JPH01137065A - Floor foundation material - Google Patents

Abstract

PURPOSE: To make a substrate material dry and lightweight by providing at least one reinforcing member from one side to the other side in a rectangular frame body, providing a vertically penetrating space in the frame body, and fitting support legs to the frame body and the reinforcing member via elastic bodies. CONSTITUTION: At least one reinforcing member 2 is provided from one side to the other side in a rectangular frame body 1, a support frame 3 with a level adjusting function is provided on the long side 1A of the frame body 1 formed in the longitudinal direction, and the frame body 1 and the reinforcing member 2 are made of a wood or steel material. A base end section is fixed to the lower face of the long side 1A of the frame body 1 so that the tip of a crank- shaped mounting bracket 4 is located in the frame body 1. An elastic body 6 provided with a cavity section 6A inside is fitted to the lower end of a bolt 5 at the tip of the mounting bracket metal 4, and the underfloor air is released on the floor by an expand metal giving air permeability to a backer material 13. The interior modification of a building can be easily executed.

Description

[Detailed description of the invention] [Industrial application field] This invention is a gymnasium on the second floor of an apartment building with an RC structure.

The present invention relates to a subfloor material used in classrooms and the like, and in particular to a subfloor material suitable for applications that require floor impact sound blocking performance for downstairs.

[Conventional technology]

As shown in FIGS. 20 and 21, conventional flooring materials of this type include a large number of flooring materials 102 laid out on a concrete slab 'lO1 in a space surrounded by a building frame 100. ing.

The flooring material 102 used here has support legs 10 at the four corners of a panel body 103 whose upper and lower surfaces are closed and has a predetermined thickness.
4 was installed, and after these flooring materials 102 were laid out, a lining material 105 was pasted on the top surface.

[Problem to be solved]

As the panel body 103 used in the conventional floor base material 102, wood-based materials such as particle board and plywood are used, but floor base materials using the panel body 103 made of such materials have the following problems. There was a point.

■ Thickness 20~30mm wood panel body 103. is only supported by the support legs 104, so the panel rigidity is somewhat insufficient acoustically, and the sound insulation performance is reduced when an impact is applied between the support legs 104.

If an attempt is made to solve the problems of (1) and (2), the thickness of the panel body 103 will become too large, the weight will increase, and the workability will deteriorate.

(2) Moreover, since the panel body 103 is made of wood, the panel body 103 may warp or become distorted due to moisture under the floor.

■ In an attempt to improve sound insulation, devices have been developed in which an elastic body such as rubber is used at the bottom of the support leg 104.
The floor is too low. Furthermore, if the amount of deflection of the panel body 103 is large, cupboards installed in the living space may rattle, causing a sense of uneasiness, and the sound insulation performance in the low frequency range may not improve much, but may actually become worse than the building itself. Ta.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a flooring material that has high rigidity without increasing weight, suppresses deflection, and does not deteriorate even when exposed to moisture.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention provides at least one reinforcing member from one side to the other in a rectangular frame body, the frame body has a vertically penetrating space, and the frame body or/and and support legs equipped with elastic bodies are attached to the reinforcing material.

[Effect]

In this invention, since a frame body and at least one reinforcing member are provided in the frame body without using a panel body as in the conventional case, the weight can be reduced and rigidity can be increased, and the space penetrating vertically can be reduced. Due to its presence, moisture can escape without being trapped under the floor. In addition, since it is lightweight, it is easy to construct and does not place a burden on the building itself.

〔Example〕

Preferred embodiments of the present invention will be described below with reference to the drawings.

The flooring material shown in FIG. 1 has a rectangular frame 1 with reinforcing materials 2 extending from one side to the other. In this example, five reinforcing members 2 were provided in a ladder shape. A total of eight support legs 3 were provided on the long side IA of the rectangular frame 1. In this embodiment, the length of the long side IA is 1800w, and the length of the short side IB is 900mm.

The spacing between the reinforcing materials 2 was set to 300 cranes. Furthermore, the frame 1 and the reinforcing material 2 may be made of wood or steel. The support leg 3 has a level adjustment function. FIG. 2 shows the details of the installation of the support leg 3 shown in FIG. The base end portion is fixed to the lower surface of side IA. A bolt 5 is attached to the tip side of this mounting bracket 4, and an elastic body 6 having a hollow portion 6A inside is attached to the lower end side of this bolt 5. Further, the bolts 5 are formed with male screw portions facing in opposite directions, and the height of the frame 1 from the floor base 7 can be adjusted by rotating the bolts 5. In addition,
The mounting bracket 4 may be mounted so that its tip is located outside the long side IA, and in this case, the support leg 3 will be located outside the long side IA. Also, long side IA and short side IB
As shown in FIG. 3, by joining with adhesive and wooden dowels 8, it is possible to prevent the floor from rustling due to the fading of the material when wood-based materials are used.

Such joining means can also be performed between the long side IA and the reinforcing material 2.

Fig. 4 shows an example in which the support leg 3 is attached directly below the long side IA, and Fig. 5 shows a groove IA' formed below the long side IA.
This figure shows an example in which a support leg 3 is installed within this groove IA'.

The elastic body 6 used for the support leg 3 in each of the above embodiments has a dynamic spring constant of 30 to 40Q kg/
cm is preferable in terms of improving sound insulation properties. In addition,
4 and 5 are holes for inserting a screwdriver or the like into the screws of the bolts 5 in order to adjust the level of the support legs 3, respectively. In the structure in which the supporting legs 3 are attached by forming grooves IA'' as shown in FIG. The thickness can be increased.

The embodiment shown in FIG. 6 shows an arrangement in which one support leg 3 also supports one side (long side IA) of the adjacent frame 1. That is, as shown in FIG. 7, the lower surface side of the mounting bracket 4 is extended outward, and the lower surface of the long side IA of the frame 1 that is laid out next to it is attached to this protruding part. It is something. This means that the size of frame 1 is 600
It is suitable for application to a small size of about tl x 900 cranes.

The frames 1.1 are connected to each other as shown in FIGS. 8 to 12. Of course, each frame 1 may be installed independently on the floor base 7. Connecting the frames 1, 1 to each other improves the rigidity of the entire floor, which is also advantageous in terms of floor sound insulation performance. In FIG. 8, frames 1 are connected by bolts 10 and nuts 11, and a gasket 12 for preventing floor noise is provided between each frame 1.1. Fig. 9 is similar to that shown in Fig. 7, but the packing 12 is similar to Fig. 8.
This is provided. In the case shown in FIG. 10, the frames 1, 1 are not connected to each other by bolts 10 or mounting fittings 4, but are connected by a splinter material 13. In the case shown in FIG. 11, grooves are formed on the adjacent frame 1.1, and a groove 14 is used. There is no problem even if actual processing is performed without using Hirejitsu 14.

The one shown in FIG. 12 has been subjected to phase cutting and is connected with a bolt 10 and a nut 11.

Workability is improved by performing such a recessed process. In addition, in Fig. 10, the frame body 1.1 is
Although they are connected to each other, it is of course possible to connect them using a rigid finishing material (not shown) instead of the lining material 13. Furthermore, it is also possible to use the respective connecting means shown in FIGS. 8 to 12 in combination as appropriate.

The embodiments shown in FIGS. 13 to 15 show an example in which the exposed material 13 is made breathable, and in FIG. 13, the expanded metal 1
4 is attached. Since the expanded metal 14 has a directional property in terms of its rigidity against tension, etc., the one with higher rigidity is installed in a line perpendicular to the reinforcing material 2. When the expanded metal 14 is used, the air under the floor can escape onto the floor, so it is possible to prevent the floor from becoming distorted due to moisture, and it is also possible to improve the impact sound insulation properties. In the embodiment shown in FIG. 14, boards 15 with a width of 5 to 20 cm are arranged on the upper surface of the subfloor material along the long plane direction, and the boards 15 are arranged in a slatted shape with gaps of about 2 to 10 fl. It is composed of: Even in the case where such a plate material 15 is attached, air under the floor can escape to the floor. In addition, a predetermined gap may be provided in the width direction of the plates 15 so that gaps between the plates 15 can be easily provided on site, and the plates 15 may be connected in advance using wires or the like at a factory. 1st
In the embodiment shown in FIG. 5, perforated plates 16 are attached to the upper surface of the subfloor material.

The hole diameter is preferably about 3 to 18 m. Furthermore, although not shown, a porous board such as a wood wool cement board may be used as the lining material 13. Exband Metal 14. Plate material 15.
Each of the perforated plates 16 constitutes a lining material.

The embodiment shown in FIG. 16 takes advantage of such features of the flooring material and adds other functions.

That is, in FIG. 16, a support plate 17 is attached to the lower surface of the frame 1, and a dynamic vibration absorption system comprising a combination of a spring material 18 and a heavy object 19 is placed on the support plate 17. Possible spring materials 18 include porous foams such as urethane foam, porous fiber materials such as glass wool, rubber-like elastic materials such as anti-vibration rubber, and metal spring materials such as springs. Possible examples include a plate made of iron or concrete, two rod-shaped materials, and two spheres. Such a dynamic vibration absorption system should be tuned in consideration of the natural frequency of the floor foundation 7, and its f.

(Natural frequency of dynamic vibration absorption system) is 15 to 250 H
Preferably, it is tuned to z. In addition, the location where the dynamic vibration absorption system is installed is as shown in Figure 16 with reinforcement material 2.2.
There is an advantage that the height of the floor can be lowered by providing it in between, but if the floor can be made higher, the same effect can be obtained even if it is attached to the lower surface of the frame 1. Furthermore, the 17th
In the figure, the heavy object 19 is provided on the spring material 18, but the heavy object 19 may be suspended below the spring material 18, or the heavy object 19 may be supported by the spring material 18 from the side. Furthermore, although a dynamic vibration absorption system may be installed in all the frames 1..., the effect of the road gap etc. cannot be obtained by simply installing a system equipped with this system in a part of the floor base 7. Street. That is, the unit equipped with this dynamic vibration absorption system is placed aiming at the antinode (the point of maximum amplitude) of the negative or secondary vibration mode of the floor base 7 on which the frame 1 is installed.

The embodiment shown in FIGS. 17 and 18 shows an example in which the sound insulation performance is further improved. In FIG. 17, a perforated board 20 is attached to the lower surface of the frame 1, and the upper surface of this perforated board 20 is A porous sound absorbing material 21 is provided on the top. Due to the synergistic effect of the perforated board 20 and the porous sound absorbing material 21, the sound absorption under the floor can be greatly improved, and the sound insulation performance can be improved. FIG. 18 shows an example in which a perforated board 20 and a porous sound absorbing material 21 are provided in two stages within the frame 1, in order to further improve the sound insulation performance. Sound insulation performance can be improved more effectively by adjusting the hole diameter of the perforated board 20, the board thickness, the air layer behind it, and the material of the porous sound absorbing material 21, and by tuning the frequency at which the sound absorption coefficient peaks. It is something. Note that it is also possible to use several types of holes with different hole diameters in one perforated board 20. Furthermore, in the embodiment shown in FIG. 18, the sound insulation performance can be further effectively improved by tuning each of the multi-layered sound absorbing layers to different frequencies.

Of course, it is also possible to use the dynamic vibration absorption system shown in FIG. 16 described above in combination with the sound absorption function shown in FIGS. 17 and 18.

FIG. 19 shows the experimental results of the floor impact sound level measured based on JIS A1418. A heavy floor impact source was used as the impact source. I in the graph is measured by applying a direct impact to the floor base 7 before floor finishing material is applied to the building, and is at the level of L-65. ■ in the graph indicates the support leg 104 in the embodiment shown in FIG.
This figure shows the results of an experiment with a rubber elastic body attached to the lower end of the tube. ■ in the graph shows the result of applying an impact to the flooring material of the present invention shown in FIG. 1 arranged on the floor base 7 and with the slatted board material 15 shown in FIG. 14 attached thereto. . This is at the level of L-55, which is two ranks higher than floor foundation (concrete slab) 7. Symbol ■ in the graph shows the dynamic vibration absorption system shown in FIG. 16 attached to the flooring shown in FIG. 14, and it can be seen that the sound insulation performance is further improved in this example.

〔effect〕

As explained above, according to the present invention, at least one reinforcing member is provided in the rectangular frame from one side to the other, the frame has a space penetrating vertically, and the frame or/and And since support legs with elastic bodies are attached to the reinforcing material, it becomes a lightweight dry base material, and can be used in cases where the floor base of the building body is thin and has low rigidity, such as when renovating the interior of an old building. However, it can be easily constructed. In addition, since the frame has a vertically penetrating space, moisture under the floor can easily escape, and there is no risk of warping or deformation.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a preferred embodiment of the present invention, FIG. 2 is a detailed partial cross-sectional view of the support leg shown in FIG. 1, and FIG. FIG. 4 is a partial sectional view showing a means for attaching another support leg, FIG. 5 is a partial sectional view showing a means for attaching another support leg, and FIG. FIG. 7 is a partially sectional detailed view of the support leg portion in FIG. 6; FIGS. 8 to 12 are partially sectional views showing the means for connecting the frames to each other; FIG. 13 is a perspective view showing the embodiment; is a perspective view showing an example of using expanded metal as a lining material,
Fig. 14 is a perspective view showing an example of using a slatted plate as the bulging material, Fig. 15 is a perspective view of an example of using a perforated plate as the bulging material, and Fig. 16 is equipped with a dynamic vibration absorption system. 17 and 18 are cross-sectional views showing examples provided with sound absorbing means, FIG. 19 is a graph comparing sound insulation performance, FIG. 20 is a plan view showing a conventional example, and FIG. The figure is a side view showing the same conventional example. 1... Frame body, IA... Long side, 1B... Short side, 2... Reinforcement material, 3... Support leg, 6... Elastic body. Applicant Brideston Co., Ltd. Agent Patent Attorney Masu 1) Takeo is 2゛1 7th ρ 籟iQ! 2! 16th Gate 18' ~ ll Z (J 19th Tsubj 11ko l) U Tan J18 18 48 Gate, L Bin (Hz)

Claims (1)

[Claims] 1. At least one reinforcing member is provided in a rectangular frame from one side to the other, the frame has a space passing through it vertically, and the frame and/or the reinforcing member A flooring material characterized by having support legs equipped with elastic bodies attached.