swinging and the rotation of the rotary member 51 and the rotary blade 42 can be easily transmitted to each other, and the support shaft 6a and the rotary member 5 can be transmitted as described above.
1 and the rotary shaft 42a can be integrated (directly connected).

When motion (force) is transmitted by a wire or the like, there is a possibility that a delay may occur due to slippage, extension, etc. However, in the variable damping vibration damping device 1, the suspension member 9 and the support shaft 9a are used. , 9a, swing member 6, support shaft 6a,
By using a member having high rigidity such as 6a, motion can be surely transmitted without causing a delay.
The vibration of can be suppressed suitably.

The damping force of each rotor blade damper 4 or each viscous resistance cylindrical damper 7 is generated when the rotor blade 42 or viscous resistance cylinder 72 rotates and receives the resistance of the electrorheological fluid 200. That is, in the rotary vane damper 4, when the rotary vanes 42 rotate, the electrorheological fluid 200 is pushed by the flat plates 42b, 42b,
Since it flows through the gap between the flat plates 42b, 42b and the inner peripheral surface of the casing 40 or the gap between the rotary shaft 42a and the partition walls 40b, 40b, a large viscous resistance acts on the rotary blade 42. On the other hand, in the viscous resistance cylindrical damper 7, when the viscous resistance cylinder 72 rotates, a viscous resistance is generated between the alternately arranged cylindrical current-carrying materials 71a, 71b, 73a, 73b. A large viscous resistance acts on 72 as a whole. Therefore, by the relatively small rotary blade damper 4 or the viscous resistance cylindrical damper 7,
A relatively large damping force can be generated.

Further, the damping force of each rotary vane type damper 4, each viscous resistance cylindrical damper 7 and each piston type damper 12 is adjusted to an optimum value by adjusting the viscosity of the electrorheological fluid 200. That is, the voltage applying device 4
7, current-carrying materials 41a, 41b, 43a, 43b, 71a,
By appropriately adjusting the voltage applied to the electrorheological fluid 200 in the casings 40, 70 and the piston 120 via 71b, 73a, 73b, 123a, 123b, the viscosity of the electrorheological fluid 200 can be changed. The damping forces of the rotary vane type damper 4, the viscous resistance cylindrical type damper 7 and the piston type damper 12 can be easily adjusted. Further, the vibration state of the building 300 is detected by a sensor or the like, and the casings 40, 70 and the piston 12 are detected according to the vibration states of the building 300 and the vibrating body 10.
By appropriately adjusting the voltage applied to the electrorheological fluid 200 in 0, the damping forces of the rotary vane type damper 4, the viscous resistance cylindrical type damper 7 and the piston type damper 12 can be instantaneously adjusted.

The force generated by each torque generator 5, 8 is
It is generated when the rotating members 51 and 81 receive electromagnetic force from the fixed members 50 and 80. That is, the vibration state of the building 300 and the vibrating body 10 is detected by a sensor or the like, and the building 3
00 and the vibration state of the vibrating body 10, the fixing member 50,
When a voltage is applied to the electromagnets on the 80 and the rotating members 51, 81, an electromagnetic force acts between the fixed members 50, 80 and the rotating members 51, 81. Therefore, in the torque generators 5 and 8, it is possible to generate torque of any magnitude and direction at any time without depending on the motion state of the vibrator 10, so that the force acting on the vibrator 10 can be reduced. It can be freely controlled, and the vibration of the building 300 can be appropriately suppressed.

Although the variable damping vibration damping device 1 has been described above, the variable damping vibration damping device 1 is an embodiment of the present invention, and the present invention is not limited to this, and the constituent elements are appropriately changed. You may. For example, in the variable damping / damping device 1, the rotary shaft 42a, the rotary member 51, the support shaft 6a,
The rotary shaft 72a, the rotary member 81, and the support shaft 9a are integrated (directly connected), but may be configured to separately transmit the motion (force). Further, a gear or the like may be interposed so as to accelerate and decelerate and transmit the signal.
As shown in, the transmission may be performed via the gear 6g fixed to the support shaft 6a and the gear 51g fixed to the rotating member 51. In the variable damping vibration damping device 1,
Although the rotary vane type damper 4 and the viscous resistance type damper 7 are applied in combination, this is for convenience of description, and only one of them may be selected and applied based on the usage conditions. Moreover, in the variable damping vibration damping device 1,
Although the vibration of the vibrating body 10 in the vertical direction and the horizontal direction in FIG. 2 is controlled, the vibration may be controlled in only one direction.

[0034]

According to the first aspect of the present invention, the vibrating body is suspended and swingably supported by the suspension supporting means, and the arbitrary torque generating means and the electrorheological fluid damper are provided. Since it is arranged around the center of vibration, the vibrating body swings at a position below the arbitrary torque generating means and the electrorheological fluid damper when the building vibrates. Therefore, the arbitrary torque generating means and the electrorheological fluid damper can be arranged close to the vibrating body side (vibration center) without interfering with the vibrating body, so that the variable damping vibration damping device is relatively small-sized. It can be installed in a small space. Further, since the oscillation of the vibrating body and the rotation of each rotating member of the electro-rheological fluid damper and the arbitrary torque generating means are mutually transmitted through the motion transmitting means, it is necessary to convert the linear motion and the rotary motion to each other. Therefore, since a member such as a wire or a ball screw to be arranged in the horizontal direction is not required, the variable damping vibration damping device can be configured in a relatively small size and can be installed in a narrow space. Further, since the force acting on the vibrating body can be freely controlled via the arbitrary torque generating means, it is possible to suitably suppress the vibration of the building.

According to the second aspect of the invention, the vibrating body is suspended and swingably supported through the suspending member, the first supporting member and the second supporting member, and the arbitrary torque generating means is provided. And the electrorheological fluid dampers are arranged on the first support member and the second support member, respectively,
When the building vibrates, the suspension member swings together with the vibrating body with respect to the first support member, the arbitrary torque generating means and the electrorheological fluid damper disposed on the first support member, and The first support member swings with respect to the second support member and the arbitrary torque generating means and the electrorheological fluid damper arranged on the second support member.
Therefore, the suspension member, the first support member, the second support member,
Arbitrary torque generation means and electrorheological fluid type damper,
It can be placed closest to the vibrating body side without interfering with the vibrating body. Further, the swing of the suspension member and the rotation of each rotating member of the electrorheological fluid damper arranged on the first supporting member are transmitted to each other via the first motion transmitting member. , The mutual transmission of the swing of the first support member and the rotation of each rotary member of the electrorheological fluid damper and the arbitrary torque generating means arranged on the second support member via the second motion transmission member. Therefore, the oscillation of the vibrating body and the rotation of each rotating member of the arbitrary torque generating means and the electrorheological fluid damper can be easily transmitted to each other. That is, according to the invention of claim 2,
The effects of the invention described in claim 1 can be suitably achieved.

According to the third aspect of the invention, since the electrorheological fluid in the container is caused to flow through the pushing portion and the flow of the electrorheological fluid is restricted through the partition wall, the electrorheological fluid type A large viscous resistance can be applied to the rotating member of the damper. Therefore, in addition to the effect of the invention described in claim 1 or claim 2, a relatively large damping force can be generated by the relatively small electrorheological fluid damper.

According to the fourth aspect of the present invention, since viscous resistance is generated between the electrodes arranged alternately, a large viscous resistance can be applied to the rotating member of the electrorheological fluid damper as a whole. Therefore, in addition to the effect of the invention described in claim 1 or claim 2, a large damping force can be generated by the relatively small electrorheological fluid damper.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a variable damping and damping device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line BB of the variable damping vibration damper shown in FIG.

FIG. 3 is a cross-sectional view of the rotary vane damper of the variable damping vibration damper shown in FIG. 2, taken along the line C-C.

FIG. 4 is an enlarged cross-sectional view of a piston damper of the variable damping vibration damper shown in FIG.

5 is a cross-sectional view taken along the line EE of the torque generator of the variable damping vibration damper shown in FIG.

FIG. 6 is a cross-sectional view showing another example of the connection structure between the rotating member of the torque generator shown in FIG. 5 and the support shaft of the swinging member.

[Explanation of symbols]

1 Variable Damping and Damping Device 2 Suspension Support Means, Second Support Member (Frame) 3 Suspension Support Means, Second Support Member (Support Member) 4 Electrorheological Fluid Damper (Rotary Blade Damper) 40 Container (Casing) 40b Partition walls 41a, 41b Voltage applying means (energizing material) 42 Rotating member (rotary blade) 42b Pushing part (flat plate) 43a, 43b Voltage applying means (energizing material) 47 Voltage applying means (voltage applying device) 5 Arbitrary Torque generating means (torque generator) 51 Rotating member 6 Suspension supporting means, first supporting member, motion transmitting means (oscillating member) 6a Motion transmitting means, second motion transmitting member (supporting shaft) 7 Electrorheological fluid Type damper (viscous resistance cylindrical damper) 70 Container (casing) 71a, 71b Voltage applying means, electrode (energizing material) 72 Rotating member (viscous resistance cylinder) 73a, 73b Voltage mark Means, electrodes (current-carrying materials) 8 Arbitrary torque generating means (torque generator) 81 Rotating member 9 Suspension supporting means, suspending member, motion transmitting means 9a Motion transmitting means, first motion transmitting member (supporting shaft) 10 Vibration Body O Swing center (intersection) 11 Elastic means (coil spring) 200 Electrorheological fluid 300 Building

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshi Yamada 2-10-10 Fujimi, Chiyoda-ku, Tokyo Maeda Construction Industry Co., Ltd. (72) Toshio Fujioka 2-1026 Fujimi, Chiyoda-ku, Tokyo Maeda Construction Industry Co., Ltd.

Claims (4)

[Claims] 1. A vibrating body that vibrates according to the vibration of a building,
An electrorheological fluid type having a container in which the electrorheological fluid is enclosed, a voltage applying means for applying a voltage to the electrorheological fluid, and a rotating member arranged in the container and rotating in association with the vibration of the vibrating body. A variable damping vibration damping device comprising a damper and elastic means that elastically deforms in response to vibration of the vibrating body, wherein a suspension supporting means for suspending and vibrating the vibrating body is provided, and an arbitrary torque is provided. Arbitrary torque generating means having a rotating member that can act, is provided around the swing center of the vibrating body, the electrorheological fluid damper is arranged around the swing center of the vibrating body, Motion transmitting means is provided for connecting the rotating members of the arbitrary torque generating means and the electrorheological fluid damper to the vibrating body, and for mutually transmitting the rotation of each rotating member and the swing of the vibrating body. Special Variable damping vibration damping device. 2. A suspension member for suspending the vibrating body, a first support member for swingably supporting the suspension member, and a swing for the first support member as the suspension support means. A second supporting member that freely supports, and the arbitrary torque generating means and the electrorheological fluid damper are arranged on the first supporting member and the second supporting member, respectively, and the motion transmitting means is provided. As each of the rotating members of the arbitrary torque generating means and the electrorheological fluid damper arranged on the first supporting member, and the hanging member, the rotating member rotates and the hanging member swings. A first motion transmitting member for mutually transmitting motion and each rotating member of the arbitrary torque generating means and the electrorheological fluid damper arranged on the second supporting member are connected to the first supporting member. The rotation of each rotating member Serial variable damping vibration damping device according to claim 1, characterized in that a second motion transmitting member for transmitting the swing of the first support member to each other. 3. A container for the electrorheological fluid damper,
The partition wall for dividing the internal space to limit the flow of the electrorheological fluid is provided, and the rotating member of the electrorheological fluid damper is provided with a pushing portion for pushing the electrorheological fluid.
Alternatively, the variable damping vibration damping device according to claim 2. 4. The variable damping according to claim 1, wherein a plurality of plate-shaped electrodes are alternately arranged on the container and the rotating member of the electrorheological fluid damper. Vibration control device.