JP2582974B2 - Sound insulation floor structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound insulation for supporting a floor material at an appropriate height via a height-adjustable support on a floor base such as a concrete slab of an apartment house, a general house, and various other buildings. The present invention relates to a sound-insulating floor structure of a low-floor type, in which the floor height is limited in order to effectively use a space on the floor, etc.

[0002]

2. Description of the Related Art Hitherto, a floor base structure has been proposed as a low-floor type sound insulation floor structure of this type, for example, in Japanese Utility Model Publication No. 63-6356. In this floor base structure, a flanged bowl-shaped support fitting is fitted upside down in a support hole of the floor material, the upper end of the support bolt is inserted into the support fitting, the support fitting is supported, and the support bolt is mounted on the floor base. A screw fitting is screwed in order to provide the vibration-proof rubber provided in the support bracket, and the height of the floor material is adjusted by rotating the support bolt to move the vibration-proof rubber into and out of the bowl-shaped portion of the support fitting.

Further, Japanese Utility Model Laid-Open No. 2-149046 proposes a dry floor-standing structure. In this dry floor placement structure, a concave portion is provided on the lower surface of the floor material, a receiving nut is fitted and fixed in a support hole provided in the concave portion, and an upper end portion of a supporting bolt is screwed into the receiving nut, and the supporting bolt is provided. The lower end is embedded in an anti-vibration rubber pedestal provided on the floor base, and the height of the floor material is adjusted by rotating the support bolt so that the anti-vibration rubber pedestal can enter the recessed portion on the lower surface of the floor material. It has been made like that.

[0004]

However, in the case of the former floor foundation structure, since the support bolt supporting the flanged bowl-shaped support metal at the upper end is screwed with the screw metal to provide the vibration-proof rubber. However, only the height of the floor material can be adjusted corresponding to the vertical movement of the support bolt, and the range of irregularity adjustment is small (for example, about 15 mm). Must be replaced, which is inconvenient. Further, the rubber rubber on the floor base is also formed in a cylindrical shape having relatively good sound insulation performance, but there is a problem that the sound insulation performance is still insufficient because it is a cylindrical body.

[0005] In the case of the latter dry-type floor-standing structure, since the support bolt is screwed into the receiving nut fixed in the recessed portion of the floor material, it corresponds to the vertical movement of the support bolt as in the former case. There is a problem that only the height of the flooring material can be adjusted, the range of unevenness adjustment is small, and it is difficult to cope with the site where the unevenness is severe. Further, since the vibration-isolating rubber pedestal on the floor base is a thin and small cap-shaped member that covers the lower end portion of the support bolt, there is a problem that the sound insulation performance is poor.

[0006] It is an object of the present invention to provide a sound insulation floor structure which solves the conventional problems.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an upper female screw member which is fitted and fixed to a floor material and has a cylinder having a size such that a vibration isolating member on a floor base can enter therein. The screwing of the substantially disk-shaped head of the support bolt and the upper female screw member, and the screwing of the shaft portion of the support bolt and the lower female screw member provided on the vibration isolation member are screwed in opposite directions. The height adjustment range of the floor material by the rotation of the support bolt is enlarged. Further, the vibration isolator has a double rubber structure to improve the sound insulation performance.

That is, in the sound insulation floor structure of the present invention, a floor material is supported at an appropriate height on a floor base via a support.
The support is an upper screw member for supporting the floor material, which is fitted and fixed in a support hole of the floor material, a support bolt having a substantially disk-shaped head screwed into the upper screw member, and a shaft portion of the support bolt. And a cylindrical anti-vibration member installed on the floor base and supporting the lower female screw member with its center axis aligned, and the upper female screw member is internally The member has a cylindrical shape large enough to enter, the head of the support bolt and the upper female screw member,
The screw portion of the shaft portion of the support bolt and the lower female screw member are in opposite directions to each other, and the rotation of the support bolt advances and retreats the anti-vibration member into the upper female screw member to adjust the height of the floor material. is there.

Further, the vibration damping member has a double structure in which an outer rubber material is coated on the outer periphery of a cylindrical inner rubber material, and the inner rubber material has a softer rubber hardness than the outer rubber material.

[0010]

When the support bolt is rotated, the floor material is formed by both the screwing of the substantially disk-shaped head of the support bolt and the upper female screw member and the screwing of the shaft of the support bolt and the lower female screw member. Is moved up and down, the vibration damping member moves into or out of the upper female screw member, and the height of the floor material is adjusted.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes a floor base such as a concrete slab, on which a floor material 2 as a base plate such as a particle board is supported at an appropriate height via a plurality of supports 3. I have.

The support 3 includes an upper female screw member 4 fixed to the floor material 2, a support bolt 5 having a head portion 51 screwed to the upper female screw member 4, and a shaft portion 52 of the support bolt 5. The lower female screw member 6 and the vibration isolating member 7 installed on the floor base 1 and supporting the lower female screw member 6 are formed.

As shown in FIG. 3, the upper female screw member 4 is formed in a cylindrical shape having a flange-shaped receiving portion 41 on the outer periphery of the lower end portion. 42 are protruded. The upper female screw member 4 is formed in a cylindrical shape large enough to allow the vibration isolating member 7 to enter therein as shown in FIG. The upper female screw member 4 is fitted into a support hole 21 formed in the floor member 2, and the receiving portion 41 is connected to the floor member 2.
Is fixed in contact with the lower surface. Further, it is preferable that the upper female screw member 4 is made of a composite material of a polyamide resin and glass fiber in terms of strength, vibration isolation, and the like.

As shown in FIG. 3, the support bolt 5 has a substantially disk-shaped head 5.
1 and a reverse screw (for example, 1 to 1.5
mm screw is provided and screwed to the upper female screw member 4, and the shaft portion 52 is provided with a forward screw (for example, a screw of 1.5 to 3 mm pitch) and screwed to the lower female screw member 6. I have. The substantially disk-shaped head portion 51 is formed such that a member different from the metal support bolt 5 is non-rotatably integrated with the upper end of the support bolt 5. It is preferable that the substantially disk-shaped head 51 is made of the same composite material of a polyamide-based resin and glass fiber as the upper female screw member 4 in terms of strength, vibration isolation and the like.
In addition, a concave portion 53 for rotating the support bolt 5 is provided on the upper surface of the support bolt 5, so that a driver for the rotational operation, a hexagonal bar, or the like can be engaged.

The lower female screw member 6 has a flange 61 on the outer periphery of the lower end.
And a shaft portion 52 of the support bolt 5 therein.
And a forward thread that is screwed into the thread. As shown in FIG. 1, the lower female screw member 6 is supported by the vibration isolating member 7 with the flange 61 wrapped in the vibration isolating member 7, the central axes thereof are aligned with each other, and the cylindrical portion is projected above the vibration isolating member 7. ing.

The vibration isolating member 7 is a rubber pedestal supporting the lower female screw member 6, and is installed on the floor base 1. When the center axis of the anti-vibration member 7 is aligned with that of the lower female screw member 6, the shaft portion 52 of the support bolt 5 can advance and retreat into the anti-vibration member 7 via the lower female screw member 6. I have. The vibration isolating member 7 may be a cylindrical pedestal made of a single vibration isolating rubber, but usually has a double structure in which an outer rubber material 72 is coated on the outer periphery of a cylindrical internal rubber material 71 as shown in FIG.

In the case of this double structure, the inner rubber member 71 has a rubber hardness softer than that of the outer rubber member 72, so that the sound insulation performance is improved as compared with the case of a single vibration-isolating rubber. 7 to reduce the deflection and maintain stability. In general, it is preferable that the rubber hardness of the internal rubber material 71 is about 40 to 60 degrees and the rubber hardness of the external rubber material 72 is about 60 to 80 degrees because sound insulation and stability are improved. The internal rubber member 71 is preferably formed in a vertical cylindrical shape having a height of about 20 mm from the viewpoint of sound insulation and stability. The inner rubber material 71 is provided with concentric ridges on the upper and lower surfaces and grooves in the upper and lower directions on the outer peripheral surface as appropriate to improve the vibration isolation effect.

The height of the floor material 2 supported on the floor base 1 via the support 3 is adjusted by rotating a support bolt 5 of the support 3.

For example, FIG. 1 shows a state in which the flooring material 2 is supported at the lowest position. In this case, the substantially disk-shaped head 51 of the support bolt 5 is screwed to the upper end of the upper female screw member 4, and the shaft portion 52 of the support bolt 5 is inserted into the vibration isolating member 7 via the lower female screw member 6. It has been entered. When the support bolt 5 is rotated from this state, the support bolt 5 is gradually raised by the screwing of the shaft portion 52 and the lower female screw member 6. At the same time, the upper female screw member 4 gradually rises due to the screwing of the head portion 51 and the upper female screw member 4, and the vibration isolating member 7 is withdrawn from the upper female screw member 4, and the height of the floor material 2 is reduced. It gradually increases. Finally, the flooring material 2 is supported at the highest position as shown in FIG.

FIG. 4 shows a placing floor in which flooring materials 2 having supports 3 are laid on a floor base 1, and a floor finishing material 8 such as a lower bonded plywood or a wooden floorboard is placed on the flooring material 2. Is placed.

[0021]

As described above in detail, in the sound insulation floor structure of the present invention, the upper female screw member fixed to the floor material is formed in a cylindrical shape having a size into which the vibration isolating member can enter. The screw connection between the plate-shaped head and the upper female screw member, the shaft of the support bolt and the lower female screw member provided on the vibration isolator is made in the opposite direction, and the rotation of the support bolt causes the vibration isolator to move inside the upper female screw member. The height of the floor material is adjusted by moving back and forth, so that the floor height can be reduced and the adjustment range can be increased. Therefore, it is possible to adjust the terrain even at the site where the terrain is severe and can easily cope with it.

Further, since the vibration damping member has a double structure in which the outer rubber material is coated on the outer periphery of the cylindrical inner rubber material, the inner rubber material has a softer rubber hardness than the outer rubber material.
It is possible to reduce the deflection of the vibration isolating member, maintain the stability, and improve the sound insulation performance.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one embodiment of the sound insulation floor structure of the present invention, showing a state where the floor height is the lowest.

FIG. 2 is a sectional view showing one embodiment of the sound insulation floor structure of the present invention, showing a state where the floor height is the highest.

FIG. 3 is a partially exploded perspective view showing an example of a support in the sound insulation floor structure of the present invention.

FIG. 4 is a partially cutaway front view showing a floor having the sound insulation floor structure of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor base 2 Floor material 21 Support hole 3 Support 4 Upper female screw member 5 Support bolt 51 Substantially disk-shaped head 52 Shaft 6 Lower female screw member 7 Vibration-proof member 71 Internal rubber material 72 External rubber material

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Teruo Nakagami 2-3-9 Andodoji-cho, Chuo-ku, Osaka-shi, Osaka (72) Inventor Kensaburo Hashimoto 4-7-12 Nozaki, Daito-shi, Osaka Examiner Hidehiro Sumita

Claims (2)

(57) [Claims] 1. A floor material is supported at an appropriate height on a floor base via a support, and the support is a female screw member for supporting a floor material, which is fitted and fixed in a support hole of the floor material. And a support bolt having a substantially disk-shaped head screwed to the upper female screw member, a lower female screw member to be screwed to a shaft portion of the support bolt, and a lower female screw member installed on the floor base. The upper female screw member is formed in a cylindrical shape large enough to allow the vibration isolator to enter, and the head of the support bolt and the upper female screw member The shaft of the support bolt and the screw of the lower female screw member are in opposite directions to each other, and the rotation of the support bolt advances and retreats the vibration isolator into the upper female screw member to adjust the height of the floor material. Floor structure. 2. The sound insulating member according to claim 1, wherein the vibration isolating member has a double structure in which an outer rubber material is coated on an outer periphery of a cylindrical inner rubber material, and the inner rubber material has a rubber hardness softer than that of the outer rubber material. Floor structure.