JP2003253874A - Floor panel support structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide support structure that can prevent the flexure of a wall surface side end part of a floor panel while absorbing the vibrational energy of the wall surface side end part of the floor panel. <P>SOLUTION: The floor panel P is supported on a slab S through a space C. A pair of vibration isolating support posts 10 are arranged in an end lower face side corner region positioned on the wall surface W side of the floor panel P, and a shock absorber 30 is arranged between the vibration isolating support posts 10, 10. The shock absorber 30 is composed of a bracket 31 provided with a fixed part 34 fixed to the wall surface W, and a support part 35 continuous with the fixed part 34; and an impact absorber 32 made of a gel material or silicone foam and interposed between the upper face side of the support part 35 and the floor panel. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor panel support structure, and more particularly to a floor panel support structure capable of effectively absorbing vibration energy of a floor panel located on the wall surface side.

[0002]

2. Description of the Related Art Conventionally, a double floor has been known in which floor panels are arranged so as to form a certain space on the upper surface side of a skeleton made of concrete slab or the like. The end support of the floor panel forming this double floor is performed by (1) through a joist, and (2) so-called joist when the vibration support legs are arranged on the lower surface side of the end of the floor panel. There is a form performed through.

[0003]

However, in the support mode of the above (1), since the end portion of the floor panel is directly supported by the thick joists, almost no vibration energy is applied to the floor panel. It propagates to the skeleton such as slab or wall surface without damping, and even if vibration-proof support legs are adopted on the lower surface side other than the above-mentioned end, sufficient vibration isolation performance cannot be obtained, resulting in a large floor impact. There is the inconvenience of producing sound. In addition, a cushioning member is arranged between the upper surface of the floor joist and the floor panel in the end panel support form of the floor joist (for example, Japanese Patent Laid-Open No. 2001-2).
41179). However, since this configuration supports the floor panel over a wide surface, the actual benefit of providing the cushioning material cannot be effectively exerted, and floor impact noise cannot be sufficiently reduced.

Further, in the support form of the above (2),
As a load is applied, the floor panel end area between the anti-vibration support legs bends, resulting in poor walking sensation and a visual problem due to a gap between the floor panel and the skirting board. It will be. In order to deal with this, it is necessary to increase the number of anti-vibration support legs. In this case, however, it is necessary to take more care than necessary to fall the anti-vibration support legs. This causes another inconvenience that the sex becomes worse. Further, in this support mode, vibration-proof rubber having a relatively large spring constant may be used for the vibration-proof support legs arranged on the wall surface side of the floor panel. There is also an inconvenience that the frequency rises and it becomes difficult to reduce the floor impact sound.

[0005]

SUMMARY OF THE INVENTION The present invention has been devised by paying attention to such an inconvenience, and an object of the present invention is to flexure generated at an end portion of a floor panel without increasing the number of vibration-proof support legs used. Another object of the present invention is to provide a support structure for a floor panel that can prevent the vibration and reduce the floor impact sound level by absorbing the vibration energy applied to the floor panel.

Another object of the present invention is to provide a floor panel support structure that can easily perform a floor panel laying work in a state in which the risk of tipping the anti-vibration support legs is reduced.

[0007]

In order to achieve the above object, the present invention is a structure for supporting a wall surface side of a floor panel arranged on a slab at a predetermined interval and is located on the wall surface side. The floor panel includes a plurality of anti-vibration support legs arranged on a lower surface side of an end portion of the floor panel, and at least one shock absorber supporting the lower surface side of the floor panel between the anti-vibration support legs, wherein the shock absorber is on the wall surface side. And a shock absorbing body provided between the supporting portion and the floor panel, the supporting portion being fixed to the floor panel and extending along the lower surface of the floor panel. With such a configuration, the shock absorber fixed to the wall surface is arranged between the anti-vibration support legs on the wall surface,
The vibration generated between the anti-vibration support legs is absorbed by the shock absorber, and it is possible to effectively absorb the vibration energy and reduce the floor impact sound level. In addition, it is possible to prevent bending of the floor panel between the anti-vibration support legs,
It is also possible to avoid the possibility of causing a gap due to bending between the floor panel and the skirting board. To further elaborate on this,
In the vibration mode of the floor panel in a state where the antivibration support legs are arranged on the lower surface side of the end portion of the floor panel, the floor panel portions corresponding to the positions of the antivibration support legs are “nodes”. On the other hand, the floor panel end region between the anti-vibration support legs is close to the “belly”, and the amplitude becomes maximum at the center end of the floor panel end region. Therefore, by arranging the shock absorber between the anti-vibration support legs, it becomes possible to suppress the amplitude of the “belly”, and thereby it is possible to effectively damp the vibration energy. In addition, when laying the floor panel, by using the fixed shock absorber,
It is also possible to effectively prevent the anti-vibration support legs from falling.

Further, the present invention has a structure for supporting a wall surface side of a floor panel arranged at a predetermined interval on a slab, and is arranged in a corner area on a lower surface side of an end portion of the floor panel located on the wall surface side. A pair of anti-vibration support legs and a shock absorber located between the anti-vibration support legs, wherein the shock absorber is
A bracket formed of a fixed portion fixed to the wall surface and a support portion connected to the upper end of the fixed portion and extending along the lower surface of the floor panel, and a bracket provided on the upper surface side of the support portion and positioned between the floor panel and the bracket. In addition, a shock absorber made of a gel material or foamed silicon is provided, whereby the above-mentioned object is better achieved.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the shock absorber is a gel material made of silicon gel or styrene gel,
Alternatively, it is preferably made of foamed silicon.
By using such a material, it is possible to relatively increase the attenuation rate as compared with rubber. That is, it is possible to further improve the vibration absorption efficiency by using the gel material and the foamed silicon having a relatively small vibration transmissibility.

[0010]

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

FIG. 1 is a schematic plan view of a panel support structure according to this embodiment, and FIG. 2 is an enlarged sectional view taken along the line AA of FIG. In these drawings, a double floor is formed by arranging a floor panel P at a predetermined height position forming a space C on the upper surface side of a concrete slab S. This floor panel P is installed on the slab S and is provided with a plurality of anti-vibration support legs 10 arranged on the lower surface side of the floor panel P.
Is supported through. In addition, the floor panel P whose one end extends along the wall surface W is supported together with the shock absorber 30 arranged between the vibration-proof support legs 10.

Although the panel P is not particularly limited, in this embodiment, it is constituted by a multi-layered structure of a base panel P1 and a finishing panel P2 laid on the upper surface thereof such as a flooring. There is. Base panel P1
The side edges of the finishing panel P are arranged so as to form a gap S1 with respect to the wall surface W, as shown in FIG.
The side edge of 2 forms a gap S2 smaller than the gap S1 with the wall surface W, and is arranged so as to be located in the lower end surface region of the skirting board 40 located above.

The anti-vibration support legs 10 are arranged on the lower surface side of the floor panel P so as to straddle each panel P in an end corner region. As shown in FIGS. 3 and 4, the anti-vibration support leg 10 is located on the lower surface side of the floor panel P and is substantially rectangular in plan view, and is located on the lower surface side of the central portion of the receiving plate 20. The support leg 11 is provided with a vibration-proof elastic body 12 that supports the support leg 11, and a weight member 13 mounted on the outer peripheral side of the vibration-proof elastic body 12.

The support leg 11 is composed of a nut member 11A having an axis line oriented in the vertical direction and a bolt 11B which is screwed from the upper end side of the nut member 11A and which can advance and retreat in the vertical direction. The upper end of the bolt 11B is , Is fixed to the receiving plate 20 via a nut (not shown).

The vibration-proof elastic body 12 is made of rubber, and the vibration-proof elastic body 12 has an inner peripheral elastic portion 21 having a substantially disc shape.
The inner peripheral elastic portion 21 is formed integrally with the inner peripheral elastic portion 21, and is formed of a substantially cylindrical outer peripheral elastic portion 22 provided substantially concentrically with the inner peripheral elastic portion 21. Inner peripheral elastic portion 21
Supports the nut member 11A of the support leg 11 at the center of the upper part, while the lower surface is provided at a height forming a space C1 between the supporting leg 11 and the slab S, and a region receiving a shearing force against an impact from above is formed. To be formed. The inner peripheral elastic portion 21 is provided with a two-step tapered surface portion that becomes an inclined surface that gradually decreases in diameter around the nut member 11A, and the tapered surface portion that also becomes an inclined surface that also decreases in diameter on the lower surface outer peripheral side. With this, the support stability of the nut member 11A is ensured, and at the same time, a certain resistance is imparted when the nut member 11A is deformed in the shearing direction by an impact applied from above. .

The outer peripheral elastic portion 22 is made of a material whose hardness is relatively larger than that of the inner peripheral elastic portion 21. The lower surface side of the outer peripheral elastic portion 22 is provided at a position lower than the lower surface of the inner peripheral elastic portion 21, and is an installation portion on the slab S. On the outer peripheral surface of the outer peripheral elastic portion 22, a step portion 25 is formed at an intermediate portion in the vertical direction, and the step outer portion 25 makes the outer diameter of the upper portion of the outer peripheral elastic portion 22 smaller than the outer diameter of the lower portion. . In addition, the lower surface of the outer peripheral elastic portion 22 is formed with a plurality of grooves 26 that extend in the circumferential direction and are located on substantially concentric circles, and a plurality of fin-like portions 28 that serve as installation portions located between these grooves 26 are slabs. It is in contact with the upper surface of S and is hard to slide in a substantially horizontal direction. Here, the installation portion side of the outer peripheral elastic portion 22 is formed with a passage 29 for communicating the space C1 with the inside and the outside, and the passage 29 allows the inside of the space C1 when the inner peripheral elastic portion 21 is deformed in the shearing direction. While the air escapes, the outside air is introduced when returning to the original position so that the negative pressure in the space C can be prevented.

The weight member 13 provided on the outer periphery of the outer peripheral elastic portion 22 is made of metal or resin.
The weight member 13 has a substantially cylindrical shape, and its lower end is seated on the stepped portion 25, so that the entire vibration-isolating support leg 10 is vibration-proof even when an impact is applied from above. The integrity of the elastic body 12 and the weight member 13 is reliably maintained.

As shown in FIG. 1, the shock absorber 30 is provided between a pair of anti-vibration support legs 10 arranged on the wall surface W side on the lower surface side of each floor panel P. In the present embodiment, two shock absorbers 30 are arranged between the vibration-proof support legs 10 and 10 for one floor panel P, but the number of uses depends on the plane size of the floor panel P. Can be increased or decreased. This shock absorber 3
0 has a side end shape of substantially L as shown in FIGS.
It is configured by a bracket 31 having a character shape and a shock absorber 32 provided on the bracket 31. The bracket 31 is fixed to the wall surface W with screws 33 and has a substantially rectangular plate-shaped fixing portion 34. The bracket 31 is connected to the upper end of the fixing portion 34 and is oriented in a direction substantially orthogonal to the surface of the fixing portion 34. And a support portion 35 having a substantially rectangular plate shape along the lower surface of the floor panel P. The impact absorber 32 is disposed on the upper surface of the support portion 35 so that the impact absorber 32 is located between the floor panel P and the impact absorber 32. It is supposed to be sandwiched between. Here, the shock absorber 32 is formed of a sheet made of a gel material such as silicon gel or styrene gel, or a sheet made of foamed silicon. It should be noted that the shock absorber 32 or a material made of another material capable of exhibiting a certain cushioning effect may be interposed between the fixing portion 34 and the wall surface W.

Next, the construction procedure of the double floor according to this embodiment will be described with reference to FIG.

The anti-vibration support legs 10 are arranged on the slab S so as to be spaced from each other so as to support each corner region of the rectangular base panel P1 having a side length of about 900 mm. At this time, the anti-vibration support legs 1 arranged along the wall surface W
Two shock absorbers 30 are fixed between 0 and 10. The mounting height position of the shock absorber 30 is determined by the shock absorber 3
The upper surface of 2 is located on the same plane as the upper surface of the receiving plate 20 of the vibration-proof support leg 10 or is set to be slightly lower than the upper surface of the receiving plate 20.

Next, the base panel P1 is attached to each of the anti-vibration support legs 1.
It is arranged so as to be placed on the receiving plate 20 of 0. In this arranging work, the base panel P1 located on the wall surface W side is placed on the receiving plate 20 in an inclined posture so that the end portion of the base panel P1 is lowered, and the base panel P1 is placed in a horizontal posture to set each corner. The base panel P1 can be placed on the receiving plate 20 located in the corresponding region. At this time, the upper surface of the receiving plate 20 and the mating surface of the base panel P1 are bonded to each other with an adhesive. Then, the finishing panel P2 is used as the base panel P.
By laying the baseboard 40 on the wall surface W and fixing the baseboard 40 to the wall surface W, the construction of the floor panel P can be completed.

FIGS. 5 and 6 show the experimental results after the floor panel construction when the silicon gel is used as the shock absorber 32, in the case where the conventional fixing joists are used and when the vibration-proof joists are used. It is shown in comparison with the case where it is adopted.
FIG. 7 shows the results of a heavy floor impact sound experiment when the silicon gel of the impact absorber 32 is replaced with rubber. As can be seen from these charts, it will be understood that the floor panel support structure according to the present invention is superior to the conventional examples, especially in the low frequency range. It is considered that this is because, as shown in FIG. 8, in the frequency range up to around 500 Hz, silicon gel and foamed silicon have a smaller vibration transmissibility than rubber.

In the above embodiment, the shock absorber 30 is used.
Has a support portion 35 connected to the fixed portion 34 and a side end shape of approximately L.
Although the bracket 31 having a letter shape is adopted, the present invention is not limited to this. For example, an appropriate reinforcing material may be provided between the fixed portion 34 and the support portion 35. As a result, the rigidity of the bracket 31 can be increased and excellent load bearing performance can be imparted.

Further, in the above embodiment, the vibration-proof support leg 10 is used.
Although the case where the vibration-proof elastic body 12 including the inner peripheral elastic portion 21 and the outer peripheral elastic portion 22 is applied has been illustrated and described, the present invention is not limited to this. For example, it is possible to use a general rubber having a simple disk shape. However, when the vibration-proof elastic body 12 having the configuration of the above-described embodiment is adopted, it is possible to obtain a vibration reduction effect superior to that of general rubber.

[0025]

As described above, according to the present invention,
A shock absorber is provided between the anti-vibration support legs located on the wall surface side, and the shock absorber is configured to include a shock absorber located between the anti-vibration support legs. Are absorbed by the shock absorber, and it is possible to effectively absorb the vibration energy and reduce the floor impact sound level. In addition, it is possible to prevent the floor panel from flexing between the vibration-proof support legs, and there is no fear that a clearance is created between the floor panel and the skirting board. Further, during the work of laying the floor panel, it is possible to prevent the anti-vibration support legs from falling down by using the shock absorber, and the floor panel construction work can be easily performed.

Further, when the shock absorber is made of a gel material made of silicon gel or styrene gel, or foamed silicon, the damping rate is relatively increased as compared with rubber, and the vibration absorption efficiency is further increased. Can be improved.

[Brief description of drawings]

FIG. 1 is a plan view of a double floor according to the present embodiment.

2 is an enlarged sectional view taken along the line AA of FIG.

FIG. 3 is an enlarged cross-sectional view of a main part of the embodiment.

FIG. 4 is a schematic perspective view of a main part of the embodiment.

FIG. 5 is a diagram showing a result of a light weight floor impact sound test according to the embodiment.

FIG. 6 is a diagram showing a result of a heavy floor impact sound experiment according to the example.

FIG. 7 is a diagram showing the results of a heavy floor impact sound experiment when silicon gel and rubber are used for the impact absorber.

FIG. 8 is a diagram showing a comparison of vibration transmissibility when silicon gel, foamed silicon, and rubber are used as shock absorbers.

[Explanation of symbols]

10 ... Anti-vibration support leg, 30 ... Shock absorber, 31 ... Bracket, 32 ... Shock absorber, 34 ... Fixed part, 35 ... Support part,
P ... Floor panel, S ... Slab, W ... Wall surface

Claims (4)

[Claims] 1. A structure for supporting a wall surface side of a floor panel arranged at a predetermined interval on a slab, wherein a plurality of anti-vibration elements arranged on a lower surface side of an end portion of the floor panel located on the wall surface side. A support leg and at least one shock absorber supporting the lower surface side of the floor panel between the anti-vibration support legs are provided, and the shock absorber is fixed to the wall surface side and supported along the lower surface portion of the floor panel. A floor panel support structure comprising a portion and a shock absorber provided between the support portion and the floor panel. 2. The floor panel support structure according to claim 1, wherein the shock absorber is made of a gel material made of silicon gel or styrene gel. 3. The floor panel support structure according to claim 1, wherein the shock absorber is made of foamed silicon. 4. A structure for supporting a wall surface side of a floor panel arranged at a predetermined interval on a slab, the pair of pair being arranged in a corner area of an end lower surface side of the floor panel located on the wall surface side. The anti-vibration support leg and a shock absorber located between the anti-vibration support legs are provided, and the shock absorber is fixed to the wall surface, and is connected to an upper end of the fixed part and is connected to a lower surface portion of the floor panel. And a shock absorber made of a gel material or foamed silicon, which is provided between the floor panel and the bracket provided on the upper surface side of the support portion. Characteristic floor panel support structure.