JP2002213528A - Damping damper device - Google Patents

Abstract

(57) [Problem] To use a viscoelastic material having a material property that has a large damping property and is easy to relieve stress, and that viscoelasticity is applied even under a condition where a compressive load or a deformation force in a direction different from a predetermined shear direction is applied. A shear thickness of a body is ensured, and a predetermined damping performance can be maximized by preventing the occurrence of permanent strain. SOLUTION: A viscoelastic body 3, 3 is provided between opposing surfaces of two outer steel plates 11 arranged in parallel at a distance from each other and an inner steel plate 2 arranged in parallel at an intermediate position therebetween. The inner and outer steel plates 2, which are sandwiched in layers and excluding the sandwiched layers of the viscoelastic bodies 3, 3,
Rolling type spacers 4 for maintaining the thickness of the viscoelastic bodies 3 and 3 between the opposing surfaces of the rollers 1 and 1 so as to keep the layer thickness constant.
4 are interposed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration damper device, and more particularly to a vibration damper for a building, such as a building, which is subjected to an interlayer displacement force, such as a wind pressure or an earthquake, by absorbing the vibration energy thereof. And to attenuate vibration
The present invention relates to a damping device that is used by being incorporated as a brace, a brace or a damping wall in a structural frame of an existing or newly-built building.

[0002]

2. Description of the Related Art A general vibration damper of this kind is
For example, as shown in FIGS. 13 and 14, two outer rigid plate members such as a steel plate plate that can be joined to one of opposing portions of a structural skeleton composed of columns and beams and that are arranged in parallel at a distance from each other 1, 1 and an inner rigid plate material 2 such as a single steel plate plate, which can be joined to the other of the opposing parts of the structural frame and is arranged in parallel with the two outer rigid plate materials 1, 1 at an intermediate position between them. Energy absorbing members 3 and 3 such as viscoelastic bodies are interposed between layers facing each other, and when an interlayer displacement occurs in the structural frame due to an earthquake or the like, both the inner and outer rigid plate members 1, 1, and 2 are provided. Is relatively displaced in the directions of arrows a and b in FIG. 13 so that the displacement (amplitude) energy is absorbed by the shear deformation of the energy absorbing materials 3 and 3 to attenuate the swinging motion and vibration of the building. Have been.

[0003]

By the way, a viscoelastic material is frequently used as an energy absorbing material in this type of vibration damper. In order to maximize the original vibration damping performance, the viscoelasticity of existing viscoelastic materials is used in the vibration damper device configured to exhibit the damping function by utilizing the shear deformation characteristics of this viscoelastic body. A viscoelastic body having the material property having the largest damping property among the body materials is selected and used. However, when using a material having a large damping property as the viscoelastic bodies 3 and 3, the larger the damping property is, the easier the stress is to be relaxed, and the direction different from the shear deformation direction when no load is applied to the damper device, that is, When a compressive load is applied for a long time in the thickness direction of the viscoelastic bodies 3 and 3, the viscoelastic bodies 3 and 3 relax the stress and reduce the shear thickness or cause permanent deformation. In addition, even when a load such as a large earthquake is applied, the inner and outer rigid plate members 1, 1, and 2 are not displaced relative to each other in the parallel posture, and FIG.
As shown in FIG. 6, when the viscoelastic bodies 3 and 3 are relatively displaced in the directions inclined with respect to each other and the deformation force in the predetermined shearing direction does not act on the viscoelastic bodies 3 and 3, the energy absorption performance originally possessed by the viscoelastic bodies 3 and 3 is sufficiently improved. Therefore, there is a problem that it is not possible to maintain the damping performance of the vibration damper device to the maximum.

[0004] The present invention has been made in view of the above-described circumstances, and even when a viscoelastic material having material characteristics that easily relieve stress is used as an energy absorbing material, it has a large damping property. And the shearing thickness of the energy absorbing material can be ensured even under conditions in which a deformation force or the like in a direction different from the predetermined shearing direction is applied, and the occurrence of permanent strain can be prevented to maximize the predetermined damping performance. It is intended to provide a vibration damper device.

[0005]

According to a first aspect of the present invention, there is provided a vibration damper device according to the first aspect of the present invention, wherein a first rigid plate member and a second rigid plate member are arranged in parallel at a distance from each other. In a vibration damper device comprising a plate material and an energy absorbing material sandwiched between opposing surfaces of the first and second rigid plate materials, at least the above-mentioned A plurality of rolling spacers having a small frictional resistance in a plurality of locations other than the sandwiched location of the energy absorbing material in a state where the energy absorbing material is allowed to undergo shear deformation over a predetermined range when the first and second rigid plate materials are relatively displaced. Is interposed.

According to a second aspect of the present invention, there is provided a vibration damper device including a plurality of first rigid plate members arranged in parallel with a space therebetween, and an adjacent one of the plurality of first rigid plate members. At least one second rigid plate disposed at an intermediate position between the first rigid plates in parallel with the first rigid plate, and an even number of the second rigid plates formed by the first rigid plate and the second rigid plate. In a vibration damper device including an energy absorbing material interposed between opposing surfaces,
And at least a plurality of locations except for the sandwiched layer of the energy absorbing material between the even number of opposing surfaces formed by the second rigid plate and a predetermined range of the energy absorbing material when the first and second rigid plates are relatively displaced. And a rolling-type spacing spacer having a small frictional resistance is interposed in a state in which the shear deformation is allowed to occur.

According to the first and second aspects of the present invention, even when used under the condition that a compressive load is applied in the thickness direction of an energy absorbing material such as a viscoelastic body at the time of no load, the structure is The compression load is received by the spacers for maintaining the spacing to prevent the occurrence of permanent distortion, and particularly when a viscoelastic material is used as the energy absorbing material, the reduction of the shear thickness due to the stress relaxation of the viscoelastic material is prevented, and the energy absorbing material ( It is possible to keep the shear thickness of the viscoelastic body) constant over the entire intervening layer. Further, even when a load such as an earthquake is applied, the first and second rigid plate members are kept in the parallel posture by the rolling-type spacing spacers, and
Relative displacement is possible without giving extra resistance. Thereby, it is possible to stably secure the shear deformation capability of the energy absorbing material, that is, the original energy absorbing performance, and maximize the predetermined damping performance even after long-term use. Further, the buckling strength of each rigid plate material can be increased by the presence of the spacer for maintaining the spacing, and each rigid plate material can be made thin to reduce the weight and cost of the entire damper device.

[0008] As a rolling spacer in the vibration damper device having the above configuration, either a hard ball or a bearing may be used, and such a spacer may be used as an energy absorbing material. The second rigid plate is fixed to not only a plurality of portions except for the sandwiched layer, but also to both sides in the plate width direction of the second rigid plate and both sides in the plate width direction of the first rigid plate. When a load such as an earthquake is applied by interposing also between the opposing surfaces with the side cover, the first and second rigid plate members are kept in a parallel posture without being inclined as shown in FIG. The relative displacement can be made only in the predetermined shearing deformation direction up to this point, and the damping performance can be further improved.

Further, in the vibration damper device having the above-described structure, the spacer for maintaining the space may be provided in the first and second portions corresponding to the sandwiched layer of the energy absorbing material.
By interposing at least one between the opposing surfaces of the rigid plate members, the spacer interval (distance between fulcrums = span) in the relative displacement direction of the first and second rigid plate members is shortened to reduce the buckling strength of each rigid plate member. This makes it possible to further increase the thickness of each of the rigid plate members, thereby making it possible to further reduce the weight and cost of the entire damper device, or to improve its durability.

Further, in the vibration damper device according to the second aspect of the present invention, the adjacent first rigid plate members of the plurality of first rigid plate members are connected to each other by bolts and nuts. By adopting a configuration that is fixed and held at a fixed interval via a screw member, it prevents the gap between the sandwiched layers of the energy absorbing material from expanding due to external force applied when the damper device is not loaded or when a large load is applied due to an earthquake or the like. However, it is possible to reliably prevent the shape from changing, and to maintain the predetermined damping performance more reliably and appropriately over a long period of time.

Further, in the vibration damper device having the above-described structure, all the spacers for spacing are attached to the second rigid plate side so that the spacers are attached to the inner surface of the first rigid plate member. As compared with the case, the entire damper device can be easily assembled, and the manufacturing cost can be reduced.

The energy absorbing material in the vibration damper according to any one of claims 1 to 7 may be a viscous fluid or an elastic material in addition to the viscoelastic material. It is optimal to use a viscoelastic body that has a hysteresis characteristic that stably absorbs displacements over a wide range and is effective in maintaining the performance by maintaining the shape.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a first embodiment of a brace type vibration damper device according to the second aspect of the present invention, and FIG. 2 is a front view of the brace type vibration damper device A. As shown in FIG. 5, as shown in FIG. 5, a steel column 11 and a steel beam 12 are provided at one longitudinal end of two outer steel plates (an example of a first rigid plate) 1 and 1 which are arranged in parallel with each other at an interval. Structural frame 1 consisting of
3 (consisting of a plurality of bolt holes) that can be bolted to one of the gusset plates 14 fixed to the four corners
1A is formed, and one inner steel plate (an example of a second strip-shaped rigid plate) 2 is provided at an intermediate position between the two outer steel plates 1, 1 with respect to the outer steel plates 1, 1. The one end of the inner steel plate 2 in the longitudinal direction is opposite to the side where the joint 1A of the outer steel plates 1 and 1 is located. A joint portion 2A (comprising a plurality of bolt holes) that can be bolted to one is formed.

A viscoelastic body 3, 3 which is an example of an energy absorbing material is interposed between the inner surfaces of the two outer steel plates 1, 1 and the opposing surfaces of the inner steel plate 2 in layers. These two layered viscoelastic bodies 3, 3 and two outer steel plates 1, 1 and one inner steel plate 2 are laminated in the thickness direction to form a brace type vibration damper device A. Have been.

In the vibration damper device A having the above-described basic configuration, when the inner and outer steel plates 1, 1, 2 are displaced relative to each other at a plurality of locations excluding the sandwiched layers of the viscoelastic bodies 3, 3. A place where the shear deformation of the predetermined range L, L of the elastic bodies 3, 3 is allowed, that is, both sides in the longitudinal direction of the sandwich layer of the viscoelastic bodies 3, 3 are shifted to both sides in the width direction of the steel plates 1, 1, 2. Rolling spacing spacers 4, 4 having low frictional resistance are interposed at four positions between the inner surfaces of the outer steel plate 1, 1 and the opposing surfaces of the inner steel plate 2, respectively.

Each of the above-mentioned rolling type spacers for maintaining a spacing 4,
4 is a disk-shaped ball holding member 4 fixed to both surfaces of the inner steel plate 2 as clearly shown in FIGS.
A, 4A and a hard sphere 4 such as a steel sphere, which is rotatably held by the sphere holding members 4A, 4A such that a substantially hemispherical portion is exposed.
B, 4B, and the tops of the exposed spheres of the hard spheres 4B, 4B are brought into point contact with the inner surfaces of the outer steel plates 1, 1 so that the distance between the facing surfaces of the inner and outer steel plates 2, 1, 1, that is, the viscosity, The shear thicknesses t, t of the elastic bodies 3, 3 are kept constant, and the frictional resistance at the time of relative displacement between the steel plates 2, 1, 1 is reduced. As shown in FIG. 4, the inner and outer annular races 4C, 4
A bearing 4F in which a plurality of hard balls 4E such as steel balls are interposed between D may be used.

As shown in FIG. 5, the vibration damper device A according to the first embodiment configured as described above has the joints 1A and 2A at both ends in the longitudinal direction positioned diagonally in the structural frame 13. Each of the gusset plates 14, 14 is bolted to the gusset plates 14, 14, and is used as a brace for seismic reinforcement of the structural frame 13. In such a usage mode, when a load such as wind force or seismic force acts on the steel columns 11 and the steel beams 12 of the structural frame 13 to cause interlayer displacement, the outer steel plate 1 and the inner steel plate 1 are displaced. 2 and the viscoelastic bodies 3 and 3 absorb the displacement energy and exert a vibration damping force.

Here, due to the existence of the above-mentioned spacers 4 and 4 for maintaining the rolling gap, a compressive load is applied in the thickness direction of the viscoelastic bodies 3 and 3 when the vibration damper A is not loaded. Even if the load is received by the spacers 4 and 4 for maintaining the spacing, it is possible to prevent permanent deformation of the viscoelastic bodies 3 and 3 and to prevent the shear thicknesses t and t from decreasing due to stress relaxation. The shear thickness t of the viscoelastic bodies 3, 3
It is possible to keep t constant throughout its intervening layer.

Also, when a load such as an earthquake is applied,
The inner and outer steel plates 2, 1, 1 are kept in a parallel posture by the rolling spacers 4, 4 so as to be smoothly displaced relatively without a large frictional resistance being applied. Thereby, the viscoelastic body 3,
3. The shear deformation capacity of the viscoelastic body 3, that is, the energy absorption performance originally possessed by the viscoelastic bodies 3, 3 is ensured in a stable manner, and the predetermined damping performance of the vibration damper device A is maximized even after long-term use. Is possible.

Further, since the buckling strength of each of the steel plates 2, 1, 1 is increased by the presence of the spacers 4, 4, the damper device is formed by using thin plates as the steel plates 2, 1, 1. It is possible to reduce the weight and cost of A as a whole or to improve durability.

Further, by adopting a configuration in which the spacing spacers 4, 4 are attached (fixed) to the inner steel plate 2, the spacers 4, 4 are attached to the inner surfaces of the two outer steel plates 1, 1. In comparison, assembling of the entire damper device A becomes easy, and the manufacturing cost can be reduced.

FIG. 6 is a front view showing a second embodiment of the brace type vibration damper device A according to the second aspect of the present invention. The vibration damper device A according to the second embodiment is shown in FIG.
Is a freely rotating hard ball 4B, 4B or bearing 4
Rolling spacers 4 and 4 using F and 4F
Are attached to both sides in the width direction of the inner steel plate 2,
The tops of these spacers 4, 4 are connected to the outer steel plate 1,
The first and second side covers 1 and 6 are also configured to be in point contact with the inner surfaces of the side covers 6 and 6 which are integrally fixed to both sides in the width direction of the sheet. Other configurations are the same as those of the vibration damper device A of the first embodiment. Therefore, the same reference numerals are given to the corresponding portions, and description thereof is omitted.

In the vibration damper device A according to the second embodiment, when a load such as an earthquake is applied, the inner and outer steel plates 2, 1, 1 are tilted as shown in FIGS. It is possible to make relative displacement only in the shear deformation direction of the viscoelastic bodies 3 and 3 without maintaining the parallel posture, and maintain a constant deformation capacity without lowering the deformation capacity of the viscoelastic bodies 3 and 3. Thus, the damping performance of the entire damper device A can be further improved.

FIG. 7 is a side view showing a third embodiment of a brace type vibration damper device A according to the second aspect of the present invention. The vibration damper device A according to the third embodiment is shown in FIG.
Then, the freely rotating hard ball 4B, 4B or the bearing 4
Rolling spacers 4 and 4 using F and 4F
Is also interposed between the opposing surfaces of the inner and outer steel plate plates 2, 1, 1 at locations corresponding to the sandwiched layers of the viscoelastic bodies 3, 3. Other configurations are the same as those of the vibration damper device A of the first embodiment, and therefore, the same reference numerals are given to the corresponding portions, and description thereof is omitted.

In the vibration damper A according to the third embodiment, the spacers 4, 4 in the relative displacement direction of the inner and outer steel plates 2, 1, 1 are reduced in distance l, l (distance between fulcrums = span). This makes it possible to further increase the buckling strength of each of the steel plates 2, 1, 1, thereby making each of the steel plates 2, 1, 1 thinner, further reducing the weight and cost of the entire damper device A, Alternatively, the durability can be improved.

FIGS. 8 and 9 are a side view and a front view, respectively, showing a fourth embodiment of a brace type vibration damper device A according to the second aspect of the present invention. The damper device A is the same as the vibration damper device A of the third embodiment described above, except that the two outer steel plate plates 1, 1 are fixed via bolts 7, 7, and nuts 8, 8, which are an example of a screw member. It is configured to be fixedly held at intervals. Other configurations are the same as those of the vibration damper device A of the third embodiment, and therefore, the same reference numerals are given to the corresponding portions, and description thereof is omitted.

In the vibration damper device A according to the fourth embodiment, the interval between the sandwiched layers of the viscoelastic bodies 3 and 3, that is, the viscoelasticity due to the external force applied when there is no load or when a large load acts due to an earthquake or the like. In addition to preventing the shear thicknesses t, t of the bodies 3, 3 from decreasing, the shear thicknesses t, t are also prevented from expanding, so that the performance degradation accompanying the shape change of the viscoelastic bodies 3, 3 is reliably prevented, and the entire damper device A is provided. The damping performance can be more reliably and appropriately maintained for a long period of time.

In addition to using the bolt 7 and the nut 8 as the screw member, it is also possible to use a so-called double-sided screw in which a male screw portion is machined on the entire length or both ends, and a nut that can be screwed to both ends. Alternatively, a bolt and a female screw obtained by tapping one outer steel plate 1 may be used. Furthermore, the configuration in which the distance between the two outer steel plate plates 1 and 1 is fixed and held constant via these screw members may be applied to the vibration damper devices of the first and second embodiments. It is possible to achieve the same effects as described above.

FIGS. 10 and 11 are a side view and a front view showing a brace type vibration damper device A 'according to a first embodiment of the present invention. The vibration damper device A ′ is provided as an energy absorbing material between the opposing surfaces of the steel plates 1 and 2 (an example of the first rigid plate and the second rigid plate), which are arranged in parallel at a distance from each other. The basic configuration is that a single viscoelastic body 3 is sandwiched in a layered manner. 3 (a) and 3 (b) in a state where the shear deformation of the predetermined range L of the viscoelastic body 3 is allowed when the steel plates 1 and 2 are displaced relative to each other, similarly to the first embodiment. Rolling with low frictional resistance such as a hard ball 4B such as a steel ball or a bearing 4F shown in FIG. It is configured by interposing a spacer 4 for maintaining the interval.

FIG. 12 is a front view showing a second embodiment of the stud type damping device A 'according to the first aspect of the present invention. Each of the steel plates 1 and 2 disposed in parallel with each other has a shorter and wider shape than that of the brace type, and the spacer 4 for the rolling-type spacing is formed by each of the steel plates 1 and 2. Are arranged in two rows in the short side direction, and three or more spacers 4 are arranged at equal intervals in each row, and a total of six or more spacers 4 are provided between the opposing surfaces of both steel plate 1 and 2.
Is different from that of the first embodiment in the first aspect of the present invention. Other configurations are the same as those of the first embodiment of the first aspect of the present invention, and the same reference numerals are given to the corresponding portions, and the description thereof is omitted.

The brace type vibration damper device A 'according to the first embodiment of the present invention and the stud type vibration damper device A' according to the second embodiment of the present invention.
Is different from each of the embodiments according to the second aspect of the present invention in that the viscoelastic body 3 is a single layer, but the shear thickness of the viscoelastic body 3 is constant due to the existence of the spacer 4 for keeping the rolling distance. The holding effect and the effect of increasing the buckling strength of the steel plates 1 and 2 are exactly the same as those of the other embodiments.

In each of the above embodiments, the configuration in the case where the present invention is applied to a brace type or stud type damping device is described in detail. The same vibration damping performance can be achieved by applying the present invention.

[0033]

As described above, according to the first and second aspects of the present invention, even when the energy absorbing material is used under the condition that a compressive load is applied in the thickness direction of the energy absorbing material when no load is applied,
When the compressive load is received by the spacer for maintaining the interval, permanent deformation of the energy absorbing material is generated, and when a viscoelastic material is used as the energy absorbing material, a reduction in the shear thickness due to stress relaxation of the viscoelastic material is prevented. In the case of using a viscoelastic body having a large material property, the shear thickness of the viscoelastic body can be kept constant over the entire area of the sandwiched layer, and even if a load such as an earthquake is applied, the viscoelastic body rolls. The first and second rigid plate members can be smoothly displaced relative to each other without giving extra frictional resistance while maintaining the parallel posture by the spacer for maintaining the distance between the first and second rigid plates. Therefore, the shear deformation capacity of energy absorbing materials such as viscoelastic materials,
That is, the original energy absorption performance can be ensured with good stability, and the predetermined damping performance can be maximized even after long-term use. In addition, the buckling strength of each rigid plate can be increased by the presence of the spacer for maintaining the spacing, so that each rigid plate can be made thinner to reduce the weight and cost of the entire damper device.

In addition, by adopting the structure as described in claim 4, even when a load such as an earthquake is applied, the first and second rigid plate members do not assume the inclined posture, but maintain the parallel posture. Relative displacement can be performed only in the direction of shear deformation of the energy absorbing material, and the damping performance can be further improved.

Further, by adopting the configuration as described in claim 5, the spacer interval (distance between fulcrums = span) in the relative displacement direction of the first and second rigid plate members is shortened, and The buckling strength can be further increased, whereby the rigid plate members can be made thinner to further reduce the weight and cost of the entire damper device, or to improve its durability.

Further, by adopting the configuration as described in claim 6, it is possible to prevent the gap between the sandwiched layers of the energy absorbing material from being widened by an external force applied when the damper device is not loaded or when it is actually loaded. In addition, the shape of the energy absorbing material can be more reliably maintained, and the predetermined vibration damper performance can be more reliably maintained over a long period of time.

Further, by adopting the structure as described in claim 7, as compared with the case where the spacer is attached to the inner surface of the first rigid plate, the entire damper device can be easily assembled, and the production cost can be reduced. be able to.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of a brace type vibration damper according to the invention of claim 2;

FIG. 2 is a front view of the brace type vibration damper device.

FIGS. 3 (a) and 3 (b) are an enlarged side view and an enlarged front view showing an example of a spacer used in a brace type vibration damper device of the above.

FIG. 4 is an enlarged side view showing another example of the spacer used in the brace type vibration damper of the above.

FIG. 5 is a front view showing a use state of the vibration damper device.

FIG. 6 is a front view showing a second embodiment of a brace type vibration damper according to the second aspect of the present invention.

FIG. 7 is a side view showing a third embodiment of the brace type vibration damper according to the second aspect of the present invention.

FIG. 8 is a side view showing a fourth embodiment of the brace type vibration damper according to the second aspect of the present invention.

FIG. 9 is a front view of the brace type vibration damper device.

FIG. 10 is a side view showing a first embodiment of a brace type vibration damper according to the first aspect of the present invention.

FIG. 11 is a front view of the brace type vibration damper device.

FIG. 12 is a front view showing a stud type vibration damper device according to a second embodiment of the present invention.

FIG. 13 is a side view showing a conventional brace type vibration damper device.

FIG. 14 is a front view showing a conventional brace type vibration damper device.

FIG. 15 is a side view for explaining one of the problems of the conventional brace type vibration damper.

FIG. 16 is a front view for explaining another problem of the conventional brace type vibration damper.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 outer steel plate (an example of a first rigid plate) 2 inner steel plate (an example of a second rigid plate) 3 viscoelastic body (an example of an energy absorbing material) 4 spacer for rolling-type spacing 4 B hard ball 4F bearing 6 side cover 7 Bolt (an example of a screw member) A Vibration damper device according to the invention of claim 2 A ′ Vibration damper device according to the invention of claim 1

Claims (8)

[Claims] 1. A first rigid plate, a second rigid plate, and an energy absorbing member sandwiched between opposing surfaces of the first and second rigid plates, which are arranged in parallel at a distance from each other. In the vibration damper device provided with the first and second rigid plate members, at least a plurality of portions except for a sandwiched layer of the energy absorbing material are provided between the opposing surfaces of the first and second rigid plate members.
A damping device having a rolling-type spacing spacer having a small frictional resistance in a state where the energy absorbing material is allowed to undergo a shear deformation over a predetermined range when the second rigid plate material is relatively displaced. 2. A plurality of first rigid plate members arranged in parallel at a distance from each other, and said first rigid plate members are located at intermediate positions between adjacent first rigid plate members among the plurality of first rigid plate members. At least one second sheet disposed parallel to the plate material;
A vibration damper device comprising: a rigid plate member; and an energy absorbing member sandwiched between an even number of opposing surfaces formed by the first rigid plate member and the second rigid plate member. Between the even number of opposing surfaces formed of the two rigid plate members, at least at a plurality of locations except for the sandwiching layer of the energy absorbing member, a predetermined range of the energy absorbing member is provided when the first and second rigid plate members are relatively displaced. A vibration damper device, characterized in that a rolling-type spacing spacer having low frictional resistance is interposed in a state where shear deformation is allowed. 3. The spacer for keeping a rolling distance,
The damping device according to claim 1, which is a hard ball or a bearing. 4. The rolling type spacer for maintaining a distance,
3. The device according to claim 1, wherein the second rigid plate is interposed between opposing surfaces of both side portions of the first rigid plate in the plate width direction and side covers fixed to both side portions of the first rigid plate in the plate width direction. 4. Vibration damper device. 5. The spacer according to claim 1, wherein at least one of the spacing spacers is interposed between the opposing surfaces of the first and second rigid plate members at a position corresponding to the sandwiched layer of the energy absorbing material. 4. The vibration damper device according to 1. 6. The plurality of first rigid plate members are configured such that adjacent first rigid plate members are fixedly held at regular intervals via screw members. The described damping device. 7. The damping device according to claim 1, wherein all of the spacers for maintaining a distance are attached to the second rigid plate. 8. The energy absorbing material is selected from a viscoelastic material, a viscous fluid, and an elastic material.
8. The vibration damper according to any one of claims 7 to 7.