JPH03235849A - Soundproof floor structure - Google Patents

Abstract

PURPOSE:To prevent an additional mass from dropping by removably mounting a hanging fixture to the bottom surface of a floor base board, mounting a spring member to the hanging fixture, placing the additional mass on the spring member and mounting it so as to be distorted in a compression direction. CONSTITUTION:A finish material 2 is directly pasted to a floor base board 1 of concrete slab, light weight concrete panel or PC plate, etc. Next a bolt 5 is inserted into an insertion hole 4 by forming a recessed part 3 in an upper surface of the floor base board 1 and the insertion hole 4 in its lower surface from the recessed part 3. Then a washer 7 and a nut 8 are mounted on a side of the recessed part 3 of the bolt 5 by removably mounting a hanging fixture 6 to the lower surface of the floor base board 1 by a bolt head 5A of the bolt 5. A spring member 9, on which an additional mass 10 is placed, is adhesively mounted on the hanging fixture 6 so that the spring member 9 is distorted in the compression direction. The additional mass is prevented from dropping by exfoliation of adhesion generated from a change of physical properties.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a soundproof floor structure designed to prevent floor impact noise.

[Conventional technology]

Conventionally, as shown in FIG. 8, a support leg 100 is provided on a floor base l such as a concrete slab, and this support leg 100 is used to prevent floor impact noise.
6 and finishing material 102, an underfloor space is set, and an additional mass 104 is placed on a spring material 103 provided on the floor base 1 in this underfloor space, so as to function as a dynamic damper. Are known. As shown in Fig. 8, if a space can be set up under the floor, a dynamic damper can be installed in the underfloor space, but the floor base 1
Direct finishing materials (directly applied wood finishing materials and carpella)) 102
9th floor space is not provided under the floor space.
As shown in the figure, a spring material 103 may be bonded to the lower surface of the floor base 1, and an additional mass 104 may be bonded to this spring material 103.

[Problem to be solved]

When installing finishing material directly on the floor base, if the spring material is bonded directly to the underside of the floor base and the additional mass is bonded to the spring material, separation will occur at each bonded location, leading to the additional mass falling. There was a risk.

SUMMARY OF THE INVENTION An object of the present invention is to provide a soundproof floor structure that prevents floor impact noise by providing a dynamic damper on the lower surface of the floor base and prevents additional mass from falling even when an underfloor space cannot be formed. .

[A means of promise to solve problems]

In order to achieve the above-mentioned object, this invention attaches a removable hanging tool to the underside of a floor base such as a concrete slab, attaches a spring material to this hanging tool, and places an additional mass on this spring material to create a spring. It is installed so that the material is distorted in the direction of compression.

[Effect]

In this invention, since the additional mass is mounted so that the spring material is distorted in the compression direction, the additional mass does not fall due to adhesive peeling that occurs due to changes in physical properties due to long-term use. Also, when floor impact noise occurs, it is effective over a wide range of frequencies.

Furthermore, the hanging tools are removable from the floor base, so when problems arise due to changes in physical properties due to long-term use,
The dynamic damper itself can be easily replaced.

[Embodiments] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

In the first embodiment shown in FIG. 1, a finishing material 2 is directly attached to a floor base 1 such as a concrete slab, lightweight concrete panel, or PC board. A recess 3 is formed in the upper surface of the floor base 1, and an insertion hole 4 is formed in the lower surface of the floor base 1 from the recess 3, and a bolt 5 is inserted into the insertion hole 4. A hanging tool 6 is removably attached to the lower surface of the floor base 1 using the bolt head 5A of this bolt 5. A washer 7 and a bolt 8 are attached to the recess 3 side of the bolt 5. A spring member 9 is attached to the hanging tool 6, and an additional mass 10 is placed on the spring member 9 so that the spring member 9 is distorted in the compression direction. It is preferable that the hanging tool 6 and the spring material 9 are not bonded together when the hanging tool 6 is attached to the lower surface of the floor base 1, but are integrated into the hanging tool 6 in advance. When using a rubber-like elastic body as the spring material 9, the reliability of adhesion is improved by using metal for the hanger 6 and performing vulcanization adhesion.

FIG. 2 shows an anchor bolt 11 embedded in the floor base 1 in place of the bolt 5 in advance, and the anchor bolt 11 attached to the floor base 1.
A washer 7 and a nut 8 are attached to the threaded portion protruding downward from the hanger 6 so as to sandwich the hanger 6 therebetween. In FIG. 3, a female threaded member 12 is inserted into the floor base 1 in advance, a bolt 5 is screwed into the female threaded member 12, and the hanging tool 6 is inserted between the bolt heads 5A and attached.

In the second embodiment shown in FIG. 4, the shape of the hanging tool 6 is changed. A spring material 9 is attached to the bottom of the box-shaped hanging tool 6, and an additional mass 10 is placed on the spring material 9. is installed.

In the third embodiment shown in FIG. 5, a hanger 6 and a bolt 5 are integrated. It is fixed with a washer 7 and a nut 8 at the point. Washers 7' and nuts 8' similar to these washers 7 and 8
The bolts 5 are provided so as to abut against the lower surface of the floor base 1. This hanging tool 6 and bolt 5 are integrally formed.
It is formed as shown in the figure, and a spring member 9 and an additional mass 10 are inserted into the bolt 5.

In the fourth embodiment shown in FIG. 7, a hanging tool 6 is removably attached to the lower surface of the floor base 1 with bolts 5 in the same way as in the first embodiment, and a spring material 9 is provided on this hanging tool 6. An additional mass support member 13 is attached so as to suppress the material 9 from above, and an additional mass 10 is attached to this additional mass support member 13. In this embodiment, the hanging tool 6 and the additional mass 10 can be attached separately, resulting in improved workability.

〔effect〕

As explained above, according to the present invention, a removable hanging tool is attached to the lower surface of a floor base, a spring material is attached to this hanging tool, an additional mass is placed on this spring material, and the spring material is moved in the compression direction. Since it is installed so as to be distorted, it is possible to prevent the additional mass from falling due to adhesive peeling that occurs due to changes in physical properties due to long-term use, and a safe soundproof floor structure can be provided. Also,
Since the hanging tool is removable from the bottom surface of the floor base, the dynamic damper can be easily replaced.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of the present invention, FIGS. 2 and 3 are cross-sectional views showing another example of means for detachably attaching a hanging tool to a floor base, and FIG. A cross-sectional view showing the second embodiment, FIG. 5 a cross-sectional view showing the third embodiment, and FIG. 6 showing an integrated hanging tool and bolt used in FIG. 5, a spring material, and an additional mass. An exploded perspective view, FIG. 7 is a sectional view showing the fourth embodiment, FIG. 8 is a sectional view showing a conventional example, and FIG. 9 is a sectional view showing a means for installing a dynamic damper on a floor base to which finishing material is directly applied. It is a diagram. DESCRIPTION OF SYMBOLS 1... Floor base, 6... Hanging tool, 9... Spring material, 10... Additional mass.

Claims (1)

[Claims] 1. A removable hanging device is attached to the underside of a floor base such as a concrete slab, a spring material is attached to this hanging device, and an additional mass is placed on this spring material so that the spring material moves in the compression direction. A soundproof floor structure characterized by being installed so that it distorts.