JPS62107162A - Floor structure in house - 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 (Industrial Application Field) The present invention reduces the transmission of heavy lightning impact vibration VJ sound generated when a child or the like jumps on the floor in a house, especially an apartment complex, from being transmitted downstairs. This is related to the floor structure.

(Prior Art) In recent years, impact vibration noise coming from upstairs in apartment complexes has become a major social problem. These impact vibration sounds can be roughly divided into light impact vibration sounds such as footsteps, and heavy impact vibration sounds when a child or the like jumps (for example, the impact force is 3875 N, the generated sound is 60
d3). Among these, the lightweight 'fij impact vibration sound is
The problem can be easily solved by laying soft materials such as carpets or tatami mats on the floor surface to reduce absorption.

On the other hand, there is no sufficient solution to the weight impact vibration noise, but known measures to reduce the weight impact noise include increasing the thickness of the floor slab and creating a floating floor structure. That is, in the former method of increasing the floor slab thickness, for example, the thickness of the floor slab is increased to 300 Il, which is twice the normal thickness.
111, the impact force of 3875 N and the generated sound of 60 d3 can be reduced by about 12 CB, and for reference, the noise level L according to the Architectural Institute of Japan standard is 55 CB. The latter floating floor construction method requires an upper floating floor layer (concrete thickness 50111111) and a buffer layer (glass wool 96
km”.

This is a method of reducing the impact force applied to a concrete slab by a thickness of 25 to 50 Ill111〉, and this reduction effect is determined by the double yang of the upper floating floor layer and the spring constant of the buffer material, and the weight of the upper floating floor layer is large. Moreover, the wedge effect of the small spring constant of the buffer material is large. For your reference,
Slab thickness 150n+m and glass wool spring constant 8X1
At 06N/n+', the noise level L is 50cf3.

(Problem to be Solved by the Invention) However, both of the above-mentioned conventional measures for reducing weight impact vibration noise require increasing the concrete thickness of the floor, so an increase in the floor weight cannot be avoided. In high-rise buildings, this method is disadvantageous in terms of structural design and has the disadvantage of significantly increasing costs.

The present invention has been made in view of the above problems, and its purpose is to provide a floor structure that utilizes the vibration absorption effect caused by load deformation of leaf spring bodies, thereby causing an increase in floor weight and floor thickness. To effectively reduce weight impact vibration noise without causing any noise, and to effectively prevent its propagation to downstairs.

(Means for Solving the Problem) In order to achieve the above object, the solution of the present invention is to install a plurality of cushioning materials made of leaf spring bodies each having a convexly curved upper surface on the subfloor of a house or the like. Lay down. In this case, a suitable distance is left between the side edges of each cushioning material, and the lower end edge of each cushioning material is placed so as to be able to slide sideways against the floor base. Further, a rigid plate is stretched over the upper surface of the cushioning material, and a floor raising material is provided on the rigid plate.

(Function) With the above configuration, in the present invention, when a weight impact force is applied to the floor, the impact force acts on each cushioning material through the floor finishing material and the rigid plate. Since it is made of a convexly curved leaf spring body, it deforms into a flattened shape so that the height of the convex portion becomes lower in response to the above-mentioned buffering force. At this time, since the lower end of each cushioning material is placed so that it can slide freely against the flooring, the cushioning material deforms smoothly, and there is an appropriate distance between the side edges of each cushioning material. Therefore, the side edges of the cushioning material do not interfere with each other as the cushioning material deforms.

Due to the flattened deformation caused by the side-slipping of the lower edge of the cushioning material, the impact force is absorbed and relaxed as deformation energy of the loose machine, reducing its propagation to the subfloor material, and the problem of weight impact vibration noise (frequency 63 ~250H2 bass vibration)
This means that it is possible to effectively prevent the water from passing through to the lower floors.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 shows a floor structure according to an embodiment of the present invention.

In the figure, reference numeral 1 indicates a subfloor made of a concrete slab or the like in a house, etc. On the subfloor 1, a plurality of cushioning materials 2, 2. ...is arranged.

The buffer 02.2. ... Particle board as a rigid board is placed on the upper surface 5.5. ... are integrally adhered to the upper end portion of each cushioning material 2 via a cushion G5a formed on the lower surface thereof, and are connected and stretched to each other by a real structure, a recessed structure, etc. The particle board 5.5. ...More plywood on top6.6. ...
The bonding position is the particle board 5, 5.・・・
The plywood 6°6. ...A floor finishing material 9 made of felt 7, carpet 8, etc. is placed on top to form a floating floor structure.

As shown in FIG. 2, each of the above-mentioned cushioning materials 2 is made up of a plurality of (four in the figure) plate-like bodies 3, 3 whose upper surfaces are curved in a convex central portion.
．． ... as a partially elastic body 4, 4. ...
It is made up of stacked leaf spring bodies laminated and bonded with . Each of the plate-like bodies 3 is, for example, a metal plate, a plastic plate, an FRP plate 1 or a plywood plate.

Fibreboard, particleboard, asbestos slate.

It is made of a composite plate made of these materials, and its degree of curvature is, for example, as shown in Fig. 3, with a width dimension W of 600 to 2000 am.
The arrow height dimension H of the central convex part is H = 10 to 100 mm.
It is set so that

And between the side ends of the above-mentioned adjacent cushioning materials 2, 2,
Appropriate intervals are provided so that the side edges of the cushioning material 2 do not buffer against each other when the cushioning material 2 is deformed in the flat direction. The lower edge of each cushioning material 2 is formed into a curved surface by a cutout in the lower edge of the lowermost plate-like body 3, and is placed on the floor base 1 via a resin sheet 10 as a support with low frictional resistance. It is provided so as to be able to slide freely against the flooring 1.

Therefore, in the floor structure having the above configuration, when a weight impact force is applied to the floor surface, the impact force is applied to the floor finishing material 9 of the floating floor structure and the particle boards 5, 5. It acts on each buffer material 2 through...

Each of the cushioning materials 2 is made of a leaf spring body with a convexly curved central portion of the upper surface, and its lower edge is placed on the floor subfloor so that it can slide horizontally, so that it is lowered by the action of the vE impact force. The edges slide and easily deform into a flat shape, and this deformation of each cushioning material 2 weakens the impact force transmitted to the lower floor. Moreover, the leaf spring bodies constituting each of the cushioning materials 2 are made of a plurality of plate-like bodies 3, 3°, . ...
Since the rubber members 4, 4 deform and absorb light impact force, it is possible to absorb impact force that does not deform the entire leaf spring body.

As a result, the propagation of the impact force to the subfloor 1 is reduced,
Transmission of weight impact vibration sound can be effectively prevented.

In that case, each! The lower edge of each cushioning material 2 is placed on the flooring 1 via a resin sheet 1o with low frictional resistance, and the lower edge of each cushioning material 2 is formed to have a wave-shaped curved cross section. So each! 1. Due to the action of the ms force on the shock absorbers 2, their lower edges slide sideways against the floor base 1 in the direction in which the leaf spring body expands, and each shock absorber 2 smoothly forms a strong arch with the floor base 1. transforms into However, since there is an appropriate space between the side edges of adjacent cushioning materials 2.2, when each cushioning material 2 is deformed in the flat direction, the opposing side edges may (Thus, the effect of reducing the heavy IT impact vibration due to the deformation of the cushioning material 2 can be reliably obtained.)

In addition, since the shock-absorbing material 2 made of a temporary spring body absorbs the shock vibrations due to repeated placement, it has a high ability to absorb shock vibrations, and compared to the case of using an elastic mat such as a glass wool mat, the floor thickness can be made thinner and its weight can be reduced. This can be reduced and, moreover, local compression deformation due to the elastic mat does not occur.

On the other hand, in response to a light impact force such as footsteps applied to the floor surface, the shock absorbing material 2 does not deform as described above, and the shock absorbing material 2 does not deform as described above, and the shock absorbing material 2 is interposed between the plate bodies 3 and 3 of the leaf spring body in each shock absorbing material 2. rubber 4,4
．． ... is compressively deformed, and this rubber 4.4. ... and the deformation of the carpet 8 and felt 7 in the floor finishing material 9 can effectively absorb light impact vibrations.

In addition, cushioning materials 2, 2. Particle board stretched over the top surface 5.5. ...and plywood 6,6°...
Since the bonding positions of the particle boards 5, 5. The joints of ... will not be raised and appear on the surface of the floor finishing material 9.

It should be noted that the present invention is not limited to the above-mentioned embodiment, but also includes various modifications. For example, in the above-mentioned embodiment, a plurality of cushioning materials each having a central portion curved upwardly is used as a cushioning material. The plate-shaped bodies 3, 3. Partially rubber 4.4.・
I used a stacked leaf spring made by laminating and bonding with ... interposed, but as shown in Fig. 4, it was ff1ff? ! 2 lost plates 3, 3. You may also use a stacked leaf spring body in which the corresponding side ends of the springs are integrally connected by an elastic body 11 such as rubber.

In addition, as shown in FIG. 5, the back surface (lower surface) of each plate-shaped body 3 may be coated with ferrite, iron powder, sand, rubber, etc.
Alternatively, the laminated surface of the plate-like body 3 is made into an uneven surface 3a by embossing, grooves, etc., and then the plate-like bodies 3, 3.・・・
In this case, since the frictional force that acts between each plate-shaped body 3.3 increases when the cushioning material 2 is deformed, the impact force acting on the floor surface can be reduced by each plate-shaped body. The deformation of the body 3.3 and the frictional resistance between the plate-shaped bodies allow the absorption to be made even more effectively. Further, in the above embodiment, a plurality of laminated plate bodies 3, 3 . ...Rubber 4 was used as the elastic body partially interposed in between, but the 6th
A foamed plastic 12 may also be used as shown.

In addition, in the case where the lower edge of the cushioning material 2 is made to be able to slide freely against the floor substrate 1, the lower edge of the lowermost plate-like member 3 constituting the Il cushioning material 2 is notched in order to make the side sliding smoother. Alternatively, as shown in FIGS. 7 and 8, the bottom edge of the cushioning material 2 may be formed into a curved surface by bending both ends of the lowermost plate-like material 3 into a curved shape. It may also be formed. Also, instead of laying the resin sheet 10 on the upper surface of the floor subfloor 1 as in the above embodiment, resin panels 13, 13 are placed corresponding to the lower edge of each cushioning material 2, as shown in FIG.
Moreover, the surface of the floor base 1 itself may be made smooth, or the lower end of the cushioning material 2 may be made of a relatively slippery material. 2
A structure with smooth sliding may be appropriately selected depending on the type of the structure.

Furthermore, as shown in FIG.
Im corresponding! The LLI materials 2 are attached together to form a unit, and the integrated units 1 to 1 of each cushioning material 2 and particle board 5 are placed on the flooring 1 as shown in FIG. By joining the side edges of .5 together, you can install the cushioning material and the rigid board at the same time, improving construction efficiency, and just lining them up! 1. It is possible to maintain the spacing between the pieces. At this time, a crosspiece may be provided on the lower surface of the side edge of the particle board 5, and a joint portion may be formed by actual processing on the crosspiece to connect the particles.

Further, the above-mentioned tJI shock material may be formed into a wavy shape with a plurality of curved portions arranged in series, as shown in FIG.

Now, specifically, the length is 1820 mm, the width is 910 mm, and the thickness is 5.
．． A 5 mm medium weight fiberboard (specific gravity 0.6) was formed into a semi-cylindrical shape with a large island size of 5Qmn+ in the center using high-frequency heating, and 10 of the formed plates were stacked and their side edges were bonded with urethane rubber. A cushioning material was produced by joining. This cushioning material was laid on a concrete slab, and a concrete floor panel (density 2300ko/m", thickness 50mm) was placed on top of it to create a floating floor, and JI
When the floor impact sound was measured from downstairs using a weight impact sound generator specified in S standard A1418, the first
As shown by the solid line in Figure 2, the sound insulation performance of L-45 (special grade)
(q).For comparison, we created a conventional floating floor in which the above concrete floor panel was placed on the above concrete slab through a glass wool cushioning material (density 96 km, thickness 50 ml). The result of measuring floor impact sound was that the sound insulation performance of L-55 (class 1) was as shown by the broken line in Fig. 12.Therefore, the sound pressure of the invention example was 10 dB lower than that of the conventional example. It can be seen that an excellent anti-vibration effect can be obtained.

(Effects of the Invention) As explained above, according to the present invention, a plurality of cushioning materials made of leaf spring bodies are installed on the subfloor of a house, etc., and a floor finish is provided on the cushioning materials through a rigid plate. Due to the vibration absorption effect caused by the deformation of the cushioning material, heavy ffi! j-striking vibration sound (vibration in the bass range 63-250Hz)
Since it is designed to effectively absorb the above-mentioned weight impact vibrations without increasing the weight and thickness of the floor, the above-mentioned weight impact vibration can be easily and inexpensively isolated, and it is possible to provide a floor structure particularly suitable for high-rise buildings. can.

Furthermore, if the leaf spring bodies constituting the above-mentioned cushioning material are stacked leaf spring bodies, the frictional force between the laminated surfaces of the leaf spring bodies when each of the plate bodies deforms absorbs impact energy and reduces the mold impact. Vibration noise can be reduced even more effectively. Furthermore, if these plate-like bodies are partially joined together by an elastic body, even light shock vibrations can be absorbed by compressive deformation of the elastic body.

On the other hand, if the laminated surface of the plate-like bodies is made to have an uneven surface, the frictional force between the plate-like bodies can be increased and impact energy can be significantly absorbed.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a sectional view of a floor structure, FIG. 2 is a sectional view of a cushioning material, and FIG. 3 is an explanatory diagram showing the degree of curvature of a plate-shaped body. FIG. 4 is a perspective view showing modified examples of the cushioning material, and FIGS. 5 to 8. and FIG. 11 are sectional views showing modified examples of the cushioning material, respectively.
FIG. 9 is a view corresponding to FIG. 1 showing another embodiment, and FIG. 10 is a perspective view showing how the cushioning material and particle board are attached. FIG. 12 is a characteristic diagram showing the sound insulation performance of the example of the present invention in comparison with the conventional example. 1... Floor base, 2... Cushioning material, 3... Plate-shaped body, 3
a... Uneven rough surface, 4... Rubber, 5... Particle board, 9... Floor finishing material, 10... Resin sheet, 11... Elastic body, 12... Foamed plastic, 1
3... Resin panel, D... Spacing. Patent applicant: Daiken Kogyo Co., Ltd. Before the agent 1)
Hiroshi;-Jl knee 1-n, ・J d J l'
---

Claims (7)

[Claims] (1) A plurality of cushioning materials made of leaf spring bodies whose upper surfaces are curved in a convex shape are placed on the floor subfloor, with an appropriate distance between the side edges of each cushioning material, and a lower edge of each cushioning material. A house characterized in that the housing is laid so as to be able to slide sideways on the floor substrate, a rigid plate is stretched over the upper surface of the cushioning material, and a floor finishing material is provided on the rigid plate. Floor structure in etc. (2) The cushioning material is a stacked leaf spring body formed by laminating a plurality of plate-like bodies each having a convexly curved upper surface.
1) Floor structure in houses, etc. described in section 1). (3) The cushioning material is a stacked leaf spring body formed by laminating a plurality of plate-shaped bodies each having a convexly curved upper surface with an elastic body interposed therebetween. floor structure. (4) A floor structure for a house or the like as set forth in claim (2), wherein the plate-like bodies in the stacked leaf spring body have a laminated surface formed into an uneven and rough surface. (5) A floor structure in a house or the like according to claim (1), wherein the cushioning material is integrally attached to the lower surface of the rigid plate. (6) A floor structure for a house or the like according to claim (1), wherein the lower edge of the cushioning material is placed on the floor subfloor via a support made of a resin sheet or the like having low frictional resistance. (7) A floor structure in a house or the like according to claim (1), wherein the lower edge of the cushioning material is formed into a curved surface.