JPH04179767A - Bearing leg of flooring panel board - Google Patents

Abstract

PURPOSE:To absorb impact sound to promote sound insulation efficiency by constituting a bearing leg of a flooring panel board of a panel board receiver, bearing bolt and cushion rubber so that it is capable of controlling the height, providing an upper projection to the upper surface of the panel board receiver, and providing a lower projection to the lower end of the bearing bolt. CONSTITUTION:A hole into which a cylinder section 2a projected upward of a panel board receiver 2 is fitted is formed in a particle board 51 of the lowest layer forming a panel board 1, and it is secured with a wood screw through a fixed hole 13. Then, a hexagonal hole 11 board in the surface of a bearing bolt 3 is controlled with a hexagon wrench to regulate the length of a bearing leg 10, and after the inclination of a floor or the jump of the particle board 51 is eliminated, the floor is formed. A universal coupling constituted of a spherical section 7a and a bowl-like section 7b is provided between a screw section 3a of the bearing bolt 3 and a holding section 3b, and the upper surface of the panel board receiver 2 is regulated so as to keep it horizontally. In addition, sound insulation efficiency is promoted by six upper projections 5 formed on the surface of the panel board receiver 2 radially, a lower projection 6 provided to the bottom of the holding section 3b and a projecting piece 9 provided to the bottom of a cushion rubber 4. According to the constitution, the sound insulation efficiency of the whole floor structural body can be promoted.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to support legs for panel boards, and more specifically, when installing flooring to replace the floors of condominiums, etc. with board materials, the above-mentioned panel boards for flooring are used as concrete floor structures. This relates to support legs for panel boards for supporting them against (floor slabs).

[Conventional technology]

The floor structure of condominiums, etc. is generally constructed by laying carpet on a concrete floor structure with cushioning materials such as cushions and insulation materials in between. There is no big difference between the concrete and the soles of the feet, and its hardness and coldness leave some unsatisfied with the livability, and there are other inconveniences such as the growth of dust mites due to the moisture from half-drying concrete.

Therefore, instead of such a floor structure, so-called flooring construction, in which wood flooring is replaced on top of the concrete floor structure, is increasingly being carried out. For example, as shown in FIG. 5, such flooring construction is carried out by placing the panel board 1 for flooring on the panel board receiver 2 on the upper part of the support legs 50 arranged in a predetermined number on the concrete floor structure 20. It forms a surface.

In this case, a support bolt 3 is screwed into the panel board receiver 2, and the length of the support leg 50 is adjusted by screwing the support bolt 3 back and forth in accordance with the ups and downs of the concrete floor structure 20. In addition, a cushion rubber 4 is provided at the lower end of the support bolt 3 to maintain the flatness of the panel board 1 for flooring.

[Problems solved by the invention]

By the way, it has been pointed out that the sound insulation properties of floor structures constructed with flooring are generally lower than those of rooms with tatami flooring, for example, and for residents living downstairs from rooms with flooring constructed in apartment complexes. There is a need for improved sound insulation when installing flooring, as it can sometimes generate unbearable noise.

Therefore, JIS considers the sound insulating properties of floor structures based on the experiences of residents of rooms with certain floor structures as shown in Table 1, as well as the residents living in the vicinity of those rooms.
Sound insulation grades up to 80 are set as standards.

The measurement method for specifying the above-mentioned sound insulation grade for a floor structure is as shown in FIG. The impact sound applied to the upper surface of the test object (floor material) T placed on a concrete plate 46 is collected by the microphone 42 placed on the lower surface side, and the level of the impact sound for each frequency is measured through a 1-octave filter 43. Measure and record with recorder 44.

The measurement results obtained are shown in Figure 4, where the horizontal axis is the center frequency of the impact sound octave band (unit: H2), and the vertical axis is the floor impact sound level (unit: dB). The sound insulation grade corresponding to the curve closest to the polygonal line is specified from among the curves corresponding to each sound insulation grade (L-40 to L-65) drawn as a reference in advance.

For example, in FIG. 4, it can be seen that the sound insulation grade of the floor structure is L-55 as a result of the measurement indicated by a polygonal line L1 connecting triangles.

The floor structure of the measurement result indicated by the polygonal line L1 is the fifth
As shown in the figure, the panel board 1 for flooring is placed on the support 850, in which particle board 51, plywood 52, polyolefin foam resin 53, and veneered plywood 54 are laminated in order from the bottom layer. According to Table 1, residents of rooms in which floor structures have been constructed need to ``live with caution,'' and the noise will be ``a little bothersome'' to neighboring residents, so it is necessary to improve the sound insulation. The current situation is that improvement is desired.

In order to improve the sound insulation grade of such floor structures, it is effective to change the laminated structure of the flooring panel boards to one with higher shock absorption, but in such cases, the floor surface As the unit price of panel boards, which are required in large numbers to cover the whole area, increases, the cost required for construction will increase significantly.

Furthermore, it is thought that the cushion rubber 4 may be made of a softer material to improve its shock absorption properties, but in such a case, as a result of supporting the load from the floor for a long period of time, the cushion rubber 4 may deteriorate. This results in the problem that the disease progresses rapidly and cannot be maintained for a given service life.

The present invention has been proposed in view of the above-mentioned conventional circumstances, and an object of the present invention is to provide a support leg for a panel board for flooring that can form a floor structure with high sound insulation properties.

(Left below) [Means for solving the problem] In order to achieve the above-mentioned purpose, as shown in Figs. The present invention adopts the following means as a prerequisite technology for a support leg of a panel board for flooring, which is configured to be height adjustable by threading bolts 3 and provided with a cushion rubber 4 at the lower end of the support bolt 3. .

That is, the support leg has an upper protrusion 5 on the upper surface of the panel board receiver 2.

Further, the cushion rubber 4 may be fixed to the support bolt 3 via a lower protrusion 6 provided at the lower end of the support bolt 3, and further provided with a plurality of convex pieces 9 on the lower surface of the cushion rubber 4. This configuration is also an effective means for achieving the above objective.

[For production]

In the above configuration, the air layer between the panel board 1 and the panel board receiver 2 caused by the presence of the upper protrusion 5 is
To improve sound insulation by absorbing impact sound from the top surface of a panel board 1.

Furthermore, since the lower end of the support bolt 3 comes into contact with the cushion rubber 4 via the lower protrusion 6, the contact area between the cushion rubber 4 and the support bolt 3 is reduced, so the apparent impact absorption of the upper cushion rubber 4 is reduced. Improved sound insulation.

Furthermore, a large number of convex pieces 9 are arranged in parallel on the lower surface of the cushion rubber 4.
The support leg 1 is in contact with the concrete structure 20 through
0 is prevented from being transmitted to the concrete structure 20.

〔Example〕

The present invention will be explained below based on one embodiment.

FIG. 1 is a perspective view of a floor support leg according to the present invention, and FIG. 2 is a side view and a vertical side view thereof.

As shown in Figure 1, panel board 1 for flooring
A support bolt 3 is screwed into a circular panel board support 2 that supports the support bolt 3 so that the height can be adjusted freely.
A cushion rubber 4 is provided at the lower end of the supporting leg 1o.

As described above, the panel board 1 is constructed by laminating particle board 51, plywood 52, polyolefin foam resin 53, and veneered plywood 54 in order from the bottom layer, of which the lowest layer particle board 51 is a panel board. A hole is formed into which a cylindrical portion 2a protruding above the receiver 2 is fitted, and is fixed with a wood screw 12 through a fixing hole 13. After that, the support leg 10 is screwed into the panel board receiver 2 so that it can move forward and backward.
Adjust the length of the floor to adjust the slope of each particle board 5.
After eliminating the difference in level between 1 and 2, the upper layer of plywood 52, polyolefin foam resin 53, and veneered plywood 54 are sequentially laminated to form a floor surface.

On the upper surface of the panel board receiver 2, six upper protrusions 5 with the cylindrical portion 2a as one end are formed on a radial line, so that when the panel board I-t- is placed, the panel board receiver 2
The structure is such that an air layer A is formed between the two.

The support bolt 3 also includes a threaded portion 3a that is screwed into the panel board receiver 2 and a holding portion 3 into which the cushion rubber 4 is fitted.
b, and a universal joint 7 is interposed between the threaded portion 3a and the holding portion 3b.

A lower protrusion 6 is provided on the surface of the holding portion 3b that is in contact with the upper surface of the cushion rubber 4, and is formed so as to reduce the contact area with the cushion rubber 4.

Furthermore, on the lower surface of the cushion rubber 4, that is, on the surface that contacts the concrete floor structure 20, there are 5 pieces in the vertical and lateral directions, a total of 2 pieces.
Five convex pieces 9 are provided to reduce the area of contact with the concrete floor structure 20.

The universal joint 7 has a spherical portion 7a on the threaded portion 3a side.
The bowl-shaped portion 7b is positioned on the side of the holding portion 3b, and a rotation restriction portion 8 is provided to restrict rotation of the spherical portion 7a and the bowl-shaped portion 7b. Such a universal joint 7 is caused by the support leg l due to the undulations that occur when the concrete floor structure 20 is placed.
This is provided so that the upper surface of the panel support 2 can be adjusted to be kept horizontal even when the panel support 2 cannot be installed vertically.

The sound insulation properties of the test object having the above-described layered structure flooring panel board 1 supported by the support legs 10 having such a structure were measured in the manner shown in FIG. 3, and in FIG.
A measurement result indicated by a polygonal line L2 connecting black circles was obtained. As can be seen from the same figure, the floor structure using the first embodiment product according to the present invention has the conventional floor support leg 5 shown by the above-mentioned polygonal line L1.
Despite adopting the same flooring panel board 1 as the floor structure using 0, the conventional sound insulation grade L-
It can be certified as sound insulation class L-50, which is one rank higher than 55.
It was proven that the sound insulation properties were improved.

Therefore, the experience of living in such a floor structure is similar to the first one mentioned above.
As shown in the table, residents in the neighborhood "are not bothered by the sound of footsteps or tails," and residents in the rooms where the construction was done only "live with some caution." It will be fine.

Note that the present invention is not limited to the above-mentioned embodiments. For example, the longitudinal cross-sectional shape of the convex piece 9 provided on the cushion rubber 4 may be made spherical on the side that contacts the concrete structure 20, or the shape of the convex piece 9 provided on the cushion rubber 4 may be spherical, or The arrangement of the upper protrusion 5, the lower protrusion 6, and the protrusion piece 9 can be modified, such as by making only the piece 9 thicker than the other protrusion pieces 9 so that it contacts the concrete structure 20 at these five points. Needless to say, it is possible to apply various modifications such as shape and number of pieces, and by combining it with flooring panel boards of different laminated structures, it is possible to create a floor structure with further improved sound insulation. Obtainable.

〔Effect of the invention〕

As described above, according to the present invention, the contact areas between the flooring panel board and the panel board receiver, the support bolts and the tuffion rubber, and the cushion rubber and the concrete floor structure are reduced, and the impact noise transmitted from the upper surface of the panel board is reduced. Since it can absorb sound, it has the effect of improving the overall sound insulation performance of the floor structure when flooring is constructed using the same panel board, and cost reduction is sacrificed in order to improve sound insulation performance. This will prevent this from happening.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a side view and longitudinal side view, Fig. 3 is an explanatory diagram of the measurement procedure for a floor structure, and Fig. 4 also shows a sound insulation grade curve. FIG. 5 is a side view of the conventional example. In the diagram, 1...Panel board, 2...Panel board holder, 3
...Support bolt, 4...Cushion rubber, 5...
- Upper convexity, 6... Lower convexity, 9... Convex piece.

Claims (1)

[Scope of Claims] [1] A support bolt (3) is screwed onto a panel board holder (2) that supports a panel board (1) for flooring so that the height thereof can be adjusted freely; (3) In the support leg of the panel board for flooring with cushion rubber (4) provided at the lower end, the panel board receiver (
2) A support leg for a panel board for flooring, characterized by having an upper protrusion (5) on the upper surface. [2] The cushion rubber (4) above is attached to the support bolt (3)
The supporting leg of a panel board for flooring according to claim 1, wherein the support leg is fixed via a lower protrusion (6) provided at the lower end of the support leg. [3] The supporting leg of a panel board for flooring according to claim 1 or 2, characterized in that a plurality of convex pieces (9) are provided on the lower surface of the cushion rubber (4).