JP2577746Y2 - Floor support - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to a floor support used for construction of a house or the like, and more particularly to a vibration isolation and cushioning technology for a floor support leg of a dry sound insulation double floor structure.

[Related Art] In recent years, multi-family dwellings including a plurality of dwellings in one building have been increasing, and the floor of each floor tends to be made of wood. In such a wooden floor structure, the floor impact sound on the floor is easily transmitted to the downstairs, and the sound causes troubles and complaints between houses. In order to solve this problem, various floor support structures and construction methods have been proposed and are being constructed.

As one of the floor construction methods against floor impact noise, a dry sound insulation double floor is used because of its high sound insulation performance.

In general, in a dry double floor structure, as shown in FIG. 1, a floor support (unit support leg) is provided at a predetermined pitch on a floor surface of a base floor 1 (first floor) such as a concrete slab that serves as a floor boundary. 10 is placed, and the second floor composed of the floor panels 6 and the like is supported by the floor support. The lower part is below the base floor 1 and the upper part is below the second floor. Upstairs.

In the conventional dry sound insulation double floor shown in FIG. 1, a rubber pedestal 2 is installed on a foundation floor 1 such as a concrete slab, and the lower end of a support bolt 3 is rotated in a non-through hole 2a of the rubber pedestal 2. A metal or nylon resin floor height adjusting nut 5 fitted into the upper and lower through-holes 4a of the receiving plate (floor panel support plate) 4 is attached to the upper screw portion 3a of the support bolt 3 freely. Screw
The receiving plate 4 supports the floor panel 6 constituting the second floor. By rotating the support bolt 3, the height of the receiving plate 4, that is, the height of the floor panel 6 placed thereon can be adjusted up and down.

[Problem to be Solved by the Invention] In the double floor having the above structure, the impact applied to the floor panel 6 is transmitted through the floor height adjusting nut 5 and the support bolt 3 firmly connected to the receiving plate 4. The vibration is transmitted to the rubber pedestal 2 having vibration damping and cushioning properties.

The floor impact energy generated at this time is transmitted to the rubber pedestal 2 almost without being absorbed because of the structure and its material up to the rubber pedestal 2, where the energy is absorbed and buffered for the first time. However, the ground contact area and volume of the rubber pedestal 2 could not sufficiently absorb the floor impact energy. Further, in the structure in which the floor impact is reduced at one place of the rubber pedestal 2, the resonance of the floor itself including the support legs is concentrated at one point by the rubber pedestal 2 at one place, and the floor is easily vibrated. There was a drawback that it would be transmitted downstairs.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a floor support having excellent vibration isolation and sound insulation properties that absorbs the impact energy in a double floor and reduces floor impact. Is to provide the body.

[Means for Solving the Problems] To achieve the above object, according to the present invention, a floor support for supporting a second floor on a first floor,
A non-through hole is formed in the upper surface of the substantially central portion, a rubber pedestal mounted on the first floor surface, and a flange portion are integrally formed on the outer periphery at a predetermined distance upward from the lower end, and a screw is formed on the upper portion. And a floor-height adjusting nut having a support portion integrally formed by extending laterally in a cylindrical female screw portion main body, and a vertical through-hole. And a female thread portion main body of the floor height adjusting nut is fitted into the upper and lower through holes of the receiving plate with a rubber buffer layer interposed between at least the supporting portion and the receiving plate. The length of the base portion below the flange portion of the support bolt is formed shorter than the depth of the non-through hole of the rubber pedestal, and the base portion of the support bolt is inserted into the non-through hole of the rubber pedestal and the lower end surface of the base and the non-through hole. Rotatably insert so that a sealed gap remains between the bottom and the bottom The support bolt is placed and erected on the rubber pedestal using the flange portion as a support portion, and the female screw portion of the nut for adjusting the floor height fitted to the upper and lower through holes of the receiving plate is screwed into the screw portion above the support bolt. A floor support is provided, wherein the body is screwed.

In a preferred aspect, a rubber buffer layer is interposed between the upper and lower through holes of the receiving plate and the lower peripheral lower surface thereof and the outer peripheral surface of the female screw portion main body and the upper surface of the support portion of the floor height adjusting nut.

[Action of the invention]

The floor support of the present invention uses a rubber pedestal having vibration isolation and cushioning properties as a pedestal mounted on the first floor, and a second pedestal.
The rubber cushioning layer is interposed between the receiving plate that supports the floor and the support that transmits at least the impact of the floor height adjustment nut, so that it has two elastic parts, It is intended for absorption. In other words, the conventional floor support having the shock absorbing portion as one rubber pedestal in contact with the first floor, and another position between the receiving plate supporting the second floor and the floor height adjusting nut. By interposing a rubber buffer layer between the first and second floors, the first floor and the second floor are mechanically insulated by the floor support, so that the internal loss of these components against vibration can be increased. Therefore, the floor impact sound can be effectively reduced by using the floor support of the present invention.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 2 is a partial sectional view showing an example in which a double floor is constructed using the floor support according to the present invention, and FIG. 3 is a floor according to the present invention used in the construction example shown in FIG. FIG. 4 shows a perspective view before assembling the support.

The floor support (unit support legs) 1 includes a rubber pedestal 2 having an anti-vibration and cushioning property having a non-through hole 2a formed in a substantially central upper surface, a rod-like support bolt 3, a floor height adjusting nut 5, And a receiving plate (floor panel supporting plate) 4. Support bolt 3
Has a flange portion 3b integrally formed on the outer periphery at a position separated by a predetermined distance upward from the lower end thereof, and further has a screw portion 3a on an upper portion and a groove portion 3d on an upper end surface (in the illustrated example, a minus groove, (A plus groove or a polygonal concave portion may be formed). The floor height adjusting nut 5 is a cylindrical female screw portion main body 5a.
And a support portion 5b extending laterally from the lower end of the female screw portion main body 5a. On the outer peripheral surface of the female screw portion main body 5a and the upper surface of the support portion 5b, a vibration-proof and cushioning rubber buffer layer 7 is provided. It is attached (it may be only the upper surface of the support portion). The receiving plate 4 has an upper and lower through hole 4a at a substantially central portion, and the female screw portion main body 5a of the floor height adjusting nut 5 is fitted into the upper and lower through hole 4a via a rubber buffer layer 7 and attached. On the other hand, since the length of the base 3c below the flange portion 3b is formed shorter than the depth of the non-through hole 2a of the rubber pedestal 2, the base 3c of the support bolt 3 is 2 is rotatably inserted into the non-through hole 2a so that the closed space A remains at the bottom of the non-through hole, and the support bolt 3 is attached to the flange portion 3b.
Can be placed and erected on the rubber pedestal 2 as a support portion. Thereafter, the female thread portion main body 5a of the nut 5 for adjusting the floor height fitted into the upper and lower through holes 4a of the receiving plate 4 is screwed into the screw portion 3a at the upper part of the support bolt, thereby providing the floor support of the present invention. 10 is assembled. Note that a washer having a surface wider than the flange portion may be interposed between the upper surface of the rubber pedestal and the flange portion of the support bolt.

At the time of construction of the double floor, on the floor of the foundation floor 1 such as a concrete slab as the first floor, the adhesive is applied at a predetermined pitch via an adhesive applied to the lower surface of the rubber pedestal 2 as necessary. A floor support of the present invention is installed, and the edge of the floor panel 6 constituting the second floor is placed on the upper surface of the receiving plate 4 of the floor support 10;
Support and build a double floor. In addition, an adhesive layer may be provided on the upper surface of the receiving plate 4 and used for fixing the floor panel. The height of the floor panel 6 is determined by fitting the tip of a rotating tool such as a screwdriver into a groove 3d formed on the upper end surface of the support bolt 3,
By rotating the support bolt 3, the floor height adjusting nut 5 screwed to the support bolt 3 and the receiving plate 4 fitted thereto via the rubber buffer layer 7 move up and down, and the height adjustment is performed. It can be carried out. In addition, the floor support consisting of the above structure supports the floor panel via a flat receiving plate, so it can be installed without cutting the floor panel or making holes, and also supports the floor panel stably it can.

The floor support according to the present invention shown in FIGS. 2 and 3 is provided with a floor height adjusting nut 5 from the receiving plate 4 when an impact is applied to the second floor, that is, the floor panel 6 in FIG.
When an impact is transmitted to the receiving plate 4 and the nut 5 for adjusting the floor height
The impact is alleviated by the rubber buffer layer 7 located between the two. The impact thus mitigated is applied to the floor height adjusting nut 5.
From the rubber pedestal to the rubber pedestal 2 via the support bolt 3, and the impact is further reduced in the rubber pedestal 2. In particular, since the closed gap A is formed between the non-through hole 2a of the rubber pedestal 2 and the lower end surface of the base 3c of the support bolt 3 inserted therein, the sealed gap A is formed of the air cushion. It plays a role and, together with the cushioning property of the rubber pedestal 2 itself, further enhances the impact relaxation effect. In this way, the shock transmitted to the first floor, that is, the foundation floor 1 such as a concrete slab, is significantly reduced by being buffered twice.

[Effect of the invention]

As described above, the floor support of the present invention is provided with two vibration-proof cushioning rubbers, that is, a rubber pedestal that holds the supporting bolts and the rubber buffer layer interposed between the receiving plate and the floor height adjusting nut. It effectively reduces floor impact. In addition, by appropriately selecting the hardness, material, and the like of the rubber buffer layer and the rubber pedestal, the resonance frequency can be dispersed, or the vibration in the vertical direction can be canceled out by creating a phase difference of the vibration in each rubber, or Can be absorbed and buffered. Therefore, by using the floor support of the present invention, the construction of the sound-insulating double floor can be easily performed, and the floor impact sound transmitted from the upper floor to the lower floor can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a partial sectional view showing a construction example of a dry double floor using a conventional floor support. FIG. 2 is a partial sectional view showing an example of construction of a dry double floor using the floor support of the present invention. FIG. 3 is a perspective view of the floor support of the present invention used in the construction example shown in FIG. 2 before assembling. 1: Foundation floor (concrete slab) 2: Rubber pedestal, 2a
... Non-through hole, 3 ... Support bolt, 3a ... Thread, 3b ... Flange, 3c ... Base, 3d ... Groove, 4 ... Receiving plate, 4a ... Vertical through hole, 5 ... Nut for floor height adjustment, 5A ... Female thread body, 5b…
Supporting part, 6: floor panel, 7: rubber buffer layer, A: closed space

Claims (2)

(57) [Scope of request for utility model registration] 1. A floor support for supporting a second floor on a first floor, wherein a non-through hole is formed in an upper surface of a substantially central portion, and the floor support is mounted on the first floor. A rubber pedestal, a rod-shaped support bolt having a flange integrally formed on an outer periphery thereof at a predetermined distance above the lower end, a threaded portion formed on an upper portion and a groove formed on an upper end surface, and a cylindrical female screw portion main body A floor height adjusting nut having a support portion integrally formed by extending in the lateral direction, and a receiving plate having upper and lower through holes, and supporting at least the female screw portion main body of the floor height adjusting nut. A rubber buffer layer is interposed between the base and the receiving plate to fit into the upper and lower through holes of the receiving plate, and the length of the base below the flange portion of the support bolt is set to be greater than the depth of the non-through hole of the rubber base. Also, the base of the support bolt is inserted into the non-through hole of the rubber pedestal under the base. The support bolt is mounted and erected on a rubber pedestal with the flange portion as a support portion, and is rotatably inserted so that a closed gap portion remains between the surface and the bottom portion of the non-through hole. A floor support, wherein a female thread portion main body of a nut for adjusting a floor height fitted into upper and lower through holes of the receiving plate is screwed to the screw portion. 2. A utility model in which a rubber buffer layer is interposed between the upper and lower through holes of the receiving plate and the lower peripheral lower surface thereof and the outer peripheral surface of the female screw portion main body and the upper surface of the support portion of the floor height adjusting nut. A floor support according to claim 1, wherein the floor support is registered.