JP2001241179A - Floor edge joist structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a floor from going down and interrupt propagation of sound to the downstairs. SOLUTION: In the floor edge joist supporting a floor member 20 in a specified height from a floor foundation 10 such as a concrete slab or the like in the vicinity of a wall or at a door way, a buffer body 21 is installed between the floor joist 4 and the floor member 20 and a ventilation gap 21A is formed in the breadthwise direction orthogonal to the wall 11 side of the buffer body 21 or in the doorway. Further, a first gap is formed to have a specified distance between the end of a stacked body of the floor joist 4, the buffer body 21, and the floor member 20 and the wall 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor joist structure of a floor supporting a floor material constructed at a predetermined height from a floor base such as a concrete slab at a wall or an entrance.

[0002]

2. Description of the Related Art A conventional joist structure of a floor is shown in FIG.
As shown in FIGS. 18 to 18, floor base panels 2 each having a support leg 1 are laid on a floor base 10 in a room, and an edge joist structure is used only at entrances A and B of the room (FIGS. 16 and 1).
7), and a portion C near the wall other than the entrance is structured as shown in FIG. In this case, in the joist structure, a joist material 4 is provided on the bundle 3, a piling material 5 is provided on the joist material 4 and the floor base panel 2, and a finishing material 6 is provided on the piling material 5.
Was provided. In the structure shown in FIG. 18 that does not use the joist structure, the baseboard 7 is provided between the surface finish 11A of the wall 11 and the upper surface of the finish 6. When heavy furniture is placed on the baseboard 7, the floor may sink.
Therefore, as shown in FIG. 19, there is also known a structure employing a joisted structure all around the wall. In this example, the waste material 5
, The floor base panels 2 were laid without any space therebetween, and the finishing material 6 was provided directly on these floor base panels 2.

[0003]

In the conventional joist structure, impact on the floor is directly applied to the wall 11 through the bundle 3 and the joist material 4.
And the floor base 10 was not enough to prevent noise downstairs.

Accordingly, an object of the present invention is to provide a floor joist structure of a floor which can prevent sinking of the floor and block sound propagation downstairs.

[0005]

In order to achieve the above-mentioned object, the present invention relates to a floor joist of a floor supporting a floor material constructed at a predetermined height from a floor base such as a concrete slab at a wall or at an entrance. In the structure, a buffer is provided between the joist and the floor material, and the buffer is configured so as to form a space for air circulation in a width direction orthogonal to a wall or an entrance point of the buffer, A first gap at a predetermined interval is provided between an end portion of the laminated body of the buffer and the floor material and the wall.

[0006]

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

In the embodiment shown in FIG. 1, a floor material 20 constructed at a predetermined height from a floor base 10 such as a concrete slab is shown.
The joist structure is shown when supporting at the entrance. The entrance is provided with a threshold 8. The flooring material 20 is composed of the waste material 5 and the finishing material 6. Further, in order to construct the floor material 20 at a predetermined height from the floor base 10, a floor base panel 2 having a support leg 1 is provided. A bundle 3 is provided at the threshold 8
A joist 4 is provided between the bundles 3. Further, a buffer 21 is provided on the joist 4. The buffer 21 is provided at the entrance and exit of the buffer 21, ie, at the threshold 8.
A gap 21A for air circulation is formed in the width direction perpendicular to the direction of the arrow. These voids 21A are formed between the ribs 21B. The buffer 21 used here is made of JI having a rubber hardness of 70 °.
It is made of SA rubber. Overall thickness is 4mm
The width of the gap 21A was 3 mm, the height from the bottom of the gap 21A to the upper surface of the rib 21B was 3 mm, and the width of the rib 21B was 3 mm.

FIG. 2 shows a buffer 21 which may be used in place of the buffer 21 in FIG. This buffer 21 also forms a gap 21A for air circulation in the width direction.
A is formed at a valley between adjacent ridges 21C. That is, as shown in FIG. 2, a rubber material in which the surface of the buffer 21 is corrugated is used.

Further, the gap 21A is formed by the rib 2 shown in FIG.
1B or 21C as shown in FIG. 2, but also by forming a large number of disk-shaped ribs 21D.

Further, as shown in FIG. 4, the void 21A may be formed with a plurality of hollow portions penetrating in the width direction of the buffer 21, and the hollow portions may be used as the voids 21A.

FIG. 5 shows a state in which both sides of the buffer 21 shown in FIG. 4 are subjected to adhesive processing to form an adhesive surface 22, and the adhesive surface 22 is covered with a release paper 23. If the buffer 21 having both surfaces subjected to adhesive processing is used, the adhesive surface 22 on the lower surface is adhered to the upper surface of the joist 4 and the adhesive surface 22 on the upper surface of the buffer 21 is adhered to the lower surface of the scrap material 5. Stick. Of course, it is also possible to use an adhesive instead of such an adhesive surface 22. Furthermore, not only the buffer 21 having the structure shown in FIG. 4 but also the buffer 21 having the structure shown in FIG. 1 to FIG. The buffer 21 can be fixed to the member 4 and the floor member 20.

In the embodiment shown in FIG. 6, a plurality of cushions 2 are provided on a sheet 24 at a constant pitch along the longitudinal direction.
1 shows an example in which a member 1 is provided on a joist 4. The sheet 24 and the buffer 21 are integrated beforehand and provided on the joist 4. A gap 21 in the width direction formed between two adjacent buffer bodies 21
A corresponds to the gap 21A in FIG. A plurality of ribs 21E are formed in the buffer 21 along the longitudinal direction, and a groove 21F is formed between the ribs 21E. Therefore, in this embodiment, air can flow in the width direction and the longitudinal direction. As the sheet 24 used here, a nonwoven fabric, paper, a plastic soft sheet, or a thin rubber sheet can be suitably used. The buffer 21 is fixed to the sheet 24 using an adhesive or an adhesive.

FIG. 7 shows a floor structure using the buffer 21 and the sheet 24 shown in FIG.

FIG. 8 shows the joist structure near the wall 11.
Yes, the sheet 24 is arranged with the buffer 21 on the joist 4
This is an example. Moreover, the surface finishing material 11A of the wall 11
A baseboard 8 is provided between the floorboard 20 and the flooring material 20 (finishing material 6).
A second gap S at a predetermined interval between the wood 8 and the finishing material 6_TwoOpen
It is. Also, the wall 11, the joist 4, the sheet 24, the cushioning body
21, between the end of the laminated flooring 20 and the wall 11
First gap S at predetermined intervals ₁Has been opened. First gap S₁as well as
Second gap S_TwoWere both 2 mm. In this example
The combination of the sheet 24 and the buffer 21 was used.
However, the buffer 21 as shown in FIGS.
It can also be provided on top.

Next, in the embodiment shown in FIG. 1, an experiment on a heavy floor impact sound and an experiment on a light floor impact sound were conducted. The floor base 10 at this time is 210 mm as a concrete slab.
The thickness of the buffer 21 was compared with the one in which the buffer 21 was fixed to the joist 4 with screws and the one in which the buffer 21 was fixed with an adhesive. The comparison of the heavy floor impact sound at that time was as shown in the graph of FIG. In the graph, A indicates screw fixing, and B indicates adhesive fixing. FIG. 10 shows a comparison of lightweight floor impact sounds.

The graph shown in FIG. 11 is similar to the embodiment shown in FIG. 7 (indicated by reference numeral C), and shows a case in which the piling material 5 is directly provided on the joist 4 without using the buffer 21 and the sheet 24 (D). ) Is compared with the weight floor impact sound. Similarly, FIG. 12 is a graph comparing lightweight floor impact sounds. Both floor bases 10
Was a concrete slab having a thickness of 210 mm.

The graph shown in FIG. 13 shows that, in the embodiment shown in FIG. 8, the cushioning member 21 is provided on the joist material 4 without the sheet 24 in the longitudinal direction so as not to have the void 21A. 5 (indicated by reference numeral E), the one shown in FIG. 5 instead of the sheet 24 and the buffer 21 in FIG. 8 (indicated by reference numeral F), and the discarded material 5 is placed directly on the joist 4. (Shown by reference symbol G). This is also a comparison result of the heavy floor impact sound. FIG. 14 is a graph showing a similar comparison and comparing lightweight floor impact sounds. In both cases, the floor base 10 was a 210 mm thick concrete slab.

As the buffer 21, the above-mentioned JIS Class A rubber having a rubber hardness of 70 ° can be suitably used, but a molded product of a urethane material, a felt material or a nonwoven fabric having a low expansion ratio can also be used. Can be used.

[0019]

As described above, according to the present invention, a cushion is provided between a joist and a floor, and a gap for air circulation is provided in a width direction orthogonal to a wall or an entrance of the cushion. Configure the buffer to form a joist, buffer,
A first space having a predetermined distance between an end of a laminate of floor materials and a wall.
Since the gap is provided, it is possible to prevent the air trapped under the floor from becoming a medium of sound propagation downstairs when a heavy impact is applied to the floor. Also, the presence of the buffer can prevent sound from propagating downstairs through the joist structure. Further, between the joist material and the floor material, a structure in which a plurality of shock absorbers are arranged at a constant pitch along the longitudinal direction on the sheet is provided, and the joist material, the sheet, the shock absorber, and the floor material are laminated. If there is a predetermined gap between the end and the wall, the cushion is fixed to the sheet in advance at a fixed interval, so that it is easy to mount it on the joist, and a plurality of cushions are installed on site. The construction efficiency is improved as compared with the case where is attached to the joist at predetermined intervals. Furthermore, the floor impact sound blocking performance is improved by fixing the cushioning body with an adhesive or a sticking process, rather than fixing the cushioning body on the joist material with screws. Furthermore, by using the joist structure, the sinking of the floor can be prevented, and the sound insulation performance can be improved.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing a preferred embodiment of the present invention.

FIG. 2 is a perspective view showing another example of a buffer.

FIG. 3 is a perspective view showing still another example of the buffer.

FIG. 4 is a perspective view showing another example of the buffer.

FIG. 5 is a perspective view showing an example in which both sides of the shock absorber of FIG. 4 are subjected to adhesive processing.

FIG. 6 is a perspective view showing an example in which a buffer is used together with a sheet.

FIG. 7 is a sectional view of a floor structure using the one shown in FIG. 6;

FIG. 8 is a partially broken perspective view showing another example.

FIG. 9 is a graph showing a comparison result of heavy floor impact sound comparing the embodiment shown in FIG. 1 with the one not using the shock absorber shown in FIG. 1;

FIG. 10 is a comparative graph of a lightweight floor impact sound similar to FIG. 9;

FIG. 11 is a comparison graph of heavy floor impact sound comparing the embodiment shown in FIG. 7 with the one shown in FIG. 7 which does not use the seat and the buffer.

FIG. 12 is a comparative graph of a lightweight floor impact sound similar to FIG. 11;

FIG. 13 shows the embodiment shown in FIG. 8 in which a buffer is connected without providing a gap in the width direction on the way, the buffer is not used, and the buffer shown in FIG. 5 is used. 7 is a comparison graph of a heavy floor impact sound in comparison with an object.

FIG. 14 is a comparative graph of a lightweight floor impact sound similar to FIG.

FIG. 15 is a plan view showing a conventional example.

FIG. 16 is a schematic cross-sectional view at a location A in FIG.

FIG. 17 is a schematic cross-sectional view taken at a position B in FIG. 15;

FIG. 18 is a schematic cross-sectional view taken along a line C in FIG.

FIG. 19 is a simplified cross-sectional view showing an example in which a large joist structure is applied at the place shown in FIG. 18;

[Explanation of symbols]

1 supporting leg 2 underfloor panel 3 bundle 4 joists member 5捨張member 6 finish 10 bed base 11 wall 11A surface coverings 20 Flooring 21 cushion 21A gap 24 sheet S ₁ first gap for air circulation

Claims (7)

[Claims] 1. A joist structure for a floor supporting a floor material constructed at a predetermined height from a floor base such as a concrete slab at a wall or at an entrance / exit point, wherein a buffer is provided between the joist material and the floor material. A buffer is formed so as to form a space for air circulation in a width direction orthogonal to a wall or an entrance / exit portion of the buffer, and a gap is formed between an end of the laminated joist, the buffer, and the floor and the wall. A floor joist structure for a floor, characterized by having a first gap at a predetermined interval. 2. In a joist structure of a floor supporting a floor material constructed at a predetermined height from a floor base such as a concrete slab at a wall or at an entrance / exit point, a sheet material is provided between the joist material and the floor material on a sheet. A structure in which a plurality of shock absorbers are arranged at a constant pitch along the longitudinal direction is provided, and that a predetermined interval is provided between an end portion and a wall of a stack of joists, sheets, shock absorbers, and flooring materials. The characteristic joist structure of the floor. 3. The air gap of the shock absorber is formed by forming a hollow portion in the shock absorber on one surface, or providing a plurality of ribs on one surface, and further forming a mountain portion. Item 4. The floor joist structure of the floor according to Item 1. 4. The floor joist structure of a floor according to claim 1, wherein both sides of the buffer are fixed to the joist material and the floor material with an adhesive or a sticky material. 5. The floor joist structure of a floor according to claim 1, wherein both sides of the buffer are subjected to adhesive processing. 6. The floor joist structure of a floor according to claim 2, wherein both sides of the sheet are subjected to adhesive processing. 7. A skirting board is provided between a wall surface finishing material and a flooring material, and a second gap at a predetermined interval is provided between the skirting board and the flooring material. The floor joist structure of a floor according to any one of the above.