JPS62156471A - Dry vibrationproof floor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dry vibration-isolating floor that absorbs and blocks floor impact sounds (solid vibration sounds) derived from various daily activities in a building.

The present inventor has already published Utility Model Publication No. 5241 of 1983 and Special Publication No. 53-
29936 and Special Publication No. 53-32184, we developed soundproof flooring technology for preventing floor impact noise, and further
In No. 22448, a floor plate for preventing floor impact noise was developed and has already been put into practical use, but these technologies all use wet materials such as mortar and concrete to finish the upper part of the buffer plate 1. There are disadvantages such as the construction period and man-hours are too long, and the weight of the finished floor becomes excessive.
It was not always suitable for small-scale construction or remodeling work due to the high cost.

For this reason, attempts have been made to correct this drawback by using dry materials such as plywood and particle board instead of wet materials such as mortar and concrete for the top finishing of the buffer plate 1.
If the top finish of the buffer plate 1 is changed from a wet material such as mortar or concrete to a dry material such as plywood or particle board, the latter will be thinner and lighter, so the natural frequency of the vibration-proof floor will increase (become larger). Also, finish plate 3 must be used in a specific frequency range.
This had the disadvantage that resonance occurred and the performance in preventing floor impact noise (solid movement noise) deteriorated.

The present invention takes advantage of these points.

Penetrating or semi-penetrating slits 4 are installed at predetermined intervals in a finishing board 3 made of plywood, particle board, etc., which is tightly placed on a buffer board 1 laid on a floor base 11 of a building, and asphalt paper is placed on top of the finishing board 3. , by pasting a flexible thin plate 5 such as a resin sheet.

The finishing plate 3 on the buffer plate 1 is made of dry material, making it lightweight.

This makes it possible to construct a lightweight vibration-proof floor using a high-performance dry material that does not reduce floor impact sound prevention performance in a specific frequency range even if it is thin.

Next, the first embodiment of the present invention will be explained with reference to FIG. 1. In FIG. 2, 11 is a floor base of a building, and if the surface is uneven, a leveling layer 10 is applied. Also 9
is a wall base of a building, and its surface is also coated with a leveling layer 8 like the floor base 11.

1 is a buffer board having a predetermined thickness made of inorganic fiber material such as glass wool or rock wool;
1, and the wall edge is in contact with the wall base 9 and the leveling layer 8 via the end strip 7 whose main fiber direction is the longitudinal direction.

A through or semi-through slit 4 is provided on the buffer plate 1.
A finishing plate 3 having a diameter is closely installed.

The width of the slit 4 is about 1 mm to 2 mm, the slit 4
The standard spacing is 1QQmm to 3QQmm, and the optimum dimension is determined depending on the thickness of the buffer plate 1 and the thickness of the finishing plate 3. Furthermore, whether the shape of the slit 4 is a through or semi-parallel type as shown in Figure 3a, a V-cut molding as shown in Figure b, or a double V-cut type as shown in Figure 0, there is no change in the floor impact noise prevention performance. Furthermore, a flexible thin plate 5 such as asphalt paper or a resin sheet is pasted on the surface of the finishing board 3 having the slits 4 in order to prevent the elongated boards between the slits 4 of the finishing board 3 from vibrating apart due to floor impact. It is worn.

Incidentally, it is also possible to attach the flexible thin plate 5 and the buffer plate 1 to the front and back surfaces of the finishing plate 3 in advance.

Normally, a floor decorative board 6 is applied to the top layer, but since the anti-vibration floor according to the present invention has excellent floor impact sound (solid impact sound) prevention performance, it is preferable to use a wood-based hard decorative board. is also possible.

The impact now applied to the floor surface first vibrates the floor decorative board 6, and then the finishing board 3. This impact vibration is absorbed and attenuated by the elasticity of the buffer plate 1, but if the material constituting the finishing plate 3 is a dry material as in the present invention, it is lightweight and thin, so the natural frequency of the entire vibration-proof floor is Get bigger.

Therefore, a large amount of floor impact energy is transmitted. That is, since the vibration isolation performance is poor, more floor impact noise is transmitted to the floor base 11 of the building and radiated to the lower floor or adjacent room. In particular, when the floor decorative board 6 is hard, the floor impact energy is large and the damage caused by floor impact noise is correspondingly large. For this reason, in a dry type vibration-proof floor, it is necessary to soften the buffer plate 1 to compensate for the dry weight of the finishing plate 3 to prevent an increase in the natural frequency. There is a peculiar phenomenon of deterioration of floor impact noise prevention performance, which is caused by resonance in the area, which was considered to be a fatal drawback of dry type vibration-proof floors until now. That is, as shown by the broken line a in FIGS. 4 and 5, at 250 cycles, a phenomenon in which the floor impact energy is particularly noticeable in transmission to the lower floor occurs. This phenomenon is a common phenomenon as can be seen in the references listed at the end of this article, and up until now, the thickness of the finishing plate 3 has been increased to a considerable extent to make it heavier, or the weight of the original material has been changed to mortar, concrete, etc. The only solution was to change to a wet material that had a

As described above, the present invention solves the various problems associated with the dry process of the finishing plate 3 by providing slits 4 in the finishing plate 3 on the buffer plate 1.
This problem was solved by pasting a flexible thin plate on top of it, making it possible to create a dry thin vibration-proof floor.

In other words, if the floor finishing board 3 is a flat plate that is lightweight and thin and does not have slits 4, the entire floor finishing board 3 will be elongated in the same direction with a large wavelength (low frequency) like a large fan due to impact vibration. There is a tendency for the oscillation to continue over time, and this becomes noticeable after 250 cycles. However, if the finishing plate 3 is provided with the slits 4 as described above as shown in the embodiment, the finishing plate 3 will vibrate for a short period of time at a small wavelength (high frequency), just like moving a small fan. This made it possible to almost eliminate the resonance phenomenon of the finishing plate 3 at 250 cycles, and therefore it became possible to prevent the deterioration of the floor impact sound prevention performance of the dry type vibration-proofing floor due to the drying of the finishing plate 3. .

Figures 4 and 5 show the results of actual measurements of floor impact noise prevention performance when the finishing plate 3 is provided with through slits 4 and when no slits 4 are provided.

The former is represented by a solid line and the latter by a broken line a.

FIG. 4 shows an example in which the thickness of the buffer plate 1 is 1Q mm.

FIG. 5 shows an example in which the thickness of the buffer plate is 25 mm.

Other specifications are common to Figures 4 and 5, and the thickness of the finishing plate 3 is 9.
The slit 4 is a through-parallel type with a width of 1 m on the mm plywood.
m was set at intervals of lQQmm, and the flexible resin sheet 5 on the finishing plate 3 had a thickness of 1 mm. The measurement results shown in both figures clearly show that the slits 4 in the finishing plate 3 have improved the floor impact noise prevention performance over 250 cycles.

This shows the effect of the present invention.

FIG. 2 is a second embodiment of the present invention.

This shows a strip 2 and an end strip 7 whose main fiber direction is longitudinal at the end or seam of the buffer plate 1. As mentioned above, if the buffer plate 1 is made softer to suppress the increase in the natural frequency of the vibration-proof floor, or if the spacing between the slits 4 is made narrower to prevent resonance of the finishing plate 3,
If the load from the floor is excessive, the floor may partially sink and deform.

In order to prevent this, a board made of glass wool, rock wool, etc. made with the main fiber direction in the horizontal direction is cut to a specified width, then stood upright, and the main fiber direction is When the thin strips 2 or the end thin strips 7 are placed in a predetermined position so that the fibers are oriented vertically, they form a bundle because the difference in fiber direction increases the compressive strength. Since the elongated plate pieces between the slits 4 of the finishing plate 3 are supported by the finishing plate 3, subsidence deformation of the floor surface hardly occurs under the permissible load even if the buffer plate 1 is soft. If the buffer plate 1 is thick and has a large hardness, or if the slit 4 interval is large, there will be little subsidence deformation due to the load on the floor surface, so the other thin strips 2 except for the end thin strips 7 are not necessary. do not have.

It is to be noted that it is more convenient during construction if the thin strip 2 is brought into close contact with the periphery of the buffer plate 1 in advance.

In this way, the dry vibration-proof floor of the present invention does not reduce the floor impact noise prevention performance even when dry lightweight materials are used, and can extremely effectively prevent solid vibrations on the upper floor of a building, and can also be used on floors on the same floor. Since it also blocks the propagation of solid vibrations on the surface, it is possible to significantly improve the living environment of the floor below or in the next room.

In addition, all the constituent materials of the dry vibration-proof floor are dry and lightweight.
The number of construction projects and construction time can be shortened, and small-scale construction work and remodeling work can also be supplied at low cost.

References Sho Nikimura [Architectural Acoustics and Noise Prevention Plan JP12]
1

[Brief explanation of drawings]

1 is a sectional perspective view, FIG. 2 is a sectional view, FIG. 3 is a partial detailed view, and FIGS. 4 and 5 are performance measurement graphs. Code 1: Buffer plate, 2: Thin strip, 3
...Finishing plate, 4...Slit, 5...
...Flexible thin plate, 6... Floor decorative board, 7...
...End strip, 9...Wall base. 11... Floor base. Patent applicant: Domus Design Office Representative Dai
Kawa Rikishiki volunteered to write the table procedure correction)

Claims (1)

[Claims] 1. A buffer board 1 of a predetermined thickness made of an inorganic fiber board or an elastic resin board is laid on a floor base 11 of a building, and a through or semi-through slit 4 is formed on the buffer board 1. A dry type vibration isolator characterized in that a finishing plate 3 made of plywood, particle board, etc. is installed at predetermined intervals, and a flexible thin plate 5 made of asphalt paper, resin sheet, etc. is adhered to the surface of the finished plate 3. floor. 2. Inorganic fibers with the main fiber direction aligned in the longitudinal direction are placed at the ends or joints of the buffer board 1 of a predetermined thickness made of an inorganic fiber board or an elastic resin board made with the main fiber direction aligned in the horizontal direction. A buffer plate 1 into which narrow strips 2 or end thin strips 7 made of aluminum are tightly inserted is laid on the floor base 11 of the building, and through- or semi-through slits 4 are installed at predetermined intervals on it. A finishing board 3 made of polished plywood, particle board, etc. is installed closely,
The dry vibration-proof floor is further characterized in that a flexible thin plate 5 of asphalt paper, resin sheet, etc. is adhered to the surface thereof.