JP2005307731A - Residential access floor system composed of highly rigid sandwich board for sound insulation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a residential access floor system which can, even if an interval between support legs is widened, eliminate a deflection of the access floor member due the span between the support legs, while the residential access floor system which improves sound absorbing/heat insulating performance and a deflection phenomenon by walking for achieving a comfortable living environment is also provided. <P>SOLUTION: The access floor system is composed of a plurality of support legs arranged at a regular interval, upper and lower plates laid over the support legs and a floor plate having a rectangular reinforcing frame arranged between the upper plate and the lower plate. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a dry soundproof access floor. More particularly, the present invention relates to a dry sound-insulated access floor having a high-rigidity sandwich board with reduced floor impact noise, which reduces the time and cost for installing the access floor.

  In Korea, support legs 10 'are arranged at regular intervals as shown in FIG. 1A in order to perform wiring in a room such as an office, a computer room, or an electronic information technology product factory, or to introduce a conduit system. A general access floor system in which a floor plate 20 ′ of an access floor is placed on a support leg 10 ′, has the same space as the height of the support leg, and the distance between the support legs 10 is determined. Basically adopted. Since such an access floor should be designed to withstand a relatively heavy load, a rigid material such as a steel support leg 10 'or an inorganic material floor plate 20' is used, which is relatively heavy. It is required to be a material. The distance between the support legs 10 ′ is about 500 × 500 mm or 600 × 600 mm. As described above, the construction of the access floor is not efficient, and the time required for construction of the access floor depends on the skill level of the installer.

  In Japan, access floors are built in apartment buildings, but the main purpose is to introduce a conduit system at the bottom and reduce the impact noise of lightweight floors. In the access floor constructed in Japan, the impact sound of the heavy-duty floor, which is a concern in Korea, is reduced only slightly, but depending on the construction ability in various buildings, the reduction performance may deteriorate. In addition, inelastic rubber is used to maximize floor impact noise reduction performance, but this feels shaking when walking on the access floor, so people who are used to ordinary hard cement mortar floors are anxious give.

  As shown in FIG. 1B, a conventional dry sound-insulated access floor in Japan has a plurality of support legs 10 ″ arranged at regular intervals on a concrete floor, and a plurality of floor boards 20 ″ are placed on the support legs 10 ″. Has been.

  As the distance between the support legs 10 "increases, that is, the number of the support legs 10" decreases, the number of times of floor leveling is shortened. As a result, the access floor is quickly constructed and the cost of the support legs 10 "is reduced. However, as the distance between the supporting legs 10 "increases, the floor is swayed and deflected during walking due to a decrease in strength. Therefore, the distance between the supporting legs 10" in the conventional access floor is 600 x 455 mm at the maximum. .

  Furthermore, since the conventional floor board 20 "is made of unmodified particle board, it is difficult to reduce the floor impact noise, and a large load is applied to the support leg 10" due to the high weight of the floor board 20 "itself.

  Therefore, in view of the above problems, the present invention provides a noise prevention system between floorboards that can remarkably reduce the impact sound of a light floor and the impact sound of a heavy floor and has excellent load bearing performance. SUMMARY OF THE INVENTION An object of the present invention is to provide an access floor system for a house that can eliminate the bending of the access floor member caused by the length of the distance between the support legs even if the distance between the support legs is widened. Is to provide.

  Another object of the present invention is to provide a residential access floor system capable of improving the sound absorption or heat insulation performance and the bending phenomenon during walking and realizing a comfortable living environment.

  According to an aspect of the present invention, the above object and other objects include a plurality of support legs arranged at regular intervals, an upper plate and a lower plate, and an upper plate and a lower plate placed on the support legs. Can be achieved by providing an access floor system including a floor plate having a square reinforcing frame disposed between the two.

  The upper plate, the lower plate and the reinforcing member are made of a single material or a composite material using at least two kinds of materials selected from wood, inorganic materials, synthetic resins, steel materials, and aluminum. In view of the ease of processing and wood, wood is preferable. In particular, the reinforcing member is preferably a multilayered wood.

  The total thickness of each floor plate including the upper plate, the lower plate, and the reinforcing member is preferably 20 to 70 mm. If the floor board is too thin, the desired strength cannot be obtained, and if it is too thick, the load and material cost of the floor board itself increase.

  According to a preferred embodiment of the present invention, a sound absorbing material or a heat insulating material can be inserted between the reinforcing members in order to achieve sound absorbing or heat insulating performance and high rigidity of the floorboard.

  As a sound absorbing material or a heat insulating material, a synthetic fiber selected from the group consisting of glass wool, rock wool, and polyethylene terephthalate, or a plastic foam selected from the group consisting of expanded polystyrene, urethane foam, and expanded polyvinyl chloride (PVC) Is mentioned.

  In the present invention, by using a high-rigidity sandwich floor board, the distance between the support legs is at least 400 × 400 mm, preferably 600 × 600 mm or more, more preferably 600 × 600 mm to 1,200 × 1,800 mm. . The access floor system according to the present invention is advantageous in reducing floor impact sound, and can achieve weight reduction of the floorboard.

  As described above, according to the present invention, it is possible to reduce the weight of the floor board by using the high-rigidity sandwich floor board, and the distance between the support legs is wider than that of the conventional access floor system. By doing so, the construction speed of the access floor can be increased and the cost can be reduced. Furthermore, the floor impact sound can be reduced, and the sound absorption and heat insulation performance can be improved by inserting the sound absorbing material and the heat insulating material between the reinforcing members arranged on the floor board.

  Hereinafter, a residential access floor system according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 2 is a diagram showing a residential access floor system according to the present invention, which includes a plurality of support legs 10 arranged at regular intervals and a plurality of floor boards 20 placed on the support legs 10. It has become.

  In the present invention, a high-rigidity sandwich floor board is used as the floor board 20, and the interval between the support legs is at least 400 × 400 mm or more, for example, 600 × 600 mm, 900 × 900 mm, 800 × 1,200 mm, 1,200 ×. It is adjusted to be 1,200 mm, 1,200 × 1,800 mm. Therefore, the construction time of the residential access floor is shortened, and the cost can be reduced by reducing the number of support legs 10.

  FIG. 3 shows a cross-sectional view and a partially exploded plan view of a floorboard 20 according to a preferred embodiment of the present invention. As shown in FIG. 3, the floor plate includes an upper plate 21 and a lower plate 22 and a reinforcing frame 23 disposed between the upper plate 21 and the lower plate 22. The reinforcing frame 23 has a square frame shape with the edges of the upper plate 21 and the lower plate 22 and includes one or more reinforcing members. At least one reinforcing member is disposed at one central portion for high rigidity. The reinforcing member is disposed at the center of the reinforcing frame, and ensures high rigidity of the reinforcing frame 23.

  FIG. 4 is a sectional view and a partially exploded plan view of a floor board 20 according to another preferred embodiment of the present invention. The floor plate 20 includes an upper plate 21, a lower plate 22, a reinforcing frame 23, and a core 24 disposed between reinforcing members. The core 24 is made of a sound absorbing / soundproofing material such as glass wool, expanded polystyrene (EPS), etc., and provides sound absorbing and soundproofing effects.

  The support leg 10 used in the present invention is roughly divided into a head, a height adjusting bolt, and a support rubber. More specifically, the support leg 10 is combined with the plate-like head in which a nut is inserted in a central portion thereof to support the floor plate, and the nut in which a single character or a cross groove is formed. And a support rubber having a bolt support groove formed on an upper portion thereof for rotatably supporting the bolt.

  In order to absorb the impact transmitted to the floor and reduce vibration transmission, it is preferable to use inelastic rubber as the support rubber. The shape of the supporting rubber can be selected from a cylindrical shape advantageous for load, a reverse trapezoidal shape that provides stability, and an embossed structure for obtaining floor impact noise reduction performance.

After manufacturing a floorboard having a structure as shown in FIG. 4 with a thickness of 40 mm, using particleboard as the upper plate 21 and lower plate 22, plywood as the reinforcing member 23, and expanded polystyrene as the core 24 The deflection of the floor board was measured.
As is apparent from the description in Table 1, the residential access floor according to the preferred embodiment of the present invention is superior to Comparative Example 1 and Comparative Example 2 that employ a conventional floor board, and according to the preferred embodiment of the present invention. The deflection of the floor board is about 4 mm less than that of Comparative Example 1 and Comparative Example 2. As shown in FIG. 5, the deflection is measured by applying a 100 kg load having a pressurized area of φ80 to the center of the upper surface of the floor board and reading the scale of the measurement gauge provided at the lower part of the floor board. went.

  Furthermore, by using the high-rigidity floor board 20, the space | interval between the support legs 10 can be expanded to 800 * 1,200mm, and a floor impact sound can also be reduced to the level which can be satisfied.

  6 and Table 2 are shown in FIG. 1A (Comparative Example 3) and FIG. 1B (Comparative Example 4) and the impact sound reduction performance of the floorboard according to the present invention (of a preferred embodiment) manufactured as described above. Compared with that of a conventional residential access floor using conventional support legs and floor boards. As shown in FIG. 6 and Table 2, the impact noise reduction performance of the residential access floor according to the present invention using a high-rigidity floor board is 6 dB than that of Comparative Example 3 and Comparative Example 4 using a conventional floor board. It is confirmed that (A) to 11 dB (A) is large. The floor impact sound reduction performance test was performed by KSF2810-2, and the results were compared and evaluated by KSF2863-2. More specifically, a floor board was constructed in the acoustic chamber, a heavy impact source was added to generate a floor impact sound, and then the generated sound was received through a microphone for analysis and evaluation.

  The preferred embodiments of the present invention have been given by way of example, and those skilled in the art will recognize various modifications, additions, and modifications without departing from the scope and spirit of the present invention described in the claims. It will be understood that replacements are possible.

  The present invention provides a noise prevention system between floorboards which is excellent not only in lightweight floor impact noise but also in high-weight floor impact noise reduction performance and having excellent load bearing performance.

It is a structural diagram of a conventional commercial residential access floor used in Korea. It is a structure figure of the access floor for commercial houses used in Japan. FIG. 3 is a structural diagram of an access floor according to the present invention. 1 is a cross-sectional view and a partially exploded plan view of a floor board according to a preferred embodiment of the present invention. FIG. 4 is a sectional view and a partially exploded plan view of a floor board according to another preferred embodiment of the present invention. It is the reference figure which showed the measuring method of the bending of a floor board. It is the graph which compared the heavy-weight floor impact sound reduction performance at the time of using the conventional upper panel for offices, the conventional upper panel for housing, and the highly rigid floor board which concerns on this invention for an access floor, respectively.

Explanation of symbols

10, 10 ', 10 "support leg 20, 20', 20" Floor plate 21 Upper plate 22 Lower plate 23 Reinforcement frame 24 Core

Claims (8)

  A plurality of support legs arranged at regular intervals, and a floor board having an upper plate and a lower plate and a square reinforcing frame arranged between the upper plate and the lower plate, which are placed on the support legs. Access floor system comprising.   The access floor system according to claim 1, wherein the reinforcing frame includes one or more reinforcing members arranged at a central portion thereof to increase rigidity.   The access floor system according to claim 1, wherein the upper plate, the lower plate, and the reinforcing member are made of a single material or a composite material selected from wood, an inorganic material, a synthetic resin, a steel material, and aluminum.   The access floor system according to claim 2 or 3, wherein the reinforcing frame further includes a sound absorbing material or a heat insulating material inserted between the reinforcing members.   The sound absorbing material or the heat insulating material is a synthetic fiber selected from the group consisting of glass wool, rock wool, and polyethylene terephthalate, or a plastic foam selected from the group consisting of expanded polystyrene, urethane foam, and expanded polyvinyl chloride (PVC). The access floor system according to claim 4.   The access floor system according to claim 1, wherein the floorboard has a thickness of 20 to 70 mm.   The access floor system according to claim 1, wherein a distance between the support legs is 600 × 600 mm to 1,200 × 1,800 mm.   The access floor system according to claim 2 or 3, wherein the reinforcing member is a wood having a multilayer structure.

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