JP2007162808A - Earthquake isolating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an earthquake isolating device which suppresses the increase of a production cost, and has vibration damping characteristics equivalent to or higher than that of a conventional earthquake isolating device without giving a load to the environment. <P>SOLUTION: A laminated body 16 is formed by alternately arranging a plurality of elastic circular rubber plates 18, and a plurality of circular metallic plates 20 for keeping the stiffness. Ring springs 22 are arranged in the spaces provided in the circular rubber plates 18. Fixing pins 22A are arranged on the front side of the ring springs 22, and fixing pins 22B are arranged on the reverse side of the ring springs 22 at the opposite positions by 180°, viewed from the fixing pins 22A arranged on the front surface. Hole portions 20A are provided at the positions of the circular metallic plates 20 corresponding to the positions of the fixing pins 22A, 22B respectively. The fixing pins 22A arranged on the front side of the ring springs 22 are fitted in the hole portions 20A of the circular metallic plate 20 arranged just above the ring springs 22. The fixing pins 22B arranged on the reverse side of the ring springs 22 are fitted in the hole portions 20A of the circular metallic plate 20 arranged just below the ring springs 22. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a seismic isolation device having vibration control characteristics equal to or higher than those of conventional ones while suppressing manufacturing costs and without causing a load on the environment.

  2. Description of the Related Art Conventionally, seismic isolation devices are known that are arranged between a building and the ground that supports the building in order to reduce earthquake shaking. And this seismic isolation device has not only the laminated rubber which laminated | stacked the rubber plate and the laminated board but the damping metal formed in the cylindrical shape for suppressing the vibration accompanying a vibration as these structural members, These members This combined action reduced earthquake shaking and made it difficult to transmit earthquake shaking to the building.

  However, lead materials are generally used as the damping metal formed in a cylindrical shape in conventional seismic isolation devices from the viewpoint of damping characteristics. When an earthquake occurs, the damping metal of this lead material undergoes shear deformation. However, as environmental considerations have become more important in recent years, the use of other materials has been considered. In other words, conventional seismic isolation devices have a risk of causing environmental impacts such as environmental pollution due to the use of lead materials between the installation of this seismic isolation device and the disposal due to use. .

For this reason, instead of a cylindrical damping metal made of lead material, a coil spring is formed of a normal metal material other than lead material, for example, so as to obtain a sufficient damping effect, and this coil spring is placed in a laminated rubber. In addition, the seismic isolation device of Patent Document 1 described below, which has a structure that generates a damping force, can be considered.
JP-A-11-270621

  From the above, it has been necessary to develop a damping metal used in a seismic isolation device that has a damping characteristic equal to or higher than that of a conventional damping metal without giving a load to the environment. However, the seismic isolation device of Patent Document 1 that employs a coil spring made of a normal metal material not only provides a sufficient amount of attenuation, but also requires a large coil spring, which increases the manufacturing cost. Had the risk of doing.

  An object of the present invention is to provide a seismic isolation device having vibration control characteristics equal to or higher than those of conventional ones while suppressing the manufacturing cost in consideration of the above-described facts and without giving a load to the environment.

A seismic isolation device according to claim 1 is a laminate in which elastic plates having elasticity and hard plates having rigidity are alternately laminated, and
A metal spring material disposed in the elastic plate;
A seismic isolation device having
Engagement portions are provided on the surfaces opposite to each other across the center of the spring material and on the mutually different surfaces of the spring material, and these hard plates are positioned respectively facing the two surfaces of the spring material. The engaging portion is engaged with each other.

The operation of the seismic isolation device according to claim 1 will be described below.
According to the seismic isolation device of this claim, the general metal excluding the lead material in the elastic plate of the laminated body in which the elastic plate having elasticity and the hard plate having rigidity are alternately laminated. The spring material by is arranged. However, engaging portions are respectively provided on different surfaces of the spring material in opposite positions with respect to the center of the spring material. And these engaging parts are the structures which each engage with the hard board located facing two surfaces of a spring material.

  In the event of an earthquake, horizontal displacement is input to this seismic isolation device, and the two hard plates positioned respectively facing the two surfaces of the spring material as the laminate is deformed There will be a gap between them. At this time, since the engaging portions provided on the spring material are engaged with the two hard plates respectively facing the two surfaces of the spring material, the two hard plates are shifted from each other. As a result, not only the spring material is deformed, but also the spring material is forcibly returned to its original shape at the time of shaking back in the event of an earthquake.

  As a result, not only the vibration is damped by the deformation of the elastic plate of the laminated body, but also when the spring material is deformed or returns to its original shape, the spring material dampens the vibration. And even when the seismic isolation device is repeatedly vibrated, the vibration of the same degree as that at the time of the early earthquake will continue to be attenuated. Therefore, according to the seismic isolation device according to the present claim, even when an earthquake occurs, the vibration of the earthquake is reliably reduced by the combined action between the elastic plate of the laminated body and the spring material that are elastically deformed. , Earthquake shaking will not be transmitted to the building side.

  On the other hand, with respect to the manufacture of the seismic isolation device, a simple process with only a few processes such as forming an engaging part by casting or the like and manufacturing a spring material into the elastic plate when manufacturing the spring material is performed. Since the seismic isolation device according to this claim can be manufactured simply by adding, an increase in the manufacturing cost of the seismic isolation device is also suppressed.

  As described above, in the seismic isolation device according to the present invention, the metal spring material is disposed in the elastic plate of the laminated body, and the spring materials are different from each other in the opposite positional relationship across the center of the spring material. The engaging part provided on the surface is configured to engage with the hard plate. As a result, the increase in manufacturing cost of the seismic isolation device is suppressed, and the vibration of the earthquake is reduced by the combined action between the laminate and the spring material without using lead material, and the necessary damping characteristics As a result, it has come to have vibration control characteristics equivalent to or better than those of conventional seismic isolation devices without giving a load to the environment.

The operation of the seismic isolation device according to claim 2 will be described below.
The present invention has the same configuration as that of the first embodiment and operates in the same manner, but further has a configuration in which the spring material is formed in a ring shape.

  That is, according to the present invention, the spring material in relation to the configuration in which the engaging portions are respectively provided on different surfaces of the spring material in opposite positions relative to each other across the center of the spring material in claim 1. Is formed in a ring shape. For this reason, as the spring material is made ring-shaped, a large stress is applied to the inner peripheral surface of the ring-shaped spring material at the time of deformation, and as a result, the spring material is appropriately deformed and vibrated. Can be attenuated more reliably.

The effect | action of the seismic isolation apparatus which concerns on Claim 3 is demonstrated below.
This claim has the same configuration as that of claim 1 and operates in the same manner, but further has a configuration in which the spring material is formed in a C shape.

  That is, according to the present invention, the spring material in relation to the configuration in which the engaging portions are respectively provided on different surfaces of the spring material in opposite positions relative to each other across the center of the spring material in claim 1. Is formed in a C-shape. For this reason, as the spring material is formed into a C-shape in which a part of the ring is released, a large stress is applied to the inner peripheral surface of the C-shaped spring material during deformation. As a result, the spring material is appropriately and largely deformed so that vibration can be damped more reliably.

The effect | action of the seismic isolation apparatus which concerns on Claim 4 is demonstrated below.
The present invention has the same configuration as that of the first embodiment and operates in the same manner, but further has a configuration in which a pair of spring materials exist within the same plane of the laminate with the center line of the laminate interposed therebetween. ing. That is, in this claim, since there is a pair of spring materials sandwiching the center line of the laminate in the same plane of the laminate, the number of spring materials is increased and the ability to damp vibration is simply increased. The vibration can be damped more efficiently with a small volume seismic isolation device.

The operation of the seismic isolation device according to claim 5 will be described below.
The present invention has the same configuration as that of the first aspect and operates in the same manner, but further, the engaging portion of the spring material is used as a protrusion and a hole is provided in the hard plate so that the protrusion of the spring material is hard. A plurality of spring materials are arranged along the stacking direction of the laminated body in a state of being fitted into the hole portions of the plate, and the positions of the protrusions respectively provided on the spring materials positioned side by side along the stacking direction are sequentially shifted. It has a configuration in which a spring material is arranged in a shape.

  That is, in this claim, the engaging portion is a protrusion, and a hole corresponding to this protrusion is provided in the hard plate, and by fitting these, the function and effect of claim 1 can be reliably achieved. I can do it now. In addition, by arranging the spring material in such a way that the protrusions provided on the plurality of spring materials positioned side by side along the stacking direction are sequentially shifted, the spring material can be applied to vibration from any direction. Vibration can be damped.

The operation of the seismic isolation device according to claim 6 will be described below.
The present invention has the same configuration as that of the first aspect and operates in the same manner, but further, the engaging portion of the spring material is used as a protrusion and a hole is provided in the hard plate so that the protrusion of the spring material is hard. A plurality of spring materials are arranged along the stacking direction of the laminated body in a state of being fitted in the hole portions of the plate, and the protrusions provided on the spring materials positioned side by side along the stacking direction are identical to each other. The spring material is arranged in a shape facing the direction.

  That is, in this claim, the engaging portion is a protrusion, and a hole corresponding to this protrusion is provided in the hard plate, and by fitting these, the function and effect of claim 1 can be reliably achieved. I can do it now. In addition, it is necessary to dampen vibrations in particular by arranging the spring members in such a manner that the protrusions provided on the plurality of spring members positioned side by side along the stacking direction are directed in the same direction. If there is a direction, the direction in which the protrusions face each other can coincide with that direction, and vibrations in this direction can be actively damped.

The operation of the seismic isolation device according to claim 7 will be described below.
The present invention has the same configuration as that of the first embodiment and operates in the same manner, but further has a configuration in which the spring material is formed of a twinned metal material. In other words, according to this claim, as the elastically deformable spring material is formed of a twinned metal material, the spring constant is lowered and the damping coefficient is increased, so that the damping material is equal to or larger than that of the conventional damping metal. It has vibration characteristics.

The operation of the seismic isolation device according to claim 8 will be described below.
In this claim, it has the same structure as that of claim 7 and acts in the same way, but further, Cu—Al—Mn alloy, Mg—Zr alloy, Mn—Cu alloy, Mn—Cu—Ni—Fe alloy, Cu -Al-Ni alloy, Ti-Ni alloy, Al-Zn alloy, Cu-Zn-Al alloy, Mg alloy, Cu-Al-Co alloy, Cu-Al-Mn-Ni alloy, Cu-Al-Mn-Co alloy , Cu-Si alloy, Fe-Mn-Si alloy, Fe-Ni-Co-Ti alloy, Fe-Ni-C alloy, Fe-Cr-Ni-Mn-Si-Co alloy, Ni-Al alloy, SUS304 Any one of the above is used as a twinned metal material.

  In other words, any one of these metals is used as a twinned metal material for forming a spring material, so that the spring material has a vibration damping characteristic equal to or higher than that of the conventional one without giving a load to the environment. Can be obtained more reliably.

  As described above, according to the above-described configuration of the present invention, there is an excellent effect that it is possible to provide a seismic isolation device having damping characteristics equal to or higher than those of the conventional one while suppressing the manufacturing cost and giving no load to the environment. .

  1st Embodiment of the seismic isolation apparatus which concerns on this invention is described based on FIGS. As shown in FIG. 2, the upper and lower parts of the seismic isolation device 10 according to the present embodiment are constituted by connecting plates 12 and 14 each formed in a disc shape. The lower connecting plate 12 is in contact with the ground, and the upper connecting plate 14 is in contact with the lower part of the building.

  A laminated body 16 formed in a cylindrical shape is disposed between the pair of connecting plates 12 and 14. The laminated body 16 includes a rubber disc 18 made of rubber that can be elastically deformed and a metal disc 20 made of stainless steel such as SUS304 that is a hard plate for maintaining rigidity. It has a structure in which multiple sheets are arranged in each.

  As shown in FIGS. 1 and 3, a pair of cylindrical spaces are formed in the rubber disc 18 by a pair of circular holes 18 </ b> A provided in a point symmetry with respect to the center point of the rubber disc 18. In each of these spaces, ring springs 22, which are spring materials formed in a ring shape having an outer diameter smaller than the inner diameter of the circular hole 18 </ b> A by about 10 mm and a square cross-section, are disposed. . Here, it is conceivable that the ring spring 22 is formed of a twinned metal material which is a metal material having a large damping.

  For this reason, the pair of ring springs 22 are arranged in the rubber disc 18 in a positional relationship that is point-symmetric with respect to the center point of the rubber disc 18. The rubber disc 18 is composed of a pair of rubber disc-like members 19A and a metal intermediate plate 19B disposed between them, and penetrates through these three members. The circular hole 18A is formed. In addition, it is possible to employ steel plates, such as SS material, as a material of this intermediate plate 19B.

  Each of the pair of ring springs 22 is provided with one cylindrical fixing pin 22A, which is a protrusion, on the front side in FIGS. 4 and 5, and the fixing pin 22A on the back side in FIG. 4 and FIG. Similarly, one cylindrical fixing pin 22B, which is a projection, is provided at a position 180 ° opposite to the position.

  In other words, in the present embodiment, the fixing pins 22A and 22B, which are engaging portions, are provided on two different surfaces of the ring spring 22 that are opposite to each other across the center of the ring spring 22. Will be. Accordingly, the two fixing pins 22 </ b> A and 22 </ b> B formed on the ring spring 22 are arranged so as to be point-symmetric with respect to the center of the ring spring 22.

  As shown in FIG. 1, the fixing pin 22A located on the front side of one ring spring 22 located on the near side is located near the center of the rubber disc 18 and the front side of the other ring spring 22 located on the far side. The fixing pin 22 </ b> A located at is located near the outer periphery of the rubber disk 18. Therefore, the fixing pin 22B located on the back side of one ring spring 22 is located near the outer periphery of the rubber disc 18, and the fixing pin 22B located on the back side of the other ring spring 22 is located near the center of the rubber disc 18. Will be located.

  Holes 20A are respectively provided at positions of the metal disk 20 corresponding to positions where the fixing pins 22A and 22B are arranged, and the metal disks 20 corresponding to the center hole 22C at the center of the ring spring 22 are provided. The guide pins 20B that are loosely fitted to the center hole 22C are planted at the positions.

  Accordingly, the fixing pin 22A on the front side of the ring spring 22 positioned by being guided by the guide pin 20B is fitted into the hole 20A of the metal disk 20 immediately above, and the fixing pin 22B on the back side of the ring spring 22 is also The hole 20A of the metal disk 20 directly below is fitted. At this time, the thickness of the pair of ring springs 22 is such that there is only a slight gap between the two upper and lower surfaces of the ring springs 22 facing each other and the metal discs 20 positioned above and below the ring springs 22. Is set. Specifically, when the seismic isolation device 10 is disposed between the ground and the building and a predetermined load is applied, the metal isolator 20 between the metal disk 20 and the ring spring 22 has a thickness of 0.1 mm or more. The gap D shown in FIG.

  As described above, in the present embodiment, the fixing pins 22A and 22B are respectively engaged with and engaged with the metal discs 20 respectively facing the two surfaces of the ring spring 22, and the pair of ring springs 22 is engaged. 1 unit S of a lamination | stacking is comprised by the rubber disc 18 which incorporated, and the two metal discs 20 etc. which are located above and below this rubber disc 18.

  Further, a plurality of sets of these ring springs 22 are arranged along the stacking direction of the stacked body 16 (the direction of the arrow Y in FIGS. 1 to 3). A line segment L shown in FIG. 1 that connects between a pair of arranged ring springs 22 and between fixing pins 22A and 22B of the ring springs 22 is sequentially formed at an angle of, for example, 36 ° for each layer arranged in the stacking direction of the stacked body 16. A pair of ring springs 22 are arranged in a deviated form.

  Therefore, since the seismic isolation device 10 according to the present embodiment has a structure in which a plurality of stacked units S are stacked, the two metal discs 20 constituting the stacked units S are shown in FIG. As shown in FIG. 5, a hole 20A is provided in which the fixing pins 22A and 22B of the ring spring 22 of the stack 1 unit S adjacent in the vertical direction are fitted, and the guide pin 20B is implanted.

  On the other hand, the pair of connecting plates 12 and 14 described above are attached by being vulcanized and bonded to rubber discs 18 positioned at the upper and lower ends of the laminate 16 as shown in FIG. The rubber discs 18 positioned at the upper and lower ends also incorporate a pair of ring springs 22 in the same manner as the other rubber discs 18, and the connecting plates in the fixing pins 22 </ b> A and 22 </ b> B of the pair of ring springs 22. The fixing pins that face 12 and 14 are engaged with and engaged with holes (not shown) provided in the connecting plates 12 and 14. However, it is good also as a structure which does not incorporate a pair of ring spring 22 in the rubber disc 18 located in this upper and lower end.

Next, the effect | action of the seismic isolation apparatus 10 which concerns on this Embodiment is demonstrated below.
According to the seismic isolation device 10 of the present embodiment, the laminated body 16 is produced by alternately laminating the elastic rubber disks 18 and the rigid metal disks 20. A pair of metal ring springs 22 are arranged in a rubber disc 18 that is in a plane, with the center line C of the laminate 16 interposed therebetween.

  However, fixing pins 22 </ b> A and 22 </ b> B, which are engaging portions, are provided on two different surfaces of the ring spring 22 in opposite positions with respect to the center of the ring spring 22. The fixing pins 22A and 22B are engaged with and engaged with the holes 20A of the metal disk 20 positioned opposite to the two surfaces of the ring spring 22, respectively.

  Further, in the present embodiment, a plurality of sets of these ring springs 22 are arranged along the stacking direction of the stacked body 16 (the direction of the arrow Y in FIGS. 1 to 3), but along the stacking direction of the stacked body 16. The ring springs 22 are arranged in such a manner that the positions of the plurality of ring springs 22 arranged in parallel and the fixing pins 22A and 22B provided on the ring springs 22 are sequentially shifted.

  When an earthquake occurs, a displacement in the horizontal direction A is input to the seismic isolation device 10, and each rubber disk 18 of the laminate 16 is deformed to face the two surfaces of the ring spring 22. Thus, a shift occurs between the two metal disks 20 positioned in the same position.

  At this time, since the fixing pins 22A and 22B provided on the ring spring 22 are engaged with the two metal discs 20 positioned opposite to the two surfaces of the ring spring 22, respectively, the two metals As the discs 20 are displaced from each other, the ring spring 22 in which the fixing pins 22A and 22B are arranged in parallel to the excitation direction is applied with a compressive stress and an extension stress, so that the ring spring 22 is not only deformed but also shaken back in the event of an earthquake. Sometimes the ring spring 22 is forced to return to a shape close to the original shape.

  At this time, since the two metal disks 20 are arranged on the upper and lower sides of the ring spring 22 with almost no gap, the ring spring 22 substantially undergoes compression deformation and expansion deformation in the plane thereof.

  As a result, not only the vibration is attenuated by deformation of the rubber disc 18 of the laminated body 16, but also when the ring spring 22 is deformed or returns to its original shape, the ring spring 22 attenuates the vibration. Even when the seismic isolation device 10 is repeatedly vibrated, vibrations similar to those at the time of the initial earthquake are damped. Therefore, according to the seismic isolation device 10 according to the present embodiment, even when an earthquake occurs, the earthquake is reliably caused by the combined action between the rubber disc 18 of the laminated body 16 and the ring spring 22 that are elastically deformed. The shaking of the earthquake is reduced and it becomes difficult to transmit the shaking of the earthquake to the building side.

  On the other hand, regarding the manufacture of the seismic isolation device 10, the fixing pins 22 </ b> A and 22 </ b> B are formed by casting or the like when the ring spring 22 is manufactured, and the drilling process in which the ring spring 22 enters the rubber disk 18 or the hole of the metal disk 20. Since the seismic isolation device 10 according to the present embodiment can be manufactured only by adding a simple process such as drilling 20A, etc., only a slight process, an increase in manufacturing cost of the seismic isolation device is also suppressed. become.

  As described above, in the seismic isolation device 10 according to the present embodiment, the metal ring spring 22 is disposed in the rubber disc 18 of the laminated body 16, and the ring springs are positioned in opposite positions with respect to the center of the ring spring 22. Fixing pins 22 </ b> A and 22 </ b> B provided on two mutually different surfaces of 22 are configured to engage with the hole 20 </ b> A of the metal disk 20.

  From this, an increase in the manufacturing cost of the seismic isolation device 10 is suppressed, and the vibration of the earthquake is reduced by a combined action between the laminate 16 and the ring spring 22 without using a lead material. As a result of obtaining vibration characteristics, it has vibration control characteristics equivalent to or better than those of conventional seismic isolation devices without imposing a burden on the environment.

  On the other hand, in the present embodiment, as shown in FIG. 3, a pair of ring springs 22 are present in the same plane of the multilayer body 16 with the center line C of the multilayer body 16 interposed therebetween, so that the vibration caused by the ring spring 22 is attenuated. The ability to do this not only increases, but vibration can be damped more efficiently with the seismic isolation device 10 having a small volume.

  Further, in the present embodiment, a plurality of ring springs 22 are arranged along the stacking direction of the stacked body 16, and the positions of the fixing pins 22 </ b> A and 22 </ b> B respectively provided on the plurality of ring springs 22 aligned in the stacking direction of the stacked body 16. Since the ring springs 22 are arranged in such a way that they are sequentially shifted, the ring springs 22 can attenuate the vibrations from any direction.

  Further, in the present embodiment, the spring material is a ring spring 22 formed in a ring shape, and fixing pins are respectively provided on two different surfaces of the ring spring 22 in opposite positions with respect to the center of the ring spring 22. 22A and 22B are provided. For this reason, as the spring material is changed to the ring-shaped ring spring 22, a large stress is applied to the inner peripheral surface of the ring spring 22 at the time of deformation. As a result, the ring spring 22 is appropriately deformed and vibration is further increased. Attenuation can be ensured.

  On the other hand, when the elastically deformable ring spring 22 is formed of a twinned metal material, when a tensile force or a shearing force is applied, the spring constant is lowered and the damping coefficient is increased, so that the conventional vibration damping is increased. It also has a large damping characteristic equivalent to or better than that of metal.

Next, a second embodiment of the seismic isolation device according to the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the member same as the member demonstrated in 1st Embodiment, and the duplicate description is abbreviate | omitted.
As shown in FIGS. 6 and 7, the seismic isolation device 10 of the present embodiment has substantially the same structure as that of the first embodiment, and the stacking direction of the stacked body 16 (the direction of the arrow Y in FIGS. 6 and 7). A plurality of pairs of ring springs 22 are disposed along the ring spring 22. The ring springs 22 arranged side by side along the stacking direction of the stacked body 16 and the fixing pins 22A and 22B provided on the ring springs 22 are mutually connected. In the present embodiment, a ring spring 22 is arranged in a shape facing the same direction.

  That is, in the present embodiment, the engaging portions are the fixing pins 22A and 22B, the hole 20A corresponding to the fixing pins 22A and 22B is provided in the metal disc 20, and the first is obtained by fitting them together. The same operational effects as those of the embodiment are obtained.

  Furthermore, in the present embodiment, as described above, the fixing pins 22A and 22B provided on the plurality of sets of ring springs 22 arranged side by side along the stacking direction of the stacked body 16 are oriented in the same direction. The ring spring 22 was disposed on the surface. With this, there is a direction that particularly needs to dampen vibration, and when this direction is the arrow X direction shown in FIG. 7, by making the direction in which the fixing pins 22A and 22B face each other match that direction, The vibration in this direction can be actively damped.

Next, a third embodiment of the seismic isolation device according to the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the member same as the member demonstrated in 1st Embodiment, and the duplicate description is abbreviate | omitted.
According to the seismic isolation device 10 of the present embodiment, a plurality of ring springs 22 are arranged along the stacking direction of the stacked body 16 as in the first embodiment. Unlike the above embodiment, as shown in FIG. 8, only one ring spring 22 which is positioned along the stacking direction of the stacked body 16 (the direction of the arrow Y in FIG. 8), for example, is stacked in the same plane. The shape is arranged on the center line of the body 16. In this embodiment, the ring spring 22 is arranged so that the positions of the fixing pins 22A and 22B provided on the ring spring 22 are sequentially shifted, for example.

  Therefore, in the present embodiment, although the number of the ring springs 22 is one, the hole 20A corresponding to the fixing pins 22A and 22B of the ring spring 22 is provided in the metal disc 20, and the first is obtained by fitting them. The same operational effects as those of the embodiment are obtained.

Next, a fourth embodiment of the seismic isolation device according to the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the member same as the member demonstrated in 1st Embodiment, and the duplicate description is abbreviate | omitted.
According to the seismic isolation device 10 of the present embodiment, similarly to the first embodiment, the rubber disk 18 and the metal circle along the stacking direction of the stacked body 16 (the arrow Y direction in FIGS. 9 and 10). A plurality of plates 20 are alternately arranged, but unlike the first embodiment, as shown in FIGS. 9 and 10, in this embodiment, the rubber disk 18 is formed into a single layer. It has become.

  That is, in the first embodiment, the rubber disk 18 is constituted by the pair of rubber disk-like members 19A and the metal intermediate board 19B disposed between them. On the other hand, in the present embodiment, the rubber disc 18 is formed on an integral rubber member without the metal intermediate plate 19B. Therefore, in the present embodiment, the same effects as those of the first embodiment can be obtained. In addition, the structure of the seismic isolation device 10 is further simplified, so that the manufacturing becomes easier. Manufacturing costs have been reduced.

  On the other hand, in each of the embodiments described above, the ring spring 22 is formed in an annular shape as shown in FIGS. 4 and 5, but a rectangular ring spring 22 as shown in FIG. 11 may be used as a modification of the spring material. .

Next, a fifth embodiment of the seismic isolation device according to the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the member same as the member demonstrated in 1st Embodiment, and the duplicate description is abbreviate | omitted.
According to the seismic isolation device 10 of the present embodiment, a plurality of pairs of spring materials are arranged along the stacking direction of the stacked body 16 as in the first embodiment, but the first embodiment In FIG. 12 to FIG. 14, the spring material is constituted by a C-shaped spring 32 formed in a C shape, unlike the spring material constituted by the ring spring 22.

  Each of the pair of C-shaped springs 32 is provided with one cylindrical fixing pin 32A as a protrusion on the front side of one end which is one of the release ends in FIGS. A cylindrical fixing pin 32B, which is also a protrusion, is provided at one end on the other side of the C-shaped spring 32, which is the other end facing the one end in FIG. Further, in the present embodiment, the angle θ between the fixing pin 32A and the fixing pin 32B around the center of the arc-shaped center hole 32C of the C-shaped spring 32 is 180 ° or more and 300 ° or less. The angle is

  In other words, in the present embodiment, the fixing pins 32A that are the engaging portions on the two different surfaces of the C-shaped spring 32 that are opposite to each other across the center of the C-shaped spring 32. , 32B are provided. A hole 20A corresponding to the fixing pins 32A and 32B of the C-shaped spring 32 is provided in the metal disk 20, and the structure is configured to fit them in the same manner as in the first embodiment.

  From the above, as the spring material is changed to a C-shaped C-shaped spring 32 having a shape in which a part of the ring is released, the inner surface of the C-shaped spring 32 formed in a C-shape at the time of deformation is formed. As a result, a large amount of stress is applied, and as a result, the spring material is appropriately and largely deformed so that the vibration can be more reliably damped, and the same effects as those of the first embodiment can be obtained.

  Specifically, for example, when the spring material is a C-shaped C-shaped spring 32, the C-shaped spring 32 not only maintains the initial damping, but also increases the height dimension of the seismic isolation device 10 to 100. %, Even if the laminated body 16 is deformed to a displacement of about 400% along the horizontal direction A of the seismic isolation device 10 which is a larger displacement, the C-shaped spring 32 is not damaged and the vibration is attenuated. become.

  On the other hand, in each of the above embodiments, for example, a Cu—Al—Mn alloy, a Mg—Zr alloy, a Mn—Cu alloy, a Mn—Cu—Ni—Fe alloy, a Cu—Al—Ni alloy, a Ti—Ni alloy, Al -Zn alloy, Cu-Zn-Al alloy, Mg alloy, Cu-Al-Co alloy, Cu-Al-Mn-Ni alloy, Cu-Al-Mn-Co alloy, Cu-Si alloy, Fe-Mn-Si alloy , Fe-Ni-Co-Ti alloy, Fe-Ni-C alloy, Fe-Cr-Ni-Mn-Si-Co alloy, Ni-Al alloy, or SUS304 is used as a twinned metal material. It is possible.

  That is, any one of these metals is used as a twin metal material for forming the ring spring 22 or the C-shaped spring 32, so that vibration suppression equal to or higher than that of the conventional one is provided without giving a load to the environment. The ring spring 22 and the C-shaped spring 32 having characteristics can be obtained more reliably.

  For example, when a manganese-based alloy such as an Mn—Cu alloy or an Mn—Cu—Ni—Fe alloy is used, it is held at a temperature of 800 ° C. to 930 ° C. for about 0.5 to 2 hours for 10 hours. And then slowly cooling for about 20 hours to obtain a twinned metal material.

  Also, Cu-Al-Mn alloy, Cu-Al-Ni alloy, Cu-Zn-Al alloy, Cu-Al-Co alloy, Cu-Al-Mn-Ni alloy, Cu-Al-Mn-Co alloy, Cu- When using a copper-based alloy such as Si alloy, hold at a temperature of about 900 ° C. for about 5 minutes to 1 hour, rapidly cool, then reheat to a temperature of about 200 ° C. for about 15 to 30 minutes By holding, a twinned metal material can be obtained.

Next, the mechanism of deformation of the ring spring 22 and the C-shaped spring 32 due to twinning will be described below.
By applying stress from the lateral direction to the martensite phase in which the metal atoms shown in FIG. 15A are uniformly aligned, deformation starts as shown in FIG. Further, when the stress continues to be applied, the shape is deformed as shown in FIG. In the state shown in FIG. 15C, the deformation amount of the dimension S is generated.

  On the other hand, in the general metal shown in FIG. 16A, the atoms are uniformly aligned. However, when stress is applied from the lateral direction, the atoms are not aligned as shown in FIG. 16B. Occurs and a defect occurs. That is, when a deviation occurs in the arrangement of atoms in a general metal, plastic deformation occurs. Therefore, once the state shown in FIG. 16B is reached, the state shown in FIG. 16A does not return. .

  As described above, unlike a general metal, a twinned metal material starts deformation with a relatively small stress, but does not undergo plastic deformation even when deformed to the state shown in FIG. If the process is reversed, the state shown in FIG. Furthermore, by reducing the cross-sectional area of the twin metal material so that the deformation is generated from the stage where the stress applied to the whole is low, the spring constant of hysteresis in the stress strain curve applied to the entire is not increased.

  In each of the above embodiments, the number of spring materials is one or two in the same plane, but three or more spring materials may be used. Furthermore, in the above embodiment, a twinned metal material is used as the material of the spring material. However, as the spring material, a high damping material such as XM7, which is a material close to ferrous stainless steel, and other general other materials are used. A metal material may be adopted.

  In each of the above embodiments, the ratio of the area of the space for accommodating the ring spring or the C-shaped spring in the area of the rubber disk constituting the laminated body is 15% or less. This is reasonable in terms of avoiding the decline. Although the number of ring springs and C-shaped springs is arbitrary, it is conceivable that the inner diameter of the ring spring or C-shaped spring is 20% or more of the outer diameter.

  On the other hand, in each of the above-described embodiments, the ring spring or C-shaped spring, which is a spring material, has a quadrangular cross-sectional shape. The cross-sectional area of the peripheral portion is increased from that of the circular cross section, and the strength of the ring spring or C-shaped spring is also improved.

It is a principal part disassembled perspective view of the seismic isolation apparatus which concerns on the 1st Embodiment of this invention. It is a perspective view of the seismic isolation apparatus which concerns on the 1st Embodiment of this invention. It is a principal part expanded sectional view of the seismic isolation apparatus which concerns on the 1st Embodiment of this invention. It is a figure which shows the ring spring applied to the seismic isolation apparatus which concerns on the 1st Embodiment of this invention, Comprising: (A) is a top view, (B) is a side view. It is a perspective view which shows the ring spring applied to the seismic isolation apparatus which concerns on the 1st Embodiment of this invention. It is a principal part disassembled perspective view of the seismic isolation apparatus which concerns on the 2nd Embodiment of this invention. It is a principal part expanded sectional view of the seismic isolation apparatus which concerns on the 2nd Embodiment of this invention. It is a principal part disassembled perspective view of the seismic isolation apparatus which concerns on the 3rd Embodiment of this invention. It is a principal part disassembled perspective view of the seismic isolation apparatus which concerns on the 4th Embodiment of this invention. It is a principal part expanded sectional view of the seismic isolation apparatus which concerns on the 4th Embodiment of this invention. It is a perspective view which shows the modification of the ring spring applied to the seismic isolation apparatus which concerns on the 1st to 4th embodiment of this invention. It is a principal part disassembled perspective view of the seismic isolation apparatus which concerns on the 5th Embodiment of this invention. It is a figure which shows the C-shaped spring applied to the seismic isolation apparatus which concerns on the 5th Embodiment of this invention, Comprising: (A) is a top view, (B) is a side view. It is a perspective view which shows the C-shaped spring applied to the seismic isolation apparatus which concerns on the 5th Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing showing the atomic arrangement | sequence of the ring spring which concerns on embodiment of this invention, or a C-shaped spring, Comprising: (A) is a figure showing a martensitic phase, (B) is the state which the deformation | transformation started in the martensitic phase (C) is a figure showing the state which the deformation | transformation of the martensite phase was finished. It is explanatory drawing showing the atomic arrangement | sequence of a general metal, Comprising: (A) is a figure showing the state in which the atom was arranged uniformly, (B) represents the state which the shift | offset | difference produced in a part of arrangement | sequence of an atom. FIG.

Explanation of symbols

10 Seismic isolation device 16 Laminate 18 Rubber disc (elastic plate)
20 Metal disc (hard plate)
20A Hole 22 Ring spring (spring material)
22A Fixing pin (engagement part)
22B Fixing pin (engagement part)
32 C-shaped spring (spring material)
32A fixing pin (engagement part)
32B Fixing pin (engagement part)

Claims (8)

A laminate in which elastic plates having elasticity and rigid plates having rigidity are alternately laminated;
A metal spring material disposed in the elastic plate;
A seismic isolation device having
Engagement portions are provided on the surfaces opposite to each other across the center of the spring material and on the mutually different surfaces of the spring material, and these hard plates are positioned respectively facing the two surfaces of the spring material. A seismic isolation device characterized by engaging portions.   The seismic isolation device according to claim 1, wherein the spring material is formed in a ring shape.   The seismic isolation device according to claim 1, wherein the spring material is formed in a C shape.   2. The seismic isolation device according to claim 1, wherein a pair of spring members are present on the same plane of the laminate with the center line of the laminate being interposed therebetween. In the state where the engaging portion of the spring material is a protrusion and a hole is provided in the hard plate, and the protrusion of the spring material is fitted in the hole of the hard plate, the spring material is moved along the stacking direction of the laminate. Place multiple
2. The seismic isolation device according to claim 1, wherein the spring material is arranged in such a manner that the positions of the protrusions respectively provided on the spring material positioned side by side in the stacking direction are sequentially shifted. In the state where the engaging portion of the spring material is a protrusion and a hole is provided in the hard plate, and the protrusion of the spring material is fitted in the hole of the hard plate, the spring material is moved along the stacking direction of the laminate. Place multiple
The seismic isolation device according to claim 1, wherein the spring material is arranged in such a manner that the protrusions provided on the spring material positioned side by side along the stacking direction face each other in the same direction.   2. The seismic isolation device according to claim 1, wherein the spring material is formed of a twinned metal material. Cu-Al-Mn alloy, Mg-Zr alloy, Mn-Cu alloy, Mn-Cu-Ni-Fe alloy, Cu-Al-Ni alloy, Ti-Ni alloy, Al-Zn alloy, Cu-Zn-Al alloy, Mg alloy, Cu-Al-Co alloy, Cu-Al-Mn-Ni alloy, Cu-Al-Mn-Co alloy, Cu-Si alloy, Fe-Mn-Si alloy, Fe-Ni-Co-Ti alloy, Fe 8. The exemption according to claim 7, wherein any one of -Ni-C alloy, Fe-Cr-Ni-Mn-Si-Co alloy, Ni-Al alloy, and SUS304 is used as a twinned metal material. Seismic device.

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