Anti-vibration support legs for floating floors

Abstract

To prevent a decrease in the load-bearing performance of a floating floor while reducing the floor impact sound level. [Solution] The vibration-damping support leg 1 for a floating floor has a first upper abutment surface 11 that is attached in a state of abutting the underside of the plate material, a first lower abutment surface 21 that abuts the upper surface of the floor base when the plate material is supported, and a second upper abutment surface 12 that abuts a portion of the underside of the plate material away from the portion where the first upper abutment surface 11 abuts when a first predetermined load acts on the plate material and the vibration-damping support leg 1 for a floating floor is elastically deformed.

Description

[Technical Field]

[0001] The present disclosure relates to vibration-isolating support legs for floating floors that support, for example, floating floors of houses. [Background technology]

[0002] For example, Patent Document 1 discloses a support leg that supports the underfloor material that constitutes a floating floor on the floor base. The support leg in Patent Document 1 is composed of a disk-shaped vibration-damping material placed on the floor base, a washer placed on the top surface of the vibration-damping material, and a support rod that extends upward from the washer. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-321964 Summary of the Invention [Problem to be solved by the invention]

[0004] In daily life, an impact may occur on the floor surface when a resident on an upper floor drops an object on the floor, and the sound that occurs when this happens is called floor impact noise. Floor impact noise is particularly problematic for the floor below, and it is generally thought that in order to reduce floor impact noise, it is sufficient to use a floating floor, such as that described in Patent Document 1, and soften the vibration-proof material that supports the floating floor.

[0005] However, simply making the vibration-isolating material supporting the flooring soft can make the floor feel soft and uncomfortable to walk on. Also, when heavy objects such as furniture or a piano are placed on the floor, soft vibration-isolating material can cause the floor to sink more.

[0006] The present disclosure has been made in consideration of these points, and its purpose is to reduce the floor impact sound level of a floating floor while not reducing the load-bearing performance. [Means for solving the problem]

[0007] To achieve the above object, one aspect of the present disclosure can be based on a vibration-isolating support leg for a floating floor made of an elastic body that supports a plate material that constitutes a floating floor from below. The vibration-isolating support leg for a floating floor has a first upper abutment surface that is attached in a state of abutting against the underside of the plate material, a first lower abutment surface that abuts against the upper surface of the floor base in a state in which the plate material is supported, and a second upper abutment surface that abuts against a portion of the underside of the plate material that is distant from the portion in abutment by the first upper abutment surface in a state in which a first predetermined load acts on the plate material and the vibration-isolating support leg for a floating floor is elastically deformed.

[0008] According to this configuration, when the load acting on the plate material is less than the first predetermined load, the plate material is supported on the floor base via the floating floor vibration-isolating support leg, with only the first upper abutment surface abutting the underside of the plate material. When a relatively small load is acting like this, the second upper abutment surface is not in contact with the plate material, so the floating floor vibration-isolating support leg is more likely to elastically deform in the vertical direction than when the second upper abutment surface is in contact with the plate material. As a result, floor impact sounds such as children jumping and walking, and objects falling are absorbed by the elastic deformation of the floating floor vibration-isolating support leg, reducing the floor impact sound level.

[0009] On the other hand, when a first predetermined load acts on the plate material due to the placement of a heavy object such as furniture, the elastic deformation of the vibration-isolating support leg for floating floors increases, and the second upper abutment surface abuts against the underside of the plate material. As a result, the load is supported not only by the first upper abutment surface but also by the second upper abutment surface, so the amount of sinking of the floor when a large load is applied is reduced, and a decrease in load-bearing capacity is suppressed.

[0010] An upper recess may be provided between the first upper contact surface and the second upper contact surface. According to this configuration, by providing the upper recess, the first upper contact surface and the second upper contact surface can be formed separately on the upper surface of the vibration-isolating support leg for a floating floor, and the amount of elastic deformation of the vibration-isolating support leg for a floating floor can be optimized.

[0011] The vibration-isolating support leg for a floating floor may be columnar. In this case, the first upper abutment surface may be provided in the radial center of the upper surface of the vibration-isolating support leg for a floating floor, the second upper abutment surface may be provided so as to extend circumferentially on the radially outer portion of the upper surface of the vibration-isolating support leg for a floating floor, and the first lower abutment surface may be provided so as to extend circumferentially on the radially outer portion of the lower surface of the vibration-isolating support leg for a floating floor. The outer diameter of the second upper abutment surface may be smaller than the outer diameter of the first lower abutment surface.

[0012] Furthermore, the outer diameter of the vibration-isolating support legs for the floating floor can be made smaller as it goes towards the upper side.

[0013] The floating floor vibration-isolating support leg may have a second lower abutment surface that abuts on a portion of the upper surface of the floor base away from the portion abutted by the first lower abutment surface when a load smaller than the first predetermined load acts on the plate material and the floating floor vibration-isolating support leg is elastically deformed. The second lower abutment surface can be provided radially inward of the lower surface of the floating floor vibration-isolating support leg. This positions the first upper abutment surface directly above the second lower abutment surface, so that when a large load acts on the plate material, the plate material can be firmly supported by the portions of the floating floor vibration-isolating support leg where the first upper abutment surface and the second lower abutment surface are formed.

[0014] When a second predetermined load greater than the first predetermined load acts on the plate material and the vibration-damping support leg for the floating floor is elastically deformed, the plate material may have a third lower abutment surface that abuts on a portion of the upper surface of the floor base away from the portion where the first lower abutment surface and the second lower abutment surface abut.

[0015] The third lower abutment surface can be provided on the lower surface of the floating floor vibration-isolating support leg between the first lower abutment surface and the second lower abutment surface. [Effects of the Invention]

[0016] As explained above, in addition to the first upper abutment surface that is attached in a state of abutting against the underside of the plate material, the vibration-damping support leg for the floating floor has a second upper abutment surface that abuts against the underside of the plate material in an elastically deformed state, so that the floor impact sound level can be reduced without reducing the load-bearing performance of the floating floor. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a diagram showing a floor structure equipped with vibration-isolating support legs for a floating floor according to an embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] FIG. 3 is a vertical cross-sectional view of a vibration-isolating support leg for a floating floor. [Figure 4] FIG. 4 is a plan view of the vibration-isolating support leg for a floating floor. [Figure 5] FIG. 5 is a bottom view of the vibration-isolating support leg for a floating floor. [Figure 6] FIG. 6 is a cross-sectional view showing the shape of the vibration-isolating supporting leg for a floating floor when the amount of displacement of the plate material is 0 mm. [Figure 7] FIG. 7 is a cross-sectional view showing the shape of a vibration-isolating support leg for a floating floor when the amount of displacement of the plate material is 2 mm. [Figure 8] FIG. 8 is a cross-sectional view showing the shape of a vibration-isolating support leg for a floating floor when the amount of displacement of the plate material is 4 mm. [Figure 9] FIG. 9 is a cross-sectional view showing the shape of a vibration-isolating support leg for a floating floor when the amount of displacement of the plate material is 5 mm. [Figure 10A] FIG. 10A is a plan view of another example of a vibration-isolating support leg for a floating floor. [Figure 10B] FIG. 10B is a side view showing a partial cross section of a vibration-isolating support leg for a floating floor according to another example. [Figure 10C] FIG. 10C is a bottom view of another example of a vibration-isolating support leg for a floating floor. [Figure 11A] FIG. 11A is a view equivalent to FIG. 10A showing an example of a mounting structure for a vibration-isolating support leg for a floating floor to a support plate. [Figure 11B]FIG. 11B is a view equivalent to FIG. 10B showing an example of a mounting structure for a vibration-isolating support leg for a floating floor to a support plate. [Figure 12] FIG. 12 is a bottom view showing an example in which six vibration-isolating support legs are attached to one support plate. [Figure 13] FIG. 13 is a bottom view showing an example in which four vibration-isolating support legs are attached to one support plate. [Figure 14] FIG. 14 is a cross-sectional view of a floor structure equipped with the vibration-isolating support legs with support plates shown in FIG. 12 or FIG. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the present invention, its applications, or its uses.

[0019] FIG. 1 is a diagram showing a floor structure 100 equipped with a vibration-isolating support leg 1 for a floating floor according to an embodiment of the present invention. The floor structure 100 includes a floating floor 102 composed of multiple plate members 101, multiple vibration-isolating support legs with support plates 200 to which the vibration-isolating support legs for a floating floor 1 are attached, and a floor base 103 (shown in FIG. 2). The floor base 103 is made of, for example, lightweight concrete panels, but the material is not particularly limited. The number of plate members 101 constituting the floating floor 102 may be one or multiple, and the number is not particularly limited. The floor structure 100 may include edge joists 104 to prevent the plate members 101 from sinking. In this case, the joists 104 are components installed on the wall side. The support plate 200 is separate from the main body of the plate member 101 but is a component included as part of the plate member 101. The support plate 200 may also be joined to the main body of the plate member 101 to form an integrated unit.

[0020] The board 101 can be made of any material with high rigidity that can be fixed to the edge joists 104 with screws or nails, for example. Examples of materials that can be used as the board 101 include particle board, plywood, MDF (wood board), and wood wool cement board. Wood such as particle board and plywood may be preferable as the board 101. The thickness of the board 101 can be 9 mm or more and 30 mm or less, or 12 mm or more and 25 mm or less, so long as it can ensure holding power when fixed to the edge joists 104 with screws or nails, for example.

[0021] There is no particular limitation on the size of the plate material 101, and one plate material 101 may be supported by several vibration-isolating support legs 1 for floating floors, and there is no size restriction. The shape of the plate material 101 is also not particularly limited, and may be various shapes such as rectangular or square.

[0022] As mentioned above, the board material 101 supported by the vibration-isolating support legs 1 for floating floors can be any wood-based material such as particle board or plywood that has sufficient rigidity when used as a floor panel and can be cut with a saw and fixed with screws or nails. In particular, particle board with a thickness of 20 mm to 25 mm is sometimes preferred as the board material 101 because it shows little deflection when a heavy object is placed on it. In this case, a 2 x 6 shaku size may be preferred for the dimensions of the board material 101 in terms of handling.

[0023] The vibration-isolating support leg 1 for a floating floor is an elastic member that supports the plate material 101 that constitutes the floating floor 102 from below. Materials with high vibration insulation properties can be used for the vibration-isolating support leg 1 for a floating floor. Examples of such materials include butyl rubber, natural rubber, recycled rubber, ethylene-propylene copolymer, ethylene-propylene multicomponent copolymer, acrylonitrile-butadiene rubber, polyisobutylene, urethane, and thermoplastic elastomer. One material selected from the group consisting of these can be used, or two or more materials selected from the group consisting of these can be mixed. Furthermore, at least one or two materials selected from the group consisting of these can be mixed with other components.

[0024] Examples of other components that can be mixed include tackifying resins, asphalt, powdered rubber, vulcanization accelerators, oils, anti-degradants, softeners, and fillers. A single component selected from the group consisting of these may be mixed, or two or more components selected from the group consisting of these may be mixed. In this way, the vibration-isolating support leg 1 for floating floors can also be constructed using a material that is a mixture of multiple components. In this embodiment, as will be described later, the structure of the vibration-isolating support leg 1 for floating floors can reduce floor impact sound levels while preventing a decrease in load-bearing capacity, thereby broadening the range of materials that can be used to construct the vibration-isolating support leg 1 for floating floors.

[0025] As shown in Figures 3 to 5, the vibration-isolating support leg 1 for a floating floor is generally columnar with an axis A extending vertically. The dimension (height dimension) of the vibration-isolating support leg 1 for a floating floor in the direction of axis A can be set, for example, in the range of 10 mm to 50 mm, or in the range of 20 mm to 40 mm. The maximum outer diameter of the vibration-isolating support leg 1 for a floating floor (the maximum outer diameter of the largest diameter part) can be set, for example, to 60 mm or less, or 50 mm or less. The minimum outer diameter of the vibration-isolating support leg 1 for a floating floor (the minimum outer diameter of the largest diameter part) can be set, for example, to 25 mm or more, or 30 mm or more. When comparing the height dimension and the outer diameter dimension (the outer diameter dimension of the largest diameter part) of the vibration-isolating support leg 1 for a floating floor, the outer diameter dimension is set longer. Although not shown, the height dimension and the outer diameter dimension of the vibration-isolating support leg 1 for a floating floor may be the same, or the outer diameter dimension may be set shorter.

[0026] As shown in Fig. 2, a first upper abutment surface 11 is provided in the radial center of the upper surface of the vibration-isolating support leg for floating floors 1 as a mounting surface that is attached in a state of abutting against the underside of the support plate 200. This first upper abutment surface 11 is circular and is composed of a flat surface that extends along the underside of the support plate 200. When attaching the first upper abutment surface 11 to the underside of the support plate 200, for example, adhesive, pressure-sensitive adhesive, double-sided tape, etc. can be used, or a hole can be made in the support plate 200 and the vibration-isolating support leg for floating floors 1 can be inserted into it. Multiple first upper abutment surfaces 11 may be provided.

[0027] A first lower abutment surface 21 is provided on the radially outer portion of the lower surface of the vibration-isolating support leg 1 for a floating floor, which abuts against the upper surface of the floor base 103 while supporting the plate material 101. The first lower abutment surface 21 extends in the circumferential direction of the axis A. In this embodiment, the first lower abutment surface 21 has a circular ring shape that is continuous in the circumferential direction, but it may also be discontinuous in the circumferential direction. The first lower abutment surface 21 is substantially parallel to the first upper abutment surface 11 and is configured as a flat surface that extends along the upper surface of the floor base 103. The first lower abutment surface 21 is an annular surface, and the inner diameter of the first lower abutment surface 21 is set to be larger than the outer diameter of the first upper abutment surface 11. Therefore, when the floating floor vibration-isolating support leg 1 is viewed from the top-bottom direction (direction of axis A), the first upper abutment surface 11 is located inside the first lower abutment surface 21, and there is no overlapping portion between the first lower abutment surface 21 and the first upper abutment surface 11. A plurality of first lower abutment surfaces 21 may be provided.

[0028] A second upper abutment surface 12 is provided on the radially outer portion of the upper surface of the vibration-isolating support leg for floating floors 1. The second upper abutment surface 12 abuts against a portion of the lower surface of the support plate 200 away from the portion abutted by the first upper abutment surface 11 when a first predetermined load acts on the plate material 101 and the vibration-isolating support leg for floating floors 1 is elastically deformed. The second upper abutment surface 12 extends in the circumferential direction of the axis A. In this embodiment, the second upper abutment surface 12 has a circumferentially continuous annular shape, but it may also be discontinuous in the circumferential direction. The second upper abutment surface 12 is substantially parallel to the first upper abutment surface 11 and is formed as a flat surface. The second upper abutment surface 12 is an annular surface, and the inner diameter of the second upper abutment surface 12 is set to be larger than the outer diameter of the first upper abutment surface 11 by a predetermined amount or more. The first upper abutment surface 11 is surrounded by the second upper abutment surface 12.

[0029] The second upper abutment surface 12 is positioned lower than the first upper abutment surface 11. The height difference B1 between the second upper abutment surface 12 and the first upper abutment surface 11 can be set, for example, in the range of 0.4 mm to 4 mm, or in the range of 1 mm to 3 mm. The first predetermined load is the load that acts when a heavy object such as furniture or a piano is placed on the board 101. When a load less than the first predetermined load acts on the board 101, the second upper abutment surface 12 is spaced downward from the lower surface of the board 101. However, when a load equal to or greater than the first predetermined load acts on the board 101, the second upper abutment surface 12 abuts against the lower surface of the support plate 200 due to elastic deformation of the floating floor vibration-isolating support leg 1. The height difference B1 between the second upper abutment surface 12 and the first upper abutment surface 11 is set in this manner.

[0030] An upper recess 13 is provided on the upper surface of the vibration-isolating support leg for floating floors 1, between the first upper abutment surface 11 and the second upper abutment surface 12. The upper recess 13 is composed of a continuous annular groove in the circumferential direction of the axis A, and is open only upward. The width W1 of the upper recess 13 is set to become narrower the further downward the upper recess 13 goes. The bottom surface 13a of the upper recess 13 is made up of a flat surface. The depth of the upper recess 13, when taken from the first upper abutment surface 11 as the reference, can be set in the range of 10% to 50% of the height dimension of the vibration-isolating support leg for floating floors 1, or can also be set in the range of 15% to 40%.

[0031] The outer diameter of the second upper abutment surface 12 is smaller than the outer diameter of the first lower abutment surface 21. In other words, the outer peripheral surface 1A of the vibration-isolating support leg for a floating floor 1 is configured as a surface extending circumferentially around the axis A. The diameter of the outer peripheral surface 1A (the outer diameter of the vibration-isolating support leg for a floating floor 1) is smallest at the upper end of the vibration-isolating support leg for a floating floor 1, and conversely, is largest at the lower end of the vibration-isolating support leg for a floating floor 1. The outer peripheral surface 1A is formed so that it gradually expands in diameter from the upper end to the lower end of the vibration-isolating support leg for a floating floor 1. In other words, the outer diameter of the vibration-isolating support leg for a floating floor becomes smaller toward the upper side and larger toward the lower side. Because the vibration-isolating support leg for a floating floor 1 has a trapezoidal shape when viewed from the side, the vibration-isolating support leg for a floating floor 1 is less likely to buckle and deform when a load is applied, and sinking can be reduced.

[0032] A second lower abutment surface 22 is formed on the radially inner side of the lower surface of the vibration-isolating support leg 1 for a floating floor. The second lower abutment surface 22 extends in the circumferential direction of the axis A. In this embodiment, the second lower abutment surface 22 has a continuous annular shape in the circumferential direction, but it may also be discontinuous in the circumferential direction. The second lower abutment surface 22 is substantially parallel to the first lower abutment surface 21 and is configured as a flat surface. The second lower abutment surface 22 has an annular surface, and a first lower recess 22a is formed at its center. The depth of the first lower recess 22a can be, for example, 1 mm or more, or 3 mm or more. The first lower recess 22a may be omitted. If the first lower recess 22a is omitted, the second lower abutment surface 22 becomes larger, thereby increasing the contact area with the floor base 103 under heavy load.

[0033] The outer diameter of the second lower abutment surface 22 is smaller than the outer diameter of the first upper abutment surface 11. Furthermore, the positions of the first upper abutment surface 11 and the second lower abutment surface 22 are set so that, when the floating floor vibration-isolating support leg 1 is viewed from the top and bottom, the first upper abutment surface 11 and the second lower abutment surface 22 overlap each other.

[0034] The second lower abutment surface 22 is a surface that abuts against a portion of the upper surface of the floor base 103 that is radially inward from the portion where the first lower abutment surface 21 abuts when a load smaller than the first predetermined load acts on the plate material 101 and the floating floor vibration-damping support leg 1 is elastically deformed. In other words, the second lower abutment surface 22 is positioned higher than the first lower abutment surface 21. The height difference B2 between the second lower abutment surface 22 and the first lower abutment surface 21 can be set, for example, in the range of 0.5 mm to 2 mm. A load smaller than the first predetermined load is a load that acts when an object lighter than the above-mentioned furniture or piano is placed on the plate material 101. When a load less than this load acts on the plate material 101, the second lower abutment surface 22 is spaced upward from the upper surface of the floor base 103, but when a load equal to or greater than this load acts on the plate material 101, the elastic deformation of the floating floor vibration-isolating support leg 1 causes the second lower abutment surface 22 to abut on the upper surface of the floor base 103. In this way, a height difference B2 between the second lower abutment surface 22 and the first lower abutment surface 21 is set.

[0035] A third lower abutment surface 23 is formed between the first lower abutment surface 21 and the second lower abutment surface 22 on the underside of the vibration-isolating support leg 1 for a floating floor. The third lower abutment surface 23 extends in the circumferential direction of the axis A. In this embodiment, the third lower abutment surface 23, like the first lower abutment surface 21, has a circular ring shape that is continuous in the circumferential direction, and the third lower abutment surface 23 and the first lower abutment surface 21 are arranged concentrically. The second lower abutment surface 22 is surrounded by the third lower abutment surface 23. The third lower abutment surface 23 may be discontinuous in the circumferential direction.

[0036] The third lower abutment surface 23 is substantially parallel to the first lower abutment surface 21 and is configured as a flat surface. The outer diameter of the third lower abutment surface 23 is larger than the outer diameter of the first upper abutment surface 11, but the inner diameter of the third lower abutment surface 23 is smaller than the outer diameter of the first upper abutment surface 11. Furthermore, when the floating floor vibration-isolating support leg 1 is viewed from the top and bottom, the positions of the first upper abutment surface 11 and the third lower abutment surface 23 are set so that the radially outer portion of the first upper abutment surface 11 and the radially inner portion of the third lower abutment surface 23 overlap each other.

[0037] The third lower abutment surface 23 is a surface that abuts against a portion of the upper surface of the floor base 103 that is radially separated from the portion where the first lower abutment surface 21 and the second lower abutment surface 22 abut when a second predetermined load greater than the first predetermined load acts on the plate material 101 and the floating floor vibration-damping support leg 1 is elastically deformed. In other words, the third lower abutment surface 23 is positioned higher than the second lower abutment surface 22. The height difference B3 between the third lower abutment surface 23 and the first lower abutment surface 21 can be set, for example, in the range of 1 mm to 5 mm. The second predetermined load is a load that acts when a heavy object heavier than the above-mentioned furniture or piano is placed on the plate material 101. When a load less than the second predetermined load is acting on the plate material 101, the third lower abutment surface 23 is spaced upward from the upper surface of the floor base 103, but when a load equal to or greater than the second predetermined load is acting on the plate material 101, the elastic deformation of the floating floor vibration-isolating support leg 1 causes the third lower abutment surface 23 to abut on the upper surface of the floor base 103. In this way, a height difference B3 between the third lower abutment surface 23 and the first lower abutment surface 21 is set. In addition, the width of the third lower abutment surface 23 is wider than the width of the first lower abutment surface 21.

[0038] A lower second recess 24 is provided between the first lower abutment surface 21 and the third lower abutment surface 23. The lower second recess 24 is configured as an annular groove that is continuous in the circumferential direction of the axis A and is open only downward. The width W2 of the lower second recess 24 is set to become narrower as it goes toward the upper side of the lower second recess 24. The widthwise center of the lower second recess 24 is positioned radially outward of the axis A with respect to the widthwise center of the upper recess 13. The depth of the lower second recess 24 can be, for example, 1 mm or more, or 3 mm or more. The lower second recess 24 may be provided as needed or may be omitted.

[0039] A lower third recess 25 is provided between the second lower abutment surface 22 and the third lower abutment surface 23. The lower third recess 25 is configured as a continuous annular groove in the circumferential direction of the axis A and is open only downward. The width W3 of the lower third recess 25 is set to narrow toward the upper side of the lower third recess 25. The outer diameter of the lower third recess 25 is smaller than the outer diameter of the first upper abutment surface 11. As a result, when the floating floor vibration-isolating support leg 1 is viewed from above and below, the first upper abutment surface 11 and the lower third recess 25 are positioned so as to overlap each other. The depth of the lower third recess 25 can be, for example, 1 mm or more, or 3 mm or more. The lower third recess 25 may be provided as needed or may be omitted.

[0040] FIG. 6 is a cross-sectional view showing the shape of the vibration-isolating support leg 1 for a floating floor when the downward displacement of the plate material 101 is 0 mm. "Downward displacement of the plate material 101 is 0 mm" refers to the state immediately after the plate material 101 is installed, and no load from a heavy object or the like is acting on it. FIG. 7 shows a case where the downward displacement of the plate material 101 is 2 mm based on FIG. 6, FIG. 8 shows a case where the downward displacement of the plate material 101 is 4 mm based on FIG. 6, and FIG. 9 shows a case where the downward displacement of the plate material 101 is 5 mm based on FIG. 6. In FIGS. 6 to 9, reference numeral 200 denotes the underside of the support plate 200, and reference numeral 103 denotes the upper surface of the floor base 103.

[0041] 6, when the displacement of the plate material 101 is 0 mm, almost no load is acting on the plate material 101, such as when a light object is placed on it. In this state, the first upper abutment surface 11 abuts against the lower surface of the support plate 200, and the second upper abutment surface 12 is spaced apart from the lower surface of the support plate 200. In addition, the first lower abutment surface 21 abuts against the upper surface of the floor base 103, and the second lower abutment surface 22 and the third lower abutment surface 23 are spaced apart from the upper surface of the floor base 103.

[0042] When the load acting on the plate material 101 is less than the first predetermined load, the plate material 101 is supported on the floor base 103 via the floating floor vibration-isolating support leg 1, with only the first upper abutment surface 11 abutting against the underside of the support plate 200. When a relatively small load is acting in this way, the second upper abutment surface 12 is not in contact with the support plate 200, so the floating floor vibration-isolating support leg 1 is more likely to elastically deform in the vertical direction than when the second upper abutment surface 12 is in contact with the support plate 200. For this reason, floor impact sounds such as children jumping and walking, objects falling, etc. are absorbed by the elastic deformation of the floating floor vibration-isolating support leg 1, reducing the floor impact sound level.

[0043] 7, when the load acting on the plate material 101 increases, the floating floor vibration-isolating support leg 1 elastically deforms, causing the second lower abutment surface 22 to abut on the upper surface of the floor base 103. The load at this time is less than the first predetermined load, so the second upper abutment surface 12 remains separated from the lower surface of the support plate 200, and the third lower abutment surface 23 remains separated from the upper surface of the floor base 103.

[0044] As shown in Figure 8, when the load acting on the plate material 101 increases and reaches a first predetermined load, the amount of elastic deformation of the vibration-isolating support leg for floating floors 1 increases, causing the second upper abutment surface 12 to abut against the underside of the support plate 200. In other words, when a first predetermined load acts on the plate material 101 due to the placement of a heavy object such as furniture, the amount of elastic deformation of the vibration-isolating support leg for floating floors 1 increases, causing the second upper abutment surface 12 to abut against the underside of the support plate 200. As a result, the load is supported not only by the first upper abutment surface 11 but also by the second upper abutment surface 12, so the amount of sinking of the floor when a large load is applied is reduced, and a decrease in load-bearing capacity is suppressed.

[0045] As shown in Figure 9, when the load acting on the plate material 101 becomes even larger and reaches a second predetermined load that is larger than the first predetermined load, the amount of elastic deformation of the floating floor vibration-isolating support leg 1 becomes even larger, causing the third lower abutment surface 23 to abut against the upper surface of the floor base 103. As a result, the load is also supported by the third lower abutment surface 23, resulting in high load-bearing performance.

[0046] (Construction procedure) Next, we will explain the construction procedure for a floating floor 102 using the vibration-isolating support legs 1 for floating floors. The construction procedure involves first attaching floor joists 104 to the wall to prevent sinking. A gap of approximately 5 mm to 20 mm is left between adjacent boards 101. A vibration-isolating support leg with support plate is temporarily attached to the underside of the board 101, and the board 101 is then supported from below by the vibration-isolating support leg with support plate.

[0047] The interval between adjacent vibration-isolating support legs with support plates can be, for example, about 455 mm in the long side direction of the plate material 101. The vibration-isolating support legs with support plates can be fixed to the support plate 200 from above the plate material 101 with screws, nails, etc.

[0048] 10A, 10B, and 10c, the present invention may also be applied to a structure other than the vibration-isolating support leg with support plate, in which the vibration-isolating support leg for floating floors 1 is integrated with the support plate 200. The support plate 200 has, for example, a rectangular shape that is larger than the projected surface of the vibration-isolating support leg for floating floors 1. When attaching the first upper abutment surface 11 of the vibration-isolating support leg for floating floors 1 to the underside of the support plate 200, for example, an adhesive, a pressure-sensitive adhesive, double-sided tape, etc. may be used.

[0049] The mounting structure of the vibration-isolating support leg for a floating floor 1 to the support plate 200 is not limited to the structure described above, and it is also possible to adopt structures such as those shown in Figures 11A and 11B. That is, in the example shown in Figures 11A and 11B, a through-hole 200A is formed in the center of the support plate 200, penetrating it in the thickness direction. Meanwhile, a protrusion 28 that protrudes upward is formed in the center of the top surface of the vibration-isolating support leg for a floating floor 1. The vibration-isolating support leg for a floating floor 1 is mounted to the support plate 200 with the protrusion 28 inserted into the through-hole 200A of the support plate 200.

[0050] Fig. 1 is a plan view showing a floor structure 100 equipped with vibration-isolating support legs with support plates, in which vibration-isolating support legs for floating floors 1 are attached to a support plate 200. As shown in this figure, multiple vibration-isolating support legs with support plates can be provided at intervals from each other.

[0051] Figure 2 is a cross-sectional view of a floor structure 100 equipped with vibration-isolating support legs with support plates. As shown in Figure 2, the support plate 200 can support the peripheral areas of multiple plate materials 101. Support by the support plate 200 is possible even if gaps are formed between the multiple plate materials 101. A floor finishing material 110 is laid on the upper surfaces of the plate materials 101.

[0052] Fig. 12 shows an example in which six vibration-isolating support legs 1 are attached to one support plate 200. Fig. 13 shows an example in which four vibration-isolating support legs 1 are attached to one support plate 200. As shown in Figs. 12 and 13, it is also possible to configure a support plate-equipped vibration-isolating support leg by attaching multiple vibration-isolating support legs 1 to one support plate 200. If the support plate 200 is rectangular, it is sufficient to attach vibration-isolating support legs 1 to at least four corners.

[0053] Fig. 14 is a cross-sectional view of a floor structure 100 equipped with the vibration-isolating support leg with support plate shown in Fig. 12 or the vibration-isolating support leg with support plate shown in Fig. 13. As shown in this figure, a gap may be formed between adjacent support plates 200.

[0054] The above-described embodiment is merely illustrative in all respects and should not be interpreted as limiting. Furthermore, all modifications and variations within the scope of the claims are within the scope of the present invention. For example, the horizontal cross section of the vibration-isolating support leg 1 for a floating floor can be an elliptical cross section. Furthermore, the vibration-isolating support leg 1 for a floating floor can also be a rectangular column. [Industrial Applicability]

[0055] As described above, the vibration-damping support legs for floating floors according to the present disclosure can be used to support the board materials that make up the floating floor from below, reducing the floor impact sound level while not reducing the load-bearing performance of the floating floor. [Explanation of symbols]

[0056] 1. Floating floor anti-vibration support legs 11 1st upper contact surface 12 Second upper contact surface 13 Upper recess 21 1st lower contact surface 22 Second lower contact surface 23 3rd lower contact surface 101 Board material 102 Floating Floor 103 Floor Base

Claims

1. A vibration-isolating support leg for a floating floor made of an elastic body that supports the plate material that constitutes the floating floor from below, a first upper abutment surface attached to the lower surface of the plate material in a state of abutting against the lower surface of the plate material; a first lower abutment surface that abuts against the upper surface of the floor base while supporting the plate material; A vibration-damping support leg for a floating floor, which has a second upper abutment surface that abuts a portion of the underside of the plate material away from the portion abutted by the first upper abutment surface when a first predetermined load acts on the plate material and the vibration-damping support leg for the floating floor is elastically deformed.

2. The vibration-isolating support leg for a floating floor according to claim 1, An anti-vibration support leg for a floating floor, wherein an upper recess is provided between the first upper abutment surface and the second upper abutment surface.

3. The vibration-isolating support leg for a floating floor according to claim 1, The vibration-isolating support leg for the floating floor is columnar, The first upper abutment surface is provided at the radial center of the upper surface of the vibration-isolating support leg for the floating floor, The second upper abutment surface is provided so as to extend in a circumferential direction at a radially outer portion of the upper surface of the vibration-isolating support leg for the floating floor, The first lower abutment surface is provided so as to extend in a circumferential direction at a radially outer portion of the lower surface of the vibration-isolating support leg for the floating floor, A vibration-isolating support leg for a floating floor, wherein the outer diameter of the second upper abutment surface is smaller than the outer diameter of the first lower abutment surface.

4. The vibration-isolating support leg for a floating floor according to claim 3, The outer diameter of the vibration-isolating support leg for a floating floor becomes smaller toward the upper side.

5. The vibration-isolating support leg for a floating floor according to claim 3, A vibration-isolating support leg for a floating floor, which has a second lower abutment surface that abuts a portion of the upper surface of the floor base away from the portion abutted by the first lower abutment surface when a load smaller than the first specified load acts on the plate material and the vibration-isolating support leg for the floating floor is elastically deformed.

6. The vibration-isolating support leg for a floating floor according to claim 5, The second lower abutment surface is provided radially inward of the lower surface of the vibration-isolating support leg for a floating floor.

7. The vibration-isolating support leg for a floating floor according to claim 6, A vibration-damping support leg for a floating floor, which has a third lower abutment surface that abuts on a portion of the upper surface of the floor base away from the portion where the first lower abutment surface and the second lower abutment surface abut when a second predetermined load greater than the first predetermined load acts on the plate material and the vibration-damping support leg for the floating floor is elastically deformed.

8. The vibration-isolating support leg for a floating floor according to claim 7, The third lower abutment surface is provided on the lower surface of the vibration-isolating support leg for a floating floor between the first lower abutment surface and the second lower abutment surface.

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