JPH06322953A - Structure of vibration-proof floor - Google Patents

Abstract

PURPOSE:To provide sound-insulating property and habitability at the same time. CONSTITUTION:Only when a force in a specific load range is exerted on a floor, a floor substrate material 4 is displaced largely, that is, in the case of an item which is liable to fall down on the floor, particularly when such item having such weight falls down, the buckling portion of a vibration-proof material 2 is greatly displaced to efficiently absorb the falling impact force. When there are walkers, a stopper function is generated by a compressed portion of the material 2, whereby the displacement of the material 4 is limited as small as possible thereby preventing the vibration of the floor, so that habitability also can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration-proof floor structure installed on a floor base such as a concrete slab, and particularly to a vibration-proof floor structure capable of effectively absorbing impact energy of a falling object in a specific load range. It is about.

[0002]

2. Description of the Related Art In concrete apartments, sound insulation performance is particularly required, and various floor structures for preventing noise from propagating downstairs have been proposed.
As such a floor structure, for example, when the impact energy when an object falls on the floor surface is effectively absorbed and the impact energy is to be propagated to the downstairs as much as possible, the displacement amount with respect to the external force is It is said that it is preferable to interpose as large a vibration isolator as possible without a changing rate (hereinafter referred to as a displacement rate).

Therefore, in order to increase the absorption of impact energy and improve the sound insulation performance by using such a vibration isolator, for example, a rubber or the like which is a material for forming the vibration isolator 100 shown in FIG. The spring constant can be reduced by selecting a material having a small hardness or density, two materials 101A and 101B having different hardness as shown in FIG. 12 can be used, or a vibration proof as shown in FIG. A measure such as enlarging a part of the material 102 to increase the displacement rate is made.

[0004]

However, in such a means, when an attempt is made to increase the displacement rate in order to improve the vibration absorbing performance, the floor displacement amount when a load is applied is also increased, which results in an extreme In such a case, when a person walks, the floor may sway, or the floor may sink, resulting in a decrease in habitability.

As described above, the sound insulation property and the habitability are contradictory to each other. Therefore, there is a strong demand for the development of a floor base structure satisfying both of them. Therefore, in view of the above-mentioned drawbacks, an object of the present invention is to provide a floor base structure that simultaneously satisfies both sound insulation and comfortability.

[0006]

That is, the present invention comprises a vibration isolator disposed on a floor base such as a concrete slab and a floor base material supported by support legs fixed to the vibration isolator. A vibration-proof floor structure, wherein the vibration-damping material exceeds the specific range, and a buckling portion that buckles when a load in a specific range acts on the floor-base material and moves the floor-base material largely up and down. And a compressing portion that suppresses vertical movement of the floor base material by compressive displacement together with the buckling portion when a load is applied.

[0007]

According to the present invention, the floor is largely displaced only when the force in the specific load range acts on the floor, that is, the floor impact force in a specific range such as running around of a person or JIS / A1418 heavy impact source. On the other hand, the floor is greatly deformed and the impact force of the drop is efficiently absorbed. Further, in the case where the above heavy objects are loaded on the floor, the stopper function acts to suppress the displacement of the floor as much as possible to prevent the floor from shaking.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a vibration-isolating floor structure according to the present invention. In this vibration-isolating floor structure, a vibration-damping material 2 having a buckling portion 2A and a compression portion 2B is arranged on a floor base 1 such as a concrete slab. Installed and fixed to this anti-vibration material 2.
It has a structure in which a floor base material 4 is attached so as to project from the support legs 3.

The buckling portion 2A of the vibration isolator 2 has a load smaller than a specific range, such as an impact when a person walks on the floor or a relatively light article dropped on the floor.
By moving the floor relatively small up and down by the compressive deformation of the floor, the floor impact energy is effectively absorbed, and the floor is relatively large due to the buckling deformation of the buckling portion 2A for a specific range of load. It moves up and down and effectively absorbs the floor impact energy. As a result, the energy propagating downstairs and the impact sound accompanying it are effectively absorbed, and the sound insulation performance against the fall of a specific object is improved.

The buckling portion 2A of this embodiment has a rubber hardness of 40.
It is made of rubber or a plastic resin material which is a rubber-like elastic body of JIS or above, and as shown in FIG. 2, the lower end portion 20 is lower than the lower end surface of the compression portion 2B by a certain amount h, and , Projecting outward. And, this vibration-damping material 2 is in a state where only the lower end portion 20 of the buckling portion 2A is normally in contact with the floor base surface 1 (when no load is applied to the floor surface), and the specific object is just dropped. With the floor impact force at this time, only the lower end portion 20 is buckled and deformed to effectively absorb the impact energy, so that it is possible to improve the sound insulation effect such as prevention of noise to the downstairs.

Further, the compressing section 2B does not displace the floor surface so much (vertical movement) when the load exceeds a specific range of load, for example, when moving furniture or heavy objects placed on the floor, that is, the floor. The habitability is improved by effectively suppressing the shaking and sinking of the trees. As shown in FIG. 2, the compression portion 2B of this embodiment is formed in a substantially cylindrical shape with a constant gap d maintained with respect to the inner peripheral surface of the buckling portion 2A,
The upper portion is integrally connected to the buckling portion 2A, and a hole 21 for the support leg 3 to enter is formed in the central portion.

The hole 21 and the compression portion 2B on the periphery thereof
A mounting bracket 6 (see FIG. 1) is fixed on the upper surface, and a male screw portion 31 (see FIG. 1) below the support leg 3 is screwed into a female screw portion (not shown) formed on the mounting bracket 6. It has become.

The support portion 3 has male and female screw portions 30 on both upper and lower ends.
31 is provided, and is adapted to be screwed with the respective male screw portions (not shown) of the mounting brackets 5 and 6 fixed to the floor base material 4 and the vibration isolator 2. Further, the male screw portions 30 and 31 are threaded in opposite directions. For example, a groove of one letter or a cross letter is formed on the upper surface of the support leg 3, and a screwdriver or the like is engaged in the groove to rotate the screw. By moving the floor base material 4, the level of the floor base material 4 can be freely changed to adjust the floor height.

Next, the operation of this embodiment will be described with reference to the vibration damping material 2
This will be described with reference to the graph I of FIG.
The remaining II and III in the graph shown in FIG. 3 show the characteristics of the conventional vibration isolator. For example, when a light specific object having a floor impact force of f ₁ or less is accidentally dropped on the floor, the floor (floor base material 4) hardly moves up and down as shown in Graph I. Since the energy is not so large, the energy propagated downstairs is also small, and the sound insulation effect has almost no problem.

Further, as in the specific object, as a floor impact force f _2, the impact force within a range that exceeds the previous f ₁ (f ₁ <f
₂ <f ₃ , where f ₂ is at least the floor impact force generated when the person runs around), and the impact force f within this area
_In Fig. 2, the lower end portion 20 of the buckling portion 2A is largely displaced in the direction of expanding outward in Fig. 2, so that the floor moves largely up and down in accordance with the decrease in the inclination of the graph I in that range. While absorbing impact energy efficiently. Therefore, such people's running around and JIS A14
The 18-weight shock source is effectively shielded from noise, and the propagation of noise downstairs is greatly suppressed. In this way, the floor impact force is due to the large expansion deformation operation to the outside of the lower end portion 20 of the buckling portion 2A to the previous f _3, to the lower surface and buckling deformation to the same level of compression unit 2B.

However, when a relatively heavy heavy object acts on the floor (floor base material 4) as an impact force f (f <f ₃ ), the buckling portion 2A and the compression portion 2B themselves are compressed and deformed in the vertical direction. Absorbs the impact energy. That is,
In this case, since the buckling portion 2A and the compression portion 2B both absorb the impact energy,
As shown in Graph I, the vertical movement of the floor (floor base material 4) is significantly suppressed as compared with when a specific object is dropped. In other words, the buckling portion 2A and the compression portion 2B act as a stopper mechanism. To do.

Next, various modifications of the vibration damping material according to the present invention will be described with reference to FIGS. 4 to 10. Figure 4
In the vibration-proof material 7 shown in FIG. 7, the buckling portion 7A is formed to be thinner than that of the previous embodiment, and the compression portion 7B is formed to be thicker. The lower end portion 70 of the buckling portion 7A projects inward. As shown in FIG. 5, the vibration isolator 8 includes a buckling portion 8A and a compression portion 8
B may be formed in a reverse positional relationship with the inside and outside.

In the vibration isolator 9 shown in FIG. 6, the buckling portion 9A and the compression portion 9B are formed as separate bodies, and the buckling portion 9A is set on the compression portion 9B. Further, in the vibration isolator 10 shown in FIG. 7, the hole 10C for mounting the support leg is formed so as not to penetrate the compression portion 10B. Further, as the vibration isolator 11, as shown in FIG.
1A is entirely curved in a convex shape, a cross-sectional shape in which the lower portion of the buckling portion 12A is enlarged downward as shown in FIG. 9, or a lower portion of the buckling portion 13A in FIG. It may be formed in.

[0019]

As described above, according to the present invention, in order to absorb the floor impact energy generated when a load in a specific range acts on the floor, the load impact energy is absorbed particularly effectively against such load. It has a buckling part that can be largely displaced, and by creating a characteristic that this load range exactly matches the impact force on the running around of people and the source of heavy impact, noise that frequently occurs daily Can be effectively absorbed, which in turn leads to improved sound insulation performance for downstairs and the like.

Further, according to the present invention, the vibration isolator is provided with the compression portion, and when a large load which cannot be dealt with only by the displacement of the buckling portion acts on the floor, the displacement of the floor surface is made as small as possible. For example, by placing furniture so that the floor surface does not move significantly when moving heavy objects, it is possible to prevent walking difficulties due to the shaking of the floor. It also leads to improvement of.

[Brief description of drawings]

FIG. 1 is a sectional view showing a floor base structure according to the present invention.

FIG. 2 is a sectional view showing a vibration damping material according to the present invention.

FIG. 3 is a graph for explaining the operation of the present invention.

FIG. 4 is a sectional view showing a modified example of the vibration damping material according to the present invention.

FIG. 5 is a sectional view showing a modified example of the vibration damping material according to the present invention.

FIG. 6 is a sectional view showing a modified example of the vibration damping material according to the present invention.

FIG. 7 is a cross-sectional view showing a modified example of the vibration damping material according to the present invention.

FIG. 8 is a sectional view showing a modified example of the vibration damping material according to the present invention.

FIG. 9 is a cross-sectional view showing a modified example of the vibration damping material according to the present invention.

FIG. 10 is a cross-sectional view showing a modified example of the vibration damping material according to the present invention.

FIG. 11 is a cross-sectional view showing a conventional vibration damping material.

FIG. 12 is a cross-sectional view showing another conventional vibration damping material.

FIG. 13 is a cross-sectional view showing another conventional vibration damping material.

[Explanation of symbols] 1 Floor base 2,7,8,9,10 Anti-vibration material 3 Support legs 4 Floor base material

Claims (1)

[Claims] 1. A vibration-proof floor structure comprising a vibration-proof material arranged on a floor base such as a concrete slab, and a floor base material supported by support legs fixed to the vibration-proof material. A swinging member is a buckling portion that buckles when a load in a specific range acts on the floor base material and moves the floor base material up and down greatly, and the buckling portion when a load exceeding the specific range acts. In addition, a vibration damping floor structure is provided, which further comprises a compression portion that compressively displaces to suppress the vertical movement of the floor base material.