JPS6319446Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention mainly relates to a vibration isolator that is interposed between a slab and a floor panel of an apartment complex and exhibits a blocking effect against the propagation of impact sound.

BACKGROUND ART Conventionally, in apartment complexes, measures to block solid sound from impact vibrations applied to floors on lower floors have been a major problem.

Therefore, a rubber sheet was laid on the top surface of the slab, a vibration-proof rubber block with a flat bottom surface with screw rods protruding from the top surface of the slab was placed at appropriate locations, and through holes were drilled in the floor panel. The above-mentioned screw rod was inserted into this hole to fix the floor panel and the vibration-proof rubber block, or a panel support material with a female thread was inserted into the hole in the floor panel and placed on the top surface of the slab. A device in which a vibration-proof rubber mass having a flat bottom and the floor panel is connected via a screw rod is used.

However, the rubber sheet has a small effect on a wide frequency band and has a small insulation effect, and furthermore, it is necessary to sufficiently correct the unevenness of the slab and adjust the level. In addition, when using vibration-proof rubber blocks, the former must be screwed to the bottom of the floor panel, so
Construction is time-consuming and the bottom surface of the vibration-isolating rubber block is flat, so in order to stabilize the installation of the vibration-isolating rubber block and floor panel, it is necessary to sufficiently straighten the unevenness of the slab. be.

This invention is easy to install and has an effective insulation effect against shock and impact noise by overlapping the flat surfaces of two rubber sheets with a plate interposed between them, each side of which has a plurality of hemispherical protrusions. The vibration isolator is large and easily adapts to the slab surface, can be used even when unevenness correction has not been done sufficiently, and can provide a vibration isolator that responds quickly to the target sound source depending on the material of the intervening plate. be.

The configuration of the present invention will be described in detail based on embodiments shown in the drawings.

Figures 1 and 2 show two elastic sheets 1,
Four hemispherical convex portions 1a, 2a arranged in two rows are formed on each of the elastic sheets 1, 2, and the flat plate surfaces of the elastic sheets 1, 2 are stacked with a plate 3 interposed therebetween to form a spherical body A. It is a combination. The plate 3 may be made of wood or synthetic resin, or may be a composite plate of lead, metal, or these and wood or resin,
The plate may be coated with rubber latex. This selection is made in response to the target impact sound.

The plan view shown in Fig. 3 shows a second embodiment of the present invention, in which the flat surfaces of two elastic sheets 1 and 2, each having a semi-spherical protrusion 1b formed at each of the four corners, are overlapped with a plate therebetween to form a spherical body A. As described above, the spherical body may be provided within the surface of the elastic sheet, or may be provided at a position protruding from the elastic sheet.

In the present invention, with the above structure, the spherical body A made of an elastic material is interposed between the slab and the floor panel and makes point contact with both, so that the insulation effect on impact noise propagated to the slab and floor panel is large. In addition, by interposing the plate, a damping effect over a wide frequency band can be obtained. In other words, in general, when a damping material is pasted on a vibrating plate, damping occurs due to the expansion and contraction of the damping material, and the damping material on the vibrating plate has a rigidity that restrains the deformation of its upper surface. This is because if a plate body with a certain angle is provided, in addition to the effect of the former case, a shift occurs and a combination of the two acts attenuating the vibration energy, thereby absorbing the vibration energy.

Moreover, the frequency band that is attenuated varies depending on the weight, hardness, and viscosity of the intervening plate, so by selecting the material of this plate, it is possible to support a wider range of frequency bands, making it ideal for the conditions at the construction site. This is an extremely excellent product that can provide vibration isolation.

Furthermore, since it is a point contact, even if the unevenness of the slab is not sufficiently corrected, unlike conventional flat vibration damping materials, there is no problem with the contact surface with the floor panel.

In addition, even in the case of point contact, the spherical bodies are arranged side by side, providing excellent stability, and the work can be done simply by dotting them at appropriate locations on the top surface of the slab and laying the floor panel on top of them. Efficiency is also significantly improved compared to conventional vibration isolators.

Note that a large number of spheres having the above configuration can be formed and used as a vibration isolation panel.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the invention, FIG. 2 is a perspective view of an embodiment of the invention, and FIG. 3 is a plan view of another embodiment of the invention. 1, 2...Elastic sheet 2, 3...Plate body 3, 1
a, 2a, 1b... convex portion 2a, A... spherical body A.

Claims (1)

[Scope of utility model registration request] A vibration isolator characterized in that the flat plate surfaces of two rubber sheets each having a plurality of hemispherical convex portions formed on one side are overlapped with a plate interposed therebetween.