JPH03343A - Vibration excluding device - Google Patents

Abstract

PURPOSE:To impart high vibration excluding effect in both horizontal and vertical directions to a subject to exclude vibration by connecting a regulating cylinder body to the inner surface of either a base plate or an upper plate in such a manner as to be capable of sliding, and protruding an elastic column on the inner surface of the other in such a manner that the regulating minor diameter part on its top end is inserted into the cylinder body. CONSTITUTION:In the case of a comparatively small earthquake having horizontal vibration as the main component, the lower surface of an upper plate 9 and the upper surface of the plastic plate 6 of an elastic table 4 are relatively freely slid according to the oscillation transmitted to a floor bed 14, and the regulating minor diameter part 12 of an elastic column 11 is also relatively freely moved in the inside of a regulating cylinder body 7 and hardly regulated thereby. Thus, almost perfect vibration excluding effect can be obtained in the oscillation of this degree. When the oscillation is increased, and the minor diameter part 12 is made into contact with the inner circumference of the cylinder body 7 by the movement, the cylinder body 7 is also radially slid on the circular plane part 2 of the base plate 1 together with the minor diameter part 12 against coil springs 8.... Thus, when the oscillation exceeds the diameter of the cylinder body 7, the cylinder can be slid up to its movable range while being regulated by the springs 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an insulation system that supports foundations of various buildings, floors within buildings, and various devices or articles while protecting them from earthquakes and other vibrations. It concerns a seismic device.

[Conventional technology] Conventional seismic isolation devices basically support the floor by
It has been proposed that legs are formed at the bottom of a plate and rubber is attached to the lower ends of these legs.

Furthermore, as a seismic isolation device for a building or the like, there is one in which an elastic material made of laminated rubber is placed between the foundation and the structure.

No seismic isolation device is proposed to support the foundation itself.

[Problems to be solved by the invention] The former is integrated with the floor and cannot be freely used for seismic isolation of various objects. Furthermore, mechanically, it cannot be said that the seismic isolation effect is sufficient in both the horizontal and vertical directions.

Similarly, the latter cannot be freely applied to various objects, and the seismic isolation effect is not sufficient.

The present invention can easily support various seismically isolated objects such as the floor of a building, the foundation of the building itself, or other various articles or devices, while supporting it in horizontal and vertical directions. The purpose of the present invention is to provide a device that can provide a high degree of seismic isolation to any of the following.

[Means for Solving the Problems] The gist of the configuration of the present invention is that a base plate and an upper plate are arranged facing each other, and a regulating cylindrical body is provided on the inner surface of one of the base plate or the upper plate. They are slidably joined at one end, and an elastic column is provided on the inner surface of the other side so as to protrude so that the small-diameter regulating portion at the tip is inserted inside the regulating cylindrical body, and the outer circumference of the regulating cylindrical body and the larger diameter A spring member is disposed between a member located on a concentric circle of the diameter and holds the regulating cylinder in position while allowing the regulating cylinder to slide in the radial direction, and the regulating cylinder is slidably joined. This is a seismic isolation device in which an elastic table is provided protruding from the inner surface of the base plate or the upper plate, and the table surface of the elastic table is slidably joined to the inner surface of the base plate or the upper plate to which the regulating cylinder is not connected.

The upper plate is a means for connecting the seismic isolation device to the seismically isolated object, such as by joining the seismically isolated object to it. The seismic isolation targets include foundations of various buildings, floors within buildings, and various devices or articles. Furthermore, the devices or articles include computers and the like.

The base plate is a plate-like member that is fixed to a basic part for supporting the seismically isolated object. For example, when supporting a floor, it is placed on the subfloor, when supporting equipment such as a computer it is placed on the floor, and when supporting the foundation of a building, it is placed on the ground below it. These are plate-like members each disposed on a structure that serves as a base that supports the above-mentioned foundation. In any case, the above-mentioned base plate is a structure that serves as the base of a seismic isolation device that supports the seismically isolated object.

As mentioned above, the regulating cylinder is slidably disposed on the inner surface of the base plate or the upper plate, and even if it is composed of - cylinders, it can be constructed in multiple layers by a plurality of cylinders with different diameters. It may be configured as follows.

The regulating cylindrical body has a flange portion slidably connected to the inner surface of one of the base plate or the upper plate at one end thereof, and a shoulder portion located around the regulating small diameter portion of the elastic column at the other end. It is preferable to configure a flange part that can be slidably joined to the part.

In addition, the inner diameter of the above-mentioned regulating cylinder is determined, as a first step, by determining the range of relative horizontal radial rocking movement of the elastic column due to vibrations such as earthquakes (relative horizontal radial rocking movement between the base plate and the upper plate). It is best to use an appropriate diameter to control the movement range. Normally, it is appropriate to set this diameter to the extent of the horizontal amplitude caused by earthquakes that occur relatively frequently. Of course, it is not limited to this. When a plurality of regulating cylindrical bodies are configured, the diameter of the innermost cylindrical body can be configured to be quite small.

Incidentally, to explain the case where the elastic column moves further relative to this point, as a result, the regulating small diameter portion of the elastic column engages with the inner circumference of the regulating cylinder, and the regulating cylinder also resists the spring member together with the regulating small diameter portion. It will now move by sliding.

Furthermore, as will be explained in detail later, a case where the regulating cylinder is configured to have a multilayer structure will be explained. In addition to the above, the above-mentioned actions are performed inside the regulating cylinder. That is,
The elastic column freely slides inside the innermost cylindrical body, and the radial movement beyond this causes the regulating small diameter portion to engage the edge of the innermost cylindrical body, and the elastic column moves along with the outermost cylindrical body. It swings and moves under the control of the intervening spring member, and when the innermost cylindrical body comes into contact with the outer cylindrical body due to a larger sliding movement in the radial direction, a similar movement occurs in that cylindrical body. It means that it will become. If a similar movement occurs in the outermost cylindrical body in this way, this will be the movement of the regulating cylindrical body described above.

By the way, the positional relationship between the regulating cylindrical body and the elastic table is such that the outer periphery of the regulating cylindrical body easily comes into contact with the elastic table during horizontal radial rocking in the expected largest earthquake. The decision should be made with sufficient margin to ensure that no problems occur.

Furthermore, when the regulating cylinder is configured to have a multilayered structure made up of a plurality of cylinders as described above, the inner and outer cylinders each slide their nearest inner cylinder in the radial direction inside the outer cylinder. It is configured to be positioned and held by an intervening spring member disposed therebetween so that it can be moved freely. Therefore, the intervening spring member used is the one on the inner side, which has less elasticity.

The elastic column is configured to have a cylindrical shape mainly made of synthetic rubber, for example. The regulation small diameter part is made of metal, for example, and has a circular collar at its base, which is bonded and fixed to the tip of the elastic column, so that the regulation small diameter part is arranged at the tip of the elastic column. is appropriate.

It is appropriate that a large number of spring members for slidably holding the regulating cylindrical body are arranged in the radial direction at as small an angular interval as possible. The type of spring does not matter.

Further, the elastic table stands up from the inner surface of the base plate or the upper plate, and an elastic material mainly made of synthetic rubber is arranged on the upper part,
The table surface is configured to be a smooth surface. If necessary, place a sliding plate on the table. This elastic table is configured, for example, outside a concentric space with the regulating cylinder.

By the way, the synthetic rubber constituting a part of the elastic table and the elastic column is not limited to a specific material, but each should have appropriate elasticity, taking into consideration the area of its cross section, etc. It is appropriate to prepare various types of elasticity in appropriate stages and use them depending on the weight of the seismically isolated object they support.

In addition, it is preferable to prepare an elastic connecting member with very good elasticity for connecting the upper plate and the base plate as necessary, so that the upper plate and the base plate can be connected appropriately.

[Function] Since the present invention is configured as described above, a plurality of them can be used to support the internal floors of various buildings,
Or, it is used to support the foundation of a building itself to attenuate earthquakes and other shaking, or to support various devices or articles to attenuate earthquakes and other shaking, and to protect the base-isolated object. be able to.

When this seismic isolation device supports the above-mentioned various seismic isolation objects, the upper plate is attached to the seismic isolation object and the base plate is installed on the support base. When supporting the floor, the upper plate may also serve as a part of the floor plate.

As mentioned above, the target for seismic isolation is to install this seismic isolation device in a predetermined position and place it on top of it, or to fix it on the top plate.
Alternatively, it is sufficient to set the upper plate as a part of the upper plate.

When set in this way, when vibrations are transmitted to the support base such as the flooring due to an earthquake, it is possible to perform a seismic isolation effect very efficiently.

For example, in the case of a relatively small earthquake where horizontal shaking is the main shaking component, the inner surface of the top or base plate and the surface of the elastic table may move relative to each other depending on the shaking transmitted to the base plate. The small-diameter regulating portion at the end of the elastic column can also move relatively freely inside the regulating cylindrical body, so it is possible to obtain an almost perfect seismic isolation effect. can.

In addition, when the rocking becomes large and the small diameter regulating portion of the elastic column comes into contact with the inner circumference of the regulating cylindrical body due to its movement, the regulating cylindrical body also engages the spring member that holds it in position. Against this background, it is possible to relatively slide in the radial direction together with the regulating small diameter portion, thereby obtaining a seismic isolation effect.

In this way, when the swing is small, the relative sliding movement between the elastic table and the top plate or the base plate is almost unrestricted, and when the swing is large, in addition to the similar sliding movement, the small diameter part of the elastic column is engaged. An effective seismic isolation effect can be achieved by the sliding movement of the fitted regulating cylinder against the spring member.

Furthermore, with respect to vibrations in the vertical direction, seismic isolation can be ensured due to the elasticity of the elastic table.

[Example] An embodiment of the present invention will be described below based on the drawings.

This is an example of supporting a floorboard, and is of a type built into a floor member.

As shown in FIGS. 1 and 2, a circular plane part 2 is provided at the center of a base plate l having a square plane, and the circular plane parts 2 are provided at the four corners.
Elastic table 4 leaving a storm circular plane part 3.3... with the same diameter as
Launch and configure. The elastic table 4 is made of an elastic material 5 from the middle in the height direction to just below the upper end, and a plastic plate 6 having a smooth upper surface is attached to the upper end. The elastic material used is chloroprene-based synthetic rubber, and its elasticity and rigidity are determined to be appropriate for supporting the floorboard in this example.

On the central circular plane portion 2 of the base plate 1, a regulating cylindrical body 7 is placed upright and slidably. As shown in FIG. 1, the regulating cylindrical body 7 has flanges 7a and 7b projecting outward at its upper and lower ends, respectively, and has smooth upper and lower surfaces. Further, on the outer periphery of the regulating cylindrical body 7, as shown in FIG. . . , so that the regulating cylindrical body 7 is held at the center of the circular plane portion 2 unless an external force is applied.

On the other hand, the base plate 1 is faced with a square upper plate 9 having the same dimensions in plane. In this example, this upper plate 9 is used as a substrate for a floor plate, and a decorative material 10 is placed on the upper surface of the upper plate 9.
Attach.

Further, as shown in FIG. 1, an elastic column 11 is fixedly suspended from the center of the lower surface of the upper plate 9, and a regulating small diameter portion 12 is further suspended from the lower end thereof. The regulating small diameter portion 12 is formed of metal in the shape of a rod-shaped body hanging from the center of a circular collar, and is connected to the lower surface of the elastic column 11.

The lower surface of the upper plate 9 is configured to be a smooth surface and is slidably joined to the upper surface of the plastic plate 6 at the upper end of the elastic base 4, and the lower end shoulder portion of the elastic column 11, that is, the lower surface of the circular collar is , when moving in the radial direction, the regulating cylindrical body 7
It is slidably joined onto the flange 7a at the upper end of the holder.

Incidentally, the main body portion of the elastic column 11 is molded from chloroprene-based synthetic rubber, similarly to the elastic table 4.

In addition, each corner of the circular plane part 3.3... and the upper plate 9
The corner portions are connected to each other by coil springs 13. These coil springs 13.13-... have very weak elasticity,
Also, use one that has very good elasticity.

Since this embodiment is constructed as described above, it can be used in various buildings as a floor capable of attenuating earthquakes and other shaking.

However, in the case of the lever example, since the structure is such that the seismic isolation device is incorporated into the floor member, the floor subfloor 14 is configured in the area where installation is required,
What is necessary is just to arrange the required number of floor members on it.

Note that the above-mentioned floor member leaves a portion not to be installed at the outer edge of the installation area, that is, a width slightly square from the peripheral wall of one room, and a cushion member is inserted and arranged at this position.

Therefore, in the above region, a floor can be constructed extremely simply using a floor member incorporating the above seismic isolation device.

Furthermore, as described above, these floor members have a built-in seismic isolation device, so that when vibrations are transmitted to the subfloor 14 due to an earthquake or the like, the seismic isolation function can be performed very efficiently.

In other words, in the case of a relatively small earthquake in which horizontal shaking is the main shaking component, the lower surface of the upper plate 9 and the plastic plate 6 of the elastic table 4 will change depending on the shaking transmitted to the subfloor 14. The upper surface slides freely relative to the upper surface, and the restricting small diameter portion 12 of the elastic column 11 also moves relatively freely inside the restricting cylinder 7 and is hardly restricted. Therefore, in the case of this degree of shaking, almost complete seismic isolation effect can be obtained.

In addition, the rocking becomes large, and the regulating small diameter portion 1 of the elastic column 11
2 comes into contact with the inner periphery of the regulating cylindrical body 7 due to its movement, the regulating cylindrical body 7 also resists the coil springs 8, 8, and moves together with the regulating small diameter portion 12 to the base plate. This results in a sliding movement in the radial direction on the circular plane portion 2 of l. Therefore, when a swing exceeding the diameter of the regulating cylindrical body 7 occurs, the regulating cylindrical body 7 must slide to the movable range while being slightly restricted by the coil springs 8, 8... I can do it.

In this way, when the swing is small, there is almost no restriction on the elastic table 4.
Due to the sliding movement of the plastic plate 6 and the upper plate 9,
If it is large, the regulating cylinder 7 moves together with the regulating small diameter portion 12 while being slightly restricted by the coil springs 8, 8, . It can be done.

Furthermore, even if the members of the elastic columns 11 and above are displaced from their original positions due to shaking due to earthquakes, etc., the regulating cylinder 7 returns to the center position by the coil springs 8, 8, . . . I will definitely go back.

Furthermore, with respect to vibrations in the vertical direction, the elasticity of the elastic material 5 of the elastic table 4 ensures a seismic isolation effect.

Further, the coil springs 13, 13, . . . have the function of preventing the base plate 4 and the upper plate 9 from being separated.

Next, another example of the regulating cylindrical body 27 will be briefly described based on FIG.

The above rule 111 cylindrical body 27, two cylindrical bodies 2 with different diameters
7a% 27b, and the inner and outer cylindrical bodies 27a and 27b are held in position by intervening spring members 28, 28 disposed between them so that their central axes coincide with each other. It is a combination. The intervening spring members 28, 28-- are arranged at regular angular intervals of 45° in each radial direction.

Note that the upper and lower ends of each cylindrical body 27a, 27b are provided with a collar portion 29a,
29b.

This regulating cylindrical body 27 is used in the same manner as the previously described regulating cylindrical body 7, and is slidably disposed on the upper surface of the circular plane part of the base plate 21, and is placed between the rising part of the elastic table and the regulating cylindrical body 7. 27 and the outer cylindrical body 27b, coil springs 38, 38, . These coil springs 38, 38, . . . are also arranged at equal angular intervals.

Furthermore, the regulating small diameter portion 32 of the strong column 31 hanging from the center of the lower surface of the upper plate 30 is connected to the inner cylindrical body 27a of the regulating cylinder 27.
Insert it inside. At this time, the shoulder portion 33 of the elastic column 31 is connected to the flange portion 2 at the upper end of the cylinder body 27a inside the regulating cylinder body 27.
9a so that it can slide freely.

Note that the intervening spring members 28, 28, . . . use ones having weaker elasticity than the coil springs 38, 38, .

However, if a horizontal vibration is transmitted to the base plate 21 full, and if the vibration is small, the elastic column 3
1, that is, the rocking of the regulating small diameter portion 32, remains inside the inner cylindrical body 27a, and the upper surface of the elastic table (not shown) and the lower surface of the upper plate 30 can freely slide. This ensures complete seismic isolation.

When the relative rocking of the restriction small diameter portion 32 is transmitted to the base plate 21 so as to exceed the inside of the inner cylindrical body 27a, the restriction small diameter portion 32 is attached to the edge of the cylinder 27a. are engaged and swing together with the cylindrical body 27a while being regulated by the intervening spring members 28, 28, . . . When it comes into contact with the body 27b, a similar movement will occur in the cylindrical body 27b.

The movement of the outer cylindrical body 27b is the same as the movement of the regulating cylindrical body 7 described above, so the explanation thereof will be omitted.

In this way, the small swing in the first stage is almost completely unregulated, and the slightly larger swing in the second stage is slightly regulated by the elasticity of the intervening spring member 28, 28 in the regulating cylinder 27, and furthermore. The third stage of large swing is caused by the outer coil spring 3.
8.38 - It is possible to obtain a seismic isolation effect while being regulated by...

In this example, the diameter of the inner cylindrical body 27a can be made small, so that after the vibrations have subsided, the regulation small diameter portion 32 is easily returned to the center of the − layer. hard.

[Effects of the Invention] According to the present invention, it is possible to easily support the floor or foundation of a building, and when an earthquake or other vibration occurs, vibration or rocking is not caused to the members located above this. , it is possible to provide a seismic isolation effect that significantly blocks the earthquake. In particular, a seismic isolation effect due to vertical mutual sliding movement, a spring member that elastically restricts the movement of the regulating cylinder, and an intervention that elastically restricts the movement of each internal cylinder when the regulating cylinder has a multi-layered structure. By combining the seismic isolation effect of the spring member, a seismic isolation device with an extremely high damping rate is obtained.

Furthermore, the return of the upper plate side to its original position after the end of vibration is improved.

It also ensured a seismic isolation effect against vibrations in the vertical direction.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and Fig. 1 is a schematic cross-sectional view of the seismic isolation device installed in a floor member, and Fig. 2 is a cross-sectional view of the seismic isolation device in the state shown in Fig. 1 and the structure connected to the upper plate. FIG. 3 is a schematic plan view with the elements removed, and FIG. 3 is a partial cross-sectional view showing another example of the regulating cylindrical body. 1.21...Base plate, 2...-Circular plane part, 3...
・% circular plane part, 4...elastic base, 5...-elastic material, 6
...Plastic plate, 7.27...Regulation cylindrical body, 7
a,, 7b, 29a, 29b... collar part, 8.38...
・Coil spring, 9.30... Top plate, 10... - Decorative material, 11.31... Elastic column, 12.32 - Regulation small diameter part, 13... Coil spring, 14... Floor base , 27a
, 27b... Cylindrical body, 28... Interposed spring member, 33
...shoulder area. Figure 1 Figure 3

Claims (1)

[Claims] 1. A base plate and an upper plate are arranged facing each other, and a regulating cylindrical body is slidably joined at one end to the inner surface of one of the base plate or the upper plate, and to the inner surface of the other. , an elastic column is provided protrudingly so that the regulating small diameter portion at the tip is inserted into the inner side of the regulating cylinder, and further between the outer periphery of the regulating cylinder and a member located on a concentric circle having a larger diameter. , a spring member is arranged to maintain the position of the regulating cylindrical body while allowing it to slide in the radial direction, and an elastic platform is provided protruding from the inner surface of the base plate or the top plate to which the regulating cylindrical body is slidably joined. and a seismic isolation device in which a table surface of the elastic table is slidably joined to an inner surface of a base plate or an upper plate to which the regulating cylinder is not connected. 2. The above-mentioned regulating cylindrical body is constructed into a multilayered structure consisting of a plurality of concentric cylinders having different diameters when viewed from a plane, and each inner cylindrical body is placed inside the nearest outer cylindrical body in its radial direction. 2. The seismic isolation device according to claim 1, wherein the seismic isolation device is positioned and held by an intervening spring member disposed between each of the inner and outer cylindrical bodies while allowing sliding movement of the cylindrical body. 3. The seismic isolation device according to claim 1, wherein flanges are formed at the upper and lower ends of the regulating cylindrical body. 4. The seismic isolation device according to claim 1, wherein a slide plate is bonded and fixed to the table surface that is bonded to the inner surface of the base plate or the upper plate of the elastic table.