Seismic isolation device to be used for single-family houses

Abstract

To provide a seismic isolation device for single-family houses that is appropriately priced and can be installed by an individual contractor.SOLUTION: A seismic isolation device for single-family house comprises a cylindrical cradle 2, a supporting sphere 3, and a cylindrical vessel 4, and the cradle 2 consists of a disk 23 made of iron or the like, a body 21 made of cylindrical elastic body sandwiched between the upper and lower disks, and a support 22 for supporting the foundation of a building on the upper part of the body. The upper end of the support 22 extends so that the foundation of the building can be placed on it, and the lower end of the support penetrates the body 21 and is welded by the lower disk 23. The supporting sphere 3 is installed in the cylindrical vessel 4, and the cradle 2 is installed on top of it. This structure isolates the foundation of the building by placing it on top of the cradle 2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] This relates to a seismic isolation device for use in detached houses. [Background technology]

[0002] Earthquakes are occurring frequently, and there is a demand for a seismic isolation method that can be installed at an affordable price for single-family homes. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-73146 Summary of the Invention [Problem to be solved by the invention]

[0004] The construction costs of conventional seismic isolation devices and methods are high, and there are no methods that can be installed at reasonable prices for single-family homes. There are also no methods that can be installed by individual businesses. [Means for solving the problem]

[0005] The device is provided with a cylindrical base 2 and a flange 3. The base 2 is provided with a base body 21 formed of a cylindrical container with a bottom, an upper disk 231, a lower disk 232, an elastic disk 233 sandwiched between the upper disk 231 and the lower disk 232 and having a diameter larger than that of the upper disk 231 and the lower disk 232, and a support ball 24. The support 22 extends upward from the center of the upper disc 231. The support ball 24 is disposed under the lower disc 232. The bottom surface 253 of the cylindrical container 25 is cone-shaped with the center being the lowest, and the support ball 24 is configured to be stably positioned in the center of the cone when there is no earthquake. The flange 3 is fixed to the upper part of the cylindrical container 25, and has a number of holes 361 at the upper part, into which small steel balls 362 are inserted. This seismic isolation device for a detached house is characterized in that the support 22 is passed through a hole 41 provided in the center of a tray 3 that receives the foundation of the building, and the tray with the foundation of the building is placed on the steel ball 362 of the flange, so that when an earthquake occurs, the tray of the foundation slides on the steel ball 362 to reduce shaking. Effect of the Invention

[0006] By introducing seismic isolation devices for detached houses, construction can be completed in a short amount of time, making it possible to reduce shaking during earthquakes in detached homes. [Brief description of the drawings]

[0007] [Figure 1] Configuration of the seismic isolation device of the present invention [Diagram 2] Usage diagram of the seismic isolation device of the present invention [Diagram 3] Installation photo of the seismic isolation device of the present invention [Figure 4] Photo of the seismic isolation device of the present invention [Diagram 5] The seismic isolation device of the present invention with a tray placed on it DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] FIG. 1 shows the configuration of a seismic isolation device for a detached house according to the present invention. The vibration isolation device of the present invention comprises a cylindrical base 2 and a flange 3. The base 2 includes a base body 21 formed of a cylindrical container 25 with a bottom, an upper disk 231, a lower disk 232, an elastic disk 233 on a disk sandwiched between the upper disk 231 and the lower disk 232, and a support ball 24. The support 22 extends upward from the center of the upper disc 231. The support ball 24 is disposed under the lower disc 232. The bottom surface 253 of the cylindrical container 25 is cone-shaped with the center being the lowest, and the support ball 24 is configured to be stably positioned in the center of the cone when there is no earthquake. The flange 3 is fixed to the upper part of the cylindrical container 25, and has a number of holes 361 at the upper part, into which small steel balls 362 are inserted. The support rod is passed through a hole 41 provided in the center of a tray 4 that receives the foundation of the building, and the tray with the foundation of the building is placed on the steel ball 362 of the flange, so that when an earthquake occurs, the tray of the foundation slides on the steel ball 362 to reduce shaking. This is a seismic isolation device for a detached house.

[0009] The bottom surface 253 of the cylindrical container 25 is cone-shaped with the center being the lowest, and the support ball 24 is stably positioned in the center of the cone when there is no earthquake. The elastic body is cylindrical (shown by the dotted line in Figure 1) and has a larger diameter than the upper and lower disks. It is configured to bend when it hits the side of the cylinder during an earthquake. When an earthquake occurs, since the base 2 is an elastic body, it bends by hitting the inner wall 2521 of the side surface 252 of the cylindrical device 25, and the support balls 24 roll left and right and front and back. The base 2 is designed not to bend beyond the diameter of the disk 23, so the rolling is limited within the cylindrical device 25. When the earthquake stops, the support balls 24 roll to the center of the groove and become stable.

[0010] FIG. 2 shows a diagram of the seismic isolation device of the present invention in use. The seismic isolation devices 1 are embedded at regular intervals into the concrete foundation 53 of a building. The building's foundation is fixed with screws through the screw holes 42 facing the side of the tray 4. The support 22 of the vibration isolation device 1 is inserted into the recess of the tray 4 and passed through the hole 41 in the tray up to the top of the foundation of the building, and then fastened with a nut. The bottom end is connected by welding to the lower circular plate 232. This allows the support 22 of the upper disk 231 of the vibration isolation device and the receiving tray of the building foundation to be integrated. A tray integrated with the foundation of the building is placed on the flange 3 of the seismic isolation device. When an earthquake occurs, the seismic isolation device 1 absorbs the vibrations.

[0011] FIG. 3 is a photograph of the seismic isolation device of the present invention in operation. The seismic isolation devices 1 are placed at predetermined intervals on the foundation 53 of the building. The number of seismic isolation devices 1 to be placed is determined based on the weight, size, etc. of the building.

[0012] FIG. 4 is a photograph of the seismic isolation device of the present invention. The vibration isolation device is made of stainless steel and supports the foundation of the building. A void is drilled into the foundation rise, cement is poured into the hole, and the device is placed inside. Eight steel balls 262 are embedded in the top of the vibration isolation device, and the foundation of the building is placed on top of them. Then, the support 22 is passed through the building foundation and fixed. When an earthquake occurs, the elastic disk 233 in Figure 4 flexes to dampen the vibrations. FIG. 5 shows the seismic isolation device of the present invention with a tray placed on it. The tray and the building foundation are fixed with screws through screw holes 42 provided on the side of the tray. A receiving tray integrated with the foundation of the building is set on top of the multiple steel balls 262 of the flange 3. When an earthquake occurs, the base of the building integrated with the tray slides on the steel balls 262, and the vibration is reduced by the vibration isolation mechanism of the vibration isolation device 1. [Explanation of symbols]

[0013] 1 Seismic isolation device 2 Mounting stand 21 Main unit 22 Support 23 Disc 231 Upper Disc 232 Lower Disc 233 Elastic Disk 24 Support ball 25 Cylinder 251 Top 252 Side 2521 Inner side wall 253 Bottom 3 Flange 361 holes 362 steel ball 363 Main unit 4 Saucer 41 holes 42 Screw hole 5. Building 51 Foundation 52 Pillars 53 Basics 54 Float

Claims

[Claim 1] The device is provided with a cylindrical base 2 and a flange 3. The base 2 includes a base body 21 formed of a cylindrical container with a bottom, an upper disk 231, a lower disk 232, an elastic disk 233 sandwiched between the upper disk 231 and the lower disk 232 and having a diameter larger than that of the upper disk 231 and the lower disk 232, and a support ball 24. The support 22 extends upward from the center of the upper disc 231, The support ball 24 is disposed under the lower disc 232. The bottom surface 253 of the cylindrical container 25 is cone-shaped with the center being the lowest, and the support ball 24 is configured to be stably positioned in the center of the cone when there is no earthquake. The flange 3 is fixed to the upper part of the cylindrical body 25, and has a plurality of holes 361 at the upper part, into which small steel balls 362 are inserted. This seismic isolation device for a detached house is characterized in that the support 22 is passed through a hole 41 provided in the center of a tray 3 for receiving the foundation of the building, and the tray with the foundation of the building placed on it is placed on the steel ball 362 of the flange, so that when an earthquake occurs, the tray of the foundation slides on the steel ball 362 to reduce shaking.

Images