Dry double floor and wall-side floor support

Abstract

To provide a wall side floor support for avoiding occurrence of the gap of a partition wall, without lowering impact sound insulation performance.SOLUTION: A wall side floor support 31 which is a floor support for supporting a floor material 33 at the wall side of a party wall 20, out of floor supports supporting the floor material 33 of a dry double floor 30, is composed of: a gap preventing member 31c having a wall side fixing piece 311 positioned on the party wall 20 side, an inside fixing piece 312 positioned on a side opposite to the party wall 20 and a rubber sheet 313 held between the wall side fixing piece 311 and the inside fixing piece 312; and a supporting leg 31b installed on the slab face of a floor slab 10 and supporting the inside fixing piece 312 of the gap preventing member 31c. The gap preventing member 31c is fixed to the party wall 20 and the inside fixing piece 312 is fixed to the floor material 33. The supporting leg 31b supports the gap preventing member 31c at the inside fixing piece 312 side.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a dry double floor and a wall-side floor support for supporting a floor material of the dry double floor at a position along a wall.

Background Art

[0002] Conventionally, in collective housing and the like, a dry double floor structure is widely adopted, in which a plurality of floor supports provided with vibration-proof materials having cushioning properties are arranged on the slab surface of a floor slab, and a plurality of floor materials are laminated on these floor supports. In addition, on the end side of the floor material along the wall, the floor material is supported by a wood member called a perimeter sleeper, so that the floor material does not sink even when a heavy object is placed near the wall. In the case of the floor-first construction method, partition walls for partitioning the interior are installed after the dry double floor is constructed. (For example, refer to Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of Invention

Problems to be Solved by the Invention

[0004] By the way, dry double floors constructed by the floor-first construction method are widely used in collective housing. However, when a partition wall is installed on the dry double floor that is supported in a vibration-isolating manner, the partition wall may move differently from the fixed party wall at the joint portion with the party wall due to the influence of walking, changes in the indoor environment, and the like. As a result, cracks called "joint gaps" may occur in finishing materials such as wallpaper that are continuously pasted on the party wall and the partition wall. Therefore, as shown in Figure 3(a), one could consider fixing the studs 42 of the partition wall 40 to the fixed wall, the partition wall 20, so that the partition wall 40 does not move. However, if the entire surface of the studs 42 is fixed to the partition wall 20, the studs 42 become a vibration transmission path, which has the problem of reducing the impact sound insulation performance of the dry double floor 30A constructed on the slab surface of the floor slab 10. Furthermore, as shown in Figure 3(b), when the partition wall 40 is fixed to an additional wall 50 installed on the dry double floor 30A, the movement of the additional wall 50 and the movement of the partition wall 40 are almost the same because the additional wall 50 is not a fixed wall. Therefore, gaps will not occur in the finishing material due to the effects of walking, etc.

[0005] This invention has been made in view of the problems of the conventional method, and aims to provide a dry double floor configuration that can avoid the occurrence of gaps without reducing the impact sound insulation performance, and a wall-side floor support used in this dry double floor. [Means for solving the problem]

[0006] The present invention provides a dry double floor comprising a plurality of floor supports installed on a floor slab and flooring material installed on the floor supports, wherein the wall-side floor support, among the floor supports, which supports the dry double floor at the wall side of the partition wall, has a wall-side fixing piece located on the partition wall side, an inner fixing piece located on the opposite side from the partition wall, and a rubber sheet sandwiched between the wall-side fixing piece and the inner fixing piece, and a support member that supports the flooring material, and a support leg installed on the floor slab that supports the inner fixing piece of the support member, and the support member The aforementioned wall-side fixing piece It is fixed to the partition wall, and the inner fixing piece is the flooring material and the wall-side fixing piece It is characterized by being fixed in place. This makes it possible to prevent gaps in partition walls installed on a dry double floor without reducing impact sound insulation performance. Also, The wall-side floor support according to the present invention is It comprises support legs installed on the floor slab and support members installed on the support legs to support the floor material at the wall edge of the partition wall between units. 、 The support member but , The aforementionedA wall-side fixing piece located on the partition wall side, The aforementioned An inner fixing piece located on the opposite side of the partition wall, and a rubber sheet sandwiched between the wall-side fixing piece and the inner fixing piece. , equipped , The aforementioned Support member The wall-side fixing piece is the Fixed to the partition wall between units So , The aforementioned Inside fixed piece The above Flooring and the wall-side fixing piece Fixed So , The aforementioned supporting legs The above One side is fixed on the inside. The aforementioned Supporting the support member Structure and Therefore, it is possible to prevent gaps in partition walls installed on a dry double floor with a simple configuration. [Brief explanation of the drawing]

[0007] [Figure 1] This diagram shows a dry double floor and partition wall according to this embodiment. [Figure 2] This is a diagram showing a gap-preventing member according to the present invention. [Figure 3] This diagram shows a conventional dry double floor and partition wall. [Modes for carrying out the invention]

[0008] Figures 1(a) and 1(b) show the dry double-floor structure according to this embodiment. In the figures, 10 is the floor slab, 20 is the partition wall between units, 30 is the dry double-floor, and 40 is the partition wall. Figure (a) is a cross-sectional view of the partition wall 40 seen from a direction perpendicular to the wall surface, and Figure (b) is a cross-sectional view of the partition wall 20 seen from a direction perpendicular to the wall surface. For the sake of explanation, the length of the partition wall 40 in Figure (a) is shown to be shorter than it actually is. The floor slab 10 is a foundation wall made of reinforced concrete, and the partition wall 20 is erected on the floor slab 10 and is a wall that separates two adjacent rooms in an apartment building, or a room from a common corridor, etc. In this example, the partition wall 20 is a dry wall. The partition wall 20 is constructed by first installing floor-side runners 21 on the floor slab 10 and ceiling runners on the ceiling slab (not shown), then erecting a frame structure with multiple studs 22 between the floor-side runners 21 and ceiling-side runners, and finally attaching gypsum board 23, which is the wall base material, to the outside of the studs 22. A sheet-like finishing material, wallpaper 24, is attached to the surface of the gypsum board 23. In addition, insulation material 25, such as glass wool, is filled between the gypsum boards 23. The floor-side runner 21 and the ceiling-side runner are long members that extend in the direction of extension of the partition wall 20, and their cross-section has a U-shaped recess that is open on the interior side. The upper and lower ends of the studs 22 are inserted into and fixed to the recesses of the ceiling-side runner and the floor-side runner 21, respectively.

[0009] The dry double floor 30 comprises a plurality of floor supports 31 and 32 arranged on the slab surface of the floor slab 10, and flooring material 33 installed on the floor supports 31 and 32. Floor supports 31 are floor supports that support the flooring material 33 at the wall side of the partition wall 20, and floor supports 32 are floor supports that support the flooring material 33 on the inside of floor supports 31 (on the opposite side from the partition wall 20). Hereinafter, floor supports 31 will be referred to as wall-side floor supports, and floor supports 32 as inside floor supports. The wall-side floor support 31 comprises a disc-shaped or cylindrical base 31a installed on the slab surface of the floor slab 10, a support leg 31b whose lower part is attached to the base 31a and extends vertically, and a gap-preventing member 31c attached to the upper end of the support leg 31b and serving as a support member that supports the floor material 33 on its upper surface. The gap-preventing member 31c has the function of supporting the floor material 33 from below, similar to the base 32c of the inner floor support 32 described later. Furthermore, a nut portion 31n for screwing the upper part of the support leg 31b into is provided between the upper end of the support leg 31b and the gap-preventing member 31c, and a male threaded portion is formed on the outer circumference of the support leg 31b. By adjusting the length to which this male threaded portion is screwed into the nut portion 31n, the height of the gap-preventing member 31c from the floor slab 10 can be adjusted. Reference numeral 31d denotes a reinforcing rib member for reinforcing the end portion of the floor material 33, and the reinforcing rib member 31d is provided between the gap prevention member 31c and the floor material 33. The reinforcing rib member 31d is composed of particle board, structural plywood, or the like.

[0010] As also shown in Figure 2, the gap prevention member 31c is a rod-shaped member extending in a direction orthogonal to the extending direction of the partition wall 40 in a plane parallel to the slab surface of the floor slab 10, and includes a wall-side fixing piece 311 located on the demising wall 20 side, an inner fixing piece 312 located on the side opposite to the demising wall 20, and a rubber sheet 313 sandwiched between the wall-side fixing piece 311 and the inner fixing piece 312. That is, the surface of the rubber sheet 313 on the demising wall 20 side abuts against the wall-side fixing piece 311, and the surface on the side opposite to the demising wall 20 abuts against the inner fixing piece 312. As shown in Figure 1(a), the gap prevention member 31c is fixed to the demising wall 20 by the first fixing member 31p in a state where the end portion of the wall-side fixing piece 311 on the demising wall 20 side abuts against the demising wall 20, and is supported by the support leg 31b on the floor slab 10 side of the inner fixing piece 312. The first fixing member 31p fixes the wall-side fixing piece 311 of the gap prevention member 31c to the demising wall 20. The wall-side fixing piece 311 and the inner fixing piece 312 of the gap prevention member 31c are fixed by the second fixing member 31q. Further, the gap prevention member 31c is fixed to the base material 33a of the floor material 33 by the third fixing member 31r from the side of the inner fixing piece 312 opposite to the floor slab 10. As shown in Figure 1(b), the gap prevention member 31c is arranged on the slab surface of the floor slab 10 such that the left and right lengths in the thickness direction of the partition wall 40 are equal with respect to the center line m of the partition wall 40 indicated by the one-dot chain line in the same figure. The two support legs 31b are also arranged at a predetermined interval so as to be bilaterally symmetric with respect to the center line m of the partition wall 40. In this example, two rubber sheets 313 are arranged at intervals in the extension direction of the joint gap prevention member 31, each of which has a vertical length dimension and a length dimension in the extension direction of the joint gap prevention member 31 that are smaller than the vertical length dimensions of the wall-side fixing piece 311 and the inner fixing piece 312 and the length dimension in the extension direction of the joint gap prevention member 31. Further, it is preferable to provide a gap between the rubber sheet 313 and the reinforcing rib member 31d so as not to hinder the deformation of the rubber sheet 313. That is, the rubber sheet 313 is arranged such that the upper end portion of the rubber sheet 313 is located below the upper end portion of the joint gap prevention member 31. The rubber sheet 313 functions as a vibration damping material that reduces the vibration of the floor material 33 caused by walking or the like and the propagation of floor impact sound.

[0011] The inner floor support 32 includes a vibration-proof rubber 32a installed on the slab surface of the floor slab 10, a support leg 32b having a lower portion attached to the vibration-proof rubber 32a and extending in the vertical direction, a pedestal 32c attached to the upper end portion of the support leg 32b, and a nut portion 32n interposed between the upper end portion of the support leg 32b and the pedestal 32c, and supports the floor material 33 while preventing the vibration of the floor material 33 from being transmitted to the floor slab 10. The pedestal 32c is composed of particle board, structural plywood, or the like. Similar to the wall-side floor support 31, a male thread is formed on the outer peripheral side of the support leg 32b of the inner floor support 32, and by screwing the upper portion of this male thread into the nut portion 32n, the height of the pedestal 32c from the floor slab 10 can be adjusted.

[0012] The floor material 33 includes a base material 33a laid on the wall-side and inner floor supports 31, 32, a finishing material 33b laid on the upper portion of the base material 33a, and a reinforcing material 33c disposed between the base material 33a and the floor finishing material 33b. In order to reduce floor impact sound, gaps of about 2 mm are provided between the end portion of the finishing material 33b on the partition wall 20 side and the surface of the partition wall 20, and between the skirting board 26 of the partition wall 20 and the surface of the finishing material 33b, similarly to the conventional double floor structure. For the base material 33a, for example, particleboard or structural plywood is used, and for the finishing material 33b, flooring materials or tiles are used. In addition, for the reinforcing material 33c, glass fiber nonwoven gypsum board or plywood is used. The base material 33a is fixed to the base 32c and the inner member 312 of the wall-side floor support 31 by screw nails or bolts.

[0013] The partition wall 40 is a wall that divides the interior of a room by projecting from the partition wall 20 in a direction perpendicular to the partition wall 20, and is constructed on the double floor 30 after the double floor 30 is installed. The partition wall 40 is constructed by first installing the floor-side runner 41 on the double floor 30 and the ceiling-side runner on the interior side of the ceiling slab, then forming a frame by installing multiple studs 42 in the grooves of the floor-side runner 41 and the ceiling-side runner, and finally attaching gypsum board 43, which is the wall base material, to the outside of the studs 42. Similar to the partition wall 20, a sheet-like finishing material called wallpaper 44 is applied to the surface of the gypsum board 43. As shown in Figure 1(b), in order to reduce floor impact noise, gaps of approximately 2 mm are provided between the partition wall 40 and the end of the finishing material 33b, and between the baseboard 46 of the partition wall 40 and the surface of the finishing material 33b, as in conventional designs. Furthermore, the partition wall 40 is fixed to the door-to-door wall 20 by stud screws (not shown) at a point midway between the surface of the flooring material 33 and the stud 42. There may be three or more fixing points, but since too many fixing points can become vibration transmission paths, it is preferable to have two to three fixing points. Furthermore, the wallpaper 24 on the partition wall 20 and the wallpaper 44 on the partition wall 40 are applied continuously across both the partition wall 20 and the partition wall 40. After the wallpapers 24 and 44 are applied, the baseboards 26 on the partition wall 20 and the baseboards 46 on the partition wall 40 are attached to the partition wall 20 and the partition wall 40 so as to conceal the gaps between the partition wall 20 and the partition wall 40 and the flooring 33.

[0014] In this embodiment, among the floor supports that support the flooring material 33 of the dry double floor 30, the wall-side floor support 31 that supports the wall at the edge of the partition wall 20 is composed of a gap-preventing member 31c which has a wall-side fixing piece 311 located on the side of the partition wall 20 and an inner fixing piece 312 located on the opposite side of the partition wall 20, and a rubber sheet 313 which is provided between the wall-side fixing piece 311 and the inner fixing piece 312 and acts as a vibration-absorbing member connecting the wall-side fixing piece 311 and the inner fixing piece 312, and a support leg 31b which is installed on the slab surface of the floor slab 10 and supports the inner fixing piece 312 of the gap-preventing member 31c, and the gap-preventing member 31c is fixed to the partition wall 20, so that movement at the joint of the partition wall 40 with the partition wall 20 can be greatly reduced, and vibrations of the floor caused by walking, etc. can be absorbed by the rubber sheet 313 provided on the gap-preventing member 31c of the floor support 31. Therefore, gaps in the partition wall 40 installed on the dry double floor 30 can be prevented without reducing the floor impact sound insulation performance.

[0015] Although the present invention has been described above using embodiments, the technical scope of the present invention is not limited to the scope described in the embodiments. It will be apparent to those skilled in the art that various modifications or improvements can be made to the embodiments. It will be clear from the claims that such modified or improved forms may also be included in the technical scope of the present invention.

[0016] For example, in the above embodiment, two rubber sheets 313 are arranged at intervals in the direction of extension of the gap-preventing member 31, but there may be one rubber sheet 313 or three or more. If there is only one rubber sheet 313, it is desirable that its length be 2 to 3 times or more the width of the partition wall 40. [Explanation of symbols]

[0017] 10 Floor slab, 20 Partition wall between units, 21 Floor runner, 22 Stud, 23 Gypsum board, 24 Wallpaper, 25 Insulation, 30 Dry double floor, 31 Wall-side floor support, 31a Base, 31b Support leg, 31c Gap prevention member, 31d Reinforcing rib, 31n Nut section, 311 Wall-side fixing piece, 312 Inner fixing piece, 313 Rubber sheet, 31p First fixing member, 31q Second fixing member, 31r Third fixing member, 32 Inner floor support, 32a Vibration damping rubber, 32b Support leg, 32c Base, 32n Nut part, 33 Flooring material, 33a Substrate material, 33b Finishing material, 33c Reinforcement material, 40 Partition wall, 41 Floor runner, 42 studs, 43 plasterboard, 44 wallpaper.

Claims

1. A dry double floor comprising a plurality of floor supports installed on a floor slab and flooring material installed on the floor supports, Of the floor support members, the wall-side floor support member that supports the dry double floor at the wall of the partition wall between units is, A support member for supporting the flooring material comprises a wall-side fixing piece located on the partition wall side, an inner fixing piece located on the opposite side from the partition wall, and a rubber sheet sandwiched between the wall-side fixing piece and the inner fixing piece. A support leg installed on the floor slab and supporting the inner fixing piece of the support member, Equipped with, The wall-side fixing piece of the support member is fixed to the partition wall. A dry double floor characterized in that the inner fixing piece is fixed to the flooring material and the wall-side fixing piece.

2. A wall-side floor support comprising support legs installed on a floor slab and support members installed on the support legs to support the flooring material at the wall edge of the partition wall, The aforementioned support member, The wall-side fixing piece located on the partition wall side, An inner fixing piece located on the opposite side of the aforementioned partition wall, A rubber sheet is sandwiched between the wall-side fixing piece and the inner fixing piece, The wall-side fixing piece of the support member is fixed to the partition wall. The inner fixing piece is fixed to the flooring material and the wall-side fixing piece. The aforementioned support leg is characterized in that it supports the support member on the inner fixed side, thus providing a wall-side floor support.

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