JPH0332673Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a floating floor structure for reducing the propagation of floor impact noise such as the sound of jumping and walking on the upper floors to the lower floors in medium-to-high-rise residential buildings. It is about improvement.

(Prior art) Conventionally, as a technology to prevent the propagation of floor impact noise in mid-to-high-rise housing, etc. as mentioned above, glass wool mats are laid on the subfloor of concrete floor slabs, etc., and plywood or particle board, etc. are placed on top of the glass wool mats. The structure of a floating floor with rigid plates is widely known. This floating floor structure utilizes the elasticity and restorability of glass wool mats to reduce the impact force exerted on the rigid plate material on the surface due to floor impact, and to reduce the propagation of impact force to concrete floor slabs and the like.

(Problem that the invention aims to solve) However, in the case of the above-mentioned conventional floating floor structure, the concrete floor slab continues to gradually release moisture even after construction, and this moisture tends to reduce the resilience of the glass wool pine. The problem is that in rooms with poor sunlight conditions, moisture accumulates under the floor, making it impossible to maintain good cushioning performance.

On the other hand, as a floor panel for use in such a floating floor structure, one in which a rigid board such as plywood or particle board is bonded to the surface of a glass wool mat has been proposed (see Japanese Utility Model Publication No. 4669/1983).
However, since plywood, particle board, hard fiberboard such as hardboard is hard and has poor elasticity, sufficient resilience cannot be achieved unless it is combined with thick glass wool mat. , resulting in an increase in panel thickness. Moreover, since the hard board material has low hygroscopicity, it has the disadvantage that the moisture under the floor gets trapped inside the glass wool mat, reducing its restorability, similar to the case with the above-mentioned conventional rigid board material.

On the other hand, wood fiberboards such as insulation boards are known as cushioning materials having humidity control properties. Therefore, it is conceivable to use this wood fiberboard in place of the glass wool mat in the conventional floating floor structure, but wood fiberboards such as insulation boards have a larger static spring constant than glass wool mats and deform. Also, since the fiber length is shorter than that of glass wool mat, if the specific gravity is lowered to make it more likely to cause compression deformation, the strength will decrease and the restoring force will be small, and it will not be possible to obtain a restoring force equivalent to that of glass wool mat. Therefore, similarly good buffering performance cannot be ensured.

This invention was made in consideration of these points,
The purpose of this is to compensate for the shortcomings of both by using the above-mentioned insulation board with humidity control performance in combination with glass wool mats laid on the subfloor made of concrete, etc., to prevent moisture under the floor. To provide a floating floor structure that can ensure good buffering performance even when the floor is in use, thereby effectively reducing the propagation of floor impact noise.

(Means for solving the problem) In order to achieve the above object, the solution of the present invention is to lay a glass wool mat on the subfloor made of concrete etc. An insulation board with a specific gravity of 0.2 to 0.4 that has excellent moisture dissipation and appropriate cushioning properties is installed. A rigid plate is stretched over the upper surface of the insulation board, and a floor finishing material is provided on top of the rigid plate to form a floating floor structure.

(Function) With the above configuration, the present invention allows the glass wool mat laid on the floor to absorb the unevenness of the floor base due to its excellent elasticity and resilience, while the insulator with a specific gravity of 0.2 to 0.4 placed on top of it absorbs the unevenness of the floor base. Combined with the resilience of the rayon board, the cushioning performance is significantly improved.
The impact force applied to the planks on the floor surface (floor finishing materials and rigid boards) is well absorbed and alleviated, and the propagation of floor impact sound downstairs is significantly reduced. In other words, the cushioning effect of the glass wool mat acts primarily against light impacts, while the cushioning effects of both the glass wool mat and the insulation board work against heavy impacts, absorbing the impact force. It is. In that case, for moisture coming from the subfloor,
This moisture is well absorbed by the insulation board and the glass wool mat does not become too humid, so the resilience of the glass wool mat, that is, the buffering performance is well and effectively exhibited for a long period of time, and the floor The effect of reducing impact noise is maintained well.

Here, a laminated panel is constructed by laminating and integrating the glass wool mat and the insulation board by partially adhering or sewing, and a plurality of the laminated panels are placed on the floor subfloor with the glass wool mat side facing downward. It is preferable to install the insulation board because it ensures that the moisture under the floor is well absorbed by the insulation board through the glass wool mat, and improves the ease of construction and handling. Furthermore, by laying the above-mentioned adjacent laminated panels with a space between their side edges, moisture in the underfloor space is actively absorbed from the end surface of the insulation board, which tends to absorb moisture, and the glass wool mat It is possible to prevent high humidity and improve moisture absorption performance, and also to prevent floor impact from propagating between adjacent laminated panels in the space, which is effective in alleviating floor impact. This is suitable because it can be used as a space for piping and wiring.

Next, determine the specific gravity of the above insulation board.
The reason for limiting it to 0.2 to 0.4 will be explained. In general, board materials made by bonding wood fibers have a wide range of specific gravity depending on the degree of compression, and the properties of the board also vary depending on the specific gravity.
If you simply want to increase the absorption of impact force, you can use a lightweight wood fiberboard with a sparse fiber density, but wood fiberboard with a specific gravity of less than 0.2 will cause deformation such as dents and bending due to impact force. , the floor surface becomes unstable, and the impact force tends to act locally without being dispersed to the glass wool mat located below due to local depressions or bending. Therefore,
In order to stabilize the floor surface and distribute the impact force to the glass wool mat, it is necessary to select a material with a specific gravity of 0.2 or higher. On the other hand, fiberboard with a high specific gravity and hardness provides a stable floor surface, but it does not have the ability to absorb moisture that has entered the glass wool mat, so over a long period of time, the glass wool mat will absorb moisture and lose its resilience. In addition to this, there is a problem that the humidity inside the glass wool mat is increasing and condensation is likely to occur under the floor. Furthermore, if the specific gravity exceeds 0.4, the board will become hard and will not have the ability to absorb impact force, making it necessary to use thick glass wool mats, which will increase the thickness of the underfloor. Therefore, the specific gravity of the fiberboard is such that it is relatively flexible, and also has moisture absorbing and desorbing properties to absorb moisture from the glass wool mat when the glass wool mat is humid.
It is necessary to select one with a value of 0.4 or less. Then,
The specific gravity of the insulation board is set to 0.2 to 0.4.

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

FIG. 1 shows a floating floor structure according to a basic embodiment of the present invention. In the figure, reference numeral 1 denotes a floor base made of concrete or the like, and a glass wool mat 2 is disposed on the floor base 1, and on the glass wool mat 2 there is an absorbent/release material mainly made of wood fibers. An insulation board 3 having moisture and a specific gravity of 0.2 to 0.4 is provided. Further, a rigid board 4 such as particle board or plywood is stretched on the upper surface of the insulation board 3, and a floor finishing material 5 is arranged on the rigid board 4 to provide a floating floor. structure is constructed.
Incidentally, as the floor finishing material 5, a wooden flooring material, a carpet, etc. are used as appropriate depending on the purpose of the room.

The floating floor structure constructed in this way has excellent elasticity and
Since it has resilience, it is possible to absorb the unevenness even if the subfloor 1 is significantly uneven and can be used for construction. Combined with a certain degree of resilience, the cushioning performance is significantly improved, and the floor impact force applied to the floor surface board (rigid board 4 and floor finishing material 5) is well absorbed and alleviated, reducing floor impact noise. It is possible to reduce and prevent the spread of the problem to the lower floors, etc.

Moreover, the moisture released from the flooring 1 is well absorbed by the insulation board 3 which has moisture absorbing and desorbing properties through the glass wool mat 2, so that moisture does not accumulate inside the glass wool mat 2. The glass wool mat 2 does not become humid. As a result, the good restorability of the glass wool mat 2 is stably exhibited over a long period of time, and the effect of reducing floor impact noise can be maintained effectively and favorably.

2 and 3 show other embodiments of the invention. In this example, a laminated panel 6 in which a glass wool mat 2 and an insulation board 3 are partially bonded and integrated is used, and a plurality of laminated panels 6 are placed on the floor base 1 with adjacent panels 6, A certain space 7 is provided between the side end surfaces of the glass wool mats 3, and the glass wool mats 2 are laid down with the 2 sides facing downward, and the rigid plates 4 are placed on top of the glass wool mats 2.
The laminated panels 6, 6... are arranged so that their upper surfaces are connected and fixed with an adhesive or the like. Incidentally, the interval between the spaces 7 is about 1 to the thickness of the laminated panel 6.
It is set to 5 times.

Here, the glass wool mat 2 and the insulation board 3 in the laminated panel 6 are bonded by applying adhesive in lines, dots, and other parts. Moisture is allowed to circulate at the joint surface with the rayon board 3. Also, instead of this adhesive, adhesive tape or the like may be used.
In this case, it is preferable to use an adhesive tape having rubber-based elasticity because it can be integrated without reducing the restoring force of the whole. Alternatively, both may be sewn together with thread.

Therefore, in this example, glass wool mat 2
Since the laminated panel 6 is constructed by laminating and integrating the insulation board 3 and the insulation board 3 by partially adhering or sewing, moisture from the flooring 1 passes through the glass wool mat 2 and reaches the insulation board 3. While ensuring that moisture is absorbed by the product, it is easy to handle during construction and transportation, and is easy to work with during construction.

Further, the space 7 does not necessarily need to be provided and may be provided with an end face but this space 7
Due to the presence of glass wool mats 2, it is possible to actively absorb moisture in the space under the floor even from the end surface of the insulation board 3, which easily absorbs moisture.
The moisture inside can be removed more smoothly. Moreover, when an impact is applied to the laminated panel 6, this space 7 prevents the impact from propagating to the adjacent laminated panel 6, and is effective in alleviating the impact. According to impact tests, compared to the case of thrust construction,
It can be reduced by ~3dB. Furthermore, this space 7 can advantageously be used as a space for piping and wiring.

In FIG. 2, reference numeral 4' denotes a rigid plate made of plywood or the like, which is placed on the rigid plate 4 at different joint positions, and is superimposed on the surface of the rigid plate 4 by nailing. It is fixed. This rigid plate 4,
The double structure of 4' prevents the joints of the rigid plates 4 from appearing on the surface of the floor finishing material when only a soft flooring material such as a carpet 5' is installed as the floor finishing material. Further, reference numeral 8 denotes a joist made of wood arranged on the flooring 1 near the wall, and cushioning materials 8a, 8a made of rubber, fiberboard, foam, etc. are provided on the upper and lower surfaces of the joist 8. It is designed to reduce the impact transmitted from the joists 8.

Further, the laminated panel 6 may be provided with slits 9, holes 10, etc. that pass through the upper and lower surfaces of the insulation board 3, as shown in FIGS. 4 and 5. In this case, glass wool mat 2
There is an advantage that the moisture that has entered inside is actively absorbed from the end of the soft fiberboard exposed on the inner surface of the slits 9 and holes 10, making it possible to remove moisture from the glass wool mat 2 even more smoothly. .

Furthermore, a moisture-proof sheet 11 may be placed between the glass wool mat 2 and the floor base 1 to prevent moisture from the floor base 1 from coming into direct contact with the glass wool mat 2. In this case, there is an advantage that the glass wool is prevented from being affected by the alkaline components of the concrete slab, and the restoring power of the glass wool mat 2 can be maintained for a longer period of time.

(Effects of the invention) As explained above, according to the floating floor structure of the invention, the glass wool mat laid on the subfloor has moisture absorbing and releasing properties, and has a specific gravity of 0.2 to 0.4, which has cushioning properties and restoring properties. Insulation boards are arranged to absorb moisture from the subfloor and prevent the glass wool mat from becoming too humid, so the resilience of the glass wool mat can be maintained for a long period of time. It is possible to maintain the impact performance and effectively maintain the effect of reducing floor impact noise.

In addition, by constructing a laminated panel in which the above-mentioned glass wool mat and insulation board are laminated and integrated by partially adhering or sewing, construction ease and handling are improved while ensuring the moisture absorption function of the insulation board. It is possible to improve sexual performance, etc. Furthermore, if a space is provided between adjacent laminated panels, moisture can be absorbed from the end surface of the insulation board, improving moisture absorption performance and preventing the propagation of floor impact to adjacent laminated panels. It has the advantage of being able to prevent damage and increase the buffering effect, and can also be used as space for piping and wiring.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention, with FIG. 1 being a sectional view of one embodiment, and FIGS. 2 and 3 showing other embodiments, FIG. 2 being a sectional view, and FIG. is a schematic plan view. FIGS. 4 and 5 are perspective views showing modified examples of the laminated panel, respectively. 1... Floor base, 2... Glass wool mat, 3... Insulation board, 4, 4'... Rigid board, 5,
5'...Floor finishing material, 6...Laminated panel, 7...Space part.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Glass wool mats are laid on a subfloor made of concrete, etc., and a specific gravity of 0.2 which has moisture absorbing and releasing properties is formed mainly of wood fibers.
A floating floor structure in which an insulation board of ~0.4 is installed, a rigid board is stretched over the upper surface of the insulation board, and a floor finishing material is placed on top of the rigid board. (2) Glass wool mats and insulation boards are composed of laminated panels that are laminated and integrated by partial adhesion or sewing, and multiple laminated panels are placed on the subfloor with the glass wool mat side facing downwards. Floating floor structure as set forth in claim (1) of the utility model registration, which is installed in the following manner. (3) The floating floor structure according to claim (2) of the utility model registration, wherein adjacent laminated panels are laid with a space provided between their side end surfaces.