JP2021095921A - Buffer and attachment structure of buffer - Google Patents

Abstract

To provide a buffer which enables improvement of design flexibility, and to provide an attachment structure of the buffer.SOLUTION: A buffer 1 of the invention is provided in at least one of a side wall and a portion, which are disposed facing each other, of a building. The buffer includes a buffer body part. The buffer body part includes disc springs arranged in an axial direction of the buffer body part; and a viscoelastic body layer disposed between the two disc springs located adjacent to each other in the axial direction.SELECTED DRAWING: Figure 2

Description

The present invention relates to a shock absorber and a mounting structure of the shock absorber.

Conventionally, a cushioning body (shock absorbing member) provided on at least one of a side wall and a retaining wall of a building and formed of rubber is known (for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2014-77229

However, the above-mentioned shock absorber has a low degree of freedom in design, and therefore, there are few types of earthquakes that can absorb energy.

An object of the present invention is to provide a shock absorber and a structure for mounting the shock absorber, which can increase the degree of freedom in design.

The buffer of the present invention is
A cushioning body provided on at least one of a side wall and a part of a building arranged opposite to each other.
Equipped with a buffer body
The buffer body is
A plurality of disc springs arranged in the axial direction of the buffer body, and
A viscoelastic body layer arranged between the two disc springs adjacent to each other in the axial direction,
Have.
According to the buffer of the present invention, the degree of freedom in design can be increased.

In the buffer of the present invention
It is preferable that a reinforcing material is embedded inside the viscoelastic body layer.
This makes it possible to absorb the energy of the earthquake more effectively.

In the buffer of the present invention
The buffer body portion has at least two viscoelastic body layers.
The at least two viscoelastic body layers are respectively arranged between the two disc springs adjacent to each other in the axial direction.
The at least two viscoelastic body layers may have non-uniform layer thicknesses.
In this case, the degree of freedom in design can be further increased.

The buffer of the present invention is
With more regulatory departments
The regulatory department
A pair of contact members or contact members that are applied to the disc spring and the viscoelastic body layer that form at least a part of the buffer body from both sides in the axial direction.
A contact member, which is applied to the disc spring and the viscoelastic body layer constituting the entire buffer body portion from the side of the side wall and the portion opposite to the side to which the buffer is attached, is applied. It is preferable to have it.
As a result, it is possible to prevent the disc spring and the viscoelastic body layer from separating from each other.

In the buffer of the present invention
It is preferable that at least one viscoelastic body layer is maintained in a state of being compressed in the axial direction by the regulating portion.
This makes it possible to absorb the energy of the earthquake more effectively.

The mounting structure of the shock absorber of the present invention is
The buffers are attached to at least one of the side walls and parts of the building facing each other.
According to the mounting structure of the shock absorber of the present invention, the degree of freedom in design can be increased.

In the mounting structure of the shock absorber of the present invention,
The shock absorber may be attached to only one of the side wall and the portion, and may be separated and opposed to the other of the side wall and the portion.

According to the present invention, it is possible to provide a shock absorber and a mounting structure of the shock absorber, which can increase the degree of freedom in design.

It is the schematic which shows the state which the shock absorber according to one Embodiment of this invention was attached to the retaining wall in the initial state. It is an axial sectional view which shows the shock absorber of FIG. 1 in the initial state. In the example of FIG. 1, it is a schematic view which shows the state when the side wall of a building collides with a retaining wall through a cushioning body. It is an axial sectional view which shows the shock absorber compressed in the state of FIG. 3 by the same cross section as FIG. It is an axial sectional view which shows the shock absorber which concerns on the 1st modification of this invention in the state at the time of compression. It is an axial sectional view which shows the shock absorber which concerns on the 2nd modification of this invention in the state at the time of compression. FIG. 5 is an axial sectional view showing a shock absorber according to a third modification of the present invention in an initial state. FIG. 7 is an axial cross-sectional view showing the shock absorber of FIG. 7 in a compressed state. FIG. 5 is an axial sectional view showing a shock absorber according to a fourth modification of the present invention in an initial state. FIG. 5 is an axial sectional view showing a shock absorber according to a fifth modification of the present invention in an initial state. FIG. 10 is an axial cross-sectional view showing the shock absorber of FIG. 10 in a compressed state. FIG. 5 is an axial sectional view showing a shock absorber according to a sixth modification of the present invention in an initial state. FIG. 5 is an axial sectional view showing a shock absorber according to a seventh modification of the present invention in an initial state. FIG. 5 is an axial sectional view showing a shock absorber according to an eighth modification of the present invention in an initial state. FIG. 5 is an axial sectional view showing a shock absorber according to a ninth modification of the present invention in an initial state. FIG. 5 is an axial sectional view showing a state in which a shock absorber according to any embodiment of the present invention is attached so as to connect a side wall of a building and a retaining wall.

The buffer of the present invention can be suitably used, for example, to absorb the energy of impact and shaking that a building can receive when an earthquake occurs. The shock absorber of the present invention can be installed on the side wall and / or a portion (for example, a retaining wall) of any building facing the side wall of the building and / or facing the side wall of the building in the seismic isolated building. It is suitable to be installed on a site (for example, a retaining wall).
Hereinafter, embodiments of the buffer according to the present invention and the mounting structure of the buffer will be described as examples with reference to the drawings.

1 to 4 are drawings for explaining the buffer 1 according to the embodiment of the present invention and the mounting structure of the buffer according to the embodiment of the present invention.
In the example of FIGS. 1 to 4, the shock absorber 1 of the present embodiment is attached to a portion RW of the seismic isolated building SIB that is arranged to face the side wall BW of the building B. In the present embodiment, the site RW is a retaining wall (hereinafter, also referred to as “retaining wall RW”). FIG. 1 shows the seismic isolated building SIB of this example in a normal time when an earthquake does not occur, and FIG. 2 shows an enlarged view of the buffer body 1 of FIG. In FIGS. 1 and 2, the shock absorber 1 is in an initial state in which an impact from the building B has never been applied, and is in a state in which an external force is not acting (natural state).
FIG. 3 shows a state when the side wall of the building collides with the retaining wall through the buffer in the example of FIG. FIG. 4 shows a compressed buffer in the state of FIG. Note that FIG. 4 only schematically shows the behavior of the buffer body 1, and the actual behavior of the buffer body 1 may differ from that shown in FIG.
Hereinafter, the seismic isolated building SIB of this example will be described first, and then the role of the buffer body 1 of this example will be described.

As shown in FIG. 1, the seismic isolation building SIB includes a foundation F, one or more (plurality in this example) seismic isolation device SID, a building B, a retaining wall RW, and one or a plurality (this example). The buffer 1 of the present embodiment (s) is provided.
The foundation F is, for example, a substantially horizontal structure for supporting the building B, and is constructed on the site where the building B is built. The foundation F is constructed, for example, by pouring concrete into the reinforcement arrangement.
A seismic isolation device SID is provided on the foundation F, and a building B is arranged on the seismic isolation device SID.
The seismic isolation device SID is configured to allow the building B to move horizontally with respect to the foundation F, thereby parrying the shaking and suppressing the shaking from being transmitted to the building B in the event of an earthquake. It is made to do. The seismic isolation building SIB of this example has seismic isolation rubber (also referred to as “laminated rubber”) having a laminated body in which rubber sheets and steel plates are alternately laminated as a seismic isolation device SID. The seismic isolation rubber has not only the function of parrying the shaking but also the function of absorbing the energy of the shaking (mainly the horizontal shaking). However, the seismic isolation building SIB may have any kind of seismic isolation device such as a bearing, a damper, etc. that supports the building B in addition to or in place of the seismic isolation rubber as the seismic isolation device SID.
A retaining wall RW is erected on the outer edge of the foundation F. The retaining wall RW is arranged so as to face the side wall BW of the building B at a horizontal interval.

The shock absorber 1 of the present embodiment is attached to the retaining wall RW, and more specifically, it is attached to the surface of the retaining wall RW facing the side wall BW of the building B.
Further, in the mounting structure of the shock absorber of the present embodiment, at least one (specifically, the retaining wall) RW of the side wall BW of the building B in which the shock absorber 1 of the present embodiment is arranged to face each other and the portion (for example, a retaining wall) RW. It is attached to the retaining wall RW).

In the seismic isolated building SIB of this example configured in this way, when an earthquake of the expected scale occurs, the building B does not collide with the retaining wall RW due to the action of the seismic isolation device SID. While swaying horizontally with respect to the foundation F, the energy of the swaying is gradually absorbed by the action of the seismic isolation device SID, and the swaying subsides.
On the other hand, in Japan, in recent years, the Great East Japan Earthquake occurred in 2011, and the Kumamoto earthquake occurred in 2016.The scale of the earthquake is gradually increasing compared to the past, and it is assumed in the future. There is also concern that a large-scale earthquake exceeding the above will occur. When a large-scale earthquake that exceeds such an assumption occurs, as shown in FIGS. 3 and 4, the energy absorption function of the seismic isolation device SID cannot cope with it, and the building B acts on the foundation F. There is a concern that it will move excessively horizontally and collide with the retaining wall RW. Therefore, the shock absorber 1 of this example is provided in order to cope with the shaking that cannot be dealt with only by the seismic isolation device SID. Since the cushioning body 1 is provided on the surface of the retaining wall RW facing the side wall BW of the building B, the building B collides with the retaining wall RW through the cushioning body 1 instead of directly. .. When the building B collides with the shock absorber 1, the shock absorber 1 cushions the impact received by the building B and absorbs energy to attenuate the shaking. Further, the presence of the buffer 1 can suppress excessive deformation of the seismic isolation device SID.

The buffer 1 of each example described in the present specification and the buffer 1 in the mounting structure of the buffer of each example described in the present specification are arranged to face each other in the seismic isolation building SIB as described above. It may be attached to at least one of the side wall BW and the part (for example, retaining wall) RW of the building B, that is, one of the side wall BW and the part (for example, retaining wall) RW as in the example of FIG. 1 (FIG. 1). In the example, it may be attached only to the retaining wall RW) and may be separated from the other side of the side wall BW and the site (for example, the retaining wall) RW (the side wall BW in the example of FIG. 1), or may be described later. It may be attached to both the side wall BW and the site (for example, retaining wall) RW as in the example of FIG. Further, separate buffers 1 may be provided on both the side wall BW of the building B and the portion (for example, retaining wall) RW. Even in these cases, when a large earthquake occurs, the building B will collide with the site (for example, retaining wall) RW via the buffer 1 instead of directly, so that the building B receives the buffer 1. It can absorb energy as well as cushion the impact.
Further, in the above, the case where the shock absorber 1 is provided in the seismic isolated building SIB has been described, but the cushioning body 1 of each example described in the present specification and the cushioning body of each example described in the present specification are attached. The shock absorber 1 in the structure may be attached to at least one of a normal building B not provided with the seismic isolation device SID and a portion (for example, a retaining wall) RW facing the normal building B.
Further, the portion RW may be any structure other than the retaining wall.

In the following, for convenience, of the side wall BW and the retaining wall RW of the building B, the one to which the cushioning body 1 is attached (the retaining wall RW in the example of FIG. 1) is referred to as "mounting wall W" and cushioned. The side to which the body 1 is not attached and is separated and opposed to the shock absorber 1 (in the example of FIG. 1, the side wall BW of the building B) is referred to as "opposing wall W'". In the example of FIG. 16 described later, since the shock absorber 1 is attached to both the side wall BW and the retaining wall RW, both the side wall BW and the retaining wall RW are mounting walls W.

Next, the configuration of the buffer 1 according to the embodiment of the present invention will be described in detail with reference mainly to FIGS. 2 and 4.
FIG. 2 is an axial sectional view showing the buffer 1 of the present embodiment shown in FIG. 1 by a cross section parallel to the axial direction of the buffer 1. The cross section of FIG. 2 is a cross section that passes through the central axis O of the buffer body 1. As described above, in FIG. 2, the buffer 1 is in the initial state (and in the natural state). FIG. 4 is a drawing corresponding to FIG. 2, and the buffer 1 is in a compressed state.
As shown in FIG. 2, the buffer body 1 of the present embodiment includes a buffer body portion 10. The buffer body 10 is configured to mitigate and absorb the impact input when the building B hits.
The buffer body 10 includes a plurality of disc springs 11 and one or a plurality of viscoelastic body layers 12.

In the present specification, the "axial direction of the buffer (1)" is the same as the axial direction of the buffer body (10) (hereinafter, also simply referred to as "axial direction"), and the buffer (1). ) Is parallel to the central axis (O). Further, the "central axis (O) of the buffer body (1)" is the same as the central axis (O) of the buffer body (10), and is the same as the central axis (O) of the disc spring 11. The buffer 1 is oriented so that the axial direction is horizontal.
Hereinafter, for convenience, one side in the axial direction is referred to as "the first side in the axial direction (O1)", and the other side in the axial direction is referred to as "the second side in the axial direction (O2)". In the examples of FIGS. 1 to 4, the first side O1 in the axial direction when viewed from the buffer body 10 is the receiving side (the side that hits the facing wall W'), and is viewed from the buffer body 10. The second side O2 in the axial direction is the mounting side (mounting side to the mounting wall W). In this example, in the buffer body 1, the surface of the first side O1 in the axial direction of the buffer body 10 is separated and opposed to the facing wall W'in the axial direction, thereby causing an impact from the facing wall W'. Is set to be input in the axial direction.
Further, in the present specification, the "axial direction of the buffer (1)" is the same as the axial direction of the buffer body (10) (hereinafter, also simply referred to as "axial direction"), and is an axis line. The direction is perpendicular to the direction.
In the present specification, with respect to the buffer body (1), the buffer body portion (10), and the like, the “outer peripheral side” refers to the side far from the central axis (O) of the buffer body (1). On the other hand, with respect to the buffer body (1), the buffer body portion (10), and the like, the “inner peripheral side” refers to the side close to the central axis (O) of the buffer body (1).

The plurality of disc springs 11 constituting the buffer body 10 are arranged in one direction, and specifically, are arranged in the axial direction of the buffer body 10. The disc spring 11 has a through hole 11h in the center thereof, and protrudes toward one of the axial directions toward the inner peripheral side. The disc spring 11 is preferably formed in an annular conical shape, for example, but may be formed in another shape. For example, the outer edge shape of the disc spring 11 is not limited to a circular shape, and may be any shape such as a quadrangle.

The disc spring 11 is preferably made of metal and more preferably made of spring steel.

One or a plurality of viscoelastic body layers 12 constituting the buffer body 10 are arranged between two disc springs 11 adjacent to each other in the axial direction of the buffer body 10, respectively.
The viscoelastic body layer 12 also has the same shape as the disc spring 11. That is, the viscoelastic body layer 12 has a through hole 12h in the center thereof, and protrudes toward one of the axial directions toward the inner peripheral side. The viscoelastic body layer 12 and the two disc springs 11 adjacent to the viscoelastic body layer 12 project toward the same side in the axial direction toward the inner peripheral side, respectively. The viscoelastic body layer 12 is preferably formed in an annular conical shape, for example, but may be formed in another shape. For example, the outer edge shape of the viscoelastic body layer 12 is not limited to a circular shape, and may be any shape such as a quadrangle.

The viscoelastic body layer 12 may be composed of any viscoelastic body, but is preferably composed of an elastomer-based material (for example, rubber (synthetic rubber or natural rubber)), and is preferably composed of a highly damped elastomer-based material (for example, natural rubber). , High damping rubber) is more preferable. When the viscoelastic body layer 12 is composed of a highly damped elastomer-based material, the vibration damping performance of the cushioning body 1 can be enhanced, that is, the cushioning body 1 can absorb the energy of the earthquake more effectively. ..
When the viscoelastic body layer 12 is made of an elastomer-based material, the elastomer-based material constituting the viscoelastic body layer 12 preferably has an equivalent viscosity damping constant eq of 0.02 to 0.40. When the viscoelastic body layer 12 is made of a high-damping elastomer-based material, the high-damping elastomer-based material constituting the viscoelastic body layer 12 has an equivalent viscous damping constant eq of 0.05 to 0.40. Is preferable, and 0.10 to 0.30 is more preferable.
Here, the "equivalent viscosity attenuation constant hex" specifically refers to the equivalent viscosity attenuation constant hex (0.33 Hz / 100%) in a temperature environment of 20 ° C. The equivalent viscosity attenuation constant hex (0.33 Hz / 100%) in a temperature environment of 20 ° C. is measured according to the description of the shear characteristic test of 6.2.2 of JIS K6410-2 (2011). The larger the value of the equivalent viscosity damping constant hex, the better the damping performance.

The shock absorber 1 is attached to the mounting wall W by, for example, a guide portion 20 (FIGS. 2 and 4) described later.

Here, the operation and effect of the buffer 1 of the present embodiment and the mounting structure of the buffer of the present embodiment will be described.
In the present embodiment, as described above, the cushioning body 1 is configured to be provided on at least one of the side wall BW and the retaining wall RW of the building B arranged to face each other, and the cushioning body portion 10 of the cushioning body 1 is provided. Has a plurality of disc springs 11 arranged in the axial direction and a viscoelastic body layer 12 arranged between two disc springs 11 adjacent to each other in the axial direction.
In the seismic isolated building SIB of this example provided with the shock absorber 1 having such a configuration, when a large-scale earthquake exceeding an assumption occurs and the building B collides with the retaining wall RW through the shock absorber 1, the shock absorber is buffered. The buffer body 10 of the body 1 is compressed in the axial direction (FIG. 4). At this time, the disc spring 11 is deformed so that the inclination angle with respect to the axial direction increases (that is, the disc spring 11 becomes flatter), thereby alleviating the impact received by the building B and the energy of the impact. Absorbs and damps the shaking. Further, the viscoelastic body layer 12 follows the disc spring 11 and deforms so that the inclination angle with respect to the axial direction increases (that is, the viscoelastic body layer 12 becomes flatter) in the axial direction. By being compressed, the impact received by the building B is alleviated, and the energy of the impact is absorbed to attenuate the shaking. In this way, the impact on the building can be mitigated, the energy of the impact can be absorbed, and the shaking can be damped. Further, the presence of the buffer 1 can suppress excessive deformation of the seismic isolation device SID.
Here, if the cushioning body 1 is formed only of a viscoelastic body such as rubber as in Patent Document 1, the degree of freedom in designing the cushioning body 1 is lowered, and a load displacement diagram that can be realized (and by extension, a load displacement diagram) can be realized. There are fewer types of vibration damping characteristics). Therefore, the types of earthquakes that can absorb energy are reduced. Further, in that case, in order to make the vibration damping characteristic of the cushioning body 1 non-linear, it is necessary to use a special viscoelastic body.
In that respect, in the present embodiment, since the buffer body 10 of the shock absorber 1 includes not only the viscoelastic body layer 12 made of a viscoelastic body but also the disc spring 11, the buffer body 10 (and thus the cushion body 10) The degree of freedom in designing the shock absorber 1) can be increased, and a wide variety of non-linear load displacement diagrams (and thus vibration damping characteristics) can be realized. Therefore, it is possible to absorb the energy of various earthquakes and, by extension, respond to various earthquakes. Further, even if a special viscoelastic body is not used as the viscoelastic body layer 12 (even if the viscoelastic body constituting the viscoelastic body layer 12 is linear), the vibration damping characteristic of the buffer body 1 is made non-linear. be able to. Therefore, a wide variety of non-linear load displacement diagrams (and thus vibration damping characteristics) can be realized with a simpler structure.
Further, in the present embodiment, since the cushioning body 10 of the cushioning body 1 is composed of a combination of the viscoelastic body layer 12 and the disc spring 11, the cushioning body 1 is tentatively formed only by the viscoelastic body. It is possible to make the cushioning body 1 more compact and lighter than in the case of the above.
Further, in the present embodiment, since a commercially available product can be used as the disc spring 11, the cost of the buffer body 1 is reduced as compared with the case where the buffer body 1 is formed only by a viscoelastic body. It is possible to do. Further, in the present embodiment, in order to realize different vibration damping characteristics, for example, it is only necessary to change the combination of the disc spring 11 and the viscoelastic body layer 12, and it is not necessary to prepare a new mold. From such a point as well, it is possible to reduce the cost of the buffer 1 as compared with the case where the buffer 1 is formed only by the viscoelastic body.
Further, in the present embodiment, when the parts of the cushioning body 1 are replaced, only a part of the cushioning body 1 (for example, the disc spring 11 or the viscoelastic body layer 12) can be replaced. Since it is possible, the cost and labor required for replacement can be reduced as compared with the case where the cushioning body 1 is integrally formed by only the viscoelastic body.
Further, according to the present embodiment, the shock absorber 1 can be easily installed on the side wall BW of the existing building B or the retaining wall RW arranged opposite to the side wall BW, so that the existing building B can be easily installed. It is possible to respond to a large-scale earthquake. For example, in a seismic isolation building SIB, if it is attempted to cope with a larger-scale earthquake using only the seismic isolation device SID without using the shock absorber 1, the seismic isolation device SID becomes larger (for example, the seismic isolation device). If the SID is seismic isolation rubber, it is considered necessary to increase the rubber thickness and the flat area). However, if the shock absorber 1 of the present embodiment is retrofitted to the existing seismic isolation building SIB, it becomes possible to cope with a larger-scale earthquake without requiring an increase in the size of the seismic isolation device SID.

Hereinafter, suitable configurations, modifications, and the like of the buffer 1 of any embodiment of the present invention and the buffer 1 in the mounting structure of the buffer of any embodiment of the present invention will be described with reference to FIGS. 5 to 16. It will be explained with reference to it. In the following, unless otherwise specified, the configuration of the shock absorber 1 in the initial state (a state in which an impact from the building B has never been applied) and a natural state (a state in which no external force is applied) will be described. ..

In each example described in the present specification, the number of the disc spring 11 and the viscoelastic body layer 12 in the buffer body 10 and the direction of protrusion are arbitrary. By adjusting the number of disc springs 11 and the viscoelastic body layer 12 and the direction of protrusion, the vibration damping characteristics of the cushioning body 10 (and thus the cushioning body 1) can be adjusted.
When the buffer body portion 10 has a plurality of viscoelastic body layers 12, it is preferable that each viscoelastic body layer 12 is arranged between two disc springs 11 adjacent to each other in the axial direction. ..
For example, as shown in the example of FIG. 15, the buffer body 10 is adjacent to each other in the axial direction, and the same side in the axial direction (the first side O1 in the axial direction or the second side O2 in the axial direction) as they move toward the inner peripheral side. There may be only one set 14 composed of a plurality of disc springs 11 and one or a plurality of viscoelastic body layers 12 projecting toward (that is, projecting to the same side in the axial direction). Alternatively, the cushioning body 10 is adjacent to each other in the axial direction as in each of the examples of FIGS. 2 and 7 to 14, and the same side in the axial direction (the first side O1 in the axial direction or O1 or the first side in the axial direction) as the inner peripheral side thereof. There are a plurality of sets 14 composed of a plurality of disc springs 11 and one or a plurality of viscoelastic body layers 12 projecting toward the second side O2 in the axial direction (that is, projecting toward the same side in the axial direction). You may. In this case, the buffer body 10 is moved to the first side O1 in the axial direction as the disc spring 11 and the viscoelastic body layer 12 are directed toward the inner peripheral side, as in the examples of FIGS. 2 and 7 to 14. As the pair 14, the disc spring 11 and the viscoelastic body layer 12 projecting toward the inner peripheral side (that is, projecting toward the first side O1 in the axial direction), the pair 14 and the viscoelastic body layer 12 move toward the second side O2 in the axial direction. It is preferable that the sets 14 protruding in the axial direction (that is, protruding toward the second side O2 in the axial direction) are alternately arranged in the axial direction.
By adjusting the number of sets 14, the number of each of the disc springs 11 and the viscoelastic body layer 12 constituting the set 14, and the direction of protrusion, the vibration damping characteristics of the buffer body 10 (and thus the buffer 1) can be improved. Can be adjusted.

In each of the examples described in the present specification, as in each of the examples of FIGS. 2 and 7 to 14, any plurality of disc springs 11 constituting the buffer body 10 are viscoelastic bodies. They may be adjacent to each other in the axial direction without passing through the layer 12, and may protrude toward the same side in the axial direction (that is, project to the same side in the axial direction) toward the inner peripheral side.
As a result, the rigidity of the buffer body 10 in the axial direction can be increased.
By adjusting the number of the plurality of disc springs 11 that are adjacent to each other and project to the same side in the axial direction and the direction of the protrusion, the rigidity of the buffer body 10 and the vibration damping characteristic of the buffer 1 can be adjusted. it can.
For example, in each of the examples of FIGS. 2 and 7 to 14, the buffer main body 10 has a plurality of (two in the examples of each figure) disc springs 11 in each of the one or a plurality of sets 14 and viscoelasticity. They are adjacent to each other in the axial direction without passing through the viscoelastic body layer 12, and project toward the first side O1 in the axial direction toward the inner peripheral side, and in the other one or more sets 14, a plurality of (In the example of each figure, two) disc springs 11 are adjacent to each other in the axial direction without passing through the viscoelastic body layer 12, and project toward the second side O2 in the axial direction as they move toward the inner peripheral side. ing.
A plurality of disc springs 11 adjacent to each other without the viscoelastic body layer 12 may not be fixed to each other, or may be fixed to each other by adhesion (adhesion with an adhesive or the like) or fusion. May be good.

In each example described in the present specification, the viscoelastic body layer 12 and the disc spring 11 adjacent thereto are fixed to each other by adhesion (vulcanization adhesion, adhesion with an adhesive, etc.) or fusion. However, it does not have to be fixed to each other.
When the viscoelastic body layer 12 and the disc spring 11 adjacent thereto are fixed to each other by adhesion (sulfurization adhesion, adhesion with an adhesive, etc.) or fusion, the disc spring 11 is attached to the viscoelastic body layer 12. It is preferable to roughen at least the surface of the disc spring 11 on the side where it is fixed to the viscoelastic body layer 12 by shot blasting or the like. As a result, the disc spring 11 and the viscoelastic body layer 12 can be more firmly fixed by the anchor effect.

In each of the examples described herein, it is preferable that the buffer 1 further includes a guide portion 20 as in each of the examples of FIGS. 2 and 4 to 15. The guide portion 20 is configured to fix the direction (directivity direction) of the buffer main body 10 so that the axial direction of the buffer main body 10 is horizontal. Further, the guide unit 20 guides the buffer body 10 so that the buffer body 10 is compressed in the horizontal direction (and thus in the axial direction) when the buffer body 10 is compressed (FIG. 4).
The guide portion 20 may have an arbitrary configuration.
The guide portion 20 is preferably made of a metal or a resin (for example, a hard resin such as ultra high molecular weight polyethylene (UHMW-PE)), but may be made of another material.

In each of the examples described herein, when the buffer 1 has a guide portion 20, the guide portion 20 is attached to the mounting wall W, for example, as in each of the examples of FIGS. 2 and 4 to 15. , It is preferable that it extends in the horizontal direction.
As described above, when the guide portion 20 is attached to the mounting wall W and extends in the horizontal direction, the guide portion 20 is the example of each of FIGS. 2, 4 to 6, and 9 to 15. As described above, the inside of the through hole 10h (through hole 10h1 in FIG. 15) of the buffer body 10 may extend. The through hole 10h of the buffer body 10 penetrates the buffer body 10 in the axial direction. The through hole 10h of the buffer body portion 10 is composed of a through hole 11h of each disc spring 11 and a through hole 12h of each viscoelastic body layer 12 arranged in the axial direction. The guide portion 20 extends in the axial direction (and the horizontal direction) inside the through hole 10h of the buffer body portion 10. By supporting the load of the buffer body 10 in this way, the guide portion 20 can fix the direction of the buffer body 10 so that the axial direction of the buffer body 10 is horizontal. Further, the buffer body portion 10 is not fixed to the guide portion 20, so that it can be displaced with respect to the guide portion 20. As a result, the guide unit 20 can guide the buffer body 10 so that the buffer body 10 is compressed in the horizontal direction (and thus in the axial direction) when the buffer body 10 is compressed (FIG. 4 or the like). it can. In each of the examples of FIGS. 2, 4 to 6, and 9 to 15, the guide portion 20 extends inside the through hole 10h located on the central axis O of the buffer main body portion 10. The guide portion 20 may extend inside another through hole 10h (not shown) provided on the outer peripheral side of the through hole 10h located on the central axis O of the buffer body portion 10. Further, in each of the examples of FIGS. 2, 4 to 6, and 9 to 15, the guide portion 20 is formed in a columnar shape, but the guide portion 20 may be formed in any shape.
Alternatively, as described above, when the guide portion 20 is attached to the mounting wall W and extends in the horizontal direction, the guide portion 20 is more than the buffer body portion 10 as in the examples of FIGS. 7 to 8. May be located on the outer peripheral side. In that case, the guide portion 20 may be configured in an annular shape so as to extend around the entire circumference of the buffer main body portion 10 as in the examples of FIGS. 7 to 8, or the buffer main body portion 10 may be formed in an annular shape. The circumference may extend over only a part in the circumferential direction so as to include the lower circumferential position in the vertical direction with respect to the buffer body 10. By supporting the load of the buffer body 10 in this way, the guide portion 20 can fix the direction of the buffer body 10 so that the axial direction of the buffer body 10 is horizontal. Further, the buffer body portion 10 is not fixed to the guide portion 20, so that it can be displaced with respect to the guide portion 20. As a result, the guide unit 20 can guide the buffer body 10 so that the buffer body 10 is compressed in the horizontal direction (and thus in the axial direction) when the buffer body 10 is compressed.

In each example described in the present specification, as described above, when the guide portion 20 is attached to the mounting wall W and extends in the horizontal direction (FIGS. 2, 4 to 15), the guide portion 20 It is preferable that the number 20 is configured so as not to interfere with the compression operation of the buffer body 10 when the buffer body 10 is compressed (FIG. 4 or the like).
From this point of view, as described above, when the guide portion 20 is attached to the mounting wall W and extends in the horizontal direction, the guide portion 20 is as shown in the examples of FIGS. 4 and 11. It is preferable that the structure is expandable and contractible in the extending direction (and thus the axial direction). As a result, the guide portion 20 reduces its own extending length as the distance between the mounting wall W and the facing wall W'reduces when the buffer main body portion 10 is compressed, so that the buffer main body 20 It is possible to suppress hindering the compression operation of the unit 10. In FIGS. 4 and 11, the specific configuration of the guide unit 20 is not shown. In this case, it is preferable that the guide portion 20 is configured to be expandable and contractible in the extending direction (and thus in the axial direction) by a mechanical structure (not a material).
Alternatively, from the same viewpoint, when the guide portion 20 is attached to the mounting wall W and extends in the horizontal direction as described above, the guide portion 20 is as shown in the examples of FIGS. 5 and 13. , One side of the guide portion 20 in the extending direction (second side O2 in the axial direction) is fixed to the mounting wall W, and the other side of the guide portion 20 in the extending direction (first side O1 in the axial direction) is the facing wall. It is preferable that it is configured so that it can enter the inside of the receiving hole Wh formed in W'. As a result, in the guide portion 20, when the buffer body portion 10 is compressed, the other side of the guide portion 20 in the extending direction is the facing wall W as the distance between the mounting wall W and the facing wall W'is reduced. By entering the inside of the receiving hole Wh formed in', it is possible to suppress the hindrance of the compression operation of the buffer body portion 10. It is preferable that the diameter of the receiving hole Wh of the facing wall W'is larger than the diameter of the guide portion 20 and smaller than the outer diameter of the buffer body portion 10. As a result, when the facing wall W'approaches the mounting wall W, the receiving hole Wh receives the guide portion 20 and the facing wall W'hits the buffer body 10 to compress the buffer body 10 more reliably. Can be done.
Alternatively, from the same viewpoint, when the guide portion 20 is attached to the mounting wall W and extends in the horizontal direction as described above, the guide portion 20 is as shown in the examples of FIGS. 6 and 14. , The mounting wall so that one side of the guide portion 20 in the extending direction (second side O2 in the axial direction) can be displaced in the axial direction (and thus in the horizontal direction) inside the receiving hole Wh formed in the mounting wall W. It is preferable that it is attached to W. As a result, the guide portion 20 is provided on one side (axial direction) of the guide portion 20 in the extending direction in accordance with the reduction in the distance between the mounting wall W and the facing wall W'when the buffer body portion 10 is compressed. By displacing the second side O2) toward the inner back side (second side O2 in the axial direction) of the receiving hole Wh formed in the mounting wall W, it is possible to suppress hindering the compression operation of the buffer body portion 10. It is preferable that the diameter of the receiving hole Wh of the mounting wall W is larger than the diameter of the guide portion 20 and smaller than the outer diameter of the buffer body portion 10. As a result, when the facing wall W'approaches the mounting wall W, the receiving hole Wh receives the guide portion 20 and the facing wall W'hits the buffer body 10 to compress the buffer body 10 more reliably. Can be done.

In each of the examples described in the present specification, it is preferable that the reinforcing material 13 is embedded inside the viscoelastic body layer 12, as in each of the examples of FIGS. 2 and 4 to 15.
The reinforcing material 13 is made of a material harder than the viscoelastic body constituting the viscoelastic body layer 12. It is preferable that the reinforcing material 13 is made of, for example, a canvas, a plate made of metal (for example, steel), hard rubber, or the like.
Since the reinforcing material 13 is embedded inside the viscoelastic body layer 12, the rigidity of the buffer body portion 10 can be increased as compared with the case where the reinforcing material 13 is not embedded inside the viscoelastic body layer 12. As a result, it is possible to absorb the same impact energy while making the buffer body 10 more compact. Further, since the reinforcing material 13 is embedded inside the viscoelastic body layer 12, the reinforcing material 13 is fractured and / or plastically deformed when the buffer body portion 10 is compressed, whereby the seismic energy is fractured and the seismic energy is fractured. / Or the energy of the earthquake can be reduced by being consumed as the energy of plastic deformation.
It is preferable that the reinforcing material 13 extends in the plane direction of the viscoelastic body layer 12. As a result, when the buffer body 10 is compressed, the rigidity of the buffer body 10 in the compression direction (axial direction) is increased as compared with the case where the reinforcing material 13 is not embedded inside the viscoelastic body layer 12. The reinforcing material 13 is not embedded inside the viscoelastic body layer 12 to effectively reduce the energy of the impact in the axial direction and to provide the rigidity of the cushioning body 10 in the direction perpendicular to the compression direction (vertical direction). It is maintained to be approximately the same as in the case, thereby allowing the sway in the direction intersecting the axial direction to be dispelled.
Here, the "plane direction of the viscoelastic body layer (12)" is a direction perpendicular to the layer thickness direction of the viscoelastic body layer (12).
It is preferable that the reinforcing material 13 exists over almost the entire surface direction of the viscoelastic body layer 12, as in each of the examples of FIGS. 2 and 4 to 15, although it is preferable that the viscoelastic body layer 12 exists. It may be present only in a part of the plane direction of.
Further, as in each of the examples of FIGS. 2 and 4 to 15, the reinforcing material 13 may be provided with only one layer in the layer thickness direction of the viscoelastic body layer 12, or the viscoelastic body layer 12 may be provided. A plurality of layers may be provided in the layer thickness direction.
When the buffer body portion 10 has a plurality of viscoelastic body layers 12, the reinforcing material 13 may be embedded in all of the plurality of viscoelastic body layers 12, or a plurality of these viscoelastic body layers 12. The reinforcing material 13 may be embedded inside only a part (one or a plurality) of the viscoelastic body layers 12 of the viscoelastic body layers 12.

In each of the examples described herein, when the buffer body 10 has at least two viscoelastic body layers 12, as in each of the examples of FIGS. 2, 7, and 10-14, these At least two viscoelastic body layers 12 may have the same layer thickness (that is, uniform), or may have non-uniform layer thicknesses as in the example of FIG. In the latter case, the degree of freedom in designing the buffer body 10 can be further increased. In the example of FIG. 9, the buffer body portion 10 has four viscoelastic body layers 12, of which the layer thickness of the two viscoelastic body layers 12a (12) is the other two viscoelastic body layers. It is larger than the layer thickness of 12b (12).
The vibration damping performance of the cushioning body 10 depends on the total thickness of each viscoelastic body layer 12. That is, the vibration damping performance of the buffer body 10 can be adjusted by individually adjusting the layer thickness of each viscoelastic body layer 12 and thereby adjusting the total layer thickness of each viscoelastic body layer 12.
As described above, it is preferable that each viscoelastic body layer 12 is arranged between two disc springs 11 adjacent to each other in the axial direction.

In each example described in the present specification, from the viewpoint of improving the vibration damping performance, the total layer thickness of each viscoelastic body layer 12 of the buffer body 10 is one times the total thickness of each disc spring 11. The above is preferable, and the value of 2 times or more is more preferable.

In each of the examples described herein, when the buffer body 10 has at least two viscoelastic body layers 12, as in each of the examples of FIGS. 2, 7, 9 to 14, these At least two viscoelastic body layers 12 may have the same (that is, uniform) axial lengths, or may have non-uniform axial lengths.
Further, in each of the examples described in the present specification, the length of the viscoelastic body layer 12 in the axial direction of the buffer body 10 is the same as that of FIGS. 2, 4 to 8, and 10 to 15. As described above, the length in the axial direction of the disc spring 11 may be the same (including substantially the same), or may be shorter than the length in the axial direction of the disc spring 11 as in the example of FIG. Alternatively, it may be longer than the length of the disc spring 11 in the axial direction.

In each of the examples described herein, the buffer 1 is a disc spring 11 and viscoelasticity constituting at least a part of the buffer body 10 as in each of the examples of FIGS. 10 to 11 and 13 to 15. It is preferable that the body layer 12 is further provided with a regulating portion 30 having a pair of contact members 31 that are applied to the body layer 12 from both sides in the axial direction. More specifically, the pair of abutting members 31 are axially aligned with respect to the disc spring 11 and the viscoelastic body layer 12 constituting the entire buffer body portion 10, as in each of the examples of FIGS. 10 and 13 to 14. It is applied from both sides in the direction, or as in the example of FIG. 15, the above-mentioned set 14 in the buffer body 10 (adjacent to each other in the axial direction and the same side in the axial direction (axis) toward the inner peripheral side, respectively). A disc spring 11 and a viscoelastic body constituting a set 14) composed of a plurality of disc springs 11 and one or a plurality of viscoelastic body layers 12 projecting toward the first side O1 in the direction or the second side O2) in the axial direction. It is preferable that the viscoelastic body layer 12 is hit from both sides in the axial direction.
The contact member 31 is preferably formed in a plate shape, for example, but may be formed in any other shape.
The patch member 31 may be made of any material, but for example, a metal (for example, iron) or a resin (for example, a hard resin such as ultra high molecular weight polyethylene (UHMW-PE)) is preferable.
As in each of the examples of FIGS. 10 and 15, the pair of contact members 31 may be connected by a connecting member 32. The connecting member 32 may be composed of a guide portion 20 as in the example of FIG. 10, or may be composed of a member different from the guide portion 20 as in the example of FIG.
When the connecting member 32 is composed of a member different from the guide portion 20 as in the example of FIG. 15, the connecting member 32 extends inside the through hole 10h2 (10h) of the buffer body portion 10. The through hole 10h2 (10h) is different from the through hole 10h1 (10h) through which the guide portion 20 passes. The through holes 10h2 (10h) are arranged in a row with the through holes 11h2 of each disc spring 11 constituting the buffer body portion 10 and the through holes 12h2 of each viscoelastic body layer 12 constituting the buffer body portion 10. Consists of. It is preferable that the through hole 10h2 (10h) through which the connecting member 32 passes extends in the thickness direction of the disc spring 11 (and thus in the layer thickness direction of the viscoelastic body layer 12) as in the example of FIG. , May extend in other directions (eg, axial direction).
When the pair of contact members 31 are connected to each other by the connecting member 32 (FIGS. 10 and 15), the connecting member 32 is configured to be expandable and contractible from the viewpoint of not interfering with the compression operation of the buffer body portion 10. If so, it is preferable.
When the connecting member 32 is composed of a member different from the guide portion 20 as in the example of FIG. 15, the connecting member 32 may be composed of, for example, a cable (for example, a PC cable).
The pair of contact members 31 are applied to the disc spring 11 and the viscoelastic body layer 12 constituting the entire cushioning body 10 from both sides in the axial direction, as in the examples of FIGS. 10 and 13 to 14. If so, it is preferable that one of the contact members 31 is fixed to the mounting wall W. In this case, the pair of contact members 31 are not connected by the connecting member 32, but the one of the pair of contact members 31 that is fixed to the mounting wall W (axial direction th) as in the example of FIG. One side of the guide portion 20 (second side O2 in the axial direction) is fixed to the contact member 31 on the second side O2), and of the pair of contact members 31, the one farther from the mounting wall W (first side O1 in the axial direction). The other side of the guide portion 20 (first side O1 in the axial direction) may be inserted through the contact member 31 of the guide portion 20. In this case, the contact member 31 far from the mounting wall W (O1 on the first side in the axial direction) is provided with a through hole 31h, and the guide portion 20 is inserted through the through hole 31h. Further, it is preferable that the facing wall W'is provided with a receiving hole Wh that allows the guide portion 20 to enter. In this case, even if the guide portion 20 is not configured to be expandable and contractible, the compression operation of the buffer body portion 10 can be prevented from being hindered. Alternatively, in this case, instead of connecting the pair of contact members 31 to each other by the connecting member 32, the one of the pair of contact members 31 fixed to the mounting wall W (axis) as in the example of FIG. One side of the guide portion 20 (second side O2 in the axial direction) is inserted through the contact member 31 on the second side O2 in the direction, and of the pair of contact members 31, the one farther from the mounting wall W (first side in the axial direction). The other side (axial direction first side O1) of the guide portion 20 may be fixed to the contact member 31 of O1). In this case, the contact member 31 on the side fixed to the mounting wall W (second side O2 in the axial direction) is provided with a through hole 31h, and the guide portion 20 is inserted through the through hole 31h. Further, one side of the guide portion 20 in the extending direction (second side O2 in the axial direction) is mounted so that it can be displaced in the axial direction (and thus in the horizontal direction) inside the receiving hole Wh formed in the mounting wall W. It is good if it is attached to the wall W. Also in this case, even if the guide portion 20 is not configured to be expandable and contractible, the compression operation of the buffer body portion 10 can be prevented from being hindered.
As described above, the buffer body 1 has a pair of contact members 31 that are applied from both sides in the axial direction to the disc spring 11 and the viscoelastic body layer 12 that form at least a part of the buffer body portion 10. When the regulating portion 30 is provided (FIGS. 10 to 11 and 13 to 15), the disc spring 11 and the viscoelastic body layer 12 constituting at least a part of the buffer body portion 10 are separated from each other. It can be suppressed.

Alternatively, in each of the examples described herein, the buffer 1 has a side wall BW and a side wall BW with respect to the disc spring 11 and the viscoelastic body layer 12 constituting the entire buffer body 10 as in the example of FIG. It is preferable that the retaining wall RW is further provided with a regulating portion 30 having a contact member 31 which is applied from the side opposite to the side to which the buffer 1 is attached (attachment wall W).
The contact member 31 is preferably formed in a plate shape, for example, but may be formed in any other shape.
The patch member 31 may be made of any material, but for example, a metal (for example, iron) or a resin (for example, a hard resin such as ultra high molecular weight polyethylene (UHMW-PE)) is preferable.
As in the example of FIG. 12, the contact member 31 and the mounting wall W may be connected by the guide portion 20.
When the contact member 31 and the mounting wall W are connected to each other by the guide portion 20 (FIG. 12), the guide portion 20 is configured to be expandable and contractible from the viewpoint of not interfering with the compression operation of the buffer body portion 10. It is preferable to have it.
Alternatively, although not shown, one side of the guide portion 20 (second side O2 in the axial direction) is fixed to the mounting wall W instead of connecting the contact member 31 and the mounting wall W by the guide portion 20. The other side (the first side O1 in the axial direction) of the guide portion 20 may be inserted through the contact member 31. In this case, the contact member 31 is provided with a through hole 31h (not shown), and the guide portion 20 is inserted through the through hole 31h. Further, it is preferable that the facing wall W'is provided with a receiving hole Wh that allows the guide portion 20 to enter. In this case, even if the guide portion 20 is not configured to be expandable and contractible, the compression operation of the buffer body portion 10 can be prevented from being hindered. Alternatively, instead of the contact member 31 and the mounting wall W being connected by the guide portion 20, one side (second side O2 in the axial direction) of the guide portion 20 is a receiving hole Wh formed in the mounting wall W (FIG. 14). It is attached to the mounting wall W so that it can be displaced in the axial direction (and thus in the horizontal direction) inside the receiving hole Wh in the above example, and is attached to the contact member 31 on the other side of the guide portion 20 (axial direction). The first side O1) may be fixed. Also in this case, even if the guide portion 20 is not configured to be expandable and contractible, the compression operation of the buffer body portion 10 can be prevented from being hindered.
In this way, the buffer 1 is attached to the disc spring 11 and the viscoelastic body layer 12 constituting the entire buffer body 10 of the side wall BW and the retaining wall RW (mounting wall). Even when the regulating portion 30 having the contact member 31 applied from the opposite side to the W) is provided (FIG. 12), the disc spring 11 and the viscoelastic body layer 12 constituting the entire buffer body portion 10 are also provided. It is possible to prevent them from separating from each other and falling apart.

In each of the examples described herein, when the buffer 1 further comprises a regulatory section 30 as described above (FIGS. 10-10), at least one viscoelastic layer 12 is the buffer 1. In the natural state, it is preferable that the regulation unit 30 keeps the compressed state in the axial direction.
More specifically, the regulating portion 30 has a pair of contact members 31 that are applied from both sides in the axial direction to the disc spring 11 and the viscoelastic body layer 12 that form at least a part of the buffer body portion 10. In the case (FIGS. 10 to 11 and 13 to 15), each viscoelastic body layer 12 located between the pair of contact members 31 is maintained in a state of being compressed in the axial direction by the regulating portion 30. If so, it is preferable. In this case, it is preferable that an urging force in the direction (compression direction) of bringing the pair of contact members 31 closer to each other is applied between the pair of contact members 31. For example, although not shown, the member connecting the pair of contact members 31 (for example, the above-mentioned connecting member 32 or the guide portion 20) is configured to be expandable and contractible, and the pair of contact members 31 This can be realized by having an urging member (for example, a coil spring, an elastic cable, etc.) that applies an urging force in a direction (compression direction) that brings them closer to each other.
Further, the regulating portion 30 is attached to the disc spring 11 and the viscoelastic body layer 12 constituting the entire buffer body portion 10 with the cushioning body 1 of the side wall BW and the retaining wall RW (mounting wall W). When the contact member 31 is applied from the opposite side (FIG. 12), each viscoelastic body layer 12 located between the contact member 31 and the mounting wall W is axially oriented by the regulating portion 30. It is preferable that it is maintained in a compressed state. In this case, it is preferable to add an urging force in the direction (compression direction) to bring the contact member 31 and the mounting wall W closer to each other between the contact member 31 and the mounting wall W. This is, for example, although not shown, in a direction (compression direction) in which the contact member 31 and the member connecting the mounting walls W (for example, the guide portion 20 described above) bring the contact member 31 and the mounting wall W closer to each other. This can be achieved by having a member (for example, a coil spring, a cable having elasticity, etc.) to which an urging force is applied.
The buffer 1 further includes a regulating portion 30 as described above, and at least one viscoelastic body layer 12 is axially compressed by the regulating portion 30 in the natural state of the buffer 1. When maintained at, the frictional force of the viscoelastic body layer 12 can be improved, and thus the energy of the earthquake can be absorbed more effectively.

As shown in FIG. 16, for example, the shock absorber 1 in each of the above-described examples may be attached so as to connect the side wall BW of the building B and the retaining wall RW in the seismic isolated building SIB. In this case, at least one side of the shock absorber 1 in the axial direction is fixed to the side wall BW or the retaining wall RW of the building B. According to this configuration, when an earthquake occurs, the seismic isolation device SID and the shock absorber 1 always function at the same time regardless of the magnitude of the earthquake.
Further, the shock absorber 1 may be attached so as to connect a normal building B not provided with a seismic isolation device SID and a retaining wall RW arranged to face the normal building B.

The cushioning body of the present invention can be installed on the side wall of any building and / or the retaining wall facing the side wall of the building, but the side wall of the building and / or the retaining wall facing the side wall of the seismic isolated building. It is suitable to be installed in.

1: Buffer,
10: Buffer body, 10h, 10h1, 10h2: Through hole, 11: Belleville spring, 11h, 11h1, 11h2: Through hole, 12: Viscoelastic body layer, 12h, 12h1, 12h2: Through hole, 13: Reinforcing material, 14: Group,
20: Guide section,
30: Regulatory part, 31: Reliable member, 31h: Through hole, 32: Connecting member,
O: Central axis of buffer, O1: 1st side in axial direction, O2: 2nd side in axial direction, B: Building, BB: Bottom of building, BW: Side wall of building, W: Mounting wall, W': Retaining wall , Wh: Receiving hole, F: Foundation, RW: Retaining wall (part), SIB: Seismic isolation building, SID: Seismic isolation device

Claims (7)

A cushioning body provided on at least one of a side wall and a part of a building arranged opposite to each other.
Equipped with a buffer body
The buffer body is
A plurality of disc springs arranged in the axial direction of the buffer body, and
A viscoelastic body layer arranged between the two disc springs adjacent to each other in the axial direction,
Has a buffer. The buffer according to claim 1, wherein a reinforcing material is embedded inside the viscoelastic body layer. The buffer body portion has at least two viscoelastic body layers.
The at least two viscoelastic body layers are respectively arranged between the two disc springs adjacent to each other in the axial direction.
The buffer according to claim 1 or 2, wherein the at least two viscoelastic body layers have non-uniform layer thicknesses. With more regulatory departments
The regulatory department
A pair of contact members or contact members that are applied to the disc spring and the viscoelastic body layer that form at least a part of the buffer body from both sides in the axial direction.
A contact member, which is applied to the disc spring and the viscoelastic body layer constituting the entire buffer body portion from the side of the side wall and the portion opposite to the side to which the buffer is attached, is applied. The buffer according to any one of claims 1 to 3. The buffer according to claim 4, wherein at least one viscoelastic body layer is maintained in a state of being compressed in the axial direction by the regulating portion. An attachment structure for a buffer in which the buffer according to any one of claims 1 to 5 is attached to at least one of a side wall and a portion of a building arranged so as to face each other. The attachment structure for a buffer according to claim 6, wherein the buffer is attached to only one of the side wall and the portion, and is separated and opposed to the other side wall and the portion.

Images