JP2007113771A - Base isolation device and method of manufacturing base isolation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a base isolation device having damping property equal to or more excellent than the prior art without harmful effects on environments. <P>SOLUTION: An outer laminated body 16 is formed by alternately laminating a plurality of elastically deformable rubber rings 18 and a plurality of metal rings 20 for maintaining the rigidity. Wire materials 22A, 24A having rectangular cross-sectional shapes are formed into elastically deformable spiral coil springs 22, 24 having outer diameters different from each other. The coil springs 22, 24 are arranged in the outer laminated body 16. Each metal ring 20 is provided with a through hole 40 having a shape in conformity with the shapes of the corresponding parts of the coil springs 22, 24 so that a spiral hole 42 corresponding to the overall shape of the coil springs 22, 24 exists at the central portion of the outer laminated body 16. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a seismic isolation device having a vibration damping characteristic equal to or higher than that of a conventional one without giving a load to the environment, and a method of manufacturing the seismic isolation device for manufacturing such a seismic isolation device.

  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. This seismic isolation device is composed not only of a laminated rubber obtained by laminating a rubber plate and a laminated plate, but also a damping alloy for suppressing vibrations caused by shaking, and the combined action of these members. It reduced the shaking of the earthquake and made it difficult to transmit the shaking of the earthquake to the building side.

  However, lead materials are generally used as damping alloys for conventional seismic isolation devices from the standpoint of damping characteristics. However, as environmental considerations have become increasingly important in recent years, they should be replaced with other materials. Began to be considered.

For this reason, instead of using a damping material made of lead material, a structure in which a normal coil spring having a circular cross-sectional shape is inserted into a laminated rubber so as to obtain a sufficient damping effect and a damping force is generated. The following seismic isolation device of Patent Document 1 has been considered.
JP-A-11-270621

  From the above, it has become necessary to develop a damping alloy used in a seismic isolation device that has a damping characteristic equal to or higher than that of a conventional damping alloy without imposing a load on the environment. However, in the seismic isolation device of Patent Document 1 that employs a normal coil spring in which the cross-sectional shape of the wire is circular, a sufficient amount of attenuation cannot be obtained.

  Therefore, it is conceivable to increase the wire diameter, which is the diameter of the coil spring wire, in order to increase the amount of attenuation. However, if the wire diameter is simply increased, the rigidity becomes too high, and as a component of laminated rubber There was a possibility of destroying the laminated plate arranged on the outer peripheral side of the coil spring. For this reason, the method of simply increasing the wire diameter of the coil spring cannot be adopted.

On the other hand, when a normal coil spring is adopted, the coil spring is deformed as a horizontal displacement is applied to the seismic isolation device. For example, in the first large displacement, a rotational force is generated in the laminated rubber and the coil spring is deformed. There was a possibility that would collapse. In other words, if the coil spring collapses and falls within the seismic isolation device due to a large displacement, the damping force generated by the seismic isolation device decreases, and as a result, stable damping performance cannot be maintained and sufficient damping effect is achieved. Has a disadvantage that cannot be obtained.
In view of the above facts, an object of the present invention is to provide a seismic isolation device having a vibration control characteristic equal to or higher than that of a conventional one without giving a load to the environment, and a method for manufacturing the seismic isolation device.

The seismic isolation device according to claim 1 includes an outer laminated body in a form in which outer elastic plates having elasticity and outer hard plates having rigidity are alternately laminated,
A metal coil spring disposed in the outer laminate;
A seismic isolation device having
Each outer elastic plate and each outer hard plate are each provided with a through hole having a shape corresponding to the shape of the corresponding portion of the coil spring, and a spiral hole portion corresponding to the entire shape of the coil spring exists in the outer laminate. It is characterized by that.

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 metal coil spring is disposed in the outer laminated body in which the outer elastic plate having elasticity and the outer hard plate having rigidity are alternately laminated. However, each outer elastic plate and each outer hard plate are provided with through holes having a shape corresponding to the shape of the corresponding portion of the coil spring, so that the outer laminated body corresponds to the overall shape of the coil spring. It has a configuration in which a spiral hole exists.

  In other words, in this claim, as the horizontal displacement is input to the seismic isolation device, the outer laminated body and the metal coil spring are deformed in accordance with the input of the displacement. Through-holes that match the shape of the part are provided not only on each outer elastic plate, but also on each outer hard plate, so that the coil spring wire is constrained by the inner peripheral surface of the through-hole on each outer hard plate Thus, the outer hard plate can prevent the coil spring from falling down.

  As a result, even if a large horizontal displacement is applied to the seismic isolation device, the coil spring is reliably prevented from being crushed, so that stable damping performance is exhibited even after repeated displacement, and the damping performance is kept stable. be able to. Therefore, according to the seismic isolation device according to the present claim, even in the event of an earthquake, the earthquake is reliably caused by the combined action between the outer laminated body and the coil spring that are arranged in parallel to each other and elastically deformed. The shaking of the earthquake is reduced and it becomes difficult to transmit the shaking of the earthquake to the building side.

  From the above, the seismic isolation device according to the present invention is not limited to simply arranging the metal coil spring in the outer laminated body, but the wire material of the coil spring is restrained by the inner peripheral surface of the through hole of each outer hard plate, The movement of the coil spring can be restricted. Therefore, since the vibration damping characteristics as described above can be obtained without using a lead material, the vibration damping characteristics are equal to or higher 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 aspect and operates in the same manner. Further, the coil spring is a plurality of coil springs each having a rectangular cross-sectional shape and different outer diameters. It has a configuration.

  In other words, according to the present claim, as the horizontal displacement is input to the seismic isolation device, each of the plurality of coil springs having a rectangular cross-sectional shape and different outer diameters is deformed in accordance with the input of the displacement. However, at this time, the adjacent surfaces of the wire rods having a quadrangular cross-sectional shape come into contact with each other, so that the wire rods are restrained. For this reason, since the mutual wire rods are restrained and restrain the movement of the coil spring, the coil spring can be prevented from falling down.

  As a result, even if a large horizontal displacement is applied to the seismic isolation device, the coil spring is more reliably prevented from being crushed. Therefore, more stable damping performance is exhibited even after repeated displacement, and the damping performance is stable. Can be kept in.

  As described above, according to the seismic isolation device of the present invention, the coil spring is a plurality of coil springs having a square cross-sectional shape of the wire material and different outside diameters, so that the earthquake vibration is reliably reduced and the building is constructed. The effect of making it difficult for earthquake vibration to be transmitted to the object side is increased, and the operation according to claim 1 can be more reliably achieved.

The effect | action of the seismic isolation apparatus which concerns on Claim 3 is demonstrated below.
The present invention has the same configuration as that of the second embodiment and operates in the same manner, but further has a configuration in which a plurality of coil springs are coaxially combined and arranged in the outer laminated body. That is, since a plurality of coil springs are coaxially combined with each other and arranged in the outer laminated body, even in a small space in the outer laminated body, a coil spring having a relatively large spring constant is utilized to the maximum extent. A plurality of coil springs can be arranged, and as a result, more coil springs can be arranged in a space of the same volume.

  Since a plurality of coil springs are coaxially combined and arranged, the spring constant of each coil spring increases as the length of one coil spring decreases. Furthermore, by changing the number of coil springs to be superimposed, the apparent spring constant of the form in which the spring constants of the coil springs are added can be easily adjusted according to the required damping force.

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 second aspect and operates in the same manner, but further has a configuration in which the cross-sectional shape of the wire constituting the coil spring is a rectangle having a long side in the radial direction of the coil spring. is doing.

  In other words, by making the cross-sectional shape of the wire rod a rectangle whose long side is the radial direction of the coil spring, in particular, the adjacent surfaces of the wire rod having a cross-sectional shape of a rectangular shape are more reliably in contact with each other. The mutual wire rods of the coil springs are restrained and can prevent the coil springs from falling down more reliably.

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 embodiment and operates in the same manner, but further has a configuration in which the wire constituting the coil spring is formed of a twinned metal material. In other words, in this claim, as the wire constituting the helical coil spring that can be elastically deformed is formed of a twin metal material, the twin metal material constituting the coil spring is prestrained. Therefore, when a tensile force or shear force is applied, the spring constant becomes lower and the damping coefficient becomes higher than that of a simple twin alloy. It has characteristics.

The operation of the seismic isolation device according to claim 6 will be described below.
This claim has the same configuration as that of claim 5 and operates in the same manner, but further includes a Cu—Al—Mn alloy, a Mg—Zr alloy, a Mn—Cu alloy, a 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 the wire constituting the coil spring, so that vibration suppression characteristics equal to or higher than those of conventional ones can be obtained without giving a load to the environment. The coil spring which has can be obtained more reliably.

The operation of the seismic isolation device according to claim 7 will be described below.
In this claim, it has the same configuration as in claim 1 and operates in the same way, but further, a support member is arranged at the end of the outer laminate, and a groove portion shaped to match the shape of the corresponding portion of the coil spring is provided. The support member is configured to be formed.

  That is, when the space between the end portion of the coil spring and the support member that is the portion of the seismic isolation device facing the end portion is not constrained, there is a possibility that the deformation of the coil spring cannot appropriately follow the displacement of the seismic isolation device. As a result, it was considered that the hysteresis of the stress-strain curve did not become sufficiently large and high attenuation characteristics could not be obtained.

  Therefore, in this claim, the end of the coil spring is mechanically constrained to the support member by inserting the end of the coil spring into the groove having a shape corresponding to the shape of the corresponding portion of the coil spring and fixing it to the support member. Thus, the deformation of the coil spring is forced to follow the displacement of the seismic isolation device. As a result, according to the seismic isolation device of the present claim, a higher damping characteristic can be obtained by more reliably restraining the movement of the coil spring.

The operation of the seismic isolation device according to claim 8 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, a restraining member harder than the outer elastic plate is filled in the spiral hole provided in the outer laminated body. It has the structure of.

  In other words, according to the present invention, the constraining member harder than the outer elastic plate is filled in the spiral hole, so that the gap between the coil spring disposed in the spiral hole and the hole is used for the restraint. In addition to being buried by the member, the restraining member is made harder than the outer elastic plate, so that the rattling of the coil spring in the hole is surely eliminated, and the deformation of the coil spring is reliably followed by the displacement of the seismic isolation device. It became possible to make it. As a result, even with the seismic isolation device according to the present claims, even higher damping characteristics can be obtained.

The manufacturing method of the seismic isolation device according to claim 9 is to produce a plurality of rigid outer rigid plates while providing through holes in a shape that matches the shape of the corresponding part of the coil spring,
Next, a plurality of outer hard plates and elastic materials that can become outer elastic plates are alternately arranged so that the through holes of the outer hard plate are arranged in the form of spiral holes that are in the form of coil springs. Laminate to form an outer laminate,
Thereafter, the coil spring is inserted into the outer laminated body along the spiral hole.

The effect | action of the manufacturing method of the seismic isolation apparatus which concerns on Claim 9 is demonstrated below.
According to the manufacturing method of the seismic isolation device of this claim, after producing a plurality of outer hard plates provided with through holes having a shape corresponding to the shape of the corresponding part of the coil spring, the outer hard plate and the outer elastic plate are formed. An outer laminate is formed by alternately laminating a plurality of possible elastic materials. Thereafter, the seismic isolation device is completed by inserting a coil spring along the spiral hole into the outer laminated body.

  In this claim, when the outer hard plate and the elastic material that can become the outer elastic plate are alternately laminated, a spiral hole portion in which the through hole of the outer hard plate is formed into a coil spring is formed. I decided to place it in the existing form. Therefore, when a horizontal displacement is input to the completed seismic isolation device, the outer laminated body and the metal coil spring are deformed in accordance with the input of the displacement, but at this time, the shape of the corresponding part of the coil spring is changed. Since the combined through holes are provided in each outer hard plate, the coil spring wire is restrained by the inner peripheral surface of the through hole of each outer hard plate, and the coil spring can be prevented from falling over by this outer hard plate. It becomes like this.

  From the above, the seismic isolation device completed according to the present claim can restrain the movement of the coil spring by restraining the wire of the coil spring by the inner peripheral surface of the through hole of each outer hard plate as in the first aspect. Become. Therefore, since it becomes possible to obtain the vibration damping characteristics similar to those of claim 1 without using a lead material, the seismic isolation apparatus having a vibration damping characteristic equivalent to or higher than that of a conventional seismic isolation apparatus without giving a load to the environment. Become.

The effect | action of the manufacturing method of the seismic isolation apparatus which concerns on Claim 10 is demonstrated below.
In this claim, it has the same configuration as in claim 9 and acts in the same way, but after inserting the coil spring along the spiral hole of the outer laminate, the elastic material is vulcanized and molded, This elastic material is configured as an outer elastic plate. That is, in the present claim, for example, when the outer elastic plate is formed of a rubber material, the unvulcanized rubber material is vulcanized and molded to function reliably as the outer elastic plate.

The effect | action of the manufacturing method of the seismic isolation apparatus which concerns on Claim 11 is demonstrated below.
In this claim, it has the same configuration as in claim 9 and acts in the same way, but after inserting the coil spring along the spiral hole of the outer laminate, the elastic material is vulcanized and molded, The elastic material is used as an outer elastic plate, and a constraining member harder than the outer elastic plate is filled in a gap between the coil spring in the spiral hole.

  In other words, in this claim, in the final stage of manufacturing the seismic isolation device, by filling the helical hole with a restraining member harder than the outer elastic plate, in the seismic isolation device manufactured by this manufacturing method, As in the eighth aspect, higher attenuation characteristics can be obtained.

The manufacturing method of the seismic isolation device according to claim 12 is to produce a plurality of rigid outer rigid plates while providing through holes in a shape that matches the shape of the corresponding part of the coil spring,
Next, a plurality of outer hard plates and an elastic material that can be an outer elastic plate are alternately stacked around the coil spring to form an outer laminated body having a built-in coil spring.

The effect | action of the manufacturing method of the seismic isolation apparatus which concerns on Claim 12 is demonstrated below.
According to the method for manufacturing a seismic isolation device of this claim, after producing a plurality of outer hard plates provided with through holes having a shape corresponding to the shape of the corresponding portion of the coil spring, this rigidity is provided around the coil spring. The seismic isolation device is completed by alternately laminating a plurality of outer hard plates and elastic materials that can become outer elastic plates.

  According to the present invention, a spiral hole that is formed in the shape of a coil spring is formed by alternately laminating a plurality of outer hard plates and an elastic material that can be an outer elastic plate around the coil spring. In addition, the outer laminated body in which the coil spring is incorporated is formed while the through hole of the outer hard plate is disposed.

  Therefore, when a horizontal displacement is input to the completed seismic isolation device, the outer laminated body and the metal coil spring are deformed in accordance with the input of the displacement, but at this time, the shape of the corresponding part of the coil spring is changed. Since the combined through holes are provided in each outer hard plate, the coil spring wire is restrained by the inner peripheral surface of the through hole of each outer hard plate, and the coil spring can be prevented from falling over by this outer hard plate. It becomes like this.

  From the above, the seismic isolation device completed according to the present claim can restrain the movement of the coil spring by restraining the wire of the coil spring by the inner peripheral surface of the through hole of each outer hard plate as in the first aspect. Become. Therefore, as in the case of claim 10, the seismic isolation device has a vibration control characteristic equal to or higher than that of the conventional seismic isolation device without giving a load to the environment.

The effect | action of the manufacturing method of the seismic isolation apparatus which concerns on Claim 13 is demonstrated below.
The present invention has the same configuration as that of the twelfth aspect and operates in the same manner. However, after forming the outer laminated body having a built-in coil spring, the elastic material is vulcanized and the elastic material is placed outside. It has a configuration of an elastic plate. That is, in the present claim, as in the case of the tenth aspect, when the outer elastic plate is formed of a rubber material, for example, the unvulcanized rubber material is vulcanized and molded so as to function reliably as the outer elastic plate. Become.

The effect | action of the manufacturing method of the seismic isolation apparatus which concerns on Claim 14 is demonstrated below.
The present invention has the same configuration as that of the twelfth aspect and operates in the same manner. However, after forming the outer laminated body having a built-in coil spring, the elastic material is vulcanized and the elastic material is placed outside. In addition to the elastic plate, the constraining member harder than the outer elastic plate is filled in the gap between the coil spring in the outer laminated body.

  That is, in this claim, even in the final stage of manufacturing the seismic isolation device, the seismic isolation device manufactured by this manufacturing method by filling the outer laminated body with a restraining member harder than the outer elastic plate is also claimed. As in the case of FIG. 8, higher attenuation characteristics can be obtained.

  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 a damping characteristic equal to or higher than that of the conventional one without giving a load to the environment and a method for manufacturing the seismic isolation device. .

  A first embodiment of a seismic isolation device and a method for manufacturing the same according to the present invention will be described with reference to FIGS. As shown in FIG. 1, the upper and lower portions of the seismic isolation device 10 according to the first embodiment of the present invention 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.

  In the center portion of the seismic isolation device 10, a coil spring 22 in which a wire rod 22A having a rectangular cross section is formed of a twin metal material in the shape of a spiral coil spring that can be elastically deformed, and a twin metal material are also used. Thus, the coil springs 24 formed in the shape of spiral coil springs that can elastically deform the wire rods 24A having a rectangular cross-sectional shape are arranged so as to be coaxial with each other. However, the coil spring 22 and the coil spring 24 have different outer diameters, and the outer diameter of the coil spring 22 is larger than the outer diameter of the coil spring 24.

  In other words, in the present embodiment, the cross-sectional shapes of the wire rods 22A and 24A constituting the two coil springs 22 and 24, respectively, are rectangles having a long side in the radial direction R of the coil springs 22 and 24 in the quadrangular shape. . The Young's modulus of the wire rods 22A and 24A is, for example, about 47 GPa, and the pitches of the two coil springs 22 and 24 are considered to be substantially the same, but may be different from each other. .

  In addition, an outer laminated body 16 formed in a cylindrical shape is disposed between the pair of connecting plates 12 and 14. And this outer laminated body 16 is made up of rubber ring 18 made of rubber that is an outer elastic plate that can be elastically deformed, and metal ring 20 made of metal such as a steel plate that is an outer hard plate for maintaining rigidity. It has a structure in which multiple sheets are arranged in each.

  However, each rubber ring 18 and each metal ring 20 are provided with through-holes 38 and 40 each having a shape corresponding to the shape of the corresponding portion of the coil springs 22 and 24. A spiral hole 42, which is a spiral hole corresponding to the entire shape of 24, is present along the stacking direction (the arrow Y direction in FIG. 1) at the center of the outer stacked body 16.

  That is, through holes 40 each having a large diameter portion 40A and a small diameter portion 40B formed coaxially with each other are formed at the center of each metal ring 20, as shown in FIG. And the through-hole 38 in which the large diameter part 38A and the small diameter part 38B which were mutually formed coaxially exists also in the center part of each rubber ring 18, respectively. As a result of the above, in the present embodiment, as shown in FIG. 1, the inner peripheral surface of the outer laminated body 16 is formed in a concavo-convex shape in accordance with the outer peripheral surface side shape of the plurality of two coil springs 22, 24. It has a structure.

  On the other hand, as shown in FIG. 1, the pair of connecting plates 12 and 14 are attached to the upper and lower ends of the outer laminated body 16 by vulcanization bonding. In the center, circular through holes 12A and 14A each having a stepped portion in the middle are formed. However, the lid member 32 having a size corresponding to the through holes 12A and 14A and having a flange on the outer peripheral side is fixed to the pair of connecting plates 12 and 14 by screwing with bolts 34, respectively. The through holes 12A and 14A are closed.

  An elastic member 26 made of hard urethane that can restrain the movement of the coil springs 22 and 24 along the deformation of the outer laminate 16 is disposed in the hollow portion 28 inside the two coil springs 22 and 24. Has been.

  As described above, in the seismic isolation device 10 according to the present embodiment, the outer laminated body 16 that can be elastically deformed is coil springs 22 and 24 that are spirally formed so as to be elastically deformable by a twinned metal material, The structure is arranged in parallel. And the height in the free state of the coil springs 22 and 24 is made higher than the height of the outer side laminated body 16, and coil springs 22 and 24 are assembled | attached in the outer side laminated body 16 shown in FIG. In this state, the coil springs 22 and 24 are compressed, and a pre-strain is applied to the coil springs 22 and 24.

  As shown in FIG. 2, the height H of the coil springs 22 and 24 in the state of being incorporated in the seismic isolation device 10 is, for example, 65 mm, the outer diameter D1 of the coil spring 22 is, for example, 63 mm, and the outer diameter of the coil spring 24 D1 is set to 44 mm, for example, but the outer diameter ratio of these two coil springs 22 and 24 is considered to be appropriate in the range of about 5: 4 to 5: 2.5. The pitches P of the wire rods 22A and 24A constituting the coil springs 22 and 24 are each 12 mm, for example, the plate thickness dimension T of the wire rods 22A and 24A is 4 mm, for example, and the plate width dimension D of the wire rod 22A is 16 mm, for example. The plate width dimension D of the wire rod 24A is, for example, 12 mm.

  As a result, even when the maximum amount of displacement expected in the horizontal direction A occurs in the coil springs 22, 24, the surface of the wire rod 22A of the coil spring 22 and the surface of the wire spring 24A of the coil spring 24 adjacent to the wire rod 22A In contact with each other, the wire rods 22A and 24A come to be restrained.

Next, the procedure of the method for manufacturing the seismic isolation device 10 according to the present embodiment will be described below.
When the seismic isolation device 10 is manufactured, first, two coil springs 22 and 24 each having a spiral shape and having different outer diameters are manufactured by using wire rods 22A and 24A each having a rectangular cross-sectional shape, and Mn-Cu- In the case of a Ni—Fe alloy, it is held at a temperature of about 850 ° C. for about 1 hour and then slowly cooled by air cooling. In the case of a Cu—Al—Mn—Co alloy, the temperature is about 900 ° C. for about 5 minutes. After being held, rapidly cooled and then reheated, held at 200 ° C. for about 15 minutes, and then cooled by air, whereby twin coil springs 22 and 24 can be obtained.

  On the other hand, a plurality of rigid metal rings 20 are produced by pressing or the like. At this time, as shown in FIG. 4A, the shape is adjusted to the shape of the corresponding portions of the coil springs 22 and 24. A through hole 40 having a large-diameter portion 40A and a small-diameter portion 40B that are coaxially formed with each other is provided in the central portion of the metal ring 20, respectively. Similarly, a plurality of elastic materials 18A that can become the rubber ring 18 are produced. At this time, as shown in FIG. 4B, the through hole 38 in which the large diameter portion 38A and the small diameter portion 38B exist is elastically formed. It will be provided respectively in the center of the material 18A.

  Next, as shown in FIG. 5, the outer laminated body 16 is formed by alternately laminating a plurality of metal rings 20 and elastic materials 18 </ b> A that can become rubber rings 18. In this case, the metal ring 20 These through holes 40 and the through holes 38 of the elastic material 18A are laminated so that the spiral holes 42 in the shape of the coil springs 22 and 24 exist. That is, the metal rings 20 and the elastic material 18A are laminated while sequentially turning the metal rings 20 and the rubber rings 18 so that the directions of the through holes 40 and 38 are sequentially shifted. Then, the pair of connecting plates 12 and 14 are respectively attached to the upper and lower sides of the outer laminate 16.

  Thereafter, the wire rod 24A of the coil spring 24 having an outer diameter smaller than that of the coil spring 22 is screwed between the wire rods 22A of the coil spring 22 so that the wire rod 22A of the other coil spring is inserted between the wire rods 22A and 24A of the coil springs 22 and 24 described above. The coil springs 22 and 24 in the combined state are inserted through the through hole 12A of the connecting plate 12 so as to be screwed along the spiral helix hole 42 present at the center of the outer laminated body 16. .

  Further, not only the pair of connecting plates 12, 14 are vulcanized and bonded to the upper and lower sides of the outer laminate 16, but the elastic material 18 A is vulcanized to form the elastic material 18 A as a rubber ring 18. However, at this time, the outer laminated body 16 is produced so that the height of the outer laminated body 16 is lower than the height of the coil springs 22 and 24.

  The elastic member 26 is inserted into the coil springs 22 and 24 in a state in which the lid 32 is attached to the connecting plate 12 by screwing, and the elastic member 26 is filled in the gap on the inner peripheral side of the coil springs 22 and 24. After arranging 26, the seismic isolation device 10 is completed by screwing and attaching the lid 32 to the connecting plate 14. At this time, the coil springs 22 and 24 formed higher than the height of the outer laminated body 16 are compressed so as to have the same height as the outer laminated body 16 by the elastic force of the rubber ring 18, thereby being compressed and pre-strained. Is given to the coil springs 22 and 24.

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, twin metal is formed at the center of the outer laminate 16 in which elastic rubber rings 18 and rigid metal rings 20 are alternately laminated. Two coil springs 22 and 24, each formed in a spiral shape that can be elastically deformed with a material and having different outer diameters, are arranged coaxially with each other. As shown in FIGS. 1 and 2, the cross-sectional shapes of the wire rods 22A and 24A constituting the coil springs 22 and 24, respectively, are rectangles having a long side in the radial direction R of the coil spring 22 in the quadrangular shape. .

  However, each of the rubber rings 18 and each of the metal rings 20 is provided with through holes 38 and 40 having shapes corresponding to the shapes of the corresponding portions of the two coil springs 22 and 24, respectively. 16 has a spiral spiral hole 42 corresponding to the overall shape of the coil springs 22 and 24.

  That is, in this embodiment, as the displacement in the horizontal direction A is input to the seismic isolation device 10, not only the rubber rings 18 of the outer laminate 16 are elastically deformed, but also the cross-sectional shapes of the wires 22A and 24A. Although the rectangular metal coil springs 22 and 24 are deformed in accordance with the input of the displacement, the adjacent surfaces of the wire 22A and the wire 24A having a rectangular cross section as shown in FIG. Are in contact with each other, so that the mutual wire rods 22A and 24A are restrained.

  Furthermore, through holes 38 and 40 having shapes corresponding to the shapes of corresponding portions of the coil springs 22 and 24 are provided in the rubber rings 18 and the metal rings 20, respectively, the wire rods 22A and 24A of the coil springs 22 and 24 are provided. Is restrained by the inner peripheral surface of the through hole 40 of each metal ring 20, and the metal rings 20 can prevent the coil springs 22, 24 from falling down. In addition, the elastic member 26 disposed inside the two coil springs 22 and 24 also restrains the movement of the coil springs 22 and 24 so as to follow the deformation of the outer laminated body 16.

  As a result, even if a large horizontal displacement A is applied to the seismic isolation device 10, the coil springs 22 and 24 are not crushed. Sex can be kept stable. Therefore, according to the seismic isolation device 10 according to the present embodiment, even when an earthquake occurs, the composite between the outer laminated body 16 and the coil springs 22 and 24 that are arranged in parallel and elastically deformed in parallel with each other. As a result, it is possible to reliably reduce earthquake vibrations and prevent earthquake vibrations from being transmitted to the building.

  As described above, the seismic isolation device 10 according to the present embodiment not only arranges the metal coil springs 22 and 24 in the outer laminated body 16 but also the coil springs by the inner peripheral surface of the through hole 40 of each metal ring 20. Since the wire rods 22A and 24A of the wires 24 and 24 can be restrained and the movement of the coil springs 22 and 24 can be restrained, the vibration damping characteristics as described above can be obtained without using a lead material. Without giving any vibration, it has the same or better vibration control characteristics than conventional seismic isolation devices.

  Furthermore, in the present embodiment, since the two coil springs 22 and 24 are coaxially combined with each other and arranged in the outer laminated body 16, a small size in the hollow portion 28 in the central portion of the outer laminated body 16 is obtained. Even in a space, the coil springs 22 and 24 having a relatively large spring constant can be arranged using the space to the maximum. And since these two coil springs 22 and 24 are coaxially combined and arrange | positioned, as the wire length per one formed in the spiral shape of the coil springs 22 and 24 becomes short, each coil spring The spring constants 22 and 24 are also increased.

  On the other hand, in the present embodiment, as the wire rods 22A and 24A constituting the helical coil springs 22 and 24 that can be elastically deformed are formed of twin metal materials, the twin crystals constituting the wire rods 22A and 24A are formed. Since a pre-strain is applied to the metal material, the spring constant is lowered and the damping coefficient is increased when a tensile force or a shear force is applied, compared to a simple twin alloy. It has large damping characteristics equivalent to or better than damping alloys.

  In other words, when a stress is applied to the coil springs 22 and 24 from the outside, a pre-strain is applied and the deformation is already performed up to the point P in the region F1 where twin deformation occurs in the stress-strain curve of FIG. The coil springs 22 and 24 are deformed as indicated by an arrow E in a region F1 in which twin deformation occurs in a form that further increases twin deformation or decreases twin deformation.

  From this, by giving pre-strain to the twin coil springs 22 and 24, the spring constant is reduced, and the range surrounded by the hysteresis line F including the region F1 in the stress-strain curve of FIG. Can be made larger. As a result, effective and good vibration damping characteristics can be obtained.

Next, a second embodiment of the seismic isolation device and the manufacturing method thereof 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.
The seismic isolation device 10 of the present embodiment has the same structure as that of the first embodiment, but the procedure of the manufacturing method is different from that of the first embodiment. That is, when the seismic isolation device 10 is manufactured, two twins each having a spiral shape and different outer diameters are formed by the wire rods 22A and 24A each having a rectangular cross-sectional shape as in the first embodiment. The coil springs 22 and 24 are prepared. Similarly to the first embodiment, a plurality of metal rings 20 and a plurality of elastic materials 18A are also formed in a shape having through holes 40 and 38 that match the shape of the corresponding portions of the coil springs 22 and 24, respectively. .

  However, next, as shown in FIG. 7, the two coil springs 22 and 24 are coaxially combined with each other, and the positional relationship of the through holes 40 and 38 around the two coil springs 22 and 24. Are aligned with these coil springs 22 and 24, and a plurality of metal rings 20 and elastic materials 18A are alternately stacked to form the outer laminated body 16 having the coil springs 22 and 24 built therein.

  After forming the outer laminated body 16 having the coil springs 22 and 24 built in in this way, the connecting plates 12 and 14 and the lid member 32 are attached, and the elastic material 18A is vulcanized to form the elastic material 18A into the rubber ring 18. Further, by disposing the elastic member 26, the seismic isolation device 10 is completed.

Next, the effect | action of the seismic isolation apparatus 10 which concerns on this Embodiment, and its manufacturing method is demonstrated below.
According to the present embodiment, when a displacement in the horizontal direction A is input to the seismic isolation device 10 completed in the same manner as in the first embodiment, the outer laminated body 16 and the metal coil springs 22 and 24 are displaced. Since each metal ring 20 is provided with a through hole 40 having a shape matched to the shape of the corresponding part of the coil springs 22 and 24, the deformation is as follows.

  That is, as in the first embodiment, the wire rods 22A and 24A of the coil springs 22 and 24 are constrained by the inner peripheral surface of the through hole 40 of each metal ring 20, and the coil springs 22 and 24 are caused to fall down. Can be prevented. In addition, the same operation as that of the first embodiment can be achieved in this embodiment.

Next, a third embodiment of the seismic isolation device and the manufacturing method thereof 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, as shown in FIG. 8, the coil spring 22 formed of a wire material 22A having a rectangular cross-sectional shape made of a twinned metal material as in the first embodiment. The outer laminated body 16 is disposed at the central portion. However, in this embodiment, unlike the first embodiment, a structure without the coil spring 24 is adopted.

  Further, as shown in FIG. 9, the through holes 48 and 50 respectively provided in each rubber ring 18 and each metal ring 20 have an arc shape that matches the shape of the corresponding part of the coil spring 22. Accordingly, a spiral helix hole 52 corresponding to the overall shape of the coil spring 22 exists along the stacking direction (the arrow Y direction in FIG. 8) at the center of the outer stacked body 16. However, in the present embodiment, since the through holes 48 and 50 are formed in an arc shape, the elastic member 26 made of hard urethane is not arranged inside the coil spring 22, and instead of the inside of the coil spring 22. The through holes 48 and 50 are also positioned so as to face each other on the peripheral surface side.

Next, the effect | action of the seismic isolation apparatus 10 which concerns on this Embodiment, and its manufacturing method is demonstrated below.
According to the present embodiment, as the displacement in the horizontal direction A is input to the seismic isolation device 10, not only each rubber ring 18 of the outer laminate 16 is elastically deformed, but also the cross-sectional shape of the wire 22A is rectangular. The metal coil springs 22 are deformed according to the displacement input.

  However, the through holes 48 and 50 having shapes corresponding to the shapes of the corresponding portions of the coil springs 22 are provided in the respective rubber rings 18 and the respective metal rings 20, so that the wire 22 </ b> A of the coil springs 22 is provided on the respective metal rings 20. Restrained by the inner peripheral surface of the through hole 50, the metal ring 20 can prevent the coil spring 22 from falling down.

  As described above, according to the seismic isolation device 10 according to the present embodiment, not only the metal coil spring 22 is arranged in the outer laminated body 16 but also in the outer laminated body 16 according to the spiral shape of the coil spring 22. By forming the spiral hole 52, the coil spring 22 and the inner peripheral surface of the through hole 40 of the metal ring 20 forming the spiral hole 52 mesh with each other, and the coil spring 22 is restrained. It becomes difficult to be transmitted. For this reason, as in the first embodiment, since the vibration damping characteristics as described above can be obtained without using a lead material, it is equal to or more than the conventional seismic isolation device 10 without giving a load to the environment. It came to have the damping characteristics.

Next, a fourth embodiment of the seismic isolation device and the manufacturing method thereof 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, coil springs 22 and 24 formed of wire rods 22A and 24A made of twinned metal material and having a rectangular cross-sectional shape as in the first embodiment are shown in FIG. As shown in FIG. 4, the connecting plates 12 and 14 are arranged in the center portion of the outer laminated body 16 and are arranged in the upper and lower ends of the outer laminated body 16 and are formed in a disk shape including the lid 32. Respectively constitute the upper and lower parts of the seismic isolation device 10.

  However, in the present embodiment, unlike the first embodiment, the portion of the cover member 32 that is a portion facing the coil springs 22 and 24 of each of the connecting plates 12 and 14 that are metal support members is not provided. A spiral groove 62 having a spiral shape corresponding to the shape of the corresponding portion of the coil springs 22 and 24 is formed, and the coil springs 22 and 24 are slightly formed according to the first embodiment. The structure is long.

  Further, a constraining member 64 made of a rubber material harder than the rubber ring 18, such as hard urethane, is filled in the spiral spiral hole 42 and the spiral groove 62 provided in the outer laminate 16. Structure. That is, the JIS A hardness of the conventional rubber material such as the rubber ring 18 is about 40, whereas the JIS A hardness of the rubber material constituting the restraining member 64 is about 90. The binding force is strengthened.

Next, the procedure of the method for manufacturing the seismic isolation device 10 according to the present embodiment will be described below.
When this seismic isolation device 10 is manufactured, a procedure substantially similar to that of the first embodiment is executed. First, the spiral groove 62 is formed in the lid member 32 by machining or the like. Further, when the coil springs 22 and 24 in a combined state are inserted through the through hole 12A of the connecting plate 12 and screwed along the spiral spiral hole 42 present at the center of the outer laminated body 16, The upper and lower ends of the coil springs 22 and 24 are slightly protruded from the outer laminate 16.

  Then, the elastic material 18A is vulcanized to form the elastic material 18A as the rubber ring 18, and instead of the elastic member 26 used in the first embodiment, the rubber becomes harder than the rubber ring 18 in a solidified state. In addition to filling the material around both ends of the coil springs 22, 24, the material is also filled into the gaps between the coil springs 22, 24 in the spiral spiral hole 42.

  Thereafter, the cover members 32 are attached to the connecting plates 12 and 14 in such a manner that the coil springs 22 and 24 are screwed into the spiral grooves 62, and are respectively screwed. As a result, the seismic isolation device 10 has a structure in which the constraining member 64 formed of a hard rubber material is filled in the gap between the spiral spring 42 and the coil springs 22 and 24 in the spiral groove portion 62. Is completed.

Next, the effect | action of the seismic isolation apparatus 10 which concerns on this Embodiment, and its manufacturing method is demonstrated below.
In this embodiment, as the displacement in the horizontal direction A is input to the seismic isolation device 10, not only each rubber ring 18 of the outer laminate 16 is elastically deformed, as in the first embodiment. The metal coil springs 22 and 24 are deformed in accordance with the displacement input, and the adjacent surfaces of the wire rod 22A and the wire rod 24A come into contact with each other, so that the wire rods 22A and 24A are restrained. .

  Further, through-holes 38 and 40 are formed in each rubber ring 18 and each metal ring 20 in accordance with the shape of the corresponding part of the coil springs 22 and 24, respectively, and matched to the shape of the corresponding part of the coil springs 22 and 24. A spiral groove 62 having a spiral shape is formed in the portions of the coupling plates 12 and 14 facing the coil springs 22 and 24, respectively. It is formed slightly longer than the embodiment.

  With the above structure, the wire rods 22A and 24A of the coil springs 22 and 24 are not only restrained by the inner peripheral surface of the through-hole 40 of each metal ring 20, but the shape matched to the shape of the corresponding part of the coil springs 22 and 24. By inserting the end portions of the coil springs 22 and 24 into the spiral groove portion 62 and fixing them to the lid member 32, the end portions of the coil springs 22 and 24 are mechanically restrained by the lid member 32, and the seismic isolation device 10. The deformation of the coil springs 22 and 24 is forced to follow the displacement.

  In addition, since the restraining member 64 formed of a rubber material harder than the rubber ring 18 is filled in the spiral hole 42 and the spiral groove portion 62 of the outer laminated body 16, each of the restraining members 64 can also be used. The movements of the coil springs 22 and 24 are constrained to follow the deformation of the outer laminate 16.

  That is, not only is the gap between the coil springs 22, 24 arranged in the spiral spiral hole 42 and the spiral hole 42 filled with the restraining member 64, but the restraining member 64 is made harder than the rubber ring 18. As a result, the rattling of the coil springs 22 and 24 in the spiral hole 42 is reliably eliminated, and the deformation of the coil springs 22 and 24 can be reliably followed by the displacement of the seismic isolation device 10.

  As a result, according to the seismic isolation device 10 of the present embodiment, not only the coil springs 22 and 24 can be prevented from falling down by the metal ring 20 but also the same action as the first embodiment, the coil spring 22 , 24 can be restrained more reliably, so that even higher damping characteristics can be obtained.

  On the other hand, as another manufacturing method of the present embodiment, when the same procedure as that of the second embodiment is adopted, until the procedure of forming the outer laminated body 16 in which the coil springs 22 and 24 are incorporated, The same as in the second embodiment. However, after this, the connecting plates 12 and 14 and the lid 32 are attached, and the elastic material 18A is not only vulcanized and the elastic material 18A is used as the rubber ring 18, but the elastic member 26 is disposed in the coil springs 22 and 24. Instead, the constraining member 64 that is harder than the rubber ring 18 is filled into the gap between the coil springs 22 and 24 in the spiral helix hole 42.

  That is, in another manufacturing method of the present embodiment, in the final stage of manufacturing the seismic isolation device 10, the restraining member 64 that is harder than the rubber ring 18 is filled into the spiral spiral hole 42 of the outer laminated body 16. Thus, even with the seismic isolation device 10 manufactured by this manufacturing method, even higher damping characteristics can be obtained, including the above-described procedure in the fourth embodiment.

Next, a fifth embodiment of the seismic isolation device and the manufacturing method thereof 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, 3rd embodiment, and the overlapping description is abbreviate | omitted.
According to the seismic isolation device 10 of the present embodiment, a coil spring 22 formed of a wire material 22A having a rectangular cross-sectional shape made of a twinned metal material as in the third embodiment, as shown in FIG. The connecting plates 12 and 14 that are arranged in the center portion of the outer laminated body 16 and are formed in a disk shape including the lid member 32 are arranged in the upper and lower ends of the outer laminated body 16. 10 upper and lower parts are respectively configured.

  However, in the present embodiment, unlike the third embodiment, the coil spring 22 corresponds to the portion of the cover member 32 that faces the coil spring 22 of each of the coupling plates 12 and 14 that are support members. A spiral groove 62 having a spiral shape corresponding to the shape of the portion to be formed is formed, and the coil spring 22 is formed to be slightly longer than the third embodiment in accordance with this. .

  Further, the inside of the spiral spiral hole 52 and the spiral groove portion 62 provided in the outer laminated body 16 is filled with a restraining member 64 formed of a harder rubber material than the rubber ring 18. Yes. As described above, the seismic isolation device 10 according to the present embodiment has a structure having the spiral groove 62 and the restraining member 64 that are substantially the same as those of the fourth embodiment, but the difference is that there is only one coil spring. Have.

  Therefore, the seismic isolation device 10 of the present embodiment also has the spiral groove 62 and the restraining member 64 described in the fourth embodiment in the same structure as the basic structure of the third embodiment. Because of the structure, the same effects as those of the third and fourth embodiments are exhibited.

  Next, the change in the value of tan δ, which is a loss coefficient with respect to horizontal displacement, by the seismic isolation device and the manufacturing method thereof according to each embodiment is shown in the graph of FIG. 12, and will be described below based on this graph. In this graph, 100% of the horizontal displacement means that the horizontal displacement is the same as the dimension of the seismic isolation device in the height direction (arrow Y direction in FIG. 1).

  Here, first, the characteristic curve A shown in FIG. 12A represents the characteristic of the seismic isolation device 10 having the structure of FIG. 10 according to the fourth embodiment, and the characteristic curve B is the same as that of the first embodiment. The characteristic of the seismic isolation apparatus 10 of the structure of FIG. That is, both the seismic isolation devices 10 have a structure with two coil springs.

  Moreover, the characteristic curve C shown in FIG. 12 (B) represents the characteristic of the seismic isolation device 10 having the structure of FIG. 11 according to the fifth embodiment, and the characteristic curve D is also related to the third embodiment. The characteristic of the seismic isolation apparatus 10 of the structure of FIG. 8 is represented. That is, both the seismic isolation devices 10 have a single coil spring structure.

  From the graph shown in FIG. 12A, it can be seen that the characteristic curve A has a larger change in the value of tan δ than the characteristic curve B and causes a large attenuation. Further, from the graph shown in FIG. It can be seen that the curve C has a larger change in the value of tan δ than the characteristic curve D, and generates a large attenuation. Therefore, the effect by the helical groove part of a support member and a restraining member was confirmed from these graphs.

  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 twinned metal material for forming the wire rods 22A and 24A constituting the coil springs 22 and 24, so that it is equivalent to the conventional one without giving a load to the environment. A coil spring having the above damping 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 deformation mechanism of the wire rods 22A and 24A constituting the coil springs 22 and 24 by using twin crystals will be described below.
By applying stress from the lateral direction to the martensite phase in which metal atoms shown in FIG. 13A are uniformly arranged, deformation starts as shown in FIG. Furthermore, when stress continues to be applied, the shape is deformed as shown in FIG. In the state shown in FIG. 13C, the deformation amount of the dimension S is generated.

  On the other hand, in the general metal shown in FIG. 14A, the atoms are uniformly aligned, but when stress is applied from the lateral direction, the atoms are not aligned as shown in FIG. 14B. 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. 14B is reached, the state shown in FIG. 14A 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 reverse is applied, the state returns to 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.

  Next, the result of having performed the prediction test which displaces the seismic isolation apparatus 10 of the said embodiment to a horizontal direction is demonstrated below. Here, the structure of the first embodiment in which two coil springs 22 and 24 having different outer diameters are incorporated, and the structure of the third embodiment in which one coil spring 22 is incorporated, respectively. It was set as the seismic isolation apparatus 10 for prediction tests.

  First, regarding the structure of the first embodiment, three types of samples from the first example to the third example were assumed. That is, in each sample, the height H of the coil springs 22 and 24 is 65 mm, the outer diameter D1 of the coil spring 22 is 63 mm, the outer diameter D1 of the coil spring 24 is 44 mm, the plate width dimension D of the wire 24A is 12 mm, The plate thickness dimension T of 22A and 24A was 4 mm. However, in the first embodiment, the plate width D of the wire 22A is 16 mm, in the second embodiment the plate width D of the wire 22A is 18 mm, and in the third embodiment, the plate width D of the wire 22A is 20 mm. .

  On the other hand, regarding the structure of the third embodiment, one type of sample assumed as the fourth example is assumed. That is, the height H of the coil spring 22 was 65 mm, the outer diameter D1 of the coil spring 22 was 63 mm, the plate width dimension D of the wire 22A was 20 mm, and the plate thickness dimension T of the wire 22A was 4 mm.

  In addition, as a result of predicting the change in tan δ by horizontally displacing the seismic isolation device 10 as the sample by displacement amounts of 100% and 250%, respectively, in the first embodiment, 0.5% at 100% and 0 at 250%. .450, 100% in the second embodiment is 0.618, 250% is 0.503, 100% in the third embodiment is 0.673, 250% is 0.557, and the fourth embodiment. In the example, it was 0.578 at 100% and 0.445 at 250%. At this time, the horizontal displacement of the same amount as the height dimension of the coil spring was defined as a displacement amount of 100%.

  And from this prediction test result, the value of tan δ targeted for the loss characteristic satisfies 0.55 at the time of 100% displacement of each example, and each example not only has a high tan δ value, It was confirmed that there was little change in the value of tan δ between 100% and 250% displacement. That is, since the value of tan δ is high and the change is small as described above, each embodiment can be said to be a highly durable seismic isolation device 10. Further, in the structure of the first embodiment, the effect of doubling the coil spring could be confirmed because the three types of samples satisfied the target of the loss characteristics.

  In the above embodiments, the number of coil springs is one or two. However, three or more coil springs may be used. Furthermore, in the above embodiment, a twinned metal material is used as the material of the wire constituting the coil spring, but other general metal materials may be used as the spring material.

  In each of the above embodiments, since a plurality of coil springs are coaxially combined with each other and arranged in the outer laminated body 16, a plurality of coil springs having a relatively large spring constant are utilized by making maximum use of space. As a result of being able to arrange, more coil springs can be arranged in the same volume space. Furthermore, by changing the number of coil springs to be superimposed, the apparent spring constant of the form in which the spring constants of the coil springs are added can be easily adjusted according to the required damping force.

  On the other hand, in each of the above embodiments, the cross-sectional shape of the wire constituting the coil spring is a rectangle having the long side in the radial direction of the coil spring in the quadrangular shape. However, if the effect of the present invention is satisfied, the radial direction of the coil spring May be a rectangle having a short side, and the cross-sectional shape of the wire may be a square. Furthermore, since the cross-sectional shape of the wire constituting the coil spring is a quadrangle, the cross-sectional area of the innermost diameter portion where the amount of distortion of the coil spring is considered to be the largest is increased from that of the circular cross section, thereby improving the strength of the coil spring. .

  Moreover, in the seismic isolation device according to each of the above embodiments, the coil spring is pressed from above and below by the lid material. Instead, the upper and lower ends of the coil spring are fixed to the lid material by using a fixing tool such as a screw. As such a structure, you may employ | adopt the structure which makes a coil spring follow the displacement of a seismic isolation apparatus more reliably. Furthermore, in the seismic isolation device according to the above-described embodiment, the elastic member in the coil spring is made of hard urethane. However, the elastic member may be made of another material such as a rubber material.

It is sectional drawing of the seismic isolation apparatus which concerns on the 1st Embodiment of this invention. It is a principal part enlarged view which expands and shows the principal part of the coil spring of the seismic isolation apparatus which concerns on the 1st Embodiment of this invention. It is a principal part enlarged view which expands and shows the principal part of a coil spring in the state which the displacement added to the seismic isolation apparatus which concerns on the 1st Embodiment of this invention. It is a top view of the member applied to the seismic isolation apparatus which concerns on the 1st Embodiment of this invention, Comprising: (A) is a top view of a metal ring, (B) is a top view of a rubber ring. It is a perspective view explaining the assembly of the seismic isolation apparatus which concerns on the 1st Embodiment of this invention. It is a figure of the graph showing the stress distortion curve of the coil spring which concerns on the 1st Embodiment of this invention. It is a perspective view explaining the assembly of the seismic isolation apparatus which concerns on the 2nd Embodiment of this invention. It is sectional drawing of the seismic isolation apparatus which concerns on the 3rd Embodiment of this invention. It is a top view of the member applied to the seismic isolation apparatus which concerns on the 3rd Embodiment of this invention, Comprising: (A) is a top view of a metal ring, (B) is a top view of a rubber ring. It is sectional drawing of the seismic isolation apparatus which concerns on the 4th Embodiment of this invention. It is sectional drawing of the seismic isolation apparatus which concerns on the 5th Embodiment of this invention. It is a figure which shows the graph showing the change of the value of tan-delta with respect to the horizontal displacement of a seismic isolation apparatus, Comprising: (A) shows the characteristic of the seismic isolation apparatus of 4th Embodiment, and the seismic isolation apparatus of 1st Embodiment. It is a figure showing, (B) is a figure showing the characteristic of the seismic isolation apparatus of 5th Embodiment, and the seismic isolation apparatus of 3rd Embodiment. It is explanatory drawing showing the atomic arrangement | sequence of the coil spring which concerns on embodiment of this invention, Comprising: (A) is a figure showing a martensitic phase, (B) is a figure showing the state which a deformation | transformation started in the martensitic phase. (C) is a diagram showing a state in which the deformation of the martensite phase is 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 12 Connecting plate (supporting member)
14 Connecting plate (supporting member)
16 Outer laminate 18 Rubber ring (outer elastic plate)
18A Elastic material 20 Metal ring (outer hard plate)
22 Coil spring 22A Wire material 24 Coil spring 24A Wire material 32 Cover material (support member)
40 through hole 42 spiral hole (spiral hole)
50 through hole 52 spiral hole (spiral hole)
62 Spiral groove (groove)
64 Restraint member

Claims (14)

An outer laminated body in which an outer elastic plate having elasticity and an outer hard plate having rigidity are alternately laminated;
A metal coil spring disposed in the outer laminate;
A seismic isolation device having
Each outer elastic plate and each outer hard plate are each provided with a through hole having a shape corresponding to the shape of the corresponding portion of the coil spring, and a spiral hole portion corresponding to the entire shape of the coil spring exists in the outer laminate. A seismic isolation device characterized by that.   2. The seismic isolation device according to claim 1, wherein the coil spring is a plurality of coil springs each having a rectangular cross-sectional shape and having different outer diameters.   The seismic isolation device according to claim 2, wherein a plurality of coil springs are coaxially combined and arranged in the outer laminated body.   The seismic isolation device according to claim 2, wherein the cross-sectional shape of the wire constituting each coil spring is a rectangle having a long side in the radial direction of the coil spring.   2. The seismic isolation device according to claim 1, wherein the wire constituting the coil spring 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 6. The exemption according to claim 5, 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.   2. The seismic isolation device according to claim 1, wherein a support member is disposed at an end of the outer laminated body, and a groove portion having a shape corresponding to a shape of a corresponding portion of the coil spring is formed in the support member.   2. The seismic isolation device according to claim 1, wherein a constraining member harder than the outer elastic plate is filled in a spiral hole provided in the outer laminated body. A plurality of rigid outer rigid plates are produced while providing through holes in a shape that matches the shape of the corresponding part of the coil spring,
Next, a plurality of outer hard plates and elastic materials that can become outer elastic plates are alternately arranged so that the through holes of the outer hard plate are arranged in the form of spiral holes that are in the form of coil springs. Laminate to form an outer laminate,
After that, the manufacturing method of the seismic isolation device, wherein the coil spring is inserted into the outer laminated body along the spiral hole.   10. The seismic isolation device according to claim 9, wherein the elastic material is vulcanized after the coil spring is inserted along the spiral hole of the outer laminate, and the elastic material is used as an outer elastic plate. Production method.   After inserting the coil spring along the spiral hole of the outer laminate, the elastic material is vulcanized to make this elastic material the outer elastic plate and the restraining member harder than the outer elastic plate is helical. The method for manufacturing the seismic isolation device according to claim 9, wherein a gap between the hole and the coil spring is filled. A plurality of rigid outer rigid plates are produced while providing through holes in a shape that matches the shape of the corresponding part of the coil spring,
Next, a plurality of outer hard plates and elastic materials that can become outer elastic plates are alternately laminated around the coil spring to form an outer laminated body with a built-in coil spring. Device manufacturing method.   13. The method for manufacturing a seismic isolation device according to claim 12, wherein after forming an outer laminated body having a built-in coil spring, an elastic material is vulcanized and the elastic material is used as an outer elastic plate. After forming the outer laminated body having a built-in coil spring, the elastic material is vulcanized to make the elastic material an outer elastic plate, and a restraining member harder than the outer elastic plate is connected to the coil spring in the outer laminated body. The method for manufacturing a seismic isolation device according to claim 12, wherein a gap is filled between the seismic isolation devices.

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